diff options
Diffstat (limited to 'drivers')
255 files changed, 24509 insertions, 5409 deletions
diff --git a/drivers/Kconfig b/drivers/Kconfig index bddf431bbb7..9f5c0da57c9 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -70,4 +70,6 @@ source "drivers/sn/Kconfig" source "drivers/edac/Kconfig" +source "drivers/rtc/Kconfig" + endmenu diff --git a/drivers/Makefile b/drivers/Makefile index 5c69b86db62..424955274e6 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -56,6 +56,7 @@ obj-$(CONFIG_USB_GADGET) += usb/gadget/ obj-$(CONFIG_GAMEPORT) += input/gameport/ obj-$(CONFIG_INPUT) += input/ obj-$(CONFIG_I2O) += message/ +obj-$(CONFIG_RTC_LIB) += rtc/ obj-$(CONFIG_I2C) += i2c/ obj-$(CONFIG_W1) += w1/ obj-$(CONFIG_HWMON) += hwmon/ diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index ac5bbaedac1..13b5fd5854a 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -156,12 +156,10 @@ acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr) { if (efi_enabled) { addr->pointer_type = ACPI_PHYSICAL_POINTER; - if (efi.acpi20) - addr->pointer.physical = - (acpi_physical_address) virt_to_phys(efi.acpi20); - else if (efi.acpi) - addr->pointer.physical = - (acpi_physical_address) virt_to_phys(efi.acpi); + if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) + addr->pointer.physical = efi.acpi20; + else if (efi.acpi != EFI_INVALID_TABLE_ADDR) + addr->pointer.physical = efi.acpi; else { printk(KERN_ERR PREFIX "System description tables not found\n"); @@ -182,22 +180,14 @@ acpi_status acpi_os_map_memory(acpi_physical_address phys, acpi_size size, void __iomem ** virt) { - if (efi_enabled) { - if (EFI_MEMORY_WB & efi_mem_attributes(phys)) { - *virt = (void __iomem *)phys_to_virt(phys); - } else { - *virt = ioremap(phys, size); - } - } else { - if (phys > ULONG_MAX) { - printk(KERN_ERR PREFIX "Cannot map memory that high\n"); - return AE_BAD_PARAMETER; - } - /* - * ioremap checks to ensure this is in reserved space - */ - *virt = ioremap((unsigned long)phys, size); + if (phys > ULONG_MAX) { + printk(KERN_ERR PREFIX "Cannot map memory that high\n"); + return AE_BAD_PARAMETER; } + /* + * ioremap checks to ensure this is in reserved space + */ + *virt = ioremap((unsigned long)phys, size); if (!*virt) return AE_NO_MEMORY; @@ -409,18 +399,8 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) { u32 dummy; void __iomem *virt_addr; - int iomem = 0; - if (efi_enabled) { - if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) { - /* HACK ALERT! We can use readb/w/l on real memory too.. */ - virt_addr = (void __iomem *)phys_to_virt(phys_addr); - } else { - iomem = 1; - virt_addr = ioremap(phys_addr, width); - } - } else - virt_addr = (void __iomem *)phys_to_virt(phys_addr); + virt_addr = ioremap(phys_addr, width); if (!value) value = &dummy; @@ -438,10 +418,7 @@ acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) BUG(); } - if (efi_enabled) { - if (iomem) - iounmap(virt_addr); - } + iounmap(virt_addr); return AE_OK; } @@ -450,18 +427,8 @@ acpi_status acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) { void __iomem *virt_addr; - int iomem = 0; - if (efi_enabled) { - if (EFI_MEMORY_WB & efi_mem_attributes(phys_addr)) { - /* HACK ALERT! We can use writeb/w/l on real memory too */ - virt_addr = (void __iomem *)phys_to_virt(phys_addr); - } else { - iomem = 1; - virt_addr = ioremap(phys_addr, width); - } - } else - virt_addr = (void __iomem *)phys_to_virt(phys_addr); + virt_addr = ioremap(phys_addr, width); switch (width) { case 8: @@ -477,8 +444,7 @@ acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) BUG(); } - if (iomem) - iounmap(virt_addr); + iounmap(virt_addr); return AE_OK; } diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 99a3a28594d..713b763884a 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -246,7 +246,7 @@ static int acpi_processor_errata(struct acpi_processor *pr) } /* -------------------------------------------------------------------------- - Common ACPI processor fucntions + Common ACPI processor functions -------------------------------------------------------------------------- */ /* diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 31d4f3ffc26..7f37c7cc5ef 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -587,7 +587,8 @@ int __init acpi_table_init(void) return -ENODEV; } - rsdp = (struct acpi_table_rsdp *)__va(rsdp_phys); + rsdp = (struct acpi_table_rsdp *)__acpi_map_table(rsdp_phys, + sizeof(struct acpi_table_rsdp)); if (!rsdp) { printk(KERN_WARNING PREFIX "Unable to map RSDP\n"); return -ENODEV; diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c index 69f4c7ce9a6..cac09e353be 100644 --- a/drivers/atm/lanai.c +++ b/drivers/atm/lanai.c @@ -1972,7 +1972,7 @@ static int __devinit lanai_pci_start(struct lanai_dev *lanai) "(itf %d): No suitable DMA available.\n", lanai->number); return -EBUSY; } - if (pci_set_consistent_dma_mask(pci, 0xFFFFFFFF) != 0) { + if (pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) != 0) { printk(KERN_WARNING DEV_LABEL "(itf %d): No suitable DMA available.\n", lanai->number); return -EBUSY; diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 105a0d61eb1..dd547af4681 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -47,16 +47,16 @@ static struct kset_uevent_ops memory_uevent_ops = { .uevent = memory_uevent, }; -static struct notifier_block *memory_chain; +static BLOCKING_NOTIFIER_HEAD(memory_chain); int register_memory_notifier(struct notifier_block *nb) { - return notifier_chain_register(&memory_chain, nb); + return blocking_notifier_chain_register(&memory_chain, nb); } void unregister_memory_notifier(struct notifier_block *nb) { - notifier_chain_unregister(&memory_chain, nb); + blocking_notifier_chain_unregister(&memory_chain, nb); } /* @@ -140,7 +140,7 @@ static ssize_t show_mem_state(struct sys_device *dev, char *buf) static inline int memory_notify(unsigned long val, void *v) { - return notifier_call_chain(&memory_chain, val, v); + return blocking_notifier_call_chain(&memory_chain, val, v); } /* diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index 9bdea2a5cf0..45bcda54488 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -41,6 +41,7 @@ #include <linux/timer.h> #include <linux/pci.h> #include <linux/init.h> +#include <linux/jiffies.h> #include <linux/random.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -311,11 +312,10 @@ static boolean DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller) CommandsRemaining = CommandAllocationGroupSize; CommandGroupByteCount = CommandsRemaining * CommandAllocationLength; - AllocationPointer = kmalloc(CommandGroupByteCount, GFP_ATOMIC); + AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC); if (AllocationPointer == NULL) return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION"); - memset(AllocationPointer, 0, CommandGroupByteCount); } Command = (DAC960_Command_T *) AllocationPointer; AllocationPointer += CommandAllocationLength; @@ -2709,14 +2709,12 @@ DAC960_DetectController(struct pci_dev *PCI_Device, void __iomem *BaseAddress; int i; - Controller = (DAC960_Controller_T *) - kmalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC); + Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC); if (Controller == NULL) { DAC960_Error("Unable to allocate Controller structure for " "Controller at\n", NULL); return NULL; } - memset(Controller, 0, sizeof(DAC960_Controller_T)); Controller->ControllerNumber = DAC960_ControllerCount; DAC960_Controllers[DAC960_ControllerCount++] = Controller; Controller->Bus = PCI_Device->bus->number; @@ -3657,8 +3655,8 @@ static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command) (NewEnquiry->EventLogSequenceNumber != OldEnquiry->EventLogSequenceNumber) || Controller->MonitoringTimerCount == 0 || - (jiffies - Controller->SecondaryMonitoringTime - >= DAC960_SecondaryMonitoringInterval)) + time_after_eq(jiffies, Controller->SecondaryMonitoringTime + + DAC960_SecondaryMonitoringInterval)) { Controller->V1.NeedLogicalDriveInformation = true; Controller->V1.NewEventLogSequenceNumber = @@ -5643,8 +5641,8 @@ static void DAC960_MonitoringTimerFunction(unsigned long TimerData) unsigned int StatusChangeCounter = Controller->V2.HealthStatusBuffer->StatusChangeCounter; boolean ForceMonitoringCommand = false; - if (jiffies - Controller->SecondaryMonitoringTime - > DAC960_SecondaryMonitoringInterval) + if (time_after(jiffies, Controller->SecondaryMonitoringTime + + DAC960_SecondaryMonitoringInterval)) { int LogicalDriveNumber; for (LogicalDriveNumber = 0; @@ -5672,8 +5670,8 @@ static void DAC960_MonitoringTimerFunction(unsigned long TimerData) ControllerInfo->ConsistencyChecksActive + ControllerInfo->RebuildsActive + ControllerInfo->OnlineExpansionsActive == 0 || - jiffies - Controller->PrimaryMonitoringTime - < DAC960_MonitoringTimerInterval) && + time_before(jiffies, Controller->PrimaryMonitoringTime + + DAC960_MonitoringTimerInterval)) && !ForceMonitoringCommand) { Controller->MonitoringTimer.expires = @@ -5810,8 +5808,8 @@ static void DAC960_Message(DAC960_MessageLevel_T MessageLevel, Controller->ProgressBufferLength = Length; if (Controller->EphemeralProgressMessage) { - if (jiffies - Controller->LastProgressReportTime - >= DAC960_ProgressReportingInterval) + if (time_after_eq(jiffies, Controller->LastProgressReportTime + + DAC960_ProgressReportingInterval)) { printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel], Controller->ControllerNumber, Buffer); diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index e57ac5a4324..ae0949b3394 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -383,8 +383,9 @@ config BLK_DEV_RAM thus say N here. config BLK_DEV_RAM_COUNT - int "Default number of RAM disks" if BLK_DEV_RAM + int "Default number of RAM disks" default "16" + depends on BLK_DEV_RAM help The default value is 16 RAM disks. Change this if you know what are doing. If you boot from a filesystem that needs to be extracted @@ -400,13 +401,16 @@ config BLK_DEV_RAM_SIZE 8192. config BLK_DEV_INITRD - bool "Initial RAM disk (initrd) support" + bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support" help - The initial RAM disk is a RAM disk that is loaded by the boot loader - (loadlin or lilo) and that is mounted as root before the normal boot - procedure. It is typically used to load modules needed to mount the - "real" root file system, etc. See <file:Documentation/initrd.txt> - for details. + The initial RAM filesystem is a ramfs which is loaded by the + boot loader (loadlin or lilo) and that is mounted as root + before the normal boot procedure. It is typically used to + load modules needed to mount the "real" root file system, + etc. See <file:Documentation/initrd.txt> for details. + + If RAM disk support (BLK_DEV_RAM) is also included, this + also enables initial RAM disk (initrd) support. config CDROM_PKTCDVD diff --git a/drivers/block/acsi_slm.c b/drivers/block/acsi_slm.c index a5c1c8e871e..4cb9c133628 100644 --- a/drivers/block/acsi_slm.c +++ b/drivers/block/acsi_slm.c @@ -369,8 +369,6 @@ static ssize_t slm_read( struct file *file, char *buf, size_t count, int length; int end; - if (count < 0) - return( -EINVAL ); if (!(page = __get_free_page( GFP_KERNEL ))) return( -ENOMEM ); diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 32fea55fac4..393b86a3dbf 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -211,9 +211,7 @@ aoeblk_gdalloc(void *vp) return; } - d->bufpool = mempool_create(MIN_BUFS, - mempool_alloc_slab, mempool_free_slab, - buf_pool_cache); + d->bufpool = mempool_create_slab_pool(MIN_BUFS, buf_pool_cache); if (d->bufpool == NULL) { printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate bufpool " "for %ld.%ld\n", d->aoemajor, d->aoeminor); diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 71ec9e66438..1b0fd31c57c 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -996,13 +996,11 @@ static int cciss_ioctl(struct inode *inode, struct file *filep, status = -EINVAL; goto cleanup1; } - buff = (unsigned char **) kmalloc(MAXSGENTRIES * - sizeof(char *), GFP_KERNEL); + buff = kzalloc(MAXSGENTRIES * sizeof(char *), GFP_KERNEL); if (!buff) { status = -ENOMEM; goto cleanup1; } - memset(buff, 0, MAXSGENTRIES); buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int), GFP_KERNEL); if (!buff_size) { @@ -2729,9 +2727,9 @@ static void __devinit cciss_interrupt_mode(ctlr_info_t *c, struct pci_dev *pdev, return; } } +default_int_mode: #endif /* CONFIG_PCI_MSI */ /* if we get here we're going to use the default interrupt mode */ -default_int_mode: c->intr[SIMPLE_MODE_INT] = pdev->irq; return; } @@ -2940,13 +2938,12 @@ static void cciss_getgeometry(int cntl_num) int block_size; int total_size; - ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL); + ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); if (ld_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); return; } - memset(ld_buff, 0, sizeof(ReportLunData_struct)); size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); if (size_buff == NULL) { @@ -3060,10 +3057,9 @@ static int alloc_cciss_hba(void) for(i=0; i< MAX_CTLR; i++) { if (!hba[i]) { ctlr_info_t *p; - p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL); + p = kzalloc(sizeof(ctlr_info_t), GFP_KERNEL); if (!p) goto Enomem; - memset(p, 0, sizeof(ctlr_info_t)); for (n = 0; n < NWD; n++) p->gendisk[n] = disk[n]; hba[i] = p; diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c index 0e66e904bd8..597c007fe81 100644 --- a/drivers/block/cciss_scsi.c +++ b/drivers/block/cciss_scsi.c @@ -1027,12 +1027,11 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) int i; c = (ctlr_info_t *) hba[cntl_num]; - ld_buff = kmalloc(reportlunsize, GFP_KERNEL); + ld_buff = kzalloc(reportlunsize, GFP_KERNEL); if (ld_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); return; } - memset(ld_buff, 0, reportlunsize); inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); if (inq_buff == NULL) { printk(KERN_ERR "cciss: out of memory\n"); diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 840919bba76..bedb689b051 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -170,6 +170,7 @@ static int print_unex = 1; #include <linux/mm.h> #include <linux/bio.h> #include <linux/string.h> +#include <linux/jiffies.h> #include <linux/fcntl.h> #include <linux/delay.h> #include <linux/mc146818rtc.h> /* CMOS defines */ @@ -250,6 +251,18 @@ static int irqdma_allocated; #include <linux/cdrom.h> /* for the compatibility eject ioctl */ #include <linux/completion.h> +/* + * Interrupt freeing also means /proc VFS work - dont do it + * from interrupt context. We push this work into keventd: + */ +static void fd_free_irq_fn(void *data) +{ + fd_free_irq(); +} + +static DECLARE_WORK(fd_free_irq_work, fd_free_irq_fn, NULL); + + static struct request *current_req; static struct request_queue *floppy_queue; static void do_fd_request(request_queue_t * q); @@ -735,7 +748,7 @@ static int disk_change(int drive) { int fdc = FDC(drive); #ifdef FLOPPY_SANITY_CHECK - if (jiffies - UDRS->select_date < UDP->select_delay) + if (time_before(jiffies, UDRS->select_date + UDP->select_delay)) DPRINT("WARNING disk change called early\n"); if (!(FDCS->dor & (0x10 << UNIT(drive))) || (FDCS->dor & 3) != UNIT(drive) || fdc != FDC(drive)) { @@ -1063,7 +1076,7 @@ static int fd_wait_for_completion(unsigned long delay, timeout_fn function) return 1; } - if ((signed)(jiffies - delay) < 0) { + if (time_before(jiffies, delay)) { del_timer(&fd_timer); fd_timer.function = function; fd_timer.expires = delay; @@ -1523,7 +1536,7 @@ static void setup_rw_floppy(void) * again just before spinup completion. Beware that * after scandrives, we must again wait for selection. */ - if ((signed)(ready_date - jiffies) > DP->select_delay) { + if (time_after(ready_date, jiffies + DP->select_delay)) { ready_date -= DP->select_delay; function = (timeout_fn) floppy_start; } else @@ -3811,7 +3824,7 @@ static int check_floppy_change(struct gendisk *disk) if (UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY)) return 1; - if (UDP->checkfreq < (int)(jiffies - UDRS->last_checked)) { + if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) { if (floppy_grab_irq_and_dma()) { return 1; } @@ -4433,6 +4446,13 @@ static int floppy_grab_irq_and_dma(void) return 0; } spin_unlock_irqrestore(&floppy_usage_lock, flags); + + /* + * We might have scheduled a free_irq(), wait it to + * drain first: + */ + flush_scheduled_work(); + if (fd_request_irq()) { DPRINT("Unable to grab IRQ%d for the floppy driver\n", FLOPPY_IRQ); @@ -4522,7 +4542,7 @@ static void floppy_release_irq_and_dma(void) if (irqdma_allocated) { fd_disable_dma(); fd_free_dma(); - fd_free_irq(); + schedule_work(&fd_free_irq_work); irqdma_allocated = 0; } set_dor(0, ~0, 8); @@ -4633,6 +4653,8 @@ void cleanup_module(void) /* eject disk, if any */ fd_eject(0); + flush_scheduled_work(); /* fd_free_irq() might be pending */ + wait_for_completion(&device_release); } diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 74bf0255e98..9c3b94e8f03 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -839,7 +839,9 @@ static int loop_set_fd(struct loop_device *lo, struct file *lo_file, set_blocksize(bdev, lo_blocksize); - kernel_thread(loop_thread, lo, CLONE_KERNEL); + error = kernel_thread(loop_thread, lo, CLONE_KERNEL); + if (error < 0) + goto out_putf; wait_for_completion(&lo->lo_done); return 0; diff --git a/drivers/block/paride/bpck6.c b/drivers/block/paride/bpck6.c index 08d858ad64d..41a237c5957 100644 --- a/drivers/block/paride/bpck6.c +++ b/drivers/block/paride/bpck6.c @@ -224,10 +224,9 @@ static void bpck6_log_adapter( PIA *pi, char * scratch, int verbose ) static int bpck6_init_proto(PIA *pi) { - Interface *p = kmalloc(sizeof(Interface), GFP_KERNEL); + Interface *p = kzalloc(sizeof(Interface), GFP_KERNEL); if (p) { - memset(p, 0, sizeof(Interface)); pi->private = (unsigned long)p; return 0; } diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c index 62d2464c12f..2403721f9db 100644 --- a/drivers/block/paride/pd.c +++ b/drivers/block/paride/pd.c @@ -151,6 +151,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_GEO, D_SBY, D_DLY, D_SLV}; #include <linux/cdrom.h> /* for the eject ioctl */ #include <linux/blkdev.h> #include <linux/blkpg.h> +#include <linux/kernel.h> #include <asm/uaccess.h> #include <linux/sched.h> #include <linux/workqueue.h> @@ -275,7 +276,7 @@ static void pd_print_error(struct pd_unit *disk, char *msg, int status) int i; printk("%s: %s: status = 0x%x =", disk->name, msg, status); - for (i = 0; i < 18; i++) + for (i = 0; i < ARRAY_SIZE(pd_errs); i++) if (status & (1 << i)) printk(" %s", pd_errs[i]); printk("\n"); diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c index 6f5df0fad70..79b86825403 100644 --- a/drivers/block/paride/pg.c +++ b/drivers/block/paride/pg.c @@ -643,7 +643,8 @@ static ssize_t pg_read(struct file *filp, char __user *buf, size_t count, loff_t static int __init pg_init(void) { - int unit, err = 0; + int unit; + int err; if (disable){ err = -1; @@ -657,16 +658,17 @@ static int __init pg_init(void) goto out; } - if (register_chrdev(major, name, &pg_fops)) { + err = register_chrdev(major, name, &pg_fops); + if (err < 0) { printk("pg_init: unable to get major number %d\n", major); for (unit = 0; unit < PG_UNITS; unit++) { struct pg *dev = &devices[unit]; if (dev->present) pi_release(dev->pi); } - err = -1; goto out; } + major = err; /* In case the user specified `major=0' (dynamic) */ pg_class = class_create(THIS_MODULE, "pg"); if (IS_ERR(pg_class)) { err = PTR_ERR(pg_class); diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index 715ae5dc88f..d2013d36240 100644 --- a/drivers/block/paride/pt.c +++ b/drivers/block/paride/pt.c @@ -943,7 +943,8 @@ static ssize_t pt_write(struct file *filp, const char __user *buf, size_t count, static int __init pt_init(void) { - int unit, err = 0; + int unit; + int err; if (disable) { err = -1; @@ -955,14 +956,15 @@ static int __init pt_init(void) goto out; } - if (register_chrdev(major, name, &pt_fops)) { + err = register_chrdev(major, name, &pt_fops); + if (err < 0) { printk("pt_init: unable to get major number %d\n", major); for (unit = 0; unit < PT_UNITS; unit++) if (pt[unit].present) pi_release(pt[unit].pi); - err = -1; goto out; } + major = err; pt_class = class_create(THIS_MODULE, "pt"); if (IS_ERR(pt_class)) { err = PTR_ERR(pt_class); diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index 1d261f985f3..a04f60693c3 100644 --- a/drivers/block/pktcdvd.c +++ b/drivers/block/pktcdvd.c @@ -230,16 +230,6 @@ static int pkt_grow_pktlist(struct pktcdvd_device *pd, int nr_packets) return 1; } -static void *pkt_rb_alloc(gfp_t gfp_mask, void *data) -{ - return kmalloc(sizeof(struct pkt_rb_node), gfp_mask); -} - -static void pkt_rb_free(void *ptr, void *data) -{ - kfree(ptr); -} - static inline struct pkt_rb_node *pkt_rbtree_next(struct pkt_rb_node *node) { struct rb_node *n = rb_next(&node->rb_node); @@ -2073,16 +2063,6 @@ static int pkt_close(struct inode *inode, struct file *file) } -static void *psd_pool_alloc(gfp_t gfp_mask, void *data) -{ - return kmalloc(sizeof(struct packet_stacked_data), gfp_mask); -} - -static void psd_pool_free(void *ptr, void *data) -{ - kfree(ptr); -} - static int pkt_end_io_read_cloned(struct bio *bio, unsigned int bytes_done, int err) { struct packet_stacked_data *psd = bio->bi_private; @@ -2475,7 +2455,8 @@ static int pkt_setup_dev(struct pkt_ctrl_command *ctrl_cmd) if (!pd) return ret; - pd->rb_pool = mempool_create(PKT_RB_POOL_SIZE, pkt_rb_alloc, pkt_rb_free, NULL); + pd->rb_pool = mempool_create_kmalloc_pool(PKT_RB_POOL_SIZE, + sizeof(struct pkt_rb_node)); if (!pd->rb_pool) goto out_mem; @@ -2639,7 +2620,8 @@ static int __init pkt_init(void) { int ret; - psd_pool = mempool_create(PSD_POOL_SIZE, psd_pool_alloc, psd_pool_free, NULL); + psd_pool = mempool_create_kmalloc_pool(PSD_POOL_SIZE, + sizeof(struct packet_stacked_data)); if (!psd_pool) return -ENOMEM; diff --git a/drivers/block/umem.c b/drivers/block/umem.c index c16e66b9c7a..f7d4c65a7b8 100644 --- a/drivers/block/umem.c +++ b/drivers/block/umem.c @@ -50,6 +50,7 @@ #include <linux/timer.h> #include <linux/pci.h> #include <linux/slab.h> +#include <linux/dma-mapping.h> #include <linux/fcntl.h> /* O_ACCMODE */ #include <linux/hdreg.h> /* HDIO_GETGEO */ @@ -881,8 +882,8 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i printk(KERN_INFO "Micro Memory(tm) controller #%d found at %02x:%02x (PCI Mem Module (Battery Backup))\n", card->card_number, dev->bus->number, dev->devfn); - if (pci_set_dma_mask(dev, 0xffffffffffffffffLL) && - pci_set_dma_mask(dev, 0xffffffffLL)) { + if (pci_set_dma_mask(dev, DMA_64BIT_MASK) && + pci_set_dma_mask(dev, DMA_32BIT_MASK)) { printk(KERN_WARNING "MM%d: NO suitable DMA found\n",num_cards); return -ENOMEM; } diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 5980f3e886f..73d30bf0158 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -187,6 +187,7 @@ config MOXA_SMARTIO config ISI tristate "Multi-Tech multiport card support (EXPERIMENTAL)" depends on SERIAL_NONSTANDARD + select FW_LOADER help This is a driver for the Multi-Tech cards which provide several serial ports. The driver is experimental and can currently only be @@ -695,7 +696,7 @@ config NVRAM config RTC tristate "Enhanced Real Time Clock Support" - depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV + depends on !PPC && !PARISC && !IA64 && !M68K && (!SPARC || PCI) && !FRV && !ARM ---help--- If you say Y here and create a character special file /dev/rtc with major number 10 and minor number 135 using mknod ("man mknod"), you diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c index 70b8ed9cd17..4c67135c12d 100644 --- a/drivers/char/agp/nvidia-agp.c +++ b/drivers/char/agp/nvidia-agp.c @@ -11,6 +11,7 @@ #include <linux/gfp.h> #include <linux/page-flags.h> #include <linux/mm.h> +#include <linux/jiffies.h> #include "agp.h" /* NVIDIA registers */ @@ -256,7 +257,7 @@ static void nvidia_tlbflush(struct agp_memory *mem) do { pci_read_config_dword(nvidia_private.dev_1, NVIDIA_1_WBC, &wbc_reg); - if ((signed)(end - jiffies) <= 0) { + if (time_before_eq(end, jiffies)) { printk(KERN_ERR PFX "TLB flush took more than 3 seconds.\n"); } diff --git a/drivers/char/drm/drm_fops.c b/drivers/char/drm/drm_fops.c index 641f7633878..b7f7951c458 100644 --- a/drivers/char/drm/drm_fops.c +++ b/drivers/char/drm/drm_fops.c @@ -175,7 +175,7 @@ int drm_stub_open(struct inode *inode, struct file *filp) drm_device_t *dev = NULL; int minor = iminor(inode); int err = -ENODEV; - struct file_operations *old_fops; + const struct file_operations *old_fops; DRM_DEBUG("\n"); diff --git a/drivers/char/drm/i810_dma.c b/drivers/char/drm/i810_dma.c index ae0aa6d7e0b..c658dde3633 100644 --- a/drivers/char/drm/i810_dma.c +++ b/drivers/char/drm/i810_dma.c @@ -126,7 +126,7 @@ static int i810_map_buffer(drm_buf_t * buf, struct file *filp) drm_device_t *dev = priv->head->dev; drm_i810_buf_priv_t *buf_priv = buf->dev_private; drm_i810_private_t *dev_priv = dev->dev_private; - struct file_operations *old_fops; + const struct file_operations *old_fops; int retcode = 0; if (buf_priv->currently_mapped == I810_BUF_MAPPED) diff --git a/drivers/char/drm/i830_dma.c b/drivers/char/drm/i830_dma.c index 163f2cbfe60..b0f815d8cea 100644 --- a/drivers/char/drm/i830_dma.c +++ b/drivers/char/drm/i830_dma.c @@ -128,7 +128,7 @@ static int i830_map_buffer(drm_buf_t * buf, struct file *filp) drm_device_t *dev = priv->head->dev; drm_i830_buf_priv_t *buf_priv = buf->dev_private; drm_i830_private_t *dev_priv = dev->dev_private; - struct file_operations *old_fops; + const struct file_operations *old_fops; unsigned long virtual; int retcode = 0; diff --git a/drivers/char/epca.c b/drivers/char/epca.c index 765c5c108bf..9cad8501d62 100644 --- a/drivers/char/epca.c +++ b/drivers/char/epca.c @@ -486,8 +486,7 @@ static void pc_close(struct tty_struct * tty, struct file * filp) } /* End channel is open more than once */ /* Port open only once go ahead with shutdown & reset */ - if (ch->count < 0) - BUG(); + BUG_ON(ch->count < 0); /* --------------------------------------------------------------- Let the rest of the driver know the channel is being closed. diff --git a/drivers/char/ftape/lowlevel/fdc-io.c b/drivers/char/ftape/lowlevel/fdc-io.c index b2e0928e842..093fdf98b19 100644 --- a/drivers/char/ftape/lowlevel/fdc-io.c +++ b/drivers/char/ftape/lowlevel/fdc-io.c @@ -607,7 +607,7 @@ void fdc_reset(void) fdc_mode = fdc_idle; - /* maybe the cli()/sti() pair is not necessary, BUT: + /* maybe the spin_lock_irq* pair is not necessary, BUT: * the following line MUST be here. Otherwise fdc_interrupt_wait() * won't wait. Note that fdc_reset() is called from * ftape_dumb_stop() when the fdc is busy transferring data. In this diff --git a/drivers/char/ipmi/ipmi_devintf.c b/drivers/char/ipmi/ipmi_devintf.c index 7c0684deea0..932feedda26 100644 --- a/drivers/char/ipmi/ipmi_devintf.c +++ b/drivers/char/ipmi/ipmi_devintf.c @@ -90,7 +90,7 @@ static unsigned int ipmi_poll(struct file *file, poll_table *wait) spin_lock_irqsave(&priv->recv_msg_lock, flags); - if (! list_empty(&(priv->recv_msgs))) + if (!list_empty(&(priv->recv_msgs))) mask |= (POLLIN | POLLRDNORM); spin_unlock_irqrestore(&priv->recv_msg_lock, flags); @@ -789,21 +789,53 @@ MODULE_PARM_DESC(ipmi_major, "Sets the major number of the IPMI device. By" " interface. Other values will set the major device number" " to that value."); +/* Keep track of the devices that are registered. */ +struct ipmi_reg_list { + dev_t dev; + struct list_head link; +}; +static LIST_HEAD(reg_list); +static DEFINE_MUTEX(reg_list_mutex); + static struct class *ipmi_class; -static void ipmi_new_smi(int if_num) +static void ipmi_new_smi(int if_num, struct device *device) { dev_t dev = MKDEV(ipmi_major, if_num); + struct ipmi_reg_list *entry; devfs_mk_cdev(dev, S_IFCHR | S_IRUSR | S_IWUSR, "ipmidev/%d", if_num); - class_device_create(ipmi_class, NULL, dev, NULL, "ipmi%d", if_num); + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) { + printk(KERN_ERR "ipmi_devintf: Unable to create the" + " ipmi class device link\n"); + return; + } + entry->dev = dev; + + mutex_lock(®_list_mutex); + class_device_create(ipmi_class, NULL, dev, device, "ipmi%d", if_num); + list_add(&entry->link, ®_list); + mutex_unlock(®_list_mutex); } static void ipmi_smi_gone(int if_num) { - class_device_destroy(ipmi_class, MKDEV(ipmi_major, if_num)); + dev_t dev = MKDEV(ipmi_major, if_num); + struct ipmi_reg_list *entry; + + mutex_lock(®_list_mutex); + list_for_each_entry(entry, ®_list, link) { + if (entry->dev == dev) { + list_del(&entry->link); + kfree(entry); + break; + } + } + class_device_destroy(ipmi_class, dev); + mutex_unlock(®_list_mutex); devfs_remove("ipmidev/%d", if_num); } @@ -856,6 +888,14 @@ module_init(init_ipmi_devintf); static __exit void cleanup_ipmi(void) { + struct ipmi_reg_list *entry, *entry2; + mutex_lock(®_list_mutex); + list_for_each_entry_safe(entry, entry2, ®_list, link) { + list_del(&entry->link); + class_device_destroy(ipmi_class, entry->dev); + kfree(entry); + } + mutex_unlock(®_list_mutex); class_destroy(ipmi_class); ipmi_smi_watcher_unregister(&smi_watcher); devfs_remove(DEVICE_NAME); diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index abd4c5118a1..40eb005b9d7 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -48,7 +48,7 @@ #define PFX "IPMI message handler: " -#define IPMI_DRIVER_VERSION "38.0" +#define IPMI_DRIVER_VERSION "39.0" static struct ipmi_recv_msg *ipmi_alloc_recv_msg(void); static int ipmi_init_msghandler(void); @@ -162,6 +162,28 @@ struct ipmi_proc_entry }; #endif +struct bmc_device +{ + struct platform_device *dev; + struct ipmi_device_id id; + unsigned char guid[16]; + int guid_set; + + struct kref refcount; + + /* bmc device attributes */ + struct device_attribute device_id_attr; + struct device_attribute provides_dev_sdrs_attr; + struct device_attribute revision_attr; + struct device_attribute firmware_rev_attr; + struct device_attribute version_attr; + struct device_attribute add_dev_support_attr; + struct device_attribute manufacturer_id_attr; + struct device_attribute product_id_attr; + struct device_attribute guid_attr; + struct device_attribute aux_firmware_rev_attr; +}; + #define IPMI_IPMB_NUM_SEQ 64 #define IPMI_MAX_CHANNELS 16 struct ipmi_smi @@ -178,9 +200,8 @@ struct ipmi_smi /* Used for wake ups at startup. */ wait_queue_head_t waitq; - /* The IPMI version of the BMC on the other end. */ - unsigned char version_major; - unsigned char version_minor; + struct bmc_device *bmc; + char *my_dev_name; /* This is the lower-layer's sender routine. */ struct ipmi_smi_handlers *handlers; @@ -194,6 +215,9 @@ struct ipmi_smi struct ipmi_proc_entry *proc_entries; #endif + /* Driver-model device for the system interface. */ + struct device *si_dev; + /* A table of sequence numbers for this interface. We use the sequence numbers for IPMB messages that go out of the interface to match them up with their responses. A routine @@ -312,6 +336,7 @@ struct ipmi_smi /* Events that were received with the proper format. */ unsigned int events; }; +#define to_si_intf_from_dev(device) container_of(device, struct ipmi_smi, dev) /* Used to mark an interface entry that cannot be used but is not a * free entry, either, primarily used at creation and deletion time so @@ -320,6 +345,15 @@ struct ipmi_smi #define IPMI_INVALID_INTERFACE(i) (((i) == NULL) \ || (i == IPMI_INVALID_INTERFACE_ENTRY)) +/** + * The driver model view of the IPMI messaging driver. + */ +static struct device_driver ipmidriver = { + .name = "ipmi", + .bus = &platform_bus_type +}; +static DEFINE_MUTEX(ipmidriver_mutex); + #define MAX_IPMI_INTERFACES 4 static ipmi_smi_t ipmi_interfaces[MAX_IPMI_INTERFACES]; @@ -393,7 +427,7 @@ int ipmi_smi_watcher_register(struct ipmi_smi_watcher *watcher) if (IPMI_INVALID_INTERFACE(intf)) continue; spin_unlock_irqrestore(&interfaces_lock, flags); - watcher->new_smi(i); + watcher->new_smi(i, intf->si_dev); spin_lock_irqsave(&interfaces_lock, flags); } spin_unlock_irqrestore(&interfaces_lock, flags); @@ -409,14 +443,14 @@ int ipmi_smi_watcher_unregister(struct ipmi_smi_watcher *watcher) } static void -call_smi_watchers(int i) +call_smi_watchers(int i, struct device *dev) { struct ipmi_smi_watcher *w; down_read(&smi_watchers_sem); list_for_each_entry(w, &smi_watchers, link) { if (try_module_get(w->owner)) { - w->new_smi(i); + w->new_smi(i, dev); module_put(w->owner); } } @@ -844,8 +878,8 @@ void ipmi_get_version(ipmi_user_t user, unsigned char *major, unsigned char *minor) { - *major = user->intf->version_major; - *minor = user->intf->version_minor; + *major = ipmi_version_major(&user->intf->bmc->id); + *minor = ipmi_version_minor(&user->intf->bmc->id); } int ipmi_set_my_address(ipmi_user_t user, @@ -1553,7 +1587,8 @@ static int version_file_read_proc(char *page, char **start, off_t off, ipmi_smi_t intf = data; return sprintf(out, "%d.%d\n", - intf->version_major, intf->version_minor); + ipmi_version_major(&intf->bmc->id), + ipmi_version_minor(&intf->bmc->id)); } static int stat_file_read_proc(char *page, char **start, off_t off, @@ -1712,6 +1747,470 @@ static void remove_proc_entries(ipmi_smi_t smi) #endif /* CONFIG_PROC_FS */ } +static int __find_bmc_guid(struct device *dev, void *data) +{ + unsigned char *id = data; + struct bmc_device *bmc = dev_get_drvdata(dev); + return memcmp(bmc->guid, id, 16) == 0; +} + +static struct bmc_device *ipmi_find_bmc_guid(struct device_driver *drv, + unsigned char *guid) +{ + struct device *dev; + + dev = driver_find_device(drv, NULL, guid, __find_bmc_guid); + if (dev) + return dev_get_drvdata(dev); + else + return NULL; +} + +struct prod_dev_id { + unsigned int product_id; + unsigned char device_id; +}; + +static int __find_bmc_prod_dev_id(struct device *dev, void *data) +{ + struct prod_dev_id *id = data; + struct bmc_device *bmc = dev_get_drvdata(dev); + + return (bmc->id.product_id == id->product_id + && bmc->id.product_id == id->product_id + && bmc->id.device_id == id->device_id); +} + +static struct bmc_device *ipmi_find_bmc_prod_dev_id( + struct device_driver *drv, + unsigned char product_id, unsigned char device_id) +{ + struct prod_dev_id id = { + .product_id = product_id, + .device_id = device_id, + }; + struct device *dev; + + dev = driver_find_device(drv, NULL, &id, __find_bmc_prod_dev_id); + if (dev) + return dev_get_drvdata(dev); + else + return NULL; +} + +static ssize_t device_id_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 10, "%u\n", bmc->id.device_id); +} + +static ssize_t provides_dev_sdrs_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 10, "%u\n", + bmc->id.device_revision && 0x80 >> 7); +} + +static ssize_t revision_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 20, "%u\n", + bmc->id.device_revision && 0x0F); +} + +static ssize_t firmware_rev_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 20, "%u.%x\n", bmc->id.firmware_revision_1, + bmc->id.firmware_revision_2); +} + +static ssize_t ipmi_version_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 20, "%u.%u\n", + ipmi_version_major(&bmc->id), + ipmi_version_minor(&bmc->id)); +} + +static ssize_t add_dev_support_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 10, "0x%02x\n", + bmc->id.additional_device_support); +} + +static ssize_t manufacturer_id_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 20, "0x%6.6x\n", bmc->id.manufacturer_id); +} + +static ssize_t product_id_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 10, "0x%4.4x\n", bmc->id.product_id); +} + +static ssize_t aux_firmware_rev_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 21, "0x%02x 0x%02x 0x%02x 0x%02x\n", + bmc->id.aux_firmware_revision[3], + bmc->id.aux_firmware_revision[2], + bmc->id.aux_firmware_revision[1], + bmc->id.aux_firmware_revision[0]); +} + +static ssize_t guid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct bmc_device *bmc = dev_get_drvdata(dev); + + return snprintf(buf, 100, "%Lx%Lx\n", + (long long) bmc->guid[0], + (long long) bmc->guid[8]); +} + +static void +cleanup_bmc_device(struct kref *ref) +{ + struct bmc_device *bmc; + + bmc = container_of(ref, struct bmc_device, refcount); + + device_remove_file(&bmc->dev->dev, + &bmc->device_id_attr); + device_remove_file(&bmc->dev->dev, + &bmc->provides_dev_sdrs_attr); + device_remove_file(&bmc->dev->dev, + &bmc->revision_attr); + device_remove_file(&bmc->dev->dev, + &bmc->firmware_rev_attr); + device_remove_file(&bmc->dev->dev, + &bmc->version_attr); + device_remove_file(&bmc->dev->dev, + &bmc->add_dev_support_attr); + device_remove_file(&bmc->dev->dev, + &bmc->manufacturer_id_attr); + device_remove_file(&bmc->dev->dev, + &bmc->product_id_attr); + if (bmc->id.aux_firmware_revision_set) + device_remove_file(&bmc->dev->dev, + &bmc->aux_firmware_rev_attr); + if (bmc->guid_set) + device_remove_file(&bmc->dev->dev, + &bmc->guid_attr); + platform_device_unregister(bmc->dev); + kfree(bmc); +} + +static void ipmi_bmc_unregister(ipmi_smi_t intf) +{ + struct bmc_device *bmc = intf->bmc; + + sysfs_remove_link(&intf->si_dev->kobj, "bmc"); + if (intf->my_dev_name) { + sysfs_remove_link(&bmc->dev->dev.kobj, intf->my_dev_name); + kfree(intf->my_dev_name); + intf->my_dev_name = NULL; + } + + mutex_lock(&ipmidriver_mutex); + kref_put(&bmc->refcount, cleanup_bmc_device); + mutex_unlock(&ipmidriver_mutex); +} + +static int ipmi_bmc_register(ipmi_smi_t intf) +{ + int rv; + struct bmc_device *bmc = intf->bmc; + struct bmc_device *old_bmc; + int size; + char dummy[1]; + + mutex_lock(&ipmidriver_mutex); + + /* + * Try to find if there is an bmc_device struct + * representing the interfaced BMC already + */ + if (bmc->guid_set) + old_bmc = ipmi_find_bmc_guid(&ipmidriver, bmc->guid); + else + old_bmc = ipmi_find_bmc_prod_dev_id(&ipmidriver, + bmc->id.product_id, + bmc->id.device_id); + + /* + * If there is already an bmc_device, free the new one, + * otherwise register the new BMC device + */ + if (old_bmc) { + kfree(bmc); + intf->bmc = old_bmc; + bmc = old_bmc; + + kref_get(&bmc->refcount); + mutex_unlock(&ipmidriver_mutex); + + printk(KERN_INFO + "ipmi: interfacing existing BMC (man_id: 0x%6.6x," + " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", + bmc->id.manufacturer_id, + bmc->id.product_id, + bmc->id.device_id); + } else { + bmc->dev = platform_device_alloc("ipmi_bmc", + bmc->id.device_id); + if (! bmc->dev) { + printk(KERN_ERR + "ipmi_msghandler:" + " Unable to allocate platform device\n"); + return -ENOMEM; + } + bmc->dev->dev.driver = &ipmidriver; + dev_set_drvdata(&bmc->dev->dev, bmc); + kref_init(&bmc->refcount); + + rv = platform_device_register(bmc->dev); + mutex_unlock(&ipmidriver_mutex); + if (rv) { + printk(KERN_ERR + "ipmi_msghandler:" + " Unable to register bmc device: %d\n", + rv); + /* Don't go to out_err, you can only do that if + the device is registered already. */ + return rv; + } + + bmc->device_id_attr.attr.name = "device_id"; + bmc->device_id_attr.attr.owner = THIS_MODULE; + bmc->device_id_attr.attr.mode = S_IRUGO; + bmc->device_id_attr.show = device_id_show; + + bmc->provides_dev_sdrs_attr.attr.name = "provides_device_sdrs"; + bmc->provides_dev_sdrs_attr.attr.owner = THIS_MODULE; + bmc->provides_dev_sdrs_attr.attr.mode = S_IRUGO; + bmc->provides_dev_sdrs_attr.show = provides_dev_sdrs_show; + + + bmc->revision_attr.attr.name = "revision"; + bmc->revision_attr.attr.owner = THIS_MODULE; + bmc->revision_attr.attr.mode = S_IRUGO; + bmc->revision_attr.show = revision_show; + + bmc->firmware_rev_attr.attr.name = "firmware_revision"; + bmc->firmware_rev_attr.attr.owner = THIS_MODULE; + bmc->firmware_rev_attr.attr.mode = S_IRUGO; + bmc->firmware_rev_attr.show = firmware_rev_show; + + bmc->version_attr.attr.name = "ipmi_version"; + bmc->version_attr.attr.owner = THIS_MODULE; + bmc->version_attr.attr.mode = S_IRUGO; + bmc->version_attr.show = ipmi_version_show; + + bmc->add_dev_support_attr.attr.name + = "additional_device_support"; + bmc->add_dev_support_attr.attr.owner = THIS_MODULE; + bmc->add_dev_support_attr.attr.mode = S_IRUGO; + bmc->add_dev_support_attr.show = add_dev_support_show; + + bmc->manufacturer_id_attr.attr.name = "manufacturer_id"; + bmc->manufacturer_id_attr.attr.owner = THIS_MODULE; + bmc->manufacturer_id_attr.attr.mode = S_IRUGO; + bmc->manufacturer_id_attr.show = manufacturer_id_show; + + bmc->product_id_attr.attr.name = "product_id"; + bmc->product_id_attr.attr.owner = THIS_MODULE; + bmc->product_id_attr.attr.mode = S_IRUGO; + bmc->product_id_attr.show = product_id_show; + + bmc->guid_attr.attr.name = "guid"; + bmc->guid_attr.attr.owner = THIS_MODULE; + bmc->guid_attr.attr.mode = S_IRUGO; + bmc->guid_attr.show = guid_show; + + bmc->aux_firmware_rev_attr.attr.name = "aux_firmware_revision"; + bmc->aux_firmware_rev_attr.attr.owner = THIS_MODULE; + bmc->aux_firmware_rev_attr.attr.mode = S_IRUGO; + bmc->aux_firmware_rev_attr.show = aux_firmware_rev_show; + + device_create_file(&bmc->dev->dev, + &bmc->device_id_attr); + device_create_file(&bmc->dev->dev, + &bmc->provides_dev_sdrs_attr); + device_create_file(&bmc->dev->dev, + &bmc->revision_attr); + device_create_file(&bmc->dev->dev, + &bmc->firmware_rev_attr); + device_create_file(&bmc->dev->dev, + &bmc->version_attr); + device_create_file(&bmc->dev->dev, + &bmc->add_dev_support_attr); + device_create_file(&bmc->dev->dev, + &bmc->manufacturer_id_attr); + device_create_file(&bmc->dev->dev, + &bmc->product_id_attr); + if (bmc->id.aux_firmware_revision_set) + device_create_file(&bmc->dev->dev, + &bmc->aux_firmware_rev_attr); + if (bmc->guid_set) + device_create_file(&bmc->dev->dev, + &bmc->guid_attr); + + printk(KERN_INFO + "ipmi: Found new BMC (man_id: 0x%6.6x, " + " prod_id: 0x%4.4x, dev_id: 0x%2.2x)\n", + bmc->id.manufacturer_id, + bmc->id.product_id, + bmc->id.device_id); + } + + /* + * create symlink from system interface device to bmc device + * and back. + */ + rv = sysfs_create_link(&intf->si_dev->kobj, + &bmc->dev->dev.kobj, "bmc"); + if (rv) { + printk(KERN_ERR + "ipmi_msghandler: Unable to create bmc symlink: %d\n", + rv); + goto out_err; + } + + size = snprintf(dummy, 0, "ipmi%d", intf->intf_num); + intf->my_dev_name = kmalloc(size+1, GFP_KERNEL); + if (!intf->my_dev_name) { + rv = -ENOMEM; + printk(KERN_ERR + "ipmi_msghandler: allocate link from BMC: %d\n", + rv); + goto out_err; + } + snprintf(intf->my_dev_name, size+1, "ipmi%d", intf->intf_num); + + rv = sysfs_create_link(&bmc->dev->dev.kobj, &intf->si_dev->kobj, + intf->my_dev_name); + if (rv) { + kfree(intf->my_dev_name); + intf->my_dev_name = NULL; + printk(KERN_ERR + "ipmi_msghandler:" + " Unable to create symlink to bmc: %d\n", + rv); + goto out_err; + } + + return 0; + +out_err: + ipmi_bmc_unregister(intf); + return rv; +} + +static int +send_guid_cmd(ipmi_smi_t intf, int chan) +{ + struct kernel_ipmi_msg msg; + struct ipmi_system_interface_addr si; + + si.addr_type = IPMI_SYSTEM_INTERFACE_ADDR_TYPE; + si.channel = IPMI_BMC_CHANNEL; + si.lun = 0; + + msg.netfn = IPMI_NETFN_APP_REQUEST; + msg.cmd = IPMI_GET_DEVICE_GUID_CMD; + msg.data = NULL; + msg.data_len = 0; + return i_ipmi_request(NULL, + intf, + (struct ipmi_addr *) &si, + 0, + &msg, + intf, + NULL, + NULL, + 0, + intf->channels[0].address, + intf->channels[0].lun, + -1, 0); +} + +static void +guid_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) +{ + if ((msg->addr.addr_type != IPMI_SYSTEM_INTERFACE_ADDR_TYPE) + || (msg->msg.netfn != IPMI_NETFN_APP_RESPONSE) + || (msg->msg.cmd != IPMI_GET_DEVICE_GUID_CMD)) + /* Not for me */ + return; + + if (msg->msg.data[0] != 0) { + /* Error from getting the GUID, the BMC doesn't have one. */ + intf->bmc->guid_set = 0; + goto out; + } + + if (msg->msg.data_len < 17) { + intf->bmc->guid_set = 0; + printk(KERN_WARNING PFX + "guid_handler: The GUID response from the BMC was too" + " short, it was %d but should have been 17. Assuming" + " GUID is not available.\n", + msg->msg.data_len); + goto out; + } + + memcpy(intf->bmc->guid, msg->msg.data, 16); + intf->bmc->guid_set = 1; + out: + wake_up(&intf->waitq); +} + +static void +get_guid(ipmi_smi_t intf) +{ + int rv; + + intf->bmc->guid_set = 0x2; + intf->null_user_handler = guid_handler; + rv = send_guid_cmd(intf, 0); + if (rv) + /* Send failed, no GUID available. */ + intf->bmc->guid_set = 0; + wait_event(intf->waitq, intf->bmc->guid_set != 2); + intf->null_user_handler = NULL; +} + static int send_channel_info_cmd(ipmi_smi_t intf, int chan) { @@ -1804,8 +2303,8 @@ channel_handler(ipmi_smi_t intf, struct ipmi_recv_msg *msg) int ipmi_register_smi(struct ipmi_smi_handlers *handlers, void *send_info, - unsigned char version_major, - unsigned char version_minor, + struct ipmi_device_id *device_id, + struct device *si_dev, unsigned char slave_addr, ipmi_smi_t *new_intf) { @@ -1813,7 +2312,11 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, int rv; ipmi_smi_t intf; unsigned long flags; + int version_major; + int version_minor; + version_major = ipmi_version_major(device_id); + version_minor = ipmi_version_minor(device_id); /* Make sure the driver is actually initialized, this handles problems with initialization order. */ @@ -1831,10 +2334,15 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, if (!intf) return -ENOMEM; memset(intf, 0, sizeof(*intf)); + intf->bmc = kzalloc(sizeof(*intf->bmc), GFP_KERNEL); + if (!intf->bmc) { + kfree(intf); + return -ENOMEM; + } intf->intf_num = -1; kref_init(&intf->refcount); - intf->version_major = version_major; - intf->version_minor = version_minor; + intf->bmc->id = *device_id; + intf->si_dev = si_dev; for (j = 0; j < IPMI_MAX_CHANNELS; j++) { intf->channels[j].address = IPMI_BMC_SLAVE_ADDR; intf->channels[j].lun = 2; @@ -1884,6 +2392,8 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, caller before sending any messages with it. */ *new_intf = intf; + get_guid(intf); + if ((version_major > 1) || ((version_major == 1) && (version_minor >= 5))) { @@ -1898,6 +2408,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, /* Wait for the channel info to be read. */ wait_event(intf->waitq, intf->curr_channel >= IPMI_MAX_CHANNELS); + intf->null_user_handler = NULL; } else { /* Assume a single IPMB channel at zero. */ intf->channels[0].medium = IPMI_CHANNEL_MEDIUM_IPMB; @@ -1907,6 +2418,8 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, if (rv == 0) rv = add_proc_entries(intf, i); + rv = ipmi_bmc_register(intf); + out: if (rv) { if (intf->proc_dir) @@ -1921,7 +2434,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers, spin_lock_irqsave(&interfaces_lock, flags); ipmi_interfaces[i] = intf; spin_unlock_irqrestore(&interfaces_lock, flags); - call_smi_watchers(i); + call_smi_watchers(i, intf->si_dev); } return rv; @@ -1933,6 +2446,8 @@ int ipmi_unregister_smi(ipmi_smi_t intf) struct ipmi_smi_watcher *w; unsigned long flags; + ipmi_bmc_unregister(intf); + spin_lock_irqsave(&interfaces_lock, flags); for (i = 0; i < MAX_IPMI_INTERFACES; i++) { if (ipmi_interfaces[i] == intf) { @@ -3196,10 +3711,17 @@ static struct notifier_block panic_block = { static int ipmi_init_msghandler(void) { int i; + int rv; if (initialized) return 0; + rv = driver_register(&ipmidriver); + if (rv) { + printk(KERN_ERR PFX "Could not register IPMI driver\n"); + return rv; + } + printk(KERN_INFO "ipmi message handler version " IPMI_DRIVER_VERSION "\n"); @@ -3222,7 +3744,7 @@ static int ipmi_init_msghandler(void) ipmi_timer.expires = jiffies + IPMI_TIMEOUT_JIFFIES; add_timer(&ipmi_timer); - notifier_chain_register(&panic_notifier_list, &panic_block); + atomic_notifier_chain_register(&panic_notifier_list, &panic_block); initialized = 1; @@ -3242,7 +3764,7 @@ static __exit void cleanup_ipmi(void) if (!initialized) return; - notifier_chain_unregister(&panic_notifier_list, &panic_block); + atomic_notifier_chain_unregister(&panic_notifier_list, &panic_block); /* This can't be called if any interfaces exist, so no worry about shutting down the interfaces. */ @@ -3256,6 +3778,8 @@ static __exit void cleanup_ipmi(void) remove_proc_entry(proc_ipmi_root->name, &proc_root); #endif /* CONFIG_PROC_FS */ + driver_unregister(&ipmidriver); + initialized = 0; /* Check for buffer leaks. */ diff --git a/drivers/char/ipmi/ipmi_poweroff.c b/drivers/char/ipmi/ipmi_poweroff.c index e8ed26b77d4..786a2802ca3 100644 --- a/drivers/char/ipmi/ipmi_poweroff.c +++ b/drivers/char/ipmi/ipmi_poweroff.c @@ -464,7 +464,7 @@ static void ipmi_poweroff_function (void) /* Wait for an IPMI interface to be installed, the first one installed will be grabbed by this code and used to perform the powerdown. */ -static void ipmi_po_new_smi(int if_num) +static void ipmi_po_new_smi(int if_num, struct device *device) { struct ipmi_system_interface_addr smi_addr; struct kernel_ipmi_msg send_msg; diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index e59b638766e..35fbd4d8ed4 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -52,6 +52,7 @@ #include <linux/pci.h> #include <linux/ioport.h> #include <linux/notifier.h> +#include <linux/mutex.h> #include <linux/kthread.h> #include <asm/irq.h> #ifdef CONFIG_HIGH_RES_TIMERS @@ -109,21 +110,15 @@ enum si_intf_state { enum si_type { SI_KCS, SI_SMIC, SI_BT }; +static char *si_to_str[] = { "KCS", "SMIC", "BT" }; -struct ipmi_device_id { - unsigned char device_id; - unsigned char device_revision; - unsigned char firmware_revision_1; - unsigned char firmware_revision_2; - unsigned char ipmi_version; - unsigned char additional_device_support; - unsigned char manufacturer_id[3]; - unsigned char product_id[2]; - unsigned char aux_firmware_revision[4]; -} __attribute__((packed)); - -#define ipmi_version_major(v) ((v)->ipmi_version & 0xf) -#define ipmi_version_minor(v) ((v)->ipmi_version >> 4) +#define DEVICE_NAME "ipmi_si" + +static struct device_driver ipmi_driver = +{ + .name = DEVICE_NAME, + .bus = &platform_bus_type +}; struct smi_info { @@ -147,6 +142,9 @@ struct smi_info int (*irq_setup)(struct smi_info *info); void (*irq_cleanup)(struct smi_info *info); unsigned int io_size; + char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ + void (*addr_source_cleanup)(struct smi_info *info); + void *addr_source_data; /* Per-OEM handler, called from handle_flags(). Returns 1 when handle_flags() needs to be re-run @@ -203,8 +201,17 @@ struct smi_info interrupts. */ int interrupt_disabled; + /* From the get device id response... */ struct ipmi_device_id device_id; + /* Driver model stuff. */ + struct device *dev; + struct platform_device *pdev; + + /* True if we allocated the device, false if it came from + * someplace else (like PCI). */ + int dev_registered; + /* Slave address, could be reported from DMI. */ unsigned char slave_addr; @@ -224,12 +231,16 @@ struct smi_info unsigned long incoming_messages; struct task_struct *thread; + + struct list_head link; }; -static struct notifier_block *xaction_notifier_list; +static int try_smi_init(struct smi_info *smi); + +static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); static int register_xaction_notifier(struct notifier_block * nb) { - return notifier_chain_register(&xaction_notifier_list, nb); + return atomic_notifier_chain_register(&xaction_notifier_list, nb); } static void si_restart_short_timer(struct smi_info *smi_info); @@ -271,13 +282,13 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) spin_lock(&(smi_info->msg_lock)); /* Pick the high priority queue first. */ - if (! list_empty(&(smi_info->hp_xmit_msgs))) { + if (!list_empty(&(smi_info->hp_xmit_msgs))) { entry = smi_info->hp_xmit_msgs.next; - } else if (! list_empty(&(smi_info->xmit_msgs))) { + } else if (!list_empty(&(smi_info->xmit_msgs))) { entry = smi_info->xmit_msgs.next; } - if (! entry) { + if (!entry) { smi_info->curr_msg = NULL; rv = SI_SM_IDLE; } else { @@ -291,7 +302,8 @@ static enum si_sm_result start_next_msg(struct smi_info *smi_info) do_gettimeofday(&t); printk("**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); #endif - err = notifier_call_chain(&xaction_notifier_list, 0, smi_info); + err = atomic_notifier_call_chain(&xaction_notifier_list, + 0, smi_info); if (err & NOTIFY_STOP_MASK) { rv = SI_SM_CALL_WITHOUT_DELAY; goto out; @@ -344,7 +356,7 @@ static void start_clear_flags(struct smi_info *smi_info) memory, we will re-enable the interrupt. */ static inline void disable_si_irq(struct smi_info *smi_info) { - if ((smi_info->irq) && (! smi_info->interrupt_disabled)) { + if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { disable_irq_nosync(smi_info->irq); smi_info->interrupt_disabled = 1; } @@ -375,7 +387,7 @@ static void handle_flags(struct smi_info *smi_info) } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { /* Messages available. */ smi_info->curr_msg = ipmi_alloc_smi_msg(); - if (! smi_info->curr_msg) { + if (!smi_info->curr_msg) { disable_si_irq(smi_info); smi_info->si_state = SI_NORMAL; return; @@ -394,7 +406,7 @@ static void handle_flags(struct smi_info *smi_info) } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { /* Events available. */ smi_info->curr_msg = ipmi_alloc_smi_msg(); - if (! smi_info->curr_msg) { + if (!smi_info->curr_msg) { disable_si_irq(smi_info); smi_info->si_state = SI_NORMAL; return; @@ -430,7 +442,7 @@ static void handle_transaction_done(struct smi_info *smi_info) #endif switch (smi_info->si_state) { case SI_NORMAL: - if (! smi_info->curr_msg) + if (!smi_info->curr_msg) break; smi_info->curr_msg->rsp_size @@ -880,7 +892,7 @@ static void smi_timeout(unsigned long data) smi_info->last_timeout_jiffies = jiffies_now; - if ((smi_info->irq) && (! smi_info->interrupt_disabled)) { + if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { /* Running with interrupts, only do long timeouts. */ smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; spin_lock_irqsave(&smi_info->count_lock, flags); @@ -974,15 +986,10 @@ static struct ipmi_smi_handlers handlers = a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS */ #define SI_MAX_PARMS 4 -#define SI_MAX_DRIVERS ((SI_MAX_PARMS * 2) + 2) -static struct smi_info *smi_infos[SI_MAX_DRIVERS] = -{ NULL, NULL, NULL, NULL }; +static LIST_HEAD(smi_infos); +static DECLARE_MUTEX(smi_infos_lock); +static int smi_num; /* Used to sequence the SMIs */ -#define DEVICE_NAME "ipmi_si" - -#define DEFAULT_KCS_IO_PORT 0xca2 -#define DEFAULT_SMIC_IO_PORT 0xca9 -#define DEFAULT_BT_IO_PORT 0xe4 #define DEFAULT_REGSPACING 1 static int si_trydefaults = 1; @@ -1053,38 +1060,23 @@ MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" " by interface number."); +#define IPMI_IO_ADDR_SPACE 0 #define IPMI_MEM_ADDR_SPACE 1 -#define IPMI_IO_ADDR_SPACE 2 +static char *addr_space_to_str[] = { "I/O", "memory" }; -#if defined(CONFIG_ACPI) || defined(CONFIG_DMI) || defined(CONFIG_PCI) -static int is_new_interface(int intf, u8 addr_space, unsigned long base_addr) +static void std_irq_cleanup(struct smi_info *info) { - int i; - - for (i = 0; i < SI_MAX_PARMS; ++i) { - /* Don't check our address. */ - if (i == intf) - continue; - if (si_type[i] != NULL) { - if ((addr_space == IPMI_MEM_ADDR_SPACE && - base_addr == addrs[i]) || - (addr_space == IPMI_IO_ADDR_SPACE && - base_addr == ports[i])) - return 0; - } - else - break; - } - - return 1; + if (info->si_type == SI_BT) + /* Disable the interrupt in the BT interface. */ + info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); + free_irq(info->irq, info); } -#endif static int std_irq_setup(struct smi_info *info) { int rv; - if (! info->irq) + if (!info->irq) return 0; if (info->si_type == SI_BT) { @@ -1093,7 +1085,7 @@ static int std_irq_setup(struct smi_info *info) SA_INTERRUPT, DEVICE_NAME, info); - if (! rv) + if (!rv) /* Enable the interrupt in the BT interface. */ info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, IPMI_BT_INTMASK_ENABLE_IRQ_BIT); @@ -1110,88 +1102,77 @@ static int std_irq_setup(struct smi_info *info) DEVICE_NAME, info->irq); info->irq = 0; } else { + info->irq_cleanup = std_irq_cleanup; printk(" Using irq %d\n", info->irq); } return rv; } -static void std_irq_cleanup(struct smi_info *info) -{ - if (! info->irq) - return; - - if (info->si_type == SI_BT) - /* Disable the interrupt in the BT interface. */ - info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); - free_irq(info->irq, info); -} - static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - return inb((*addr)+(offset*io->regspacing)); + return inb(addr + (offset * io->regspacing)); } static void port_outb(struct si_sm_io *io, unsigned int offset, unsigned char b) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - outb(b, (*addr)+(offset * io->regspacing)); + outb(b, addr + (offset * io->regspacing)); } static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - return (inw((*addr)+(offset * io->regspacing)) >> io->regshift) & 0xff; + return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; } static void port_outw(struct si_sm_io *io, unsigned int offset, unsigned char b) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - outw(b << io->regshift, (*addr)+(offset * io->regspacing)); + outw(b << io->regshift, addr + (offset * io->regspacing)); } static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - return (inl((*addr)+(offset * io->regspacing)) >> io->regshift) & 0xff; + return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; } static void port_outl(struct si_sm_io *io, unsigned int offset, unsigned char b) { - unsigned int *addr = io->info; + unsigned int addr = io->addr_data; - outl(b << io->regshift, (*addr)+(offset * io->regspacing)); + outl(b << io->regshift, addr+(offset * io->regspacing)); } static void port_cleanup(struct smi_info *info) { - unsigned int *addr = info->io.info; - int mapsize; + unsigned int addr = info->io.addr_data; + int mapsize; - if (addr && (*addr)) { + if (addr) { mapsize = ((info->io_size * info->io.regspacing) - (info->io.regspacing - info->io.regsize)); - release_region (*addr, mapsize); + release_region (addr, mapsize); } - kfree(info); } static int port_setup(struct smi_info *info) { - unsigned int *addr = info->io.info; - int mapsize; + unsigned int addr = info->io.addr_data; + int mapsize; - if (! addr || (! *addr)) + if (!addr) return -ENODEV; info->io_cleanup = port_cleanup; @@ -1225,51 +1206,11 @@ static int port_setup(struct smi_info *info) mapsize = ((info->io_size * info->io.regspacing) - (info->io.regspacing - info->io.regsize)); - if (request_region(*addr, mapsize, DEVICE_NAME) == NULL) + if (request_region(addr, mapsize, DEVICE_NAME) == NULL) return -EIO; return 0; } -static int try_init_port(int intf_num, struct smi_info **new_info) -{ - struct smi_info *info; - - if (! ports[intf_num]) - return -ENODEV; - - if (! is_new_interface(intf_num, IPMI_IO_ADDR_SPACE, - ports[intf_num])) - return -ENODEV; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (! info) { - printk(KERN_ERR "ipmi_si: Could not allocate SI data (1)\n"); - return -ENOMEM; - } - memset(info, 0, sizeof(*info)); - - info->io_setup = port_setup; - info->io.info = &(ports[intf_num]); - info->io.addr = NULL; - info->io.regspacing = regspacings[intf_num]; - if (! info->io.regspacing) - info->io.regspacing = DEFAULT_REGSPACING; - info->io.regsize = regsizes[intf_num]; - if (! info->io.regsize) - info->io.regsize = DEFAULT_REGSPACING; - info->io.regshift = regshifts[intf_num]; - info->irq = 0; - info->irq_setup = NULL; - *new_info = info; - - if (si_type[intf_num] == NULL) - si_type[intf_num] = "kcs"; - - printk("ipmi_si: Trying \"%s\" at I/O port 0x%x\n", - si_type[intf_num], ports[intf_num]); - return 0; -} - static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) { return readb((io->addr)+(offset * io->regspacing)); @@ -1321,7 +1262,7 @@ static void mem_outq(struct si_sm_io *io, unsigned int offset, static void mem_cleanup(struct smi_info *info) { - unsigned long *addr = info->io.info; + unsigned long addr = info->io.addr_data; int mapsize; if (info->io.addr) { @@ -1330,17 +1271,16 @@ static void mem_cleanup(struct smi_info *info) mapsize = ((info->io_size * info->io.regspacing) - (info->io.regspacing - info->io.regsize)); - release_mem_region(*addr, mapsize); + release_mem_region(addr, mapsize); } - kfree(info); } static int mem_setup(struct smi_info *info) { - unsigned long *addr = info->io.info; + unsigned long addr = info->io.addr_data; int mapsize; - if (! addr || (! *addr)) + if (!addr) return -ENODEV; info->io_cleanup = mem_cleanup; @@ -1380,57 +1320,83 @@ static int mem_setup(struct smi_info *info) mapsize = ((info->io_size * info->io.regspacing) - (info->io.regspacing - info->io.regsize)); - if (request_mem_region(*addr, mapsize, DEVICE_NAME) == NULL) + if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) return -EIO; - info->io.addr = ioremap(*addr, mapsize); + info->io.addr = ioremap(addr, mapsize); if (info->io.addr == NULL) { - release_mem_region(*addr, mapsize); + release_mem_region(addr, mapsize); return -EIO; } return 0; } -static int try_init_mem(int intf_num, struct smi_info **new_info) + +static __devinit void hardcode_find_bmc(void) { + int i; struct smi_info *info; - if (! addrs[intf_num]) - return -ENODEV; + for (i = 0; i < SI_MAX_PARMS; i++) { + if (!ports[i] && !addrs[i]) + continue; - if (! is_new_interface(intf_num, IPMI_MEM_ADDR_SPACE, - addrs[intf_num])) - return -ENODEV; + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return; - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (! info) { - printk(KERN_ERR "ipmi_si: Could not allocate SI data (2)\n"); - return -ENOMEM; - } - memset(info, 0, sizeof(*info)); + info->addr_source = "hardcoded"; - info->io_setup = mem_setup; - info->io.info = &addrs[intf_num]; - info->io.addr = NULL; - info->io.regspacing = regspacings[intf_num]; - if (! info->io.regspacing) - info->io.regspacing = DEFAULT_REGSPACING; - info->io.regsize = regsizes[intf_num]; - if (! info->io.regsize) - info->io.regsize = DEFAULT_REGSPACING; - info->io.regshift = regshifts[intf_num]; - info->irq = 0; - info->irq_setup = NULL; - *new_info = info; + if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { + info->si_type = SI_KCS; + } else if (strcmp(si_type[i], "smic") == 0) { + info->si_type = SI_SMIC; + } else if (strcmp(si_type[i], "bt") == 0) { + info->si_type = SI_BT; + } else { + printk(KERN_WARNING + "ipmi_si: Interface type specified " + "for interface %d, was invalid: %s\n", + i, si_type[i]); + kfree(info); + continue; + } - if (si_type[intf_num] == NULL) - si_type[intf_num] = "kcs"; + if (ports[i]) { + /* An I/O port */ + info->io_setup = port_setup; + info->io.addr_data = ports[i]; + info->io.addr_type = IPMI_IO_ADDR_SPACE; + } else if (addrs[i]) { + /* A memory port */ + info->io_setup = mem_setup; + info->io.addr_data = addrs[i]; + info->io.addr_type = IPMI_MEM_ADDR_SPACE; + } else { + printk(KERN_WARNING + "ipmi_si: Interface type specified " + "for interface %d, " + "but port and address were not set or " + "set to zero.\n", i); + kfree(info); + continue; + } - printk("ipmi_si: Trying \"%s\" at memory address 0x%lx\n", - si_type[intf_num], addrs[intf_num]); - return 0; -} + info->io.addr = NULL; + info->io.regspacing = regspacings[i]; + if (!info->io.regspacing) + info->io.regspacing = DEFAULT_REGSPACING; + info->io.regsize = regsizes[i]; + if (!info->io.regsize) + info->io.regsize = DEFAULT_REGSPACING; + info->io.regshift = regshifts[i]; + info->irq = irqs[i]; + if (info->irq) + info->irq_setup = std_irq_setup; + try_smi_init(info); + } +} #ifdef CONFIG_ACPI @@ -1470,11 +1436,19 @@ static u32 ipmi_acpi_gpe(void *context) return ACPI_INTERRUPT_HANDLED; } +static void acpi_gpe_irq_cleanup(struct smi_info *info) +{ + if (!info->irq) + return; + + acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); +} + static int acpi_gpe_irq_setup(struct smi_info *info) { acpi_status status; - if (! info->irq) + if (!info->irq) return 0; /* FIXME - is level triggered right? */ @@ -1491,19 +1465,12 @@ static int acpi_gpe_irq_setup(struct smi_info *info) info->irq = 0; return -EINVAL; } else { + info->irq_cleanup = acpi_gpe_irq_cleanup; printk(" Using ACPI GPE %d\n", info->irq); return 0; } } -static void acpi_gpe_irq_cleanup(struct smi_info *info) -{ - if (! info->irq) - return; - - acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); -} - /* * Defined at * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/Docs/TechPapers/IA64/hpspmi.pdf @@ -1546,28 +1513,12 @@ struct SPMITable { s8 spmi_id[1]; /* A '\0' terminated array starts here. */ }; -static int try_init_acpi(int intf_num, struct smi_info **new_info) +static __devinit int try_init_acpi(struct SPMITable *spmi) { struct smi_info *info; - acpi_status status; - struct SPMITable *spmi; char *io_type; u8 addr_space; - if (acpi_disabled) - return -ENODEV; - - if (acpi_failure) - return -ENODEV; - - status = acpi_get_firmware_table("SPMI", intf_num+1, - ACPI_LOGICAL_ADDRESSING, - (struct acpi_table_header **) &spmi); - if (status != AE_OK) { - acpi_failure = 1; - return -ENODEV; - } - if (spmi->IPMIlegacy != 1) { printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); return -ENODEV; @@ -1577,47 +1528,42 @@ static int try_init_acpi(int intf_num, struct smi_info **new_info) addr_space = IPMI_MEM_ADDR_SPACE; else addr_space = IPMI_IO_ADDR_SPACE; - if (! is_new_interface(-1, addr_space, spmi->addr.address)) - return -ENODEV; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); + return -ENOMEM; + } + + info->addr_source = "ACPI"; /* Figure out the interface type. */ switch (spmi->InterfaceType) { case 1: /* KCS */ - si_type[intf_num] = "kcs"; + info->si_type = SI_KCS; break; - case 2: /* SMIC */ - si_type[intf_num] = "smic"; + info->si_type = SI_SMIC; break; - case 3: /* BT */ - si_type[intf_num] = "bt"; + info->si_type = SI_BT; break; - default: printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", spmi->InterfaceType); + kfree(info); return -EIO; } - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (! info) { - printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); - return -ENOMEM; - } - memset(info, 0, sizeof(*info)); - if (spmi->InterruptType & 1) { /* We've got a GPE interrupt. */ info->irq = spmi->GPE; info->irq_setup = acpi_gpe_irq_setup; - info->irq_cleanup = acpi_gpe_irq_cleanup; } else if (spmi->InterruptType & 2) { /* We've got an APIC/SAPIC interrupt. */ info->irq = spmi->GlobalSystemInterrupt; info->irq_setup = std_irq_setup; - info->irq_cleanup = std_irq_cleanup; } else { /* Use the default interrupt setting. */ info->irq = 0; @@ -1626,43 +1572,60 @@ static int try_init_acpi(int intf_num, struct smi_info **new_info) if (spmi->addr.register_bit_width) { /* A (hopefully) properly formed register bit width. */ - regspacings[intf_num] = spmi->addr.register_bit_width / 8; info->io.regspacing = spmi->addr.register_bit_width / 8; } else { - regspacings[intf_num] = DEFAULT_REGSPACING; info->io.regspacing = DEFAULT_REGSPACING; } - regsizes[intf_num] = regspacings[intf_num]; - info->io.regsize = regsizes[intf_num]; - regshifts[intf_num] = spmi->addr.register_bit_offset; - info->io.regshift = regshifts[intf_num]; + info->io.regsize = info->io.regspacing; + info->io.regshift = spmi->addr.register_bit_offset; if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { io_type = "memory"; info->io_setup = mem_setup; - addrs[intf_num] = spmi->addr.address; - info->io.info = &(addrs[intf_num]); + info->io.addr_type = IPMI_IO_ADDR_SPACE; } else if (spmi->addr.address_space_id == ACPI_ADR_SPACE_SYSTEM_IO) { io_type = "I/O"; info->io_setup = port_setup; - ports[intf_num] = spmi->addr.address; - info->io.info = &(ports[intf_num]); + info->io.addr_type = IPMI_MEM_ADDR_SPACE; } else { kfree(info); printk("ipmi_si: Unknown ACPI I/O Address type\n"); return -EIO; } + info->io.addr_data = spmi->addr.address; - *new_info = info; + try_smi_init(info); - printk("ipmi_si: ACPI/SPMI specifies \"%s\" %s SI @ 0x%lx\n", - si_type[intf_num], io_type, (unsigned long) spmi->addr.address); return 0; } + +static __devinit void acpi_find_bmc(void) +{ + acpi_status status; + struct SPMITable *spmi; + int i; + + if (acpi_disabled) + return; + + if (acpi_failure) + return; + + for (i = 0; ; i++) { + status = acpi_get_firmware_table("SPMI", i+1, + ACPI_LOGICAL_ADDRESSING, + (struct acpi_table_header **) + &spmi); + if (status != AE_OK) + return; + + try_init_acpi(spmi); + } +} #endif #ifdef CONFIG_DMI -typedef struct dmi_ipmi_data +struct dmi_ipmi_data { u8 type; u8 addr_space; @@ -1670,49 +1633,46 @@ typedef struct dmi_ipmi_data u8 irq; u8 offset; u8 slave_addr; -} dmi_ipmi_data_t; - -static dmi_ipmi_data_t dmi_data[SI_MAX_DRIVERS]; -static int dmi_data_entries; +}; -static int __init decode_dmi(struct dmi_header *dm, int intf_num) +static int __devinit decode_dmi(struct dmi_header *dm, + struct dmi_ipmi_data *dmi) { u8 *data = (u8 *)dm; unsigned long base_addr; u8 reg_spacing; u8 len = dm->length; - dmi_ipmi_data_t *ipmi_data = dmi_data+intf_num; - ipmi_data->type = data[4]; + dmi->type = data[4]; memcpy(&base_addr, data+8, sizeof(unsigned long)); if (len >= 0x11) { if (base_addr & 1) { /* I/O */ base_addr &= 0xFFFE; - ipmi_data->addr_space = IPMI_IO_ADDR_SPACE; + dmi->addr_space = IPMI_IO_ADDR_SPACE; } else { /* Memory */ - ipmi_data->addr_space = IPMI_MEM_ADDR_SPACE; + dmi->addr_space = IPMI_MEM_ADDR_SPACE; } /* If bit 4 of byte 0x10 is set, then the lsb for the address is odd. */ - ipmi_data->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); + dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); - ipmi_data->irq = data[0x11]; + dmi->irq = data[0x11]; /* The top two bits of byte 0x10 hold the register spacing. */ reg_spacing = (data[0x10] & 0xC0) >> 6; switch(reg_spacing){ case 0x00: /* Byte boundaries */ - ipmi_data->offset = 1; + dmi->offset = 1; break; case 0x01: /* 32-bit boundaries */ - ipmi_data->offset = 4; + dmi->offset = 4; break; case 0x02: /* 16-byte boundaries */ - ipmi_data->offset = 16; + dmi->offset = 16; break; default: /* Some other interface, just ignore it. */ @@ -1726,217 +1686,227 @@ static int __init decode_dmi(struct dmi_header *dm, int intf_num) * wrong (and all that I have seen are I/O) so we just * ignore that bit and assume I/O. Systems that use * memory should use the newer spec, anyway. */ - ipmi_data->base_addr = base_addr & 0xfffe; - ipmi_data->addr_space = IPMI_IO_ADDR_SPACE; - ipmi_data->offset = 1; - } - - ipmi_data->slave_addr = data[6]; - - if (is_new_interface(-1, ipmi_data->addr_space,ipmi_data->base_addr)) { - dmi_data_entries++; - return 0; + dmi->base_addr = base_addr & 0xfffe; + dmi->addr_space = IPMI_IO_ADDR_SPACE; + dmi->offset = 1; } - memset(ipmi_data, 0, sizeof(dmi_ipmi_data_t)); + dmi->slave_addr = data[6]; - return -1; + return 0; } -static void __init dmi_find_bmc(void) +static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) { - struct dmi_device *dev = NULL; - int intf_num = 0; - - while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { - if (intf_num >= SI_MAX_DRIVERS) - break; + struct smi_info *info; - decode_dmi((struct dmi_header *) dev->device_data, intf_num++); + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + printk(KERN_ERR + "ipmi_si: Could not allocate SI data\n"); + return; } -} - -static int try_init_smbios(int intf_num, struct smi_info **new_info) -{ - struct smi_info *info; - dmi_ipmi_data_t *ipmi_data = dmi_data+intf_num; - char *io_type; - if (intf_num >= dmi_data_entries) - return -ENODEV; + info->addr_source = "SMBIOS"; switch (ipmi_data->type) { - case 0x01: /* KCS */ - si_type[intf_num] = "kcs"; - break; - case 0x02: /* SMIC */ - si_type[intf_num] = "smic"; - break; - case 0x03: /* BT */ - si_type[intf_num] = "bt"; - break; - default: - return -EIO; - } - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (! info) { - printk(KERN_ERR "ipmi_si: Could not allocate SI data (4)\n"); - return -ENOMEM; + case 0x01: /* KCS */ + info->si_type = SI_KCS; + break; + case 0x02: /* SMIC */ + info->si_type = SI_SMIC; + break; + case 0x03: /* BT */ + info->si_type = SI_BT; + break; + default: + return; } - memset(info, 0, sizeof(*info)); - if (ipmi_data->addr_space == 1) { - io_type = "memory"; + switch (ipmi_data->addr_space) { + case IPMI_MEM_ADDR_SPACE: info->io_setup = mem_setup; - addrs[intf_num] = ipmi_data->base_addr; - info->io.info = &(addrs[intf_num]); - } else if (ipmi_data->addr_space == 2) { - io_type = "I/O"; + info->io.addr_type = IPMI_MEM_ADDR_SPACE; + break; + + case IPMI_IO_ADDR_SPACE: info->io_setup = port_setup; - ports[intf_num] = ipmi_data->base_addr; - info->io.info = &(ports[intf_num]); - } else { + info->io.addr_type = IPMI_IO_ADDR_SPACE; + break; + + default: kfree(info); - printk("ipmi_si: Unknown SMBIOS I/O Address type.\n"); - return -EIO; + printk(KERN_WARNING + "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", + ipmi_data->addr_space); + return; } + info->io.addr_data = ipmi_data->base_addr; - regspacings[intf_num] = ipmi_data->offset; - info->io.regspacing = regspacings[intf_num]; - if (! info->io.regspacing) + info->io.regspacing = ipmi_data->offset; + if (!info->io.regspacing) info->io.regspacing = DEFAULT_REGSPACING; info->io.regsize = DEFAULT_REGSPACING; - info->io.regshift = regshifts[intf_num]; + info->io.regshift = 0; info->slave_addr = ipmi_data->slave_addr; - irqs[intf_num] = ipmi_data->irq; + info->irq = ipmi_data->irq; + if (info->irq) + info->irq_setup = std_irq_setup; - *new_info = info; + try_smi_init(info); +} - printk("ipmi_si: Found SMBIOS-specified state machine at %s" - " address 0x%lx, slave address 0x%x\n", - io_type, (unsigned long)ipmi_data->base_addr, - ipmi_data->slave_addr); - return 0; +static void __devinit dmi_find_bmc(void) +{ + struct dmi_device *dev = NULL; + struct dmi_ipmi_data data; + int rv; + + while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { + rv = decode_dmi((struct dmi_header *) dev->device_data, &data); + if (!rv) + try_init_dmi(&data); + } } #endif /* CONFIG_DMI */ #ifdef CONFIG_PCI -#define PCI_ERMC_CLASSCODE 0x0C0700 +#define PCI_ERMC_CLASSCODE 0x0C0700 +#define PCI_ERMC_CLASSCODE_MASK 0xffffff00 +#define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff +#define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 +#define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 +#define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 + #define PCI_HP_VENDOR_ID 0x103C #define PCI_MMC_DEVICE_ID 0x121A #define PCI_MMC_ADDR_CW 0x10 -/* Avoid more than one attempt to probe pci smic. */ -static int pci_smic_checked = 0; +static void ipmi_pci_cleanup(struct smi_info *info) +{ + struct pci_dev *pdev = info->addr_source_data; + + pci_disable_device(pdev); +} -static int find_pci_smic(int intf_num, struct smi_info **new_info) +static int __devinit ipmi_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) { - struct smi_info *info; - int error; - struct pci_dev *pci_dev = NULL; - u16 base_addr; - int fe_rmc = 0; + int rv; + int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; + struct smi_info *info; + int first_reg_offset = 0; - if (pci_smic_checked) - return -ENODEV; + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return ENOMEM; - pci_smic_checked = 1; + info->addr_source = "PCI"; - pci_dev = pci_get_device(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID, NULL); - if (! pci_dev) { - pci_dev = pci_get_class(PCI_ERMC_CLASSCODE, NULL); - if (pci_dev && (pci_dev->subsystem_vendor == PCI_HP_VENDOR_ID)) - fe_rmc = 1; - else - return -ENODEV; - } + switch (class_type) { + case PCI_ERMC_CLASSCODE_TYPE_SMIC: + info->si_type = SI_SMIC; + break; - error = pci_read_config_word(pci_dev, PCI_MMC_ADDR_CW, &base_addr); - if (error) - { - pci_dev_put(pci_dev); - printk(KERN_ERR - "ipmi_si: pci_read_config_word() failed (%d).\n", - error); - return -ENODEV; + case PCI_ERMC_CLASSCODE_TYPE_KCS: + info->si_type = SI_KCS; + break; + + case PCI_ERMC_CLASSCODE_TYPE_BT: + info->si_type = SI_BT; + break; + + default: + kfree(info); + printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", + pci_name(pdev), class_type); + return ENOMEM; } - /* Bit 0: 1 specifies programmed I/O, 0 specifies memory mapped I/O */ - if (! (base_addr & 0x0001)) - { - pci_dev_put(pci_dev); - printk(KERN_ERR - "ipmi_si: memory mapped I/O not supported for PCI" - " smic.\n"); - return -ENODEV; + rv = pci_enable_device(pdev); + if (rv) { + printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", + pci_name(pdev)); + kfree(info); + return rv; } - base_addr &= 0xFFFE; - if (! fe_rmc) - /* Data register starts at base address + 1 in eRMC */ - ++base_addr; + info->addr_source_cleanup = ipmi_pci_cleanup; + info->addr_source_data = pdev; - if (! is_new_interface(-1, IPMI_IO_ADDR_SPACE, base_addr)) { - pci_dev_put(pci_dev); - return -ENODEV; - } + if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) + first_reg_offset = 1; - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (! info) { - pci_dev_put(pci_dev); - printk(KERN_ERR "ipmi_si: Could not allocate SI data (5)\n"); - return -ENOMEM; + if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { + info->io_setup = port_setup; + info->io.addr_type = IPMI_IO_ADDR_SPACE; + } else { + info->io_setup = mem_setup; + info->io.addr_type = IPMI_MEM_ADDR_SPACE; } - memset(info, 0, sizeof(*info)); + info->io.addr_data = pci_resource_start(pdev, 0); - info->io_setup = port_setup; - ports[intf_num] = base_addr; - info->io.info = &(ports[intf_num]); - info->io.regspacing = regspacings[intf_num]; - if (! info->io.regspacing) - info->io.regspacing = DEFAULT_REGSPACING; + info->io.regspacing = DEFAULT_REGSPACING; info->io.regsize = DEFAULT_REGSPACING; - info->io.regshift = regshifts[intf_num]; + info->io.regshift = 0; - *new_info = info; + info->irq = pdev->irq; + if (info->irq) + info->irq_setup = std_irq_setup; - irqs[intf_num] = pci_dev->irq; - si_type[intf_num] = "smic"; + info->dev = &pdev->dev; - printk("ipmi_si: Found PCI SMIC at I/O address 0x%lx\n", - (long unsigned int) base_addr); + return try_smi_init(info); +} - pci_dev_put(pci_dev); +static void __devexit ipmi_pci_remove(struct pci_dev *pdev) +{ +} + +#ifdef CONFIG_PM +static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) +{ return 0; } -#endif /* CONFIG_PCI */ -static int try_init_plug_and_play(int intf_num, struct smi_info **new_info) +static int ipmi_pci_resume(struct pci_dev *pdev) { -#ifdef CONFIG_PCI - if (find_pci_smic(intf_num, new_info) == 0) - return 0; + return 0; +} #endif - /* Include other methods here. */ - return -ENODEV; -} +static struct pci_device_id ipmi_pci_devices[] = { + { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, + { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE) } +}; +MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); + +static struct pci_driver ipmi_pci_driver = { + .name = DEVICE_NAME, + .id_table = ipmi_pci_devices, + .probe = ipmi_pci_probe, + .remove = __devexit_p(ipmi_pci_remove), +#ifdef CONFIG_PM + .suspend = ipmi_pci_suspend, + .resume = ipmi_pci_resume, +#endif +}; +#endif /* CONFIG_PCI */ static int try_get_dev_id(struct smi_info *smi_info) { - unsigned char msg[2]; - unsigned char *resp; - unsigned long resp_len; - enum si_sm_result smi_result; - int rv = 0; + unsigned char msg[2]; + unsigned char *resp; + unsigned long resp_len; + enum si_sm_result smi_result; + int rv = 0; resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); - if (! resp) + if (!resp) return -ENOMEM; /* Do a Get Device ID command, since it comes back with some @@ -1972,7 +1942,7 @@ static int try_get_dev_id(struct smi_info *smi_info) /* Otherwise, we got some data. */ resp_len = smi_info->handlers->get_result(smi_info->si_sm, resp, IPMI_MAX_MSG_LENGTH); - if (resp_len < 6) { + if (resp_len < 14) { /* That's odd, it should be longer. */ rv = -EINVAL; goto out; @@ -1985,8 +1955,7 @@ static int try_get_dev_id(struct smi_info *smi_info) } /* Record info from the get device id, in case we need it. */ - memcpy(&smi_info->device_id, &resp[3], - min_t(unsigned long, resp_len-3, sizeof(smi_info->device_id))); + ipmi_demangle_device_id(resp+3, resp_len-3, &smi_info->device_id); out: kfree(resp); @@ -2018,7 +1987,7 @@ static int stat_file_read_proc(char *page, char **start, off_t off, struct smi_info *smi = data; out += sprintf(out, "interrupts_enabled: %d\n", - smi->irq && ! smi->interrupt_disabled); + smi->irq && !smi->interrupt_disabled); out += sprintf(out, "short_timeouts: %ld\n", smi->short_timeouts); out += sprintf(out, "long_timeouts: %ld\n", @@ -2089,15 +2058,14 @@ static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 -#define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} +#define DELL_IANA_MFR_ID 0x0002a2 static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) { struct ipmi_device_id *id = &smi_info->device_id; - const char mfr[3]=DELL_IANA_MFR_ID; - if (! memcmp(mfr, id->manufacturer_id, sizeof(mfr))) { + if (id->manufacturer_id == DELL_IANA_MFR_ID) { if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && - id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { + id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { smi_info->oem_data_avail_handler = oem_data_avail_to_receive_msg_avail; } @@ -2169,8 +2137,7 @@ static void setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) { struct ipmi_device_id *id = &smi_info->device_id; - const char mfr[3]=DELL_IANA_MFR_ID; - if (! memcmp(mfr, id->manufacturer_id, sizeof(mfr)) && + if (id->manufacturer_id == DELL_IANA_MFR_ID && smi_info->si_type == SI_BT) register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); } @@ -2200,62 +2167,110 @@ static inline void wait_for_timer_and_thread(struct smi_info *smi_info) del_timer_sync(&smi_info->si_timer); } -/* Returns 0 if initialized, or negative on an error. */ -static int init_one_smi(int intf_num, struct smi_info **smi) +static struct ipmi_default_vals { - int rv; - struct smi_info *new_smi; + int type; + int port; +} __devinit ipmi_defaults[] = +{ + { .type = SI_KCS, .port = 0xca2 }, + { .type = SI_SMIC, .port = 0xca9 }, + { .type = SI_BT, .port = 0xe4 }, + { .port = 0 } +}; +static __devinit void default_find_bmc(void) +{ + struct smi_info *info; + int i; - rv = try_init_mem(intf_num, &new_smi); - if (rv) - rv = try_init_port(intf_num, &new_smi); -#ifdef CONFIG_ACPI - if (rv && si_trydefaults) - rv = try_init_acpi(intf_num, &new_smi); -#endif -#ifdef CONFIG_DMI - if (rv && si_trydefaults) - rv = try_init_smbios(intf_num, &new_smi); -#endif - if (rv && si_trydefaults) - rv = try_init_plug_and_play(intf_num, &new_smi); + for (i = 0; ; i++) { + if (!ipmi_defaults[i].port) + break; - if (rv) - return rv; + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return; - /* So we know not to free it unless we have allocated one. */ - new_smi->intf = NULL; - new_smi->si_sm = NULL; - new_smi->handlers = NULL; + info->addr_source = NULL; - if (! new_smi->irq_setup) { - new_smi->irq = irqs[intf_num]; - new_smi->irq_setup = std_irq_setup; - new_smi->irq_cleanup = std_irq_cleanup; - } + info->si_type = ipmi_defaults[i].type; + info->io_setup = port_setup; + info->io.addr_data = ipmi_defaults[i].port; + info->io.addr_type = IPMI_IO_ADDR_SPACE; - /* Default to KCS if no type is specified. */ - if (si_type[intf_num] == NULL) { - if (si_trydefaults) - si_type[intf_num] = "kcs"; - else { - rv = -EINVAL; - goto out_err; + info->io.addr = NULL; + info->io.regspacing = DEFAULT_REGSPACING; + info->io.regsize = DEFAULT_REGSPACING; + info->io.regshift = 0; + + if (try_smi_init(info) == 0) { + /* Found one... */ + printk(KERN_INFO "ipmi_si: Found default %s state" + " machine at %s address 0x%lx\n", + si_to_str[info->si_type], + addr_space_to_str[info->io.addr_type], + info->io.addr_data); + return; } } +} + +static int is_new_interface(struct smi_info *info) +{ + struct smi_info *e; + + list_for_each_entry(e, &smi_infos, link) { + if (e->io.addr_type != info->io.addr_type) + continue; + if (e->io.addr_data == info->io.addr_data) + return 0; + } + + return 1; +} + +static int try_smi_init(struct smi_info *new_smi) +{ + int rv; + + if (new_smi->addr_source) { + printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" + " machine at %s address 0x%lx, slave address 0x%x," + " irq %d\n", + new_smi->addr_source, + si_to_str[new_smi->si_type], + addr_space_to_str[new_smi->io.addr_type], + new_smi->io.addr_data, + new_smi->slave_addr, new_smi->irq); + } + + down(&smi_infos_lock); + if (!is_new_interface(new_smi)) { + printk(KERN_WARNING "ipmi_si: duplicate interface\n"); + rv = -EBUSY; + goto out_err; + } - /* Set up the state machine to use. */ - if (strcmp(si_type[intf_num], "kcs") == 0) { + /* So we know not to free it unless we have allocated one. */ + new_smi->intf = NULL; + new_smi->si_sm = NULL; + new_smi->handlers = NULL; + + switch (new_smi->si_type) { + case SI_KCS: new_smi->handlers = &kcs_smi_handlers; - new_smi->si_type = SI_KCS; - } else if (strcmp(si_type[intf_num], "smic") == 0) { + break; + + case SI_SMIC: new_smi->handlers = &smic_smi_handlers; - new_smi->si_type = SI_SMIC; - } else if (strcmp(si_type[intf_num], "bt") == 0) { + break; + + case SI_BT: new_smi->handlers = &bt_smi_handlers; - new_smi->si_type = SI_BT; - } else { + break; + + default: /* No support for anything else yet. */ rv = -EIO; goto out_err; @@ -2263,7 +2278,7 @@ static int init_one_smi(int intf_num, struct smi_info **smi) /* Allocate the state machine's data and initialize it. */ new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); - if (! new_smi->si_sm) { + if (!new_smi->si_sm) { printk(" Could not allocate state machine memory\n"); rv = -ENOMEM; goto out_err; @@ -2284,21 +2299,29 @@ static int init_one_smi(int intf_num, struct smi_info **smi) /* Do low-level detection first. */ if (new_smi->handlers->detect(new_smi->si_sm)) { + if (new_smi->addr_source) + printk(KERN_INFO "ipmi_si: Interface detection" + " failed\n"); rv = -ENODEV; goto out_err; } /* Attempt a get device id command. If it fails, we probably - don't have a SMI here. */ + don't have a BMC here. */ rv = try_get_dev_id(new_smi); - if (rv) + if (rv) { + if (new_smi->addr_source) + printk(KERN_INFO "ipmi_si: There appears to be no BMC" + " at this location\n"); goto out_err; + } setup_oem_data_handler(new_smi); setup_xaction_handlers(new_smi); /* Try to claim any interrupts. */ - new_smi->irq_setup(new_smi); + if (new_smi->irq_setup) + new_smi->irq_setup(new_smi); INIT_LIST_HEAD(&(new_smi->xmit_msgs)); INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); @@ -2308,7 +2331,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi) new_smi->interrupt_disabled = 0; atomic_set(&new_smi->stop_operation, 0); - new_smi->intf_num = intf_num; + new_smi->intf_num = smi_num; + smi_num++; /* Start clearing the flags before we enable interrupts or the timer to avoid racing with the timer. */ @@ -2332,10 +2356,36 @@ static int init_one_smi(int intf_num, struct smi_info **smi) new_smi->thread = kthread_run(ipmi_thread, new_smi, "kipmi%d", new_smi->intf_num); + if (!new_smi->dev) { + /* If we don't already have a device from something + * else (like PCI), then register a new one. */ + new_smi->pdev = platform_device_alloc("ipmi_si", + new_smi->intf_num); + if (rv) { + printk(KERN_ERR + "ipmi_si_intf:" + " Unable to allocate platform device\n"); + goto out_err_stop_timer; + } + new_smi->dev = &new_smi->pdev->dev; + new_smi->dev->driver = &ipmi_driver; + + rv = platform_device_register(new_smi->pdev); + if (rv) { + printk(KERN_ERR + "ipmi_si_intf:" + " Unable to register system interface device:" + " %d\n", + rv); + goto out_err_stop_timer; + } + new_smi->dev_registered = 1; + } + rv = ipmi_register_smi(&handlers, new_smi, - ipmi_version_major(&new_smi->device_id), - ipmi_version_minor(&new_smi->device_id), + &new_smi->device_id, + new_smi->dev, new_smi->slave_addr, &(new_smi->intf)); if (rv) { @@ -2365,9 +2415,11 @@ static int init_one_smi(int intf_num, struct smi_info **smi) goto out_err_stop_timer; } - *smi = new_smi; + list_add_tail(&new_smi->link, &smi_infos); + + up(&smi_infos_lock); - printk(" IPMI %s interface initialized\n", si_type[intf_num]); + printk(" IPMI %s interface initialized\n",si_to_str[new_smi->si_type]); return 0; @@ -2379,7 +2431,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi) if (new_smi->intf) ipmi_unregister_smi(new_smi->intf); - new_smi->irq_cleanup(new_smi); + if (new_smi->irq_cleanup) + new_smi->irq_cleanup(new_smi); /* Wait until we know that we are out of any interrupt handlers might have been running before we freed the @@ -2391,23 +2444,41 @@ static int init_one_smi(int intf_num, struct smi_info **smi) new_smi->handlers->cleanup(new_smi->si_sm); kfree(new_smi->si_sm); } + if (new_smi->addr_source_cleanup) + new_smi->addr_source_cleanup(new_smi); if (new_smi->io_cleanup) new_smi->io_cleanup(new_smi); + if (new_smi->dev_registered) + platform_device_unregister(new_smi->pdev); + + kfree(new_smi); + + up(&smi_infos_lock); + return rv; } -static __init int init_ipmi_si(void) +static __devinit int init_ipmi_si(void) { - int rv = 0; - int pos = 0; int i; char *str; + int rv; if (initialized) return 0; initialized = 1; + /* Register the device drivers. */ + rv = driver_register(&ipmi_driver); + if (rv) { + printk(KERN_ERR + "init_ipmi_si: Unable to register driver: %d\n", + rv); + return rv; + } + + /* Parse out the si_type string into its components. */ str = si_type_str; if (*str != '\0') { @@ -2425,63 +2496,66 @@ static __init int init_ipmi_si(void) printk(KERN_INFO "IPMI System Interface driver.\n"); + hardcode_find_bmc(); + #ifdef CONFIG_DMI dmi_find_bmc(); #endif - rv = init_one_smi(0, &(smi_infos[pos])); - if (rv && ! ports[0] && si_trydefaults) { - /* If we are trying defaults and the initial port is - not set, then set it. */ - si_type[0] = "kcs"; - ports[0] = DEFAULT_KCS_IO_PORT; - rv = init_one_smi(0, &(smi_infos[pos])); - if (rv) { - /* No KCS - try SMIC */ - si_type[0] = "smic"; - ports[0] = DEFAULT_SMIC_IO_PORT; - rv = init_one_smi(0, &(smi_infos[pos])); - } - if (rv) { - /* No SMIC - try BT */ - si_type[0] = "bt"; - ports[0] = DEFAULT_BT_IO_PORT; - rv = init_one_smi(0, &(smi_infos[pos])); - } - } - if (rv == 0) - pos++; +#ifdef CONFIG_ACPI + if (si_trydefaults) + acpi_find_bmc(); +#endif - for (i = 1; i < SI_MAX_PARMS; i++) { - rv = init_one_smi(i, &(smi_infos[pos])); - if (rv == 0) - pos++; +#ifdef CONFIG_PCI + pci_module_init(&ipmi_pci_driver); +#endif + + if (si_trydefaults) { + down(&smi_infos_lock); + if (list_empty(&smi_infos)) { + /* No BMC was found, try defaults. */ + up(&smi_infos_lock); + default_find_bmc(); + } else { + up(&smi_infos_lock); + } } - if (smi_infos[0] == NULL) { + down(&smi_infos_lock); + if (list_empty(&smi_infos)) { + up(&smi_infos_lock); +#ifdef CONFIG_PCI + pci_unregister_driver(&ipmi_pci_driver); +#endif printk("ipmi_si: Unable to find any System Interface(s)\n"); return -ENODEV; + } else { + up(&smi_infos_lock); + return 0; } - - return 0; } module_init(init_ipmi_si); -static void __exit cleanup_one_si(struct smi_info *to_clean) +static void __devexit cleanup_one_si(struct smi_info *to_clean) { int rv; unsigned long flags; - if (! to_clean) + if (!to_clean) return; + list_del(&to_clean->link); + /* Tell the timer and interrupt handlers that we are shutting down. */ spin_lock_irqsave(&(to_clean->si_lock), flags); spin_lock(&(to_clean->msg_lock)); atomic_inc(&to_clean->stop_operation); - to_clean->irq_cleanup(to_clean); + + if (to_clean->irq_cleanup) + to_clean->irq_cleanup(to_clean); spin_unlock(&(to_clean->msg_lock)); spin_unlock_irqrestore(&(to_clean->si_lock), flags); @@ -2511,20 +2585,34 @@ static void __exit cleanup_one_si(struct smi_info *to_clean) kfree(to_clean->si_sm); + if (to_clean->addr_source_cleanup) + to_clean->addr_source_cleanup(to_clean); if (to_clean->io_cleanup) to_clean->io_cleanup(to_clean); + + if (to_clean->dev_registered) + platform_device_unregister(to_clean->pdev); + + kfree(to_clean); } static __exit void cleanup_ipmi_si(void) { - int i; + struct smi_info *e, *tmp_e; - if (! initialized) + if (!initialized) return; - for (i = 0; i < SI_MAX_DRIVERS; i++) { - cleanup_one_si(smi_infos[i]); - } +#ifdef CONFIG_PCI + pci_unregister_driver(&ipmi_pci_driver); +#endif + + down(&smi_infos_lock); + list_for_each_entry_safe(e, tmp_e, &smi_infos, link) + cleanup_one_si(e); + up(&smi_infos_lock); + + driver_unregister(&ipmi_driver); } module_exit(cleanup_ipmi_si); diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h index bf3d4962d6a..4b731b24dc1 100644 --- a/drivers/char/ipmi/ipmi_si_sm.h +++ b/drivers/char/ipmi/ipmi_si_sm.h @@ -50,11 +50,12 @@ struct si_sm_io /* Generic info used by the actual handling routines, the state machine shouldn't touch these. */ - void *info; void __iomem *addr; int regspacing; int regsize; int regshift; + int addr_type; + long addr_data; }; /* Results of SMI events. */ diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c index 1f3159eb1ed..7ece9f3c8f7 100644 --- a/drivers/char/ipmi/ipmi_watchdog.c +++ b/drivers/char/ipmi/ipmi_watchdog.c @@ -996,7 +996,7 @@ static struct notifier_block wdog_panic_notifier = { }; -static void ipmi_new_smi(int if_num) +static void ipmi_new_smi(int if_num, struct device *device) { ipmi_register_watchdog(if_num); } @@ -1158,7 +1158,8 @@ static int __init ipmi_wdog_init(void) } register_reboot_notifier(&wdog_reboot_notifier); - notifier_chain_register(&panic_notifier_list, &wdog_panic_notifier); + atomic_notifier_chain_register(&panic_notifier_list, + &wdog_panic_notifier); printk(KERN_INFO PFX "driver initialized\n"); @@ -1176,7 +1177,8 @@ static __exit void ipmi_unregister_watchdog(void) release_nmi(&ipmi_nmi_handler); #endif - notifier_chain_unregister(&panic_notifier_list, &wdog_panic_notifier); + atomic_notifier_chain_unregister(&panic_notifier_list, + &wdog_panic_notifier); unregister_reboot_notifier(&wdog_reboot_notifier); if (! watchdog_user) diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 26d0116b48d..66719f9d294 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -88,21 +88,15 @@ static inline int uncached_access(struct file *file, unsigned long addr) } #ifndef ARCH_HAS_VALID_PHYS_ADDR_RANGE -static inline int valid_phys_addr_range(unsigned long addr, size_t *count) +static inline int valid_phys_addr_range(unsigned long addr, size_t count) { - unsigned long end_mem; - - end_mem = __pa(high_memory); - if (addr >= end_mem) + if (addr + count > __pa(high_memory)) return 0; - if (*count > end_mem - addr) - *count = end_mem - addr; - return 1; } -static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t *size) +static inline int valid_mmap_phys_addr_range(unsigned long addr, size_t size) { return 1; } @@ -119,7 +113,7 @@ static ssize_t read_mem(struct file * file, char __user * buf, ssize_t read, sz; char *ptr; - if (!valid_phys_addr_range(p, &count)) + if (!valid_phys_addr_range(p, count)) return -EFAULT; read = 0; #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED @@ -177,7 +171,7 @@ static ssize_t write_mem(struct file * file, const char __user * buf, unsigned long copied; void *ptr; - if (!valid_phys_addr_range(p, &count)) + if (!valid_phys_addr_range(p, count)) return -EFAULT; written = 0; @@ -249,7 +243,7 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma) { size_t size = vma->vm_end - vma->vm_start; - if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, &size)) + if (!valid_mmap_phys_addr_range(vma->vm_pgoff << PAGE_SHIFT, size)) return -EINVAL; vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff, @@ -905,7 +899,7 @@ static const struct { unsigned int minor; char *name; umode_t mode; - struct file_operations *fops; + const struct file_operations *fops; } devlist[] = { /* list of minor devices */ {1, "mem", S_IRUSR | S_IWUSR | S_IRGRP, &mem_fops}, {2, "kmem", S_IRUSR | S_IWUSR | S_IRGRP, &kmem_fops}, diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 3e4c0414a01..96eb2a709e2 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -129,7 +129,7 @@ static int misc_open(struct inode * inode, struct file * file) int minor = iminor(inode); struct miscdevice *c; int err = -ENODEV; - struct file_operations *old_fops, *new_fops = NULL; + const struct file_operations *old_fops, *new_fops = NULL; down(&misc_sem); diff --git a/drivers/char/mxser.h b/drivers/char/mxser.h index e7fd0b08e0b..7e188a4d602 100644 --- a/drivers/char/mxser.h +++ b/drivers/char/mxser.h @@ -118,7 +118,7 @@ // enable CTS interrupt #define MOXA_MUST_IER_ECTSI 0x80 -// eanble RTS interrupt +// enable RTS interrupt #define MOXA_MUST_IER_ERTSI 0x40 // enable Xon/Xoff interrupt #define MOXA_MUST_IER_XINT 0x20 diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index d68be61f0a4..fee2aca3f6a 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -941,17 +941,6 @@ static void* mgsl_get_text_ptr(void) return mgsl_get_text_ptr; } -/* - * tmp_buf is used as a temporary buffer by mgsl_write. We need to - * lock it in case the COPY_FROM_USER blocks while swapping in a page, - * and some other program tries to do a serial write at the same time. - * Since the lock will only come under contention when the system is - * swapping and available memory is low, it makes sense to share one - * buffer across all the serial ioports, since it significantly saves - * memory if large numbers of serial ports are open. - */ -static unsigned char *tmp_buf; - static inline int mgsl_paranoia_check(struct mgsl_struct *info, char *name, const char *routine) { @@ -2150,7 +2139,7 @@ static int mgsl_write(struct tty_struct * tty, if (mgsl_paranoia_check(info, tty->name, "mgsl_write")) goto cleanup; - if (!tty || !info->xmit_buf || !tmp_buf) + if (!tty || !info->xmit_buf) goto cleanup; if ( info->params.mode == MGSL_MODE_HDLC || @@ -3438,7 +3427,6 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp) { struct mgsl_struct *info; int retval, line; - unsigned long page; unsigned long flags; /* verify range of specified line number */ @@ -3472,18 +3460,6 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp) goto cleanup; } - if (!tmp_buf) { - page = get_zeroed_page(GFP_KERNEL); - if (!page) { - retval = -ENOMEM; - goto cleanup; - } - if (tmp_buf) - free_page(page); - else - tmp_buf = (unsigned char *) page; - } - info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; spin_lock_irqsave(&info->netlock, flags); @@ -4502,11 +4478,6 @@ static void synclink_cleanup(void) kfree(tmp); } - if (tmp_buf) { - free_page((unsigned long) tmp_buf); - tmp_buf = NULL; - } - if (pci_registered) pci_unregister_driver(&synclink_pci_driver); } @@ -6025,7 +5996,7 @@ static void usc_set_async_mode( struct mgsl_struct *info ) * <15..8> ? RxFIFO IRQ Request Level * * Note: For async mode the receive FIFO level must be set - * to 0 to aviod the situation where the FIFO contains fewer bytes + * to 0 to avoid the situation where the FIFO contains fewer bytes * than the trigger level and no more data is expected. * * <7> 0 Exited Hunt IA (Interrupt Arm) diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c index 738ec2f4e56..b4d1f4eea43 100644 --- a/drivers/char/synclink_gt.c +++ b/drivers/char/synclink_gt.c @@ -1,5 +1,5 @@ /* - * $Id: synclink_gt.c,v 4.22 2006/01/09 20:16:06 paulkf Exp $ + * $Id: synclink_gt.c,v 4.25 2006/02/06 21:20:33 paulkf Exp $ * * Device driver for Microgate SyncLink GT serial adapters. * @@ -92,7 +92,7 @@ * module identification */ static char *driver_name = "SyncLink GT"; -static char *driver_version = "$Revision: 4.22 $"; +static char *driver_version = "$Revision: 4.25 $"; static char *tty_driver_name = "synclink_gt"; static char *tty_dev_prefix = "ttySLG"; MODULE_LICENSE("GPL"); @@ -188,6 +188,20 @@ static void hdlcdev_exit(struct slgt_info *info); #define SLGT_REG_SIZE 256 /* + * conditional wait facility + */ +struct cond_wait { + struct cond_wait *next; + wait_queue_head_t q; + wait_queue_t wait; + unsigned int data; +}; +static void init_cond_wait(struct cond_wait *w, unsigned int data); +static void add_cond_wait(struct cond_wait **head, struct cond_wait *w); +static void remove_cond_wait(struct cond_wait **head, struct cond_wait *w); +static void flush_cond_wait(struct cond_wait **head); + +/* * DMA buffer descriptor and access macros */ struct slgt_desc @@ -269,6 +283,9 @@ struct slgt_info { struct timer_list tx_timer; struct timer_list rx_timer; + unsigned int gpio_present; + struct cond_wait *gpio_wait_q; + spinlock_t lock; /* spinlock for synchronizing with ISR */ struct work_struct task; @@ -379,6 +396,11 @@ static MGSL_PARAMS default_params = { #define MASK_OVERRUN BIT4 #define GSR 0x00 /* global status */ +#define JCR 0x04 /* JTAG control */ +#define IODR 0x08 /* GPIO direction */ +#define IOER 0x0c /* GPIO interrupt enable */ +#define IOVR 0x10 /* GPIO value */ +#define IOSR 0x14 /* GPIO interrupt status */ #define TDR 0x80 /* tx data */ #define RDR 0x80 /* rx data */ #define TCR 0x82 /* tx control */ @@ -503,6 +525,9 @@ static int tiocmset(struct tty_struct *tty, struct file *file, static void set_break(struct tty_struct *tty, int break_state); static int get_interface(struct slgt_info *info, int __user *if_mode); static int set_interface(struct slgt_info *info, int if_mode); +static int set_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); +static int get_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); +static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *gpio); /* * driver functions @@ -1112,6 +1137,12 @@ static int ioctl(struct tty_struct *tty, struct file *file, return get_interface(info, argp); case MGSL_IOCSIF: return set_interface(info,(int)arg); + case MGSL_IOCSGPIO: + return set_gpio(info, argp); + case MGSL_IOCGGPIO: + return get_gpio(info, argp); + case MGSL_IOCWAITGPIO: + return wait_gpio(info, argp); case TIOCGICOUNT: spin_lock_irqsave(&info->lock,flags); cnow = info->icount; @@ -1762,10 +1793,6 @@ static void rx_async(struct slgt_info *info) DBGDATA(info, p, count, "rx"); for(i=0 ; i < count; i+=2, p+=2) { - if (tty && chars) { - tty_flip_buffer_push(tty); - chars = 0; - } ch = *p; icount->rx++; @@ -2158,6 +2185,24 @@ static void isr_txeom(struct slgt_info *info, unsigned short status) } } +static void isr_gpio(struct slgt_info *info, unsigned int changed, unsigned int state) +{ + struct cond_wait *w, *prev; + + /* wake processes waiting for specific transitions */ + for (w = info->gpio_wait_q, prev = NULL ; w != NULL ; w = w->next) { + if (w->data & changed) { + w->data = state; + wake_up_interruptible(&w->q); + if (prev != NULL) + prev->next = w->next; + else + info->gpio_wait_q = w->next; + } else + prev = w; + } +} + /* interrupt service routine * * irq interrupt number @@ -2193,6 +2238,22 @@ static irqreturn_t slgt_interrupt(int irq, void *dev_id, struct pt_regs * regs) } } + if (info->gpio_present) { + unsigned int state; + unsigned int changed; + while ((changed = rd_reg32(info, IOSR)) != 0) { + DBGISR(("%s iosr=%08x\n", info->device_name, changed)); + /* read latched state of GPIO signals */ + state = rd_reg32(info, IOVR); + /* clear pending GPIO interrupt bits */ + wr_reg32(info, IOSR, changed); + for (i=0 ; i < info->port_count ; i++) { + if (info->port_array[i] != NULL) + isr_gpio(info->port_array[i], changed, state); + } + } + } + for(i=0; i < info->port_count ; i++) { struct slgt_info *port = info->port_array[i]; @@ -2276,6 +2337,8 @@ static void shutdown(struct slgt_info *info) set_signals(info); } + flush_cond_wait(&info->gpio_wait_q); + spin_unlock_irqrestore(&info->lock,flags); if (info->tty) @@ -2650,6 +2713,175 @@ static int set_interface(struct slgt_info *info, int if_mode) return 0; } +/* + * set general purpose IO pin state and direction + * + * user_gpio fields: + * state each bit indicates a pin state + * smask set bit indicates pin state to set + * dir each bit indicates a pin direction (0=input, 1=output) + * dmask set bit indicates pin direction to set + */ +static int set_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + unsigned long flags; + struct gpio_desc gpio; + __u32 data; + + if (!info->gpio_present) + return -EINVAL; + if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s set_gpio state=%08x smask=%08x dir=%08x dmask=%08x\n", + info->device_name, gpio.state, gpio.smask, + gpio.dir, gpio.dmask)); + + spin_lock_irqsave(&info->lock,flags); + if (gpio.dmask) { + data = rd_reg32(info, IODR); + data |= gpio.dmask & gpio.dir; + data &= ~(gpio.dmask & ~gpio.dir); + wr_reg32(info, IODR, data); + } + if (gpio.smask) { + data = rd_reg32(info, IOVR); + data |= gpio.smask & gpio.state; + data &= ~(gpio.smask & ~gpio.state); + wr_reg32(info, IOVR, data); + } + spin_unlock_irqrestore(&info->lock,flags); + + return 0; +} + +/* + * get general purpose IO pin state and direction + */ +static int get_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + struct gpio_desc gpio; + if (!info->gpio_present) + return -EINVAL; + gpio.state = rd_reg32(info, IOVR); + gpio.smask = 0xffffffff; + gpio.dir = rd_reg32(info, IODR); + gpio.dmask = 0xffffffff; + if (copy_to_user(user_gpio, &gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s get_gpio state=%08x dir=%08x\n", + info->device_name, gpio.state, gpio.dir)); + return 0; +} + +/* + * conditional wait facility + */ +static void init_cond_wait(struct cond_wait *w, unsigned int data) +{ + init_waitqueue_head(&w->q); + init_waitqueue_entry(&w->wait, current); + w->data = data; +} + +static void add_cond_wait(struct cond_wait **head, struct cond_wait *w) +{ + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&w->q, &w->wait); + w->next = *head; + *head = w; +} + +static void remove_cond_wait(struct cond_wait **head, struct cond_wait *cw) +{ + struct cond_wait *w, *prev; + remove_wait_queue(&cw->q, &cw->wait); + set_current_state(TASK_RUNNING); + for (w = *head, prev = NULL ; w != NULL ; prev = w, w = w->next) { + if (w == cw) { + if (prev != NULL) + prev->next = w->next; + else + *head = w->next; + break; + } + } +} + +static void flush_cond_wait(struct cond_wait **head) +{ + while (*head != NULL) { + wake_up_interruptible(&(*head)->q); + *head = (*head)->next; + } +} + +/* + * wait for general purpose I/O pin(s) to enter specified state + * + * user_gpio fields: + * state - bit indicates target pin state + * smask - set bit indicates watched pin + * + * The wait ends when at least one watched pin enters the specified + * state. When 0 (no error) is returned, user_gpio->state is set to the + * state of all GPIO pins when the wait ends. + * + * Note: Each pin may be a dedicated input, dedicated output, or + * configurable input/output. The number and configuration of pins + * varies with the specific adapter model. Only input pins (dedicated + * or configured) can be monitored with this function. + */ +static int wait_gpio(struct slgt_info *info, struct gpio_desc __user *user_gpio) +{ + unsigned long flags; + int rc = 0; + struct gpio_desc gpio; + struct cond_wait wait; + u32 state; + + if (!info->gpio_present) + return -EINVAL; + if (copy_from_user(&gpio, user_gpio, sizeof(gpio))) + return -EFAULT; + DBGINFO(("%s wait_gpio() state=%08x smask=%08x\n", + info->device_name, gpio.state, gpio.smask)); + /* ignore output pins identified by set IODR bit */ + if ((gpio.smask &= ~rd_reg32(info, IODR)) == 0) + return -EINVAL; + init_cond_wait(&wait, gpio.smask); + + spin_lock_irqsave(&info->lock, flags); + /* enable interrupts for watched pins */ + wr_reg32(info, IOER, rd_reg32(info, IOER) | gpio.smask); + /* get current pin states */ + state = rd_reg32(info, IOVR); + + if (gpio.smask & ~(state ^ gpio.state)) { + /* already in target state */ + gpio.state = state; + } else { + /* wait for target state */ + add_cond_wait(&info->gpio_wait_q, &wait); + spin_unlock_irqrestore(&info->lock, flags); + schedule(); + if (signal_pending(current)) + rc = -ERESTARTSYS; + else + gpio.state = wait.data; + spin_lock_irqsave(&info->lock, flags); + remove_cond_wait(&info->gpio_wait_q, &wait); + } + + /* disable all GPIO interrupts if no waiting processes */ + if (info->gpio_wait_q == NULL) + wr_reg32(info, IOER, 0); + spin_unlock_irqrestore(&info->lock,flags); + + if ((rc == 0) && copy_to_user(user_gpio, &gpio, sizeof(gpio))) + rc = -EFAULT; + return rc; +} + static int modem_input_wait(struct slgt_info *info,int arg) { unsigned long flags; @@ -3166,8 +3398,10 @@ static void device_init(int adapter_num, struct pci_dev *pdev) } else { port_array[0]->irq_requested = 1; adapter_test(port_array[0]); - for (i=1 ; i < port_count ; i++) + for (i=1 ; i < port_count ; i++) { port_array[i]->init_error = port_array[0]->init_error; + port_array[i]->gpio_present = port_array[0]->gpio_present; + } } } } @@ -4301,7 +4535,7 @@ static int register_test(struct slgt_info *info) break; } } - + info->gpio_present = (rd_reg32(info, JCR) & BIT5) ? 1 : 0; info->init_error = rc ? 0 : DiagStatus_AddressFailure; return rc; } diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c index 4c272189cd4..2546637a55c 100644 --- a/drivers/char/tlclk.c +++ b/drivers/char/tlclk.c @@ -767,6 +767,7 @@ static int __init tlclk_init(void) printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major); return ret; } + tlclk_major = ret; alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL); if (!alarm_events) goto out1; diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 48d795bb8c4..811dadb9ce3 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -543,14 +543,12 @@ void tty_ldisc_put(int disc) struct tty_ldisc *ld; unsigned long flags; - if (disc < N_TTY || disc >= NR_LDISCS) - BUG(); + BUG_ON(disc < N_TTY || disc >= NR_LDISCS); spin_lock_irqsave(&tty_ldisc_lock, flags); ld = &tty_ldiscs[disc]; - if(ld->refcount == 0) - BUG(); - ld->refcount --; + BUG_ON(ld->refcount == 0); + ld->refcount--; module_put(ld->owner); spin_unlock_irqrestore(&tty_ldisc_lock, flags); } @@ -645,8 +643,7 @@ void tty_ldisc_deref(struct tty_ldisc *ld) { unsigned long flags; - if(ld == NULL) - BUG(); + BUG_ON(ld == NULL); spin_lock_irqsave(&tty_ldisc_lock, flags); if(ld->refcount == 0) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index aed80e6aec6..9b6ae7dc8b8 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -52,9 +52,8 @@ static void handle_update(void *data); * changes to devices when the CPU clock speed changes. * The mutex locks both lists. */ -static struct notifier_block *cpufreq_policy_notifier_list; -static struct notifier_block *cpufreq_transition_notifier_list; -static DECLARE_RWSEM (cpufreq_notifier_rwsem); +static BLOCKING_NOTIFIER_HEAD(cpufreq_policy_notifier_list); +static BLOCKING_NOTIFIER_HEAD(cpufreq_transition_notifier_list); static LIST_HEAD(cpufreq_governor_list); @@ -247,8 +246,6 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state) dprintk("notification %u of frequency transition to %u kHz\n", state, freqs->new); - down_read(&cpufreq_notifier_rwsem); - policy = cpufreq_cpu_data[freqs->cpu]; switch (state) { @@ -266,20 +263,19 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state) freqs->old = policy->cur; } } - notifier_call_chain(&cpufreq_transition_notifier_list, - CPUFREQ_PRECHANGE, freqs); + blocking_notifier_call_chain(&cpufreq_transition_notifier_list, + CPUFREQ_PRECHANGE, freqs); adjust_jiffies(CPUFREQ_PRECHANGE, freqs); break; case CPUFREQ_POSTCHANGE: adjust_jiffies(CPUFREQ_POSTCHANGE, freqs); - notifier_call_chain(&cpufreq_transition_notifier_list, - CPUFREQ_POSTCHANGE, freqs); + blocking_notifier_call_chain(&cpufreq_transition_notifier_list, + CPUFREQ_POSTCHANGE, freqs); if (likely(policy) && likely(policy->cpu == freqs->cpu)) policy->cur = freqs->new; break; } - up_read(&cpufreq_notifier_rwsem); } EXPORT_SYMBOL_GPL(cpufreq_notify_transition); @@ -1007,7 +1003,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, pm_message_t pmsg) freqs.old = cpu_policy->cur; freqs.new = cur_freq; - notifier_call_chain(&cpufreq_transition_notifier_list, + blocking_notifier_call_chain(&cpufreq_transition_notifier_list, CPUFREQ_SUSPENDCHANGE, &freqs); adjust_jiffies(CPUFREQ_SUSPENDCHANGE, &freqs); @@ -1088,7 +1084,8 @@ static int cpufreq_resume(struct sys_device * sysdev) freqs.old = cpu_policy->cur; freqs.new = cur_freq; - notifier_call_chain(&cpufreq_transition_notifier_list, + blocking_notifier_call_chain( + &cpufreq_transition_notifier_list, CPUFREQ_RESUMECHANGE, &freqs); adjust_jiffies(CPUFREQ_RESUMECHANGE, &freqs); @@ -1125,24 +1122,24 @@ static struct sysdev_driver cpufreq_sysdev_driver = { * changes in cpufreq policy. * * This function may sleep, and has the same return conditions as - * notifier_chain_register. + * blocking_notifier_chain_register. */ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list) { int ret; - down_write(&cpufreq_notifier_rwsem); switch (list) { case CPUFREQ_TRANSITION_NOTIFIER: - ret = notifier_chain_register(&cpufreq_transition_notifier_list, nb); + ret = blocking_notifier_chain_register( + &cpufreq_transition_notifier_list, nb); break; case CPUFREQ_POLICY_NOTIFIER: - ret = notifier_chain_register(&cpufreq_policy_notifier_list, nb); + ret = blocking_notifier_chain_register( + &cpufreq_policy_notifier_list, nb); break; default: ret = -EINVAL; } - up_write(&cpufreq_notifier_rwsem); return ret; } @@ -1157,24 +1154,24 @@ EXPORT_SYMBOL(cpufreq_register_notifier); * Remove a driver from the CPU frequency notifier list. * * This function may sleep, and has the same return conditions as - * notifier_chain_unregister. + * blocking_notifier_chain_unregister. */ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list) { int ret; - down_write(&cpufreq_notifier_rwsem); switch (list) { case CPUFREQ_TRANSITION_NOTIFIER: - ret = notifier_chain_unregister(&cpufreq_transition_notifier_list, nb); + ret = blocking_notifier_chain_unregister( + &cpufreq_transition_notifier_list, nb); break; case CPUFREQ_POLICY_NOTIFIER: - ret = notifier_chain_unregister(&cpufreq_policy_notifier_list, nb); + ret = blocking_notifier_chain_unregister( + &cpufreq_policy_notifier_list, nb); break; default: ret = -EINVAL; } - up_write(&cpufreq_notifier_rwsem); return ret; } @@ -1346,29 +1343,23 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_poli if (ret) goto error_out; - down_read(&cpufreq_notifier_rwsem); - /* adjust if necessary - all reasons */ - notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_ADJUST, - policy); + blocking_notifier_call_chain(&cpufreq_policy_notifier_list, + CPUFREQ_ADJUST, policy); /* adjust if necessary - hardware incompatibility*/ - notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_INCOMPATIBLE, - policy); + blocking_notifier_call_chain(&cpufreq_policy_notifier_list, + CPUFREQ_INCOMPATIBLE, policy); /* verify the cpu speed can be set within this limit, which might be different to the first one */ ret = cpufreq_driver->verify(policy); - if (ret) { - up_read(&cpufreq_notifier_rwsem); + if (ret) goto error_out; - } /* notification of the new policy */ - notifier_call_chain(&cpufreq_policy_notifier_list, CPUFREQ_NOTIFY, - policy); - - up_read(&cpufreq_notifier_rwsem); + blocking_notifier_call_chain(&cpufreq_policy_notifier_list, + CPUFREQ_NOTIFY, policy); data->min = policy->min; data->max = policy->max; diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c index ac38766b258..037f6bf4543 100644 --- a/drivers/cpufreq/cpufreq_conservative.c +++ b/drivers/cpufreq/cpufreq_conservative.c @@ -35,12 +35,7 @@ */ #define DEF_FREQUENCY_UP_THRESHOLD (80) -#define MIN_FREQUENCY_UP_THRESHOLD (0) -#define MAX_FREQUENCY_UP_THRESHOLD (100) - #define DEF_FREQUENCY_DOWN_THRESHOLD (20) -#define MIN_FREQUENCY_DOWN_THRESHOLD (0) -#define MAX_FREQUENCY_DOWN_THRESHOLD (100) /* * The polling frequency of this governor depends on the capability of @@ -53,10 +48,14 @@ * All times here are in uS. */ static unsigned int def_sampling_rate; -#define MIN_SAMPLING_RATE (def_sampling_rate / 2) +#define MIN_SAMPLING_RATE_RATIO (2) +/* for correct statistics, we need at least 10 ticks between each measure */ +#define MIN_STAT_SAMPLING_RATE (MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10)) +#define MIN_SAMPLING_RATE (def_sampling_rate / MIN_SAMPLING_RATE_RATIO) #define MAX_SAMPLING_RATE (500 * def_sampling_rate) -#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (100000) -#define DEF_SAMPLING_DOWN_FACTOR (5) +#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000) +#define DEF_SAMPLING_DOWN_FACTOR (1) +#define MAX_SAMPLING_DOWN_FACTOR (10) #define TRANSITION_LATENCY_LIMIT (10 * 1000) static void do_dbs_timer(void *data); @@ -66,6 +65,8 @@ struct cpu_dbs_info_s { unsigned int prev_cpu_idle_up; unsigned int prev_cpu_idle_down; unsigned int enable; + unsigned int down_skip; + unsigned int requested_freq; }; static DEFINE_PER_CPU(struct cpu_dbs_info_s, cpu_dbs_info); @@ -87,6 +88,8 @@ static struct dbs_tuners dbs_tuners_ins = { .up_threshold = DEF_FREQUENCY_UP_THRESHOLD, .down_threshold = DEF_FREQUENCY_DOWN_THRESHOLD, .sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR, + .ignore_nice = 0, + .freq_step = 5, }; static inline unsigned int get_cpu_idle_time(unsigned int cpu) @@ -136,7 +139,7 @@ static ssize_t store_sampling_down_factor(struct cpufreq_policy *unused, unsigned int input; int ret; ret = sscanf (buf, "%u", &input); - if (ret != 1 ) + if (ret != 1 || input > MAX_SAMPLING_DOWN_FACTOR || input < 1) return -EINVAL; mutex_lock(&dbs_mutex); @@ -173,8 +176,7 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused, ret = sscanf (buf, "%u", &input); mutex_lock(&dbs_mutex); - if (ret != 1 || input > MAX_FREQUENCY_UP_THRESHOLD || - input < MIN_FREQUENCY_UP_THRESHOLD || + if (ret != 1 || input > 100 || input < 0 || input <= dbs_tuners_ins.down_threshold) { mutex_unlock(&dbs_mutex); return -EINVAL; @@ -194,8 +196,7 @@ static ssize_t store_down_threshold(struct cpufreq_policy *unused, ret = sscanf (buf, "%u", &input); mutex_lock(&dbs_mutex); - if (ret != 1 || input > MAX_FREQUENCY_DOWN_THRESHOLD || - input < MIN_FREQUENCY_DOWN_THRESHOLD || + if (ret != 1 || input > 100 || input < 0 || input >= dbs_tuners_ins.up_threshold) { mutex_unlock(&dbs_mutex); return -EINVAL; @@ -297,31 +298,17 @@ static struct attribute_group dbs_attr_group = { static void dbs_check_cpu(int cpu) { unsigned int idle_ticks, up_idle_ticks, down_idle_ticks; + unsigned int tmp_idle_ticks, total_idle_ticks; unsigned int freq_step; unsigned int freq_down_sampling_rate; - static int down_skip[NR_CPUS]; - static int requested_freq[NR_CPUS]; - static unsigned short init_flag = 0; - struct cpu_dbs_info_s *this_dbs_info; - struct cpu_dbs_info_s *dbs_info; - + struct cpu_dbs_info_s *this_dbs_info = &per_cpu(cpu_dbs_info, cpu); struct cpufreq_policy *policy; - unsigned int j; - this_dbs_info = &per_cpu(cpu_dbs_info, cpu); if (!this_dbs_info->enable) return; policy = this_dbs_info->cur_policy; - if ( init_flag == 0 ) { - for_each_online_cpu(j) { - dbs_info = &per_cpu(cpu_dbs_info, j); - requested_freq[j] = dbs_info->cur_policy->cur; - } - init_flag = 1; - } - /* * The default safe range is 20% to 80% * Every sampling_rate, we check @@ -337,39 +324,29 @@ static void dbs_check_cpu(int cpu) */ /* Check for frequency increase */ - idle_ticks = UINT_MAX; - for_each_cpu_mask(j, policy->cpus) { - unsigned int tmp_idle_ticks, total_idle_ticks; - struct cpu_dbs_info_s *j_dbs_info; - j_dbs_info = &per_cpu(cpu_dbs_info, j); - /* Check for frequency increase */ - total_idle_ticks = get_cpu_idle_time(j); - tmp_idle_ticks = total_idle_ticks - - j_dbs_info->prev_cpu_idle_up; - j_dbs_info->prev_cpu_idle_up = total_idle_ticks; - - if (tmp_idle_ticks < idle_ticks) - idle_ticks = tmp_idle_ticks; - } + /* Check for frequency increase */ + total_idle_ticks = get_cpu_idle_time(cpu); + tmp_idle_ticks = total_idle_ticks - + this_dbs_info->prev_cpu_idle_up; + this_dbs_info->prev_cpu_idle_up = total_idle_ticks; + + if (tmp_idle_ticks < idle_ticks) + idle_ticks = tmp_idle_ticks; /* Scale idle ticks by 100 and compare with up and down ticks */ idle_ticks *= 100; up_idle_ticks = (100 - dbs_tuners_ins.up_threshold) * - usecs_to_jiffies(dbs_tuners_ins.sampling_rate); + usecs_to_jiffies(dbs_tuners_ins.sampling_rate); if (idle_ticks < up_idle_ticks) { - down_skip[cpu] = 0; - for_each_cpu_mask(j, policy->cpus) { - struct cpu_dbs_info_s *j_dbs_info; + this_dbs_info->down_skip = 0; + this_dbs_info->prev_cpu_idle_down = + this_dbs_info->prev_cpu_idle_up; - j_dbs_info = &per_cpu(cpu_dbs_info, j); - j_dbs_info->prev_cpu_idle_down = - j_dbs_info->prev_cpu_idle_up; - } /* if we are already at full speed then break out early */ - if (requested_freq[cpu] == policy->max) + if (this_dbs_info->requested_freq == policy->max) return; freq_step = (dbs_tuners_ins.freq_step * policy->max) / 100; @@ -378,49 +355,45 @@ static void dbs_check_cpu(int cpu) if (unlikely(freq_step == 0)) freq_step = 5; - requested_freq[cpu] += freq_step; - if (requested_freq[cpu] > policy->max) - requested_freq[cpu] = policy->max; + this_dbs_info->requested_freq += freq_step; + if (this_dbs_info->requested_freq > policy->max) + this_dbs_info->requested_freq = policy->max; - __cpufreq_driver_target(policy, requested_freq[cpu], + __cpufreq_driver_target(policy, this_dbs_info->requested_freq, CPUFREQ_RELATION_H); return; } /* Check for frequency decrease */ - down_skip[cpu]++; - if (down_skip[cpu] < dbs_tuners_ins.sampling_down_factor) + this_dbs_info->down_skip++; + if (this_dbs_info->down_skip < dbs_tuners_ins.sampling_down_factor) return; - idle_ticks = UINT_MAX; - for_each_cpu_mask(j, policy->cpus) { - unsigned int tmp_idle_ticks, total_idle_ticks; - struct cpu_dbs_info_s *j_dbs_info; + /* Check for frequency decrease */ + total_idle_ticks = this_dbs_info->prev_cpu_idle_up; + tmp_idle_ticks = total_idle_ticks - + this_dbs_info->prev_cpu_idle_down; + this_dbs_info->prev_cpu_idle_down = total_idle_ticks; - j_dbs_info = &per_cpu(cpu_dbs_info, j); - total_idle_ticks = j_dbs_info->prev_cpu_idle_up; - tmp_idle_ticks = total_idle_ticks - - j_dbs_info->prev_cpu_idle_down; - j_dbs_info->prev_cpu_idle_down = total_idle_ticks; - - if (tmp_idle_ticks < idle_ticks) - idle_ticks = tmp_idle_ticks; - } + if (tmp_idle_ticks < idle_ticks) + idle_ticks = tmp_idle_ticks; /* Scale idle ticks by 100 and compare with up and down ticks */ idle_ticks *= 100; - down_skip[cpu] = 0; + this_dbs_info->down_skip = 0; freq_down_sampling_rate = dbs_tuners_ins.sampling_rate * dbs_tuners_ins.sampling_down_factor; down_idle_ticks = (100 - dbs_tuners_ins.down_threshold) * - usecs_to_jiffies(freq_down_sampling_rate); + usecs_to_jiffies(freq_down_sampling_rate); if (idle_ticks > down_idle_ticks) { - /* if we are already at the lowest speed then break out early + /* + * if we are already at the lowest speed then break out early * or if we 'cannot' reduce the speed as the user might want - * freq_step to be zero */ - if (requested_freq[cpu] == policy->min + * freq_step to be zero + */ + if (this_dbs_info->requested_freq == policy->min || dbs_tuners_ins.freq_step == 0) return; @@ -430,13 +403,12 @@ static void dbs_check_cpu(int cpu) if (unlikely(freq_step == 0)) freq_step = 5; - requested_freq[cpu] -= freq_step; - if (requested_freq[cpu] < policy->min) - requested_freq[cpu] = policy->min; + this_dbs_info->requested_freq -= freq_step; + if (this_dbs_info->requested_freq < policy->min) + this_dbs_info->requested_freq = policy->min; - __cpufreq_driver_target(policy, - requested_freq[cpu], - CPUFREQ_RELATION_H); + __cpufreq_driver_target(policy, this_dbs_info->requested_freq, + CPUFREQ_RELATION_H); return; } } @@ -493,11 +465,13 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, j_dbs_info = &per_cpu(cpu_dbs_info, j); j_dbs_info->cur_policy = policy; - j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(j); + j_dbs_info->prev_cpu_idle_up = get_cpu_idle_time(cpu); j_dbs_info->prev_cpu_idle_down = j_dbs_info->prev_cpu_idle_up; } this_dbs_info->enable = 1; + this_dbs_info->down_skip = 0; + this_dbs_info->requested_freq = policy->cur; sysfs_create_group(&policy->kobj, &dbs_attr_group); dbs_enable++; /* @@ -507,16 +481,17 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, if (dbs_enable == 1) { unsigned int latency; /* policy latency is in nS. Convert it to uS first */ + latency = policy->cpuinfo.transition_latency / 1000; + if (latency == 0) + latency = 1; - latency = policy->cpuinfo.transition_latency; - if (latency < 1000) - latency = 1000; - - def_sampling_rate = (latency / 1000) * + def_sampling_rate = 10 * latency * DEF_SAMPLING_RATE_LATENCY_MULTIPLIER; + + if (def_sampling_rate < MIN_STAT_SAMPLING_RATE) + def_sampling_rate = MIN_STAT_SAMPLING_RATE; + dbs_tuners_ins.sampling_rate = def_sampling_rate; - dbs_tuners_ins.ignore_nice = 0; - dbs_tuners_ins.freq_step = 5; dbs_timer_init(); } diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c index 69aa1db8336..956d121cb16 100644 --- a/drivers/cpufreq/cpufreq_ondemand.c +++ b/drivers/cpufreq/cpufreq_ondemand.c @@ -84,6 +84,7 @@ struct dbs_tuners { static struct dbs_tuners dbs_tuners_ins = { .up_threshold = DEF_FREQUENCY_UP_THRESHOLD, .sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR, + .ignore_nice = 0, }; static inline unsigned int get_cpu_idle_time(unsigned int cpu) @@ -350,6 +351,9 @@ static void dbs_check_cpu(int cpu) freq_next = (freq_next * policy->cur) / (dbs_tuners_ins.up_threshold - 10); + if (freq_next < policy->min) + freq_next = policy->min; + if (freq_next <= ((policy->cur * 95) / 100)) __cpufreq_driver_target(policy, freq_next, CPUFREQ_RELATION_L); } @@ -395,8 +399,11 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, return -EINVAL; if (policy->cpuinfo.transition_latency > - (TRANSITION_LATENCY_LIMIT * 1000)) + (TRANSITION_LATENCY_LIMIT * 1000)) { + printk(KERN_WARNING "ondemand governor failed to load " + "due to too long transition latency\n"); return -EINVAL; + } if (this_dbs_info->enable) /* Already enabled */ break; @@ -431,8 +438,6 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy, def_sampling_rate = MIN_STAT_SAMPLING_RATE; dbs_tuners_ins.sampling_rate = def_sampling_rate; - dbs_tuners_ins.ignore_nice = 0; - dbs_timer_init(); } diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 52f3eb45d2b..b582d0cdc24 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -64,35 +64,35 @@ config EDAC_AMD76X config EDAC_E7XXX tristate "Intel e7xxx (e7205, e7500, e7501, e7505)" - depends on EDAC_MM_EDAC && PCI + depends on EDAC_MM_EDAC && PCI && X86_32 help Support for error detection and correction on the Intel E7205, E7500, E7501 and E7505 server chipsets. config EDAC_E752X tristate "Intel e752x (e7520, e7525, e7320)" - depends on EDAC_MM_EDAC && PCI + depends on EDAC_MM_EDAC && PCI && X86 help Support for error detection and correction on the Intel E7520, E7525, E7320 server chipsets. config EDAC_I82875P tristate "Intel 82875p (D82875P, E7210)" - depends on EDAC_MM_EDAC && PCI + depends on EDAC_MM_EDAC && PCI && X86_32 help Support for error detection and correction on the Intel DP82785P and E7210 server chipsets. config EDAC_I82860 tristate "Intel 82860" - depends on EDAC_MM_EDAC && PCI + depends on EDAC_MM_EDAC && PCI && X86_32 help Support for error detection and correction on the Intel 82860 chipset. config EDAC_R82600 tristate "Radisys 82600 embedded chipset" - depends on EDAC_MM_EDAC + depends on EDAC_MM_EDAC && PCI && X86_32 help Support for error detection and correction on the Radisys 82600 embedded chipset. diff --git a/drivers/edac/amd76x_edac.c b/drivers/edac/amd76x_edac.c index 2fcc8120b53..53423ad6d4a 100644 --- a/drivers/edac/amd76x_edac.c +++ b/drivers/edac/amd76x_edac.c @@ -12,25 +12,26 @@ * */ - #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> - #include <linux/pci.h> #include <linux/pci_ids.h> - #include <linux/slab.h> - #include "edac_mc.h" +#define amd76x_printk(level, fmt, arg...) \ + edac_printk(level, "amd76x", fmt, ##arg) + +#define amd76x_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "amd76x", fmt, ##arg) #define AMD76X_NR_CSROWS 8 #define AMD76X_NR_CHANS 1 #define AMD76X_NR_DIMMS 4 - /* AMD 76x register addresses - device 0 function 0 - PCI bridge */ + #define AMD76X_ECC_MODE_STATUS 0x48 /* Mode and status of ECC (32b) * * 31:16 reserved @@ -42,6 +43,7 @@ * 7:4 UE cs row * 3:0 CE cs row */ + #define AMD76X_DRAM_MODE_STATUS 0x58 /* DRAM Mode and status (32b) * * 31:26 clock disable 5 - 0 @@ -56,6 +58,7 @@ * 15:8 reserved * 7:0 x4 mode enable 7 - 0 */ + #define AMD76X_MEM_BASE_ADDR 0xC0 /* Memory base address (8 x 32b) * * 31:23 chip-select base @@ -66,29 +69,28 @@ * 0 chip-select enable */ - struct amd76x_error_info { u32 ecc_mode_status; }; - enum amd76x_chips { AMD761 = 0, AMD762 }; - struct amd76x_dev_info { const char *ctl_name; }; - static const struct amd76x_dev_info amd76x_devs[] = { - [AMD761] = {.ctl_name = "AMD761"}, - [AMD762] = {.ctl_name = "AMD762"}, + [AMD761] = { + .ctl_name = "AMD761" + }, + [AMD762] = { + .ctl_name = "AMD762" + }, }; - /** * amd76x_get_error_info - fetch error information * @mci: Memory controller @@ -97,23 +99,21 @@ static const struct amd76x_dev_info amd76x_devs[] = { * Fetch and store the AMD76x ECC status. Clear pending status * on the chip so that further errors will be reported */ - -static void amd76x_get_error_info (struct mem_ctl_info *mci, - struct amd76x_error_info *info) +static void amd76x_get_error_info(struct mem_ctl_info *mci, + struct amd76x_error_info *info) { pci_read_config_dword(mci->pdev, AMD76X_ECC_MODE_STATUS, &info->ecc_mode_status); if (info->ecc_mode_status & BIT(8)) pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS, - (u32) BIT(8), (u32) BIT(8)); + (u32) BIT(8), (u32) BIT(8)); if (info->ecc_mode_status & BIT(9)) pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS, - (u32) BIT(9), (u32) BIT(9)); + (u32) BIT(9), (u32) BIT(9)); } - /** * amd76x_process_error_info - Error check * @mci: Memory controller @@ -124,8 +124,7 @@ static void amd76x_get_error_info (struct mem_ctl_info *mci, * A return of 1 indicates an error. Also if handle_errors is true * then attempt to handle and clean up after the error */ - -static int amd76x_process_error_info (struct mem_ctl_info *mci, +static int amd76x_process_error_info(struct mem_ctl_info *mci, struct amd76x_error_info *info, int handle_errors) { int error_found; @@ -141,9 +140,8 @@ static int amd76x_process_error_info (struct mem_ctl_info *mci, if (handle_errors) { row = (info->ecc_mode_status >> 4) & 0xf; - edac_mc_handle_ue(mci, - mci->csrows[row].first_page, 0, row, - mci->ctl_name); + edac_mc_handle_ue(mci, mci->csrows[row].first_page, 0, + row, mci->ctl_name); } } @@ -155,11 +153,11 @@ static int amd76x_process_error_info (struct mem_ctl_info *mci, if (handle_errors) { row = info->ecc_mode_status & 0xf; - edac_mc_handle_ce(mci, - mci->csrows[row].first_page, 0, 0, row, 0, - mci->ctl_name); + edac_mc_handle_ce(mci, mci->csrows[row].first_page, 0, + 0, row, 0, mci->ctl_name); } } + return error_found; } @@ -170,16 +168,14 @@ static int amd76x_process_error_info (struct mem_ctl_info *mci, * Called by the poll handlers this function reads the status * from the controller and checks for errors. */ - static void amd76x_check(struct mem_ctl_info *mci) { struct amd76x_error_info info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); amd76x_get_error_info(mci, &info); amd76x_process_error_info(mci, &info, 1); } - /** * amd76x_probe1 - Perform set up for detected device * @pdev; PCI device detected @@ -189,7 +185,6 @@ static void amd76x_check(struct mem_ctl_info *mci) * controller status reporting. We configure and set up the * memory controller reporting and claim the device. */ - static int amd76x_probe1(struct pci_dev *pdev, int dev_idx) { int rc = -ENODEV; @@ -203,12 +198,11 @@ static int amd76x_probe1(struct pci_dev *pdev, int dev_idx) }; u32 ems; u32 ems_mode; + struct amd76x_error_info discard; - debugf0("MC: " __FILE__ ": %s()\n", __func__); - + debugf0("%s()\n", __func__); pci_read_config_dword(pdev, AMD76X_ECC_MODE_STATUS, &ems); ems_mode = (ems >> 10) & 0x3; - mci = edac_mc_alloc(0, AMD76X_NR_CSROWS, AMD76X_NR_CHANS); if (mci == NULL) { @@ -216,16 +210,13 @@ static int amd76x_probe1(struct pci_dev *pdev, int dev_idx) goto fail; } - debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci); - - mci->pdev = pci_dev_get(pdev); + debugf0("%s(): mci = %p\n", __func__, mci); + mci->pdev = pdev; mci->mtype_cap = MEM_FLAG_RDDR; - mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED; mci->edac_cap = ems_mode ? - (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_NONE; - - mci->mod_name = BS_MOD_STR; + (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_NONE; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.4.2.5 $"; mci->ctl_name = amd76x_devs[dev_idx].ctl_name; mci->edac_check = amd76x_check; @@ -240,18 +231,15 @@ static int amd76x_probe1(struct pci_dev *pdev, int dev_idx) /* find the DRAM Chip Select Base address and mask */ pci_read_config_dword(mci->pdev, - AMD76X_MEM_BASE_ADDR + (index * 4), - &mba); + AMD76X_MEM_BASE_ADDR + (index * 4), &mba); if (!(mba & BIT(0))) continue; mba_base = mba & 0xff800000UL; mba_mask = ((mba & 0xff80) << 16) | 0x7fffffUL; - pci_read_config_dword(mci->pdev, AMD76X_DRAM_MODE_STATUS, - &dms); - + &dms); csrow->first_page = mba_base >> PAGE_SHIFT; csrow->nr_pages = (mba_mask + 1) >> PAGE_SHIFT; csrow->last_page = csrow->first_page + csrow->nr_pages - 1; @@ -262,40 +250,33 @@ static int amd76x_probe1(struct pci_dev *pdev, int dev_idx) csrow->edac_mode = ems_modes[ems_mode]; } - /* clear counters */ - pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS, (u32) (0x3 << 8), - (u32) (0x3 << 8)); + amd76x_get_error_info(mci, &discard); /* clear counters */ if (edac_mc_add_mc(mci)) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", __func__); + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); goto fail; } /* get this far and it's successful */ - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); return 0; fail: - if (mci) { - if(mci->pdev) - pci_dev_put(mci->pdev); + if (mci != NULL) edac_mc_free(mci); - } return rc; } /* returns count (>= 0), or negative on error */ static int __devinit amd76x_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); /* don't need to call pci_device_enable() */ return amd76x_probe1(pdev, ent->driver_data); } - /** * amd76x_remove_one - driver shutdown * @pdev: PCI device being handed back @@ -304,35 +285,36 @@ static int __devinit amd76x_init_one(struct pci_dev *pdev, * structure for the device then delete the mci and free the * resources. */ - static void __devexit amd76x_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; - debugf0(__FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); - if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL) + if ((mci = edac_mc_del_mc(pdev)) == NULL) return; - if (edac_mc_del_mc(mci)) - return; - pci_dev_put(mci->pdev); + edac_mc_free(mci); } - static const struct pci_device_id amd76x_pci_tbl[] __devinitdata = { - {PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - AMD762}, - {PCI_VEND_DEV(AMD, FE_GATE_700E), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - AMD761}, - {0,} /* 0 terminated list. */ + { + PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + AMD762 + }, + { + PCI_VEND_DEV(AMD, FE_GATE_700E), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + AMD761 + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, amd76x_pci_tbl); - static struct pci_driver amd76x_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = amd76x_init_one, .remove = __devexit_p(amd76x_remove_one), .id_table = amd76x_pci_tbl, diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c index c454ded2b06..66572c5323a 100644 --- a/drivers/edac/e752x_edac.c +++ b/drivers/edac/e752x_edac.c @@ -17,18 +17,19 @@ * */ - #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> - #include <linux/pci.h> #include <linux/pci_ids.h> - #include <linux/slab.h> - #include "edac_mc.h" +#define e752x_printk(level, fmt, arg...) \ + edac_printk(level, "e752x", fmt, ##arg) + +#define e752x_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "e752x", fmt, ##arg) #ifndef PCI_DEVICE_ID_INTEL_7520_0 #define PCI_DEVICE_ID_INTEL_7520_0 0x3590 @@ -56,7 +57,6 @@ #define E752X_NR_CSROWS 8 /* number of csrows */ - /* E752X register addresses - device 0 function 0 */ #define E752X_DRB 0x60 /* DRAM row boundary register (8b) */ #define E752X_DRA 0x70 /* DRAM row attribute register (8b) */ @@ -156,7 +156,6 @@ enum e752x_chips { E7320 = 2 }; - struct e752x_pvt { struct pci_dev *bridge_ck; struct pci_dev *dev_d0f0; @@ -170,9 +169,9 @@ struct e752x_pvt { const struct e752x_dev_info *dev_info; }; - struct e752x_dev_info { u16 err_dev; + u16 ctl_dev; const char *ctl_name; }; @@ -198,38 +197,47 @@ struct e752x_error_info { static const struct e752x_dev_info e752x_devs[] = { [E7520] = { - .err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR, - .ctl_name = "E7520"}, + .err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR, + .ctl_dev = PCI_DEVICE_ID_INTEL_7520_0, + .ctl_name = "E7520" + }, [E7525] = { - .err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR, - .ctl_name = "E7525"}, + .err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR, + .ctl_dev = PCI_DEVICE_ID_INTEL_7525_0, + .ctl_name = "E7525" + }, [E7320] = { - .err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR, - .ctl_name = "E7320"}, + .err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR, + .ctl_dev = PCI_DEVICE_ID_INTEL_7320_0, + .ctl_name = "E7320" + }, }; - static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci, - unsigned long page) + unsigned long page) { u32 remap; struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); if (page < pvt->tolm) return page; + if ((page >= 0x100000) && (page < pvt->remapbase)) return page; + remap = (page - pvt->tolm) + pvt->remapbase; + if (remap < pvt->remaplimit) return remap; - printk(KERN_ERR "Invalid page %lx - out of range\n", page); + + e752x_printk(KERN_ERR, "Invalid page %lx - out of range\n", page); return pvt->tolm - 1; } static void do_process_ce(struct mem_ctl_info *mci, u16 error_one, - u32 sec1_add, u16 sec1_syndrome) + u32 sec1_add, u16 sec1_syndrome) { u32 page; int row; @@ -237,7 +245,7 @@ static void do_process_ce(struct mem_ctl_info *mci, u16 error_one, int i; struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); /* convert the addr to 4k page */ page = sec1_add >> (PAGE_SHIFT - 4); @@ -246,36 +254,37 @@ static void do_process_ce(struct mem_ctl_info *mci, u16 error_one, if (pvt->mc_symmetric) { /* chip select are bits 14 & 13 */ row = ((page >> 1) & 3); - printk(KERN_WARNING - "Test row %d Table %d %d %d %d %d %d %d %d\n", - row, pvt->map[0], pvt->map[1], pvt->map[2], - pvt->map[3], pvt->map[4], pvt->map[5], - pvt->map[6], pvt->map[7]); + e752x_printk(KERN_WARNING, + "Test row %d Table %d %d %d %d %d %d %d %d\n", row, + pvt->map[0], pvt->map[1], pvt->map[2], pvt->map[3], + pvt->map[4], pvt->map[5], pvt->map[6], pvt->map[7]); /* test for channel remapping */ for (i = 0; i < 8; i++) { if (pvt->map[i] == row) break; } - printk(KERN_WARNING "Test computed row %d\n", i); + + e752x_printk(KERN_WARNING, "Test computed row %d\n", i); + if (i < 8) row = i; else - printk(KERN_WARNING - "MC%d: row %d not found in remap table\n", - mci->mc_idx, row); + e752x_mc_printk(mci, KERN_WARNING, + "row %d not found in remap table\n", row); } else row = edac_mc_find_csrow_by_page(mci, page); + /* 0 = channel A, 1 = channel B */ channel = !(error_one & 1); if (!pvt->map_type) row = 7 - row; + edac_mc_handle_ce(mci, page, 0, sec1_syndrome, row, channel, - "e752x CE"); + "e752x CE"); } - static inline void process_ce(struct mem_ctl_info *mci, u16 error_one, u32 sec1_add, u16 sec1_syndrome, int *error_found, int handle_error) @@ -286,36 +295,42 @@ static inline void process_ce(struct mem_ctl_info *mci, u16 error_one, do_process_ce(mci, error_one, sec1_add, sec1_syndrome); } -static void do_process_ue(struct mem_ctl_info *mci, u16 error_one, u32 ded_add, - u32 scrb_add) +static void do_process_ue(struct mem_ctl_info *mci, u16 error_one, + u32 ded_add, u32 scrb_add) { u32 error_2b, block_page; int row; struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); if (error_one & 0x0202) { error_2b = ded_add; + /* convert to 4k address */ block_page = error_2b >> (PAGE_SHIFT - 4); + row = pvt->mc_symmetric ? - /* chip select are bits 14 & 13 */ - ((block_page >> 1) & 3) : - edac_mc_find_csrow_by_page(mci, block_page); + /* chip select are bits 14 & 13 */ + ((block_page >> 1) & 3) : + edac_mc_find_csrow_by_page(mci, block_page); + edac_mc_handle_ue(mci, block_page, 0, row, - "e752x UE from Read"); + "e752x UE from Read"); } if (error_one & 0x0404) { error_2b = scrb_add; + /* convert to 4k address */ block_page = error_2b >> (PAGE_SHIFT - 4); + row = pvt->mc_symmetric ? - /* chip select are bits 14 & 13 */ - ((block_page >> 1) & 3) : - edac_mc_find_csrow_by_page(mci, block_page); + /* chip select are bits 14 & 13 */ + ((block_page >> 1) & 3) : + edac_mc_find_csrow_by_page(mci, block_page); + edac_mc_handle_ue(mci, block_page, 0, row, - "e752x UE from Scruber"); + "e752x UE from Scruber"); } } @@ -336,7 +351,7 @@ static inline void process_ue_no_info_wr(struct mem_ctl_info *mci, if (!handle_error) return; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); edac_mc_handle_ue_no_info(mci, "e752x UE log memory write"); } @@ -348,13 +363,13 @@ static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error, struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info; error_1b = retry_add; - page = error_1b >> (PAGE_SHIFT - 4); /* convert the addr to 4k page */ + page = error_1b >> (PAGE_SHIFT - 4); /* convert the addr to 4k page */ row = pvt->mc_symmetric ? - ((page >> 1) & 3) : /* chip select are bits 14 & 13 */ - edac_mc_find_csrow_by_page(mci, page); - printk(KERN_WARNING - "MC%d: CE page 0x%lx, row %d : Memory read retry\n", - mci->mc_idx, (long unsigned int) page, row); + ((page >> 1) & 3) : /* chip select are bits 14 & 13 */ + edac_mc_find_csrow_by_page(mci, page); + e752x_mc_printk(mci, KERN_WARNING, + "CE page 0x%lx, row %d : Memory read retry\n", + (long unsigned int) page, row); } static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error, @@ -372,8 +387,7 @@ static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error, *error_found = 1; if (handle_error) - printk(KERN_WARNING "MC%d: Memory threshold CE\n", - mci->mc_idx); + e752x_mc_printk(mci, KERN_WARNING, "Memory threshold CE\n"); } static char *global_message[11] = { @@ -391,8 +405,8 @@ static void do_global_error(int fatal, u32 errors) for (i = 0; i < 11; i++) { if (errors & (1 << i)) - printk(KERN_WARNING "%sError %s\n", - fatal_message[fatal], global_message[i]); + e752x_printk(KERN_WARNING, "%sError %s\n", + fatal_message[fatal], global_message[i]); } } @@ -418,8 +432,8 @@ static void do_hub_error(int fatal, u8 errors) for (i = 0; i < 7; i++) { if (errors & (1 << i)) - printk(KERN_WARNING "%sError %s\n", - fatal_message[fatal], hub_message[i]); + e752x_printk(KERN_WARNING, "%sError %s\n", + fatal_message[fatal], hub_message[i]); } } @@ -445,8 +459,8 @@ static void do_membuf_error(u8 errors) for (i = 0; i < 4; i++) { if (errors & (1 << i)) - printk(KERN_WARNING "Non-Fatal Error %s\n", - membuf_message[i]); + e752x_printk(KERN_WARNING, "Non-Fatal Error %s\n", + membuf_message[i]); } } @@ -458,8 +472,7 @@ static inline void membuf_error(u8 errors, int *error_found, int handle_error) do_membuf_error(errors); } -#if 0 -char *sysbus_message[10] = { +static char *sysbus_message[10] = { "Addr or Request Parity", "Data Strobe Glitch", "Addr Strobe Glitch", @@ -470,7 +483,6 @@ char *sysbus_message[10] = { "Memory Parity", "IO Subsystem Parity" }; -#endif /* 0 */ static void do_sysbus_error(int fatal, u32 errors) { @@ -478,8 +490,8 @@ static void do_sysbus_error(int fatal, u32 errors) for (i = 0; i < 10; i++) { if (errors & (1 << i)) - printk(KERN_WARNING "%sError System Bus %s\n", - fatal_message[fatal], global_message[i]); + e752x_printk(KERN_WARNING, "%sError System Bus %s\n", + fatal_message[fatal], sysbus_message[i]); } } @@ -492,33 +504,42 @@ static inline void sysbus_error(int fatal, u32 errors, int *error_found, do_sysbus_error(fatal, errors); } -static void e752x_check_hub_interface (struct e752x_error_info *info, +static void e752x_check_hub_interface(struct e752x_error_info *info, int *error_found, int handle_error) { u8 stat8; //pci_read_config_byte(dev,E752X_HI_FERR,&stat8); + stat8 = info->hi_ferr; + if(stat8 & 0x7f) { /* Error, so process */ stat8 &= 0x7f; + if(stat8 & 0x2b) hub_error(1, stat8 & 0x2b, error_found, handle_error); + if(stat8 & 0x54) hub_error(0, stat8 & 0x54, error_found, handle_error); } + //pci_read_config_byte(dev,E752X_HI_NERR,&stat8); + stat8 = info->hi_nerr; + if(stat8 & 0x7f) { /* Error, so process */ stat8 &= 0x7f; + if (stat8 & 0x2b) hub_error(1, stat8 & 0x2b, error_found, handle_error); + if(stat8 & 0x54) hub_error(0, stat8 & 0x54, error_found, handle_error); } } -static void e752x_check_sysbus (struct e752x_error_info *info, int *error_found, - int handle_error) +static void e752x_check_sysbus(struct e752x_error_info *info, + int *error_found, int handle_error) { u32 stat32, error32; @@ -530,27 +551,34 @@ static void e752x_check_sysbus (struct e752x_error_info *info, int *error_found, error32 = (stat32 >> 16) & 0x3ff; stat32 = stat32 & 0x3ff; + if(stat32 & 0x083) sysbus_error(1, stat32 & 0x083, error_found, handle_error); + if(stat32 & 0x37c) sysbus_error(0, stat32 & 0x37c, error_found, handle_error); + if(error32 & 0x083) sysbus_error(1, error32 & 0x083, error_found, handle_error); + if(error32 & 0x37c) sysbus_error(0, error32 & 0x37c, error_found, handle_error); } -static void e752x_check_membuf (struct e752x_error_info *info, int *error_found, - int handle_error) +static void e752x_check_membuf (struct e752x_error_info *info, + int *error_found, int handle_error) { u8 stat8; stat8 = info->buf_ferr; + if (stat8 & 0x0f) { /* Error, so process */ stat8 &= 0x0f; membuf_error(stat8, error_found, handle_error); } + stat8 = info->buf_nerr; + if (stat8 & 0x0f) { /* Error, so process */ stat8 &= 0x0f; membuf_error(stat8, error_found, handle_error); @@ -558,7 +586,8 @@ static void e752x_check_membuf (struct e752x_error_info *info, int *error_found, } static void e752x_check_dram (struct mem_ctl_info *mci, - struct e752x_error_info *info, int *error_found, int handle_error) + struct e752x_error_info *info, int *error_found, + int handle_error) { u16 error_one, error_next; @@ -608,7 +637,7 @@ static void e752x_check_dram (struct mem_ctl_info *mci, } static void e752x_get_error_info (struct mem_ctl_info *mci, - struct e752x_error_info *info) + struct e752x_error_info *info) { struct pci_dev *dev; struct e752x_pvt *pvt; @@ -616,7 +645,6 @@ static void e752x_get_error_info (struct mem_ctl_info *mci, memset(info, 0, sizeof(*info)); pvt = (struct e752x_pvt *) mci->pvt_info; dev = pvt->dev_d0f1; - pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global); if (info->ferr_global) { @@ -727,7 +755,8 @@ static int e752x_process_error_info (struct mem_ctl_info *mci, static void e752x_check(struct mem_ctl_info *mci) { struct e752x_error_info info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + + debugf3("%s()\n", __func__); e752x_get_error_info(mci, &info); e752x_process_error_info(mci, &info, 1); } @@ -736,23 +765,21 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) { int rc = -ENODEV; int index; - u16 pci_data, stat; - u32 stat32; - u16 stat16; + u16 pci_data; u8 stat8; struct mem_ctl_info *mci = NULL; struct e752x_pvt *pvt = NULL; u16 ddrcsr; u32 drc; - int drc_chan; /* Number of channels 0=1chan,1=2chan */ - int drc_drbg; /* DRB granularity 0=64mb,1=128mb */ - int drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ + int drc_chan; /* Number of channels 0=1chan,1=2chan */ + int drc_drbg; /* DRB granularity 0=64mb, 1=128mb */ + int drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ u32 dra; unsigned long last_cumul_size; - struct pci_dev *pres_dev; struct pci_dev *dev = NULL; + struct e752x_error_info discard; - debugf0("MC: " __FILE__ ": %s(): mci\n", __func__); + debugf0("%s(): mci\n", __func__); debugf0("Starting Probe1\n"); /* enable device 0 function 1 */ @@ -776,34 +803,35 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) goto fail; } - debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__); - + debugf3("%s(): init mci\n", __func__); mci->mtype_cap = MEM_FLAG_RDDR; mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED; /* FIXME - what if different memory types are in different csrows? */ - mci->mod_name = BS_MOD_STR; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.5.2.11 $"; mci->pdev = pdev; - debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__); + debugf3("%s(): init pvt\n", __func__); pvt = (struct e752x_pvt *) mci->pvt_info; pvt->dev_info = &e752x_devs[dev_idx]; pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL, - pvt->dev_info->err_dev, - pvt->bridge_ck); + pvt->dev_info->err_dev, + pvt->bridge_ck); + if (pvt->bridge_ck == NULL) pvt->bridge_ck = pci_scan_single_device(pdev->bus, - PCI_DEVFN(0, 1)); + PCI_DEVFN(0, 1)); + if (pvt->bridge_ck == NULL) { - printk(KERN_ERR "MC: error reporting device not found:" - "vendor %x device 0x%x (broken BIOS?)\n", - PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev); + e752x_printk(KERN_ERR, "error reporting device not found:" + "vendor %x device 0x%x (broken BIOS?)\n", + PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev); goto fail; } - pvt->mc_symmetric = ((ddrcsr & 0x10) != 0); - debugf3("MC: " __FILE__ ": %s(): more mci init\n", __func__); + pvt->mc_symmetric = ((ddrcsr & 0x10) != 0); + debugf3("%s(): more mci init\n", __func__); mci->ctl_name = pvt->dev_info->ctl_name; mci->edac_check = e752x_check; mci->ctl_page_to_phys = ctl_page_to_phys; @@ -820,6 +848,7 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) { u8 value; u32 cumul_size; + /* mem_dev 0=x8, 1=x4 */ int mem_dev = (dra >> (index * 4 + 2)) & 0x3; struct csrow_info *csrow = &mci->csrows[index]; @@ -828,17 +857,18 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) pci_read_config_byte(mci->pdev, E752X_DRB + index, &value); /* convert a 128 or 64 MiB DRB to a page size. */ cumul_size = value << (25 + drc_drbg - PAGE_SHIFT); - debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n", - __func__, index, cumul_size); + debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, + cumul_size); + if (cumul_size == last_cumul_size) - continue; /* not populated */ + continue; /* not populated */ csrow->first_page = last_cumul_size; csrow->last_page = cumul_size - 1; csrow->nr_pages = cumul_size - last_cumul_size; last_cumul_size = cumul_size; - csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */ - csrow->mtype = MEM_RDDR; /* only one type supported */ + csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */ + csrow->mtype = MEM_RDDR; /* only one type supported */ csrow->dtype = mem_dev ? DEV_X4 : DEV_X8; /* @@ -862,29 +892,32 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) u8 value; u8 last = 0; u8 row = 0; - for (index = 0; index < 8; index += 2) { + for (index = 0; index < 8; index += 2) { pci_read_config_byte(mci->pdev, E752X_DRB + index, - &value); + &value); + /* test if there is a dimm in this slot */ if (value == last) { /* no dimm in the slot, so flag it as empty */ pvt->map[index] = 0xff; pvt->map[index + 1] = 0xff; - } else { /* there is a dimm in the slot */ + } else { /* there is a dimm in the slot */ pvt->map[index] = row; row++; last = value; /* test the next value to see if the dimm is double sided */ pci_read_config_byte(mci->pdev, - E752X_DRB + index + 1, - &value); + E752X_DRB + index + 1, + &value); pvt->map[index + 1] = (value == last) ? - 0xff : /* the dimm is single sided, - so flag as empty */ - row; /* this is a double sided dimm - to save the next row # */ + 0xff : /* the dimm is single sided, + * so flag as empty + */ + row; /* this is a double sided dimm + * to save the next row # + */ row++; last = value; } @@ -896,9 +929,8 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) pvt->map_type = ((stat8 & 0x0f) > ((stat8 >> 4) & 0x0f)); mci->edac_cap |= EDAC_FLAG_NONE; + debugf3("%s(): tolm, remapbase, remaplimit\n", __func__); - debugf3("MC: " __FILE__ ": %s(): tolm, remapbase, remaplimit\n", - __func__); /* load the top of low memory, remap base, and remap limit vars */ pci_read_config_word(mci->pdev, E752X_TOLM, &pci_data); pvt->tolm = ((u32) pci_data) << 4; @@ -906,43 +938,18 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) pvt->remapbase = ((u32) pci_data) << 14; pci_read_config_word(mci->pdev, E752X_REMAPLIMIT, &pci_data); pvt->remaplimit = ((u32) pci_data) << 14; - printk("tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm, - pvt->remapbase, pvt->remaplimit); + e752x_printk(KERN_INFO, + "tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm, + pvt->remapbase, pvt->remaplimit); if (edac_mc_add_mc(mci)) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", - __func__); + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); goto fail; } - /* Walk through the PCI table and clear errors */ - switch (dev_idx) { - case E7520: - dev = pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_7520_0, NULL); - break; - case E7525: - dev = pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_7525_0, NULL); - break; - case E7320: - dev = pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_7320_0, NULL); - break; - } - - + dev = pci_get_device(PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].ctl_dev, + NULL); pvt->dev_d0f0 = dev; - for (pres_dev = dev; - ((struct pci_dev *) pres_dev->global_list.next != dev); - pres_dev = (struct pci_dev *) pres_dev->global_list.next) { - pci_read_config_dword(pres_dev, PCI_COMMAND, &stat32); - stat = (u16) (stat32 >> 16); - /* clear any error bits */ - if (stat32 & ((1 << 6) + (1 << 8))) - pci_write_config_word(pres_dev, PCI_STATUS, stat); - } /* find the error reporting device and clear errors */ dev = pvt->dev_d0f1 = pci_dev_get(pvt->bridge_ck); /* Turn off error disable & SMI in case the BIOS turned it on */ @@ -954,67 +961,51 @@ static int e752x_probe1(struct pci_dev *pdev, int dev_idx) pci_write_config_byte(dev, E752X_BUF_SMICMD, 0x00); pci_write_config_byte(dev, E752X_DRAM_ERRMASK, 0x00); pci_write_config_byte(dev, E752X_DRAM_SMICMD, 0x00); - /* clear other MCH errors */ - pci_read_config_dword(dev, E752X_FERR_GLOBAL, &stat32); - pci_write_config_dword(dev, E752X_FERR_GLOBAL, stat32); - pci_read_config_dword(dev, E752X_NERR_GLOBAL, &stat32); - pci_write_config_dword(dev, E752X_NERR_GLOBAL, stat32); - pci_read_config_byte(dev, E752X_HI_FERR, &stat8); - pci_write_config_byte(dev, E752X_HI_FERR, stat8); - pci_read_config_byte(dev, E752X_HI_NERR, &stat8); - pci_write_config_byte(dev, E752X_HI_NERR, stat8); - pci_read_config_dword(dev, E752X_SYSBUS_FERR, &stat32); - pci_write_config_dword(dev, E752X_SYSBUS_FERR, stat32); - pci_read_config_byte(dev, E752X_BUF_FERR, &stat8); - pci_write_config_byte(dev, E752X_BUF_FERR, stat8); - pci_read_config_byte(dev, E752X_BUF_NERR, &stat8); - pci_write_config_byte(dev, E752X_BUF_NERR, stat8); - pci_read_config_word(dev, E752X_DRAM_FERR, &stat16); - pci_write_config_word(dev, E752X_DRAM_FERR, stat16); - pci_read_config_word(dev, E752X_DRAM_NERR, &stat16); - pci_write_config_word(dev, E752X_DRAM_NERR, stat16); + + e752x_get_error_info(mci, &discard); /* clear other MCH errors */ /* get this far and it's successful */ - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); return 0; fail: if (mci) { if (pvt->dev_d0f0) pci_dev_put(pvt->dev_d0f0); + if (pvt->dev_d0f1) pci_dev_put(pvt->dev_d0f1); + if (pvt->bridge_ck) pci_dev_put(pvt->bridge_ck); + edac_mc_free(mci); } + return rc; } /* returns count (>= 0), or negative on error */ static int __devinit e752x_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); /* wake up and enable device */ if(pci_enable_device(pdev) < 0) return -EIO; + return e752x_probe1(pdev, ent->driver_data); } - static void __devexit e752x_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; struct e752x_pvt *pvt; - debugf0(__FILE__ ": %s()\n", __func__); - - if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL) - return; + debugf0("%s()\n", __func__); - if (edac_mc_del_mc(mci)) + if ((mci = edac_mc_del_mc(pdev)) == NULL) return; pvt = (struct e752x_pvt *) mci->pvt_info; @@ -1024,45 +1015,48 @@ static void __devexit e752x_remove_one(struct pci_dev *pdev) edac_mc_free(mci); } - static const struct pci_device_id e752x_pci_tbl[] __devinitdata = { - {PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7520}, - {PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7525}, - {PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7320}, - {0,} /* 0 terminated list. */ + { + PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7520 + }, + { + PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7525 + }, + { + PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7320 + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, e752x_pci_tbl); - static struct pci_driver e752x_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = e752x_init_one, .remove = __devexit_p(e752x_remove_one), .id_table = e752x_pci_tbl, }; - static int __init e752x_init(void) { int pci_rc; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); pci_rc = pci_register_driver(&e752x_driver); return (pci_rc < 0) ? pci_rc : 0; } - static void __exit e752x_exit(void) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); pci_unregister_driver(&e752x_driver); } - module_init(e752x_init); module_exit(e752x_exit); diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c index d5e320dfc66..a9518d3e4be 100644 --- a/drivers/edac/e7xxx_edac.c +++ b/drivers/edac/e7xxx_edac.c @@ -11,9 +11,9 @@ * http://www.anime.net/~goemon/linux-ecc/ * * Contributors: - * Eric Biederman (Linux Networx) - * Tom Zimmerman (Linux Networx) - * Jim Garlick (Lawrence Livermore National Labs) + * Eric Biederman (Linux Networx) + * Tom Zimmerman (Linux Networx) + * Jim Garlick (Lawrence Livermore National Labs) * Dave Peterson (Lawrence Livermore National Labs) * That One Guy (Some other place) * Wang Zhenyu (intel.com) @@ -22,7 +22,6 @@ * */ - #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> @@ -31,6 +30,11 @@ #include <linux/slab.h> #include "edac_mc.h" +#define e7xxx_printk(level, fmt, arg...) \ + edac_printk(level, "e7xxx", fmt, ##arg) + +#define e7xxx_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "e7xxx", fmt, ##arg) #ifndef PCI_DEVICE_ID_INTEL_7205_0 #define PCI_DEVICE_ID_INTEL_7205_0 0x255d @@ -64,11 +68,9 @@ #define PCI_DEVICE_ID_INTEL_7505_1_ERR 0x2551 #endif /* PCI_DEVICE_ID_INTEL_7505_1_ERR */ - #define E7XXX_NR_CSROWS 8 /* number of csrows */ #define E7XXX_NR_DIMMS 8 /* FIXME - is this correct? */ - /* E7XXX register addresses - device 0 function 0 */ #define E7XXX_DRB 0x60 /* DRAM row boundary register (8b) */ #define E7XXX_DRA 0x70 /* DRAM row attribute register (8b) */ @@ -118,7 +120,6 @@ enum e7xxx_chips { E7205, }; - struct e7xxx_pvt { struct pci_dev *bridge_ck; u32 tolm; @@ -127,13 +128,11 @@ struct e7xxx_pvt { const struct e7xxx_dev_info *dev_info; }; - struct e7xxx_dev_info { u16 err_dev; const char *ctl_name; }; - struct e7xxx_error_info { u8 dram_ferr; u8 dram_nerr; @@ -144,108 +143,110 @@ struct e7xxx_error_info { static const struct e7xxx_dev_info e7xxx_devs[] = { [E7500] = { - .err_dev = PCI_DEVICE_ID_INTEL_7500_1_ERR, - .ctl_name = "E7500"}, + .err_dev = PCI_DEVICE_ID_INTEL_7500_1_ERR, + .ctl_name = "E7500" + }, [E7501] = { - .err_dev = PCI_DEVICE_ID_INTEL_7501_1_ERR, - .ctl_name = "E7501"}, + .err_dev = PCI_DEVICE_ID_INTEL_7501_1_ERR, + .ctl_name = "E7501" + }, [E7505] = { - .err_dev = PCI_DEVICE_ID_INTEL_7505_1_ERR, - .ctl_name = "E7505"}, + .err_dev = PCI_DEVICE_ID_INTEL_7505_1_ERR, + .ctl_name = "E7505" + }, [E7205] = { - .err_dev = PCI_DEVICE_ID_INTEL_7205_1_ERR, - .ctl_name = "E7205"}, + .err_dev = PCI_DEVICE_ID_INTEL_7205_1_ERR, + .ctl_name = "E7205" + }, }; - /* FIXME - is this valid for both SECDED and S4ECD4ED? */ static inline int e7xxx_find_channel(u16 syndrome) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); if ((syndrome & 0xff00) == 0) return 0; + if ((syndrome & 0x00ff) == 0) return 1; + if ((syndrome & 0xf000) == 0 || (syndrome & 0x0f00) == 0) return 0; + return 1; } - -static unsigned long -ctl_page_to_phys(struct mem_ctl_info *mci, unsigned long page) +static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci, + unsigned long page) { u32 remap; struct e7xxx_pvt *pvt = (struct e7xxx_pvt *) mci->pvt_info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); if ((page < pvt->tolm) || - ((page >= 0x100000) && (page < pvt->remapbase))) + ((page >= 0x100000) && (page < pvt->remapbase))) return page; + remap = (page - pvt->tolm) + pvt->remapbase; + if (remap < pvt->remaplimit) return remap; - printk(KERN_ERR "Invalid page %lx - out of range\n", page); + + e7xxx_printk(KERN_ERR, "Invalid page %lx - out of range\n", page); return pvt->tolm - 1; } - -static void process_ce(struct mem_ctl_info *mci, struct e7xxx_error_info *info) +static void process_ce(struct mem_ctl_info *mci, + struct e7xxx_error_info *info) { u32 error_1b, page; u16 syndrome; int row; int channel; - debugf3("MC: " __FILE__ ": %s()\n", __func__); - + debugf3("%s()\n", __func__); /* read the error address */ error_1b = info->dram_celog_add; /* FIXME - should use PAGE_SHIFT */ - page = error_1b >> 6; /* convert the address to 4k page */ + page = error_1b >> 6; /* convert the address to 4k page */ /* read the syndrome */ syndrome = info->dram_celog_syndrome; /* FIXME - check for -1 */ row = edac_mc_find_csrow_by_page(mci, page); /* convert syndrome to channel */ channel = e7xxx_find_channel(syndrome); - edac_mc_handle_ce(mci, page, 0, syndrome, row, channel, - "e7xxx CE"); + edac_mc_handle_ce(mci, page, 0, syndrome, row, channel, "e7xxx CE"); } - static void process_ce_no_info(struct mem_ctl_info *mci) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); edac_mc_handle_ce_no_info(mci, "e7xxx CE log register overflow"); } - -static void process_ue(struct mem_ctl_info *mci, struct e7xxx_error_info *info) +static void process_ue(struct mem_ctl_info *mci, + struct e7xxx_error_info *info) { u32 error_2b, block_page; int row; - debugf3("MC: " __FILE__ ": %s()\n", __func__); - + debugf3("%s()\n", __func__); /* read the error address */ error_2b = info->dram_uelog_add; /* FIXME - should use PAGE_SHIFT */ - block_page = error_2b >> 6; /* convert to 4k address */ + block_page = error_2b >> 6; /* convert to 4k address */ row = edac_mc_find_csrow_by_page(mci, block_page); edac_mc_handle_ue(mci, block_page, 0, row, "e7xxx UE"); } - static void process_ue_no_info(struct mem_ctl_info *mci) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); edac_mc_handle_ue_no_info(mci, "e7xxx UE log register overflow"); } - static void e7xxx_get_error_info (struct mem_ctl_info *mci, struct e7xxx_error_info *info) { @@ -253,31 +254,29 @@ static void e7xxx_get_error_info (struct mem_ctl_info *mci, pvt = (struct e7xxx_pvt *) mci->pvt_info; pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_FERR, - &info->dram_ferr); + &info->dram_ferr); pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_NERR, - &info->dram_nerr); + &info->dram_nerr); if ((info->dram_ferr & 1) || (info->dram_nerr & 1)) { pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_CELOG_ADD, - &info->dram_celog_add); + &info->dram_celog_add); pci_read_config_word(pvt->bridge_ck, - E7XXX_DRAM_CELOG_SYNDROME, &info->dram_celog_syndrome); + E7XXX_DRAM_CELOG_SYNDROME, + &info->dram_celog_syndrome); } if ((info->dram_ferr & 2) || (info->dram_nerr & 2)) pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_UELOG_ADD, - &info->dram_uelog_add); + &info->dram_uelog_add); if (info->dram_ferr & 3) - pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03, - 0x03); + pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03, 0x03); if (info->dram_nerr & 3) - pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03, - 0x03); + pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03, 0x03); } - static int e7xxx_process_error_info (struct mem_ctl_info *mci, struct e7xxx_error_info *info, int handle_errors) { @@ -325,17 +324,15 @@ static int e7xxx_process_error_info (struct mem_ctl_info *mci, return error_found; } - static void e7xxx_check(struct mem_ctl_info *mci) { struct e7xxx_error_info info; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); e7xxx_get_error_info(mci, &info); e7xxx_process_error_info(mci, &info, 1); } - static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) { int rc = -ENODEV; @@ -349,19 +346,20 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) int drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ u32 dra; unsigned long last_cumul_size; + struct e7xxx_error_info discard; - - debugf0("MC: " __FILE__ ": %s(): mci\n", __func__); + debugf0("%s(): mci\n", __func__); /* need to find out the number of channels */ pci_read_config_dword(pdev, E7XXX_DRC, &drc); + /* only e7501 can be single channel */ if (dev_idx == E7501) { drc_chan = ((drc >> 22) & 0x1); drc_drbg = (drc >> 18) & 0x3; } - drc_ddim = (drc >> 20) & 0x3; + drc_ddim = (drc >> 20) & 0x3; mci = edac_mc_alloc(sizeof(*pvt), E7XXX_NR_CSROWS, drc_chan + 1); if (mci == NULL) { @@ -369,33 +367,31 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) goto fail; } - debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__); - + debugf3("%s(): init mci\n", __func__); mci->mtype_cap = MEM_FLAG_RDDR; - mci->edac_ctl_cap = - EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED; + mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED | + EDAC_FLAG_S4ECD4ED; /* FIXME - what if different memory types are in different csrows? */ - mci->mod_name = BS_MOD_STR; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.5.2.9 $"; mci->pdev = pdev; - debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__); + debugf3("%s(): init pvt\n", __func__); pvt = (struct e7xxx_pvt *) mci->pvt_info; pvt->dev_info = &e7xxx_devs[dev_idx]; pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL, - pvt->dev_info->err_dev, - pvt->bridge_ck); + pvt->dev_info->err_dev, + pvt->bridge_ck); + if (!pvt->bridge_ck) { - printk(KERN_ERR - "MC: error reporting device not found:" - "vendor %x device 0x%x (broken BIOS?)\n", - PCI_VENDOR_ID_INTEL, e7xxx_devs[dev_idx].err_dev); + e7xxx_printk(KERN_ERR, "error reporting device not found:" + "vendor %x device 0x%x (broken BIOS?)\n", + PCI_VENDOR_ID_INTEL, e7xxx_devs[dev_idx].err_dev); goto fail; } - debugf3("MC: " __FILE__ ": %s(): more mci init\n", __func__); + debugf3("%s(): more mci init\n", __func__); mci->ctl_name = pvt->dev_info->ctl_name; - mci->edac_check = e7xxx_check; mci->ctl_page_to_phys = ctl_page_to_phys; @@ -418,17 +414,18 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) pci_read_config_byte(mci->pdev, E7XXX_DRB + index, &value); /* convert a 64 or 32 MiB DRB to a page size. */ cumul_size = value << (25 + drc_drbg - PAGE_SHIFT); - debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n", - __func__, index, cumul_size); + debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, + cumul_size); + if (cumul_size == last_cumul_size) - continue; /* not populated */ + continue; /* not populated */ csrow->first_page = last_cumul_size; csrow->last_page = cumul_size - 1; csrow->nr_pages = cumul_size - last_cumul_size; last_cumul_size = cumul_size; - csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */ - csrow->mtype = MEM_RDDR; /* only one type supported */ + csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */ + csrow->mtype = MEM_RDDR; /* only one type supported */ csrow->dtype = mem_dev ? DEV_X4 : DEV_X8; /* @@ -449,8 +446,7 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) mci->edac_cap |= EDAC_FLAG_NONE; - debugf3("MC: " __FILE__ ": %s(): tolm, remapbase, remaplimit\n", - __func__); + debugf3("%s(): tolm, remapbase, remaplimit\n", __func__); /* load the top of low memory, remap base, and remap limit vars */ pci_read_config_word(mci->pdev, E7XXX_TOLM, &pci_data); pvt->tolm = ((u32) pci_data) << 4; @@ -458,22 +454,20 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) pvt->remapbase = ((u32) pci_data) << 14; pci_read_config_word(mci->pdev, E7XXX_REMAPLIMIT, &pci_data); pvt->remaplimit = ((u32) pci_data) << 14; - printk("tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm, - pvt->remapbase, pvt->remaplimit); + e7xxx_printk(KERN_INFO, + "tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm, + pvt->remapbase, pvt->remaplimit); /* clear any pending errors, or initial state bits */ - pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03, 0x03); - pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03, 0x03); + e7xxx_get_error_info(mci, &discard); if (edac_mc_add_mc(mci) != 0) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", - __func__); + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); goto fail; } /* get this far and it's successful */ - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); return 0; fail: @@ -487,62 +481,67 @@ fail: } /* returns count (>= 0), or negative on error */ -static int __devinit -e7xxx_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) +static int __devinit e7xxx_init_one(struct pci_dev *pdev, + const struct pci_device_id *ent) { - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); /* wake up and enable device */ return pci_enable_device(pdev) ? - -EIO : e7xxx_probe1(pdev, ent->driver_data); + -EIO : e7xxx_probe1(pdev, ent->driver_data); } - static void __devexit e7xxx_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; struct e7xxx_pvt *pvt; - debugf0(__FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); - if (((mci = edac_mc_find_mci_by_pdev(pdev)) != 0) && - edac_mc_del_mc(mci)) { - pvt = (struct e7xxx_pvt *) mci->pvt_info; - pci_dev_put(pvt->bridge_ck); - edac_mc_free(mci); - } -} + if ((mci = edac_mc_del_mc(pdev)) == NULL) + return; + pvt = (struct e7xxx_pvt *) mci->pvt_info; + pci_dev_put(pvt->bridge_ck); + edac_mc_free(mci); +} static const struct pci_device_id e7xxx_pci_tbl[] __devinitdata = { - {PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7205}, - {PCI_VEND_DEV(INTEL, 7500_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7500}, - {PCI_VEND_DEV(INTEL, 7501_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7501}, - {PCI_VEND_DEV(INTEL, 7505_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - E7505}, - {0,} /* 0 terminated list. */ + { + PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7205 + }, + { + PCI_VEND_DEV(INTEL, 7500_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7500 + }, + { + PCI_VEND_DEV(INTEL, 7501_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7501 + }, + { + PCI_VEND_DEV(INTEL, 7505_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + E7505 + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, e7xxx_pci_tbl); - static struct pci_driver e7xxx_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = e7xxx_init_one, .remove = __devexit_p(e7xxx_remove_one), .id_table = e7xxx_pci_tbl, }; - static int __init e7xxx_init(void) { return pci_register_driver(&e7xxx_driver); } - static void __exit e7xxx_exit(void) { pci_unregister_driver(&e7xxx_driver); @@ -551,8 +550,7 @@ static void __exit e7xxx_exit(void) module_init(e7xxx_init); module_exit(e7xxx_exit); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n" - "Based on.work by Dan Hollis et al"); + "Based on.work by Dan Hollis et al"); MODULE_DESCRIPTION("MC support for Intel e7xxx memory controllers"); diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index 9c205274c1c..ea06e3a4dc3 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -12,7 +12,6 @@ * */ - #include <linux/config.h> #include <linux/module.h> #include <linux/proc_fs.h> @@ -29,14 +28,13 @@ #include <linux/list.h> #include <linux/sysdev.h> #include <linux/ctype.h> - +#include <linux/kthread.h> #include <asm/uaccess.h> #include <asm/page.h> #include <asm/edac.h> - #include "edac_mc.h" -#define EDAC_MC_VERSION "edac_mc Ver: 2.0.0 " __DATE__ +#define EDAC_MC_VERSION "Ver: 2.0.0 " __DATE__ /* For now, disable the EDAC sysfs code. The sysfs interface that EDAC * presents to user space needs more thought, and is likely to change @@ -47,7 +45,7 @@ #ifdef CONFIG_EDAC_DEBUG /* Values of 0 to 4 will generate output */ int edac_debug_level = 1; -EXPORT_SYMBOL(edac_debug_level); +EXPORT_SYMBOL_GPL(edac_debug_level); #endif /* EDAC Controls, setable by module parameter, and sysfs */ @@ -64,13 +62,14 @@ static atomic_t pci_parity_count = ATOMIC_INIT(0); static DECLARE_MUTEX(mem_ctls_mutex); static struct list_head mc_devices = LIST_HEAD_INIT(mc_devices); +static struct task_struct *edac_thread; + /* Structure of the whitelist and blacklist arrays */ struct edac_pci_device_list { unsigned int vendor; /* Vendor ID */ unsigned int device; /* Deviice ID */ }; - #define MAX_LISTED_PCI_DEVICES 32 /* List of PCI devices (vendor-id:device-id) that should be skipped */ @@ -123,7 +122,6 @@ static const char *edac_caps[] = { [EDAC_S16ECD16ED] = "S16ECD16ED" }; - /* sysfs object: /sys/devices/system/edac */ static struct sysdev_class edac_class = { set_kset_name("edac"), @@ -136,9 +134,15 @@ static struct sysdev_class edac_class = { static struct kobject edac_memctrl_kobj; static struct kobject edac_pci_kobj; +/* We use these to wait for the reference counts on edac_memctrl_kobj and + * edac_pci_kobj to reach 0. + */ +static struct completion edac_memctrl_kobj_complete; +static struct completion edac_pci_kobj_complete; + /* * /sys/devices/system/edac/mc; - * data structures and methods + * data structures and methods */ #if 0 static ssize_t memctrl_string_show(void *ptr, char *buffer) @@ -165,33 +169,34 @@ static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count) } struct memctrl_dev_attribute { - struct attribute attr; - void *value; + struct attribute attr; + void *value; ssize_t (*show)(void *,char *); ssize_t (*store)(void *, const char *, size_t); }; /* Set of show/store abstract level functions for memory control object */ -static ssize_t -memctrl_dev_show(struct kobject *kobj, struct attribute *attr, char *buffer) +static ssize_t memctrl_dev_show(struct kobject *kobj, + struct attribute *attr, char *buffer) { struct memctrl_dev_attribute *memctrl_dev; memctrl_dev = (struct memctrl_dev_attribute*)attr; if (memctrl_dev->show) return memctrl_dev->show(memctrl_dev->value, buffer); + return -EIO; } -static ssize_t -memctrl_dev_store(struct kobject *kobj, struct attribute *attr, - const char *buffer, size_t count) +static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr, + const char *buffer, size_t count) { struct memctrl_dev_attribute *memctrl_dev; memctrl_dev = (struct memctrl_dev_attribute*)attr; if (memctrl_dev->store) return memctrl_dev->store(memctrl_dev->value, buffer, count); + return -EIO; } @@ -227,7 +232,6 @@ MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); MEMCTRL_ATTR(log_ce,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); MEMCTRL_ATTR(poll_msec,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store); - /* Base Attributes of the memory ECC object */ static struct memctrl_dev_attribute *memctrl_attr[] = { &attr_panic_on_ue, @@ -240,13 +244,14 @@ static struct memctrl_dev_attribute *memctrl_attr[] = { /* Main MC kobject release() function */ static void edac_memctrl_master_release(struct kobject *kobj) { - debugf1("EDAC MC: " __FILE__ ": %s()\n", __func__); + debugf1("%s()\n", __func__); + complete(&edac_memctrl_kobj_complete); } static struct kobj_type ktype_memctrl = { - .release = edac_memctrl_master_release, - .sysfs_ops = &memctrlfs_ops, - .default_attrs = (struct attribute **) memctrl_attr, + .release = edac_memctrl_master_release, + .sysfs_ops = &memctrlfs_ops, + .default_attrs = (struct attribute **) memctrl_attr, }; #endif /* DISABLE_EDAC_SYSFS */ @@ -268,32 +273,31 @@ static int edac_sysfs_memctrl_setup(void) { int err=0; - debugf1("MC: " __FILE__ ": %s()\n", __func__); + debugf1("%s()\n", __func__); /* create the /sys/devices/system/edac directory */ err = sysdev_class_register(&edac_class); + if (!err) { /* Init the MC's kobject */ memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj)); - kobject_init(&edac_memctrl_kobj); - edac_memctrl_kobj.parent = &edac_class.kset.kobj; edac_memctrl_kobj.ktype = &ktype_memctrl; /* generate sysfs "..../edac/mc" */ err = kobject_set_name(&edac_memctrl_kobj,"mc"); + if (!err) { /* FIXME: maybe new sysdev_create_subdir() */ err = kobject_register(&edac_memctrl_kobj); - if (err) { + + if (err) debugf1("Failed to register '.../edac/mc'\n"); - } else { + else debugf1("Registered '.../edac/mc' kobject\n"); - } } - } else { - debugf1(KERN_WARNING "__FILE__ %s() error=%d\n", __func__,err); - } + } else + debugf1("%s() error=%d\n", __func__, err); return err; } @@ -308,11 +312,12 @@ static void edac_sysfs_memctrl_teardown(void) #ifndef DISABLE_EDAC_SYSFS debugf0("MC: " __FILE__ ": %s()\n", __func__); - /* Unregister the MC's kobject */ + /* Unregister the MC's kobject and wait for reference count to reach + * 0. + */ + init_completion(&edac_memctrl_kobj_complete); kobject_unregister(&edac_memctrl_kobj); - - /* release the master edac mc kobject */ - kobject_put(&edac_memctrl_kobj); + wait_for_completion(&edac_memctrl_kobj_complete); /* Unregister the 'edac' object */ sysdev_class_unregister(&edac_class); @@ -331,7 +336,6 @@ struct list_control { int *count; }; - #if 0 /* Output the list as: vendor_id:device:id<,vendor_id:device_id> */ static ssize_t edac_pci_list_string_show(void *ptr, char *buffer) @@ -356,7 +360,6 @@ static ssize_t edac_pci_list_string_show(void *ptr, char *buffer) } len += snprintf(p + len,(PAGE_SIZE-len), "\n"); - return (ssize_t) len; } @@ -378,7 +381,7 @@ static int parse_one_device(const char **s,const char **e, /* if null byte, we are done */ if (!**s) { - (*s)++; /* keep *s moving */ + (*s)++; /* keep *s moving */ return 0; } @@ -395,6 +398,7 @@ static int parse_one_device(const char **s,const char **e, /* parse vendor_id */ runner = *s; + while (runner < *e) { /* scan for vendor:device delimiter */ if (*runner == ':') { @@ -402,6 +406,7 @@ static int parse_one_device(const char **s,const char **e, runner = p + 1; break; } + runner++; } @@ -417,12 +422,11 @@ static int parse_one_device(const char **s,const char **e, } *s = runner; - return 1; } static ssize_t edac_pci_list_string_store(void *ptr, const char *buffer, - size_t count) + size_t count) { struct list_control *listctl; struct edac_pci_device_list *list; @@ -432,14 +436,12 @@ static ssize_t edac_pci_list_string_store(void *ptr, const char *buffer, s = (char*)buffer; e = s + count; - listctl = ptr; list = listctl->list; index = listctl->count; - *index = 0; - while (*index < MAX_LISTED_PCI_DEVICES) { + while (*index < MAX_LISTED_PCI_DEVICES) { if (parse_one_device(&s,&e,&vendor_id,&device_id)) { list[ *index ].vendor = vendor_id; list[ *index ].device = device_id; @@ -472,15 +474,15 @@ static ssize_t edac_pci_int_store(void *ptr, const char *buffer, size_t count) } struct edac_pci_dev_attribute { - struct attribute attr; - void *value; + struct attribute attr; + void *value; ssize_t (*show)(void *,char *); ssize_t (*store)(void *, const char *,size_t); }; /* Set of show/store abstract level functions for PCI Parity object */ static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr, - char *buffer) + char *buffer) { struct edac_pci_dev_attribute *edac_pci_dev; edac_pci_dev= (struct edac_pci_dev_attribute*)attr; @@ -490,8 +492,8 @@ static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr, return -EIO; } -static ssize_t edac_pci_dev_store(struct kobject *kobj, struct attribute *attr, - const char *buffer, size_t count) +static ssize_t edac_pci_dev_store(struct kobject *kobj, + struct attribute *attr, const char *buffer, size_t count) { struct edac_pci_dev_attribute *edac_pci_dev; edac_pci_dev= (struct edac_pci_dev_attribute*)attr; @@ -506,7 +508,6 @@ static struct sysfs_ops edac_pci_sysfs_ops = { .store = edac_pci_dev_store }; - #define EDAC_PCI_ATTR(_name,_mode,_show,_store) \ struct edac_pci_dev_attribute edac_pci_attr_##_name = { \ .attr = {.name = __stringify(_name), .mode = _mode }, \ @@ -549,9 +550,11 @@ EDAC_PCI_STRING_ATTR(pci_parity_blacklist, #endif /* PCI Parity control files */ -EDAC_PCI_ATTR(check_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); -EDAC_PCI_ATTR(panic_on_pci_parity,S_IRUGO|S_IWUSR,edac_pci_int_show,edac_pci_int_store); -EDAC_PCI_ATTR(pci_parity_count,S_IRUGO,edac_pci_int_show,NULL); +EDAC_PCI_ATTR(check_pci_parity, S_IRUGO|S_IWUSR, edac_pci_int_show, + edac_pci_int_store); +EDAC_PCI_ATTR(panic_on_pci_parity, S_IRUGO|S_IWUSR, edac_pci_int_show, + edac_pci_int_store); +EDAC_PCI_ATTR(pci_parity_count, S_IRUGO, edac_pci_int_show, NULL); /* Base Attributes of the memory ECC object */ static struct edac_pci_dev_attribute *edac_pci_attr[] = { @@ -564,13 +567,14 @@ static struct edac_pci_dev_attribute *edac_pci_attr[] = { /* No memory to release */ static void edac_pci_release(struct kobject *kobj) { - debugf1("EDAC PCI: " __FILE__ ": %s()\n", __func__); + debugf1("%s()\n", __func__); + complete(&edac_pci_kobj_complete); } static struct kobj_type ktype_edac_pci = { - .release = edac_pci_release, - .sysfs_ops = &edac_pci_sysfs_ops, - .default_attrs = (struct attribute **) edac_pci_attr, + .release = edac_pci_release, + .sysfs_ops = &edac_pci_sysfs_ops, + .default_attrs = (struct attribute **) edac_pci_attr, }; #endif /* DISABLE_EDAC_SYSFS */ @@ -588,24 +592,24 @@ static int edac_sysfs_pci_setup(void) { int err; - debugf1("MC: " __FILE__ ": %s()\n", __func__); + debugf1("%s()\n", __func__); memset(&edac_pci_kobj, 0, sizeof(edac_pci_kobj)); - - kobject_init(&edac_pci_kobj); edac_pci_kobj.parent = &edac_class.kset.kobj; edac_pci_kobj.ktype = &ktype_edac_pci; - err = kobject_set_name(&edac_pci_kobj, "pci"); + if (!err) { /* Instanstiate the csrow object */ /* FIXME: maybe new sysdev_create_subdir() */ err = kobject_register(&edac_pci_kobj); + if (err) debugf1("Failed to register '.../edac/pci'\n"); else debugf1("Registered '.../edac/pci' kobject\n"); } + return err; } #endif /* DISABLE_EDAC_SYSFS */ @@ -613,10 +617,10 @@ static int edac_sysfs_pci_setup(void) static void edac_sysfs_pci_teardown(void) { #ifndef DISABLE_EDAC_SYSFS - debugf0("MC: " __FILE__ ": %s()\n", __func__); - + debugf0("%s()\n", __func__); + init_completion(&edac_pci_kobj_complete); kobject_unregister(&edac_pci_kobj); - kobject_put(&edac_pci_kobj); + wait_for_completion(&edac_pci_kobj_complete); #endif } @@ -633,6 +637,7 @@ static ssize_t csrow_ch0_dimm_label_show(struct csrow_info *csrow, char *data) size = snprintf(data, EDAC_MC_LABEL_LEN,"%s\n", csrow->channels[0].label); } + return size; } @@ -644,11 +649,12 @@ static ssize_t csrow_ch1_dimm_label_show(struct csrow_info *csrow, char *data) size = snprintf(data, EDAC_MC_LABEL_LEN, "%s\n", csrow->channels[1].label); } + return size; } static ssize_t csrow_ch0_dimm_label_store(struct csrow_info *csrow, - const char *data, size_t size) + const char *data, size_t size) { ssize_t max_size = 0; @@ -657,11 +663,12 @@ static ssize_t csrow_ch0_dimm_label_store(struct csrow_info *csrow, strncpy(csrow->channels[0].label, data, max_size); csrow->channels[0].label[max_size] = '\0'; } + return size; } static ssize_t csrow_ch1_dimm_label_store(struct csrow_info *csrow, - const char *data, size_t size) + const char *data, size_t size) { ssize_t max_size = 0; @@ -670,6 +677,7 @@ static ssize_t csrow_ch1_dimm_label_store(struct csrow_info *csrow, strncpy(csrow->channels[1].label, data, max_size); csrow->channels[1].label[max_size] = '\0'; } + return max_size; } @@ -690,6 +698,7 @@ static ssize_t csrow_ch0_ce_count_show(struct csrow_info *csrow, char *data) if (csrow->nr_channels > 0) { size = sprintf(data,"%u\n", csrow->channels[0].ce_count); } + return size; } @@ -700,6 +709,7 @@ static ssize_t csrow_ch1_ce_count_show(struct csrow_info *csrow, char *data) if (csrow->nr_channels > 1) { size = sprintf(data,"%u\n", csrow->channels[1].ce_count); } + return size; } @@ -724,7 +734,7 @@ static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data) } struct csrowdev_attribute { - struct attribute attr; + struct attribute attr; ssize_t (*show)(struct csrow_info *,char *); ssize_t (*store)(struct csrow_info *, const char *,size_t); }; @@ -734,24 +744,26 @@ struct csrowdev_attribute { /* Set of show/store higher level functions for csrow objects */ static ssize_t csrowdev_show(struct kobject *kobj, struct attribute *attr, - char *buffer) + char *buffer) { struct csrow_info *csrow = to_csrow(kobj); struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr); if (csrowdev_attr->show) return csrowdev_attr->show(csrow, buffer); + return -EIO; } static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr, - const char *buffer, size_t count) + const char *buffer, size_t count) { struct csrow_info *csrow = to_csrow(kobj); struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr); if (csrowdev_attr->store) return csrowdev_attr->store(csrow, buffer, count); + return -EIO; } @@ -785,7 +797,6 @@ CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR, csrow_ch1_dimm_label_show, csrow_ch1_dimm_label_store); - /* Attributes of the CSROW<id> object */ static struct csrowdev_attribute *csrow_attr[] = { &attr_dev_type, @@ -801,40 +812,43 @@ static struct csrowdev_attribute *csrow_attr[] = { NULL, }; - /* No memory to release */ static void edac_csrow_instance_release(struct kobject *kobj) { - debugf1("EDAC MC: " __FILE__ ": %s()\n", __func__); + struct csrow_info *cs; + + debugf1("%s()\n", __func__); + cs = container_of(kobj, struct csrow_info, kobj); + complete(&cs->kobj_complete); } static struct kobj_type ktype_csrow = { - .release = edac_csrow_instance_release, - .sysfs_ops = &csrowfs_ops, - .default_attrs = (struct attribute **) csrow_attr, + .release = edac_csrow_instance_release, + .sysfs_ops = &csrowfs_ops, + .default_attrs = (struct attribute **) csrow_attr, }; /* Create a CSROW object under specifed edac_mc_device */ static int edac_create_csrow_object(struct kobject *edac_mci_kobj, - struct csrow_info *csrow, int index ) + struct csrow_info *csrow, int index) { int err = 0; - debugf0("MC: " __FILE__ ": %s()\n", __func__); - + debugf0("%s()\n", __func__); memset(&csrow->kobj, 0, sizeof(csrow->kobj)); /* generate ..../edac/mc/mc<id>/csrow<index> */ - kobject_init(&csrow->kobj); csrow->kobj.parent = edac_mci_kobj; csrow->kobj.ktype = &ktype_csrow; /* name this instance of csrow<id> */ err = kobject_set_name(&csrow->kobj,"csrow%d",index); + if (!err) { /* Instanstiate the csrow object */ err = kobject_register(&csrow->kobj); + if (err) debugf0("Failed to register CSROW%d\n",index); else @@ -846,8 +860,8 @@ static int edac_create_csrow_object(struct kobject *edac_mci_kobj, /* sysfs data structures and methods for the MCI kobjects */ -static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, - const char *data, size_t count ) +static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, + const char *data, size_t count) { int row, chan; @@ -855,16 +869,18 @@ static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci, mci->ce_noinfo_count = 0; mci->ue_count = 0; mci->ce_count = 0; + for (row = 0; row < mci->nr_csrows; row++) { struct csrow_info *ri = &mci->csrows[row]; ri->ue_count = 0; ri->ce_count = 0; + for (chan = 0; chan < ri->nr_channels; chan++) ri->channels[chan].ce_count = 0; } - mci->start_time = jiffies; + mci->start_time = jiffies; return count; } @@ -922,18 +938,16 @@ static ssize_t mci_edac_capability_show(struct mem_ctl_info *mci, char *data) p += mci_output_edac_cap(p,mci->edac_ctl_cap); p += sprintf(p, "\n"); - return p - data; } static ssize_t mci_edac_current_capability_show(struct mem_ctl_info *mci, - char *data) + char *data) { char *p = data; p += mci_output_edac_cap(p,mci->edac_cap); p += sprintf(p, "\n"); - return p - data; } @@ -950,13 +964,13 @@ static int mci_output_mtype_cap(char *buf, unsigned long mtype_cap) return p - buf; } -static ssize_t mci_supported_mem_type_show(struct mem_ctl_info *mci, char *data) +static ssize_t mci_supported_mem_type_show(struct mem_ctl_info *mci, + char *data) { char *p = data; p += mci_output_mtype_cap(p,mci->mtype_cap); p += sprintf(p, "\n"); - return p - data; } @@ -970,6 +984,7 @@ static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) if (!csrow->nr_pages) continue; + total_pages += csrow->nr_pages; } @@ -977,7 +992,7 @@ static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data) } struct mcidev_attribute { - struct attribute attr; + struct attribute attr; ssize_t (*show)(struct mem_ctl_info *,char *); ssize_t (*store)(struct mem_ctl_info *, const char *,size_t); }; @@ -986,30 +1001,32 @@ struct mcidev_attribute { #define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr) static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr, - char *buffer) + char *buffer) { struct mem_ctl_info *mem_ctl_info = to_mci(kobj); struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); if (mcidev_attr->show) return mcidev_attr->show(mem_ctl_info, buffer); + return -EIO; } static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr, - const char *buffer, size_t count) + const char *buffer, size_t count) { struct mem_ctl_info *mem_ctl_info = to_mci(kobj); struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr); if (mcidev_attr->store) return mcidev_attr->store(mem_ctl_info, buffer, count); + return -EIO; } static struct sysfs_ops mci_ops = { - .show = mcidev_show, - .store = mcidev_store + .show = mcidev_show, + .store = mcidev_store }; #define MCIDEV_ATTR(_name,_mode,_show,_store) \ @@ -1037,7 +1054,6 @@ MCIDEV_ATTR(edac_current_capability,S_IRUGO, MCIDEV_ATTR(supported_mem_type,S_IRUGO, mci_supported_mem_type_show,NULL); - static struct mcidev_attribute *mci_attr[] = { &mci_attr_reset_counters, &mci_attr_module_name, @@ -1054,25 +1070,22 @@ static struct mcidev_attribute *mci_attr[] = { NULL }; - /* * Release of a MC controlling instance */ static void edac_mci_instance_release(struct kobject *kobj) { struct mem_ctl_info *mci; - mci = container_of(kobj,struct mem_ctl_info,edac_mci_kobj); - debugf0("MC: " __FILE__ ": %s() idx=%d calling kfree\n", - __func__, mci->mc_idx); - - kfree(mci); + mci = to_mci(kobj); + debugf0("%s() idx=%d\n", __func__, mci->mc_idx); + complete(&mci->kobj_complete); } static struct kobj_type ktype_mci = { - .release = edac_mci_instance_release, - .sysfs_ops = &mci_ops, - .default_attrs = (struct attribute **) mci_attr, + .release = edac_mci_instance_release, + .sysfs_ops = &mci_ops, + .default_attrs = (struct attribute **) mci_attr, }; #endif /* DISABLE_EDAC_SYSFS */ @@ -1099,13 +1112,12 @@ static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) struct csrow_info *csrow; struct kobject *edac_mci_kobj=&mci->edac_mci_kobj; - debugf0("MC: " __FILE__ ": %s() idx=%d\n", __func__, mci->mc_idx); - + debugf0("%s() idx=%d\n", __func__, mci->mc_idx); memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj)); - kobject_init(edac_mci_kobj); /* set the name of the mc<id> object */ err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx); + if (err) return err; @@ -1115,50 +1127,48 @@ static int edac_create_sysfs_mci_device(struct mem_ctl_info *mci) /* register the mc<id> kobject */ err = kobject_register(edac_mci_kobj); + if (err) return err; /* create a symlink for the device */ err = sysfs_create_link(edac_mci_kobj, &mci->pdev->dev.kobj, EDAC_DEVICE_SYMLINK); - if (err) { - kobject_unregister(edac_mci_kobj); - return err; - } + + if (err) + goto fail0; /* Make directories for each CSROW object * under the mc<id> kobject */ for (i = 0; i < mci->nr_csrows; i++) { - csrow = &mci->csrows[i]; /* Only expose populated CSROWs */ if (csrow->nr_pages > 0) { err = edac_create_csrow_object(edac_mci_kobj,csrow,i); + if (err) - goto fail; + goto fail1; } } - /* Mark this MCI instance as having sysfs entries */ - mci->sysfs_active = MCI_SYSFS_ACTIVE; - return 0; - /* CSROW error: backout what has already been registered, */ -fail: +fail1: for ( i--; i >= 0; i--) { if (csrow->nr_pages > 0) { + init_completion(&csrow->kobj_complete); kobject_unregister(&mci->csrows[i].kobj); - kobject_put(&mci->csrows[i].kobj); + wait_for_completion(&csrow->kobj_complete); } } +fail0: + init_completion(&mci->kobj_complete); kobject_unregister(edac_mci_kobj); - kobject_put(edac_mci_kobj); - + wait_for_completion(&mci->kobj_complete); return err; } #endif /* DISABLE_EDAC_SYSFS */ @@ -1171,20 +1181,21 @@ static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) #ifndef DISABLE_EDAC_SYSFS int i; - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); /* remove all csrow kobjects */ for (i = 0; i < mci->nr_csrows; i++) { - if (mci->csrows[i].nr_pages > 0) { + if (mci->csrows[i].nr_pages > 0) { + init_completion(&mci->csrows[i].kobj_complete); kobject_unregister(&mci->csrows[i].kobj); - kobject_put(&mci->csrows[i].kobj); + wait_for_completion(&mci->csrows[i].kobj_complete); } } sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK); - + init_completion(&mci->kobj_complete); kobject_unregister(&mci->edac_mci_kobj); - kobject_put(&mci->edac_mci_kobj); + wait_for_completion(&mci->kobj_complete); #endif /* DISABLE_EDAC_SYSFS */ } @@ -1192,8 +1203,6 @@ static void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci) #ifdef CONFIG_EDAC_DEBUG -EXPORT_SYMBOL(edac_mc_dump_channel); - void edac_mc_dump_channel(struct channel_info *chan) { debugf4("\tchannel = %p\n", chan); @@ -1202,9 +1211,7 @@ void edac_mc_dump_channel(struct channel_info *chan) debugf4("\tchannel->label = '%s'\n", chan->label); debugf4("\tchannel->csrow = %p\n\n", chan->csrow); } - - -EXPORT_SYMBOL(edac_mc_dump_csrow); +EXPORT_SYMBOL_GPL(edac_mc_dump_channel); void edac_mc_dump_csrow(struct csrow_info *csrow) { @@ -1220,9 +1227,7 @@ void edac_mc_dump_csrow(struct csrow_info *csrow) debugf4("\tcsrow->channels = %p\n", csrow->channels); debugf4("\tcsrow->mci = %p\n\n", csrow->mci); } - - -EXPORT_SYMBOL(edac_mc_dump_mci); +EXPORT_SYMBOL_GPL(edac_mc_dump_csrow); void edac_mc_dump_mci(struct mem_ctl_info *mci) { @@ -1238,9 +1243,9 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci) mci->mod_name, mci->ctl_name); debugf3("\tpvt_info = %p\n\n", mci->pvt_info); } +EXPORT_SYMBOL_GPL(edac_mc_dump_mci); - -#endif /* CONFIG_EDAC_DEBUG */ +#endif /* CONFIG_EDAC_DEBUG */ /* 'ptr' points to a possibly unaligned item X such that sizeof(X) is 'size'. * Adjust 'ptr' so that its alignment is at least as stringent as what the @@ -1249,7 +1254,7 @@ void edac_mc_dump_mci(struct mem_ctl_info *mci) * If 'size' is a constant, the compiler will optimize this whole function * down to either a no-op or the addition of a constant to the value of 'ptr'. */ -static inline char * align_ptr (void *ptr, unsigned size) +static inline char * align_ptr(void *ptr, unsigned size) { unsigned align, r; @@ -1276,9 +1281,6 @@ static inline char * align_ptr (void *ptr, unsigned size) return (char *) (((unsigned long) ptr) + align - r); } - -EXPORT_SYMBOL(edac_mc_alloc); - /** * edac_mc_alloc: Allocate a struct mem_ctl_info structure * @size_pvt: size of private storage needed @@ -1296,7 +1298,7 @@ EXPORT_SYMBOL(edac_mc_alloc); * struct mem_ctl_info pointer */ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, - unsigned nr_chans) + unsigned nr_chans) { struct mem_ctl_info *mci; struct csrow_info *csi, *csrow; @@ -1327,8 +1329,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, chi = (struct channel_info *) (((char *) mci) + ((unsigned long) chi)); pvt = sz_pvt ? (((char *) mci) + ((unsigned long) pvt)) : NULL; - memset(mci, 0, size); /* clear all fields */ - + memset(mci, 0, size); /* clear all fields */ mci->csrows = csi; mci->pvt_info = pvt; mci->nr_csrows = nr_csrows; @@ -1350,50 +1351,24 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, return mci; } - - -EXPORT_SYMBOL(edac_mc_free); +EXPORT_SYMBOL_GPL(edac_mc_alloc); /** * edac_mc_free: Free a previously allocated 'mci' structure * @mci: pointer to a struct mem_ctl_info structure - * - * Free up a previously allocated mci structure - * A MCI structure can be in 2 states after being allocated - * by edac_mc_alloc(). - * 1) Allocated in a MC driver's probe, but not yet committed - * 2) Allocated and committed, by a call to edac_mc_add_mc() - * edac_mc_add_mc() is the function that adds the sysfs entries - * thus, this free function must determine which state the 'mci' - * structure is in, then either free it directly or - * perform kobject cleanup by calling edac_remove_sysfs_mci_device(). - * - * VOID Return */ void edac_mc_free(struct mem_ctl_info *mci) { - /* only if sysfs entries for this mci instance exist - * do we remove them and defer the actual kfree via - * the kobject 'release()' callback. - * - * Otherwise, do a straight kfree now. - */ - if (mci->sysfs_active == MCI_SYSFS_ACTIVE) - edac_remove_sysfs_mci_device(mci); - else - kfree(mci); + kfree(mci); } +EXPORT_SYMBOL_GPL(edac_mc_free); - - -EXPORT_SYMBOL(edac_mc_find_mci_by_pdev); - -struct mem_ctl_info *edac_mc_find_mci_by_pdev(struct pci_dev *pdev) +static struct mem_ctl_info *find_mci_by_pdev(struct pci_dev *pdev) { struct mem_ctl_info *mci; struct list_head *item; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); @@ -1405,7 +1380,7 @@ struct mem_ctl_info *edac_mc_find_mci_by_pdev(struct pci_dev *pdev) return NULL; } -static int add_mc_to_global_list (struct mem_ctl_info *mci) +static int add_mc_to_global_list(struct mem_ctl_info *mci) { struct list_head *item, *insert_before; struct mem_ctl_info *p; @@ -1415,11 +1390,12 @@ static int add_mc_to_global_list (struct mem_ctl_info *mci) mci->mc_idx = 0; insert_before = &mc_devices; } else { - if (edac_mc_find_mci_by_pdev(mci->pdev)) { - printk(KERN_WARNING - "EDAC MC: %s (%s) %s %s already assigned %d\n", - mci->pdev->dev.bus_id, pci_name(mci->pdev), - mci->mod_name, mci->ctl_name, mci->mc_idx); + if (find_mci_by_pdev(mci->pdev)) { + edac_printk(KERN_WARNING, EDAC_MC, + "%s (%s) %s %s already assigned %d\n", + mci->pdev->dev.bus_id, + pci_name(mci->pdev), mci->mod_name, + mci->ctl_name, mci->mc_idx); return 1; } @@ -1447,12 +1423,26 @@ static int add_mc_to_global_list (struct mem_ctl_info *mci) return 0; } +static void complete_mc_list_del(struct rcu_head *head) +{ + struct mem_ctl_info *mci; + mci = container_of(head, struct mem_ctl_info, rcu); + INIT_LIST_HEAD(&mci->link); + complete(&mci->complete); +} -EXPORT_SYMBOL(edac_mc_add_mc); +static void del_mc_from_global_list(struct mem_ctl_info *mci) +{ + list_del_rcu(&mci->link); + init_completion(&mci->complete); + call_rcu(&mci->rcu, complete_mc_list_del); + wait_for_completion(&mci->complete); +} /** - * edac_mc_add_mc: Insert the 'mci' structure into the mci global list + * edac_mc_add_mc: Insert the 'mci' structure into the mci global list and + * create sysfs entries associated with mci structure * @mci: pointer to the mci structure to be added to the list * * Return: @@ -1463,111 +1453,90 @@ EXPORT_SYMBOL(edac_mc_add_mc); /* FIXME - should a warning be printed if no error detection? correction? */ int edac_mc_add_mc(struct mem_ctl_info *mci) { - int rc = 1; - - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); #ifdef CONFIG_EDAC_DEBUG if (edac_debug_level >= 3) edac_mc_dump_mci(mci); + if (edac_debug_level >= 4) { int i; for (i = 0; i < mci->nr_csrows; i++) { int j; + edac_mc_dump_csrow(&mci->csrows[i]); for (j = 0; j < mci->csrows[i].nr_channels; j++) - edac_mc_dump_channel(&mci->csrows[i]. - channels[j]); + edac_mc_dump_channel( + &mci->csrows[i].channels[j]); } } #endif down(&mem_ctls_mutex); if (add_mc_to_global_list(mci)) - goto finish; + goto fail0; /* set load time so that error rate can be tracked */ mci->start_time = jiffies; if (edac_create_sysfs_mci_device(mci)) { - printk(KERN_WARNING - "EDAC MC%d: failed to create sysfs device\n", - mci->mc_idx); - /* FIXME - should there be an error code and unwind? */ - goto finish; + edac_mc_printk(mci, KERN_WARNING, + "failed to create sysfs device\n"); + goto fail1; } /* Report action taken */ - printk(KERN_INFO - "EDAC MC%d: Giving out device to %s %s: PCI %s\n", - mci->mc_idx, mci->mod_name, mci->ctl_name, - pci_name(mci->pdev)); + edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: PCI %s\n", + mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); - - rc = 0; - -finish: up(&mem_ctls_mutex); - return rc; -} - - - -static void complete_mc_list_del (struct rcu_head *head) -{ - struct mem_ctl_info *mci; + return 0; - mci = container_of(head, struct mem_ctl_info, rcu); - INIT_LIST_HEAD(&mci->link); - complete(&mci->complete); -} +fail1: + del_mc_from_global_list(mci); -static void del_mc_from_global_list (struct mem_ctl_info *mci) -{ - list_del_rcu(&mci->link); - init_completion(&mci->complete); - call_rcu(&mci->rcu, complete_mc_list_del); - wait_for_completion(&mci->complete); +fail0: + up(&mem_ctls_mutex); + return 1; } - -EXPORT_SYMBOL(edac_mc_del_mc); +EXPORT_SYMBOL_GPL(edac_mc_add_mc); /** - * edac_mc_del_mc: Remove the specified mci structure from global list - * @mci: Pointer to struct mem_ctl_info structure + * edac_mc_del_mc: Remove sysfs entries for specified mci structure and + * remove mci structure from global list + * @pdev: Pointer to 'struct pci_dev' representing mci structure to remove. * - * Returns: - * 0 Success - * 1 Failure + * Return pointer to removed mci structure, or NULL if device not found. */ -int edac_mc_del_mc(struct mem_ctl_info *mci) +struct mem_ctl_info * edac_mc_del_mc(struct pci_dev *pdev) { - int rc = 1; + struct mem_ctl_info *mci; - debugf0("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf0("MC: %s()\n", __func__); down(&mem_ctls_mutex); + + if ((mci = find_mci_by_pdev(pdev)) == NULL) { + up(&mem_ctls_mutex); + return NULL; + } + + edac_remove_sysfs_mci_device(mci); del_mc_from_global_list(mci); - printk(KERN_INFO - "EDAC MC%d: Removed device %d for %s %s: PCI %s\n", - mci->mc_idx, mci->mc_idx, mci->mod_name, mci->ctl_name, - pci_name(mci->pdev)); - rc = 0; up(&mem_ctls_mutex); - - return rc; + edac_printk(KERN_INFO, EDAC_MC, + "Removed device %d for %s %s: PCI %s\n", mci->mc_idx, + mci->mod_name, mci->ctl_name, pci_name(mci->pdev)); + return mci; } +EXPORT_SYMBOL_GPL(edac_mc_del_mc); - -EXPORT_SYMBOL(edac_mc_scrub_block); - -void edac_mc_scrub_block(unsigned long page, unsigned long offset, - u32 size) +void edac_mc_scrub_block(unsigned long page, unsigned long offset, u32 size) { struct page *pg; void *virt_addr; unsigned long flags = 0; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); /* ECC error page was not in our memory. Ignore it. */ if(!pfn_valid(page)) @@ -1590,19 +1559,15 @@ void edac_mc_scrub_block(unsigned long page, unsigned long offset, if (PageHighMem(pg)) local_irq_restore(flags); } - +EXPORT_SYMBOL_GPL(edac_mc_scrub_block); /* FIXME - should return -1 */ -EXPORT_SYMBOL(edac_mc_find_csrow_by_page); - -int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, - unsigned long page) +int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, unsigned long page) { struct csrow_info *csrows = mci->csrows; int row, i; - debugf1("MC%d: " __FILE__ ": %s(): 0x%lx\n", mci->mc_idx, __func__, - page); + debugf1("MC%d: %s(): 0x%lx\n", mci->mc_idx, __func__, page); row = -1; for (i = 0; i < mci->nr_csrows; i++) { @@ -1611,11 +1576,10 @@ int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, if (csrow->nr_pages == 0) continue; - debugf3("MC%d: " __FILE__ - ": %s(): first(0x%lx) page(0x%lx)" - " last(0x%lx) mask(0x%lx)\n", mci->mc_idx, - __func__, csrow->first_page, page, - csrow->last_page, csrow->page_mask); + debugf3("MC%d: %s(): first(0x%lx) page(0x%lx) last(0x%lx) " + "mask(0x%lx)\n", mci->mc_idx, __func__, + csrow->first_page, page, csrow->last_page, + csrow->page_mask); if ((page >= csrow->first_page) && (page <= csrow->last_page) && @@ -1627,56 +1591,52 @@ int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, } if (row == -1) - printk(KERN_ERR - "EDAC MC%d: could not look up page error address %lx\n", - mci->mc_idx, (unsigned long) page); + edac_mc_printk(mci, KERN_ERR, + "could not look up page error address %lx\n", + (unsigned long) page); return row; } - - -EXPORT_SYMBOL(edac_mc_handle_ce); +EXPORT_SYMBOL_GPL(edac_mc_find_csrow_by_page); /* FIXME - setable log (warning/emerg) levels */ /* FIXME - integrate with evlog: http://evlog.sourceforge.net/ */ void edac_mc_handle_ce(struct mem_ctl_info *mci, - unsigned long page_frame_number, - unsigned long offset_in_page, - unsigned long syndrome, int row, int channel, - const char *msg) + unsigned long page_frame_number, unsigned long offset_in_page, + unsigned long syndrome, int row, int channel, const char *msg) { unsigned long remapped_page; - debugf3("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf3("MC%d: %s()\n", mci->mc_idx, __func__); /* FIXME - maybe make panic on INTERNAL ERROR an option */ if (row >= mci->nr_csrows || row < 0) { /* something is wrong */ - printk(KERN_ERR - "EDAC MC%d: INTERNAL ERROR: row out of range (%d >= %d)\n", - mci->mc_idx, row, mci->nr_csrows); + edac_mc_printk(mci, KERN_ERR, + "INTERNAL ERROR: row out of range " + "(%d >= %d)\n", row, mci->nr_csrows); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } + if (channel >= mci->csrows[row].nr_channels || channel < 0) { /* something is wrong */ - printk(KERN_ERR - "EDAC MC%d: INTERNAL ERROR: channel out of range " - "(%d >= %d)\n", - mci->mc_idx, channel, mci->csrows[row].nr_channels); + edac_mc_printk(mci, KERN_ERR, + "INTERNAL ERROR: channel out of range " + "(%d >= %d)\n", channel, + mci->csrows[row].nr_channels); edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR"); return; } if (log_ce) /* FIXME - put in DIMM location */ - printk(KERN_WARNING - "EDAC MC%d: CE page 0x%lx, offset 0x%lx," - " grain %d, syndrome 0x%lx, row %d, channel %d," - " label \"%s\": %s\n", mci->mc_idx, - page_frame_number, offset_in_page, - mci->csrows[row].grain, syndrome, row, channel, - mci->csrows[row].channels[channel].label, msg); + edac_mc_printk(mci, KERN_WARNING, + "CE page 0x%lx, offset 0x%lx, grain %d, syndrome " + "0x%lx, row %d, channel %d, label \"%s\": %s\n", + page_frame_number, offset_in_page, + mci->csrows[row].grain, syndrome, row, channel, + mci->csrows[row].channels[channel].label, msg); mci->ce_count++; mci->csrows[row].ce_count++; @@ -1697,31 +1657,25 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci, page_frame_number; edac_mc_scrub_block(remapped_page, offset_in_page, - mci->csrows[row].grain); + mci->csrows[row].grain); } } +EXPORT_SYMBOL_GPL(edac_mc_handle_ce); - -EXPORT_SYMBOL(edac_mc_handle_ce_no_info); - -void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, - const char *msg) +void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, const char *msg) { if (log_ce) - printk(KERN_WARNING - "EDAC MC%d: CE - no information available: %s\n", - mci->mc_idx, msg); + edac_mc_printk(mci, KERN_WARNING, + "CE - no information available: %s\n", msg); + mci->ce_noinfo_count++; mci->ce_count++; } - - -EXPORT_SYMBOL(edac_mc_handle_ue); +EXPORT_SYMBOL_GPL(edac_mc_handle_ce_no_info); void edac_mc_handle_ue(struct mem_ctl_info *mci, - unsigned long page_frame_number, - unsigned long offset_in_page, int row, - const char *msg) + unsigned long page_frame_number, unsigned long offset_in_page, + int row, const char *msg) { int len = EDAC_MC_LABEL_LEN * 4; char labels[len + 1]; @@ -1729,65 +1683,61 @@ void edac_mc_handle_ue(struct mem_ctl_info *mci, int chan; int chars; - debugf3("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf3("MC%d: %s()\n", mci->mc_idx, __func__); /* FIXME - maybe make panic on INTERNAL ERROR an option */ if (row >= mci->nr_csrows || row < 0) { /* something is wrong */ - printk(KERN_ERR - "EDAC MC%d: INTERNAL ERROR: row out of range (%d >= %d)\n", - mci->mc_idx, row, mci->nr_csrows); + edac_mc_printk(mci, KERN_ERR, + "INTERNAL ERROR: row out of range " + "(%d >= %d)\n", row, mci->nr_csrows); edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR"); return; } chars = snprintf(pos, len + 1, "%s", - mci->csrows[row].channels[0].label); + mci->csrows[row].channels[0].label); len -= chars; pos += chars; + for (chan = 1; (chan < mci->csrows[row].nr_channels) && (len > 0); chan++) { chars = snprintf(pos, len + 1, ":%s", - mci->csrows[row].channels[chan].label); + mci->csrows[row].channels[chan].label); len -= chars; pos += chars; } if (log_ue) - printk(KERN_EMERG - "EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, row %d," - " labels \"%s\": %s\n", mci->mc_idx, - page_frame_number, offset_in_page, - mci->csrows[row].grain, row, labels, msg); + edac_mc_printk(mci, KERN_EMERG, + "UE page 0x%lx, offset 0x%lx, grain %d, row %d, " + "labels \"%s\": %s\n", page_frame_number, + offset_in_page, mci->csrows[row].grain, row, labels, + msg); if (panic_on_ue) - panic - ("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, row %d," - " labels \"%s\": %s\n", mci->mc_idx, - page_frame_number, offset_in_page, - mci->csrows[row].grain, row, labels, msg); + panic("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, " + "row %d, labels \"%s\": %s\n", mci->mc_idx, + page_frame_number, offset_in_page, + mci->csrows[row].grain, row, labels, msg); mci->ue_count++; mci->csrows[row].ue_count++; } +EXPORT_SYMBOL_GPL(edac_mc_handle_ue); - -EXPORT_SYMBOL(edac_mc_handle_ue_no_info); - -void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, - const char *msg) +void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg) { if (panic_on_ue) panic("EDAC MC%d: Uncorrected Error", mci->mc_idx); if (log_ue) - printk(KERN_WARNING - "EDAC MC%d: UE - no information available: %s\n", - mci->mc_idx, msg); + edac_mc_printk(mci, KERN_WARNING, + "UE - no information available: %s\n", msg); mci->ue_noinfo_count++; mci->ue_count++; } - +EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info); #ifdef CONFIG_PCI @@ -1799,18 +1749,22 @@ static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) where = secondary ? PCI_SEC_STATUS : PCI_STATUS; pci_read_config_word(dev, where, &status); - /* If we get back 0xFFFF then we must suspect that the card has been pulled but - the Linux PCI layer has not yet finished cleaning up. We don't want to report - on such devices */ + /* If we get back 0xFFFF then we must suspect that the card has been + * pulled but the Linux PCI layer has not yet finished cleaning up. + * We don't want to report on such devices + */ if (status == 0xFFFF) { u32 sanity; + pci_read_config_dword(dev, 0, &sanity); + if (sanity == 0xFFFFFFFF) return 0; } + status &= PCI_STATUS_DETECTED_PARITY | PCI_STATUS_SIG_SYSTEM_ERROR | - PCI_STATUS_PARITY; + PCI_STATUS_PARITY; if (status) /* reset only the bits we are interested in */ @@ -1822,7 +1776,7 @@ static u16 get_pci_parity_status(struct pci_dev *dev, int secondary) typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); /* Clear any PCI parity errors logged by this device. */ -static void edac_pci_dev_parity_clear( struct pci_dev *dev ) +static void edac_pci_dev_parity_clear(struct pci_dev *dev) { u8 header_type; @@ -1853,25 +1807,22 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) /* check the status reg for errors */ if (status) { if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) - printk(KERN_CRIT - "EDAC PCI- " + edac_printk(KERN_CRIT, EDAC_PCI, "Signaled System Error on %s\n", - pci_name (dev)); + pci_name(dev)); if (status & (PCI_STATUS_PARITY)) { - printk(KERN_CRIT - "EDAC PCI- " + edac_printk(KERN_CRIT, EDAC_PCI, "Master Data Parity Error on %s\n", - pci_name (dev)); + pci_name(dev)); atomic_inc(&pci_parity_count); } if (status & (PCI_STATUS_DETECTED_PARITY)) { - printk(KERN_CRIT - "EDAC PCI- " + edac_printk(KERN_CRIT, EDAC_PCI, "Detected Parity Error on %s\n", - pci_name (dev)); + pci_name(dev)); atomic_inc(&pci_parity_count); } @@ -1892,25 +1843,22 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) /* check the secondary status reg for errors */ if (status) { if (status & (PCI_STATUS_SIG_SYSTEM_ERROR)) - printk(KERN_CRIT - "EDAC PCI-Bridge- " + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " "Signaled System Error on %s\n", - pci_name (dev)); + pci_name(dev)); if (status & (PCI_STATUS_PARITY)) { - printk(KERN_CRIT - "EDAC PCI-Bridge- " - "Master Data Parity Error on %s\n", - pci_name (dev)); + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " + "Master Data Parity Error on " + "%s\n", pci_name(dev)); atomic_inc(&pci_parity_count); } if (status & (PCI_STATUS_DETECTED_PARITY)) { - printk(KERN_CRIT - "EDAC PCI-Bridge- " + edac_printk(KERN_CRIT, EDAC_PCI, "Bridge " "Detected Parity Error on %s\n", - pci_name (dev)); + pci_name(dev)); atomic_inc(&pci_parity_count); } @@ -1929,58 +1877,55 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) * Returns: 0 not found * 1 found on list */ -static int check_dev_on_list(struct edac_pci_device_list *list, int free_index, - struct pci_dev *dev) -{ - int i; - int rc = 0; /* Assume not found */ - unsigned short vendor=dev->vendor; - unsigned short device=dev->device; - - /* Scan the list, looking for a vendor/device match - */ - for (i = 0; i < free_index; i++, list++ ) { - if ( (list->vendor == vendor ) && - (list->device == device )) { - rc = 1; - break; - } - } +static int check_dev_on_list(struct edac_pci_device_list *list, + int free_index, struct pci_dev *dev) +{ + int i; + int rc = 0; /* Assume not found */ + unsigned short vendor=dev->vendor; + unsigned short device=dev->device; + + /* Scan the list, looking for a vendor/device match */ + for (i = 0; i < free_index; i++, list++ ) { + if ((list->vendor == vendor ) && (list->device == device )) { + rc = 1; + break; + } + } - return rc; + return rc; } /* * pci_dev parity list iterator - * Scan the PCI device list for one iteration, looking for SERRORs + * Scan the PCI device list for one iteration, looking for SERRORs * Master Parity ERRORS or Parity ERRORs on primary or secondary devices */ static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) { - struct pci_dev *dev=NULL; + struct pci_dev *dev = NULL; /* request for kernel access to the next PCI device, if any, * and while we are looking at it have its reference count * bumped until we are done with it */ while((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { - - /* if whitelist exists then it has priority, so only scan those - * devices on the whitelist - */ - if (pci_whitelist_count > 0 ) { - if (check_dev_on_list(pci_whitelist, + /* if whitelist exists then it has priority, so only scan + * those devices on the whitelist + */ + if (pci_whitelist_count > 0 ) { + if (check_dev_on_list(pci_whitelist, pci_whitelist_count, dev)) fn(dev); - } else { + } else { /* * if no whitelist, then check if this devices is * blacklisted */ - if (!check_dev_on_list(pci_blacklist, + if (!check_dev_on_list(pci_blacklist, pci_blacklist_count, dev)) fn(dev); - } + } } } @@ -1989,7 +1934,7 @@ static void do_pci_parity_check(void) unsigned long flags; int before_count; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); if (!check_pci_parity) return; @@ -2011,7 +1956,6 @@ static void do_pci_parity_check(void) } } - static inline void clear_pci_parity_errors(void) { /* Clear any PCI bus parity errors that devices initially have logged @@ -2020,37 +1964,30 @@ static inline void clear_pci_parity_errors(void) edac_pci_dev_parity_iterator(edac_pci_dev_parity_clear); } - #else /* CONFIG_PCI */ - static inline void do_pci_parity_check(void) { /* no-op */ } - static inline void clear_pci_parity_errors(void) { /* no-op */ } - #endif /* CONFIG_PCI */ /* * Iterate over all MC instances and check for ECC, et al, errors */ -static inline void check_mc_devices (void) +static inline void check_mc_devices(void) { - unsigned long flags; struct list_head *item; struct mem_ctl_info *mci; - debugf3("MC: " __FILE__ ": %s()\n", __func__); - - /* during poll, have interrupts off */ - local_irq_save(flags); + debugf3("%s()\n", __func__); + down(&mem_ctls_mutex); list_for_each(item, &mc_devices) { mci = list_entry(item, struct mem_ctl_info, link); @@ -2059,10 +1996,9 @@ static inline void check_mc_devices (void) mci->edac_check(mci); } - local_irq_restore(flags); + up(&mem_ctls_mutex); } - /* * Check MC status every poll_msec. * Check PCI status every poll_msec as well. @@ -2073,70 +2009,21 @@ static inline void check_mc_devices (void) */ static void do_edac_check(void) { - - debugf3("MC: " __FILE__ ": %s()\n", __func__); - + debugf3("%s()\n", __func__); check_mc_devices(); - do_pci_parity_check(); } - -/* - * EDAC thread state information - */ -struct bs_thread_info -{ - struct task_struct *task; - struct completion *event; - char *name; - void (*run)(void); -}; - -static struct bs_thread_info bs_thread; - -/* - * edac_kernel_thread - * This the kernel thread that processes edac operations - * in a normal thread environment - */ static int edac_kernel_thread(void *arg) { - struct bs_thread_info *thread = (struct bs_thread_info *) arg; - - /* detach thread */ - daemonize(thread->name); - - current->exit_signal = SIGCHLD; - allow_signal(SIGKILL); - thread->task = current; - - /* indicate to starting task we have started */ - complete(thread->event); - - /* loop forever, until we are told to stop */ - while(thread->run != NULL) { - void (*run)(void); - - /* call the function to check the memory controllers */ - run = thread->run; - if (run) - run(); - - if (signal_pending(current)) - flush_signals(current); - - /* ensure we are interruptable */ - set_current_state(TASK_INTERRUPTIBLE); + while (!kthread_should_stop()) { + do_edac_check(); /* goto sleep for the interval */ - schedule_timeout((HZ * poll_msec) / 1000); + schedule_timeout_interruptible((HZ * poll_msec) / 1000); try_to_freeze(); } - /* notify waiter that we are exiting */ - complete(thread->event); - return 0; } @@ -2146,10 +2033,7 @@ static int edac_kernel_thread(void *arg) */ static int __init edac_mc_init(void) { - int ret; - struct completion event; - - printk(KERN_INFO "MC: " __FILE__ " version " EDAC_MC_VERSION "\n"); + edac_printk(KERN_INFO, EDAC_MC, EDAC_MC_VERSION "\n"); /* * Harvest and clear any boot/initialization PCI parity errors @@ -2160,80 +2044,54 @@ static int __init edac_mc_init(void) */ clear_pci_parity_errors(); - /* perform check for first time to harvest boot leftovers */ - do_edac_check(); - - /* Create the MC sysfs entires */ + /* Create the MC sysfs entries */ if (edac_sysfs_memctrl_setup()) { - printk(KERN_ERR "EDAC MC: Error initializing sysfs code\n"); + edac_printk(KERN_ERR, EDAC_MC, + "Error initializing sysfs code\n"); return -ENODEV; } /* Create the PCI parity sysfs entries */ if (edac_sysfs_pci_setup()) { edac_sysfs_memctrl_teardown(); - printk(KERN_ERR "EDAC PCI: Error initializing sysfs code\n"); + edac_printk(KERN_ERR, EDAC_MC, + "EDAC PCI: Error initializing sysfs code\n"); return -ENODEV; } - /* Create our kernel thread */ - init_completion(&event); - bs_thread.event = &event; - bs_thread.name = "kedac"; - bs_thread.run = do_edac_check; - /* create our kernel thread */ - ret = kernel_thread(edac_kernel_thread, &bs_thread, CLONE_KERNEL); - if (ret < 0) { + edac_thread = kthread_run(edac_kernel_thread, NULL, "kedac"); + + if (IS_ERR(edac_thread)) { /* remove the sysfs entries */ edac_sysfs_memctrl_teardown(); edac_sysfs_pci_teardown(); - return -ENOMEM; + return PTR_ERR(edac_thread); } - /* wait for our kernel theard ack that it is up and running */ - wait_for_completion(&event); - return 0; } - /* * edac_mc_exit() * module exit/termination functioni */ static void __exit edac_mc_exit(void) { - struct completion event; - - debugf0("MC: " __FILE__ ": %s()\n", __func__); - - init_completion(&event); - bs_thread.event = &event; - - /* As soon as ->run is set to NULL, the task could disappear, - * so we need to hold tasklist_lock until we have sent the signal - */ - read_lock(&tasklist_lock); - bs_thread.run = NULL; - send_sig(SIGKILL, bs_thread.task, 1); - read_unlock(&tasklist_lock); - wait_for_completion(&event); + debugf0("%s()\n", __func__); + kthread_stop(edac_thread); /* tear down the sysfs device */ edac_sysfs_memctrl_teardown(); edac_sysfs_pci_teardown(); } - - - module_init(edac_mc_init); module_exit(edac_mc_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n" - "Based on.work by Dan Hollis et al"); + "Based on work by Dan Hollis et al"); MODULE_DESCRIPTION("Core library routines for MC reporting"); module_param(panic_on_ue, int, 0644); diff --git a/drivers/edac/edac_mc.h b/drivers/edac/edac_mc.h index 75ecf484a43..8d9e83909b9 100644 --- a/drivers/edac/edac_mc.h +++ b/drivers/edac/edac_mc.h @@ -15,11 +15,9 @@ * */ - #ifndef _EDAC_MC_H_ #define _EDAC_MC_H_ - #include <linux/config.h> #include <linux/kernel.h> #include <linux/types.h> @@ -33,7 +31,6 @@ #include <linux/completion.h> #include <linux/kobject.h> - #define EDAC_MC_LABEL_LEN 31 #define MC_PROC_NAME_MAX_LEN 7 @@ -43,31 +40,53 @@ #define PAGES_TO_MiB( pages ) ( ( pages ) << ( PAGE_SHIFT - 20 ) ) #endif +#define edac_printk(level, prefix, fmt, arg...) \ + printk(level "EDAC " prefix ": " fmt, ##arg) + +#define edac_mc_printk(mci, level, fmt, arg...) \ + printk(level "EDAC MC%d: " fmt, mci->mc_idx, ##arg) + +#define edac_mc_chipset_printk(mci, level, prefix, fmt, arg...) \ + printk(level "EDAC " prefix " MC%d: " fmt, mci->mc_idx, ##arg) + +/* prefixes for edac_printk() and edac_mc_printk() */ +#define EDAC_MC "MC" +#define EDAC_PCI "PCI" +#define EDAC_DEBUG "DEBUG" + #ifdef CONFIG_EDAC_DEBUG extern int edac_debug_level; -#define edac_debug_printk(level, fmt, args...) \ -do { if (level <= edac_debug_level) printk(KERN_DEBUG fmt, ##args); } while(0) + +#define edac_debug_printk(level, fmt, arg...) \ + do { \ + if (level <= edac_debug_level) \ + edac_printk(KERN_DEBUG, EDAC_DEBUG, fmt, ##arg); \ + } while(0) + #define debugf0( ... ) edac_debug_printk(0, __VA_ARGS__ ) #define debugf1( ... ) edac_debug_printk(1, __VA_ARGS__ ) #define debugf2( ... ) edac_debug_printk(2, __VA_ARGS__ ) #define debugf3( ... ) edac_debug_printk(3, __VA_ARGS__ ) #define debugf4( ... ) edac_debug_printk(4, __VA_ARGS__ ) -#else /* !CONFIG_EDAC_DEBUG */ + +#else /* !CONFIG_EDAC_DEBUG */ + #define debugf0( ... ) #define debugf1( ... ) #define debugf2( ... ) #define debugf3( ... ) #define debugf4( ... ) -#endif /* !CONFIG_EDAC_DEBUG */ +#endif /* !CONFIG_EDAC_DEBUG */ -#define bs_xstr(s) bs_str(s) -#define bs_str(s) #s -#define BS_MOD_STR bs_xstr(KBUILD_BASENAME) +#define edac_xstr(s) edac_str(s) +#define edac_str(s) #s +#define EDAC_MOD_STR edac_xstr(KBUILD_BASENAME) #define BIT(x) (1 << (x)) -#define PCI_VEND_DEV(vend, dev) PCI_VENDOR_ID_ ## vend, PCI_DEVICE_ID_ ## vend ## _ ## dev +#define PCI_VEND_DEV(vend, dev) PCI_VENDOR_ID_ ## vend, \ + PCI_DEVICE_ID_ ## vend ## _ ## dev /* memory devices */ enum dev_type { @@ -117,7 +136,6 @@ enum mem_type { #define MEM_FLAG_RDDR BIT(MEM_RDDR) #define MEM_FLAG_RMBS BIT(MEM_RMBS) - /* chipset Error Detection and Correction capabilities and mode */ enum edac_type { EDAC_UNKNOWN = 0, /* Unknown if ECC is available */ @@ -142,7 +160,6 @@ enum edac_type { #define EDAC_FLAG_S8ECD8ED BIT(EDAC_S8ECD8ED) #define EDAC_FLAG_S16ECD16ED BIT(EDAC_S16ECD16ED) - /* scrubbing capabilities */ enum scrub_type { SCRUB_UNKNOWN = 0, /* Unknown if scrubber is available */ @@ -166,11 +183,6 @@ enum scrub_type { #define SCRUB_FLAG_HW_PROG_SRC BIT(SCRUB_HW_PROG_SRC_CORR) #define SCRUB_FLAG_HW_TUN BIT(SCRUB_HW_TUNABLE) -enum mci_sysfs_status { - MCI_SYSFS_INACTIVE = 0, /* sysfs entries NOT registered */ - MCI_SYSFS_ACTIVE /* sysfs entries ARE registered */ -}; - /* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */ /* @@ -255,20 +267,19 @@ enum mci_sysfs_status { * PS - I enjoyed writing all that about as much as you enjoyed reading it. */ - struct channel_info { int chan_idx; /* channel index */ u32 ce_count; /* Correctable Errors for this CHANNEL */ - char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */ + char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */ struct csrow_info *csrow; /* the parent */ }; - struct csrow_info { unsigned long first_page; /* first page number in dimm */ unsigned long last_page; /* last page number in dimm */ unsigned long page_mask; /* used for interleaving - - 0UL for non intlv */ + * 0UL for non intlv + */ u32 nr_pages; /* number of pages in csrow */ u32 grain; /* granularity of reported error in bytes */ int csrow_idx; /* the chip-select row */ @@ -280,29 +291,28 @@ struct csrow_info { struct mem_ctl_info *mci; /* the parent */ struct kobject kobj; /* sysfs kobject for this csrow */ + struct completion kobj_complete; /* FIXME the number of CHANNELs might need to become dynamic */ u32 nr_channels; struct channel_info *channels; }; - struct mem_ctl_info { struct list_head link; /* for global list of mem_ctl_info structs */ unsigned long mtype_cap; /* memory types supported by mc */ unsigned long edac_ctl_cap; /* Mem controller EDAC capabilities */ unsigned long edac_cap; /* configuration capabilities - this is - closely related to edac_ctl_cap. The - difference is that the controller - may be capable of s4ecd4ed which would - be listed in edac_ctl_cap, but if - channels aren't capable of s4ecd4ed then the - edac_cap would not have that capability. */ + * closely related to edac_ctl_cap. The + * difference is that the controller may be + * capable of s4ecd4ed which would be listed + * in edac_ctl_cap, but if channels aren't + * capable of s4ecd4ed then the edac_cap would + * not have that capability. + */ unsigned long scrub_cap; /* chipset scrub capabilities */ enum scrub_type scrub_mode; /* current scrub mode */ - enum mci_sysfs_status sysfs_active; /* status of sysfs */ - /* pointer to edac checking routine */ void (*edac_check) (struct mem_ctl_info * mci); /* @@ -311,7 +321,7 @@ struct mem_ctl_info { */ /* FIXME - why not send the phys page to begin with? */ unsigned long (*ctl_page_to_phys) (struct mem_ctl_info * mci, - unsigned long page); + unsigned long page); int mc_idx; int nr_csrows; struct csrow_info *csrows; @@ -340,72 +350,69 @@ struct mem_ctl_info { /* edac sysfs device control */ struct kobject edac_mci_kobj; + struct completion kobj_complete; }; - - /* write all or some bits in a byte-register*/ -static inline void pci_write_bits8(struct pci_dev *pdev, int offset, - u8 value, u8 mask) +static inline void pci_write_bits8(struct pci_dev *pdev, int offset, u8 value, + u8 mask) { if (mask != 0xff) { u8 buf; + pci_read_config_byte(pdev, offset, &buf); value &= mask; buf &= ~mask; value |= buf; } + pci_write_config_byte(pdev, offset, value); } - /* write all or some bits in a word-register*/ static inline void pci_write_bits16(struct pci_dev *pdev, int offset, - u16 value, u16 mask) + u16 value, u16 mask) { if (mask != 0xffff) { u16 buf; + pci_read_config_word(pdev, offset, &buf); value &= mask; buf &= ~mask; value |= buf; } + pci_write_config_word(pdev, offset, value); } - /* write all or some bits in a dword-register*/ static inline void pci_write_bits32(struct pci_dev *pdev, int offset, - u32 value, u32 mask) + u32 value, u32 mask) { if (mask != 0xffff) { u32 buf; + pci_read_config_dword(pdev, offset, &buf); value &= mask; buf &= ~mask; value |= buf; } + pci_write_config_dword(pdev, offset, value); } - #ifdef CONFIG_EDAC_DEBUG void edac_mc_dump_channel(struct channel_info *chan); void edac_mc_dump_mci(struct mem_ctl_info *mci); void edac_mc_dump_csrow(struct csrow_info *csrow); -#endif /* CONFIG_EDAC_DEBUG */ +#endif /* CONFIG_EDAC_DEBUG */ extern int edac_mc_add_mc(struct mem_ctl_info *mci); -extern int edac_mc_del_mc(struct mem_ctl_info *mci); - +extern struct mem_ctl_info * edac_mc_del_mc(struct pci_dev *pdev); extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, - unsigned long page); - -extern struct mem_ctl_info *edac_mc_find_mci_by_pdev(struct pci_dev - *pdev); - -extern void edac_mc_scrub_block(unsigned long page, - unsigned long offset, u32 size); + unsigned long page); +extern void edac_mc_scrub_block(unsigned long page, unsigned long offset, + u32 size); /* * The no info errors are used when error overflows are reported. @@ -418,31 +425,25 @@ extern void edac_mc_scrub_block(unsigned long page, * statement clutter and extra function arguments. */ extern void edac_mc_handle_ce(struct mem_ctl_info *mci, - unsigned long page_frame_number, - unsigned long offset_in_page, - unsigned long syndrome, - int row, int channel, const char *msg); - + unsigned long page_frame_number, unsigned long offset_in_page, + unsigned long syndrome, int row, int channel, + const char *msg); extern void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, - const char *msg); - + const char *msg); extern void edac_mc_handle_ue(struct mem_ctl_info *mci, - unsigned long page_frame_number, - unsigned long offset_in_page, - int row, const char *msg); - + unsigned long page_frame_number, unsigned long offset_in_page, + int row, const char *msg); extern void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, - const char *msg); + const char *msg); /* * This kmalloc's and initializes all the structures. * Can't be used if all structures don't have the same lifetime. */ -extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, - unsigned nr_csrows, unsigned nr_chans); +extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows, + unsigned nr_chans); /* Free an mc previously allocated by edac_mc_alloc() */ extern void edac_mc_free(struct mem_ctl_info *mci); - #endif /* _EDAC_MC_H_ */ diff --git a/drivers/edac/i82860_edac.c b/drivers/edac/i82860_edac.c index 52596e75f9c..fd342163cf9 100644 --- a/drivers/edac/i82860_edac.c +++ b/drivers/edac/i82860_edac.c @@ -9,7 +9,6 @@ * by Thayne Harbaugh of Linux Networx. (http://lnxi.com) */ - #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> @@ -18,6 +17,11 @@ #include <linux/slab.h> #include "edac_mc.h" +#define i82860_printk(level, fmt, arg...) \ + edac_printk(level, "i82860", fmt, ##arg) + +#define i82860_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "i82860", fmt, ##arg) #ifndef PCI_DEVICE_ID_INTEL_82860_0 #define PCI_DEVICE_ID_INTEL_82860_0 0x2531 @@ -48,15 +52,15 @@ struct i82860_error_info { static const struct i82860_dev_info i82860_devs[] = { [I82860] = { - .ctl_name = "i82860"}, + .ctl_name = "i82860" + }, }; static struct pci_dev *mci_pdev = NULL; /* init dev: in case that AGP code - has already registered driver */ + * has already registered driver + */ -static int i82860_registered = 1; - -static void i82860_get_error_info (struct mem_ctl_info *mci, +static void i82860_get_error_info(struct mem_ctl_info *mci, struct i82860_error_info *info) { /* @@ -78,14 +82,15 @@ static void i82860_get_error_info (struct mem_ctl_info *mci, */ if (!(info->errsts2 & 0x0003)) return; + if ((info->errsts ^ info->errsts2) & 0x0003) { pci_read_config_dword(mci->pdev, I82860_EAP, &info->eap); pci_read_config_word(mci->pdev, I82860_DERRCTL_STS, - &info->derrsyn); + &info->derrsyn); } } -static int i82860_process_error_info (struct mem_ctl_info *mci, +static int i82860_process_error_info(struct mem_ctl_info *mci, struct i82860_error_info *info, int handle_errors) { int row; @@ -107,8 +112,8 @@ static int i82860_process_error_info (struct mem_ctl_info *mci, if (info->errsts & 0x0002) edac_mc_handle_ue(mci, info->eap, 0, row, "i82860 UE"); else - edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row, - 0, "i82860 UE"); + edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row, 0, + "i82860 UE"); return 1; } @@ -117,7 +122,7 @@ static void i82860_check(struct mem_ctl_info *mci) { struct i82860_error_info info; - debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf1("MC%d: %s()\n", mci->mc_idx, __func__); i82860_get_error_info(mci, &info); i82860_process_error_info(mci, &info, 1); } @@ -128,6 +133,7 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx) int index; struct mem_ctl_info *mci = NULL; unsigned long last_cumul_size; + struct i82860_error_info discard; u16 mchcfg_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ @@ -140,21 +146,20 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx) going to make 1 channel for group. */ mci = edac_mc_alloc(0, 16, 1); + if (!mci) return -ENOMEM; - debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__); - + debugf3("%s(): init mci\n", __func__); mci->pdev = pdev; mci->mtype_cap = MEM_FLAG_DDR; - mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; /* I"m not sure about this but I think that all RDRAM is SECDED */ mci->edac_cap = EDAC_FLAG_SECDED; /* adjust FLAGS */ - mci->mod_name = BS_MOD_STR; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.1.2.6 $"; mci->ctl_name = i82860_devs[dev_idx].ctl_name; mci->edac_check = i82860_check; @@ -175,12 +180,13 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx) struct csrow_info *csrow = &mci->csrows[index]; pci_read_config_word(mci->pdev, I82860_GBA + index * 2, - &value); + &value); cumul_size = (value & I82860_GBA_MASK) << (I82860_GBA_SHIFT - PAGE_SHIFT); - debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n", - __func__, index, cumul_size); + debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, + cumul_size); + if (cumul_size == last_cumul_size) continue; /* not populated */ @@ -188,42 +194,43 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx) csrow->last_page = cumul_size - 1; csrow->nr_pages = cumul_size - last_cumul_size; last_cumul_size = cumul_size; - csrow->grain = 1 << 12; /* I82860_EAP has 4KiB reolution */ + csrow->grain = 1 << 12; /* I82860_EAP has 4KiB reolution */ csrow->mtype = MEM_RMBS; csrow->dtype = DEV_UNKNOWN; csrow->edac_mode = mchcfg_ddim ? EDAC_SECDED : EDAC_NONE; } - /* clear counters */ - pci_write_bits16(mci->pdev, I82860_ERRSTS, 0x0003, 0x0003); + i82860_get_error_info(mci, &discard); /* clear counters */ if (edac_mc_add_mc(mci)) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", - __func__); + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); edac_mc_free(mci); } else { /* get this far and it's successful */ - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); rc = 0; } + return rc; } /* returns count (>= 0), or negative on error */ static int __devinit i82860_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { int rc; - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); + i82860_printk(KERN_INFO, "i82860 init one\n"); - printk(KERN_INFO "i82860 init one\n"); - if(pci_enable_device(pdev) < 0) + if (pci_enable_device(pdev) < 0) return -EIO; + rc = i82860_probe1(pdev, ent->driver_data); - if(rc == 0) + + if (rc == 0) mci_pdev = pci_dev_get(pdev); + return rc; } @@ -231,23 +238,28 @@ static void __devexit i82860_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; - debugf0(__FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); - mci = edac_mc_find_mci_by_pdev(pdev); - if ((mci != NULL) && (edac_mc_del_mc(mci) == 0)) - edac_mc_free(mci); + if ((mci = edac_mc_del_mc(pdev)) == NULL) + return; + + edac_mc_free(mci); } static const struct pci_device_id i82860_pci_tbl[] __devinitdata = { - {PCI_VEND_DEV(INTEL, 82860_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - I82860}, - {0,} /* 0 terminated list. */ + { + PCI_VEND_DEV(INTEL, 82860_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + I82860 + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, i82860_pci_tbl); static struct pci_driver i82860_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = i82860_init_one, .remove = __devexit_p(i82860_remove_one), .id_table = i82860_pci_tbl, @@ -257,43 +269,56 @@ static int __init i82860_init(void) { int pci_rc; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); + if ((pci_rc = pci_register_driver(&i82860_driver)) < 0) - return pci_rc; + goto fail0; if (!mci_pdev) { - i82860_registered = 0; mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_82860_0, NULL); + PCI_DEVICE_ID_INTEL_82860_0, NULL); + if (mci_pdev == NULL) { debugf0("860 pci_get_device fail\n"); - return -ENODEV; + pci_rc = -ENODEV; + goto fail1; } + pci_rc = i82860_init_one(mci_pdev, i82860_pci_tbl); + if (pci_rc < 0) { debugf0("860 init fail\n"); - pci_dev_put(mci_pdev); - return -ENODEV; + pci_rc = -ENODEV; + goto fail1; } } + return 0; + +fail1: + pci_unregister_driver(&i82860_driver); + +fail0: + if (mci_pdev != NULL) + pci_dev_put(mci_pdev); + + return pci_rc; } static void __exit i82860_exit(void) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); pci_unregister_driver(&i82860_driver); - if (!i82860_registered) { - i82860_remove_one(mci_pdev); + + if (mci_pdev != NULL) pci_dev_put(mci_pdev); - } } module_init(i82860_init); module_exit(i82860_exit); MODULE_LICENSE("GPL"); -MODULE_AUTHOR - ("Red Hat Inc. (http://www.redhat.com.com) Ben Woodard <woodard@redhat.com>"); +MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com) " + "Ben Woodard <woodard@redhat.com>"); MODULE_DESCRIPTION("ECC support for Intel 82860 memory hub controllers"); diff --git a/drivers/edac/i82875p_edac.c b/drivers/edac/i82875p_edac.c index 1991f94af75..0aec92698f1 100644 --- a/drivers/edac/i82875p_edac.c +++ b/drivers/edac/i82875p_edac.c @@ -13,18 +13,19 @@ * Note: E7210 appears same as D82875P - zhenyu.z.wang at intel.com */ - #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> - #include <linux/pci.h> #include <linux/pci_ids.h> - #include <linux/slab.h> - #include "edac_mc.h" +#define i82875p_printk(level, fmt, arg...) \ + edac_printk(level, "i82875p", fmt, ##arg) + +#define i82875p_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "i82875p", fmt, ##arg) #ifndef PCI_DEVICE_ID_INTEL_82875_0 #define PCI_DEVICE_ID_INTEL_82875_0 0x2578 @@ -34,11 +35,9 @@ #define PCI_DEVICE_ID_INTEL_82875_6 0x257e #endif /* PCI_DEVICE_ID_INTEL_82875_6 */ - /* four csrows in dual channel, eight in single channel */ #define I82875P_NR_CSROWS(nr_chans) (8/(nr_chans)) - /* Intel 82875p register addresses - device 0 function 0 - DRAM Controller */ #define I82875P_EAP 0x58 /* Error Address Pointer (32b) * @@ -87,7 +86,6 @@ * 0 reserved */ - /* Intel 82875p register addresses - device 6 function 0 - DRAM Controller */ #define I82875P_PCICMD6 0x04 /* PCI Command Register (16b) * @@ -151,23 +149,19 @@ * 1:0 DRAM type 01=DDR */ - enum i82875p_chips { I82875P = 0, }; - struct i82875p_pvt { struct pci_dev *ovrfl_pdev; void __iomem *ovrfl_window; }; - struct i82875p_dev_info { const char *ctl_name; }; - struct i82875p_error_info { u16 errsts; u32 eap; @@ -176,17 +170,19 @@ struct i82875p_error_info { u16 errsts2; }; - static const struct i82875p_dev_info i82875p_devs[] = { [I82875P] = { - .ctl_name = "i82875p"}, + .ctl_name = "i82875p" + }, }; -static struct pci_dev *mci_pdev = NULL; /* init dev: in case that AGP code - has already registered driver */ +static struct pci_dev *mci_pdev = NULL; /* init dev: in case that AGP code has + * already registered driver + */ + static int i82875p_registered = 1; -static void i82875p_get_error_info (struct mem_ctl_info *mci, +static void i82875p_get_error_info(struct mem_ctl_info *mci, struct i82875p_error_info *info) { /* @@ -210,15 +206,16 @@ static void i82875p_get_error_info (struct mem_ctl_info *mci, */ if (!(info->errsts2 & 0x0081)) return; + if ((info->errsts ^ info->errsts2) & 0x0081) { pci_read_config_dword(mci->pdev, I82875P_EAP, &info->eap); pci_read_config_byte(mci->pdev, I82875P_DES, &info->des); pci_read_config_byte(mci->pdev, I82875P_DERRSYN, - &info->derrsyn); + &info->derrsyn); } } -static int i82875p_process_error_info (struct mem_ctl_info *mci, +static int i82875p_process_error_info(struct mem_ctl_info *mci, struct i82875p_error_info *info, int handle_errors) { int row, multi_chan; @@ -243,23 +240,21 @@ static int i82875p_process_error_info (struct mem_ctl_info *mci, edac_mc_handle_ue(mci, info->eap, 0, row, "i82875p UE"); else edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row, - multi_chan ? (info->des & 0x1) : 0, - "i82875p CE"); + multi_chan ? (info->des & 0x1) : 0, + "i82875p CE"); return 1; } - static void i82875p_check(struct mem_ctl_info *mci) { struct i82875p_error_info info; - debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf1("MC%d: %s()\n", mci->mc_idx, __func__); i82875p_get_error_info(mci, &info); i82875p_process_error_info(mci, &info, 1); } - #ifdef CONFIG_PROC_FS extern int pci_proc_attach_device(struct pci_dev *); #endif @@ -273,15 +268,14 @@ static int i82875p_probe1(struct pci_dev *pdev, int dev_idx) unsigned long last_cumul_size; struct pci_dev *ovrfl_pdev; void __iomem *ovrfl_window = NULL; - u32 drc; u32 drc_chan; /* Number of channels 0=1chan,1=2chan */ u32 nr_chans; u32 drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ + struct i82875p_error_info discard; - debugf0("MC: " __FILE__ ": %s()\n", __func__); - - ovrfl_pdev = pci_find_device(PCI_VEND_DEV(INTEL, 82875_6), NULL); + debugf0("%s()\n", __func__); + ovrfl_pdev = pci_get_device(PCI_VEND_DEV(INTEL, 82875_6), NULL); if (!ovrfl_pdev) { /* @@ -292,71 +286,69 @@ static int i82875p_probe1(struct pci_dev *pdev, int dev_idx) */ pci_write_bits8(pdev, 0xf4, 0x2, 0x2); ovrfl_pdev = - pci_scan_single_device(pdev->bus, PCI_DEVFN(6, 0)); + pci_scan_single_device(pdev->bus, PCI_DEVFN(6, 0)); + if (!ovrfl_pdev) - goto fail; + return -ENODEV; } + #ifdef CONFIG_PROC_FS if (!ovrfl_pdev->procent && pci_proc_attach_device(ovrfl_pdev)) { - printk(KERN_ERR "MC: " __FILE__ - ": %s(): Failed to attach overflow device\n", - __func__); - goto fail; + i82875p_printk(KERN_ERR, + "%s(): Failed to attach overflow device\n", __func__); + return -ENODEV; } -#endif /* CONFIG_PROC_FS */ +#endif + /* CONFIG_PROC_FS */ if (pci_enable_device(ovrfl_pdev)) { - printk(KERN_ERR "MC: " __FILE__ - ": %s(): Failed to enable overflow device\n", - __func__); - goto fail; + i82875p_printk(KERN_ERR, + "%s(): Failed to enable overflow device\n", __func__); + return -ENODEV; } if (pci_request_regions(ovrfl_pdev, pci_name(ovrfl_pdev))) { #ifdef CORRECT_BIOS - goto fail; + goto fail0; #endif } + /* cache is irrelevant for PCI bus reads/writes */ ovrfl_window = ioremap_nocache(pci_resource_start(ovrfl_pdev, 0), - pci_resource_len(ovrfl_pdev, 0)); + pci_resource_len(ovrfl_pdev, 0)); if (!ovrfl_window) { - printk(KERN_ERR "MC: " __FILE__ - ": %s(): Failed to ioremap bar6\n", __func__); - goto fail; + i82875p_printk(KERN_ERR, "%s(): Failed to ioremap bar6\n", + __func__); + goto fail1; } /* need to find out the number of channels */ drc = readl(ovrfl_window + I82875P_DRC); drc_chan = ((drc >> 21) & 0x1); nr_chans = drc_chan + 1; - drc_ddim = (drc >> 18) & 0x1; + drc_ddim = (drc >> 18) & 0x1; mci = edac_mc_alloc(sizeof(*pvt), I82875P_NR_CSROWS(nr_chans), - nr_chans); + nr_chans); if (!mci) { rc = -ENOMEM; - goto fail; + goto fail2; } - debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__); - + debugf3("%s(): init mci\n", __func__); mci->pdev = pdev; mci->mtype_cap = MEM_FLAG_DDR; - mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; mci->edac_cap = EDAC_FLAG_UNKNOWN; /* adjust FLAGS */ - mci->mod_name = BS_MOD_STR; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.5.2.11 $"; mci->ctl_name = i82875p_devs[dev_idx].ctl_name; mci->edac_check = i82875p_check; mci->ctl_page_to_phys = NULL; - - debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__); - + debugf3("%s(): init pvt\n", __func__); pvt = (struct i82875p_pvt *) mci->pvt_info; pvt->ovrfl_pdev = ovrfl_pdev; pvt->ovrfl_window = ovrfl_window; @@ -374,8 +366,9 @@ static int i82875p_probe1(struct pci_dev *pdev, int dev_idx) value = readb(ovrfl_window + I82875P_DRB + index); cumul_size = value << (I82875P_DRB_SHIFT - PAGE_SHIFT); - debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n", - __func__, index, cumul_size); + debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, + cumul_size); + if (cumul_size == last_cumul_size) continue; /* not populated */ @@ -383,71 +376,72 @@ static int i82875p_probe1(struct pci_dev *pdev, int dev_idx) csrow->last_page = cumul_size - 1; csrow->nr_pages = cumul_size - last_cumul_size; last_cumul_size = cumul_size; - csrow->grain = 1 << 12; /* I82875P_EAP has 4KiB reolution */ + csrow->grain = 1 << 12; /* I82875P_EAP has 4KiB reolution */ csrow->mtype = MEM_DDR; csrow->dtype = DEV_UNKNOWN; csrow->edac_mode = drc_ddim ? EDAC_SECDED : EDAC_NONE; } - /* clear counters */ - pci_write_bits16(mci->pdev, I82875P_ERRSTS, 0x0081, 0x0081); + i82875p_get_error_info(mci, &discard); /* clear counters */ if (edac_mc_add_mc(mci)) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", __func__); - goto fail; + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); + goto fail3; } /* get this far and it's successful */ - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); return 0; - fail: - if (mci) - edac_mc_free(mci); +fail3: + edac_mc_free(mci); - if (ovrfl_window) - iounmap(ovrfl_window); +fail2: + iounmap(ovrfl_window); - if (ovrfl_pdev) { - pci_release_regions(ovrfl_pdev); - pci_disable_device(ovrfl_pdev); - } +fail1: + pci_release_regions(ovrfl_pdev); +#ifdef CORRECT_BIOS +fail0: +#endif + pci_disable_device(ovrfl_pdev); /* NOTE: the ovrfl proc entry and pci_dev are intentionally left */ return rc; } - /* returns count (>= 0), or negative on error */ static int __devinit i82875p_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { int rc; - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); + i82875p_printk(KERN_INFO, "i82875p init one\n"); - printk(KERN_INFO "i82875p init one\n"); - if(pci_enable_device(pdev) < 0) + if (pci_enable_device(pdev) < 0) return -EIO; + rc = i82875p_probe1(pdev, ent->driver_data); + if (mci_pdev == NULL) mci_pdev = pci_dev_get(pdev); + return rc; } - static void __devexit i82875p_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; struct i82875p_pvt *pvt = NULL; - debugf0(__FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); - if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL) + if ((mci = edac_mc_del_mc(pdev)) == NULL) return; pvt = (struct i82875p_pvt *) mci->pvt_info; + if (pvt->ovrfl_window) iounmap(pvt->ovrfl_window); @@ -459,74 +453,84 @@ static void __devexit i82875p_remove_one(struct pci_dev *pdev) pci_dev_put(pvt->ovrfl_pdev); } - if (edac_mc_del_mc(mci)) - return; - edac_mc_free(mci); } - static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = { - {PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, - I82875P}, - {0,} /* 0 terminated list. */ + { + PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0, + I82875P + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, i82875p_pci_tbl); - static struct pci_driver i82875p_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = i82875p_init_one, .remove = __devexit_p(i82875p_remove_one), .id_table = i82875p_pci_tbl, }; - static int __init i82875p_init(void) { int pci_rc; - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); pci_rc = pci_register_driver(&i82875p_driver); + if (pci_rc < 0) - return pci_rc; + goto fail0; + if (mci_pdev == NULL) { - i82875p_registered = 0; - mci_pdev = - pci_get_device(PCI_VENDOR_ID_INTEL, - PCI_DEVICE_ID_INTEL_82875_0, NULL); + mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL, + PCI_DEVICE_ID_INTEL_82875_0, NULL); + if (!mci_pdev) { debugf0("875p pci_get_device fail\n"); - return -ENODEV; + pci_rc = -ENODEV; + goto fail1; } + pci_rc = i82875p_init_one(mci_pdev, i82875p_pci_tbl); + if (pci_rc < 0) { debugf0("875p init fail\n"); - pci_dev_put(mci_pdev); - return -ENODEV; + pci_rc = -ENODEV; + goto fail1; } } + return 0; -} +fail1: + pci_unregister_driver(&i82875p_driver); + +fail0: + if (mci_pdev != NULL) + pci_dev_put(mci_pdev); + + return pci_rc; +} static void __exit i82875p_exit(void) { - debugf3("MC: " __FILE__ ": %s()\n", __func__); + debugf3("%s()\n", __func__); pci_unregister_driver(&i82875p_driver); + if (!i82875p_registered) { i82875p_remove_one(mci_pdev); pci_dev_put(mci_pdev); } } - module_init(i82875p_init); module_exit(i82875p_exit); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh"); MODULE_DESCRIPTION("MC support for Intel 82875 memory hub controllers"); diff --git a/drivers/edac/r82600_edac.c b/drivers/edac/r82600_edac.c index e90892831b9..2c29fafe67c 100644 --- a/drivers/edac/r82600_edac.c +++ b/drivers/edac/r82600_edac.c @@ -18,14 +18,17 @@ #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> - #include <linux/pci.h> #include <linux/pci_ids.h> - #include <linux/slab.h> - #include "edac_mc.h" +#define r82600_printk(level, fmt, arg...) \ + edac_printk(level, "r82600", fmt, ##arg) + +#define r82600_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "r82600", fmt, ##arg) + /* Radisys say "The 82600 integrates a main memory SDRAM controller that * supports up to four banks of memory. The four banks can support a mix of * sizes of 64 bit wide (72 bits with ECC) Synchronous DRAM (SDRAM) DIMMs, @@ -126,10 +129,8 @@ struct r82600_error_info { u32 eapr; }; - static unsigned int disable_hardware_scrub = 0; - static void r82600_get_error_info (struct mem_ctl_info *mci, struct r82600_error_info *info) { @@ -138,17 +139,16 @@ static void r82600_get_error_info (struct mem_ctl_info *mci, if (info->eapr & BIT(0)) /* Clear error to allow next error to be reported [p.62] */ pci_write_bits32(mci->pdev, R82600_EAP, - ((u32) BIT(0) & (u32) BIT(1)), - ((u32) BIT(0) & (u32) BIT(1))); + ((u32) BIT(0) & (u32) BIT(1)), + ((u32) BIT(0) & (u32) BIT(1))); if (info->eapr & BIT(1)) /* Clear error to allow next error to be reported [p.62] */ pci_write_bits32(mci->pdev, R82600_EAP, - ((u32) BIT(0) & (u32) BIT(1)), - ((u32) BIT(0) & (u32) BIT(1))); + ((u32) BIT(0) & (u32) BIT(1)), + ((u32) BIT(0) & (u32) BIT(1))); } - static int r82600_process_error_info (struct mem_ctl_info *mci, struct r82600_error_info *info, int handle_errors) { @@ -167,26 +167,25 @@ static int r82600_process_error_info (struct mem_ctl_info *mci, * granularity (upper 19 bits only) */ page = eapaddr >> PAGE_SHIFT; - if (info->eapr & BIT(0)) { /* CE? */ + if (info->eapr & BIT(0)) { /* CE? */ error_found = 1; if (handle_errors) - edac_mc_handle_ce( - mci, page, 0, /* not avail */ - syndrome, - edac_mc_find_csrow_by_page(mci, page), - 0, /* channel */ - mci->ctl_name); + edac_mc_handle_ce(mci, page, 0, /* not avail */ + syndrome, + edac_mc_find_csrow_by_page(mci, page), + 0, /* channel */ + mci->ctl_name); } - if (info->eapr & BIT(1)) { /* UE? */ + if (info->eapr & BIT(1)) { /* UE? */ error_found = 1; if (handle_errors) /* 82600 doesn't give enough info */ edac_mc_handle_ue(mci, page, 0, - edac_mc_find_csrow_by_page(mci, page), - mci->ctl_name); + edac_mc_find_csrow_by_page(mci, page), + mci->ctl_name); } return error_found; @@ -196,7 +195,7 @@ static void r82600_check(struct mem_ctl_info *mci) { struct r82600_error_info info; - debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__); + debugf1("MC%d: %s()\n", mci->mc_idx, __func__); r82600_get_error_info(mci, &info); r82600_process_error_info(mci, &info, 1); } @@ -213,25 +212,18 @@ static int r82600_probe1(struct pci_dev *pdev, int dev_idx) u32 scrub_disabled; u32 sdram_refresh_rate; u32 row_high_limit_last = 0; - u32 eap_init_bits; - - debugf0("MC: " __FILE__ ": %s()\n", __func__); - + struct r82600_error_info discard; + debugf0("%s()\n", __func__); pci_read_config_byte(pdev, R82600_DRAMC, &dramcr); pci_read_config_dword(pdev, R82600_EAP, &eapr); - ecc_on = dramcr & BIT(5); reg_sdram = dramcr & BIT(4); scrub_disabled = eapr & BIT(31); sdram_refresh_rate = dramcr & (BIT(0) | BIT(1)); - - debugf2("MC: " __FILE__ ": %s(): sdram refresh rate = %#0x\n", - __func__, sdram_refresh_rate); - - debugf2("MC: " __FILE__ ": %s(): DRAMC register = %#0x\n", __func__, - dramcr); - + debugf2("%s(): sdram refresh rate = %#0x\n", __func__, + sdram_refresh_rate); + debugf2("%s(): DRAMC register = %#0x\n", __func__, dramcr); mci = edac_mc_alloc(0, R82600_NR_CSROWS, R82600_NR_CHANS); if (mci == NULL) { @@ -239,29 +231,28 @@ static int r82600_probe1(struct pci_dev *pdev, int dev_idx) goto fail; } - debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci); - + debugf0("%s(): mci = %p\n", __func__, mci); mci->pdev = pdev; mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_DDR; - mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED; - /* FIXME try to work out if the chip leads have been * - * used for COM2 instead on this board? [MA6?] MAYBE: */ + /* FIXME try to work out if the chip leads have been used for COM2 + * instead on this board? [MA6?] MAYBE: + */ /* On the R82600, the pins for memory bits 72:65 - i.e. the * * EC bits are shared with the pins for COM2 (!), so if COM2 * * is enabled, we assume COM2 is wired up, and thus no EDAC * * is possible. */ mci->edac_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED; + if (ecc_on) { if (scrub_disabled) - debugf3("MC: " __FILE__ ": %s(): mci = %p - " - "Scrubbing disabled! EAP: %#0x\n", __func__, - mci, eapr); + debugf3("%s(): mci = %p - Scrubbing disabled! EAP: " + "%#0x\n", __func__, mci, eapr); } else mci->edac_cap = EDAC_FLAG_NONE; - mci->mod_name = BS_MOD_STR; + mci->mod_name = EDAC_MOD_STR; mci->mod_ver = "$Revision: 1.1.2.6 $"; mci->ctl_name = "R82600"; mci->edac_check = r82600_check; @@ -276,23 +267,21 @@ static int r82600_probe1(struct pci_dev *pdev, int dev_idx) /* find the DRAM Chip Select Base address and mask */ pci_read_config_byte(mci->pdev, R82600_DRBA + index, &drbar); - debugf1("MC%d: " __FILE__ ": %s() Row=%d DRBA = %#0x\n", - mci->mc_idx, __func__, index, drbar); + debugf1("MC%d: %s() Row=%d DRBA = %#0x\n", mci->mc_idx, + __func__, index, drbar); row_high_limit = ((u32) drbar << 24); /* row_high_limit = ((u32)drbar << 24) | 0xffffffUL; */ - debugf1("MC%d: " __FILE__ ": %s() Row=%d, " - "Boundry Address=%#0x, Last = %#0x \n", - mci->mc_idx, __func__, index, row_high_limit, - row_high_limit_last); + debugf1("MC%d: %s() Row=%d, Boundry Address=%#0x, Last = " + "%#0x \n", mci->mc_idx, __func__, index, + row_high_limit, row_high_limit_last); /* Empty row [p.57] */ if (row_high_limit == row_high_limit_last) continue; row_base = row_high_limit_last; - csrow->first_page = row_base >> PAGE_SHIFT; csrow->last_page = (row_high_limit >> PAGE_SHIFT) - 1; csrow->nr_pages = csrow->last_page - csrow->first_page + 1; @@ -308,31 +297,22 @@ static int r82600_probe1(struct pci_dev *pdev, int dev_idx) row_high_limit_last = row_high_limit; } - /* clear counters */ - /* FIXME should we? */ + r82600_get_error_info(mci, &discard); /* clear counters */ if (edac_mc_add_mc(mci)) { - debugf3("MC: " __FILE__ - ": %s(): failed edac_mc_add_mc()\n", __func__); + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); goto fail; } /* get this far and it's successful */ - /* Clear error flags to allow next error to be reported [p.62] */ - /* Test systems seem to always have the UE flag raised on boot */ - - eap_init_bits = BIT(0) & BIT(1); if (disable_hardware_scrub) { - eap_init_bits |= BIT(31); - debugf3("MC: " __FILE__ ": %s(): Disabling Hardware Scrub " - "(scrub on error)\n", __func__); + debugf3("%s(): Disabling Hardware Scrub (scrub on error)\n", + __func__); + pci_write_bits32(mci->pdev, R82600_EAP, BIT(31), BIT(31)); } - pci_write_bits32(mci->pdev, R82600_EAP, eap_init_bits, - eap_init_bits); - - debugf3("MC: " __FILE__ ": %s(): success\n", __func__); + debugf3("%s(): success\n", __func__); return 0; fail: @@ -344,62 +324,60 @@ fail: /* returns count (>= 0), or negative on error */ static int __devinit r82600_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { - debugf0("MC: " __FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); /* don't need to call pci_device_enable() */ return r82600_probe1(pdev, ent->driver_data); } - static void __devexit r82600_remove_one(struct pci_dev *pdev) { struct mem_ctl_info *mci; - debugf0(__FILE__ ": %s()\n", __func__); + debugf0("%s()\n", __func__); - if (((mci = edac_mc_find_mci_by_pdev(pdev)) != NULL) && - !edac_mc_del_mc(mci)) - edac_mc_free(mci); -} + if ((mci = edac_mc_del_mc(pdev)) == NULL) + return; + edac_mc_free(mci); +} static const struct pci_device_id r82600_pci_tbl[] __devinitdata = { - {PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID)}, - {0,} /* 0 terminated list. */ + { + PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID) + }, + { + 0, + } /* 0 terminated list. */ }; MODULE_DEVICE_TABLE(pci, r82600_pci_tbl); - static struct pci_driver r82600_driver = { - .name = BS_MOD_STR, + .name = EDAC_MOD_STR, .probe = r82600_init_one, .remove = __devexit_p(r82600_remove_one), .id_table = r82600_pci_tbl, }; - static int __init r82600_init(void) { return pci_register_driver(&r82600_driver); } - static void __exit r82600_exit(void) { pci_unregister_driver(&r82600_driver); } - module_init(r82600_init); module_exit(r82600_exit); - MODULE_LICENSE("GPL"); MODULE_AUTHOR("Tim Small <tim@buttersideup.com> - WPAD Ltd. " - "on behalf of EADS Astrium"); + "on behalf of EADS Astrium"); MODULE_DESCRIPTION("MC support for Radisys 82600 memory controllers"); module_param(disable_hardware_scrub, bool, 0644); diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c index d6543fc4a92..339f405ff70 100644 --- a/drivers/firmware/dcdbas.c +++ b/drivers/firmware/dcdbas.c @@ -484,26 +484,15 @@ static void dcdbas_host_control(void) static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code, void *unused) { - static unsigned int notify_cnt = 0; - switch (code) { case SYS_DOWN: case SYS_HALT: case SYS_POWER_OFF: if (host_control_on_shutdown) { /* firmware is going to perform host control action */ - if (++notify_cnt == 2) { - printk(KERN_WARNING - "Please wait for shutdown " - "action to complete...\n"); - dcdbas_host_control(); - } - /* - * register again and initiate the host control - * action on the second notification to allow - * everyone that registered to be notified - */ - register_reboot_notifier(nb); + printk(KERN_WARNING "Please wait for shutdown " + "action to complete...\n"); + dcdbas_host_control(); } break; } @@ -514,7 +503,7 @@ static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code, static struct notifier_block dcdbas_reboot_nb = { .notifier_call = dcdbas_reboot_notify, .next = NULL, - .priority = 0 + .priority = INT_MIN }; static DCDBAS_BIN_ATTR_RW(smi_data); diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 343379f23a5..9b7e4d52ffd 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -568,20 +568,20 @@ systab_read(struct subsystem *entry, char *buf) if (!entry || !buf) return -EINVAL; - if (efi.mps) - str += sprintf(str, "MPS=0x%lx\n", __pa(efi.mps)); - if (efi.acpi20) - str += sprintf(str, "ACPI20=0x%lx\n", __pa(efi.acpi20)); - if (efi.acpi) - str += sprintf(str, "ACPI=0x%lx\n", __pa(efi.acpi)); - if (efi.smbios) - str += sprintf(str, "SMBIOS=0x%lx\n", __pa(efi.smbios)); - if (efi.hcdp) - str += sprintf(str, "HCDP=0x%lx\n", __pa(efi.hcdp)); - if (efi.boot_info) - str += sprintf(str, "BOOTINFO=0x%lx\n", __pa(efi.boot_info)); - if (efi.uga) - str += sprintf(str, "UGA=0x%lx\n", __pa(efi.uga)); + if (efi.mps != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "MPS=0x%lx\n", efi.mps); + if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "ACPI20=0x%lx\n", efi.acpi20); + if (efi.acpi != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "ACPI=0x%lx\n", efi.acpi); + if (efi.smbios != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios); + if (efi.hcdp != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "HCDP=0x%lx\n", efi.hcdp); + if (efi.boot_info != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "BOOTINFO=0x%lx\n", efi.boot_info); + if (efi.uga != EFI_INVALID_TABLE_ADDR) + str += sprintf(str, "UGA=0x%lx\n", efi.uga); return str - buf; } diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c index ae1fb45dbb4..c37baf9448b 100644 --- a/drivers/firmware/pcdp.c +++ b/drivers/firmware/pcdp.c @@ -89,19 +89,20 @@ efi_setup_pcdp_console(char *cmdline) struct pcdp_uart *uart; struct pcdp_device *dev, *end; int i, serial = 0; + int rc = -ENODEV; - pcdp = efi.hcdp; - if (!pcdp) + if (efi.hcdp == EFI_INVALID_TABLE_ADDR) return -ENODEV; - printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, __pa(pcdp)); + pcdp = ioremap(efi.hcdp, 4096); + printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, efi.hcdp); if (strstr(cmdline, "console=hcdp")) { if (pcdp->rev < 3) serial = 1; } else if (strstr(cmdline, "console=")) { printk(KERN_INFO "Explicit \"console=\"; ignoring PCDP\n"); - return -ENODEV; + goto out; } if (pcdp->rev < 3 && efi_uart_console_only()) @@ -110,7 +111,8 @@ efi_setup_pcdp_console(char *cmdline) for (i = 0, uart = pcdp->uart; i < pcdp->num_uarts; i++, uart++) { if (uart->flags & PCDP_UART_PRIMARY_CONSOLE || serial) { if (uart->type == PCDP_CONSOLE_UART) { - return setup_serial_console(uart); + rc = setup_serial_console(uart); + goto out; } } } @@ -121,10 +123,13 @@ efi_setup_pcdp_console(char *cmdline) dev = (struct pcdp_device *) ((u8 *) dev + dev->length)) { if (dev->flags & PCDP_PRIMARY_CONSOLE) { if (dev->type == PCDP_CONSOLE_VGA) { - return setup_vga_console(dev); + rc = setup_vga_console(dev); + goto out; } } } - return -ENODEV; +out: + iounmap(pcdp); + return rc; } diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig index f9fae28f561..7aa5c38f085 100644 --- a/drivers/i2c/chips/Kconfig +++ b/drivers/i2c/chips/Kconfig @@ -65,15 +65,6 @@ config SENSORS_PCF8591 This driver can also be built as a module. If so, the module will be called pcf8591. -config SENSORS_RTC8564 - tristate "Epson 8564 RTC chip" - depends on I2C && EXPERIMENTAL - help - If you say yes here you get support for the Epson 8564 RTC chip. - - This driver can also be built as a module. If so, the module - will be called i2c-rtc8564. - config ISP1301_OMAP tristate "Philips ISP1301 with OMAP OTG" depends on I2C && ARCH_OMAP_OTG @@ -126,13 +117,4 @@ config SENSORS_MAX6875 This driver can also be built as a module. If so, the module will be called max6875. -config RTC_X1205_I2C - tristate "Xicor X1205 RTC chip" - depends on I2C && EXPERIMENTAL - help - If you say yes here you get support for the Xicor X1205 RTC chip. - - This driver can also be built as a module. If so, the module - will be called x1205. - endmenu diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile index 46178b57b1f..779868ef2e2 100644 --- a/drivers/i2c/chips/Makefile +++ b/drivers/i2c/chips/Makefile @@ -10,10 +10,8 @@ obj-$(CONFIG_SENSORS_M41T00) += m41t00.o obj-$(CONFIG_SENSORS_PCA9539) += pca9539.o obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o -obj-$(CONFIG_SENSORS_RTC8564) += rtc8564.o obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o obj-$(CONFIG_TPS65010) += tps65010.o -obj-$(CONFIG_RTC_X1205_I2C) += x1205.o ifeq ($(CONFIG_I2C_DEBUG_CHIP),y) EXTRA_CFLAGS += -DDEBUG diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c deleted file mode 100644 index 0d8699b3f48..00000000000 --- a/drivers/i2c/chips/rtc8564.c +++ /dev/null @@ -1,385 +0,0 @@ -/* - * linux/drivers/i2c/chips/rtc8564.c - * - * Copyright (C) 2002-2004 Stefan Eletzhofer - * - * based on linux/drivers/acron/char/pcf8583.c - * Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Driver for system3's EPSON RTC 8564 chip - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/bcd.h> -#include <linux/i2c.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/rtc.h> /* get the user-level API */ -#include <linux/init.h> - -#include "rtc8564.h" - -#ifdef DEBUG -# define _DBG(x, fmt, args...) do{ if (debug>=x) printk(KERN_DEBUG"%s: " fmt "\n", __FUNCTION__, ##args); } while(0); -#else -# define _DBG(x, fmt, args...) do { } while(0); -#endif - -#define _DBGRTCTM(x, rtctm) if (debug>=x) printk("%s: secs=%d, mins=%d, hours=%d, mday=%d, " \ - "mon=%d, year=%d, wday=%d VL=%d\n", __FUNCTION__, \ - (rtctm).secs, (rtctm).mins, (rtctm).hours, (rtctm).mday, \ - (rtctm).mon, (rtctm).year, (rtctm).wday, (rtctm).vl); - -struct rtc8564_data { - struct i2c_client client; - u16 ctrl; -}; - -static inline u8 _rtc8564_ctrl1(struct i2c_client *client) -{ - struct rtc8564_data *data = i2c_get_clientdata(client); - return data->ctrl & 0xff; -} -static inline u8 _rtc8564_ctrl2(struct i2c_client *client) -{ - struct rtc8564_data *data = i2c_get_clientdata(client); - return (data->ctrl & 0xff00) >> 8; -} - -#define CTRL1(c) _rtc8564_ctrl1(c) -#define CTRL2(c) _rtc8564_ctrl2(c) - -static int debug; -module_param(debug, int, S_IRUGO | S_IWUSR); - -static struct i2c_driver rtc8564_driver; - -static unsigned short ignore[] = { I2C_CLIENT_END }; -static unsigned short normal_addr[] = { 0x51, I2C_CLIENT_END }; - -static struct i2c_client_address_data addr_data = { - .normal_i2c = normal_addr, - .probe = ignore, - .ignore = ignore, -}; - -static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem); -static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem); - -static int rtc8564_read(struct i2c_client *client, unsigned char adr, - unsigned char *buf, unsigned char len) -{ - int ret = -EIO; - unsigned char addr[1] = { adr }; - struct i2c_msg msgs[2] = { - {client->addr, 0, 1, addr}, - {client->addr, I2C_M_RD, len, buf} - }; - - _DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, buf, len); - - if (!buf) { - ret = -EINVAL; - goto done; - } - - ret = i2c_transfer(client->adapter, msgs, 2); - if (ret == 2) { - ret = 0; - } - -done: - return ret; -} - -static int rtc8564_write(struct i2c_client *client, unsigned char adr, - unsigned char *data, unsigned char len) -{ - int ret = 0; - unsigned char _data[16]; - struct i2c_msg wr; - int i; - - if (!data || len > 15) { - ret = -EINVAL; - goto done; - } - - _DBG(1, "client=%p, adr=%d, buf=%p, len=%d", client, adr, data, len); - - _data[0] = adr; - for (i = 0; i < len; i++) { - _data[i + 1] = data[i]; - _DBG(5, "data[%d] = 0x%02x (%d)", i, data[i], data[i]); - } - - wr.addr = client->addr; - wr.flags = 0; - wr.len = len + 1; - wr.buf = _data; - - ret = i2c_transfer(client->adapter, &wr, 1); - if (ret == 1) { - ret = 0; - } - -done: - return ret; -} - -static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind) -{ - int ret; - struct i2c_client *new_client; - struct rtc8564_data *d; - unsigned char data[10]; - unsigned char ad[1] = { 0 }; - struct i2c_msg ctrl_wr[1] = { - {addr, 0, 2, data} - }; - struct i2c_msg ctrl_rd[2] = { - {addr, 0, 1, ad}, - {addr, I2C_M_RD, 2, data} - }; - - d = kzalloc(sizeof(struct rtc8564_data), GFP_KERNEL); - if (!d) { - ret = -ENOMEM; - goto done; - } - new_client = &d->client; - - strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE); - i2c_set_clientdata(new_client, d); - new_client->addr = addr; - new_client->adapter = adap; - new_client->driver = &rtc8564_driver; - - _DBG(1, "client=%p", new_client); - - /* init ctrl1 reg */ - data[0] = 0; - data[1] = 0; - ret = i2c_transfer(new_client->adapter, ctrl_wr, 1); - if (ret != 1) { - printk(KERN_INFO "rtc8564: cant init ctrl1\n"); - ret = -ENODEV; - goto done; - } - - /* read back ctrl1 and ctrl2 */ - ret = i2c_transfer(new_client->adapter, ctrl_rd, 2); - if (ret != 2) { - printk(KERN_INFO "rtc8564: cant read ctrl\n"); - ret = -ENODEV; - goto done; - } - - d->ctrl = data[0] | (data[1] << 8); - - _DBG(1, "RTC8564_REG_CTRL1=%02x, RTC8564_REG_CTRL2=%02x", - data[0], data[1]); - - ret = i2c_attach_client(new_client); -done: - if (ret) { - kfree(d); - } - return ret; -} - -static int rtc8564_probe(struct i2c_adapter *adap) -{ - return i2c_probe(adap, &addr_data, rtc8564_attach); -} - -static int rtc8564_detach(struct i2c_client *client) -{ - i2c_detach_client(client); - kfree(i2c_get_clientdata(client)); - return 0; -} - -static int rtc8564_get_datetime(struct i2c_client *client, struct rtc_tm *dt) -{ - int ret = -EIO; - unsigned char buf[15]; - - _DBG(1, "client=%p, dt=%p", client, dt); - - if (!dt) - return -EINVAL; - - memset(buf, 0, sizeof(buf)); - - ret = rtc8564_read(client, 0, buf, 15); - if (ret) - return ret; - - /* century stored in minute alarm reg */ - dt->year = BCD2BIN(buf[RTC8564_REG_YEAR]); - dt->year += 100 * BCD2BIN(buf[RTC8564_REG_AL_MIN] & 0x3f); - dt->mday = BCD2BIN(buf[RTC8564_REG_DAY] & 0x3f); - dt->wday = BCD2BIN(buf[RTC8564_REG_WDAY] & 7); - dt->mon = BCD2BIN(buf[RTC8564_REG_MON_CENT] & 0x1f); - - dt->secs = BCD2BIN(buf[RTC8564_REG_SEC] & 0x7f); - dt->vl = (buf[RTC8564_REG_SEC] & 0x80) == 0x80; - dt->mins = BCD2BIN(buf[RTC8564_REG_MIN] & 0x7f); - dt->hours = BCD2BIN(buf[RTC8564_REG_HR] & 0x3f); - - _DBGRTCTM(2, *dt); - - return 0; -} - -static int -rtc8564_set_datetime(struct i2c_client *client, struct rtc_tm *dt, int datetoo) -{ - int ret, len = 5; - unsigned char buf[15]; - - _DBG(1, "client=%p, dt=%p", client, dt); - - if (!dt) - return -EINVAL; - - _DBGRTCTM(2, *dt); - - buf[RTC8564_REG_CTRL1] = CTRL1(client) | RTC8564_CTRL1_STOP; - buf[RTC8564_REG_CTRL2] = CTRL2(client); - buf[RTC8564_REG_SEC] = BIN2BCD(dt->secs); - buf[RTC8564_REG_MIN] = BIN2BCD(dt->mins); - buf[RTC8564_REG_HR] = BIN2BCD(dt->hours); - - if (datetoo) { - len += 5; - buf[RTC8564_REG_DAY] = BIN2BCD(dt->mday); - buf[RTC8564_REG_WDAY] = BIN2BCD(dt->wday); - buf[RTC8564_REG_MON_CENT] = BIN2BCD(dt->mon) & 0x1f; - /* century stored in minute alarm reg */ - buf[RTC8564_REG_YEAR] = BIN2BCD(dt->year % 100); - buf[RTC8564_REG_AL_MIN] = BIN2BCD(dt->year / 100); - } - - ret = rtc8564_write(client, 0, buf, len); - if (ret) { - _DBG(1, "error writing data! %d", ret); - } - - buf[RTC8564_REG_CTRL1] = CTRL1(client); - ret = rtc8564_write(client, 0, buf, 1); - if (ret) { - _DBG(1, "error writing data! %d", ret); - } - - return ret; -} - -static int rtc8564_get_ctrl(struct i2c_client *client, unsigned int *ctrl) -{ - struct rtc8564_data *data = i2c_get_clientdata(client); - - if (!ctrl) - return -1; - - *ctrl = data->ctrl; - return 0; -} - -static int rtc8564_set_ctrl(struct i2c_client *client, unsigned int *ctrl) -{ - struct rtc8564_data *data = i2c_get_clientdata(client); - unsigned char buf[2]; - - if (!ctrl) - return -1; - - buf[0] = *ctrl & 0xff; - buf[1] = (*ctrl & 0xff00) >> 8; - data->ctrl = *ctrl; - - return rtc8564_write(client, 0, buf, 2); -} - -static int rtc8564_read_mem(struct i2c_client *client, struct mem *mem) -{ - - if (!mem) - return -EINVAL; - - return rtc8564_read(client, mem->loc, mem->data, mem->nr); -} - -static int rtc8564_write_mem(struct i2c_client *client, struct mem *mem) -{ - - if (!mem) - return -EINVAL; - - return rtc8564_write(client, mem->loc, mem->data, mem->nr); -} - -static int -rtc8564_command(struct i2c_client *client, unsigned int cmd, void *arg) -{ - - _DBG(1, "cmd=%d", cmd); - - switch (cmd) { - case RTC_GETDATETIME: - return rtc8564_get_datetime(client, arg); - - case RTC_SETTIME: - return rtc8564_set_datetime(client, arg, 0); - - case RTC_SETDATETIME: - return rtc8564_set_datetime(client, arg, 1); - - case RTC_GETCTRL: - return rtc8564_get_ctrl(client, arg); - - case RTC_SETCTRL: - return rtc8564_set_ctrl(client, arg); - - case MEM_READ: - return rtc8564_read_mem(client, arg); - - case MEM_WRITE: - return rtc8564_write_mem(client, arg); - - default: - return -EINVAL; - } -} - -static struct i2c_driver rtc8564_driver = { - .driver = { - .name = "RTC8564", - }, - .id = I2C_DRIVERID_RTC8564, - .attach_adapter = rtc8564_probe, - .detach_client = rtc8564_detach, - .command = rtc8564_command -}; - -static __init int rtc8564_init(void) -{ - return i2c_add_driver(&rtc8564_driver); -} - -static __exit void rtc8564_exit(void) -{ - i2c_del_driver(&rtc8564_driver); -} - -MODULE_AUTHOR("Stefan Eletzhofer <Stefan.Eletzhofer@eletztrick.de>"); -MODULE_DESCRIPTION("EPSON RTC8564 Driver"); -MODULE_LICENSE("GPL"); - -module_init(rtc8564_init); -module_exit(rtc8564_exit); diff --git a/drivers/i2c/chips/rtc8564.h b/drivers/i2c/chips/rtc8564.h deleted file mode 100644 index e5342d10b8f..00000000000 --- a/drivers/i2c/chips/rtc8564.h +++ /dev/null @@ -1,78 +0,0 @@ -/* - * linux/drivers/i2c/chips/rtc8564.h - * - * Copyright (C) 2002-2004 Stefan Eletzhofer - * - * based on linux/drivers/acron/char/pcf8583.h - * Copyright (C) 2000 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -struct rtc_tm { - unsigned char secs; - unsigned char mins; - unsigned char hours; - unsigned char mday; - unsigned char mon; - unsigned short year; /* xxxx 4 digits :) */ - unsigned char wday; - unsigned char vl; -}; - -struct mem { - unsigned int loc; - unsigned int nr; - unsigned char *data; -}; - -#define RTC_GETDATETIME 0 -#define RTC_SETTIME 1 -#define RTC_SETDATETIME 2 -#define RTC_GETCTRL 3 -#define RTC_SETCTRL 4 -#define MEM_READ 5 -#define MEM_WRITE 6 - -#define RTC8564_REG_CTRL1 0x0 /* T 0 S 0 | T 0 0 0 */ -#define RTC8564_REG_CTRL2 0x1 /* 0 0 0 TI/TP | AF TF AIE TIE */ -#define RTC8564_REG_SEC 0x2 /* VL 4 2 1 | 8 4 2 1 */ -#define RTC8564_REG_MIN 0x3 /* x 4 2 1 | 8 4 2 1 */ -#define RTC8564_REG_HR 0x4 /* x x 2 1 | 8 4 2 1 */ -#define RTC8564_REG_DAY 0x5 /* x x 2 1 | 8 4 2 1 */ -#define RTC8564_REG_WDAY 0x6 /* x x x x | x 4 2 1 */ -#define RTC8564_REG_MON_CENT 0x7 /* C x x 1 | 8 4 2 1 */ -#define RTC8564_REG_YEAR 0x8 /* 8 4 2 1 | 8 4 2 1 */ -#define RTC8564_REG_AL_MIN 0x9 /* AE 4 2 1 | 8 4 2 1 */ -#define RTC8564_REG_AL_HR 0xa /* AE 4 2 1 | 8 4 2 1 */ -#define RTC8564_REG_AL_DAY 0xb /* AE x 2 1 | 8 4 2 1 */ -#define RTC8564_REG_AL_WDAY 0xc /* AE x x x | x 4 2 1 */ -#define RTC8564_REG_CLKOUT 0xd /* FE x x x | x x FD1 FD0 */ -#define RTC8564_REG_TCTL 0xe /* TE x x x | x x FD1 FD0 */ -#define RTC8564_REG_TIMER 0xf /* 8 bit binary */ - -/* Control reg */ -#define RTC8564_CTRL1_TEST1 (1<<3) -#define RTC8564_CTRL1_STOP (1<<5) -#define RTC8564_CTRL1_TEST2 (1<<7) - -#define RTC8564_CTRL2_TIE (1<<0) -#define RTC8564_CTRL2_AIE (1<<1) -#define RTC8564_CTRL2_TF (1<<2) -#define RTC8564_CTRL2_AF (1<<3) -#define RTC8564_CTRL2_TI_TP (1<<4) - -/* CLKOUT frequencies */ -#define RTC8564_FD_32768HZ (0x0) -#define RTC8564_FD_1024HZ (0x1) -#define RTC8564_FD_32 (0x2) -#define RTC8564_FD_1HZ (0x3) - -/* Timer CTRL */ -#define RTC8564_TD_4096HZ (0x0) -#define RTC8564_TD_64HZ (0x1) -#define RTC8564_TD_1HZ (0x2) -#define RTC8564_TD_1_60HZ (0x3) - -#define I2C_DRIVERID_RTC8564 0xf000 diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index c7671e18801..b4a41d6d071 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -2143,6 +2143,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; req.data = (char *)&capbuf; req.data_len = sizeof(capbuf); + req.flags |= REQ_QUIET; stat = cdrom_queue_packet_command(drive, &req); if (stat == 0) { diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index ebc59064b47..f04791a58df 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -433,6 +433,7 @@ #include <linux/timer.h> #include <linux/mm.h> #include <linux/interrupt.h> +#include <linux/jiffies.h> #include <linux/major.h> #include <linux/devfs_fs_kernel.h> #include <linux/errno.h> @@ -2336,7 +2337,7 @@ static ide_startstop_t idetape_rw_callback (ide_drive_t *drive) } if (time_after(jiffies, tape->insert_time)) tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time); - if (jiffies - tape->avg_time >= HZ) { + if (time_after_eq(jiffies, tape->avg_time + HZ)) { tape->avg_speed = tape->avg_size * HZ / (jiffies - tape->avg_time) / 1024; tape->avg_size = 0; tape->avg_time = jiffies; @@ -2497,7 +2498,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, } else { return ide_do_reset(drive); } - } else if (jiffies - tape->dsc_polling_start > IDETAPE_DSC_MA_THRESHOLD) + } else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD)) tape->dsc_polling_frequency = IDETAPE_DSC_MA_SLOW; idetape_postpone_request(drive); return ide_stopped; diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c index 21965e5ef25..b22ee546231 100644 --- a/drivers/ide/pci/amd74xx.c +++ b/drivers/ide/pci/amd74xx.c @@ -347,10 +347,8 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch break; case AMD_UDMA_66: - pci_read_config_dword(dev, AMD_UDMA_TIMING, &u); - for (i = 24; i >= 0; i -= 8) - if ((u >> i) & 4) - amd_80w |= (1 << (1 - (i >> 4))); + /* no host side cable detection */ + amd_80w = 0x03; break; } @@ -386,8 +384,6 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch if (amd_clock < 20000 || amd_clock > 50000) { printk(KERN_WARNING "%s: User given PCI clock speed impossible (%d), using 33 MHz instead.\n", amd_chipset->name, amd_clock); - printk(KERN_WARNING "%s: Use ide0=ata66 if you want to assume 80-wire cable\n", - amd_chipset->name); amd_clock = 33333; } diff --git a/drivers/ide/pci/generic.c b/drivers/ide/pci/generic.c index 6e3ab0c38c4..f82e8210972 100644 --- a/drivers/ide/pci/generic.c +++ b/drivers/ide/pci/generic.c @@ -41,14 +41,15 @@ static int ide_generic_all; /* Set to claim all devices */ +#ifndef MODULE static int __init ide_generic_all_on(char *unused) { ide_generic_all = 1; printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n"); return 1; } - __setup("all-generic-ide", ide_generic_all_on); +#endif static void __devinit init_hwif_generic (ide_hwif_t *hwif) { diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c index 75a2253a3e6..8e9d87701ce 100644 --- a/drivers/ide/pci/sis5513.c +++ b/drivers/ide/pci/sis5513.c @@ -112,6 +112,7 @@ static const struct { { "SiS5596", PCI_DEVICE_ID_SI_5596, ATA_16 }, { "SiS5571", PCI_DEVICE_ID_SI_5571, ATA_16 }, + { "SiS5517", PCI_DEVICE_ID_SI_5517, ATA_16 }, { "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 }, }; @@ -524,6 +525,7 @@ static void config_art_rwp_pio (ide_drive_t *drive, u8 pio) case 3: test1 = 0x30|0x03; break; case 2: test1 = 0x40|0x04; break; case 1: test1 = 0x60|0x07; break; + case 0: test1 = 0x00; break; default: break; } pci_write_config_byte(dev, drive_pci, test1); diff --git a/drivers/ieee1394/highlevel.c b/drivers/ieee1394/highlevel.c index 734b121a055..491e6032bde 100644 --- a/drivers/ieee1394/highlevel.c +++ b/drivers/ieee1394/highlevel.c @@ -306,8 +306,7 @@ u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, u64 align_mask = ~(alignment - 1); if ((alignment & 3) || (alignment > 0x800000000000ULL) || - ((hweight32(alignment >> 32) + - hweight32(alignment & 0xffffffff) != 1))) { + (hweight64(alignment) != 1)) { HPSB_ERR("%s called with invalid alignment: 0x%048llx", __FUNCTION__, (unsigned long long)alignment); return retval; diff --git a/drivers/input/input.c b/drivers/input/input.c index 4fe3da3c667..f8af0945964 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -923,7 +923,7 @@ void input_unregister_handler(struct input_handler *handler) static int input_open_file(struct inode *inode, struct file *file) { struct input_handler *handler = input_table[iminor(inode) >> 5]; - struct file_operations *old_fops, *new_fops = NULL; + const struct file_operations *old_fops, *new_fops = NULL; int err; /* No load-on-demand here? */ diff --git a/drivers/input/serio/hp_sdc_mlc.c b/drivers/input/serio/hp_sdc_mlc.c index 1c9426fd520..aa4a8a4ccfd 100644 --- a/drivers/input/serio/hp_sdc_mlc.c +++ b/drivers/input/serio/hp_sdc_mlc.c @@ -270,9 +270,10 @@ static void hp_sdc_mlc_out (hil_mlc *mlc) { do_control: priv->emtestmode = mlc->opacket & HIL_CTRL_TEST; - if ((mlc->opacket & (HIL_CTRL_APE | HIL_CTRL_IPF)) == HIL_CTRL_APE) { - BUG(); /* we cannot emulate this, it should not be used. */ - } + + /* we cannot emulate this, it should not be used. */ + BUG_ON((mlc->opacket & (HIL_CTRL_APE | HIL_CTRL_IPF)) == HIL_CTRL_APE); + if ((mlc->opacket & HIL_CTRL_ONLY) == HIL_CTRL_ONLY) goto control_only; if (mlc->opacket & HIL_CTRL_APE) { BUG(); /* Should not send command/data after engaging APE */ diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index a81f987978c..46d1fec2cfd 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -23,7 +23,7 @@ #include <linux/slab.h> #include <linux/spi/spi.h> #include <linux/spi/ads7846.h> -#include <linux/interrupt.h> +#include <asm/irq.h> #ifdef CONFIG_ARM #include <asm/mach-types.h> diff --git a/drivers/isdn/Makefile b/drivers/isdn/Makefile index 03d8ccd5195..988142c30a6 100644 --- a/drivers/isdn/Makefile +++ b/drivers/isdn/Makefile @@ -13,3 +13,4 @@ obj-$(CONFIG_ISDN_DRV_SC) += sc/ obj-$(CONFIG_ISDN_DRV_LOOP) += isdnloop/ obj-$(CONFIG_ISDN_DRV_ACT2000) += act2000/ obj-$(CONFIG_HYSDN) += hysdn/ +obj-$(CONFIG_ISDN_DRV_GIGASET) += gigaset/ diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 623adbb0d13..9b493f0becc 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -1485,6 +1485,7 @@ static int __init capi_init(void) { char *p; char *compileinfo; + int major_ret; if ((p = strchr(revision, ':')) != 0 && p[1]) { strlcpy(rev, p + 2, sizeof(rev)); @@ -1493,11 +1494,12 @@ static int __init capi_init(void) } else strcpy(rev, "1.0"); - if (register_chrdev(capi_major, "capi20", &capi_fops)) { + major_ret = register_chrdev(capi_major, "capi20", &capi_fops); + if (major_ret < 0) { printk(KERN_ERR "capi20: unable to get major %d\n", capi_major); - return -EIO; + return major_ret; } - + capi_major = major_ret; capi_class = class_create(THIS_MODULE, "capi"); if (IS_ERR(capi_class)) { unregister_chrdev(capi_major, "capi20"); diff --git a/drivers/isdn/capi/kcapi_proc.c b/drivers/isdn/capi/kcapi_proc.c index 2cc8b27e4c3..ca9dc00a45c 100644 --- a/drivers/isdn/capi/kcapi_proc.c +++ b/drivers/isdn/capi/kcapi_proc.c @@ -233,7 +233,7 @@ static struct file_operations proc_applstats_ops = { }; static void -create_seq_entry(char *name, mode_t mode, struct file_operations *f) +create_seq_entry(char *name, mode_t mode, const struct file_operations *f) { struct proc_dir_entry *entry; entry = create_proc_entry(name, mode, NULL); diff --git a/drivers/isdn/gigaset/Kconfig b/drivers/isdn/gigaset/Kconfig new file mode 100644 index 00000000000..53c4fb62ed8 --- /dev/null +++ b/drivers/isdn/gigaset/Kconfig @@ -0,0 +1,42 @@ +menu "Siemens Gigaset" + depends on ISDN_I4L + +config ISDN_DRV_GIGASET + tristate "Siemens Gigaset support (isdn)" + depends on ISDN_I4L && m +# depends on ISDN_I4L && MODULES + help + Say m here if you have a Gigaset or Sinus isdn device. + +if ISDN_DRV_GIGASET!=n + +config GIGASET_BASE + tristate "Gigaset base station support" + depends on ISDN_DRV_GIGASET && USB + help + Say m here if you need to communicate with the base + directly via USB. + +config GIGASET_M105 + tristate "Gigaset M105 support" + depends on ISDN_DRV_GIGASET && USB + help + Say m here if you need the driver for the Gigaset M105 device. + +config GIGASET_DEBUG + bool "Gigaset debugging" + help + This enables debugging code in the Gigaset drivers. + If in doubt, say yes. + +config GIGASET_UNDOCREQ + bool "Support for undocumented USB requests" + help + This enables support for USB requests we only know from + reverse engineering (currently M105 only). If you need + features like configuration mode of M105, say yes. If you + care about your device, say no. + +endif + +endmenu diff --git a/drivers/isdn/gigaset/Makefile b/drivers/isdn/gigaset/Makefile new file mode 100644 index 00000000000..9b9acf1a21a --- /dev/null +++ b/drivers/isdn/gigaset/Makefile @@ -0,0 +1,6 @@ +gigaset-y := common.o interface.o proc.o ev-layer.o i4l.o +usb_gigaset-y := usb-gigaset.o asyncdata.o +bas_gigaset-y := bas-gigaset.o isocdata.o + +obj-$(CONFIG_GIGASET_M105) += usb_gigaset.o gigaset.o +obj-$(CONFIG_GIGASET_BASE) += bas_gigaset.o gigaset.o diff --git a/drivers/isdn/gigaset/asyncdata.c b/drivers/isdn/gigaset/asyncdata.c new file mode 100644 index 00000000000..171f8b703d6 --- /dev/null +++ b/drivers/isdn/gigaset/asyncdata.c @@ -0,0 +1,597 @@ +/* + * Common data handling layer for ser_gigaset and usb_gigaset + * + * Copyright (c) 2005 by Tilman Schmidt <tilman@imap.cc>, + * Hansjoerg Lipp <hjlipp@web.de>, + * Stefan Eilers <Eilers.Stefan@epost.de>. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: asyncdata.c,v 1.2.2.7 2005/11/13 23:05:18 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/crc-ccitt.h> + +//#define GIG_M10x_STUFF_VOICE_DATA + +/* check if byte must be stuffed/escaped + * I'm not sure which data should be encoded. + * Therefore I will go the hard way and decode every value + * less than 0x20, the flag sequence and the control escape char. + */ +static inline int muststuff(unsigned char c) +{ + if (c < PPP_TRANS) return 1; + if (c == PPP_FLAG) return 1; + if (c == PPP_ESCAPE) return 1; + /* other possible candidates: */ + /* 0x91: XON with parity set */ + /* 0x93: XOFF with parity set */ + return 0; +} + +/* == data input =========================================================== */ + +/* process a block of received bytes in command mode (modem response) + * Return value: + * number of processed bytes + */ +static inline int cmd_loop(unsigned char c, unsigned char *src, int numbytes, + struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + unsigned cbytes = cs->cbytes; + int inputstate = inbuf->inputstate; + int startbytes = numbytes; + + for (;;) { + cs->respdata[cbytes] = c; + if (c == 10 || c == 13) { + dbg(DEBUG_TRANSCMD, "%s: End of Command (%d Bytes)", + __func__, cbytes); + cs->cbytes = cbytes; + gigaset_handle_modem_response(cs); /* can change cs->dle */ + cbytes = 0; + + if (cs->dle && + !(inputstate & INS_DLE_command)) { + inputstate &= ~INS_command; + break; + } + } else { + /* advance in line buffer, checking for overflow */ + if (cbytes < MAX_RESP_SIZE - 1) + cbytes++; + else + warn("response too large"); + } + + if (!numbytes) + break; + c = *src++; + --numbytes; + if (c == DLE_FLAG && + (cs->dle || inputstate & INS_DLE_command)) { + inputstate |= INS_DLE_char; + break; + } + } + + cs->cbytes = cbytes; + inbuf->inputstate = inputstate; + + return startbytes - numbytes; +} + +/* process a block of received bytes in lock mode (tty i/f) + * Return value: + * number of processed bytes + */ +static inline int lock_loop(unsigned char *src, int numbytes, + struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + + gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response", numbytes, src, 0); + gigaset_if_receive(cs, src, numbytes); + + return numbytes; +} + +/* process a block of received bytes in HDLC data mode + * Collect HDLC frames, undoing byte stuffing and watching for DLE escapes. + * When a frame is complete, check the FCS and pass valid frames to the LL. + * If DLE is encountered, return immediately to let the caller handle it. + * Return value: + * number of processed bytes + * numbytes (all bytes processed) on error --FIXME + */ +static inline int hdlc_loop(unsigned char c, unsigned char *src, int numbytes, + struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + struct bc_state *bcs = inbuf->bcs; + int inputstate; + __u16 fcs; + struct sk_buff *skb; + unsigned char error; + struct sk_buff *compskb; + int startbytes = numbytes; + int l; + + IFNULLRETVAL(bcs, numbytes); + inputstate = bcs->inputstate; + fcs = bcs->fcs; + skb = bcs->skb; + IFNULLRETVAL(skb, numbytes); + + if (unlikely(inputstate & INS_byte_stuff)) { + inputstate &= ~INS_byte_stuff; + goto byte_stuff; + } + for (;;) { + if (unlikely(c == PPP_ESCAPE)) { + if (unlikely(!numbytes)) { + inputstate |= INS_byte_stuff; + break; + } + c = *src++; + --numbytes; + if (unlikely(c == DLE_FLAG && + (cs->dle || + inbuf->inputstate & INS_DLE_command))) { + inbuf->inputstate |= INS_DLE_char; + inputstate |= INS_byte_stuff; + break; + } +byte_stuff: + c ^= PPP_TRANS; +#ifdef CONFIG_GIGASET_DEBUG + if (unlikely(!muststuff(c))) + dbg(DEBUG_HDLC, + "byte stuffed: 0x%02x", c); +#endif + } else if (unlikely(c == PPP_FLAG)) { + if (unlikely(inputstate & INS_skip_frame)) { + if (!(inputstate & INS_have_data)) { /* 7E 7E */ + //dbg(DEBUG_HDLC, "(7e)7e------------------------"); +#ifdef CONFIG_GIGASET_DEBUG + ++bcs->emptycount; +#endif + } else + dbg(DEBUG_HDLC, + "7e----------------------------"); + + /* end of frame */ + error = 1; + gigaset_rcv_error(NULL, cs, bcs); + } else if (!(inputstate & INS_have_data)) { /* 7E 7E */ + //dbg(DEBUG_HDLC, "(7e)7e------------------------"); +#ifdef CONFIG_GIGASET_DEBUG + ++bcs->emptycount; +#endif + break; + } else { + dbg(DEBUG_HDLC, + "7e----------------------------"); + + /* end of frame */ + error = 0; + + if (unlikely(fcs != PPP_GOODFCS)) { + err("Packet checksum at %lu failed, " + "packet is corrupted (%u bytes)!", + bcs->rcvbytes, skb->len); + compskb = NULL; + gigaset_rcv_error(compskb, cs, bcs); + error = 1; + } else { + if (likely((l = skb->len) > 2)) { + skb->tail -= 2; + skb->len -= 2; + } else { + dev_kfree_skb(skb); + skb = NULL; + inputstate |= INS_skip_frame; + if (l == 1) { + err("invalid packet size (1)!"); + error = 1; + gigaset_rcv_error(NULL, cs, bcs); + } + } + if (likely(!(error || + (inputstate & + INS_skip_frame)))) { + gigaset_rcv_skb(skb, cs, bcs); + } + } + } + + if (unlikely(error)) + if (skb) + dev_kfree_skb(skb); + + fcs = PPP_INITFCS; + inputstate &= ~(INS_have_data | INS_skip_frame); + if (unlikely(bcs->ignore)) { + inputstate |= INS_skip_frame; + skb = NULL; + } else if (likely((skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL)) { + skb_reserve(skb, HW_HDR_LEN); + } else { + warn("could not allocate new skb"); + inputstate |= INS_skip_frame; + } + + break; +#ifdef CONFIG_GIGASET_DEBUG + } else if (unlikely(muststuff(c))) { + /* Should not happen. Possible after ZDLE=1<CR><LF>. */ + dbg(DEBUG_HDLC, "not byte stuffed: 0x%02x", c); +#endif + } + + /* add character */ + +#ifdef CONFIG_GIGASET_DEBUG + if (unlikely(!(inputstate & INS_have_data))) { + dbg(DEBUG_HDLC, + "7e (%d x) ================", bcs->emptycount); + bcs->emptycount = 0; + } +#endif + + inputstate |= INS_have_data; + + if (likely(!(inputstate & INS_skip_frame))) { + if (unlikely(skb->len == SBUFSIZE)) { + warn("received packet too long"); + dev_kfree_skb_any(skb); + skb = NULL; + inputstate |= INS_skip_frame; + break; + } + *gigaset_skb_put_quick(skb, 1) = c; + /* *__skb_put (skb, 1) = c; */ + fcs = crc_ccitt_byte(fcs, c); + } + + if (unlikely(!numbytes)) + break; + c = *src++; + --numbytes; + if (unlikely(c == DLE_FLAG && + (cs->dle || + inbuf->inputstate & INS_DLE_command))) { + inbuf->inputstate |= INS_DLE_char; + break; + } + } + bcs->inputstate = inputstate; + bcs->fcs = fcs; + bcs->skb = skb; + return startbytes - numbytes; +} + +/* process a block of received bytes in transparent data mode + * Invert bytes, undoing byte stuffing and watching for DLE escapes. + * If DLE is encountered, return immediately to let the caller handle it. + * Return value: + * number of processed bytes + * numbytes (all bytes processed) on error --FIXME + */ +static inline int iraw_loop(unsigned char c, unsigned char *src, int numbytes, + struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + struct bc_state *bcs = inbuf->bcs; + int inputstate; + struct sk_buff *skb; + int startbytes = numbytes; + + IFNULLRETVAL(bcs, numbytes); + inputstate = bcs->inputstate; + skb = bcs->skb; + IFNULLRETVAL(skb, numbytes); + + for (;;) { + /* add character */ + inputstate |= INS_have_data; + + if (likely(!(inputstate & INS_skip_frame))) { + if (unlikely(skb->len == SBUFSIZE)) { + //FIXME just pass skb up and allocate a new one + warn("received packet too long"); + dev_kfree_skb_any(skb); + skb = NULL; + inputstate |= INS_skip_frame; + break; + } + *gigaset_skb_put_quick(skb, 1) = gigaset_invtab[c]; + } + + if (unlikely(!numbytes)) + break; + c = *src++; + --numbytes; + if (unlikely(c == DLE_FLAG && + (cs->dle || + inbuf->inputstate & INS_DLE_command))) { + inbuf->inputstate |= INS_DLE_char; + break; + } + } + + /* pass data up */ + if (likely(inputstate & INS_have_data)) { + if (likely(!(inputstate & INS_skip_frame))) { + gigaset_rcv_skb(skb, cs, bcs); + } + inputstate &= ~(INS_have_data | INS_skip_frame); + if (unlikely(bcs->ignore)) { + inputstate |= INS_skip_frame; + skb = NULL; + } else if (likely((skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) + != NULL)) { + skb_reserve(skb, HW_HDR_LEN); + } else { + warn("could not allocate new skb"); + inputstate |= INS_skip_frame; + } + } + + bcs->inputstate = inputstate; + bcs->skb = skb; + return startbytes - numbytes; +} + +/* process a block of data received from the device + */ +void gigaset_m10x_input(struct inbuf_t *inbuf) +{ + struct cardstate *cs; + unsigned tail, head, numbytes; + unsigned char *src, c; + int procbytes; + + head = atomic_read(&inbuf->head); + tail = atomic_read(&inbuf->tail); + dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail); + + if (head != tail) { + cs = inbuf->cs; + src = inbuf->data + head; + numbytes = (head > tail ? RBUFSIZE : tail) - head; + dbg(DEBUG_INTR, "processing %u bytes", numbytes); + + while (numbytes) { + if (atomic_read(&cs->mstate) == MS_LOCKED) { + procbytes = lock_loop(src, numbytes, inbuf); + src += procbytes; + numbytes -= procbytes; + } else { + c = *src++; + --numbytes; + if (c == DLE_FLAG && (cs->dle || + inbuf->inputstate & INS_DLE_command)) { + if (!(inbuf->inputstate & INS_DLE_char)) { + inbuf->inputstate |= INS_DLE_char; + goto nextbyte; + } + /* <DLE> <DLE> => <DLE> in data stream */ + inbuf->inputstate &= ~INS_DLE_char; + } + + if (!(inbuf->inputstate & INS_DLE_char)) { + + /* FIXME Einfach je nach Modus Funktionszeiger in cs setzen [hier+hdlc_loop]? */ + /* FIXME Spart folgendes "if" und ermoeglicht andere Protokolle */ + if (inbuf->inputstate & INS_command) + procbytes = cmd_loop(c, src, numbytes, inbuf); + else if (inbuf->bcs->proto2 == ISDN_PROTO_L2_HDLC) + procbytes = hdlc_loop(c, src, numbytes, inbuf); + else + procbytes = iraw_loop(c, src, numbytes, inbuf); + + src += procbytes; + numbytes -= procbytes; + } else { /* DLE-char */ + inbuf->inputstate &= ~INS_DLE_char; + switch (c) { + case 'X': /*begin of command*/ +#ifdef CONFIG_GIGASET_DEBUG + if (inbuf->inputstate & INS_command) + err("received <DLE> 'X' in command mode"); +#endif + inbuf->inputstate |= + INS_command | INS_DLE_command; + break; + case '.': /*end of command*/ +#ifdef CONFIG_GIGASET_DEBUG + if (!(inbuf->inputstate & INS_command)) + err("received <DLE> '.' in hdlc mode"); +#endif + inbuf->inputstate &= cs->dle ? + ~(INS_DLE_command|INS_command) + : ~INS_DLE_command; + break; + //case DLE_FLAG: /*DLE_FLAG in data stream*/ /* schon oben behandelt! */ + default: + err("received 0x10 0x%02x!", (int) c); + /* FIXME: reset driver?? */ + } + } + } +nextbyte: + if (!numbytes) { + /* end of buffer, check for wrap */ + if (head > tail) { + head = 0; + src = inbuf->data; + numbytes = tail; + } else { + head = tail; + break; + } + } + } + + dbg(DEBUG_INTR, "setting head to %u", head); + atomic_set(&inbuf->head, head); + } +} + + +/* == data output ========================================================== */ + +/* Encoding of a PPP packet into an octet stuffed HDLC frame + * with FCS, opening and closing flags. + * parameters: + * skb skb containing original packet (freed upon return) + * head number of headroom bytes to allocate in result skb + * tail number of tailroom bytes to allocate in result skb + * Return value: + * pointer to newly allocated skb containing the result frame + */ +static struct sk_buff *HDLC_Encode(struct sk_buff *skb, int head, int tail) +{ + struct sk_buff *hdlc_skb; + __u16 fcs; + unsigned char c; + unsigned char *cp; + int len; + unsigned int stuf_cnt; + + stuf_cnt = 0; + fcs = PPP_INITFCS; + cp = skb->data; + len = skb->len; + while (len--) { + if (muststuff(*cp)) + stuf_cnt++; + fcs = crc_ccitt_byte(fcs, *cp++); + } + fcs ^= 0xffff; /* complement */ + + /* size of new buffer: original size + number of stuffing bytes + * + 2 bytes FCS + 2 stuffing bytes for FCS (if needed) + 2 flag bytes + */ + hdlc_skb = dev_alloc_skb(skb->len + stuf_cnt + 6 + tail + head); + if (!hdlc_skb) { + err("unable to allocate memory for HDLC encoding!"); + dev_kfree_skb(skb); + return NULL; + } + skb_reserve(hdlc_skb, head); + + /* Copy acknowledge request into new skb */ + memcpy(hdlc_skb->head, skb->head, 2); + + /* Add flag sequence in front of everything.. */ + *(skb_put(hdlc_skb, 1)) = PPP_FLAG; + + /* Perform byte stuffing while copying data. */ + while (skb->len--) { + if (muststuff(*skb->data)) { + *(skb_put(hdlc_skb, 1)) = PPP_ESCAPE; + *(skb_put(hdlc_skb, 1)) = (*skb->data++) ^ PPP_TRANS; + } else + *(skb_put(hdlc_skb, 1)) = *skb->data++; + } + + /* Finally add FCS (byte stuffed) and flag sequence */ + c = (fcs & 0x00ff); /* least significant byte first */ + if (muststuff(c)) { + *(skb_put(hdlc_skb, 1)) = PPP_ESCAPE; + c ^= PPP_TRANS; + } + *(skb_put(hdlc_skb, 1)) = c; + + c = ((fcs >> 8) & 0x00ff); + if (muststuff(c)) { + *(skb_put(hdlc_skb, 1)) = PPP_ESCAPE; + c ^= PPP_TRANS; + } + *(skb_put(hdlc_skb, 1)) = c; + + *(skb_put(hdlc_skb, 1)) = PPP_FLAG; + + dev_kfree_skb(skb); + return hdlc_skb; +} + +/* Encoding of a raw packet into an octet stuffed bit inverted frame + * parameters: + * skb skb containing original packet (freed upon return) + * head number of headroom bytes to allocate in result skb + * tail number of tailroom bytes to allocate in result skb + * Return value: + * pointer to newly allocated skb containing the result frame + */ +static struct sk_buff *iraw_encode(struct sk_buff *skb, int head, int tail) +{ + struct sk_buff *iraw_skb; + unsigned char c; + unsigned char *cp; + int len; + + /* worst case: every byte must be stuffed */ + iraw_skb = dev_alloc_skb(2*skb->len + tail + head); + if (!iraw_skb) { + err("unable to allocate memory for HDLC encoding!"); + dev_kfree_skb(skb); + return NULL; + } + skb_reserve(iraw_skb, head); + + cp = skb->data; + len = skb->len; + while (len--) { + c = gigaset_invtab[*cp++]; + if (c == DLE_FLAG) + *(skb_put(iraw_skb, 1)) = c; + *(skb_put(iraw_skb, 1)) = c; + } + dev_kfree_skb(skb); + return iraw_skb; +} + +/* gigaset_send_skb + * called by common.c to queue an skb for sending + * and start transmission if necessary + * parameters: + * B Channel control structure + * skb + * Return value: + * number of bytes accepted for sending + * (skb->len if ok, 0 if out of buffer space) + * or error code (< 0, eg. -EINVAL) + */ +int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb) +{ + unsigned len; + + IFNULLRETVAL(bcs, -EFAULT); + IFNULLRETVAL(skb, -EFAULT); + len = skb->len; + + if (bcs->proto2 == ISDN_PROTO_L2_HDLC) + skb = HDLC_Encode(skb, HW_HDR_LEN, 0); + else + skb = iraw_encode(skb, HW_HDR_LEN, 0); + if (!skb) + return -ENOMEM; + + skb_queue_tail(&bcs->squeue, skb); + tasklet_schedule(&bcs->cs->write_tasklet); + + return len; /* ok so far */ +} diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c new file mode 100644 index 00000000000..31f0f07832b --- /dev/null +++ b/drivers/isdn/gigaset/bas-gigaset.c @@ -0,0 +1,2365 @@ +/* + * USB driver for Gigaset 307x base via direct USB connection. + * + * Copyright (c) 2001 by Hansjoerg Lipp <hjlipp@web.de>, + * Tilman Schmidt <tilman@imap.cc>, + * Stefan Eilers <Eilers.Stefan@epost.de>. + * + * Based on usb-gigaset.c. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: bas-gigaset.c,v 1.52.4.19 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" + +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/timer.h> +#include <linux/usb.h> +#include <linux/module.h> +#include <linux/moduleparam.h> + +/* Version Information */ +#define DRIVER_AUTHOR "Tilman Schmidt <tilman@imap.cc>, Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>" +#define DRIVER_DESC "USB Driver for Gigaset 307x" + + +/* Module parameters */ + +static int startmode = SM_ISDN; +static int cidmode = 1; + +module_param(startmode, int, S_IRUGO); +module_param(cidmode, int, S_IRUGO); +MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); +MODULE_PARM_DESC(cidmode, "Call-ID mode"); + +#define GIGASET_MINORS 1 +#define GIGASET_MINOR 16 +#define GIGASET_MODULENAME "bas_gigaset" +#define GIGASET_DEVFSNAME "gig/bas/" +#define GIGASET_DEVNAME "ttyGB" + +#define IF_WRITEBUF 256 //FIXME + +/* Values for the Gigaset 307x */ +#define USB_GIGA_VENDOR_ID 0x0681 +#define USB_GIGA_PRODUCT_ID 0x0001 +#define USB_4175_PRODUCT_ID 0x0002 +#define USB_SX303_PRODUCT_ID 0x0021 +#define USB_SX353_PRODUCT_ID 0x0022 + +/* table of devices that work with this driver */ +static struct usb_device_id gigaset_table [] = { + { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_GIGA_PRODUCT_ID) }, + { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_4175_PRODUCT_ID) }, + { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX303_PRODUCT_ID) }, + { USB_DEVICE(USB_GIGA_VENDOR_ID, USB_SX353_PRODUCT_ID) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, gigaset_table); + +/* Get a minor range for your devices from the usb maintainer */ +#define USB_SKEL_MINOR_BASE 200 + +/*======================= local function prototypes =============================*/ + +/* This function is called if a new device is connected to the USB port. It + * checks whether this new device belongs to this driver. + */ +static int gigaset_probe(struct usb_interface *interface, + const struct usb_device_id *id); + +/* Function will be called if the device is unplugged */ +static void gigaset_disconnect(struct usb_interface *interface); + + +/*==============================================================================*/ + +struct bas_cardstate { + struct usb_device *udev; /* USB device pointer */ + struct usb_interface *interface; /* interface for this device */ + unsigned char minor; /* starting minor number */ + + struct urb *urb_ctrl; /* control pipe default URB */ + struct usb_ctrlrequest dr_ctrl; + struct timer_list timer_ctrl; /* control request timeout */ + + struct timer_list timer_atrdy; /* AT command ready timeout */ + struct urb *urb_cmd_out; /* for sending AT commands */ + struct usb_ctrlrequest dr_cmd_out; + int retry_cmd_out; + + struct urb *urb_cmd_in; /* for receiving AT replies */ + struct usb_ctrlrequest dr_cmd_in; + struct timer_list timer_cmd_in; /* receive request timeout */ + unsigned char *rcvbuf; /* AT reply receive buffer */ + + struct urb *urb_int_in; /* URB for interrupt pipe */ + unsigned char int_in_buf[3]; + + spinlock_t lock; /* locks all following */ + atomic_t basstate; /* bitmap (BS_*) */ + int pending; /* uncompleted base request */ + int rcvbuf_size; /* size of AT receive buffer */ + /* 0: no receive in progress */ + int retry_cmd_in; /* receive req retry count */ +}; + +/* status of direct USB connection to 307x base (bits in basstate) */ +#define BS_ATOPEN 0x001 +#define BS_B1OPEN 0x002 +#define BS_B2OPEN 0x004 +#define BS_ATREADY 0x008 +#define BS_INIT 0x010 +#define BS_ATTIMER 0x020 + + +static struct gigaset_driver *driver = NULL; +static struct cardstate *cardstate = NULL; + +/* usb specific object needed to register this driver with the usb subsystem */ +static struct usb_driver gigaset_usb_driver = { + .name = GIGASET_MODULENAME, + .probe = gigaset_probe, + .disconnect = gigaset_disconnect, + .id_table = gigaset_table, +}; + +/* get message text for USB status code + */ +static char *get_usb_statmsg(int status) +{ + static char unkmsg[28]; + + switch (status) { + case 0: + return "success"; + case -ENOENT: + return "canceled"; + case -ECONNRESET: + return "canceled (async)"; + case -EINPROGRESS: + return "pending"; + case -EPROTO: + return "bit stuffing or unknown USB error"; + case -EILSEQ: + return "Illegal byte sequence (CRC mismatch)"; + case -EPIPE: + return "babble detect or endpoint stalled"; + case -ENOSR: + return "buffer error"; + case -ETIMEDOUT: + return "timed out"; + case -ENODEV: + return "device not present"; + case -EREMOTEIO: + return "short packet detected"; + case -EXDEV: + return "partial isochronous transfer"; + case -EINVAL: + return "invalid argument"; + case -ENXIO: + return "URB already queued"; + case -EAGAIN: + return "isochronous start frame too early or too much scheduled"; + case -EFBIG: + return "too many isochronous frames requested"; + case -EMSGSIZE: + return "endpoint message size zero"; + case -ESHUTDOWN: + return "endpoint shutdown"; + case -EBUSY: + return "another request pending"; + default: + snprintf(unkmsg, sizeof(unkmsg), "unknown error %d", status); + return unkmsg; + } +} + +/* usb_pipetype_str + * retrieve string representation of USB pipe type + */ +static inline char *usb_pipetype_str(int pipe) +{ + if (usb_pipeisoc(pipe)) + return "Isoc"; + if (usb_pipeint(pipe)) + return "Int"; + if (usb_pipecontrol(pipe)) + return "Ctrl"; + if (usb_pipebulk(pipe)) + return "Bulk"; + return "?"; +} + +/* dump_urb + * write content of URB to syslog for debugging + */ +static inline void dump_urb(enum debuglevel level, const char *tag, + struct urb *urb) +{ +#ifdef CONFIG_GIGASET_DEBUG + int i; + IFNULLRET(tag); + dbg(level, "%s urb(0x%08lx)->{", tag, (unsigned long) urb); + if (urb) { + dbg(level, + " dev=0x%08lx, pipe=%s:EP%d/DV%d:%s, " + "status=%d, hcpriv=0x%08lx, transfer_flags=0x%x,", + (unsigned long) urb->dev, + usb_pipetype_str(urb->pipe), + usb_pipeendpoint(urb->pipe), usb_pipedevice(urb->pipe), + usb_pipein(urb->pipe) ? "in" : "out", + urb->status, (unsigned long) urb->hcpriv, + urb->transfer_flags); + dbg(level, + " transfer_buffer=0x%08lx[%d], actual_length=%d, " + "bandwidth=%d, setup_packet=0x%08lx,", + (unsigned long) urb->transfer_buffer, + urb->transfer_buffer_length, urb->actual_length, + urb->bandwidth, (unsigned long) urb->setup_packet); + dbg(level, + " start_frame=%d, number_of_packets=%d, interval=%d, " + "error_count=%d,", + urb->start_frame, urb->number_of_packets, urb->interval, + urb->error_count); + dbg(level, + " context=0x%08lx, complete=0x%08lx, iso_frame_desc[]={", + (unsigned long) urb->context, + (unsigned long) urb->complete); + for (i = 0; i < urb->number_of_packets; i++) { + struct usb_iso_packet_descriptor *pifd = &urb->iso_frame_desc[i]; + dbg(level, + " {offset=%u, length=%u, actual_length=%u, " + "status=%u}", + pifd->offset, pifd->length, pifd->actual_length, + pifd->status); + } + } + dbg(level, "}}"); +#endif +} + +/* read/set modem control bits etc. (m10x only) */ +static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, + unsigned new_state) +{ + return -EINVAL; +} + +static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) +{ + return -EINVAL; +} + +static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) +{ + return -EINVAL; +} + +/* error_hangup + * hang up any existing connection because of an unrecoverable error + * This function may be called from any context and takes care of scheduling + * the necessary actions for execution outside of interrupt context. + * argument: + * B channel control structure + */ +static inline void error_hangup(struct bc_state *bcs) +{ + struct cardstate *cs = bcs->cs; + + dbg(DEBUG_ANY, + "%s: scheduling HUP for channel %d", __func__, bcs->channel); + + if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) { + //FIXME what should we do? + return; + } + + gigaset_schedule_event(cs); +} + +/* error_reset + * reset Gigaset device because of an unrecoverable error + * This function may be called from any context and takes care of scheduling + * the necessary actions for execution outside of interrupt context. + * argument: + * controller state structure + */ +static inline void error_reset(struct cardstate *cs) +{ + //FIXME try to recover without bothering the user + err("unrecoverable error - please disconnect the Gigaset base to reset"); +} + +/* check_pending + * check for completion of pending control request + * parameter: + * urb USB request block of completed request + * urb->context = hardware specific controller state structure + */ +static void check_pending(struct bas_cardstate *ucs) +{ + unsigned long flags; + + IFNULLRET(ucs); + IFNULLRET(cardstate); + + spin_lock_irqsave(&ucs->lock, flags); + switch (ucs->pending) { + case 0: + break; + case HD_OPEN_ATCHANNEL: + if (atomic_read(&ucs->basstate) & BS_ATOPEN) + ucs->pending = 0; + break; + case HD_OPEN_B1CHANNEL: + if (atomic_read(&ucs->basstate) & BS_B1OPEN) + ucs->pending = 0; + break; + case HD_OPEN_B2CHANNEL: + if (atomic_read(&ucs->basstate) & BS_B2OPEN) + ucs->pending = 0; + break; + case HD_CLOSE_ATCHANNEL: + if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) + ucs->pending = 0; + //wake_up_interruptible(cs->initwait); + //FIXME need own wait queue? + break; + case HD_CLOSE_B1CHANNEL: + if (!(atomic_read(&ucs->basstate) & BS_B1OPEN)) + ucs->pending = 0; + break; + case HD_CLOSE_B2CHANNEL: + if (!(atomic_read(&ucs->basstate) & BS_B2OPEN)) + ucs->pending = 0; + break; + case HD_DEVICE_INIT_ACK: /* no reply expected */ + ucs->pending = 0; + break; + /* HD_READ_ATMESSAGE, HD_WRITE_ATMESSAGE, HD_RESET_INTERRUPTPIPE + * are handled separately and should never end up here + */ + default: + warn("unknown pending request 0x%02x cleared", ucs->pending); + ucs->pending = 0; + } + + if (!ucs->pending) + del_timer(&ucs->timer_ctrl); + + spin_unlock_irqrestore(&ucs->lock, flags); +} + +/* cmd_in_timeout + * timeout routine for command input request + * argument: + * controller state structure + */ +static void cmd_in_timeout(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + struct bas_cardstate *ucs; + unsigned long flags; + + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + spin_lock_irqsave(&cs->lock, flags); + if (!atomic_read(&cs->connected)) { + dbg(DEBUG_USBREQ, "%s: disconnected", __func__); + spin_unlock_irqrestore(&cs->lock, flags); + return; + } + if (!ucs->rcvbuf_size) { + dbg(DEBUG_USBREQ, "%s: no receive in progress", __func__); + spin_unlock_irqrestore(&cs->lock, flags); + return; + } + spin_unlock_irqrestore(&cs->lock, flags); + + err("timeout reading AT response"); + error_reset(cs); //FIXME retry? +} + + +static void read_ctrl_callback(struct urb *urb, struct pt_regs *regs); + +/* atread_submit + * submit an HD_READ_ATMESSAGE command URB + * parameters: + * cs controller state structure + * timeout timeout in 1/10 sec., 0: none + * return value: + * 0 on success + * -EINVAL if a NULL pointer is encountered somewhere + * -EBUSY if another request is pending + * any URB submission error code + */ +static int atread_submit(struct cardstate *cs, int timeout) +{ + struct bas_cardstate *ucs; + int ret; + + IFNULLRETVAL(cs, -EINVAL); + ucs = cs->hw.bas; + IFNULLRETVAL(ucs, -EINVAL); + IFNULLRETVAL(ucs->urb_cmd_in, -EINVAL); + + dbg(DEBUG_USBREQ, "-------> HD_READ_ATMESSAGE (%d)", ucs->rcvbuf_size); + + if (ucs->urb_cmd_in->status == -EINPROGRESS) { + err("could not submit HD_READ_ATMESSAGE: URB busy"); + return -EBUSY; + } + + ucs->dr_cmd_in.bRequestType = IN_VENDOR_REQ; + ucs->dr_cmd_in.bRequest = HD_READ_ATMESSAGE; + ucs->dr_cmd_in.wValue = 0; + ucs->dr_cmd_in.wIndex = 0; + ucs->dr_cmd_in.wLength = cpu_to_le16(ucs->rcvbuf_size); + usb_fill_control_urb(ucs->urb_cmd_in, ucs->udev, + usb_rcvctrlpipe(ucs->udev, 0), + (unsigned char*) & ucs->dr_cmd_in, + ucs->rcvbuf, ucs->rcvbuf_size, + read_ctrl_callback, cs->inbuf); + + if ((ret = usb_submit_urb(ucs->urb_cmd_in, SLAB_ATOMIC)) != 0) { + err("could not submit HD_READ_ATMESSAGE: %s", + get_usb_statmsg(ret)); + return ret; + } + + if (timeout > 0) { + dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); + ucs->timer_cmd_in.expires = jiffies + timeout * HZ / 10; + ucs->timer_cmd_in.data = (unsigned long) cs; + ucs->timer_cmd_in.function = cmd_in_timeout; + add_timer(&ucs->timer_cmd_in); + } + return 0; +} + +static void stopurbs(struct bas_bc_state *); +static int start_cbsend(struct cardstate *); + +/* set/clear bits in base connection state + */ +inline static void update_basstate(struct bas_cardstate *ucs, + int set, int clear) +{ + unsigned long flags; + int state; + + spin_lock_irqsave(&ucs->lock, flags); + state = atomic_read(&ucs->basstate); + state &= ~clear; + state |= set; + atomic_set(&ucs->basstate, state); + spin_unlock_irqrestore(&ucs->lock, flags); +} + + +/* read_int_callback + * USB completion handler for interrupt pipe input + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block + * urb->context = controller state structure + */ +static void read_int_callback(struct urb *urb, struct pt_regs *regs) +{ + struct cardstate *cs; + struct bas_cardstate *ucs; + struct bc_state *bcs; + unsigned long flags; + int status; + unsigned l; + int channel; + + IFNULLRET(urb); + cs = (struct cardstate *) urb->context; + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + if (unlikely(!atomic_read(&cs->connected))) { + warn("%s: disconnected", __func__); + return; + } + + switch (urb->status) { + case 0: /* success */ + break; + case -ENOENT: /* canceled */ + case -ECONNRESET: /* canceled (async) */ + case -EINPROGRESS: /* pending */ + /* ignore silently */ + dbg(DEBUG_USBREQ, + "%s: %s", __func__, get_usb_statmsg(urb->status)); + return; + default: /* severe trouble */ + warn("interrupt read: %s", get_usb_statmsg(urb->status)); + //FIXME corrective action? resubmission always ok? + goto resubmit; + } + + l = (unsigned) ucs->int_in_buf[1] + + (((unsigned) ucs->int_in_buf[2]) << 8); + + dbg(DEBUG_USBREQ, + "<-------%d: 0x%02x (%u [0x%02x 0x%02x])", urb->actual_length, + (int)ucs->int_in_buf[0], l, + (int)ucs->int_in_buf[1], (int)ucs->int_in_buf[2]); + + channel = 0; + + switch (ucs->int_in_buf[0]) { + case HD_DEVICE_INIT_OK: + update_basstate(ucs, BS_INIT, 0); + break; + + case HD_READY_SEND_ATDATA: + del_timer(&ucs->timer_atrdy); + update_basstate(ucs, BS_ATREADY, BS_ATTIMER); + start_cbsend(cs); + break; + + case HD_OPEN_B2CHANNEL_ACK: + ++channel; + case HD_OPEN_B1CHANNEL_ACK: + bcs = cs->bcs + channel; + update_basstate(ucs, BS_B1OPEN << channel, 0); + gigaset_bchannel_up(bcs); + break; + + case HD_OPEN_ATCHANNEL_ACK: + update_basstate(ucs, BS_ATOPEN, 0); + start_cbsend(cs); + break; + + case HD_CLOSE_B2CHANNEL_ACK: + ++channel; + case HD_CLOSE_B1CHANNEL_ACK: + bcs = cs->bcs + channel; + update_basstate(ucs, 0, BS_B1OPEN << channel); + stopurbs(bcs->hw.bas); + gigaset_bchannel_down(bcs); + break; + + case HD_CLOSE_ATCHANNEL_ACK: + update_basstate(ucs, 0, BS_ATOPEN); + break; + + case HD_B2_FLOW_CONTROL: + ++channel; + case HD_B1_FLOW_CONTROL: + bcs = cs->bcs + channel; + atomic_add((l - BAS_NORMFRAME) * BAS_CORRFRAMES, + &bcs->hw.bas->corrbytes); + dbg(DEBUG_ISO, + "Flow control (channel %d, sub %d): 0x%02x => %d", + channel, bcs->hw.bas->numsub, l, + atomic_read(&bcs->hw.bas->corrbytes)); + break; + + case HD_RECEIVEATDATA_ACK: /* AT response ready to be received */ + if (!l) { + warn("HD_RECEIVEATDATA_ACK with length 0 ignored"); + break; + } + spin_lock_irqsave(&cs->lock, flags); + if (ucs->rcvbuf_size) { + spin_unlock_irqrestore(&cs->lock, flags); + err("receive AT data overrun, %d bytes lost", l); + error_reset(cs); //FIXME reschedule + break; + } + if ((ucs->rcvbuf = kmalloc(l, GFP_ATOMIC)) == NULL) { + spin_unlock_irqrestore(&cs->lock, flags); + err("%s: out of memory, %d bytes lost", __func__, l); + error_reset(cs); //FIXME reschedule + break; + } + ucs->rcvbuf_size = l; + ucs->retry_cmd_in = 0; + if ((status = atread_submit(cs, BAS_TIMEOUT)) < 0) { + kfree(ucs->rcvbuf); + ucs->rcvbuf = NULL; + ucs->rcvbuf_size = 0; + error_reset(cs); //FIXME reschedule + } + spin_unlock_irqrestore(&cs->lock, flags); + break; + + case HD_RESET_INTERRUPT_PIPE_ACK: + dbg(DEBUG_USBREQ, "HD_RESET_INTERRUPT_PIPE_ACK"); + break; + + case HD_SUSPEND_END: + dbg(DEBUG_USBREQ, "HD_SUSPEND_END"); + break; + + default: + warn("unknown Gigaset signal 0x%02x (%u) ignored", + (int) ucs->int_in_buf[0], l); + } + + check_pending(ucs); + +resubmit: + status = usb_submit_urb(urb, SLAB_ATOMIC); + if (unlikely(status)) { + err("could not resubmit interrupt URB: %s", + get_usb_statmsg(status)); + error_reset(cs); + } +} + +/* read_ctrl_callback + * USB completion handler for control pipe input + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block + * urb->context = inbuf structure for controller state + */ +static void read_ctrl_callback(struct urb *urb, struct pt_regs *regs) +{ + struct cardstate *cs; + struct bas_cardstate *ucs; + unsigned numbytes; + unsigned long flags; + struct inbuf_t *inbuf; + int have_data = 0; + + IFNULLRET(urb); + inbuf = (struct inbuf_t *) urb->context; + IFNULLRET(inbuf); + cs = inbuf->cs; + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + spin_lock_irqsave(&cs->lock, flags); + if (!atomic_read(&cs->connected)) { + warn("%s: disconnected", __func__); + spin_unlock_irqrestore(&cs->lock, flags); + return; + } + + if (!ucs->rcvbuf_size) { + warn("%s: no receive in progress", __func__); + spin_unlock_irqrestore(&cs->lock, flags); + return; + } + + del_timer(&ucs->timer_cmd_in); + + switch (urb->status) { + case 0: /* normal completion */ + numbytes = urb->actual_length; + if (unlikely(numbytes == 0)) { + warn("control read: empty block received"); + goto retry; + } + if (unlikely(numbytes != ucs->rcvbuf_size)) { + warn("control read: received %d chars, expected %d", + numbytes, ucs->rcvbuf_size); + if (numbytes > ucs->rcvbuf_size) + numbytes = ucs->rcvbuf_size; + } + + /* copy received bytes to inbuf */ + have_data = gigaset_fill_inbuf(inbuf, ucs->rcvbuf, numbytes); + + if (unlikely(numbytes < ucs->rcvbuf_size)) { + /* incomplete - resubmit for remaining bytes */ + ucs->rcvbuf_size -= numbytes; + ucs->retry_cmd_in = 0; + goto retry; + } + break; + + case -ENOENT: /* canceled */ + case -ECONNRESET: /* canceled (async) */ + case -EINPROGRESS: /* pending */ + /* no action necessary */ + dbg(DEBUG_USBREQ, + "%s: %s", __func__, get_usb_statmsg(urb->status)); + break; + + default: /* severe trouble */ + warn("control read: %s", get_usb_statmsg(urb->status)); + retry: + if (ucs->retry_cmd_in++ < BAS_RETRY) { + notice("control read: retry %d", ucs->retry_cmd_in); + if (atread_submit(cs, BAS_TIMEOUT) >= 0) { + /* resubmitted - bypass regular exit block */ + spin_unlock_irqrestore(&cs->lock, flags); + return; + } + } else { + err("control read: giving up after %d tries", + ucs->retry_cmd_in); + } + error_reset(cs); + } + + kfree(ucs->rcvbuf); + ucs->rcvbuf = NULL; + ucs->rcvbuf_size = 0; + spin_unlock_irqrestore(&cs->lock, flags); + if (have_data) { + dbg(DEBUG_INTR, "%s-->BH", __func__); + gigaset_schedule_event(cs); + } +} + +/* read_iso_callback + * USB completion handler for B channel isochronous input + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block of completed request + * urb->context = bc_state structure + */ +static void read_iso_callback(struct urb *urb, struct pt_regs *regs) +{ + struct bc_state *bcs; + struct bas_bc_state *ubc; + unsigned long flags; + int i, rc; + + IFNULLRET(urb); + IFNULLRET(urb->context); + IFNULLRET(cardstate); + + /* status codes not worth bothering the tasklet with */ + if (unlikely(urb->status == -ENOENT || urb->status == -ECONNRESET || + urb->status == -EINPROGRESS)) { + dbg(DEBUG_ISO, + "%s: %s", __func__, get_usb_statmsg(urb->status)); + return; + } + + bcs = (struct bc_state *) urb->context; + ubc = bcs->hw.bas; + IFNULLRET(ubc); + + spin_lock_irqsave(&ubc->isoinlock, flags); + if (likely(ubc->isoindone == NULL)) { + /* pass URB to tasklet */ + ubc->isoindone = urb; + tasklet_schedule(&ubc->rcvd_tasklet); + } else { + /* tasklet still busy, drop data and resubmit URB */ + ubc->loststatus = urb->status; + for (i = 0; i < BAS_NUMFRAMES; i++) { + ubc->isoinlost += urb->iso_frame_desc[i].actual_length; + if (unlikely(urb->iso_frame_desc[i].status != 0 && + urb->iso_frame_desc[i].status != -EINPROGRESS)) { + ubc->loststatus = urb->iso_frame_desc[i].status; + } + urb->iso_frame_desc[i].status = 0; + urb->iso_frame_desc[i].actual_length = 0; + } + if (likely(atomic_read(&ubc->running))) { + urb->dev = bcs->cs->hw.bas->udev; /* clobbered by USB subsystem */ + urb->transfer_flags = URB_ISO_ASAP; + urb->number_of_packets = BAS_NUMFRAMES; + dbg(DEBUG_ISO, "%s: isoc read overrun/resubmit", __func__); + rc = usb_submit_urb(urb, SLAB_ATOMIC); + if (unlikely(rc != 0)) { + err("could not resubmit isochronous read URB: %s", + get_usb_statmsg(rc)); + dump_urb(DEBUG_ISO, "isoc read", urb); + error_hangup(bcs); + } + } + } + spin_unlock_irqrestore(&ubc->isoinlock, flags); +} + +/* write_iso_callback + * USB completion handler for B channel isochronous output + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block of completed request + * urb->context = isow_urbctx_t structure + */ +static void write_iso_callback(struct urb *urb, struct pt_regs *regs) +{ + struct isow_urbctx_t *ucx; + struct bas_bc_state *ubc; + unsigned long flags; + + IFNULLRET(urb); + IFNULLRET(urb->context); + IFNULLRET(cardstate); + + /* status codes not worth bothering the tasklet with */ + if (unlikely(urb->status == -ENOENT || urb->status == -ECONNRESET || + urb->status == -EINPROGRESS)) { + dbg(DEBUG_ISO, + "%s: %s", __func__, get_usb_statmsg(urb->status)); + return; + } + + /* pass URB context to tasklet */ + ucx = (struct isow_urbctx_t *) urb->context; + IFNULLRET(ucx->bcs); + ubc = ucx->bcs->hw.bas; + IFNULLRET(ubc); + + spin_lock_irqsave(&ubc->isooutlock, flags); + ubc->isooutovfl = ubc->isooutdone; + ubc->isooutdone = ucx; + spin_unlock_irqrestore(&ubc->isooutlock, flags); + tasklet_schedule(&ubc->sent_tasklet); +} + +/* starturbs + * prepare and submit USB request blocks for isochronous input and output + * argument: + * B channel control structure + * return value: + * 0 on success + * < 0 on error (no URBs submitted) + */ +static int starturbs(struct bc_state *bcs) +{ + struct urb *urb; + struct bas_bc_state *ubc; + int j, k; + int rc; + + IFNULLRETVAL(bcs, -EFAULT); + ubc = bcs->hw.bas; + IFNULLRETVAL(ubc, -EFAULT); + + /* initialize L2 reception */ + if (bcs->proto2 == ISDN_PROTO_L2_HDLC) + bcs->inputstate |= INS_flag_hunt; + + /* submit all isochronous input URBs */ + atomic_set(&ubc->running, 1); + for (k = 0; k < BAS_INURBS; k++) { + urb = ubc->isoinurbs[k]; + if (!urb) { + err("isoinurbs[%d]==NULL", k); + rc = -EFAULT; + goto error; + } + + urb->dev = bcs->cs->hw.bas->udev; + urb->pipe = usb_rcvisocpipe(urb->dev, 3 + 2 * bcs->channel); + urb->transfer_flags = URB_ISO_ASAP; + urb->transfer_buffer = ubc->isoinbuf + k * BAS_INBUFSIZE; + urb->transfer_buffer_length = BAS_INBUFSIZE; + urb->number_of_packets = BAS_NUMFRAMES; + urb->interval = BAS_FRAMETIME; + urb->complete = read_iso_callback; + urb->context = bcs; + for (j = 0; j < BAS_NUMFRAMES; j++) { + urb->iso_frame_desc[j].offset = j * BAS_MAXFRAME; + urb->iso_frame_desc[j].length = BAS_MAXFRAME; + urb->iso_frame_desc[j].status = 0; + urb->iso_frame_desc[j].actual_length = 0; + } + + dump_urb(DEBUG_ISO, "Initial isoc read", urb); + if ((rc = usb_submit_urb(urb, SLAB_ATOMIC)) != 0) { + err("could not submit isochronous read URB %d: %s", + k, get_usb_statmsg(rc)); + goto error; + } + } + + /* initialize L2 transmission */ + gigaset_isowbuf_init(ubc->isooutbuf, PPP_FLAG); + + /* set up isochronous output URBs for flag idling */ + for (k = 0; k < BAS_OUTURBS; ++k) { + urb = ubc->isoouturbs[k].urb; + if (!urb) { + err("isoouturbs[%d].urb==NULL", k); + rc = -EFAULT; + goto error; + } + urb->dev = bcs->cs->hw.bas->udev; + urb->pipe = usb_sndisocpipe(urb->dev, 4 + 2 * bcs->channel); + urb->transfer_flags = URB_ISO_ASAP; + urb->transfer_buffer = ubc->isooutbuf->data; + urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); + urb->number_of_packets = BAS_NUMFRAMES; + urb->interval = BAS_FRAMETIME; + urb->complete = write_iso_callback; + urb->context = &ubc->isoouturbs[k]; + for (j = 0; j < BAS_NUMFRAMES; ++j) { + urb->iso_frame_desc[j].offset = BAS_OUTBUFSIZE; + urb->iso_frame_desc[j].length = BAS_NORMFRAME; + urb->iso_frame_desc[j].status = 0; + urb->iso_frame_desc[j].actual_length = 0; + } + ubc->isoouturbs[k].limit = -1; + } + + /* submit two URBs, keep third one */ + for (k = 0; k < 2; ++k) { + dump_urb(DEBUG_ISO, "Initial isoc write", urb); + rc = usb_submit_urb(ubc->isoouturbs[k].urb, SLAB_ATOMIC); + if (rc != 0) { + err("could not submit isochronous write URB %d: %s", + k, get_usb_statmsg(rc)); + goto error; + } + } + dump_urb(DEBUG_ISO, "Initial isoc write (free)", urb); + ubc->isooutfree = &ubc->isoouturbs[2]; + ubc->isooutdone = ubc->isooutovfl = NULL; + return 0; + error: + stopurbs(ubc); + return rc; +} + +/* stopurbs + * cancel the USB request blocks for isochronous input and output + * errors are silently ignored + * argument: + * B channel control structure + */ +static void stopurbs(struct bas_bc_state *ubc) +{ + int k, rc; + + IFNULLRET(ubc); + + atomic_set(&ubc->running, 0); + + for (k = 0; k < BAS_INURBS; ++k) { + rc = usb_unlink_urb(ubc->isoinurbs[k]); + dbg(DEBUG_ISO, "%s: isoc input URB %d unlinked, result = %d", + __func__, k, rc); + } + + for (k = 0; k < BAS_OUTURBS; ++k) { + rc = usb_unlink_urb(ubc->isoouturbs[k].urb); + dbg(DEBUG_ISO, "%s: isoc output URB %d unlinked, result = %d", + __func__, k, rc); + } +} + +/* Isochronous Write - Bottom Half */ +/* =============================== */ + +/* submit_iso_write_urb + * fill and submit the next isochronous write URB + * parameters: + * bcs B channel state structure + * return value: + * number of frames submitted in URB + * 0 if URB not submitted because no data available (isooutbuf busy) + * error code < 0 on error + */ +static int submit_iso_write_urb(struct isow_urbctx_t *ucx) +{ + struct urb *urb; + struct bas_bc_state *ubc; + struct usb_iso_packet_descriptor *ifd; + int corrbytes, nframe, rc; + + IFNULLRETVAL(ucx, -EFAULT); + urb = ucx->urb; + IFNULLRETVAL(urb, -EFAULT); + IFNULLRETVAL(ucx->bcs, -EFAULT); + ubc = ucx->bcs->hw.bas; + IFNULLRETVAL(ubc, -EFAULT); + + urb->dev = ucx->bcs->cs->hw.bas->udev; /* clobbered by USB subsystem */ + urb->transfer_flags = URB_ISO_ASAP; + urb->transfer_buffer = ubc->isooutbuf->data; + urb->transfer_buffer_length = sizeof(ubc->isooutbuf->data); + + for (nframe = 0; nframe < BAS_NUMFRAMES; nframe++) { + ifd = &urb->iso_frame_desc[nframe]; + + /* compute frame length according to flow control */ + ifd->length = BAS_NORMFRAME; + if ((corrbytes = atomic_read(&ubc->corrbytes)) != 0) { + dbg(DEBUG_ISO, "%s: corrbytes=%d", __func__, corrbytes); + if (corrbytes > BAS_HIGHFRAME - BAS_NORMFRAME) + corrbytes = BAS_HIGHFRAME - BAS_NORMFRAME; + else if (corrbytes < BAS_LOWFRAME - BAS_NORMFRAME) + corrbytes = BAS_LOWFRAME - BAS_NORMFRAME; + ifd->length += corrbytes; + atomic_add(-corrbytes, &ubc->corrbytes); + } + //dbg(DEBUG_ISO, "%s: frame %d length=%d", __func__, nframe, ifd->length); + + /* retrieve block of data to send */ + ifd->offset = gigaset_isowbuf_getbytes(ubc->isooutbuf, ifd->length); + if (ifd->offset < 0) { + if (ifd->offset == -EBUSY) { + dbg(DEBUG_ISO, "%s: buffer busy at frame %d", + __func__, nframe); + /* tasklet will be restarted from gigaset_send_skb() */ + } else { + err("%s: buffer error %d at frame %d", + __func__, ifd->offset, nframe); + return ifd->offset; + } + break; + } + ucx->limit = atomic_read(&ubc->isooutbuf->nextread); + ifd->status = 0; + ifd->actual_length = 0; + } + if ((urb->number_of_packets = nframe) > 0) { + if ((rc = usb_submit_urb(urb, SLAB_ATOMIC)) != 0) { + err("could not submit isochronous write URB: %s", + get_usb_statmsg(rc)); + dump_urb(DEBUG_ISO, "isoc write", urb); + return rc; + } + ++ubc->numsub; + } + return nframe; +} + +/* write_iso_tasklet + * tasklet scheduled when an isochronous output URB from the Gigaset device + * has completed + * parameter: + * data B channel state structure + */ +static void write_iso_tasklet(unsigned long data) +{ + struct bc_state *bcs; + struct bas_bc_state *ubc; + struct cardstate *cs; + struct isow_urbctx_t *done, *next, *ovfl; + struct urb *urb; + struct usb_iso_packet_descriptor *ifd; + int offset; + unsigned long flags; + int i; + struct sk_buff *skb; + int len; + + bcs = (struct bc_state *) data; + IFNULLRET(bcs); + ubc = bcs->hw.bas; + IFNULLRET(ubc); + cs = bcs->cs; + IFNULLRET(cs); + + /* loop while completed URBs arrive in time */ + for (;;) { + if (unlikely(!atomic_read(&cs->connected))) { + warn("%s: disconnected", __func__); + return; + } + + if (unlikely(!(atomic_read(&ubc->running)))) { + dbg(DEBUG_ISO, "%s: not running", __func__); + return; + } + + /* retrieve completed URBs */ + spin_lock_irqsave(&ubc->isooutlock, flags); + done = ubc->isooutdone; + ubc->isooutdone = NULL; + ovfl = ubc->isooutovfl; + ubc->isooutovfl = NULL; + spin_unlock_irqrestore(&ubc->isooutlock, flags); + if (ovfl) { + err("isochronous write buffer underrun - buy a faster machine :-)"); + error_hangup(bcs); + break; + } + if (!done) + break; + + /* submit free URB if available */ + spin_lock_irqsave(&ubc->isooutlock, flags); + next = ubc->isooutfree; + ubc->isooutfree = NULL; + spin_unlock_irqrestore(&ubc->isooutlock, flags); + if (next) { + if (submit_iso_write_urb(next) <= 0) { + /* could not submit URB, put it back */ + spin_lock_irqsave(&ubc->isooutlock, flags); + if (ubc->isooutfree == NULL) { + ubc->isooutfree = next; + next = NULL; + } + spin_unlock_irqrestore(&ubc->isooutlock, flags); + if (next) { + /* couldn't put it back */ + err("losing isochronous write URB"); + error_hangup(bcs); + } + } + } + + /* process completed URB */ + urb = done->urb; + switch (urb->status) { + case 0: /* normal completion */ + break; + case -EXDEV: /* inspect individual frames */ + /* assumptions (for lack of documentation): + * - actual_length bytes of the frame in error are successfully sent + * - all following frames are not sent at all + */ + dbg(DEBUG_ISO, "%s: URB partially completed", __func__); + offset = done->limit; /* just in case */ + for (i = 0; i < BAS_NUMFRAMES; i++) { + ifd = &urb->iso_frame_desc[i]; + if (ifd->status || + ifd->actual_length != ifd->length) { + warn("isochronous write: frame %d: %s, " + "only %d of %d bytes sent", + i, get_usb_statmsg(ifd->status), + ifd->actual_length, ifd->length); + offset = (ifd->offset + + ifd->actual_length) + % BAS_OUTBUFSIZE; + break; + } + } +#ifdef CONFIG_GIGASET_DEBUG + /* check assumption on remaining frames */ + for (; i < BAS_NUMFRAMES; i++) { + ifd = &urb->iso_frame_desc[i]; + if (ifd->status != -EINPROGRESS + || ifd->actual_length != 0) { + warn("isochronous write: frame %d: %s, " + "%d of %d bytes sent", + i, get_usb_statmsg(ifd->status), + ifd->actual_length, ifd->length); + offset = (ifd->offset + + ifd->actual_length) + % BAS_OUTBUFSIZE; + break; + } + } +#endif + break; + case -EPIPE: //FIXME is this the code for "underrun"? + err("isochronous write stalled"); + error_hangup(bcs); + break; + default: /* severe trouble */ + warn("isochronous write: %s", + get_usb_statmsg(urb->status)); + } + + /* mark the write buffer area covered by this URB as free */ + if (done->limit >= 0) + atomic_set(&ubc->isooutbuf->read, done->limit); + + /* mark URB as free */ + spin_lock_irqsave(&ubc->isooutlock, flags); + next = ubc->isooutfree; + ubc->isooutfree = done; + spin_unlock_irqrestore(&ubc->isooutlock, flags); + if (next) { + /* only one URB still active - resubmit one */ + if (submit_iso_write_urb(next) <= 0) { + /* couldn't submit */ + error_hangup(bcs); + } + } + } + + /* process queued SKBs */ + while ((skb = skb_dequeue(&bcs->squeue))) { + /* copy to output buffer, doing L2 encapsulation */ + len = skb->len; + if (gigaset_isoc_buildframe(bcs, skb->data, len) == -EAGAIN) { + /* insufficient buffer space, push back onto queue */ + skb_queue_head(&bcs->squeue, skb); + dbg(DEBUG_ISO, "%s: skb requeued, qlen=%d", + __func__, skb_queue_len(&bcs->squeue)); + break; + } + skb_pull(skb, len); + gigaset_skb_sent(bcs, skb); + dev_kfree_skb_any(skb); + } +} + +/* Isochronous Read - Bottom Half */ +/* ============================== */ + +/* read_iso_tasklet + * tasklet scheduled when an isochronous input URB from the Gigaset device + * has completed + * parameter: + * data B channel state structure + */ +static void read_iso_tasklet(unsigned long data) +{ + struct bc_state *bcs; + struct bas_bc_state *ubc; + struct cardstate *cs; + struct urb *urb; + char *rcvbuf; + unsigned long flags; + int totleft, numbytes, offset, frame, rc; + + bcs = (struct bc_state *) data; + IFNULLRET(bcs); + ubc = bcs->hw.bas; + IFNULLRET(ubc); + cs = bcs->cs; + IFNULLRET(cs); + + /* loop while more completed URBs arrive in the meantime */ + for (;;) { + if (!atomic_read(&cs->connected)) { + warn("%s: disconnected", __func__); + return; + } + + /* retrieve URB */ + spin_lock_irqsave(&ubc->isoinlock, flags); + if (!(urb = ubc->isoindone)) { + spin_unlock_irqrestore(&ubc->isoinlock, flags); + return; + } + ubc->isoindone = NULL; + if (unlikely(ubc->loststatus != -EINPROGRESS)) { + warn("isochronous read overrun, dropped URB with status: %s, %d bytes lost", + get_usb_statmsg(ubc->loststatus), ubc->isoinlost); + ubc->loststatus = -EINPROGRESS; + } + spin_unlock_irqrestore(&ubc->isoinlock, flags); + + if (unlikely(!(atomic_read(&ubc->running)))) { + dbg(DEBUG_ISO, "%s: channel not running, dropped URB with status: %s", + __func__, get_usb_statmsg(urb->status)); + return; + } + + switch (urb->status) { + case 0: /* normal completion */ + break; + case -EXDEV: /* inspect individual frames (we do that anyway) */ + dbg(DEBUG_ISO, "%s: URB partially completed", __func__); + break; + case -ENOENT: + case -ECONNRESET: + dbg(DEBUG_ISO, "%s: URB canceled", __func__); + continue; /* -> skip */ + case -EINPROGRESS: /* huh? */ + dbg(DEBUG_ISO, "%s: URB still pending", __func__); + continue; /* -> skip */ + case -EPIPE: + err("isochronous read stalled"); + error_hangup(bcs); + continue; /* -> skip */ + default: /* severe trouble */ + warn("isochronous read: %s", + get_usb_statmsg(urb->status)); + goto error; + } + + rcvbuf = urb->transfer_buffer; + totleft = urb->actual_length; + for (frame = 0; totleft > 0 && frame < BAS_NUMFRAMES; frame++) { + if (unlikely(urb->iso_frame_desc[frame].status)) { + warn("isochronous read: frame %d: %s", + frame, get_usb_statmsg(urb->iso_frame_desc[frame].status)); + break; + } + numbytes = urb->iso_frame_desc[frame].actual_length; + if (unlikely(numbytes > BAS_MAXFRAME)) { + warn("isochronous read: frame %d: numbytes (%d) > BAS_MAXFRAME", + frame, numbytes); + break; + } + if (unlikely(numbytes > totleft)) { + warn("isochronous read: frame %d: numbytes (%d) > totleft (%d)", + frame, numbytes, totleft); + break; + } + offset = urb->iso_frame_desc[frame].offset; + if (unlikely(offset + numbytes > BAS_INBUFSIZE)) { + warn("isochronous read: frame %d: offset (%d) + numbytes (%d) > BAS_INBUFSIZE", + frame, offset, numbytes); + break; + } + gigaset_isoc_receive(rcvbuf + offset, numbytes, bcs); + totleft -= numbytes; + } + if (unlikely(totleft > 0)) + warn("isochronous read: %d data bytes missing", + totleft); + + error: + /* URB processed, resubmit */ + for (frame = 0; frame < BAS_NUMFRAMES; frame++) { + urb->iso_frame_desc[frame].status = 0; + urb->iso_frame_desc[frame].actual_length = 0; + } + urb->dev = bcs->cs->hw.bas->udev; /* clobbered by USB subsystem */ + urb->transfer_flags = URB_ISO_ASAP; + urb->number_of_packets = BAS_NUMFRAMES; + if ((rc = usb_submit_urb(urb, SLAB_ATOMIC)) != 0) { + err("could not resubmit isochronous read URB: %s", + get_usb_statmsg(rc)); + dump_urb(DEBUG_ISO, "resubmit iso read", urb); + error_hangup(bcs); + } + } +} + +/* Channel Operations */ +/* ================== */ + +/* req_timeout + * timeout routine for control output request + * argument: + * B channel control structure + */ +static void req_timeout(unsigned long data) +{ + struct bc_state *bcs = (struct bc_state *) data; + struct bas_cardstate *ucs; + int pending; + unsigned long flags; + + IFNULLRET(bcs); + IFNULLRET(bcs->cs); + ucs = bcs->cs->hw.bas; + IFNULLRET(ucs); + + check_pending(ucs); + + spin_lock_irqsave(&ucs->lock, flags); + pending = ucs->pending; + ucs->pending = 0; + spin_unlock_irqrestore(&ucs->lock, flags); + + switch (pending) { + case 0: /* no pending request */ + dbg(DEBUG_USBREQ, "%s: no request pending", __func__); + break; + + case HD_OPEN_ATCHANNEL: + err("timeout opening AT channel"); + error_reset(bcs->cs); + break; + + case HD_OPEN_B2CHANNEL: + case HD_OPEN_B1CHANNEL: + err("timeout opening channel %d", bcs->channel + 1); + error_hangup(bcs); + break; + + case HD_CLOSE_ATCHANNEL: + err("timeout closing AT channel"); + //wake_up_interruptible(cs->initwait); + //FIXME need own wait queue? + break; + + case HD_CLOSE_B2CHANNEL: + case HD_CLOSE_B1CHANNEL: + err("timeout closing channel %d", bcs->channel + 1); + break; + + default: + warn("request 0x%02x timed out, clearing", pending); + } +} + +/* write_ctrl_callback + * USB completion handler for control pipe output + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block of completed request + * urb->context = hardware specific controller state structure + */ +static void write_ctrl_callback(struct urb *urb, struct pt_regs *regs) +{ + struct bas_cardstate *ucs; + unsigned long flags; + + IFNULLRET(urb); + IFNULLRET(urb->context); + IFNULLRET(cardstate); + + ucs = (struct bas_cardstate *) urb->context; + spin_lock_irqsave(&ucs->lock, flags); + if (urb->status && ucs->pending) { + err("control request 0x%02x failed: %s", + ucs->pending, get_usb_statmsg(urb->status)); + del_timer(&ucs->timer_ctrl); + ucs->pending = 0; + } + /* individual handling of specific request types */ + switch (ucs->pending) { + case HD_DEVICE_INIT_ACK: /* no reply expected */ + ucs->pending = 0; + break; + } + spin_unlock_irqrestore(&ucs->lock, flags); +} + +/* req_submit + * submit a control output request without message buffer to the Gigaset base + * and optionally start a timeout + * parameters: + * bcs B channel control structure + * req control request code (HD_*) + * val control request parameter value (set to 0 if unused) + * timeout timeout in seconds (0: no timeout) + * return value: + * 0 on success + * -EINVAL if a NULL pointer is encountered somewhere + * -EBUSY if another request is pending + * any URB submission error code + */ +static int req_submit(struct bc_state *bcs, int req, int val, int timeout) +{ + struct bas_cardstate *ucs; + int ret; + unsigned long flags; + + IFNULLRETVAL(bcs, -EINVAL); + IFNULLRETVAL(bcs->cs, -EINVAL); + ucs = bcs->cs->hw.bas; + IFNULLRETVAL(ucs, -EINVAL); + IFNULLRETVAL(ucs->urb_ctrl, -EINVAL); + + dbg(DEBUG_USBREQ, "-------> 0x%02x (%d)", req, val); + + spin_lock_irqsave(&ucs->lock, flags); + if (ucs->pending) { + spin_unlock_irqrestore(&ucs->lock, flags); + err("submission of request 0x%02x failed: request 0x%02x still pending", + req, ucs->pending); + return -EBUSY; + } + if (ucs->urb_ctrl->status == -EINPROGRESS) { + spin_unlock_irqrestore(&ucs->lock, flags); + err("could not submit request 0x%02x: URB busy", req); + return -EBUSY; + } + + ucs->dr_ctrl.bRequestType = OUT_VENDOR_REQ; + ucs->dr_ctrl.bRequest = req; + ucs->dr_ctrl.wValue = cpu_to_le16(val); + ucs->dr_ctrl.wIndex = 0; + ucs->dr_ctrl.wLength = 0; + usb_fill_control_urb(ucs->urb_ctrl, ucs->udev, + usb_sndctrlpipe(ucs->udev, 0), + (unsigned char*) &ucs->dr_ctrl, NULL, 0, + write_ctrl_callback, ucs); + if ((ret = usb_submit_urb(ucs->urb_ctrl, SLAB_ATOMIC)) != 0) { + err("could not submit request 0x%02x: %s", + req, get_usb_statmsg(ret)); + spin_unlock_irqrestore(&ucs->lock, flags); + return ret; + } + ucs->pending = req; + + if (timeout > 0) { + dbg(DEBUG_USBREQ, "setting timeout of %d/10 secs", timeout); + ucs->timer_ctrl.expires = jiffies + timeout * HZ / 10; + ucs->timer_ctrl.data = (unsigned long) bcs; + ucs->timer_ctrl.function = req_timeout; + add_timer(&ucs->timer_ctrl); + } + + spin_unlock_irqrestore(&ucs->lock, flags); + return 0; +} + +/* gigaset_init_bchannel + * called by common.c to connect a B channel + * initialize isochronous I/O and tell the Gigaset base to open the channel + * argument: + * B channel control structure + * return value: + * 0 on success, error code < 0 on error + */ +static int gigaset_init_bchannel(struct bc_state *bcs) +{ + int req, ret; + + IFNULLRETVAL(bcs, -EINVAL); + + if ((ret = starturbs(bcs)) < 0) { + err("could not start isochronous I/O for channel %d", + bcs->channel + 1); + error_hangup(bcs); + return ret; + } + + req = bcs->channel ? HD_OPEN_B2CHANNEL : HD_OPEN_B1CHANNEL; + if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) { + err("could not open channel %d: %s", + bcs->channel + 1, get_usb_statmsg(ret)); + stopurbs(bcs->hw.bas); + error_hangup(bcs); + } + return ret; +} + +/* gigaset_close_bchannel + * called by common.c to disconnect a B channel + * tell the Gigaset base to close the channel + * stopping isochronous I/O and LL notification will be done when the + * acknowledgement for the close arrives + * argument: + * B channel control structure + * return value: + * 0 on success, error code < 0 on error + */ +static int gigaset_close_bchannel(struct bc_state *bcs) +{ + int req, ret; + + IFNULLRETVAL(bcs, -EINVAL); + + if (!(atomic_read(&bcs->cs->hw.bas->basstate) & + (bcs->channel ? BS_B2OPEN : BS_B1OPEN))) { + /* channel not running: just signal common.c */ + gigaset_bchannel_down(bcs); + return 0; + } + + req = bcs->channel ? HD_CLOSE_B2CHANNEL : HD_CLOSE_B1CHANNEL; + if ((ret = req_submit(bcs, req, 0, BAS_TIMEOUT)) < 0) + err("could not submit HD_CLOSE_BxCHANNEL request: %s", + get_usb_statmsg(ret)); + return ret; +} + +/* Device Operations */ +/* ================= */ + +/* complete_cb + * unqueue first command buffer from queue, waking any sleepers + * must be called with cs->cmdlock held + * parameter: + * cs controller state structure + */ +static void complete_cb(struct cardstate *cs) +{ + struct cmdbuf_t *cb; + + IFNULLRET(cs); + cb = cs->cmdbuf; + IFNULLRET(cb); + + /* unqueue completed buffer */ + cs->cmdbytes -= cs->curlen; + dbg(DEBUG_TRANSCMD | DEBUG_LOCKCMD, + "write_command: sent %u bytes, %u left", + cs->curlen, cs->cmdbytes); + if ((cs->cmdbuf = cb->next) != NULL) { + cs->cmdbuf->prev = NULL; + cs->curlen = cs->cmdbuf->len; + } else { + cs->lastcmdbuf = NULL; + cs->curlen = 0; + } + + if (cb->wake_tasklet) + tasklet_schedule(cb->wake_tasklet); + + kfree(cb); +} + +static int atwrite_submit(struct cardstate *cs, unsigned char *buf, int len); + +/* write_command_callback + * USB completion handler for AT command transmission + * called by the USB subsystem in interrupt context + * parameter: + * urb USB request block of completed request + * urb->context = controller state structure + */ +static void write_command_callback(struct urb *urb, struct pt_regs *regs) +{ + struct cardstate *cs; + unsigned long flags; + struct bas_cardstate *ucs; + + IFNULLRET(urb); + cs = (struct cardstate *) urb->context; + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + /* check status */ + switch (urb->status) { + case 0: /* normal completion */ + break; + case -ENOENT: /* canceled */ + case -ECONNRESET: /* canceled (async) */ + case -EINPROGRESS: /* pending */ + /* ignore silently */ + dbg(DEBUG_USBREQ, + "%s: %s", __func__, get_usb_statmsg(urb->status)); + return; + default: /* any failure */ + if (++ucs->retry_cmd_out > BAS_RETRY) { + warn("command write: %s, giving up after %d retries", + get_usb_statmsg(urb->status), ucs->retry_cmd_out); + break; + } + if (cs->cmdbuf == NULL) { + warn("command write: %s, cannot retry - cmdbuf gone", + get_usb_statmsg(urb->status)); + break; + } + notice("command write: %s, retry %d", + get_usb_statmsg(urb->status), ucs->retry_cmd_out); + if (atwrite_submit(cs, cs->cmdbuf->buf, cs->cmdbuf->len) >= 0) + /* resubmitted - bypass regular exit block */ + return; + /* command send failed, assume base still waiting */ + update_basstate(ucs, BS_ATREADY, 0); + } + + spin_lock_irqsave(&cs->cmdlock, flags); + if (cs->cmdbuf != NULL) + complete_cb(cs); + spin_unlock_irqrestore(&cs->cmdlock, flags); +} + +/* atrdy_timeout + * timeout routine for AT command transmission + * argument: + * controller state structure + */ +static void atrdy_timeout(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + struct bas_cardstate *ucs; + + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + warn("timeout waiting for HD_READY_SEND_ATDATA"); + + /* fake the missing signal - what else can I do? */ + update_basstate(ucs, BS_ATREADY, BS_ATTIMER); + start_cbsend(cs); +} + +/* atwrite_submit + * submit an HD_WRITE_ATMESSAGE command URB + * parameters: + * cs controller state structure + * buf buffer containing command to send + * len length of command to send + * return value: + * 0 on success + * -EFAULT if a NULL pointer is encountered somewhere + * -EBUSY if another request is pending + * any URB submission error code + */ +static int atwrite_submit(struct cardstate *cs, unsigned char *buf, int len) +{ + struct bas_cardstate *ucs; + int ret; + + IFNULLRETVAL(cs, -EFAULT); + ucs = cs->hw.bas; + IFNULLRETVAL(ucs, -EFAULT); + IFNULLRETVAL(ucs->urb_cmd_out, -EFAULT); + + dbg(DEBUG_USBREQ, "-------> HD_WRITE_ATMESSAGE (%d)", len); + + if (ucs->urb_cmd_out->status == -EINPROGRESS) { + err("could not submit HD_WRITE_ATMESSAGE: URB busy"); + return -EBUSY; + } + + ucs->dr_cmd_out.bRequestType = OUT_VENDOR_REQ; + ucs->dr_cmd_out.bRequest = HD_WRITE_ATMESSAGE; + ucs->dr_cmd_out.wValue = 0; + ucs->dr_cmd_out.wIndex = 0; + ucs->dr_cmd_out.wLength = cpu_to_le16(len); + usb_fill_control_urb(ucs->urb_cmd_out, ucs->udev, + usb_sndctrlpipe(ucs->udev, 0), + (unsigned char*) &ucs->dr_cmd_out, buf, len, + write_command_callback, cs); + + if ((ret = usb_submit_urb(ucs->urb_cmd_out, SLAB_ATOMIC)) != 0) { + err("could not submit HD_WRITE_ATMESSAGE: %s", + get_usb_statmsg(ret)); + return ret; + } + + /* submitted successfully */ + update_basstate(ucs, 0, BS_ATREADY); + + /* start timeout if necessary */ + if (!(atomic_read(&ucs->basstate) & BS_ATTIMER)) { + dbg(DEBUG_OUTPUT, + "setting ATREADY timeout of %d/10 secs", ATRDY_TIMEOUT); + ucs->timer_atrdy.expires = jiffies + ATRDY_TIMEOUT * HZ / 10; + ucs->timer_atrdy.data = (unsigned long) cs; + ucs->timer_atrdy.function = atrdy_timeout; + add_timer(&ucs->timer_atrdy); + update_basstate(ucs, BS_ATTIMER, 0); + } + return 0; +} + +/* start_cbsend + * start transmission of AT command queue if necessary + * parameter: + * cs controller state structure + * return value: + * 0 on success + * error code < 0 on error + */ +static int start_cbsend(struct cardstate *cs) +{ + struct cmdbuf_t *cb; + struct bas_cardstate *ucs; + unsigned long flags; + int rc; + int retval = 0; + + IFNULLRETVAL(cs, -EFAULT); + ucs = cs->hw.bas; + IFNULLRETVAL(ucs, -EFAULT); + + /* check if AT channel is open */ + if (!(atomic_read(&ucs->basstate) & BS_ATOPEN)) { + dbg(DEBUG_TRANSCMD | DEBUG_LOCKCMD, "AT channel not open"); + rc = req_submit(cs->bcs, HD_OPEN_ATCHANNEL, 0, BAS_TIMEOUT); + if (rc < 0) { + err("could not open AT channel"); + /* flush command queue */ + spin_lock_irqsave(&cs->cmdlock, flags); + while (cs->cmdbuf != NULL) + complete_cb(cs); + spin_unlock_irqrestore(&cs->cmdlock, flags); + } + return rc; + } + + /* try to send first command in queue */ + spin_lock_irqsave(&cs->cmdlock, flags); + + while ((cb = cs->cmdbuf) != NULL && + atomic_read(&ucs->basstate) & BS_ATREADY) { + ucs->retry_cmd_out = 0; + rc = atwrite_submit(cs, cb->buf, cb->len); + if (unlikely(rc)) { + retval = rc; + complete_cb(cs); + } + } + + spin_unlock_irqrestore(&cs->cmdlock, flags); + return retval; +} + +/* gigaset_write_cmd + * This function is called by the device independent part of the driver + * to transmit an AT command string to the Gigaset device. + * It encapsulates the device specific method for transmission over the + * direct USB connection to the base. + * The command string is added to the queue of commands to send, and + * USB transmission is started if necessary. + * parameters: + * cs controller state structure + * buf command string to send + * len number of bytes to send (max. IF_WRITEBUF) + * wake_tasklet tasklet to run when transmission is completed (NULL if none) + * return value: + * number of bytes queued on success + * error code < 0 on error + */ +static int gigaset_write_cmd(struct cardstate *cs, + const unsigned char *buf, int len, + struct tasklet_struct *wake_tasklet) +{ + struct cmdbuf_t *cb; + unsigned long flags; + int status; + + gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? + DEBUG_TRANSCMD : DEBUG_LOCKCMD, + "CMD Transmit", len, buf, 0); + + if (!atomic_read(&cs->connected)) { + err("%s: not connected", __func__); + return -ENODEV; + } + + if (len <= 0) + return 0; /* nothing to do */ + + if (len > IF_WRITEBUF) + len = IF_WRITEBUF; + if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { + err("%s: out of memory", __func__); + return -ENOMEM; + } + + memcpy(cb->buf, buf, len); + cb->len = len; + cb->offset = 0; + cb->next = NULL; + cb->wake_tasklet = wake_tasklet; + + spin_lock_irqsave(&cs->cmdlock, flags); + cb->prev = cs->lastcmdbuf; + if (cs->lastcmdbuf) + cs->lastcmdbuf->next = cb; + else { + cs->cmdbuf = cb; + cs->curlen = len; + } + cs->cmdbytes += len; + cs->lastcmdbuf = cb; + spin_unlock_irqrestore(&cs->cmdlock, flags); + + status = start_cbsend(cs); + + return status < 0 ? status : len; +} + +/* gigaset_write_room + * tty_driver.write_room interface routine + * return number of characters the driver will accept to be written via gigaset_write_cmd + * parameter: + * controller state structure + * return value: + * number of characters + */ +static int gigaset_write_room(struct cardstate *cs) +{ + return IF_WRITEBUF; +} + +/* gigaset_chars_in_buffer + * tty_driver.chars_in_buffer interface routine + * return number of characters waiting to be sent + * parameter: + * controller state structure + * return value: + * number of characters + */ +static int gigaset_chars_in_buffer(struct cardstate *cs) +{ + unsigned long flags; + unsigned bytes; + + spin_lock_irqsave(&cs->cmdlock, flags); + bytes = cs->cmdbytes; + spin_unlock_irqrestore(&cs->cmdlock, flags); + + return bytes; +} + +/* gigaset_brkchars + * implementation of ioctl(GIGASET_BRKCHARS) + * parameter: + * controller state structure + * return value: + * -EINVAL (unimplemented function) + */ +static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) +{ + return -EINVAL; +} + + +/* Device Initialization/Shutdown */ +/* ============================== */ + +/* Free hardware dependent part of the B channel structure + * parameter: + * bcs B channel structure + * return value: + * !=0 on success + */ +static int gigaset_freebcshw(struct bc_state *bcs) +{ + if (!bcs->hw.bas) + return 0; + + if (bcs->hw.bas->isooutbuf) + kfree(bcs->hw.bas->isooutbuf); + kfree(bcs->hw.bas); + bcs->hw.bas = NULL; + return 1; +} + +/* Initialize hardware dependent part of the B channel structure + * parameter: + * bcs B channel structure + * return value: + * !=0 on success + */ +static int gigaset_initbcshw(struct bc_state *bcs) +{ + int i; + struct bas_bc_state *ubc; + + bcs->hw.bas = ubc = kmalloc(sizeof(struct bas_bc_state), GFP_KERNEL); + if (!ubc) { + err("could not allocate bas_bc_state"); + return 0; + } + + atomic_set(&ubc->running, 0); + atomic_set(&ubc->corrbytes, 0); + spin_lock_init(&ubc->isooutlock); + for (i = 0; i < BAS_OUTURBS; ++i) { + ubc->isoouturbs[i].urb = NULL; + ubc->isoouturbs[i].bcs = bcs; + } + ubc->isooutdone = ubc->isooutfree = ubc->isooutovfl = NULL; + ubc->numsub = 0; + if (!(ubc->isooutbuf = kmalloc(sizeof(struct isowbuf_t), GFP_KERNEL))) { + err("could not allocate isochronous output buffer"); + kfree(ubc); + bcs->hw.bas = NULL; + return 0; + } + tasklet_init(&ubc->sent_tasklet, + &write_iso_tasklet, (unsigned long) bcs); + + spin_lock_init(&ubc->isoinlock); + for (i = 0; i < BAS_INURBS; ++i) + ubc->isoinurbs[i] = NULL; + ubc->isoindone = NULL; + ubc->loststatus = -EINPROGRESS; + ubc->isoinlost = 0; + ubc->seqlen = 0; + ubc->inbyte = 0; + ubc->inbits = 0; + ubc->goodbytes = 0; + ubc->alignerrs = 0; + ubc->fcserrs = 0; + ubc->frameerrs = 0; + ubc->giants = 0; + ubc->runts = 0; + ubc->aborts = 0; + ubc->shared0s = 0; + ubc->stolen0s = 0; + tasklet_init(&ubc->rcvd_tasklet, + &read_iso_tasklet, (unsigned long) bcs); + return 1; +} + +static void gigaset_reinitbcshw(struct bc_state *bcs) +{ + struct bas_bc_state *ubc = bcs->hw.bas; + + atomic_set(&bcs->hw.bas->running, 0); + atomic_set(&bcs->hw.bas->corrbytes, 0); + bcs->hw.bas->numsub = 0; + spin_lock_init(&ubc->isooutlock); + spin_lock_init(&ubc->isoinlock); + ubc->loststatus = -EINPROGRESS; +} + +static void gigaset_freecshw(struct cardstate *cs) +{ + struct bas_cardstate *ucs = cs->hw.bas; + + del_timer(&ucs->timer_ctrl); + del_timer(&ucs->timer_atrdy); + del_timer(&ucs->timer_cmd_in); + + kfree(cs->hw.bas); +} + +static int gigaset_initcshw(struct cardstate *cs) +{ + struct bas_cardstate *ucs; + + cs->hw.bas = ucs = kmalloc(sizeof *ucs, GFP_KERNEL); + if (!ucs) + return 0; + + ucs->urb_cmd_in = NULL; + ucs->urb_cmd_out = NULL; + ucs->rcvbuf = NULL; + ucs->rcvbuf_size = 0; + + spin_lock_init(&ucs->lock); + ucs->pending = 0; + + atomic_set(&ucs->basstate, 0); + init_timer(&ucs->timer_ctrl); + init_timer(&ucs->timer_atrdy); + init_timer(&ucs->timer_cmd_in); + + return 1; +} + +/* freeurbs + * unlink and deallocate all URBs unconditionally + * caller must make sure that no commands are still in progress + * parameter: + * cs controller state structure + */ +static void freeurbs(struct cardstate *cs) +{ + struct bas_cardstate *ucs; + struct bas_bc_state *ubc; + int i, j; + + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + for (j = 0; j < 2; ++j) { + ubc = cs->bcs[j].hw.bas; + IFNULLCONT(ubc); + for (i = 0; i < BAS_OUTURBS; ++i) + if (ubc->isoouturbs[i].urb) { + usb_kill_urb(ubc->isoouturbs[i].urb); + dbg(DEBUG_INIT, + "%s: isoc output URB %d/%d unlinked", + __func__, j, i); + usb_free_urb(ubc->isoouturbs[i].urb); + ubc->isoouturbs[i].urb = NULL; + } + for (i = 0; i < BAS_INURBS; ++i) + if (ubc->isoinurbs[i]) { + usb_kill_urb(ubc->isoinurbs[i]); + dbg(DEBUG_INIT, + "%s: isoc input URB %d/%d unlinked", + __func__, j, i); + usb_free_urb(ubc->isoinurbs[i]); + ubc->isoinurbs[i] = NULL; + } + } + if (ucs->urb_int_in) { + usb_kill_urb(ucs->urb_int_in); + dbg(DEBUG_INIT, "%s: interrupt input URB unlinked", __func__); + usb_free_urb(ucs->urb_int_in); + ucs->urb_int_in = NULL; + } + if (ucs->urb_cmd_out) { + usb_kill_urb(ucs->urb_cmd_out); + dbg(DEBUG_INIT, "%s: command output URB unlinked", __func__); + usb_free_urb(ucs->urb_cmd_out); + ucs->urb_cmd_out = NULL; + } + if (ucs->urb_cmd_in) { + usb_kill_urb(ucs->urb_cmd_in); + dbg(DEBUG_INIT, "%s: command input URB unlinked", __func__); + usb_free_urb(ucs->urb_cmd_in); + ucs->urb_cmd_in = NULL; + } + if (ucs->urb_ctrl) { + usb_kill_urb(ucs->urb_ctrl); + dbg(DEBUG_INIT, "%s: control output URB unlinked", __func__); + usb_free_urb(ucs->urb_ctrl); + ucs->urb_ctrl = NULL; + } +} + +/* gigaset_probe + * This function is called when a new USB device is connected. + * It checks whether the new device is handled by this driver. + */ +static int gigaset_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + struct usb_host_interface *hostif; + struct usb_device *udev = interface_to_usbdev(interface); + struct cardstate *cs = NULL; + struct bas_cardstate *ucs = NULL; + struct bas_bc_state *ubc; + struct usb_endpoint_descriptor *endpoint; + int i, j; + int ret; + + IFNULLRETVAL(udev, -ENODEV); + + dbg(DEBUG_ANY, + "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", + __func__, le16_to_cpu(udev->descriptor.idVendor), + le16_to_cpu(udev->descriptor.idProduct)); + + /* See if the device offered us matches what we can accept */ + if ((le16_to_cpu(udev->descriptor.idVendor) != USB_GIGA_VENDOR_ID) || + (le16_to_cpu(udev->descriptor.idProduct) != USB_GIGA_PRODUCT_ID && + le16_to_cpu(udev->descriptor.idProduct) != USB_4175_PRODUCT_ID && + le16_to_cpu(udev->descriptor.idProduct) != USB_SX303_PRODUCT_ID && + le16_to_cpu(udev->descriptor.idProduct) != USB_SX353_PRODUCT_ID)) { + dbg(DEBUG_ANY, "%s: unmatched ID - exiting", __func__); + return -ENODEV; + } + + /* set required alternate setting */ + hostif = interface->cur_altsetting; + if (hostif->desc.bAlternateSetting != 3) { + dbg(DEBUG_ANY, + "%s: wrong alternate setting %d - trying to switch", + __func__, hostif->desc.bAlternateSetting); + if (usb_set_interface(udev, hostif->desc.bInterfaceNumber, 3) < 0) { + warn("usb_set_interface failed, device %d interface %d altsetting %d", + udev->devnum, hostif->desc.bInterfaceNumber, + hostif->desc.bAlternateSetting); + return -ENODEV; + } + hostif = interface->cur_altsetting; + } + + /* Reject application specific interfaces + */ + if (hostif->desc.bInterfaceClass != 255) { + warn("%s: bInterfaceClass == %d", + __func__, hostif->desc.bInterfaceClass); + return -ENODEV; + } + + info("%s: Device matched (Vendor: 0x%x, Product: 0x%x)", + __func__, le16_to_cpu(udev->descriptor.idVendor), + le16_to_cpu(udev->descriptor.idProduct)); + + cs = gigaset_getunassignedcs(driver); + if (!cs) { + err("%s: no free cardstate", __func__); + return -ENODEV; + } + ucs = cs->hw.bas; + ucs->udev = udev; + ucs->interface = interface; + + /* allocate URBs: + * - one for the interrupt pipe + * - three for the different uses of the default control pipe + * - three for each isochronous pipe + */ + ucs->urb_int_in = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->urb_int_in) { + err("No free urbs available"); + goto error; + } + ucs->urb_cmd_in = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->urb_cmd_in) { + err("No free urbs available"); + goto error; + } + ucs->urb_cmd_out = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->urb_cmd_out) { + err("No free urbs available"); + goto error; + } + ucs->urb_ctrl = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->urb_ctrl) { + err("No free urbs available"); + goto error; + } + + for (j = 0; j < 2; ++j) { + ubc = cs->bcs[j].hw.bas; + for (i = 0; i < BAS_OUTURBS; ++i) { + ubc->isoouturbs[i].urb = + usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL); + if (!ubc->isoouturbs[i].urb) { + err("No free urbs available"); + goto error; + } + } + for (i = 0; i < BAS_INURBS; ++i) { + ubc->isoinurbs[i] = + usb_alloc_urb(BAS_NUMFRAMES, SLAB_KERNEL); + if (!ubc->isoinurbs[i]) { + err("No free urbs available"); + goto error; + } + } + } + + ucs->rcvbuf = NULL; + ucs->rcvbuf_size = 0; + + /* Fill the interrupt urb and send it to the core */ + endpoint = &hostif->endpoint[0].desc; + usb_fill_int_urb(ucs->urb_int_in, udev, + usb_rcvintpipe(udev, + (endpoint->bEndpointAddress) & 0x0f), + ucs->int_in_buf, 3, read_int_callback, cs, + endpoint->bInterval); + ret = usb_submit_urb(ucs->urb_int_in, SLAB_KERNEL); + if (ret) { + err("could not submit interrupt URB: %s", get_usb_statmsg(ret)); + goto error; + } + + /* tell the device that the driver is ready */ + if ((ret = req_submit(cs->bcs, HD_DEVICE_INIT_ACK, 0, 0)) != 0) + goto error; + + /* tell common part that the device is ready */ + if (startmode == SM_LOCKED) + atomic_set(&cs->mstate, MS_LOCKED); + if (!gigaset_start(cs)) + goto error; + + /* save address of controller structure */ + usb_set_intfdata(interface, cs); + + /* set up device sysfs */ + gigaset_init_dev_sysfs(interface); + return 0; + +error: + freeurbs(cs); + gigaset_unassign(cs); + return -ENODEV; +} + +/* gigaset_disconnect + * This function is called when the Gigaset base is unplugged. + */ +static void gigaset_disconnect(struct usb_interface *interface) +{ + struct cardstate *cs; + struct bas_cardstate *ucs; + + /* clear device sysfs */ + gigaset_free_dev_sysfs(interface); + + cs = usb_get_intfdata(interface); + usb_set_intfdata(interface, NULL); + + IFNULLRET(cs); + ucs = cs->hw.bas; + IFNULLRET(ucs); + + info("disconnecting GigaSet base"); + gigaset_stop(cs); + freeurbs(cs); + kfree(ucs->rcvbuf); + ucs->rcvbuf = NULL; + ucs->rcvbuf_size = 0; + atomic_set(&ucs->basstate, 0); + gigaset_unassign(cs); +} + +static struct gigaset_ops gigops = { + gigaset_write_cmd, + gigaset_write_room, + gigaset_chars_in_buffer, + gigaset_brkchars, + gigaset_init_bchannel, + gigaset_close_bchannel, + gigaset_initbcshw, + gigaset_freebcshw, + gigaset_reinitbcshw, + gigaset_initcshw, + gigaset_freecshw, + gigaset_set_modem_ctrl, + gigaset_baud_rate, + gigaset_set_line_ctrl, + gigaset_isoc_send_skb, + gigaset_isoc_input, +}; + +/* bas_gigaset_init + * This function is called after the kernel module is loaded. + */ +static int __init bas_gigaset_init(void) +{ + int result; + + /* allocate memory for our driver state and intialize it */ + if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, + GIGASET_MODULENAME, GIGASET_DEVNAME, + GIGASET_DEVFSNAME, &gigops, + THIS_MODULE)) == NULL) + goto error; + + /* allocate memory for our device state and intialize it */ + cardstate = gigaset_initcs(driver, 2, 0, 0, cidmode, GIGASET_MODULENAME); + if (!cardstate) + goto error; + + /* register this driver with the USB subsystem */ + result = usb_register(&gigaset_usb_driver); + if (result < 0) { + err("usb_register failed (error %d)", -result); + goto error; + } + + info(DRIVER_AUTHOR); + info(DRIVER_DESC); + return 0; + +error: if (cardstate) + gigaset_freecs(cardstate); + cardstate = NULL; + if (driver) + gigaset_freedriver(driver); + driver = NULL; + return -1; +} + +/* bas_gigaset_exit + * This function is called before the kernel module is unloaded. + */ +static void __exit bas_gigaset_exit(void) +{ + gigaset_blockdriver(driver); /* => probe will fail + * => no gigaset_start any more + */ + + gigaset_shutdown(cardstate); + /* from now on, no isdn callback should be possible */ + + if (atomic_read(&cardstate->hw.bas->basstate) & BS_ATOPEN) { + dbg(DEBUG_ANY, "closing AT channel"); + if (req_submit(cardstate->bcs, + HD_CLOSE_ATCHANNEL, 0, BAS_TIMEOUT) >= 0) { + /* successfully submitted - wait for completion */ + //wait_event_interruptible(cs->initwait, !cs->hw.bas->pending); + //FIXME need own wait queue? wakeup? + } + } + + /* deregister this driver with the USB subsystem */ + usb_deregister(&gigaset_usb_driver); + /* this will call the disconnect-callback */ + /* from now on, no disconnect/probe callback should be running */ + + gigaset_freecs(cardstate); + cardstate = NULL; + gigaset_freedriver(driver); + driver = NULL; +} + + +module_init(bas_gigaset_init); +module_exit(bas_gigaset_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c new file mode 100644 index 00000000000..64371995c1a --- /dev/null +++ b/drivers/isdn/gigaset/common.c @@ -0,0 +1,1203 @@ +/* + * Stuff used by all variants of the driver + * + * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>, + * Hansjoerg Lipp <hjlipp@web.de>, + * Tilman Schmidt <tilman@imap.cc>. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: common.c,v 1.104.4.22 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/ctype.h> +#include <linux/module.h> +#include <linux/moduleparam.h> + +/* Version Information */ +#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Tilman Schmidt <tilman@imap.cc>, Stefan Eilers <Eilers.Stefan@epost.de>" +#define DRIVER_DESC "Driver for Gigaset 307x" + +/* Module parameters */ +int gigaset_debuglevel = DEBUG_DEFAULT; +EXPORT_SYMBOL_GPL(gigaset_debuglevel); +module_param_named(debug, gigaset_debuglevel, int, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(debug, "debug level"); + +/*====================================================================== + Prototypes of internal functions + */ + +//static void gigaset_process_response(int resp_code, int parameter, +// struct at_state_t *at_state, +// unsigned char ** pstring); +static struct cardstate *alloc_cs(struct gigaset_driver *drv); +static void free_cs(struct cardstate *cs); +static void make_valid(struct cardstate *cs, unsigned mask); +static void make_invalid(struct cardstate *cs, unsigned mask); + +#define VALID_MINOR 0x01 +#define VALID_ID 0x02 +#define ASSIGNED 0x04 + +/* bitwise byte inversion table */ +__u8 gigaset_invtab[256] = { + 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, + 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, + 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, + 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, + 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, + 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, + 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, + 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, + 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, + 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, + 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, + 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, + 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, + 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, + 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, + 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, + 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, + 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, + 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, + 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, + 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, + 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, + 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, + 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, + 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, + 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, + 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, + 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, + 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, + 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, + 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, + 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff +}; +EXPORT_SYMBOL_GPL(gigaset_invtab); + +void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg, + size_t len, const unsigned char *buf, int from_user) +{ + unsigned char outbuf[80]; + unsigned char inbuf[80 - 1]; + size_t numin; + const unsigned char *in; + size_t space = sizeof outbuf - 1; + unsigned char *out = outbuf; + + if (!from_user) { + in = buf; + numin = len; + } else { + numin = len < sizeof inbuf ? len : sizeof inbuf; + in = inbuf; + if (copy_from_user(inbuf, (const unsigned char __user *) buf, numin)) { + strncpy(inbuf, "<FAULT>", sizeof inbuf); + numin = sizeof "<FAULT>" - 1; + } + } + + for (; numin && space; --numin, ++in) { + --space; + if (*in >= 32) + *out++ = *in; + else { + *out++ = '^'; + if (space) { + *out++ = '@' + *in; + --space; + } + } + } + *out = 0; + + dbg(level, "%s (%u bytes): %s", msg, (unsigned) len, outbuf); +} +EXPORT_SYMBOL_GPL(gigaset_dbg_buffer); + +static int setflags(struct cardstate *cs, unsigned flags, unsigned delay) +{ + int r; + + r = cs->ops->set_modem_ctrl(cs, cs->control_state, flags); + cs->control_state = flags; + if (r < 0) + return r; + + if (delay) { + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(delay * HZ / 1000); + } + + return 0; +} + +int gigaset_enterconfigmode(struct cardstate *cs) +{ + int i, r; + + if (!atomic_read(&cs->connected)) { + err("not connected!"); + return -1; + } + + cs->control_state = TIOCM_RTS; //FIXME + + r = setflags(cs, TIOCM_DTR, 200); + if (r < 0) + goto error; + r = setflags(cs, 0, 200); + if (r < 0) + goto error; + for (i = 0; i < 5; ++i) { + r = setflags(cs, TIOCM_RTS, 100); + if (r < 0) + goto error; + r = setflags(cs, 0, 100); + if (r < 0) + goto error; + } + r = setflags(cs, TIOCM_RTS|TIOCM_DTR, 800); + if (r < 0) + goto error; + + return 0; + +error: + err("error %d on setuartbits!\n", -r); + cs->control_state = TIOCM_RTS|TIOCM_DTR; // FIXME is this a good value? + cs->ops->set_modem_ctrl(cs, 0, TIOCM_RTS|TIOCM_DTR); + + return -1; //r +} + +static int test_timeout(struct at_state_t *at_state) +{ + if (!at_state->timer_expires) + return 0; + + if (--at_state->timer_expires) { + dbg(DEBUG_MCMD, "decreased timer of %p to %lu", + at_state, at_state->timer_expires); + return 0; + } + + if (!gigaset_add_event(at_state->cs, at_state, EV_TIMEOUT, NULL, + atomic_read(&at_state->timer_index), NULL)) { + //FIXME what should we do? + } + + return 1; +} + +static void timer_tick(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + unsigned long flags; + unsigned channel; + struct at_state_t *at_state; + int timeout = 0; + + spin_lock_irqsave(&cs->lock, flags); + + for (channel = 0; channel < cs->channels; ++channel) + if (test_timeout(&cs->bcs[channel].at_state)) + timeout = 1; + + if (test_timeout(&cs->at_state)) + timeout = 1; + + list_for_each_entry(at_state, &cs->temp_at_states, list) + if (test_timeout(at_state)) + timeout = 1; + + if (atomic_read(&cs->running)) { + mod_timer(&cs->timer, jiffies + GIG_TICK); + if (timeout) { + dbg(DEBUG_CMD, "scheduling timeout"); + tasklet_schedule(&cs->event_tasklet); + } + } + + spin_unlock_irqrestore(&cs->lock, flags); +} + +int gigaset_get_channel(struct bc_state *bcs) +{ + unsigned long flags; + + spin_lock_irqsave(&bcs->cs->lock, flags); + if (bcs->use_count) { + dbg(DEBUG_ANY, "could not allocate channel %d", bcs->channel); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + return 0; + } + ++bcs->use_count; + bcs->busy = 1; + dbg(DEBUG_ANY, "allocated channel %d", bcs->channel); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + return 1; +} + +void gigaset_free_channel(struct bc_state *bcs) +{ + unsigned long flags; + + spin_lock_irqsave(&bcs->cs->lock, flags); + if (!bcs->busy) { + dbg(DEBUG_ANY, "could not free channel %d", bcs->channel); + spin_unlock_irqrestore(&bcs->cs->lock, flags); + return; + } + --bcs->use_count; + bcs->busy = 0; + dbg(DEBUG_ANY, "freed channel %d", bcs->channel); + spin_unlock_irqrestore(&bcs->cs->lock, flags); +} + +int gigaset_get_channels(struct cardstate *cs) +{ + unsigned long flags; + int i; + + spin_lock_irqsave(&cs->lock, flags); + for (i = 0; i < cs->channels; ++i) + if (cs->bcs[i].use_count) { + spin_unlock_irqrestore(&cs->lock, flags); + dbg(DEBUG_ANY, "could not allocated all channels"); + return 0; + } + for (i = 0; i < cs->channels; ++i) + ++cs->bcs[i].use_count; + spin_unlock_irqrestore(&cs->lock, flags); + + dbg(DEBUG_ANY, "allocated all channels"); + + return 1; +} + +void gigaset_free_channels(struct cardstate *cs) +{ + unsigned long flags; + int i; + + dbg(DEBUG_ANY, "unblocking all channels"); + spin_lock_irqsave(&cs->lock, flags); + for (i = 0; i < cs->channels; ++i) + --cs->bcs[i].use_count; + spin_unlock_irqrestore(&cs->lock, flags); +} + +void gigaset_block_channels(struct cardstate *cs) +{ + unsigned long flags; + int i; + + dbg(DEBUG_ANY, "blocking all channels"); + spin_lock_irqsave(&cs->lock, flags); + for (i = 0; i < cs->channels; ++i) + ++cs->bcs[i].use_count; + spin_unlock_irqrestore(&cs->lock, flags); +} + +static void clear_events(struct cardstate *cs) +{ + struct event_t *ev; + unsigned head, tail; + + /* no locking needed (no reader/writer allowed) */ + + head = atomic_read(&cs->ev_head); + tail = atomic_read(&cs->ev_tail); + + while (tail != head) { + ev = cs->events + head; + kfree(ev->ptr); + + head = (head + 1) % MAX_EVENTS; + } + + atomic_set(&cs->ev_head, tail); +} + +struct event_t *gigaset_add_event(struct cardstate *cs, + struct at_state_t *at_state, int type, + void *ptr, int parameter, void *arg) +{ + unsigned long flags; + unsigned next, tail; + struct event_t *event = NULL; + + spin_lock_irqsave(&cs->ev_lock, flags); + + tail = atomic_read(&cs->ev_tail); + next = (tail + 1) % MAX_EVENTS; + if (unlikely(next == atomic_read(&cs->ev_head))) + err("event queue full"); + else { + event = cs->events + tail; + event->type = type; + event->at_state = at_state; + event->cid = -1; + event->ptr = ptr; + event->arg = arg; + event->parameter = parameter; + atomic_set(&cs->ev_tail, next); + } + + spin_unlock_irqrestore(&cs->ev_lock, flags); + + return event; +} +EXPORT_SYMBOL_GPL(gigaset_add_event); + +static void free_strings(struct at_state_t *at_state) +{ + int i; + + for (i = 0; i < STR_NUM; ++i) { + kfree(at_state->str_var[i]); + at_state->str_var[i] = NULL; + } +} + +static void clear_at_state(struct at_state_t *at_state) +{ + free_strings(at_state); +} + +static void dealloc_at_states(struct cardstate *cs) +{ + struct at_state_t *cur, *next; + + list_for_each_entry_safe(cur, next, &cs->temp_at_states, list) { + list_del(&cur->list); + free_strings(cur); + kfree(cur); + } +} + +static void gigaset_freebcs(struct bc_state *bcs) +{ + int i; + + dbg(DEBUG_INIT, "freeing bcs[%d]->hw", bcs->channel); + if (!bcs->cs->ops->freebcshw(bcs)) { + dbg(DEBUG_INIT, "failed"); + } + + dbg(DEBUG_INIT, "clearing bcs[%d]->at_state", bcs->channel); + clear_at_state(&bcs->at_state); + dbg(DEBUG_INIT, "freeing bcs[%d]->skb", bcs->channel); + + if (bcs->skb) + dev_kfree_skb(bcs->skb); + for (i = 0; i < AT_NUM; ++i) { + kfree(bcs->commands[i]); + bcs->commands[i] = NULL; + } +} + +void gigaset_freecs(struct cardstate *cs) +{ + int i; + unsigned long flags; + + if (!cs) + return; + + down(&cs->sem); + + if (!cs->bcs) + goto f_cs; + if (!cs->inbuf) + goto f_bcs; + + spin_lock_irqsave(&cs->lock, flags); + atomic_set(&cs->running, 0); + spin_unlock_irqrestore(&cs->lock, flags); /* event handler and timer are not rescheduled below */ + + tasklet_kill(&cs->event_tasklet); + del_timer_sync(&cs->timer); + + switch (cs->cs_init) { + default: + gigaset_if_free(cs); + + dbg(DEBUG_INIT, "clearing hw"); + cs->ops->freecshw(cs); + + //FIXME cmdbuf + + /* fall through */ + case 2: /* error in initcshw */ + /* Deregister from LL */ + make_invalid(cs, VALID_ID); + dbg(DEBUG_INIT, "clearing iif"); + gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD); + + /* fall through */ + case 1: /* error when regestering to LL */ + dbg(DEBUG_INIT, "clearing at_state"); + clear_at_state(&cs->at_state); + dealloc_at_states(cs); + + /* fall through */ + case 0: /* error in one call to initbcs */ + for (i = 0; i < cs->channels; ++i) { + dbg(DEBUG_INIT, "clearing bcs[%d]", i); + gigaset_freebcs(cs->bcs + i); + } + + clear_events(cs); + dbg(DEBUG_INIT, "freeing inbuf"); + kfree(cs->inbuf); + } +f_bcs: dbg(DEBUG_INIT, "freeing bcs[]"); + kfree(cs->bcs); +f_cs: dbg(DEBUG_INIT, "freeing cs"); + up(&cs->sem); + free_cs(cs); +} +EXPORT_SYMBOL_GPL(gigaset_freecs); + +void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs, + struct cardstate *cs, int cid) +{ + int i; + + INIT_LIST_HEAD(&at_state->list); + at_state->waiting = 0; + at_state->getstring = 0; + at_state->pending_commands = 0; + at_state->timer_expires = 0; + at_state->timer_active = 0; + atomic_set(&at_state->timer_index, 0); + atomic_set(&at_state->seq_index, 0); + at_state->ConState = 0; + for (i = 0; i < STR_NUM; ++i) + at_state->str_var[i] = NULL; + at_state->int_var[VAR_ZDLE] = 0; + at_state->int_var[VAR_ZCTP] = -1; + at_state->int_var[VAR_ZSAU] = ZSAU_NULL; + at_state->cs = cs; + at_state->bcs = bcs; + at_state->cid = cid; + if (!cid) + at_state->replystruct = cs->tabnocid; + else + at_state->replystruct = cs->tabcid; +} + + +static void gigaset_inbuf_init(struct inbuf_t *inbuf, struct bc_state *bcs, + struct cardstate *cs, int inputstate) +/* inbuf->read must be allocated before! */ +{ + atomic_set(&inbuf->head, 0); + atomic_set(&inbuf->tail, 0); + inbuf->cs = cs; + inbuf->bcs = bcs; /*base driver: NULL*/ + inbuf->rcvbuf = NULL; //FIXME + inbuf->inputstate = inputstate; +} + +/* Initialize the b-channel structure */ +static struct bc_state *gigaset_initbcs(struct bc_state *bcs, + struct cardstate *cs, int channel) +{ + int i; + + bcs->tx_skb = NULL; //FIXME -> hw part + + skb_queue_head_init(&bcs->squeue); + + bcs->corrupted = 0; + bcs->trans_down = 0; + bcs->trans_up = 0; + + dbg(DEBUG_INIT, "setting up bcs[%d]->at_state", channel); + gigaset_at_init(&bcs->at_state, bcs, cs, -1); + + bcs->rcvbytes = 0; + +#ifdef CONFIG_GIGASET_DEBUG + bcs->emptycount = 0; +#endif + + dbg(DEBUG_INIT, "allocating bcs[%d]->skb", channel); + bcs->fcs = PPP_INITFCS; + bcs->inputstate = 0; + if (cs->ignoreframes) { + bcs->inputstate |= INS_skip_frame; + bcs->skb = NULL; + } else if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL) + skb_reserve(bcs->skb, HW_HDR_LEN); + else { + warn("could not allocate skb"); + bcs->inputstate |= INS_skip_frame; + } + + bcs->channel = channel; + bcs->cs = cs; + + bcs->chstate = 0; + bcs->use_count = 1; + bcs->busy = 0; + bcs->ignore = cs->ignoreframes; + + for (i = 0; i < AT_NUM; ++i) + bcs->commands[i] = NULL; + + dbg(DEBUG_INIT, " setting up bcs[%d]->hw", channel); + if (cs->ops->initbcshw(bcs)) + return bcs; + +//error: + dbg(DEBUG_INIT, " failed"); + + dbg(DEBUG_INIT, " freeing bcs[%d]->skb", channel); + if (bcs->skb) + dev_kfree_skb(bcs->skb); + + return NULL; +} + +/* gigaset_initcs + * Allocate and initialize cardstate structure for Gigaset driver + * Calls hardware dependent gigaset_initcshw() function + * Calls B channel initialization function gigaset_initbcs() for each B channel + * parameters: + * drv hardware driver the device belongs to + * channels number of B channels supported by device + * onechannel !=0: B channel data and AT commands share one communication channel + * ==0: B channels have separate communication channels + * ignoreframes number of frames to ignore after setting up B channel + * cidmode !=0: start in CallID mode + * modulename name of driver module (used for I4L registration) + * return value: + * pointer to cardstate structure + */ +struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, + int onechannel, int ignoreframes, + int cidmode, const char *modulename) +{ + struct cardstate *cs = NULL; + int i; + + dbg(DEBUG_INIT, "allocating cs"); + cs = alloc_cs(drv); + if (!cs) + goto error; + dbg(DEBUG_INIT, "allocating bcs[0..%d]", channels - 1); + cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL); + if (!cs->bcs) + goto error; + dbg(DEBUG_INIT, "allocating inbuf"); + cs->inbuf = kmalloc(sizeof(struct inbuf_t), GFP_KERNEL); + if (!cs->inbuf) + goto error; + + cs->cs_init = 0; + cs->channels = channels; + cs->onechannel = onechannel; + cs->ignoreframes = ignoreframes; + INIT_LIST_HEAD(&cs->temp_at_states); + atomic_set(&cs->running, 0); + init_timer(&cs->timer); /* clear next & prev */ + spin_lock_init(&cs->ev_lock); + atomic_set(&cs->ev_tail, 0); + atomic_set(&cs->ev_head, 0); + init_MUTEX_LOCKED(&cs->sem); + tasklet_init(&cs->event_tasklet, &gigaset_handle_event, (unsigned long) cs); + atomic_set(&cs->commands_pending, 0); + cs->cur_at_seq = 0; + cs->gotfwver = -1; + cs->open_count = 0; + cs->tty = NULL; + atomic_set(&cs->cidmode, cidmode != 0); + + //if(onechannel) { //FIXME + cs->tabnocid = gigaset_tab_nocid_m10x; + cs->tabcid = gigaset_tab_cid_m10x; + //} else { + // cs->tabnocid = gigaset_tab_nocid; + // cs->tabcid = gigaset_tab_cid; + //} + + init_waitqueue_head(&cs->waitqueue); + cs->waiting = 0; + + atomic_set(&cs->mode, M_UNKNOWN); + atomic_set(&cs->mstate, MS_UNINITIALIZED); + + for (i = 0; i < channels; ++i) { + dbg(DEBUG_INIT, "setting up bcs[%d].read", i); + if (!gigaset_initbcs(cs->bcs + i, cs, i)) + goto error; + } + + ++cs->cs_init; + + dbg(DEBUG_INIT, "setting up at_state"); + spin_lock_init(&cs->lock); + gigaset_at_init(&cs->at_state, NULL, cs, 0); + cs->dle = 0; + cs->cbytes = 0; + + dbg(DEBUG_INIT, "setting up inbuf"); + if (onechannel) { //FIXME distinction necessary? + gigaset_inbuf_init(cs->inbuf, cs->bcs, cs, INS_command); + } else + gigaset_inbuf_init(cs->inbuf, NULL, cs, INS_command); + + atomic_set(&cs->connected, 0); + + dbg(DEBUG_INIT, "setting up cmdbuf"); + cs->cmdbuf = cs->lastcmdbuf = NULL; + spin_lock_init(&cs->cmdlock); + cs->curlen = 0; + cs->cmdbytes = 0; + + /* + * Tell the ISDN4Linux subsystem (the LL) that + * a driver for a USB-Device is available ! + * If this is done, "isdnctrl" is able to bind a device for this driver even + * if no physical usb-device is currently connected. + * But this device will just be accessable if a physical USB device is connected + * (via "gigaset_probe") . + */ + dbg(DEBUG_INIT, "setting up iif"); + if (!gigaset_register_to_LL(cs, modulename)) { + err("register_isdn=>error"); + goto error; + } + + make_valid(cs, VALID_ID); + ++cs->cs_init; + dbg(DEBUG_INIT, "setting up hw"); + if (!cs->ops->initcshw(cs)) + goto error; + + ++cs->cs_init; + + gigaset_if_init(cs); + + atomic_set(&cs->running, 1); + cs->timer.data = (unsigned long) cs; + cs->timer.function = timer_tick; + cs->timer.expires = jiffies + GIG_TICK; + /* FIXME: can jiffies increase too much until the timer is added? + * Same problem(?) with mod_timer() in timer_tick(). */ + add_timer(&cs->timer); + + dbg(DEBUG_INIT, "cs initialized!"); + up(&cs->sem); + return cs; + +error: if (cs) + up(&cs->sem); + dbg(DEBUG_INIT, "failed"); + gigaset_freecs(cs); + return NULL; +} +EXPORT_SYMBOL_GPL(gigaset_initcs); + +/* ReInitialize the b-channel structure */ /* e.g. called on hangup, disconnect */ +void gigaset_bcs_reinit(struct bc_state *bcs) +{ + struct sk_buff *skb; + struct cardstate *cs = bcs->cs; + unsigned long flags; + + while ((skb = skb_dequeue(&bcs->squeue)) != NULL) + dev_kfree_skb(skb); + + spin_lock_irqsave(&cs->lock, flags); //FIXME + clear_at_state(&bcs->at_state); + bcs->at_state.ConState = 0; + bcs->at_state.timer_active = 0; + bcs->at_state.timer_expires = 0; + bcs->at_state.cid = -1; /* No CID defined */ + spin_unlock_irqrestore(&cs->lock, flags); + + bcs->inputstate = 0; + +#ifdef CONFIG_GIGASET_DEBUG + bcs->emptycount = 0; +#endif + + bcs->fcs = PPP_INITFCS; + bcs->chstate = 0; + + bcs->ignore = cs->ignoreframes; + if (bcs->ignore) + bcs->inputstate |= INS_skip_frame; + + + cs->ops->reinitbcshw(bcs); +} + +static void cleanup_cs(struct cardstate *cs) +{ + struct cmdbuf_t *cb, *tcb; + int i; + unsigned long flags; + + spin_lock_irqsave(&cs->lock, flags); + + atomic_set(&cs->mode, M_UNKNOWN); + atomic_set(&cs->mstate, MS_UNINITIALIZED); + + clear_at_state(&cs->at_state); + dealloc_at_states(cs); + free_strings(&cs->at_state); + gigaset_at_init(&cs->at_state, NULL, cs, 0); + + kfree(cs->inbuf->rcvbuf); + cs->inbuf->rcvbuf = NULL; + cs->inbuf->inputstate = INS_command; + atomic_set(&cs->inbuf->head, 0); + atomic_set(&cs->inbuf->tail, 0); + + cb = cs->cmdbuf; + while (cb) { + tcb = cb; + cb = cb->next; + kfree(tcb); + } + cs->cmdbuf = cs->lastcmdbuf = NULL; + cs->curlen = 0; + cs->cmdbytes = 0; + cs->gotfwver = -1; + cs->dle = 0; + cs->cur_at_seq = 0; + atomic_set(&cs->commands_pending, 0); + cs->cbytes = 0; + + spin_unlock_irqrestore(&cs->lock, flags); + + for (i = 0; i < cs->channels; ++i) { + gigaset_freebcs(cs->bcs + i); + if (!gigaset_initbcs(cs->bcs + i, cs, i)) + break; //FIXME error handling + } + + if (cs->waiting) { + cs->cmd_result = -ENODEV; + cs->waiting = 0; + wake_up_interruptible(&cs->waitqueue); + } +} + + +int gigaset_start(struct cardstate *cs) +{ + if (down_interruptible(&cs->sem)) + return 0; + //info("USB device for Gigaset 307x now attached to Dev %d", ucs->minor); + + atomic_set(&cs->connected, 1); + + if (atomic_read(&cs->mstate) != MS_LOCKED) { + cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS); + cs->ops->baud_rate(cs, B115200); + cs->ops->set_line_ctrl(cs, CS8); + cs->control_state = TIOCM_DTR|TIOCM_RTS; + } else { + //FIXME use some saved values? + } + + cs->waiting = 1; + + if (!gigaset_add_event(cs, &cs->at_state, EV_START, NULL, 0, NULL)) { + cs->waiting = 0; + //FIXME what should we do? + goto error; + } + + dbg(DEBUG_CMD, "scheduling START"); + gigaset_schedule_event(cs); + + wait_event(cs->waitqueue, !cs->waiting); + + up(&cs->sem); + return 1; + +error: + up(&cs->sem); + return 0; +} +EXPORT_SYMBOL_GPL(gigaset_start); + +void gigaset_shutdown(struct cardstate *cs) +{ + down(&cs->sem); + + cs->waiting = 1; + + if (!gigaset_add_event(cs, &cs->at_state, EV_SHUTDOWN, NULL, 0, NULL)) { + //FIXME what should we do? + goto exit; + } + + dbg(DEBUG_CMD, "scheduling SHUTDOWN"); + gigaset_schedule_event(cs); + + if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) { + warn("aborted"); + //FIXME + } + + if (atomic_read(&cs->mstate) != MS_LOCKED) { + //FIXME? + //gigaset_baud_rate(cs, B115200); + //gigaset_set_line_ctrl(cs, CS8); + //gigaset_set_modem_ctrl(cs, TIOCM_DTR|TIOCM_RTS, 0); + //cs->control_state = 0; + } else { + //FIXME use some saved values? + } + + cleanup_cs(cs); + +exit: + up(&cs->sem); +} +EXPORT_SYMBOL_GPL(gigaset_shutdown); + +void gigaset_stop(struct cardstate *cs) +{ + down(&cs->sem); + + atomic_set(&cs->connected, 0); + + cs->waiting = 1; + + if (!gigaset_add_event(cs, &cs->at_state, EV_STOP, NULL, 0, NULL)) { + //FIXME what should we do? + goto exit; + } + + dbg(DEBUG_CMD, "scheduling STOP"); + gigaset_schedule_event(cs); + + if (wait_event_interruptible(cs->waitqueue, !cs->waiting)) { + warn("aborted"); + //FIXME + } + + /* Tell the LL that the device is not available .. */ + gigaset_i4l_cmd(cs, ISDN_STAT_STOP); // FIXME move to event layer? + + cleanup_cs(cs); + +exit: + up(&cs->sem); +} +EXPORT_SYMBOL_GPL(gigaset_stop); + +static LIST_HEAD(drivers); +static spinlock_t driver_lock = SPIN_LOCK_UNLOCKED; + +struct cardstate *gigaset_get_cs_by_id(int id) +{ + unsigned long flags; + static struct cardstate *ret = NULL; + static struct cardstate *cs; + struct gigaset_driver *drv; + unsigned i; + + spin_lock_irqsave(&driver_lock, flags); + list_for_each_entry(drv, &drivers, list) { + spin_lock(&drv->lock); + for (i = 0; i < drv->minors; ++i) { + if (drv->flags[i] & VALID_ID) { + cs = drv->cs + i; + if (cs->myid == id) + ret = cs; + } + if (ret) + break; + } + spin_unlock(&drv->lock); + if (ret) + break; + } + spin_unlock_irqrestore(&driver_lock, flags); + return ret; +} + +void gigaset_debugdrivers(void) +{ + unsigned long flags; + static struct cardstate *cs; + struct gigaset_driver *drv; + unsigned i; + + spin_lock_irqsave(&driver_lock, flags); + list_for_each_entry(drv, &drivers, list) { + dbg(DEBUG_DRIVER, "driver %p", drv); + spin_lock(&drv->lock); + for (i = 0; i < drv->minors; ++i) { + dbg(DEBUG_DRIVER, " index %u", i); + dbg(DEBUG_DRIVER, " flags 0x%02x", drv->flags[i]); + cs = drv->cs + i; + dbg(DEBUG_DRIVER, " cardstate %p", cs); + dbg(DEBUG_DRIVER, " minor_index %u", cs->minor_index); + dbg(DEBUG_DRIVER, " driver %p", cs->driver); + dbg(DEBUG_DRIVER, " i4l id %d", cs->myid); + } + spin_unlock(&drv->lock); + } + spin_unlock_irqrestore(&driver_lock, flags); +} +EXPORT_SYMBOL_GPL(gigaset_debugdrivers); + +struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty) +{ + if (tty->index < 0 || tty->index >= tty->driver->num) + return NULL; + return gigaset_get_cs_by_minor(tty->index + tty->driver->minor_start); +} + +struct cardstate *gigaset_get_cs_by_minor(unsigned minor) +{ + unsigned long flags; + static struct cardstate *ret = NULL; + struct gigaset_driver *drv; + unsigned index; + + spin_lock_irqsave(&driver_lock, flags); + list_for_each_entry(drv, &drivers, list) { + if (minor < drv->minor || minor >= drv->minor + drv->minors) + continue; + index = minor - drv->minor; + spin_lock(&drv->lock); + if (drv->flags[index] & VALID_MINOR) + ret = drv->cs + index; + spin_unlock(&drv->lock); + if (ret) + break; + } + spin_unlock_irqrestore(&driver_lock, flags); + return ret; +} + +void gigaset_freedriver(struct gigaset_driver *drv) +{ + unsigned long flags; + + spin_lock_irqsave(&driver_lock, flags); + list_del(&drv->list); + spin_unlock_irqrestore(&driver_lock, flags); + + gigaset_if_freedriver(drv); + module_put(drv->owner); + + kfree(drv->cs); + kfree(drv->flags); + kfree(drv); +} +EXPORT_SYMBOL_GPL(gigaset_freedriver); + +/* gigaset_initdriver + * Allocate and initialize gigaset_driver structure. Initialize interface. + * parameters: + * minor First minor number + * minors Number of minors this driver can handle + * procname Name of the driver (e.g. for /proc/tty/drivers, path in /proc/driver) + * devname Name of the device files (prefix without minor number) + * devfsname Devfs name of the device files without %d + * return value: + * Pointer to the gigaset_driver structure on success, NULL on failure. + */ +struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, + const char *procname, + const char *devname, + const char *devfsname, + const struct gigaset_ops *ops, + struct module *owner) +{ + struct gigaset_driver *drv; + unsigned long flags; + unsigned i; + + drv = kmalloc(sizeof *drv, GFP_KERNEL); + if (!drv) + return NULL; + if (!try_module_get(owner)) + return NULL; + + drv->cs = NULL; + drv->have_tty = 0; + drv->minor = minor; + drv->minors = minors; + spin_lock_init(&drv->lock); + drv->blocked = 0; + drv->ops = ops; + drv->owner = owner; + INIT_LIST_HEAD(&drv->list); + + drv->cs = kmalloc(minors * sizeof *drv->cs, GFP_KERNEL); + if (!drv->cs) + goto out1; + drv->flags = kmalloc(minors * sizeof *drv->flags, GFP_KERNEL); + if (!drv->flags) + goto out2; + + for (i = 0; i < minors; ++i) { + drv->flags[i] = 0; + drv->cs[i].driver = drv; + drv->cs[i].ops = drv->ops; + drv->cs[i].minor_index = i; + } + + gigaset_if_initdriver(drv, procname, devname, devfsname); + + spin_lock_irqsave(&driver_lock, flags); + list_add(&drv->list, &drivers); + spin_unlock_irqrestore(&driver_lock, flags); + + return drv; + +out2: + kfree(drv->cs); +out1: + kfree(drv); + module_put(owner); + return NULL; +} +EXPORT_SYMBOL_GPL(gigaset_initdriver); + +static struct cardstate *alloc_cs(struct gigaset_driver *drv) +{ + unsigned long flags; + unsigned i; + static struct cardstate *ret = NULL; + + spin_lock_irqsave(&drv->lock, flags); + for (i = 0; i < drv->minors; ++i) { + if (!(drv->flags[i] & VALID_MINOR)) { + drv->flags[i] = VALID_MINOR; + ret = drv->cs + i; + } + if (ret) + break; + } + spin_unlock_irqrestore(&drv->lock, flags); + return ret; +} + +static void free_cs(struct cardstate *cs) +{ + unsigned long flags; + struct gigaset_driver *drv = cs->driver; + spin_lock_irqsave(&drv->lock, flags); + drv->flags[cs->minor_index] = 0; + spin_unlock_irqrestore(&drv->lock, flags); +} + +static void make_valid(struct cardstate *cs, unsigned mask) +{ + unsigned long flags; + struct gigaset_driver *drv = cs->driver; + spin_lock_irqsave(&drv->lock, flags); + drv->flags[cs->minor_index] |= mask; + spin_unlock_irqrestore(&drv->lock, flags); +} + +static void make_invalid(struct cardstate *cs, unsigned mask) +{ + unsigned long flags; + struct gigaset_driver *drv = cs->driver; + spin_lock_irqsave(&drv->lock, flags); + drv->flags[cs->minor_index] &= ~mask; + spin_unlock_irqrestore(&drv->lock, flags); +} + +/* For drivers without fixed assignment device<->cardstate (usb) */ +struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv) +{ + unsigned long flags; + struct cardstate *cs = NULL; + unsigned i; + + spin_lock_irqsave(&drv->lock, flags); + if (drv->blocked) + goto exit; + for (i = 0; i < drv->minors; ++i) { + if ((drv->flags[i] & VALID_MINOR) && + !(drv->flags[i] & ASSIGNED)) { + drv->flags[i] |= ASSIGNED; + cs = drv->cs + i; + break; + } + } +exit: + spin_unlock_irqrestore(&drv->lock, flags); + return cs; +} +EXPORT_SYMBOL_GPL(gigaset_getunassignedcs); + +void gigaset_unassign(struct cardstate *cs) +{ + unsigned long flags; + unsigned *minor_flags; + struct gigaset_driver *drv; + + if (!cs) + return; + drv = cs->driver; + spin_lock_irqsave(&drv->lock, flags); + minor_flags = drv->flags + cs->minor_index; + if (*minor_flags & VALID_MINOR) + *minor_flags &= ~ASSIGNED; + spin_unlock_irqrestore(&drv->lock, flags); +} +EXPORT_SYMBOL_GPL(gigaset_unassign); + +void gigaset_blockdriver(struct gigaset_driver *drv) +{ + unsigned long flags; + spin_lock_irqsave(&drv->lock, flags); + drv->blocked = 1; + spin_unlock_irqrestore(&drv->lock, flags); +} +EXPORT_SYMBOL_GPL(gigaset_blockdriver); + +static int __init gigaset_init_module(void) +{ + /* in accordance with the principle of least astonishment, + * setting the 'debug' parameter to 1 activates a sensible + * set of default debug levels + */ + if (gigaset_debuglevel == 1) + gigaset_debuglevel = DEBUG_DEFAULT; + + info(DRIVER_AUTHOR); + info(DRIVER_DESC); + return 0; +} + +static void __exit gigaset_exit_module(void) +{ +} + +module_init(gigaset_init_module); +module_exit(gigaset_exit_module); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); + +MODULE_LICENSE("GPL"); diff --git a/drivers/isdn/gigaset/ev-layer.c b/drivers/isdn/gigaset/ev-layer.c new file mode 100644 index 00000000000..fdcb80bb21c --- /dev/null +++ b/drivers/isdn/gigaset/ev-layer.c @@ -0,0 +1,1983 @@ +/* + * Stuff used by all variants of the driver + * + * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>, + * Hansjoerg Lipp <hjlipp@web.de>, + * Tilman Schmidt <tilman@imap.cc>. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: ev-layer.c,v 1.4.2.18 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" + +/* ========================================================== */ +/* bit masks for pending commands */ +#define PC_INIT 0x004 +#define PC_DLE0 0x008 +#define PC_DLE1 0x010 +#define PC_CID 0x080 +#define PC_NOCID 0x100 +#define PC_HUP 0x002 +#define PC_DIAL 0x001 +#define PC_ACCEPT 0x040 +#define PC_SHUTDOWN 0x020 +#define PC_CIDMODE 0x200 +#define PC_UMMODE 0x400 + +/* types of modem responses */ +#define RT_NOTHING 0 +#define RT_ZSAU 1 +#define RT_RING 2 +#define RT_NUMBER 3 +#define RT_STRING 4 +#define RT_HEX 5 +#define RT_ZCAU 6 + +/* Possible ASCII responses */ +#define RSP_OK 0 +//#define RSP_BUSY 1 +//#define RSP_CONNECT 2 +#define RSP_ZGCI 3 +#define RSP_RING 4 +#define RSP_ZAOC 5 +#define RSP_ZCSTR 6 +#define RSP_ZCFGT 7 +#define RSP_ZCFG 8 +#define RSP_ZCCR 9 +#define RSP_EMPTY 10 +#define RSP_ZLOG 11 +#define RSP_ZCAU 12 +#define RSP_ZMWI 13 +#define RSP_ZABINFO 14 +#define RSP_ZSMLSTCHG 15 +#define RSP_VAR 100 +#define RSP_ZSAU (RSP_VAR + VAR_ZSAU) +#define RSP_ZDLE (RSP_VAR + VAR_ZDLE) +#define RSP_ZVLS (RSP_VAR + VAR_ZVLS) +#define RSP_ZCTP (RSP_VAR + VAR_ZCTP) +#define RSP_STR (RSP_VAR + VAR_NUM) +#define RSP_NMBR (RSP_STR + STR_NMBR) +#define RSP_ZCPN (RSP_STR + STR_ZCPN) +#define RSP_ZCON (RSP_STR + STR_ZCON) +#define RSP_ZBC (RSP_STR + STR_ZBC) +#define RSP_ZHLC (RSP_STR + STR_ZHLC) +#define RSP_ERROR -1 /* ERROR */ +#define RSP_WRONG_CID -2 /* unknown cid in cmd */ +//#define RSP_EMPTY -3 +#define RSP_UNKNOWN -4 /* unknown response */ +#define RSP_FAIL -5 /* internal error */ +#define RSP_INVAL -6 /* invalid response */ + +#define RSP_NONE -19 +#define RSP_STRING -20 +#define RSP_NULL -21 +//#define RSP_RETRYFAIL -22 +//#define RSP_RETRY -23 +//#define RSP_SKIP -24 +#define RSP_INIT -27 +#define RSP_ANY -26 +#define RSP_LAST -28 +#define RSP_NODEV -9 + +/* actions for process_response */ +#define ACT_NOTHING 0 +#define ACT_SETDLE1 1 +#define ACT_SETDLE0 2 +#define ACT_FAILINIT 3 +#define ACT_HUPMODEM 4 +#define ACT_CONFIGMODE 5 +#define ACT_INIT 6 +#define ACT_DLE0 7 +#define ACT_DLE1 8 +#define ACT_FAILDLE0 9 +#define ACT_FAILDLE1 10 +#define ACT_RING 11 +#define ACT_CID 12 +#define ACT_FAILCID 13 +#define ACT_SDOWN 14 +#define ACT_FAILSDOWN 15 +#define ACT_DEBUG 16 +#define ACT_WARN 17 +#define ACT_DIALING 18 +#define ACT_ABORTDIAL 19 +#define ACT_DISCONNECT 20 +#define ACT_CONNECT 21 +#define ACT_REMOTEREJECT 22 +#define ACT_CONNTIMEOUT 23 +#define ACT_REMOTEHUP 24 +#define ACT_ABORTHUP 25 +#define ACT_ICALL 26 +#define ACT_ACCEPTED 27 +#define ACT_ABORTACCEPT 28 +#define ACT_TIMEOUT 29 +#define ACT_GETSTRING 30 +#define ACT_SETVER 31 +#define ACT_FAILVER 32 +#define ACT_GOTVER 33 +#define ACT_TEST 34 +#define ACT_ERROR 35 +#define ACT_ABORTCID 36 +#define ACT_ZCAU 37 +#define ACT_NOTIFY_BC_DOWN 38 +#define ACT_NOTIFY_BC_UP 39 +#define ACT_DIAL 40 +#define ACT_ACCEPT 41 +#define ACT_PROTO_L2 42 +#define ACT_HUP 43 +#define ACT_IF_LOCK 44 +#define ACT_START 45 +#define ACT_STOP 46 +#define ACT_FAKEDLE0 47 +#define ACT_FAKEHUP 48 +#define ACT_FAKESDOWN 49 +#define ACT_SHUTDOWN 50 +#define ACT_PROC_CIDMODE 51 +#define ACT_UMODESET 52 +#define ACT_FAILUMODE 53 +#define ACT_CMODESET 54 +#define ACT_FAILCMODE 55 +#define ACT_IF_VER 56 +#define ACT_CMD 100 + +/* at command sequences */ +#define SEQ_NONE 0 +#define SEQ_INIT 100 +#define SEQ_DLE0 200 +#define SEQ_DLE1 250 +#define SEQ_CID 300 +#define SEQ_NOCID 350 +#define SEQ_HUP 400 +#define SEQ_DIAL 600 +#define SEQ_ACCEPT 720 +#define SEQ_SHUTDOWN 500 +#define SEQ_CIDMODE 10 +#define SEQ_UMMODE 11 + + +// 100: init, 200: dle0, 250:dle1, 300: get cid (dial), 350: "hup" (no cid), 400: hup, 500: reset, 600: dial, 700: ring +struct reply_t gigaset_tab_nocid_m10x[]= /* with dle mode */ +{ + /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */ + + /* initialize device, set cid mode if possible */ + //{RSP_INIT, -1, -1,100, 900, 0, {ACT_TEST}}, + //{RSP_ERROR, 900,900, -1, 0, 0, {ACT_FAILINIT}}, + //{RSP_OK, 900,900, -1, 100, INIT_TIMEOUT, + // {ACT_TIMEOUT}}, + + {RSP_INIT, -1, -1,SEQ_INIT, 100, INIT_TIMEOUT, + {ACT_TIMEOUT}}, /* wait until device is ready */ + + {EV_TIMEOUT, 100,100, -1, 101, 3, {0}, "Z\r"}, /* device in transparent mode? try to initialize it. */ + {RSP_OK, 101,103, -1, 120, 5, {ACT_GETSTRING}, "+GMR\r"}, /* get version */ + + {EV_TIMEOUT, 101,101, -1, 102, 5, {0}, "Z\r"}, /* timeout => try once again. */ + {RSP_ERROR, 101,101, -1, 102, 5, {0}, "Z\r"}, /* error => try once again. */ + + {EV_TIMEOUT, 102,102, -1, 108, 5, {ACT_SETDLE1}, "^SDLE=0\r"}, /* timeout => try again in DLE mode. */ + {RSP_OK, 108,108, -1, 104,-1}, + {RSP_ZDLE, 104,104, 0, 103, 5, {0}, "Z\r"}, + {EV_TIMEOUT, 104,104, -1, 0, 0, {ACT_FAILINIT}}, + {RSP_ERROR, 108,108, -1, 0, 0, {ACT_FAILINIT}}, + + {EV_TIMEOUT, 108,108, -1, 105, 2, {ACT_SETDLE0, + ACT_HUPMODEM, + ACT_TIMEOUT}}, /* still timeout => connection in unimodem mode? */ + {EV_TIMEOUT, 105,105, -1, 103, 5, {0}, "Z\r"}, + + {RSP_ERROR, 102,102, -1, 107, 5, {0}, "^GETPRE\r"}, /* ERROR on ATZ => maybe in config mode? */ + {RSP_OK, 107,107, -1, 0, 0, {ACT_CONFIGMODE}}, + {RSP_ERROR, 107,107, -1, 0, 0, {ACT_FAILINIT}}, + {EV_TIMEOUT, 107,107, -1, 0, 0, {ACT_FAILINIT}}, + + {RSP_ERROR, 103,103, -1, 0, 0, {ACT_FAILINIT}}, + {EV_TIMEOUT, 103,103, -1, 0, 0, {ACT_FAILINIT}}, + + {RSP_STRING, 120,120, -1, 121,-1, {ACT_SETVER}}, + + {EV_TIMEOUT, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}}, + {RSP_ERROR, 120,121, -1, 0, 0, {ACT_FAILVER, ACT_INIT}}, + {RSP_OK, 121,121, -1, 0, 0, {ACT_GOTVER, ACT_INIT}}, +#if 0 + {EV_TIMEOUT, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"}, + {RSP_ERROR, 120,121, -1, 130, 5, {ACT_FAILVER}, "^SGCI=1\r"}, + {RSP_OK, 121,121, -1, 130, 5, {ACT_GOTVER}, "^SGCI=1\r"}, + + {RSP_OK, 130,130, -1, 0, 0, {ACT_INIT}}, + {RSP_ERROR, 130,130, -1, 0, 0, {ACT_FAILINIT}}, + {EV_TIMEOUT, 130,130, -1, 0, 0, {ACT_FAILINIT}}, +#endif + + /* leave dle mode */ + {RSP_INIT, 0, 0,SEQ_DLE0, 201, 5, {0}, "^SDLE=0\r"}, + {RSP_OK, 201,201, -1, 202,-1}, + //{RSP_ZDLE, 202,202, 0, 202, 0, {ACT_ERROR}},//DELETE + {RSP_ZDLE, 202,202, 0, 0, 0, {ACT_DLE0}}, + {RSP_NODEV, 200,249, -1, 0, 0, {ACT_FAKEDLE0}}, + {RSP_ERROR, 200,249, -1, 0, 0, {ACT_FAILDLE0}}, + {EV_TIMEOUT, 200,249, -1, 0, 0, {ACT_FAILDLE0}}, + + /* enter dle mode */ + {RSP_INIT, 0, 0,SEQ_DLE1, 251, 5, {0}, "^SDLE=1\r"}, + {RSP_OK, 251,251, -1, 252,-1}, + {RSP_ZDLE, 252,252, 1, 0, 0, {ACT_DLE1}}, + {RSP_ERROR, 250,299, -1, 0, 0, {ACT_FAILDLE1}}, + {EV_TIMEOUT, 250,299, -1, 0, 0, {ACT_FAILDLE1}}, + + /* incoming call */ + {RSP_RING, -1, -1, -1, -1,-1, {ACT_RING}}, + + /* get cid */ + //{RSP_INIT, 0, 0,300, 901, 0, {ACT_TEST}}, + //{RSP_ERROR, 901,901, -1, 0, 0, {ACT_FAILCID}}, + //{RSP_OK, 901,901, -1, 301, 5, {0}, "^SGCI?\r"}, + + {RSP_INIT, 0, 0,SEQ_CID, 301, 5, {0}, "^SGCI?\r"}, + {RSP_OK, 301,301, -1, 302,-1}, + {RSP_ZGCI, 302,302, -1, 0, 0, {ACT_CID}}, + {RSP_ERROR, 301,349, -1, 0, 0, {ACT_FAILCID}}, + {EV_TIMEOUT, 301,349, -1, 0, 0, {ACT_FAILCID}}, + + /* enter cid mode */ + {RSP_INIT, 0, 0,SEQ_CIDMODE, 150, 5, {0}, "^SGCI=1\r"}, + {RSP_OK, 150,150, -1, 0, 0, {ACT_CMODESET}}, + {RSP_ERROR, 150,150, -1, 0, 0, {ACT_FAILCMODE}}, + {EV_TIMEOUT, 150,150, -1, 0, 0, {ACT_FAILCMODE}}, + + /* leave cid mode */ + //{RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "^SGCI=0\r"}, + {RSP_INIT, 0, 0,SEQ_UMMODE, 160, 5, {0}, "Z\r"}, + {RSP_OK, 160,160, -1, 0, 0, {ACT_UMODESET}}, + {RSP_ERROR, 160,160, -1, 0, 0, {ACT_FAILUMODE}}, + {EV_TIMEOUT, 160,160, -1, 0, 0, {ACT_FAILUMODE}}, + + /* abort getting cid */ + {RSP_INIT, 0, 0,SEQ_NOCID, 0, 0, {ACT_ABORTCID}}, + + /* reset */ +#if 0 + {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 503, 5, {0}, "^SGCI=0\r"}, + {RSP_OK, 503,503, -1, 504, 5, {0}, "Z\r"}, +#endif + {RSP_INIT, 0, 0,SEQ_SHUTDOWN, 504, 5, {0}, "Z\r"}, + {RSP_OK, 504,504, -1, 0, 0, {ACT_SDOWN}}, + {RSP_ERROR, 501,599, -1, 0, 0, {ACT_FAILSDOWN}}, + {EV_TIMEOUT, 501,599, -1, 0, 0, {ACT_FAILSDOWN}}, + {RSP_NODEV, 501,599, -1, 0, 0, {ACT_FAKESDOWN}}, + + {EV_PROC_CIDMODE,-1, -1, -1, -1,-1, {ACT_PROC_CIDMODE}}, //FIXME + {EV_IF_LOCK, -1, -1, -1, -1,-1, {ACT_IF_LOCK}}, //FIXME + {EV_IF_VER, -1, -1, -1, -1,-1, {ACT_IF_VER}}, //FIXME + {EV_START, -1, -1, -1, -1,-1, {ACT_START}}, //FIXME + {EV_STOP, -1, -1, -1, -1,-1, {ACT_STOP}}, //FIXME + {EV_SHUTDOWN, -1, -1, -1, -1,-1, {ACT_SHUTDOWN}}, //FIXME + + /* misc. */ + {RSP_EMPTY, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZCFGT, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZCFG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZLOG, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZMWI, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZABINFO, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZSMLSTCHG,-1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + + {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}}, + {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}}, + {RSP_LAST} +}; + +// 600: start dialing, 650: dial in progress, 800: connection is up, 700: ring, 400: hup, 750: accepted icall +struct reply_t gigaset_tab_cid_m10x[] = /* for M10x */ +{ + /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */ + + /* dial */ + {EV_DIAL, -1, -1, -1, -1,-1, {ACT_DIAL}}, //FIXME + {RSP_INIT, 0, 0,SEQ_DIAL, 601, 5, {ACT_CMD+AT_BC}}, + {RSP_OK, 601,601, -1, 602, 5, {ACT_CMD+AT_HLC}}, + {RSP_NULL, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}}, + {RSP_OK, 602,602, -1, 603, 5, {ACT_CMD+AT_PROTO}}, + {RSP_OK, 603,603, -1, 604, 5, {ACT_CMD+AT_TYPE}}, + {RSP_OK, 604,604, -1, 605, 5, {ACT_CMD+AT_MSN}}, + {RSP_OK, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}}, + {RSP_NULL, 605,605, -1, 606, 5, {ACT_CMD+AT_ISO}}, + {RSP_OK, 606,606, -1, 607, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */ + {RSP_OK, 607,607, -1, 608,-1}, + //{RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 608, 0, {ACT_ERROR}},//DELETE + {RSP_ZSAU, 608,608,ZSAU_PROCEEDING, 609, 5, {ACT_CMD+AT_DIAL}}, + {RSP_OK, 609,609, -1, 650, 0, {ACT_DIALING}}, + + {RSP_ZVLS, 608,608, 17, -1,-1, {ACT_DEBUG}}, + {RSP_ZCTP, 609,609, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ZCPN, 609,609, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ERROR, 601,609, -1, 0, 0, {ACT_ABORTDIAL}}, + {EV_TIMEOUT, 601,609, -1, 0, 0, {ACT_ABORTDIAL}}, + + /* dialing */ + {RSP_ZCTP, 650,650, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ZCPN, 650,650, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ZSAU, 650,650,ZSAU_CALL_DELIVERED, -1,-1, {ACT_DEBUG}}, /* some devices don't send this */ + + /* connection established */ + {RSP_ZSAU, 650,650,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1 + {RSP_ZSAU, 750,750,ZSAU_ACTIVE, 800,-1, {ACT_CONNECT}}, //FIXME -> DLE1 + + {EV_BC_OPEN, 800,800, -1, 800,-1, {ACT_NOTIFY_BC_UP}}, //FIXME new constate + timeout + + /* remote hangup */ + {RSP_ZSAU, 650,650,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEREJECT}}, + {RSP_ZSAU, 750,750,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}}, + {RSP_ZSAU, 800,800,ZSAU_DISCONNECT_IND, 0, 0, {ACT_REMOTEHUP}}, + + /* hangup */ + {EV_HUP, -1, -1, -1, -1,-1, {ACT_HUP}}, //FIXME + {RSP_INIT, -1, -1,SEQ_HUP, 401, 5, {0}, "+VLS=0\r"}, /* hang up */ //-1,-1? + {RSP_OK, 401,401, -1, 402, 5}, + {RSP_ZVLS, 402,402, 0, 403, 5}, + {RSP_ZSAU, 403,403,ZSAU_DISCONNECT_REQ, -1,-1, {ACT_DEBUG}}, /* if not remote hup */ + //{RSP_ZSAU, 403,403,ZSAU_NULL, 401, 0, {ACT_ERROR}}, //DELETE//FIXME -> DLE0 // should we do this _before_ hanging up for base driver? + {RSP_ZSAU, 403,403,ZSAU_NULL, 0, 0, {ACT_DISCONNECT}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver? + {RSP_NODEV, 401,403, -1, 0, 0, {ACT_FAKEHUP}}, //FIXME -> DLE0 // should we do this _before_ hanging up for base driver? + {RSP_ERROR, 401,401, -1, 0, 0, {ACT_ABORTHUP}}, + {EV_TIMEOUT, 401,403, -1, 0, 0, {ACT_ABORTHUP}}, + + {EV_BC_CLOSED, 0, 0, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, //FIXME new constate + timeout + + /* ring */ + {RSP_ZBC, 700,700, -1, -1,-1, {0}}, + {RSP_ZHLC, 700,700, -1, -1,-1, {0}}, + {RSP_NMBR, 700,700, -1, -1,-1, {0}}, + {RSP_ZCPN, 700,700, -1, -1,-1, {0}}, + {RSP_ZCTP, 700,700, -1, -1,-1, {0}}, + {EV_TIMEOUT, 700,700, -1, 720,720, {ACT_ICALL}}, + {EV_BC_CLOSED,720,720, -1, 0,-1, {ACT_NOTIFY_BC_DOWN}}, + + /*accept icall*/ + {EV_ACCEPT, -1, -1, -1, -1,-1, {ACT_ACCEPT}}, //FIXME + {RSP_INIT, 720,720,SEQ_ACCEPT, 721, 5, {ACT_CMD+AT_PROTO}}, + {RSP_OK, 721,721, -1, 722, 5, {ACT_CMD+AT_ISO}}, + {RSP_OK, 722,722, -1, 723, 5, {0}, "+VLS=17\r"}, /* set "Endgeraetemodus" */ + {RSP_OK, 723,723, -1, 724, 5, {0}}, + {RSP_ZVLS, 724,724, 17, 750,50, {ACT_ACCEPTED}}, + {RSP_ERROR, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}}, + {EV_TIMEOUT, 721,729, -1, 0, 0, {ACT_ABORTACCEPT}}, + {RSP_ZSAU, 700,729,ZSAU_NULL, 0, 0, {ACT_ABORTACCEPT}}, + {RSP_ZSAU, 700,729,ZSAU_ACTIVE, 0, 0, {ACT_ABORTACCEPT}}, + {RSP_ZSAU, 700,729,ZSAU_DISCONNECT_IND, 0, 0, {ACT_ABORTACCEPT}}, + + {EV_TIMEOUT, 750,750, -1, 0, 0, {ACT_CONNTIMEOUT}}, + + /* misc. */ + {EV_PROTO_L2, -1, -1, -1, -1,-1, {ACT_PROTO_L2}}, //FIXME + + {RSP_ZCON, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZCCR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZAOC, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + {RSP_ZCSTR, -1, -1, -1, -1,-1, {ACT_DEBUG}}, //FIXME + + {RSP_ZCAU, -1, -1, -1, -1,-1, {ACT_ZCAU}}, + {RSP_NONE, -1, -1, -1, -1,-1, {ACT_DEBUG}}, + {RSP_ANY, -1, -1, -1, -1,-1, {ACT_WARN}}, + {RSP_LAST} +}; + + +#if 0 +static struct reply_t tab_nocid[]= /* no dle mode */ //FIXME aenderungen uebernehmen +{ + /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */ + + {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL}, + {RSP_LAST,0,0,0,0,0,0} +}; + +static struct reply_t tab_cid[] = /* no dle mode */ //FIXME aenderungen uebernehmen +{ + /* resp_code, min_ConState, max_ConState, parameter, new_ConState, timeout, action, command */ + + {RSP_ANY, -1, -1, -1, -1,-1, ACT_WARN, NULL}, + {RSP_LAST,0,0,0,0,0,0} +}; +#endif + +static struct resp_type_t resp_type[]= +{ + /*{"", RSP_EMPTY, RT_NOTHING},*/ + {"OK", RSP_OK, RT_NOTHING}, + {"ERROR", RSP_ERROR, RT_NOTHING}, + {"ZSAU", RSP_ZSAU, RT_ZSAU}, + {"ZCAU", RSP_ZCAU, RT_ZCAU}, + {"RING", RSP_RING, RT_RING}, + {"ZGCI", RSP_ZGCI, RT_NUMBER}, + {"ZVLS", RSP_ZVLS, RT_NUMBER}, + {"ZCTP", RSP_ZCTP, RT_NUMBER}, + {"ZDLE", RSP_ZDLE, RT_NUMBER}, + {"ZCFGT", RSP_ZCFGT, RT_NUMBER}, + {"ZCCR", RSP_ZCCR, RT_NUMBER}, + {"ZMWI", RSP_ZMWI, RT_NUMBER}, + {"ZHLC", RSP_ZHLC, RT_STRING}, + {"ZBC", RSP_ZBC, RT_STRING}, + {"NMBR", RSP_NMBR, RT_STRING}, + {"ZCPN", RSP_ZCPN, RT_STRING}, + {"ZCON", RSP_ZCON, RT_STRING}, + {"ZAOC", RSP_ZAOC, RT_STRING}, + {"ZCSTR", RSP_ZCSTR, RT_STRING}, + {"ZCFG", RSP_ZCFG, RT_HEX}, + {"ZLOG", RSP_ZLOG, RT_NOTHING}, + {"ZABINFO", RSP_ZABINFO, RT_NOTHING}, + {"ZSMLSTCHG", RSP_ZSMLSTCHG, RT_NOTHING}, + {NULL,0,0} +}; + +/* + * Get integer from char-pointer + */ +static int isdn_getnum(char *p) +{ + int v = -1; + + IFNULLRETVAL(p, -1); + + dbg(DEBUG_TRANSCMD, "string: %s", p); + + while (*p >= '0' && *p <= '9') + v = ((v < 0) ? 0 : (v * 10)) + (int) ((*p++) - '0'); + if (*p) + v = -1; /* invalid Character */ + return v; +} + +/* + * Get integer from char-pointer + */ +static int isdn_gethex(char *p) +{ + int v = 0; + int c; + + IFNULLRETVAL(p, -1); + + dbg(DEBUG_TRANSCMD, "string: %s", p); + + if (!*p) + return -1; + + do { + if (v > (INT_MAX - 15) / 16) + return -1; + c = *p; + if (c >= '0' && c <= '9') + c -= '0'; + else if (c >= 'a' && c <= 'f') + c -= 'a' - 10; + else if (c >= 'A' && c <= 'F') + c -= 'A' - 10; + else + return -1; + v = v * 16 + c; + } while (*++p); + + return v; +} + +static inline void new_index(atomic_t *index, int max) +{ + if (atomic_read(index) == max) //FIXME race? + atomic_set(index, 0); + else + atomic_inc(index); +} + +/* retrieve CID from parsed response + * returns 0 if no CID, -1 if invalid CID, or CID value 1..65535 + */ +static int cid_of_response(char *s) +{ + int cid; + + if (s[-1] != ';') + return 0; /* no CID separator */ + cid = isdn_getnum(s); + if (cid < 0) + return 0; /* CID not numeric */ + if (cid < 1 || cid > 65535) + return -1; /* CID out of range */ + return cid; + //FIXME is ;<digit>+ at end of non-CID response really impossible? +} + +/* This function will be called via task queue from the callback handler. + * We received a modem response and have to handle it.. + */ +void gigaset_handle_modem_response(struct cardstate *cs) +{ + unsigned char *argv[MAX_REC_PARAMS + 1]; + int params; + int i, j; + struct resp_type_t *rt; + int curarg; + unsigned long flags; + unsigned next, tail, head; + struct event_t *event; + int resp_code; + int param_type; + int abort; + size_t len; + int cid; + int rawstring; + + IFNULLRET(cs); + + len = cs->cbytes; + if (!len) { + /* ignore additional LFs/CRs (M10x config mode or cx100) */ + dbg(DEBUG_MCMD, "skipped EOL [%02X]", cs->respdata[len]); + return; + } + cs->respdata[len] = 0; + dbg(DEBUG_TRANSCMD, "raw string: '%s'", cs->respdata); + argv[0] = cs->respdata; + params = 1; + if (cs->at_state.getstring) { + /* getstring only allowed without cid at the moment */ + cs->at_state.getstring = 0; + rawstring = 1; + cid = 0; + } else { + /* parse line */ + for (i = 0; i < len; i++) + switch (cs->respdata[i]) { + case ';': + case ',': + case '=': + if (params > MAX_REC_PARAMS) { + warn("too many parameters in response"); + /* need last parameter (might be CID) */ + params--; + } + argv[params++] = cs->respdata + i + 1; + } + + rawstring = 0; + cid = params > 1 ? cid_of_response(argv[params-1]) : 0; + if (cid < 0) { + gigaset_add_event(cs, &cs->at_state, RSP_INVAL, + NULL, 0, NULL); + return; + } + + for (j = 1; j < params; ++j) + argv[j][-1] = 0; + + dbg(DEBUG_TRANSCMD, "CMD received: %s", argv[0]); + if (cid) { + --params; + dbg(DEBUG_TRANSCMD, "CID: %s", argv[params]); + } + dbg(DEBUG_TRANSCMD, "available params: %d", params - 1); + for (j = 1; j < params; j++) + dbg(DEBUG_TRANSCMD, "param %d: %s", j, argv[j]); + } + + spin_lock_irqsave(&cs->ev_lock, flags); + head = atomic_read(&cs->ev_head); + tail = atomic_read(&cs->ev_tail); + + abort = 1; + curarg = 0; + while (curarg < params) { + next = (tail + 1) % MAX_EVENTS; + if (unlikely(next == head)) { + err("event queue full"); + break; + } + + event = cs->events + tail; + event->at_state = NULL; + event->cid = cid; + event->ptr = NULL; + event->arg = NULL; + tail = next; + + if (rawstring) { + resp_code = RSP_STRING; + param_type = RT_STRING; + } else { + for (rt = resp_type; rt->response; ++rt) + if (!strcmp(argv[curarg], rt->response)) + break; + + if (!rt->response) { + event->type = RSP_UNKNOWN; + warn("unknown modem response: %s", + argv[curarg]); + break; + } + + resp_code = rt->resp_code; + param_type = rt->type; + ++curarg; + } + + event->type = resp_code; + + switch (param_type) { + case RT_NOTHING: + break; + case RT_RING: + if (!cid) { + err("received RING without CID!"); + event->type = RSP_INVAL; + abort = 1; + } else { + event->cid = 0; + event->parameter = cid; + abort = 0; + } + break; + case RT_ZSAU: + if (curarg >= params) { + event->parameter = ZSAU_NONE; + break; + } + if (!strcmp(argv[curarg], "OUTGOING_CALL_PROCEEDING")) + event->parameter = ZSAU_OUTGOING_CALL_PROCEEDING; + else if (!strcmp(argv[curarg], "CALL_DELIVERED")) + event->parameter = ZSAU_CALL_DELIVERED; + else if (!strcmp(argv[curarg], "ACTIVE")) + event->parameter = ZSAU_ACTIVE; + else if (!strcmp(argv[curarg], "DISCONNECT_IND")) + event->parameter = ZSAU_DISCONNECT_IND; + else if (!strcmp(argv[curarg], "NULL")) + event->parameter = ZSAU_NULL; + else if (!strcmp(argv[curarg], "DISCONNECT_REQ")) + event->parameter = ZSAU_DISCONNECT_REQ; + else { + event->parameter = ZSAU_UNKNOWN; + warn("%s: unknown parameter %s after ZSAU", + __func__, argv[curarg]); + } + ++curarg; + break; + case RT_STRING: + if (curarg < params) { + len = strlen(argv[curarg]) + 1; + event->ptr = kmalloc(len, GFP_ATOMIC); + if (event->ptr) + memcpy(event->ptr, argv[curarg], len); + else + err("no memory for string!"); + ++curarg; + } +#ifdef CONFIG_GIGASET_DEBUG + if (!event->ptr) + dbg(DEBUG_CMD, "string==NULL"); + else + dbg(DEBUG_CMD, + "string==%s", (char *) event->ptr); +#endif + break; + case RT_ZCAU: + event->parameter = -1; + if (curarg + 1 < params) { + i = isdn_gethex(argv[curarg]); + j = isdn_gethex(argv[curarg + 1]); + if (i >= 0 && i < 256 && j >= 0 && j < 256) + event->parameter = (unsigned) i << 8 + | j; + curarg += 2; + } else + curarg = params - 1; + break; + case RT_NUMBER: + case RT_HEX: + if (curarg < params) { + if (param_type == RT_HEX) + event->parameter = + isdn_gethex(argv[curarg]); + else + event->parameter = + isdn_getnum(argv[curarg]); + ++curarg; + } else + event->parameter = -1; +#ifdef CONFIG_GIGASET_DEBUG + dbg(DEBUG_CMD, "parameter==%d", event->parameter); +#endif + break; + } + + if (resp_code == RSP_ZDLE) + cs->dle = event->parameter; + + if (abort) + break; + } + + atomic_set(&cs->ev_tail, tail); + spin_unlock_irqrestore(&cs->ev_lock, flags); + + if (curarg != params) + dbg(DEBUG_ANY, "invalid number of processed parameters: %d/%d", + curarg, params); +} +EXPORT_SYMBOL_GPL(gigaset_handle_modem_response); + +/* disconnect + * process closing of connection associated with given AT state structure + */ +static void disconnect(struct at_state_t **at_state_p) +{ + unsigned long flags; + struct bc_state *bcs; + struct cardstate *cs; + + IFNULLRET(at_state_p); + IFNULLRET(*at_state_p); + bcs = (*at_state_p)->bcs; + cs = (*at_state_p)->cs; + IFNULLRET(cs); + + new_index(&(*at_state_p)->seq_index, MAX_SEQ_INDEX); + + /* revert to selected idle mode */ + if (!atomic_read(&cs->cidmode)) { + cs->at_state.pending_commands |= PC_UMMODE; + atomic_set(&cs->commands_pending, 1); //FIXME + dbg(DEBUG_CMD, "Scheduling PC_UMMODE"); + } + + if (bcs) { + /* B channel assigned: invoke hardware specific handler */ + cs->ops->close_bchannel(bcs); + } else { + /* no B channel assigned: just deallocate */ + spin_lock_irqsave(&cs->lock, flags); + list_del(&(*at_state_p)->list); + kfree(*at_state_p); + *at_state_p = NULL; + spin_unlock_irqrestore(&cs->lock, flags); + } +} + +/* get_free_channel + * get a free AT state structure: either one of those associated with the + * B channels of the Gigaset device, or if none of those is available, + * a newly allocated one with bcs=NULL + * The structure should be freed by calling disconnect() after use. + */ +static inline struct at_state_t *get_free_channel(struct cardstate *cs, + int cid) +/* cids: >0: siemens-cid + 0: without cid + -1: no cid assigned yet +*/ +{ + unsigned long flags; + int i; + struct at_state_t *ret; + + for (i = 0; i < cs->channels; ++i) + if (gigaset_get_channel(cs->bcs + i)) { + ret = &cs->bcs[i].at_state; + ret->cid = cid; + return ret; + } + + spin_lock_irqsave(&cs->lock, flags); + ret = kmalloc(sizeof(struct at_state_t), GFP_ATOMIC); + if (ret) { + gigaset_at_init(ret, NULL, cs, cid); + list_add(&ret->list, &cs->temp_at_states); + } + spin_unlock_irqrestore(&cs->lock, flags); + return ret; +} + +static void init_failed(struct cardstate *cs, int mode) +{ + int i; + struct at_state_t *at_state; + + cs->at_state.pending_commands &= ~PC_INIT; + atomic_set(&cs->mode, mode); + atomic_set(&cs->mstate, MS_UNINITIALIZED); + gigaset_free_channels(cs); + for (i = 0; i < cs->channels; ++i) { + at_state = &cs->bcs[i].at_state; + if (at_state->pending_commands & PC_CID) { + at_state->pending_commands &= ~PC_CID; + at_state->pending_commands |= PC_NOCID; + atomic_set(&cs->commands_pending, 1); + } + } +} + +static void schedule_init(struct cardstate *cs, int state) +{ + if (cs->at_state.pending_commands & PC_INIT) { + dbg(DEBUG_CMD, "not scheduling PC_INIT again"); + return; + } + atomic_set(&cs->mstate, state); + atomic_set(&cs->mode, M_UNKNOWN); + gigaset_block_channels(cs); + cs->at_state.pending_commands |= PC_INIT; + atomic_set(&cs->commands_pending, 1); + dbg(DEBUG_CMD, "Scheduling PC_INIT"); +} + +/* Add "AT" to a command, add the cid, dle encode it, send the result to the hardware. */ +static void send_command(struct cardstate *cs, const char *cmd, int cid, + int dle, gfp_t kmallocflags) +{ + size_t cmdlen, buflen; + char *cmdpos, *cmdbuf, *cmdtail; + + cmdlen = strlen(cmd); + buflen = 11 + cmdlen; + + if (likely(buflen > cmdlen)) { + cmdbuf = kmalloc(buflen, kmallocflags); + if (likely(cmdbuf != NULL)) { + cmdpos = cmdbuf + 9; + cmdtail = cmdpos + cmdlen; + memcpy(cmdpos, cmd, cmdlen); + + if (cid > 0 && cid <= 65535) { + do { + *--cmdpos = '0' + cid % 10; + cid /= 10; + ++cmdlen; + } while (cid); + } + + cmdlen += 2; + *--cmdpos = 'T'; + *--cmdpos = 'A'; + + if (dle) { + cmdlen += 4; + *--cmdpos = '('; + *--cmdpos = 0x10; + *cmdtail++ = 0x10; + *cmdtail++ = ')'; + } + + cs->ops->write_cmd(cs, cmdpos, cmdlen, NULL); + kfree(cmdbuf); + } else + err("no memory for command buffer"); + } else + err("overflow in buflen"); +} + +static struct at_state_t *at_state_from_cid(struct cardstate *cs, int cid) +{ + struct at_state_t *at_state; + int i; + unsigned long flags; + + if (cid == 0) + return &cs->at_state; + + for (i = 0; i < cs->channels; ++i) + if (cid == cs->bcs[i].at_state.cid) + return &cs->bcs[i].at_state; + + spin_lock_irqsave(&cs->lock, flags); + + list_for_each_entry(at_state, &cs->temp_at_states, list) + if (cid == at_state->cid) { + spin_unlock_irqrestore(&cs->lock, flags); + return at_state; + } + + spin_unlock_irqrestore(&cs->lock, flags); + + return NULL; +} + +static void bchannel_down(struct bc_state *bcs) +{ + IFNULLRET(bcs); + IFNULLRET(bcs->cs); + + if (bcs->chstate & CHS_B_UP) { + bcs->chstate &= ~CHS_B_UP; + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP); + } + + if (bcs->chstate & (CHS_D_UP | CHS_NOTIFY_LL)) { + bcs->chstate &= ~(CHS_D_UP | CHS_NOTIFY_LL); + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP); + } + + gigaset_free_channel(bcs); + + gigaset_bcs_reinit(bcs); +} + +static void bchannel_up(struct bc_state *bcs) +{ + IFNULLRET(bcs); + + if (!(bcs->chstate & CHS_D_UP)) { + notice("%s: D channel not up", __func__); + bcs->chstate |= CHS_D_UP; + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN); + } + + if (bcs->chstate & CHS_B_UP) { + notice("%s: B channel already up", __func__); + return; + } + + bcs->chstate |= CHS_B_UP; + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN); +} + +static void start_dial(struct at_state_t *at_state, void *data, int seq_index) +{ + struct bc_state *bcs = at_state->bcs; + struct cardstate *cs = at_state->cs; + int retval; + + bcs->chstate |= CHS_NOTIFY_LL; + //atomic_set(&bcs->status, BCS_INIT); + + if (atomic_read(&at_state->seq_index) != seq_index) + goto error; + + retval = gigaset_isdn_setup_dial(at_state, data); + if (retval != 0) + goto error; + + + at_state->pending_commands |= PC_CID; + dbg(DEBUG_CMD, "Scheduling PC_CID"); +//#ifdef GIG_MAYINITONDIAL +// if (atomic_read(&cs->MState) == MS_UNKNOWN) { +// cs->at_state.pending_commands |= PC_INIT; +// dbg(DEBUG_CMD, "Scheduling PC_INIT"); +// } +//#endif + atomic_set(&cs->commands_pending, 1); //FIXME + return; + +error: + at_state->pending_commands |= PC_NOCID; + dbg(DEBUG_CMD, "Scheduling PC_NOCID"); + atomic_set(&cs->commands_pending, 1); //FIXME + return; +} + +static void start_accept(struct at_state_t *at_state) +{ + struct cardstate *cs = at_state->cs; + int retval; + + retval = gigaset_isdn_setup_accept(at_state); + + if (retval == 0) { + at_state->pending_commands |= PC_ACCEPT; + dbg(DEBUG_CMD, "Scheduling PC_ACCEPT"); + atomic_set(&cs->commands_pending, 1); //FIXME + } else { + //FIXME + at_state->pending_commands |= PC_HUP; + dbg(DEBUG_CMD, "Scheduling PC_HUP"); + atomic_set(&cs->commands_pending, 1); //FIXME + } +} + +static void do_start(struct cardstate *cs) +{ + gigaset_free_channels(cs); + + if (atomic_read(&cs->mstate) != MS_LOCKED) + schedule_init(cs, MS_INIT); + + gigaset_i4l_cmd(cs, ISDN_STAT_RUN); + // FIXME: not in locked mode + // FIXME 2: only after init sequence + + cs->waiting = 0; + wake_up(&cs->waitqueue); +} + +static void finish_shutdown(struct cardstate *cs) +{ + if (atomic_read(&cs->mstate) != MS_LOCKED) { + atomic_set(&cs->mstate, MS_UNINITIALIZED); + atomic_set(&cs->mode, M_UNKNOWN); + } + + /* The rest is done by cleanup_cs () in user mode. */ + + cs->cmd_result = -ENODEV; + cs->waiting = 0; + wake_up_interruptible(&cs->waitqueue); +} + +static void do_shutdown(struct cardstate *cs) +{ + gigaset_block_channels(cs); + + if (atomic_read(&cs->mstate) == MS_READY) { + atomic_set(&cs->mstate, MS_SHUTDOWN); + cs->at_state.pending_commands |= PC_SHUTDOWN; + atomic_set(&cs->commands_pending, 1); //FIXME + dbg(DEBUG_CMD, "Scheduling PC_SHUTDOWN"); //FIXME + //gigaset_schedule_event(cs); //FIXME + } else + finish_shutdown(cs); +} + +static void do_stop(struct cardstate *cs) +{ + do_shutdown(cs); +} + +/* Entering cid mode or getting a cid failed: + * try to initialize the device and try again. + * + * channel >= 0: getting cid for the channel failed + * channel < 0: entering cid mode failed + * + * returns 0 on failure + */ +static int reinit_and_retry(struct cardstate *cs, int channel) +{ + int i; + + if (--cs->retry_count <= 0) + return 0; + + for (i = 0; i < cs->channels; ++i) + if (cs->bcs[i].at_state.cid > 0) + return 0; + + if (channel < 0) + warn("Could not enter cid mode. Reinit device and try again."); + else { + warn("Could not get a call id. Reinit device and try again."); + cs->bcs[channel].at_state.pending_commands |= PC_CID; + } + schedule_init(cs, MS_INIT); + return 1; +} + +static int at_state_invalid(struct cardstate *cs, + struct at_state_t *test_ptr) +{ + unsigned long flags; + unsigned channel; + struct at_state_t *at_state; + int retval = 0; + + spin_lock_irqsave(&cs->lock, flags); + + if (test_ptr == &cs->at_state) + goto exit; + + list_for_each_entry(at_state, &cs->temp_at_states, list) + if (at_state == test_ptr) + goto exit; + + for (channel = 0; channel < cs->channels; ++channel) + if (&cs->bcs[channel].at_state == test_ptr) + goto exit; + + retval = 1; +exit: + spin_unlock_irqrestore(&cs->lock, flags); + return retval; +} + +static void handle_icall(struct cardstate *cs, struct bc_state *bcs, + struct at_state_t **p_at_state) +{ + int retval; + struct at_state_t *at_state = *p_at_state; + + retval = gigaset_isdn_icall(at_state); + switch (retval) { + case ICALL_ACCEPT: + break; + default: + err("internal error: disposition=%d", retval); + /* --v-- fall through --v-- */ + case ICALL_IGNORE: + case ICALL_REJECT: + /* hang up actively + * Device doc says that would reject the call. + * In fact it doesn't. + */ + at_state->pending_commands |= PC_HUP; + atomic_set(&cs->commands_pending, 1); + break; + } +} + +static int do_lock(struct cardstate *cs) +{ + int mode; + int i; + + switch (atomic_read(&cs->mstate)) { + case MS_UNINITIALIZED: + case MS_READY: + if (cs->cur_at_seq || !list_empty(&cs->temp_at_states) || + cs->at_state.pending_commands) + return -EBUSY; + + for (i = 0; i < cs->channels; ++i) + if (cs->bcs[i].at_state.pending_commands) + return -EBUSY; + + if (!gigaset_get_channels(cs)) + return -EBUSY; + + break; + case MS_LOCKED: + //retval = -EACCES; + break; + default: + return -EBUSY; + } + + mode = atomic_read(&cs->mode); + atomic_set(&cs->mstate, MS_LOCKED); + atomic_set(&cs->mode, M_UNKNOWN); + //FIXME reset card state / at states / bcs states + + return mode; +} + +static int do_unlock(struct cardstate *cs) +{ + if (atomic_read(&cs->mstate) != MS_LOCKED) + return -EINVAL; + + atomic_set(&cs->mstate, MS_UNINITIALIZED); + atomic_set(&cs->mode, M_UNKNOWN); + gigaset_free_channels(cs); + //FIXME reset card state / at states / bcs states + if (atomic_read(&cs->connected)) + schedule_init(cs, MS_INIT); + + return 0; +} + +static void do_action(int action, struct cardstate *cs, + struct bc_state *bcs, + struct at_state_t **p_at_state, char **pp_command, + int *p_genresp, int *p_resp_code, + struct event_t *ev) +{ + struct at_state_t *at_state = *p_at_state; + struct at_state_t *at_state2; + unsigned long flags; + + int channel; + + unsigned char *s, *e; + int i; + unsigned long val; + + switch (action) { + case ACT_NOTHING: + break; + case ACT_TIMEOUT: + at_state->waiting = 1; + break; + case ACT_INIT: + //FIXME setup everything + cs->at_state.pending_commands &= ~PC_INIT; + cs->cur_at_seq = SEQ_NONE; + atomic_set(&cs->mode, M_UNIMODEM); + if (!atomic_read(&cs->cidmode)) { + gigaset_free_channels(cs); + atomic_set(&cs->mstate, MS_READY); + break; + } + cs->at_state.pending_commands |= PC_CIDMODE; + atomic_set(&cs->commands_pending, 1); //FIXME + dbg(DEBUG_CMD, "Scheduling PC_CIDMODE"); + break; + case ACT_FAILINIT: + warn("Could not initialize the device."); + cs->dle = 0; + init_failed(cs, M_UNKNOWN); + cs->cur_at_seq = SEQ_NONE; + break; + case ACT_CONFIGMODE: + init_failed(cs, M_CONFIG); + cs->cur_at_seq = SEQ_NONE; + break; + case ACT_SETDLE1: + cs->dle = 1; + /* cs->inbuf[0].inputstate |= INS_command | INS_DLE_command; */ + cs->inbuf[0].inputstate &= + ~(INS_command | INS_DLE_command); + break; + case ACT_SETDLE0: + cs->dle = 0; + cs->inbuf[0].inputstate = + (cs->inbuf[0].inputstate & ~INS_DLE_command) + | INS_command; + break; + case ACT_CMODESET: + if (atomic_read(&cs->mstate) == MS_INIT || + atomic_read(&cs->mstate) == MS_RECOVER) { + gigaset_free_channels(cs); + atomic_set(&cs->mstate, MS_READY); + } + atomic_set(&cs->mode, M_CID); + cs->cur_at_seq = SEQ_NONE; + break; + case ACT_UMODESET: + atomic_set(&cs->mode, M_UNIMODEM); + cs->cur_at_seq = SEQ_NONE; + break; + case ACT_FAILCMODE: + cs->cur_at_seq = SEQ_NONE; + if (atomic_read(&cs->mstate) == MS_INIT || + atomic_read(&cs->mstate) == MS_RECOVER) { + init_failed(cs, M_UNKNOWN); + break; + } + if (!reinit_and_retry(cs, -1)) + schedule_init(cs, MS_RECOVER); + break; + case ACT_FAILUMODE: + cs->cur_at_seq = SEQ_NONE; + schedule_init(cs, MS_RECOVER); + break; + case ACT_HUPMODEM: + /* send "+++" (hangup in unimodem mode) */ + cs->ops->write_cmd(cs, "+++", 3, NULL); + break; + case ACT_RING: + /* get fresh AT state structure for new CID */ + at_state2 = get_free_channel(cs, ev->parameter); + if (!at_state2) { + warn("RING ignored: " + "could not allocate channel structure"); + break; + } + + /* initialize AT state structure + * note that bcs may be NULL if no B channel is free + */ + at_state2->ConState = 700; + kfree(at_state2->str_var[STR_NMBR]); + at_state2->str_var[STR_NMBR] = NULL; + kfree(at_state2->str_var[STR_ZCPN]); + at_state2->str_var[STR_ZCPN] = NULL; + kfree(at_state2->str_var[STR_ZBC]); + at_state2->str_var[STR_ZBC] = NULL; + kfree(at_state2->str_var[STR_ZHLC]); + at_state2->str_var[STR_ZHLC] = NULL; + at_state2->int_var[VAR_ZCTP] = -1; + + spin_lock_irqsave(&cs->lock, flags); + at_state2->timer_expires = RING_TIMEOUT; + at_state2->timer_active = 1; + spin_unlock_irqrestore(&cs->lock, flags); + break; + case ACT_ICALL: + handle_icall(cs, bcs, p_at_state); + at_state = *p_at_state; + break; + case ACT_FAILSDOWN: + warn("Could not shut down the device."); + /* fall through */ + case ACT_FAKESDOWN: + case ACT_SDOWN: + cs->cur_at_seq = SEQ_NONE; + finish_shutdown(cs); + break; + case ACT_CONNECT: + if (cs->onechannel) { + at_state->pending_commands |= PC_DLE1; + atomic_set(&cs->commands_pending, 1); + break; + } + bcs->chstate |= CHS_D_UP; + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN); + cs->ops->init_bchannel(bcs); + break; + case ACT_DLE1: + cs->cur_at_seq = SEQ_NONE; + bcs = cs->bcs + cs->curchannel; + + bcs->chstate |= CHS_D_UP; + gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN); + cs->ops->init_bchannel(bcs); + break; + case ACT_FAKEHUP: + at_state->int_var[VAR_ZSAU] = ZSAU_NULL; + /* fall through */ + case ACT_DISCONNECT: + cs->cur_at_seq = SEQ_NONE; + at_state->cid = -1; + if (bcs && cs->onechannel && cs->dle) { + /* Check for other open channels not needed: + * DLE only used for M10x with one B channel. + */ + at_state->pending_commands |= PC_DLE0; + atomic_set(&cs->commands_pending, 1); + } else { + disconnect(p_at_state); + at_state = *p_at_state; + } + break; + case ACT_FAKEDLE0: + at_state->int_var[VAR_ZDLE] = 0; + cs->dle = 0; + /* fall through */ + case ACT_DLE0: + cs->cur_at_seq = SEQ_NONE; + at_state2 = &cs->bcs[cs->curchannel].at_state; + disconnect(&at_state2); + break; + case ACT_ABORTHUP: + cs->cur_at_seq = SEQ_NONE; + warn("Could not hang up."); + at_state->cid = -1; + if (bcs && cs->onechannel) + at_state->pending_commands |= PC_DLE0; + else { + disconnect(p_at_state); + at_state = *p_at_state; + } + schedule_init(cs, MS_RECOVER); + break; + case ACT_FAILDLE0: + cs->cur_at_seq = SEQ_NONE; + warn("Could not leave DLE mode."); + at_state2 = &cs->bcs[cs->curchannel].at_state; + disconnect(&at_state2); + schedule_init(cs, MS_RECOVER); + break; + case ACT_FAILDLE1: + cs->cur_at_seq = SEQ_NONE; + warn("Could not enter DLE mode. Try to hang up."); + channel = cs->curchannel; + cs->bcs[channel].at_state.pending_commands |= PC_HUP; + atomic_set(&cs->commands_pending, 1); + break; + + case ACT_CID: /* got cid; start dialing */ + cs->cur_at_seq = SEQ_NONE; + channel = cs->curchannel; + if (ev->parameter > 0 && ev->parameter <= 65535) { + cs->bcs[channel].at_state.cid = ev->parameter; + cs->bcs[channel].at_state.pending_commands |= + PC_DIAL; + atomic_set(&cs->commands_pending, 1); + break; + } + /* fall through */ + case ACT_FAILCID: + cs->cur_at_seq = SEQ_NONE; + channel = cs->curchannel; + if (!reinit_and_retry(cs, channel)) { + warn("Could not get a call id. Dialing not possible"); + at_state2 = &cs->bcs[channel].at_state; + disconnect(&at_state2); + } + break; + case ACT_ABORTCID: + cs->cur_at_seq = SEQ_NONE; + at_state2 = &cs->bcs[cs->curchannel].at_state; + disconnect(&at_state2); + break; + + case ACT_DIALING: + case ACT_ACCEPTED: + cs->cur_at_seq = SEQ_NONE; + break; + + case ACT_ABORTACCEPT: /* hangup/error/timeout during ICALL processing */ + disconnect(p_at_state); + at_state = *p_at_state; + break; + + case ACT_ABORTDIAL: /* error/timeout during dial preparation */ + cs->cur_at_seq = SEQ_NONE; + at_state->pending_commands |= PC_HUP; + atomic_set(&cs->commands_pending, 1); + break; + + case ACT_REMOTEREJECT: /* DISCONNECT_IND after dialling */ + case ACT_CONNTIMEOUT: /* timeout waiting for ZSAU=ACTIVE */ + case ACT_REMOTEHUP: /* DISCONNECT_IND with established connection */ + at_state->pending_commands |= PC_HUP; + atomic_set(&cs->commands_pending, 1); + break; + case ACT_GETSTRING: /* warning: RING, ZDLE, ... are not handled properly any more */ + at_state->getstring = 1; + break; + case ACT_SETVER: + if (!ev->ptr) { + *p_genresp = 1; + *p_resp_code = RSP_ERROR; + break; + } + s = ev->ptr; + + if (!strcmp(s, "OK")) { + *p_genresp = 1; + *p_resp_code = RSP_ERROR; + break; + } + + for (i = 0; i < 4; ++i) { + val = simple_strtoul(s, (char **) &e, 10); + if (val > INT_MAX || e == s) + break; + if (i == 3) { + if (*e) + break; + } else if (*e != '.') + break; + else + s = e + 1; + cs->fwver[i] = val; + } + if (i != 4) { + *p_genresp = 1; + *p_resp_code = RSP_ERROR; + break; + } + /*at_state->getstring = 1;*/ + cs->gotfwver = 0; + break; + case ACT_GOTVER: + if (cs->gotfwver == 0) { + cs->gotfwver = 1; + dbg(DEBUG_ANY, + "firmware version %02d.%03d.%02d.%02d", + cs->fwver[0], cs->fwver[1], + cs->fwver[2], cs->fwver[3]); + break; + } + /* fall through */ + case ACT_FAILVER: + cs->gotfwver = -1; + err("could not read firmware version."); + break; +#ifdef CONFIG_GIGASET_DEBUG + case ACT_ERROR: + *p_genresp = 1; + *p_resp_code = RSP_ERROR; + break; + case ACT_TEST: + { + static int count = 3; //2; //1; + *p_genresp = 1; + *p_resp_code = count ? RSP_ERROR : RSP_OK; + if (count > 0) + --count; + } + break; +#endif + case ACT_DEBUG: + dbg(DEBUG_ANY, "%s: resp_code %d in ConState %d", + __func__, ev->type, at_state->ConState); + break; + case ACT_WARN: + warn("%s: resp_code %d in ConState %d!", + __func__, ev->type, at_state->ConState); + break; + case ACT_ZCAU: + warn("cause code %04x in connection state %d.", + ev->parameter, at_state->ConState); + break; + + /* events from the LL */ + case ACT_DIAL: + start_dial(at_state, ev->ptr, ev->parameter); + break; + case ACT_ACCEPT: + start_accept(at_state); + break; + case ACT_PROTO_L2: + dbg(DEBUG_CMD, + "set protocol to %u", (unsigned) ev->parameter); + at_state->bcs->proto2 = ev->parameter; + break; + case ACT_HUP: + at_state->pending_commands |= PC_HUP; + atomic_set(&cs->commands_pending, 1); //FIXME + dbg(DEBUG_CMD, "Scheduling PC_HUP"); + break; + + /* hotplug events */ + case ACT_STOP: + do_stop(cs); + break; + case ACT_START: + do_start(cs); + break; + + /* events from the interface */ // FIXME without ACT_xxxx? + case ACT_IF_LOCK: + cs->cmd_result = ev->parameter ? do_lock(cs) : do_unlock(cs); + cs->waiting = 0; + wake_up(&cs->waitqueue); + break; + case ACT_IF_VER: + if (ev->parameter != 0) + cs->cmd_result = -EINVAL; + else if (cs->gotfwver != 1) { + cs->cmd_result = -ENOENT; + } else { + memcpy(ev->arg, cs->fwver, sizeof cs->fwver); + cs->cmd_result = 0; + } + cs->waiting = 0; + wake_up(&cs->waitqueue); + break; + + /* events from the proc file system */ // FIXME without ACT_xxxx? + case ACT_PROC_CIDMODE: + if (ev->parameter != atomic_read(&cs->cidmode)) { + atomic_set(&cs->cidmode, ev->parameter); + if (ev->parameter) { + cs->at_state.pending_commands |= PC_CIDMODE; + dbg(DEBUG_CMD, "Scheduling PC_CIDMODE"); + } else { + cs->at_state.pending_commands |= PC_UMMODE; + dbg(DEBUG_CMD, "Scheduling PC_UMMODE"); + } + atomic_set(&cs->commands_pending, 1); + } + cs->waiting = 0; + wake_up(&cs->waitqueue); + break; + + /* events from the hardware drivers */ + case ACT_NOTIFY_BC_DOWN: + bchannel_down(bcs); + break; + case ACT_NOTIFY_BC_UP: + bchannel_up(bcs); + break; + case ACT_SHUTDOWN: + do_shutdown(cs); + break; + + + default: + if (action >= ACT_CMD && action < ACT_CMD + AT_NUM) { + *pp_command = at_state->bcs->commands[action - ACT_CMD]; + if (!*pp_command) { + *p_genresp = 1; + *p_resp_code = RSP_NULL; + } + } else + err("%s: action==%d!", __func__, action); + } +} + +/* State machine to do the calling and hangup procedure */ +static void process_event(struct cardstate *cs, struct event_t *ev) +{ + struct bc_state *bcs; + char *p_command = NULL; + struct reply_t *rep; + int rcode; + int genresp = 0; + int resp_code = RSP_ERROR; + int sendcid; + struct at_state_t *at_state; + int index; + int curact; + unsigned long flags; + + IFNULLRET(cs); + IFNULLRET(ev); + + if (ev->cid >= 0) { + at_state = at_state_from_cid(cs, ev->cid); + if (!at_state) { + gigaset_add_event(cs, &cs->at_state, RSP_WRONG_CID, + NULL, 0, NULL); + return; + } + } else { + at_state = ev->at_state; + if (at_state_invalid(cs, at_state)) { + dbg(DEBUG_ANY, + "event for invalid at_state %p", at_state); + return; + } + } + + dbg(DEBUG_CMD, + "connection state %d, event %d", at_state->ConState, ev->type); + + bcs = at_state->bcs; + sendcid = at_state->cid; + + /* Setting the pointer to the dial array */ + rep = at_state->replystruct; + IFNULLRET(rep); + + if (ev->type == EV_TIMEOUT) { + if (ev->parameter != atomic_read(&at_state->timer_index) + || !at_state->timer_active) { + ev->type = RSP_NONE; /* old timeout */ + dbg(DEBUG_ANY, "old timeout"); + } else if (!at_state->waiting) + dbg(DEBUG_ANY, "timeout occured"); + else + dbg(DEBUG_ANY, "stopped waiting"); + } + + /* if the response belongs to a variable in at_state->int_var[VAR_XXXX] or at_state->str_var[STR_XXXX], set it */ + if (ev->type >= RSP_VAR && ev->type < RSP_VAR + VAR_NUM) { + index = ev->type - RSP_VAR; + at_state->int_var[index] = ev->parameter; + } else if (ev->type >= RSP_STR && ev->type < RSP_STR + STR_NUM) { + index = ev->type - RSP_STR; + kfree(at_state->str_var[index]); + at_state->str_var[index] = ev->ptr; + ev->ptr = NULL; /* prevent process_events() from deallocating ptr */ + } + + if (ev->type == EV_TIMEOUT || ev->type == RSP_STRING) + at_state->getstring = 0; + + /* Search row in dial array which matches modem response and current constate */ + for (;; rep++) { + rcode = rep->resp_code; + /* dbg (DEBUG_ANY, "rcode %d", rcode); */ + if (rcode == RSP_LAST) { + /* found nothing...*/ + warn("%s: rcode=RSP_LAST: resp_code %d in ConState %d!", + __func__, ev->type, at_state->ConState); + return; + } + if ((rcode == RSP_ANY || rcode == ev->type) + && ((int) at_state->ConState >= rep->min_ConState) + && (rep->max_ConState < 0 + || (int) at_state->ConState <= rep->max_ConState) + && (rep->parameter < 0 || rep->parameter == ev->parameter)) + break; + } + + p_command = rep->command; + + at_state->waiting = 0; + for (curact = 0; curact < MAXACT; ++curact) { + /* The row tells us what we should do .. + */ + do_action(rep->action[curact], cs, bcs, &at_state, &p_command, &genresp, &resp_code, ev); + if (!at_state) + break; /* may be freed after disconnect */ + } + + if (at_state) { + /* Jump to the next con-state regarding the array */ + if (rep->new_ConState >= 0) + at_state->ConState = rep->new_ConState; + + if (genresp) { + spin_lock_irqsave(&cs->lock, flags); + at_state->timer_expires = 0; //FIXME + at_state->timer_active = 0; //FIXME + spin_unlock_irqrestore(&cs->lock, flags); + gigaset_add_event(cs, at_state, resp_code, NULL, 0, NULL); + } else { + /* Send command to modem if not NULL... */ + if (p_command/*rep->command*/) { + if (atomic_read(&cs->connected)) + send_command(cs, p_command, + sendcid, cs->dle, + GFP_ATOMIC); + else + gigaset_add_event(cs, at_state, + RSP_NODEV, + NULL, 0, NULL); + } + + spin_lock_irqsave(&cs->lock, flags); + if (!rep->timeout) { + at_state->timer_expires = 0; + at_state->timer_active = 0; + } else if (rep->timeout > 0) { /* new timeout */ + at_state->timer_expires = rep->timeout * 10; + at_state->timer_active = 1; + new_index(&at_state->timer_index, + MAX_TIMER_INDEX); + } + spin_unlock_irqrestore(&cs->lock, flags); + } + } +} + +static void schedule_sequence(struct cardstate *cs, + struct at_state_t *at_state, int sequence) +{ + cs->cur_at_seq = sequence; + gigaset_add_event(cs, at_state, RSP_INIT, NULL, sequence, NULL); +} + +static void process_command_flags(struct cardstate *cs) +{ + struct at_state_t *at_state = NULL; + struct bc_state *bcs; + int i; + int sequence; + + IFNULLRET(cs); + + atomic_set(&cs->commands_pending, 0); + + if (cs->cur_at_seq) { + dbg(DEBUG_CMD, "not searching scheduled commands: busy"); + return; + } + + dbg(DEBUG_CMD, "searching scheduled commands"); + + sequence = SEQ_NONE; + + /* clear pending_commands and hangup channels on shutdown */ + if (cs->at_state.pending_commands & PC_SHUTDOWN) { + cs->at_state.pending_commands &= ~PC_CIDMODE; + for (i = 0; i < cs->channels; ++i) { + bcs = cs->bcs + i; + at_state = &bcs->at_state; + at_state->pending_commands &= + ~(PC_DLE1 | PC_ACCEPT | PC_DIAL); + if (at_state->cid > 0) + at_state->pending_commands |= PC_HUP; + if (at_state->pending_commands & PC_CID) { + at_state->pending_commands |= PC_NOCID; + at_state->pending_commands &= ~PC_CID; + } + } + } + + /* clear pending_commands and hangup channels on reset */ + if (cs->at_state.pending_commands & PC_INIT) { + cs->at_state.pending_commands &= ~PC_CIDMODE; + for (i = 0; i < cs->channels; ++i) { + bcs = cs->bcs + i; + at_state = &bcs->at_state; + at_state->pending_commands &= + ~(PC_DLE1 | PC_ACCEPT | PC_DIAL); + if (at_state->cid > 0) + at_state->pending_commands |= PC_HUP; + if (atomic_read(&cs->mstate) == MS_RECOVER) { + if (at_state->pending_commands & PC_CID) { + at_state->pending_commands |= PC_NOCID; + at_state->pending_commands &= ~PC_CID; + } + } + } + } + + /* only switch back to unimodem mode, if no commands are pending and no channels are up */ + if (cs->at_state.pending_commands == PC_UMMODE + && !atomic_read(&cs->cidmode) + && list_empty(&cs->temp_at_states) + && atomic_read(&cs->mode) == M_CID) { + sequence = SEQ_UMMODE; + at_state = &cs->at_state; + for (i = 0; i < cs->channels; ++i) { + bcs = cs->bcs + i; + if (bcs->at_state.pending_commands || + bcs->at_state.cid > 0) { + sequence = SEQ_NONE; + break; + } + } + } + cs->at_state.pending_commands &= ~PC_UMMODE; + if (sequence != SEQ_NONE) { + schedule_sequence(cs, at_state, sequence); + return; + } + + for (i = 0; i < cs->channels; ++i) { + bcs = cs->bcs + i; + if (bcs->at_state.pending_commands & PC_HUP) { + bcs->at_state.pending_commands &= ~PC_HUP; + if (bcs->at_state.pending_commands & PC_CID) { + /* not yet dialing: PC_NOCID is sufficient */ + bcs->at_state.pending_commands |= PC_NOCID; + bcs->at_state.pending_commands &= ~PC_CID; + } else { + schedule_sequence(cs, &bcs->at_state, SEQ_HUP); + return; + } + } + if (bcs->at_state.pending_commands & PC_NOCID) { + bcs->at_state.pending_commands &= ~PC_NOCID; + cs->curchannel = bcs->channel; + schedule_sequence(cs, &cs->at_state, SEQ_NOCID); + return; + } else if (bcs->at_state.pending_commands & PC_DLE0) { + bcs->at_state.pending_commands &= ~PC_DLE0; + cs->curchannel = bcs->channel; + schedule_sequence(cs, &cs->at_state, SEQ_DLE0); + return; + } + } + + list_for_each_entry(at_state, &cs->temp_at_states, list) + if (at_state->pending_commands & PC_HUP) { + at_state->pending_commands &= ~PC_HUP; + schedule_sequence(cs, at_state, SEQ_HUP); + return; + } + + if (cs->at_state.pending_commands & PC_INIT) { + cs->at_state.pending_commands &= ~PC_INIT; + cs->dle = 0; //FIXME + cs->inbuf->inputstate = INS_command; + //FIXME reset card state (or -> LOCK0)? + schedule_sequence(cs, &cs->at_state, SEQ_INIT); + return; + } + if (cs->at_state.pending_commands & PC_SHUTDOWN) { + cs->at_state.pending_commands &= ~PC_SHUTDOWN; + schedule_sequence(cs, &cs->at_state, SEQ_SHUTDOWN); + return; + } + if (cs->at_state.pending_commands & PC_CIDMODE) { + cs->at_state.pending_commands &= ~PC_CIDMODE; + if (atomic_read(&cs->mode) == M_UNIMODEM) { +#if 0 + cs->retry_count = 2; +#else + cs->retry_count = 1; +#endif + schedule_sequence(cs, &cs->at_state, SEQ_CIDMODE); + return; + } + } + + for (i = 0; i < cs->channels; ++i) { + bcs = cs->bcs + i; + if (bcs->at_state.pending_commands & PC_DLE1) { + bcs->at_state.pending_commands &= ~PC_DLE1; + cs->curchannel = bcs->channel; + schedule_sequence(cs, &cs->at_state, SEQ_DLE1); + return; + } + if (bcs->at_state.pending_commands & PC_ACCEPT) { + bcs->at_state.pending_commands &= ~PC_ACCEPT; + schedule_sequence(cs, &bcs->at_state, SEQ_ACCEPT); + return; + } + if (bcs->at_state.pending_commands & PC_DIAL) { + bcs->at_state.pending_commands &= ~PC_DIAL; + schedule_sequence(cs, &bcs->at_state, SEQ_DIAL); + return; + } + if (bcs->at_state.pending_commands & PC_CID) { + switch (atomic_read(&cs->mode)) { + case M_UNIMODEM: + cs->at_state.pending_commands |= PC_CIDMODE; + dbg(DEBUG_CMD, "Scheduling PC_CIDMODE"); + atomic_set(&cs->commands_pending, 1); + return; +#ifdef GIG_MAYINITONDIAL + case M_UNKNOWN: + schedule_init(cs, MS_INIT); + return; +#endif + } + bcs->at_state.pending_commands &= ~PC_CID; + cs->curchannel = bcs->channel; +#ifdef GIG_RETRYCID + cs->retry_count = 2; +#else + cs->retry_count = 1; +#endif + schedule_sequence(cs, &cs->at_state, SEQ_CID); + return; + } + } +} + +static void process_events(struct cardstate *cs) +{ + struct event_t *ev; + unsigned head, tail; + int i; + int check_flags = 0; + int was_busy; + + /* no locking needed (only one reader) */ + head = atomic_read(&cs->ev_head); + + for (i = 0; i < 2 * MAX_EVENTS; ++i) { + tail = atomic_read(&cs->ev_tail); + if (tail == head) { + if (!check_flags && !atomic_read(&cs->commands_pending)) + break; + check_flags = 0; + process_command_flags(cs); + tail = atomic_read(&cs->ev_tail); + if (tail == head) { + if (!atomic_read(&cs->commands_pending)) + break; + continue; + } + } + + ev = cs->events + head; + was_busy = cs->cur_at_seq != SEQ_NONE; + process_event(cs, ev); + kfree(ev->ptr); + ev->ptr = NULL; + if (was_busy && cs->cur_at_seq == SEQ_NONE) + check_flags = 1; + + head = (head + 1) % MAX_EVENTS; + atomic_set(&cs->ev_head, head); + } + + if (i == 2 * MAX_EVENTS) { + err("infinite loop in process_events; aborting."); + } +} + +/* tasklet scheduled on any event received from the Gigaset device + * parameter: + * data ISDN controller state structure + */ +void gigaset_handle_event(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + + IFNULLRET(cs); + IFNULLRET(cs->inbuf); + + /* handle incoming data on control/common channel */ + if (atomic_read(&cs->inbuf->head) != atomic_read(&cs->inbuf->tail)) { + dbg(DEBUG_INTR, "processing new data"); + cs->ops->handle_input(cs->inbuf); + } + + process_events(cs); +} diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h new file mode 100644 index 00000000000..729edcdb6da --- /dev/null +++ b/drivers/isdn/gigaset/gigaset.h @@ -0,0 +1,938 @@ +/* Siemens Gigaset 307x driver + * Common header file for all connection variants + * + * Written by Stefan Eilers <Eilers.Stefan@epost.de> + * and Hansjoerg Lipp <hjlipp@web.de> + * + * Version: $Id: gigaset.h,v 1.97.4.26 2006/02/04 18:28:16 hjlipp Exp $ + * =========================================================================== + */ + +#ifndef GIGASET_H +#define GIGASET_H + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm/atomic.h> +#include <linux/spinlock.h> +#include <linux/isdnif.h> +#include <linux/usb.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/ppp_defs.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/list.h> + +#define GIG_VERSION {0,5,0,0} +#define GIG_COMPAT {0,4,0,0} + +#define MAX_REC_PARAMS 10 /* Max. number of params in response string */ +#define MAX_RESP_SIZE 512 /* Max. size of a response string */ +#define HW_HDR_LEN 2 /* Header size used to store ack info */ + +#define MAX_EVENTS 64 /* size of event queue */ + +#define RBUFSIZE 8192 +#define SBUFSIZE 4096 /* sk_buff payload size */ + +#define MAX_BUF_SIZE (SBUFSIZE - 2) /* Max. size of a data packet from LL */ +#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */ + +/* compile time options */ +#define GIG_MAJOR 0 + +#define GIG_MAYINITONDIAL +#define GIG_RETRYCID +#define GIG_X75 + +#define MAX_TIMER_INDEX 1000 +#define MAX_SEQ_INDEX 1000 + +#define GIG_TICK (HZ / 10) + +/* timeout values (unit: 1 sec) */ +#define INIT_TIMEOUT 1 + +/* timeout values (unit: 0.1 sec) */ +#define RING_TIMEOUT 3 /* for additional parameters to RING */ +#define BAS_TIMEOUT 20 /* for response to Base USB ops */ +#define ATRDY_TIMEOUT 3 /* for HD_READY_SEND_ATDATA */ + +#define BAS_RETRY 3 /* max. retries for base USB ops */ + +#define MAXACT 3 + +#define IFNULL(a) if (unlikely(!(a))) +#define IFNULLRET(a) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); return; } +#define IFNULLRETVAL(a,b) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); return (b); } +#define IFNULLCONT(a) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); continue; } +#define IFNULLGOTO(a,b) if (unlikely(!(a))) {err("%s==NULL at %s:%d!", #a, __FILE__, __LINE__); goto b; } + +extern int gigaset_debuglevel; /* "needs" cast to (enum debuglevel) */ + +/* any combination of these can be given with the 'debug=' parameter to insmod, e.g. + * 'insmod usb_gigaset.o debug=0x2c' will set DEBUG_OPEN, DEBUG_CMD and DEBUG_INTR. */ +enum debuglevel { /* up to 24 bits (atomic_t) */ + DEBUG_REG = 0x0002, /* serial port I/O register operations */ + DEBUG_OPEN = 0x0004, /* open/close serial port */ + DEBUG_INTR = 0x0008, /* interrupt processing */ + DEBUG_INTR_DUMP = 0x0010, /* Activating hexdump debug output on interrupt + requests, not available as run-time option */ + DEBUG_CMD = 0x00020, /* sent/received LL commands */ + DEBUG_STREAM = 0x00040, /* application data stream I/O events */ + DEBUG_STREAM_DUMP = 0x00080, /* application data stream content */ + DEBUG_LLDATA = 0x00100, /* sent/received LL data */ + DEBUG_INTR_0 = 0x00200, /* serial port output interrupt processing */ + DEBUG_DRIVER = 0x00400, /* driver structure */ + DEBUG_HDLC = 0x00800, /* M10x HDLC processing */ + DEBUG_WRITE = 0x01000, /* M105 data write */ + DEBUG_TRANSCMD = 0x02000, /*AT-COMMANDS+RESPONSES*/ + DEBUG_MCMD = 0x04000, /*COMMANDS THAT ARE SENT VERY OFTEN*/ + DEBUG_INIT = 0x08000, /* (de)allocation+initialization of data structures */ + DEBUG_LOCK = 0x10000, /* semaphore operations */ + DEBUG_OUTPUT = 0x20000, /* output to device */ + DEBUG_ISO = 0x40000, /* isochronous transfers */ + DEBUG_IF = 0x80000, /* character device operations */ + DEBUG_USBREQ = 0x100000, /* USB communication (except payload data) */ + DEBUG_LOCKCMD = 0x200000, /* AT commands and responses when MS_LOCKED */ + + DEBUG_ANY = 0x3fffff, /* print message if any of the others is activated */ +}; + +#ifdef CONFIG_GIGASET_DEBUG +#define DEBUG_DEFAULT (DEBUG_INIT | DEBUG_TRANSCMD | DEBUG_CMD | DEBUG_USBREQ) +//#define DEBUG_DEFAULT (DEBUG_LOCK | DEBUG_INIT | DEBUG_TRANSCMD | DEBUG_CMD | DEBUF_IF | DEBUG_DRIVER | DEBUG_OUTPUT | DEBUG_INTR) +#else +#define DEBUG_DEFAULT 0 +#endif + +/* redefine syslog macros to prepend module name instead of entire source path */ +/* The space before the comma in ", ##" is needed by gcc 2.95 */ +#undef info +#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg) + +#undef notice +#define notice(format, arg...) printk(KERN_NOTICE "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg) + +#undef warn +#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg) + +#undef err +#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg) + +#undef dbg +#ifdef CONFIG_GIGASET_DEBUG +#define dbg(level, format, arg...) do { if (unlikely(((enum debuglevel)gigaset_debuglevel) & (level))) \ + printk(KERN_DEBUG "%s: " format "\n", THIS_MODULE ? THIS_MODULE->name : "gigaset_hw" , ## arg); } while (0) +#else +#define dbg(level, format, arg...) do {} while (0) +#endif + +void gigaset_dbg_buffer(enum debuglevel level, const unsigned char *msg, + size_t len, const unsigned char *buf, int from_user); + +/* connection state */ +#define ZSAU_NONE 0 +#define ZSAU_DISCONNECT_IND 4 +#define ZSAU_OUTGOING_CALL_PROCEEDING 1 +#define ZSAU_PROCEEDING 1 +#define ZSAU_CALL_DELIVERED 2 +#define ZSAU_ACTIVE 3 +#define ZSAU_NULL 5 +#define ZSAU_DISCONNECT_REQ 6 +#define ZSAU_UNKNOWN -1 + +/* USB control transfer requests */ +#define OUT_VENDOR_REQ (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT) +#define IN_VENDOR_REQ (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT) + +/* int-in-events 3070 */ +#define HD_B1_FLOW_CONTROL 0x80 +#define HD_B2_FLOW_CONTROL 0x81 +#define HD_RECEIVEATDATA_ACK (0x35) // 3070 // att: HD_RECEIVE>>AT<<DATA_ACK +#define HD_READY_SEND_ATDATA (0x36) // 3070 +#define HD_OPEN_ATCHANNEL_ACK (0x37) // 3070 +#define HD_CLOSE_ATCHANNEL_ACK (0x38) // 3070 +#define HD_DEVICE_INIT_OK (0x11) // ISurf USB + 3070 +#define HD_OPEN_B1CHANNEL_ACK (0x51) // ISurf USB + 3070 +#define HD_OPEN_B2CHANNEL_ACK (0x52) // ISurf USB + 3070 +#define HD_CLOSE_B1CHANNEL_ACK (0x53) // ISurf USB + 3070 +#define HD_CLOSE_B2CHANNEL_ACK (0x54) // ISurf USB + 3070 +// Powermangment +#define HD_SUSPEND_END (0x61) // ISurf USB +// Configuration +#define HD_RESET_INTERRUPT_PIPE_ACK (0xFF) // ISurf USB + 3070 + +/* control requests 3070 */ +#define HD_OPEN_B1CHANNEL (0x23) // ISurf USB + 3070 +#define HD_CLOSE_B1CHANNEL (0x24) // ISurf USB + 3070 +#define HD_OPEN_B2CHANNEL (0x25) // ISurf USB + 3070 +#define HD_CLOSE_B2CHANNEL (0x26) // ISurf USB + 3070 +#define HD_RESET_INTERRUPT_PIPE (0x27) // ISurf USB + 3070 +#define HD_DEVICE_INIT_ACK (0x34) // ISurf USB + 3070 +#define HD_WRITE_ATMESSAGE (0x12) // 3070 +#define HD_READ_ATMESSAGE (0x13) // 3070 +#define HD_OPEN_ATCHANNEL (0x28) // 3070 +#define HD_CLOSE_ATCHANNEL (0x29) // 3070 + +/* USB frames for isochronous transfer */ +#define BAS_FRAMETIME 1 /* number of milliseconds between frames */ +#define BAS_NUMFRAMES 8 /* number of frames per URB */ +#define BAS_MAXFRAME 16 /* allocated bytes per frame */ +#define BAS_NORMFRAME 8 /* send size without flow control */ +#define BAS_HIGHFRAME 10 /* " " with positive flow control */ +#define BAS_LOWFRAME 5 /* " " with negative flow control */ +#define BAS_CORRFRAMES 4 /* flow control multiplicator */ + +#define BAS_INBUFSIZE (BAS_MAXFRAME * BAS_NUMFRAMES) /* size of isochronous input buffer per URB */ +#define BAS_OUTBUFSIZE 4096 /* size of common isochronous output buffer */ +#define BAS_OUTBUFPAD BAS_MAXFRAME /* size of pad area for isochronous output buffer */ + +#define BAS_INURBS 3 +#define BAS_OUTURBS 3 + +/* variable commands in struct bc_state */ +#define AT_ISO 0 +#define AT_DIAL 1 +#define AT_MSN 2 +#define AT_BC 3 +#define AT_PROTO 4 +#define AT_TYPE 5 +#define AT_HLC 6 +#define AT_NUM 7 + +/* variables in struct at_state_t */ +#define VAR_ZSAU 0 +#define VAR_ZDLE 1 +#define VAR_ZVLS 2 +#define VAR_ZCTP 3 +#define VAR_NUM 4 + +#define STR_NMBR 0 +#define STR_ZCPN 1 +#define STR_ZCON 2 +#define STR_ZBC 3 +#define STR_ZHLC 4 +#define STR_NUM 5 + +#define EV_TIMEOUT -105 +#define EV_IF_VER -106 +#define EV_PROC_CIDMODE -107 +#define EV_SHUTDOWN -108 +#define EV_START -110 +#define EV_STOP -111 +#define EV_IF_LOCK -112 +#define EV_PROTO_L2 -113 +#define EV_ACCEPT -114 +#define EV_DIAL -115 +#define EV_HUP -116 +#define EV_BC_OPEN -117 +#define EV_BC_CLOSED -118 + +/* input state */ +#define INS_command 0x0001 +#define INS_DLE_char 0x0002 +#define INS_byte_stuff 0x0004 +#define INS_have_data 0x0008 +#define INS_skip_frame 0x0010 +#define INS_DLE_command 0x0020 +#define INS_flag_hunt 0x0040 + +/* channel state */ +#define CHS_D_UP 0x01 +#define CHS_B_UP 0x02 +#define CHS_NOTIFY_LL 0x04 + +#define ICALL_REJECT 0 +#define ICALL_ACCEPT 1 +#define ICALL_IGNORE 2 + +/* device state */ +#define MS_UNINITIALIZED 0 +#define MS_INIT 1 +#define MS_LOCKED 2 +#define MS_SHUTDOWN 3 +#define MS_RECOVER 4 +#define MS_READY 5 + +/* mode */ +#define M_UNKNOWN 0 +#define M_CONFIG 1 +#define M_UNIMODEM 2 +#define M_CID 3 + +/* start mode */ +#define SM_LOCKED 0 +#define SM_ISDN 1 /* default */ + +struct gigaset_ops; +struct gigaset_driver; + +struct usb_cardstate; +struct ser_cardstate; +struct bas_cardstate; + +struct bc_state; +struct usb_bc_state; +struct ser_bc_state; +struct bas_bc_state; + +struct reply_t { + int resp_code; /* RSP_XXXX */ + int min_ConState; /* <0 => ignore */ + int max_ConState; /* <0 => ignore */ + int parameter; /* e.g. ZSAU_XXXX <0: ignore*/ + int new_ConState; /* <0 => ignore */ + int timeout; /* >0 => *HZ; <=0 => TOUT_XXXX*/ + int action[MAXACT]; /* ACT_XXXX */ + char *command; /* NULL==none */ +}; + +extern struct reply_t gigaset_tab_cid_m10x[]; +extern struct reply_t gigaset_tab_nocid_m10x[]; + +struct inbuf_t { + unsigned char *rcvbuf; /* usb-gigaset receive buffer */ + struct bc_state *bcs; + struct cardstate *cs; + int inputstate; + + atomic_t head, tail; + unsigned char data[RBUFSIZE]; +}; + +/* isochronous write buffer structure + * circular buffer with pad area for extraction of complete USB frames + * - data[read..nextread-1] is valid data already submitted to the USB subsystem + * - data[nextread..write-1] is valid data yet to be sent + * - data[write] is the next byte to write to + * - in byte-oriented L2 procotols, it is completely free + * - in bit-oriented L2 procotols, it may contain a partial byte of valid data + * - data[write+1..read-1] is free + * - wbits is the number of valid data bits in data[write], starting at the LSB + * - writesem is the semaphore for writing to the buffer: + * if writesem <= 0, data[write..read-1] is currently being written to + * - idle contains the byte value to repeat when the end of valid data is + * reached; if nextread==write (buffer contains no data to send), either the + * BAS_OUTBUFPAD bytes immediately before data[write] (if write>=BAS_OUTBUFPAD) + * or those of the pad area (if write<BAS_OUTBUFPAD) are also filled with that + * value + * - optionally, the following statistics on the buffer's usage can be collected: + * maxfill: maximum number of bytes occupied + * idlefills: number of times a frame of idle bytes is prepared + * emptygets: number of times the buffer was empty when a data frame was requested + * backtoback: number of times two data packets were entered into the buffer + * without intervening idle flags + * nakedback: set if no idle flags have been inserted since the last data packet + */ +struct isowbuf_t { + atomic_t read; + atomic_t nextread; + atomic_t write; + atomic_t writesem; + int wbits; + unsigned char data[BAS_OUTBUFSIZE + BAS_OUTBUFPAD]; + unsigned char idle; +}; + +/* isochronous write URB context structure + * data to be stored along with the URB and retrieved when it is returned + * as completed by the USB subsystem + * - urb: pointer to the URB itself + * - bcs: pointer to the B Channel control structure + * - limit: end of write buffer area covered by this URB + */ +struct isow_urbctx_t { + struct urb *urb; + struct bc_state *bcs; + int limit; +}; + +/* AT state structure + * data associated with the state of an ISDN connection, whether or not + * it is currently assigned a B channel + */ +struct at_state_t { + struct list_head list; + int waiting; + int getstring; + atomic_t timer_index; + unsigned long timer_expires; + int timer_active; + unsigned int ConState; /* State of connection */ + struct reply_t *replystruct; + int cid; + int int_var[VAR_NUM]; /* see VAR_XXXX */ + char *str_var[STR_NUM]; /* see STR_XXXX */ + unsigned pending_commands; /* see PC_XXXX */ + atomic_t seq_index; + + struct cardstate *cs; + struct bc_state *bcs; +}; + +struct resp_type_t { + unsigned char *response; + int resp_code; /* RSP_XXXX */ + int type; /* RT_XXXX */ +}; + +struct prot_skb { + atomic_t empty; + struct semaphore *sem; + struct sk_buff *skb; +}; + +struct event_t { + int type; + void *ptr, *arg; + int parameter; + int cid; + struct at_state_t *at_state; +}; + +/* This buffer holds all information about the used B-Channel */ +struct bc_state { + struct sk_buff *tx_skb; /* Current transfer buffer to modem */ + struct sk_buff_head squeue; /* B-Channel send Queue */ + + /* Variables for debugging .. */ + int corrupted; /* Counter for corrupted packages */ + int trans_down; /* Counter of packages (downstream) */ + int trans_up; /* Counter of packages (upstream) */ + + struct at_state_t at_state; + unsigned long rcvbytes; + + __u16 fcs; + struct sk_buff *skb; + int inputstate; /* see INS_XXXX */ + + int channel; + + struct cardstate *cs; + + unsigned chstate; /* bitmap (CHS_*) */ + int ignore; + unsigned proto2; /* Layer 2 protocol (ISDN_PROTO_L2_*) */ + char *commands[AT_NUM]; /* see AT_XXXX */ + +#ifdef CONFIG_GIGASET_DEBUG + int emptycount; +#endif + int busy; + int use_count; + + /* hardware drivers */ + union { + struct ser_bc_state *ser; /* private data of serial hardware driver */ + struct usb_bc_state *usb; /* private data of usb hardware driver */ + struct bas_bc_state *bas; + } hw; +}; + +struct cardstate { + struct gigaset_driver *driver; + unsigned minor_index; + + const struct gigaset_ops *ops; + + /* Stuff to handle communication */ + //wait_queue_head_t initwait; + wait_queue_head_t waitqueue; + int waiting; + atomic_t mode; /* see M_XXXX */ + atomic_t mstate; /* Modem state: see MS_XXXX */ + /* only changed by the event layer */ + int cmd_result; + + int channels; + struct bc_state *bcs; /* Array of struct bc_state */ + + int onechannel; /* data and commands transmitted in one stream (M10x) */ + + spinlock_t lock; + struct at_state_t at_state; /* at_state_t for cid == 0 */ + struct list_head temp_at_states; /* list of temporary "struct at_state_t"s without B channel */ + + struct inbuf_t *inbuf; + + struct cmdbuf_t *cmdbuf, *lastcmdbuf; + spinlock_t cmdlock; + unsigned curlen, cmdbytes; + + unsigned open_count; + struct tty_struct *tty; + struct tasklet_struct if_wake_tasklet; + unsigned control_state; + + unsigned fwver[4]; + int gotfwver; + + atomic_t running; /* !=0 if events are handled */ + atomic_t connected; /* !=0 if hardware is connected */ + + atomic_t cidmode; + + int myid; /* id for communication with LL */ + isdn_if iif; + + struct reply_t *tabnocid; + struct reply_t *tabcid; + int cs_init; + int ignoreframes; /* frames to ignore after setting up the B channel */ + struct semaphore sem; /* locks this structure: */ + /* connected is not changed, */ + /* hardware_up is not changed, */ + /* MState is not changed to or from MS_LOCKED */ + + struct timer_list timer; + int retry_count; + int dle; /* !=0 if modem commands/responses are dle encoded */ + int cur_at_seq; /* sequence of AT commands being processed */ + int curchannel; /* channel, those commands are meant for */ + atomic_t commands_pending; /* flag(s) in xxx.commands_pending have been set */ + struct tasklet_struct event_tasklet; /* tasklet for serializing AT commands. Scheduled + * -> for modem reponses (and incomming data for M10x) + * -> on timeout + * -> after setting bits in xxx.at_state.pending_command + * (e.g. command from LL) */ + struct tasklet_struct write_tasklet; /* tasklet for serial output + * (not used in base driver) */ + + /* event queue */ + struct event_t events[MAX_EVENTS]; + atomic_t ev_tail, ev_head; + spinlock_t ev_lock; + + /* current modem response */ + unsigned char respdata[MAX_RESP_SIZE]; + unsigned cbytes; + + /* hardware drivers */ + union { + struct usb_cardstate *usb; /* private data of USB hardware driver */ + struct ser_cardstate *ser; /* private data of serial hardware driver */ + struct bas_cardstate *bas; /* private data of base hardware driver */ + } hw; +}; + +struct gigaset_driver { + struct list_head list; + spinlock_t lock; /* locks minor tables and blocked */ + //struct semaphore sem; /* locks this structure */ + struct tty_driver *tty; + unsigned have_tty; + unsigned minor; + unsigned minors; + struct cardstate *cs; + unsigned *flags; + int blocked; + + const struct gigaset_ops *ops; + struct module *owner; +}; + +struct cmdbuf_t { + struct cmdbuf_t *next, *prev; + int len, offset; + struct tasklet_struct *wake_tasklet; + unsigned char buf[0]; +}; + +struct bas_bc_state { + /* isochronous output state */ + atomic_t running; + atomic_t corrbytes; + spinlock_t isooutlock; + struct isow_urbctx_t isoouturbs[BAS_OUTURBS]; + struct isow_urbctx_t *isooutdone, *isooutfree, *isooutovfl; + struct isowbuf_t *isooutbuf; + unsigned numsub; /* submitted URB counter (for diagnostic messages only) */ + struct tasklet_struct sent_tasklet; + + /* isochronous input state */ + spinlock_t isoinlock; + struct urb *isoinurbs[BAS_INURBS]; + unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS]; + struct urb *isoindone; /* completed isoc read URB */ + int loststatus; /* status of dropped URB */ + unsigned isoinlost; /* number of bytes lost */ + /* state of bit unstuffing algorithm (in addition to BC_state.inputstate) */ + unsigned seqlen; /* number of '1' bits not yet unstuffed */ + unsigned inbyte, inbits; /* collected bits for next byte */ + /* statistics */ + unsigned goodbytes; /* bytes correctly received */ + unsigned alignerrs; /* frames with incomplete byte at end */ + unsigned fcserrs; /* FCS errors */ + unsigned frameerrs; /* framing errors */ + unsigned giants; /* long frames */ + unsigned runts; /* short frames */ + unsigned aborts; /* HDLC aborts */ + unsigned shared0s; /* '0' bits shared between flags */ + unsigned stolen0s; /* '0' stuff bits also serving as leading flag bits */ + struct tasklet_struct rcvd_tasklet; +}; + +struct gigaset_ops { + /* Called from ev-layer.c/interface.c for sending AT commands to the device */ + int (*write_cmd)(struct cardstate *cs, + const unsigned char *buf, int len, + struct tasklet_struct *wake_tasklet); + + /* Called from interface.c for additional device control */ + int (*write_room)(struct cardstate *cs); + int (*chars_in_buffer)(struct cardstate *cs); + int (*brkchars)(struct cardstate *cs, const unsigned char buf[6]); + + /* Called from ev-layer.c after setting up connection + * Should call gigaset_bchannel_up(), when finished. */ + int (*init_bchannel)(struct bc_state *bcs); + + /* Called from ev-layer.c after hanging up + * Should call gigaset_bchannel_down(), when finished. */ + int (*close_bchannel)(struct bc_state *bcs); + + /* Called by gigaset_initcs() for setting up bcs->hw.xxx */ + int (*initbcshw)(struct bc_state *bcs); + + /* Called by gigaset_freecs() for freeing bcs->hw.xxx */ + int (*freebcshw)(struct bc_state *bcs); + + /* Called by gigaset_stop() or gigaset_bchannel_down() for resetting bcs->hw.xxx */ + void (*reinitbcshw)(struct bc_state *bcs); + + /* Called by gigaset_initcs() for setting up cs->hw.xxx */ + int (*initcshw)(struct cardstate *cs); + + /* Called by gigaset_freecs() for freeing cs->hw.xxx */ + void (*freecshw)(struct cardstate *cs); + + ///* Called by gigaset_stop() for killing URBs, shutting down the device, ... + // hardwareup: ==0: don't try to shut down the device, hardware is really not accessible + // !=0: hardware still up */ + //void (*stophw)(struct cardstate *cs, int hardwareup); + + /* Called from common.c/interface.c for additional serial port control */ + int (*set_modem_ctrl)(struct cardstate *cs, unsigned old_state, unsigned new_state); + int (*baud_rate)(struct cardstate *cs, unsigned cflag); + int (*set_line_ctrl)(struct cardstate *cs, unsigned cflag); + + /* Called from i4l.c to put an skb into the send-queue. */ + int (*send_skb)(struct bc_state *bcs, struct sk_buff *skb); + + /* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ + void (*handle_input)(struct inbuf_t *inbuf); + +}; + +/* = Common structures and definitions ======================================= */ + +/* Parser states for DLE-Event: + * <DLE-EVENT>: <DLE_FLAG> "X" <EVENT> <DLE_FLAG> "." + * <DLE_FLAG>: 0x10 + * <EVENT>: ((a-z)* | (A-Z)* | (0-10)*)+ + */ +#define DLE_FLAG 0x10 + +/* =========================================================================== + * Functions implemented in asyncdata.c + */ + +/* Called from i4l.c to put an skb into the send-queue. + * After sending gigaset_skb_sent() should be called. */ +int gigaset_m10x_send_skb(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ +void gigaset_m10x_input(struct inbuf_t *inbuf); + +/* =========================================================================== + * Functions implemented in isocdata.c + */ + +/* Called from i4l.c to put an skb into the send-queue. + * After sending gigaset_skb_sent() should be called. */ +int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from ev-layer.c to process a block of data + * received through the common/control channel. */ +void gigaset_isoc_input(struct inbuf_t *inbuf); + +/* Called from bas-gigaset.c to process a block of data + * received through the isochronous channel */ +void gigaset_isoc_receive(unsigned char *src, unsigned count, struct bc_state *bcs); + +/* Called from bas-gigaset.c to put a block of data + * into the isochronous output buffer */ +int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len); + +/* Called from bas-gigaset.c to initialize the isochronous output buffer */ +void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle); + +/* Called from bas-gigaset.c to retrieve a block of bytes for sending */ +int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size); + +/* =========================================================================== + * Functions implemented in i4l.c/gigaset.h + */ + +/* Called by gigaset_initcs() for setting up with the isdn4linux subsystem */ +int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid); + +/* Called from xxx-gigaset.c to indicate completion of sending an skb */ +void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb); + +/* Called from common.c/ev-layer.c to indicate events relevant to the LL */ +int gigaset_isdn_icall(struct at_state_t *at_state); +int gigaset_isdn_setup_accept(struct at_state_t *at_state); +int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data); + +void gigaset_i4l_cmd(struct cardstate *cs, int cmd); +void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd); + + +static inline void gigaset_isdn_rcv_err(struct bc_state *bcs) +{ + isdn_ctrl response; + + /* error -> LL */ + dbg(DEBUG_CMD, "sending L1ERR"); + response.driver = bcs->cs->myid; + response.command = ISDN_STAT_L1ERR; + response.arg = bcs->channel; + response.parm.errcode = ISDN_STAT_L1ERR_RECV; + bcs->cs->iif.statcallb(&response); +} + +/* =========================================================================== + * Functions implemented in ev-layer.c + */ + +/* tasklet called from common.c to process queued events */ +void gigaset_handle_event(unsigned long data); + +/* called from isocdata.c / asyncdata.c + * when a complete modem response line has been received */ +void gigaset_handle_modem_response(struct cardstate *cs); + +/* =========================================================================== + * Functions implemented in proc.c + */ + +/* initialize sysfs for device */ +void gigaset_init_dev_sysfs(struct usb_interface *interface); +void gigaset_free_dev_sysfs(struct usb_interface *interface); + +/* =========================================================================== + * Functions implemented in common.c/gigaset.h + */ + +void gigaset_bcs_reinit(struct bc_state *bcs); +void gigaset_at_init(struct at_state_t *at_state, struct bc_state *bcs, + struct cardstate *cs, int cid); +int gigaset_get_channel(struct bc_state *bcs); +void gigaset_free_channel(struct bc_state *bcs); +int gigaset_get_channels(struct cardstate *cs); +void gigaset_free_channels(struct cardstate *cs); +void gigaset_block_channels(struct cardstate *cs); + +/* Allocate and initialize driver structure. */ +struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, + const char *procname, + const char *devname, + const char *devfsname, + const struct gigaset_ops *ops, + struct module *owner); + +/* Deallocate driver structure. */ +void gigaset_freedriver(struct gigaset_driver *drv); +void gigaset_debugdrivers(void); +struct cardstate *gigaset_get_cs_by_minor(unsigned minor); +struct cardstate *gigaset_get_cs_by_tty(struct tty_struct *tty); +struct cardstate *gigaset_get_cs_by_id(int id); + +/* For drivers without fixed assignment device<->cardstate (usb) */ +struct cardstate *gigaset_getunassignedcs(struct gigaset_driver *drv); +void gigaset_unassign(struct cardstate *cs); +void gigaset_blockdriver(struct gigaset_driver *drv); + +/* Allocate and initialize card state. Calls hardware dependent gigaset_init[b]cs(). */ +struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, + int onechannel, int ignoreframes, + int cidmode, const char *modulename); + +/* Free card state. Calls hardware dependent gigaset_free[b]cs(). */ +void gigaset_freecs(struct cardstate *cs); + +/* Tell common.c that hardware and driver are ready. */ +int gigaset_start(struct cardstate *cs); + +/* Tell common.c that the device is not present any more. */ +void gigaset_stop(struct cardstate *cs); + +/* Tell common.c that the driver is being unloaded. */ +void gigaset_shutdown(struct cardstate *cs); + +/* Tell common.c that an skb has been sent. */ +void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb); + +/* Append event to the queue. + * Returns NULL on failure or a pointer to the event on success. + * ptr must be kmalloc()ed (and not be freed by the caller). + */ +struct event_t *gigaset_add_event(struct cardstate *cs, + struct at_state_t *at_state, int type, + void *ptr, int parameter, void *arg); + +/* Called on CONFIG1 command from frontend. */ +int gigaset_enterconfigmode(struct cardstate *cs); //0: success <0: errorcode + +/* cs->lock must not be locked */ +static inline void gigaset_schedule_event(struct cardstate *cs) +{ + unsigned long flags; + spin_lock_irqsave(&cs->lock, flags); + if (atomic_read(&cs->running)) + tasklet_schedule(&cs->event_tasklet); + spin_unlock_irqrestore(&cs->lock, flags); +} + +/* Tell common.c that B channel has been closed. */ +/* cs->lock must not be locked */ +static inline void gigaset_bchannel_down(struct bc_state *bcs) +{ + gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_CLOSED, NULL, 0, NULL); + + dbg(DEBUG_CMD, "scheduling BC_CLOSED"); + gigaset_schedule_event(bcs->cs); +} + +/* Tell common.c that B channel has been opened. */ +/* cs->lock must not be locked */ +static inline void gigaset_bchannel_up(struct bc_state *bcs) +{ + gigaset_add_event(bcs->cs, &bcs->at_state, EV_BC_OPEN, NULL, 0, NULL); + + dbg(DEBUG_CMD, "scheduling BC_OPEN"); + gigaset_schedule_event(bcs->cs); +} + +/* handling routines for sk_buff */ +/* ============================= */ + +/* private version of __skb_put() + * append 'len' bytes to the content of 'skb', already knowing that the + * existing buffer can accomodate them + * returns a pointer to the location where the new bytes should be copied to + * This function does not take any locks so it must be called with the + * appropriate locks held only. + */ +static inline unsigned char *gigaset_skb_put_quick(struct sk_buff *skb, + unsigned int len) +{ + unsigned char *tmp = skb->tail; + /*SKB_LINEAR_ASSERT(skb);*/ /* not needed here */ + skb->tail += len; + skb->len += len; + return tmp; +} + +/* pass received skb to LL + * Warning: skb must not be accessed anymore! + */ +static inline void gigaset_rcv_skb(struct sk_buff *skb, + struct cardstate *cs, + struct bc_state *bcs) +{ + cs->iif.rcvcallb_skb(cs->myid, bcs->channel, skb); + bcs->trans_down++; +} + +/* handle reception of corrupted skb + * Warning: skb must not be accessed anymore! + */ +static inline void gigaset_rcv_error(struct sk_buff *procskb, + struct cardstate *cs, + struct bc_state *bcs) +{ + if (procskb) + dev_kfree_skb(procskb); + + if (bcs->ignore) + --bcs->ignore; + else { + ++bcs->corrupted; + gigaset_isdn_rcv_err(bcs); + } +} + + +/* bitwise byte inversion table */ +extern __u8 gigaset_invtab[]; /* in common.c */ + + +/* append received bytes to inbuf */ +static inline int gigaset_fill_inbuf(struct inbuf_t *inbuf, + const unsigned char *src, + unsigned numbytes) +{ + unsigned n, head, tail, bytesleft; + + dbg(DEBUG_INTR, "received %u bytes", numbytes); + + if (!numbytes) + return 0; + + bytesleft = numbytes; + tail = atomic_read(&inbuf->tail); + head = atomic_read(&inbuf->head); + dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail); + + while (bytesleft) { + if (head > tail) + n = head - 1 - tail; + else if (head == 0) + n = (RBUFSIZE-1) - tail; + else + n = RBUFSIZE - tail; + if (!n) { + err("buffer overflow (%u bytes lost)", bytesleft); + break; + } + if (n > bytesleft) + n = bytesleft; + memcpy(inbuf->data + tail, src, n); + bytesleft -= n; + tail = (tail + n) % RBUFSIZE; + src += n; + } + dbg(DEBUG_INTR, "setting tail to %u", tail); + atomic_set(&inbuf->tail, tail); + return numbytes != bytesleft; +} + +/* =========================================================================== + * Functions implemented in interface.c + */ + +/* initialize interface */ +void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, + const char *devname, const char *devfsname); +/* release interface */ +void gigaset_if_freedriver(struct gigaset_driver *drv); +/* add minor */ +void gigaset_if_init(struct cardstate *cs); +/* remove minor */ +void gigaset_if_free(struct cardstate *cs); +/* device received data */ +void gigaset_if_receive(struct cardstate *cs, + unsigned char *buffer, size_t len); + +#endif diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c new file mode 100644 index 00000000000..731a675f21b --- /dev/null +++ b/drivers/isdn/gigaset/i4l.c @@ -0,0 +1,567 @@ +/* + * Stuff used by all variants of the driver + * + * Copyright (c) 2001 by Stefan Eilers (Eilers.Stefan@epost.de), + * Hansjoerg Lipp (hjlipp@web.de), + * Tilman Schmidt (tilman@imap.cc). + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: i4l.c,v 1.3.2.9 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" + +/* == Handling of I4L IO ============================================================================*/ + +/* writebuf_from_LL + * called by LL to transmit data on an open channel + * inserts the buffer data into the send queue and starts the transmission + * Note that this operation must not sleep! + * When the buffer is processed completely, gigaset_skb_sent() should be called. + * parameters: + * driverID driver ID as assigned by LL + * channel channel number + * ack if != 0 LL wants to be notified on completion via statcallb(ISDN_STAT_BSENT) + * skb skb containing data to send + * return value: + * number of accepted bytes + * 0 if temporarily unable to accept data (out of buffer space) + * <0 on error (eg. -EINVAL) + */ +static int writebuf_from_LL(int driverID, int channel, int ack, struct sk_buff *skb) +{ + struct cardstate *cs; + struct bc_state *bcs; + unsigned len; + unsigned skblen; + + if (!(cs = gigaset_get_cs_by_id(driverID))) { + err("%s: invalid driver ID (%d)", __func__, driverID); + return -ENODEV; + } + if (channel < 0 || channel >= cs->channels) { + err("%s: invalid channel ID (%d)", __func__, channel); + return -ENODEV; + } + bcs = &cs->bcs[channel]; + len = skb->len; + + dbg(DEBUG_LLDATA, + "Receiving data from LL (id: %d, channel: %d, ack: %d, size: %d)", + driverID, channel, ack, len); + + if (!len) { + if (ack) + warn("not ACKing empty packet from LL"); + return 0; + } + if (len > MAX_BUF_SIZE) { + err("%s: packet too large (%d bytes)", __func__, channel); + return -EINVAL; + } + + if (!atomic_read(&cs->connected)) + return -ENODEV; + + skblen = ack ? len : 0; + skb->head[0] = skblen & 0xff; + skb->head[1] = skblen >> 8; + dbg(DEBUG_MCMD, "skb: len=%u, skblen=%u: %02x %02x", len, skblen, + (unsigned) skb->head[0], (unsigned) skb->head[1]); + + /* pass to device-specific module */ + return cs->ops->send_skb(bcs, skb); +} + +void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) +{ + unsigned len; + isdn_ctrl response; + + ++bcs->trans_up; + + if (skb->len) + warn("%s: skb->len==%d", __func__, skb->len); + + len = (unsigned char) skb->head[0] | + (unsigned) (unsigned char) skb->head[1] << 8; + if (len) { + dbg(DEBUG_MCMD, + "Acknowledge sending to LL (id: %d, channel: %d size: %u)", + bcs->cs->myid, bcs->channel, len); + + response.driver = bcs->cs->myid; + response.command = ISDN_STAT_BSENT; + response.arg = bcs->channel; + response.parm.length = len; + bcs->cs->iif.statcallb(&response); + } +} +EXPORT_SYMBOL_GPL(gigaset_skb_sent); + +/* This function will be called by LL to send commands + * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL, + * so don't put too much effort into it. + */ +static int command_from_LL(isdn_ctrl *cntrl) +{ + struct cardstate *cs = gigaset_get_cs_by_id(cntrl->driver); + //isdn_ctrl response; + //unsigned long flags; + struct bc_state *bcs; + int retval = 0; + struct setup_parm *sp; + + //dbg(DEBUG_ANY, "Gigaset_HW: Receiving command"); + gigaset_debugdrivers(); + + /* Terminate this call if no device is present. Bt if the command is "ISDN_CMD_LOCK" or + * "ISDN_CMD_UNLOCK" then execute it due to the fact that they are device independent ! + */ + //FIXME "remove test for &connected" + if ((!cs || !atomic_read(&cs->connected))) { + warn("LL tried to access unknown device with nr. %d", + cntrl->driver); + return -ENODEV; + } + + switch (cntrl->command) { + case ISDN_CMD_IOCTL: + + dbg(DEBUG_ANY, "ISDN_CMD_IOCTL (driver:%d,arg: %ld)", + cntrl->driver, cntrl->arg); + + warn("ISDN_CMD_IOCTL is not supported."); + return -EINVAL; + + case ISDN_CMD_DIAL: + dbg(DEBUG_ANY, "ISDN_CMD_DIAL (driver: %d, channel: %ld, " + "phone: %s,ownmsn: %s, si1: %d, si2: %d)", + cntrl->driver, cntrl->arg, + cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn, + cntrl->parm.setup.si1, cntrl->parm.setup.si2); + + if (cntrl->arg >= cs->channels) { + err("invalid channel (%d)", (int) cntrl->arg); + return -EINVAL; + } + + bcs = cs->bcs + cntrl->arg; + + if (!gigaset_get_channel(bcs)) { + err("channel not free"); + return -EBUSY; + } + + sp = kmalloc(sizeof *sp, GFP_ATOMIC); + if (!sp) { + gigaset_free_channel(bcs); + err("ISDN_CMD_DIAL: out of memory"); + return -ENOMEM; + } + *sp = cntrl->parm.setup; + + if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, + atomic_read(&bcs->at_state.seq_index), + NULL)) { + //FIXME what should we do? + kfree(sp); + gigaset_free_channel(bcs); + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling DIAL"); + gigaset_schedule_event(cs); + break; + case ISDN_CMD_ACCEPTD: //FIXME + dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTD"); + + if (cntrl->arg >= cs->channels) { + err("invalid channel (%d)", (int) cntrl->arg); + return -EINVAL; + } + + if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state, + EV_ACCEPT, NULL, 0, NULL)) { + //FIXME what should we do? + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling ACCEPT"); + gigaset_schedule_event(cs); + + break; + case ISDN_CMD_ACCEPTB: + dbg(DEBUG_ANY, "ISDN_CMD_ACCEPTB"); + break; + case ISDN_CMD_HANGUP: + dbg(DEBUG_ANY, + "ISDN_CMD_HANGUP (channel: %d)", (int) cntrl->arg); + + if (cntrl->arg >= cs->channels) { + err("ISDN_CMD_HANGUP: invalid channel (%u)", + (unsigned) cntrl->arg); + return -EINVAL; + } + + if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg].at_state, + EV_HUP, NULL, 0, NULL)) { + //FIXME what should we do? + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling HUP"); + gigaset_schedule_event(cs); + + break; + case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */ //FIXME + dbg(DEBUG_ANY, "ISDN_CMD_CLREAZ"); + break; + case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */ //FIXME + dbg(DEBUG_ANY, + "ISDN_CMD_SETEAZ (id:%d, channel: %ld, number: %s)", + cntrl->driver, cntrl->arg, cntrl->parm.num); + break; + case ISDN_CMD_SETL2: /* Set L2 to given protocol */ + dbg(DEBUG_ANY, "ISDN_CMD_SETL2 (Channel: %ld, Proto: %lx)", + cntrl->arg & 0xff, (cntrl->arg >> 8)); + + if ((cntrl->arg & 0xff) >= cs->channels) { + err("invalid channel (%u)", + (unsigned) cntrl->arg & 0xff); + return -EINVAL; + } + + if (!gigaset_add_event(cs, &cs->bcs[cntrl->arg & 0xff].at_state, + EV_PROTO_L2, NULL, cntrl->arg >> 8, + NULL)) { + //FIXME what should we do? + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling PROTO_L2"); + gigaset_schedule_event(cs); + break; + case ISDN_CMD_SETL3: /* Set L3 to given protocol */ + dbg(DEBUG_ANY, "ISDN_CMD_SETL3 (Channel: %ld, Proto: %lx)", + cntrl->arg & 0xff, (cntrl->arg >> 8)); + + if ((cntrl->arg & 0xff) >= cs->channels) { + err("invalid channel (%u)", + (unsigned) cntrl->arg & 0xff); + return -EINVAL; + } + + if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) { + err("invalid protocol %lu", cntrl->arg >> 8); + return -EINVAL; + } + + break; + case ISDN_CMD_PROCEED: + dbg(DEBUG_ANY, "ISDN_CMD_PROCEED"); //FIXME + break; + case ISDN_CMD_ALERT: + dbg(DEBUG_ANY, "ISDN_CMD_ALERT"); //FIXME + if (cntrl->arg >= cs->channels) { + err("invalid channel (%d)", (int) cntrl->arg); + return -EINVAL; + } + //bcs = cs->bcs + cntrl->arg; + //bcs->proto2 = -1; + // FIXME + break; + case ISDN_CMD_REDIR: + dbg(DEBUG_ANY, "ISDN_CMD_REDIR"); //FIXME + break; + case ISDN_CMD_PROT_IO: + dbg(DEBUG_ANY, "ISDN_CMD_PROT_IO"); + break; + case ISDN_CMD_FAXCMD: + dbg(DEBUG_ANY, "ISDN_CMD_FAXCMD"); + break; + case ISDN_CMD_GETL2: + dbg(DEBUG_ANY, "ISDN_CMD_GETL2"); + break; + case ISDN_CMD_GETL3: + dbg(DEBUG_ANY, "ISDN_CMD_GETL3"); + break; + case ISDN_CMD_GETEAZ: + dbg(DEBUG_ANY, "ISDN_CMD_GETEAZ"); + break; + case ISDN_CMD_SETSIL: + dbg(DEBUG_ANY, "ISDN_CMD_SETSIL"); + break; + case ISDN_CMD_GETSIL: + dbg(DEBUG_ANY, "ISDN_CMD_GETSIL"); + break; + default: + err("unknown command %d from LL", + cntrl->command); + return -EINVAL; + } + + return retval; +} + +void gigaset_i4l_cmd(struct cardstate *cs, int cmd) +{ + isdn_ctrl command; + + command.driver = cs->myid; + command.command = cmd; + command.arg = 0; + cs->iif.statcallb(&command); +} + +void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd) +{ + isdn_ctrl command; + + command.driver = bcs->cs->myid; + command.command = cmd; + command.arg = bcs->channel; + bcs->cs->iif.statcallb(&command); +} + +int gigaset_isdn_setup_dial(struct at_state_t *at_state, void *data) +{ + struct bc_state *bcs = at_state->bcs; + unsigned proto; + const char *bc; + size_t length[AT_NUM]; + size_t l; + int i; + struct setup_parm *sp = data; + + switch (bcs->proto2) { + case ISDN_PROTO_L2_HDLC: + proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */ + break; + case ISDN_PROTO_L2_TRANS: + proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */ + break; + default: + err("invalid protocol: %u", bcs->proto2); + return -EINVAL; + } + + switch (sp->si1) { + case 1: /* audio */ + bc = "9090A3"; /* 3.1 kHz audio, A-law */ + break; + case 7: /* data */ + default: /* hope the app knows what it is doing */ + bc = "8890"; /* unrestricted digital information */ + } + //FIXME add missing si1 values from 1TR6, inspect si2, set HLC/LLC + + length[AT_DIAL ] = 1 + strlen(sp->phone) + 1 + 1; + l = strlen(sp->eazmsn); + length[AT_MSN ] = l ? 6 + l + 1 + 1 : 0; + length[AT_BC ] = 5 + strlen(bc) + 1 + 1; + length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */ + length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */ + length[AT_TYPE ] = 6 + 1 + 1 + 1; /* call type: 1 character */ + length[AT_HLC ] = 0; + + for (i = 0; i < AT_NUM; ++i) { + kfree(bcs->commands[i]); + bcs->commands[i] = NULL; + if (length[i] && + !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) { + err("out of memory"); + return -ENOMEM; + } + } + + /* type = 1: extern, 0: intern, 2: recall, 3: door, 4: centrex */ + if (sp->phone[0] == '*' && sp->phone[1] == '*') { + /* internal call: translate ** prefix to CTP value */ + snprintf(bcs->commands[AT_DIAL], length[AT_DIAL], + "D%s\r", sp->phone+2); + strncpy(bcs->commands[AT_TYPE], "^SCTP=0\r", length[AT_TYPE]); + } else { + snprintf(bcs->commands[AT_DIAL], length[AT_DIAL], + "D%s\r", sp->phone); + strncpy(bcs->commands[AT_TYPE], "^SCTP=1\r", length[AT_TYPE]); + } + + if (bcs->commands[AT_MSN]) + snprintf(bcs->commands[AT_MSN], length[AT_MSN], "^SMSN=%s\r", sp->eazmsn); + snprintf(bcs->commands[AT_BC ], length[AT_BC ], "^SBC=%s\r", bc); + snprintf(bcs->commands[AT_PROTO], length[AT_PROTO], "^SBPR=%u\r", proto); + snprintf(bcs->commands[AT_ISO ], length[AT_ISO ], "^SISO=%u\r", (unsigned)bcs->channel + 1); + + return 0; +} + +int gigaset_isdn_setup_accept(struct at_state_t *at_state) +{ + unsigned proto; + size_t length[AT_NUM]; + int i; + struct bc_state *bcs = at_state->bcs; + + switch (bcs->proto2) { + case ISDN_PROTO_L2_HDLC: + proto = 1; /* 0: Bitsynchron, 1: HDLC, 2: voice */ + break; + case ISDN_PROTO_L2_TRANS: + proto = 2; /* 0: Bitsynchron, 1: HDLC, 2: voice */ + break; + default: + err("invalid protocol: %u", bcs->proto2); + return -EINVAL; + } + + length[AT_DIAL ] = 0; + length[AT_MSN ] = 0; + length[AT_BC ] = 0; + length[AT_PROTO] = 6 + 1 + 1 + 1; /* proto: 1 character */ + length[AT_ISO ] = 6 + 1 + 1 + 1; /* channel: 1 character */ + length[AT_TYPE ] = 0; + length[AT_HLC ] = 0; + + for (i = 0; i < AT_NUM; ++i) { + kfree(bcs->commands[i]); + bcs->commands[i] = NULL; + if (length[i] && + !(bcs->commands[i] = kmalloc(length[i], GFP_ATOMIC))) { + err("out of memory"); + return -ENOMEM; + } + } + + snprintf(bcs->commands[AT_PROTO], length[AT_PROTO], "^SBPR=%u\r", proto); + snprintf(bcs->commands[AT_ISO ], length[AT_ISO ], "^SISO=%u\r", (unsigned) bcs->channel + 1); + + return 0; +} + +int gigaset_isdn_icall(struct at_state_t *at_state) +{ + struct cardstate *cs = at_state->cs; + struct bc_state *bcs = at_state->bcs; + isdn_ctrl response; + int retval; + + /* fill ICALL structure */ + response.parm.setup.si1 = 0; /* default: unknown */ + response.parm.setup.si2 = 0; + response.parm.setup.screen = 0; //FIXME how to set these? + response.parm.setup.plan = 0; + if (!at_state->str_var[STR_ZBC]) { + /* no BC (internal call): assume speech, A-law */ + response.parm.setup.si1 = 1; + } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) { + /* unrestricted digital information */ + response.parm.setup.si1 = 7; + } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) { + /* speech, A-law */ + response.parm.setup.si1 = 1; + } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) { + /* 3,1 kHz audio, A-law */ + response.parm.setup.si1 = 1; + response.parm.setup.si2 = 2; + } else { + warn("RING ignored - unsupported BC %s", + at_state->str_var[STR_ZBC]); + return ICALL_IGNORE; + } + if (at_state->str_var[STR_NMBR]) { + strncpy(response.parm.setup.phone, at_state->str_var[STR_NMBR], + sizeof response.parm.setup.phone - 1); + response.parm.setup.phone[sizeof response.parm.setup.phone - 1] = 0; + } else + response.parm.setup.phone[0] = 0; + if (at_state->str_var[STR_ZCPN]) { + strncpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN], + sizeof response.parm.setup.eazmsn - 1); + response.parm.setup.eazmsn[sizeof response.parm.setup.eazmsn - 1] = 0; + } else + response.parm.setup.eazmsn[0] = 0; + + if (!bcs) { + notice("no channel for incoming call"); + dbg(DEBUG_CMD, "Sending ICALLW"); + response.command = ISDN_STAT_ICALLW; + response.arg = 0; //FIXME + } else { + dbg(DEBUG_CMD, "Sending ICALL"); + response.command = ISDN_STAT_ICALL; + response.arg = bcs->channel; //FIXME + } + response.driver = cs->myid; + retval = cs->iif.statcallb(&response); + dbg(DEBUG_CMD, "Response: %d", retval); + switch (retval) { + case 0: /* no takers */ + return ICALL_IGNORE; + case 1: /* alerting */ + bcs->chstate |= CHS_NOTIFY_LL; + return ICALL_ACCEPT; + case 2: /* reject */ + return ICALL_REJECT; + case 3: /* incomplete */ + warn("LL requested unsupported feature: Incomplete Number"); + return ICALL_IGNORE; + case 4: /* proceeding */ + /* Gigaset will send ALERTING anyway. + * There doesn't seem to be a way to avoid this. + */ + return ICALL_ACCEPT; + case 5: /* deflect */ + warn("LL requested unsupported feature: Call Deflection"); + return ICALL_IGNORE; + default: + err("LL error %d on ICALL", retval); + return ICALL_IGNORE; + } +} + +/* Set Callback function pointer */ +int gigaset_register_to_LL(struct cardstate *cs, const char *isdnid) +{ + isdn_if *iif = &cs->iif; + + dbg(DEBUG_ANY, "Register driver capabilities to LL"); + + //iif->id[sizeof(iif->id) - 1]=0; + //strncpy(iif->id, isdnid, sizeof(iif->id) - 1); + if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index) + >= sizeof iif->id) + return -ENOMEM; //FIXME EINVAL/...?? + + iif->owner = THIS_MODULE; + iif->channels = cs->channels; /* I am supporting just one channel *//* I was supporting...*/ + iif->maxbufsize = MAX_BUF_SIZE; + iif->features = ISDN_FEATURE_L2_TRANS | /* Our device is very advanced, therefore */ + ISDN_FEATURE_L2_HDLC | +#ifdef GIG_X75 + ISDN_FEATURE_L2_X75I | +#endif + ISDN_FEATURE_L3_TRANS | + ISDN_FEATURE_P_EURO; + iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */ + iif->command = command_from_LL; + iif->writebuf_skb = writebuf_from_LL; + iif->writecmd = NULL; /* Don't support isdnctrl */ + iif->readstat = NULL; /* Don't support isdnctrl */ + iif->rcvcallb_skb = NULL; /* Will be set by LL */ + iif->statcallb = NULL; /* Will be set by LL */ + + if (!register_isdn(iif)) + return 0; + + cs->myid = iif->channels; /* Set my device id */ + return 1; +} diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c new file mode 100644 index 00000000000..3a81d9c6514 --- /dev/null +++ b/drivers/isdn/gigaset/interface.c @@ -0,0 +1,718 @@ +/* + * interface to user space for the gigaset driver + * + * Copyright (c) 2004 by Hansjoerg Lipp <hjlipp@web.de> + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * Version: $Id: interface.c,v 1.14.4.15 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/gigaset_dev.h> +#include <linux/tty.h> +#include <linux/tty_flip.h> + +/*** our ioctls ***/ + +static int if_lock(struct cardstate *cs, int *arg) +{ + int cmd = *arg; + + dbg(DEBUG_IF, "%u: if_lock (%d)", cs->minor_index, cmd); + + if (cmd > 1) + return -EINVAL; + + if (cmd < 0) { + *arg = atomic_read(&cs->mstate) == MS_LOCKED; //FIXME remove? + return 0; + } + + if (!cmd && atomic_read(&cs->mstate) == MS_LOCKED + && atomic_read(&cs->connected)) { + cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS); + cs->ops->baud_rate(cs, B115200); + cs->ops->set_line_ctrl(cs, CS8); + cs->control_state = TIOCM_DTR|TIOCM_RTS; + } + + cs->waiting = 1; + if (!gigaset_add_event(cs, &cs->at_state, EV_IF_LOCK, + NULL, cmd, NULL)) { + cs->waiting = 0; + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling IF_LOCK"); + gigaset_schedule_event(cs); + + wait_event(cs->waitqueue, !cs->waiting); + + if (cs->cmd_result >= 0) { + *arg = cs->cmd_result; + return 0; + } + + return cs->cmd_result; +} + +static int if_version(struct cardstate *cs, unsigned arg[4]) +{ + static const unsigned version[4] = GIG_VERSION; + static const unsigned compat[4] = GIG_COMPAT; + unsigned cmd = arg[0]; + + dbg(DEBUG_IF, "%u: if_version (%d)", cs->minor_index, cmd); + + switch (cmd) { + case GIGVER_DRIVER: + memcpy(arg, version, sizeof version); + return 0; + case GIGVER_COMPAT: + memcpy(arg, compat, sizeof compat); + return 0; + case GIGVER_FWBASE: + cs->waiting = 1; + if (!gigaset_add_event(cs, &cs->at_state, EV_IF_VER, + NULL, 0, arg)) { + cs->waiting = 0; + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling IF_VER"); + gigaset_schedule_event(cs); + + wait_event(cs->waitqueue, !cs->waiting); + + if (cs->cmd_result >= 0) + return 0; + + return cs->cmd_result; + default: + return -EINVAL; + } +} + +static int if_config(struct cardstate *cs, int *arg) +{ + dbg(DEBUG_IF, "%u: if_config (%d)", cs->minor_index, *arg); + + if (*arg != 1) + return -EINVAL; + + if (atomic_read(&cs->mstate) != MS_LOCKED) + return -EBUSY; + + *arg = 0; + return gigaset_enterconfigmode(cs); +} + +/*** the terminal driver ***/ +/* stolen from usbserial and some other tty drivers */ + +static int if_open(struct tty_struct *tty, struct file *filp); +static void if_close(struct tty_struct *tty, struct file *filp); +static int if_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg); +static int if_write_room(struct tty_struct *tty); +static int if_chars_in_buffer(struct tty_struct *tty); +static void if_throttle(struct tty_struct *tty); +static void if_unthrottle(struct tty_struct *tty); +static void if_set_termios(struct tty_struct *tty, struct termios *old); +static int if_tiocmget(struct tty_struct *tty, struct file *file); +static int if_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear); +static int if_write(struct tty_struct *tty, + const unsigned char *buf, int count); + +static struct tty_operations if_ops = { + .open = if_open, + .close = if_close, + .ioctl = if_ioctl, + .write = if_write, + .write_room = if_write_room, + .chars_in_buffer = if_chars_in_buffer, + .set_termios = if_set_termios, + .throttle = if_throttle, + .unthrottle = if_unthrottle, +#if 0 + .break_ctl = serial_break, +#endif + .tiocmget = if_tiocmget, + .tiocmset = if_tiocmset, +}; + +static int if_open(struct tty_struct *tty, struct file *filp) +{ + struct cardstate *cs; + unsigned long flags; + + dbg(DEBUG_IF, "%d+%d: %s()", tty->driver->minor_start, tty->index, + __FUNCTION__); + + tty->driver_data = NULL; + + cs = gigaset_get_cs_by_tty(tty); + if (!cs) + return -ENODEV; + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + tty->driver_data = cs; + + ++cs->open_count; + + if (cs->open_count == 1) { + spin_lock_irqsave(&cs->lock, flags); + cs->tty = tty; + spin_unlock_irqrestore(&cs->lock, flags); + tty->low_latency = 1; //FIXME test + //FIXME + } + + up(&cs->sem); + return 0; +} + +static void if_close(struct tty_struct *tty, struct file *filp) +{ + struct cardstate *cs; + unsigned long flags; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + down(&cs->sem); + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else { + if (!--cs->open_count) { + spin_lock_irqsave(&cs->lock, flags); + cs->tty = NULL; + spin_unlock_irqrestore(&cs->lock, flags); + //FIXME + } + } + + up(&cs->sem); +} + +static int if_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct cardstate *cs; + int retval = -ENODEV; + int int_arg; + unsigned char buf[6]; + unsigned version[4]; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, "%u: %s(0x%x)", cs->minor_index, __FUNCTION__, cmd); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else { + retval = 0; + switch (cmd) { + case GIGASET_REDIR: + retval = get_user(int_arg, (int __user *) arg); + if (retval >= 0) + retval = if_lock(cs, &int_arg); + if (retval >= 0) + retval = put_user(int_arg, (int __user *) arg); + break; + case GIGASET_CONFIG: + retval = get_user(int_arg, (int __user *) arg); + if (retval >= 0) + retval = if_config(cs, &int_arg); + if (retval >= 0) + retval = put_user(int_arg, (int __user *) arg); + break; + case GIGASET_BRKCHARS: + //FIXME test if MS_LOCKED + gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS", + 6, (const unsigned char *) arg, 1); + if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't communicate with unplugged device"); + retval = -ENODEV; + break; + } + retval = copy_from_user(&buf, + (const unsigned char __user *) arg, 6) + ? -EFAULT : 0; + if (retval >= 0) + retval = cs->ops->brkchars(cs, buf); + break; + case GIGASET_VERSION: + retval = copy_from_user(version, (unsigned __user *) arg, + sizeof version) ? -EFAULT : 0; + if (retval >= 0) + retval = if_version(cs, version); + if (retval >= 0) + retval = copy_to_user((unsigned __user *) arg, version, + sizeof version) + ? -EFAULT : 0; + break; + default: + dbg(DEBUG_ANY, "%s: arg not supported - 0x%04x", + __FUNCTION__, cmd); + retval = -ENOIOCTLCMD; + } + } + + up(&cs->sem); + + return retval; +} + +static int if_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct cardstate *cs; + int retval; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + // FIXME read from device? + retval = cs->control_state & (TIOCM_RTS|TIOCM_DTR); + + up(&cs->sem); + + return retval; +} + +static int if_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct cardstate *cs; + int retval; + unsigned mc; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, + "%u: %s(0x%x, 0x%x)", cs->minor_index, __FUNCTION__, set, clear); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't communicate with unplugged device"); + retval = -ENODEV; + } else { + mc = (cs->control_state | set) & ~clear & (TIOCM_RTS|TIOCM_DTR); + retval = cs->ops->set_modem_ctrl(cs, cs->control_state, mc); + cs->control_state = mc; + } + + up(&cs->sem); + + return retval; +} + +static int if_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + struct cardstate *cs; + int retval = -ENODEV; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else if (atomic_read(&cs->mstate) != MS_LOCKED) { + warn("can't write to unlocked device"); + retval = -EBUSY; + } else if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't write to unplugged device"); + retval = -EBUSY; //FIXME + } else { + retval = cs->ops->write_cmd(cs, buf, count, + &cs->if_wake_tasklet); + } + + up(&cs->sem); + + return retval; +} + +static int if_write_room(struct tty_struct *tty) +{ + struct cardstate *cs; + int retval = -ENODEV; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else if (atomic_read(&cs->mstate) != MS_LOCKED) { + warn("can't write to unlocked device"); + retval = -EBUSY; //FIXME + } else if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't write to unplugged device"); + retval = -EBUSY; //FIXME + } else + retval = cs->ops->write_room(cs); + + up(&cs->sem); + + return retval; +} + +static int if_chars_in_buffer(struct tty_struct *tty) +{ + struct cardstate *cs; + int retval = -ENODEV; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return -ENODEV; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else if (atomic_read(&cs->mstate) != MS_LOCKED) { + warn("can't write to unlocked device"); + retval = -EBUSY; + } else if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't write to unplugged device"); + retval = -EBUSY; //FIXME + } else + retval = cs->ops->chars_in_buffer(cs); + + up(&cs->sem); + + return retval; +} + +static void if_throttle(struct tty_struct *tty) +{ + struct cardstate *cs; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + down(&cs->sem); + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else { + //FIXME + } + + up(&cs->sem); +} + +static void if_unthrottle(struct tty_struct *tty) +{ + struct cardstate *cs; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + down(&cs->sem); + + if (!cs->open_count) + warn("%s: device not opened", __FUNCTION__); + else { + //FIXME + } + + up(&cs->sem); +} + +static void if_set_termios(struct tty_struct *tty, struct termios *old) +{ + struct cardstate *cs; + unsigned int iflag; + unsigned int cflag; + unsigned int old_cflag; + unsigned int control_state, new_state; + + cs = (struct cardstate *) tty->driver_data; + if (!cs) { + err("cs==NULL in %s", __FUNCTION__); + return; + } + + dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__); + + down(&cs->sem); + + if (!cs->open_count) { + warn("%s: device not opened", __FUNCTION__); + goto out; + } + + if (!atomic_read(&cs->connected)) { + dbg(DEBUG_ANY, "can't communicate with unplugged device"); + goto out; + } + + // stolen from mct_u232.c + iflag = tty->termios->c_iflag; + cflag = tty->termios->c_cflag; + old_cflag = old ? old->c_cflag : cflag; //FIXME? + dbg(DEBUG_IF, "%u: iflag %x cflag %x old %x", cs->minor_index, + iflag, cflag, old_cflag); + + /* get a local copy of the current port settings */ + control_state = cs->control_state; + + /* + * Update baud rate. + * Do not attempt to cache old rates and skip settings, + * disconnects screw such tricks up completely. + * Premature optimization is the root of all evil. + */ + + /* reassert DTR and (maybe) RTS on transition from B0 */ + if ((old_cflag & CBAUD) == B0) { + new_state = control_state | TIOCM_DTR; + /* don't set RTS if using hardware flow control */ + if (!(old_cflag & CRTSCTS)) + new_state |= TIOCM_RTS; + dbg(DEBUG_IF, "%u: from B0 - set DTR%s", cs->minor_index, + (new_state & TIOCM_RTS) ? " only" : "/RTS"); + cs->ops->set_modem_ctrl(cs, control_state, new_state); + control_state = new_state; + } + + cs->ops->baud_rate(cs, cflag & CBAUD); + + if ((cflag & CBAUD) == B0) { + /* Drop RTS and DTR */ + dbg(DEBUG_IF, "%u: to B0 - drop DTR/RTS", cs->minor_index); + new_state = control_state & ~(TIOCM_DTR | TIOCM_RTS); + cs->ops->set_modem_ctrl(cs, control_state, new_state); + control_state = new_state; + } + + /* + * Update line control register (LCR) + */ + + cs->ops->set_line_ctrl(cs, cflag); + +#if 0 + //FIXME this hangs M101 [ts 2005-03-09] + //FIXME do we need this? + /* + * Set flow control: well, I do not really now how to handle DTR/RTS. + * Just do what we have seen with SniffUSB on Win98. + */ + /* Drop DTR/RTS if no flow control otherwise assert */ + dbg(DEBUG_IF, "%u: control_state %x", cs->minor_index, control_state); + new_state = control_state; + if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS)) + new_state |= TIOCM_DTR | TIOCM_RTS; + else + new_state &= ~(TIOCM_DTR | TIOCM_RTS); + if (new_state != control_state) { + dbg(DEBUG_IF, "%u: new_state %x", cs->minor_index, new_state); + gigaset_set_modem_ctrl(cs, control_state, new_state); // FIXME: mct_u232.c sets the old state here. is this a bug? + control_state = new_state; + } +#endif + + /* save off the modified port settings */ + cs->control_state = control_state; + +out: + up(&cs->sem); +} + + +/* wakeup tasklet for the write operation */ +static void if_wake(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + struct tty_struct *tty; + + tty = cs->tty; + if (!tty) + return; + + if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && + tty->ldisc.write_wakeup) { + dbg(DEBUG_IF, "write wakeup call"); + tty->ldisc.write_wakeup(tty); + } + + wake_up_interruptible(&tty->write_wait); +} + +/*** interface to common ***/ + +void gigaset_if_init(struct cardstate *cs) +{ + struct gigaset_driver *drv; + + drv = cs->driver; + if (!drv->have_tty) + return; + + tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs); + tty_register_device(drv->tty, cs->minor_index, NULL); +} + +void gigaset_if_free(struct cardstate *cs) +{ + struct gigaset_driver *drv; + + drv = cs->driver; + if (!drv->have_tty) + return; + + tasklet_disable(&cs->if_wake_tasklet); + tasklet_kill(&cs->if_wake_tasklet); + tty_unregister_device(drv->tty, cs->minor_index); +} + +void gigaset_if_receive(struct cardstate *cs, + unsigned char *buffer, size_t len) +{ + unsigned long flags; + struct tty_struct *tty; + + spin_lock_irqsave(&cs->lock, flags); + if ((tty = cs->tty) == NULL) + dbg(DEBUG_ANY, "receive on closed device"); + else { + tty_buffer_request_room(tty, len); + tty_insert_flip_string(tty, buffer, len); + tty_flip_buffer_push(tty); + } + spin_unlock_irqrestore(&cs->lock, flags); +} +EXPORT_SYMBOL_GPL(gigaset_if_receive); + +/* gigaset_if_initdriver + * Initialize tty interface. + * parameters: + * drv Driver + * procname Name of the driver (e.g. for /proc/tty/drivers) + * devname Name of the device files (prefix without minor number) + * devfsname Devfs name of the device files without %d + */ +void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname, + const char *devname, const char *devfsname) +{ + unsigned minors = drv->minors; + int ret; + struct tty_driver *tty; + + drv->have_tty = 0; + + if ((drv->tty = alloc_tty_driver(minors)) == NULL) + goto enomem; + tty = drv->tty; + + tty->magic = TTY_DRIVER_MAGIC, + tty->major = GIG_MAJOR, + tty->type = TTY_DRIVER_TYPE_SERIAL, + tty->subtype = SERIAL_TYPE_NORMAL, + tty->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + + tty->driver_name = procname; + tty->name = devname; + tty->minor_start = drv->minor; + tty->num = drv->minors; + + tty->owner = THIS_MODULE; + tty->devfs_name = devfsname; + + tty->init_termios = tty_std_termios; //FIXME + tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; //FIXME + tty_set_operations(tty, &if_ops); + + ret = tty_register_driver(tty); + if (ret < 0) { + warn("failed to register tty driver (error %d)", ret); + goto error; + } + dbg(DEBUG_IF, "tty driver initialized"); + drv->have_tty = 1; + return; + +enomem: + warn("could not allocate tty structures"); +error: + if (drv->tty) + put_tty_driver(drv->tty); +} + +void gigaset_if_freedriver(struct gigaset_driver *drv) +{ + if (!drv->have_tty) + return; + + drv->have_tty = 0; + tty_unregister_driver(drv->tty); + put_tty_driver(drv->tty); +} diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c new file mode 100644 index 00000000000..5744eb91b31 --- /dev/null +++ b/drivers/isdn/gigaset/isocdata.c @@ -0,0 +1,1009 @@ +/* + * Common data handling layer for bas_gigaset + * + * Copyright (c) 2005 by Tilman Schmidt <tilman@imap.cc>, + * Hansjoerg Lipp <hjlipp@web.de>. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: isocdata.c,v 1.2.2.5 2005/11/13 23:05:19 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/crc-ccitt.h> + +/* access methods for isowbuf_t */ +/* ============================ */ + +/* initialize buffer structure + */ +void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle) +{ + atomic_set(&iwb->read, 0); + atomic_set(&iwb->nextread, 0); + atomic_set(&iwb->write, 0); + atomic_set(&iwb->writesem, 1); + iwb->wbits = 0; + iwb->idle = idle; + memset(iwb->data + BAS_OUTBUFSIZE, idle, BAS_OUTBUFPAD); +} + +/* compute number of bytes which can be appended to buffer + * so that there is still room to append a maximum frame of flags + */ +static inline int isowbuf_freebytes(struct isowbuf_t *iwb) +{ + int read, write, freebytes; + + read = atomic_read(&iwb->read); + write = atomic_read(&iwb->write); + if ((freebytes = read - write) > 0) { + /* no wraparound: need padding space within regular area */ + return freebytes - BAS_OUTBUFPAD; + } else if (read < BAS_OUTBUFPAD) { + /* wraparound: can use space up to end of regular area */ + return BAS_OUTBUFSIZE - write; + } else { + /* following the wraparound yields more space */ + return freebytes + BAS_OUTBUFSIZE - BAS_OUTBUFPAD; + } +} + +/* compare two offsets within the buffer + * The buffer is seen as circular, with the read position as start + * returns -1/0/1 if position a </=/> position b without crossing 'read' + */ +static inline int isowbuf_poscmp(struct isowbuf_t *iwb, int a, int b) +{ + int read; + if (a == b) + return 0; + read = atomic_read(&iwb->read); + if (a < b) { + if (a < read && read <= b) + return +1; + else + return -1; + } else { + if (b < read && read <= a) + return -1; + else + return +1; + } +} + +/* start writing + * acquire the write semaphore + * return true if acquired, false if busy + */ +static inline int isowbuf_startwrite(struct isowbuf_t *iwb) +{ + if (!atomic_dec_and_test(&iwb->writesem)) { + atomic_inc(&iwb->writesem); + dbg(DEBUG_ISO, + "%s: couldn't acquire iso write semaphore", __func__); + return 0; + } +#ifdef CONFIG_GIGASET_DEBUG + dbg(DEBUG_ISO, + "%s: acquired iso write semaphore, data[write]=%02x, nbits=%d", + __func__, iwb->data[atomic_read(&iwb->write)], iwb->wbits); +#endif + return 1; +} + +/* finish writing + * release the write semaphore and update the maximum buffer fill level + * returns the current write position + */ +static inline int isowbuf_donewrite(struct isowbuf_t *iwb) +{ + int write = atomic_read(&iwb->write); + atomic_inc(&iwb->writesem); + return write; +} + +/* append bits to buffer without any checks + * - data contains bits to append, starting at LSB + * - nbits is number of bits to append (0..24) + * must be called with the write semaphore held + * If more than nbits bits are set in data, the extraneous bits are set in the + * buffer too, but the write position is only advanced by nbits. + */ +static inline void isowbuf_putbits(struct isowbuf_t *iwb, u32 data, int nbits) +{ + int write = atomic_read(&iwb->write); + data <<= iwb->wbits; + data |= iwb->data[write]; + nbits += iwb->wbits; + while (nbits >= 8) { + iwb->data[write++] = data & 0xff; + write %= BAS_OUTBUFSIZE; + data >>= 8; + nbits -= 8; + } + iwb->wbits = nbits; + iwb->data[write] = data & 0xff; + atomic_set(&iwb->write, write); +} + +/* put final flag on HDLC bitstream + * also sets the idle fill byte to the correspondingly shifted flag pattern + * must be called with the write semaphore held + */ +static inline void isowbuf_putflag(struct isowbuf_t *iwb) +{ + int write; + + /* add two flags, thus reliably covering one byte */ + isowbuf_putbits(iwb, 0x7e7e, 8); + /* recover the idle flag byte */ + write = atomic_read(&iwb->write); + iwb->idle = iwb->data[write]; + dbg(DEBUG_ISO, "idle fill byte %02x", iwb->idle); + /* mask extraneous bits in buffer */ + iwb->data[write] &= (1 << iwb->wbits) - 1; +} + +/* retrieve a block of bytes for sending + * The requested number of bytes is provided as a contiguous block. + * If necessary, the frame is filled to the requested number of bytes + * with the idle value. + * returns offset to frame, < 0 on busy or error + */ +int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size) +{ + int read, write, limit, src, dst; + unsigned char pbyte; + + read = atomic_read(&iwb->nextread); + write = atomic_read(&iwb->write); + if (likely(read == write)) { + //dbg(DEBUG_STREAM, "%s: send buffer empty", __func__); + /* return idle frame */ + return read < BAS_OUTBUFPAD ? + BAS_OUTBUFSIZE : read - BAS_OUTBUFPAD; + } + + limit = read + size; + dbg(DEBUG_STREAM, + "%s: read=%d write=%d limit=%d", __func__, read, write, limit); +#ifdef CONFIG_GIGASET_DEBUG + if (unlikely(size < 0 || size > BAS_OUTBUFPAD)) { + err("invalid size %d", size); + return -EINVAL; + } + src = atomic_read(&iwb->read); + if (unlikely(limit > BAS_OUTBUFSIZE + BAS_OUTBUFPAD || + (read < src && limit >= src))) { + err("isoc write buffer frame reservation violated"); + return -EFAULT; + } +#endif + + if (read < write) { + /* no wraparound in valid data */ + if (limit >= write) { + /* append idle frame */ + if (!isowbuf_startwrite(iwb)) + return -EBUSY; + /* write position could have changed */ + if (limit >= (write = atomic_read(&iwb->write))) { + pbyte = iwb->data[write]; /* save partial byte */ + limit = write + BAS_OUTBUFPAD; + dbg(DEBUG_STREAM, + "%s: filling %d->%d with %02x", + __func__, write, limit, iwb->idle); + if (write + BAS_OUTBUFPAD < BAS_OUTBUFSIZE) + memset(iwb->data + write, iwb->idle, + BAS_OUTBUFPAD); + else { + /* wraparound, fill entire pad area */ + memset(iwb->data + write, iwb->idle, + BAS_OUTBUFSIZE + BAS_OUTBUFPAD + - write); + limit = 0; + } + dbg(DEBUG_STREAM, "%s: restoring %02x at %d", + __func__, pbyte, limit); + iwb->data[limit] = pbyte; /* restore partial byte */ + atomic_set(&iwb->write, limit); + } + isowbuf_donewrite(iwb); + } + } else { + /* valid data wraparound */ + if (limit >= BAS_OUTBUFSIZE) { + /* copy wrapped part into pad area */ + src = 0; + dst = BAS_OUTBUFSIZE; + while (dst < limit && src < write) + iwb->data[dst++] = iwb->data[src++]; + if (dst <= limit) { + /* fill pad area with idle byte */ + memset(iwb->data + dst, iwb->idle, + BAS_OUTBUFSIZE + BAS_OUTBUFPAD - dst); + } + limit = src; + } + } + atomic_set(&iwb->nextread, limit); + return read; +} + +/* dump_bytes + * write hex bytes to syslog for debugging + */ +static inline void dump_bytes(enum debuglevel level, const char *tag, + unsigned char *bytes, int count) +{ +#ifdef CONFIG_GIGASET_DEBUG + unsigned char c; + static char dbgline[3 * 32 + 1]; + static const char hexdigit[] = "0123456789abcdef"; + int i = 0; + IFNULLRET(tag); + IFNULLRET(bytes); + while (count-- > 0) { + if (i > sizeof(dbgline) - 4) { + dbgline[i] = '\0'; + dbg(level, "%s:%s", tag, dbgline); + i = 0; + } + c = *bytes++; + dbgline[i] = (i && !(i % 12)) ? '-' : ' '; + i++; + dbgline[i++] = hexdigit[(c >> 4) & 0x0f]; + dbgline[i++] = hexdigit[c & 0x0f]; + } + dbgline[i] = '\0'; + dbg(level, "%s:%s", tag, dbgline); +#endif +} + +/*============================================================================*/ + +/* bytewise HDLC bitstuffing via table lookup + * lookup table: 5 subtables for 0..4 preceding consecutive '1' bits + * index: 256*(number of preceding '1' bits) + (next byte to stuff) + * value: bit 9.. 0 = result bits + * bit 12..10 = number of trailing '1' bits in result + * bit 14..13 = number of bits added by stuffing + */ +static u16 stufftab[5 * 256] = { +// previous 1s = 0: + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, + 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x201f, + 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, + 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x203e, 0x205f, + 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, + 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x209f, + 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, + 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x207c, 0x207d, 0x20be, 0x20df, + 0x0480, 0x0481, 0x0482, 0x0483, 0x0484, 0x0485, 0x0486, 0x0487, 0x0488, 0x0489, 0x048a, 0x048b, 0x048c, 0x048d, 0x048e, 0x048f, + 0x0490, 0x0491, 0x0492, 0x0493, 0x0494, 0x0495, 0x0496, 0x0497, 0x0498, 0x0499, 0x049a, 0x049b, 0x049c, 0x049d, 0x049e, 0x251f, + 0x04a0, 0x04a1, 0x04a2, 0x04a3, 0x04a4, 0x04a5, 0x04a6, 0x04a7, 0x04a8, 0x04a9, 0x04aa, 0x04ab, 0x04ac, 0x04ad, 0x04ae, 0x04af, + 0x04b0, 0x04b1, 0x04b2, 0x04b3, 0x04b4, 0x04b5, 0x04b6, 0x04b7, 0x04b8, 0x04b9, 0x04ba, 0x04bb, 0x04bc, 0x04bd, 0x253e, 0x255f, + 0x08c0, 0x08c1, 0x08c2, 0x08c3, 0x08c4, 0x08c5, 0x08c6, 0x08c7, 0x08c8, 0x08c9, 0x08ca, 0x08cb, 0x08cc, 0x08cd, 0x08ce, 0x08cf, + 0x08d0, 0x08d1, 0x08d2, 0x08d3, 0x08d4, 0x08d5, 0x08d6, 0x08d7, 0x08d8, 0x08d9, 0x08da, 0x08db, 0x08dc, 0x08dd, 0x08de, 0x299f, + 0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x0ce7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x0cef, + 0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x10f7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x2ddf, + +// previous 1s = 1: + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x200f, + 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x202f, + 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x204f, + 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x203e, 0x206f, + 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x208f, + 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x20af, + 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x20cf, + 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, 0x0078, 0x0079, 0x007a, 0x007b, 0x207c, 0x207d, 0x20be, 0x20ef, + 0x0480, 0x0481, 0x0482, 0x0483, 0x0484, 0x0485, 0x0486, 0x0487, 0x0488, 0x0489, 0x048a, 0x048b, 0x048c, 0x048d, 0x048e, 0x250f, + 0x0490, 0x0491, 0x0492, 0x0493, 0x0494, 0x0495, 0x0496, 0x0497, 0x0498, 0x0499, 0x049a, 0x049b, 0x049c, 0x049d, 0x049e, 0x252f, + 0x04a0, 0x04a1, 0x04a2, 0x04a3, 0x04a4, 0x04a5, 0x04a6, 0x04a7, 0x04a8, 0x04a9, 0x04aa, 0x04ab, 0x04ac, 0x04ad, 0x04ae, 0x254f, + 0x04b0, 0x04b1, 0x04b2, 0x04b3, 0x04b4, 0x04b5, 0x04b6, 0x04b7, 0x04b8, 0x04b9, 0x04ba, 0x04bb, 0x04bc, 0x04bd, 0x253e, 0x256f, + 0x08c0, 0x08c1, 0x08c2, 0x08c3, 0x08c4, 0x08c5, 0x08c6, 0x08c7, 0x08c8, 0x08c9, 0x08ca, 0x08cb, 0x08cc, 0x08cd, 0x08ce, 0x298f, + 0x08d0, 0x08d1, 0x08d2, 0x08d3, 0x08d4, 0x08d5, 0x08d6, 0x08d7, 0x08d8, 0x08d9, 0x08da, 0x08db, 0x08dc, 0x08dd, 0x08de, 0x29af, + 0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x0ce7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x2dcf, + 0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x10f7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x31ef, + +// previous 1s = 2: + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x2007, 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x2017, + 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x2027, 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x2037, + 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x2047, 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x2057, + 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x2067, 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x203e, 0x2077, + 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x2087, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x2097, + 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x20a7, 0x0058, 0x0059, 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x20b7, + 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x20c7, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, 0x006e, 0x20d7, + 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x20e7, 0x0078, 0x0079, 0x007a, 0x007b, 0x207c, 0x207d, 0x20be, 0x20f7, + 0x0480, 0x0481, 0x0482, 0x0483, 0x0484, 0x0485, 0x0486, 0x2507, 0x0488, 0x0489, 0x048a, 0x048b, 0x048c, 0x048d, 0x048e, 0x2517, + 0x0490, 0x0491, 0x0492, 0x0493, 0x0494, 0x0495, 0x0496, 0x2527, 0x0498, 0x0499, 0x049a, 0x049b, 0x049c, 0x049d, 0x049e, 0x2537, + 0x04a0, 0x04a1, 0x04a2, 0x04a3, 0x04a4, 0x04a5, 0x04a6, 0x2547, 0x04a8, 0x04a9, 0x04aa, 0x04ab, 0x04ac, 0x04ad, 0x04ae, 0x2557, + 0x04b0, 0x04b1, 0x04b2, 0x04b3, 0x04b4, 0x04b5, 0x04b6, 0x2567, 0x04b8, 0x04b9, 0x04ba, 0x04bb, 0x04bc, 0x04bd, 0x253e, 0x2577, + 0x08c0, 0x08c1, 0x08c2, 0x08c3, 0x08c4, 0x08c5, 0x08c6, 0x2987, 0x08c8, 0x08c9, 0x08ca, 0x08cb, 0x08cc, 0x08cd, 0x08ce, 0x2997, + 0x08d0, 0x08d1, 0x08d2, 0x08d3, 0x08d4, 0x08d5, 0x08d6, 0x29a7, 0x08d8, 0x08d9, 0x08da, 0x08db, 0x08dc, 0x08dd, 0x08de, 0x29b7, + 0x0ce0, 0x0ce1, 0x0ce2, 0x0ce3, 0x0ce4, 0x0ce5, 0x0ce6, 0x2dc7, 0x0ce8, 0x0ce9, 0x0cea, 0x0ceb, 0x0cec, 0x0ced, 0x0cee, 0x2dd7, + 0x10f0, 0x10f1, 0x10f2, 0x10f3, 0x10f4, 0x10f5, 0x10f6, 0x31e7, 0x20f8, 0x20f9, 0x20fa, 0x20fb, 0x257c, 0x257d, 0x29be, 0x41f7, + +// previous 1s = 3: + 0x0000, 0x0001, 0x0002, 0x2003, 0x0004, 0x0005, 0x0006, 0x200b, 0x0008, 0x0009, 0x000a, 0x2013, 0x000c, 0x000d, 0x000e, 0x201b, + 0x0010, 0x0011, 0x0012, 0x2023, 0x0014, 0x0015, 0x0016, 0x202b, 0x0018, 0x0019, 0x001a, 0x2033, 0x001c, 0x001d, 0x001e, 0x203b, + 0x0020, 0x0021, 0x0022, 0x2043, 0x0024, 0x0025, 0x0026, 0x204b, 0x0028, 0x0029, 0x002a, 0x2053, 0x002c, 0x002d, 0x002e, 0x205b, + 0x0030, 0x0031, 0x0032, 0x2063, 0x0034, 0x0035, 0x0036, 0x206b, 0x0038, 0x0039, 0x003a, 0x2073, 0x003c, 0x003d, 0x203e, 0x207b, + 0x0040, 0x0041, 0x0042, 0x2083, 0x0044, 0x0045, 0x0046, 0x208b, 0x0048, 0x0049, 0x004a, 0x2093, 0x004c, 0x004d, 0x004e, 0x209b, + 0x0050, 0x0051, 0x0052, 0x20a3, 0x0054, 0x0055, 0x0056, 0x20ab, 0x0058, 0x0059, 0x005a, 0x20b3, 0x005c, 0x005d, 0x005e, 0x20bb, + 0x0060, 0x0061, 0x0062, 0x20c3, 0x0064, 0x0065, 0x0066, 0x20cb, 0x0068, 0x0069, 0x006a, 0x20d3, 0x006c, 0x006d, 0x006e, 0x20db, + 0x0070, 0x0071, 0x0072, 0x20e3, 0x0074, 0x0075, 0x0076, 0x20eb, 0x0078, 0x0079, 0x007a, 0x20f3, 0x207c, 0x207d, 0x20be, 0x40fb, + 0x0480, 0x0481, 0x0482, 0x2503, 0x0484, 0x0485, 0x0486, 0x250b, 0x0488, 0x0489, 0x048a, 0x2513, 0x048c, 0x048d, 0x048e, 0x251b, + 0x0490, 0x0491, 0x0492, 0x2523, 0x0494, 0x0495, 0x0496, 0x252b, 0x0498, 0x0499, 0x049a, 0x2533, 0x049c, 0x049d, 0x049e, 0x253b, + 0x04a0, 0x04a1, 0x04a2, 0x2543, 0x04a4, 0x04a5, 0x04a6, 0x254b, 0x04a8, 0x04a9, 0x04aa, 0x2553, 0x04ac, 0x04ad, 0x04ae, 0x255b, + 0x04b0, 0x04b1, 0x04b2, 0x2563, 0x04b4, 0x04b5, 0x04b6, 0x256b, 0x04b8, 0x04b9, 0x04ba, 0x2573, 0x04bc, 0x04bd, 0x253e, 0x257b, + 0x08c0, 0x08c1, 0x08c2, 0x2983, 0x08c4, 0x08c5, 0x08c6, 0x298b, 0x08c8, 0x08c9, 0x08ca, 0x2993, 0x08cc, 0x08cd, 0x08ce, 0x299b, + 0x08d0, 0x08d1, 0x08d2, 0x29a3, 0x08d4, 0x08d5, 0x08d6, 0x29ab, 0x08d8, 0x08d9, 0x08da, 0x29b3, 0x08dc, 0x08dd, 0x08de, 0x29bb, + 0x0ce0, 0x0ce1, 0x0ce2, 0x2dc3, 0x0ce4, 0x0ce5, 0x0ce6, 0x2dcb, 0x0ce8, 0x0ce9, 0x0cea, 0x2dd3, 0x0cec, 0x0ced, 0x0cee, 0x2ddb, + 0x10f0, 0x10f1, 0x10f2, 0x31e3, 0x10f4, 0x10f5, 0x10f6, 0x31eb, 0x20f8, 0x20f9, 0x20fa, 0x41f3, 0x257c, 0x257d, 0x29be, 0x46fb, + +// previous 1s = 4: + 0x0000, 0x2001, 0x0002, 0x2005, 0x0004, 0x2009, 0x0006, 0x200d, 0x0008, 0x2011, 0x000a, 0x2015, 0x000c, 0x2019, 0x000e, 0x201d, + 0x0010, 0x2021, 0x0012, 0x2025, 0x0014, 0x2029, 0x0016, 0x202d, 0x0018, 0x2031, 0x001a, 0x2035, 0x001c, 0x2039, 0x001e, 0x203d, + 0x0020, 0x2041, 0x0022, 0x2045, 0x0024, 0x2049, 0x0026, 0x204d, 0x0028, 0x2051, 0x002a, 0x2055, 0x002c, 0x2059, 0x002e, 0x205d, + 0x0030, 0x2061, 0x0032, 0x2065, 0x0034, 0x2069, 0x0036, 0x206d, 0x0038, 0x2071, 0x003a, 0x2075, 0x003c, 0x2079, 0x203e, 0x407d, + 0x0040, 0x2081, 0x0042, 0x2085, 0x0044, 0x2089, 0x0046, 0x208d, 0x0048, 0x2091, 0x004a, 0x2095, 0x004c, 0x2099, 0x004e, 0x209d, + 0x0050, 0x20a1, 0x0052, 0x20a5, 0x0054, 0x20a9, 0x0056, 0x20ad, 0x0058, 0x20b1, 0x005a, 0x20b5, 0x005c, 0x20b9, 0x005e, 0x20bd, + 0x0060, 0x20c1, 0x0062, 0x20c5, 0x0064, 0x20c9, 0x0066, 0x20cd, 0x0068, 0x20d1, 0x006a, 0x20d5, 0x006c, 0x20d9, 0x006e, 0x20dd, + 0x0070, 0x20e1, 0x0072, 0x20e5, 0x0074, 0x20e9, 0x0076, 0x20ed, 0x0078, 0x20f1, 0x007a, 0x20f5, 0x207c, 0x40f9, 0x20be, 0x417d, + 0x0480, 0x2501, 0x0482, 0x2505, 0x0484, 0x2509, 0x0486, 0x250d, 0x0488, 0x2511, 0x048a, 0x2515, 0x048c, 0x2519, 0x048e, 0x251d, + 0x0490, 0x2521, 0x0492, 0x2525, 0x0494, 0x2529, 0x0496, 0x252d, 0x0498, 0x2531, 0x049a, 0x2535, 0x049c, 0x2539, 0x049e, 0x253d, + 0x04a0, 0x2541, 0x04a2, 0x2545, 0x04a4, 0x2549, 0x04a6, 0x254d, 0x04a8, 0x2551, 0x04aa, 0x2555, 0x04ac, 0x2559, 0x04ae, 0x255d, + 0x04b0, 0x2561, 0x04b2, 0x2565, 0x04b4, 0x2569, 0x04b6, 0x256d, 0x04b8, 0x2571, 0x04ba, 0x2575, 0x04bc, 0x2579, 0x253e, 0x467d, + 0x08c0, 0x2981, 0x08c2, 0x2985, 0x08c4, 0x2989, 0x08c6, 0x298d, 0x08c8, 0x2991, 0x08ca, 0x2995, 0x08cc, 0x2999, 0x08ce, 0x299d, + 0x08d0, 0x29a1, 0x08d2, 0x29a5, 0x08d4, 0x29a9, 0x08d6, 0x29ad, 0x08d8, 0x29b1, 0x08da, 0x29b5, 0x08dc, 0x29b9, 0x08de, 0x29bd, + 0x0ce0, 0x2dc1, 0x0ce2, 0x2dc5, 0x0ce4, 0x2dc9, 0x0ce6, 0x2dcd, 0x0ce8, 0x2dd1, 0x0cea, 0x2dd5, 0x0cec, 0x2dd9, 0x0cee, 0x2ddd, + 0x10f0, 0x31e1, 0x10f2, 0x31e5, 0x10f4, 0x31e9, 0x10f6, 0x31ed, 0x20f8, 0x41f1, 0x20fa, 0x41f5, 0x257c, 0x46f9, 0x29be, 0x4b7d +}; + +/* hdlc_bitstuff_byte + * perform HDLC bitstuffing for one input byte (8 bits, LSB first) + * parameters: + * cin input byte + * ones number of trailing '1' bits in result before this step + * iwb pointer to output buffer structure (write semaphore must be held) + * return value: + * number of trailing '1' bits in result after this step + */ + +static inline int hdlc_bitstuff_byte(struct isowbuf_t *iwb, unsigned char cin, + int ones) +{ + u16 stuff; + int shiftinc, newones; + + /* get stuffing information for input byte + * value: bit 9.. 0 = result bits + * bit 12..10 = number of trailing '1' bits in result + * bit 14..13 = number of bits added by stuffing + */ + stuff = stufftab[256 * ones + cin]; + shiftinc = (stuff >> 13) & 3; + newones = (stuff >> 10) & 7; + stuff &= 0x3ff; + + /* append stuffed byte to output stream */ + isowbuf_putbits(iwb, stuff, 8 + shiftinc); + return newones; +} + +/* hdlc_buildframe + * Perform HDLC framing with bitstuffing on a byte buffer + * The input buffer is regarded as a sequence of bits, starting with the least + * significant bit of the first byte and ending with the most significant bit + * of the last byte. A 16 bit FCS is appended as defined by RFC 1662. + * Whenever five consecutive '1' bits appear in the resulting bit sequence, a + * '0' bit is inserted after them. + * The resulting bit string and a closing flag pattern (PPP_FLAG, '01111110') + * are appended to the output buffer starting at the given bit position, which + * is assumed to already contain a leading flag. + * The output buffer must have sufficient length; count + count/5 + 6 bytes + * starting at *out are safe and are verified to be present. + * parameters: + * in input buffer + * count number of bytes in input buffer + * iwb pointer to output buffer structure (write semaphore must be held) + * return value: + * position of end of packet in output buffer on success, + * -EAGAIN if write semaphore busy or buffer full + */ + +static inline int hdlc_buildframe(struct isowbuf_t *iwb, + unsigned char *in, int count) +{ + int ones; + u16 fcs; + int end; + unsigned char c; + + if (isowbuf_freebytes(iwb) < count + count / 5 + 6 || + !isowbuf_startwrite(iwb)) { + dbg(DEBUG_ISO, "%s: %d bytes free -> -EAGAIN", + __func__, isowbuf_freebytes(iwb)); + return -EAGAIN; + } + + dump_bytes(DEBUG_STREAM, "snd data", in, count); + + /* bitstuff and checksum input data */ + fcs = PPP_INITFCS; + ones = 0; + while (count-- > 0) { + c = *in++; + ones = hdlc_bitstuff_byte(iwb, c, ones); + fcs = crc_ccitt_byte(fcs, c); + } + + /* bitstuff and append FCS (complemented, least significant byte first) */ + fcs ^= 0xffff; + ones = hdlc_bitstuff_byte(iwb, fcs & 0x00ff, ones); + ones = hdlc_bitstuff_byte(iwb, (fcs >> 8) & 0x00ff, ones); + + /* put closing flag and repeat byte for flag idle */ + isowbuf_putflag(iwb); + end = isowbuf_donewrite(iwb); + dump_bytes(DEBUG_STREAM_DUMP, "isowbuf", iwb->data, end + 1); + return end; +} + +/* trans_buildframe + * Append a block of 'transparent' data to the output buffer, + * inverting the bytes. + * The output buffer must have sufficient length; count bytes + * starting at *out are safe and are verified to be present. + * parameters: + * in input buffer + * count number of bytes in input buffer + * iwb pointer to output buffer structure (write semaphore must be held) + * return value: + * position of end of packet in output buffer on success, + * -EAGAIN if write semaphore busy or buffer full + */ + +static inline int trans_buildframe(struct isowbuf_t *iwb, + unsigned char *in, int count) +{ + int write; + unsigned char c; + + if (unlikely(count <= 0)) + return atomic_read(&iwb->write); /* better ideas? */ + + if (isowbuf_freebytes(iwb) < count || + !isowbuf_startwrite(iwb)) { + dbg(DEBUG_ISO, "can't put %d bytes", count); + return -EAGAIN; + } + + dbg(DEBUG_STREAM, "put %d bytes", count); + write = atomic_read(&iwb->write); + do { + c = gigaset_invtab[*in++]; + iwb->data[write++] = c; + write %= BAS_OUTBUFSIZE; + } while (--count > 0); + atomic_set(&iwb->write, write); + iwb->idle = c; + + return isowbuf_donewrite(iwb); +} + +int gigaset_isoc_buildframe(struct bc_state *bcs, unsigned char *in, int len) +{ + int result; + + switch (bcs->proto2) { + case ISDN_PROTO_L2_HDLC: + result = hdlc_buildframe(bcs->hw.bas->isooutbuf, in, len); + dbg(DEBUG_ISO, "%s: %d bytes HDLC -> %d", __func__, len, result); + break; + default: /* assume transparent */ + result = trans_buildframe(bcs->hw.bas->isooutbuf, in, len); + dbg(DEBUG_ISO, "%s: %d bytes trans -> %d", __func__, len, result); + } + return result; +} + +/* hdlc_putbyte + * append byte c to current skb of B channel structure *bcs, updating fcs + */ +static inline void hdlc_putbyte(unsigned char c, struct bc_state *bcs) +{ + bcs->fcs = crc_ccitt_byte(bcs->fcs, c); + if (unlikely(bcs->skb == NULL)) { + /* skipping */ + return; + } + if (unlikely(bcs->skb->len == SBUFSIZE)) { + warn("received oversized packet discarded"); + bcs->hw.bas->giants++; + dev_kfree_skb_any(bcs->skb); + bcs->skb = NULL; + return; + } + *gigaset_skb_put_quick(bcs->skb, 1) = c; +} + +/* hdlc_flush + * drop partial HDLC data packet + */ +static inline void hdlc_flush(struct bc_state *bcs) +{ + /* clear skb or allocate new if not skipping */ + if (likely(bcs->skb != NULL)) + skb_trim(bcs->skb, 0); + else if (!bcs->ignore) { + if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL) + skb_reserve(bcs->skb, HW_HDR_LEN); + else + err("could not allocate skb"); + } + + /* reset packet state */ + bcs->fcs = PPP_INITFCS; +} + +/* hdlc_done + * process completed HDLC data packet + */ +static inline void hdlc_done(struct bc_state *bcs) +{ + struct sk_buff *procskb; + + if (unlikely(bcs->ignore)) { + bcs->ignore--; + hdlc_flush(bcs); + return; + } + + if ((procskb = bcs->skb) == NULL) { + /* previous error */ + dbg(DEBUG_ISO, "%s: skb=NULL", __func__); + gigaset_rcv_error(NULL, bcs->cs, bcs); + } else if (procskb->len < 2) { + notice("received short frame (%d octets)", procskb->len); + bcs->hw.bas->runts++; + gigaset_rcv_error(procskb, bcs->cs, bcs); + } else if (bcs->fcs != PPP_GOODFCS) { + notice("frame check error (0x%04x)", bcs->fcs); + bcs->hw.bas->fcserrs++; + gigaset_rcv_error(procskb, bcs->cs, bcs); + } else { + procskb->len -= 2; /* subtract FCS */ + procskb->tail -= 2; + dbg(DEBUG_ISO, + "%s: good frame (%d octets)", __func__, procskb->len); + dump_bytes(DEBUG_STREAM, + "rcv data", procskb->data, procskb->len); + bcs->hw.bas->goodbytes += procskb->len; + gigaset_rcv_skb(procskb, bcs->cs, bcs); + } + + if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL) + skb_reserve(bcs->skb, HW_HDR_LEN); + else + err("could not allocate skb"); + bcs->fcs = PPP_INITFCS; +} + +/* hdlc_frag + * drop HDLC data packet with non-integral last byte + */ +static inline void hdlc_frag(struct bc_state *bcs, unsigned inbits) +{ + if (unlikely(bcs->ignore)) { + bcs->ignore--; + hdlc_flush(bcs); + return; + } + + notice("received partial byte (%d bits)", inbits); + bcs->hw.bas->alignerrs++; + gigaset_rcv_error(bcs->skb, bcs->cs, bcs); + + if ((bcs->skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN)) != NULL) + skb_reserve(bcs->skb, HW_HDR_LEN); + else + err("could not allocate skb"); + bcs->fcs = PPP_INITFCS; +} + +/* bit counts lookup table for HDLC bit unstuffing + * index: input byte + * value: bit 0..3 = number of consecutive '1' bits starting from LSB + * bit 4..6 = number of consecutive '1' bits starting from MSB + * (replacing 8 by 7 to make it fit; the algorithm won't care) + * bit 7 set if there are 5 or more "interior" consecutive '1' bits + */ +static unsigned char bitcounts[256] = { + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x04, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x05, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x04, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x80, 0x06, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x04, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x05, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x04, + 0x00, 0x01, 0x00, 0x02, 0x00, 0x01, 0x00, 0x03, 0x00, 0x01, 0x00, 0x02, 0x80, 0x81, 0x80, 0x07, + 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x13, 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x14, + 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x13, 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x15, + 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x13, 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x14, + 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x10, 0x13, 0x10, 0x11, 0x10, 0x12, 0x10, 0x11, 0x90, 0x16, + 0x20, 0x21, 0x20, 0x22, 0x20, 0x21, 0x20, 0x23, 0x20, 0x21, 0x20, 0x22, 0x20, 0x21, 0x20, 0x24, + 0x20, 0x21, 0x20, 0x22, 0x20, 0x21, 0x20, 0x23, 0x20, 0x21, 0x20, 0x22, 0x20, 0x21, 0x20, 0x25, + 0x30, 0x31, 0x30, 0x32, 0x30, 0x31, 0x30, 0x33, 0x30, 0x31, 0x30, 0x32, 0x30, 0x31, 0x30, 0x34, + 0x40, 0x41, 0x40, 0x42, 0x40, 0x41, 0x40, 0x43, 0x50, 0x51, 0x50, 0x52, 0x60, 0x61, 0x70, 0x78 +}; + +/* hdlc_unpack + * perform HDLC frame processing (bit unstuffing, flag detection, FCS calculation) + * on a sequence of received data bytes (8 bits each, LSB first) + * pass on successfully received, complete frames as SKBs via gigaset_rcv_skb + * notify of errors via gigaset_rcv_error + * tally frames, errors etc. in BC structure counters + * parameters: + * src received data + * count number of received bytes + * bcs receiving B channel structure + */ +static inline void hdlc_unpack(unsigned char *src, unsigned count, + struct bc_state *bcs) +{ + struct bas_bc_state *ubc; + int inputstate; + unsigned seqlen, inbyte, inbits; + + IFNULLRET(bcs); + ubc = bcs->hw.bas; + IFNULLRET(ubc); + + /* load previous state: + * inputstate = set of flag bits: + * - INS_flag_hunt: no complete opening flag received since connection setup or last abort + * - INS_have_data: at least one complete data byte received since last flag + * seqlen = number of consecutive '1' bits in last 7 input stream bits (0..7) + * inbyte = accumulated partial data byte (if !INS_flag_hunt) + * inbits = number of valid bits in inbyte, starting at LSB (0..6) + */ + inputstate = bcs->inputstate; + seqlen = ubc->seqlen; + inbyte = ubc->inbyte; + inbits = ubc->inbits; + + /* bit unstuffing a byte a time + * Take your time to understand this; it's straightforward but tedious. + * The "bitcounts" lookup table is used to speed up the counting of + * leading and trailing '1' bits. + */ + while (count--) { + unsigned char c = *src++; + unsigned char tabentry = bitcounts[c]; + unsigned lead1 = tabentry & 0x0f; + unsigned trail1 = (tabentry >> 4) & 0x0f; + + seqlen += lead1; + + if (unlikely(inputstate & INS_flag_hunt)) { + if (c == PPP_FLAG) { + /* flag-in-one */ + inputstate &= ~(INS_flag_hunt | INS_have_data); + inbyte = 0; + inbits = 0; + } else if (seqlen == 6 && trail1 != 7) { + /* flag completed & not followed by abort */ + inputstate &= ~(INS_flag_hunt | INS_have_data); + inbyte = c >> (lead1 + 1); + inbits = 7 - lead1; + if (trail1 >= 8) { + /* interior stuffing: omitting the MSB handles most cases */ + inbits--; + /* correct the incorrectly handled cases individually */ + switch (c) { + case 0xbe: + inbyte = 0x3f; + break; + } + } + } + /* else: continue flag-hunting */ + } else if (likely(seqlen < 5 && trail1 < 7)) { + /* streamlined case: 8 data bits, no stuffing */ + inbyte |= c << inbits; + hdlc_putbyte(inbyte & 0xff, bcs); + inputstate |= INS_have_data; + inbyte >>= 8; + /* inbits unchanged */ + } else if (likely(seqlen == 6 && inbits == 7 - lead1 && + trail1 + 1 == inbits && + !(inputstate & INS_have_data))) { + /* streamlined case: flag idle - state unchanged */ + } else if (unlikely(seqlen > 6)) { + /* abort sequence */ + ubc->aborts++; + hdlc_flush(bcs); + inputstate |= INS_flag_hunt; + } else if (seqlen == 6) { + /* closing flag, including (6 - lead1) '1's and one '0' from inbits */ + if (inbits > 7 - lead1) { + hdlc_frag(bcs, inbits + lead1 - 7); + inputstate &= ~INS_have_data; + } else { + if (inbits < 7 - lead1) + ubc->stolen0s ++; + if (inputstate & INS_have_data) { + hdlc_done(bcs); + inputstate &= ~INS_have_data; + } + } + + if (c == PPP_FLAG) { + /* complete flag, LSB overlaps preceding flag */ + ubc->shared0s ++; + inbits = 0; + inbyte = 0; + } else if (trail1 != 7) { + /* remaining bits */ + inbyte = c >> (lead1 + 1); + inbits = 7 - lead1; + if (trail1 >= 8) { + /* interior stuffing: omitting the MSB handles most cases */ + inbits--; + /* correct the incorrectly handled cases individually */ + switch (c) { + case 0xbe: + inbyte = 0x3f; + break; + } + } + } else { + /* abort sequence follows, skb already empty anyway */ + ubc->aborts++; + inputstate |= INS_flag_hunt; + } + } else { /* (seqlen < 6) && (seqlen == 5 || trail1 >= 7) */ + + if (c == PPP_FLAG) { + /* complete flag */ + if (seqlen == 5) + ubc->stolen0s++; + if (inbits) { + hdlc_frag(bcs, inbits); + inbits = 0; + inbyte = 0; + } else if (inputstate & INS_have_data) + hdlc_done(bcs); + inputstate &= ~INS_have_data; + } else if (trail1 == 7) { + /* abort sequence */ + ubc->aborts++; + hdlc_flush(bcs); + inputstate |= INS_flag_hunt; + } else { + /* stuffed data */ + if (trail1 < 7) { /* => seqlen == 5 */ + /* stuff bit at position lead1, no interior stuffing */ + unsigned char mask = (1 << lead1) - 1; + c = (c & mask) | ((c & ~mask) >> 1); + inbyte |= c << inbits; + inbits += 7; + } else if (seqlen < 5) { /* trail1 >= 8 */ + /* interior stuffing: omitting the MSB handles most cases */ + /* correct the incorrectly handled cases individually */ + switch (c) { + case 0xbe: + c = 0x7e; + break; + } + inbyte |= c << inbits; + inbits += 7; + } else { /* seqlen == 5 && trail1 >= 8 */ + + /* stuff bit at lead1 *and* interior stuffing */ + switch (c) { /* unstuff individually */ + case 0x7d: + c = 0x3f; + break; + case 0xbe: + c = 0x3f; + break; + case 0x3e: + c = 0x1f; + break; + case 0x7c: + c = 0x3e; + break; + } + inbyte |= c << inbits; + inbits += 6; + } + if (inbits >= 8) { + inbits -= 8; + hdlc_putbyte(inbyte & 0xff, bcs); + inputstate |= INS_have_data; + inbyte >>= 8; + } + } + } + seqlen = trail1 & 7; + } + + /* save new state */ + bcs->inputstate = inputstate; + ubc->seqlen = seqlen; + ubc->inbyte = inbyte; + ubc->inbits = inbits; +} + +/* trans_receive + * pass on received USB frame transparently as SKB via gigaset_rcv_skb + * invert bytes + * tally frames, errors etc. in BC structure counters + * parameters: + * src received data + * count number of received bytes + * bcs receiving B channel structure + */ +static inline void trans_receive(unsigned char *src, unsigned count, + struct bc_state *bcs) +{ + struct sk_buff *skb; + int dobytes; + unsigned char *dst; + + if (unlikely(bcs->ignore)) { + bcs->ignore--; + hdlc_flush(bcs); + return; + } + if (unlikely((skb = bcs->skb) == NULL)) { + bcs->skb = skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN); + if (!skb) { + err("could not allocate skb"); + return; + } + skb_reserve(skb, HW_HDR_LEN); + } + bcs->hw.bas->goodbytes += skb->len; + dobytes = TRANSBUFSIZE - skb->len; + while (count > 0) { + dst = skb_put(skb, count < dobytes ? count : dobytes); + while (count > 0 && dobytes > 0) { + *dst++ = gigaset_invtab[*src++]; + count--; + dobytes--; + } + if (dobytes == 0) { + gigaset_rcv_skb(skb, bcs->cs, bcs); + bcs->skb = skb = dev_alloc_skb(SBUFSIZE + HW_HDR_LEN); + if (!skb) { + err("could not allocate skb"); + return; + } + skb_reserve(bcs->skb, HW_HDR_LEN); + dobytes = TRANSBUFSIZE; + } + } +} + +void gigaset_isoc_receive(unsigned char *src, unsigned count, struct bc_state *bcs) +{ + switch (bcs->proto2) { + case ISDN_PROTO_L2_HDLC: + hdlc_unpack(src, count, bcs); + break; + default: /* assume transparent */ + trans_receive(src, count, bcs); + } +} + +/* == data input =========================================================== */ + +static void cmd_loop(unsigned char *src, int numbytes, struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + unsigned cbytes = cs->cbytes; + + while (numbytes--) { + /* copy next character, check for end of line */ + switch (cs->respdata[cbytes] = *src++) { + case '\r': + case '\n': + /* end of line */ + dbg(DEBUG_TRANSCMD, "%s: End of Command (%d Bytes)", + __func__, cbytes); + cs->cbytes = cbytes; + gigaset_handle_modem_response(cs); + cbytes = 0; + break; + default: + /* advance in line buffer, checking for overflow */ + if (cbytes < MAX_RESP_SIZE - 1) + cbytes++; + else + warn("response too large"); + } + } + + /* save state */ + cs->cbytes = cbytes; +} + + +/* process a block of data received through the control channel + */ +void gigaset_isoc_input(struct inbuf_t *inbuf) +{ + struct cardstate *cs = inbuf->cs; + unsigned tail, head, numbytes; + unsigned char *src; + + head = atomic_read(&inbuf->head); + while (head != (tail = atomic_read(&inbuf->tail))) { + dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail); + if (head > tail) + tail = RBUFSIZE; + src = inbuf->data + head; + numbytes = tail - head; + dbg(DEBUG_INTR, "processing %u bytes", numbytes); + + if (atomic_read(&cs->mstate) == MS_LOCKED) { + gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response", + numbytes, src, 0); + gigaset_if_receive(inbuf->cs, src, numbytes); + } else { + gigaset_dbg_buffer(DEBUG_CMD, "received response", + numbytes, src, 0); + cmd_loop(src, numbytes, inbuf); + } + + head += numbytes; + if (head == RBUFSIZE) + head = 0; + dbg(DEBUG_INTR, "setting head to %u", head); + atomic_set(&inbuf->head, head); + } +} + + +/* == data output ========================================================== */ + +/* gigaset_send_skb + * called by common.c to queue an skb for sending + * and start transmission if necessary + * parameters: + * B Channel control structure + * skb + * return value: + * number of bytes accepted for sending + * (skb->len if ok, 0 if out of buffer space) + * or error code (< 0, eg. -EINVAL) + */ +int gigaset_isoc_send_skb(struct bc_state *bcs, struct sk_buff *skb) +{ + int len; + + IFNULLRETVAL(bcs, -EFAULT); + IFNULLRETVAL(skb, -EFAULT); + len = skb->len; + + skb_queue_tail(&bcs->squeue, skb); + dbg(DEBUG_ISO, + "%s: skb queued, qlen=%d", __func__, skb_queue_len(&bcs->squeue)); + + /* tasklet submits URB if necessary */ + tasklet_schedule(&bcs->hw.bas->sent_tasklet); + + return len; /* ok so far */ +} diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c new file mode 100644 index 00000000000..c6915fa2be6 --- /dev/null +++ b/drivers/isdn/gigaset/proc.c @@ -0,0 +1,81 @@ +/* + * Stuff used by all variants of the driver + * + * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>, + * Hansjoerg Lipp <hjlipp@web.de>, + * Tilman Schmidt <tilman@imap.cc>. + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: proc.c,v 1.5.2.13 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/ctype.h> + +static ssize_t show_cidmode(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct cardstate *cs = usb_get_intfdata(intf); + return sprintf(buf, "%d\n", atomic_read(&cs->cidmode)); // FIXME use scnprintf for 13607 bit architectures (if PAGE_SIZE==4096) +} + +static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct cardstate *cs = usb_get_intfdata(intf); + long int value; + char *end; + + value = simple_strtol(buf, &end, 0); + while (*end) + if (!isspace(*end++)) + return -EINVAL; + if (value < 0 || value > 1) + return -EINVAL; + + if (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + cs->waiting = 1; + if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE, + NULL, value, NULL)) { + cs->waiting = 0; + up(&cs->sem); + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling PROC_CIDMODE"); + gigaset_schedule_event(cs); + + wait_event(cs->waitqueue, !cs->waiting); + + up(&cs->sem); + + return count; +} + +static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode); + +/* free sysfs for device */ +void gigaset_free_dev_sysfs(struct usb_interface *interface) +{ + dbg(DEBUG_INIT, "removing sysfs entries"); + device_remove_file(&interface->dev, &dev_attr_cidmode); +} +EXPORT_SYMBOL_GPL(gigaset_free_dev_sysfs); + +/* initialize sysfs for device */ +void gigaset_init_dev_sysfs(struct usb_interface *interface) +{ + dbg(DEBUG_INIT, "setting up sysfs"); + device_create_file(&interface->dev, &dev_attr_cidmode); +} +EXPORT_SYMBOL_GPL(gigaset_init_dev_sysfs); diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c new file mode 100644 index 00000000000..323fc7349de --- /dev/null +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -0,0 +1,1008 @@ +/* + * USB driver for Gigaset 307x directly or using M105 Data. + * + * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de> + * and Hansjoerg Lipp <hjlipp@web.de>. + * + * This driver was derived from the USB skeleton driver by + * Greg Kroah-Hartman <greg@kroah.com> + * + * ===================================================================== + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" + +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/module.h> +#include <linux/moduleparam.h> + +/* Version Information */ +#define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>" +#define DRIVER_DESC "USB Driver for Gigaset 307x using M105" + +/* Module parameters */ + +static int startmode = SM_ISDN; +static int cidmode = 1; + +module_param(startmode, int, S_IRUGO); +module_param(cidmode, int, S_IRUGO); +MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); +MODULE_PARM_DESC(cidmode, "Call-ID mode"); + +#define GIGASET_MINORS 1 +#define GIGASET_MINOR 8 +#define GIGASET_MODULENAME "usb_gigaset" +#define GIGASET_DEVFSNAME "gig/usb/" +#define GIGASET_DEVNAME "ttyGU" + +#define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256 + +/* Values for the Gigaset M105 Data */ +#define USB_M105_VENDOR_ID 0x0681 +#define USB_M105_PRODUCT_ID 0x0009 + +/* table of devices that work with this driver */ +static struct usb_device_id gigaset_table [] = { + { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, gigaset_table); + +/* Get a minor range for your devices from the usb maintainer */ +#define USB_SKEL_MINOR_BASE 200 + + +/* + * Control requests (empty fields: 00) + * + * RT|RQ|VALUE|INDEX|LEN |DATA + * In: + * C1 08 01 + * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:? + * C1 0F ll ll + * Get device information/status (llll: 0x200 and 0x40 seen). + * Real size: I only saw MIN(llll,0x64). + * Contents: seems to be always the same... + * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes) + * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0" + * rest: ? + * Out: + * 41 11 + * Initialize/reset device ? + * 41 00 xx 00 + * ? (xx=00 or 01; 01 on start, 00 on close) + * 41 07 vv mm + * Set/clear flags vv=value, mm=mask (see RQ 08) + * 41 12 xx + * Used before the following configuration requests are issued + * (with xx=0x0f). I've seen other values<0xf, though. + * 41 01 xx xx + * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1. + * 41 03 ps bb + * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity + * [ 0x30: m, 0x40: s ] + * [s: 0: 1 stop bit; 1: 1.5; 2: 2] + * bb: bits/byte (seen 7 and 8) + * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00 + * ?? + * Initialization: 01, 40, 00, 00 + * Open device: 00 40, 00, 00 + * yy and zz seem to be equal, either 0x00 or 0x0a + * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80) + * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13 + * Used after every "configuration sequence" (RQ 12, RQs 01/03/13). + * xx is usually 0x00 but was 0x7e before starting data transfer + * in unimodem mode. So, this might be an array of characters that need + * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S. + * + * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two + * flags per packet. + */ + +static int gigaset_probe(struct usb_interface *interface, + const struct usb_device_id *id); +static void gigaset_disconnect(struct usb_interface *interface); + +static struct gigaset_driver *driver = NULL; +static struct cardstate *cardstate = NULL; + +/* usb specific object needed to register this driver with the usb subsystem */ +static struct usb_driver gigaset_usb_driver = { + .name = GIGASET_MODULENAME, + .probe = gigaset_probe, + .disconnect = gigaset_disconnect, + .id_table = gigaset_table, +}; + +struct usb_cardstate { + struct usb_device *udev; /* save off the usb device pointer */ + struct usb_interface *interface; /* the interface for this device */ + atomic_t busy; /* bulk output in progress */ + + /* Output buffer for commands (M105: and data)*/ + unsigned char *bulk_out_buffer; /* the buffer to send data */ + int bulk_out_size; /* the size of the send buffer */ + __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ + struct urb *bulk_out_urb; /* the urb used to transmit data */ + + /* Input buffer for command responses (M105: and data)*/ + int rcvbuf_size; /* the size of the receive buffer */ + struct urb *read_urb; /* the urb used to receive data */ + __u8 int_in_endpointAddr; /* the address of the bulk in endpoint */ + + char bchars[6]; /* req. 0x19 */ +}; + +struct usb_bc_state {}; + +static inline unsigned tiocm_to_gigaset(unsigned state) +{ + return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); +} + +#ifdef CONFIG_GIGASET_UNDOCREQ +/* WARNING: EXPERIMENTAL! */ +static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, + unsigned new_state) +{ + unsigned mask, val; + int r; + + mask = tiocm_to_gigaset(old_state ^ new_state); + val = tiocm_to_gigaset(new_state); + + dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); + r = usb_control_msg(cs->hw.usb->udev, + usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41, + (val & 0xff) | ((mask & 0xff) << 8), 0, + NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH + if (r < 0) + return r; + //.. + return 0; +} + +static int set_value(struct cardstate *cs, u8 req, u16 val) +{ + int r, r2; + + dbg(DEBUG_USBREQ, "request %02x (%04x)", (unsigned)req, (unsigned)val); + r = usb_control_msg(cs->hw.usb->udev, + usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x12, 0x41, + 0xf /*?*/, 0, + NULL, 0, 2000 /*?*/); /* no idea, what this does */ + if (r < 0) { + err("error %d on request 0x12", -r); + return r; + } + + r = usb_control_msg(cs->hw.usb->udev, + usb_sndctrlpipe(cs->hw.usb->udev, 0), req, 0x41, + val, 0, + NULL, 0, 2000 /*?*/); + if (r < 0) + err("error %d on request 0x%02x", -r, (unsigned)req); + + r2 = usb_control_msg(cs->hw.usb->udev, + usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, + 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/); + if (r2 < 0) + err("error %d on request 0x19", -r2); + + return r < 0 ? r : (r2 < 0 ? r2 : 0); +} + +/* WARNING: HIGHLY EXPERIMENTAL! */ +// don't use this in an interrupt/BH +static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) +{ + u16 val; + u32 rate; + + cflag &= CBAUD; + + switch (cflag) { + //FIXME more values? + case B300: rate = 300; break; + case B600: rate = 600; break; + case B1200: rate = 1200; break; + case B2400: rate = 2400; break; + case B4800: rate = 4800; break; + case B9600: rate = 9600; break; + case B19200: rate = 19200; break; + case B38400: rate = 38400; break; + case B57600: rate = 57600; break; + case B115200: rate = 115200; break; + default: + rate = 9600; + err("unsupported baudrate request 0x%x," + " using default of B9600", cflag); + } + + val = 0x383fff / rate + 1; + + return set_value(cs, 1, val); +} + +/* WARNING: HIGHLY EXPERIMENTAL! */ +// don't use this in an interrupt/BH +static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) +{ + u16 val = 0; + + /* set the parity */ + if (cflag & PARENB) + val |= (cflag & PARODD) ? 0x10 : 0x20; + + /* set the number of data bits */ + switch (cflag & CSIZE) { + case CS5: + val |= 5 << 8; break; + case CS6: + val |= 6 << 8; break; + case CS7: + val |= 7 << 8; break; + case CS8: + val |= 8 << 8; break; + default: + err("CSIZE was not CS5-CS8, using default of 8"); + val |= 8 << 8; + break; + } + + /* set the number of stop bits */ + if (cflag & CSTOPB) { + if ((cflag & CSIZE) == CS5) + val |= 1; /* 1.5 stop bits */ //FIXME is this okay? + else + val |= 2; /* 2 stop bits */ + } + + return set_value(cs, 3, val); +} + +#else +static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, + unsigned new_state) +{ + return -EINVAL; +} + +static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) +{ + return -EINVAL; +} + +static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) +{ + return -EINVAL; +} +#endif + + + /*================================================================================================================*/ +static int gigaset_init_bchannel(struct bc_state *bcs) +{ + /* nothing to do for M10x */ + gigaset_bchannel_up(bcs); + return 0; +} + +static int gigaset_close_bchannel(struct bc_state *bcs) +{ + /* nothing to do for M10x */ + gigaset_bchannel_down(bcs); + return 0; +} + +//void send_ack_to_LL(void *data); +static int write_modem(struct cardstate *cs); +static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb); + + +/* Handling of send queue. If there is already a skb opened, put data to + * the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue. + * This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler + * via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data. + */ +static void gigaset_modem_fill(unsigned long data) +{ + struct cardstate *cs = (struct cardstate *) data; + struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ + struct cmdbuf_t *cb; + unsigned long flags; + int again; + + dbg(DEBUG_OUTPUT, "modem_fill"); + + if (atomic_read(&cs->hw.usb->busy)) { + dbg(DEBUG_OUTPUT, "modem_fill: busy"); + return; + } + + do { + again = 0; + if (!bcs->tx_skb) { /* no skb is being sent */ + spin_lock_irqsave(&cs->cmdlock, flags); + cb = cs->cmdbuf; + spin_unlock_irqrestore(&cs->cmdlock, flags); + if (cb) { /* commands to send? */ + dbg(DEBUG_OUTPUT, "modem_fill: cb"); + if (send_cb(cs, cb) < 0) { + dbg(DEBUG_OUTPUT, + "modem_fill: send_cb failed"); + again = 1; /* no callback will be called! */ + } + } else { /* skbs to send? */ + bcs->tx_skb = skb_dequeue(&bcs->squeue); + if (bcs->tx_skb) + dbg(DEBUG_INTR, + "Dequeued skb (Adr: %lx)!", + (unsigned long) bcs->tx_skb); + } + } + + if (bcs->tx_skb) { + dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); + if (write_modem(cs) < 0) { + dbg(DEBUG_OUTPUT, + "modem_fill: write_modem failed"); + // FIXME should we tell the LL? + again = 1; /* no callback will be called! */ + } + } + } while (again); +} + +/** + * gigaset_read_int_callback + * + * It is called if the data was received from the device. This is almost similiar to + * the interrupt service routine in the serial device. + */ +static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) +{ + int resubmit = 0; + int r; + struct cardstate *cs; + unsigned numbytes; + unsigned char *src; + //unsigned long flags; + struct inbuf_t *inbuf; + + IFNULLRET(urb); + inbuf = (struct inbuf_t *) urb->context; + IFNULLRET(inbuf); + //spin_lock_irqsave(&inbuf->lock, flags); + cs = inbuf->cs; + IFNULLGOTO(cs, exit); + IFNULLGOTO(cardstate, exit); + + if (!atomic_read(&cs->connected)) { + err("%s: disconnected", __func__); + goto exit; + } + + if (!urb->status) { + numbytes = urb->actual_length; + + if (numbytes) { + src = inbuf->rcvbuf; + if (unlikely(*src)) + warn("%s: There was no leading 0, but 0x%02x!", + __func__, (unsigned) *src); + ++src; /* skip leading 0x00 */ + --numbytes; + if (gigaset_fill_inbuf(inbuf, src, numbytes)) { + dbg(DEBUG_INTR, "%s-->BH", __func__); + gigaset_schedule_event(inbuf->cs); + } + } else + dbg(DEBUG_INTR, "Received zero block length"); + resubmit = 1; + } else { + /* The urb might have been killed. */ + dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d", + __func__, urb->status); + if (urb->status != -ENOENT) /* not killed */ + resubmit = 1; + } +exit: + //spin_unlock_irqrestore(&inbuf->lock, flags); + if (resubmit) { + r = usb_submit_urb(urb, SLAB_ATOMIC); + if (r) + err("error %d when resubmitting urb.", -r); + } +} + + +/* This callback routine is called when data was transmitted to a B-Channel. + * Therefore it has to check if there is still data to transmit. This + * happens by calling modem_fill via task queue. + * + */ +static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) +{ + struct cardstate *cs = (struct cardstate *) urb->context; + + IFNULLRET(cs); +#ifdef CONFIG_GIGASET_DEBUG + if (!atomic_read(&cs->connected)) { + err("%s:not connected", __func__); + return; + } +#endif + if (urb->status) + err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems + are handeled by timeouts or network protocols */ + + atomic_set(&cs->hw.usb->busy, 0); + tasklet_schedule(&cs->write_tasklet); +} + +static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) +{ + struct cmdbuf_t *tcb; + unsigned long flags; + int count; + int status = -ENOENT; // FIXME + struct usb_cardstate *ucs = cs->hw.usb; + + do { + if (!cb->len) { + tcb = cb; + + spin_lock_irqsave(&cs->cmdlock, flags); + cs->cmdbytes -= cs->curlen; + dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left", + cs->curlen, cs->cmdbytes); + cs->cmdbuf = cb = cb->next; + if (cb) { + cb->prev = NULL; + cs->curlen = cb->len; + } else { + cs->lastcmdbuf = NULL; + cs->curlen = 0; + } + spin_unlock_irqrestore(&cs->cmdlock, flags); + + if (tcb->wake_tasklet) + tasklet_schedule(tcb->wake_tasklet); + kfree(tcb); + } + if (cb) { + count = min(cb->len, ucs->bulk_out_size); + usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, + usb_sndbulkpipe(ucs->udev, + ucs->bulk_out_endpointAddr & 0x0f), + cb->buf + cb->offset, count, + gigaset_write_bulk_callback, cs); + + cb->offset += count; + cb->len -= count; + atomic_set(&ucs->busy, 1); + dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count); + + status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); + if (status) { + atomic_set(&ucs->busy, 0); + err("could not submit urb (error %d).", + -status); + cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */ + } + } + } while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */ + + return status; +} + +/* Write string into transbuf and send it to modem. + */ +static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, + int len, struct tasklet_struct *wake_tasklet) +{ + struct cmdbuf_t *cb; + unsigned long flags; + + gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? + DEBUG_TRANSCMD : DEBUG_LOCKCMD, + "CMD Transmit", len, buf, 0); + + if (!atomic_read(&cs->connected)) { + err("%s: not connected", __func__); + return -ENODEV; + } + + if (len <= 0) + return 0; + + if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { + err("%s: out of memory", __func__); + return -ENOMEM; + } + + memcpy(cb->buf, buf, len); + cb->len = len; + cb->offset = 0; + cb->next = NULL; + cb->wake_tasklet = wake_tasklet; + + spin_lock_irqsave(&cs->cmdlock, flags); + cb->prev = cs->lastcmdbuf; + if (cs->lastcmdbuf) + cs->lastcmdbuf->next = cb; + else { + cs->cmdbuf = cb; + cs->curlen = len; + } + cs->cmdbytes += len; + cs->lastcmdbuf = cb; + spin_unlock_irqrestore(&cs->cmdlock, flags); + + tasklet_schedule(&cs->write_tasklet); + return len; +} + +static int gigaset_write_room(struct cardstate *cs) +{ + unsigned long flags; + unsigned bytes; + + spin_lock_irqsave(&cs->cmdlock, flags); + bytes = cs->cmdbytes; + spin_unlock_irqrestore(&cs->cmdlock, flags); + + return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0; +} + +static int gigaset_chars_in_buffer(struct cardstate *cs) +{ + return cs->cmdbytes; +} + +static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) +{ +#ifdef CONFIG_GIGASET_UNDOCREQ + gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0); + memcpy(cs->hw.usb->bchars, buf, 6); + return usb_control_msg(cs->hw.usb->udev, + usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, + 0, 0, &buf, 6, 2000); +#else + return -EINVAL; +#endif +} + +static int gigaset_freebcshw(struct bc_state *bcs) +{ + if (!bcs->hw.usb) + return 0; + //FIXME + kfree(bcs->hw.usb); + return 1; +} + +/* Initialize the b-channel structure */ +static int gigaset_initbcshw(struct bc_state *bcs) +{ + bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL); + if (!bcs->hw.usb) + return 0; + + //bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */ + return 1; +} + +static void gigaset_reinitbcshw(struct bc_state *bcs) +{ +} + +static void gigaset_freecshw(struct cardstate *cs) +{ + //FIXME + tasklet_kill(&cs->write_tasklet); + kfree(cs->hw.usb); +} + +static int gigaset_initcshw(struct cardstate *cs) +{ + struct usb_cardstate *ucs; + + cs->hw.usb = ucs = + kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL); + if (!ucs) + return 0; + + ucs->bchars[0] = 0; + ucs->bchars[1] = 0; + ucs->bchars[2] = 0; + ucs->bchars[3] = 0; + ucs->bchars[4] = 0x11; + ucs->bchars[5] = 0x13; + ucs->bulk_out_buffer = NULL; + ucs->bulk_out_urb = NULL; + //ucs->urb_cmd_out = NULL; + ucs->read_urb = NULL; + tasklet_init(&cs->write_tasklet, + &gigaset_modem_fill, (unsigned long) cs); + + return 1; +} + +/* Writes the data of the current open skb into the modem. + * We have to protect against multiple calls until the + * callback handler () is called , due to the fact that we + * are just allowed to send data once to an endpoint. Therefore + * we using "trans_flg" to synchonize ... + */ +static int write_modem(struct cardstate *cs) +{ + int ret; + int count; + struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ + struct usb_cardstate *ucs = cs->hw.usb; + //unsigned long flags; + + IFNULLRETVAL(bcs->tx_skb, -EINVAL); + + dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len); + + ret = -ENODEV; + IFNULLGOTO(ucs->bulk_out_buffer, error); + IFNULLGOTO(ucs->bulk_out_urb, error); + ret = 0; + + if (!bcs->tx_skb->len) { + dev_kfree_skb_any(bcs->tx_skb); + bcs->tx_skb = NULL; + return -EINVAL; + } + + /* Copy data to bulk out buffer and // FIXME copying not necessary + * transmit data + */ + count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size); + memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count); + skb_pull(bcs->tx_skb, count); + + usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, + usb_sndbulkpipe(ucs->udev, + ucs->bulk_out_endpointAddr & 0x0f), + ucs->bulk_out_buffer, count, + gigaset_write_bulk_callback, cs); + atomic_set(&ucs->busy, 1); + dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count); + + ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); + if (ret) { + err("could not submit urb (error %d).", -ret); + atomic_set(&ucs->busy, 0); + } + if (!bcs->tx_skb->len) { + /* skb sent completely */ + gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0? + + dbg(DEBUG_INTR, + "kfree skb (Adr: %lx)!", (unsigned long) bcs->tx_skb); + dev_kfree_skb_any(bcs->tx_skb); + bcs->tx_skb = NULL; + } + + return ret; +error: + dev_kfree_skb_any(bcs->tx_skb); + bcs->tx_skb = NULL; + return ret; + +} + +static int gigaset_probe(struct usb_interface *interface, + const struct usb_device_id *id) +{ + int retval; + struct usb_device *udev = interface_to_usbdev(interface); + unsigned int ifnum; + struct usb_host_interface *hostif; + struct cardstate *cs = NULL; + struct usb_cardstate *ucs = NULL; + //struct usb_interface_descriptor *iface_desc; + struct usb_endpoint_descriptor *endpoint; + //isdn_ctrl command; + int buffer_size; + int alt; + //unsigned long flags; + + info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", + __func__, le16_to_cpu(udev->descriptor.idVendor), + le16_to_cpu(udev->descriptor.idProduct)); + + retval = -ENODEV; //FIXME + + /* See if the device offered us matches what we can accept */ + if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) || + (le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID))) + return -ENODEV; + + /* this starts to become ascii art... */ + hostif = interface->cur_altsetting; + alt = hostif->desc.bAlternateSetting; + ifnum = hostif->desc.bInterfaceNumber; // FIXME ? + + if (alt != 0 || ifnum != 0) { + warn("ifnum %d, alt %d", ifnum, alt); + return -ENODEV; + } + + /* Reject application specific intefaces + * + */ + if (hostif->desc.bInterfaceClass != 255) { + info("%s: Device matched, but iface_desc[%d]->bInterfaceClass==%d !", + __func__, ifnum, hostif->desc.bInterfaceClass); + return -ENODEV; + } + + info("%s: Device matched ... !", __func__); + + cs = gigaset_getunassignedcs(driver); + if (!cs) { + warn("No free cardstate!"); + return -ENODEV; + } + ucs = cs->hw.usb; + +#if 0 + if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) { + warn("set_configuration failed"); + goto error; + } + + + if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) { + warn("usb_set_interface failed, device %d interface %d altsetting %d", + udev->devnum, ifnum, alt); + goto error; + } +#endif + + /* set up the endpoint information */ + /* check out the endpoints */ + /* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to + * poll messages from the device(int in). + * Therefore we will have an almost similiar situation as with our serial port handler. + * If an connection will be established, we will have to create data in/out pipes + * dynamically... + */ + + endpoint = &hostif->endpoint[0].desc; + + buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); + ucs->bulk_out_size = buffer_size; + ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress; + ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); + if (!ucs->bulk_out_buffer) { + err("Couldn't allocate bulk_out_buffer"); + retval = -ENOMEM; + goto error; + } + + ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->bulk_out_urb) { + err("Couldn't allocate bulk_out_buffer"); + retval = -ENOMEM; + goto error; + } + + endpoint = &hostif->endpoint[1].desc; + + atomic_set(&ucs->busy, 0); + ucs->udev = udev; + ucs->interface = interface; + + ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL); + if (!ucs->read_urb) { + err("No free urbs available"); + retval = -ENOMEM; + goto error; + } + buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); + ucs->rcvbuf_size = buffer_size; + ucs->int_in_endpointAddr = endpoint->bEndpointAddress; + cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL); + if (!cs->inbuf[0].rcvbuf) { + err("Couldn't allocate rcvbuf"); + retval = -ENOMEM; + goto error; + } + /* Fill the interrupt urb and send it to the core */ + usb_fill_int_urb(ucs->read_urb, udev, + usb_rcvintpipe(udev, + endpoint->bEndpointAddress & 0x0f), + cs->inbuf[0].rcvbuf, buffer_size, + gigaset_read_int_callback, + cs->inbuf + 0, endpoint->bInterval); + + retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL); + if (retval) { + err("Could not submit URB!"); + goto error; + } + + /* tell common part that the device is ready */ + if (startmode == SM_LOCKED) + atomic_set(&cs->mstate, MS_LOCKED); + if (!gigaset_start(cs)) { + tasklet_kill(&cs->write_tasklet); + retval = -ENODEV; //FIXME + goto error; + } + + /* save address of controller structure */ + usb_set_intfdata(interface, cs); + + /* set up device sysfs */ + gigaset_init_dev_sysfs(interface); + return 0; + +error: + if (ucs->read_urb) + usb_kill_urb(ucs->read_urb); + kfree(ucs->bulk_out_buffer); + if (ucs->bulk_out_urb != NULL) + usb_free_urb(ucs->bulk_out_urb); + kfree(cs->inbuf[0].rcvbuf); + if (ucs->read_urb != NULL) + usb_free_urb(ucs->read_urb); + ucs->read_urb = ucs->bulk_out_urb = NULL; + cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; + gigaset_unassign(cs); + return retval; +} + +/** + * skel_disconnect + */ +static void gigaset_disconnect(struct usb_interface *interface) +{ + struct cardstate *cs; + struct usb_cardstate *ucs; + + cs = usb_get_intfdata(interface); + + /* clear device sysfs */ + gigaset_free_dev_sysfs(interface); + + usb_set_intfdata(interface, NULL); + ucs = cs->hw.usb; + usb_kill_urb(ucs->read_urb); + //info("GigaSet USB device #%d will be disconnected", minor); + + gigaset_stop(cs); + + tasklet_kill(&cs->write_tasklet); + + usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */ + //usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */ + + kfree(ucs->bulk_out_buffer); + if (ucs->bulk_out_urb != NULL) + usb_free_urb(ucs->bulk_out_urb); + //if(ucs->urb_cmd_out != NULL) + // usb_free_urb(ucs->urb_cmd_out); + kfree(cs->inbuf[0].rcvbuf); + if (ucs->read_urb != NULL) + usb_free_urb(ucs->read_urb); + ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL; + cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; + + gigaset_unassign(cs); +} + +static struct gigaset_ops ops = { + gigaset_write_cmd, + gigaset_write_room, + gigaset_chars_in_buffer, + gigaset_brkchars, + gigaset_init_bchannel, + gigaset_close_bchannel, + gigaset_initbcshw, + gigaset_freebcshw, + gigaset_reinitbcshw, + gigaset_initcshw, + gigaset_freecshw, + gigaset_set_modem_ctrl, + gigaset_baud_rate, + gigaset_set_line_ctrl, + gigaset_m10x_send_skb, + gigaset_m10x_input, +}; + +/** + * usb_gigaset_init + * This function is called while kernel-module is loaded + */ +static int __init usb_gigaset_init(void) +{ + int result; + + /* allocate memory for our driver state and intialize it */ + if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, + GIGASET_MODULENAME, GIGASET_DEVNAME, + GIGASET_DEVFSNAME, &ops, + THIS_MODULE)) == NULL) + goto error; + + /* allocate memory for our device state and intialize it */ + cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME); + if (!cardstate) + goto error; + + /* register this driver with the USB subsystem */ + result = usb_register(&gigaset_usb_driver); + if (result < 0) { + err("usb_gigaset: usb_register failed (error %d)", + -result); + goto error; + } + + info(DRIVER_AUTHOR); + info(DRIVER_DESC); + return 0; + +error: if (cardstate) + gigaset_freecs(cardstate); + cardstate = NULL; + if (driver) + gigaset_freedriver(driver); + driver = NULL; + return -1; +} + + +/** + * usb_gigaset_exit + * This function is called while unloading the kernel-module + */ +static void __exit usb_gigaset_exit(void) +{ + gigaset_blockdriver(driver); /* => probe will fail + * => no gigaset_start any more + */ + + gigaset_shutdown(cardstate); + /* from now on, no isdn callback should be possible */ + + /* deregister this driver with the USB subsystem */ + usb_deregister(&gigaset_usb_driver); + /* this will call the disconnect-callback */ + /* from now on, no disconnect/probe callback should be running */ + + gigaset_freecs(cardstate); + cardstate = NULL; + gigaset_freedriver(driver); + driver = NULL; +} + + +module_init(usb_gigaset_init); +module_exit(usb_gigaset_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); + +MODULE_LICENSE("GPL"); diff --git a/drivers/isdn/hardware/avm/avmcard.h b/drivers/isdn/hardware/avm/avmcard.h index 296d6a6f749..3b431723c7c 100644 --- a/drivers/isdn/hardware/avm/avmcard.h +++ b/drivers/isdn/hardware/avm/avmcard.h @@ -437,9 +437,7 @@ static inline unsigned int t1_get_slice(unsigned int base, #endif dp += i; i = 0; - if (i == 0) - break; - /* fall through */ + break; default: *dp++ = b1_get_byte(base); i--; diff --git a/drivers/isdn/hisax/hisax_fcpcipnp.c b/drivers/isdn/hisax/hisax_fcpcipnp.c index dc7ef957e89..dbcca287ee2 100644 --- a/drivers/isdn/hisax/hisax_fcpcipnp.c +++ b/drivers/isdn/hisax/hisax_fcpcipnp.c @@ -387,8 +387,7 @@ static void hdlc_fill_fifo(struct fritz_bcs *bcs) DBG(0x40, "hdlc_fill_fifo"); - if (skb->len == 0) - BUG(); + BUG_ON(skb->len == 0); bcs->ctrl.sr.cmd &= ~HDLC_CMD_XME; if (bcs->tx_skb->len > bcs->fifo_size) { @@ -630,9 +629,7 @@ static void fritz_b_l2l1(struct hisax_if *ifc, int pr, void *arg) switch (pr) { case PH_DATA | REQUEST: - if (bcs->tx_skb) - BUG(); - + BUG_ON(bcs->tx_skb); bcs->tx_skb = skb; DBG_SKB(1, skb); hdlc_fill_fifo(bcs); diff --git a/drivers/isdn/hisax/hisax_isac.c b/drivers/isdn/hisax/hisax_isac.c index f4972f6c1f5..81eac344bb0 100644 --- a/drivers/isdn/hisax/hisax_isac.c +++ b/drivers/isdn/hisax/hisax_isac.c @@ -476,12 +476,10 @@ static void isac_fill_fifo(struct isac *isac) unsigned char cmd; u_char *ptr; - if (!isac->tx_skb) - BUG(); + BUG_ON(!isac->tx_skb); count = isac->tx_skb->len; - if (count <= 0) - BUG(); + BUG_ON(count <= 0); DBG(DBG_IRQ, "count %d", count); @@ -859,8 +857,7 @@ void isac_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg) dev_kfree_skb(skb); break; } - if (isac->tx_skb) - BUG(); + BUG_ON(isac->tx_skb); isac->tx_skb = skb; isac_fill_fifo(isac); diff --git a/drivers/isdn/hisax/st5481_b.c b/drivers/isdn/hisax/st5481_b.c index 657817a591f..22fd5db18d4 100644 --- a/drivers/isdn/hisax/st5481_b.c +++ b/drivers/isdn/hisax/st5481_b.c @@ -356,9 +356,7 @@ void st5481_b_l2l1(struct hisax_if *ifc, int pr, void *arg) switch (pr) { case PH_DATA | REQUEST: - if (bcs->b_out.tx_skb) - BUG(); - + BUG_ON(bcs->b_out.tx_skb); bcs->b_out.tx_skb = skb; break; case PH_ACTIVATE | REQUEST: diff --git a/drivers/isdn/hisax/st5481_d.c b/drivers/isdn/hisax/st5481_d.c index 941f7022ada..493dc94992e 100644 --- a/drivers/isdn/hisax/st5481_d.c +++ b/drivers/isdn/hisax/st5481_d.c @@ -596,9 +596,7 @@ void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg) break; case PH_DATA | REQUEST: DBG(2, "PH_DATA REQUEST len %d", skb->len); - if (adapter->d_out.tx_skb) - BUG(); - + BUG_ON(adapter->d_out.tx_skb); adapter->d_out.tx_skb = skb; FsmEvent(&adapter->d_out.fsm, EV_DOUT_START_XMIT, NULL); break; diff --git a/drivers/isdn/i4l/Kconfig b/drivers/isdn/i4l/Kconfig index 1789b607f09..a4f7288a1fc 100644 --- a/drivers/isdn/i4l/Kconfig +++ b/drivers/isdn/i4l/Kconfig @@ -139,3 +139,4 @@ source "drivers/isdn/hysdn/Kconfig" endmenu +source "drivers/isdn/gigaset/Kconfig" diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c index b9fed8a3bcc..a0927d1b7a0 100644 --- a/drivers/isdn/i4l/isdn_ppp.c +++ b/drivers/isdn/i4l/isdn_ppp.c @@ -974,8 +974,7 @@ void isdn_ppp_receive(isdn_net_dev * net_dev, isdn_net_local * lp, struct sk_buf int slot; int proto; - if (net_dev->local->master) - BUG(); // we're called with the master device always + BUG_ON(net_dev->local->master); // we're called with the master device always slot = lp->ppp_slot; if (slot < 0 || slot >= ISDN_MAX_CHANNELS) { @@ -2527,8 +2526,7 @@ static struct sk_buff *isdn_ppp_decompress(struct sk_buff *skb,struct ippp_struc printk(KERN_DEBUG "ippp: no decompressor defined!\n"); return skb; } - if (!stat) // if we have a compressor, stat has been set as well - BUG(); + BUG_ON(!stat); // if we have a compressor, stat has been set as well if((master && *proto == PPP_COMP) || (!master && *proto == PPP_COMPFRAG) ) { // compressed packets are compressed by their protocol type diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c index d2ead1776c1..34fcabac5fd 100644 --- a/drivers/macintosh/adb.c +++ b/drivers/macintosh/adb.c @@ -80,7 +80,7 @@ static struct adb_driver *adb_driver_list[] = { static struct class *adb_dev_class; struct adb_driver *adb_controller; -struct notifier_block *adb_client_list = NULL; +BLOCKING_NOTIFIER_HEAD(adb_client_list); static int adb_got_sleep; static int adb_inited; static pid_t adb_probe_task_pid; @@ -354,7 +354,8 @@ adb_notify_sleep(struct pmu_sleep_notifier *self, int when) /* Stop autopoll */ if (adb_controller->autopoll) adb_controller->autopoll(0); - ret = notifier_call_chain(&adb_client_list, ADB_MSG_POWERDOWN, NULL); + ret = blocking_notifier_call_chain(&adb_client_list, + ADB_MSG_POWERDOWN, NULL); if (ret & NOTIFY_STOP_MASK) { up(&adb_probe_mutex); return PBOOK_SLEEP_REFUSE; @@ -391,7 +392,8 @@ do_adb_reset_bus(void) if (adb_controller->autopoll) adb_controller->autopoll(0); - nret = notifier_call_chain(&adb_client_list, ADB_MSG_PRE_RESET, NULL); + nret = blocking_notifier_call_chain(&adb_client_list, + ADB_MSG_PRE_RESET, NULL); if (nret & NOTIFY_STOP_MASK) { if (adb_controller->autopoll) adb_controller->autopoll(autopoll_devs); @@ -426,7 +428,8 @@ do_adb_reset_bus(void) } up(&adb_handler_sem); - nret = notifier_call_chain(&adb_client_list, ADB_MSG_POST_RESET, NULL); + nret = blocking_notifier_call_chain(&adb_client_list, + ADB_MSG_POST_RESET, NULL); if (nret & NOTIFY_STOP_MASK) return -EBUSY; diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c index c0b46bceb5d..f5779a73184 100644 --- a/drivers/macintosh/adbhid.c +++ b/drivers/macintosh/adbhid.c @@ -1214,7 +1214,8 @@ static int __init adbhid_init(void) adbhid_probe(); - notifier_chain_register(&adb_client_list, &adbhid_adb_notifier); + blocking_notifier_chain_register(&adb_client_list, + &adbhid_adb_notifier); return 0; } diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index 4eb05d7143d..f4516ca7aa3 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -35,6 +35,7 @@ #include <linux/delay.h> #include <linux/sysdev.h> #include <linux/poll.h> +#include <linux/mutex.h> #include <asm/byteorder.h> #include <asm/io.h> @@ -92,7 +93,7 @@ struct smu_device { * for now, just hard code that */ static struct smu_device *smu; -static DECLARE_MUTEX(smu_part_access); +static DEFINE_MUTEX(smu_part_access); static void smu_i2c_retry(unsigned long data); @@ -976,11 +977,11 @@ struct smu_sdbp_header *__smu_get_sdb_partition(int id, unsigned int *size, if (interruptible) { int rc; - rc = down_interruptible(&smu_part_access); + rc = mutex_lock_interruptible(&smu_part_access); if (rc) return ERR_PTR(rc); } else - down(&smu_part_access); + mutex_lock(&smu_part_access); part = (struct smu_sdbp_header *)get_property(smu->of_node, pname, size); @@ -990,7 +991,7 @@ struct smu_sdbp_header *__smu_get_sdb_partition(int id, unsigned int *size, if (part != NULL && size) *size = part->len << 2; } - up(&smu_part_access); + mutex_unlock(&smu_part_access); return part; } diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 4f5f3abc9cb..0b5ff553e39 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -187,7 +187,7 @@ extern int disable_kernel_backlight; int __fake_sleep; int asleep; -struct notifier_block *sleep_notifier_list; +BLOCKING_NOTIFIER_HEAD(sleep_notifier_list); #ifdef CONFIG_ADB static int adb_dev_map = 0; diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c index f08e52f2107..35b70323e7e 100644 --- a/drivers/macintosh/via-pmu68k.c +++ b/drivers/macintosh/via-pmu68k.c @@ -102,7 +102,7 @@ static int pmu_kind = PMU_UNKNOWN; static int pmu_fully_inited = 0; int asleep; -struct notifier_block *sleep_notifier_list; +BLOCKING_NOTIFIER_HEAD(sleep_notifier_list); static int pmu_probe(void); static int pmu_init(void); @@ -913,7 +913,8 @@ int powerbook_sleep(void) struct adb_request sleep_req; /* Notify device drivers */ - ret = notifier_call_chain(&sleep_notifier_list, PBOOK_SLEEP, NULL); + ret = blocking_notifier_call_chain(&sleep_notifier_list, + PBOOK_SLEEP, NULL); if (ret & NOTIFY_STOP_MASK) return -EBUSY; @@ -984,7 +985,7 @@ int powerbook_sleep(void) enable_irq(i); /* Notify drivers */ - notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL); + blocking_notifier_call_chain(&sleep_notifier_list, PBOOK_WAKE, NULL); /* reenable ADB autopoll */ pmu_adb_autopoll(adb_dev_map); diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c index 6c0ba04bc57..ab3faa702d5 100644 --- a/drivers/macintosh/windfarm_core.c +++ b/drivers/macintosh/windfarm_core.c @@ -52,7 +52,7 @@ static LIST_HEAD(wf_controls); static LIST_HEAD(wf_sensors); static DEFINE_MUTEX(wf_lock); -static struct notifier_block *wf_client_list; +static BLOCKING_NOTIFIER_HEAD(wf_client_list); static int wf_client_count; static unsigned int wf_overtemp; static unsigned int wf_overtemp_counter; @@ -68,7 +68,7 @@ static struct platform_device wf_platform_device = { static inline void wf_notify(int event, void *param) { - notifier_call_chain(&wf_client_list, event, param); + blocking_notifier_call_chain(&wf_client_list, event, param); } int wf_critical_overtemp(void) @@ -398,7 +398,7 @@ int wf_register_client(struct notifier_block *nb) struct wf_sensor *sr; mutex_lock(&wf_lock); - rc = notifier_chain_register(&wf_client_list, nb); + rc = blocking_notifier_chain_register(&wf_client_list, nb); if (rc != 0) goto bail; wf_client_count++; @@ -417,7 +417,7 @@ EXPORT_SYMBOL_GPL(wf_register_client); int wf_unregister_client(struct notifier_block *nb) { mutex_lock(&wf_lock); - notifier_chain_unregister(&wf_client_list, nb); + blocking_notifier_chain_unregister(&wf_client_list, nb); wf_client_count++; if (wf_client_count == 0) wf_stop_thread(); diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index ac43f98062f..fd2aae150cc 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -127,6 +127,32 @@ config MD_RAID5 If unsure, say Y. +config MD_RAID5_RESHAPE + bool "Support adding drives to a raid-5 array (experimental)" + depends on MD_RAID5 && EXPERIMENTAL + ---help--- + A RAID-5 set can be expanded by adding extra drives. This + requires "restriping" the array which means (almost) every + block must be written to a different place. + + This option allows such restriping to be done while the array + is online. However it is still EXPERIMENTAL code. It should + work, but please be sure that you have backups. + + You will need a version of mdadm newer than 2.3.1. During the + early stage of reshape there is a critical section where live data + is being over-written. A crash during this time needs extra care + for recovery. The newer mdadm takes a copy of the data in the + critical section and will restore it, if necessary, after a crash. + + The mdadm usage is e.g. + mdadm --grow /dev/md1 --raid-disks=6 + to grow '/dev/md1' to having 6 disks. + + Note: The array can only be expanded, not contracted. + There should be enough spares already present to make the new + array workable. + config MD_RAID6 tristate "RAID-6 mode" depends on BLK_DEV_MD diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index e1c18aa1d71..f8ffaee20ff 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -89,16 +89,6 @@ int bitmap_active(struct bitmap *bitmap) } #define WRITE_POOL_SIZE 256 -/* mempool for queueing pending writes on the bitmap file */ -static void *write_pool_alloc(gfp_t gfp_flags, void *data) -{ - return kmalloc(sizeof(struct page_list), gfp_flags); -} - -static void write_pool_free(void *ptr, void *data) -{ - kfree(ptr); -} /* * just a placeholder - calls kmalloc for bitmap pages @@ -1564,8 +1554,8 @@ int bitmap_create(mddev_t *mddev) spin_lock_init(&bitmap->write_lock); INIT_LIST_HEAD(&bitmap->complete_pages); init_waitqueue_head(&bitmap->write_wait); - bitmap->write_pool = mempool_create(WRITE_POOL_SIZE, write_pool_alloc, - write_pool_free, NULL); + bitmap->write_pool = mempool_create_kmalloc_pool(WRITE_POOL_SIZE, + sizeof(struct page_list)); err = -ENOMEM; if (!bitmap->write_pool) goto error; diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index e7a650f9ca0..61a590bb624 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -94,20 +94,6 @@ struct crypt_config { static kmem_cache_t *_crypt_io_pool; /* - * Mempool alloc and free functions for the page - */ -static void *mempool_alloc_page(gfp_t gfp_mask, void *data) -{ - return alloc_page(gfp_mask); -} - -static void mempool_free_page(void *page, void *data) -{ - __free_page(page); -} - - -/* * Different IV generation algorithms: * * plain: the initial vector is the 32-bit low-endian version of the sector @@ -532,6 +518,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) char *ivopts; unsigned int crypto_flags; unsigned int key_size; + unsigned long long tmpll; if (argc != 5) { ti->error = PFX "Not enough arguments"; @@ -630,15 +617,13 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) } } - cc->io_pool = mempool_create(MIN_IOS, mempool_alloc_slab, - mempool_free_slab, _crypt_io_pool); + cc->io_pool = mempool_create_slab_pool(MIN_IOS, _crypt_io_pool); if (!cc->io_pool) { ti->error = PFX "Cannot allocate crypt io mempool"; goto bad3; } - cc->page_pool = mempool_create(MIN_POOL_PAGES, mempool_alloc_page, - mempool_free_page, NULL); + cc->page_pool = mempool_create_page_pool(MIN_POOL_PAGES, 0); if (!cc->page_pool) { ti->error = PFX "Cannot allocate page mempool"; goto bad4; @@ -649,15 +634,17 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) goto bad5; } - if (sscanf(argv[2], SECTOR_FORMAT, &cc->iv_offset) != 1) { + if (sscanf(argv[2], "%llu", &tmpll) != 1) { ti->error = PFX "Invalid iv_offset sector"; goto bad5; } + cc->iv_offset = tmpll; - if (sscanf(argv[4], SECTOR_FORMAT, &cc->start) != 1) { + if (sscanf(argv[4], "%llu", &tmpll) != 1) { ti->error = PFX "Invalid device sector"; goto bad5; } + cc->start = tmpll; if (dm_get_device(ti, argv[3], cc->start, ti->len, dm_table_get_mode(ti->table), &cc->dev)) { @@ -901,8 +888,8 @@ static int crypt_status(struct dm_target *ti, status_type_t type, result[sz++] = '-'; } - DMEMIT(" " SECTOR_FORMAT " %s " SECTOR_FORMAT, - cc->iv_offset, cc->dev->name, cc->start); + DMEMIT(" %llu %s %llu", (unsigned long long)cc->iv_offset, + cc->dev->name, (unsigned long long)cc->start); break; } return 0; diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c index 4809b209fbb..da663d2ff55 100644 --- a/drivers/md/dm-io.c +++ b/drivers/md/dm-io.c @@ -32,16 +32,6 @@ struct io { static unsigned _num_ios; static mempool_t *_io_pool; -static void *alloc_io(gfp_t gfp_mask, void *pool_data) -{ - return kmalloc(sizeof(struct io), gfp_mask); -} - -static void free_io(void *element, void *pool_data) -{ - kfree(element); -} - static unsigned int pages_to_ios(unsigned int pages) { return 4 * pages; /* too many ? */ @@ -65,7 +55,8 @@ static int resize_pool(unsigned int new_ios) } else { /* create new pool */ - _io_pool = mempool_create(new_ios, alloc_io, free_io, NULL); + _io_pool = mempool_create_kmalloc_pool(new_ios, + sizeof(struct io)); if (!_io_pool) return -ENOMEM; diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 442e2be6052..8edd6435414 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -15,6 +15,7 @@ #include <linux/slab.h> #include <linux/devfs_fs_kernel.h> #include <linux/dm-ioctl.h> +#include <linux/hdreg.h> #include <asm/uaccess.h> @@ -244,9 +245,9 @@ static void __hash_remove(struct hash_cell *hc) dm_table_put(table); } - dm_put(hc->md); if (hc->new_map) dm_table_put(hc->new_map); + dm_put(hc->md); free_cell(hc); } @@ -600,12 +601,22 @@ static int dev_create(struct dm_ioctl *param, size_t param_size) */ static struct hash_cell *__find_device_hash_cell(struct dm_ioctl *param) { + struct mapped_device *md; + void *mdptr = NULL; + if (*param->uuid) return __get_uuid_cell(param->uuid); - else if (*param->name) + + if (*param->name) return __get_name_cell(param->name); - else - return dm_get_mdptr(huge_decode_dev(param->dev)); + + md = dm_get_md(huge_decode_dev(param->dev)); + if (md) { + mdptr = dm_get_mdptr(md); + dm_put(md); + } + + return mdptr; } static struct mapped_device *find_device(struct dm_ioctl *param) @@ -690,6 +701,54 @@ static int dev_rename(struct dm_ioctl *param, size_t param_size) return dm_hash_rename(param->name, new_name); } +static int dev_set_geometry(struct dm_ioctl *param, size_t param_size) +{ + int r = -EINVAL, x; + struct mapped_device *md; + struct hd_geometry geometry; + unsigned long indata[4]; + char *geostr = (char *) param + param->data_start; + + md = find_device(param); + if (!md) + return -ENXIO; + + if (geostr < (char *) (param + 1) || + invalid_str(geostr, (void *) param + param_size)) { + DMWARN("Invalid geometry supplied."); + goto out; + } + + x = sscanf(geostr, "%lu %lu %lu %lu", indata, + indata + 1, indata + 2, indata + 3); + + if (x != 4) { + DMWARN("Unable to interpret geometry settings."); + goto out; + } + + if (indata[0] > 65535 || indata[1] > 255 || + indata[2] > 255 || indata[3] > ULONG_MAX) { + DMWARN("Geometry exceeds range limits."); + goto out; + } + + geometry.cylinders = indata[0]; + geometry.heads = indata[1]; + geometry.sectors = indata[2]; + geometry.start = indata[3]; + + r = dm_set_geometry(md, &geometry); + if (!r) + r = __dev_status(md, param); + + param->data_size = 0; + +out: + dm_put(md); + return r; +} + static int do_suspend(struct dm_ioctl *param) { int r = 0; @@ -975,33 +1034,43 @@ static int table_load(struct dm_ioctl *param, size_t param_size) int r; struct hash_cell *hc; struct dm_table *t; + struct mapped_device *md; - r = dm_table_create(&t, get_mode(param), param->target_count); + md = find_device(param); + if (!md) + return -ENXIO; + + r = dm_table_create(&t, get_mode(param), param->target_count, md); if (r) - return r; + goto out; r = populate_table(t, param, param_size); if (r) { dm_table_put(t); - return r; + goto out; } down_write(&_hash_lock); - hc = __find_device_hash_cell(param); - if (!hc) { - DMWARN("device doesn't appear to be in the dev hash table."); - up_write(&_hash_lock); + hc = dm_get_mdptr(md); + if (!hc || hc->md != md) { + DMWARN("device has been removed from the dev hash table."); dm_table_put(t); - return -ENXIO; + up_write(&_hash_lock); + r = -ENXIO; + goto out; } if (hc->new_map) dm_table_put(hc->new_map); hc->new_map = t; + up_write(&_hash_lock); + param->flags |= DM_INACTIVE_PRESENT_FLAG; + r = __dev_status(md, param); + +out: + dm_put(md); - r = __dev_status(hc->md, param); - up_write(&_hash_lock); return r; } @@ -1214,7 +1283,8 @@ static ioctl_fn lookup_ioctl(unsigned int cmd) {DM_LIST_VERSIONS_CMD, list_versions}, - {DM_TARGET_MSG_CMD, target_message} + {DM_TARGET_MSG_CMD, target_message}, + {DM_DEV_SET_GEOMETRY_CMD, dev_set_geometry} }; return (cmd >= ARRAY_SIZE(_ioctls)) ? NULL : _ioctls[cmd].fn; diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 6a2cd5dc8a6..daf586c0898 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -26,6 +26,7 @@ struct linear_c { static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv) { struct linear_c *lc; + unsigned long long tmp; if (argc != 2) { ti->error = "dm-linear: Invalid argument count"; @@ -38,10 +39,11 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv) return -ENOMEM; } - if (sscanf(argv[1], SECTOR_FORMAT, &lc->start) != 1) { + if (sscanf(argv[1], "%llu", &tmp) != 1) { ti->error = "dm-linear: Invalid device sector"; goto bad; } + lc->start = tmp; if (dm_get_device(ti, argv[0], lc->start, ti->len, dm_table_get_mode(ti->table), &lc->dev)) { @@ -87,8 +89,8 @@ static int linear_status(struct dm_target *ti, status_type_t type, break; case STATUSTYPE_TABLE: - snprintf(result, maxlen, "%s " SECTOR_FORMAT, lc->dev->name, - lc->start); + snprintf(result, maxlen, "%s %llu", lc->dev->name, + (unsigned long long)lc->start); break; } return 0; diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index f72a82fb943..1816f30678e 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -179,8 +179,7 @@ static struct multipath *alloc_multipath(void) m->queue_io = 1; INIT_WORK(&m->process_queued_ios, process_queued_ios, m); INIT_WORK(&m->trigger_event, trigger_event, m); - m->mpio_pool = mempool_create(MIN_IOS, mempool_alloc_slab, - mempool_free_slab, _mpio_cache); + m->mpio_pool = mempool_create_slab_pool(MIN_IOS, _mpio_cache); if (!m->mpio_pool) { kfree(m); return NULL; diff --git a/drivers/md/dm-path-selector.c b/drivers/md/dm-path-selector.c index a28c1c2b4ef..f10a0c89b3f 100644 --- a/drivers/md/dm-path-selector.c +++ b/drivers/md/dm-path-selector.c @@ -86,8 +86,7 @@ void dm_put_path_selector(struct path_selector_type *pst) if (--psi->use == 0) module_put(psi->pst.module); - if (psi->use < 0) - BUG(); + BUG_ON(psi->use < 0); out: up_read(&_ps_lock); diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 6cfa8d435d5..d12cf3e5e07 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -122,16 +122,6 @@ static inline sector_t region_to_sector(struct region_hash *rh, region_t region) /* FIXME move this */ static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw); -static void *region_alloc(gfp_t gfp_mask, void *pool_data) -{ - return kmalloc(sizeof(struct region), gfp_mask); -} - -static void region_free(void *element, void *pool_data) -{ - kfree(element); -} - #define MIN_REGIONS 64 #define MAX_RECOVERY 1 static int rh_init(struct region_hash *rh, struct mirror_set *ms, @@ -173,8 +163,8 @@ static int rh_init(struct region_hash *rh, struct mirror_set *ms, INIT_LIST_HEAD(&rh->quiesced_regions); INIT_LIST_HEAD(&rh->recovered_regions); - rh->region_pool = mempool_create(MIN_REGIONS, region_alloc, - region_free, NULL); + rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS, + sizeof(struct region)); if (!rh->region_pool) { vfree(rh->buckets); rh->buckets = NULL; @@ -412,9 +402,21 @@ static void rh_dec(struct region_hash *rh, region_t region) spin_lock_irqsave(&rh->region_lock, flags); if (atomic_dec_and_test(®->pending)) { + /* + * There is no pending I/O for this region. + * We can move the region to corresponding list for next action. + * At this point, the region is not yet connected to any list. + * + * If the state is RH_NOSYNC, the region should be kept off + * from clean list. + * The hash entry for RH_NOSYNC will remain in memory + * until the region is recovered or the map is reloaded. + */ + + /* do nothing for RH_NOSYNC */ if (reg->state == RH_RECOVERING) { list_add_tail(®->list, &rh->quiesced_regions); - } else { + } else if (reg->state == RH_DIRTY) { reg->state = RH_CLEAN; list_add(®->list, &rh->clean_regions); } @@ -932,9 +934,9 @@ static inline int _check_region_size(struct dm_target *ti, uint32_t size) static int get_mirror(struct mirror_set *ms, struct dm_target *ti, unsigned int mirror, char **argv) { - sector_t offset; + unsigned long long offset; - if (sscanf(argv[1], SECTOR_FORMAT, &offset) != 1) { + if (sscanf(argv[1], "%llu", &offset) != 1) { ti->error = "dm-mirror: Invalid offset"; return -EINVAL; } @@ -1201,16 +1203,17 @@ static int mirror_status(struct dm_target *ti, status_type_t type, for (m = 0; m < ms->nr_mirrors; m++) DMEMIT("%s ", ms->mirror[m].dev->name); - DMEMIT(SECTOR_FORMAT "/" SECTOR_FORMAT, - ms->rh.log->type->get_sync_count(ms->rh.log), - ms->nr_regions); + DMEMIT("%llu/%llu", + (unsigned long long)ms->rh.log->type-> + get_sync_count(ms->rh.log), + (unsigned long long)ms->nr_regions); break; case STATUSTYPE_TABLE: DMEMIT("%d ", ms->nr_mirrors); for (m = 0; m < ms->nr_mirrors; m++) - DMEMIT("%s " SECTOR_FORMAT " ", - ms->mirror[m].dev->name, ms->mirror[m].offset); + DMEMIT("%s %llu ", ms->mirror[m].dev->name, + (unsigned long long)ms->mirror[m].offset); } return 0; diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index f3759dd7828..08312b46463 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -49,11 +49,26 @@ struct pending_exception { struct bio_list snapshot_bios; /* - * Other pending_exceptions that are processing this - * chunk. When this list is empty, we know we can - * complete the origins. + * Short-term queue of pending exceptions prior to submission. */ - struct list_head siblings; + struct list_head list; + + /* + * The primary pending_exception is the one that holds + * the sibling_count and the list of origin_bios for a + * group of pending_exceptions. It is always last to get freed. + * These fields get set up when writing to the origin. + */ + struct pending_exception *primary_pe; + + /* + * Number of pending_exceptions processing this chunk. + * When this drops to zero we must complete the origin bios. + * If incrementing or decrementing this, hold pe->snap->lock for + * the sibling concerned and not pe->primary_pe->snap->lock unless + * they are the same. + */ + atomic_t sibling_count; /* Pointer back to snapshot context */ struct dm_snapshot *snap; @@ -377,6 +392,8 @@ static void read_snapshot_metadata(struct dm_snapshot *s) down_write(&s->lock); s->valid = 0; up_write(&s->lock); + + dm_table_event(s->table); } } @@ -542,8 +559,12 @@ static void snapshot_dtr(struct dm_target *ti) { struct dm_snapshot *s = (struct dm_snapshot *) ti->private; + /* Prevent further origin writes from using this snapshot. */ + /* After this returns there can be no new kcopyd jobs. */ unregister_snapshot(s); + kcopyd_client_destroy(s->kcopyd_client); + exit_exception_table(&s->pending, pending_cache); exit_exception_table(&s->complete, exception_cache); @@ -552,7 +573,7 @@ static void snapshot_dtr(struct dm_target *ti) dm_put_device(ti, s->origin); dm_put_device(ti, s->cow); - kcopyd_client_destroy(s->kcopyd_client); + kfree(s); } @@ -586,78 +607,117 @@ static void error_bios(struct bio *bio) } } +static inline void error_snapshot_bios(struct pending_exception *pe) +{ + error_bios(bio_list_get(&pe->snapshot_bios)); +} + static struct bio *__flush_bios(struct pending_exception *pe) { - struct pending_exception *sibling; + /* + * If this pe is involved in a write to the origin and + * it is the last sibling to complete then release + * the bios for the original write to the origin. + */ + + if (pe->primary_pe && + atomic_dec_and_test(&pe->primary_pe->sibling_count)) + return bio_list_get(&pe->primary_pe->origin_bios); + + return NULL; +} + +static void __invalidate_snapshot(struct dm_snapshot *s, + struct pending_exception *pe, int err) +{ + if (!s->valid) + return; - if (list_empty(&pe->siblings)) - return bio_list_get(&pe->origin_bios); + if (err == -EIO) + DMERR("Invalidating snapshot: Error reading/writing."); + else if (err == -ENOMEM) + DMERR("Invalidating snapshot: Unable to allocate exception."); - sibling = list_entry(pe->siblings.next, - struct pending_exception, siblings); + if (pe) + remove_exception(&pe->e); - list_del(&pe->siblings); + if (s->store.drop_snapshot) + s->store.drop_snapshot(&s->store); - /* This is fine as long as kcopyd is single-threaded. If kcopyd - * becomes multi-threaded, we'll need some locking here. - */ - bio_list_merge(&sibling->origin_bios, &pe->origin_bios); + s->valid = 0; - return NULL; + dm_table_event(s->table); } static void pending_complete(struct pending_exception *pe, int success) { struct exception *e; + struct pending_exception *primary_pe; struct dm_snapshot *s = pe->snap; struct bio *flush = NULL; - if (success) { - e = alloc_exception(); - if (!e) { - DMWARN("Unable to allocate exception."); - down_write(&s->lock); - s->store.drop_snapshot(&s->store); - s->valid = 0; - flush = __flush_bios(pe); - up_write(&s->lock); - - error_bios(bio_list_get(&pe->snapshot_bios)); - goto out; - } - *e = pe->e; - - /* - * Add a proper exception, and remove the - * in-flight exception from the list. - */ + if (!success) { + /* Read/write error - snapshot is unusable */ down_write(&s->lock); - insert_exception(&s->complete, e); - remove_exception(&pe->e); + __invalidate_snapshot(s, pe, -EIO); flush = __flush_bios(pe); - - /* Submit any pending write bios */ up_write(&s->lock); - flush_bios(bio_list_get(&pe->snapshot_bios)); - } else { - /* Read/write error - snapshot is unusable */ + error_snapshot_bios(pe); + goto out; + } + + e = alloc_exception(); + if (!e) { down_write(&s->lock); - if (s->valid) - DMERR("Error reading/writing snapshot"); - s->store.drop_snapshot(&s->store); - s->valid = 0; - remove_exception(&pe->e); + __invalidate_snapshot(s, pe, -ENOMEM); flush = __flush_bios(pe); up_write(&s->lock); - error_bios(bio_list_get(&pe->snapshot_bios)); + error_snapshot_bios(pe); + goto out; + } + *e = pe->e; - dm_table_event(s->table); + /* + * Add a proper exception, and remove the + * in-flight exception from the list. + */ + down_write(&s->lock); + if (!s->valid) { + flush = __flush_bios(pe); + up_write(&s->lock); + + free_exception(e); + + error_snapshot_bios(pe); + goto out; } + insert_exception(&s->complete, e); + remove_exception(&pe->e); + flush = __flush_bios(pe); + + up_write(&s->lock); + + /* Submit any pending write bios */ + flush_bios(bio_list_get(&pe->snapshot_bios)); + out: - free_pending_exception(pe); + primary_pe = pe->primary_pe; + + /* + * Free the pe if it's not linked to an origin write or if + * it's not itself a primary pe. + */ + if (!primary_pe || primary_pe != pe) + free_pending_exception(pe); + + /* + * Free the primary pe if nothing references it. + */ + if (primary_pe && !atomic_read(&primary_pe->sibling_count)) + free_pending_exception(primary_pe); if (flush) flush_bios(flush); @@ -734,38 +794,45 @@ __find_pending_exception(struct dm_snapshot *s, struct bio *bio) if (e) { /* cast the exception to a pending exception */ pe = container_of(e, struct pending_exception, e); + goto out; + } - } else { - /* - * Create a new pending exception, we don't want - * to hold the lock while we do this. - */ - up_write(&s->lock); - pe = alloc_pending_exception(); - down_write(&s->lock); + /* + * Create a new pending exception, we don't want + * to hold the lock while we do this. + */ + up_write(&s->lock); + pe = alloc_pending_exception(); + down_write(&s->lock); - e = lookup_exception(&s->pending, chunk); - if (e) { - free_pending_exception(pe); - pe = container_of(e, struct pending_exception, e); - } else { - pe->e.old_chunk = chunk; - bio_list_init(&pe->origin_bios); - bio_list_init(&pe->snapshot_bios); - INIT_LIST_HEAD(&pe->siblings); - pe->snap = s; - pe->started = 0; - - if (s->store.prepare_exception(&s->store, &pe->e)) { - free_pending_exception(pe); - s->valid = 0; - return NULL; - } + if (!s->valid) { + free_pending_exception(pe); + return NULL; + } - insert_exception(&s->pending, &pe->e); - } + e = lookup_exception(&s->pending, chunk); + if (e) { + free_pending_exception(pe); + pe = container_of(e, struct pending_exception, e); + goto out; + } + + pe->e.old_chunk = chunk; + bio_list_init(&pe->origin_bios); + bio_list_init(&pe->snapshot_bios); + pe->primary_pe = NULL; + atomic_set(&pe->sibling_count, 1); + pe->snap = s; + pe->started = 0; + + if (s->store.prepare_exception(&s->store, &pe->e)) { + free_pending_exception(pe); + return NULL; } + insert_exception(&s->pending, &pe->e); + + out: return pe; } @@ -782,13 +849,15 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, { struct exception *e; struct dm_snapshot *s = (struct dm_snapshot *) ti->private; + int copy_needed = 0; int r = 1; chunk_t chunk; - struct pending_exception *pe; + struct pending_exception *pe = NULL; chunk = sector_to_chunk(s, bio->bi_sector); /* Full snapshots are not usable */ + /* To get here the table must be live so s->active is always set. */ if (!s->valid) return -EIO; @@ -806,36 +875,41 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, * to copy an exception */ down_write(&s->lock); + if (!s->valid) { + r = -EIO; + goto out_unlock; + } + /* If the block is already remapped - use that, else remap it */ e = lookup_exception(&s->complete, chunk); if (e) { remap_exception(s, e, bio); - up_write(&s->lock); - - } else { - pe = __find_pending_exception(s, bio); - - if (!pe) { - if (s->store.drop_snapshot) - s->store.drop_snapshot(&s->store); - s->valid = 0; - r = -EIO; - up_write(&s->lock); - } else { - remap_exception(s, &pe->e, bio); - bio_list_add(&pe->snapshot_bios, bio); - - if (!pe->started) { - /* this is protected by snap->lock */ - pe->started = 1; - up_write(&s->lock); - start_copy(pe); - } else - up_write(&s->lock); - r = 0; - } + goto out_unlock; + } + + pe = __find_pending_exception(s, bio); + if (!pe) { + __invalidate_snapshot(s, pe, -ENOMEM); + r = -EIO; + goto out_unlock; + } + + remap_exception(s, &pe->e, bio); + bio_list_add(&pe->snapshot_bios, bio); + + if (!pe->started) { + /* this is protected by snap->lock */ + pe->started = 1; + copy_needed = 1; } + r = 0; + + out_unlock: + up_write(&s->lock); + + if (copy_needed) + start_copy(pe); } else { /* * FIXME: this read path scares me because we @@ -847,6 +921,11 @@ static int snapshot_map(struct dm_target *ti, struct bio *bio, /* Do reads */ down_read(&s->lock); + if (!s->valid) { + up_read(&s->lock); + return -EIO; + } + /* See if it it has been remapped */ e = lookup_exception(&s->complete, chunk); if (e) @@ -884,9 +963,9 @@ static int snapshot_status(struct dm_target *ti, status_type_t type, snap->store.fraction_full(&snap->store, &numerator, &denominator); - snprintf(result, maxlen, - SECTOR_FORMAT "/" SECTOR_FORMAT, - numerator, denominator); + snprintf(result, maxlen, "%llu/%llu", + (unsigned long long)numerator, + (unsigned long long)denominator); } else snprintf(result, maxlen, "Unknown"); @@ -899,9 +978,10 @@ static int snapshot_status(struct dm_target *ti, status_type_t type, * to make private copies if the output is to * make sense. */ - snprintf(result, maxlen, "%s %s %c " SECTOR_FORMAT, + snprintf(result, maxlen, "%s %s %c %llu", snap->origin->name, snap->cow->name, - snap->type, snap->chunk_size); + snap->type, + (unsigned long long)snap->chunk_size); break; } @@ -911,40 +991,27 @@ static int snapshot_status(struct dm_target *ti, status_type_t type, /*----------------------------------------------------------------- * Origin methods *---------------------------------------------------------------*/ -static void list_merge(struct list_head *l1, struct list_head *l2) -{ - struct list_head *l1_n, *l2_p; - - l1_n = l1->next; - l2_p = l2->prev; - - l1->next = l2; - l2->prev = l1; - - l2_p->next = l1_n; - l1_n->prev = l2_p; -} - static int __origin_write(struct list_head *snapshots, struct bio *bio) { - int r = 1, first = 1; + int r = 1, first = 0; struct dm_snapshot *snap; struct exception *e; - struct pending_exception *pe, *last = NULL; + struct pending_exception *pe, *next_pe, *primary_pe = NULL; chunk_t chunk; + LIST_HEAD(pe_queue); /* Do all the snapshots on this origin */ list_for_each_entry (snap, snapshots, list) { + down_write(&snap->lock); + /* Only deal with valid and active snapshots */ if (!snap->valid || !snap->active) - continue; + goto next_snapshot; /* Nothing to do if writing beyond end of snapshot */ if (bio->bi_sector >= dm_table_get_size(snap->table)) - continue; - - down_write(&snap->lock); + goto next_snapshot; /* * Remember, different snapshots can have @@ -956,49 +1023,75 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio) * Check exception table to see if block * is already remapped in this snapshot * and trigger an exception if not. + * + * sibling_count is initialised to 1 so pending_complete() + * won't destroy the primary_pe while we're inside this loop. */ e = lookup_exception(&snap->complete, chunk); - if (!e) { - pe = __find_pending_exception(snap, bio); - if (!pe) { - snap->store.drop_snapshot(&snap->store); - snap->valid = 0; - - } else { - if (last) - list_merge(&pe->siblings, - &last->siblings); - - last = pe; - r = 0; + if (e) + goto next_snapshot; + + pe = __find_pending_exception(snap, bio); + if (!pe) { + __invalidate_snapshot(snap, pe, ENOMEM); + goto next_snapshot; + } + + if (!primary_pe) { + /* + * Either every pe here has same + * primary_pe or none has one yet. + */ + if (pe->primary_pe) + primary_pe = pe->primary_pe; + else { + primary_pe = pe; + first = 1; } + + bio_list_add(&primary_pe->origin_bios, bio); + + r = 0; + } + + if (!pe->primary_pe) { + atomic_inc(&primary_pe->sibling_count); + pe->primary_pe = primary_pe; + } + + if (!pe->started) { + pe->started = 1; + list_add_tail(&pe->list, &pe_queue); } + next_snapshot: up_write(&snap->lock); } + if (!primary_pe) + goto out; + /* - * Now that we have a complete pe list we can start the copying. + * If this is the first time we're processing this chunk and + * sibling_count is now 1 it means all the pending exceptions + * got completed while we were in the loop above, so it falls to + * us here to remove the primary_pe and submit any origin_bios. */ - if (last) { - pe = last; - do { - down_write(&pe->snap->lock); - if (first) - bio_list_add(&pe->origin_bios, bio); - if (!pe->started) { - pe->started = 1; - up_write(&pe->snap->lock); - start_copy(pe); - } else - up_write(&pe->snap->lock); - first = 0; - pe = list_entry(pe->siblings.next, - struct pending_exception, siblings); - - } while (pe != last); + + if (first && atomic_dec_and_test(&primary_pe->sibling_count)) { + flush_bios(bio_list_get(&primary_pe->origin_bios)); + free_pending_exception(primary_pe); + /* If we got here, pe_queue is necessarily empty. */ + goto out; } + /* + * Now that we have a complete pe list we can start the copying. + */ + list_for_each_entry_safe(pe, next_pe, &pe_queue, list) + start_copy(pe); + + out: return r; } @@ -1174,8 +1267,7 @@ static int __init dm_snapshot_init(void) goto bad4; } - pending_pool = mempool_create(128, mempool_alloc_slab, - mempool_free_slab, pending_cache); + pending_pool = mempool_create_slab_pool(128, pending_cache); if (!pending_pool) { DMERR("Couldn't create pending pool."); r = -ENOMEM; diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c index 697aacafb02..08328a8f5a3 100644 --- a/drivers/md/dm-stripe.c +++ b/drivers/md/dm-stripe.c @@ -49,9 +49,9 @@ static inline struct stripe_c *alloc_context(unsigned int stripes) static int get_stripe(struct dm_target *ti, struct stripe_c *sc, unsigned int stripe, char **argv) { - sector_t start; + unsigned long long start; - if (sscanf(argv[1], SECTOR_FORMAT, &start) != 1) + if (sscanf(argv[1], "%llu", &start) != 1) return -EINVAL; if (dm_get_device(ti, argv[0], start, sc->stripe_width, @@ -103,7 +103,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv) return -EINVAL; } - if (((uint32_t)ti->len) & (chunk_size - 1)) { + if (ti->len & (chunk_size - 1)) { ti->error = "dm-stripe: Target length not divisible by " "chunk size"; return -EINVAL; @@ -201,10 +201,11 @@ static int stripe_status(struct dm_target *ti, break; case STATUSTYPE_TABLE: - DMEMIT("%d " SECTOR_FORMAT, sc->stripes, sc->chunk_mask + 1); + DMEMIT("%d %llu", sc->stripes, + (unsigned long long)sc->chunk_mask + 1); for (i = 0; i < sc->stripes; i++) - DMEMIT(" %s " SECTOR_FORMAT, sc->stripe[i].dev->name, - sc->stripe[i].physical_start); + DMEMIT(" %s %llu", sc->stripe[i].dev->name, + (unsigned long long)sc->stripe[i].physical_start); break; } return 0; diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 9b1e2f5ca63..8f56a54cf0c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -14,6 +14,7 @@ #include <linux/ctype.h> #include <linux/slab.h> #include <linux/interrupt.h> +#include <linux/mutex.h> #include <asm/atomic.h> #define MAX_DEPTH 16 @@ -22,6 +23,7 @@ #define CHILDREN_PER_NODE (KEYS_PER_NODE + 1) struct dm_table { + struct mapped_device *md; atomic_t holders; /* btree table */ @@ -97,6 +99,8 @@ static void combine_restrictions_low(struct io_restrictions *lhs, lhs->seg_boundary_mask = min_not_zero(lhs->seg_boundary_mask, rhs->seg_boundary_mask); + + lhs->no_cluster |= rhs->no_cluster; } /* @@ -204,7 +208,8 @@ static int alloc_targets(struct dm_table *t, unsigned int num) return 0; } -int dm_table_create(struct dm_table **result, int mode, unsigned num_targets) +int dm_table_create(struct dm_table **result, int mode, + unsigned num_targets, struct mapped_device *md) { struct dm_table *t = kmalloc(sizeof(*t), GFP_KERNEL); @@ -227,6 +232,7 @@ int dm_table_create(struct dm_table **result, int mode, unsigned num_targets) } t->mode = mode; + t->md = md; *result = t; return 0; } @@ -345,20 +351,19 @@ static struct dm_dev *find_device(struct list_head *l, dev_t dev) /* * Open a device so we can use it as a map destination. */ -static int open_dev(struct dm_dev *d, dev_t dev) +static int open_dev(struct dm_dev *d, dev_t dev, struct mapped_device *md) { static char *_claim_ptr = "I belong to device-mapper"; struct block_device *bdev; int r; - if (d->bdev) - BUG(); + BUG_ON(d->bdev); bdev = open_by_devnum(dev, d->mode); if (IS_ERR(bdev)) return PTR_ERR(bdev); - r = bd_claim(bdev, _claim_ptr); + r = bd_claim_by_disk(bdev, _claim_ptr, dm_disk(md)); if (r) blkdev_put(bdev); else @@ -369,12 +374,12 @@ static int open_dev(struct dm_dev *d, dev_t dev) /* * Close a device that we've been using. */ -static void close_dev(struct dm_dev *d) +static void close_dev(struct dm_dev *d, struct mapped_device *md) { if (!d->bdev) return; - bd_release(d->bdev); + bd_release_from_disk(d->bdev, dm_disk(md)); blkdev_put(d->bdev); d->bdev = NULL; } @@ -395,7 +400,7 @@ static int check_device_area(struct dm_dev *dd, sector_t start, sector_t len) * careful to leave things as they were if we fail to reopen the * device. */ -static int upgrade_mode(struct dm_dev *dd, int new_mode) +static int upgrade_mode(struct dm_dev *dd, int new_mode, struct mapped_device *md) { int r; struct dm_dev dd_copy; @@ -405,9 +410,9 @@ static int upgrade_mode(struct dm_dev *dd, int new_mode) dd->mode |= new_mode; dd->bdev = NULL; - r = open_dev(dd, dev); + r = open_dev(dd, dev, md); if (!r) - close_dev(&dd_copy); + close_dev(&dd_copy, md); else *dd = dd_copy; @@ -427,8 +432,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti, struct dm_dev *dd; unsigned int major, minor; - if (!t) - BUG(); + BUG_ON(!t); if (sscanf(path, "%u:%u", &major, &minor) == 2) { /* Extract the major/minor numbers */ @@ -450,7 +454,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti, dd->mode = mode; dd->bdev = NULL; - if ((r = open_dev(dd, dev))) { + if ((r = open_dev(dd, dev, t->md))) { kfree(dd); return r; } @@ -461,7 +465,7 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti, list_add(&dd->list, &t->devices); } else if (dd->mode != (mode | dd->mode)) { - r = upgrade_mode(dd, mode); + r = upgrade_mode(dd, mode, t->md); if (r) return r; } @@ -525,6 +529,8 @@ int dm_get_device(struct dm_target *ti, const char *path, sector_t start, rs->seg_boundary_mask = min_not_zero(rs->seg_boundary_mask, q->seg_boundary_mask); + + rs->no_cluster |= !test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); } return r; @@ -536,7 +542,7 @@ int dm_get_device(struct dm_target *ti, const char *path, sector_t start, void dm_put_device(struct dm_target *ti, struct dm_dev *dd) { if (atomic_dec_and_test(&dd->count)) { - close_dev(dd); + close_dev(dd, ti->table->md); list_del(&dd->list); kfree(dd); } @@ -765,14 +771,14 @@ int dm_table_complete(struct dm_table *t) return r; } -static DECLARE_MUTEX(_event_lock); +static DEFINE_MUTEX(_event_lock); void dm_table_event_callback(struct dm_table *t, void (*fn)(void *), void *context) { - down(&_event_lock); + mutex_lock(&_event_lock); t->event_fn = fn; t->event_context = context; - up(&_event_lock); + mutex_unlock(&_event_lock); } void dm_table_event(struct dm_table *t) @@ -783,10 +789,10 @@ void dm_table_event(struct dm_table *t) */ BUG_ON(in_interrupt()); - down(&_event_lock); + mutex_lock(&_event_lock); if (t->event_fn) t->event_fn(t->event_context); - up(&_event_lock); + mutex_unlock(&_event_lock); } sector_t dm_table_get_size(struct dm_table *t) @@ -834,6 +840,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q) q->hardsect_size = t->limits.hardsect_size; q->max_segment_size = t->limits.max_segment_size; q->seg_boundary_mask = t->limits.seg_boundary_mask; + if (t->limits.no_cluster) + q->queue_flags &= ~(1 << QUEUE_FLAG_CLUSTER); + else + q->queue_flags |= (1 << QUEUE_FLAG_CLUSTER); + } unsigned int dm_table_get_num_targets(struct dm_table *t) @@ -945,12 +956,20 @@ int dm_table_flush_all(struct dm_table *t) return ret; } +struct mapped_device *dm_table_get_md(struct dm_table *t) +{ + dm_get(t->md); + + return t->md; +} + EXPORT_SYMBOL(dm_vcalloc); EXPORT_SYMBOL(dm_get_device); EXPORT_SYMBOL(dm_put_device); EXPORT_SYMBOL(dm_table_event); EXPORT_SYMBOL(dm_table_get_size); EXPORT_SYMBOL(dm_table_get_mode); +EXPORT_SYMBOL(dm_table_get_md); EXPORT_SYMBOL(dm_table_put); EXPORT_SYMBOL(dm_table_get); EXPORT_SYMBOL(dm_table_unplug_all); diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 8c82373f7ff..4d710b7a133 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -10,6 +10,7 @@ #include <linux/init.h> #include <linux/module.h> +#include <linux/mutex.h> #include <linux/moduleparam.h> #include <linux/blkpg.h> #include <linux/bio.h> @@ -17,6 +18,7 @@ #include <linux/mempool.h> #include <linux/slab.h> #include <linux/idr.h> +#include <linux/hdreg.h> #include <linux/blktrace_api.h> static const char *_name = DM_NAME; @@ -69,6 +71,7 @@ struct mapped_device { request_queue_t *queue; struct gendisk *disk; + char name[16]; void *interface_ptr; @@ -101,6 +104,9 @@ struct mapped_device { */ struct super_block *frozen_sb; struct block_device *suspended_bdev; + + /* forced geometry settings */ + struct hd_geometry geometry; }; #define MIN_IOS 256 @@ -226,6 +232,13 @@ static int dm_blk_close(struct inode *inode, struct file *file) return 0; } +static int dm_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo) +{ + struct mapped_device *md = bdev->bd_disk->private_data; + + return dm_get_geometry(md, geo); +} + static inline struct dm_io *alloc_io(struct mapped_device *md) { return mempool_alloc(md->io_pool, GFP_NOIO); @@ -312,6 +325,33 @@ struct dm_table *dm_get_table(struct mapped_device *md) return t; } +/* + * Get the geometry associated with a dm device + */ +int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo) +{ + *geo = md->geometry; + + return 0; +} + +/* + * Set the geometry of a device. + */ +int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo) +{ + sector_t sz = (sector_t)geo->cylinders * geo->heads * geo->sectors; + + if (geo->start > sz) { + DMWARN("Start sector is beyond the geometry limits."); + return -EINVAL; + } + + md->geometry = *geo; + + return 0; +} + /*----------------------------------------------------------------- * CRUD START: * A more elegant soln is in the works that uses the queue @@ -704,14 +744,14 @@ static int dm_any_congested(void *congested_data, int bdi_bits) /*----------------------------------------------------------------- * An IDR is used to keep track of allocated minor numbers. *---------------------------------------------------------------*/ -static DECLARE_MUTEX(_minor_lock); +static DEFINE_MUTEX(_minor_lock); static DEFINE_IDR(_minor_idr); static void free_minor(unsigned int minor) { - down(&_minor_lock); + mutex_lock(&_minor_lock); idr_remove(&_minor_idr, minor); - up(&_minor_lock); + mutex_unlock(&_minor_lock); } /* @@ -724,7 +764,7 @@ static int specific_minor(struct mapped_device *md, unsigned int minor) if (minor >= (1 << MINORBITS)) return -EINVAL; - down(&_minor_lock); + mutex_lock(&_minor_lock); if (idr_find(&_minor_idr, minor)) { r = -EBUSY; @@ -749,7 +789,7 @@ static int specific_minor(struct mapped_device *md, unsigned int minor) } out: - up(&_minor_lock); + mutex_unlock(&_minor_lock); return r; } @@ -758,7 +798,7 @@ static int next_free_minor(struct mapped_device *md, unsigned int *minor) int r; unsigned int m; - down(&_minor_lock); + mutex_lock(&_minor_lock); r = idr_pre_get(&_minor_idr, GFP_KERNEL); if (!r) { @@ -780,7 +820,7 @@ static int next_free_minor(struct mapped_device *md, unsigned int *minor) *minor = m; out: - up(&_minor_lock); + mutex_unlock(&_minor_lock); return r; } @@ -823,13 +863,11 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) md->queue->unplug_fn = dm_unplug_all; md->queue->issue_flush_fn = dm_flush_all; - md->io_pool = mempool_create(MIN_IOS, mempool_alloc_slab, - mempool_free_slab, _io_cache); + md->io_pool = mempool_create_slab_pool(MIN_IOS, _io_cache); if (!md->io_pool) goto bad2; - md->tio_pool = mempool_create(MIN_IOS, mempool_alloc_slab, - mempool_free_slab, _tio_cache); + md->tio_pool = mempool_create_slab_pool(MIN_IOS, _tio_cache); if (!md->tio_pool) goto bad3; @@ -844,6 +882,7 @@ static struct mapped_device *alloc_dev(unsigned int minor, int persistent) md->disk->private_data = md; sprintf(md->disk->disk_name, "dm-%d", minor); add_disk(md->disk); + format_dev_t(md->name, MKDEV(_major, minor)); atomic_set(&md->pending, 0); init_waitqueue_head(&md->wait); @@ -906,6 +945,13 @@ static int __bind(struct mapped_device *md, struct dm_table *t) sector_t size; size = dm_table_get_size(t); + + /* + * Wipe any geometry if the size of the table changed. + */ + if (size != get_capacity(md->disk)) + memset(&md->geometry, 0, sizeof(md->geometry)); + __set_size(md, size); if (size == 0) return 0; @@ -969,13 +1015,13 @@ static struct mapped_device *dm_find_md(dev_t dev) if (MAJOR(dev) != _major || minor >= (1 << MINORBITS)) return NULL; - down(&_minor_lock); + mutex_lock(&_minor_lock); md = idr_find(&_minor_idr, minor); if (!md || (dm_disk(md)->first_minor != minor)) md = NULL; - up(&_minor_lock); + mutex_unlock(&_minor_lock); return md; } @@ -990,15 +1036,9 @@ struct mapped_device *dm_get_md(dev_t dev) return md; } -void *dm_get_mdptr(dev_t dev) +void *dm_get_mdptr(struct mapped_device *md) { - struct mapped_device *md; - void *mdptr = NULL; - - md = dm_find_md(dev); - if (md) - mdptr = md->interface_ptr; - return mdptr; + return md->interface_ptr; } void dm_set_mdptr(struct mapped_device *md, void *ptr) @@ -1013,18 +1053,18 @@ void dm_get(struct mapped_device *md) void dm_put(struct mapped_device *md) { - struct dm_table *map = dm_get_table(md); + struct dm_table *map; if (atomic_dec_and_test(&md->holders)) { + map = dm_get_table(md); if (!dm_suspended(md)) { dm_table_presuspend_targets(map); dm_table_postsuspend_targets(map); } __unbind(md); + dm_table_put(map); free_dev(md); } - - dm_table_put(map); } /* @@ -1109,6 +1149,7 @@ int dm_suspend(struct mapped_device *md, int do_lockfs) { struct dm_table *map = NULL; DECLARE_WAITQUEUE(wait, current); + struct bio *def; int r = -EINVAL; down(&md->suspend_lock); @@ -1168,9 +1209,11 @@ int dm_suspend(struct mapped_device *md, int do_lockfs) /* were we interrupted ? */ r = -EINTR; if (atomic_read(&md->pending)) { + clear_bit(DMF_BLOCK_IO, &md->flags); + def = bio_list_get(&md->deferred); + __flush_deferred_io(md, def); up_write(&md->io_lock); unlock_fs(md); - clear_bit(DMF_BLOCK_IO, &md->flags); goto out; } up_write(&md->io_lock); @@ -1264,6 +1307,7 @@ int dm_suspended(struct mapped_device *md) static struct block_device_operations dm_blk_dops = { .open = dm_blk_open, .release = dm_blk_close, + .getgeo = dm_blk_getgeo, .owner = THIS_MODULE }; diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 4eaf075da21..fd90bc8f9e4 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -14,6 +14,7 @@ #include <linux/device-mapper.h> #include <linux/list.h> #include <linux/blkdev.h> +#include <linux/hdreg.h> #define DM_NAME "device-mapper" #define DMWARN(f, x...) printk(KERN_WARNING DM_NAME ": " f "\n" , ## x) @@ -23,16 +24,6 @@ #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ 0 : scnprintf(result + sz, maxlen - sz, x)) -/* - * FIXME: I think this should be with the definition of sector_t - * in types.h. - */ -#ifdef CONFIG_LBD -#define SECTOR_FORMAT "%llu" -#else -#define SECTOR_FORMAT "%lu" -#endif - #define SECTOR_SHIFT 9 /* @@ -57,7 +48,7 @@ struct mapped_device; int dm_create(struct mapped_device **md); int dm_create_with_minor(unsigned int minor, struct mapped_device **md); void dm_set_mdptr(struct mapped_device *md, void *ptr); -void *dm_get_mdptr(dev_t dev); +void *dm_get_mdptr(struct mapped_device *md); struct mapped_device *dm_get_md(dev_t dev); /* @@ -95,11 +86,18 @@ int dm_wait_event(struct mapped_device *md, int event_nr); struct gendisk *dm_disk(struct mapped_device *md); int dm_suspended(struct mapped_device *md); +/* + * Geometry functions. + */ +int dm_get_geometry(struct mapped_device *md, struct hd_geometry *geo); +int dm_set_geometry(struct mapped_device *md, struct hd_geometry *geo); + /*----------------------------------------------------------------- * Functions for manipulating a table. Tables are also reference * counted. *---------------------------------------------------------------*/ -int dm_table_create(struct dm_table **result, int mode, unsigned num_targets); +int dm_table_create(struct dm_table **result, int mode, + unsigned num_targets, struct mapped_device *md); void dm_table_get(struct dm_table *t); void dm_table_put(struct dm_table *t); @@ -117,6 +115,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q); unsigned int dm_table_get_num_targets(struct dm_table *t); struct list_head *dm_table_get_devices(struct dm_table *t); int dm_table_get_mode(struct dm_table *t); +struct mapped_device *dm_table_get_md(struct dm_table *t); void dm_table_presuspend_targets(struct dm_table *t); void dm_table_postsuspend_targets(struct dm_table *t); void dm_table_resume_targets(struct dm_table *t); diff --git a/drivers/md/kcopyd.c b/drivers/md/kcopyd.c index 8b3515f394a..72480a48d88 100644 --- a/drivers/md/kcopyd.c +++ b/drivers/md/kcopyd.c @@ -22,6 +22,7 @@ #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/workqueue.h> +#include <linux/mutex.h> #include "kcopyd.h" @@ -44,6 +45,9 @@ struct kcopyd_client { struct page_list *pages; unsigned int nr_pages; unsigned int nr_free_pages; + + wait_queue_head_t destroyq; + atomic_t nr_jobs; }; static struct page_list *alloc_pl(void) @@ -227,8 +231,7 @@ static int jobs_init(void) if (!_job_cache) return -ENOMEM; - _job_pool = mempool_create(MIN_JOBS, mempool_alloc_slab, - mempool_free_slab, _job_cache); + _job_pool = mempool_create_slab_pool(MIN_JOBS, _job_cache); if (!_job_pool) { kmem_cache_destroy(_job_cache); return -ENOMEM; @@ -293,10 +296,15 @@ static int run_complete_job(struct kcopyd_job *job) int read_err = job->read_err; unsigned int write_err = job->write_err; kcopyd_notify_fn fn = job->fn; + struct kcopyd_client *kc = job->kc; - kcopyd_put_pages(job->kc, job->pages); + kcopyd_put_pages(kc, job->pages); mempool_free(job, _job_pool); fn(read_err, write_err, context); + + if (atomic_dec_and_test(&kc->nr_jobs)) + wake_up(&kc->destroyq); + return 0; } @@ -431,6 +439,7 @@ static void do_work(void *ignored) */ static void dispatch_job(struct kcopyd_job *job) { + atomic_inc(&job->kc->nr_jobs); push(&_pages_jobs, job); wake(); } @@ -573,68 +582,68 @@ int kcopyd_cancel(struct kcopyd_job *job, int block) /*----------------------------------------------------------------- * Unit setup *---------------------------------------------------------------*/ -static DECLARE_MUTEX(_client_lock); +static DEFINE_MUTEX(_client_lock); static LIST_HEAD(_clients); static void client_add(struct kcopyd_client *kc) { - down(&_client_lock); + mutex_lock(&_client_lock); list_add(&kc->list, &_clients); - up(&_client_lock); + mutex_unlock(&_client_lock); } static void client_del(struct kcopyd_client *kc) { - down(&_client_lock); + mutex_lock(&_client_lock); list_del(&kc->list); - up(&_client_lock); + mutex_unlock(&_client_lock); } -static DECLARE_MUTEX(kcopyd_init_lock); +static DEFINE_MUTEX(kcopyd_init_lock); static int kcopyd_clients = 0; static int kcopyd_init(void) { int r; - down(&kcopyd_init_lock); + mutex_lock(&kcopyd_init_lock); if (kcopyd_clients) { /* Already initialized. */ kcopyd_clients++; - up(&kcopyd_init_lock); + mutex_unlock(&kcopyd_init_lock); return 0; } r = jobs_init(); if (r) { - up(&kcopyd_init_lock); + mutex_unlock(&kcopyd_init_lock); return r; } _kcopyd_wq = create_singlethread_workqueue("kcopyd"); if (!_kcopyd_wq) { jobs_exit(); - up(&kcopyd_init_lock); + mutex_unlock(&kcopyd_init_lock); return -ENOMEM; } kcopyd_clients++; INIT_WORK(&_kcopyd_work, do_work, NULL); - up(&kcopyd_init_lock); + mutex_unlock(&kcopyd_init_lock); return 0; } static void kcopyd_exit(void) { - down(&kcopyd_init_lock); + mutex_lock(&kcopyd_init_lock); kcopyd_clients--; if (!kcopyd_clients) { jobs_exit(); destroy_workqueue(_kcopyd_wq); _kcopyd_wq = NULL; } - up(&kcopyd_init_lock); + mutex_unlock(&kcopyd_init_lock); } int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result) @@ -670,6 +679,9 @@ int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result) return r; } + init_waitqueue_head(&kc->destroyq); + atomic_set(&kc->nr_jobs, 0); + client_add(kc); *result = kc; return 0; @@ -677,6 +689,9 @@ int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result) void kcopyd_client_destroy(struct kcopyd_client *kc) { + /* Wait for completion of all jobs submitted by this client. */ + wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs)); + dm_io_put(kc->nr_pages); client_free_pages(kc); client_del(kc); diff --git a/drivers/md/md.c b/drivers/md/md.c index 5ed2228745c..039e071c100 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -43,6 +43,7 @@ #include <linux/buffer_head.h> /* for invalidate_bdev */ #include <linux/suspend.h> #include <linux/poll.h> +#include <linux/mutex.h> #include <linux/init.h> @@ -158,11 +159,12 @@ static int start_readonly; */ static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters); static atomic_t md_event_count; -static void md_new_event(mddev_t *mddev) +void md_new_event(mddev_t *mddev) { atomic_inc(&md_event_count); wake_up(&md_event_waiters); } +EXPORT_SYMBOL_GPL(md_new_event); /* * Enables to iterate over all existing md arrays @@ -253,7 +255,7 @@ static mddev_t * mddev_find(dev_t unit) else new->md_minor = MINOR(unit) >> MdpMinorShift; - init_MUTEX(&new->reconfig_sem); + mutex_init(&new->reconfig_mutex); INIT_LIST_HEAD(&new->disks); INIT_LIST_HEAD(&new->all_mddevs); init_timer(&new->safemode_timer); @@ -266,6 +268,7 @@ static mddev_t * mddev_find(dev_t unit) kfree(new); return NULL; } + set_bit(QUEUE_FLAG_CLUSTER, &new->queue->queue_flags); blk_queue_make_request(new->queue, md_fail_request); @@ -274,22 +277,22 @@ static mddev_t * mddev_find(dev_t unit) static inline int mddev_lock(mddev_t * mddev) { - return down_interruptible(&mddev->reconfig_sem); + return mutex_lock_interruptible(&mddev->reconfig_mutex); } static inline void mddev_lock_uninterruptible(mddev_t * mddev) { - down(&mddev->reconfig_sem); + mutex_lock(&mddev->reconfig_mutex); } static inline int mddev_trylock(mddev_t * mddev) { - return down_trylock(&mddev->reconfig_sem); + return mutex_trylock(&mddev->reconfig_mutex); } static inline void mddev_unlock(mddev_t * mddev) { - up(&mddev->reconfig_sem); + mutex_unlock(&mddev->reconfig_mutex); md_wakeup_thread(mddev->thread); } @@ -660,7 +663,8 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version } if (sb->major_version != 0 || - sb->minor_version != 90) { + sb->minor_version < 90 || + sb->minor_version > 91) { printk(KERN_WARNING "Bad version number %d.%d on %s\n", sb->major_version, sb->minor_version, b); @@ -745,6 +749,20 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev) mddev->bitmap_offset = 0; mddev->default_bitmap_offset = MD_SB_BYTES >> 9; + if (mddev->minor_version >= 91) { + mddev->reshape_position = sb->reshape_position; + mddev->delta_disks = sb->delta_disks; + mddev->new_level = sb->new_level; + mddev->new_layout = sb->new_layout; + mddev->new_chunk = sb->new_chunk; + } else { + mddev->reshape_position = MaxSector; + mddev->delta_disks = 0; + mddev->new_level = mddev->level; + mddev->new_layout = mddev->layout; + mddev->new_chunk = mddev->chunk_size; + } + if (sb->state & (1<<MD_SB_CLEAN)) mddev->recovery_cp = MaxSector; else { @@ -764,7 +782,8 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev) if (sb->state & (1<<MD_SB_BITMAP_PRESENT) && mddev->bitmap_file == NULL) { - if (mddev->level != 1 && mddev->level != 5 && mddev->level != 6 + if (mddev->level != 1 && mddev->level != 4 + && mddev->level != 5 && mddev->level != 6 && mddev->level != 10) { /* FIXME use a better test */ printk(KERN_WARNING "md: bitmaps not supported for this level.\n"); @@ -838,7 +857,6 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev) sb->md_magic = MD_SB_MAGIC; sb->major_version = mddev->major_version; - sb->minor_version = mddev->minor_version; sb->patch_version = mddev->patch_version; sb->gvalid_words = 0; /* ignored */ memcpy(&sb->set_uuid0, mddev->uuid+0, 4); @@ -857,6 +875,17 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev) sb->events_hi = (mddev->events>>32); sb->events_lo = (u32)mddev->events; + if (mddev->reshape_position == MaxSector) + sb->minor_version = 90; + else { + sb->minor_version = 91; + sb->reshape_position = mddev->reshape_position; + sb->new_level = mddev->new_level; + sb->delta_disks = mddev->delta_disks; + sb->new_layout = mddev->new_layout; + sb->new_chunk = mddev->new_chunk; + } + mddev->minor_version = sb->minor_version; if (mddev->in_sync) { sb->recovery_cp = mddev->recovery_cp; @@ -893,10 +922,9 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev) d->raid_disk = rdev2->raid_disk; else d->raid_disk = rdev2->desc_nr; /* compatibility */ - if (test_bit(Faulty, &rdev2->flags)) { + if (test_bit(Faulty, &rdev2->flags)) d->state = (1<<MD_DISK_FAULTY); - failed++; - } else if (test_bit(In_sync, &rdev2->flags)) { + else if (test_bit(In_sync, &rdev2->flags)) { d->state = (1<<MD_DISK_ACTIVE); d->state |= (1<<MD_DISK_SYNC); active++; @@ -1102,6 +1130,20 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev) } mddev->bitmap_offset = (__s32)le32_to_cpu(sb->bitmap_offset); } + if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE)) { + mddev->reshape_position = le64_to_cpu(sb->reshape_position); + mddev->delta_disks = le32_to_cpu(sb->delta_disks); + mddev->new_level = le32_to_cpu(sb->new_level); + mddev->new_layout = le32_to_cpu(sb->new_layout); + mddev->new_chunk = le32_to_cpu(sb->new_chunk)<<9; + } else { + mddev->reshape_position = MaxSector; + mddev->delta_disks = 0; + mddev->new_level = mddev->level; + mddev->new_layout = mddev->layout; + mddev->new_chunk = mddev->chunk_size; + } + } else if (mddev->pers == NULL) { /* Insist of good event counter while assembling */ __u64 ev1 = le64_to_cpu(sb->events); @@ -1173,6 +1215,14 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev) sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset); sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); } + if (mddev->reshape_position != MaxSector) { + sb->feature_map |= cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE); + sb->reshape_position = cpu_to_le64(mddev->reshape_position); + sb->new_layout = cpu_to_le32(mddev->new_layout); + sb->delta_disks = cpu_to_le32(mddev->delta_disks); + sb->new_level = cpu_to_le32(mddev->new_level); + sb->new_chunk = cpu_to_le32(mddev->new_chunk>>9); + } max_dev = 0; ITERATE_RDEV(mddev,rdev2,tmp) @@ -1301,6 +1351,7 @@ static int bind_rdev_to_array(mdk_rdev_t * rdev, mddev_t * mddev) else ko = &rdev->bdev->bd_disk->kobj; sysfs_create_link(&rdev->kobj, ko, "block"); + bd_claim_by_disk(rdev->bdev, rdev, mddev->gendisk); return 0; } @@ -1311,6 +1362,7 @@ static void unbind_rdev_from_array(mdk_rdev_t * rdev) MD_BUG(); return; } + bd_release_from_disk(rdev->bdev, rdev->mddev->gendisk); list_del_init(&rdev->same_set); printk(KERN_INFO "md: unbind<%s>\n", bdevname(rdev->bdev,b)); rdev->mddev = NULL; @@ -1493,7 +1545,7 @@ static void sync_sbs(mddev_t * mddev) } } -static void md_update_sb(mddev_t * mddev) +void md_update_sb(mddev_t * mddev) { int err; struct list_head *tmp; @@ -1570,6 +1622,7 @@ repeat: wake_up(&mddev->sb_wait); } +EXPORT_SYMBOL_GPL(md_update_sb); /* words written to sysfs files may, or my not, be \n terminated. * We want to accept with case. For this we use cmd_match. @@ -2162,7 +2215,9 @@ action_show(mddev_t *mddev, char *page) char *type = "idle"; if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) || test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) { - if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { + if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) + type = "reshape"; + else if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) { if (!test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) type = "resync"; else if (test_bit(MD_RECOVERY_CHECK, &mddev->recovery)) @@ -2193,7 +2248,14 @@ action_store(mddev_t *mddev, const char *page, size_t len) return -EBUSY; else if (cmd_match(page, "resync") || cmd_match(page, "recover")) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); - else { + else if (cmd_match(page, "reshape")) { + int err; + if (mddev->pers->start_reshape == NULL) + return -EINVAL; + err = mddev->pers->start_reshape(mddev); + if (err) + return err; + } else { if (cmd_match(page, "check")) set_bit(MD_RECOVERY_CHECK, &mddev->recovery); else if (cmd_match(page, "repair")) @@ -2304,6 +2366,63 @@ sync_completed_show(mddev_t *mddev, char *page) static struct md_sysfs_entry md_sync_completed = __ATTR_RO(sync_completed); +static ssize_t +suspend_lo_show(mddev_t *mddev, char *page) +{ + return sprintf(page, "%llu\n", (unsigned long long)mddev->suspend_lo); +} + +static ssize_t +suspend_lo_store(mddev_t *mddev, const char *buf, size_t len) +{ + char *e; + unsigned long long new = simple_strtoull(buf, &e, 10); + + if (mddev->pers->quiesce == NULL) + return -EINVAL; + if (buf == e || (*e && *e != '\n')) + return -EINVAL; + if (new >= mddev->suspend_hi || + (new > mddev->suspend_lo && new < mddev->suspend_hi)) { + mddev->suspend_lo = new; + mddev->pers->quiesce(mddev, 2); + return len; + } else + return -EINVAL; +} +static struct md_sysfs_entry md_suspend_lo = +__ATTR(suspend_lo, S_IRUGO|S_IWUSR, suspend_lo_show, suspend_lo_store); + + +static ssize_t +suspend_hi_show(mddev_t *mddev, char *page) +{ + return sprintf(page, "%llu\n", (unsigned long long)mddev->suspend_hi); +} + +static ssize_t +suspend_hi_store(mddev_t *mddev, const char *buf, size_t len) +{ + char *e; + unsigned long long new = simple_strtoull(buf, &e, 10); + + if (mddev->pers->quiesce == NULL) + return -EINVAL; + if (buf == e || (*e && *e != '\n')) + return -EINVAL; + if ((new <= mddev->suspend_lo && mddev->suspend_lo >= mddev->suspend_hi) || + (new > mddev->suspend_lo && new > mddev->suspend_hi)) { + mddev->suspend_hi = new; + mddev->pers->quiesce(mddev, 1); + mddev->pers->quiesce(mddev, 0); + return len; + } else + return -EINVAL; +} +static struct md_sysfs_entry md_suspend_hi = +__ATTR(suspend_hi, S_IRUGO|S_IWUSR, suspend_hi_show, suspend_hi_store); + + static struct attribute *md_default_attrs[] = { &md_level.attr, &md_raid_disks.attr, @@ -2321,6 +2440,8 @@ static struct attribute *md_redundancy_attrs[] = { &md_sync_max.attr, &md_sync_speed.attr, &md_sync_completed.attr, + &md_suspend_lo.attr, + &md_suspend_hi.attr, NULL, }; static struct attribute_group md_redundancy_group = { @@ -2380,7 +2501,7 @@ int mdp_major = 0; static struct kobject *md_probe(dev_t dev, int *part, void *data) { - static DECLARE_MUTEX(disks_sem); + static DEFINE_MUTEX(disks_mutex); mddev_t *mddev = mddev_find(dev); struct gendisk *disk; int partitioned = (MAJOR(dev) != MD_MAJOR); @@ -2390,15 +2511,15 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) if (!mddev) return NULL; - down(&disks_sem); + mutex_lock(&disks_mutex); if (mddev->gendisk) { - up(&disks_sem); + mutex_unlock(&disks_mutex); mddev_put(mddev); return NULL; } disk = alloc_disk(1 << shift); if (!disk) { - up(&disks_sem); + mutex_unlock(&disks_mutex); mddev_put(mddev); return NULL; } @@ -2416,7 +2537,7 @@ static struct kobject *md_probe(dev_t dev, int *part, void *data) disk->queue = mddev->queue; add_disk(disk); mddev->gendisk = disk; - up(&disks_sem); + mutex_unlock(&disks_mutex); mddev->kobj.parent = &disk->kobj; mddev->kobj.k_name = NULL; snprintf(mddev->kobj.name, KOBJ_NAME_LEN, "%s", "md"); @@ -2539,6 +2660,14 @@ static int do_md_run(mddev_t * mddev) mddev->level = pers->level; strlcpy(mddev->clevel, pers->name, sizeof(mddev->clevel)); + if (mddev->reshape_position != MaxSector && + pers->start_reshape == NULL) { + /* This personality cannot handle reshaping... */ + mddev->pers = NULL; + module_put(pers->owner); + return -EINVAL; + } + mddev->recovery = 0; mddev->resync_max_sectors = mddev->size << 1; /* may be over-ridden by personality */ mddev->barriers_work = 1; @@ -2772,7 +2901,6 @@ static void autorun_array(mddev_t *mddev) */ static void autorun_devices(int part) { - struct list_head candidates; struct list_head *tmp; mdk_rdev_t *rdev0, *rdev; mddev_t *mddev; @@ -2781,6 +2909,7 @@ static void autorun_devices(int part) printk(KERN_INFO "md: autorun ...\n"); while (!list_empty(&pending_raid_disks)) { dev_t dev; + LIST_HEAD(candidates); rdev0 = list_entry(pending_raid_disks.next, mdk_rdev_t, same_set); @@ -3427,11 +3556,18 @@ static int set_array_info(mddev_t * mddev, mdu_array_info_t *info) mddev->default_bitmap_offset = MD_SB_BYTES >> 9; mddev->bitmap_offset = 0; + mddev->reshape_position = MaxSector; + /* * Generate a 128 bit UUID */ get_random_bytes(mddev->uuid, 16); + mddev->new_level = mddev->level; + mddev->new_chunk = mddev->chunk_size; + mddev->new_layout = mddev->layout; + mddev->delta_disks = 0; + return 0; } @@ -3440,6 +3576,7 @@ static int update_size(mddev_t *mddev, unsigned long size) mdk_rdev_t * rdev; int rv; struct list_head *tmp; + int fit = (size == 0); if (mddev->pers->resize == NULL) return -EINVAL; @@ -3457,7 +3594,6 @@ static int update_size(mddev_t *mddev, unsigned long size) return -EBUSY; ITERATE_RDEV(mddev,rdev,tmp) { sector_t avail; - int fit = (size == 0); if (rdev->sb_offset > rdev->data_offset) avail = (rdev->sb_offset*2) - rdev->data_offset; else @@ -3487,14 +3623,16 @@ static int update_raid_disks(mddev_t *mddev, int raid_disks) { int rv; /* change the number of raid disks */ - if (mddev->pers->reshape == NULL) + if (mddev->pers->check_reshape == NULL) return -EINVAL; if (raid_disks <= 0 || raid_disks >= mddev->max_disks) return -EINVAL; - if (mddev->sync_thread) + if (mddev->sync_thread || mddev->reshape_position != MaxSector) return -EBUSY; - rv = mddev->pers->reshape(mddev, raid_disks); + mddev->delta_disks = raid_disks - mddev->raid_disks; + + rv = mddev->pers->check_reshape(mddev); return rv; } @@ -4041,7 +4179,10 @@ static void status_unused(struct seq_file *seq) static void status_resync(struct seq_file *seq, mddev_t * mddev) { - unsigned long max_blocks, resync, res, dt, db, rt; + sector_t max_blocks, resync, res; + unsigned long dt, db, rt; + int scale; + unsigned int per_milli; resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active))/2; @@ -4057,9 +4198,22 @@ static void status_resync(struct seq_file *seq, mddev_t * mddev) MD_BUG(); return; } - res = (resync/1024)*1000/(max_blocks/1024 + 1); + /* Pick 'scale' such that (resync>>scale)*1000 will fit + * in a sector_t, and (max_blocks>>scale) will fit in a + * u32, as those are the requirements for sector_div. + * Thus 'scale' must be at least 10 + */ + scale = 10; + if (sizeof(sector_t) > sizeof(unsigned long)) { + while ( max_blocks/2 > (1ULL<<(scale+32))) + scale++; + } + res = (resync>>scale)*1000; + sector_div(res, (u32)((max_blocks>>scale)+1)); + + per_milli = res; { - int i, x = res/50, y = 20-x; + int i, x = per_milli/50, y = 20-x; seq_printf(seq, "["); for (i = 0; i < x; i++) seq_printf(seq, "="); @@ -4068,10 +4222,14 @@ static void status_resync(struct seq_file *seq, mddev_t * mddev) seq_printf(seq, "."); seq_printf(seq, "] "); } - seq_printf(seq, " %s =%3lu.%lu%% (%lu/%lu)", + seq_printf(seq, " %s =%3u.%u%% (%llu/%llu)", + (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)? + "reshape" : (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ? - "resync" : "recovery"), - res/10, res % 10, resync, max_blocks); + "resync" : "recovery")), + per_milli/10, per_milli % 10, + (unsigned long long) resync, + (unsigned long long) max_blocks); /* * We do not want to overflow, so the order of operands and @@ -4085,7 +4243,7 @@ static void status_resync(struct seq_file *seq, mddev_t * mddev) dt = ((jiffies - mddev->resync_mark) / HZ); if (!dt) dt++; db = resync - (mddev->resync_mark_cnt/2); - rt = (dt * ((max_blocks-resync) / (db/100+1)))/100; + rt = (dt * ((unsigned long)(max_blocks-resync) / (db/100+1)))/100; seq_printf(seq, " finish=%lu.%lumin", rt / 60, (rt % 60)/6); @@ -4442,7 +4600,7 @@ static DECLARE_WAIT_QUEUE_HEAD(resync_wait); #define SYNC_MARKS 10 #define SYNC_MARK_STEP (3*HZ) -static void md_do_sync(mddev_t *mddev) +void md_do_sync(mddev_t *mddev) { mddev_t *mddev2; unsigned int currspeed = 0, @@ -4522,7 +4680,9 @@ static void md_do_sync(mddev_t *mddev) */ max_sectors = mddev->resync_max_sectors; mddev->resync_mismatches = 0; - } else + } else if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) + max_sectors = mddev->size << 1; + else /* recovery follows the physical size of devices */ max_sectors = mddev->size << 1; @@ -4658,6 +4818,8 @@ static void md_do_sync(mddev_t *mddev) mddev->pers->sync_request(mddev, max_sectors, &skipped, 1); if (!test_bit(MD_RECOVERY_ERR, &mddev->recovery) && + test_bit(MD_RECOVERY_SYNC, &mddev->recovery) && + !test_bit(MD_RECOVERY_CHECK, &mddev->recovery) && mddev->curr_resync > 2 && mddev->curr_resync >= mddev->recovery_cp) { if (test_bit(MD_RECOVERY_INTR, &mddev->recovery)) { @@ -4675,6 +4837,7 @@ static void md_do_sync(mddev_t *mddev) set_bit(MD_RECOVERY_DONE, &mddev->recovery); md_wakeup_thread(mddev->thread); } +EXPORT_SYMBOL_GPL(md_do_sync); /* @@ -4730,7 +4893,7 @@ void md_check_recovery(mddev_t *mddev) )) return; - if (mddev_trylock(mddev)==0) { + if (mddev_trylock(mddev)) { int spares =0; spin_lock_irq(&mddev->write_lock); @@ -4866,7 +5029,7 @@ static int md_notify_reboot(struct notifier_block *this, printk(KERN_INFO "md: stopping all md devices.\n"); ITERATE_MDDEV(mddev,tmp) - if (mddev_trylock(mddev)==0) + if (mddev_trylock(mddev)) do_md_stop (mddev, 1); /* * certain more exotic SCSI devices are known to be diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 96f7af4ae40..1cc9de44ce8 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -35,18 +35,6 @@ #define NR_RESERVED_BUFS 32 -static void *mp_pool_alloc(gfp_t gfp_flags, void *data) -{ - struct multipath_bh *mpb; - mpb = kzalloc(sizeof(*mpb), gfp_flags); - return mpb; -} - -static void mp_pool_free(void *mpb, void *data) -{ - kfree(mpb); -} - static int multipath_map (multipath_conf_t *conf) { int i, disks = conf->raid_disks; @@ -494,9 +482,8 @@ static int multipath_run (mddev_t *mddev) } mddev->degraded = conf->raid_disks = conf->working_disks; - conf->pool = mempool_create(NR_RESERVED_BUFS, - mp_pool_alloc, mp_pool_free, - NULL); + conf->pool = mempool_create_kzalloc_pool(NR_RESERVED_BUFS, + sizeof(struct multipath_bh)); if (conf->pool == NULL) { printk(KERN_ERR "multipath: couldn't allocate memory for %s\n", diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 5d88329e3c7..3cb0872a845 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1402,6 +1402,9 @@ static void raid1d(mddev_t *mddev) clear_bit(R1BIO_BarrierRetry, &r1_bio->state); clear_bit(R1BIO_Barrier, &r1_bio->state); for (i=0; i < conf->raid_disks; i++) + if (r1_bio->bios[i]) + atomic_inc(&r1_bio->remaining); + for (i=0; i < conf->raid_disks; i++) if (r1_bio->bios[i]) { struct bio_vec *bvec; int j; @@ -1789,6 +1792,11 @@ static int run(mddev_t *mddev) mdname(mddev), mddev->level); goto out; } + if (mddev->reshape_position != MaxSector) { + printk("raid1: %s: reshape_position set but not supported\n", + mdname(mddev)); + goto out; + } /* * copy the already verified devices into our private RAID1 * bookkeeping area. [whatever we allocate in run(), @@ -1971,7 +1979,7 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors) return 0; } -static int raid1_reshape(mddev_t *mddev, int raid_disks) +static int raid1_reshape(mddev_t *mddev) { /* We need to: * 1/ resize the r1bio_pool @@ -1988,10 +1996,22 @@ static int raid1_reshape(mddev_t *mddev, int raid_disks) struct pool_info *newpoolinfo; mirror_info_t *newmirrors; conf_t *conf = mddev_to_conf(mddev); - int cnt; + int cnt, raid_disks; int d, d2; + /* Cannot change chunk_size, layout, or level */ + if (mddev->chunk_size != mddev->new_chunk || + mddev->layout != mddev->new_layout || + mddev->level != mddev->new_level) { + mddev->new_chunk = mddev->chunk_size; + mddev->new_layout = mddev->layout; + mddev->new_level = mddev->level; + return -EINVAL; + } + + raid_disks = mddev->raid_disks + mddev->delta_disks; + if (raid_disks < conf->raid_disks) { cnt=0; for (d= 0; d < conf->raid_disks; d++) @@ -2038,6 +2058,7 @@ static int raid1_reshape(mddev_t *mddev, int raid_disks) mddev->degraded += (raid_disks - conf->raid_disks); conf->raid_disks = mddev->raid_disks = raid_disks; + mddev->delta_disks = 0; conf->last_used = 0; /* just make sure it is in-range */ lower_barrier(conf); @@ -2079,7 +2100,7 @@ static struct mdk_personality raid1_personality = .spare_active = raid1_spare_active, .sync_request = sync_request, .resize = raid1_resize, - .reshape = raid1_reshape, + .check_reshape = raid1_reshape, .quiesce = raid1_quiesce, }; diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 2dba305daf3..dae740adaf6 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -22,6 +22,7 @@ #include <linux/raid/raid5.h> #include <linux/highmem.h> #include <linux/bitops.h> +#include <linux/kthread.h> #include <asm/atomic.h> #include <linux/raid/bitmap.h> @@ -93,11 +94,11 @@ static void __release_stripe(raid5_conf_t *conf, struct stripe_head *sh) if (atomic_read(&conf->preread_active_stripes) < IO_THRESHOLD) md_wakeup_thread(conf->mddev->thread); } - list_add_tail(&sh->lru, &conf->inactive_list); atomic_dec(&conf->active_stripes); - if (!conf->inactive_blocked || - atomic_read(&conf->active_stripes) < (conf->max_nr_stripes*3/4)) + if (!test_bit(STRIPE_EXPANDING, &sh->state)) { + list_add_tail(&sh->lru, &conf->inactive_list); wake_up(&conf->wait_for_stripe); + } } } } @@ -178,10 +179,10 @@ static int grow_buffers(struct stripe_head *sh, int num) static void raid5_build_block (struct stripe_head *sh, int i); -static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx) +static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx, int disks) { raid5_conf_t *conf = sh->raid_conf; - int disks = conf->raid_disks, i; + int i; if (atomic_read(&sh->count) != 0) BUG(); @@ -198,7 +199,9 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx) sh->pd_idx = pd_idx; sh->state = 0; - for (i=disks; i--; ) { + sh->disks = disks; + + for (i = sh->disks; i--; ) { struct r5dev *dev = &sh->dev[i]; if (dev->toread || dev->towrite || dev->written || @@ -215,7 +218,7 @@ static void init_stripe(struct stripe_head *sh, sector_t sector, int pd_idx) insert_hash(conf, sh); } -static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector) +static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector, int disks) { struct stripe_head *sh; struct hlist_node *hn; @@ -223,7 +226,7 @@ static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector) CHECK_DEVLOCK(); PRINTK("__find_stripe, sector %llu\n", (unsigned long long)sector); hlist_for_each_entry(sh, hn, stripe_hash(conf, sector), hash) - if (sh->sector == sector) + if (sh->sector == sector && sh->disks == disks) return sh; PRINTK("__stripe %llu not in cache\n", (unsigned long long)sector); return NULL; @@ -232,8 +235,8 @@ static struct stripe_head *__find_stripe(raid5_conf_t *conf, sector_t sector) static void unplug_slaves(mddev_t *mddev); static void raid5_unplug_device(request_queue_t *q); -static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector, - int pd_idx, int noblock) +static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector, int disks, + int pd_idx, int noblock) { struct stripe_head *sh; @@ -245,7 +248,7 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector wait_event_lock_irq(conf->wait_for_stripe, conf->quiesce == 0, conf->device_lock, /* nothing */); - sh = __find_stripe(conf, sector); + sh = __find_stripe(conf, sector, disks); if (!sh) { if (!conf->inactive_blocked) sh = get_free_stripe(conf); @@ -259,11 +262,11 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector < (conf->max_nr_stripes *3/4) || !conf->inactive_blocked), conf->device_lock, - unplug_slaves(conf->mddev); + unplug_slaves(conf->mddev) ); conf->inactive_blocked = 0; } else - init_stripe(sh, sector, pd_idx); + init_stripe(sh, sector, pd_idx, disks); } else { if (atomic_read(&sh->count)) { if (!list_empty(&sh->lru)) @@ -271,9 +274,8 @@ static struct stripe_head *get_active_stripe(raid5_conf_t *conf, sector_t sector } else { if (!test_bit(STRIPE_HANDLE, &sh->state)) atomic_inc(&conf->active_stripes); - if (list_empty(&sh->lru)) - BUG(); - list_del_init(&sh->lru); + if (!list_empty(&sh->lru)) + list_del_init(&sh->lru); } } } while (sh == NULL); @@ -300,6 +302,7 @@ static int grow_one_stripe(raid5_conf_t *conf) kmem_cache_free(conf->slab_cache, sh); return 0; } + sh->disks = conf->raid_disks; /* we just created an active stripe so... */ atomic_set(&sh->count, 1); atomic_inc(&conf->active_stripes); @@ -313,14 +316,16 @@ static int grow_stripes(raid5_conf_t *conf, int num) kmem_cache_t *sc; int devs = conf->raid_disks; - sprintf(conf->cache_name, "raid5/%s", mdname(conf->mddev)); - - sc = kmem_cache_create(conf->cache_name, + sprintf(conf->cache_name[0], "raid5/%s", mdname(conf->mddev)); + sprintf(conf->cache_name[1], "raid5/%s-alt", mdname(conf->mddev)); + conf->active_name = 0; + sc = kmem_cache_create(conf->cache_name[conf->active_name], sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev), 0, 0, NULL, NULL); if (!sc) return 1; conf->slab_cache = sc; + conf->pool_size = devs; while (num--) { if (!grow_one_stripe(conf)) return 1; @@ -328,6 +333,129 @@ static int grow_stripes(raid5_conf_t *conf, int num) return 0; } +#ifdef CONFIG_MD_RAID5_RESHAPE +static int resize_stripes(raid5_conf_t *conf, int newsize) +{ + /* Make all the stripes able to hold 'newsize' devices. + * New slots in each stripe get 'page' set to a new page. + * + * This happens in stages: + * 1/ create a new kmem_cache and allocate the required number of + * stripe_heads. + * 2/ gather all the old stripe_heads and tranfer the pages across + * to the new stripe_heads. This will have the side effect of + * freezing the array as once all stripe_heads have been collected, + * no IO will be possible. Old stripe heads are freed once their + * pages have been transferred over, and the old kmem_cache is + * freed when all stripes are done. + * 3/ reallocate conf->disks to be suitable bigger. If this fails, + * we simple return a failre status - no need to clean anything up. + * 4/ allocate new pages for the new slots in the new stripe_heads. + * If this fails, we don't bother trying the shrink the + * stripe_heads down again, we just leave them as they are. + * As each stripe_head is processed the new one is released into + * active service. + * + * Once step2 is started, we cannot afford to wait for a write, + * so we use GFP_NOIO allocations. + */ + struct stripe_head *osh, *nsh; + LIST_HEAD(newstripes); + struct disk_info *ndisks; + int err = 0; + kmem_cache_t *sc; + int i; + + if (newsize <= conf->pool_size) + return 0; /* never bother to shrink */ + + /* Step 1 */ + sc = kmem_cache_create(conf->cache_name[1-conf->active_name], + sizeof(struct stripe_head)+(newsize-1)*sizeof(struct r5dev), + 0, 0, NULL, NULL); + if (!sc) + return -ENOMEM; + + for (i = conf->max_nr_stripes; i; i--) { + nsh = kmem_cache_alloc(sc, GFP_KERNEL); + if (!nsh) + break; + + memset(nsh, 0, sizeof(*nsh) + (newsize-1)*sizeof(struct r5dev)); + + nsh->raid_conf = conf; + spin_lock_init(&nsh->lock); + + list_add(&nsh->lru, &newstripes); + } + if (i) { + /* didn't get enough, give up */ + while (!list_empty(&newstripes)) { + nsh = list_entry(newstripes.next, struct stripe_head, lru); + list_del(&nsh->lru); + kmem_cache_free(sc, nsh); + } + kmem_cache_destroy(sc); + return -ENOMEM; + } + /* Step 2 - Must use GFP_NOIO now. + * OK, we have enough stripes, start collecting inactive + * stripes and copying them over + */ + list_for_each_entry(nsh, &newstripes, lru) { + spin_lock_irq(&conf->device_lock); + wait_event_lock_irq(conf->wait_for_stripe, + !list_empty(&conf->inactive_list), + conf->device_lock, + unplug_slaves(conf->mddev) + ); + osh = get_free_stripe(conf); + spin_unlock_irq(&conf->device_lock); + atomic_set(&nsh->count, 1); + for(i=0; i<conf->pool_size; i++) + nsh->dev[i].page = osh->dev[i].page; + for( ; i<newsize; i++) + nsh->dev[i].page = NULL; + kmem_cache_free(conf->slab_cache, osh); + } + kmem_cache_destroy(conf->slab_cache); + + /* Step 3. + * At this point, we are holding all the stripes so the array + * is completely stalled, so now is a good time to resize + * conf->disks. + */ + ndisks = kzalloc(newsize * sizeof(struct disk_info), GFP_NOIO); + if (ndisks) { + for (i=0; i<conf->raid_disks; i++) + ndisks[i] = conf->disks[i]; + kfree(conf->disks); + conf->disks = ndisks; + } else + err = -ENOMEM; + + /* Step 4, return new stripes to service */ + while(!list_empty(&newstripes)) { + nsh = list_entry(newstripes.next, struct stripe_head, lru); + list_del_init(&nsh->lru); + for (i=conf->raid_disks; i < newsize; i++) + if (nsh->dev[i].page == NULL) { + struct page *p = alloc_page(GFP_NOIO); + nsh->dev[i].page = p; + if (!p) + err = -ENOMEM; + } + release_stripe(nsh); + } + /* critical section pass, GFP_NOIO no longer needed */ + + conf->slab_cache = sc; + conf->active_name = 1-conf->active_name; + conf->pool_size = newsize; + return err; +} +#endif + static int drop_one_stripe(raid5_conf_t *conf) { struct stripe_head *sh; @@ -339,7 +467,7 @@ static int drop_one_stripe(raid5_conf_t *conf) return 0; if (atomic_read(&sh->count)) BUG(); - shrink_buffers(sh, conf->raid_disks); + shrink_buffers(sh, conf->pool_size); kmem_cache_free(conf->slab_cache, sh); atomic_dec(&conf->active_stripes); return 1; @@ -360,7 +488,7 @@ static int raid5_end_read_request(struct bio * bi, unsigned int bytes_done, { struct stripe_head *sh = bi->bi_private; raid5_conf_t *conf = sh->raid_conf; - int disks = conf->raid_disks, i; + int disks = sh->disks, i; int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags); if (bi->bi_size) @@ -458,7 +586,7 @@ static int raid5_end_write_request (struct bio *bi, unsigned int bytes_done, { struct stripe_head *sh = bi->bi_private; raid5_conf_t *conf = sh->raid_conf; - int disks = conf->raid_disks, i; + int disks = sh->disks, i; unsigned long flags; int uptodate = test_bit(BIO_UPTODATE, &bi->bi_flags); @@ -612,7 +740,7 @@ static sector_t raid5_compute_sector(sector_t r_sector, unsigned int raid_disks, static sector_t compute_blocknr(struct stripe_head *sh, int i) { raid5_conf_t *conf = sh->raid_conf; - int raid_disks = conf->raid_disks, data_disks = raid_disks - 1; + int raid_disks = sh->disks, data_disks = raid_disks - 1; sector_t new_sector = sh->sector, check; int sectors_per_chunk = conf->chunk_size >> 9; sector_t stripe; @@ -713,8 +841,7 @@ static void copy_data(int frombio, struct bio *bio, static void compute_block(struct stripe_head *sh, int dd_idx) { - raid5_conf_t *conf = sh->raid_conf; - int i, count, disks = conf->raid_disks; + int i, count, disks = sh->disks; void *ptr[MAX_XOR_BLOCKS], *p; PRINTK("compute_block, stripe %llu, idx %d\n", @@ -744,7 +871,7 @@ static void compute_block(struct stripe_head *sh, int dd_idx) static void compute_parity(struct stripe_head *sh, int method) { raid5_conf_t *conf = sh->raid_conf; - int i, pd_idx = sh->pd_idx, disks = conf->raid_disks, count; + int i, pd_idx = sh->pd_idx, disks = sh->disks, count; void *ptr[MAX_XOR_BLOCKS]; struct bio *chosen; @@ -910,6 +1037,20 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in return 0; } +static void end_reshape(raid5_conf_t *conf); + +static int stripe_to_pdidx(sector_t stripe, raid5_conf_t *conf, int disks) +{ + int sectors_per_chunk = conf->chunk_size >> 9; + sector_t x = stripe; + int pd_idx, dd_idx; + int chunk_offset = sector_div(x, sectors_per_chunk); + stripe = x; + raid5_compute_sector(stripe*(disks-1)*sectors_per_chunk + + chunk_offset, disks, disks-1, &dd_idx, &pd_idx, conf); + return pd_idx; +} + /* * handle_stripe - do things to a stripe. @@ -932,11 +1073,11 @@ static int add_stripe_bio(struct stripe_head *sh, struct bio *bi, int dd_idx, in static void handle_stripe(struct stripe_head *sh) { raid5_conf_t *conf = sh->raid_conf; - int disks = conf->raid_disks; + int disks = sh->disks; struct bio *return_bi= NULL; struct bio *bi; int i; - int syncing; + int syncing, expanding, expanded; int locked=0, uptodate=0, to_read=0, to_write=0, failed=0, written=0; int non_overwrite = 0; int failed_num=0; @@ -951,6 +1092,8 @@ static void handle_stripe(struct stripe_head *sh) clear_bit(STRIPE_DELAYED, &sh->state); syncing = test_bit(STRIPE_SYNCING, &sh->state); + expanding = test_bit(STRIPE_EXPAND_SOURCE, &sh->state); + expanded = test_bit(STRIPE_EXPAND_READY, &sh->state); /* Now to look around and see what can be done */ rcu_read_lock(); @@ -1143,13 +1286,14 @@ static void handle_stripe(struct stripe_head *sh) * parity, or to satisfy requests * or to load a block that is being partially written. */ - if (to_read || non_overwrite || (syncing && (uptodate < disks))) { + if (to_read || non_overwrite || (syncing && (uptodate < disks)) || expanding) { for (i=disks; i--;) { dev = &sh->dev[i]; if (!test_bit(R5_LOCKED, &dev->flags) && !test_bit(R5_UPTODATE, &dev->flags) && (dev->toread || (dev->towrite && !test_bit(R5_OVERWRITE, &dev->flags)) || syncing || + expanding || (failed && (sh->dev[failed_num].toread || (sh->dev[failed_num].towrite && !test_bit(R5_OVERWRITE, &sh->dev[failed_num].flags)))) ) @@ -1339,13 +1483,77 @@ static void handle_stripe(struct stripe_head *sh) set_bit(R5_Wantwrite, &dev->flags); set_bit(R5_ReWrite, &dev->flags); set_bit(R5_LOCKED, &dev->flags); + locked++; } else { /* let's read it back */ set_bit(R5_Wantread, &dev->flags); set_bit(R5_LOCKED, &dev->flags); + locked++; } } + if (expanded && test_bit(STRIPE_EXPANDING, &sh->state)) { + /* Need to write out all blocks after computing parity */ + sh->disks = conf->raid_disks; + sh->pd_idx = stripe_to_pdidx(sh->sector, conf, conf->raid_disks); + compute_parity(sh, RECONSTRUCT_WRITE); + for (i= conf->raid_disks; i--;) { + set_bit(R5_LOCKED, &sh->dev[i].flags); + locked++; + set_bit(R5_Wantwrite, &sh->dev[i].flags); + } + clear_bit(STRIPE_EXPANDING, &sh->state); + } else if (expanded) { + clear_bit(STRIPE_EXPAND_READY, &sh->state); + atomic_dec(&conf->reshape_stripes); + wake_up(&conf->wait_for_overlap); + md_done_sync(conf->mddev, STRIPE_SECTORS, 1); + } + + if (expanding && locked == 0) { + /* We have read all the blocks in this stripe and now we need to + * copy some of them into a target stripe for expand. + */ + clear_bit(STRIPE_EXPAND_SOURCE, &sh->state); + for (i=0; i< sh->disks; i++) + if (i != sh->pd_idx) { + int dd_idx, pd_idx, j; + struct stripe_head *sh2; + + sector_t bn = compute_blocknr(sh, i); + sector_t s = raid5_compute_sector(bn, conf->raid_disks, + conf->raid_disks-1, + &dd_idx, &pd_idx, conf); + sh2 = get_active_stripe(conf, s, conf->raid_disks, pd_idx, 1); + if (sh2 == NULL) + /* so far only the early blocks of this stripe + * have been requested. When later blocks + * get requested, we will try again + */ + continue; + if(!test_bit(STRIPE_EXPANDING, &sh2->state) || + test_bit(R5_Expanded, &sh2->dev[dd_idx].flags)) { + /* must have already done this block */ + release_stripe(sh2); + continue; + } + memcpy(page_address(sh2->dev[dd_idx].page), + page_address(sh->dev[i].page), + STRIPE_SIZE); + set_bit(R5_Expanded, &sh2->dev[dd_idx].flags); + set_bit(R5_UPTODATE, &sh2->dev[dd_idx].flags); + for (j=0; j<conf->raid_disks; j++) + if (j != sh2->pd_idx && + !test_bit(R5_Expanded, &sh2->dev[j].flags)) + break; + if (j == conf->raid_disks) { + set_bit(STRIPE_EXPAND_READY, &sh2->state); + set_bit(STRIPE_HANDLE, &sh2->state); + } + release_stripe(sh2); + } + } + spin_unlock(&sh->lock); while ((bi=return_bi)) { @@ -1384,7 +1592,7 @@ static void handle_stripe(struct stripe_head *sh) rcu_read_unlock(); if (rdev) { - if (syncing) + if (syncing || expanding || expanded) md_sync_acct(rdev->bdev, STRIPE_SECTORS); bi->bi_bdev = rdev->bdev; @@ -1526,17 +1734,16 @@ static inline void raid5_plug_device(raid5_conf_t *conf) spin_unlock_irq(&conf->device_lock); } -static int make_request (request_queue_t *q, struct bio * bi) +static int make_request(request_queue_t *q, struct bio * bi) { mddev_t *mddev = q->queuedata; raid5_conf_t *conf = mddev_to_conf(mddev); - const unsigned int raid_disks = conf->raid_disks; - const unsigned int data_disks = raid_disks - 1; unsigned int dd_idx, pd_idx; sector_t new_sector; sector_t logical_sector, last_sector; struct stripe_head *sh; const int rw = bio_data_dir(bi); + int remaining; if (unlikely(bio_barrier(bi))) { bio_endio(bi, bi->bi_size, -EOPNOTSUPP); @@ -1555,20 +1762,77 @@ static int make_request (request_queue_t *q, struct bio * bi) for (;logical_sector < last_sector; logical_sector += STRIPE_SECTORS) { DEFINE_WAIT(w); - - new_sector = raid5_compute_sector(logical_sector, - raid_disks, data_disks, &dd_idx, &pd_idx, conf); + int disks; + retry: + prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE); + if (likely(conf->expand_progress == MaxSector)) + disks = conf->raid_disks; + else { + /* spinlock is needed as expand_progress may be + * 64bit on a 32bit platform, and so it might be + * possible to see a half-updated value + * Ofcourse expand_progress could change after + * the lock is dropped, so once we get a reference + * to the stripe that we think it is, we will have + * to check again. + */ + spin_lock_irq(&conf->device_lock); + disks = conf->raid_disks; + if (logical_sector >= conf->expand_progress) + disks = conf->previous_raid_disks; + else { + if (logical_sector >= conf->expand_lo) { + spin_unlock_irq(&conf->device_lock); + schedule(); + goto retry; + } + } + spin_unlock_irq(&conf->device_lock); + } + new_sector = raid5_compute_sector(logical_sector, disks, disks - 1, + &dd_idx, &pd_idx, conf); PRINTK("raid5: make_request, sector %llu logical %llu\n", (unsigned long long)new_sector, (unsigned long long)logical_sector); - retry: - prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE); - sh = get_active_stripe(conf, new_sector, pd_idx, (bi->bi_rw&RWA_MASK)); + sh = get_active_stripe(conf, new_sector, disks, pd_idx, (bi->bi_rw&RWA_MASK)); if (sh) { - if (!add_stripe_bio(sh, bi, dd_idx, (bi->bi_rw&RW_MASK))) { - /* Add failed due to overlap. Flush everything + if (unlikely(conf->expand_progress != MaxSector)) { + /* expansion might have moved on while waiting for a + * stripe, so we must do the range check again. + * Expansion could still move past after this + * test, but as we are holding a reference to + * 'sh', we know that if that happens, + * STRIPE_EXPANDING will get set and the expansion + * won't proceed until we finish with the stripe. + */ + int must_retry = 0; + spin_lock_irq(&conf->device_lock); + if (logical_sector < conf->expand_progress && + disks == conf->previous_raid_disks) + /* mismatch, need to try again */ + must_retry = 1; + spin_unlock_irq(&conf->device_lock); + if (must_retry) { + release_stripe(sh); + goto retry; + } + } + /* FIXME what if we get a false positive because these + * are being updated. + */ + if (logical_sector >= mddev->suspend_lo && + logical_sector < mddev->suspend_hi) { + release_stripe(sh); + schedule(); + goto retry; + } + + if (test_bit(STRIPE_EXPANDING, &sh->state) || + !add_stripe_bio(sh, bi, dd_idx, (bi->bi_rw&RW_MASK))) { + /* Stripe is busy expanding or + * add failed due to overlap. Flush everything * and wait a while */ raid5_unplug_device(mddev->queue); @@ -1580,7 +1844,6 @@ static int make_request (request_queue_t *q, struct bio * bi) raid5_plug_device(conf); handle_stripe(sh); release_stripe(sh); - } else { /* cannot get stripe for read-ahead, just give-up */ clear_bit(BIO_UPTODATE, &bi->bi_flags); @@ -1590,7 +1853,9 @@ static int make_request (request_queue_t *q, struct bio * bi) } spin_lock_irq(&conf->device_lock); - if (--bi->bi_phys_segments == 0) { + remaining = --bi->bi_phys_segments; + spin_unlock_irq(&conf->device_lock); + if (remaining == 0) { int bytes = bi->bi_size; if ( bio_data_dir(bi) == WRITE ) @@ -1598,7 +1863,6 @@ static int make_request (request_queue_t *q, struct bio * bi) bi->bi_size = 0; bi->bi_end_io(bi, bytes, 0); } - spin_unlock_irq(&conf->device_lock); return 0; } @@ -1607,12 +1871,8 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i { raid5_conf_t *conf = (raid5_conf_t *) mddev->private; struct stripe_head *sh; - int sectors_per_chunk = conf->chunk_size >> 9; - sector_t x; - unsigned long stripe; - int chunk_offset; - int dd_idx, pd_idx; - sector_t first_sector; + int pd_idx; + sector_t first_sector, last_sector; int raid_disks = conf->raid_disks; int data_disks = raid_disks-1; sector_t max_sector = mddev->size << 1; @@ -1621,6 +1881,10 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i if (sector_nr >= max_sector) { /* just being told to finish up .. nothing much to do */ unplug_slaves(mddev); + if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) { + end_reshape(conf); + return 0; + } if (mddev->curr_resync < max_sector) /* aborted */ bitmap_end_sync(mddev->bitmap, mddev->curr_resync, @@ -1631,6 +1895,123 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i return 0; } + + if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) { + /* reshaping is quite different to recovery/resync so it is + * handled quite separately ... here. + * + * On each call to sync_request, we gather one chunk worth of + * destination stripes and flag them as expanding. + * Then we find all the source stripes and request reads. + * As the reads complete, handle_stripe will copy the data + * into the destination stripe and release that stripe. + */ + int i; + int dd_idx; + sector_t writepos, safepos, gap; + + if (sector_nr == 0 && + conf->expand_progress != 0) { + /* restarting in the middle, skip the initial sectors */ + sector_nr = conf->expand_progress; + sector_div(sector_nr, conf->raid_disks-1); + *skipped = 1; + return sector_nr; + } + + /* we update the metadata when there is more than 3Meg + * in the block range (that is rather arbitrary, should + * probably be time based) or when the data about to be + * copied would over-write the source of the data at + * the front of the range. + * i.e. one new_stripe forward from expand_progress new_maps + * to after where expand_lo old_maps to + */ + writepos = conf->expand_progress + + conf->chunk_size/512*(conf->raid_disks-1); + sector_div(writepos, conf->raid_disks-1); + safepos = conf->expand_lo; + sector_div(safepos, conf->previous_raid_disks-1); + gap = conf->expand_progress - conf->expand_lo; + + if (writepos >= safepos || + gap > (conf->raid_disks-1)*3000*2 /*3Meg*/) { + /* Cannot proceed until we've updated the superblock... */ + wait_event(conf->wait_for_overlap, + atomic_read(&conf->reshape_stripes)==0); + mddev->reshape_position = conf->expand_progress; + mddev->sb_dirty = 1; + md_wakeup_thread(mddev->thread); + wait_event(mddev->sb_wait, mddev->sb_dirty == 0 || + kthread_should_stop()); + spin_lock_irq(&conf->device_lock); + conf->expand_lo = mddev->reshape_position; + spin_unlock_irq(&conf->device_lock); + wake_up(&conf->wait_for_overlap); + } + + for (i=0; i < conf->chunk_size/512; i+= STRIPE_SECTORS) { + int j; + int skipped = 0; + pd_idx = stripe_to_pdidx(sector_nr+i, conf, conf->raid_disks); + sh = get_active_stripe(conf, sector_nr+i, + conf->raid_disks, pd_idx, 0); + set_bit(STRIPE_EXPANDING, &sh->state); + atomic_inc(&conf->reshape_stripes); + /* If any of this stripe is beyond the end of the old + * array, then we need to zero those blocks + */ + for (j=sh->disks; j--;) { + sector_t s; + if (j == sh->pd_idx) + continue; + s = compute_blocknr(sh, j); + if (s < (mddev->array_size<<1)) { + skipped = 1; + continue; + } + memset(page_address(sh->dev[j].page), 0, STRIPE_SIZE); + set_bit(R5_Expanded, &sh->dev[j].flags); + set_bit(R5_UPTODATE, &sh->dev[j].flags); + } + if (!skipped) { + set_bit(STRIPE_EXPAND_READY, &sh->state); + set_bit(STRIPE_HANDLE, &sh->state); + } + release_stripe(sh); + } + spin_lock_irq(&conf->device_lock); + conf->expand_progress = (sector_nr + i)*(conf->raid_disks-1); + spin_unlock_irq(&conf->device_lock); + /* Ok, those stripe are ready. We can start scheduling + * reads on the source stripes. + * The source stripes are determined by mapping the first and last + * block on the destination stripes. + */ + raid_disks = conf->previous_raid_disks; + data_disks = raid_disks - 1; + first_sector = + raid5_compute_sector(sector_nr*(conf->raid_disks-1), + raid_disks, data_disks, + &dd_idx, &pd_idx, conf); + last_sector = + raid5_compute_sector((sector_nr+conf->chunk_size/512) + *(conf->raid_disks-1) -1, + raid_disks, data_disks, + &dd_idx, &pd_idx, conf); + if (last_sector >= (mddev->size<<1)) + last_sector = (mddev->size<<1)-1; + while (first_sector <= last_sector) { + pd_idx = stripe_to_pdidx(first_sector, conf, conf->previous_raid_disks); + sh = get_active_stripe(conf, first_sector, + conf->previous_raid_disks, pd_idx, 0); + set_bit(STRIPE_EXPAND_SOURCE, &sh->state); + set_bit(STRIPE_HANDLE, &sh->state); + release_stripe(sh); + first_sector += STRIPE_SECTORS; + } + return conf->chunk_size>>9; + } /* if there is 1 or more failed drives and we are trying * to resync, then assert that we are finished, because there is * nothing we can do. @@ -1649,16 +2030,10 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i return sync_blocks * STRIPE_SECTORS; /* keep things rounded to whole stripes */ } - x = sector_nr; - chunk_offset = sector_div(x, sectors_per_chunk); - stripe = x; - BUG_ON(x != stripe); - - first_sector = raid5_compute_sector((sector_t)stripe*data_disks*sectors_per_chunk - + chunk_offset, raid_disks, data_disks, &dd_idx, &pd_idx, conf); - sh = get_active_stripe(conf, sector_nr, pd_idx, 1); + pd_idx = stripe_to_pdidx(sector_nr, conf, raid_disks); + sh = get_active_stripe(conf, sector_nr, raid_disks, pd_idx, 1); if (sh == NULL) { - sh = get_active_stripe(conf, sector_nr, pd_idx, 0); + sh = get_active_stripe(conf, sector_nr, raid_disks, pd_idx, 0); /* make sure we don't swamp the stripe cache if someone else * is trying to get access */ @@ -1822,11 +2197,64 @@ static int run(mddev_t *mddev) return -EIO; } - mddev->private = kzalloc(sizeof (raid5_conf_t) - + mddev->raid_disks * sizeof(struct disk_info), - GFP_KERNEL); + if (mddev->reshape_position != MaxSector) { + /* Check that we can continue the reshape. + * Currently only disks can change, it must + * increase, and we must be past the point where + * a stripe over-writes itself + */ + sector_t here_new, here_old; + int old_disks; + + if (mddev->new_level != mddev->level || + mddev->new_layout != mddev->layout || + mddev->new_chunk != mddev->chunk_size) { + printk(KERN_ERR "raid5: %s: unsupported reshape required - aborting.\n", + mdname(mddev)); + return -EINVAL; + } + if (mddev->delta_disks <= 0) { + printk(KERN_ERR "raid5: %s: unsupported reshape (reduce disks) required - aborting.\n", + mdname(mddev)); + return -EINVAL; + } + old_disks = mddev->raid_disks - mddev->delta_disks; + /* reshape_position must be on a new-stripe boundary, and one + * further up in new geometry must map after here in old geometry. + */ + here_new = mddev->reshape_position; + if (sector_div(here_new, (mddev->chunk_size>>9)*(mddev->raid_disks-1))) { + printk(KERN_ERR "raid5: reshape_position not on a stripe boundary\n"); + return -EINVAL; + } + /* here_new is the stripe we will write to */ + here_old = mddev->reshape_position; + sector_div(here_old, (mddev->chunk_size>>9)*(old_disks-1)); + /* here_old is the first stripe that we might need to read from */ + if (here_new >= here_old) { + /* Reading from the same stripe as writing to - bad */ + printk(KERN_ERR "raid5: reshape_position too early for auto-recovery - aborting.\n"); + return -EINVAL; + } + printk(KERN_INFO "raid5: reshape will continue\n"); + /* OK, we should be able to continue; */ + } + + + mddev->private = kzalloc(sizeof (raid5_conf_t), GFP_KERNEL); if ((conf = mddev->private) == NULL) goto abort; + if (mddev->reshape_position == MaxSector) { + conf->previous_raid_disks = conf->raid_disks = mddev->raid_disks; + } else { + conf->raid_disks = mddev->raid_disks; + conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks; + } + + conf->disks = kzalloc(conf->raid_disks * sizeof(struct disk_info), + GFP_KERNEL); + if (!conf->disks) + goto abort; conf->mddev = mddev; @@ -1847,7 +2275,7 @@ static int run(mddev_t *mddev) ITERATE_RDEV(mddev,rdev,tmp) { raid_disk = rdev->raid_disk; - if (raid_disk >= mddev->raid_disks + if (raid_disk >= conf->raid_disks || raid_disk < 0) continue; disk = conf->disks + raid_disk; @@ -1863,7 +2291,6 @@ static int run(mddev_t *mddev) } } - conf->raid_disks = mddev->raid_disks; /* * 0 for a fully functional array, 1 for a degraded array. */ @@ -1873,6 +2300,7 @@ static int run(mddev_t *mddev) conf->level = mddev->level; conf->algorithm = mddev->layout; conf->max_nr_stripes = NR_STRIPES; + conf->expand_progress = mddev->reshape_position; /* device size must be a multiple of chunk size */ mddev->size &= ~(mddev->chunk_size/1024 -1); @@ -1945,6 +2373,21 @@ static int run(mddev_t *mddev) print_raid5_conf(conf); + if (conf->expand_progress != MaxSector) { + printk("...ok start reshape thread\n"); + conf->expand_lo = conf->expand_progress; + atomic_set(&conf->reshape_stripes, 0); + clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); + clear_bit(MD_RECOVERY_CHECK, &mddev->recovery); + set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); + set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); + mddev->sync_thread = md_register_thread(md_do_sync, mddev, + "%s_reshape"); + /* FIXME if md_register_thread fails?? */ + md_wakeup_thread(mddev->sync_thread); + + } + /* read-ahead size must cover two whole stripes, which is * 2 * (n-1) * chunksize where 'n' is the number of raid devices */ @@ -1960,12 +2403,13 @@ static int run(mddev_t *mddev) mddev->queue->unplug_fn = raid5_unplug_device; mddev->queue->issue_flush_fn = raid5_issue_flush; + mddev->array_size = mddev->size * (conf->previous_raid_disks - 1); - mddev->array_size = mddev->size * (mddev->raid_disks - 1); return 0; abort: if (conf) { print_raid5_conf(conf); + kfree(conf->disks); kfree(conf->stripe_hashtbl); kfree(conf); } @@ -1986,6 +2430,7 @@ static int stop(mddev_t *mddev) kfree(conf->stripe_hashtbl); blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/ sysfs_remove_group(&mddev->kobj, &raid5_attrs_group); + kfree(conf->disks); kfree(conf); mddev->private = NULL; return 0; @@ -2001,7 +2446,7 @@ static void print_sh (struct stripe_head *sh) printk("sh %llu, count %d.\n", (unsigned long long)sh->sector, atomic_read(&sh->count)); printk("sh %llu, ", (unsigned long long)sh->sector); - for (i = 0; i < sh->raid_conf->raid_disks; i++) { + for (i = 0; i < sh->disks; i++) { printk("(cache%d: %p %ld) ", i, sh->dev[i].page, sh->dev[i].flags); } @@ -2132,7 +2577,7 @@ static int raid5_add_disk(mddev_t *mddev, mdk_rdev_t *rdev) /* * find the disk ... */ - for (disk=0; disk < mddev->raid_disks; disk++) + for (disk=0; disk < conf->raid_disks; disk++) if ((p=conf->disks + disk)->rdev == NULL) { clear_bit(In_sync, &rdev->flags); rdev->raid_disk = disk; @@ -2168,11 +2613,146 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors) return 0; } +#ifdef CONFIG_MD_RAID5_RESHAPE +static int raid5_check_reshape(mddev_t *mddev) +{ + raid5_conf_t *conf = mddev_to_conf(mddev); + int err; + + if (mddev->delta_disks < 0 || + mddev->new_level != mddev->level) + return -EINVAL; /* Cannot shrink array or change level yet */ + if (mddev->delta_disks == 0) + return 0; /* nothing to do */ + + /* Can only proceed if there are plenty of stripe_heads. + * We need a minimum of one full stripe,, and for sensible progress + * it is best to have about 4 times that. + * If we require 4 times, then the default 256 4K stripe_heads will + * allow for chunk sizes up to 256K, which is probably OK. + * If the chunk size is greater, user-space should request more + * stripe_heads first. + */ + if ((mddev->chunk_size / STRIPE_SIZE) * 4 > conf->max_nr_stripes || + (mddev->new_chunk / STRIPE_SIZE) * 4 > conf->max_nr_stripes) { + printk(KERN_WARNING "raid5: reshape: not enough stripes. Needed %lu\n", + (mddev->chunk_size / STRIPE_SIZE)*4); + return -ENOSPC; + } + + err = resize_stripes(conf, conf->raid_disks + mddev->delta_disks); + if (err) + return err; + + /* looks like we might be able to manage this */ + return 0; +} + +static int raid5_start_reshape(mddev_t *mddev) +{ + raid5_conf_t *conf = mddev_to_conf(mddev); + mdk_rdev_t *rdev; + struct list_head *rtmp; + int spares = 0; + int added_devices = 0; + + if (mddev->degraded || + test_bit(MD_RECOVERY_RUNNING, &mddev->recovery)) + return -EBUSY; + + ITERATE_RDEV(mddev, rdev, rtmp) + if (rdev->raid_disk < 0 && + !test_bit(Faulty, &rdev->flags)) + spares++; + + if (spares < mddev->delta_disks-1) + /* Not enough devices even to make a degraded array + * of that size + */ + return -EINVAL; + + atomic_set(&conf->reshape_stripes, 0); + spin_lock_irq(&conf->device_lock); + conf->previous_raid_disks = conf->raid_disks; + conf->raid_disks += mddev->delta_disks; + conf->expand_progress = 0; + conf->expand_lo = 0; + spin_unlock_irq(&conf->device_lock); + + /* Add some new drives, as many as will fit. + * We know there are enough to make the newly sized array work. + */ + ITERATE_RDEV(mddev, rdev, rtmp) + if (rdev->raid_disk < 0 && + !test_bit(Faulty, &rdev->flags)) { + if (raid5_add_disk(mddev, rdev)) { + char nm[20]; + set_bit(In_sync, &rdev->flags); + conf->working_disks++; + added_devices++; + sprintf(nm, "rd%d", rdev->raid_disk); + sysfs_create_link(&mddev->kobj, &rdev->kobj, nm); + } else + break; + } + + mddev->degraded = (conf->raid_disks - conf->previous_raid_disks) - added_devices; + mddev->raid_disks = conf->raid_disks; + mddev->reshape_position = 0; + mddev->sb_dirty = 1; + + clear_bit(MD_RECOVERY_SYNC, &mddev->recovery); + clear_bit(MD_RECOVERY_CHECK, &mddev->recovery); + set_bit(MD_RECOVERY_RESHAPE, &mddev->recovery); + set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); + mddev->sync_thread = md_register_thread(md_do_sync, mddev, + "%s_reshape"); + if (!mddev->sync_thread) { + mddev->recovery = 0; + spin_lock_irq(&conf->device_lock); + mddev->raid_disks = conf->raid_disks = conf->previous_raid_disks; + conf->expand_progress = MaxSector; + spin_unlock_irq(&conf->device_lock); + return -EAGAIN; + } + md_wakeup_thread(mddev->sync_thread); + md_new_event(mddev); + return 0; +} +#endif + +static void end_reshape(raid5_conf_t *conf) +{ + struct block_device *bdev; + + if (!test_bit(MD_RECOVERY_INTR, &conf->mddev->recovery)) { + conf->mddev->array_size = conf->mddev->size * (conf->raid_disks-1); + set_capacity(conf->mddev->gendisk, conf->mddev->array_size << 1); + conf->mddev->changed = 1; + + bdev = bdget_disk(conf->mddev->gendisk, 0); + if (bdev) { + mutex_lock(&bdev->bd_inode->i_mutex); + i_size_write(bdev->bd_inode, conf->mddev->array_size << 10); + mutex_unlock(&bdev->bd_inode->i_mutex); + bdput(bdev); + } + spin_lock_irq(&conf->device_lock); + conf->expand_progress = MaxSector; + spin_unlock_irq(&conf->device_lock); + conf->mddev->reshape_position = MaxSector; + } +} + static void raid5_quiesce(mddev_t *mddev, int state) { raid5_conf_t *conf = mddev_to_conf(mddev); switch(state) { + case 2: /* resume for a suspend */ + wake_up(&conf->wait_for_overlap); + break; + case 1: /* stop all writes */ spin_lock_irq(&conf->device_lock); conf->quiesce = 1; @@ -2186,6 +2766,7 @@ static void raid5_quiesce(mddev_t *mddev, int state) spin_lock_irq(&conf->device_lock); conf->quiesce = 0; wake_up(&conf->wait_for_stripe); + wake_up(&conf->wait_for_overlap); spin_unlock_irq(&conf->device_lock); break; } @@ -2206,6 +2787,10 @@ static struct mdk_personality raid5_personality = .spare_active = raid5_spare_active, .sync_request = sync_request, .resize = raid5_resize, +#ifdef CONFIG_MD_RAID5_RESHAPE + .check_reshape = raid5_check_reshape, + .start_reshape = raid5_start_reshape, +#endif .quiesce = raid5_quiesce, }; diff --git a/drivers/md/raid6main.c b/drivers/md/raid6main.c index cd477ebf2ee..6df4930fdde 100644 --- a/drivers/md/raid6main.c +++ b/drivers/md/raid6main.c @@ -331,9 +331,9 @@ static int grow_stripes(raid6_conf_t *conf, int num) kmem_cache_t *sc; int devs = conf->raid_disks; - sprintf(conf->cache_name, "raid6/%s", mdname(conf->mddev)); + sprintf(conf->cache_name[0], "raid6/%s", mdname(conf->mddev)); - sc = kmem_cache_create(conf->cache_name, + sc = kmem_cache_create(conf->cache_name[0], sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev), 0, 0, NULL, NULL); if (!sc) @@ -2006,11 +2006,14 @@ static int run(mddev_t *mddev) return -EIO; } - mddev->private = kzalloc(sizeof (raid6_conf_t) - + mddev->raid_disks * sizeof(struct disk_info), - GFP_KERNEL); + mddev->private = kzalloc(sizeof (raid6_conf_t), GFP_KERNEL); if ((conf = mddev->private) == NULL) goto abort; + conf->disks = kzalloc(mddev->raid_disks * sizeof(struct disk_info), + GFP_KERNEL); + if (!conf->disks) + goto abort; + conf->mddev = mddev; if ((conf->stripe_hashtbl = kzalloc(PAGE_SIZE, GFP_KERNEL)) == NULL) @@ -2158,6 +2161,7 @@ abort: print_raid6_conf(conf); safe_put_page(conf->spare_page); kfree(conf->stripe_hashtbl); + kfree(conf->disks); kfree(conf); } mddev->private = NULL; diff --git a/drivers/media/dvb/dvb-core/dvbdev.c b/drivers/media/dvb/dvb-core/dvbdev.c index 54f8b95717b..96fe0ecae25 100644 --- a/drivers/media/dvb/dvb-core/dvbdev.c +++ b/drivers/media/dvb/dvb-core/dvbdev.c @@ -86,7 +86,7 @@ static int dvb_device_open(struct inode *inode, struct file *file) if (dvbdev && dvbdev->fops) { int err = 0; - struct file_operations *old_fops; + const struct file_operations *old_fops; file->private_data = dvbdev; old_fops = file->f_op; diff --git a/drivers/media/video/videodev.c b/drivers/media/video/videodev.c index 75e3d41382f..5f87dd5f1d0 100644 --- a/drivers/media/video/videodev.c +++ b/drivers/media/video/videodev.c @@ -97,7 +97,7 @@ static int video_open(struct inode *inode, struct file *file) unsigned int minor = iminor(inode); int err = 0; struct video_device *vfl; - struct file_operations *old_fops; + const struct file_operations *old_fops; if(minor>=VIDEO_NUM_DEVICES) return -ENODEV; diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c index b09fb630715..7d4c5497785 100644 --- a/drivers/message/i2o/i2o_block.c +++ b/drivers/message/i2o/i2o_block.c @@ -1179,10 +1179,9 @@ static int __init i2o_block_init(void) goto exit; } - i2o_blk_req_pool.pool = mempool_create(I2O_BLOCK_REQ_MEMPOOL_SIZE, - mempool_alloc_slab, - mempool_free_slab, - i2o_blk_req_pool.slab); + i2o_blk_req_pool.pool = + mempool_create_slab_pool(I2O_BLOCK_REQ_MEMPOOL_SIZE, + i2o_blk_req_pool.slab); if (!i2o_blk_req_pool.pool) { osm_err("can't init request mempool\n"); rc = -ENOMEM; diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c index 2a0c42b8cda..3d2e76eea93 100644 --- a/drivers/message/i2o/i2o_proc.c +++ b/drivers/message/i2o/i2o_proc.c @@ -56,7 +56,7 @@ typedef struct _i2o_proc_entry_t { char *name; /* entry name */ mode_t mode; /* mode */ - struct file_operations *fops; /* open function */ + const struct file_operations *fops; /* open function */ } i2o_proc_entry; /* global I2O /proc/i2o entry */ diff --git a/drivers/misc/ibmasm/heartbeat.c b/drivers/misc/ibmasm/heartbeat.c index f295401fac2..7fd7a43e38d 100644 --- a/drivers/misc/ibmasm/heartbeat.c +++ b/drivers/misc/ibmasm/heartbeat.c @@ -52,12 +52,13 @@ static struct notifier_block panic_notifier = { panic_happened, NULL, 1 }; void ibmasm_register_panic_notifier(void) { - notifier_chain_register(&panic_notifier_list, &panic_notifier); + atomic_notifier_chain_register(&panic_notifier_list, &panic_notifier); } void ibmasm_unregister_panic_notifier(void) { - notifier_chain_unregister(&panic_notifier_list, &panic_notifier); + atomic_notifier_chain_unregister(&panic_notifier_list, + &panic_notifier); } diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c index 5c550fcac2c..26a230b6ff8 100644 --- a/drivers/misc/ibmasm/ibmasmfs.c +++ b/drivers/misc/ibmasm/ibmasmfs.c @@ -101,7 +101,7 @@ static struct super_operations ibmasmfs_s_ops = { .drop_inode = generic_delete_inode, }; -static struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations; +static const struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations; static struct file_system_type ibmasmfs_type = { .owner = THIS_MODULE, diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index 205bb708333..0f6bb2e625d 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -25,9 +25,8 @@ config MTD_JEDECPROBE compatible with the Common Flash Interface, but will use the common CFI-targetted flash drivers for any chips which are identified which are in fact compatible in all but the probe method. This actually - covers most AMD/Fujitsu-compatible chips, and will shortly cover also - non-CFI Intel chips (that code is in MTD CVS and should shortly be sent - for inclusion in Linus' tree) + covers most AMD/Fujitsu-compatible chips and also non-CFI + Intel chips. config MTD_GEN_PROBE tristate diff --git a/drivers/mtd/maps/dilnetpc.c b/drivers/mtd/maps/dilnetpc.c index b51c757817d..efb22169264 100644 --- a/drivers/mtd/maps/dilnetpc.c +++ b/drivers/mtd/maps/dilnetpc.c @@ -218,8 +218,8 @@ static void dnp_set_vpp(struct map_info *not_used, int on) { if(--vpp_counter == 0) setcsc(CSC_RBWR, getcsc(CSC_RBWR) | 0x4); - else if(vpp_counter < 0) - BUG(); + else + BUG_ON(vpp_counter < 0); } spin_unlock_irq(&dnpc_spin); } @@ -240,8 +240,8 @@ static void adnp_set_vpp(struct map_info *not_used, int on) { if(--vpp_counter == 0) setcsc(CSC_RBWR, getcsc(CSC_RBWR) | 0x8); - else if(vpp_counter < 0) - BUG(); + else + BUG_ON(vpp_counter < 0); } spin_unlock_irq(&dnpc_spin); } diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 7f3ff500b68..840dd66ce2d 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -450,8 +450,7 @@ int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr) kfree(tr->blkcore_priv); - if (!list_empty(&tr->devs)) - BUG(); + BUG_ON(!list_empty(&tr->devs)); return 0; } diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index b1bf8c411de..9af840364a7 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -477,8 +477,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) } /* must never happen since size limit has been verified above */ - if (i >= concat->num_subdev) - BUG(); + BUG_ON(i >= concat->num_subdev); /* now do the erase: */ err = 0; @@ -500,8 +499,7 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr) if ((err = concat_dev_erase(subdev, erase))) { /* sanity check: should never happen since * block alignment has been checked above */ - if (err == -EINVAL) - BUG(); + BUG_ON(err == -EINVAL); if (erase->fail_addr != 0xffffffff) instr->fail_addr = erase->fail_addr + offset; break; diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c index d339308539f..70f63891b19 100644 --- a/drivers/net/3c59x.c +++ b/drivers/net/3c59x.c @@ -196,8 +196,6 @@ #define DRV_NAME "3c59x" -#define DRV_VERSION "LK1.1.19" -#define DRV_RELDATE "10 Nov 2002" @@ -275,10 +273,8 @@ static char version[] __devinitdata = DRV_NAME ": Donald Becker and others. www.scyld.com/network/vortex.html\n"; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); -MODULE_DESCRIPTION("3Com 3c59x/3c9xx ethernet driver " - DRV_VERSION " " DRV_RELDATE); +MODULE_DESCRIPTION("3Com 3c59x/3c9xx ethernet driver "); MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION); /* Operational parameter that usually are not changed. */ @@ -904,7 +900,6 @@ static void acpi_set_WOL(struct net_device *dev); static struct ethtool_ops vortex_ethtool_ops; static void set_8021q_mode(struct net_device *dev, int enable); - /* This driver uses 'options' to pass the media type, full-duplex flag, etc. */ /* Option count limit only -- unlimited interfaces are supported. */ #define MAX_UNITS 8 @@ -919,8 +914,6 @@ static int global_full_duplex = -1; static int global_enable_wol = -1; static int global_use_mmio = -1; -/* #define dev_alloc_skb dev_alloc_skb_debug */ - /* Variables to work-around the Compaq PCI BIOS32 problem. */ static int compaq_ioaddr, compaq_irq, compaq_device_id = 0x5900; static struct net_device *compaq_net_device; @@ -976,7 +969,7 @@ static void poll_vortex(struct net_device *dev) #ifdef CONFIG_PM -static int vortex_suspend (struct pci_dev *pdev, pm_message_t state) +static int vortex_suspend(struct pci_dev *pdev, pm_message_t state) { struct net_device *dev = pci_get_drvdata(pdev); @@ -994,7 +987,7 @@ static int vortex_suspend (struct pci_dev *pdev, pm_message_t state) return 0; } -static int vortex_resume (struct pci_dev *pdev) +static int vortex_resume(struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); struct vortex_private *vp = netdev_priv(dev); @@ -1027,8 +1020,8 @@ static struct eisa_device_id vortex_eisa_ids[] = { { "" } }; -static int vortex_eisa_probe (struct device *device); -static int vortex_eisa_remove (struct device *device); +static int vortex_eisa_probe(struct device *device); +static int vortex_eisa_remove(struct device *device); static struct eisa_driver vortex_eisa_driver = { .id_table = vortex_eisa_ids, @@ -1039,12 +1032,12 @@ static struct eisa_driver vortex_eisa_driver = { } }; -static int vortex_eisa_probe (struct device *device) +static int vortex_eisa_probe(struct device *device) { void __iomem *ioaddr; struct eisa_device *edev; - edev = to_eisa_device (device); + edev = to_eisa_device(device); if (!request_region(edev->base_addr, VORTEX_TOTAL_SIZE, DRV_NAME)) return -EBUSY; @@ -1053,7 +1046,7 @@ static int vortex_eisa_probe (struct device *device) if (vortex_probe1(device, ioaddr, ioread16(ioaddr + 0xC88) >> 12, edev->id.driver_data, vortex_cards_found)) { - release_region (edev->base_addr, VORTEX_TOTAL_SIZE); + release_region(edev->base_addr, VORTEX_TOTAL_SIZE); return -ENODEV; } @@ -1062,15 +1055,15 @@ static int vortex_eisa_probe (struct device *device) return 0; } -static int vortex_eisa_remove (struct device *device) +static int vortex_eisa_remove(struct device *device) { struct eisa_device *edev; struct net_device *dev; struct vortex_private *vp; void __iomem *ioaddr; - edev = to_eisa_device (device); - dev = eisa_get_drvdata (edev); + edev = to_eisa_device(device); + dev = eisa_get_drvdata(edev); if (!dev) { printk("vortex_eisa_remove called for Compaq device!\n"); @@ -1080,17 +1073,17 @@ static int vortex_eisa_remove (struct device *device) vp = netdev_priv(dev); ioaddr = vp->ioaddr; - unregister_netdev (dev); - iowrite16 (TotalReset|0x14, ioaddr + EL3_CMD); - release_region (dev->base_addr, VORTEX_TOTAL_SIZE); + unregister_netdev(dev); + iowrite16(TotalReset|0x14, ioaddr + EL3_CMD); + release_region(dev->base_addr, VORTEX_TOTAL_SIZE); - free_netdev (dev); + free_netdev(dev); return 0; } #endif /* returns count found (>= 0), or negative on error */ -static int __init vortex_eisa_init (void) +static int __init vortex_eisa_init(void) { int eisa_found = 0; int orig_cards_found = vortex_cards_found; @@ -1121,7 +1114,7 @@ static int __init vortex_eisa_init (void) } /* returns count (>= 0), or negative on error */ -static int __devinit vortex_init_one (struct pci_dev *pdev, +static int __devinit vortex_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { int rc, unit, pci_bar; @@ -1129,7 +1122,7 @@ static int __devinit vortex_init_one (struct pci_dev *pdev, void __iomem *ioaddr; /* wake up and enable device */ - rc = pci_enable_device (pdev); + rc = pci_enable_device(pdev); if (rc < 0) goto out; @@ -1151,7 +1144,7 @@ static int __devinit vortex_init_one (struct pci_dev *pdev, rc = vortex_probe1(&pdev->dev, ioaddr, pdev->irq, ent->driver_data, unit); if (rc < 0) { - pci_disable_device (pdev); + pci_disable_device(pdev); goto out; } @@ -1236,7 +1229,7 @@ static int __devinit vortex_probe1(struct device *gendev, if (print_info) printk (KERN_INFO "See Documentation/networking/vortex.txt\n"); - printk(KERN_INFO "%s: 3Com %s %s at %p. Vers " DRV_VERSION "\n", + printk(KERN_INFO "%s: 3Com %s %s at %p.\n", print_name, pdev ? "PCI" : "EISA", vci->name, @@ -1266,7 +1259,7 @@ static int __devinit vortex_probe1(struct device *gendev, /* enable bus-mastering if necessary */ if (vci->flags & PCI_USES_MASTER) - pci_set_master (pdev); + pci_set_master(pdev); if (vci->drv_flags & IS_VORTEX) { u8 pci_latency; @@ -1310,7 +1303,7 @@ static int __devinit vortex_probe1(struct device *gendev, if (pdev) pci_set_drvdata(pdev, dev); if (edev) - eisa_set_drvdata (edev, dev); + eisa_set_drvdata(edev, dev); vp->media_override = 7; if (option >= 0) { @@ -1335,7 +1328,7 @@ static int __devinit vortex_probe1(struct device *gendev, vp->enable_wol = 1; } - vp->force_fd = vp->full_duplex; + vp->mii.force_media = vp->full_duplex; vp->options = option; /* Read the station address from the EEPROM. */ EL3WINDOW(0); @@ -1625,6 +1618,46 @@ issue_and_wait(struct net_device *dev, int cmd) } static void +vortex_set_duplex(struct net_device *dev) +{ + struct vortex_private *vp = netdev_priv(dev); + void __iomem *ioaddr = vp->ioaddr; + + printk(KERN_INFO "%s: setting %s-duplex.\n", + dev->name, (vp->full_duplex) ? "full" : "half"); + + EL3WINDOW(3); + /* Set the full-duplex bit. */ + iowrite16(((vp->info1 & 0x8000) || vp->full_duplex ? 0x20 : 0) | + (vp->large_frames ? 0x40 : 0) | + ((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? + 0x100 : 0), + ioaddr + Wn3_MAC_Ctrl); + + issue_and_wait(dev, TxReset); + /* + * Don't reset the PHY - that upsets autonegotiation during DHCP operations. + */ + issue_and_wait(dev, RxReset|0x04); +} + +static void vortex_check_media(struct net_device *dev, unsigned int init) +{ + struct vortex_private *vp = netdev_priv(dev); + unsigned int ok_to_print = 0; + + if (vortex_debug > 3) + ok_to_print = 1; + + if (mii_check_media(&vp->mii, ok_to_print, init)) { + vp->full_duplex = vp->mii.full_duplex; + vortex_set_duplex(dev); + } else if (init) { + vortex_set_duplex(dev); + } +} + +static void vortex_up(struct net_device *dev) { struct vortex_private *vp = netdev_priv(dev); @@ -1684,53 +1717,20 @@ vortex_up(struct net_device *dev) printk(KERN_DEBUG "%s: Initial media type %s.\n", dev->name, media_tbl[dev->if_port].name); - vp->full_duplex = vp->force_fd; + vp->full_duplex = vp->mii.force_media; config = BFINS(config, dev->if_port, 20, 4); if (vortex_debug > 6) printk(KERN_DEBUG "vortex_up(): writing 0x%x to InternalConfig\n", config); iowrite32(config, ioaddr + Wn3_Config); + netif_carrier_off(dev); if (dev->if_port == XCVR_MII || dev->if_port == XCVR_NWAY) { - int mii_reg1, mii_reg5; EL3WINDOW(4); - /* Read BMSR (reg1) only to clear old status. */ - mii_reg1 = mdio_read(dev, vp->phys[0], MII_BMSR); - mii_reg5 = mdio_read(dev, vp->phys[0], MII_LPA); - if (mii_reg5 == 0xffff || mii_reg5 == 0x0000) { - netif_carrier_off(dev); /* No MII device or no link partner report */ - } else { - mii_reg5 &= vp->advertising; - if ((mii_reg5 & 0x0100) != 0 /* 100baseTx-FD */ - || (mii_reg5 & 0x00C0) == 0x0040) /* 10T-FD, but not 100-HD */ - vp->full_duplex = 1; - netif_carrier_on(dev); - } - vp->partner_flow_ctrl = ((mii_reg5 & 0x0400) != 0); - if (vortex_debug > 1) - printk(KERN_INFO "%s: MII #%d status %4.4x, link partner capability %4.4x," - " info1 %04x, setting %s-duplex.\n", - dev->name, vp->phys[0], - mii_reg1, mii_reg5, - vp->info1, ((vp->info1 & 0x8000) || vp->full_duplex) ? "full" : "half"); - EL3WINDOW(3); - } - - /* Set the full-duplex bit. */ - iowrite16( ((vp->info1 & 0x8000) || vp->full_duplex ? 0x20 : 0) | - (vp->large_frames ? 0x40 : 0) | - ((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? 0x100 : 0), - ioaddr + Wn3_MAC_Ctrl); - - if (vortex_debug > 1) { - printk(KERN_DEBUG "%s: vortex_up() InternalConfig %8.8x.\n", - dev->name, config); + vortex_check_media(dev, 1); } + else + vortex_set_duplex(dev); - issue_and_wait(dev, TxReset); - /* - * Don't reset the PHY - that upsets autonegotiation during DHCP operations. - */ - issue_and_wait(dev, RxReset|0x04); iowrite16(SetStatusEnb | 0x00, ioaddr + EL3_CMD); @@ -1805,7 +1805,6 @@ vortex_up(struct net_device *dev) set_8021q_mode(dev, 1); iowrite16(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ -// issue_and_wait(dev, SetTxStart|0x07ff); iowrite16(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ iowrite16(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ /* Allow status bits to be seen. */ @@ -1892,7 +1891,7 @@ vortex_timer(unsigned long data) void __iomem *ioaddr = vp->ioaddr; int next_tick = 60*HZ; int ok = 0; - int media_status, mii_status, old_window; + int media_status, old_window; if (vortex_debug > 2) { printk(KERN_DEBUG "%s: Media selection timer tick happened, %s.\n", @@ -1900,8 +1899,6 @@ vortex_timer(unsigned long data) printk(KERN_DEBUG "dev->watchdog_timeo=%d\n", dev->watchdog_timeo); } - if (vp->medialock) - goto leave_media_alone; disable_irq(dev->irq); old_window = ioread16(ioaddr + EL3_CMD) >> 13; EL3WINDOW(4); @@ -1924,44 +1921,9 @@ vortex_timer(unsigned long data) break; case XCVR_MII: case XCVR_NWAY: { - spin_lock_bh(&vp->lock); - mii_status = mdio_read(dev, vp->phys[0], MII_BMSR); - if (!(mii_status & BMSR_LSTATUS)) { - /* Re-read to get actual link status */ - mii_status = mdio_read(dev, vp->phys[0], MII_BMSR); - } ok = 1; - if (vortex_debug > 2) - printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n", - dev->name, mii_status); - if (mii_status & BMSR_LSTATUS) { - int mii_reg5 = mdio_read(dev, vp->phys[0], MII_LPA); - if (! vp->force_fd && mii_reg5 != 0xffff) { - int duplex; - - mii_reg5 &= vp->advertising; - duplex = (mii_reg5&0x0100) || (mii_reg5 & 0x01C0) == 0x0040; - if (vp->full_duplex != duplex) { - vp->full_duplex = duplex; - printk(KERN_INFO "%s: Setting %s-duplex based on MII " - "#%d link partner capability of %4.4x.\n", - dev->name, vp->full_duplex ? "full" : "half", - vp->phys[0], mii_reg5); - /* Set the full-duplex bit. */ - EL3WINDOW(3); - iowrite16( (vp->full_duplex ? 0x20 : 0) | - (vp->large_frames ? 0x40 : 0) | - ((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? 0x100 : 0), - ioaddr + Wn3_MAC_Ctrl); - if (vortex_debug > 1) - printk(KERN_DEBUG "Setting duplex in Wn3_MAC_Ctrl\n"); - /* AKPM: bug: should reset Tx and Rx after setting Duplex. Page 180 */ - } - } - netif_carrier_on(dev); - } else { - netif_carrier_off(dev); - } + spin_lock_bh(&vp->lock); + vortex_check_media(dev, 0); spin_unlock_bh(&vp->lock); } break; @@ -1971,7 +1933,14 @@ vortex_timer(unsigned long data) dev->name, media_tbl[dev->if_port].name, media_status); ok = 1; } - if ( ! ok) { + + if (!netif_carrier_ok(dev)) + next_tick = 5*HZ; + + if (vp->medialock) + goto leave_media_alone; + + if (!ok) { unsigned int config; do { @@ -2004,14 +1973,14 @@ vortex_timer(unsigned long data) printk(KERN_DEBUG "wrote 0x%08x to Wn3_Config\n", config); /* AKPM: FIXME: Should reset Rx & Tx here. P60 of 3c90xc.pdf */ } - EL3WINDOW(old_window); - enable_irq(dev->irq); leave_media_alone: if (vortex_debug > 2) printk(KERN_DEBUG "%s: Media selection timer finished, %s.\n", dev->name, media_tbl[dev->if_port].name); + EL3WINDOW(old_window); + enable_irq(dev->irq); mod_timer(&vp->timer, RUN_AT(next_tick)); if (vp->deferred) iowrite16(FakeIntr, ioaddr + EL3_CMD); @@ -2206,7 +2175,7 @@ vortex_start_xmit(struct sk_buff *skb, struct net_device *dev) if (vp->bus_master) { /* Set the bus-master controller to transfer the packet. */ int len = (skb->len + 3) & ~3; - iowrite32( vp->tx_skb_dma = pci_map_single(VORTEX_PCI(vp), skb->data, len, PCI_DMA_TODEVICE), + iowrite32(vp->tx_skb_dma = pci_map_single(VORTEX_PCI(vp), skb->data, len, PCI_DMA_TODEVICE), ioaddr + Wn7_MasterAddr); iowrite16(len, ioaddr + Wn7_MasterLen); vp->tx_skb = skb; @@ -2983,20 +2952,6 @@ static int vortex_nway_reset(struct net_device *dev) return rc; } -static u32 vortex_get_link(struct net_device *dev) -{ - struct vortex_private *vp = netdev_priv(dev); - void __iomem *ioaddr = vp->ioaddr; - unsigned long flags; - int rc; - - spin_lock_irqsave(&vp->lock, flags); - EL3WINDOW(4); - rc = mii_link_ok(&vp->mii); - spin_unlock_irqrestore(&vp->lock, flags); - return rc; -} - static int vortex_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct vortex_private *vp = netdev_priv(dev); @@ -3077,7 +3032,6 @@ static void vortex_get_drvinfo(struct net_device *dev, struct vortex_private *vp = netdev_priv(dev); strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); if (VORTEX_PCI(vp)) { strcpy(info->bus_info, pci_name(VORTEX_PCI(vp))); } else { @@ -3098,9 +3052,9 @@ static struct ethtool_ops vortex_ethtool_ops = { .get_stats_count = vortex_get_stats_count, .get_settings = vortex_get_settings, .set_settings = vortex_set_settings, - .get_link = vortex_get_link, + .get_link = ethtool_op_get_link, .nway_reset = vortex_nway_reset, - .get_perm_addr = ethtool_op_get_perm_addr, + .get_perm_addr = ethtool_op_get_perm_addr, }; #ifdef CONFIG_PCI @@ -3301,7 +3255,7 @@ static void mdio_write(struct net_device *dev, int phy_id, int location, int val } return; } - + /* ACPI: Advanced Configuration and Power Interface. */ /* Set Wake-On-LAN mode and put the board into D3 (power-down) state. */ static void acpi_set_WOL(struct net_device *dev) @@ -3325,7 +3279,7 @@ static void acpi_set_WOL(struct net_device *dev) } -static void __devexit vortex_remove_one (struct pci_dev *pdev) +static void __devexit vortex_remove_one(struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); struct vortex_private *vp; @@ -3381,7 +3335,7 @@ static int vortex_have_pci; static int vortex_have_eisa; -static int __init vortex_init (void) +static int __init vortex_init(void) { int pci_rc, eisa_rc; @@ -3397,14 +3351,14 @@ static int __init vortex_init (void) } -static void __exit vortex_eisa_cleanup (void) +static void __exit vortex_eisa_cleanup(void) { struct vortex_private *vp; void __iomem *ioaddr; #ifdef CONFIG_EISA /* Take care of the EISA devices */ - eisa_driver_unregister (&vortex_eisa_driver); + eisa_driver_unregister(&vortex_eisa_driver); #endif if (compaq_net_device) { @@ -3412,33 +3366,24 @@ static void __exit vortex_eisa_cleanup (void) ioaddr = ioport_map(compaq_net_device->base_addr, VORTEX_TOTAL_SIZE); - unregister_netdev (compaq_net_device); - iowrite16 (TotalReset, ioaddr + EL3_CMD); + unregister_netdev(compaq_net_device); + iowrite16(TotalReset, ioaddr + EL3_CMD); release_region(compaq_net_device->base_addr, VORTEX_TOTAL_SIZE); - free_netdev (compaq_net_device); + free_netdev(compaq_net_device); } } -static void __exit vortex_cleanup (void) +static void __exit vortex_cleanup(void) { if (vortex_have_pci) - pci_unregister_driver (&vortex_driver); + pci_unregister_driver(&vortex_driver); if (vortex_have_eisa) - vortex_eisa_cleanup (); + vortex_eisa_cleanup(); } module_init(vortex_init); module_exit(vortex_cleanup); - - -/* - * Local variables: - * c-indent-level: 4 - * c-basic-offset: 4 - * tab-width: 4 - * End: - */ diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 2d0ac169a86..f13a539dc16 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -3159,7 +3159,7 @@ static int bond_slave_netdev_event(unsigned long event, struct net_device *slave * bond_netdev_event: handle netdev notifier chain events. * * This function receives events for the netdev chain. The caller (an - * ioctl handler calling notifier_call_chain) holds the necessary + * ioctl handler calling blocking_notifier_call_chain) holds the necessary * locks for us to safely manipulate the slave devices (RTNL lock, * dev_probe_lock). */ diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index e7fc28b07e5..7627a75f4f7 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -134,6 +134,7 @@ #include <linux/random.h> #include <linux/init.h> #include <linux/if_vlan.h> +#include <linux/dma-mapping.h> #include <asm/irq.h> #include <asm/io.h> @@ -2932,7 +2933,7 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i if (id->driver_data & DEV_HAS_HIGH_DMA) { /* packet format 3: supports 40-bit addressing */ np->desc_ver = DESC_VER_3; - if (pci_set_dma_mask(pci_dev, 0x0000007fffffffffULL)) { + if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) { printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n", pci_name(pci_dev)); } else { diff --git a/drivers/net/ioc3-eth.c b/drivers/net/ioc3-eth.c index 9b8295ee06e..ae71ed57c12 100644 --- a/drivers/net/ioc3-eth.c +++ b/drivers/net/ioc3-eth.c @@ -44,6 +44,7 @@ #include <linux/ip.h> #include <linux/tcp.h> #include <linux/udp.h> +#include <linux/dma-mapping.h> #ifdef CONFIG_SERIAL_8250 #include <linux/serial_core.h> @@ -1195,17 +1196,17 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) int err, pci_using_dac; /* Configure DMA attributes. */ - err = pci_set_dma_mask(pdev, 0xffffffffffffffffULL); + err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); if (!err) { pci_using_dac = 1; - err = pci_set_consistent_dma_mask(pdev, 0xffffffffffffffffULL); + err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); if (err < 0) { printk(KERN_ERR "%s: Unable to obtain 64 bit DMA " "for consistent allocations\n", pci_name(pdev)); goto out; } } else { - err = pci_set_dma_mask(pdev, 0xffffffffULL); + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (err) { printk(KERN_ERR "%s: No usable DMA configuration, " "aborting.\n", pci_name(pdev)); diff --git a/drivers/net/irda/nsc-ircc.c b/drivers/net/irda/nsc-ircc.c index 83141a3ff54..cc7ff8f00e4 100644 --- a/drivers/net/irda/nsc-ircc.c +++ b/drivers/net/irda/nsc-ircc.c @@ -207,7 +207,7 @@ static int __init nsc_ircc_init(void) /* Register with PnP subsystem to detect disable ports */ ret = pnp_register_driver(&nsc_ircc_pnp_driver); - if (ret >= 0) + if (!ret) pnp_registered = 1; ret = -ENODEV; @@ -812,7 +812,7 @@ static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info) int cfg_base = info->cfg_base; int enabled; - /* User is shure about his config... accept it. */ + /* User is sure about his config... accept it. */ IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): " "io=0x%04x, irq=%d, dma=%d\n", __FUNCTION__, info->fir_base, info->irq, info->dma); diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index 0c13795dca3..b79d6e8d304 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -172,7 +172,7 @@ static struct net_device_stats *get_stats(struct net_device *dev) memset(stats, 0, sizeof(struct net_device_stats)); - for_each_cpu(i) { + for_each_possible_cpu(i) { struct net_device_stats *lb_stats; lb_stats = &per_cpu(loopback_stats, i); diff --git a/drivers/net/ns83820.c b/drivers/net/ns83820.c index 0fede50abd3..8e9b1a537de 100644 --- a/drivers/net/ns83820.c +++ b/drivers/net/ns83820.c @@ -1828,10 +1828,10 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_ int using_dac = 0; /* See if we can set the dma mask early on; failure is fatal. */ - if (sizeof(dma_addr_t) == 8 && - !pci_set_dma_mask(pci_dev, 0xffffffffffffffffULL)) { + if (sizeof(dma_addr_t) == 8 && + !pci_set_dma_mask(pci_dev, DMA_64BIT_MASK)) { using_dac = 1; - } else if (!pci_set_dma_mask(pci_dev, 0xffffffff)) { + } else if (!pci_set_dma_mask(pci_dev, DMA_32BIT_MASK)) { using_dac = 0; } else { printk(KERN_WARNING "ns83820.c: pci_set_dma_mask failed!\n"); diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c index 253440a9802..b82191d2bee 100644 --- a/drivers/net/sis900.c +++ b/drivers/net/sis900.c @@ -1693,7 +1693,7 @@ static irqreturn_t sis900_interrupt(int irq, void *dev_instance, struct pt_regs * * Process receive interrupt events, * put buffer to higher layer and refill buffer pool - * Note: This fucntion is called by interrupt handler, + * Note: This function is called by interrupt handler, * don't do "too much" work here */ @@ -1840,7 +1840,7 @@ static int sis900_rx(struct net_device *net_dev) * * Check for error condition and free socket buffer etc * schedule for more transmission as needed - * Note: This fucntion is called by interrupt handler, + * Note: This function is called by interrupt handler, * don't do "too much" work here */ @@ -2283,7 +2283,7 @@ static void set_rx_mode(struct net_device *net_dev) int i, table_entries; u32 rx_mode; - /* 635 Hash Table entires = 256(2^16) */ + /* 635 Hash Table entries = 256(2^16) */ if((sis_priv->chipset_rev >= SIS635A_900_REV) || (sis_priv->chipset_rev == SIS900B_900_REV)) table_entries = 16; diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c index ee48bfd6734..d1a86a080a6 100644 --- a/drivers/net/tulip/de4x5.c +++ b/drivers/net/tulip/de4x5.c @@ -513,7 +513,7 @@ struct mii_phy { u_char *rst; /* Start of reset sequence in SROM */ u_int mc; /* Media Capabilities */ u_int ana; /* NWay Advertisement */ - u_int fdx; /* Full DupleX capabilites for each media */ + u_int fdx; /* Full DupleX capabilities for each media */ u_int ttm; /* Transmit Threshold Mode for each media */ u_int mci; /* 21142 MII Connector Interrupt info */ }; diff --git a/drivers/net/tulip/pnic2.c b/drivers/net/tulip/pnic2.c index 55f4a9a631b..ab985023fcc 100644 --- a/drivers/net/tulip/pnic2.c +++ b/drivers/net/tulip/pnic2.c @@ -199,7 +199,7 @@ void pnic2_lnk_change(struct net_device *dev, int csr5) /* negotiation ended successfully */ /* get the link partners reply and mask out all but - * bits 24-21 which show the partners capabilites + * bits 24-21 which show the partners capabilities * and match those to what we advertised * * then begin to interpret the results of the negotiation. diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index cde35dd8790..c1ce87a5f8d 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -208,7 +208,7 @@ static const struct typhoon_card_info typhoon_card_info[] __devinitdata = { }; /* Notes on the new subsystem numbering scheme: - * bits 0-1 indicate crypto capabilites: (0) variable, (1) DES, or (2) 3DES + * bits 0-1 indicate crypto capabilities: (0) variable, (1) DES, or (2) 3DES * bit 4 indicates if this card has secured firmware (we don't support it) * bit 8 indicates if this is a (0) copper or (1) fiber card * bits 12-16 indicate card type: (0) client and (1) server @@ -788,7 +788,7 @@ typhoon_start_tx(struct sk_buff *skb, struct net_device *dev) /* we have two rings to choose from, but we only use txLo for now * If we start using the Hi ring as well, we'll need to update * typhoon_stop_runtime(), typhoon_interrupt(), typhoon_num_free_tx(), - * and TXHI_ENTIRES to match, as well as update the TSO code below + * and TXHI_ENTRIES to match, as well as update the TSO code below * to get the right DMA address */ txRing = &tp->txLoRing; diff --git a/drivers/net/wan/dscc4.c b/drivers/net/wan/dscc4.c index 1ff5de076d2..4505540e3c5 100644 --- a/drivers/net/wan/dscc4.c +++ b/drivers/net/wan/dscc4.c @@ -105,6 +105,7 @@ #include <linux/delay.h> #include <net/syncppp.h> #include <linux/hdlc.h> +#include <linux/mutex.h> /* Version */ static const char version[] = "$Id: dscc4.c,v 1.173 2003/09/20 23:55:34 romieu Exp $ for Linux\n"; @@ -112,7 +113,7 @@ static int debug; static int quartz; #ifdef CONFIG_DSCC4_PCI_RST -static DECLARE_MUTEX(dscc4_sem); +static DEFINE_MUTEX(dscc4_mutex); static u32 dscc4_pci_config_store[16]; #endif @@ -1018,7 +1019,7 @@ static void dscc4_pci_reset(struct pci_dev *pdev, void __iomem *ioaddr) { int i; - down(&dscc4_sem); + mutex_lock(&dscc4_mutex); for (i = 0; i < 16; i++) pci_read_config_dword(pdev, i << 2, dscc4_pci_config_store + i); @@ -1039,7 +1040,7 @@ static void dscc4_pci_reset(struct pci_dev *pdev, void __iomem *ioaddr) for (i = 0; i < 16; i++) pci_write_config_dword(pdev, i << 2, dscc4_pci_config_store[i]); - up(&dscc4_sem); + mutex_unlock(&dscc4_mutex); } #else #define dscc4_pci_reset(pdev,ioaddr) do {} while (0) diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c index 9d3b51c3ef5..29a756dd979 100644 --- a/drivers/net/wan/wanxl.c +++ b/drivers/net/wan/wanxl.c @@ -577,8 +577,8 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev, We set both dma_mask and consistent_dma_mask to 28 bits and pray pci_alloc_consistent() will use this info. It should work on most platforms */ - if (pci_set_consistent_dma_mask(pdev, 0x0FFFFFFF) || - pci_set_dma_mask(pdev, 0x0FFFFFFF)) { + if (pci_set_consistent_dma_mask(pdev, DMA_28BIT_MASK) || + pci_set_dma_mask(pdev, DMA_28BIT_MASK)) { printk(KERN_ERR "wanXL: No usable DMA configuration\n"); return -EIO; } diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c index 6fd0bf73683..8dfdfbd5966 100644 --- a/drivers/net/wireless/orinoco.c +++ b/drivers/net/wireless/orinoco.c @@ -3858,7 +3858,7 @@ static int orinoco_ioctl_setscan(struct net_device *dev, unsigned long flags; /* Note : you may have realised that, as this is a SET operation, - * this is priviledged and therefore a normal user can't + * this is privileged and therefore a normal user can't * perform scanning. * This is not an error, while the device perform scanning, * traffic doesn't flow, so it's a perfect DoS... diff --git a/drivers/net/wireless/prism54/isl_ioctl.c b/drivers/net/wireless/prism54/isl_ioctl.c index e5bb9f5ae42..989599ad33e 100644 --- a/drivers/net/wireless/prism54/isl_ioctl.c +++ b/drivers/net/wireless/prism54/isl_ioctl.c @@ -747,7 +747,7 @@ prism54_get_essid(struct net_device *ndev, struct iw_request_info *info, if (essid->length) { dwrq->flags = 1; /* set ESSID to ON for Wireless Extensions */ - /* if it is to big, trunk it */ + /* if it is too big, trunk it */ dwrq->length = min((u8)IW_ESSID_MAX_SIZE, essid->length); } else { dwrq->flags = 0; diff --git a/drivers/net/wireless/prism54/islpci_hotplug.c b/drivers/net/wireless/prism54/islpci_hotplug.c index b41d666fea3..bfa0cc319a0 100644 --- a/drivers/net/wireless/prism54/islpci_hotplug.c +++ b/drivers/net/wireless/prism54/islpci_hotplug.c @@ -22,6 +22,7 @@ #include <linux/pci.h> #include <linux/delay.h> #include <linux/init.h> /* For __init, __exit */ +#include <linux/dma-mapping.h> #include "prismcompat.h" #include "islpci_dev.h" @@ -124,7 +125,7 @@ prism54_probe(struct pci_dev *pdev, const struct pci_device_id *id) } /* enable PCI DMA */ - if (pci_set_dma_mask(pdev, 0xffffffff)) { + if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_ERR "%s: 32-bit PCI DMA not supported", DRV_NAME); goto do_pci_disable_device; } diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c index 330d3869b41..fc4bc9b94c7 100644 --- a/drivers/oprofile/cpu_buffer.c +++ b/drivers/oprofile/cpu_buffer.c @@ -217,11 +217,10 @@ static void oprofile_end_trace(struct oprofile_cpu_buffer * cpu_buf) cpu_buf->tracing = 0; } -void oprofile_add_sample(struct pt_regs * const regs, unsigned long event) +void oprofile_add_ext_sample(unsigned long pc, struct pt_regs * const regs, + unsigned long event, int is_kernel) { struct oprofile_cpu_buffer * cpu_buf = &cpu_buffer[smp_processor_id()]; - unsigned long pc = profile_pc(regs); - int is_kernel = !user_mode(regs); if (!backtrace_depth) { log_sample(cpu_buf, pc, is_kernel, event); @@ -238,6 +237,14 @@ void oprofile_add_sample(struct pt_regs * const regs, unsigned long event) oprofile_end_trace(cpu_buf); } +void oprofile_add_sample(struct pt_regs * const regs, unsigned long event) +{ + int is_kernel = !user_mode(regs); + unsigned long pc = profile_pc(regs); + + oprofile_add_ext_sample(pc, regs, event, is_kernel); +} + void oprofile_add_pc(unsigned long pc, int is_kernel, unsigned long event) { struct oprofile_cpu_buffer * cpu_buf = &cpu_buffer[smp_processor_id()]; diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c index e94b1e4a2a8..f0acb661c25 100644 --- a/drivers/oprofile/oprofile_stats.c +++ b/drivers/oprofile/oprofile_stats.c @@ -22,7 +22,7 @@ void oprofile_reset_stats(void) struct oprofile_cpu_buffer * cpu_buf; int i; - for_each_cpu(i) { + for_each_possible_cpu(i) { cpu_buf = &cpu_buffer[i]; cpu_buf->sample_received = 0; cpu_buf->sample_lost_overflow = 0; @@ -46,7 +46,7 @@ void oprofile_create_stats_files(struct super_block * sb, struct dentry * root) if (!dir) return; - for_each_cpu(i) { + for_each_possible_cpu(i) { cpu_buf = &cpu_buffer[i]; snprintf(buf, 10, "cpu%d", i); cpudir = oprofilefs_mkdir(sb, dir, buf); diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c index d6bae699749..b62da9b0cbf 100644 --- a/drivers/oprofile/oprofilefs.c +++ b/drivers/oprofile/oprofilefs.c @@ -130,7 +130,7 @@ static struct file_operations ulong_ro_fops = { static struct dentry * __oprofilefs_create_file(struct super_block * sb, - struct dentry * root, char const * name, struct file_operations * fops, + struct dentry * root, char const * name, const struct file_operations * fops, int perm) { struct dentry * dentry; @@ -203,7 +203,7 @@ int oprofilefs_create_ro_atomic(struct super_block * sb, struct dentry * root, int oprofilefs_create_file(struct super_block * sb, struct dentry * root, - char const * name, struct file_operations * fops) + char const * name, const struct file_operations * fops) { if (!__oprofilefs_create_file(sb, root, name, fops, 0644)) return -EFAULT; @@ -212,7 +212,7 @@ int oprofilefs_create_file(struct super_block * sb, struct dentry * root, int oprofilefs_create_file_perm(struct super_block * sb, struct dentry * root, - char const * name, struct file_operations * fops, int perm) + char const * name, const struct file_operations * fops, int perm) { if (!__oprofilefs_create_file(sb, root, name, fops, perm)) return -EFAULT; diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 3627a2d7f79..298f2ddb2c1 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -499,11 +499,16 @@ static int led_halt(struct notifier_block *, unsigned long, void *); static struct notifier_block led_notifier = { .notifier_call = led_halt, }; +static int notifier_disabled = 0; static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) { char *txt; - + + if (notifier_disabled) + return NOTIFY_OK; + + notifier_disabled = 1; switch (event) { case SYS_RESTART: txt = "SYSTEM RESTART"; break; @@ -527,7 +532,6 @@ static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) if (led_func_ptr) led_func_ptr(0xff); /* turn all LEDs ON */ - unregister_reboot_notifier(&led_notifier); return NOTIFY_OK; } @@ -758,6 +762,12 @@ not_found: return 1; } +static void __exit led_exit(void) +{ + unregister_reboot_notifier(&led_notifier); + return; +} + #ifdef CONFIG_PROC_FS module_init(led_create_procfs) #endif diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c index 54b2b7f20b9..0bcab83b408 100644 --- a/drivers/parisc/power.c +++ b/drivers/parisc/power.c @@ -251,7 +251,8 @@ static int __init power_init(void) } /* Register a call for panic conditions. */ - notifier_chain_register(&panic_notifier_list, &parisc_panic_block); + atomic_notifier_chain_register(&panic_notifier_list, + &parisc_panic_block); tasklet_enable(&power_tasklet); @@ -264,7 +265,8 @@ static void __exit power_exit(void) return; tasklet_disable(&power_tasklet); - notifier_chain_unregister(&panic_notifier_list, &parisc_panic_block); + atomic_notifier_chain_unregister(&panic_notifier_list, + &parisc_panic_block); power_tasklet.func = NULL; pdc_soft_power_button(0); } diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c index 9302b8fd746..d5890027f8a 100644 --- a/drivers/parport/parport_pc.c +++ b/drivers/parport/parport_pc.c @@ -3126,9 +3126,9 @@ parport_pc_find_isa_ports (int autoirq, int autodma) * autoirq is PARPORT_IRQ_NONE, PARPORT_IRQ_AUTO, or PARPORT_IRQ_PROBEONLY * autodma is PARPORT_DMA_NONE or PARPORT_DMA_AUTO */ -static int __init parport_pc_find_ports (int autoirq, int autodma) +static void __init parport_pc_find_ports (int autoirq, int autodma) { - int count = 0, r; + int count = 0, err; #ifdef CONFIG_PARPORT_PC_SUPERIO detect_and_report_winbond (); @@ -3140,23 +3140,17 @@ static int __init parport_pc_find_ports (int autoirq, int autodma) /* PnP ports, skip detection if SuperIO already found them */ if (!count) { - r = pnp_register_driver (&parport_pc_pnp_driver); - if (r >= 0) { + err = pnp_register_driver (&parport_pc_pnp_driver); + if (!err) pnp_registered_parport = 1; - count += r; - } } /* ISA ports and whatever (see asm/parport.h). */ - count += parport_pc_find_nonpci_ports (autoirq, autodma); - - r = pci_register_driver (&parport_pc_pci_driver); - if (r) - return r; - pci_registered_parport = 1; - count += 1; + parport_pc_find_nonpci_ports (autoirq, autodma); - return count; + err = pci_register_driver (&parport_pc_pci_driver); + if (!err) + pci_registered_parport = 1; } /* @@ -3381,8 +3375,6 @@ __setup("parport_init_mode=",parport_init_mode_setup); static int __init parport_pc_init(void) { - int count = 0; - if (parse_parport_params()) return -EINVAL; @@ -3395,12 +3387,11 @@ static int __init parport_pc_init(void) break; if ((io_hi[i]) == PARPORT_IOHI_AUTO) io_hi[i] = 0x400 + io[i]; - if (parport_pc_probe_port(io[i], io_hi[i], - irqval[i], dmaval[i], NULL)) - count++; + parport_pc_probe_port(io[i], io_hi[i], + irqval[i], dmaval[i], NULL); } } else - count += parport_pc_find_ports (irqval[0], dmaval[0]); + parport_pc_find_ports (irqval[0], dmaval[0]); return 0; } diff --git a/drivers/parport/share.c b/drivers/parport/share.c index ea62bed6bc8..bbbfd79adba 100644 --- a/drivers/parport/share.c +++ b/drivers/parport/share.c @@ -32,6 +32,7 @@ #include <linux/kmod.h> #include <linux/spinlock.h> +#include <linux/mutex.h> #include <asm/irq.h> #undef PARPORT_PARANOID @@ -50,7 +51,7 @@ static DEFINE_SPINLOCK(full_list_lock); static LIST_HEAD(drivers); -static DECLARE_MUTEX(registration_lock); +static DEFINE_MUTEX(registration_lock); /* What you can do to a port that's gone away.. */ static void dead_write_lines (struct parport *p, unsigned char b){} @@ -158,11 +159,11 @@ int parport_register_driver (struct parport_driver *drv) if (list_empty(&portlist)) get_lowlevel_driver (); - down(®istration_lock); + mutex_lock(®istration_lock); list_for_each_entry(port, &portlist, list) drv->attach(port); list_add(&drv->list, &drivers); - up(®istration_lock); + mutex_unlock(®istration_lock); return 0; } @@ -188,11 +189,11 @@ void parport_unregister_driver (struct parport_driver *drv) { struct parport *port; - down(®istration_lock); + mutex_lock(®istration_lock); list_del_init(&drv->list); list_for_each_entry(port, &portlist, list) drv->detach(port); - up(®istration_lock); + mutex_unlock(®istration_lock); } static void free_port (struct parport *port) @@ -366,7 +367,7 @@ void parport_announce_port (struct parport *port) #endif parport_proc_register(port); - down(®istration_lock); + mutex_lock(®istration_lock); spin_lock_irq(&parportlist_lock); list_add_tail(&port->list, &portlist); for (i = 1; i < 3; i++) { @@ -383,7 +384,7 @@ void parport_announce_port (struct parport *port) if (slave) attach_driver_chain(slave); } - up(®istration_lock); + mutex_unlock(®istration_lock); } /** @@ -409,7 +410,7 @@ void parport_remove_port(struct parport *port) { int i; - down(®istration_lock); + mutex_lock(®istration_lock); /* Spread the word. */ detach_driver_chain (port); @@ -436,7 +437,7 @@ void parport_remove_port(struct parport *port) } spin_unlock(&parportlist_lock); - up(®istration_lock); + mutex_unlock(®istration_lock); parport_proc_unregister(port); diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index 3eefe2cec72..46825fee3ae 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -19,7 +19,7 @@ #include <linux/string.h> #include <asm/pci-bridge.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #include <asm/rtas.h> #include <asm/vio.h> @@ -27,7 +27,7 @@ #include "rpaphp.h" #include "rpadlpar.h" -static DECLARE_MUTEX(rpadlpar_sem); +static DEFINE_MUTEX(rpadlpar_mutex); #define DLPAR_MODULE_NAME "rpadlpar_io" @@ -300,7 +300,7 @@ int dlpar_add_slot(char *drc_name) int node_type; int rc = -EIO; - if (down_interruptible(&rpadlpar_sem)) + if (mutex_lock_interruptible(&rpadlpar_mutex)) return -ERESTARTSYS; /* Find newly added node */ @@ -324,7 +324,7 @@ int dlpar_add_slot(char *drc_name) printk(KERN_INFO "%s: slot %s added\n", DLPAR_MODULE_NAME, drc_name); exit: - up(&rpadlpar_sem); + mutex_unlock(&rpadlpar_mutex); return rc; } @@ -417,7 +417,7 @@ int dlpar_remove_slot(char *drc_name) int node_type; int rc = 0; - if (down_interruptible(&rpadlpar_sem)) + if (mutex_lock_interruptible(&rpadlpar_mutex)) return -ERESTARTSYS; dn = find_dlpar_node(drc_name, &node_type); @@ -439,7 +439,7 @@ int dlpar_remove_slot(char *drc_name) } printk(KERN_INFO "%s: slot %s removed\n", DLPAR_MODULE_NAME, drc_name); exit: - up(&rpadlpar_sem); + mutex_unlock(&rpadlpar_mutex); return rc; } diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c index c402da8e78a..8cb9abde736 100644 --- a/drivers/pci/hotplug/sgi_hotplug.c +++ b/drivers/pci/hotplug/sgi_hotplug.c @@ -15,6 +15,7 @@ #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/types.h> +#include <linux/mutex.h> #include <asm/sn/addrs.h> #include <asm/sn/l1.h> @@ -81,7 +82,7 @@ static struct hotplug_slot_ops sn_hotplug_slot_ops = { .get_power_status = get_power_status, }; -static DECLARE_MUTEX(sn_hotplug_sem); +static DEFINE_MUTEX(sn_hotplug_mutex); static ssize_t path_show (struct hotplug_slot *bss_hotplug_slot, char *buf) @@ -346,7 +347,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) int rc; /* Serialize the Linux PCI infrastructure */ - down(&sn_hotplug_sem); + mutex_lock(&sn_hotplug_mutex); /* * Power-on and initialize the slot in the SN @@ -354,7 +355,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) */ rc = sn_slot_enable(bss_hotplug_slot, slot->device_num); if (rc) { - up(&sn_hotplug_sem); + mutex_unlock(&sn_hotplug_mutex); return rc; } @@ -362,7 +363,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) PCI_DEVFN(slot->device_num + 1, 0)); if (!num_funcs) { dev_dbg(slot->pci_bus->self, "no device in slot\n"); - up(&sn_hotplug_sem); + mutex_unlock(&sn_hotplug_mutex); return -ENODEV; } @@ -402,7 +403,7 @@ static int enable_slot(struct hotplug_slot *bss_hotplug_slot) if (new_ppb) pci_bus_add_devices(new_bus); - up(&sn_hotplug_sem); + mutex_unlock(&sn_hotplug_mutex); if (rc == 0) dev_dbg(slot->pci_bus->self, @@ -422,7 +423,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) int rc; /* Acquire update access to the bus */ - down(&sn_hotplug_sem); + mutex_lock(&sn_hotplug_mutex); /* is it okay to bring this slot down? */ rc = sn_slot_disable(bss_hotplug_slot, slot->device_num, @@ -450,7 +451,7 @@ static int disable_slot(struct hotplug_slot *bss_hotplug_slot) PCI_REQ_SLOT_DISABLE); leaving: /* Release the bus lock */ - up(&sn_hotplug_sem); + mutex_unlock(&sn_hotplug_mutex); return rc; } @@ -462,9 +463,9 @@ static inline int get_power_status(struct hotplug_slot *bss_hotplug_slot, struct pcibus_info *pcibus_info; pcibus_info = SN_PCIBUS_BUSSOFT_INFO(slot->pci_bus); - down(&sn_hotplug_sem); + mutex_lock(&sn_hotplug_mutex); *value = pcibus_info->pbi_enabled_devices & (1 << slot->device_num); - up(&sn_hotplug_sem); + mutex_unlock(&sn_hotplug_mutex); return 0; } diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c index b68eef25161..bb19c64073c 100644 --- a/drivers/pnp/card.c +++ b/drivers/pnp/card.c @@ -47,7 +47,7 @@ static void card_remove(struct pnp_dev * dev) { dev->card_link = NULL; } - + static void card_remove_first(struct pnp_dev * dev) { struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver); @@ -361,7 +361,7 @@ static int card_resume(struct pnp_dev *dev) int pnp_register_card_driver(struct pnp_card_driver * drv) { - int count; + int error; struct list_head *pos, *temp; drv->link.name = drv->name; @@ -372,21 +372,19 @@ int pnp_register_card_driver(struct pnp_card_driver * drv) drv->link.suspend = drv->suspend ? card_suspend : NULL; drv->link.resume = drv->resume ? card_resume : NULL; - count = pnp_register_driver(&drv->link); - if (count < 0) - return count; + error = pnp_register_driver(&drv->link); + if (error < 0) + return error; spin_lock(&pnp_lock); list_add_tail(&drv->global_list, &pnp_card_drivers); spin_unlock(&pnp_lock); - count = 0; - list_for_each_safe(pos,temp,&pnp_cards){ struct pnp_card *card = list_entry(pos, struct pnp_card, global_list); - count += card_probe(card,drv); + card_probe(card,drv); } - return count; + return 0; } /** diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c index 7cafacdd12b..e54c1538319 100644 --- a/drivers/pnp/driver.c +++ b/drivers/pnp/driver.c @@ -201,31 +201,14 @@ struct bus_type pnp_bus_type = { .resume = pnp_bus_resume, }; - -static int count_devices(struct device * dev, void * c) -{ - int * count = c; - (*count)++; - return 0; -} - int pnp_register_driver(struct pnp_driver *drv) { - int count; - pnp_dbg("the driver '%s' has been registered", drv->name); drv->driver.name = drv->name; drv->driver.bus = &pnp_bus_type; - count = driver_register(&drv->driver); - - /* get the number of initial matches */ - if (count >= 0){ - count = 0; - driver_for_each_device(&drv->driver, NULL, &count, count_devices); - } - return count; + return driver_register(&drv->driver); } void pnp_unregister_driver(struct pnp_driver *drv) diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c index b1b4b683cbd..ac7c2bb6c69 100644 --- a/drivers/pnp/isapnp/core.c +++ b/drivers/pnp/isapnp/core.c @@ -42,6 +42,7 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/isapnp.h> +#include <linux/mutex.h> #include <asm/io.h> #if 0 @@ -92,7 +93,7 @@ MODULE_LICENSE("GPL"); #define _LTAG_FIXEDMEM32RANGE 0x86 static unsigned char isapnp_checksum_value; -static DECLARE_MUTEX(isapnp_cfg_mutex); +static DEFINE_MUTEX(isapnp_cfg_mutex); static int isapnp_detected; static int isapnp_csn_count; @@ -903,7 +904,7 @@ int isapnp_cfg_begin(int csn, int logdev) { if (csn < 1 || csn > isapnp_csn_count || logdev > 10) return -EINVAL; - down(&isapnp_cfg_mutex); + mutex_lock(&isapnp_cfg_mutex); isapnp_wait(); isapnp_key(); isapnp_wake(csn); @@ -929,7 +930,7 @@ int isapnp_cfg_begin(int csn, int logdev) int isapnp_cfg_end(void) { isapnp_wait(); - up(&isapnp_cfg_mutex); + mutex_unlock(&isapnp_cfg_mutex); return 0; } diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig new file mode 100644 index 00000000000..929dd809057 --- /dev/null +++ b/drivers/rtc/Kconfig @@ -0,0 +1,165 @@ +\# +# RTC class/drivers configuration +# + +menu "Real Time Clock" + +config RTC_LIB + tristate + +config RTC_CLASS + tristate "RTC class" + depends on EXPERIMENTAL + default n + select RTC_LIB + help + Generic RTC class support. If you say yes here, you will + be allowed to plug one or more RTCs to your system. You will + probably want to enable one of more of the interfaces below. + + This driver can also be built as a module. If so, the module + will be called rtc-class. + +config RTC_HCTOSYS + bool "Set system time from RTC on startup" + depends on RTC_CLASS = y + default y + help + If you say yes here, the system time will be set using + the value read from the specified RTC device. This is useful + in order to avoid unnecessary fschk runs. + +config RTC_HCTOSYS_DEVICE + string "The RTC to read the time from" + depends on RTC_HCTOSYS = y + default "rtc0" + help + The RTC device that will be used as the source for + the system time, usually rtc0. + +comment "RTC interfaces" + depends on RTC_CLASS + +config RTC_INTF_SYSFS + tristate "sysfs" + depends on RTC_CLASS && SYSFS + default RTC_CLASS + help + Say yes here if you want to use your RTC using the sysfs + interface, /sys/class/rtc/rtcX . + + This driver can also be built as a module. If so, the module + will be called rtc-sysfs. + +config RTC_INTF_PROC + tristate "proc" + depends on RTC_CLASS && PROC_FS + default RTC_CLASS + help + Say yes here if you want to use your RTC using the proc + interface, /proc/driver/rtc . + + This driver can also be built as a module. If so, the module + will be called rtc-proc. + +config RTC_INTF_DEV + tristate "dev" + depends on RTC_CLASS + default RTC_CLASS + help + Say yes here if you want to use your RTC using the dev + interface, /dev/rtc . + + This driver can also be built as a module. If so, the module + will be called rtc-dev. + +comment "RTC drivers" + depends on RTC_CLASS + +config RTC_DRV_X1205 + tristate "Xicor/Intersil X1205" + depends on RTC_CLASS && I2C + help + If you say yes here you get support for the + Xicor/Intersil X1205 RTC chip. + + This driver can also be built as a module. If so, the module + will be called rtc-x1205. + +config RTC_DRV_DS1672 + tristate "Dallas/Maxim DS1672" + depends on RTC_CLASS && I2C + help + If you say yes here you get support for the + Dallas/Maxim DS1672 timekeeping chip. + + This driver can also be built as a module. If so, the module + will be called rtc-ds1672. + +config RTC_DRV_PCF8563 + tristate "Philips PCF8563/Epson RTC8564" + depends on RTC_CLASS && I2C + help + If you say yes here you get support for the + Philips PCF8563 RTC chip. The Epson RTC8564 + should work as well. + + This driver can also be built as a module. If so, the module + will be called rtc-pcf8563. + +config RTC_DRV_RS5C372 + tristate "Ricoh RS5C372A/B" + depends on RTC_CLASS && I2C + help + If you say yes here you get support for the + Ricoh RS5C372A and RS5C372B RTC chips. + + This driver can also be built as a module. If so, the module + will be called rtc-rs5c372. + +config RTC_DRV_M48T86 + tristate "ST M48T86/Dallas DS12887" + depends on RTC_CLASS + help + If you say Y here you will get support for the + ST M48T86 and Dallas DS12887 RTC chips. + + This driver can also be built as a module. If so, the module + will be called rtc-m48t86. + +config RTC_DRV_EP93XX + tristate "Cirrus Logic EP93XX" + depends on RTC_CLASS && ARCH_EP93XX + help + If you say yes here you get support for the + RTC embedded in the Cirrus Logic EP93XX processors. + + This driver can also be built as a module. If so, the module + will be called rtc-ep93xx. + +config RTC_DRV_SA1100 + tristate "SA11x0/PXA2xx" + depends on RTC_CLASS && (ARCH_SA1100 || ARCH_PXA) + help + If you say Y here you will get access to the real time clock + built into your SA11x0 or PXA2xx CPU. + + To compile this driver as a module, choose M here: the + module will be called rtc-sa1100. + +config RTC_DRV_TEST + tristate "Test driver/device" + depends on RTC_CLASS + help + If you say yes here you get support for the + RTC test driver. It's a software RTC which can be + used to test the RTC subsystem APIs. It gets + the time from the system clock. + You want this driver only if you are doing development + on the RTC subsystem. Please read the source code + for further details. + + This driver can also be built as a module. If so, the module + will be called rtc-test. + +endmenu diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile new file mode 100644 index 00000000000..8d4c7fe88d5 --- /dev/null +++ b/drivers/rtc/Makefile @@ -0,0 +1,21 @@ +# +# Makefile for RTC class/drivers. +# + +obj-$(CONFIG_RTC_LIB) += rtc-lib.o +obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o +obj-$(CONFIG_RTC_CLASS) += rtc-core.o +rtc-core-y := class.o interface.o + +obj-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o +obj-$(CONFIG_RTC_INTF_PROC) += rtc-proc.o +obj-$(CONFIG_RTC_INTF_DEV) += rtc-dev.o + +obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o +obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o +obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o +obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o +obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o +obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o +obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o +obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c new file mode 100644 index 00000000000..8533936d50d --- /dev/null +++ b/drivers/rtc/class.c @@ -0,0 +1,145 @@ +/* + * RTC subsystem, base class + * + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * class skeleton from drivers/hwmon/hwmon.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/kdev_t.h> +#include <linux/idr.h> + +static DEFINE_IDR(rtc_idr); +static DEFINE_MUTEX(idr_lock); +struct class *rtc_class; + +static void rtc_device_release(struct class_device *class_dev) +{ + struct rtc_device *rtc = to_rtc_device(class_dev); + mutex_lock(&idr_lock); + idr_remove(&rtc_idr, rtc->id); + mutex_unlock(&idr_lock); + kfree(rtc); +} + +/** + * rtc_device_register - register w/ RTC class + * @dev: the device to register + * + * rtc_device_unregister() must be called when the class device is no + * longer needed. + * + * Returns the pointer to the new struct class device. + */ +struct rtc_device *rtc_device_register(const char *name, struct device *dev, + struct rtc_class_ops *ops, + struct module *owner) +{ + struct rtc_device *rtc; + int id, err; + + if (idr_pre_get(&rtc_idr, GFP_KERNEL) == 0) { + err = -ENOMEM; + goto exit; + } + + + mutex_lock(&idr_lock); + err = idr_get_new(&rtc_idr, NULL, &id); + mutex_unlock(&idr_lock); + + if (err < 0) + goto exit; + + id = id & MAX_ID_MASK; + + rtc = kzalloc(sizeof(struct rtc_device), GFP_KERNEL); + if (rtc == NULL) { + err = -ENOMEM; + goto exit_idr; + } + + rtc->id = id; + rtc->ops = ops; + rtc->owner = owner; + rtc->class_dev.dev = dev; + rtc->class_dev.class = rtc_class; + rtc->class_dev.release = rtc_device_release; + + mutex_init(&rtc->ops_lock); + spin_lock_init(&rtc->irq_lock); + spin_lock_init(&rtc->irq_task_lock); + + strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE); + snprintf(rtc->class_dev.class_id, BUS_ID_SIZE, "rtc%d", id); + + err = class_device_register(&rtc->class_dev); + if (err) + goto exit_kfree; + + dev_info(dev, "rtc core: registered %s as %s\n", + rtc->name, rtc->class_dev.class_id); + + return rtc; + +exit_kfree: + kfree(rtc); + +exit_idr: + idr_remove(&rtc_idr, id); + +exit: + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(rtc_device_register); + + +/** + * rtc_device_unregister - removes the previously registered RTC class device + * + * @rtc: the RTC class device to destroy + */ +void rtc_device_unregister(struct rtc_device *rtc) +{ + mutex_lock(&rtc->ops_lock); + rtc->ops = NULL; + mutex_unlock(&rtc->ops_lock); + class_device_unregister(&rtc->class_dev); +} +EXPORT_SYMBOL_GPL(rtc_device_unregister); + +int rtc_interface_register(struct class_interface *intf) +{ + intf->class = rtc_class; + return class_interface_register(intf); +} +EXPORT_SYMBOL_GPL(rtc_interface_register); + +static int __init rtc_init(void) +{ + rtc_class = class_create(THIS_MODULE, "rtc"); + if (IS_ERR(rtc_class)) { + printk(KERN_ERR "%s: couldn't create class\n", __FILE__); + return PTR_ERR(rtc_class); + } + return 0; +} + +static void __exit rtc_exit(void) +{ + class_destroy(rtc_class); +} + +module_init(rtc_init); +module_exit(rtc_exit); + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towerteh.it>"); +MODULE_DESCRIPTION("RTC class support"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/hctosys.c b/drivers/rtc/hctosys.c new file mode 100644 index 00000000000..d02fe9a0001 --- /dev/null +++ b/drivers/rtc/hctosys.c @@ -0,0 +1,69 @@ +/* + * RTC subsystem, initialize system time on startup + * + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/rtc.h> + +/* IMPORTANT: the RTC only stores whole seconds. It is arbitrary + * whether it stores the most close value or the value with partial + * seconds truncated. However, it is important that we use it to store + * the truncated value. This is because otherwise it is necessary, + * in an rtc sync function, to read both xtime.tv_sec and + * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read + * of >32bits is not possible. So storing the most close value would + * slow down the sync API. So here we have the truncated value and + * the best guess is to add 0.5s. + */ + +static int __init rtc_hctosys(void) +{ + int err; + struct rtc_time tm; + struct class_device *class_dev = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE); + + if (class_dev == NULL) { + printk("%s: unable to open rtc device (%s)\n", + __FILE__, CONFIG_RTC_HCTOSYS_DEVICE); + return -ENODEV; + } + + err = rtc_read_time(class_dev, &tm); + if (err == 0) { + err = rtc_valid_tm(&tm); + if (err == 0) { + struct timespec tv; + + tv.tv_nsec = NSEC_PER_SEC >> 1; + + rtc_tm_to_time(&tm, &tv.tv_sec); + + do_settimeofday(&tv); + + dev_info(class_dev->dev, + "setting the system clock to " + "%d-%02d-%02d %02d:%02d:%02d (%u)\n", + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, + tm.tm_hour, tm.tm_min, tm.tm_sec, + (unsigned int) tv.tv_sec); + } + else + dev_err(class_dev->dev, + "hctosys: invalid date/time\n"); + } + else + dev_err(class_dev->dev, + "hctosys: unable to read the hardware clock\n"); + + rtc_class_close(class_dev); + + return 0; +} + +late_initcall(rtc_hctosys); diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c new file mode 100644 index 00000000000..56e490709b8 --- /dev/null +++ b/drivers/rtc/interface.c @@ -0,0 +1,277 @@ +/* + * RTC subsystem, interface functions + * + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * based on arch/arm/common/rtctime.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/rtc.h> + +int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm) +{ + int err; + struct rtc_device *rtc = to_rtc_device(class_dev); + + err = mutex_lock_interruptible(&rtc->ops_lock); + if (err) + return -EBUSY; + + if (!rtc->ops) + err = -ENODEV; + else if (!rtc->ops->read_time) + err = -EINVAL; + else { + memset(tm, 0, sizeof(struct rtc_time)); + err = rtc->ops->read_time(class_dev->dev, tm); + } + + mutex_unlock(&rtc->ops_lock); + return err; +} +EXPORT_SYMBOL_GPL(rtc_read_time); + +int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm) +{ + int err; + struct rtc_device *rtc = to_rtc_device(class_dev); + + err = rtc_valid_tm(tm); + if (err != 0) + return err; + + err = mutex_lock_interruptible(&rtc->ops_lock); + if (err) + return -EBUSY; + + if (!rtc->ops) + err = -ENODEV; + else if (!rtc->ops->set_time) + err = -EINVAL; + else + err = rtc->ops->set_time(class_dev->dev, tm); + + mutex_unlock(&rtc->ops_lock); + return err; +} +EXPORT_SYMBOL_GPL(rtc_set_time); + +int rtc_set_mmss(struct class_device *class_dev, unsigned long secs) +{ + int err; + struct rtc_device *rtc = to_rtc_device(class_dev); + + err = mutex_lock_interruptible(&rtc->ops_lock); + if (err) + return -EBUSY; + + if (!rtc->ops) + err = -ENODEV; + else if (rtc->ops->set_mmss) + err = rtc->ops->set_mmss(class_dev->dev, secs); + else if (rtc->ops->read_time && rtc->ops->set_time) { + struct rtc_time new, old; + + err = rtc->ops->read_time(class_dev->dev, &old); + if (err == 0) { + rtc_time_to_tm(secs, &new); + + /* + * avoid writing when we're going to change the day of + * the month. We will retry in the next minute. This + * basically means that if the RTC must not drift + * by more than 1 minute in 11 minutes. + */ + if (!((old.tm_hour == 23 && old.tm_min == 59) || + (new.tm_hour == 23 && new.tm_min == 59))) + err = rtc->ops->set_time(class_dev->dev, &new); + } + } + else + err = -EINVAL; + + mutex_unlock(&rtc->ops_lock); + + return err; +} +EXPORT_SYMBOL_GPL(rtc_set_mmss); + +int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) +{ + int err; + struct rtc_device *rtc = to_rtc_device(class_dev); + + err = mutex_lock_interruptible(&rtc->ops_lock); + if (err) + return -EBUSY; + + if (rtc->ops == NULL) + err = -ENODEV; + else if (!rtc->ops->read_alarm) + err = -EINVAL; + else { + memset(alarm, 0, sizeof(struct rtc_wkalrm)); + err = rtc->ops->read_alarm(class_dev->dev, alarm); + } + + mutex_unlock(&rtc->ops_lock); + return err; +} +EXPORT_SYMBOL_GPL(rtc_read_alarm); + +int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) +{ + int err; + struct rtc_device *rtc = to_rtc_device(class_dev); + + err = mutex_lock_interruptible(&rtc->ops_lock); + if (err) + return -EBUSY; + + if (!rtc->ops) + err = -ENODEV; + else if (!rtc->ops->set_alarm) + err = -EINVAL; + else + err = rtc->ops->set_alarm(class_dev->dev, alarm); + + mutex_unlock(&rtc->ops_lock); + return err; +} +EXPORT_SYMBOL_GPL(rtc_set_alarm); + +void rtc_update_irq(struct class_device *class_dev, + unsigned long num, unsigned long events) +{ + struct rtc_device *rtc = to_rtc_device(class_dev); + + spin_lock(&rtc->irq_lock); + rtc->irq_data = (rtc->irq_data + (num << 8)) | events; + spin_unlock(&rtc->irq_lock); + + spin_lock(&rtc->irq_task_lock); + if (rtc->irq_task) + rtc->irq_task->func(rtc->irq_task->private_data); + spin_unlock(&rtc->irq_task_lock); + + wake_up_interruptible(&rtc->irq_queue); + kill_fasync(&rtc->async_queue, SIGIO, POLL_IN); +} +EXPORT_SYMBOL_GPL(rtc_update_irq); + +struct class_device *rtc_class_open(char *name) +{ + struct class_device *class_dev = NULL, + *class_dev_tmp; + + down(&rtc_class->sem); + list_for_each_entry(class_dev_tmp, &rtc_class->children, node) { + if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) { + class_dev = class_dev_tmp; + break; + } + } + + if (class_dev) { + if (!try_module_get(to_rtc_device(class_dev)->owner)) + class_dev = NULL; + } + up(&rtc_class->sem); + + return class_dev; +} +EXPORT_SYMBOL_GPL(rtc_class_open); + +void rtc_class_close(struct class_device *class_dev) +{ + module_put(to_rtc_device(class_dev)->owner); +} +EXPORT_SYMBOL_GPL(rtc_class_close); + +int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task) +{ + int retval = -EBUSY; + struct rtc_device *rtc = to_rtc_device(class_dev); + + if (task == NULL || task->func == NULL) + return -EINVAL; + + spin_lock(&rtc->irq_task_lock); + if (rtc->irq_task == NULL) { + rtc->irq_task = task; + retval = 0; + } + spin_unlock(&rtc->irq_task_lock); + + return retval; +} +EXPORT_SYMBOL_GPL(rtc_irq_register); + +void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task) +{ + struct rtc_device *rtc = to_rtc_device(class_dev); + + spin_lock(&rtc->irq_task_lock); + if (rtc->irq_task == task) + rtc->irq_task = NULL; + spin_unlock(&rtc->irq_task_lock); +} +EXPORT_SYMBOL_GPL(rtc_irq_unregister); + +int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int enabled) +{ + int err = 0; + unsigned long flags; + struct rtc_device *rtc = to_rtc_device(class_dev); + + spin_lock_irqsave(&rtc->irq_task_lock, flags); + if (rtc->irq_task != task) + err = -ENXIO; + spin_unlock_irqrestore(&rtc->irq_task_lock, flags); + + if (err == 0) + err = rtc->ops->irq_set_state(class_dev->dev, enabled); + + return err; +} +EXPORT_SYMBOL_GPL(rtc_irq_set_state); + +int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int freq) +{ + int err = 0, tmp = 0; + unsigned long flags; + struct rtc_device *rtc = to_rtc_device(class_dev); + + /* allowed range is 2-8192 */ + if (freq < 2 || freq > 8192) + return -EINVAL; +/* + FIXME: this does not belong here, will move where appropriate + at a later stage. It cannot hurt right now, trust me :) + if ((freq > rtc_max_user_freq) && (!capable(CAP_SYS_RESOURCE))) + return -EACCES; +*/ + /* check if freq is a power of 2 */ + while (freq > (1 << tmp)) + tmp++; + + if (freq != (1 << tmp)) + return -EINVAL; + + spin_lock_irqsave(&rtc->irq_task_lock, flags); + if (rtc->irq_task != task) + err = -ENXIO; + spin_unlock_irqrestore(&rtc->irq_task_lock, flags); + + if (err == 0) { + err = rtc->ops->irq_set_freq(class_dev->dev, freq); + if (err == 0) + rtc->irq_freq = freq; + } + return err; +} diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c new file mode 100644 index 00000000000..b1e3e6179e5 --- /dev/null +++ b/drivers/rtc/rtc-dev.c @@ -0,0 +1,382 @@ +/* + * RTC subsystem, dev interface + * + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * based on arch/arm/common/rtctime.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/rtc.h> + +static struct class *rtc_dev_class; +static dev_t rtc_devt; + +#define RTC_DEV_MAX 16 /* 16 RTCs should be enough for everyone... */ + +static int rtc_dev_open(struct inode *inode, struct file *file) +{ + int err; + struct rtc_device *rtc = container_of(inode->i_cdev, + struct rtc_device, char_dev); + struct rtc_class_ops *ops = rtc->ops; + + /* We keep the lock as long as the device is in use + * and return immediately if busy + */ + if (!(mutex_trylock(&rtc->char_lock))) + return -EBUSY; + + file->private_data = &rtc->class_dev; + + err = ops->open ? ops->open(rtc->class_dev.dev) : 0; + if (err == 0) { + spin_lock_irq(&rtc->irq_lock); + rtc->irq_data = 0; + spin_unlock_irq(&rtc->irq_lock); + + return 0; + } + + /* something has gone wrong, release the lock */ + mutex_unlock(&rtc->char_lock); + return err; +} + + +static ssize_t +rtc_dev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) +{ + struct rtc_device *rtc = to_rtc_device(file->private_data); + + DECLARE_WAITQUEUE(wait, current); + unsigned long data; + ssize_t ret; + + if (count < sizeof(unsigned long)) + return -EINVAL; + + add_wait_queue(&rtc->irq_queue, &wait); + do { + __set_current_state(TASK_INTERRUPTIBLE); + + spin_lock_irq(&rtc->irq_lock); + data = rtc->irq_data; + rtc->irq_data = 0; + spin_unlock_irq(&rtc->irq_lock); + + if (data != 0) { + ret = 0; + break; + } + if (file->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + break; + } + if (signal_pending(current)) { + ret = -ERESTARTSYS; + break; + } + schedule(); + } while (1); + set_current_state(TASK_RUNNING); + remove_wait_queue(&rtc->irq_queue, &wait); + + if (ret == 0) { + /* Check for any data updates */ + if (rtc->ops->read_callback) + data = rtc->ops->read_callback(rtc->class_dev.dev, data); + + ret = put_user(data, (unsigned long __user *)buf); + if (ret == 0) + ret = sizeof(unsigned long); + } + return ret; +} + +static unsigned int rtc_dev_poll(struct file *file, poll_table *wait) +{ + struct rtc_device *rtc = to_rtc_device(file->private_data); + unsigned long data; + + poll_wait(file, &rtc->irq_queue, wait); + + data = rtc->irq_data; + + return (data != 0) ? (POLLIN | POLLRDNORM) : 0; +} + +static int rtc_dev_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + int err = 0; + struct class_device *class_dev = file->private_data; + struct rtc_device *rtc = to_rtc_device(class_dev); + struct rtc_class_ops *ops = rtc->ops; + struct rtc_time tm; + struct rtc_wkalrm alarm; + void __user *uarg = (void __user *) arg; + + /* avoid conflicting IRQ users */ + if (cmd == RTC_PIE_ON || cmd == RTC_PIE_OFF || cmd == RTC_IRQP_SET) { + spin_lock(&rtc->irq_task_lock); + if (rtc->irq_task) + err = -EBUSY; + spin_unlock(&rtc->irq_task_lock); + + if (err < 0) + return err; + } + + /* try the driver's ioctl interface */ + if (ops->ioctl) { + err = ops->ioctl(class_dev->dev, cmd, arg); + if (err != -EINVAL) + return err; + } + + /* if the driver does not provide the ioctl interface + * or if that particular ioctl was not implemented + * (-EINVAL), we will try to emulate here. + */ + + switch (cmd) { + case RTC_ALM_READ: + err = rtc_read_alarm(class_dev, &alarm); + if (err < 0) + return err; + + if (copy_to_user(uarg, &alarm.time, sizeof(tm))) + return -EFAULT; + break; + + case RTC_ALM_SET: + if (copy_from_user(&alarm.time, uarg, sizeof(tm))) + return -EFAULT; + + alarm.enabled = 0; + alarm.pending = 0; + alarm.time.tm_mday = -1; + alarm.time.tm_mon = -1; + alarm.time.tm_year = -1; + alarm.time.tm_wday = -1; + alarm.time.tm_yday = -1; + alarm.time.tm_isdst = -1; + err = rtc_set_alarm(class_dev, &alarm); + break; + + case RTC_RD_TIME: + err = rtc_read_time(class_dev, &tm); + if (err < 0) + return err; + + if (copy_to_user(uarg, &tm, sizeof(tm))) + return -EFAULT; + break; + + case RTC_SET_TIME: + if (!capable(CAP_SYS_TIME)) + return -EACCES; + + if (copy_from_user(&tm, uarg, sizeof(tm))) + return -EFAULT; + + err = rtc_set_time(class_dev, &tm); + break; +#if 0 + case RTC_EPOCH_SET: +#ifndef rtc_epoch + /* + * There were no RTC clocks before 1900. + */ + if (arg < 1900) { + err = -EINVAL; + break; + } + if (!capable(CAP_SYS_TIME)) { + err = -EACCES; + break; + } + rtc_epoch = arg; + err = 0; +#endif + break; + + case RTC_EPOCH_READ: + err = put_user(rtc_epoch, (unsigned long __user *)uarg); + break; +#endif + case RTC_WKALM_SET: + if (copy_from_user(&alarm, uarg, sizeof(alarm))) + return -EFAULT; + + err = rtc_set_alarm(class_dev, &alarm); + break; + + case RTC_WKALM_RD: + err = rtc_read_alarm(class_dev, &alarm); + if (err < 0) + return err; + + if (copy_to_user(uarg, &alarm, sizeof(alarm))) + return -EFAULT; + break; + + default: + err = -EINVAL; + break; + } + + return err; +} + +static int rtc_dev_release(struct inode *inode, struct file *file) +{ + struct rtc_device *rtc = to_rtc_device(file->private_data); + + if (rtc->ops->release) + rtc->ops->release(rtc->class_dev.dev); + + mutex_unlock(&rtc->char_lock); + return 0; +} + +static int rtc_dev_fasync(int fd, struct file *file, int on) +{ + struct rtc_device *rtc = to_rtc_device(file->private_data); + return fasync_helper(fd, file, on, &rtc->async_queue); +} + +static struct file_operations rtc_dev_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .read = rtc_dev_read, + .poll = rtc_dev_poll, + .ioctl = rtc_dev_ioctl, + .open = rtc_dev_open, + .release = rtc_dev_release, + .fasync = rtc_dev_fasync, +}; + +/* insertion/removal hooks */ + +static int rtc_dev_add_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + int err = 0; + struct rtc_device *rtc = to_rtc_device(class_dev); + + if (rtc->id >= RTC_DEV_MAX) { + dev_err(class_dev->dev, "too many RTCs\n"); + return -EINVAL; + } + + mutex_init(&rtc->char_lock); + spin_lock_init(&rtc->irq_lock); + init_waitqueue_head(&rtc->irq_queue); + + cdev_init(&rtc->char_dev, &rtc_dev_fops); + rtc->char_dev.owner = rtc->owner; + + if (cdev_add(&rtc->char_dev, MKDEV(MAJOR(rtc_devt), rtc->id), 1)) { + cdev_del(&rtc->char_dev); + dev_err(class_dev->dev, + "failed to add char device %d:%d\n", + MAJOR(rtc_devt), rtc->id); + return -ENODEV; + } + + rtc->rtc_dev = class_device_create(rtc_dev_class, NULL, + MKDEV(MAJOR(rtc_devt), rtc->id), + class_dev->dev, "rtc%d", rtc->id); + if (IS_ERR(rtc->rtc_dev)) { + dev_err(class_dev->dev, "cannot create rtc_dev device\n"); + err = PTR_ERR(rtc->rtc_dev); + goto err_cdev_del; + } + + dev_info(class_dev->dev, "rtc intf: dev (%d:%d)\n", + MAJOR(rtc->rtc_dev->devt), + MINOR(rtc->rtc_dev->devt)); + + return 0; + +err_cdev_del: + + cdev_del(&rtc->char_dev); + return err; +} + +static void rtc_dev_remove_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + struct rtc_device *rtc = to_rtc_device(class_dev); + + if (rtc->rtc_dev) { + dev_dbg(class_dev->dev, "removing char %d:%d\n", + MAJOR(rtc->rtc_dev->devt), + MINOR(rtc->rtc_dev->devt)); + + class_device_unregister(rtc->rtc_dev); + cdev_del(&rtc->char_dev); + } +} + +/* interface registration */ + +static struct class_interface rtc_dev_interface = { + .add = &rtc_dev_add_device, + .remove = &rtc_dev_remove_device, +}; + +static int __init rtc_dev_init(void) +{ + int err; + + rtc_dev_class = class_create(THIS_MODULE, "rtc-dev"); + if (IS_ERR(rtc_dev_class)) + return PTR_ERR(rtc_dev_class); + + err = alloc_chrdev_region(&rtc_devt, 0, RTC_DEV_MAX, "rtc"); + if (err < 0) { + printk(KERN_ERR "%s: failed to allocate char dev region\n", + __FILE__); + goto err_destroy_class; + } + + err = rtc_interface_register(&rtc_dev_interface); + if (err < 0) { + printk(KERN_ERR "%s: failed to register the interface\n", + __FILE__); + goto err_unregister_chrdev; + } + + return 0; + +err_unregister_chrdev: + unregister_chrdev_region(rtc_devt, RTC_DEV_MAX); + +err_destroy_class: + class_destroy(rtc_dev_class); + + return err; +} + +static void __exit rtc_dev_exit(void) +{ + class_interface_unregister(&rtc_dev_interface); + class_destroy(rtc_dev_class); + unregister_chrdev_region(rtc_devt, RTC_DEV_MAX); +} + +module_init(rtc_dev_init); +module_exit(rtc_dev_exit); + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("RTC class dev interface"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-ds1672.c b/drivers/rtc/rtc-ds1672.c new file mode 100644 index 00000000000..358695a416f --- /dev/null +++ b/drivers/rtc/rtc-ds1672.c @@ -0,0 +1,233 @@ +/* + * An rtc/i2c driver for the Dallas DS1672 + * Copyright 2005 Alessandro Zummo + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/rtc.h> + +#define DRV_VERSION "0.2" + +/* Addresses to scan: none. This chip cannot be detected. */ +static unsigned short normal_i2c[] = { I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD; + +/* Registers */ + +#define DS1672_REG_CNT_BASE 0 +#define DS1672_REG_CONTROL 4 +#define DS1672_REG_TRICKLE 5 + + +/* Prototypes */ +static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind); + +/* + * In the routines that deal directly with the ds1672 hardware, we use + * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch + * Epoch is initialized as 2000. Time is set to UTC. + */ +static int ds1672_get_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + unsigned long time; + unsigned char addr = DS1672_REG_CNT_BASE; + unsigned char buf[4]; + + struct i2c_msg msgs[] = { + { client->addr, 0, 1, &addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 4, buf }, /* read date */ + }; + + /* read date registers */ + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + dev_dbg(&client->dev, + "%s: raw read data - counters=%02x,%02x,%02x,%02x\n" + __FUNCTION__, + buf[0], buf[1], buf[2], buf[3]); + + time = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; + + rtc_time_to_tm(time, tm); + + dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + return 0; +} + +static int ds1672_set_mmss(struct i2c_client *client, unsigned long secs) +{ + int xfer; + unsigned char buf[5]; + + buf[0] = DS1672_REG_CNT_BASE; + buf[1] = secs & 0x000000FF; + buf[2] = (secs & 0x0000FF00) >> 8; + buf[3] = (secs & 0x00FF0000) >> 16; + buf[4] = (secs & 0xFF000000) >> 24; + + xfer = i2c_master_send(client, buf, 5); + if (xfer != 5) { + dev_err(&client->dev, "%s: send: %d\n", __FUNCTION__, xfer); + return -EIO; + } + + return 0; +} + +static int ds1672_set_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + unsigned long secs; + + dev_dbg(&client->dev, + "%s: secs=%d, mins=%d, hours=%d, ", + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + rtc_tm_to_time(tm, &secs); + + return ds1672_set_mmss(client, secs); +} + +static int ds1672_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + return ds1672_get_datetime(to_i2c_client(dev), tm); +} + +static int ds1672_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + return ds1672_set_datetime(to_i2c_client(dev), tm); +} + +static int ds1672_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + return ds1672_set_mmss(to_i2c_client(dev), secs); +} + +static struct rtc_class_ops ds1672_rtc_ops = { + .read_time = ds1672_rtc_read_time, + .set_time = ds1672_rtc_set_time, + .set_mmss = ds1672_rtc_set_mmss, +}; + +static int ds1672_attach(struct i2c_adapter *adapter) +{ + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + return i2c_probe(adapter, &addr_data, ds1672_probe); +} + +static int ds1672_detach(struct i2c_client *client) +{ + int err; + struct rtc_device *rtc = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s\n", __FUNCTION__); + + if (rtc) + rtc_device_unregister(rtc); + + if ((err = i2c_detach_client(client))) + return err; + + kfree(client); + + return 0; +} + +static struct i2c_driver ds1672_driver = { + .driver = { + .name = "ds1672", + }, + .id = I2C_DRIVERID_DS1672, + .attach_adapter = &ds1672_attach, + .detach_client = &ds1672_detach, +}; + +static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind) +{ + int err = 0; + struct i2c_client *client; + struct rtc_device *rtc; + + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + + if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { + err = -ENODEV; + goto exit; + } + + if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { + err = -ENOMEM; + goto exit; + } + + /* I2C client */ + client->addr = address; + client->driver = &ds1672_driver; + client->adapter = adapter; + + strlcpy(client->name, ds1672_driver.driver.name, I2C_NAME_SIZE); + + /* Inform the i2c layer */ + if ((err = i2c_attach_client(client))) + goto exit_kfree; + + dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); + + rtc = rtc_device_register(ds1672_driver.driver.name, &client->dev, + &ds1672_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + err = PTR_ERR(rtc); + dev_err(&client->dev, + "unable to register the class device\n"); + goto exit_detach; + } + + i2c_set_clientdata(client, rtc); + + return 0; + +exit_detach: + i2c_detach_client(client); + +exit_kfree: + kfree(client); + +exit: + return err; +} + +static int __init ds1672_init(void) +{ + return i2c_add_driver(&ds1672_driver); +} + +static void __exit ds1672_exit(void) +{ + i2c_del_driver(&ds1672_driver); +} + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("Dallas/Maxim DS1672 timekeeper driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +module_init(ds1672_init); +module_exit(ds1672_exit); diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c new file mode 100644 index 00000000000..0dd80ea686a --- /dev/null +++ b/drivers/rtc/rtc-ep93xx.c @@ -0,0 +1,162 @@ +/* + * A driver for the RTC embedded in the Cirrus Logic EP93XX processors + * Copyright (c) 2006 Tower Technologies + * + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/platform_device.h> +#include <asm/hardware.h> + +#define EP93XX_RTC_REG(x) (EP93XX_RTC_BASE + (x)) +#define EP93XX_RTC_DATA EP93XX_RTC_REG(0x0000) +#define EP93XX_RTC_LOAD EP93XX_RTC_REG(0x000C) +#define EP93XX_RTC_SWCOMP EP93XX_RTC_REG(0x0108) + +#define DRV_VERSION "0.2" + +static int ep93xx_get_swcomp(struct device *dev, unsigned short *preload, + unsigned short *delete) +{ + unsigned short comp = __raw_readl(EP93XX_RTC_SWCOMP); + + if (preload) + *preload = comp & 0xffff; + + if (delete) + *delete = (comp >> 16) & 0x1f; + + return 0; +} + +static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + unsigned long time = __raw_readl(EP93XX_RTC_DATA); + + rtc_time_to_tm(time, tm); + return 0; +} + +static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + __raw_writel(secs + 1, EP93XX_RTC_LOAD); + return 0; +} + +static int ep93xx_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + int err; + unsigned long secs; + + err = rtc_tm_to_time(tm, &secs); + if (err != 0) + return err; + + return ep93xx_rtc_set_mmss(dev, secs); +} + +static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq) +{ + unsigned short preload, delete; + + ep93xx_get_swcomp(dev, &preload, &delete); + + seq_printf(seq, "24hr\t\t: yes\n"); + seq_printf(seq, "preload\t\t: %d\n", preload); + seq_printf(seq, "delete\t\t: %d\n", delete); + + return 0; +} + +static struct rtc_class_ops ep93xx_rtc_ops = { + .read_time = ep93xx_rtc_read_time, + .set_time = ep93xx_rtc_set_time, + .set_mmss = ep93xx_rtc_set_mmss, + .proc = ep93xx_rtc_proc, +}; + +static ssize_t ep93xx_sysfs_show_comp_preload(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned short preload; + + ep93xx_get_swcomp(dev, &preload, NULL); + + return sprintf(buf, "%d\n", preload); +} +static DEVICE_ATTR(comp_preload, S_IRUGO, ep93xx_sysfs_show_comp_preload, NULL); + +static ssize_t ep93xx_sysfs_show_comp_delete(struct device *dev, + struct device_attribute *attr, char *buf) +{ + unsigned short delete; + + ep93xx_get_swcomp(dev, NULL, &delete); + + return sprintf(buf, "%d\n", delete); +} +static DEVICE_ATTR(comp_delete, S_IRUGO, ep93xx_sysfs_show_comp_delete, NULL); + + +static int __devinit ep93xx_rtc_probe(struct platform_device *dev) +{ + struct rtc_device *rtc = rtc_device_register("ep93xx", + &dev->dev, &ep93xx_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + dev_err(&dev->dev, "unable to register\n"); + return PTR_ERR(rtc); + } + + platform_set_drvdata(dev, rtc); + + device_create_file(&dev->dev, &dev_attr_comp_preload); + device_create_file(&dev->dev, &dev_attr_comp_delete); + + return 0; +} + +static int __devexit ep93xx_rtc_remove(struct platform_device *dev) +{ + struct rtc_device *rtc = platform_get_drvdata(dev); + + if (rtc) + rtc_device_unregister(rtc); + + platform_set_drvdata(dev, NULL); + + return 0; +} + +static struct platform_driver ep93xx_rtc_platform_driver = { + .driver = { + .name = "ep93xx-rtc", + .owner = THIS_MODULE, + }, + .probe = ep93xx_rtc_probe, + .remove = __devexit_p(ep93xx_rtc_remove), +}; + +static int __init ep93xx_rtc_init(void) +{ + return platform_driver_register(&ep93xx_rtc_platform_driver); +} + +static void __exit ep93xx_rtc_exit(void) +{ + platform_driver_unregister(&ep93xx_rtc_platform_driver); +} + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("EP93XX RTC driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +module_init(ep93xx_rtc_init); +module_exit(ep93xx_rtc_exit); diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c new file mode 100644 index 00000000000..cfedc1d28ee --- /dev/null +++ b/drivers/rtc/rtc-lib.c @@ -0,0 +1,101 @@ +/* + * rtc and date/time utility functions + * + * Copyright (C) 2005-06 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * based on arch/arm/common/rtctime.c and other bits + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/rtc.h> + +static const unsigned char rtc_days_in_month[] = { + 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 +}; + +#define LEAPS_THRU_END_OF(y) ((y)/4 - (y)/100 + (y)/400) +#define LEAP_YEAR(year) ((!(year % 4) && (year % 100)) || !(year % 400)) + +int rtc_month_days(unsigned int month, unsigned int year) +{ + return rtc_days_in_month[month] + (LEAP_YEAR(year) && month == 1); +} +EXPORT_SYMBOL(rtc_month_days); + +/* + * Convert seconds since 01-01-1970 00:00:00 to Gregorian date. + */ +void rtc_time_to_tm(unsigned long time, struct rtc_time *tm) +{ + register int days, month, year; + + days = time / 86400; + time -= days * 86400; + + /* day of the week, 1970-01-01 was a Thursday */ + tm->tm_wday = (days + 4) % 7; + + year = 1970 + days / 365; + days -= (year - 1970) * 365 + + LEAPS_THRU_END_OF(year - 1) + - LEAPS_THRU_END_OF(1970 - 1); + if (days < 0) { + year -= 1; + days += 365 + LEAP_YEAR(year); + } + tm->tm_year = year - 1900; + tm->tm_yday = days + 1; + + for (month = 0; month < 11; month++) { + int newdays; + + newdays = days - rtc_month_days(month, year); + if (newdays < 0) + break; + days = newdays; + } + tm->tm_mon = month; + tm->tm_mday = days + 1; + + tm->tm_hour = time / 3600; + time -= tm->tm_hour * 3600; + tm->tm_min = time / 60; + tm->tm_sec = time - tm->tm_min * 60; +} +EXPORT_SYMBOL(rtc_time_to_tm); + +/* + * Does the rtc_time represent a valid date/time? + */ +int rtc_valid_tm(struct rtc_time *tm) +{ + if (tm->tm_year < 70 + || tm->tm_mon >= 12 + || tm->tm_mday < 1 + || tm->tm_mday > rtc_month_days(tm->tm_mon, tm->tm_year + 1900) + || tm->tm_hour >= 24 + || tm->tm_min >= 60 + || tm->tm_sec >= 60) + return -EINVAL; + + return 0; +} +EXPORT_SYMBOL(rtc_valid_tm); + +/* + * Convert Gregorian date to seconds since 01-01-1970 00:00:00. + */ +int rtc_tm_to_time(struct rtc_time *tm, unsigned long *time) +{ + *time = mktime(tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + return 0; +} +EXPORT_SYMBOL(rtc_tm_to_time); + +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c new file mode 100644 index 00000000000..db445c872b1 --- /dev/null +++ b/drivers/rtc/rtc-m48t86.c @@ -0,0 +1,209 @@ +/* + * ST M48T86 / Dallas DS12887 RTC driver + * Copyright (c) 2006 Tower Technologies + * + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This drivers only supports the clock running in BCD and 24H mode. + * If it will be ever adapted to binary and 12H mode, care must be taken + * to not introduce bugs. + */ + +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/platform_device.h> +#include <linux/m48t86.h> +#include <linux/bcd.h> + +#define M48T86_REG_SEC 0x00 +#define M48T86_REG_SECALRM 0x01 +#define M48T86_REG_MIN 0x02 +#define M48T86_REG_MINALRM 0x03 +#define M48T86_REG_HOUR 0x04 +#define M48T86_REG_HOURALRM 0x05 +#define M48T86_REG_DOW 0x06 /* 1 = sunday */ +#define M48T86_REG_DOM 0x07 +#define M48T86_REG_MONTH 0x08 /* 1 - 12 */ +#define M48T86_REG_YEAR 0x09 /* 0 - 99 */ +#define M48T86_REG_A 0x0A +#define M48T86_REG_B 0x0B +#define M48T86_REG_C 0x0C +#define M48T86_REG_D 0x0D + +#define M48T86_REG_B_H24 (1 << 1) +#define M48T86_REG_B_DM (1 << 2) +#define M48T86_REG_B_SET (1 << 7) +#define M48T86_REG_D_VRT (1 << 7) + +#define DRV_VERSION "0.1" + + +static int m48t86_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + unsigned char reg; + struct platform_device *pdev = to_platform_device(dev); + struct m48t86_ops *ops = pdev->dev.platform_data; + + reg = ops->readb(M48T86_REG_B); + + if (reg & M48T86_REG_B_DM) { + /* data (binary) mode */ + tm->tm_sec = ops->readb(M48T86_REG_SEC); + tm->tm_min = ops->readb(M48T86_REG_MIN); + tm->tm_hour = ops->readb(M48T86_REG_HOUR) & 0x3F; + tm->tm_mday = ops->readb(M48T86_REG_DOM); + /* tm_mon is 0-11 */ + tm->tm_mon = ops->readb(M48T86_REG_MONTH) - 1; + tm->tm_year = ops->readb(M48T86_REG_YEAR) + 100; + tm->tm_wday = ops->readb(M48T86_REG_DOW); + } else { + /* bcd mode */ + tm->tm_sec = BCD2BIN(ops->readb(M48T86_REG_SEC)); + tm->tm_min = BCD2BIN(ops->readb(M48T86_REG_MIN)); + tm->tm_hour = BCD2BIN(ops->readb(M48T86_REG_HOUR) & 0x3F); + tm->tm_mday = BCD2BIN(ops->readb(M48T86_REG_DOM)); + /* tm_mon is 0-11 */ + tm->tm_mon = BCD2BIN(ops->readb(M48T86_REG_MONTH)) - 1; + tm->tm_year = BCD2BIN(ops->readb(M48T86_REG_YEAR)) + 100; + tm->tm_wday = BCD2BIN(ops->readb(M48T86_REG_DOW)); + } + + /* correct the hour if the clock is in 12h mode */ + if (!(reg & M48T86_REG_B_H24)) + if (ops->readb(M48T86_REG_HOUR) & 0x80) + tm->tm_hour += 12; + + return 0; +} + +static int m48t86_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + unsigned char reg; + struct platform_device *pdev = to_platform_device(dev); + struct m48t86_ops *ops = pdev->dev.platform_data; + + reg = ops->readb(M48T86_REG_B); + + /* update flag and 24h mode */ + reg |= M48T86_REG_B_SET | M48T86_REG_B_H24; + ops->writeb(reg, M48T86_REG_B); + + if (reg & M48T86_REG_B_DM) { + /* data (binary) mode */ + ops->writeb(tm->tm_sec, M48T86_REG_SEC); + ops->writeb(tm->tm_min, M48T86_REG_MIN); + ops->writeb(tm->tm_hour, M48T86_REG_HOUR); + ops->writeb(tm->tm_mday, M48T86_REG_DOM); + ops->writeb(tm->tm_mon + 1, M48T86_REG_MONTH); + ops->writeb(tm->tm_year % 100, M48T86_REG_YEAR); + ops->writeb(tm->tm_wday, M48T86_REG_DOW); + } else { + /* bcd mode */ + ops->writeb(BIN2BCD(tm->tm_sec), M48T86_REG_SEC); + ops->writeb(BIN2BCD(tm->tm_min), M48T86_REG_MIN); + ops->writeb(BIN2BCD(tm->tm_hour), M48T86_REG_HOUR); + ops->writeb(BIN2BCD(tm->tm_mday), M48T86_REG_DOM); + ops->writeb(BIN2BCD(tm->tm_mon + 1), M48T86_REG_MONTH); + ops->writeb(BIN2BCD(tm->tm_year % 100), M48T86_REG_YEAR); + ops->writeb(BIN2BCD(tm->tm_wday), M48T86_REG_DOW); + } + + /* update ended */ + reg &= ~M48T86_REG_B_SET; + ops->writeb(reg, M48T86_REG_B); + + return 0; +} + +static int m48t86_rtc_proc(struct device *dev, struct seq_file *seq) +{ + unsigned char reg; + struct platform_device *pdev = to_platform_device(dev); + struct m48t86_ops *ops = pdev->dev.platform_data; + + reg = ops->readb(M48T86_REG_B); + + seq_printf(seq, "24hr\t\t: %s\n", + (reg & M48T86_REG_B_H24) ? "yes" : "no"); + + seq_printf(seq, "mode\t\t: %s\n", + (reg & M48T86_REG_B_DM) ? "binary" : "bcd"); + + reg = ops->readb(M48T86_REG_D); + + seq_printf(seq, "battery\t\t: %s\n", + (reg & M48T86_REG_D_VRT) ? "ok" : "exhausted"); + + return 0; +} + +static struct rtc_class_ops m48t86_rtc_ops = { + .read_time = m48t86_rtc_read_time, + .set_time = m48t86_rtc_set_time, + .proc = m48t86_rtc_proc, +}; + +static int __devinit m48t86_rtc_probe(struct platform_device *dev) +{ + unsigned char reg; + struct m48t86_ops *ops = dev->dev.platform_data; + struct rtc_device *rtc = rtc_device_register("m48t86", + &dev->dev, &m48t86_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + dev_err(&dev->dev, "unable to register\n"); + return PTR_ERR(rtc); + } + + platform_set_drvdata(dev, rtc); + + /* read battery status */ + reg = ops->readb(M48T86_REG_D); + dev_info(&dev->dev, "battery %s\n", + (reg & M48T86_REG_D_VRT) ? "ok" : "exhausted"); + + return 0; +} + +static int __devexit m48t86_rtc_remove(struct platform_device *dev) +{ + struct rtc_device *rtc = platform_get_drvdata(dev); + + if (rtc) + rtc_device_unregister(rtc); + + platform_set_drvdata(dev, NULL); + + return 0; +} + +static struct platform_driver m48t86_rtc_platform_driver = { + .driver = { + .name = "rtc-m48t86", + .owner = THIS_MODULE, + }, + .probe = m48t86_rtc_probe, + .remove = __devexit_p(m48t86_rtc_remove), +}; + +static int __init m48t86_rtc_init(void) +{ + return platform_driver_register(&m48t86_rtc_platform_driver); +} + +static void __exit m48t86_rtc_exit(void) +{ + platform_driver_unregister(&m48t86_rtc_platform_driver); +} + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("M48T86 RTC driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +module_init(m48t86_rtc_init); +module_exit(m48t86_rtc_exit); diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c new file mode 100644 index 00000000000..d857d45bdbe --- /dev/null +++ b/drivers/rtc/rtc-pcf8563.c @@ -0,0 +1,353 @@ +/* + * An I2C driver for the Philips PCF8563 RTC + * Copyright 2005-06 Tower Technologies + * + * Author: Alessandro Zummo <a.zummo@towertech.it> + * Maintainers: http://www.nslu2-linux.org/ + * + * based on the other drivers in this same directory. + * + * http://www.semiconductors.philips.com/acrobat/datasheets/PCF8563-04.pdf + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/i2c.h> +#include <linux/bcd.h> +#include <linux/rtc.h> + +#define DRV_VERSION "0.4.2" + +/* Addresses to scan: none + * This chip cannot be reliably autodetected. An empty eeprom + * located at 0x51 will pass the validation routine due to + * the way the registers are implemented. + */ +static unsigned short normal_i2c[] = { I2C_CLIENT_END }; + +/* Module parameters */ +I2C_CLIENT_INSMOD; + +#define PCF8563_REG_ST1 0x00 /* status */ +#define PCF8563_REG_ST2 0x01 + +#define PCF8563_REG_SC 0x02 /* datetime */ +#define PCF8563_REG_MN 0x03 +#define PCF8563_REG_HR 0x04 +#define PCF8563_REG_DM 0x05 +#define PCF8563_REG_DW 0x06 +#define PCF8563_REG_MO 0x07 +#define PCF8563_REG_YR 0x08 + +#define PCF8563_REG_AMN 0x09 /* alarm */ +#define PCF8563_REG_AHR 0x0A +#define PCF8563_REG_ADM 0x0B +#define PCF8563_REG_ADW 0x0C + +#define PCF8563_REG_CLKO 0x0D /* clock out */ +#define PCF8563_REG_TMRC 0x0E /* timer control */ +#define PCF8563_REG_TMR 0x0F /* timer */ + +#define PCF8563_SC_LV 0x80 /* low voltage */ +#define PCF8563_MO_C 0x80 /* century */ + +static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind); +static int pcf8563_detach(struct i2c_client *client); + +/* + * In the routines that deal directly with the pcf8563 hardware, we use + * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch. + */ +static int pcf8563_get_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + unsigned char buf[13] = { PCF8563_REG_ST1 }; + + struct i2c_msg msgs[] = { + { client->addr, 0, 1, buf }, /* setup read ptr */ + { client->addr, I2C_M_RD, 13, buf }, /* read status + date */ + }; + + /* read registers */ + if ((i2c_transfer(client->adapter, msgs, 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + if (buf[PCF8563_REG_SC] & PCF8563_SC_LV) + dev_info(&client->dev, + "low voltage detected, date/time is not reliable.\n"); + + dev_dbg(&client->dev, + "%s: raw data is st1=%02x, st2=%02x, sec=%02x, min=%02x, hr=%02x, " + "mday=%02x, wday=%02x, mon=%02x, year=%02x\n", + __FUNCTION__, + buf[0], buf[1], buf[2], buf[3], + buf[4], buf[5], buf[6], buf[7], + buf[8]); + + + tm->tm_sec = BCD2BIN(buf[PCF8563_REG_SC] & 0x7F); + tm->tm_min = BCD2BIN(buf[PCF8563_REG_MN] & 0x7F); + tm->tm_hour = BCD2BIN(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */ + tm->tm_mday = BCD2BIN(buf[PCF8563_REG_DM] & 0x3F); + tm->tm_wday = buf[PCF8563_REG_DW] & 0x07; + tm->tm_mon = BCD2BIN(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */ + tm->tm_year = BCD2BIN(buf[PCF8563_REG_YR]) + + (buf[PCF8563_REG_MO] & PCF8563_MO_C ? 100 : 0); + + dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + /* the clock can give out invalid datetime, but we cannot return + * -EINVAL otherwise hwclock will refuse to set the time on bootup. + */ + if (rtc_valid_tm(tm) < 0) + dev_err(&client->dev, "retrieved date/time is not valid.\n"); + + return 0; +} + +static int pcf8563_set_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + int i, err; + unsigned char buf[9]; + + dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + /* hours, minutes and seconds */ + buf[PCF8563_REG_SC] = BIN2BCD(tm->tm_sec); + buf[PCF8563_REG_MN] = BIN2BCD(tm->tm_min); + buf[PCF8563_REG_HR] = BIN2BCD(tm->tm_hour); + + buf[PCF8563_REG_DM] = BIN2BCD(tm->tm_mday); + + /* month, 1 - 12 */ + buf[PCF8563_REG_MO] = BIN2BCD(tm->tm_mon + 1); + + /* year and century */ + buf[PCF8563_REG_YR] = BIN2BCD(tm->tm_year % 100); + if (tm->tm_year / 100) + buf[PCF8563_REG_MO] |= PCF8563_MO_C; + + buf[PCF8563_REG_DW] = tm->tm_wday & 0x07; + + /* write register's data */ + for (i = 0; i < 7; i++) { + unsigned char data[2] = { PCF8563_REG_SC + i, + buf[PCF8563_REG_SC + i] }; + + err = i2c_master_send(client, data, sizeof(data)); + if (err != sizeof(data)) { + dev_err(&client->dev, + "%s: err=%d addr=%02x, data=%02x\n", + __FUNCTION__, err, data[0], data[1]); + return -EIO; + } + }; + + return 0; +} + +struct pcf8563_limit +{ + unsigned char reg; + unsigned char mask; + unsigned char min; + unsigned char max; +}; + +static int pcf8563_validate_client(struct i2c_client *client) +{ + int i; + + static const struct pcf8563_limit pattern[] = { + /* register, mask, min, max */ + { PCF8563_REG_SC, 0x7F, 0, 59 }, + { PCF8563_REG_MN, 0x7F, 0, 59 }, + { PCF8563_REG_HR, 0x3F, 0, 23 }, + { PCF8563_REG_DM, 0x3F, 0, 31 }, + { PCF8563_REG_MO, 0x1F, 0, 12 }, + }; + + /* check limits (only registers with bcd values) */ + for (i = 0; i < ARRAY_SIZE(pattern); i++) { + int xfer; + unsigned char value; + unsigned char buf = pattern[i].reg; + + struct i2c_msg msgs[] = { + { client->addr, 0, 1, &buf }, + { client->addr, I2C_M_RD, 1, &buf }, + }; + + xfer = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); + + if (xfer != ARRAY_SIZE(msgs)) { + dev_err(&client->adapter->dev, + "%s: could not read register 0x%02X\n", + __FUNCTION__, pattern[i].reg); + + return -EIO; + } + + value = BCD2BIN(buf & pattern[i].mask); + + if (value > pattern[i].max || + value < pattern[i].min) { + dev_dbg(&client->adapter->dev, + "%s: pattern=%d, reg=%x, mask=0x%02x, min=%d, " + "max=%d, value=%d, raw=0x%02X\n", + __FUNCTION__, i, pattern[i].reg, pattern[i].mask, + pattern[i].min, pattern[i].max, + value, buf); + + return -ENODEV; + } + } + + return 0; +} + +static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + return pcf8563_get_datetime(to_i2c_client(dev), tm); +} + +static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + return pcf8563_set_datetime(to_i2c_client(dev), tm); +} + +static int pcf8563_rtc_proc(struct device *dev, struct seq_file *seq) +{ + seq_printf(seq, "24hr\t\t: yes\n"); + return 0; +} + +static struct rtc_class_ops pcf8563_rtc_ops = { + .proc = pcf8563_rtc_proc, + .read_time = pcf8563_rtc_read_time, + .set_time = pcf8563_rtc_set_time, +}; + +static int pcf8563_attach(struct i2c_adapter *adapter) +{ + return i2c_probe(adapter, &addr_data, pcf8563_probe); +} + +static struct i2c_driver pcf8563_driver = { + .driver = { + .name = "pcf8563", + }, + .id = I2C_DRIVERID_PCF8563, + .attach_adapter = &pcf8563_attach, + .detach_client = &pcf8563_detach, +}; + +static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind) +{ + struct i2c_client *client; + struct rtc_device *rtc; + + int err = 0; + + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + + if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { + err = -ENODEV; + goto exit; + } + + if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { + err = -ENOMEM; + goto exit; + } + + client->addr = address; + client->driver = &pcf8563_driver; + client->adapter = adapter; + + strlcpy(client->name, pcf8563_driver.driver.name, I2C_NAME_SIZE); + + /* Verify the chip is really an PCF8563 */ + if (kind < 0) { + if (pcf8563_validate_client(client) < 0) { + err = -ENODEV; + goto exit_kfree; + } + } + + /* Inform the i2c layer */ + if ((err = i2c_attach_client(client))) + goto exit_kfree; + + dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); + + rtc = rtc_device_register(pcf8563_driver.driver.name, &client->dev, + &pcf8563_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + err = PTR_ERR(rtc); + dev_err(&client->dev, + "unable to register the class device\n"); + goto exit_detach; + } + + i2c_set_clientdata(client, rtc); + + return 0; + +exit_detach: + i2c_detach_client(client); + +exit_kfree: + kfree(client); + +exit: + return err; +} + +static int pcf8563_detach(struct i2c_client *client) +{ + int err; + struct rtc_device *rtc = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s\n", __FUNCTION__); + + if (rtc) + rtc_device_unregister(rtc); + + if ((err = i2c_detach_client(client))) + return err; + + kfree(client); + + return 0; +} + +static int __init pcf8563_init(void) +{ + return i2c_add_driver(&pcf8563_driver); +} + +static void __exit pcf8563_exit(void) +{ + i2c_del_driver(&pcf8563_driver); +} + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("Philips PCF8563/Epson RTC8564 RTC driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +module_init(pcf8563_init); +module_exit(pcf8563_exit); diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c new file mode 100644 index 00000000000..90b8a97a091 --- /dev/null +++ b/drivers/rtc/rtc-proc.c @@ -0,0 +1,162 @@ +/* + * RTC subsystem, proc interface + * + * Copyright (C) 2005-06 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * based on arch/arm/common/rtctime.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> + +static struct class_device *rtc_dev = NULL; +static DEFINE_MUTEX(rtc_lock); + +static int rtc_proc_show(struct seq_file *seq, void *offset) +{ + int err; + struct class_device *class_dev = seq->private; + struct rtc_class_ops *ops = to_rtc_device(class_dev)->ops; + struct rtc_wkalrm alrm; + struct rtc_time tm; + + err = rtc_read_time(class_dev, &tm); + if (err == 0) { + seq_printf(seq, + "rtc_time\t: %02d:%02d:%02d\n" + "rtc_date\t: %04d-%02d-%02d\n", + tm.tm_hour, tm.tm_min, tm.tm_sec, + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); + } + + err = rtc_read_alarm(class_dev, &alrm); + if (err == 0) { + seq_printf(seq, "alrm_time\t: "); + if ((unsigned int)alrm.time.tm_hour <= 24) + seq_printf(seq, "%02d:", alrm.time.tm_hour); + else + seq_printf(seq, "**:"); + if ((unsigned int)alrm.time.tm_min <= 59) + seq_printf(seq, "%02d:", alrm.time.tm_min); + else + seq_printf(seq, "**:"); + if ((unsigned int)alrm.time.tm_sec <= 59) + seq_printf(seq, "%02d\n", alrm.time.tm_sec); + else + seq_printf(seq, "**\n"); + + seq_printf(seq, "alrm_date\t: "); + if ((unsigned int)alrm.time.tm_year <= 200) + seq_printf(seq, "%04d-", alrm.time.tm_year + 1900); + else + seq_printf(seq, "****-"); + if ((unsigned int)alrm.time.tm_mon <= 11) + seq_printf(seq, "%02d-", alrm.time.tm_mon + 1); + else + seq_printf(seq, "**-"); + if ((unsigned int)alrm.time.tm_mday <= 31) + seq_printf(seq, "%02d\n", alrm.time.tm_mday); + else + seq_printf(seq, "**\n"); + seq_printf(seq, "alrm_wakeup\t: %s\n", + alrm.enabled ? "yes" : "no"); + seq_printf(seq, "alrm_pending\t: %s\n", + alrm.pending ? "yes" : "no"); + } + + if (ops->proc) + ops->proc(class_dev->dev, seq); + + return 0; +} + +static int rtc_proc_open(struct inode *inode, struct file *file) +{ + struct class_device *class_dev = PDE(inode)->data; + + if (!try_module_get(THIS_MODULE)) + return -ENODEV; + + return single_open(file, rtc_proc_show, class_dev); +} + +static int rtc_proc_release(struct inode *inode, struct file *file) +{ + int res = single_release(inode, file); + module_put(THIS_MODULE); + return res; +} + +static struct file_operations rtc_proc_fops = { + .open = rtc_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = rtc_proc_release, +}; + +static int rtc_proc_add_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + mutex_lock(&rtc_lock); + if (rtc_dev == NULL) { + struct proc_dir_entry *ent; + + rtc_dev = class_dev; + + ent = create_proc_entry("driver/rtc", 0, NULL); + if (ent) { + struct rtc_device *rtc = to_rtc_device(class_dev); + + ent->proc_fops = &rtc_proc_fops; + ent->owner = rtc->owner; + ent->data = class_dev; + + dev_info(class_dev->dev, "rtc intf: proc\n"); + } + else + rtc_dev = NULL; + } + mutex_unlock(&rtc_lock); + + return 0; +} + +static void rtc_proc_remove_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + mutex_lock(&rtc_lock); + if (rtc_dev == class_dev) { + remove_proc_entry("driver/rtc", NULL); + rtc_dev = NULL; + } + mutex_unlock(&rtc_lock); +} + +static struct class_interface rtc_proc_interface = { + .add = &rtc_proc_add_device, + .remove = &rtc_proc_remove_device, +}; + +static int __init rtc_proc_init(void) +{ + return rtc_interface_register(&rtc_proc_interface); +} + +static void __exit rtc_proc_exit(void) +{ + class_interface_unregister(&rtc_proc_interface); +} + +module_init(rtc_proc_init); +module_exit(rtc_proc_exit); + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("RTC class proc interface"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c new file mode 100644 index 00000000000..396c8681f66 --- /dev/null +++ b/drivers/rtc/rtc-rs5c372.c @@ -0,0 +1,294 @@ +/* + * An I2C driver for the Ricoh RS5C372 RTC + * + * Copyright (C) 2005 Pavel Mironchik <pmironchik@optifacio.net> + * Copyright (C) 2006 Tower Technologies + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/i2c.h> +#include <linux/rtc.h> +#include <linux/bcd.h> + +#define DRV_VERSION "0.2" + +/* Addresses to scan */ +static unsigned short normal_i2c[] = { /* 0x32,*/ I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD; + +#define RS5C372_REG_SECS 0 +#define RS5C372_REG_MINS 1 +#define RS5C372_REG_HOURS 2 +#define RS5C372_REG_WDAY 3 +#define RS5C372_REG_DAY 4 +#define RS5C372_REG_MONTH 5 +#define RS5C372_REG_YEAR 6 +#define RS5C372_REG_TRIM 7 + +#define RS5C372_TRIM_XSL 0x80 +#define RS5C372_TRIM_MASK 0x7F + +#define RS5C372_REG_BASE 0 + +static int rs5c372_attach(struct i2c_adapter *adapter); +static int rs5c372_detach(struct i2c_client *client); +static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind); + +static struct i2c_driver rs5c372_driver = { + .driver = { + .name = "rs5c372", + }, + .attach_adapter = &rs5c372_attach, + .detach_client = &rs5c372_detach, +}; + +static int rs5c372_get_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + unsigned char buf[7] = { RS5C372_REG_BASE }; + + /* this implements the 1st reading method, according + * to the datasheet. buf[0] is initialized with + * address ptr and transmission format register. + */ + struct i2c_msg msgs[] = { + { client->addr, 0, 1, buf }, + { client->addr, I2C_M_RD, 7, buf }, + }; + + if ((i2c_transfer(client->adapter, msgs, 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + tm->tm_sec = BCD2BIN(buf[RS5C372_REG_SECS] & 0x7f); + tm->tm_min = BCD2BIN(buf[RS5C372_REG_MINS] & 0x7f); + tm->tm_hour = BCD2BIN(buf[RS5C372_REG_HOURS] & 0x3f); + tm->tm_wday = BCD2BIN(buf[RS5C372_REG_WDAY] & 0x07); + tm->tm_mday = BCD2BIN(buf[RS5C372_REG_DAY] & 0x3f); + + /* tm->tm_mon is zero-based */ + tm->tm_mon = BCD2BIN(buf[RS5C372_REG_MONTH] & 0x1f) - 1; + + /* year is 1900 + tm->tm_year */ + tm->tm_year = BCD2BIN(buf[RS5C372_REG_YEAR]) + 100; + + dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + return 0; +} + +static int rs5c372_set_datetime(struct i2c_client *client, struct rtc_time *tm) +{ + unsigned char buf[8] = { RS5C372_REG_BASE }; + + dev_dbg(&client->dev, + "%s: secs=%d, mins=%d, hours=%d ", + "mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, tm->tm_sec, tm->tm_min, tm->tm_hour, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + + buf[1] = BIN2BCD(tm->tm_sec); + buf[2] = BIN2BCD(tm->tm_min); + buf[3] = BIN2BCD(tm->tm_hour); + buf[4] = BIN2BCD(tm->tm_wday); + buf[5] = BIN2BCD(tm->tm_mday); + buf[6] = BIN2BCD(tm->tm_mon + 1); + buf[7] = BIN2BCD(tm->tm_year - 100); + + if ((i2c_master_send(client, buf, 8)) != 8) { + dev_err(&client->dev, "%s: write error\n", __FUNCTION__); + return -EIO; + } + + return 0; +} + +static int rs5c372_get_trim(struct i2c_client *client, int *osc, int *trim) +{ + unsigned char buf = RS5C372_REG_TRIM; + + struct i2c_msg msgs[] = { + { client->addr, 0, 1, &buf }, + { client->addr, I2C_M_RD, 1, &buf }, + }; + + if ((i2c_transfer(client->adapter, msgs, 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + dev_dbg(&client->dev, "%s: raw trim=%x\n", __FUNCTION__, trim); + + if (osc) + *osc = (buf & RS5C372_TRIM_XSL) ? 32000 : 32768; + + if (trim) + *trim = buf & RS5C372_TRIM_MASK; + + return 0; +} + +static int rs5c372_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + return rs5c372_get_datetime(to_i2c_client(dev), tm); +} + +static int rs5c372_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + return rs5c372_set_datetime(to_i2c_client(dev), tm); +} + +static int rs5c372_rtc_proc(struct device *dev, struct seq_file *seq) +{ + int err, osc, trim; + + seq_printf(seq, "24hr\t\t: yes\n"); + + if ((err = rs5c372_get_trim(to_i2c_client(dev), &osc, &trim)) == 0) { + seq_printf(seq, "%d.%03d KHz\n", osc / 1000, osc % 1000); + seq_printf(seq, "trim\t: %d\n", trim); + } + + return 0; +} + +static struct rtc_class_ops rs5c372_rtc_ops = { + .proc = rs5c372_rtc_proc, + .read_time = rs5c372_rtc_read_time, + .set_time = rs5c372_rtc_set_time, +}; + +static ssize_t rs5c372_sysfs_show_trim(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int trim; + + if (rs5c372_get_trim(to_i2c_client(dev), NULL, &trim) == 0) + return sprintf(buf, "0x%2x\n", trim); + + return 0; +} +static DEVICE_ATTR(trim, S_IRUGO, rs5c372_sysfs_show_trim, NULL); + +static ssize_t rs5c372_sysfs_show_osc(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int osc; + + if (rs5c372_get_trim(to_i2c_client(dev), &osc, NULL) == 0) + return sprintf(buf, "%d.%03d KHz\n", osc / 1000, osc % 1000); + + return 0; +} +static DEVICE_ATTR(osc, S_IRUGO, rs5c372_sysfs_show_osc, NULL); + +static int rs5c372_attach(struct i2c_adapter *adapter) +{ + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + return i2c_probe(adapter, &addr_data, rs5c372_probe); +} + +static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind) +{ + int err = 0; + struct i2c_client *client; + struct rtc_device *rtc; + + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + + if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) { + err = -ENODEV; + goto exit; + } + + if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { + err = -ENOMEM; + goto exit; + } + + /* I2C client */ + client->addr = address; + client->driver = &rs5c372_driver; + client->adapter = adapter; + + strlcpy(client->name, rs5c372_driver.driver.name, I2C_NAME_SIZE); + + /* Inform the i2c layer */ + if ((err = i2c_attach_client(client))) + goto exit_kfree; + + dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); + + rtc = rtc_device_register(rs5c372_driver.driver.name, &client->dev, + &rs5c372_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + err = PTR_ERR(rtc); + dev_err(&client->dev, + "unable to register the class device\n"); + goto exit_detach; + } + + i2c_set_clientdata(client, rtc); + + device_create_file(&client->dev, &dev_attr_trim); + device_create_file(&client->dev, &dev_attr_osc); + + return 0; + +exit_detach: + i2c_detach_client(client); + +exit_kfree: + kfree(client); + +exit: + return err; +} + +static int rs5c372_detach(struct i2c_client *client) +{ + int err; + struct rtc_device *rtc = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s\n", __FUNCTION__); + + if (rtc) + rtc_device_unregister(rtc); + + if ((err = i2c_detach_client(client))) + return err; + + kfree(client); + + return 0; +} + +static __init int rs5c372_init(void) +{ + return i2c_add_driver(&rs5c372_driver); +} + +static __exit void rs5c372_exit(void) +{ + i2c_del_driver(&rs5c372_driver); +} + +module_init(rs5c372_init); +module_exit(rs5c372_exit); + +MODULE_AUTHOR( + "Pavel Mironchik <pmironchik@optifacio.net>, " + "Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("Ricoh RS5C372 RTC driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c new file mode 100644 index 00000000000..83b2bb480a1 --- /dev/null +++ b/drivers/rtc/rtc-sa1100.c @@ -0,0 +1,388 @@ +/* + * Real Time Clock interface for StrongARM SA1x00 and XScale PXA2xx + * + * Copyright (c) 2000 Nils Faerber + * + * Based on rtc.c by Paul Gortmaker + * + * Original Driver by Nils Faerber <nils@kernelconcepts.de> + * + * Modifications from: + * CIH <cih@coventive.com> + * Nicolas Pitre <nico@cam.org> + * Andrew Christian <andrew.christian@hp.com> + * + * Converted to the RTC subsystem and Driver Model + * by Richard Purdie <rpurdie@rpsys.net> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include <linux/platform_device.h> +#include <linux/module.h> +#include <linux/rtc.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/interrupt.h> +#include <linux/string.h> +#include <linux/pm.h> + +#include <asm/bitops.h> +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/rtc.h> + +#ifdef CONFIG_ARCH_PXA +#include <asm/arch/pxa-regs.h> +#endif + +#define TIMER_FREQ CLOCK_TICK_RATE +#define RTC_DEF_DIVIDER 32768 - 1 +#define RTC_DEF_TRIM 0 + +static unsigned long rtc_freq = 1024; +static struct rtc_time rtc_alarm; +static spinlock_t sa1100_rtc_lock = SPIN_LOCK_UNLOCKED; + +static int rtc_update_alarm(struct rtc_time *alrm) +{ + struct rtc_time alarm_tm, now_tm; + unsigned long now, time; + int ret; + + do { + now = RCNR; + rtc_time_to_tm(now, &now_tm); + rtc_next_alarm_time(&alarm_tm, &now_tm, alrm); + ret = rtc_tm_to_time(&alarm_tm, &time); + if (ret != 0) + break; + + RTSR = RTSR & (RTSR_HZE|RTSR_ALE|RTSR_AL); + RTAR = time; + } while (now != RCNR); + + return ret; +} + +static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id, + struct pt_regs *regs) +{ + struct platform_device *pdev = to_platform_device(dev_id); + struct rtc_device *rtc = platform_get_drvdata(pdev); + unsigned int rtsr; + unsigned long events = 0; + + spin_lock(&sa1100_rtc_lock); + + rtsr = RTSR; + /* clear interrupt sources */ + RTSR = 0; + RTSR = (RTSR_AL | RTSR_HZ) & (rtsr >> 2); + + /* clear alarm interrupt if it has occurred */ + if (rtsr & RTSR_AL) + rtsr &= ~RTSR_ALE; + RTSR = rtsr & (RTSR_ALE | RTSR_HZE); + + /* update irq data & counter */ + if (rtsr & RTSR_AL) + events |= RTC_AF | RTC_IRQF; + if (rtsr & RTSR_HZ) + events |= RTC_UF | RTC_IRQF; + + rtc_update_irq(&rtc->class_dev, 1, events); + + if (rtsr & RTSR_AL && rtc_periodic_alarm(&rtc_alarm)) + rtc_update_alarm(&rtc_alarm); + + spin_unlock(&sa1100_rtc_lock); + + return IRQ_HANDLED; +} + +static int rtc_timer1_count; + +static irqreturn_t timer1_interrupt(int irq, void *dev_id, + struct pt_regs *regs) +{ + struct platform_device *pdev = to_platform_device(dev_id); + struct rtc_device *rtc = platform_get_drvdata(pdev); + + /* + * If we match for the first time, rtc_timer1_count will be 1. + * Otherwise, we wrapped around (very unlikely but + * still possible) so compute the amount of missed periods. + * The match reg is updated only when the data is actually retrieved + * to avoid unnecessary interrupts. + */ + OSSR = OSSR_M1; /* clear match on timer1 */ + + rtc_update_irq(&rtc->class_dev, rtc_timer1_count, RTC_PF | RTC_IRQF); + + if (rtc_timer1_count == 1) + rtc_timer1_count = (rtc_freq * ((1<<30)/(TIMER_FREQ>>2))); + + return IRQ_HANDLED; +} + +static int sa1100_rtc_read_callback(struct device *dev, int data) +{ + if (data & RTC_PF) { + /* interpolate missed periods and set match for the next */ + unsigned long period = TIMER_FREQ/rtc_freq; + unsigned long oscr = OSCR; + unsigned long osmr1 = OSMR1; + unsigned long missed = (oscr - osmr1)/period; + data += missed << 8; + OSSR = OSSR_M1; /* clear match on timer 1 */ + OSMR1 = osmr1 + (missed + 1)*period; + /* Ensure we didn't miss another match in the mean time. + * Here we compare (match - OSCR) 8 instead of 0 -- + * see comment in pxa_timer_interrupt() for explanation. + */ + while( (signed long)((osmr1 = OSMR1) - OSCR) <= 8 ) { + data += 0x100; + OSSR = OSSR_M1; /* clear match on timer 1 */ + OSMR1 = osmr1 + period; + } + } + return data; +} + +static int sa1100_rtc_open(struct device *dev) +{ + int ret; + + ret = request_irq(IRQ_RTC1Hz, sa1100_rtc_interrupt, SA_INTERRUPT, + "rtc 1Hz", dev); + if (ret) { + printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTC1Hz); + goto fail_ui; + } + ret = request_irq(IRQ_RTCAlrm, sa1100_rtc_interrupt, SA_INTERRUPT, + "rtc Alrm", dev); + if (ret) { + printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_RTCAlrm); + goto fail_ai; + } + ret = request_irq(IRQ_OST1, timer1_interrupt, SA_INTERRUPT, + "rtc timer", dev); + if (ret) { + printk(KERN_ERR "rtc: IRQ%d already in use.\n", IRQ_OST1); + goto fail_pi; + } + return 0; + + fail_pi: + free_irq(IRQ_RTCAlrm, NULL); + fail_ai: + free_irq(IRQ_RTC1Hz, NULL); + fail_ui: + return ret; +} + +static void sa1100_rtc_release(struct device *dev) +{ + spin_lock_irq(&sa1100_rtc_lock); + RTSR = 0; + OIER &= ~OIER_E1; + OSSR = OSSR_M1; + spin_unlock_irq(&sa1100_rtc_lock); + + free_irq(IRQ_OST1, dev); + free_irq(IRQ_RTCAlrm, dev); + free_irq(IRQ_RTC1Hz, dev); +} + + +static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd, + unsigned long arg) +{ + switch(cmd) { + case RTC_AIE_OFF: + spin_lock_irq(&sa1100_rtc_lock); + RTSR &= ~RTSR_ALE; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_AIE_ON: + spin_lock_irq(&sa1100_rtc_lock); + RTSR |= RTSR_ALE; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_UIE_OFF: + spin_lock_irq(&sa1100_rtc_lock); + RTSR &= ~RTSR_HZE; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_UIE_ON: + spin_lock_irq(&sa1100_rtc_lock); + RTSR |= RTSR_HZE; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_PIE_OFF: + spin_lock_irq(&sa1100_rtc_lock); + OIER &= ~OIER_E1; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_PIE_ON: + if ((rtc_freq > 64) && !capable(CAP_SYS_RESOURCE)) + return -EACCES; + spin_lock_irq(&sa1100_rtc_lock); + OSMR1 = TIMER_FREQ/rtc_freq + OSCR; + OIER |= OIER_E1; + rtc_timer1_count = 1; + spin_unlock_irq(&sa1100_rtc_lock); + return 0; + case RTC_IRQP_READ: + return put_user(rtc_freq, (unsigned long *)arg); + case RTC_IRQP_SET: + if (arg < 1 || arg > TIMER_FREQ) + return -EINVAL; + if ((arg > 64) && (!capable(CAP_SYS_RESOURCE))) + return -EACCES; + rtc_freq = arg; + return 0; + } + return -EINVAL; +} + +static int sa1100_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + rtc_time_to_tm(RCNR, tm); + return 0; +} + +static int sa1100_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + unsigned long time; + int ret; + + ret = rtc_tm_to_time(tm, &time); + if (ret == 0) + RCNR = time; + return ret; +} + +static int sa1100_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + memcpy(&alrm->time, &rtc_alarm, sizeof(struct rtc_time)); + alrm->pending = RTSR & RTSR_AL ? 1 : 0; + return 0; +} + +static int sa1100_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + int ret; + + spin_lock_irq(&sa1100_rtc_lock); + ret = rtc_update_alarm(&alrm->time); + if (ret == 0) { + memcpy(&rtc_alarm, &alrm->time, sizeof(struct rtc_time)); + + if (alrm->enabled) + enable_irq_wake(IRQ_RTCAlrm); + else + disable_irq_wake(IRQ_RTCAlrm); + } + spin_unlock_irq(&sa1100_rtc_lock); + + return ret; +} + +static int sa1100_rtc_proc(struct device *dev, struct seq_file *seq) +{ + seq_printf(seq, "trim/divider\t: 0x%08x\n", RTTR); + seq_printf(seq, "alarm_IRQ\t: %s\n", + (RTSR & RTSR_ALE) ? "yes" : "no" ); + seq_printf(seq, "update_IRQ\t: %s\n", + (RTSR & RTSR_HZE) ? "yes" : "no"); + seq_printf(seq, "periodic_IRQ\t: %s\n", + (OIER & OIER_E1) ? "yes" : "no"); + seq_printf(seq, "periodic_freq\t: %ld\n", rtc_freq); + + return 0; +} + +static struct rtc_class_ops sa1100_rtc_ops = { + .open = sa1100_rtc_open, + .read_callback = sa1100_rtc_read_callback, + .release = sa1100_rtc_release, + .ioctl = sa1100_rtc_ioctl, + .read_time = sa1100_rtc_read_time, + .set_time = sa1100_rtc_set_time, + .read_alarm = sa1100_rtc_read_alarm, + .set_alarm = sa1100_rtc_set_alarm, + .proc = sa1100_rtc_proc, +}; + +static int sa1100_rtc_probe(struct platform_device *pdev) +{ + struct rtc_device *rtc; + + /* + * According to the manual we should be able to let RTTR be zero + * and then a default diviser for a 32.768KHz clock is used. + * Apparently this doesn't work, at least for my SA1110 rev 5. + * If the clock divider is uninitialized then reset it to the + * default value to get the 1Hz clock. + */ + if (RTTR == 0) { + RTTR = RTC_DEF_DIVIDER + (RTC_DEF_TRIM << 16); + printk(KERN_WARNING "rtc: warning: initializing default clock divider/trim value\n"); + /* The current RTC value probably doesn't make sense either */ + RCNR = 0; + } + + rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops, + THIS_MODULE); + + if (IS_ERR(rtc)) { + dev_err(&pdev->dev, "Unable to register the RTC device\n"); + return PTR_ERR(rtc); + } + + platform_set_drvdata(pdev, rtc); + + dev_info(&pdev->dev, "SA11xx/PXA2xx RTC Registered\n"); + + return 0; +} + +static int sa1100_rtc_remove(struct platform_device *pdev) +{ + struct rtc_device *rtc = platform_get_drvdata(pdev); + + if (rtc) + rtc_device_unregister(rtc); + + return 0; +} + +static struct platform_driver sa1100_rtc_driver = { + .probe = sa1100_rtc_probe, + .remove = sa1100_rtc_remove, + .driver = { + .name = "sa1100-rtc", + }, +}; + +static int __init sa1100_rtc_init(void) +{ + return platform_driver_register(&sa1100_rtc_driver); +} + +static void __exit sa1100_rtc_exit(void) +{ + platform_driver_unregister(&sa1100_rtc_driver); +} + +module_init(sa1100_rtc_init); +module_exit(sa1100_rtc_exit); + +MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); +MODULE_DESCRIPTION("SA11x0/PXA2xx Realtime Clock Driver (RTC)"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c new file mode 100644 index 00000000000..7c1f3d2e53c --- /dev/null +++ b/drivers/rtc/rtc-sysfs.c @@ -0,0 +1,124 @@ +/* + * RTC subsystem, sysfs interface + * + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/rtc.h> + +/* device attributes */ + +static ssize_t rtc_sysfs_show_name(struct class_device *dev, char *buf) +{ + return sprintf(buf, "%s\n", to_rtc_device(dev)->name); +} +static CLASS_DEVICE_ATTR(name, S_IRUGO, rtc_sysfs_show_name, NULL); + +static ssize_t rtc_sysfs_show_date(struct class_device *dev, char *buf) +{ + ssize_t retval; + struct rtc_time tm; + + retval = rtc_read_time(dev, &tm); + if (retval == 0) { + retval = sprintf(buf, "%04d-%02d-%02d\n", + tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); + } + + return retval; +} +static CLASS_DEVICE_ATTR(date, S_IRUGO, rtc_sysfs_show_date, NULL); + +static ssize_t rtc_sysfs_show_time(struct class_device *dev, char *buf) +{ + ssize_t retval; + struct rtc_time tm; + + retval = rtc_read_time(dev, &tm); + if (retval == 0) { + retval = sprintf(buf, "%02d:%02d:%02d\n", + tm.tm_hour, tm.tm_min, tm.tm_sec); + } + + return retval; +} +static CLASS_DEVICE_ATTR(time, S_IRUGO, rtc_sysfs_show_time, NULL); + +static ssize_t rtc_sysfs_show_since_epoch(struct class_device *dev, char *buf) +{ + ssize_t retval; + struct rtc_time tm; + + retval = rtc_read_time(dev, &tm); + if (retval == 0) { + unsigned long time; + rtc_tm_to_time(&tm, &time); + retval = sprintf(buf, "%lu\n", time); + } + + return retval; +} +static CLASS_DEVICE_ATTR(since_epoch, S_IRUGO, rtc_sysfs_show_since_epoch, NULL); + +static struct attribute *rtc_attrs[] = { + &class_device_attr_name.attr, + &class_device_attr_date.attr, + &class_device_attr_time.attr, + &class_device_attr_since_epoch.attr, + NULL, +}; + +static struct attribute_group rtc_attr_group = { + .attrs = rtc_attrs, +}; + +static int __devinit rtc_sysfs_add_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + int err; + + dev_info(class_dev->dev, "rtc intf: sysfs\n"); + + err = sysfs_create_group(&class_dev->kobj, &rtc_attr_group); + if (err) + dev_err(class_dev->dev, + "failed to create sysfs attributes\n"); + + return err; +} + +static void rtc_sysfs_remove_device(struct class_device *class_dev, + struct class_interface *class_intf) +{ + sysfs_remove_group(&class_dev->kobj, &rtc_attr_group); +} + +/* interface registration */ + +static struct class_interface rtc_sysfs_interface = { + .add = &rtc_sysfs_add_device, + .remove = &rtc_sysfs_remove_device, +}; + +static int __init rtc_sysfs_init(void) +{ + return rtc_interface_register(&rtc_sysfs_interface); +} + +static void __exit rtc_sysfs_exit(void) +{ + class_interface_unregister(&rtc_sysfs_interface); +} + +module_init(rtc_sysfs_init); +module_exit(rtc_sysfs_exit); + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("RTC class sysfs interface"); +MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c new file mode 100644 index 00000000000..43d10748782 --- /dev/null +++ b/drivers/rtc/rtc-test.c @@ -0,0 +1,204 @@ +/* + * An RTC test device/driver + * Copyright (C) 2005 Tower Technologies + * Author: Alessandro Zummo <a.zummo@towertech.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/err.h> +#include <linux/rtc.h> +#include <linux/platform_device.h> + +static struct platform_device *test0 = NULL, *test1 = NULL; + +static int test_rtc_read_alarm(struct device *dev, + struct rtc_wkalrm *alrm) +{ + return 0; +} + +static int test_rtc_set_alarm(struct device *dev, + struct rtc_wkalrm *alrm) +{ + return 0; +} + +static int test_rtc_read_time(struct device *dev, + struct rtc_time *tm) +{ + rtc_time_to_tm(get_seconds(), tm); + return 0; +} + +static int test_rtc_set_time(struct device *dev, + struct rtc_time *tm) +{ + return 0; +} + +static int test_rtc_set_mmss(struct device *dev, unsigned long secs) +{ + return 0; +} + +static int test_rtc_proc(struct device *dev, struct seq_file *seq) +{ + struct platform_device *plat_dev = to_platform_device(dev); + + seq_printf(seq, "24hr\t\t: yes\n"); + seq_printf(seq, "test\t\t: yes\n"); + seq_printf(seq, "id\t\t: %d\n", plat_dev->id); + + return 0; +} + +static int test_rtc_ioctl(struct device *dev, unsigned int cmd, + unsigned long arg) +{ + /* We do support interrupts, they're generated + * using the sysfs interface. + */ + switch (cmd) { + case RTC_PIE_ON: + case RTC_PIE_OFF: + case RTC_UIE_ON: + case RTC_UIE_OFF: + case RTC_AIE_ON: + case RTC_AIE_OFF: + return 0; + + default: + return -EINVAL; + } +} + +static struct rtc_class_ops test_rtc_ops = { + .proc = test_rtc_proc, + .read_time = test_rtc_read_time, + .set_time = test_rtc_set_time, + .read_alarm = test_rtc_read_alarm, + .set_alarm = test_rtc_set_alarm, + .set_mmss = test_rtc_set_mmss, + .ioctl = test_rtc_ioctl, +}; + +static ssize_t test_irq_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", 42); +} +static ssize_t test_irq_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int retval; + struct platform_device *plat_dev = to_platform_device(dev); + struct rtc_device *rtc = platform_get_drvdata(plat_dev); + + retval = count; + if (strncmp(buf, "tick", 4) == 0) + rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF); + else if (strncmp(buf, "alarm", 5) == 0) + rtc_update_irq(&rtc->class_dev, 1, RTC_AF | RTC_IRQF); + else if (strncmp(buf, "update", 6) == 0) + rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF); + else + retval = -EINVAL; + + return retval; +} +static DEVICE_ATTR(irq, S_IRUGO | S_IWUSR, test_irq_show, test_irq_store); + +static int test_probe(struct platform_device *plat_dev) +{ + int err; + struct rtc_device *rtc = rtc_device_register("test", &plat_dev->dev, + &test_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc)) { + err = PTR_ERR(rtc); + dev_err(&plat_dev->dev, + "unable to register the class device\n"); + return err; + } + device_create_file(&plat_dev->dev, &dev_attr_irq); + + platform_set_drvdata(plat_dev, rtc); + + return 0; +} + +static int __devexit test_remove(struct platform_device *plat_dev) +{ + struct rtc_device *rtc = platform_get_drvdata(plat_dev); + + rtc_device_unregister(rtc); + device_remove_file(&plat_dev->dev, &dev_attr_irq); + + return 0; +} + +static struct platform_driver test_drv = { + .probe = test_probe, + .remove = __devexit_p(test_remove), + .driver = { + .name = "rtc-test", + .owner = THIS_MODULE, + }, +}; + +static int __init test_init(void) +{ + int err; + + if ((err = platform_driver_register(&test_drv))) + return err; + + if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) { + err = -ENOMEM; + goto exit_driver_unregister; + } + + if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) { + err = -ENOMEM; + goto exit_free_test0; + } + + if ((err = platform_device_add(test0))) + goto exit_free_test1; + + if ((err = platform_device_add(test1))) + goto exit_device_unregister; + + return 0; + +exit_device_unregister: + platform_device_unregister(test0); + +exit_free_test1: + platform_device_put(test1); + +exit_free_test0: + platform_device_put(test0); + +exit_driver_unregister: + platform_driver_unregister(&test_drv); + return err; +} + +static void __exit test_exit(void) +{ + platform_device_unregister(test0); + platform_device_unregister(test1); + platform_driver_unregister(&test_drv); +} + +MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("RTC test driver/device"); +MODULE_LICENSE("GPL"); + +module_init(test_init); +module_exit(test_exit); diff --git a/drivers/i2c/chips/x1205.c b/drivers/rtc/rtc-x1205.c index 245fffa92db..621d17afc0d 100644 --- a/drivers/i2c/chips/x1205.c +++ b/drivers/rtc/rtc-x1205.c @@ -1,32 +1,25 @@ /* - * x1205.c - An i2c driver for the Xicor X1205 RTC - * Copyright 2004 Karen Spearel - * Copyright 2005 Alessandro Zummo + * An i2c driver for the Xicor/Intersil X1205 RTC + * Copyright 2004 Karen Spearel + * Copyright 2005 Alessandro Zummo * - * please send all reports to: - * kas11 at tampabay dot rr dot com - * a dot zummo at towertech dot it + * please send all reports to: + * Karen Spearel <kas111 at gmail dot com> + * Alessandro Zummo <a.zummo@towertech.it> * - * based on the other drivers in this same directory. + * based on a lot of other RTC drivers. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> #include <linux/i2c.h> -#include <linux/string.h> #include <linux/bcd.h> #include <linux/rtc.h> -#include <linux/list.h> +#include <linux/delay.h> -#include <linux/x1205.h> - -#define DRV_VERSION "0.9.9" +#define DRV_VERSION "1.0.6" /* Addresses to scan: none. This chip is located at * 0x6f and uses a two bytes register addressing. @@ -40,8 +33,6 @@ static unsigned short normal_i2c[] = { I2C_CLIENT_END }; /* Insmod parameters */ I2C_CLIENT_INSMOD; -I2C_CLIENT_MODULE_PARM(hctosys, - "Set the system time from the hardware clock upon initialization"); /* offsets into CCR area */ @@ -101,107 +92,35 @@ I2C_CLIENT_MODULE_PARM(hctosys, static int x1205_attach(struct i2c_adapter *adapter); static int x1205_detach(struct i2c_client *client); static int x1205_probe(struct i2c_adapter *adapter, int address, int kind); -static int x1205_command(struct i2c_client *client, unsigned int cmd, - void *arg); static struct i2c_driver x1205_driver = { - .driver = { + .driver = { .name = "x1205", }, + .id = I2C_DRIVERID_X1205, .attach_adapter = &x1205_attach, .detach_client = &x1205_detach, }; -struct x1205_data { - struct i2c_client client; - struct list_head list; - unsigned int epoch; -}; - -static const unsigned char days_in_mo[] = - { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; - -static LIST_HEAD(x1205_clients); - -/* Workaround until the I2C subsytem will allow to send - * commands to a specific client. This function will send the command - * to the first client. - */ -int x1205_do_command(unsigned int cmd, void *arg) -{ - struct list_head *walk; - struct list_head *tmp; - struct x1205_data *data; - - list_for_each_safe(walk, tmp, &x1205_clients) { - data = list_entry(walk, struct x1205_data, list); - return x1205_command(&data->client, cmd, arg); - } - - return -ENODEV; -} - -#define is_leap(year) \ - ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) - -/* make sure the rtc_time values are in bounds */ -static int x1205_validate_tm(struct rtc_time *tm) -{ - int year = tm->tm_year + 1900; - - if ((tm->tm_year < 70) || (tm->tm_year > 255)) - return -EINVAL; - - if ((tm->tm_mon > 11) || (tm->tm_mday == 0)) - return -EINVAL; - - if (tm->tm_mday > days_in_mo[tm->tm_mon] - + ((tm->tm_mon == 1) && is_leap(year))) - return -EINVAL; - - if ((tm->tm_hour >= 24) || (tm->tm_min >= 60) || (tm->tm_sec >= 60)) - return -EINVAL; - - return 0; -} - /* * In the routines that deal directly with the x1205 hardware, we use * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch * Epoch is initialized as 2000. Time is set to UTC. */ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, - u8 reg_base) + unsigned char reg_base) { unsigned char dt_addr[2] = { 0, reg_base }; - static unsigned char sr_addr[2] = { 0, X1205_REG_SR }; - unsigned char buf[8], sr; + unsigned char buf[8]; struct i2c_msg msgs[] = { - { client->addr, 0, 2, sr_addr }, /* setup read ptr */ - { client->addr, I2C_M_RD, 1, &sr }, /* read status */ { client->addr, 0, 2, dt_addr }, /* setup read ptr */ { client->addr, I2C_M_RD, 8, buf }, /* read date */ }; - struct x1205_data *data = i2c_get_clientdata(client); - - /* read status register */ - if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { - dev_err(&client->dev, "%s: read error\n", __FUNCTION__); - return -EIO; - } - - /* check for battery failure */ - if (sr & X1205_SR_RTCF) { - dev_warn(&client->dev, - "Clock had a power failure, you must set the date.\n"); - return -EINVAL; - } - /* read date registers */ - if ((i2c_transfer(client->adapter, &msgs[2], 2)) != 2) { + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { dev_err(&client->dev, "%s: read error\n", __FUNCTION__); return -EIO; } @@ -217,9 +136,9 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, tm->tm_min = BCD2BIN(buf[CCR_MIN]); tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */ tm->tm_mday = BCD2BIN(buf[CCR_MDAY]); - tm->tm_mon = BCD2BIN(buf[CCR_MONTH]); - data->epoch = BCD2BIN(buf[CCR_Y2K]) * 100; - tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + data->epoch - 1900; + tm->tm_mon = BCD2BIN(buf[CCR_MONTH]) - 1; /* mon is 0-11 */ + tm->tm_year = BCD2BIN(buf[CCR_YEAR]) + + (BCD2BIN(buf[CCR_Y2K]) * 100) - 1900; tm->tm_wday = buf[CCR_WDAY]; dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, " @@ -231,11 +150,28 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, return 0; } +static int x1205_get_status(struct i2c_client *client, unsigned char *sr) +{ + static unsigned char sr_addr[2] = { 0, X1205_REG_SR }; + + struct i2c_msg msgs[] = { + { client->addr, 0, 2, sr_addr }, /* setup read ptr */ + { client->addr, I2C_M_RD, 1, sr }, /* read status */ + }; + + /* read status register */ + if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { + dev_err(&client->dev, "%s: read error\n", __FUNCTION__); + return -EIO; + } + + return 0; +} + static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, int datetoo, u8 reg_base) { - int i, err, xfer; - + int i, xfer; unsigned char buf[8]; static const unsigned char wel[3] = { 0, X1205_REG_SR, @@ -246,17 +182,10 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, static const unsigned char diswe[3] = { 0, X1205_REG_SR, 0 }; - struct x1205_data *data = i2c_get_clientdata(client); - - /* check if all values in the tm struct are correct */ - if ((err = x1205_validate_tm(tm)) < 0) - return err; - - dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, " - "mday=%d, mon=%d, year=%d, wday=%d\n", + dev_dbg(&client->dev, + "%s: secs=%d, mins=%d, hours=%d\n", __FUNCTION__, - tm->tm_sec, tm->tm_min, tm->tm_hour, - tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + tm->tm_sec, tm->tm_min, tm->tm_hour); buf[CCR_SEC] = BIN2BCD(tm->tm_sec); buf[CCR_MIN] = BIN2BCD(tm->tm_min); @@ -266,26 +195,29 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, /* should we also set the date? */ if (datetoo) { + dev_dbg(&client->dev, + "%s: mday=%d, mon=%d, year=%d, wday=%d\n", + __FUNCTION__, + tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday); + buf[CCR_MDAY] = BIN2BCD(tm->tm_mday); - /* month, 0 - 11 */ - buf[CCR_MONTH] = BIN2BCD(tm->tm_mon); + /* month, 1 - 12 */ + buf[CCR_MONTH] = BIN2BCD(tm->tm_mon + 1); - /* year, since 1900 */ - buf[CCR_YEAR] = BIN2BCD(tm->tm_year + 1900 - data->epoch); + /* year, since the rtc epoch*/ + buf[CCR_YEAR] = BIN2BCD(tm->tm_year % 100); buf[CCR_WDAY] = tm->tm_wday & 0x07; - buf[CCR_Y2K] = BIN2BCD(data->epoch / 100); + buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100); } /* this sequence is required to unlock the chip */ - xfer = i2c_master_send(client, wel, 3); - if (xfer != 3) { + if ((xfer = i2c_master_send(client, wel, 3)) != 3) { dev_err(&client->dev, "%s: wel - %d\n", __FUNCTION__, xfer); return -EIO; } - xfer = i2c_master_send(client, rwel, 3); - if (xfer != 3) { + if ((xfer = i2c_master_send(client, rwel, 3)) != 3) { dev_err(&client->dev, "%s: rwel - %d\n", __FUNCTION__, xfer); return -EIO; } @@ -305,8 +237,7 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, }; /* disable further writes */ - xfer = i2c_master_send(client, diswe, 3); - if (xfer != 3) { + if ((xfer = i2c_master_send(client, diswe, 3)) != 3) { dev_err(&client->dev, "%s: diswe - %d\n", __FUNCTION__, xfer); return -EIO; } @@ -314,6 +245,20 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, return 0; } +static int x1205_fix_osc(struct i2c_client *client) +{ + int err; + struct rtc_time tm; + + tm.tm_hour = tm.tm_min = tm.tm_sec = 0; + + if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0) + dev_err(&client->dev, + "unable to restart the oscillator\n"); + + return err; +} + static int x1205_get_dtrim(struct i2c_client *client, int *trim) { unsigned char dtr; @@ -380,60 +325,9 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim) return 0; } -static int x1205_hctosys(struct i2c_client *client) -{ - int err; - - struct rtc_time tm; - struct timespec tv; - - err = x1205_command(client, X1205_CMD_GETDATETIME, &tm); - - if (err) { - dev_err(&client->dev, - "Unable to set the system clock\n"); - return err; - } - - /* IMPORTANT: the RTC only stores whole seconds. It is arbitrary - * whether it stores the most close value or the value with partial - * seconds truncated. However, it is important that we use it to store - * the truncated value. This is because otherwise it is necessary, - * in an rtc sync function, to read both xtime.tv_sec and - * xtime.tv_nsec. On some processors (i.e. ARM), an atomic read - * of >32bits is not possible. So storing the most close value would - * slow down the sync API. So here we have the truncated value and - * the best guess is to add 0.5s. - */ - - tv.tv_nsec = NSEC_PER_SEC >> 1; - - /* WARNING: this is not the C library 'mktime' call, it is a built in - * inline function from include/linux/time.h. It expects (requires) - * the month to be in the range 1-12 - */ - - tv.tv_sec = mktime(tm.tm_year + 1900, tm.tm_mon + 1, - tm.tm_mday, tm.tm_hour, - tm.tm_min, tm.tm_sec); - - do_settimeofday(&tv); - - dev_info(&client->dev, - "setting the system clock to %d-%d-%d %d:%d:%d\n", - tm.tm_year + 1900, tm.tm_mon + 1, - tm.tm_mday, tm.tm_hour, tm.tm_min, - tm.tm_sec); - - return 0; -} - struct x1205_limit { - unsigned char reg; - unsigned char mask; - unsigned char min; - unsigned char max; + unsigned char reg, mask, min, max; }; static int x1205_validate_client(struct i2c_client *client) @@ -477,11 +371,10 @@ static int x1205_validate_client(struct i2c_client *client) { client->addr, I2C_M_RD, 1, &buf }, }; - xfer = i2c_transfer(client->adapter, msgs, 2); - if (xfer != 2) { + if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) { dev_err(&client->adapter->dev, "%s: could not read register %x\n", - __FUNCTION__, addr[1]); + __FUNCTION__, probe_zero_pattern[i]); return -EIO; } @@ -489,7 +382,7 @@ static int x1205_validate_client(struct i2c_client *client) if ((buf & probe_zero_pattern[i+1]) != 0) { dev_err(&client->adapter->dev, "%s: register=%02x, zero pattern=%d, value=%x\n", - __FUNCTION__, addr[1], i, buf); + __FUNCTION__, probe_zero_pattern[i], i, buf); return -ENODEV; } @@ -506,12 +399,10 @@ static int x1205_validate_client(struct i2c_client *client) { client->addr, I2C_M_RD, 1, ® }, }; - xfer = i2c_transfer(client->adapter, msgs, 2); - - if (xfer != 2) { + if ((xfer = i2c_transfer(client->adapter, msgs, 2)) != 2) { dev_err(&client->adapter->dev, "%s: could not read register %x\n", - __FUNCTION__, addr[1]); + __FUNCTION__, probe_limits_pattern[i].reg); return -EIO; } @@ -522,7 +413,8 @@ static int x1205_validate_client(struct i2c_client *client) value < probe_limits_pattern[i].min) { dev_dbg(&client->adapter->dev, "%s: register=%x, lim pattern=%d, value=%d\n", - __FUNCTION__, addr[1], i, value); + __FUNCTION__, probe_limits_pattern[i].reg, + i, value); return -ENODEV; } @@ -531,37 +423,89 @@ static int x1205_validate_client(struct i2c_client *client) return 0; } -static int x1205_attach(struct i2c_adapter *adapter) +static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { - dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + return x1205_get_datetime(to_i2c_client(dev), + &alrm->time, X1205_ALM0_BASE); +} - return i2c_probe(adapter, &addr_data, x1205_probe); +static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + return x1205_set_datetime(to_i2c_client(dev), + &alrm->time, 1, X1205_ALM0_BASE); } -int x1205_direct_attach(int adapter_id, - struct i2c_client_address_data *address_data) +static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm) { - int err; - struct i2c_adapter *adapter = i2c_get_adapter(adapter_id); + return x1205_get_datetime(to_i2c_client(dev), + tm, X1205_CCR_BASE); +} - if (adapter) { - err = i2c_probe(adapter, - address_data, x1205_probe); +static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + return x1205_set_datetime(to_i2c_client(dev), + tm, 1, X1205_CCR_BASE); +} - i2c_put_adapter(adapter); +static int x1205_rtc_proc(struct device *dev, struct seq_file *seq) +{ + int err, dtrim, atrim; - return err; - } + seq_printf(seq, "24hr\t\t: yes\n"); - return -ENODEV; + if ((err = x1205_get_dtrim(to_i2c_client(dev), &dtrim)) == 0) + seq_printf(seq, "digital_trim\t: %d ppm\n", dtrim); + + if ((err = x1205_get_atrim(to_i2c_client(dev), &atrim)) == 0) + seq_printf(seq, "analog_trim\t: %d.%02d pF\n", + atrim / 1000, atrim % 1000); + return 0; } -static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) +static struct rtc_class_ops x1205_rtc_ops = { + .proc = x1205_rtc_proc, + .read_time = x1205_rtc_read_time, + .set_time = x1205_rtc_set_time, + .read_alarm = x1205_rtc_read_alarm, + .set_alarm = x1205_rtc_set_alarm, +}; + +static ssize_t x1205_sysfs_show_atrim(struct device *dev, + struct device_attribute *attr, char *buf) { - struct i2c_client *client; - struct x1205_data *data; + int atrim; + + if (x1205_get_atrim(to_i2c_client(dev), &atrim) == 0) + return sprintf(buf, "%d.%02d pF\n", + atrim / 1000, atrim % 1000); + return 0; +} +static DEVICE_ATTR(atrim, S_IRUGO, x1205_sysfs_show_atrim, NULL); + +static ssize_t x1205_sysfs_show_dtrim(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int dtrim; + + if (x1205_get_dtrim(to_i2c_client(dev), &dtrim) == 0) + return sprintf(buf, "%d ppm\n", dtrim); + + return 0; +} +static DEVICE_ATTR(dtrim, S_IRUGO, x1205_sysfs_show_dtrim, NULL); +static int x1205_attach(struct i2c_adapter *adapter) +{ + dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); + return i2c_probe(adapter, &addr_data, x1205_probe); +} + +static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) +{ int err = 0; + unsigned char sr; + struct i2c_client *client; + struct rtc_device *rtc; dev_dbg(&adapter->dev, "%s\n", __FUNCTION__); @@ -570,22 +514,17 @@ static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) goto exit; } - if (!(data = kzalloc(sizeof(struct x1205_data), GFP_KERNEL))) { + if (!(client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL))) { err = -ENOMEM; goto exit; } - /* Initialize our structures */ - data->epoch = 2000; - - client = &data->client; + /* I2C client */ client->addr = address; client->driver = &x1205_driver; client->adapter = adapter; - strlcpy(client->name, "x1205", I2C_NAME_SIZE); - - i2c_set_clientdata(client, data); + strlcpy(client->name, x1205_driver.driver.name, I2C_NAME_SIZE); /* Verify the chip is really an X1205 */ if (kind < 0) { @@ -599,18 +538,43 @@ static int x1205_probe(struct i2c_adapter *adapter, int address, int kind) if ((err = i2c_attach_client(client))) goto exit_kfree; - list_add(&data->list, &x1205_clients); - dev_info(&client->dev, "chip found, driver version " DRV_VERSION "\n"); - /* If requested, set the system time */ - if (hctosys) - x1205_hctosys(client); + rtc = rtc_device_register(x1205_driver.driver.name, &client->dev, + &x1205_rtc_ops, THIS_MODULE); + + if (IS_ERR(rtc)) { + err = PTR_ERR(rtc); + dev_err(&client->dev, + "unable to register the class device\n"); + goto exit_detach; + } + + i2c_set_clientdata(client, rtc); + + /* Check for power failures and eventualy enable the osc */ + if ((err = x1205_get_status(client, &sr)) == 0) { + if (sr & X1205_SR_RTCF) { + dev_err(&client->dev, + "power failure detected, " + "please set the clock\n"); + udelay(50); + x1205_fix_osc(client); + } + } + else + dev_err(&client->dev, "couldn't read status\n"); + + device_create_file(&client->dev, &dev_attr_atrim); + device_create_file(&client->dev, &dev_attr_dtrim); return 0; +exit_detach: + i2c_detach_client(client); + exit_kfree: - kfree(data); + kfree(client); exit: return err; @@ -619,61 +583,21 @@ exit: static int x1205_detach(struct i2c_client *client) { int err; - struct x1205_data *data = i2c_get_clientdata(client); + struct rtc_device *rtc = i2c_get_clientdata(client); dev_dbg(&client->dev, "%s\n", __FUNCTION__); + if (rtc) + rtc_device_unregister(rtc); + if ((err = i2c_detach_client(client))) return err; - list_del(&data->list); - - kfree(data); + kfree(client); return 0; } -static int x1205_command(struct i2c_client *client, unsigned int cmd, - void *param) -{ - if (param == NULL) - return -EINVAL; - - if (!capable(CAP_SYS_TIME)) - return -EACCES; - - dev_dbg(&client->dev, "%s: cmd=%d\n", __FUNCTION__, cmd); - - switch (cmd) { - case X1205_CMD_GETDATETIME: - return x1205_get_datetime(client, param, X1205_CCR_BASE); - - case X1205_CMD_SETTIME: - return x1205_set_datetime(client, param, 0, - X1205_CCR_BASE); - - case X1205_CMD_SETDATETIME: - return x1205_set_datetime(client, param, 1, - X1205_CCR_BASE); - - case X1205_CMD_GETALARM: - return x1205_get_datetime(client, param, X1205_ALM0_BASE); - - case X1205_CMD_SETALARM: - return x1205_set_datetime(client, param, 1, - X1205_ALM0_BASE); - - case X1205_CMD_GETDTRIM: - return x1205_get_dtrim(client, param); - - case X1205_CMD_GETATRIM: - return x1205_get_atrim(client, param); - - default: - return -EINVAL; - } -} - static int __init x1205_init(void) { return i2c_add_driver(&x1205_driver); @@ -685,14 +609,11 @@ static void __exit x1205_exit(void) } MODULE_AUTHOR( - "Karen Spearel <kas11@tampabay.rr.com>, " + "Karen Spearel <kas111 at gmail dot com>, " "Alessandro Zummo <a.zummo@towertech.it>"); -MODULE_DESCRIPTION("Xicor X1205 RTC driver"); +MODULE_DESCRIPTION("Xicor/Intersil X1205 RTC driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); -EXPORT_SYMBOL_GPL(x1205_do_command); -EXPORT_SYMBOL_GPL(x1205_direct_attach); - module_init(x1205_init); module_exit(x1205_exit); diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c index 2f720108a7e..c1c6f138115 100644 --- a/drivers/s390/block/dasd_devmap.c +++ b/drivers/s390/block/dasd_devmap.c @@ -437,8 +437,7 @@ dasd_forget_ranges(void) spin_lock(&dasd_devmap_lock); for (i = 0; i < 256; i++) { list_for_each_entry_safe(devmap, n, &dasd_hashlists[i], list) { - if (devmap->device != NULL) - BUG(); + BUG_ON(devmap->device != NULL); list_del(&devmap->list); kfree(devmap); } @@ -547,8 +546,7 @@ dasd_delete_device(struct dasd_device *device) /* First remove device pointer from devmap. */ devmap = dasd_find_busid(device->cdev->dev.bus_id); - if (IS_ERR(devmap)) - BUG(); + BUG_ON(IS_ERR(devmap)); spin_lock(&dasd_devmap_lock); if (devmap->device != device) { spin_unlock(&dasd_devmap_lock); diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c index bd06607a5dc..eecb2afad5c 100644 --- a/drivers/s390/char/raw3270.c +++ b/drivers/s390/char/raw3270.c @@ -28,6 +28,7 @@ #include <linux/major.h> #include <linux/kdev_t.h> #include <linux/device.h> +#include <linux/mutex.h> struct class *class3270; @@ -59,7 +60,7 @@ struct raw3270 { #define RAW3270_FLAGS_CONSOLE 8 /* Device is the console. */ /* Semaphore to protect global data of raw3270 (devices, views, etc). */ -static DECLARE_MUTEX(raw3270_sem); +static DEFINE_MUTEX(raw3270_mutex); /* List of 3270 devices. */ static struct list_head raw3270_devices = LIST_HEAD_INIT(raw3270_devices); @@ -815,7 +816,7 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc) * number for it. Note: there is no device with minor 0, * see special case for fs3270.c:fs3270_open(). */ - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); /* Keep the list sorted. */ minor = RAW3270_FIRSTMINOR; rp->minor = -1; @@ -832,7 +833,7 @@ raw3270_setup_device(struct ccw_device *cdev, struct raw3270 *rp, char *ascebc) rp->minor = minor; list_add_tail(&rp->list, &raw3270_devices); } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); /* No free minor number? Then give up. */ if (rp->minor == -1) return -EUSERS; @@ -1003,7 +1004,7 @@ raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor) if (minor <= 0) return -ENODEV; - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); rc = -ENODEV; list_for_each_entry(rp, &raw3270_devices, list) { if (rp->minor != minor) @@ -1024,7 +1025,7 @@ raw3270_add_view(struct raw3270_view *view, struct raw3270_fn *fn, int minor) spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); break; } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); return rc; } @@ -1038,7 +1039,7 @@ raw3270_find_view(struct raw3270_fn *fn, int minor) struct raw3270_view *view, *tmp; unsigned long flags; - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); view = ERR_PTR(-ENODEV); list_for_each_entry(rp, &raw3270_devices, list) { if (rp->minor != minor) @@ -1057,7 +1058,7 @@ raw3270_find_view(struct raw3270_fn *fn, int minor) spin_unlock_irqrestore(get_ccwdev_lock(rp->cdev), flags); break; } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); return view; } @@ -1104,7 +1105,7 @@ raw3270_delete_device(struct raw3270 *rp) struct ccw_device *cdev; /* Remove from device chain. */ - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); if (rp->clttydev) class_device_destroy(class3270, MKDEV(IBM_TTY3270_MAJOR, rp->minor)); @@ -1112,7 +1113,7 @@ raw3270_delete_device(struct raw3270 *rp) class_device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, rp->minor)); list_del_init(&rp->list); - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); /* Disconnect from ccw_device. */ cdev = rp->cdev; @@ -1208,13 +1209,13 @@ int raw3270_register_notifier(void (*notifier)(int, int)) if (!np) return -ENOMEM; np->notifier = notifier; - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); list_add_tail(&np->list, &raw3270_notifier); list_for_each_entry(rp, &raw3270_devices, list) { get_device(&rp->cdev->dev); notifier(rp->minor, 1); } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); return 0; } @@ -1222,14 +1223,14 @@ void raw3270_unregister_notifier(void (*notifier)(int, int)) { struct raw3270_notifier *np; - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); list_for_each_entry(np, &raw3270_notifier, list) if (np->notifier == notifier) { list_del(&np->list); kfree(np); break; } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); } /* @@ -1256,10 +1257,10 @@ raw3270_set_online (struct ccw_device *cdev) goto failure; raw3270_create_attributes(rp); set_bit(RAW3270_FLAGS_READY, &rp->flags); - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); list_for_each_entry(np, &raw3270_notifier, list) np->notifier(rp->minor, 1); - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); return 0; failure: @@ -1307,10 +1308,10 @@ raw3270_remove (struct ccw_device *cdev) } spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags); - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); list_for_each_entry(np, &raw3270_notifier, list) np->notifier(rp->minor, 0); - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); /* Reset 3270 device. */ raw3270_reset_device(rp); @@ -1370,13 +1371,13 @@ raw3270_init(void) rc = ccw_driver_register(&raw3270_ccw_driver); if (rc == 0) { /* Create attributes for early (= console) device. */ - down(&raw3270_sem); + mutex_lock(&raw3270_mutex); class3270 = class_create(THIS_MODULE, "3270"); list_for_each_entry(rp, &raw3270_devices, list) { get_device(&rp->cdev->dev); raw3270_create_attributes(rp); } - up(&raw3270_sem); + mutex_unlock(&raw3270_mutex); } return rc; } diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 95b92f317b6..395cfc6a344 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -829,18 +829,6 @@ zfcp_unit_dequeue(struct zfcp_unit *unit) device_unregister(&unit->sysfs_device); } -static void * -zfcp_mempool_alloc(gfp_t gfp_mask, void *size) -{ - return kmalloc((size_t) size, gfp_mask); -} - -static void -zfcp_mempool_free(void *element, void *size) -{ - kfree(element); -} - /* * Allocates a combined QTCB/fsf_req buffer for erp actions and fcp/SCSI * commands. @@ -853,51 +841,39 @@ static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter) { adapter->pool.fsf_req_erp = - mempool_create(ZFCP_POOL_FSF_REQ_ERP_NR, - zfcp_mempool_alloc, zfcp_mempool_free, (void *) - sizeof(struct zfcp_fsf_req_pool_element)); - - if (NULL == adapter->pool.fsf_req_erp) + mempool_create_kmalloc_pool(ZFCP_POOL_FSF_REQ_ERP_NR, + sizeof(struct zfcp_fsf_req_pool_element)); + if (!adapter->pool.fsf_req_erp) return -ENOMEM; adapter->pool.fsf_req_scsi = - mempool_create(ZFCP_POOL_FSF_REQ_SCSI_NR, - zfcp_mempool_alloc, zfcp_mempool_free, (void *) - sizeof(struct zfcp_fsf_req_pool_element)); - - if (NULL == adapter->pool.fsf_req_scsi) + mempool_create_kmalloc_pool(ZFCP_POOL_FSF_REQ_SCSI_NR, + sizeof(struct zfcp_fsf_req_pool_element)); + if (!adapter->pool.fsf_req_scsi) return -ENOMEM; adapter->pool.fsf_req_abort = - mempool_create(ZFCP_POOL_FSF_REQ_ABORT_NR, - zfcp_mempool_alloc, zfcp_mempool_free, (void *) - sizeof(struct zfcp_fsf_req_pool_element)); - - if (NULL == adapter->pool.fsf_req_abort) + mempool_create_kmalloc_pool(ZFCP_POOL_FSF_REQ_ABORT_NR, + sizeof(struct zfcp_fsf_req_pool_element)); + if (!adapter->pool.fsf_req_abort) return -ENOMEM; adapter->pool.fsf_req_status_read = - mempool_create(ZFCP_POOL_STATUS_READ_NR, - zfcp_mempool_alloc, zfcp_mempool_free, - (void *) sizeof(struct zfcp_fsf_req)); - - if (NULL == adapter->pool.fsf_req_status_read) + mempool_create_kmalloc_pool(ZFCP_POOL_STATUS_READ_NR, + sizeof(struct zfcp_fsf_req)); + if (!adapter->pool.fsf_req_status_read) return -ENOMEM; adapter->pool.data_status_read = - mempool_create(ZFCP_POOL_STATUS_READ_NR, - zfcp_mempool_alloc, zfcp_mempool_free, - (void *) sizeof(struct fsf_status_read_buffer)); - - if (NULL == adapter->pool.data_status_read) + mempool_create_kmalloc_pool(ZFCP_POOL_STATUS_READ_NR, + sizeof(struct fsf_status_read_buffer)); + if (!adapter->pool.data_status_read) return -ENOMEM; adapter->pool.data_gid_pn = - mempool_create(ZFCP_POOL_DATA_GID_PN_NR, - zfcp_mempool_alloc, zfcp_mempool_free, (void *) - sizeof(struct zfcp_gid_pn_data)); - - if (NULL == adapter->pool.data_gid_pn) + mempool_create_kmalloc_pool(ZFCP_POOL_DATA_GID_PN_NR, + sizeof(struct zfcp_gid_pn_data)); + if (!adapter->pool.data_gid_pn) return -ENOMEM; return 0; diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 0ab26d01877..0d2b447c50e 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -1026,7 +1026,7 @@ static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; } /* End twa_free_request_id() */ -/* This function will get parameter table entires from the firmware */ +/* This function will get parameter table entries from the firmware */ static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) { TW_Command_Full *full_command_packet; diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c index 1c459343292..bde3d5834ad 100644 --- a/drivers/scsi/BusLogic.c +++ b/drivers/scsi/BusLogic.c @@ -41,6 +41,8 @@ #include <linux/stat.h> #include <linux/pci.h> #include <linux/spinlock.h> +#include <linux/jiffies.h> +#include <linux/dma-mapping.h> #include <scsi/scsicam.h> #include <asm/dma.h> @@ -676,7 +678,7 @@ static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAd if (pci_enable_device(PCI_Device)) continue; - if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff)) + if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK )) continue; Bus = PCI_Device->bus->number; @@ -831,7 +833,7 @@ static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAd if (pci_enable_device(PCI_Device)) continue; - if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff)) + if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK)) continue; Bus = PCI_Device->bus->number; @@ -885,7 +887,7 @@ static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAda if (pci_enable_device(PCI_Device)) continue; - if (pci_set_dma_mask(PCI_Device, (u64) 0xffffffff)) + if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK)) continue; Bus = PCI_Device->bus->number; @@ -2896,7 +2898,7 @@ static int BusLogic_QueueCommand(struct scsi_cmnd *Command, void (*CompletionRou */ if (HostAdapter->ActiveCommands[TargetID] == 0) HostAdapter->LastSequencePoint[TargetID] = jiffies; - else if (jiffies - HostAdapter->LastSequencePoint[TargetID] > 4 * HZ) { + else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) { HostAdapter->LastSequencePoint[TargetID] = jiffies; QueueTag = BusLogic_OrderedQueueTag; } diff --git a/drivers/scsi/a100u2w.c b/drivers/scsi/a100u2w.c index 9f45ae1745d..3dce21c7873 100644 --- a/drivers/scsi/a100u2w.c +++ b/drivers/scsi/a100u2w.c @@ -89,6 +89,7 @@ #include <linux/string.h> #include <linux/ioport.h> #include <linux/slab.h> +#include <linux/dma-mapping.h> #include <asm/io.h> #include <asm/irq.h> @@ -1052,7 +1053,7 @@ static int __devinit inia100_probe_one(struct pci_dev *pdev, if (pci_enable_device(pdev)) goto out; - if (pci_set_dma_mask(pdev, 0xffffffffULL)) { + if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "Unable to set 32bit DMA " "on inia100 adapter, ignoring.\n"); goto out_disable_device; diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index a16f8ded8f1..8df4a0ea376 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -32,6 +32,7 @@ #include <linux/slab.h> #include <linux/completion.h> #include <linux/blkdev.h> +#include <linux/dma-mapping.h> #include <asm/semaphore.h> #include <asm/uaccess.h> diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index c2596335549..72033077864 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -45,6 +45,7 @@ #include <linux/pci.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/dma-mapping.h> #include <linux/syscalls.h> #include <linux/delay.h> #include <linux/smp_lock.h> @@ -806,8 +807,8 @@ static int __devinit aac_probe_one(struct pci_dev *pdev, * to driver communication memory to be allocated below 2gig */ if (aac_drivers[index].quirks & AAC_QUIRK_31BIT) - if (pci_set_dma_mask(pdev, 0x7FFFFFFFULL) || - pci_set_consistent_dma_mask(pdev, 0x7FFFFFFFULL)) + if (pci_set_dma_mask(pdev, DMA_31BIT_MASK) || + pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK)) goto out; pci_set_master(pdev); diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c index 5227a779c05..a198d86667e 100644 --- a/drivers/scsi/atp870u.c +++ b/drivers/scsi/atp870u.c @@ -28,6 +28,7 @@ #include <linux/spinlock.h> #include <linux/pci.h> #include <linux/blkdev.h> +#include <linux/dma-mapping.h> #include <asm/system.h> #include <asm/io.h> @@ -2631,7 +2632,7 @@ static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (pci_enable_device(pdev)) return -EIO; - if (!pci_set_dma_mask(pdev, 0xFFFFFFFFUL)) { + if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_INFO "atp870u: use 32bit DMA mask.\n"); } else { printk(KERN_ERR "atp870u: DMA mask required but not available.\n"); diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index 6e6b293dcb2..b1b704a42ef 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -57,6 +57,7 @@ MODULE_DESCRIPTION("Adaptec I2O RAID Driver"); #include <linux/reboot.h> #include <linux/spinlock.h> #include <linux/smp_lock.h> +#include <linux/dma-mapping.h> #include <linux/timer.h> #include <linux/string.h> @@ -906,8 +907,8 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev } pci_set_master(pDev); - if (pci_set_dma_mask(pDev, 0xffffffffffffffffULL) && - pci_set_dma_mask(pDev, 0xffffffffULL)) + if (pci_set_dma_mask(pDev, DMA_64BIT_MASK) && + pci_set_dma_mask(pDev, DMA_32BIT_MASK)) return -EINVAL; base_addr0_phys = pci_resource_start(pDev,0); diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index b3f9de8f759..059eeee4b55 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -490,6 +490,7 @@ #include <linux/init.h> #include <linux/ctype.h> #include <linux/spinlock.h> +#include <linux/dma-mapping.h> #include <asm/byteorder.h> #include <asm/dma.h> #include <asm/io.h> @@ -1426,7 +1427,7 @@ static int port_detect(unsigned long port_base, unsigned int j, if (ha->pdev) { pci_set_master(ha->pdev); - if (pci_set_dma_mask(ha->pdev, 0xffffffff)) + if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) printk("%s: warning, pci_set_dma_mask failed.\n", ha->board_name); } diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c index 62e3cda859a..d5740bbdef3 100644 --- a/drivers/scsi/gdth.c +++ b/drivers/scsi/gdth.c @@ -388,6 +388,7 @@ #include <linux/proc_fs.h> #include <linux/time.h> #include <linux/timer.h> +#include <linux/dma-mapping.h> #ifdef GDTH_RTC #include <linux/mc146818rtc.h> #endif @@ -671,7 +672,7 @@ static struct file_operations gdth_fops = { static struct notifier_block gdth_notifier = { gdth_halt, NULL, 0 }; - +static int notifier_disabled = 0; static void gdth_delay(int milliseconds) { @@ -4527,15 +4528,15 @@ static int __init gdth_detect(struct scsi_host_template *shtp) if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat &GDT_64BIT)|| /* 64-bit DMA only supported from FW >= x.43 */ (!ha->dma64_support)) { - if (pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffff)) { + if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "GDT-PCI %d: Unable to set 32-bit DMA\n", hanum); err = TRUE; } } else { shp->max_cmd_len = 16; - if (!pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffffffffffffULL)) { + if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) { printk("GDT-PCI %d: 64-bit DMA enabled\n", hanum); - } else if (pci_set_dma_mask(pcistr[ctr].pdev, 0xffffffff)) { + } else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "GDT-PCI %d: Unable to set 64/32-bit DMA\n", hanum); err = TRUE; } @@ -4595,13 +4596,13 @@ static int __init gdth_detect(struct scsi_host_template *shtp) add_timer(&gdth_timer); #endif major = register_chrdev(0,"gdth",&gdth_fops); + notifier_disabled = 0; register_reboot_notifier(&gdth_notifier); } gdth_polling = FALSE; return gdth_ctr_vcount; } - static int gdth_release(struct Scsi_Host *shp) { int hanum; @@ -5632,10 +5633,14 @@ static int gdth_halt(struct notifier_block *nb, ulong event, void *buf) char cmnd[MAX_COMMAND_SIZE]; #endif + if (notifier_disabled) + return NOTIFY_OK; + TRACE2(("gdth_halt() event %d\n",(int)event)); if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF) return NOTIFY_DONE; + notifier_disabled = 1; printk("GDT-HA: Flushing all host drives .. "); for (hanum = 0; hanum < gdth_ctr_count; ++hanum) { gdth_flush(hanum); @@ -5679,7 +5684,6 @@ static int gdth_halt(struct notifier_block *nb, ulong event, void *buf) #ifdef GDTH_STATISTICS del_timer(&gdth_timer); #endif - unregister_reboot_notifier(&gdth_notifier); return NOTIFY_OK; } diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c index ea6f3c0e05d..0cc7f65b584 100644 --- a/drivers/scsi/initio.c +++ b/drivers/scsi/initio.c @@ -127,6 +127,7 @@ #include <linux/sched.h> #include <linux/slab.h> #include <linux/jiffies.h> +#include <linux/dma-mapping.h> #include <asm/io.h> #include <scsi/scsi.h> @@ -2780,7 +2781,7 @@ static int tul_NewReturnNumberOfAdapters(void) if (((dRegValue & 0xFF00) >> 8) == 0xFF) dRegValue = 0; wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8)); - if (pci_set_dma_mask(pDev, 0xffffffff)) { + if (pci_set_dma_mask(pDev, DMA_32BIT_MASK)) { printk(KERN_WARNING "i91u: Could not set 32 bit DMA mask\n"); continue; diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c index 481708d527a..a4c0b04cfdb 100644 --- a/drivers/scsi/ips.c +++ b/drivers/scsi/ips.c @@ -179,6 +179,7 @@ #include <linux/blkdev.h> #include <linux/types.h> +#include <linux/dma-mapping.h> #include <scsi/sg.h> @@ -7284,10 +7285,10 @@ ips_init_phase1(struct pci_dev *pci_dev, int *indexPtr) * are guaranteed to be < 4G. */ if (IPS_ENABLE_DMA64 && IPS_HAS_ENH_SGLIST(ha) && - !pci_set_dma_mask(ha->pcidev, 0xffffffffffffffffULL)) { + !pci_set_dma_mask(ha->pcidev, DMA_64BIT_MASK)) { (ha)->flags |= IPS_HA_ENH_SG; } else { - if (pci_set_dma_mask(ha->pcidev, 0xffffffffULL) != 0) { + if (pci_set_dma_mask(ha->pcidev, DMA_32BIT_MASK) != 0) { printk(KERN_WARNING "Unable to set DMA Mask\n"); return ips_abort_init(ha, index); } diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 7b82ff090d4..2068b66822b 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -3200,8 +3200,8 @@ iscsi_r2tpool_alloc(struct iscsi_session *session) * Data-Out PDU's within R2T-sequence can be quite big; * using mempool */ - ctask->datapool = mempool_create(ISCSI_DTASK_DEFAULT_MAX, - mempool_alloc_slab, mempool_free_slab, taskcache); + ctask->datapool = mempool_create_slab_pool(ISCSI_DTASK_DEFAULT_MAX, + taskcache); if (ctask->datapool == NULL) { kfifo_free(ctask->r2tqueue); iscsi_pool_free(&ctask->r2tpool, (void**)ctask->r2ts); diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c index 352df47bcac..07017658ac5 100644 --- a/drivers/scsi/lpfc/lpfc_mem.c +++ b/drivers/scsi/lpfc/lpfc_mem.c @@ -38,18 +38,6 @@ #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ -static void * -lpfc_pool_kmalloc(gfp_t gfp_flags, void *data) -{ - return kmalloc((unsigned long)data, gfp_flags); -} - -static void -lpfc_pool_kfree(void *obj, void *data) -{ - kfree(obj); -} - int lpfc_mem_alloc(struct lpfc_hba * phba) { @@ -79,15 +67,13 @@ lpfc_mem_alloc(struct lpfc_hba * phba) pool->current_count++; } - phba->mbox_mem_pool = mempool_create(LPFC_MEM_POOL_SIZE, - lpfc_pool_kmalloc, lpfc_pool_kfree, - (void *)(unsigned long)sizeof(LPFC_MBOXQ_t)); + phba->mbox_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, + sizeof(LPFC_MBOXQ_t)); if (!phba->mbox_mem_pool) goto fail_free_mbuf_pool; - phba->nlp_mem_pool = mempool_create(LPFC_MEM_POOL_SIZE, - lpfc_pool_kmalloc, lpfc_pool_kfree, - (void *)(unsigned long)sizeof(struct lpfc_nodelist)); + phba->nlp_mem_pool = mempool_create_kmalloc_pool(LPFC_MEM_POOL_SIZE, + sizeof(struct lpfc_nodelist)); if (!phba->nlp_mem_pool) goto fail_free_mbox_pool; diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 7144674bc8e..80b68a2481b 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -45,6 +45,7 @@ #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/init.h> +#include <linux/dma-mapping.h> #include <scsi/scsicam.h> #include "scsi.h" @@ -2094,7 +2095,7 @@ make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); - if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) { + if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) { kfree(*pdev); return -1; } @@ -4859,10 +4860,10 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) /* Set the Mode of addressing to 64 bit if we can */ if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { - pci_set_dma_mask(pdev, 0xffffffffffffffffULL); + pci_set_dma_mask(pdev, DMA_64BIT_MASK); adapter->has_64bit_addr = 1; } else { - pci_set_dma_mask(pdev, 0xffffffff); + pci_set_dma_mask(pdev, DMA_32BIT_MASK); adapter->has_64bit_addr = 0; } diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c index a279ebb6144..30ee0ef4b45 100644 --- a/drivers/scsi/nsp32.c +++ b/drivers/scsi/nsp32.c @@ -38,6 +38,7 @@ #include <linux/pci.h> #include <linux/delay.h> #include <linux/ctype.h> +#include <linux/dma-mapping.h> #include <asm/dma.h> #include <asm/system.h> @@ -2776,7 +2777,7 @@ static int nsp32_detect(struct scsi_host_template *sht) /* * setup DMA */ - if (pci_set_dma_mask(PCIDEV, 0xffffffffUL) != 0) { + if (pci_set_dma_mask(PCIDEV, DMA_32BIT_MASK) != 0) { nsp32_msg (KERN_ERR, "failed to set PCI DMA mask"); goto scsi_unregister; } diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c index 66ea47a9c53..e3bd4bc339f 100644 --- a/drivers/scsi/osst.c +++ b/drivers/scsi/osst.c @@ -49,6 +49,7 @@ static const char * osst_version = "0.99.4"; #include <linux/blkdev.h> #include <linux/moduleparam.h> #include <linux/delay.h> +#include <linux/jiffies.h> #include <asm/uaccess.h> #include <asm/dma.h> #include <asm/system.h> @@ -856,7 +857,7 @@ static int osst_wait_frame(struct osst_tape * STp, struct osst_request ** aSRpnt ) && result >= 0) { #if DEBUG - if (debugging || jiffies - startwait >= 2*HZ/OSST_POLL_PER_SEC) + if (debugging || time_after_eq(jiffies, startwait + 2*HZ/OSST_POLL_PER_SEC)) printk (OSST_DEB_MSG "%s:D: Succ wait f fr %i (>%i): %i-%i %i (%i): %3li.%li s\n", name, curr, curr+minlast, STp->first_frame_position, @@ -867,7 +868,7 @@ static int osst_wait_frame(struct osst_tape * STp, struct osst_request ** aSRpnt return 0; } #if DEBUG - if (jiffies - startwait >= 2*HZ/OSST_POLL_PER_SEC && notyetprinted) + if (time_after_eq(jiffies, startwait + 2*HZ/OSST_POLL_PER_SEC) && notyetprinted) { printk (OSST_DEB_MSG "%s:D: Wait for frame %i (>%i): %i-%i %i (%i)\n", name, curr, curr+minlast, STp->first_frame_position, diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c index 05347eed9dd..fee843fab1c 100644 --- a/drivers/scsi/ppa.c +++ b/drivers/scsi/ppa.c @@ -18,6 +18,7 @@ #include <linux/parport.h> #include <linux/workqueue.h> #include <linux/delay.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <scsi/scsi.h> @@ -726,7 +727,7 @@ static int ppa_engine(ppa_struct *dev, struct scsi_cmnd *cmd) retv--; if (retv) { - if ((jiffies - dev->jstart) > (1 * HZ)) { + if (time_after(jiffies, dev->jstart + (1 * HZ))) { printk ("ppa: Parallel port cable is unplugged!!\n"); ppa_fail(dev, DID_BUS_BUSY); diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c index e0230249fa0..5a48e55f941 100644 --- a/drivers/scsi/qla1280.c +++ b/drivers/scsi/qla1280.c @@ -350,6 +350,7 @@ #include <linux/pci_ids.h> #include <linux/interrupt.h> #include <linux/init.h> +#include <linux/dma-mapping.h> #include <asm/io.h> #include <asm/irq.h> @@ -4321,7 +4322,7 @@ qla1280_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) #ifdef QLA_64BIT_PTR if (pci_set_dma_mask(ha->pdev, (dma_addr_t) ~ 0ULL)) { - if (pci_set_dma_mask(ha->pdev, 0xffffffff)) { + if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "scsi(%li): Unable to set a " "suitable DMA mask - aborting\n", ha->host_no); error = -ENODEV; @@ -4331,7 +4332,7 @@ qla1280_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) dprintk(2, "scsi(%li): 64 Bit PCI Addressing Enabled\n", ha->host_no); #else - if (pci_set_dma_mask(ha->pdev, 0xffffffff)) { + if (pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "scsi(%li): Unable to set a " "suitable DMA mask - aborting\n", ha->host_no); error = -ENODEV; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 029bbf461bb..017729c59a4 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -2154,8 +2154,7 @@ qla2x00_allocate_sp_pool(scsi_qla_host_t *ha) int rval; rval = QLA_SUCCESS; - ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, - mempool_free_slab, srb_cachep); + ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep); if (ha->srb_mempool == NULL) { qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n"); rval = QLA_FUNCTION_FAILED; diff --git a/drivers/scsi/qlogicfc.c b/drivers/scsi/qlogicfc.c index 94ef3f08d37..52b224a5d6f 100644 --- a/drivers/scsi/qlogicfc.c +++ b/drivers/scsi/qlogicfc.c @@ -61,6 +61,8 @@ #include <linux/unistd.h> #include <linux/spinlock.h> #include <linux/interrupt.h> +#include <linux/dma-mapping.h> +#include <linux/jiffies.h> #include <asm/io.h> #include <asm/irq.h> #include "scsi.h" @@ -737,8 +739,8 @@ static int isp2x00_detect(struct scsi_host_template * tmpt) continue; /* Try to configure DMA attributes. */ - if (pci_set_dma_mask(pdev, 0xffffffffffffffffULL) && - pci_set_dma_mask(pdev, 0xffffffffULL)) + if (pci_set_dma_mask(pdev, DMA_64BIT_MASK) && + pci_set_dma_mask(pdev, DMA_32BIT_MASK)) continue; host = scsi_register(tmpt, sizeof(struct isp2x00_hostdata)); @@ -1325,7 +1327,7 @@ static int isp2x00_queuecommand(Scsi_Cmnd * Cmnd, void (*done) (Scsi_Cmnd *)) cmd->control_flags = cpu_to_le16(CFLAG_READ); if (Cmnd->device->tagged_supported) { - if ((jiffies - hostdata->tag_ages[Cmnd->device->id]) > (2 * ISP_TIMEOUT)) { + if (time_after(jiffies, hostdata->tag_ages[Cmnd->device->id] + (2 * ISP_TIMEOUT))) { cmd->control_flags |= cpu_to_le16(CFLAG_ORDERED_TAG); hostdata->tag_ages[Cmnd->device->id] = jiffies; } else diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c index 1fd5fc6d0fe..c7e78dcf09d 100644 --- a/drivers/scsi/qlogicpti.c +++ b/drivers/scsi/qlogicpti.c @@ -24,6 +24,7 @@ #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/module.h> +#include <linux/jiffies.h> #include <asm/byteorder.h> @@ -1017,7 +1018,7 @@ static inline void cmd_frob(struct Command_Entry *cmd, struct scsi_cmnd *Cmnd, if (Cmnd->device->tagged_supported) { if (qpti->cmd_count[Cmnd->device->id] == 0) qpti->tag_ages[Cmnd->device->id] = jiffies; - if ((jiffies - qpti->tag_ages[Cmnd->device->id]) > (5*HZ)) { + if (time_after(jiffies, qpti->tag_ages[Cmnd->device->id] + (5*HZ))) { cmd->control_flags = CFLAG_ORDERED_TAG; qpti->tag_ages[Cmnd->device->id] = jiffies; } else diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index ede158d08d9..8f010a314a3 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1787,9 +1787,8 @@ int __init scsi_init_queue(void) sgp->name); } - sgp->pool = mempool_create(SG_MEMPOOL_SIZE, - mempool_alloc_slab, mempool_free_slab, - sgp->slab); + sgp->pool = mempool_create_slab_pool(SG_MEMPOOL_SIZE, + sgp->slab); if (!sgp->pool) { printk(KERN_ERR "SCSI: can't init sg mempool %s\n", sgp->name); diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 5996d3cd0ed..674b15c78f6 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1528,7 +1528,7 @@ static int serial8250_startup(struct uart_port *port) /* * Clear the FIFO buffers and disable them. - * (they will be reeanbled in set_termios()) + * (they will be reenabled in set_termios()) */ serial8250_clear_fifos(up); diff --git a/drivers/serial/8250_au1x00.c b/drivers/serial/8250_au1x00.c index 8d8d7a70d03..3d1bfd07208 100644 --- a/drivers/serial/8250_au1x00.c +++ b/drivers/serial/8250_au1x00.c @@ -51,7 +51,7 @@ static struct plat_serial8250_port au1x00_data[] = { #elif defined(CONFIG_SOC_AU1100) PORT(UART0_ADDR, AU1100_UART0_INT), PORT(UART1_ADDR, AU1100_UART1_INT), - PORT(UART2_ADDR, AU1100_UART2_INT), + /* The internal UART2 does not exist on the AU1100 processor. */ PORT(UART3_ADDR, AU1100_UART3_INT), #elif defined(CONFIG_SOC_AU1550) PORT(UART0_ADDR, AU1550_UART0_INT), diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index ceb3697bf84..fe0d8b8e91c 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -620,22 +620,6 @@ config SERIAL_SH_SCI_CONSOLE depends on SERIAL_SH_SCI=y select SERIAL_CORE_CONSOLE -config SERIAL_AU1X00 - bool "Enable Au1x00 UART Support" - depends on MIPS && SOC_AU1X00 - select SERIAL_CORE - help - If you have an Alchemy AU1X00 processor (MIPS based) and you want - to use serial ports, say Y. Otherwise, say N. - -config SERIAL_AU1X00_CONSOLE - bool "Enable Au1x00 serial console" - depends on SERIAL_AU1X00 - select SERIAL_CORE_CONSOLE - help - If you have an Alchemy AU1X00 processor (MIPS based) and you want - to use a console on a serial port, say Y. Otherwise, say N. - config SERIAL_CORE tristate diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index a3a4323d9c8..d2b4c214876 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -41,7 +41,6 @@ obj-$(CONFIG_SERIAL_COLDFIRE) += mcfserial.o obj-$(CONFIG_V850E_UART) += v850e_uart.o obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o obj-$(CONFIG_SERIAL_LH7A40X) += serial_lh7a40x.o -obj-$(CONFIG_SERIAL_AU1X00) += au1x00_uart.o obj-$(CONFIG_SERIAL_DZ) += dz.o obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index 127d6cd5de7..1631414000a 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -51,8 +51,6 @@ #include <linux/amba/serial.h> #include <asm/io.h> -#include <asm/irq.h> -#include <asm/hardware.h> #define UART_NR 2 @@ -65,26 +63,16 @@ #define UART_RX_DATA(s) (((s) & UART01x_FR_RXFE) == 0) #define UART_TX_READY(s) (((s) & UART01x_FR_TXFF) == 0) -#define UART_DUMMY_RSR_RX /*256*/0 +#define UART_DUMMY_RSR_RX 256 #define UART_PORT_SIZE 64 /* - * On the Integrator platform, the port RTS and DTR are provided by - * bits in the following SC_CTRLS register bits: - * RTS DTR - * UART0 7 6 - * UART1 5 4 - */ -#define SC_CTRLC (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLC_OFFSET) -#define SC_CTRLS (IO_ADDRESS(INTEGRATOR_SC_BASE) + INTEGRATOR_SC_CTRLS_OFFSET) - -/* * We wrap our port structure around the generic uart_port. */ struct uart_amba_port { struct uart_port port; - unsigned int dtr_mask; - unsigned int rts_mask; + struct amba_device *dev; + struct amba_pl010_data *data; unsigned int old_status; }; @@ -300,20 +288,9 @@ static unsigned int pl010_get_mctrl(struct uart_port *port) static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl) { struct uart_amba_port *uap = (struct uart_amba_port *)port; - unsigned int ctrls = 0, ctrlc = 0; - - if (mctrl & TIOCM_RTS) - ctrlc |= uap->rts_mask; - else - ctrls |= uap->rts_mask; - if (mctrl & TIOCM_DTR) - ctrlc |= uap->dtr_mask; - else - ctrls |= uap->dtr_mask; - - __raw_writel(ctrls, SC_CTRLS); - __raw_writel(ctrlc, SC_CTRLC); + if (uap->data) + uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl); } static void pl010_break_ctl(struct uart_port *port, int break_state) @@ -539,38 +516,7 @@ static struct uart_ops amba_pl010_pops = { .verify_port = pl010_verify_port, }; -static struct uart_amba_port amba_ports[UART_NR] = { - { - .port = { - .membase = (void *)IO_ADDRESS(INTEGRATOR_UART0_BASE), - .mapbase = INTEGRATOR_UART0_BASE, - .iotype = UPIO_MEM, - .irq = IRQ_UARTINT0, - .uartclk = 14745600, - .fifosize = 16, - .ops = &amba_pl010_pops, - .flags = UPF_BOOT_AUTOCONF, - .line = 0, - }, - .dtr_mask = 1 << 5, - .rts_mask = 1 << 4, - }, - { - .port = { - .membase = (void *)IO_ADDRESS(INTEGRATOR_UART1_BASE), - .mapbase = INTEGRATOR_UART1_BASE, - .iotype = UPIO_MEM, - .irq = IRQ_UARTINT1, - .uartclk = 14745600, - .fifosize = 16, - .ops = &amba_pl010_pops, - .flags = UPF_BOOT_AUTOCONF, - .line = 1, - }, - .dtr_mask = 1 << 7, - .rts_mask = 1 << 6, - } -}; +static struct uart_amba_port *amba_ports[UART_NR]; #ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE @@ -588,7 +534,7 @@ static void pl010_console_putchar(struct uart_port *port, int ch) static void pl010_console_write(struct console *co, const char *s, unsigned int count) { - struct uart_port *port = &amba_ports[co->index].port; + struct uart_port *port = &amba_ports[co->index]->port; unsigned int status, old_cr; /* @@ -651,7 +597,7 @@ static int __init pl010_console_setup(struct console *co, char *options) */ if (co->index >= UART_NR) co->index = 0; - port = &amba_ports[co->index].port; + port = &amba_ports[co->index]->port; if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); @@ -672,24 +618,6 @@ static struct console amba_console = { .data = &amba_reg, }; -static int __init amba_console_init(void) -{ - /* - * All port initializations are done statically - */ - register_console(&amba_console); - return 0; -} -console_initcall(amba_console_init); - -static int __init amba_late_console_init(void) -{ - if (!(amba_console.flags & CON_ENABLED)) - register_console(&amba_console); - return 0; -} -late_initcall(amba_late_console_init); - #define AMBA_CONSOLE &amba_console #else #define AMBA_CONSOLE NULL @@ -707,30 +635,76 @@ static struct uart_driver amba_reg = { static int pl010_probe(struct amba_device *dev, void *id) { - int i; + struct uart_amba_port *port; + void __iomem *base; + int i, ret; - for (i = 0; i < UART_NR; i++) { - if (amba_ports[i].port.mapbase != dev->res.start) - continue; + for (i = 0; i < ARRAY_SIZE(amba_ports); i++) + if (amba_ports[i] == NULL) + break; - amba_ports[i].port.dev = &dev->dev; - uart_add_one_port(&amba_reg, &amba_ports[i].port); - amba_set_drvdata(dev, &amba_ports[i]); - break; + if (i == ARRAY_SIZE(amba_ports)) { + ret = -EBUSY; + goto out; } - return 0; + port = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL); + if (!port) { + ret = -ENOMEM; + goto out; + } + + base = ioremap(dev->res.start, PAGE_SIZE); + if (!base) { + ret = -ENOMEM; + goto free; + } + + port->port.dev = &dev->dev; + port->port.mapbase = dev->res.start; + port->port.membase = base; + port->port.iotype = UPIO_MEM; + port->port.irq = dev->irq[0]; + port->port.uartclk = 14745600; + port->port.fifosize = 16; + port->port.ops = &amba_pl010_pops; + port->port.flags = UPF_BOOT_AUTOCONF; + port->port.line = i; + port->dev = dev; + port->data = dev->dev.platform_data; + + amba_ports[i] = port; + + amba_set_drvdata(dev, port); + ret = uart_add_one_port(&amba_reg, &port->port); + if (ret) { + amba_set_drvdata(dev, NULL); + amba_ports[i] = NULL; + iounmap(base); + free: + kfree(port); + } + + out: + return ret; } static int pl010_remove(struct amba_device *dev) { - struct uart_amba_port *uap = amba_get_drvdata(dev); - - if (uap) - uart_remove_one_port(&amba_reg, &uap->port); + struct uart_amba_port *port = amba_get_drvdata(dev); + int i; amba_set_drvdata(dev, NULL); + uart_remove_one_port(&amba_reg, &port->port); + + for (i = 0; i < ARRAY_SIZE(amba_ports); i++) + if (amba_ports[i] == port) + amba_ports[i] = NULL; + + iounmap(port->port.membase); + kfree(port); + return 0; } diff --git a/drivers/serial/au1x00_uart.c b/drivers/serial/au1x00_uart.c deleted file mode 100644 index 948880ac587..00000000000 --- a/drivers/serial/au1x00_uart.c +++ /dev/null @@ -1,1287 +0,0 @@ -/* - * Driver for 8250/16550-type serial ports - * - * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. - * - * Copyright (C) 2001 Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * A note about mapbase / membase - * - * mapbase is the physical address of the IO port. Currently, we don't - * support this very well, and it may well be dropped from this driver - * in future. As such, mapbase should be NULL. - * - * membase is an 'ioremapped' cookie. This is compatible with the old - * serial.c driver, and is currently the preferred form. - */ -#include <linux/config.h> -#include <linux/module.h> -#include <linux/tty.h> -#include <linux/ioport.h> -#include <linux/init.h> -#include <linux/console.h> -#include <linux/sysrq.h> -#include <linux/serial.h> -#include <linux/serialP.h> -#include <linux/delay.h> - -#include <asm/serial.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/mach-au1x00/au1000.h> - -#if defined(CONFIG_SERIAL_AU1X00_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - -#include <linux/serial_core.h> -#include "8250.h" - -/* - * Debugging. - */ -#if 0 -#define DEBUG_AUTOCONF(fmt...) printk(fmt) -#else -#define DEBUG_AUTOCONF(fmt...) do { } while (0) -#endif - -#if 0 -#define DEBUG_INTR(fmt...) printk(fmt) -#else -#define DEBUG_INTR(fmt...) do { } while (0) -#endif - -#define PASS_LIMIT 256 - -/* - * We default to IRQ0 for the "no irq" hack. Some - * machine types want others as well - they're free - * to redefine this in their header file. - */ -#define is_real_interrupt(irq) ((irq) != 0) - -static struct old_serial_port old_serial_port[] = { - { .baud_base = 0, - .iomem_base = (u8 *)UART0_ADDR, - .irq = AU1000_UART0_INT, - .flags = STD_COM_FLAGS, - .iomem_reg_shift = 2, - }, { - .baud_base = 0, - .iomem_base = (u8 *)UART1_ADDR, - .irq = AU1000_UART1_INT, - .flags = STD_COM_FLAGS, - .iomem_reg_shift = 2 - }, { - .baud_base = 0, - .iomem_base = (u8 *)UART2_ADDR, - .irq = AU1000_UART2_INT, - .flags = STD_COM_FLAGS, - .iomem_reg_shift = 2 - }, { - .baud_base = 0, - .iomem_base = (u8 *)UART3_ADDR, - .irq = AU1000_UART3_INT, - .flags = STD_COM_FLAGS, - .iomem_reg_shift = 2 - } -}; - -#define UART_NR ARRAY_SIZE(old_serial_port) - -struct uart_8250_port { - struct uart_port port; - struct timer_list timer; /* "no irq" timer */ - struct list_head list; /* ports on this IRQ */ - unsigned short rev; - unsigned char acr; - unsigned char ier; - unsigned char lcr; - unsigned char mcr_mask; /* mask of user bits */ - unsigned char mcr_force; /* mask of forced bits */ - unsigned char lsr_break_flag; - - /* - * We provide a per-port pm hook. - */ - void (*pm)(struct uart_port *port, - unsigned int state, unsigned int old); -}; - -struct irq_info { - spinlock_t lock; - struct list_head *head; -}; - -static struct irq_info irq_lists[NR_IRQS]; - -/* - * Here we define the default xmit fifo size used for each type of UART. - */ -static const struct serial_uart_config uart_config[PORT_MAX_8250+1] = { - { "unknown", 1, 0 }, - { "8250", 1, 0 }, - { "16450", 1, 0 }, - { "16550", 1, 0 }, - /* PORT_16550A */ - { "AU1X00_UART",16, UART_CLEAR_FIFO | UART_USE_FIFO }, -}; - -static unsigned int serial_in(struct uart_8250_port *up, int offset) -{ - return au_readl((unsigned long)up->port.membase + offset); -} - -static void serial_out(struct uart_8250_port *up, int offset, int value) -{ - au_writel(value, (unsigned long)up->port.membase + offset); -} - -#define serial_inp(up, offset) serial_in(up, offset) -#define serial_outp(up, offset, value) serial_out(up, offset, value) - -/* - * This routine is called by rs_init() to initialize a specific serial - * port. It determines what type of UART chip this serial port is - * using: 8250, 16450, 16550, 16550A. The important question is - * whether or not this UART is a 16550A or not, since this will - * determine whether or not we can use its FIFO features or not. - */ -static void autoconfig(struct uart_8250_port *up, unsigned int probeflags) -{ - unsigned char save_lcr, save_mcr; - unsigned long flags; - - if (!up->port.iobase && !up->port.mapbase && !up->port.membase) - return; - - DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04x, 0x%08lx): ", - up->port.line, up->port.iobase, up->port.membase); - - /* - * We really do need global IRQs disabled here - we're going to - * be frobbing the chips IRQ enable register to see if it exists. - */ - spin_lock_irqsave(&up->port.lock, flags); -// save_flags(flags); cli(); - - save_mcr = serial_in(up, UART_MCR); - save_lcr = serial_in(up, UART_LCR); - - up->port.type = PORT_16550A; - serial_outp(up, UART_LCR, save_lcr); - - up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size; - - if (up->port.type == PORT_UNKNOWN) - goto out; - - /* - * Reset the UART. - */ - serial_outp(up, UART_MCR, save_mcr); - serial_outp(up, UART_FCR, (UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | - UART_FCR_CLEAR_XMIT)); - serial_outp(up, UART_FCR, 0); - (void)serial_in(up, UART_RX); - serial_outp(up, UART_IER, 0); - - out: - spin_unlock_irqrestore(&up->port.lock, flags); -// restore_flags(flags); - DEBUG_AUTOCONF("type=%s\n", uart_config[up->port.type].name); -} - -static void serial8250_stop_tx(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - - if (up->ier & UART_IER_THRI) { - up->ier &= ~UART_IER_THRI; - serial_out(up, UART_IER, up->ier); - } -} - -static void serial8250_start_tx(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - - if (!(up->ier & UART_IER_THRI)) { - up->ier |= UART_IER_THRI; - serial_out(up, UART_IER, up->ier); - } -} - -static void serial8250_stop_rx(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - - up->ier &= ~UART_IER_RLSI; - up->port.read_status_mask &= ~UART_LSR_DR; - serial_out(up, UART_IER, up->ier); -} - -static void serial8250_enable_ms(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - - up->ier |= UART_IER_MSI; - serial_out(up, UART_IER, up->ier); -} - -static void -receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs) -{ - struct tty_struct *tty = up->port.info->tty; - unsigned char ch, flag; - int max_count = 256; - - do { - ch = serial_inp(up, UART_RX); - flag = TTY_NORMAL; - up->port.icount.rx++; - - if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE | - UART_LSR_FE | UART_LSR_OE))) { - /* - * For statistics only - */ - if (*status & UART_LSR_BI) { - *status &= ~(UART_LSR_FE | UART_LSR_PE); - up->port.icount.brk++; - /* - * We do the SysRQ and SAK checking - * here because otherwise the break - * may get masked by ignore_status_mask - * or read_status_mask. - */ - if (uart_handle_break(&up->port)) - goto ignore_char; - } else if (*status & UART_LSR_PE) - up->port.icount.parity++; - else if (*status & UART_LSR_FE) - up->port.icount.frame++; - if (*status & UART_LSR_OE) - up->port.icount.overrun++; - - /* - * Mask off conditions which should be ingored. - */ - *status &= up->port.read_status_mask; - -#ifdef CONFIG_SERIAL_AU1X00_CONSOLE - if (up->port.line == up->port.cons->index) { - /* Recover the break flag from console xmit */ - *status |= up->lsr_break_flag; - up->lsr_break_flag = 0; - } -#endif - if (*status & UART_LSR_BI) { - DEBUG_INTR("handling break...."); - flag = TTY_BREAK; - } else if (*status & UART_LSR_PE) - flag = TTY_PARITY; - else if (*status & UART_LSR_FE) - flag = TTY_FRAME; - } - if (uart_handle_sysrq_char(&up->port, ch, regs)) - goto ignore_char; - if ((*status & up->port.ignore_status_mask) == 0) - tty_insert_flip_char(tty, ch, flag); - if (*status & UART_LSR_OE) - /* - * Overrun is special, since it's reported - * immediately, and doesn't affect the current - * character. - */ - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - ignore_char: - *status = serial_inp(up, UART_LSR); - } while ((*status & UART_LSR_DR) && (max_count-- > 0)); - spin_unlock(&up->port.lock); - tty_flip_buffer_push(tty); - spin_lock(&up->port.lock); -} - -static void transmit_chars(struct uart_8250_port *up) -{ - struct circ_buf *xmit = &up->port.info->xmit; - int count; - - if (up->port.x_char) { - serial_outp(up, UART_TX, up->port.x_char); - up->port.icount.tx++; - up->port.x_char = 0; - return; - } - if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) { - serial8250_stop_tx(&up->port); - return; - } - - count = up->port.fifosize; - do { - serial_out(up, UART_TX, xmit->buf[xmit->tail]); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - up->port.icount.tx++; - if (uart_circ_empty(xmit)) - break; - } while (--count > 0); - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(&up->port); - - DEBUG_INTR("THRE..."); - - if (uart_circ_empty(xmit)) - serial8250_stop_tx(&up->port); -} - -static void check_modem_status(struct uart_8250_port *up) -{ - int status; - - status = serial_in(up, UART_MSR); - - if ((status & UART_MSR_ANY_DELTA) == 0) - return; - - if (status & UART_MSR_TERI) - up->port.icount.rng++; - if (status & UART_MSR_DDSR) - up->port.icount.dsr++; - if (status & UART_MSR_DDCD) - uart_handle_dcd_change(&up->port, status & UART_MSR_DCD); - if (status & UART_MSR_DCTS) - uart_handle_cts_change(&up->port, status & UART_MSR_CTS); - - wake_up_interruptible(&up->port.info->delta_msr_wait); -} - -/* - * This handles the interrupt from one port. - */ -static inline void -serial8250_handle_port(struct uart_8250_port *up, struct pt_regs *regs) -{ - unsigned int status = serial_inp(up, UART_LSR); - - DEBUG_INTR("status = %x...", status); - - if (status & UART_LSR_DR) - receive_chars(up, &status, regs); - check_modem_status(up); - if (status & UART_LSR_THRE) - transmit_chars(up); -} - -/* - * This is the serial driver's interrupt routine. - * - * Arjan thinks the old way was overly complex, so it got simplified. - * Alan disagrees, saying that need the complexity to handle the weird - * nature of ISA shared interrupts. (This is a special exception.) - * - * In order to handle ISA shared interrupts properly, we need to check - * that all ports have been serviced, and therefore the ISA interrupt - * line has been de-asserted. - * - * This means we need to loop through all ports. checking that they - * don't have an interrupt pending. - */ -static irqreturn_t serial8250_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - struct irq_info *i = dev_id; - struct list_head *l, *end = NULL; - int pass_counter = 0; - - DEBUG_INTR("serial8250_interrupt(%d)...", irq); - - spin_lock(&i->lock); - - l = i->head; - do { - struct uart_8250_port *up; - unsigned int iir; - - up = list_entry(l, struct uart_8250_port, list); - - iir = serial_in(up, UART_IIR); - if (!(iir & UART_IIR_NO_INT)) { - spin_lock(&up->port.lock); - serial8250_handle_port(up, regs); - spin_unlock(&up->port.lock); - - end = NULL; - } else if (end == NULL) - end = l; - - l = l->next; - - if (l == i->head && pass_counter++ > PASS_LIMIT) { - /* If we hit this, we're dead. */ - printk(KERN_ERR "serial8250: too much work for " - "irq%d\n", irq); - break; - } - } while (l != end); - - spin_unlock(&i->lock); - - DEBUG_INTR("end.\n"); - /* FIXME! Was it really ours? */ - return IRQ_HANDLED; -} - -/* - * To support ISA shared interrupts, we need to have one interrupt - * handler that ensures that the IRQ line has been deasserted - * before returning. Failing to do this will result in the IRQ - * line being stuck active, and, since ISA irqs are edge triggered, - * no more IRQs will be seen. - */ -static void serial_do_unlink(struct irq_info *i, struct uart_8250_port *up) -{ - spin_lock_irq(&i->lock); - - if (!list_empty(i->head)) { - if (i->head == &up->list) - i->head = i->head->next; - list_del(&up->list); - } else { - BUG_ON(i->head != &up->list); - i->head = NULL; - } - - spin_unlock_irq(&i->lock); -} - -static int serial_link_irq_chain(struct uart_8250_port *up) -{ - struct irq_info *i = irq_lists + up->port.irq; - int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? SA_SHIRQ : 0; - - spin_lock_irq(&i->lock); - - if (i->head) { - list_add(&up->list, i->head); - spin_unlock_irq(&i->lock); - - ret = 0; - } else { - INIT_LIST_HEAD(&up->list); - i->head = &up->list; - spin_unlock_irq(&i->lock); - - ret = request_irq(up->port.irq, serial8250_interrupt, - irq_flags, "serial", i); - if (ret < 0) - serial_do_unlink(i, up); - } - - return ret; -} - -static void serial_unlink_irq_chain(struct uart_8250_port *up) -{ - struct irq_info *i = irq_lists + up->port.irq; - - BUG_ON(i->head == NULL); - - if (list_empty(i->head)) - free_irq(up->port.irq, i); - - serial_do_unlink(i, up); -} - -/* - * This function is used to handle ports that do not have an - * interrupt. This doesn't work very well for 16450's, but gives - * barely passable results for a 16550A. (Although at the expense - * of much CPU overhead). - */ -static void serial8250_timeout(unsigned long data) -{ - struct uart_8250_port *up = (struct uart_8250_port *)data; - unsigned int timeout; - unsigned int iir; - - iir = serial_in(up, UART_IIR); - if (!(iir & UART_IIR_NO_INT)) { - spin_lock(&up->port.lock); - serial8250_handle_port(up, NULL); - spin_unlock(&up->port.lock); - } - - timeout = up->port.timeout; - timeout = timeout > 6 ? (timeout / 2 - 2) : 1; - mod_timer(&up->timer, jiffies + timeout); -} - -static unsigned int serial8250_tx_empty(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned long flags; - unsigned int ret; - - spin_lock_irqsave(&up->port.lock, flags); - ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0; - spin_unlock_irqrestore(&up->port.lock, flags); - - return ret; -} - -static unsigned int serial8250_get_mctrl(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned char status; - unsigned int ret; - - status = serial_in(up, UART_MSR); - - ret = 0; - if (status & UART_MSR_DCD) - ret |= TIOCM_CAR; - if (status & UART_MSR_RI) - ret |= TIOCM_RNG; - if (status & UART_MSR_DSR) - ret |= TIOCM_DSR; - if (status & UART_MSR_CTS) - ret |= TIOCM_CTS; - return ret; -} - -static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned char mcr = 0; - - if (mctrl & TIOCM_RTS) - mcr |= UART_MCR_RTS; - if (mctrl & TIOCM_DTR) - mcr |= UART_MCR_DTR; - if (mctrl & TIOCM_OUT1) - mcr |= UART_MCR_OUT1; - if (mctrl & TIOCM_OUT2) - mcr |= UART_MCR_OUT2; - if (mctrl & TIOCM_LOOP) - mcr |= UART_MCR_LOOP; - - mcr = (mcr & up->mcr_mask) | up->mcr_force; - - serial_out(up, UART_MCR, mcr); -} - -static void serial8250_break_ctl(struct uart_port *port, int break_state) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned long flags; - - spin_lock_irqsave(&up->port.lock, flags); - if (break_state == -1) - up->lcr |= UART_LCR_SBC; - else - up->lcr &= ~UART_LCR_SBC; - serial_out(up, UART_LCR, up->lcr); - spin_unlock_irqrestore(&up->port.lock, flags); -} - -static int serial8250_startup(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned long flags; - int retval; - - /* - * Clear the FIFO buffers and disable them. - * (they will be reeanbled in set_termios()) - */ - if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) { - serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO); - serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); - serial_outp(up, UART_FCR, 0); - } - - /* - * Clear the interrupt registers. - */ - (void) serial_inp(up, UART_LSR); - (void) serial_inp(up, UART_RX); - (void) serial_inp(up, UART_IIR); - (void) serial_inp(up, UART_MSR); - - /* - * At this point, there's no way the LSR could still be 0xff; - * if it is, then bail out, because there's likely no UART - * here. - */ - if (!(up->port.flags & UPF_BUGGY_UART) && - (serial_inp(up, UART_LSR) == 0xff)) { - printk("ttyS%d: LSR safety check engaged!\n", up->port.line); - return -ENODEV; - } - - retval = serial_link_irq_chain(up); - if (retval) - return retval; - - /* - * Now, initialize the UART - */ - serial_outp(up, UART_LCR, UART_LCR_WLEN8); - - spin_lock_irqsave(&up->port.lock, flags); - if (up->port.flags & UPF_FOURPORT) { - if (!is_real_interrupt(up->port.irq)) - up->port.mctrl |= TIOCM_OUT1; - } else - /* - * Most PC uarts need OUT2 raised to enable interrupts. - */ - if (is_real_interrupt(up->port.irq)) - up->port.mctrl |= TIOCM_OUT2; - - serial8250_set_mctrl(&up->port, up->port.mctrl); - spin_unlock_irqrestore(&up->port.lock, flags); - - /* - * Finally, enable interrupts. Note: Modem status interrupts - * are set via set_termios(), which will be occurring imminently - * anyway, so we don't enable them here. - */ - up->ier = UART_IER_RLSI | UART_IER_RDI; - serial_outp(up, UART_IER, up->ier); - - if (up->port.flags & UPF_FOURPORT) { - unsigned int icp; - /* - * Enable interrupts on the AST Fourport board - */ - icp = (up->port.iobase & 0xfe0) | 0x01f; - outb_p(0x80, icp); - (void) inb_p(icp); - } - - /* - * And clear the interrupt registers again for luck. - */ - (void) serial_inp(up, UART_LSR); - (void) serial_inp(up, UART_RX); - (void) serial_inp(up, UART_IIR); - (void) serial_inp(up, UART_MSR); - - return 0; -} - -static void serial8250_shutdown(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned long flags; - - /* - * Disable interrupts from this port - */ - up->ier = 0; - serial_outp(up, UART_IER, 0); - - spin_lock_irqsave(&up->port.lock, flags); - if (up->port.flags & UPF_FOURPORT) { - /* reset interrupts on the AST Fourport board */ - inb((up->port.iobase & 0xfe0) | 0x1f); - up->port.mctrl |= TIOCM_OUT1; - } else - up->port.mctrl &= ~TIOCM_OUT2; - - serial8250_set_mctrl(&up->port, up->port.mctrl); - spin_unlock_irqrestore(&up->port.lock, flags); - - /* - * Disable break condition and FIFOs - */ - serial_out(up, UART_LCR, serial_inp(up, UART_LCR) & ~UART_LCR_SBC); - serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | - UART_FCR_CLEAR_XMIT); - serial_outp(up, UART_FCR, 0); - - /* - * Read data port to reset things, and then unlink from - * the IRQ chain. - */ - (void) serial_in(up, UART_RX); - - if (!is_real_interrupt(up->port.irq)) - del_timer_sync(&up->timer); - else - serial_unlink_irq_chain(up); -} - -static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int baud) -{ - unsigned int quot; - - /* - * Handle magic divisors for baud rates above baud_base on - * SMSC SuperIO chips. - */ - if ((port->flags & UPF_MAGIC_MULTIPLIER) && - baud == (port->uartclk/4)) - quot = 0x8001; - else if ((port->flags & UPF_MAGIC_MULTIPLIER) && - baud == (port->uartclk/8)) - quot = 0x8002; - else - quot = uart_get_divisor(port, baud); - - return quot; -} - -static void -serial8250_set_termios(struct uart_port *port, struct termios *termios, - struct termios *old) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned char cval, fcr = 0; - unsigned long flags; - unsigned int baud, quot; - - switch (termios->c_cflag & CSIZE) { - case CS5: - cval = UART_LCR_WLEN5; - break; - case CS6: - cval = UART_LCR_WLEN6; - break; - case CS7: - cval = UART_LCR_WLEN7; - break; - default: - case CS8: - cval = UART_LCR_WLEN8; - break; - } - - if (termios->c_cflag & CSTOPB) - cval |= UART_LCR_STOP; - if (termios->c_cflag & PARENB) - cval |= UART_LCR_PARITY; - if (!(termios->c_cflag & PARODD)) - cval |= UART_LCR_EPAR; -#ifdef CMSPAR - if (termios->c_cflag & CMSPAR) - cval |= UART_LCR_SPAR; -#endif - - /* - * Ask the core to calculate the divisor for us. - */ - baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); - quot = serial8250_get_divisor(port, baud); - quot = 0x35; /* FIXME */ - - /* - * Work around a bug in the Oxford Semiconductor 952 rev B - * chip which causes it to seriously miscalculate baud rates - * when DLL is 0. - */ - if ((quot & 0xff) == 0 && up->port.type == PORT_16C950 && - up->rev == 0x5201) - quot ++; - - if (uart_config[up->port.type].flags & UART_USE_FIFO) { - if (baud < 2400) - fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIGGER_1; - else - fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIGGER_8; - } - - /* - * Ok, we're now changing the port state. Do it with - * interrupts disabled. - */ - spin_lock_irqsave(&up->port.lock, flags); - - /* - * Update the per-port timeout. - */ - uart_update_timeout(port, termios->c_cflag, baud); - - up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; - if (termios->c_iflag & INPCK) - up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; - if (termios->c_iflag & (BRKINT | PARMRK)) - up->port.read_status_mask |= UART_LSR_BI; - - /* - * Characteres to ignore - */ - up->port.ignore_status_mask = 0; - if (termios->c_iflag & IGNPAR) - up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; - if (termios->c_iflag & IGNBRK) { - up->port.ignore_status_mask |= UART_LSR_BI; - /* - * If we're ignoring parity and break indicators, - * ignore overruns too (for real raw support). - */ - if (termios->c_iflag & IGNPAR) - up->port.ignore_status_mask |= UART_LSR_OE; - } - - /* - * ignore all characters if CREAD is not set - */ - if ((termios->c_cflag & CREAD) == 0) - up->port.ignore_status_mask |= UART_LSR_DR; - - /* - * CTS flow control flag and modem status interrupts - */ - up->ier &= ~UART_IER_MSI; - if (UART_ENABLE_MS(&up->port, termios->c_cflag)) - up->ier |= UART_IER_MSI; - - serial_out(up, UART_IER, up->ier); - serial_outp(up, 0x28, quot & 0xffff); - up->lcr = cval; /* Save LCR */ - if (up->port.type != PORT_16750) { - if (fcr & UART_FCR_ENABLE_FIFO) { - /* emulated UARTs (Lucent Venus 167x) need two steps */ - serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO); - } - serial_outp(up, UART_FCR, fcr); /* set fcr */ - } - spin_unlock_irqrestore(&up->port.lock, flags); -} - -static void -serial8250_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - if (state) { - /* sleep */ - if (up->pm) - up->pm(port, state, oldstate); - } else { - /* wake */ - if (up->pm) - up->pm(port, state, oldstate); - } -} - -/* - * Resource handling. This is complicated by the fact that resources - * depend on the port type. Maybe we should be claiming the standard - * 8250 ports, and then trying to get other resources as necessary? - */ -static int -serial8250_request_std_resource(struct uart_8250_port *up, struct resource **res) -{ - unsigned int size = 8 << up->port.regshift; - int ret = 0; - - switch (up->port.iotype) { - case UPIO_MEM: - if (up->port.mapbase) { - *res = request_mem_region(up->port.mapbase, size, "serial"); - if (!*res) - ret = -EBUSY; - } - break; - - case UPIO_HUB6: - case UPIO_PORT: - *res = request_region(up->port.iobase, size, "serial"); - if (!*res) - ret = -EBUSY; - break; - } - return ret; -} - - -static void serial8250_release_port(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - unsigned long start, offset = 0, size = 0; - - size <<= up->port.regshift; - - switch (up->port.iotype) { - case UPIO_MEM: - if (up->port.mapbase) { - /* - * Unmap the area. - */ - iounmap(up->port.membase); - up->port.membase = NULL; - - start = up->port.mapbase; - - if (size) - release_mem_region(start + offset, size); - release_mem_region(start, 8 << up->port.regshift); - } - break; - - case UPIO_HUB6: - case UPIO_PORT: - start = up->port.iobase; - - if (size) - release_region(start + offset, size); - release_region(start + offset, 8 << up->port.regshift); - break; - - default: - break; - } -} - -static int serial8250_request_port(struct uart_port *port) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - struct resource *res = NULL, *res_rsa = NULL; - int ret = 0; - - ret = serial8250_request_std_resource(up, &res); - - /* - * If we have a mapbase, then request that as well. - */ - if (ret == 0 && up->port.flags & UPF_IOREMAP) { - int size = res->end - res->start + 1; - - up->port.membase = ioremap(up->port.mapbase, size); - if (!up->port.membase) - ret = -ENOMEM; - } - - if (ret < 0) { - if (res_rsa) - release_resource(res_rsa); - if (res) - release_resource(res); - } - return ret; -} - -static void serial8250_config_port(struct uart_port *port, int flags) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - struct resource *res_std = NULL, *res_rsa = NULL; - int probeflags = PROBE_ANY; - - probeflags &= ~PROBE_RSA; - - if (flags & UART_CONFIG_TYPE) - autoconfig(up, probeflags); - - /* - * If the port wasn't an RSA port, release the resource. - */ - if (up->port.type != PORT_RSA && res_rsa) - release_resource(res_rsa); - - if (up->port.type == PORT_UNKNOWN && res_std) - release_resource(res_std); -} - -static int -serial8250_verify_port(struct uart_port *port, struct serial_struct *ser) -{ - if (ser->irq >= NR_IRQS || ser->irq < 0 || - ser->baud_base < 9600 || ser->type < PORT_UNKNOWN || - ser->type > PORT_MAX_8250 || ser->type == PORT_CIRRUS || - ser->type == PORT_STARTECH) - return -EINVAL; - return 0; -} - -static const char * -serial8250_type(struct uart_port *port) -{ - int type = port->type; - - if (type >= ARRAY_SIZE(uart_config)) - type = 0; - return uart_config[type].name; -} - -static struct uart_ops serial8250_pops = { - .tx_empty = serial8250_tx_empty, - .set_mctrl = serial8250_set_mctrl, - .get_mctrl = serial8250_get_mctrl, - .stop_tx = serial8250_stop_tx, - .start_tx = serial8250_start_tx, - .stop_rx = serial8250_stop_rx, - .enable_ms = serial8250_enable_ms, - .break_ctl = serial8250_break_ctl, - .startup = serial8250_startup, - .shutdown = serial8250_shutdown, - .set_termios = serial8250_set_termios, - .pm = serial8250_pm, - .type = serial8250_type, - .release_port = serial8250_release_port, - .request_port = serial8250_request_port, - .config_port = serial8250_config_port, - .verify_port = serial8250_verify_port, -}; - -static struct uart_8250_port serial8250_ports[UART_NR]; - -static void __init serial8250_isa_init_ports(void) -{ - struct uart_8250_port *up; - static int first = 1; - int i; - - if (!first) - return; - first = 0; - - for (i = 0, up = serial8250_ports; i < ARRAY_SIZE(old_serial_port); - i++, up++) { - up->port.iobase = old_serial_port[i].port; - up->port.irq = old_serial_port[i].irq; - up->port.uartclk = get_au1x00_uart_baud_base(); - up->port.flags = old_serial_port[i].flags; - up->port.hub6 = old_serial_port[i].hub6; - up->port.membase = old_serial_port[i].iomem_base; - up->port.iotype = old_serial_port[i].io_type; - up->port.regshift = old_serial_port[i].iomem_reg_shift; - up->port.ops = &serial8250_pops; - } -} - -static void __init serial8250_register_ports(struct uart_driver *drv) -{ - int i; - - serial8250_isa_init_ports(); - - for (i = 0; i < UART_NR; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - - up->port.line = i; - up->port.ops = &serial8250_pops; - init_timer(&up->timer); - up->timer.function = serial8250_timeout; - - /* - * ALPHA_KLUDGE_MCR needs to be killed. - */ - up->mcr_mask = ~ALPHA_KLUDGE_MCR; - up->mcr_force = ALPHA_KLUDGE_MCR; - - uart_add_one_port(drv, &up->port); - } -} - -#ifdef CONFIG_SERIAL_AU1X00_CONSOLE - -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - -/* - * Wait for transmitter & holding register to empty - */ -static inline void wait_for_xmitr(struct uart_8250_port *up) -{ - unsigned int status, tmout = 10000; - - /* Wait up to 10ms for the character(s) to be sent. */ - do { - status = serial_in(up, UART_LSR); - - if (status & UART_LSR_BI) - up->lsr_break_flag = UART_LSR_BI; - - if (--tmout == 0) - break; - udelay(1); - } while ((status & BOTH_EMPTY) != BOTH_EMPTY); - - /* Wait up to 1s for flow control if necessary */ - if (up->port.flags & UPF_CONS_FLOW) { - tmout = 1000000; - while (--tmout && - ((serial_in(up, UART_MSR) & UART_MSR_CTS) == 0)) - udelay(1); - } -} - -static void au1x00_console_putchar(struct uart_port *port, int ch) -{ - struct uart_8250_port *up = (struct uart_8250_port *)port; - - wait_for_xmitr(up); - serial_out(up, UART_TX, ch); -} - -/* - * Print a string to the serial port trying not to disturb - * any possible real use of the port... - * - * The console_lock must be held when we get here. - */ -static void -serial8250_console_write(struct console *co, const char *s, unsigned int count) -{ - struct uart_8250_port *up = &serial8250_ports[co->index]; - unsigned int ier; - - /* - * First save the UER then disable the interrupts - */ - ier = serial_in(up, UART_IER); - serial_out(up, UART_IER, 0); - - uart_console_write(&up->port, s, count, au1x00_console_putchar); - - /* - * Finally, wait for transmitter to become empty - * and restore the IER - */ - wait_for_xmitr(up); - serial_out(up, UART_IER, ier); -} - -static int __init serial8250_console_setup(struct console *co, char *options) -{ - struct uart_port *port; - int baud = 9600; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - /* - * Check whether an invalid uart number has been specified, and - * if so, search for the first available port that does have - * console support. - */ - if (co->index >= UART_NR) - co->index = 0; - port = &serial8250_ports[co->index].port; - - /* - * Temporary fix. - */ - spin_lock_init(&port->lock); - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - - return uart_set_options(port, co, baud, parity, bits, flow); -} - -extern struct uart_driver serial8250_reg; -static struct console serial8250_console = { - .name = "ttyS", - .write = serial8250_console_write, - .device = uart_console_device, - .setup = serial8250_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &serial8250_reg, -}; - -static int __init serial8250_console_init(void) -{ - serial8250_isa_init_ports(); - register_console(&serial8250_console); - return 0; -} -console_initcall(serial8250_console_init); - -#define SERIAL8250_CONSOLE &serial8250_console -#else -#define SERIAL8250_CONSOLE NULL -#endif - -static struct uart_driver serial8250_reg = { - .owner = THIS_MODULE, - .driver_name = "serial", - .devfs_name = "tts/", - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, - .nr = UART_NR, - .cons = SERIAL8250_CONSOLE, -}; - -int __init early_serial_setup(struct uart_port *port) -{ - serial8250_isa_init_ports(); - serial8250_ports[port->line].port = *port; - serial8250_ports[port->line].port.ops = &serial8250_pops; - return 0; -} - -/** - * serial8250_suspend_port - suspend one serial port - * @line: serial line number - * @level: the level of port suspension, as per uart_suspend_port - * - * Suspend one serial port. - */ -void serial8250_suspend_port(int line) -{ - uart_suspend_port(&serial8250_reg, &serial8250_ports[line].port); -} - -/** - * serial8250_resume_port - resume one serial port - * @line: serial line number - * @level: the level of port resumption, as per uart_resume_port - * - * Resume one serial port. - */ -void serial8250_resume_port(int line) -{ - uart_resume_port(&serial8250_reg, &serial8250_ports[line].port); -} - -static int __init serial8250_init(void) -{ - int ret, i; - - printk(KERN_INFO "Serial: Au1x00 driver\n"); - - for (i = 0; i < NR_IRQS; i++) - spin_lock_init(&irq_lists[i].lock); - - ret = uart_register_driver(&serial8250_reg); - if (ret >= 0) - serial8250_register_ports(&serial8250_reg); - - return ret; -} - -static void __exit serial8250_exit(void) -{ - int i; - - for (i = 0; i < UART_NR; i++) - uart_remove_one_port(&serial8250_reg, &serial8250_ports[i].port); - - uart_unregister_driver(&serial8250_reg); -} - -module_init(serial8250_init); -module_exit(serial8250_exit); - -EXPORT_SYMBOL(serial8250_suspend_port); -EXPORT_SYMBOL(serial8250_resume_port); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Au1x00 serial driver\n"); diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c index b848b7d9441..3bdee64d1a9 100644 --- a/drivers/serial/serial_txx9.c +++ b/drivers/serial/serial_txx9.c @@ -483,7 +483,7 @@ static int serial_txx9_startup(struct uart_port *port) /* * Clear the FIFO buffers and disable them. - * (they will be reeanbled in set_termios()) + * (they will be reenabled in set_termios()) */ sio_set(up, TXX9_SIFCR, TXX9_SIFCR_TFRST | TXX9_SIFCR_RFRST | TXX9_SIFCR_FRSTE); diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index 9fe2283d91e..1c4396c2962 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -641,7 +641,7 @@ static int sunsu_startup(struct uart_port *port) /* * Clear the FIFO buffers and disable them. - * (they will be reeanbled in set_termios()) + * (they will be reenabled in set_termios()) */ if (uart_config[up->port.type].flags & UART_CLEAR_FIFO) { serial_outp(up, UART_FCR, UART_FCR_ENABLE_FIFO); diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c index 3c987f49f6b..e166fffea86 100644 --- a/drivers/telephony/phonedev.c +++ b/drivers/telephony/phonedev.c @@ -29,6 +29,7 @@ #include <linux/kmod.h> #include <linux/sem.h> #include <linux/devfs_fs_kernel.h> +#include <linux/mutex.h> #define PHONE_NUM_DEVICES 256 @@ -37,7 +38,7 @@ */ static struct phone_device *phone_device[PHONE_NUM_DEVICES]; -static DECLARE_MUTEX(phone_lock); +static DEFINE_MUTEX(phone_lock); /* * Open a phone device. @@ -48,19 +49,19 @@ static int phone_open(struct inode *inode, struct file *file) unsigned int minor = iminor(inode); int err = 0; struct phone_device *p; - struct file_operations *old_fops, *new_fops = NULL; + const struct file_operations *old_fops, *new_fops = NULL; if (minor >= PHONE_NUM_DEVICES) return -ENODEV; - down(&phone_lock); + mutex_lock(&phone_lock); p = phone_device[minor]; if (p) new_fops = fops_get(p->f_op); if (!new_fops) { - up(&phone_lock); + mutex_unlock(&phone_lock); request_module("char-major-%d-%d", PHONE_MAJOR, minor); - down(&phone_lock); + mutex_lock(&phone_lock); p = phone_device[minor]; if (p == NULL || (new_fops = fops_get(p->f_op)) == NULL) { @@ -78,7 +79,7 @@ static int phone_open(struct inode *inode, struct file *file) } fops_put(old_fops); end: - up(&phone_lock); + mutex_unlock(&phone_lock); return err; } @@ -100,18 +101,18 @@ int phone_register_device(struct phone_device *p, int unit) end = unit + 1; /* enter the loop at least one time */ } - down(&phone_lock); + mutex_lock(&phone_lock); for (i = base; i < end; i++) { if (phone_device[i] == NULL) { phone_device[i] = p; p->minor = i; devfs_mk_cdev(MKDEV(PHONE_MAJOR,i), S_IFCHR|S_IRUSR|S_IWUSR, "phone/%d", i); - up(&phone_lock); + mutex_unlock(&phone_lock); return 0; } } - up(&phone_lock); + mutex_unlock(&phone_lock); return -ENFILE; } @@ -121,12 +122,12 @@ int phone_register_device(struct phone_device *p, int unit) void phone_unregister_device(struct phone_device *pfd) { - down(&phone_lock); + mutex_lock(&phone_lock); if (phone_device[pfd->minor] != pfd) panic("phone: bad unregister"); devfs_remove("phone/%d", pfd->minor); phone_device[pfd->minor] = NULL; - up(&phone_lock); + mutex_unlock(&phone_lock); } diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index 37b13368c81..b263a54a13c 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -24,15 +24,15 @@ #include "usb.h" #define MAX_USB_MINORS 256 -static struct file_operations *usb_minors[MAX_USB_MINORS]; +static const struct file_operations *usb_minors[MAX_USB_MINORS]; static DEFINE_SPINLOCK(minor_lock); static int usb_open(struct inode * inode, struct file * file) { int minor = iminor(inode); - struct file_operations *c; + const struct file_operations *c; int err = -ENODEV; - struct file_operations *old_fops, *new_fops = NULL; + const struct file_operations *old_fops, *new_fops = NULL; spin_lock (&minor_lock); c = usb_minors[minor]; diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c index 4b55285de9a..fe0ed54fa0a 100644 --- a/drivers/usb/core/notify.c +++ b/drivers/usb/core/notify.c @@ -16,57 +16,7 @@ #include <linux/mutex.h> #include "usb.h" - -static struct notifier_block *usb_notifier_list; -static DEFINE_MUTEX(usb_notifier_lock); - -static void usb_notifier_chain_register(struct notifier_block **list, - struct notifier_block *n) -{ - mutex_lock(&usb_notifier_lock); - while (*list) { - if (n->priority > (*list)->priority) - break; - list = &((*list)->next); - } - n->next = *list; - *list = n; - mutex_unlock(&usb_notifier_lock); -} - -static void usb_notifier_chain_unregister(struct notifier_block **nl, - struct notifier_block *n) -{ - mutex_lock(&usb_notifier_lock); - while ((*nl)!=NULL) { - if ((*nl)==n) { - *nl = n->next; - goto exit; - } - nl=&((*nl)->next); - } -exit: - mutex_unlock(&usb_notifier_lock); -} - -static int usb_notifier_call_chain(struct notifier_block **n, - unsigned long val, void *v) -{ - int ret=NOTIFY_DONE; - struct notifier_block *nb = *n; - - mutex_lock(&usb_notifier_lock); - while (nb) { - ret = nb->notifier_call(nb,val,v); - if (ret&NOTIFY_STOP_MASK) { - goto exit; - } - nb = nb->next; - } -exit: - mutex_unlock(&usb_notifier_lock); - return ret; -} +static BLOCKING_NOTIFIER_HEAD(usb_notifier_list); /** * usb_register_notify - register a notifier callback whenever a usb change happens @@ -76,7 +26,7 @@ exit: */ void usb_register_notify(struct notifier_block *nb) { - usb_notifier_chain_register(&usb_notifier_list, nb); + blocking_notifier_chain_register(&usb_notifier_list, nb); } EXPORT_SYMBOL_GPL(usb_register_notify); @@ -89,27 +39,28 @@ EXPORT_SYMBOL_GPL(usb_register_notify); */ void usb_unregister_notify(struct notifier_block *nb) { - usb_notifier_chain_unregister(&usb_notifier_list, nb); + blocking_notifier_chain_unregister(&usb_notifier_list, nb); } EXPORT_SYMBOL_GPL(usb_unregister_notify); void usb_notify_add_device(struct usb_device *udev) { - usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev); + blocking_notifier_call_chain(&usb_notifier_list, USB_DEVICE_ADD, udev); } void usb_notify_remove_device(struct usb_device *udev) { - usb_notifier_call_chain(&usb_notifier_list, USB_DEVICE_REMOVE, udev); + blocking_notifier_call_chain(&usb_notifier_list, + USB_DEVICE_REMOVE, udev); } void usb_notify_add_bus(struct usb_bus *ubus) { - usb_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus); + blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_ADD, ubus); } void usb_notify_remove_bus(struct usb_bus *ubus) { - usb_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus); + blocking_notifier_call_chain(&usb_notifier_list, USB_BUS_REMOVE, ubus); } diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index b44cfda76b6..3f618ce6998 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -1581,7 +1581,7 @@ restart: static struct inode * gadgetfs_create_file (struct super_block *sb, char const *name, - void *data, struct file_operations *fops, + void *data, const struct file_operations *fops, struct dentry **dentry_p); static int activate_ep_files (struct dev_data *dev) @@ -1955,7 +1955,7 @@ module_param (default_perm, uint, 0644); static struct inode * gadgetfs_make_inode (struct super_block *sb, - void *data, struct file_operations *fops, + void *data, const struct file_operations *fops, int mode) { struct inode *inode = new_inode (sb); @@ -1979,7 +1979,7 @@ gadgetfs_make_inode (struct super_block *sb, */ static struct inode * gadgetfs_create_file (struct super_block *sb, char const *name, - void *data, struct file_operations *fops, + void *data, const struct file_operations *fops, struct dentry **dentry_p) { struct dentry *dentry; diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c index 372527a8359..682bf221566 100644 --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -158,7 +158,7 @@ static int ohci_s3c2410_hub_control ( "s3c2410_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n", hcd, typeReq, wValue, wIndex, buf, wLength); - /* if we are only an humble host without any special capabilites + /* if we are only an humble host without any special capabilities * process the request straight away and exit */ if (info == NULL) { diff --git a/drivers/usb/net/zaurus.c b/drivers/usb/net/zaurus.c index 9c5ab251370..f7ac9d6b985 100644 --- a/drivers/usb/net/zaurus.c +++ b/drivers/usb/net/zaurus.c @@ -217,7 +217,7 @@ static int blan_mdlm_bind(struct usbnet *dev, struct usb_interface *intf) * with devices that use it and those that don't. */ if ((detail->bDetailData[1] & ~0x02) != 0x01) { - /* bmDataCapabilites == 0 would be fine too, + /* bmDataCapabilities == 0 would be fine too, * but framing is minidriver-coupled for now. */ bad_detail: diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index fdebd60a325..22e9d696fdd 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -70,6 +70,22 @@ config FB_MACMODES depends on FB default n +config FB_FIRMWARE_EDID + bool "Enable firmware EDID" + depends on FB + default y + ---help--- + This enables access to the EDID transferred from the firmware. + On the i386, this is from the Video BIOS. Enable this if DDC/I2C + transfers do not work for your driver and if you are using + nvidiafb, i810fb or savagefb. + + In general, choosing Y for this option is safe. If you + experience extremely long delays while booting before you get + something on your display, try setting this to N. Matrox cards in + combination with certain motherboards and monitors are known to + suffer from this problem. + config FB_MODE_HELPERS bool "Enable Video Mode Handling Helpers" depends on FB @@ -1202,6 +1218,17 @@ config FB_AU1100 bool "Au1100 LCD Driver" depends on (FB = y) && EXPERIMENTAL && PCI && MIPS && MIPS_PB1100=y +config FB_AU1200 + bool "Au1200 LCD Driver" + depends on FB && MIPS && SOC_AU1200 + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + help + This is the framebuffer driver for the AMD Au1200 SOC. It can drive + various panels and CRTs by passing in kernel cmd line option + au1200fb:panel=<name>. + source "drivers/video/geode/Kconfig" config FB_FFB diff --git a/drivers/video/Makefile b/drivers/video/Makefile index aa434e725c0..cb90218515a 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -86,6 +86,7 @@ obj-$(CONFIG_FB_ASILIANT) += asiliantfb.o obj-$(CONFIG_FB_PXA) += pxafb.o obj-$(CONFIG_FB_W100) += w100fb.o obj-$(CONFIG_FB_AU1100) += au1100fb.o +obj-$(CONFIG_FB_AU1200) += au1200fb.o obj-$(CONFIG_FB_PMAG_AA) += pmag-aa-fb.o obj-$(CONFIG_FB_PMAG_BA) += pmag-ba-fb.o obj-$(CONFIG_FB_PMAGB_B) += pmagb-b-fb.o diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c index 76448d6ae89..98baecccb3f 100644 --- a/drivers/video/acornfb.c +++ b/drivers/video/acornfb.c @@ -1308,7 +1308,7 @@ static int __init acornfb_probe(struct platform_device *dev) /* * Try to select a suitable default mode */ - for (i = 0; i < sizeof(modedb) / sizeof(*modedb); i++) { + for (i = 0; i < ARRAY_SIZE(modedb); i++) { unsigned long hs; hs = modedb[i].refresh * @@ -1380,7 +1380,7 @@ static int __init acornfb_probe(struct platform_device *dev) */ free_unused_pages(PAGE_OFFSET + size, PAGE_OFFSET + MAX_SIZE); #endif - + fb_info.fix.smem_len = size; current_par.palette_size = VIDC_PALETTE_SIZE; @@ -1391,7 +1391,7 @@ static int __init acornfb_probe(struct platform_device *dev) */ do { rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb, - sizeof(modedb) / sizeof(*modedb), + ARRAY_SIZE(modedb), &acornfb_default_mode, DEFAULT_BPP); /* * If we found an exact match, all ok. @@ -1408,7 +1408,7 @@ static int __init acornfb_probe(struct platform_device *dev) break; rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb, - sizeof(modedb) / sizeof(*modedb), + ARRAY_SIZE(modedb), &acornfb_default_mode, DEFAULT_BPP); if (rc) break; diff --git a/drivers/video/asiliantfb.c b/drivers/video/asiliantfb.c index c924d81f797..29f9f0dfe3b 100644 --- a/drivers/video/asiliantfb.c +++ b/drivers/video/asiliantfb.c @@ -353,8 +353,6 @@ struct chips_init_reg { unsigned char data; }; -#define N_ELTS(x) (sizeof(x) / sizeof(x[0])) - static struct chips_init_reg chips_init_sr[] = { {0x00, 0x03}, /* Reset register */ @@ -460,22 +458,22 @@ static void __devinit chips_hw_init(struct fb_info *p) { int i; - for (i = 0; i < N_ELTS(chips_init_xr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_xr); ++i) write_xr(chips_init_xr[i].addr, chips_init_xr[i].data); write_xr(0x81, 0x12); write_xr(0x82, 0x08); write_xr(0x20, 0x00); - for (i = 0; i < N_ELTS(chips_init_sr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_sr); ++i) write_sr(chips_init_sr[i].addr, chips_init_sr[i].data); - for (i = 0; i < N_ELTS(chips_init_gr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_gr); ++i) write_gr(chips_init_gr[i].addr, chips_init_gr[i].data); - for (i = 0; i < N_ELTS(chips_init_ar); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_ar); ++i) write_ar(chips_init_ar[i].addr, chips_init_ar[i].data); /* Enable video output in attribute index register */ writeb(0x20, mmio_base + 0x780); - for (i = 0; i < N_ELTS(chips_init_cr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_cr); ++i) write_cr(chips_init_cr[i].addr, chips_init_cr[i].data); - for (i = 0; i < N_ELTS(chips_init_fr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_fr); ++i) write_fr(chips_init_fr[i].addr, chips_init_fr[i].data); } diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c index 620c9a934e0..821c6da8e42 100644 --- a/drivers/video/aty/aty128fb.c +++ b/drivers/video/aty/aty128fb.c @@ -1725,9 +1725,9 @@ static int __init aty128_init(struct pci_dev *pdev, const struct pci_device_id * strcpy(video_card, "Rage128 XX "); video_card[8] = ent->device >> 8; video_card[9] = ent->device & 0xFF; - + /* range check to make sure */ - if (ent->driver_data < (sizeof(r128_family)/sizeof(char *))) + if (ent->driver_data < ARRAY_SIZE(r128_family)) strncat(video_card, r128_family[ent->driver_data], sizeof(video_card)); printk(KERN_INFO "aty128fb: %s [chip rev 0x%x] ", video_card, chip_rev); diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c index 485be386a8f..e799fcca365 100644 --- a/drivers/video/aty/atyfb_base.c +++ b/drivers/video/aty/atyfb_base.c @@ -434,7 +434,7 @@ static int __devinit correct_chipset(struct atyfb_par *par) const char *name; int i; - for (i = sizeof(aty_chips) / sizeof(*aty_chips) - 1; i >= 0; i--) + for (i = ARRAY_SIZE(aty_chips) - 1; i >= 0; i--) if (par->pci_id == aty_chips[i].pci_id) break; @@ -2168,10 +2168,10 @@ static void __init aty_calc_mem_refresh(struct atyfb_par *par, int xclk) if (IS_XL(par->pci_id) || IS_MOBILITY(par->pci_id)) { refresh_tbl = ragexl_tbl; - size = sizeof(ragexl_tbl)/sizeof(int); + size = ARRAY_SIZE(ragexl_tbl); } else { refresh_tbl = ragepro_tbl; - size = sizeof(ragepro_tbl)/sizeof(int); + size = ARRAY_SIZE(ragepro_tbl); } for (i=0; i < size; i++) { @@ -2298,6 +2298,10 @@ static int __init aty_init(struct fb_info *info, const char *name) case CLK_ATI18818_1: par->pll_ops = &aty_pll_ati18818_1; break; + case CLK_IBMRGB514: + par->pll_ops = &aty_pll_ibm514; + break; +#if 0 /* dead code */ case CLK_STG1703: par->pll_ops = &aty_pll_stg1703; break; @@ -2307,9 +2311,7 @@ static int __init aty_init(struct fb_info *info, const char *name) case CLK_ATT20C408: par->pll_ops = &aty_pll_att20c408; break; - case CLK_IBMRGB514: - par->pll_ops = &aty_pll_ibm514; - break; +#endif default: PRINTKI("aty_init: CLK type not implemented yet!"); par->pll_ops = &aty_pll_unsupported; @@ -3397,7 +3399,7 @@ static int __devinit atyfb_pci_probe(struct pci_dev *pdev, const struct pci_devi struct atyfb_par *par; int i, rc = -ENOMEM; - for (i = sizeof(aty_chips) / sizeof(*aty_chips) - 1; i >= 0; i--) + for (i = ARRAY_SIZE(aty_chips); i >= 0; i--) if (pdev->device == aty_chips[i].pci_id) break; diff --git a/drivers/video/aty/mach64_gx.c b/drivers/video/aty/mach64_gx.c index 01fdff79483..2045639cb67 100644 --- a/drivers/video/aty/mach64_gx.c +++ b/drivers/video/aty/mach64_gx.c @@ -149,8 +149,7 @@ static int aty_var_to_pll_514(const struct fb_info *info, u32 vclk_per, }; int i; - for (i = 0; i < sizeof(RGB514_clocks) / sizeof(*RGB514_clocks); - i++) + for (i = 0; i < ARRAY_SIZE(RGB514_clocks); i++) if (vclk_per <= RGB514_clocks[i].limit) { pll->ibm514.m = RGB514_clocks[i].m; pll->ibm514.n = RGB514_clocks[i].n; diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c index c9f0c5a07e6..9a6b5b39b88 100644 --- a/drivers/video/aty/radeon_base.c +++ b/drivers/video/aty/radeon_base.c @@ -1067,7 +1067,7 @@ static int radeon_setcolreg (unsigned regno, unsigned red, unsigned green, if (regno > 255) - return 1; + return -EINVAL; red >>= 8; green >>= 8; @@ -1086,9 +1086,9 @@ static int radeon_setcolreg (unsigned regno, unsigned red, unsigned green, pindex = regno * 8; if (rinfo->depth == 16 && regno > 63) - return 1; + return -EINVAL; if (rinfo->depth == 15 && regno > 31) - return 1; + return -EINVAL; /* For 565, the green component is mixed one order * below diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c new file mode 100644 index 00000000000..b367de30b98 --- /dev/null +++ b/drivers/video/au1200fb.c @@ -0,0 +1,3844 @@ +/* + * BRIEF MODULE DESCRIPTION + * Au1200 LCD Driver. + * + * Copyright 2004-2005 AMD + * Author: AMD + * + * Based on: + * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device + * Created 28 Dec 1997 by Geert Uytterhoeven + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ctype.h> +#include <linux/dma-mapping.h> + +#include <asm/mach-au1x00/au1000.h> +#include "au1200fb.h" + +#ifdef CONFIG_PM +#include <asm/mach-au1x00/au1xxx_pm.h> +#endif + +#ifndef CONFIG_FB_AU1200_DEVS +#define CONFIG_FB_AU1200_DEVS 4 +#endif + +#define DRIVER_NAME "au1200fb" +#define DRIVER_DESC "LCD controller driver for AU1200 processors" + +#define DEBUG 1 + +#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg) +#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg) +#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg) + +#if DEBUG +#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg) +#else +#define print_dbg(f, arg...) do {} while (0) +#endif + + +#define AU1200_LCD_FB_IOCTL 0x46FF + +#define AU1200_LCD_SET_SCREEN 1 +#define AU1200_LCD_GET_SCREEN 2 +#define AU1200_LCD_SET_WINDOW 3 +#define AU1200_LCD_GET_WINDOW 4 +#define AU1200_LCD_SET_PANEL 5 +#define AU1200_LCD_GET_PANEL 6 + +#define SCREEN_SIZE (1<< 1) +#define SCREEN_BACKCOLOR (1<< 2) +#define SCREEN_BRIGHTNESS (1<< 3) +#define SCREEN_COLORKEY (1<< 4) +#define SCREEN_MASK (1<< 5) + +struct au1200_lcd_global_regs_t { + unsigned int flags; + unsigned int xsize; + unsigned int ysize; + unsigned int backcolor; + unsigned int brightness; + unsigned int colorkey; + unsigned int mask; + unsigned int panel_choice; + char panel_desc[80]; + +}; + +#define WIN_POSITION (1<< 0) +#define WIN_ALPHA_COLOR (1<< 1) +#define WIN_ALPHA_MODE (1<< 2) +#define WIN_PRIORITY (1<< 3) +#define WIN_CHANNEL (1<< 4) +#define WIN_BUFFER_FORMAT (1<< 5) +#define WIN_COLOR_ORDER (1<< 6) +#define WIN_PIXEL_ORDER (1<< 7) +#define WIN_SIZE (1<< 8) +#define WIN_COLORKEY_MODE (1<< 9) +#define WIN_DOUBLE_BUFFER_MODE (1<< 10) +#define WIN_RAM_ARRAY_MODE (1<< 11) +#define WIN_BUFFER_SCALE (1<< 12) +#define WIN_ENABLE (1<< 13) + +struct au1200_lcd_window_regs_t { + unsigned int flags; + unsigned int xpos; + unsigned int ypos; + unsigned int alpha_color; + unsigned int alpha_mode; + unsigned int priority; + unsigned int channel; + unsigned int buffer_format; + unsigned int color_order; + unsigned int pixel_order; + unsigned int xsize; + unsigned int ysize; + unsigned int colorkey_mode; + unsigned int double_buffer_mode; + unsigned int ram_array_mode; + unsigned int xscale; + unsigned int yscale; + unsigned int enable; +}; + + +struct au1200_lcd_iodata_t { + unsigned int subcmd; + struct au1200_lcd_global_regs_t global; + struct au1200_lcd_window_regs_t window; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11 +#else +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00 +#endif +#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565 + +/* Private, per-framebuffer management information (independent of the panel itself) */ +struct au1200fb_device { + struct fb_info fb_info; /* FB driver info record */ + + int plane; + unsigned char* fb_mem; /* FrameBuffer memory map */ + unsigned int fb_len; + dma_addr_t fb_phys; +}; + +static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS]; +/********************************************************************/ + +/* LCD controller restrictions */ +#define AU1200_LCD_MAX_XRES 1280 +#define AU1200_LCD_MAX_YRES 1024 +#define AU1200_LCD_MAX_BPP 32 +#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */ +#define AU1200_LCD_NBR_PALETTE_ENTRIES 256 + +/* Default number of visible screen buffer to allocate */ +#define AU1200FB_NBR_VIDEO_BUFFERS 1 + +/********************************************************************/ + +static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR; +static int window_index = 2; /* default is zero */ +static int panel_index = 2; /* default is zero */ +static struct window_settings *win; +static struct panel_settings *panel; +static int noblanking = 1; +static int nohwcursor = 0; + +struct window_settings { + unsigned char name[64]; + uint32 mode_backcolor; + uint32 mode_colorkey; + uint32 mode_colorkeymsk; + struct { + int xres; + int yres; + int xpos; + int ypos; + uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */ + uint32 mode_winenable; + } w[4]; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00 +#else +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01 +#endif + +extern int board_au1200fb_panel_init (void); +extern int board_au1200fb_panel_shutdown (void); + +#ifdef CONFIG_PM +int au1200fb_pm_callback(au1xxx_power_dev_t *dev, + au1xxx_request_t request, void *data); +au1xxx_power_dev_t *LCD_pm_dev; +#endif + +/* + * Default window configurations + */ +static struct window_settings windows[] = { + { /* Index 0 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 100, 100, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ LCD_WINENABLE_WEN1, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + + { /* Index 1 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 320, 240, 5, 5, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP | + LCD_WINCTRL1_PO_00, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 + | LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 200, 25, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + { /* Index 2 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP | + LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + /* Need VGA 640 @ 24bpp, @ 32bpp */ + /* Need VGA 800 @ 24bpp, @ 32bpp */ + /* Need VGA 1024 @ 24bpp, @ 32bpp */ +}; + +/* + * Controller configurations for various panels. + */ + +struct panel_settings +{ + const char name[25]; /* Full name <vendor>_<model> */ + + struct fb_monspecs monspecs; /* FB monitor specs */ + + /* panel timings */ + uint32 mode_screen; + uint32 mode_horztiming; + uint32 mode_verttiming; + uint32 mode_clkcontrol; + uint32 mode_pwmdiv; + uint32 mode_pwmhi; + uint32 mode_outmask; + uint32 mode_fifoctrl; + uint32 mode_toyclksrc; + uint32 mode_backlight; + uint32 mode_auxpll; + int (*device_init)(void); + int (*device_shutdown)(void); +#define Xres min_xres +#define Yres min_yres + u32 min_xres; /* Minimum horizontal resolution */ + u32 max_xres; /* Maximum horizontal resolution */ + u32 min_yres; /* Minimum vertical resolution */ + u32 max_yres; /* Maximum vertical resolution */ +}; + +/********************************************************************/ +/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */ + +/* List of panels known to work with the AU1200 LCD controller. + * To add a new panel, enter the same specifications as the + * Generic_TFT one, and MAKE SURE that it doesn't conflicts + * with the controller restrictions. Restrictions are: + * + * STN color panels: max_bpp <= 12 + * STN mono panels: max_bpp <= 4 + * TFT panels: max_bpp <= 16 + * max_xres <= 800 + * max_yres <= 600 + */ +static struct panel_settings known_lcd_panels[] = +{ + [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */ + .name = "QVGA_320x240", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = 0x00c4623b, + .mode_verttiming = 0x00502814, + .mode_clkcontrol = 0x00020002, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 320, 320, + 240, 240, + }, + + [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */ + .name = "VGA_640x480", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x13f9df80, + .mode_horztiming = 0x003c5859, + .mode_verttiming = 0x00741201, + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 640, 480, + 640, 480, + }, + + [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */ + .name = "SVGA_800x600", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x18fa5780, + .mode_horztiming = 0x00dc7e77, + .mode_verttiming = 0x00584805, + .mode_clkcontrol = 0x00020000, /* /2=48Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 800, 800, + 600, 600, + }, + + [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */ + .name = "XVGA_1024x768", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x007d0e57, + .mode_verttiming = 0x00740a01, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 6, /* 72MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 1024, 1024, + 768, 768, + }, + + [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */ + .name = "XVGA_1280x1024", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x27fbff80, + .mode_horztiming = 0x00cdb2c7, + .mode_verttiming = 0x00600002, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 10, /* 120MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 1280, 1280, + 1024, 1024, + }, + + [5] = { /* Samsung 1024x768 TFT */ + .name = "Samsung_1024x768_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x018cc677, + .mode_verttiming = 0x00241217, + .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */ + .mode_pwmhi = 0x03400000, /* SCB 0x0 */ + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 1024, 1024, + 768, 768, + }, + + [6] = { /* Toshiba 640x480 TFT */ + .name = "Toshiba_640x480_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(640) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HPW_N(96) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32), + .mode_clkcontrol = 0x00000000, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 640, 480, + 640, 480, + }, + + [7] = { /* Sharp 320x240 TFT */ + .name = "Sharp_320x240_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 12500, + .hfmax = 20000, + .vfmin = 38, + .vfmax = 81, + .dclkmin = 4500000, + .dclkmax = 6800000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = LCD_HORZTIMING_HPW_N(60) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5), + .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 320, 320, + 240, 240, + }, + + [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */ + .name = "Toppoly_TD070WGCB2", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(856) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HND2_N(43) | + LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114), + .mode_verttiming = LCD_VERTTIMING_VND2_N(20) | + LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4), + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 856, 856, + 480, 480, + }, +}; + +#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels)) + +/********************************************************************/ + +#ifdef CONFIG_PM +static int set_brightness(unsigned int brightness) +{ + unsigned int hi1, divider; + + /* limit brightness pwm duty to >= 30/1600 */ + if (brightness < 30) { + brightness = 30; + } + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + hi1 = (lcd->pwmhi >> 16) + 1; + hi1 = (((brightness & 0xFF) + 1) * divider >> 8); + lcd->pwmhi &= 0xFFFF; + lcd->pwmhi |= (hi1 << 16); + + return brightness; +} +#endif /* CONFIG_PM */ + +static int winbpp (unsigned int winctrl1) +{ + int bits = 0; + + /* how many bits are needed for each pixel format */ + switch (winctrl1 & LCD_WINCTRL1_FRM) { + case LCD_WINCTRL1_FRM_1BPP: + bits = 1; + break; + case LCD_WINCTRL1_FRM_2BPP: + bits = 2; + break; + case LCD_WINCTRL1_FRM_4BPP: + bits = 4; + break; + case LCD_WINCTRL1_FRM_8BPP: + bits = 8; + break; + case LCD_WINCTRL1_FRM_12BPP: + case LCD_WINCTRL1_FRM_16BPP655: + case LCD_WINCTRL1_FRM_16BPP565: + case LCD_WINCTRL1_FRM_16BPP556: + case LCD_WINCTRL1_FRM_16BPPI1555: + case LCD_WINCTRL1_FRM_16BPPI5551: + case LCD_WINCTRL1_FRM_16BPPA1555: + case LCD_WINCTRL1_FRM_16BPPA5551: + bits = 16; + break; + case LCD_WINCTRL1_FRM_24BPP: + case LCD_WINCTRL1_FRM_32BPP: + bits = 32; + break; + } + + return bits; +} + +static int fbinfo2index (struct fb_info *fb_info) +{ + int i; + + for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) { + if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info)) + return i; + } + printk("au1200fb: ERROR: fbinfo2index failed!\n"); + return -1; +} + +static int au1200_setlocation (struct au1200fb_device *fbdev, int plane, + int xpos, int ypos) +{ + uint32 winctrl0, winctrl1, winenable, fb_offset = 0; + int xsz, ysz; + + /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */ + + winctrl0 = lcd->window[plane].winctrl0; + winctrl1 = lcd->window[plane].winctrl1; + winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN); + winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY); + + /* Check for off-screen adjustments */ + xsz = win->w[plane].xres; + ysz = win->w[plane].yres; + if ((xpos + win->w[plane].xres) > panel->Xres) { + /* Off-screen to the right */ + xsz = panel->Xres - xpos; /* off by 1 ??? */ + /*printk("off screen right\n");*/ + } + + if ((ypos + win->w[plane].yres) > panel->Yres) { + /* Off-screen to the bottom */ + ysz = panel->Yres - ypos; /* off by 1 ??? */ + /*printk("off screen bottom\n");*/ + } + + if (xpos < 0) { + /* Off-screen to the left */ + xsz = win->w[plane].xres + xpos; + fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8); + xpos = 0; + /*printk("off screen left\n");*/ + } + + if (ypos < 0) { + /* Off-screen to the top */ + ysz = win->w[plane].yres + ypos; + /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */ + ypos = 0; + /*printk("off screen top\n");*/ + } + + /* record settings */ + win->w[plane].xpos = xpos; + win->w[plane].ypos = ypos; + + xsz -= 1; + ysz -= 1; + winctrl0 |= (xpos << 21); + winctrl0 |= (ypos << 10); + winctrl1 |= (xsz << 11); + winctrl1 |= (ysz << 0); + + /* Disable the window while making changes, then restore WINEN */ + winenable = lcd->winenable & (1 << plane); + au_sync(); + lcd->winenable &= ~(1 << plane); + lcd->window[plane].winctrl0 = winctrl0; + lcd->window[plane].winctrl1 = winctrl1; + lcd->window[plane].winbuf0 = + lcd->window[plane].winbuf1 = fbdev->fb_phys; + lcd->window[plane].winbufctrl = 0; /* select winbuf0 */ + lcd->winenable |= winenable; + au_sync(); + + return 0; +} + +static void au1200_setpanel (struct panel_settings *newpanel) +{ + /* + * Perform global setup/init of LCD controller + */ + uint32 winenable; + + /* Make sure all windows disabled */ + winenable = lcd->winenable; + lcd->winenable = 0; + au_sync(); + /* + * Ensure everything is disabled before reconfiguring + */ + if (lcd->screen & LCD_SCREEN_SEN) { + /* Wait for vertical sync period */ + lcd->intstatus = LCD_INT_SS; + while ((lcd->intstatus & LCD_INT_SS) == 0) { + au_sync(); + } + + lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/ + + do { + lcd->intstatus = lcd->intstatus; /*clear interrupts*/ + au_sync(); + /*wait for controller to shut down*/ + } while ((lcd->intstatus & LCD_INT_SD) == 0); + + /* Call shutdown of current panel (if up) */ + /* this must occur last, because if an external clock is driving + the controller, the clock cannot be turned off before first + shutting down the controller. + */ + if (panel->device_shutdown != NULL) + panel->device_shutdown(); + } + + /* Newpanel == NULL indicates a shutdown operation only */ + if (newpanel == NULL) + return; + + panel = newpanel; + + printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres); + + /* + * Setup clocking if internal LCD clock source (assumes sys_auxpll valid) + */ + if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT)) + { + uint32 sys_clksrc; + au_writel(panel->mode_auxpll, SYS_AUXPLL); + sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f; + sys_clksrc |= panel->mode_toyclksrc; + au_writel(sys_clksrc, SYS_CLKSRC); + } + + /* + * Configure panel timings + */ + lcd->screen = panel->mode_screen; + lcd->horztiming = panel->mode_horztiming; + lcd->verttiming = panel->mode_verttiming; + lcd->clkcontrol = panel->mode_clkcontrol; + lcd->pwmdiv = panel->mode_pwmdiv; + lcd->pwmhi = panel->mode_pwmhi; + lcd->outmask = panel->mode_outmask; + lcd->fifoctrl = panel->mode_fifoctrl; + au_sync(); + + /* fixme: Check window settings to make sure still valid + * for new geometry */ +#if 0 + au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos); + au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos); + au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos); + au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos); +#endif + lcd->winenable = winenable; + + /* + * Re-enable screen now that it is configured + */ + lcd->screen |= LCD_SCREEN_SEN; + au_sync(); + + /* Call init of panel */ + if (panel->device_init != NULL) panel->device_init(); + + /* FIX!!!! not appropriate on panel change!!! Global setup/init */ + lcd->intenable = 0; + lcd->intstatus = ~0; + lcd->backcolor = win->mode_backcolor; + + /* Setup Color Key - FIX!!! */ + lcd->colorkey = win->mode_colorkey; + lcd->colorkeymsk = win->mode_colorkeymsk; + + /* Setup HWCursor - FIX!!! Need to support this eventually */ + lcd->hwc.cursorctrl = 0; + lcd->hwc.cursorpos = 0; + lcd->hwc.cursorcolor0 = 0; + lcd->hwc.cursorcolor1 = 0; + lcd->hwc.cursorcolor2 = 0; + lcd->hwc.cursorcolor3 = 0; + + +#if 0 +#define D(X) printk("%25s: %08X\n", #X, X) + D(lcd->screen); + D(lcd->horztiming); + D(lcd->verttiming); + D(lcd->clkcontrol); + D(lcd->pwmdiv); + D(lcd->pwmhi); + D(lcd->outmask); + D(lcd->fifoctrl); + D(lcd->window[0].winctrl0); + D(lcd->window[0].winctrl1); + D(lcd->window[0].winctrl2); + D(lcd->window[0].winbuf0); + D(lcd->window[0].winbuf1); + D(lcd->window[0].winbufctrl); + D(lcd->window[1].winctrl0); + D(lcd->window[1].winctrl1); + D(lcd->window[1].winctrl2); + D(lcd->window[1].winbuf0); + D(lcd->window[1].winbuf1); + D(lcd->window[1].winbufctrl); + D(lcd->window[2].winctrl0); + D(lcd->window[2].winctrl1); + D(lcd->window[2].winctrl2); + D(lcd->window[2].winbuf0); + D(lcd->window[2].winbuf1); + D(lcd->window[2].winbufctrl); + D(lcd->window[3].winctrl0); + D(lcd->window[3].winctrl1); + D(lcd->window[3].winctrl2); + D(lcd->window[3].winbuf0); + D(lcd->window[3].winbuf1); + D(lcd->window[3].winbufctrl); + D(lcd->winenable); + D(lcd->intenable); + D(lcd->intstatus); + D(lcd->backcolor); + D(lcd->winenable); + D(lcd->colorkey); + D(lcd->colorkeymsk); + D(lcd->hwc.cursorctrl); + D(lcd->hwc.cursorpos); + D(lcd->hwc.cursorcolor0); + D(lcd->hwc.cursorcolor1); + D(lcd->hwc.cursorcolor2); + D(lcd->hwc.cursorcolor3); +#endif +} + +static void au1200_setmode(struct au1200fb_device *fbdev) +{ + int plane = fbdev->plane; + /* Window/plane setup */ + lcd->window[plane].winctrl1 = ( 0 + | LCD_WINCTRL1_PRI_N(plane) + | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */ + ) ; + + au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos); + + lcd->window[plane].winctrl2 = ( 0 + | LCD_WINCTRL2_CKMODE_00 + | LCD_WINCTRL2_DBM + | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length) + | LCD_WINCTRL2_SCX_1 + | LCD_WINCTRL2_SCY_1 + ) ; + lcd->winenable |= win->w[plane].mode_winenable; + au_sync(); +} + + +/* Inline helpers */ + +/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ +/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ + +#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN) + +/* Bitfields format supported by the controller. */ +static struct fb_bitfield rgb_bitfields[][4] = { + /* Red, Green, Blue, Transp */ + [LCD_WINCTRL1_FRM_16BPP655 >> 25] = + { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP565 >> 25] = + { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP556 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, + + [LCD_WINCTRL1_FRM_24BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_32BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } }, +}; + +/*-------------------------------------------------------------------------*/ + +/* Helpers */ + +static void au1200fb_update_fbinfo(struct fb_info *fbi) +{ + /* FIX!!!! This also needs to take the window pixel format into account!!! */ + + /* Update var-dependent FB info */ + if (panel_is_color(panel)) { + if (fbi->var.bits_per_pixel <= 8) { + /* palettized */ + fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR; + fbi->fix.line_length = fbi->var.xres_virtual / + (8/fbi->var.bits_per_pixel); + } else { + /* non-palettized */ + fbi->fix.visual = FB_VISUAL_TRUECOLOR; + fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8); + } + } else { + /* mono FIX!!! mono 8 and 4 bits */ + fbi->fix.visual = FB_VISUAL_MONO10; + fbi->fix.line_length = fbi->var.xres_virtual / 8; + } + + fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual; + print_dbg("line length: %d\n", fbi->fix.line_length); + print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel); +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 framebuffer driver */ + +/* fb_check_var + * Validate var settings with hardware restrictions and modify it if necessary + */ +static int au1200fb_fb_check_var(struct fb_var_screeninfo *var, + struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi; + u32 pixclock; + int screen_size, plane; + + plane = fbdev->plane; + + /* Make sure that the mode respect all LCD controller and + * panel restrictions. */ + var->xres = win->w[plane].xres; + var->yres = win->w[plane].yres; + + /* No need for virtual resolution support */ + var->xres_virtual = var->xres; + var->yres_virtual = var->yres; + + var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1); + + screen_size = var->xres_virtual * var->yres_virtual; + if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8); + else screen_size /= (8/var->bits_per_pixel); + + if (fbdev->fb_len < screen_size) + return -EINVAL; /* Virtual screen is to big, abort */ + + /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */ + /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel + * clock can only be obtain by dividing this value by an even integer. + * Fallback to a slower pixel clock if necessary. */ + pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin); + pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2)); + + if (AU1200_LCD_MAX_CLK % pixclock) { + int diff = AU1200_LCD_MAX_CLK % pixclock; + pixclock -= diff; + } + + var->pixclock = KHZ2PICOS(pixclock/1000); +#if 0 + if (!panel_is_active(panel)) { + int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1; + + if (!panel_is_color(panel) + && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) { + /* STN 8bit mono panel support is up to 6MHz pixclock */ + var->pixclock = KHZ2PICOS(6000); + } else if (!pcd) { + /* Other STN panel support is up to 12MHz */ + var->pixclock = KHZ2PICOS(12000); + } + } +#endif + /* Set bitfield accordingly */ + switch (var->bits_per_pixel) { + case 16: + { + /* 16bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + + case 32: + { + /* 32bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + default: + print_dbg("Unsupported depth %dbpp", var->bits_per_pixel); + return -EINVAL; + } + + return 0; +} + +/* fb_set_par + * Set hardware with var settings. This will enable the controller with a + * specific mode, normally validated with the fb_check_var method + */ +static int au1200fb_fb_set_par(struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi; + + au1200fb_update_fbinfo(fbi); + au1200_setmode(fbdev); + + return 0; +} + +/* fb_setcolreg + * Set color in LCD palette. + */ +static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, struct fb_info *fbi) +{ + volatile u32 *palette = lcd->palette; + u32 value; + + if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1)) + return -EINVAL; + + if (fbi->var.grayscale) { + /* Convert color to grayscale */ + red = green = blue = + (19595 * red + 38470 * green + 7471 * blue) >> 16; + } + + if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { + /* Place color in the pseudopalette */ + if (regno > 16) + return -EINVAL; + + palette = (u32*) fbi->pseudo_palette; + + red >>= (16 - fbi->var.red.length); + green >>= (16 - fbi->var.green.length); + blue >>= (16 - fbi->var.blue.length); + + value = (red << fbi->var.red.offset) | + (green << fbi->var.green.offset)| + (blue << fbi->var.blue.offset); + value &= 0xFFFF; + + } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) { + /* COLOR TFT PALLETTIZED (use RGB 565) */ + value = (red & 0xF800)|((green >> 5) & + 0x07E0)|((blue >> 11) & 0x001F); + value &= 0xFFFF; + + } else if (0 /*panel_is_color(fbdev->panel)*/) { + /* COLOR STN MODE */ + value = 0x1234; + value &= 0xFFF; + } else { + /* MONOCHROME MODE */ + value = (green >> 12) & 0x000F; + value &= 0xF; + } + + palette[regno] = value; + + return 0; +} + +/* fb_blank + * Blank the screen. Depending on the mode, the screen will be + * activated with the backlight color, or desactivated + */ +static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi) +{ + /* Short-circuit screen blanking */ + if (noblanking) + return 0; + + switch (blank_mode) { + + case FB_BLANK_UNBLANK: + case FB_BLANK_NORMAL: + /* printk("turn on panel\n"); */ + au1200_setpanel(panel); + break; + case FB_BLANK_VSYNC_SUSPEND: + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_POWERDOWN: + /* printk("turn off panel\n"); */ + au1200_setpanel(NULL); + break; + default: + break; + + } + + /* FB_BLANK_NORMAL is a soft blank */ + return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0; +} + +/* fb_mmap + * Map video memory in user space. We don't use the generic fb_mmap + * method mainly to allow the use of the TLB streaming flag (CCA=6) + */ +static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) + +{ + unsigned int len; + unsigned long start=0, off; + struct au1200fb_device *fbdev = (struct au1200fb_device *) info; + +#ifdef CONFIG_PM + au1xxx_pm_access(LCD_pm_dev); +#endif + + if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { + return -EINVAL; + } + + start = fbdev->fb_phys & PAGE_MASK; + len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); + + off = vma->vm_pgoff << PAGE_SHIFT; + + if ((vma->vm_end - vma->vm_start + off) > len) { + return -EINVAL; + } + + off += start; + vma->vm_pgoff = off >> PAGE_SHIFT; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */ + + vma->vm_flags |= VM_IO; + + return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, + vma->vm_page_prot); + + return 0; +} + +static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + + unsigned int hi1, divider; + + /* SCREEN_SIZE: user cannot reset size, must switch panel choice */ + + if (pdata->flags & SCREEN_BACKCOLOR) + lcd->backcolor = pdata->backcolor; + + if (pdata->flags & SCREEN_BRIGHTNESS) { + + // limit brightness pwm duty to >= 30/1600 + if (pdata->brightness < 30) { + pdata->brightness = 30; + } + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + hi1 = (lcd->pwmhi >> 16) + 1; + hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8); + lcd->pwmhi &= 0xFFFF; + lcd->pwmhi |= (hi1 << 16); + } + + if (pdata->flags & SCREEN_COLORKEY) + lcd->colorkey = pdata->colorkey; + + if (pdata->flags & SCREEN_MASK) + lcd->colorkeymsk = pdata->mask; + au_sync(); +} + +static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + unsigned int hi1, divider; + + pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1; + pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1; + + pdata->backcolor = lcd->backcolor; + pdata->colorkey = lcd->colorkey; + pdata->mask = lcd->colorkeymsk; + + // brightness + hi1 = (lcd->pwmhi >> 16) + 1; + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + pdata->brightness = ((hi1 << 8) / divider) - 1; + au_sync(); +} + +static void set_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + unsigned int val, bpp; + + /* Window control register 0 */ + if (pdata->flags & WIN_POSITION) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX | + LCD_WINCTRL0_OY); + val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX); + val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_COLOR) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A); + val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_MODE) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN); + val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN); + lcd->window[plane].winctrl0 = val; + } + + /* Window control register 1 */ + if (pdata->flags & WIN_PRIORITY) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI); + val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_CHANNEL) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE); + val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_BUFFER_FORMAT) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM); + val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_COLOR_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO); + val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_PIXEL_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO); + val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_SIZE) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX | + LCD_WINCTRL1_SZY); + val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX); + val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY); + lcd->window[plane].winctrl1 = val; + /* program buffer line width */ + bpp = winbpp(val) / 8; + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX); + val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX); + lcd->window[plane].winctrl2 = val; + } + + /* Window control register 2 */ + if (pdata->flags & WIN_COLORKEY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE); + val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM); + val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_RAM_ARRAY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM); + val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM); + lcd->window[plane].winctrl2 = val; + } + + /* Buffer line width programmed with WIN_SIZE */ + + if (pdata->flags & WIN_BUFFER_SCALE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX | + LCD_WINCTRL2_SCY); + val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX); + val |= ((pdata->ysize) & LCD_WINCTRL2_SCY); + lcd->window[plane].winctrl2 = val; + } + + if (pdata->flags & WIN_ENABLE) { + val = lcd->winenable; + val &= ~(1<<plane); + val |= (pdata->enable & 1) << plane; + lcd->winenable = val; + } + au_sync(); +} + +static void get_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + /* Window control register 0 */ + pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21; + pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10; + pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2; + pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1; + + /* Window control register 1 */ + pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30; + pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29; + pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25; + pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24; + pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22; + pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1; + pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1; + + /* Window control register 2 */ + pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24; + pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23; + pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21; + + pdata->enable = (lcd->winenable >> plane) & 1; + au_sync(); +} + +static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + int plane; + int val; + +#ifdef CONFIG_PM + au1xxx_pm_access(LCD_pm_dev); +#endif + + plane = fbinfo2index(info); + print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane); + + if (cmd == AU1200_LCD_FB_IOCTL) { + struct au1200_lcd_iodata_t iodata; + + if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata))) + return -EFAULT; + + print_dbg("FB IOCTL called\n"); + + switch (iodata.subcmd) { + case AU1200_LCD_SET_SCREEN: + print_dbg("AU1200_LCD_SET_SCREEN\n"); + set_global(cmd, &iodata.global); + break; + + case AU1200_LCD_GET_SCREEN: + print_dbg("AU1200_LCD_GET_SCREEN\n"); + get_global(cmd, &iodata.global); + break; + + case AU1200_LCD_SET_WINDOW: + print_dbg("AU1200_LCD_SET_WINDOW\n"); + set_window(plane, &iodata.window); + break; + + case AU1200_LCD_GET_WINDOW: + print_dbg("AU1200_LCD_GET_WINDOW\n"); + get_window(plane, &iodata.window); + break; + + case AU1200_LCD_SET_PANEL: + print_dbg("AU1200_LCD_SET_PANEL\n"); + if ((iodata.global.panel_choice >= 0) && + (iodata.global.panel_choice < + NUM_PANELS)) + { + struct panel_settings *newpanel; + panel_index = iodata.global.panel_choice; + newpanel = &known_lcd_panels[panel_index]; + au1200_setpanel(newpanel); + } + break; + + case AU1200_LCD_GET_PANEL: + print_dbg("AU1200_LCD_GET_PANEL\n"); + iodata.global.panel_choice = panel_index; + break; + + default: + return -EINVAL; + } + + val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata)); + if (val) { + print_dbg("error: could not copy %d bytes\n", val); + return -EFAULT; + } + } + + return 0; +} + + +static struct fb_ops au1200fb_fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = au1200fb_fb_check_var, + .fb_set_par = au1200fb_fb_set_par, + .fb_setcolreg = au1200fb_fb_setcolreg, + .fb_blank = au1200fb_fb_blank, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_sync = NULL, + .fb_ioctl = au1200fb_ioctl, + .fb_mmap = au1200fb_fb_mmap, +}; + +/*-------------------------------------------------------------------------*/ + +static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id, struct pt_regs *regs) +{ + /* Nothing to do for now, just clear any pending interrupt */ + lcd->intstatus = lcd->intstatus; + au_sync(); + + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 LCD device probe helpers */ + +static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev) +{ + struct fb_info *fbi = &fbdev->fb_info; + int bpp; + + memset(fbi, 0, sizeof(struct fb_info)); + fbi->fbops = &au1200fb_fb_ops; + + bpp = winbpp(win->w[fbdev->plane].mode_winctrl1); + + /* Copy monitor specs from panel data */ + /* fixme: we're setting up LCD controller windows, so these dont give a + damn as to what the monitor specs are (the panel itself does, but that + isnt done here...so maybe need a generic catchall monitor setting??? */ + memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs)); + + /* We first try the user mode passed in argument. If that failed, + * or if no one has been specified, we default to the first mode of the + * panel list. Note that after this call, var data will be set */ + if (!fb_find_mode(&fbi->var, + fbi, + NULL, /* drv_info.opt_mode, */ + fbi->monspecs.modedb, + fbi->monspecs.modedb_len, + fbi->monspecs.modedb, + bpp)) { + + print_err("Cannot find valid mode for panel %s", panel->name); + return -EFAULT; + } + + fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL); + if (!fbi->pseudo_palette) { + return -ENOMEM; + } + memset(fbi->pseudo_palette, 0, sizeof(u32) * 16); + + if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { + print_err("Fail to allocate colormap (%d entries)", + AU1200_LCD_NBR_PALETTE_ENTRIES); + kfree(fbi->pseudo_palette); + return -EFAULT; + } + + strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id)); + fbi->fix.smem_start = fbdev->fb_phys; + fbi->fix.smem_len = fbdev->fb_len; + fbi->fix.type = FB_TYPE_PACKED_PIXELS; + fbi->fix.xpanstep = 0; + fbi->fix.ypanstep = 0; + fbi->fix.mmio_start = 0; + fbi->fix.mmio_len = 0; + fbi->fix.accel = FB_ACCEL_NONE; + + fbi->screen_base = (char __iomem *) fbdev->fb_mem; + + au1200fb_update_fbinfo(fbi); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 LCD controller device driver */ + +static int au1200fb_drv_probe(struct device *dev) +{ + struct au1200fb_device *fbdev; + unsigned long page; + int bpp, plane, ret; + + if (!dev) + return -EINVAL; + + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) { + bpp = winbpp(win->w[plane].mode_winctrl1); + if (win->w[plane].xres == 0) + win->w[plane].xres = panel->Xres; + if (win->w[plane].yres == 0) + win->w[plane].yres = panel->Yres; + + fbdev = &_au1200fb_devices[plane]; + memset(fbdev, 0, sizeof(struct au1200fb_device)); + fbdev->plane = plane; + + /* Allocate the framebuffer to the maximum screen size */ + fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8; + + fbdev->fb_mem = dma_alloc_noncoherent(dev, + PAGE_ALIGN(fbdev->fb_len), + &fbdev->fb_phys, GFP_KERNEL); + if (!fbdev->fb_mem) { + print_err("fail to allocate frambuffer (size: %dK))", + fbdev->fb_len / 1024); + return -ENOMEM; + } + + /* + * Set page reserved so that mmap will work. This is necessary + * since we'll be remapping normal memory. + */ + for (page = (unsigned long)fbdev->fb_phys; + page < PAGE_ALIGN((unsigned long)fbdev->fb_phys + + fbdev->fb_len); + page += PAGE_SIZE) { + SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */ + } + print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); + print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); + + /* Init FB data */ + if ((ret = au1200fb_init_fbinfo(fbdev)) < 0) + goto failed; + + /* Register new framebuffer */ + if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) { + print_err("cannot register new framebuffer"); + goto failed; + } + + au1200fb_fb_set_par(&fbdev->fb_info); + +#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) + if (plane == 0) + if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) { + /* Start display and show logo on boot */ + fb_set_cmap(&fbdev->fb_info.cmap, + &fbdev->fb_info); + + fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR); + } +#endif + } + + /* Now hook interrupt too */ + if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq, + SA_INTERRUPT | SA_SHIRQ, "lcd", (void *)dev)) < 0) { + print_err("fail to request interrupt line %d (err: %d)", + AU1200_LCD_INT, ret); + goto failed; + } + + return 0; + +failed: + /* NOTE: This only does the current plane/window that failed; others are still active */ + if (fbdev->fb_mem) + dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len), + fbdev->fb_mem, fbdev->fb_phys); + if (fbdev->fb_info.cmap.len != 0) + fb_dealloc_cmap(&fbdev->fb_info.cmap); + if (fbdev->fb_info.pseudo_palette) + kfree(fbdev->fb_info.pseudo_palette); + if (plane == 0) + free_irq(AU1200_LCD_INT, (void*)dev); + return ret; +} + +static int au1200fb_drv_remove(struct device *dev) +{ + struct au1200fb_device *fbdev; + int plane; + + if (!dev) + return -ENODEV; + + /* Turn off the panel */ + au1200_setpanel(NULL); + + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) + { + fbdev = &_au1200fb_devices[plane]; + + /* Clean up all probe data */ + unregister_framebuffer(&fbdev->fb_info); + if (fbdev->fb_mem) + dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len), + fbdev->fb_mem, fbdev->fb_phys); + if (fbdev->fb_info.cmap.len != 0) + fb_dealloc_cmap(&fbdev->fb_info.cmap); + if (fbdev->fb_info.pseudo_palette) + kfree(fbdev->fb_info.pseudo_palette); + } + + free_irq(AU1200_LCD_INT, (void *)dev); + + return 0; +} + +#ifdef CONFIG_PM +static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level) +{ + /* TODO */ + return 0; +} + +static int au1200fb_drv_resume(struct device *dev, u32 level) +{ + /* TODO */ + return 0; +} +#endif /* CONFIG_PM */ + +static struct device_driver au1200fb_driver = { + .name = "au1200-lcd", + .bus = &platform_bus_type, + .probe = au1200fb_drv_probe, + .remove = au1200fb_drv_remove, +#ifdef CONFIG_PM + .suspend = au1200fb_drv_suspend, + .resume = au1200fb_drv_resume, +#endif +}; + +/*-------------------------------------------------------------------------*/ + +/* Kernel driver */ + +static void au1200fb_setup(void) +{ + char* options = NULL; + char* this_opt; + int num_panels = ARRAY_SIZE(known_lcd_panels); + int panel_idx = -1; + + fb_get_options(DRIVER_NAME, &options); + + if (options) { + while ((this_opt = strsep(&options,",")) != NULL) { + /* Panel option - can be panel name, + * "bs" for board-switch, or number/index */ + if (!strncmp(this_opt, "panel:", 6)) { + int i; + long int li; + char *endptr; + this_opt += 6; + /* First check for index, which allows + * to short circuit this mess */ + li = simple_strtol(this_opt, &endptr, 0); + if (*endptr == '\0') { + panel_idx = (int)li; + } + else if (strcmp(this_opt, "bs") == 0) { + extern int board_au1200fb_panel(void); + panel_idx = board_au1200fb_panel(); + } + + else + for (i = 0; i < num_panels; i++) { + if (!strcmp(this_opt, known_lcd_panels[i].name)) { + panel_idx = i; + break; + } + } + + if ((panel_idx < 0) || (panel_idx >= num_panels)) { + print_warn("Panel %s not supported!", this_opt); + } + else + panel_index = panel_idx; + } + + else if (strncmp(this_opt, "nohwcursor", 10) == 0) { + nohwcursor = 1; + } + + /* Unsupported option */ + else { + print_warn("Unsupported option \"%s\"", this_opt); + } + } + } +} + +#ifdef CONFIG_PM +static int au1200fb_pm_callback(au1xxx_power_dev_t *dev, + au1xxx_request_t request, void *data) { + int retval = -1; + unsigned int d = 0; + unsigned int brightness = 0; + + if (request == AU1XXX_PM_SLEEP) { + board_au1200fb_panel_shutdown(); + } + else if (request == AU1XXX_PM_WAKEUP) { + if(dev->prev_state == SLEEP_STATE) + { + int plane; + au1200_setpanel(panel); + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) { + struct au1200fb_device *fbdev; + fbdev = &_au1200fb_devices[plane]; + au1200fb_fb_set_par(&fbdev->fb_info); + } + } + + d = *((unsigned int*)data); + if(d <=10) brightness = 26; + else if(d<=20) brightness = 51; + else if(d<=30) brightness = 77; + else if(d<=40) brightness = 102; + else if(d<=50) brightness = 128; + else if(d<=60) brightness = 153; + else if(d<=70) brightness = 179; + else if(d<=80) brightness = 204; + else if(d<=90) brightness = 230; + else brightness = 255; + set_brightness(brightness); + } else if (request == AU1XXX_PM_GETSTATUS) { + return dev->cur_state; + } else if (request == AU1XXX_PM_ACCESS) { + if (dev->cur_state != SLEEP_STATE) + return retval; + else { + au1200_setpanel(panel); + } + } else if (request == AU1XXX_PM_IDLE) { + } else if (request == AU1XXX_PM_CLEANUP) { + } + + return retval; +} +#endif + +static int __init au1200fb_init(void) +{ + print_info("" DRIVER_DESC ""); + + /* Setup driver with options */ + au1200fb_setup(); + + /* Point to the panel selected */ + panel = &known_lcd_panels[panel_index]; + win = &windows[window_index]; + + printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name); + printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name); + + /* Kickstart the panel, the framebuffers/windows come soon enough */ + au1200_setpanel(panel); + + #ifdef CONFIG_PM + LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL); + if ( LCD_pm_dev == NULL) + printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n"); + else + printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n"); + #endif + + return driver_register(&au1200fb_driver); +} + +static void __exit au1200fb_cleanup(void) +{ + driver_unregister(&au1200fb_driver); +} + +module_init(au1200fb_init); +module_exit(au1200fb_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +/* + * BRIEF MODULE DESCRIPTION + * Au1200 LCD Driver. + * + * Copyright 2004-2005 AMD + * Author: AMD + * + * Based on: + * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device + * Created 28 Dec 1997 by Geert Uytterhoeven + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/ctype.h> +#include <linux/dma-mapping.h> + +#include <asm/mach-au1x00/au1000.h> +#include "au1200fb.h" + +#ifdef CONFIG_PM +#include <asm/mach-au1x00/au1xxx_pm.h> +#endif + +#ifndef CONFIG_FB_AU1200_DEVS +#define CONFIG_FB_AU1200_DEVS 4 +#endif + +#define DRIVER_NAME "au1200fb" +#define DRIVER_DESC "LCD controller driver for AU1200 processors" + +#define DEBUG 1 + +#define print_err(f, arg...) printk(KERN_ERR DRIVER_NAME ": " f "\n", ## arg) +#define print_warn(f, arg...) printk(KERN_WARNING DRIVER_NAME ": " f "\n", ## arg) +#define print_info(f, arg...) printk(KERN_INFO DRIVER_NAME ": " f "\n", ## arg) + +#if DEBUG +#define print_dbg(f, arg...) printk(KERN_DEBUG __FILE__ ": " f "\n", ## arg) +#else +#define print_dbg(f, arg...) do {} while (0) +#endif + + +#define AU1200_LCD_FB_IOCTL 0x46FF + +#define AU1200_LCD_SET_SCREEN 1 +#define AU1200_LCD_GET_SCREEN 2 +#define AU1200_LCD_SET_WINDOW 3 +#define AU1200_LCD_GET_WINDOW 4 +#define AU1200_LCD_SET_PANEL 5 +#define AU1200_LCD_GET_PANEL 6 + +#define SCREEN_SIZE (1<< 1) +#define SCREEN_BACKCOLOR (1<< 2) +#define SCREEN_BRIGHTNESS (1<< 3) +#define SCREEN_COLORKEY (1<< 4) +#define SCREEN_MASK (1<< 5) + +struct au1200_lcd_global_regs_t { + unsigned int flags; + unsigned int xsize; + unsigned int ysize; + unsigned int backcolor; + unsigned int brightness; + unsigned int colorkey; + unsigned int mask; + unsigned int panel_choice; + char panel_desc[80]; + +}; + +#define WIN_POSITION (1<< 0) +#define WIN_ALPHA_COLOR (1<< 1) +#define WIN_ALPHA_MODE (1<< 2) +#define WIN_PRIORITY (1<< 3) +#define WIN_CHANNEL (1<< 4) +#define WIN_BUFFER_FORMAT (1<< 5) +#define WIN_COLOR_ORDER (1<< 6) +#define WIN_PIXEL_ORDER (1<< 7) +#define WIN_SIZE (1<< 8) +#define WIN_COLORKEY_MODE (1<< 9) +#define WIN_DOUBLE_BUFFER_MODE (1<< 10) +#define WIN_RAM_ARRAY_MODE (1<< 11) +#define WIN_BUFFER_SCALE (1<< 12) +#define WIN_ENABLE (1<< 13) + +struct au1200_lcd_window_regs_t { + unsigned int flags; + unsigned int xpos; + unsigned int ypos; + unsigned int alpha_color; + unsigned int alpha_mode; + unsigned int priority; + unsigned int channel; + unsigned int buffer_format; + unsigned int color_order; + unsigned int pixel_order; + unsigned int xsize; + unsigned int ysize; + unsigned int colorkey_mode; + unsigned int double_buffer_mode; + unsigned int ram_array_mode; + unsigned int xscale; + unsigned int yscale; + unsigned int enable; +}; + + +struct au1200_lcd_iodata_t { + unsigned int subcmd; + struct au1200_lcd_global_regs_t global; + struct au1200_lcd_window_regs_t window; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_11 +#else +#define LCD_CONTROL_DEFAULT_PO LCD_CONTROL_PO_00 +#endif +#define LCD_CONTROL_DEFAULT_SBPPF LCD_CONTROL_SBPPF_565 + +/* Private, per-framebuffer management information (independent of the panel itself) */ +struct au1200fb_device { + struct fb_info fb_info; /* FB driver info record */ + + int plane; + unsigned char* fb_mem; /* FrameBuffer memory map */ + unsigned int fb_len; + dma_addr_t fb_phys; +}; + +static struct au1200fb_device _au1200fb_devices[CONFIG_FB_AU1200_DEVS]; +/********************************************************************/ + +/* LCD controller restrictions */ +#define AU1200_LCD_MAX_XRES 1280 +#define AU1200_LCD_MAX_YRES 1024 +#define AU1200_LCD_MAX_BPP 32 +#define AU1200_LCD_MAX_CLK 96000000 /* fixme: this needs to go away ? */ +#define AU1200_LCD_NBR_PALETTE_ENTRIES 256 + +/* Default number of visible screen buffer to allocate */ +#define AU1200FB_NBR_VIDEO_BUFFERS 1 + +/********************************************************************/ + +static struct au1200_lcd *lcd = (struct au1200_lcd *) AU1200_LCD_ADDR; +static int window_index = 2; /* default is zero */ +static int panel_index = 2; /* default is zero */ +static struct window_settings *win; +static struct panel_settings *panel; +static int noblanking = 1; +static int nohwcursor = 0; + +struct window_settings { + unsigned char name[64]; + uint32 mode_backcolor; + uint32 mode_colorkey; + uint32 mode_colorkeymsk; + struct { + int xres; + int yres; + int xpos; + int ypos; + uint32 mode_winctrl1; /* winctrl1[FRM,CCO,PO,PIPE] */ + uint32 mode_winenable; + } w[4]; +}; + +#if defined(__BIG_ENDIAN) +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_00 +#else +#define LCD_WINCTRL1_PO_16BPP LCD_WINCTRL1_PO_01 +#endif + +extern int board_au1200fb_panel_init (void); +extern int board_au1200fb_panel_shutdown (void); + +#ifdef CONFIG_PM +int au1200fb_pm_callback(au1xxx_power_dev_t *dev, + au1xxx_request_t request, void *data); +au1xxx_power_dev_t *LCD_pm_dev; +#endif + +/* + * Default window configurations + */ +static struct window_settings windows[] = { + { /* Index 0 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 100, 100, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ LCD_WINENABLE_WEN1, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + + { /* Index 1 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 320, 240, 5, 5, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_24BPP | + LCD_WINCTRL1_PO_00, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 + | LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 100, 100, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 200, 25, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + { /* Index 2 */ + "0-FS gfx, 1-video, 2-ovly gfx, 3-ovly gfx", + /* mode_backcolor */ 0x006600ff, + /* mode_colorkey,msk*/ 0, 0, + { + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ LCD_WINENABLE_WEN0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP, + /* mode_winenable*/ 0, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_32BPP | + LCD_WINCTRL1_PO_00|LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0/*LCD_WINENABLE_WEN2*/, + }, + { + /* xres, yres, xpos, ypos */ 0, 0, 0, 0, + /* mode_winctrl1 */ LCD_WINCTRL1_FRM_16BPP565 | + LCD_WINCTRL1_PO_16BPP | + LCD_WINCTRL1_PIPE, + /* mode_winenable*/ 0, + }, + }, + }, + /* Need VGA 640 @ 24bpp, @ 32bpp */ + /* Need VGA 800 @ 24bpp, @ 32bpp */ + /* Need VGA 1024 @ 24bpp, @ 32bpp */ +}; + +/* + * Controller configurations for various panels. + */ + +struct panel_settings +{ + const char name[25]; /* Full name <vendor>_<model> */ + + struct fb_monspecs monspecs; /* FB monitor specs */ + + /* panel timings */ + uint32 mode_screen; + uint32 mode_horztiming; + uint32 mode_verttiming; + uint32 mode_clkcontrol; + uint32 mode_pwmdiv; + uint32 mode_pwmhi; + uint32 mode_outmask; + uint32 mode_fifoctrl; + uint32 mode_toyclksrc; + uint32 mode_backlight; + uint32 mode_auxpll; + int (*device_init)(void); + int (*device_shutdown)(void); +#define Xres min_xres +#define Yres min_yres + u32 min_xres; /* Minimum horizontal resolution */ + u32 max_xres; /* Maximum horizontal resolution */ + u32 min_yres; /* Minimum vertical resolution */ + u32 max_yres; /* Maximum vertical resolution */ +}; + +/********************************************************************/ +/* fixme: Maybe a modedb for the CRT ? otherwise panels should be as-is */ + +/* List of panels known to work with the AU1200 LCD controller. + * To add a new panel, enter the same specifications as the + * Generic_TFT one, and MAKE SURE that it doesn't conflicts + * with the controller restrictions. Restrictions are: + * + * STN color panels: max_bpp <= 12 + * STN mono panels: max_bpp <= 4 + * TFT panels: max_bpp <= 16 + * max_xres <= 800 + * max_yres <= 600 + */ +static struct panel_settings known_lcd_panels[] = +{ + [0] = { /* QVGA 320x240 H:33.3kHz V:110Hz */ + .name = "QVGA_320x240", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = 0x00c4623b, + .mode_verttiming = 0x00502814, + .mode_clkcontrol = 0x00020002, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 320, 320, + 240, 240, + }, + + [1] = { /* VGA 640x480 H:30.3kHz V:58Hz */ + .name = "VGA_640x480", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x13f9df80, + .mode_horztiming = 0x003c5859, + .mode_verttiming = 0x00741201, + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 640, 480, + 640, 480, + }, + + [2] = { /* SVGA 800x600 H:46.1kHz V:69Hz */ + .name = "SVGA_800x600", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x18fa5780, + .mode_horztiming = 0x00dc7e77, + .mode_verttiming = 0x00584805, + .mode_clkcontrol = 0x00020000, /* /2=48Mhz */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 800, 800, + 600, 600, + }, + + [3] = { /* XVGA 1024x768 H:56.2kHz V:70Hz */ + .name = "XVGA_1024x768", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x007d0e57, + .mode_verttiming = 0x00740a01, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 6, /* 72MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 1024, 1024, + 768, 768, + }, + + [4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */ + .name = "XVGA_1280x1024", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x27fbff80, + .mode_horztiming = 0x00cdb2c7, + .mode_verttiming = 0x00600002, + .mode_clkcontrol = 0x000A0000, /* /1 */ + .mode_pwmdiv = 0x00000000, + .mode_pwmhi = 0x00000000, + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 10, /* 120MHz AUXPLL */ + .device_init = NULL, + .device_shutdown = NULL, + 1280, 1280, + 1024, 1024, + }, + + [5] = { /* Samsung 1024x768 TFT */ + .name = "Samsung_1024x768_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = 0x1ffaff80, + .mode_horztiming = 0x018cc677, + .mode_verttiming = 0x00241217, + .mode_clkcontrol = 0x00000000, /* SCB 0x1 /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, /* SCB 0x0 */ + .mode_pwmhi = 0x03400000, /* SCB 0x0 */ + .mode_outmask = 0x00FFFFFF, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 1024, 1024, + 768, 768, + }, + + [6] = { /* Toshiba 640x480 TFT */ + .name = "Toshiba_640x480_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(640) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HPW_N(96) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32), + .mode_clkcontrol = 0x00000000, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 640, 480, + 640, 480, + }, + + [7] = { /* Sharp 320x240 TFT */ + .name = "Sharp_320x240_TFT", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 12500, + .hfmax = 20000, + .vfmin = 38, + .vfmax = 81, + .dclkmin = 4500000, + .dclkmax = 6800000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(320) | + LCD_SCREEN_SY_N(240), + .mode_horztiming = LCD_HORZTIMING_HPW_N(60) | + LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2), + .mode_verttiming = LCD_VERTTIMING_VPW_N(2) | + LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5), + .mode_clkcontrol = LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 320, 320, + 240, 240, + }, + + [8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */ + .name = "Toppoly_TD070WGCB2", + .monspecs = { + .modedb = NULL, + .modedb_len = 0, + .hfmin = 30000, + .hfmax = 70000, + .vfmin = 60, + .vfmax = 60, + .dclkmin = 6000000, + .dclkmax = 28000000, + .input = FB_DISP_RGB, + }, + .mode_screen = LCD_SCREEN_SX_N(856) | + LCD_SCREEN_SY_N(480), + .mode_horztiming = LCD_HORZTIMING_HND2_N(43) | + LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114), + .mode_verttiming = LCD_VERTTIMING_VND2_N(20) | + LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4), + .mode_clkcontrol = 0x00020001, /* /4=24Mhz */ + .mode_pwmdiv = 0x8000063f, + .mode_pwmhi = 0x03400000, + .mode_outmask = 0x00fcfcfc, + .mode_fifoctrl = 0x2f2f2f2f, + .mode_toyclksrc = 0x00000004, /* AUXPLL directly */ + .mode_backlight = 0x00000000, + .mode_auxpll = 8, /* 96MHz AUXPLL */ + .device_init = board_au1200fb_panel_init, + .device_shutdown = board_au1200fb_panel_shutdown, + 856, 856, + 480, 480, + }, +}; + +#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels)) + +/********************************************************************/ + +#ifdef CONFIG_PM +static int set_brightness(unsigned int brightness) +{ + unsigned int hi1, divider; + + /* limit brightness pwm duty to >= 30/1600 */ + if (brightness < 30) { + brightness = 30; + } + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + hi1 = (lcd->pwmhi >> 16) + 1; + hi1 = (((brightness & 0xFF) + 1) * divider >> 8); + lcd->pwmhi &= 0xFFFF; + lcd->pwmhi |= (hi1 << 16); + + return brightness; +} +#endif /* CONFIG_PM */ + +static int winbpp (unsigned int winctrl1) +{ + int bits = 0; + + /* how many bits are needed for each pixel format */ + switch (winctrl1 & LCD_WINCTRL1_FRM) { + case LCD_WINCTRL1_FRM_1BPP: + bits = 1; + break; + case LCD_WINCTRL1_FRM_2BPP: + bits = 2; + break; + case LCD_WINCTRL1_FRM_4BPP: + bits = 4; + break; + case LCD_WINCTRL1_FRM_8BPP: + bits = 8; + break; + case LCD_WINCTRL1_FRM_12BPP: + case LCD_WINCTRL1_FRM_16BPP655: + case LCD_WINCTRL1_FRM_16BPP565: + case LCD_WINCTRL1_FRM_16BPP556: + case LCD_WINCTRL1_FRM_16BPPI1555: + case LCD_WINCTRL1_FRM_16BPPI5551: + case LCD_WINCTRL1_FRM_16BPPA1555: + case LCD_WINCTRL1_FRM_16BPPA5551: + bits = 16; + break; + case LCD_WINCTRL1_FRM_24BPP: + case LCD_WINCTRL1_FRM_32BPP: + bits = 32; + break; + } + + return bits; +} + +static int fbinfo2index (struct fb_info *fb_info) +{ + int i; + + for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) { + if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info)) + return i; + } + printk("au1200fb: ERROR: fbinfo2index failed!\n"); + return -1; +} + +static int au1200_setlocation (struct au1200fb_device *fbdev, int plane, + int xpos, int ypos) +{ + uint32 winctrl0, winctrl1, winenable, fb_offset = 0; + int xsz, ysz; + + /* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */ + + winctrl0 = lcd->window[plane].winctrl0; + winctrl1 = lcd->window[plane].winctrl1; + winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN); + winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY); + + /* Check for off-screen adjustments */ + xsz = win->w[plane].xres; + ysz = win->w[plane].yres; + if ((xpos + win->w[plane].xres) > panel->Xres) { + /* Off-screen to the right */ + xsz = panel->Xres - xpos; /* off by 1 ??? */ + /*printk("off screen right\n");*/ + } + + if ((ypos + win->w[plane].yres) > panel->Yres) { + /* Off-screen to the bottom */ + ysz = panel->Yres - ypos; /* off by 1 ??? */ + /*printk("off screen bottom\n");*/ + } + + if (xpos < 0) { + /* Off-screen to the left */ + xsz = win->w[plane].xres + xpos; + fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8); + xpos = 0; + /*printk("off screen left\n");*/ + } + + if (ypos < 0) { + /* Off-screen to the top */ + ysz = win->w[plane].yres + ypos; + /* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */ + ypos = 0; + /*printk("off screen top\n");*/ + } + + /* record settings */ + win->w[plane].xpos = xpos; + win->w[plane].ypos = ypos; + + xsz -= 1; + ysz -= 1; + winctrl0 |= (xpos << 21); + winctrl0 |= (ypos << 10); + winctrl1 |= (xsz << 11); + winctrl1 |= (ysz << 0); + + /* Disable the window while making changes, then restore WINEN */ + winenable = lcd->winenable & (1 << plane); + au_sync(); + lcd->winenable &= ~(1 << plane); + lcd->window[plane].winctrl0 = winctrl0; + lcd->window[plane].winctrl1 = winctrl1; + lcd->window[plane].winbuf0 = + lcd->window[plane].winbuf1 = fbdev->fb_phys; + lcd->window[plane].winbufctrl = 0; /* select winbuf0 */ + lcd->winenable |= winenable; + au_sync(); + + return 0; +} + +static void au1200_setpanel (struct panel_settings *newpanel) +{ + /* + * Perform global setup/init of LCD controller + */ + uint32 winenable; + + /* Make sure all windows disabled */ + winenable = lcd->winenable; + lcd->winenable = 0; + au_sync(); + /* + * Ensure everything is disabled before reconfiguring + */ + if (lcd->screen & LCD_SCREEN_SEN) { + /* Wait for vertical sync period */ + lcd->intstatus = LCD_INT_SS; + while ((lcd->intstatus & LCD_INT_SS) == 0) { + au_sync(); + } + + lcd->screen &= ~LCD_SCREEN_SEN; /*disable the controller*/ + + do { + lcd->intstatus = lcd->intstatus; /*clear interrupts*/ + au_sync(); + /*wait for controller to shut down*/ + } while ((lcd->intstatus & LCD_INT_SD) == 0); + + /* Call shutdown of current panel (if up) */ + /* this must occur last, because if an external clock is driving + the controller, the clock cannot be turned off before first + shutting down the controller. + */ + if (panel->device_shutdown != NULL) + panel->device_shutdown(); + } + + /* Newpanel == NULL indicates a shutdown operation only */ + if (newpanel == NULL) + return; + + panel = newpanel; + + printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres); + + /* + * Setup clocking if internal LCD clock source (assumes sys_auxpll valid) + */ + if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT)) + { + uint32 sys_clksrc; + au_writel(panel->mode_auxpll, SYS_AUXPLL); + sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f; + sys_clksrc |= panel->mode_toyclksrc; + au_writel(sys_clksrc, SYS_CLKSRC); + } + + /* + * Configure panel timings + */ + lcd->screen = panel->mode_screen; + lcd->horztiming = panel->mode_horztiming; + lcd->verttiming = panel->mode_verttiming; + lcd->clkcontrol = panel->mode_clkcontrol; + lcd->pwmdiv = panel->mode_pwmdiv; + lcd->pwmhi = panel->mode_pwmhi; + lcd->outmask = panel->mode_outmask; + lcd->fifoctrl = panel->mode_fifoctrl; + au_sync(); + + /* fixme: Check window settings to make sure still valid + * for new geometry */ +#if 0 + au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos); + au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos); + au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos); + au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos); +#endif + lcd->winenable = winenable; + + /* + * Re-enable screen now that it is configured + */ + lcd->screen |= LCD_SCREEN_SEN; + au_sync(); + + /* Call init of panel */ + if (panel->device_init != NULL) panel->device_init(); + + /* FIX!!!! not appropriate on panel change!!! Global setup/init */ + lcd->intenable = 0; + lcd->intstatus = ~0; + lcd->backcolor = win->mode_backcolor; + + /* Setup Color Key - FIX!!! */ + lcd->colorkey = win->mode_colorkey; + lcd->colorkeymsk = win->mode_colorkeymsk; + + /* Setup HWCursor - FIX!!! Need to support this eventually */ + lcd->hwc.cursorctrl = 0; + lcd->hwc.cursorpos = 0; + lcd->hwc.cursorcolor0 = 0; + lcd->hwc.cursorcolor1 = 0; + lcd->hwc.cursorcolor2 = 0; + lcd->hwc.cursorcolor3 = 0; + + +#if 0 +#define D(X) printk("%25s: %08X\n", #X, X) + D(lcd->screen); + D(lcd->horztiming); + D(lcd->verttiming); + D(lcd->clkcontrol); + D(lcd->pwmdiv); + D(lcd->pwmhi); + D(lcd->outmask); + D(lcd->fifoctrl); + D(lcd->window[0].winctrl0); + D(lcd->window[0].winctrl1); + D(lcd->window[0].winctrl2); + D(lcd->window[0].winbuf0); + D(lcd->window[0].winbuf1); + D(lcd->window[0].winbufctrl); + D(lcd->window[1].winctrl0); + D(lcd->window[1].winctrl1); + D(lcd->window[1].winctrl2); + D(lcd->window[1].winbuf0); + D(lcd->window[1].winbuf1); + D(lcd->window[1].winbufctrl); + D(lcd->window[2].winctrl0); + D(lcd->window[2].winctrl1); + D(lcd->window[2].winctrl2); + D(lcd->window[2].winbuf0); + D(lcd->window[2].winbuf1); + D(lcd->window[2].winbufctrl); + D(lcd->window[3].winctrl0); + D(lcd->window[3].winctrl1); + D(lcd->window[3].winctrl2); + D(lcd->window[3].winbuf0); + D(lcd->window[3].winbuf1); + D(lcd->window[3].winbufctrl); + D(lcd->winenable); + D(lcd->intenable); + D(lcd->intstatus); + D(lcd->backcolor); + D(lcd->winenable); + D(lcd->colorkey); + D(lcd->colorkeymsk); + D(lcd->hwc.cursorctrl); + D(lcd->hwc.cursorpos); + D(lcd->hwc.cursorcolor0); + D(lcd->hwc.cursorcolor1); + D(lcd->hwc.cursorcolor2); + D(lcd->hwc.cursorcolor3); +#endif +} + +static void au1200_setmode(struct au1200fb_device *fbdev) +{ + int plane = fbdev->plane; + /* Window/plane setup */ + lcd->window[plane].winctrl1 = ( 0 + | LCD_WINCTRL1_PRI_N(plane) + | win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */ + ) ; + + au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos); + + lcd->window[plane].winctrl2 = ( 0 + | LCD_WINCTRL2_CKMODE_00 + | LCD_WINCTRL2_DBM + | LCD_WINCTRL2_BX_N( fbdev->fb_info.fix.line_length) + | LCD_WINCTRL2_SCX_1 + | LCD_WINCTRL2_SCY_1 + ) ; + lcd->winenable |= win->w[plane].mode_winenable; + au_sync(); +} + + +/* Inline helpers */ + +/*#define panel_is_dual(panel) ((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ +/*#define panel_is_active(panel)((panel->mode_screen & LCD_SCREEN_PT) == LCD_SCREEN_PT_010)*/ + +#define panel_is_color(panel) ((panel->mode_screen & LCD_SCREEN_PT) <= LCD_SCREEN_PT_CDSTN) + +/* Bitfields format supported by the controller. */ +static struct fb_bitfield rgb_bitfields[][4] = { + /* Red, Green, Blue, Transp */ + [LCD_WINCTRL1_FRM_16BPP655 >> 25] = + { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP565 >> 25] = + { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPP556 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPI5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA1555 >> 25] = + { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, + + [LCD_WINCTRL1_FRM_16BPPA5551 >> 25] = + { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, + + [LCD_WINCTRL1_FRM_24BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 0, 0, 0 } }, + + [LCD_WINCTRL1_FRM_32BPP >> 25] = + { { 16, 8, 0 }, { 8, 8, 0 }, { 0, 8, 0 }, { 24, 0, 0 } }, +}; + +/*-------------------------------------------------------------------------*/ + +/* Helpers */ + +static void au1200fb_update_fbinfo(struct fb_info *fbi) +{ + /* FIX!!!! This also needs to take the window pixel format into account!!! */ + + /* Update var-dependent FB info */ + if (panel_is_color(panel)) { + if (fbi->var.bits_per_pixel <= 8) { + /* palettized */ + fbi->fix.visual = FB_VISUAL_PSEUDOCOLOR; + fbi->fix.line_length = fbi->var.xres_virtual / + (8/fbi->var.bits_per_pixel); + } else { + /* non-palettized */ + fbi->fix.visual = FB_VISUAL_TRUECOLOR; + fbi->fix.line_length = fbi->var.xres_virtual * (fbi->var.bits_per_pixel / 8); + } + } else { + /* mono FIX!!! mono 8 and 4 bits */ + fbi->fix.visual = FB_VISUAL_MONO10; + fbi->fix.line_length = fbi->var.xres_virtual / 8; + } + + fbi->screen_size = fbi->fix.line_length * fbi->var.yres_virtual; + print_dbg("line length: %d\n", fbi->fix.line_length); + print_dbg("bits_per_pixel: %d\n", fbi->var.bits_per_pixel); +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 framebuffer driver */ + +/* fb_check_var + * Validate var settings with hardware restrictions and modify it if necessary + */ +static int au1200fb_fb_check_var(struct fb_var_screeninfo *var, + struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi; + u32 pixclock; + int screen_size, plane; + + plane = fbdev->plane; + + /* Make sure that the mode respect all LCD controller and + * panel restrictions. */ + var->xres = win->w[plane].xres; + var->yres = win->w[plane].yres; + + /* No need for virtual resolution support */ + var->xres_virtual = var->xres; + var->yres_virtual = var->yres; + + var->bits_per_pixel = winbpp(win->w[plane].mode_winctrl1); + + screen_size = var->xres_virtual * var->yres_virtual; + if (var->bits_per_pixel > 8) screen_size *= (var->bits_per_pixel / 8); + else screen_size /= (8/var->bits_per_pixel); + + if (fbdev->fb_len < screen_size) + return -EINVAL; /* Virtual screen is to big, abort */ + + /* FIX!!!! what are the implicaitons of ignoring this for windows ??? */ + /* The max LCD clock is fixed to 48MHz (value of AUX_CLK). The pixel + * clock can only be obtain by dividing this value by an even integer. + * Fallback to a slower pixel clock if necessary. */ + pixclock = max((u32)(PICOS2KHZ(var->pixclock) * 1000), fbi->monspecs.dclkmin); + pixclock = min(pixclock, min(fbi->monspecs.dclkmax, (u32)AU1200_LCD_MAX_CLK/2)); + + if (AU1200_LCD_MAX_CLK % pixclock) { + int diff = AU1200_LCD_MAX_CLK % pixclock; + pixclock -= diff; + } + + var->pixclock = KHZ2PICOS(pixclock/1000); +#if 0 + if (!panel_is_active(panel)) { + int pcd = AU1200_LCD_MAX_CLK / (pixclock * 2) - 1; + + if (!panel_is_color(panel) + && (panel->control_base & LCD_CONTROL_MPI) && (pcd < 3)) { + /* STN 8bit mono panel support is up to 6MHz pixclock */ + var->pixclock = KHZ2PICOS(6000); + } else if (!pcd) { + /* Other STN panel support is up to 12MHz */ + var->pixclock = KHZ2PICOS(12000); + } + } +#endif + /* Set bitfield accordingly */ + switch (var->bits_per_pixel) { + case 16: + { + /* 16bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + + case 32: + { + /* 32bpp True color. + * These must be set to MATCH WINCTRL[FORM] */ + int idx; + idx = (win->w[0].mode_winctrl1 & LCD_WINCTRL1_FRM) >> 25; + var->red = rgb_bitfields[idx][0]; + var->green = rgb_bitfields[idx][1]; + var->blue = rgb_bitfields[idx][2]; + var->transp = rgb_bitfields[idx][3]; + break; + } + default: + print_dbg("Unsupported depth %dbpp", var->bits_per_pixel); + return -EINVAL; + } + + return 0; +} + +/* fb_set_par + * Set hardware with var settings. This will enable the controller with a + * specific mode, normally validated with the fb_check_var method + */ +static int au1200fb_fb_set_par(struct fb_info *fbi) +{ + struct au1200fb_device *fbdev = (struct au1200fb_device *)fbi; + + au1200fb_update_fbinfo(fbi); + au1200_setmode(fbdev); + + return 0; +} + +/* fb_setcolreg + * Set color in LCD palette. + */ +static int au1200fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, struct fb_info *fbi) +{ + volatile u32 *palette = lcd->palette; + u32 value; + + if (regno > (AU1200_LCD_NBR_PALETTE_ENTRIES - 1)) + return -EINVAL; + + if (fbi->var.grayscale) { + /* Convert color to grayscale */ + red = green = blue = + (19595 * red + 38470 * green + 7471 * blue) >> 16; + } + + if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { + /* Place color in the pseudopalette */ + if (regno > 16) + return -EINVAL; + + palette = (u32*) fbi->pseudo_palette; + + red >>= (16 - fbi->var.red.length); + green >>= (16 - fbi->var.green.length); + blue >>= (16 - fbi->var.blue.length); + + value = (red << fbi->var.red.offset) | + (green << fbi->var.green.offset)| + (blue << fbi->var.blue.offset); + value &= 0xFFFF; + + } else if (1 /*FIX!!! panel_is_active(fbdev->panel)*/) { + /* COLOR TFT PALLETTIZED (use RGB 565) */ + value = (red & 0xF800)|((green >> 5) & + 0x07E0)|((blue >> 11) & 0x001F); + value &= 0xFFFF; + + } else if (0 /*panel_is_color(fbdev->panel)*/) { + /* COLOR STN MODE */ + value = 0x1234; + value &= 0xFFF; + } else { + /* MONOCHROME MODE */ + value = (green >> 12) & 0x000F; + value &= 0xF; + } + + palette[regno] = value; + + return 0; +} + +/* fb_blank + * Blank the screen. Depending on the mode, the screen will be + * activated with the backlight color, or desactivated + */ +static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi) +{ + /* Short-circuit screen blanking */ + if (noblanking) + return 0; + + switch (blank_mode) { + + case FB_BLANK_UNBLANK: + case FB_BLANK_NORMAL: + /* printk("turn on panel\n"); */ + au1200_setpanel(panel); + break; + case FB_BLANK_VSYNC_SUSPEND: + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_POWERDOWN: + /* printk("turn off panel\n"); */ + au1200_setpanel(NULL); + break; + default: + break; + + } + + /* FB_BLANK_NORMAL is a soft blank */ + return (blank_mode == FB_BLANK_NORMAL) ? -EINVAL : 0; +} + +/* fb_mmap + * Map video memory in user space. We don't use the generic fb_mmap + * method mainly to allow the use of the TLB streaming flag (CCA=6) + */ +static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) + +{ + unsigned int len; + unsigned long start=0, off; + struct au1200fb_device *fbdev = (struct au1200fb_device *) info; + +#ifdef CONFIG_PM + au1xxx_pm_access(LCD_pm_dev); +#endif + + if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { + return -EINVAL; + } + + start = fbdev->fb_phys & PAGE_MASK; + len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); + + off = vma->vm_pgoff << PAGE_SHIFT; + + if ((vma->vm_end - vma->vm_start + off) > len) { + return -EINVAL; + } + + off += start; + vma->vm_pgoff = off >> PAGE_SHIFT; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */ + + vma->vm_flags |= VM_IO; + + return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, + vma->vm_end - vma->vm_start, + vma->vm_page_prot); + + return 0; +} + +static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + + unsigned int hi1, divider; + + /* SCREEN_SIZE: user cannot reset size, must switch panel choice */ + + if (pdata->flags & SCREEN_BACKCOLOR) + lcd->backcolor = pdata->backcolor; + + if (pdata->flags & SCREEN_BRIGHTNESS) { + + // limit brightness pwm duty to >= 30/1600 + if (pdata->brightness < 30) { + pdata->brightness = 30; + } + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + hi1 = (lcd->pwmhi >> 16) + 1; + hi1 = (((pdata->brightness & 0xFF)+1) * divider >> 8); + lcd->pwmhi &= 0xFFFF; + lcd->pwmhi |= (hi1 << 16); + } + + if (pdata->flags & SCREEN_COLORKEY) + lcd->colorkey = pdata->colorkey; + + if (pdata->flags & SCREEN_MASK) + lcd->colorkeymsk = pdata->mask; + au_sync(); +} + +static void get_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) +{ + unsigned int hi1, divider; + + pdata->xsize = ((lcd->screen & LCD_SCREEN_SX) >> 19) + 1; + pdata->ysize = ((lcd->screen & LCD_SCREEN_SY) >> 8) + 1; + + pdata->backcolor = lcd->backcolor; + pdata->colorkey = lcd->colorkey; + pdata->mask = lcd->colorkeymsk; + + // brightness + hi1 = (lcd->pwmhi >> 16) + 1; + divider = (lcd->pwmdiv & 0x3FFFF) + 1; + pdata->brightness = ((hi1 << 8) / divider) - 1; + au_sync(); +} + +static void set_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + unsigned int val, bpp; + + /* Window control register 0 */ + if (pdata->flags & WIN_POSITION) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_OX | + LCD_WINCTRL0_OY); + val |= ((pdata->xpos << 21) & LCD_WINCTRL0_OX); + val |= ((pdata->ypos << 10) & LCD_WINCTRL0_OY); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_COLOR) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_A); + val |= ((pdata->alpha_color << 2) & LCD_WINCTRL0_A); + lcd->window[plane].winctrl0 = val; + } + if (pdata->flags & WIN_ALPHA_MODE) { + val = lcd->window[plane].winctrl0 & ~(LCD_WINCTRL0_AEN); + val |= ((pdata->alpha_mode << 1) & LCD_WINCTRL0_AEN); + lcd->window[plane].winctrl0 = val; + } + + /* Window control register 1 */ + if (pdata->flags & WIN_PRIORITY) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PRI); + val |= ((pdata->priority << 30) & LCD_WINCTRL1_PRI); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_CHANNEL) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PIPE); + val |= ((pdata->channel << 29) & LCD_WINCTRL1_PIPE); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_BUFFER_FORMAT) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_FRM); + val |= ((pdata->buffer_format << 25) & LCD_WINCTRL1_FRM); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_COLOR_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_CCO); + val |= ((pdata->color_order << 24) & LCD_WINCTRL1_CCO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_PIXEL_ORDER) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_PO); + val |= ((pdata->pixel_order << 22) & LCD_WINCTRL1_PO); + lcd->window[plane].winctrl1 = val; + } + if (pdata->flags & WIN_SIZE) { + val = lcd->window[plane].winctrl1 & ~(LCD_WINCTRL1_SZX | + LCD_WINCTRL1_SZY); + val |= (((pdata->xsize << 11) - 1) & LCD_WINCTRL1_SZX); + val |= (((pdata->ysize) - 1) & LCD_WINCTRL1_SZY); + lcd->window[plane].winctrl1 = val; + /* program buffer line width */ + bpp = winbpp(val) / 8; + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_BX); + val |= (((pdata->xsize * bpp) << 8) & LCD_WINCTRL2_BX); + lcd->window[plane].winctrl2 = val; + } + + /* Window control register 2 */ + if (pdata->flags & WIN_COLORKEY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_CKMODE); + val |= ((pdata->colorkey_mode << 24) & LCD_WINCTRL2_CKMODE); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_DOUBLE_BUFFER_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_DBM); + val |= ((pdata->double_buffer_mode << 23) & LCD_WINCTRL2_DBM); + lcd->window[plane].winctrl2 = val; + } + if (pdata->flags & WIN_RAM_ARRAY_MODE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_RAM); + val |= ((pdata->ram_array_mode << 21) & LCD_WINCTRL2_RAM); + lcd->window[plane].winctrl2 = val; + } + + /* Buffer line width programmed with WIN_SIZE */ + + if (pdata->flags & WIN_BUFFER_SCALE) { + val = lcd->window[plane].winctrl2 & ~(LCD_WINCTRL2_SCX | + LCD_WINCTRL2_SCY); + val |= ((pdata->xsize << 11) & LCD_WINCTRL2_SCX); + val |= ((pdata->ysize) & LCD_WINCTRL2_SCY); + lcd->window[plane].winctrl2 = val; + } + + if (pdata->flags & WIN_ENABLE) { + val = lcd->winenable; + val &= ~(1<<plane); + val |= (pdata->enable & 1) << plane; + lcd->winenable = val; + } + au_sync(); +} + +static void get_window(unsigned int plane, + struct au1200_lcd_window_regs_t *pdata) +{ + /* Window control register 0 */ + pdata->xpos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OX) >> 21; + pdata->ypos = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_OY) >> 10; + pdata->alpha_color = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_A) >> 2; + pdata->alpha_mode = (lcd->window[plane].winctrl0 & LCD_WINCTRL0_AEN) >> 1; + + /* Window control register 1 */ + pdata->priority = (lcd->window[plane].winctrl1& LCD_WINCTRL1_PRI) >> 30; + pdata->channel = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PIPE) >> 29; + pdata->buffer_format = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_FRM) >> 25; + pdata->color_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_CCO) >> 24; + pdata->pixel_order = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_PO) >> 22; + pdata->xsize = ((lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZX) >> 11) + 1; + pdata->ysize = (lcd->window[plane].winctrl1 & LCD_WINCTRL1_SZY) + 1; + + /* Window control register 2 */ + pdata->colorkey_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_CKMODE) >> 24; + pdata->double_buffer_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_DBM) >> 23; + pdata->ram_array_mode = (lcd->window[plane].winctrl2 & LCD_WINCTRL2_RAM) >> 21; + + pdata->enable = (lcd->winenable >> plane) & 1; + au_sync(); +} + +static int au1200fb_ioctl(struct fb_info *info, unsigned int cmd, + unsigned long arg) +{ + int plane; + int val; + +#ifdef CONFIG_PM + au1xxx_pm_access(LCD_pm_dev); +#endif + + plane = fbinfo2index(info); + print_dbg("au1200fb: ioctl %d on plane %d\n", cmd, plane); + + if (cmd == AU1200_LCD_FB_IOCTL) { + struct au1200_lcd_iodata_t iodata; + + if (copy_from_user(&iodata, (void __user *) arg, sizeof(iodata))) + return -EFAULT; + + print_dbg("FB IOCTL called\n"); + + switch (iodata.subcmd) { + case AU1200_LCD_SET_SCREEN: + print_dbg("AU1200_LCD_SET_SCREEN\n"); + set_global(cmd, &iodata.global); + break; + + case AU1200_LCD_GET_SCREEN: + print_dbg("AU1200_LCD_GET_SCREEN\n"); + get_global(cmd, &iodata.global); + break; + + case AU1200_LCD_SET_WINDOW: + print_dbg("AU1200_LCD_SET_WINDOW\n"); + set_window(plane, &iodata.window); + break; + + case AU1200_LCD_GET_WINDOW: + print_dbg("AU1200_LCD_GET_WINDOW\n"); + get_window(plane, &iodata.window); + break; + + case AU1200_LCD_SET_PANEL: + print_dbg("AU1200_LCD_SET_PANEL\n"); + if ((iodata.global.panel_choice >= 0) && + (iodata.global.panel_choice < + NUM_PANELS)) + { + struct panel_settings *newpanel; + panel_index = iodata.global.panel_choice; + newpanel = &known_lcd_panels[panel_index]; + au1200_setpanel(newpanel); + } + break; + + case AU1200_LCD_GET_PANEL: + print_dbg("AU1200_LCD_GET_PANEL\n"); + iodata.global.panel_choice = panel_index; + break; + + default: + return -EINVAL; + } + + val = copy_to_user((void __user *) arg, &iodata, sizeof(iodata)); + if (val) { + print_dbg("error: could not copy %d bytes\n", val); + return -EFAULT; + } + } + + return 0; +} + + +static struct fb_ops au1200fb_fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = au1200fb_fb_check_var, + .fb_set_par = au1200fb_fb_set_par, + .fb_setcolreg = au1200fb_fb_setcolreg, + .fb_blank = au1200fb_fb_blank, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_sync = NULL, + .fb_ioctl = au1200fb_ioctl, + .fb_mmap = au1200fb_fb_mmap, +}; + +/*-------------------------------------------------------------------------*/ + +static irqreturn_t au1200fb_handle_irq(int irq, void* dev_id, struct pt_regs *regs) +{ + /* Nothing to do for now, just clear any pending interrupt */ + lcd->intstatus = lcd->intstatus; + au_sync(); + + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 LCD device probe helpers */ + +static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev) +{ + struct fb_info *fbi = &fbdev->fb_info; + int bpp; + + memset(fbi, 0, sizeof(struct fb_info)); + fbi->fbops = &au1200fb_fb_ops; + + bpp = winbpp(win->w[fbdev->plane].mode_winctrl1); + + /* Copy monitor specs from panel data */ + /* fixme: we're setting up LCD controller windows, so these dont give a + damn as to what the monitor specs are (the panel itself does, but that + isnt done here...so maybe need a generic catchall monitor setting??? */ + memcpy(&fbi->monspecs, &panel->monspecs, sizeof(struct fb_monspecs)); + + /* We first try the user mode passed in argument. If that failed, + * or if no one has been specified, we default to the first mode of the + * panel list. Note that after this call, var data will be set */ + if (!fb_find_mode(&fbi->var, + fbi, + NULL, /* drv_info.opt_mode, */ + fbi->monspecs.modedb, + fbi->monspecs.modedb_len, + fbi->monspecs.modedb, + bpp)) { + + print_err("Cannot find valid mode for panel %s", panel->name); + return -EFAULT; + } + + fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL); + if (!fbi->pseudo_palette) { + return -ENOMEM; + } + memset(fbi->pseudo_palette, 0, sizeof(u32) * 16); + + if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { + print_err("Fail to allocate colormap (%d entries)", + AU1200_LCD_NBR_PALETTE_ENTRIES); + kfree(fbi->pseudo_palette); + return -EFAULT; + } + + strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id)); + fbi->fix.smem_start = fbdev->fb_phys; + fbi->fix.smem_len = fbdev->fb_len; + fbi->fix.type = FB_TYPE_PACKED_PIXELS; + fbi->fix.xpanstep = 0; + fbi->fix.ypanstep = 0; + fbi->fix.mmio_start = 0; + fbi->fix.mmio_len = 0; + fbi->fix.accel = FB_ACCEL_NONE; + + fbi->screen_base = (char __iomem *) fbdev->fb_mem; + + au1200fb_update_fbinfo(fbi); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +/* AU1200 LCD controller device driver */ + +static int au1200fb_drv_probe(struct device *dev) +{ + struct au1200fb_device *fbdev; + unsigned long page; + int bpp, plane, ret; + + if (!dev) + return -EINVAL; + + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) { + bpp = winbpp(win->w[plane].mode_winctrl1); + if (win->w[plane].xres == 0) + win->w[plane].xres = panel->Xres; + if (win->w[plane].yres == 0) + win->w[plane].yres = panel->Yres; + + fbdev = &_au1200fb_devices[plane]; + memset(fbdev, 0, sizeof(struct au1200fb_device)); + fbdev->plane = plane; + + /* Allocate the framebuffer to the maximum screen size */ + fbdev->fb_len = (win->w[plane].xres * win->w[plane].yres * bpp) / 8; + + fbdev->fb_mem = dma_alloc_noncoherent(dev, + PAGE_ALIGN(fbdev->fb_len), + &fbdev->fb_phys, GFP_KERNEL); + if (!fbdev->fb_mem) { + print_err("fail to allocate frambuffer (size: %dK))", + fbdev->fb_len / 1024); + return -ENOMEM; + } + + /* + * Set page reserved so that mmap will work. This is necessary + * since we'll be remapping normal memory. + */ + for (page = (unsigned long)fbdev->fb_phys; + page < PAGE_ALIGN((unsigned long)fbdev->fb_phys + + fbdev->fb_len); + page += PAGE_SIZE) { + SetPageReserved(pfn_to_page(page >> PAGE_SHIFT)); /* LCD DMA is NOT coherent on Au1200 */ + } + print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); + print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); + + /* Init FB data */ + if ((ret = au1200fb_init_fbinfo(fbdev)) < 0) + goto failed; + + /* Register new framebuffer */ + if ((ret = register_framebuffer(&fbdev->fb_info)) < 0) { + print_err("cannot register new framebuffer"); + goto failed; + } + + au1200fb_fb_set_par(&fbdev->fb_info); + +#if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) + if (plane == 0) + if (fb_prepare_logo(&fbdev->fb_info, FB_ROTATE_UR)) { + /* Start display and show logo on boot */ + fb_set_cmap(&fbdev->fb_info.cmap, + &fbdev->fb_info); + + fb_show_logo(&fbdev->fb_info, FB_ROTATE_UR); + } +#endif + } + + /* Now hook interrupt too */ + if ((ret = request_irq(AU1200_LCD_INT, au1200fb_handle_irq, + SA_INTERRUPT | SA_SHIRQ, "lcd", (void *)dev)) < 0) { + print_err("fail to request interrupt line %d (err: %d)", + AU1200_LCD_INT, ret); + goto failed; + } + + return 0; + +failed: + /* NOTE: This only does the current plane/window that failed; others are still active */ + if (fbdev->fb_mem) + dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len), + fbdev->fb_mem, fbdev->fb_phys); + if (fbdev->fb_info.cmap.len != 0) + fb_dealloc_cmap(&fbdev->fb_info.cmap); + if (fbdev->fb_info.pseudo_palette) + kfree(fbdev->fb_info.pseudo_palette); + if (plane == 0) + free_irq(AU1200_LCD_INT, (void*)dev); + return ret; +} + +static int au1200fb_drv_remove(struct device *dev) +{ + struct au1200fb_device *fbdev; + int plane; + + if (!dev) + return -ENODEV; + + /* Turn off the panel */ + au1200_setpanel(NULL); + + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) + { + fbdev = &_au1200fb_devices[plane]; + + /* Clean up all probe data */ + unregister_framebuffer(&fbdev->fb_info); + if (fbdev->fb_mem) + dma_free_noncoherent(dev, PAGE_ALIGN(fbdev->fb_len), + fbdev->fb_mem, fbdev->fb_phys); + if (fbdev->fb_info.cmap.len != 0) + fb_dealloc_cmap(&fbdev->fb_info.cmap); + if (fbdev->fb_info.pseudo_palette) + kfree(fbdev->fb_info.pseudo_palette); + } + + free_irq(AU1200_LCD_INT, (void *)dev); + + return 0; +} + +#ifdef CONFIG_PM +static int au1200fb_drv_suspend(struct device *dev, u32 state, u32 level) +{ + /* TODO */ + return 0; +} + +static int au1200fb_drv_resume(struct device *dev, u32 level) +{ + /* TODO */ + return 0; +} +#endif /* CONFIG_PM */ + +static struct device_driver au1200fb_driver = { + .name = "au1200-lcd", + .bus = &platform_bus_type, + .probe = au1200fb_drv_probe, + .remove = au1200fb_drv_remove, +#ifdef CONFIG_PM + .suspend = au1200fb_drv_suspend, + .resume = au1200fb_drv_resume, +#endif +}; + +/*-------------------------------------------------------------------------*/ + +/* Kernel driver */ + +static void au1200fb_setup(void) +{ + char* options = NULL; + char* this_opt; + int num_panels = ARRAY_SIZE(known_lcd_panels); + int panel_idx = -1; + + fb_get_options(DRIVER_NAME, &options); + + if (options) { + while ((this_opt = strsep(&options,",")) != NULL) { + /* Panel option - can be panel name, + * "bs" for board-switch, or number/index */ + if (!strncmp(this_opt, "panel:", 6)) { + int i; + long int li; + char *endptr; + this_opt += 6; + /* First check for index, which allows + * to short circuit this mess */ + li = simple_strtol(this_opt, &endptr, 0); + if (*endptr == '\0') { + panel_idx = (int)li; + } + else if (strcmp(this_opt, "bs") == 0) { + extern int board_au1200fb_panel(void); + panel_idx = board_au1200fb_panel(); + } + + else + for (i = 0; i < num_panels; i++) { + if (!strcmp(this_opt, known_lcd_panels[i].name)) { + panel_idx = i; + break; + } + } + + if ((panel_idx < 0) || (panel_idx >= num_panels)) { + print_warn("Panel %s not supported!", this_opt); + } + else + panel_index = panel_idx; + } + + else if (strncmp(this_opt, "nohwcursor", 10) == 0) { + nohwcursor = 1; + } + + /* Unsupported option */ + else { + print_warn("Unsupported option \"%s\"", this_opt); + } + } + } +} + +#ifdef CONFIG_PM +static int au1200fb_pm_callback(au1xxx_power_dev_t *dev, + au1xxx_request_t request, void *data) { + int retval = -1; + unsigned int d = 0; + unsigned int brightness = 0; + + if (request == AU1XXX_PM_SLEEP) { + board_au1200fb_panel_shutdown(); + } + else if (request == AU1XXX_PM_WAKEUP) { + if(dev->prev_state == SLEEP_STATE) + { + int plane; + au1200_setpanel(panel); + for (plane = 0; plane < CONFIG_FB_AU1200_DEVS; ++plane) { + struct au1200fb_device *fbdev; + fbdev = &_au1200fb_devices[plane]; + au1200fb_fb_set_par(&fbdev->fb_info); + } + } + + d = *((unsigned int*)data); + if(d <=10) brightness = 26; + else if(d<=20) brightness = 51; + else if(d<=30) brightness = 77; + else if(d<=40) brightness = 102; + else if(d<=50) brightness = 128; + else if(d<=60) brightness = 153; + else if(d<=70) brightness = 179; + else if(d<=80) brightness = 204; + else if(d<=90) brightness = 230; + else brightness = 255; + set_brightness(brightness); + } else if (request == AU1XXX_PM_GETSTATUS) { + return dev->cur_state; + } else if (request == AU1XXX_PM_ACCESS) { + if (dev->cur_state != SLEEP_STATE) + return retval; + else { + au1200_setpanel(panel); + } + } else if (request == AU1XXX_PM_IDLE) { + } else if (request == AU1XXX_PM_CLEANUP) { + } + + return retval; +} +#endif + +static int __init au1200fb_init(void) +{ + print_info("" DRIVER_DESC ""); + + /* Setup driver with options */ + au1200fb_setup(); + + /* Point to the panel selected */ + panel = &known_lcd_panels[panel_index]; + win = &windows[window_index]; + + printk(DRIVER_NAME ": Panel %d %s\n", panel_index, panel->name); + printk(DRIVER_NAME ": Win %d %s\n", window_index, win->name); + + /* Kickstart the panel, the framebuffers/windows come soon enough */ + au1200_setpanel(panel); + + #ifdef CONFIG_PM + LCD_pm_dev = new_au1xxx_power_device("LCD", &au1200fb_pm_callback, NULL); + if ( LCD_pm_dev == NULL) + printk(KERN_INFO "Unable to create a power management device entry for the au1200fb.\n"); + else + printk(KERN_INFO "Power management device entry for the au1200fb loaded.\n"); + #endif + + return driver_register(&au1200fb_driver); +} + +static void __exit au1200fb_cleanup(void) +{ + driver_unregister(&au1200fb_driver); +} + +module_init(au1200fb_init); +module_exit(au1200fb_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/au1200fb.h b/drivers/video/au1200fb.h new file mode 100644 index 00000000000..e2672714d8d --- /dev/null +++ b/drivers/video/au1200fb.h @@ -0,0 +1,572 @@ +/* + * BRIEF MODULE DESCRIPTION + * Hardware definitions for the Au1200 LCD controller + * + * Copyright 2004 AMD + * Author: AMD + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _AU1200LCD_H +#define _AU1200LCD_H + +/********************************************************************/ +#define AU1200_LCD_ADDR 0xB5000000 + +#define uint8 unsigned char +#define uint32 unsigned int + +struct au1200_lcd { + volatile uint32 reserved0; + volatile uint32 screen; + volatile uint32 backcolor; + volatile uint32 horztiming; + volatile uint32 verttiming; + volatile uint32 clkcontrol; + volatile uint32 pwmdiv; + volatile uint32 pwmhi; + volatile uint32 reserved1; + volatile uint32 winenable; + volatile uint32 colorkey; + volatile uint32 colorkeymsk; + struct + { + volatile uint32 cursorctrl; + volatile uint32 cursorpos; + volatile uint32 cursorcolor0; + volatile uint32 cursorcolor1; + volatile uint32 cursorcolor2; + uint32 cursorcolor3; + } hwc; + volatile uint32 intstatus; + volatile uint32 intenable; + volatile uint32 outmask; + volatile uint32 fifoctrl; + uint32 reserved2[(0x0100-0x0058)/4]; + struct + { + volatile uint32 winctrl0; + volatile uint32 winctrl1; + volatile uint32 winctrl2; + volatile uint32 winbuf0; + volatile uint32 winbuf1; + volatile uint32 winbufctrl; + uint32 winreserved0; + uint32 winreserved1; + } window[4]; + + uint32 reserved3[(0x0400-0x0180)/4]; + + volatile uint32 palette[(0x0800-0x0400)/4]; + + volatile uint8 cursorpattern[256]; +}; + +/* lcd_screen */ +#define LCD_SCREEN_SEN (1<<31) +#define LCD_SCREEN_SX (0x07FF<<19) +#define LCD_SCREEN_SY (0x07FF<< 8) +#define LCD_SCREEN_SWP (1<<7) +#define LCD_SCREEN_SWD (1<<6) +#define LCD_SCREEN_PT (7<<0) +#define LCD_SCREEN_PT_TFT (0<<0) +#define LCD_SCREEN_SX_N(WIDTH) ((WIDTH-1)<<19) +#define LCD_SCREEN_SY_N(HEIGHT) ((HEIGHT-1)<<8) +#define LCD_SCREEN_PT_CSTN (1<<0) +#define LCD_SCREEN_PT_CDSTN (2<<0) +#define LCD_SCREEN_PT_M8STN (3<<0) +#define LCD_SCREEN_PT_M4STN (4<<0) + +/* lcd_backcolor */ +#define LCD_BACKCOLOR_SBGR (0xFF<<16) +#define LCD_BACKCOLOR_SBGG (0xFF<<8) +#define LCD_BACKCOLOR_SBGB (0xFF<<0) +#define LCD_BACKCOLOR_SBGR_N(N) ((N)<<16) +#define LCD_BACKCOLOR_SBGG_N(N) ((N)<<8) +#define LCD_BACKCOLOR_SBGB_N(N) ((N)<<0) + +/* lcd_winenable */ +#define LCD_WINENABLE_WEN3 (1<<3) +#define LCD_WINENABLE_WEN2 (1<<2) +#define LCD_WINENABLE_WEN1 (1<<1) +#define LCD_WINENABLE_WEN0 (1<<0) + +/* lcd_colorkey */ +#define LCD_COLORKEY_CKR (0xFF<<16) +#define LCD_COLORKEY_CKG (0xFF<<8) +#define LCD_COLORKEY_CKB (0xFF<<0) +#define LCD_COLORKEY_CKR_N(N) ((N)<<16) +#define LCD_COLORKEY_CKG_N(N) ((N)<<8) +#define LCD_COLORKEY_CKB_N(N) ((N)<<0) + +/* lcd_colorkeymsk */ +#define LCD_COLORKEYMSK_CKMR (0xFF<<16) +#define LCD_COLORKEYMSK_CKMG (0xFF<<8) +#define LCD_COLORKEYMSK_CKMB (0xFF<<0) +#define LCD_COLORKEYMSK_CKMR_N(N) ((N)<<16) +#define LCD_COLORKEYMSK_CKMG_N(N) ((N)<<8) +#define LCD_COLORKEYMSK_CKMB_N(N) ((N)<<0) + +/* lcd windows control 0 */ +#define LCD_WINCTRL0_OX (0x07FF<<21) +#define LCD_WINCTRL0_OY (0x07FF<<10) +#define LCD_WINCTRL0_A (0x00FF<<2) +#define LCD_WINCTRL0_AEN (1<<1) +#define LCD_WINCTRL0_OX_N(N) ((N)<<21) +#define LCD_WINCTRL0_OY_N(N) ((N)<<10) +#define LCD_WINCTRL0_A_N(N) ((N)<<2) + +/* lcd windows control 1 */ +#define LCD_WINCTRL1_PRI (3<<30) +#define LCD_WINCTRL1_PIPE (1<<29) +#define LCD_WINCTRL1_FRM (0xF<<25) +#define LCD_WINCTRL1_CCO (1<<24) +#define LCD_WINCTRL1_PO (3<<22) +#define LCD_WINCTRL1_SZX (0x07FF<<11) +#define LCD_WINCTRL1_SZY (0x07FF<<0) +#define LCD_WINCTRL1_FRM_1BPP (0<<25) +#define LCD_WINCTRL1_FRM_2BPP (1<<25) +#define LCD_WINCTRL1_FRM_4BPP (2<<25) +#define LCD_WINCTRL1_FRM_8BPP (3<<25) +#define LCD_WINCTRL1_FRM_12BPP (4<<25) +#define LCD_WINCTRL1_FRM_16BPP655 (5<<25) +#define LCD_WINCTRL1_FRM_16BPP565 (6<<25) +#define LCD_WINCTRL1_FRM_16BPP556 (7<<25) +#define LCD_WINCTRL1_FRM_16BPPI1555 (8<<25) +#define LCD_WINCTRL1_FRM_16BPPI5551 (9<<25) +#define LCD_WINCTRL1_FRM_16BPPA1555 (10<<25) +#define LCD_WINCTRL1_FRM_16BPPA5551 (11<<25) +#define LCD_WINCTRL1_FRM_24BPP (12<<25) +#define LCD_WINCTRL1_FRM_32BPP (13<<25) +#define LCD_WINCTRL1_PRI_N(N) ((N)<<30) +#define LCD_WINCTRL1_PO_00 (0<<22) +#define LCD_WINCTRL1_PO_01 (1<<22) +#define LCD_WINCTRL1_PO_10 (2<<22) +#define LCD_WINCTRL1_PO_11 (3<<22) +#define LCD_WINCTRL1_SZX_N(N) ((N-1)<<11) +#define LCD_WINCTRL1_SZY_N(N) ((N-1)<<0) + +/* lcd windows control 2 */ +#define LCD_WINCTRL2_CKMODE (3<<24) +#define LCD_WINCTRL2_DBM (1<<23) +#define LCD_WINCTRL2_RAM (3<<21) +#define LCD_WINCTRL2_BX (0x1FFF<<8) +#define LCD_WINCTRL2_SCX (0xF<<4) +#define LCD_WINCTRL2_SCY (0xF<<0) +#define LCD_WINCTRL2_CKMODE_00 (0<<24) +#define LCD_WINCTRL2_CKMODE_01 (1<<24) +#define LCD_WINCTRL2_CKMODE_10 (2<<24) +#define LCD_WINCTRL2_CKMODE_11 (3<<24) +#define LCD_WINCTRL2_RAM_NONE (0<<21) +#define LCD_WINCTRL2_RAM_PALETTE (1<<21) +#define LCD_WINCTRL2_RAM_GAMMA (2<<21) +#define LCD_WINCTRL2_RAM_BUFFER (3<<21) +#define LCD_WINCTRL2_BX_N(N) ((N)<<8) +#define LCD_WINCTRL2_SCX_1 (0<<4) +#define LCD_WINCTRL2_SCX_2 (1<<4) +#define LCD_WINCTRL2_SCX_4 (2<<4) +#define LCD_WINCTRL2_SCY_1 (0<<0) +#define LCD_WINCTRL2_SCY_2 (1<<0) +#define LCD_WINCTRL2_SCY_4 (2<<0) + +/* lcd windows buffer control */ +#define LCD_WINBUFCTRL_DB (1<<1) +#define LCD_WINBUFCTRL_DBN (1<<0) + +/* lcd_intstatus, lcd_intenable */ +#define LCD_INT_IFO (0xF<<14) +#define LCD_INT_IFU (0xF<<10) +#define LCD_INT_OFO (1<<9) +#define LCD_INT_OFU (1<<8) +#define LCD_INT_WAIT (1<<3) +#define LCD_INT_SD (1<<2) +#define LCD_INT_SA (1<<1) +#define LCD_INT_SS (1<<0) + +/* lcd_horztiming */ +#define LCD_HORZTIMING_HND2 (0x1FF<<18) +#define LCD_HORZTIMING_HND1 (0x1FF<<9) +#define LCD_HORZTIMING_HPW (0x1FF<<0) +#define LCD_HORZTIMING_HND2_N(N)(((N)-1)<<18) +#define LCD_HORZTIMING_HND1_N(N)(((N)-1)<<9) +#define LCD_HORZTIMING_HPW_N(N) (((N)-1)<<0) + +/* lcd_verttiming */ +#define LCD_VERTTIMING_VND2 (0x1FF<<18) +#define LCD_VERTTIMING_VND1 (0x1FF<<9) +#define LCD_VERTTIMING_VPW (0x1FF<<0) +#define LCD_VERTTIMING_VND2_N(N)(((N)-1)<<18) +#define LCD_VERTTIMING_VND1_N(N)(((N)-1)<<9) +#define LCD_VERTTIMING_VPW_N(N) (((N)-1)<<0) + +/* lcd_clkcontrol */ +#define LCD_CLKCONTROL_EXT (1<<22) +#define LCD_CLKCONTROL_DELAY (3<<20) +#define LCD_CLKCONTROL_CDD (1<<19) +#define LCD_CLKCONTROL_IB (1<<18) +#define LCD_CLKCONTROL_IC (1<<17) +#define LCD_CLKCONTROL_IH (1<<16) +#define LCD_CLKCONTROL_IV (1<<15) +#define LCD_CLKCONTROL_BF (0x1F<<10) +#define LCD_CLKCONTROL_PCD (0x3FF<<0) +#define LCD_CLKCONTROL_BF_N(N) (((N)-1)<<10) +#define LCD_CLKCONTROL_PCD_N(N) ((N)<<0) + +/* lcd_pwmdiv */ +#define LCD_PWMDIV_EN (1<<31) +#define LCD_PWMDIV_PWMDIV (0x1FFFF<<0) +#define LCD_PWMDIV_PWMDIV_N(N) ((N)<<0) + +/* lcd_pwmhi */ +#define LCD_PWMHI_PWMHI1 (0xFFFF<<16) +#define LCD_PWMHI_PWMHI0 (0xFFFF<<0) +#define LCD_PWMHI_PWMHI1_N(N) ((N)<<16) +#define LCD_PWMHI_PWMHI0_N(N) ((N)<<0) + +/* lcd_hwccon */ +#define LCD_HWCCON_EN (1<<0) + +/* lcd_cursorpos */ +#define LCD_CURSORPOS_HWCXOFF (0x1F<<27) +#define LCD_CURSORPOS_HWCXPOS (0x07FF<<16) +#define LCD_CURSORPOS_HWCYOFF (0x1F<<11) +#define LCD_CURSORPOS_HWCYPOS (0x07FF<<0) +#define LCD_CURSORPOS_HWCXOFF_N(N) ((N)<<27) +#define LCD_CURSORPOS_HWCXPOS_N(N) ((N)<<16) +#define LCD_CURSORPOS_HWCYOFF_N(N) ((N)<<11) +#define LCD_CURSORPOS_HWCYPOS_N(N) ((N)<<0) + +/* lcd_cursorcolor */ +#define LCD_CURSORCOLOR_HWCA (0xFF<<24) +#define LCD_CURSORCOLOR_HWCR (0xFF<<16) +#define LCD_CURSORCOLOR_HWCG (0xFF<<8) +#define LCD_CURSORCOLOR_HWCB (0xFF<<0) +#define LCD_CURSORCOLOR_HWCA_N(N) ((N)<<24) +#define LCD_CURSORCOLOR_HWCR_N(N) ((N)<<16) +#define LCD_CURSORCOLOR_HWCG_N(N) ((N)<<8) +#define LCD_CURSORCOLOR_HWCB_N(N) ((N)<<0) + +/* lcd_fifoctrl */ +#define LCD_FIFOCTRL_F3IF (1<<29) +#define LCD_FIFOCTRL_F3REQ (0x1F<<24) +#define LCD_FIFOCTRL_F2IF (1<<29) +#define LCD_FIFOCTRL_F2REQ (0x1F<<16) +#define LCD_FIFOCTRL_F1IF (1<<29) +#define LCD_FIFOCTRL_F1REQ (0x1F<<8) +#define LCD_FIFOCTRL_F0IF (1<<29) +#define LCD_FIFOCTRL_F0REQ (0x1F<<0) +#define LCD_FIFOCTRL_F3REQ_N(N) ((N-1)<<24) +#define LCD_FIFOCTRL_F2REQ_N(N) ((N-1)<<16) +#define LCD_FIFOCTRL_F1REQ_N(N) ((N-1)<<8) +#define LCD_FIFOCTRL_F0REQ_N(N) ((N-1)<<0) + +/* lcd_outmask */ +#define LCD_OUTMASK_MASK (0x00FFFFFF) + +/********************************************************************/ +#endif /* _AU1200LCD_H */ +/* + * BRIEF MODULE DESCRIPTION + * Hardware definitions for the Au1200 LCD controller + * + * Copyright 2004 AMD + * Author: AMD + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _AU1200LCD_H +#define _AU1200LCD_H + +/********************************************************************/ +#define AU1200_LCD_ADDR 0xB5000000 + +#define uint8 unsigned char +#define uint32 unsigned int + +struct au1200_lcd { + volatile uint32 reserved0; + volatile uint32 screen; + volatile uint32 backcolor; + volatile uint32 horztiming; + volatile uint32 verttiming; + volatile uint32 clkcontrol; + volatile uint32 pwmdiv; + volatile uint32 pwmhi; + volatile uint32 reserved1; + volatile uint32 winenable; + volatile uint32 colorkey; + volatile uint32 colorkeymsk; + struct + { + volatile uint32 cursorctrl; + volatile uint32 cursorpos; + volatile uint32 cursorcolor0; + volatile uint32 cursorcolor1; + volatile uint32 cursorcolor2; + uint32 cursorcolor3; + } hwc; + volatile uint32 intstatus; + volatile uint32 intenable; + volatile uint32 outmask; + volatile uint32 fifoctrl; + uint32 reserved2[(0x0100-0x0058)/4]; + struct + { + volatile uint32 winctrl0; + volatile uint32 winctrl1; + volatile uint32 winctrl2; + volatile uint32 winbuf0; + volatile uint32 winbuf1; + volatile uint32 winbufctrl; + uint32 winreserved0; + uint32 winreserved1; + } window[4]; + + uint32 reserved3[(0x0400-0x0180)/4]; + + volatile uint32 palette[(0x0800-0x0400)/4]; + + volatile uint8 cursorpattern[256]; +}; + +/* lcd_screen */ +#define LCD_SCREEN_SEN (1<<31) +#define LCD_SCREEN_SX (0x07FF<<19) +#define LCD_SCREEN_SY (0x07FF<< 8) +#define LCD_SCREEN_SWP (1<<7) +#define LCD_SCREEN_SWD (1<<6) +#define LCD_SCREEN_PT (7<<0) +#define LCD_SCREEN_PT_TFT (0<<0) +#define LCD_SCREEN_SX_N(WIDTH) ((WIDTH-1)<<19) +#define LCD_SCREEN_SY_N(HEIGHT) ((HEIGHT-1)<<8) +#define LCD_SCREEN_PT_CSTN (1<<0) +#define LCD_SCREEN_PT_CDSTN (2<<0) +#define LCD_SCREEN_PT_M8STN (3<<0) +#define LCD_SCREEN_PT_M4STN (4<<0) + +/* lcd_backcolor */ +#define LCD_BACKCOLOR_SBGR (0xFF<<16) +#define LCD_BACKCOLOR_SBGG (0xFF<<8) +#define LCD_BACKCOLOR_SBGB (0xFF<<0) +#define LCD_BACKCOLOR_SBGR_N(N) ((N)<<16) +#define LCD_BACKCOLOR_SBGG_N(N) ((N)<<8) +#define LCD_BACKCOLOR_SBGB_N(N) ((N)<<0) + +/* lcd_winenable */ +#define LCD_WINENABLE_WEN3 (1<<3) +#define LCD_WINENABLE_WEN2 (1<<2) +#define LCD_WINENABLE_WEN1 (1<<1) +#define LCD_WINENABLE_WEN0 (1<<0) + +/* lcd_colorkey */ +#define LCD_COLORKEY_CKR (0xFF<<16) +#define LCD_COLORKEY_CKG (0xFF<<8) +#define LCD_COLORKEY_CKB (0xFF<<0) +#define LCD_COLORKEY_CKR_N(N) ((N)<<16) +#define LCD_COLORKEY_CKG_N(N) ((N)<<8) +#define LCD_COLORKEY_CKB_N(N) ((N)<<0) + +/* lcd_colorkeymsk */ +#define LCD_COLORKEYMSK_CKMR (0xFF<<16) +#define LCD_COLORKEYMSK_CKMG (0xFF<<8) +#define LCD_COLORKEYMSK_CKMB (0xFF<<0) +#define LCD_COLORKEYMSK_CKMR_N(N) ((N)<<16) +#define LCD_COLORKEYMSK_CKMG_N(N) ((N)<<8) +#define LCD_COLORKEYMSK_CKMB_N(N) ((N)<<0) + +/* lcd windows control 0 */ +#define LCD_WINCTRL0_OX (0x07FF<<21) +#define LCD_WINCTRL0_OY (0x07FF<<10) +#define LCD_WINCTRL0_A (0x00FF<<2) +#define LCD_WINCTRL0_AEN (1<<1) +#define LCD_WINCTRL0_OX_N(N) ((N)<<21) +#define LCD_WINCTRL0_OY_N(N) ((N)<<10) +#define LCD_WINCTRL0_A_N(N) ((N)<<2) + +/* lcd windows control 1 */ +#define LCD_WINCTRL1_PRI (3<<30) +#define LCD_WINCTRL1_PIPE (1<<29) +#define LCD_WINCTRL1_FRM (0xF<<25) +#define LCD_WINCTRL1_CCO (1<<24) +#define LCD_WINCTRL1_PO (3<<22) +#define LCD_WINCTRL1_SZX (0x07FF<<11) +#define LCD_WINCTRL1_SZY (0x07FF<<0) +#define LCD_WINCTRL1_FRM_1BPP (0<<25) +#define LCD_WINCTRL1_FRM_2BPP (1<<25) +#define LCD_WINCTRL1_FRM_4BPP (2<<25) +#define LCD_WINCTRL1_FRM_8BPP (3<<25) +#define LCD_WINCTRL1_FRM_12BPP (4<<25) +#define LCD_WINCTRL1_FRM_16BPP655 (5<<25) +#define LCD_WINCTRL1_FRM_16BPP565 (6<<25) +#define LCD_WINCTRL1_FRM_16BPP556 (7<<25) +#define LCD_WINCTRL1_FRM_16BPPI1555 (8<<25) +#define LCD_WINCTRL1_FRM_16BPPI5551 (9<<25) +#define LCD_WINCTRL1_FRM_16BPPA1555 (10<<25) +#define LCD_WINCTRL1_FRM_16BPPA5551 (11<<25) +#define LCD_WINCTRL1_FRM_24BPP (12<<25) +#define LCD_WINCTRL1_FRM_32BPP (13<<25) +#define LCD_WINCTRL1_PRI_N(N) ((N)<<30) +#define LCD_WINCTRL1_PO_00 (0<<22) +#define LCD_WINCTRL1_PO_01 (1<<22) +#define LCD_WINCTRL1_PO_10 (2<<22) +#define LCD_WINCTRL1_PO_11 (3<<22) +#define LCD_WINCTRL1_SZX_N(N) ((N-1)<<11) +#define LCD_WINCTRL1_SZY_N(N) ((N-1)<<0) + +/* lcd windows control 2 */ +#define LCD_WINCTRL2_CKMODE (3<<24) +#define LCD_WINCTRL2_DBM (1<<23) +#define LCD_WINCTRL2_RAM (3<<21) +#define LCD_WINCTRL2_BX (0x1FFF<<8) +#define LCD_WINCTRL2_SCX (0xF<<4) +#define LCD_WINCTRL2_SCY (0xF<<0) +#define LCD_WINCTRL2_CKMODE_00 (0<<24) +#define LCD_WINCTRL2_CKMODE_01 (1<<24) +#define LCD_WINCTRL2_CKMODE_10 (2<<24) +#define LCD_WINCTRL2_CKMODE_11 (3<<24) +#define LCD_WINCTRL2_RAM_NONE (0<<21) +#define LCD_WINCTRL2_RAM_PALETTE (1<<21) +#define LCD_WINCTRL2_RAM_GAMMA (2<<21) +#define LCD_WINCTRL2_RAM_BUFFER (3<<21) +#define LCD_WINCTRL2_BX_N(N) ((N)<<8) +#define LCD_WINCTRL2_SCX_1 (0<<4) +#define LCD_WINCTRL2_SCX_2 (1<<4) +#define LCD_WINCTRL2_SCX_4 (2<<4) +#define LCD_WINCTRL2_SCY_1 (0<<0) +#define LCD_WINCTRL2_SCY_2 (1<<0) +#define LCD_WINCTRL2_SCY_4 (2<<0) + +/* lcd windows buffer control */ +#define LCD_WINBUFCTRL_DB (1<<1) +#define LCD_WINBUFCTRL_DBN (1<<0) + +/* lcd_intstatus, lcd_intenable */ +#define LCD_INT_IFO (0xF<<14) +#define LCD_INT_IFU (0xF<<10) +#define LCD_INT_OFO (1<<9) +#define LCD_INT_OFU (1<<8) +#define LCD_INT_WAIT (1<<3) +#define LCD_INT_SD (1<<2) +#define LCD_INT_SA (1<<1) +#define LCD_INT_SS (1<<0) + +/* lcd_horztiming */ +#define LCD_HORZTIMING_HND2 (0x1FF<<18) +#define LCD_HORZTIMING_HND1 (0x1FF<<9) +#define LCD_HORZTIMING_HPW (0x1FF<<0) +#define LCD_HORZTIMING_HND2_N(N)(((N)-1)<<18) +#define LCD_HORZTIMING_HND1_N(N)(((N)-1)<<9) +#define LCD_HORZTIMING_HPW_N(N) (((N)-1)<<0) + +/* lcd_verttiming */ +#define LCD_VERTTIMING_VND2 (0x1FF<<18) +#define LCD_VERTTIMING_VND1 (0x1FF<<9) +#define LCD_VERTTIMING_VPW (0x1FF<<0) +#define LCD_VERTTIMING_VND2_N(N)(((N)-1)<<18) +#define LCD_VERTTIMING_VND1_N(N)(((N)-1)<<9) +#define LCD_VERTTIMING_VPW_N(N) (((N)-1)<<0) + +/* lcd_clkcontrol */ +#define LCD_CLKCONTROL_EXT (1<<22) +#define LCD_CLKCONTROL_DELAY (3<<20) +#define LCD_CLKCONTROL_CDD (1<<19) +#define LCD_CLKCONTROL_IB (1<<18) +#define LCD_CLKCONTROL_IC (1<<17) +#define LCD_CLKCONTROL_IH (1<<16) +#define LCD_CLKCONTROL_IV (1<<15) +#define LCD_CLKCONTROL_BF (0x1F<<10) +#define LCD_CLKCONTROL_PCD (0x3FF<<0) +#define LCD_CLKCONTROL_BF_N(N) (((N)-1)<<10) +#define LCD_CLKCONTROL_PCD_N(N) ((N)<<0) + +/* lcd_pwmdiv */ +#define LCD_PWMDIV_EN (1<<31) +#define LCD_PWMDIV_PWMDIV (0x1FFFF<<0) +#define LCD_PWMDIV_PWMDIV_N(N) ((N)<<0) + +/* lcd_pwmhi */ +#define LCD_PWMHI_PWMHI1 (0xFFFF<<16) +#define LCD_PWMHI_PWMHI0 (0xFFFF<<0) +#define LCD_PWMHI_PWMHI1_N(N) ((N)<<16) +#define LCD_PWMHI_PWMHI0_N(N) ((N)<<0) + +/* lcd_hwccon */ +#define LCD_HWCCON_EN (1<<0) + +/* lcd_cursorpos */ +#define LCD_CURSORPOS_HWCXOFF (0x1F<<27) +#define LCD_CURSORPOS_HWCXPOS (0x07FF<<16) +#define LCD_CURSORPOS_HWCYOFF (0x1F<<11) +#define LCD_CURSORPOS_HWCYPOS (0x07FF<<0) +#define LCD_CURSORPOS_HWCXOFF_N(N) ((N)<<27) +#define LCD_CURSORPOS_HWCXPOS_N(N) ((N)<<16) +#define LCD_CURSORPOS_HWCYOFF_N(N) ((N)<<11) +#define LCD_CURSORPOS_HWCYPOS_N(N) ((N)<<0) + +/* lcd_cursorcolor */ +#define LCD_CURSORCOLOR_HWCA (0xFF<<24) +#define LCD_CURSORCOLOR_HWCR (0xFF<<16) +#define LCD_CURSORCOLOR_HWCG (0xFF<<8) +#define LCD_CURSORCOLOR_HWCB (0xFF<<0) +#define LCD_CURSORCOLOR_HWCA_N(N) ((N)<<24) +#define LCD_CURSORCOLOR_HWCR_N(N) ((N)<<16) +#define LCD_CURSORCOLOR_HWCG_N(N) ((N)<<8) +#define LCD_CURSORCOLOR_HWCB_N(N) ((N)<<0) + +/* lcd_fifoctrl */ +#define LCD_FIFOCTRL_F3IF (1<<29) +#define LCD_FIFOCTRL_F3REQ (0x1F<<24) +#define LCD_FIFOCTRL_F2IF (1<<29) +#define LCD_FIFOCTRL_F2REQ (0x1F<<16) +#define LCD_FIFOCTRL_F1IF (1<<29) +#define LCD_FIFOCTRL_F1REQ (0x1F<<8) +#define LCD_FIFOCTRL_F0IF (1<<29) +#define LCD_FIFOCTRL_F0REQ (0x1F<<0) +#define LCD_FIFOCTRL_F3REQ_N(N) ((N-1)<<24) +#define LCD_FIFOCTRL_F2REQ_N(N) ((N-1)<<16) +#define LCD_FIFOCTRL_F1REQ_N(N) ((N-1)<<8) +#define LCD_FIFOCTRL_F0REQ_N(N) ((N-1)<<0) + +/* lcd_outmask */ +#define LCD_OUTMASK_MASK (0x00FFFFFF) + +/********************************************************************/ +#endif /* _AU1200LCD_H */ diff --git a/drivers/video/chipsfb.c b/drivers/video/chipsfb.c index bc061d4ec78..72ff6bf75e5 100644 --- a/drivers/video/chipsfb.c +++ b/drivers/video/chipsfb.c @@ -178,8 +178,6 @@ struct chips_init_reg { unsigned char data; }; -#define N_ELTS(x) (sizeof(x) / sizeof(x[0])) - static struct chips_init_reg chips_init_sr[] = { { 0x00, 0x03 }, { 0x01, 0x01 }, @@ -287,18 +285,18 @@ static void __init chips_hw_init(void) { int i; - for (i = 0; i < N_ELTS(chips_init_xr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_xr); ++i) write_xr(chips_init_xr[i].addr, chips_init_xr[i].data); outb(0x29, 0x3c2); /* set misc output reg */ - for (i = 0; i < N_ELTS(chips_init_sr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_sr); ++i) write_sr(chips_init_sr[i].addr, chips_init_sr[i].data); - for (i = 0; i < N_ELTS(chips_init_gr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_gr); ++i) write_gr(chips_init_gr[i].addr, chips_init_gr[i].data); - for (i = 0; i < N_ELTS(chips_init_ar); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_ar); ++i) write_ar(chips_init_ar[i].addr, chips_init_ar[i].data); - for (i = 0; i < N_ELTS(chips_init_cr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_cr); ++i) write_cr(chips_init_cr[i].addr, chips_init_cr[i].data); - for (i = 0; i < N_ELTS(chips_init_fr); ++i) + for (i = 0; i < ARRAY_SIZE(chips_init_fr); ++i) write_fr(chips_init_fr[i].addr, chips_init_fr[i].data); } diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig index 6ee449858a5..4444bef68fb 100644 --- a/drivers/video/console/Kconfig +++ b/drivers/video/console/Kconfig @@ -26,6 +26,30 @@ config VGA_CONSOLE # fi # fi +config VGACON_SOFT_SCROLLBACK + bool "Enable Scrollback Buffer in System RAM" + depends on VGA_CONSOLE + default n + help + The scrollback buffer of the standard VGA console is located in + the VGA RAM. The size of this RAM is fixed and is quite small. + If you require a larger scrollback buffer, this can be placed in + System RAM which is dynamically allocated during intialization. + Placing the scrollback buffer in System RAM will slightly slow + down the console. + + If you want this feature, say 'Y' here and enter the amount of + RAM to allocate for this buffer. If unsure, say 'N'. + +config VGACON_SOFT_SCROLLBACK_SIZE + int "Scrollback Buffer Size (in KB)" + depends on VGACON_SOFT_SCROLLBACK + default "64" + help + Enter the amount of System RAM to allocate for the scrollback + buffer. Each 64KB will give you approximately 16 80x25 + screenfuls of scrollback buffer + config VIDEO_SELECT bool "Video mode selection support" depends on X86 && VGA_CONSOLE diff --git a/drivers/video/console/fonts.c b/drivers/video/console/fonts.c index 4fd07d9eca0..0cc1bfda76a 100644 --- a/drivers/video/console/fonts.c +++ b/drivers/video/console/fonts.c @@ -66,7 +66,7 @@ static const struct font_desc *fonts[] = { #endif }; -#define num_fonts (sizeof(fonts)/sizeof(*fonts)) +#define num_fonts ARRAY_SIZE(fonts) #ifdef NO_FONTS #error No fonts configured. diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c index 762c7a59314..e99fe30e568 100644 --- a/drivers/video/console/newport_con.c +++ b/drivers/video/console/newport_con.c @@ -149,7 +149,7 @@ static inline void newport_clear_lines(int ystart, int yend, int ci) newport_clear_screen(0, ystart, 1280 + 63, yend, ci); } -void newport_reset(void) +static void newport_reset(void) { unsigned short treg; int i; @@ -193,7 +193,7 @@ void newport_reset(void) * calculate the actual screen size by reading * the video timing out of the VC2 */ -void newport_get_screensize(void) +static void newport_get_screensize(void) { int i, cols; unsigned short ventry, treg; diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c index 5a86978537d..d5a04b68c4d 100644 --- a/drivers/video/console/vgacon.c +++ b/drivers/video/console/vgacon.c @@ -93,7 +93,6 @@ static u8 vgacon_build_attr(struct vc_data *c, u8 color, u8 intensity, static void vgacon_invert_region(struct vc_data *c, u16 * p, int count); static unsigned long vgacon_uni_pagedir[2]; - /* Description of the hardware situation */ static unsigned long vga_vram_base; /* Base of video memory */ static unsigned long vga_vram_end; /* End of video memory */ @@ -161,6 +160,201 @@ static inline void write_vga(unsigned char reg, unsigned int val) spin_unlock_irqrestore(&vga_lock, flags); } +static inline void vga_set_mem_top(struct vc_data *c) +{ + write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2); +} + +#ifdef CONFIG_VGACON_SOFT_SCROLLBACK +#include <linux/bootmem.h> +/* software scrollback */ +static void *vgacon_scrollback; +static int vgacon_scrollback_tail; +static int vgacon_scrollback_size; +static int vgacon_scrollback_rows; +static int vgacon_scrollback_cnt; +static int vgacon_scrollback_cur; +static int vgacon_scrollback_save; +static int vgacon_scrollback_restore; + +static void vgacon_scrollback_init(int pitch) +{ + int rows = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024/pitch; + + if (vgacon_scrollback) { + vgacon_scrollback_cnt = 0; + vgacon_scrollback_tail = 0; + vgacon_scrollback_cur = 0; + vgacon_scrollback_rows = rows - 1; + vgacon_scrollback_size = rows * pitch; + } +} + +static void __init vgacon_scrollback_startup(void) +{ + vgacon_scrollback = alloc_bootmem(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE + * 1024); + vgacon_scrollback_init(vga_video_num_columns * 2); +} + +static void vgacon_scrollback_update(struct vc_data *c, int t, int count) +{ + void *p; + + if (!vgacon_scrollback_size || c->vc_num != fg_console) + return; + + p = (void *) (c->vc_origin + t * c->vc_size_row); + + while (count--) { + scr_memcpyw(vgacon_scrollback + vgacon_scrollback_tail, + p, c->vc_size_row); + vgacon_scrollback_cnt++; + p += c->vc_size_row; + vgacon_scrollback_tail += c->vc_size_row; + + if (vgacon_scrollback_tail >= vgacon_scrollback_size) + vgacon_scrollback_tail = 0; + + if (vgacon_scrollback_cnt > vgacon_scrollback_rows) + vgacon_scrollback_cnt = vgacon_scrollback_rows; + + vgacon_scrollback_cur = vgacon_scrollback_cnt; + } +} + +static void vgacon_restore_screen(struct vc_data *c) +{ + vgacon_scrollback_save = 0; + + if (!vga_is_gfx && !vgacon_scrollback_restore) { + scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf, + c->vc_screenbuf_size > vga_vram_size ? + vga_vram_size : c->vc_screenbuf_size); + vgacon_scrollback_restore = 1; + vgacon_scrollback_cur = vgacon_scrollback_cnt; + } +} + +static int vgacon_scrolldelta(struct vc_data *c, int lines) +{ + int start, end, count, soff, diff; + void *d, *s; + + if (!lines) { + c->vc_visible_origin = c->vc_origin; + vga_set_mem_top(c); + return 1; + } + + if (!vgacon_scrollback) + return 1; + + if (!vgacon_scrollback_save) { + vgacon_cursor(c, CM_ERASE); + vgacon_save_screen(c); + vgacon_scrollback_save = 1; + } + + vgacon_scrollback_restore = 0; + start = vgacon_scrollback_cur + lines; + end = start + abs(lines); + + if (start < 0) + start = 0; + + if (start > vgacon_scrollback_cnt) + start = vgacon_scrollback_cnt; + + if (end < 0) + end = 0; + + if (end > vgacon_scrollback_cnt) + end = vgacon_scrollback_cnt; + + vgacon_scrollback_cur = start; + count = end - start; + soff = vgacon_scrollback_tail - ((vgacon_scrollback_cnt - end) * + c->vc_size_row); + soff -= count * c->vc_size_row; + + if (soff < 0) + soff += vgacon_scrollback_size; + + count = vgacon_scrollback_cnt - start; + + if (count > c->vc_rows) + count = c->vc_rows; + + diff = c->vc_rows - count; + + d = (void *) c->vc_origin; + s = (void *) c->vc_screenbuf; + + while (count--) { + scr_memcpyw(d, vgacon_scrollback + soff, c->vc_size_row); + d += c->vc_size_row; + soff += c->vc_size_row; + + if (soff >= vgacon_scrollback_size) + soff = 0; + } + + if (diff == c->vc_rows) { + vgacon_cursor(c, CM_MOVE); + } else { + while (diff--) { + scr_memcpyw(d, s, c->vc_size_row); + d += c->vc_size_row; + s += c->vc_size_row; + } + } + + return 1; +} +#else +#define vgacon_scrollback_startup(...) do { } while (0) +#define vgacon_scrollback_init(...) do { } while (0) +#define vgacon_scrollback_update(...) do { } while (0) + +static void vgacon_restore_screen(struct vc_data *c) +{ + if (c->vc_origin != c->vc_visible_origin) + vgacon_scrolldelta(c, 0); +} + +static int vgacon_scrolldelta(struct vc_data *c, int lines) +{ + if (!lines) /* Turn scrollback off */ + c->vc_visible_origin = c->vc_origin; + else { + int margin = c->vc_size_row * 4; + int ul, we, p, st; + + if (vga_rolled_over > + (c->vc_scr_end - vga_vram_base) + margin) { + ul = c->vc_scr_end - vga_vram_base; + we = vga_rolled_over + c->vc_size_row; + } else { + ul = 0; + we = vga_vram_size; + } + p = (c->vc_visible_origin - vga_vram_base - ul + we) % we + + lines * c->vc_size_row; + st = (c->vc_origin - vga_vram_base - ul + we) % we; + if (st < 2 * margin) + margin = 0; + if (p < margin) + p = 0; + if (p > st - margin) + p = st; + c->vc_visible_origin = vga_vram_base + (p + ul) % we; + } + vga_set_mem_top(c); + return 1; +} +#endif /* CONFIG_VGACON_SOFT_SCROLLBACK */ + static const char __init *vgacon_startup(void) { const char *display_desc = NULL; @@ -330,7 +524,7 @@ static const char __init *vgacon_startup(void) vgacon_xres = ORIG_VIDEO_COLS * VGA_FONTWIDTH; vgacon_yres = vga_scan_lines; - + vgacon_scrollback_startup(); return display_desc; } @@ -357,11 +551,6 @@ static void vgacon_init(struct vc_data *c, int init) con_set_default_unimap(c); } -static inline void vga_set_mem_top(struct vc_data *c) -{ - write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2); -} - static void vgacon_deinit(struct vc_data *c) { /* When closing the last console, reset video origin */ @@ -433,29 +622,37 @@ static void vgacon_set_cursor_size(int xpos, int from, int to) cursor_size_lastto = to; spin_lock_irqsave(&vga_lock, flags); - outb_p(0x0a, vga_video_port_reg); /* Cursor start */ - curs = inb_p(vga_video_port_val); - outb_p(0x0b, vga_video_port_reg); /* Cursor end */ - cure = inb_p(vga_video_port_val); + if (vga_video_type >= VIDEO_TYPE_VGAC) { + outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); + curs = inb_p(vga_video_port_val); + outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); + cure = inb_p(vga_video_port_val); + } else { + curs = 0; + cure = 0; + } curs = (curs & 0xc0) | from; cure = (cure & 0xe0) | to; - outb_p(0x0a, vga_video_port_reg); /* Cursor start */ + outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); outb_p(curs, vga_video_port_val); - outb_p(0x0b, vga_video_port_reg); /* Cursor end */ + outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); outb_p(cure, vga_video_port_val); spin_unlock_irqrestore(&vga_lock, flags); } static void vgacon_cursor(struct vc_data *c, int mode) { - if (c->vc_origin != c->vc_visible_origin) - vgacon_scrolldelta(c, 0); + vgacon_restore_screen(c); + switch (mode) { case CM_ERASE: write_vga(14, (c->vc_pos - vga_vram_base) / 2); - vgacon_set_cursor_size(c->vc_x, 31, 30); + if (vga_video_type >= VIDEO_TYPE_VGAC) + vgacon_set_cursor_size(c->vc_x, 31, 30); + else + vgacon_set_cursor_size(c->vc_x, 31, 31); break; case CM_MOVE: @@ -493,7 +690,10 @@ static void vgacon_cursor(struct vc_data *c, int mode) 10 ? 1 : 2)); break; case CUR_NONE: - vgacon_set_cursor_size(c->vc_x, 31, 30); + if (vga_video_type >= VIDEO_TYPE_VGAC) + vgacon_set_cursor_size(c->vc_x, 31, 30); + else + vgacon_set_cursor_size(c->vc_x, 31, 31); break; default: vgacon_set_cursor_size(c->vc_x, 1, @@ -595,6 +795,7 @@ static int vgacon_switch(struct vc_data *c) vgacon_doresize(c, c->vc_cols, c->vc_rows); } + vgacon_scrollback_init(c->vc_size_row); return 0; /* Redrawing not needed */ } @@ -1062,37 +1263,6 @@ static int vgacon_resize(struct vc_data *c, unsigned int width, return 0; } -static int vgacon_scrolldelta(struct vc_data *c, int lines) -{ - if (!lines) /* Turn scrollback off */ - c->vc_visible_origin = c->vc_origin; - else { - int margin = c->vc_size_row * 4; - int ul, we, p, st; - - if (vga_rolled_over > - (c->vc_scr_end - vga_vram_base) + margin) { - ul = c->vc_scr_end - vga_vram_base; - we = vga_rolled_over + c->vc_size_row; - } else { - ul = 0; - we = vga_vram_size; - } - p = (c->vc_visible_origin - vga_vram_base - ul + we) % we + - lines * c->vc_size_row; - st = (c->vc_origin - vga_vram_base - ul + we) % we; - if (st < 2 * margin) - margin = 0; - if (p < margin) - p = 0; - if (p > st - margin) - p = st; - c->vc_visible_origin = vga_vram_base + (p + ul) % we; - } - vga_set_mem_top(c); - return 1; -} - static int vgacon_set_origin(struct vc_data *c) { if (vga_is_gfx || /* We don't play origin tricks in graphic modes */ @@ -1135,15 +1305,14 @@ static int vgacon_scroll(struct vc_data *c, int t, int b, int dir, if (t || b != c->vc_rows || vga_is_gfx) return 0; - if (c->vc_origin != c->vc_visible_origin) - vgacon_scrolldelta(c, 0); - if (!vga_hardscroll_enabled || lines >= c->vc_rows / 2) return 0; + vgacon_restore_screen(c); oldo = c->vc_origin; delta = lines * c->vc_size_row; if (dir == SM_UP) { + vgacon_scrollback_update(c, t, lines); if (c->vc_scr_end + delta >= vga_vram_end) { scr_memcpyw((u16 *) vga_vram_base, (u16 *) (oldo + delta), diff --git a/drivers/video/fbcmap.c b/drivers/video/fbcmap.c index c32a2a50bfa..1f98392a43b 100644 --- a/drivers/video/fbcmap.c +++ b/drivers/video/fbcmap.c @@ -85,7 +85,7 @@ static struct fb_cmap default_16_colors = { * Allocates memory for a colormap @cmap. @len is the * number of entries in the palette. * - * Returns -1 errno on error, or zero on success. + * Returns negative errno on error, or zero on success. * */ @@ -116,7 +116,7 @@ int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp) fail: fb_dealloc_cmap(cmap); - return -1; + return -ENOMEM; } /** diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 07d882b1439..b1a8dca7643 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -55,7 +55,7 @@ #define FBPIXMAPSIZE (1024 * 8) -static struct notifier_block *fb_notifier_list; +static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); struct fb_info *registered_fb[FB_MAX]; int num_registered_fb; @@ -784,7 +784,7 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) event.info = info; event.data = &mode1; - ret = notifier_call_chain(&fb_notifier_list, + ret = blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_MODE_DELETE, &event); } @@ -830,8 +830,8 @@ fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var) info->flags &= ~FBINFO_MISC_USEREVENT; event.info = info; - notifier_call_chain(&fb_notifier_list, evnt, - &event); + blocking_notifier_call_chain(&fb_notifier_list, + evnt, &event); } } } @@ -854,7 +854,8 @@ fb_blank(struct fb_info *info, int blank) event.info = info; event.data = ␣ - notifier_call_chain(&fb_notifier_list, FB_EVENT_BLANK, &event); + blocking_notifier_call_chain(&fb_notifier_list, + FB_EVENT_BLANK, &event); } return ret; @@ -925,7 +926,7 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, con2fb.framebuffer = -1; event.info = info; event.data = &con2fb; - notifier_call_chain(&fb_notifier_list, + blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_GET_CONSOLE_MAP, &event); return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; @@ -944,7 +945,7 @@ fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, return -EINVAL; event.info = info; event.data = &con2fb; - return notifier_call_chain(&fb_notifier_list, + return blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_SET_CONSOLE_MAP, &event); case FBIOBLANK: @@ -1324,7 +1325,7 @@ register_framebuffer(struct fb_info *fb_info) devfs_mk_cdev(MKDEV(FB_MAJOR, i), S_IFCHR | S_IRUGO | S_IWUGO, "fb/%d", i); event.info = fb_info; - notifier_call_chain(&fb_notifier_list, + blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_FB_REGISTERED, &event); return 0; } @@ -1366,7 +1367,7 @@ unregister_framebuffer(struct fb_info *fb_info) */ int fb_register_client(struct notifier_block *nb) { - return notifier_chain_register(&fb_notifier_list, nb); + return blocking_notifier_chain_register(&fb_notifier_list, nb); } /** @@ -1375,7 +1376,7 @@ int fb_register_client(struct notifier_block *nb) */ int fb_unregister_client(struct notifier_block *nb) { - return notifier_chain_unregister(&fb_notifier_list, nb); + return blocking_notifier_chain_unregister(&fb_notifier_list, nb); } /** @@ -1393,11 +1394,13 @@ void fb_set_suspend(struct fb_info *info, int state) event.info = info; if (state) { - notifier_call_chain(&fb_notifier_list, FB_EVENT_SUSPEND, &event); + blocking_notifier_call_chain(&fb_notifier_list, + FB_EVENT_SUSPEND, &event); info->state = FBINFO_STATE_SUSPENDED; } else { info->state = FBINFO_STATE_RUNNING; - notifier_call_chain(&fb_notifier_list, FB_EVENT_RESUME, &event); + blocking_notifier_call_chain(&fb_notifier_list, + FB_EVENT_RESUME, &event); } } @@ -1469,7 +1472,7 @@ int fb_new_modelist(struct fb_info *info) if (!list_empty(&info->modelist)) { event.info = info; - err = notifier_call_chain(&fb_notifier_list, + err = blocking_notifier_call_chain(&fb_notifier_list, FB_EVENT_NEW_MODELIST, &event); } @@ -1495,7 +1498,7 @@ int fb_con_duit(struct fb_info *info, int event, void *data) evnt.info = info; evnt.data = data; - return notifier_call_chain(&fb_notifier_list, event, &evnt); + return blocking_notifier_call_chain(&fb_notifier_list, event, &evnt); } EXPORT_SYMBOL(fb_con_duit); diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c index 7c74e7325d9..53beeb4a999 100644 --- a/drivers/video/fbmon.c +++ b/drivers/video/fbmon.c @@ -1281,7 +1281,7 @@ int fb_validate_mode(const struct fb_var_screeninfo *var, struct fb_info *info) -EINVAL : 0; } -#if defined(__i386__) +#if defined(CONFIG_FB_FIRMWARE_EDID) && defined(__i386__) #include <linux/pci.h> /* @@ -1311,11 +1311,11 @@ const unsigned char *fb_firmware_edid(struct device *device) { return NULL; } -#endif /* _i386_ */ +#endif +EXPORT_SYMBOL(fb_firmware_edid); EXPORT_SYMBOL(fb_parse_edid); EXPORT_SYMBOL(fb_edid_to_monspecs); -EXPORT_SYMBOL(fb_firmware_edid); EXPORT_SYMBOL(fb_get_mode); EXPORT_SYMBOL(fb_validate_mode); EXPORT_SYMBOL(fb_destroy_modedb); diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c index 6d26057337e..b72b05250a9 100644 --- a/drivers/video/fbsysfs.c +++ b/drivers/video/fbsysfs.c @@ -348,7 +348,7 @@ static ssize_t store_cmap(struct class_device *class_device, const char *buf, fb_copy_cmap(&umap, &fb_info->cmap); fb_dealloc_cmap(&umap); - return rc; + return rc ?: count; } for (i = 0; i < length; i++) { u16 red, blue, green, tsp; @@ -367,7 +367,7 @@ static ssize_t store_cmap(struct class_device *class_device, const char *buf, if (transp) fb_info->cmap.transp[i] = tsp; } - return 0; + return count; } static ssize_t show_cmap(struct class_device *class_device, char *buf) diff --git a/drivers/video/geode/Kconfig b/drivers/video/geode/Kconfig index 42fb9a89a79..4e173ef20a7 100644 --- a/drivers/video/geode/Kconfig +++ b/drivers/video/geode/Kconfig @@ -8,9 +8,24 @@ config FB_GEODE Say 'Y' here to allow you to select framebuffer drivers for the AMD Geode family of processors. +config FB_GEODE_GX + tristate "AMD Geode GX framebuffer support (EXPERIMENTAL)" + depends on FB && FB_GEODE && EXPERIMENTAL + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + ---help--- + Framebuffer driver for the display controller integrated into the + AMD Geode GX processors. + + To compile this driver as a module, choose M here: the module will be + called gxfb. + + If unsure, say N. + config FB_GEODE_GX1 tristate "AMD Geode GX1 framebuffer support (EXPERIMENTAL)" - depends on FB_GEODE && EXPERIMENTAL + depends on FB && FB_GEODE && EXPERIMENTAL select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT diff --git a/drivers/video/geode/Makefile b/drivers/video/geode/Makefile index 13ad501ea99..f896565bc31 100644 --- a/drivers/video/geode/Makefile +++ b/drivers/video/geode/Makefile @@ -1,5 +1,7 @@ # Makefile for the Geode family framebuffer drivers obj-$(CONFIG_FB_GEODE_GX1) += gx1fb.o +obj-$(CONFIG_FB_GEODE_GX) += gxfb.o -gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o +gx1fb-objs := gx1fb_core.o display_gx1.o video_cs5530.o +gxfb-objs := gxfb_core.o display_gx.o video_gx.o diff --git a/drivers/video/geode/display_gx.c b/drivers/video/geode/display_gx.c new file mode 100644 index 00000000000..825c3405f5c --- /dev/null +++ b/drivers/video/geode/display_gx.c @@ -0,0 +1,156 @@ +/* + * Geode GX display controller. + * + * Copyright (C) 2005 Arcom Control Systems Ltd. + * + * Portions from AMD's original 2.4 driver: + * Copyright (C) 2004 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by * the + * Free Software Foundation; either version 2 of the License, or * (at your + * option) any later version. + */ +#include <linux/spinlock.h> +#include <linux/fb.h> +#include <linux/delay.h> +#include <asm/io.h> +#include <asm/div64.h> +#include <asm/delay.h> + +#include "geodefb.h" +#include "display_gx.h" + +int gx_frame_buffer_size(void) +{ + /* Assuming 16 MiB. */ + return 16*1024*1024; +} + +int gx_line_delta(int xres, int bpp) +{ + /* Must be a multiple of 8 bytes. */ + return (xres * (bpp >> 3) + 7) & ~0x7; +} + +static void gx_set_mode(struct fb_info *info) +{ + struct geodefb_par *par = info->par; + u32 gcfg, dcfg; + int hactive, hblankstart, hsyncstart, hsyncend, hblankend, htotal; + int vactive, vblankstart, vsyncstart, vsyncend, vblankend, vtotal; + + /* Unlock the display controller registers. */ + readl(par->dc_regs + DC_UNLOCK); + writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK); + + gcfg = readl(par->dc_regs + DC_GENERAL_CFG); + dcfg = readl(par->dc_regs + DC_DISPLAY_CFG); + + /* Disable the timing generator. */ + dcfg &= ~(DC_DCFG_TGEN); + writel(dcfg, par->dc_regs + DC_DISPLAY_CFG); + + /* Wait for pending memory requests before disabling the FIFO load. */ + udelay(100); + + /* Disable FIFO load and compression. */ + gcfg &= ~(DC_GCFG_DFLE | DC_GCFG_CMPE | DC_GCFG_DECE); + writel(gcfg, par->dc_regs + DC_GENERAL_CFG); + + /* Setup DCLK and its divisor. */ + par->vid_ops->set_dclk(info); + + /* + * Setup new mode. + */ + + /* Clear all unused feature bits. */ + gcfg &= DC_GCFG_YUVM | DC_GCFG_VDSE; + dcfg = 0; + + /* Set FIFO priority (default 6/5) and enable. */ + /* FIXME: increase fifo priority for 1280x1024 and higher modes? */ + gcfg |= (6 << DC_GCFG_DFHPEL_POS) | (5 << DC_GCFG_DFHPSL_POS) | DC_GCFG_DFLE; + + /* Framebuffer start offset. */ + writel(0, par->dc_regs + DC_FB_ST_OFFSET); + + /* Line delta and line buffer length. */ + writel(info->fix.line_length >> 3, par->dc_regs + DC_GFX_PITCH); + writel(((info->var.xres * info->var.bits_per_pixel/8) >> 3) + 2, + par->dc_regs + DC_LINE_SIZE); + + /* Enable graphics and video data and unmask address lines. */ + dcfg |= DC_DCFG_GDEN | DC_DCFG_VDEN | DC_DCFG_A20M | DC_DCFG_A18M; + + /* Set pixel format. */ + switch (info->var.bits_per_pixel) { + case 8: + dcfg |= DC_DCFG_DISP_MODE_8BPP; + break; + case 16: + dcfg |= DC_DCFG_DISP_MODE_16BPP; + dcfg |= DC_DCFG_16BPP_MODE_565; + break; + case 32: + dcfg |= DC_DCFG_DISP_MODE_24BPP; + dcfg |= DC_DCFG_PALB; + break; + } + + /* Enable timing generator. */ + dcfg |= DC_DCFG_TGEN; + + /* Horizontal and vertical timings. */ + hactive = info->var.xres; + hblankstart = hactive; + hsyncstart = hblankstart + info->var.right_margin; + hsyncend = hsyncstart + info->var.hsync_len; + hblankend = hsyncend + info->var.left_margin; + htotal = hblankend; + + vactive = info->var.yres; + vblankstart = vactive; + vsyncstart = vblankstart + info->var.lower_margin; + vsyncend = vsyncstart + info->var.vsync_len; + vblankend = vsyncend + info->var.upper_margin; + vtotal = vblankend; + + writel((hactive - 1) | ((htotal - 1) << 16), par->dc_regs + DC_H_ACTIVE_TIMING); + writel((hblankstart - 1) | ((hblankend - 1) << 16), par->dc_regs + DC_H_BLANK_TIMING); + writel((hsyncstart - 1) | ((hsyncend - 1) << 16), par->dc_regs + DC_H_SYNC_TIMING); + + writel((vactive - 1) | ((vtotal - 1) << 16), par->dc_regs + DC_V_ACTIVE_TIMING); + writel((vblankstart - 1) | ((vblankend - 1) << 16), par->dc_regs + DC_V_BLANK_TIMING); + writel((vsyncstart - 1) | ((vsyncend - 1) << 16), par->dc_regs + DC_V_SYNC_TIMING); + + /* Write final register values. */ + writel(dcfg, par->dc_regs + DC_DISPLAY_CFG); + writel(gcfg, par->dc_regs + DC_GENERAL_CFG); + + par->vid_ops->configure_display(info); + + /* Relock display controller registers */ + writel(0, par->dc_regs + DC_UNLOCK); +} + +static void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno, + unsigned red, unsigned green, unsigned blue) +{ + struct geodefb_par *par = info->par; + int val; + + /* Hardware palette is in RGB 8-8-8 format. */ + val = (red << 8) & 0xff0000; + val |= (green) & 0x00ff00; + val |= (blue >> 8) & 0x0000ff; + + writel(regno, par->dc_regs + DC_PAL_ADDRESS); + writel(val, par->dc_regs + DC_PAL_DATA); +} + +struct geode_dc_ops gx_dc_ops = { + .set_mode = gx_set_mode, + .set_palette_reg = gx_set_hw_palette_reg, +}; diff --git a/drivers/video/geode/display_gx.h b/drivers/video/geode/display_gx.h new file mode 100644 index 00000000000..86c62336130 --- /dev/null +++ b/drivers/video/geode/display_gx.h @@ -0,0 +1,96 @@ +/* + * Geode GX display controller + * + * Copyright (C) 2006 Arcom Control Systems Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __DISPLAY_GX_H__ +#define __DISPLAY_GX_H__ + +int gx_frame_buffer_size(void); +int gx_line_delta(int xres, int bpp); + +extern struct geode_dc_ops gx_dc_ops; + +/* Display controller registers */ + +#define DC_UNLOCK 0x00 +# define DC_UNLOCK_CODE 0x00004758 + +#define DC_GENERAL_CFG 0x04 +# define DC_GCFG_DFLE 0x00000001 +# define DC_GCFG_CURE 0x00000002 +# define DC_GCFG_ICNE 0x00000004 +# define DC_GCFG_VIDE 0x00000008 +# define DC_GCFG_CMPE 0x00000020 +# define DC_GCFG_DECE 0x00000040 +# define DC_GCFG_VGAE 0x00000080 +# define DC_GCFG_DFHPSL_MASK 0x00000F00 +# define DC_GCFG_DFHPSL_POS 8 +# define DC_GCFG_DFHPEL_MASK 0x0000F000 +# define DC_GCFG_DFHPEL_POS 12 +# define DC_GCFG_STFM 0x00010000 +# define DC_GCFG_FDTY 0x00020000 +# define DC_GCFG_VGAFT 0x00040000 +# define DC_GCFG_VDSE 0x00080000 +# define DC_GCFG_YUVM 0x00100000 +# define DC_GCFG_VFSL 0x00800000 +# define DC_GCFG_SIGE 0x01000000 +# define DC_GCFG_SGRE 0x02000000 +# define DC_GCFG_SGFR 0x04000000 +# define DC_GCFG_CRC_MODE 0x08000000 +# define DC_GCFG_DIAG 0x10000000 +# define DC_GCFG_CFRW 0x20000000 + +#define DC_DISPLAY_CFG 0x08 +# define DC_DCFG_TGEN 0x00000001 +# define DC_DCFG_GDEN 0x00000008 +# define DC_DCFG_VDEN 0x00000010 +# define DC_DCFG_TRUP 0x00000040 +# define DC_DCFG_DISP_MODE_MASK 0x00000300 +# define DC_DCFG_DISP_MODE_8BPP 0x00000000 +# define DC_DCFG_DISP_MODE_16BPP 0x00000100 +# define DC_DCFG_DISP_MODE_24BPP 0x00000200 +# define DC_DCFG_16BPP_MODE_MASK 0x00000c00 +# define DC_DCFG_16BPP_MODE_565 0x00000000 +# define DC_DCFG_16BPP_MODE_555 0x00000100 +# define DC_DCFG_16BPP_MODE_444 0x00000200 +# define DC_DCFG_DCEN 0x00080000 +# define DC_DCFG_PALB 0x02000000 +# define DC_DCFG_FRLK 0x04000000 +# define DC_DCFG_VISL 0x08000000 +# define DC_DCFG_FRSL 0x20000000 +# define DC_DCFG_A18M 0x40000000 +# define DC_DCFG_A20M 0x80000000 + +#define DC_FB_ST_OFFSET 0x10 + +#define DC_LINE_SIZE 0x30 +# define DC_LINE_SIZE_FB_LINE_SIZE_MASK 0x000007ff +# define DC_LINE_SIZE_FB_LINE_SIZE_POS 0 +# define DC_LINE_SIZE_CB_LINE_SIZE_MASK 0x007f0000 +# define DC_LINE_SIZE_CB_LINE_SIZE_POS 16 +# define DC_LINE_SIZE_VID_LINE_SIZE_MASK 0xff000000 +# define DC_LINE_SIZE_VID_LINE_SIZE_POS 24 + +#define DC_GFX_PITCH 0x34 +# define DC_GFX_PITCH_FB_PITCH_MASK 0x0000ffff +# define DC_GFX_PITCH_FB_PITCH_POS 0 +# define DC_GFX_PITCH_CB_PITCH_MASK 0xffff0000 +# define DC_GFX_PITCH_CB_PITCH_POS 16 + +#define DC_H_ACTIVE_TIMING 0x40 +#define DC_H_BLANK_TIMING 0x44 +#define DC_H_SYNC_TIMING 0x48 +#define DC_V_ACTIVE_TIMING 0x50 +#define DC_V_BLANK_TIMING 0x54 +#define DC_V_SYNC_TIMING 0x58 + +#define DC_PAL_ADDRESS 0x70 +#define DC_PAL_DATA 0x74 + +#endif /* !__DISPLAY_GX1_H__ */ diff --git a/drivers/video/geode/gxfb_core.c b/drivers/video/geode/gxfb_core.c new file mode 100644 index 00000000000..89c34b15f5d --- /dev/null +++ b/drivers/video/geode/gxfb_core.c @@ -0,0 +1,423 @@ +/* + * Geode GX framebuffer driver. + * + * Copyright (C) 2006 Arcom Control Systems Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * + * This driver assumes that the BIOS has created a virtual PCI device header + * for the video device. The PCI header is assumed to contain the following + * BARs: + * + * BAR0 - framebuffer memory + * BAR1 - graphics processor registers + * BAR2 - display controller registers + * BAR3 - video processor and flat panel control registers. + * + * 16 MiB of framebuffer memory is assumed to be available. + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/pci.h> + +#include "geodefb.h" +#include "display_gx.h" +#include "video_gx.h" + +static char mode_option[32] = "640x480-16@60"; + +/* Modes relevant to the GX (taken from modedb.c) */ +static const struct fb_videomode __initdata gx_modedb[] = { + /* 640x480-60 VESA */ + { NULL, 60, 640, 480, 39682, 48, 16, 33, 10, 96, 2, + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 640x480-75 VESA */ + { NULL, 75, 640, 480, 31746, 120, 16, 16, 01, 64, 3, + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 640x480-85 VESA */ + { NULL, 85, 640, 480, 27777, 80, 56, 25, 01, 56, 3, + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 800x600-60 VESA */ + { NULL, 60, 800, 600, 25000, 88, 40, 23, 01, 128, 4, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 800x600-75 VESA */ + { NULL, 75, 800, 600, 20202, 160, 16, 21, 01, 80, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 800x600-85 VESA */ + { NULL, 85, 800, 600, 17761, 152, 32, 27, 01, 64, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1024x768-60 VESA */ + { NULL, 60, 1024, 768, 15384, 160, 24, 29, 3, 136, 6, + 0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1024x768-75 VESA */ + { NULL, 75, 1024, 768, 12690, 176, 16, 28, 1, 96, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1024x768-85 VESA */ + { NULL, 85, 1024, 768, 10582, 208, 48, 36, 1, 96, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1280x960-60 VESA */ + { NULL, 60, 1280, 960, 9259, 312, 96, 36, 1, 112, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1280x960-85 VESA */ + { NULL, 85, 1280, 960, 6734, 224, 64, 47, 1, 160, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1280x1024-60 VESA */ + { NULL, 60, 1280, 1024, 9259, 248, 48, 38, 1, 112, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1280x1024-75 VESA */ + { NULL, 75, 1280, 1024, 7407, 248, 16, 38, 1, 144, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1280x1024-85 VESA */ + { NULL, 85, 1280, 1024, 6349, 224, 64, 44, 1, 160, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1600x1200-60 VESA */ + { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1600x1200-75 VESA */ + { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, + /* 1600x1200-85 VESA */ + { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA }, +}; + +static int gxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + if (var->xres > 1600 || var->yres > 1200) + return -EINVAL; + if ((var->xres > 1280 || var->yres > 1024) && var->bits_per_pixel > 16) + return -EINVAL; + + if (var->bits_per_pixel == 32) { + var->red.offset = 16; var->red.length = 8; + var->green.offset = 8; var->green.length = 8; + var->blue.offset = 0; var->blue.length = 8; + } else if (var->bits_per_pixel == 16) { + var->red.offset = 11; var->red.length = 5; + var->green.offset = 5; var->green.length = 6; + var->blue.offset = 0; var->blue.length = 5; + } else if (var->bits_per_pixel == 8) { + var->red.offset = 0; var->red.length = 8; + var->green.offset = 0; var->green.length = 8; + var->blue.offset = 0; var->blue.length = 8; + } else + return -EINVAL; + var->transp.offset = 0; var->transp.length = 0; + + /* Enough video memory? */ + if (gx_line_delta(var->xres, var->bits_per_pixel) * var->yres > info->fix.smem_len) + return -EINVAL; + + /* FIXME: Check timing parameters here? */ + + return 0; +} + +static int gxfb_set_par(struct fb_info *info) +{ + struct geodefb_par *par = info->par; + + if (info->var.bits_per_pixel > 8) { + info->fix.visual = FB_VISUAL_TRUECOLOR; + fb_dealloc_cmap(&info->cmap); + } else { + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0); + } + + info->fix.line_length = gx_line_delta(info->var.xres, info->var.bits_per_pixel); + + par->dc_ops->set_mode(info); + + return 0; +} + +static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) +{ + chan &= 0xffff; + chan >>= 16 - bf->length; + return chan << bf->offset; +} + +static int gxfb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, + struct fb_info *info) +{ + struct geodefb_par *par = info->par; + + if (info->var.grayscale) { + /* grayscale = 0.30*R + 0.59*G + 0.11*B */ + red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; + } + + /* Truecolor has hardware independent palette */ + if (info->fix.visual == FB_VISUAL_TRUECOLOR) { + u32 *pal = info->pseudo_palette; + u32 v; + + if (regno >= 16) + return -EINVAL; + + v = chan_to_field(red, &info->var.red); + v |= chan_to_field(green, &info->var.green); + v |= chan_to_field(blue, &info->var.blue); + + pal[regno] = v; + } else { + if (regno >= 256) + return -EINVAL; + + par->dc_ops->set_palette_reg(info, regno, red, green, blue); + } + + return 0; +} + +static int gxfb_blank(int blank_mode, struct fb_info *info) +{ + struct geodefb_par *par = info->par; + + return par->vid_ops->blank_display(info, blank_mode); +} + +static int __init gxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev) +{ + struct geodefb_par *par = info->par; + int fb_len; + int ret; + + ret = pci_enable_device(dev); + if (ret < 0) + return ret; + + ret = pci_request_region(dev, 3, "gxfb (video processor)"); + if (ret < 0) + return ret; + par->vid_regs = ioremap(pci_resource_start(dev, 3), + pci_resource_len(dev, 3)); + if (!par->vid_regs) + return -ENOMEM; + + ret = pci_request_region(dev, 2, "gxfb (display controller)"); + if (ret < 0) + return ret; + par->dc_regs = ioremap(pci_resource_start(dev, 2), pci_resource_len(dev, 2)); + if (!par->dc_regs) + return -ENOMEM; + + ret = pci_request_region(dev, 0, "gxfb (framebuffer)"); + if (ret < 0) + return ret; + if ((fb_len = gx_frame_buffer_size()) < 0) + return -ENOMEM; + info->fix.smem_start = pci_resource_start(dev, 0); + info->fix.smem_len = fb_len; + info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); + if (!info->screen_base) + return -ENOMEM; + + dev_info(&dev->dev, "%d Kibyte of video memory at 0x%lx\n", + info->fix.smem_len / 1024, info->fix.smem_start); + + return 0; +} + +static struct fb_ops gxfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = gxfb_check_var, + .fb_set_par = gxfb_set_par, + .fb_setcolreg = gxfb_setcolreg, + .fb_blank = gxfb_blank, + /* No HW acceleration for now. */ + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +static struct fb_info * __init gxfb_init_fbinfo(struct device *dev) +{ + struct geodefb_par *par; + struct fb_info *info; + + /* Alloc enough space for the pseudo palette. */ + info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, dev); + if (!info) + return NULL; + + par = info->par; + + strcpy(info->fix.id, "Geode GX"); + + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.type_aux = 0; + info->fix.xpanstep = 0; + info->fix.ypanstep = 0; + info->fix.ywrapstep = 0; + info->fix.accel = FB_ACCEL_NONE; + + info->var.nonstd = 0; + info->var.activate = FB_ACTIVATE_NOW; + info->var.height = -1; + info->var.width = -1; + info->var.accel_flags = 0; + info->var.vmode = FB_VMODE_NONINTERLACED; + + info->fbops = &gxfb_ops; + info->flags = FBINFO_DEFAULT; + info->node = -1; + + info->pseudo_palette = (void *)par + sizeof(struct geodefb_par); + + info->var.grayscale = 0; + + return info; +} + +static int __init gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct geodefb_par *par; + struct fb_info *info; + int ret; + + info = gxfb_init_fbinfo(&pdev->dev); + if (!info) + return -ENOMEM; + par = info->par; + + /* GX display controller and GX video device. */ + par->dc_ops = &gx_dc_ops; + par->vid_ops = &gx_vid_ops; + + if ((ret = gxfb_map_video_memory(info, pdev)) < 0) { + dev_err(&pdev->dev, "failed to map frame buffer or controller registers\n"); + goto err; + } + + ret = fb_find_mode(&info->var, info, mode_option, + gx_modedb, ARRAY_SIZE(gx_modedb), NULL, 16); + if (ret == 0 || ret == 4) { + dev_err(&pdev->dev, "could not find valid video mode\n"); + ret = -EINVAL; + goto err; + } + + /* Clear the frame buffer of garbage. */ + memset_io(info->screen_base, 0, info->fix.smem_len); + + gxfb_check_var(&info->var, info); + gxfb_set_par(info); + + if (register_framebuffer(info) < 0) { + ret = -EINVAL; + goto err; + } + pci_set_drvdata(pdev, info); + printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id); + return 0; + + err: + if (info->screen_base) { + iounmap(info->screen_base); + pci_release_region(pdev, 0); + } + if (par->vid_regs) { + iounmap(par->vid_regs); + pci_release_region(pdev, 3); + } + if (par->dc_regs) { + iounmap(par->dc_regs); + pci_release_region(pdev, 2); + } + + pci_disable_device(pdev); + + if (info) + framebuffer_release(info); + return ret; +} + +static void gxfb_remove(struct pci_dev *pdev) +{ + struct fb_info *info = pci_get_drvdata(pdev); + struct geodefb_par *par = info->par; + + unregister_framebuffer(info); + + iounmap((void __iomem *)info->screen_base); + pci_release_region(pdev, 0); + + iounmap(par->vid_regs); + pci_release_region(pdev, 3); + + iounmap(par->dc_regs); + pci_release_region(pdev, 2); + + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + + framebuffer_release(info); +} + +static struct pci_device_id gxfb_id_table[] = { + { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_VIDEO, + PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16, + 0xff0000, 0 }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, gxfb_id_table); + +static struct pci_driver gxfb_driver = { + .name = "gxfb", + .id_table = gxfb_id_table, + .probe = gxfb_probe, + .remove = gxfb_remove, +}; + +static int __init gxfb_init(void) +{ +#ifndef MODULE + if (fb_get_options("gxfb", NULL)) + return -ENODEV; +#endif + return pci_register_driver(&gxfb_driver); +} + +static void __exit gxfb_cleanup(void) +{ + pci_unregister_driver(&gxfb_driver); +} + +module_init(gxfb_init); +module_exit(gxfb_cleanup); + +module_param_string(mode, mode_option, sizeof(mode_option), 0444); +MODULE_PARM_DESC(mode, "video mode (<x>x<y>[-<bpp>][@<refr>])"); + +MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode GX"); +MODULE_LICENSE("GPL"); diff --git a/drivers/video/geode/video_gx.c b/drivers/video/geode/video_gx.c new file mode 100644 index 00000000000..2b2a7880ea7 --- /dev/null +++ b/drivers/video/geode/video_gx.c @@ -0,0 +1,262 @@ +/* + * Geode GX video processor device. + * + * Copyright (C) 2006 Arcom Control Systems Ltd. + * + * Portions from AMD's original 2.4 driver: + * Copyright (C) 2004 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/fb.h> +#include <linux/delay.h> +#include <asm/io.h> +#include <asm/delay.h> +#include <asm/msr.h> + +#include "geodefb.h" +#include "video_gx.h" + + +/* + * Tables of register settings for various DOTCLKs. + */ +struct gx_pll_entry { + long pixclock; /* ps */ + u32 sys_rstpll_bits; + u32 dotpll_value; +}; + +#define POSTDIV3 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3) +#define PREMULT2 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPREMULT2) +#define PREDIV2 ((u32)MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3) + +static const struct gx_pll_entry gx_pll_table_48MHz[] = { + { 40123, POSTDIV3, 0x00000BF2 }, /* 24.9230 */ + { 39721, 0, 0x00000037 }, /* 25.1750 */ + { 35308, POSTDIV3|PREMULT2, 0x00000B1A }, /* 28.3220 */ + { 31746, POSTDIV3, 0x000002D2 }, /* 31.5000 */ + { 27777, POSTDIV3|PREMULT2, 0x00000FE2 }, /* 36.0000 */ + { 26666, POSTDIV3, 0x0000057A }, /* 37.5000 */ + { 25000, POSTDIV3, 0x0000030A }, /* 40.0000 */ + { 22271, 0, 0x00000063 }, /* 44.9000 */ + { 20202, 0, 0x0000054B }, /* 49.5000 */ + { 20000, 0, 0x0000026E }, /* 50.0000 */ + { 19860, PREMULT2, 0x00000037 }, /* 50.3500 */ + { 18518, POSTDIV3|PREMULT2, 0x00000B0D }, /* 54.0000 */ + { 17777, 0, 0x00000577 }, /* 56.2500 */ + { 17733, 0, 0x000007F7 }, /* 56.3916 */ + { 17653, 0, 0x0000057B }, /* 56.6444 */ + { 16949, PREMULT2, 0x00000707 }, /* 59.0000 */ + { 15873, POSTDIV3|PREMULT2, 0x00000B39 }, /* 63.0000 */ + { 15384, POSTDIV3|PREMULT2, 0x00000B45 }, /* 65.0000 */ + { 14814, POSTDIV3|PREMULT2, 0x00000FC1 }, /* 67.5000 */ + { 14124, POSTDIV3, 0x00000561 }, /* 70.8000 */ + { 13888, POSTDIV3, 0x000007E1 }, /* 72.0000 */ + { 13426, PREMULT2, 0x00000F4A }, /* 74.4810 */ + { 13333, 0, 0x00000052 }, /* 75.0000 */ + { 12698, 0, 0x00000056 }, /* 78.7500 */ + { 12500, POSTDIV3|PREMULT2, 0x00000709 }, /* 80.0000 */ + { 11135, PREMULT2, 0x00000262 }, /* 89.8000 */ + { 10582, 0, 0x000002D2 }, /* 94.5000 */ + { 10101, PREMULT2, 0x00000B4A }, /* 99.0000 */ + { 10000, PREMULT2, 0x00000036 }, /* 100.0000 */ + { 9259, 0, 0x000007E2 }, /* 108.0000 */ + { 8888, 0, 0x000007F6 }, /* 112.5000 */ + { 7692, POSTDIV3|PREMULT2, 0x00000FB0 }, /* 130.0000 */ + { 7407, POSTDIV3|PREMULT2, 0x00000B50 }, /* 135.0000 */ + { 6349, 0, 0x00000055 }, /* 157.5000 */ + { 6172, 0, 0x000009C1 }, /* 162.0000 */ + { 5787, PREMULT2, 0x0000002D }, /* 172.798 */ + { 5698, 0, 0x000002C1 }, /* 175.5000 */ + { 5291, 0, 0x000002D1 }, /* 189.0000 */ + { 4938, 0, 0x00000551 }, /* 202.5000 */ + { 4357, 0, 0x0000057D }, /* 229.5000 */ +}; + +static const struct gx_pll_entry gx_pll_table_14MHz[] = { + { 39721, 0, 0x00000037 }, /* 25.1750 */ + { 35308, 0, 0x00000B7B }, /* 28.3220 */ + { 31746, 0, 0x000004D3 }, /* 31.5000 */ + { 27777, 0, 0x00000BE3 }, /* 36.0000 */ + { 26666, 0, 0x0000074F }, /* 37.5000 */ + { 25000, 0, 0x0000050B }, /* 40.0000 */ + { 22271, 0, 0x00000063 }, /* 44.9000 */ + { 20202, 0, 0x0000054B }, /* 49.5000 */ + { 20000, 0, 0x0000026E }, /* 50.0000 */ + { 19860, 0, 0x000007C3 }, /* 50.3500 */ + { 18518, 0, 0x000007E3 }, /* 54.0000 */ + { 17777, 0, 0x00000577 }, /* 56.2500 */ + { 17733, 0, 0x000002FB }, /* 56.3916 */ + { 17653, 0, 0x0000057B }, /* 56.6444 */ + { 16949, 0, 0x0000058B }, /* 59.0000 */ + { 15873, 0, 0x0000095E }, /* 63.0000 */ + { 15384, 0, 0x0000096A }, /* 65.0000 */ + { 14814, 0, 0x00000BC2 }, /* 67.5000 */ + { 14124, 0, 0x0000098A }, /* 70.8000 */ + { 13888, 0, 0x00000BE2 }, /* 72.0000 */ + { 13333, 0, 0x00000052 }, /* 75.0000 */ + { 12698, 0, 0x00000056 }, /* 78.7500 */ + { 12500, 0, 0x0000050A }, /* 80.0000 */ + { 11135, 0, 0x0000078E }, /* 89.8000 */ + { 10582, 0, 0x000002D2 }, /* 94.5000 */ + { 10101, 0, 0x000011F6 }, /* 99.0000 */ + { 10000, 0, 0x0000054E }, /* 100.0000 */ + { 9259, 0, 0x000007E2 }, /* 108.0000 */ + { 8888, 0, 0x000002FA }, /* 112.5000 */ + { 7692, 0, 0x00000BB1 }, /* 130.0000 */ + { 7407, 0, 0x00000975 }, /* 135.0000 */ + { 6349, 0, 0x00000055 }, /* 157.5000 */ + { 6172, 0, 0x000009C1 }, /* 162.0000 */ + { 5698, 0, 0x000002C1 }, /* 175.5000 */ + { 5291, 0, 0x00000539 }, /* 189.0000 */ + { 4938, 0, 0x00000551 }, /* 202.5000 */ + { 4357, 0, 0x0000057D }, /* 229.5000 */ +}; + +static void gx_set_dclk_frequency(struct fb_info *info) +{ + const struct gx_pll_entry *pll_table; + int pll_table_len; + int i, best_i; + long min, diff; + u64 dotpll, sys_rstpll; + int timeout = 1000; + + /* Rev. 1 Geode GXs use a 14 MHz reference clock instead of 48 MHz. */ + if (cpu_data->x86_mask == 1) { + pll_table = gx_pll_table_14MHz; + pll_table_len = ARRAY_SIZE(gx_pll_table_14MHz); + } else { + pll_table = gx_pll_table_48MHz; + pll_table_len = ARRAY_SIZE(gx_pll_table_48MHz); + } + + /* Search the table for the closest pixclock. */ + best_i = 0; + min = abs(pll_table[0].pixclock - info->var.pixclock); + for (i = 1; i < pll_table_len; i++) { + diff = abs(pll_table[i].pixclock - info->var.pixclock); + if (diff < min) { + min = diff; + best_i = i; + } + } + + rdmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll); + rdmsrl(MSR_GLCP_DOTPLL, dotpll); + + /* Program new M, N and P. */ + dotpll &= 0x00000000ffffffffull; + dotpll |= (u64)pll_table[best_i].dotpll_value << 32; + dotpll |= MSR_GLCP_DOTPLL_DOTRESET; + dotpll &= ~MSR_GLCP_DOTPLL_BYPASS; + + wrmsrl(MSR_GLCP_DOTPLL, dotpll); + + /* Program dividers. */ + sys_rstpll &= ~( MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 + | MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 + | MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 ); + sys_rstpll |= pll_table[best_i].sys_rstpll_bits; + + wrmsrl(MSR_GLCP_SYS_RSTPLL, sys_rstpll); + + /* Clear reset bit to start PLL. */ + dotpll &= ~(MSR_GLCP_DOTPLL_DOTRESET); + wrmsrl(MSR_GLCP_DOTPLL, dotpll); + + /* Wait for LOCK bit. */ + do { + rdmsrl(MSR_GLCP_DOTPLL, dotpll); + } while (timeout-- && !(dotpll & MSR_GLCP_DOTPLL_LOCK)); +} + +static void gx_configure_display(struct fb_info *info) +{ + struct geodefb_par *par = info->par; + u32 dcfg, fp_pm; + + dcfg = readl(par->vid_regs + GX_DCFG); + + /* Clear bits from existing mode. */ + dcfg &= ~(GX_DCFG_CRT_SYNC_SKW_MASK + | GX_DCFG_CRT_HSYNC_POL | GX_DCFG_CRT_VSYNC_POL + | GX_DCFG_VSYNC_EN | GX_DCFG_HSYNC_EN); + + /* Set default sync skew. */ + dcfg |= GX_DCFG_CRT_SYNC_SKW_DFLT; + + /* Enable hsync and vsync. */ + dcfg |= GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN; + + /* Sync polarities. */ + if (info->var.sync & FB_SYNC_HOR_HIGH_ACT) + dcfg |= GX_DCFG_CRT_HSYNC_POL; + if (info->var.sync & FB_SYNC_VERT_HIGH_ACT) + dcfg |= GX_DCFG_CRT_VSYNC_POL; + + writel(dcfg, par->vid_regs + GX_DCFG); + + /* Power on flat panel. */ + fp_pm = readl(par->vid_regs + GX_FP_PM); + fp_pm |= GX_FP_PM_P; + writel(fp_pm, par->vid_regs + GX_FP_PM); +} + +static int gx_blank_display(struct fb_info *info, int blank_mode) +{ + struct geodefb_par *par = info->par; + u32 dcfg, fp_pm; + int blank, hsync, vsync; + + /* CRT power saving modes. */ + switch (blank_mode) { + case FB_BLANK_UNBLANK: + blank = 0; hsync = 1; vsync = 1; + break; + case FB_BLANK_NORMAL: + blank = 1; hsync = 1; vsync = 1; + break; + case FB_BLANK_VSYNC_SUSPEND: + blank = 1; hsync = 1; vsync = 0; + break; + case FB_BLANK_HSYNC_SUSPEND: + blank = 1; hsync = 0; vsync = 1; + break; + case FB_BLANK_POWERDOWN: + blank = 1; hsync = 0; vsync = 0; + break; + default: + return -EINVAL; + } + dcfg = readl(par->vid_regs + GX_DCFG); + dcfg &= ~(GX_DCFG_DAC_BL_EN + | GX_DCFG_HSYNC_EN | GX_DCFG_VSYNC_EN); + if (!blank) + dcfg |= GX_DCFG_DAC_BL_EN; + if (hsync) + dcfg |= GX_DCFG_HSYNC_EN; + if (vsync) + dcfg |= GX_DCFG_VSYNC_EN; + writel(dcfg, par->vid_regs + GX_DCFG); + + /* Power on/off flat panel. */ + fp_pm = readl(par->vid_regs + GX_FP_PM); + if (blank_mode == FB_BLANK_POWERDOWN) + fp_pm &= ~GX_FP_PM_P; + else + fp_pm |= GX_FP_PM_P; + writel(fp_pm, par->vid_regs + GX_FP_PM); + + return 0; +} + +struct geode_vid_ops gx_vid_ops = { + .set_dclk = gx_set_dclk_frequency, + .configure_display = gx_configure_display, + .blank_display = gx_blank_display, +}; diff --git a/drivers/video/geode/video_gx.h b/drivers/video/geode/video_gx.h new file mode 100644 index 00000000000..2d9211f3ed8 --- /dev/null +++ b/drivers/video/geode/video_gx.h @@ -0,0 +1,47 @@ +/* + * Geode GX video device + * + * Copyright (C) 2006 Arcom Control Systems Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __VIDEO_GX_H__ +#define __VIDEO_GX_H__ + +extern struct geode_vid_ops gx_vid_ops; + +/* Geode GX video processor registers */ + +#define GX_DCFG 0x0008 +# define GX_DCFG_CRT_EN 0x00000001 +# define GX_DCFG_HSYNC_EN 0x00000002 +# define GX_DCFG_VSYNC_EN 0x00000004 +# define GX_DCFG_DAC_BL_EN 0x00000008 +# define GX_DCFG_CRT_HSYNC_POL 0x00000100 +# define GX_DCFG_CRT_VSYNC_POL 0x00000200 +# define GX_DCFG_CRT_SYNC_SKW_MASK 0x0001C000 +# define GX_DCFG_CRT_SYNC_SKW_DFLT 0x00010000 +# define GX_DCFG_VG_CK 0x00100000 +# define GX_DCFG_GV_GAM 0x00200000 +# define GX_DCFG_DAC_VREF 0x04000000 + +/* Geode GX flat panel display control registers */ +#define GX_FP_PM 0x410 +# define GX_FP_PM_P 0x01000000 + +/* Geode GX clock control MSRs */ + +#define MSR_GLCP_SYS_RSTPLL 0x4c000014 +# define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 (0x0000000000000002ull) +# define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 (0x0000000000000004ull) +# define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 (0x0000000000000008ull) + +#define MSR_GLCP_DOTPLL 0x4c000015 +# define MSR_GLCP_DOTPLL_DOTRESET (0x0000000000000001ull) +# define MSR_GLCP_DOTPLL_BYPASS (0x0000000000008000ull) +# define MSR_GLCP_DOTPLL_LOCK (0x0000000002000000ull) + +#endif /* !__VIDEO_GX_H__ */ diff --git a/drivers/video/i810/i810-i2c.c b/drivers/video/i810/i810-i2c.c index e3c8b5f1ca7..3fe3ae1aff1 100644 --- a/drivers/video/i810/i810-i2c.c +++ b/drivers/video/i810/i810-i2c.c @@ -210,8 +210,7 @@ int i810_probe_i2c_connector(struct fb_info *info, u8 **out_edid, int conn) } } - if (out_edid) - *out_edid = edid; + *out_edid = edid; return (edid) ? 0 : 1; } diff --git a/drivers/video/imsttfb.c b/drivers/video/imsttfb.c index 7db42542eb1..f73c642b50c 100644 --- a/drivers/video/imsttfb.c +++ b/drivers/video/imsttfb.c @@ -440,9 +440,9 @@ getclkMHz(struct imstt_par *par) static void setclkMHz(struct imstt_par *par, __u32 MHz) { - __u32 clk_m, clk_n, clk_p, x, stage, spilled; + __u32 clk_m, clk_n, x, stage, spilled; - clk_m = clk_n = clk_p = 0; + clk_m = clk_n = 0; stage = spilled = 0; for (;;) { switch (stage) { @@ -453,7 +453,7 @@ setclkMHz(struct imstt_par *par, __u32 MHz) clk_n++; break; } - x = 20 * (clk_m + 1) / ((clk_n + 1) * (clk_p ? 2 * clk_p : 1)); + x = 20 * (clk_m + 1) / (clk_n + 1); if (x == MHz) break; if (x > MHz) { @@ -466,7 +466,7 @@ setclkMHz(struct imstt_par *par, __u32 MHz) par->init.pclk_m = clk_m; par->init.pclk_n = clk_n; - par->init.pclk_p = clk_p; + par->init.pclk_p = 0; } static struct imstt_regvals * @@ -1372,18 +1372,24 @@ init_imstt(struct fb_info *info) write_reg_le32(par->dc_regs, STGCTL, tmp & ~0x1); write_reg_le32(par->dc_regs, SSR, 0); - /* set default values for DAC registers */ + /* set default values for DAC registers */ if (par->ramdac == IBM) { - par->cmap_regs[PPMASK] = 0xff; eieio(); - par->cmap_regs[PIDXHI] = 0; eieio(); - for (i = 0; i < sizeof(ibm_initregs) / sizeof(*ibm_initregs); i++) { - par->cmap_regs[PIDXLO] = ibm_initregs[i].addr; eieio(); - par->cmap_regs[PIDXDATA] = ibm_initregs[i].value; eieio(); + par->cmap_regs[PPMASK] = 0xff; + eieio(); + par->cmap_regs[PIDXHI] = 0; + eieio(); + for (i = 0; i < ARRAY_SIZE(ibm_initregs); i++) { + par->cmap_regs[PIDXLO] = ibm_initregs[i].addr; + eieio(); + par->cmap_regs[PIDXDATA] = ibm_initregs[i].value; + eieio(); } } else { - for (i = 0; i < sizeof(tvp_initregs) / sizeof(*tvp_initregs); i++) { - par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr; eieio(); - par->cmap_regs[TVPIDATA] = tvp_initregs[i].value; eieio(); + for (i = 0; i < ARRAY_SIZE(tvp_initregs); i++) { + par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr; + eieio(); + par->cmap_regs[TVPIDATA] = tvp_initregs[i].value; + eieio(); } } diff --git a/drivers/video/macmodes.c b/drivers/video/macmodes.c index 2fc71081f7e..c0385c6f7db 100644 --- a/drivers/video/macmodes.c +++ b/drivers/video/macmodes.c @@ -380,7 +380,7 @@ int __init mac_find_mode(struct fb_var_screeninfo *var, struct fb_info *info, if (mode_option && !strncmp(mode_option, "mac", 3)) { mode_option += 3; db = mac_modedb; - dbsize = sizeof(mac_modedb)/sizeof(*mac_modedb); + dbsize = ARRAY_SIZE(mac_modedb); } return fb_find_mode(var, info, mode_option, db, dbsize, &mac_modedb[DEFAULT_MODEDB_INDEX], default_bpp); diff --git a/drivers/video/matrox/matroxfb_g450.c b/drivers/video/matrox/matroxfb_g450.c index c122d8743dd..4d610b405d4 100644 --- a/drivers/video/matrox/matroxfb_g450.c +++ b/drivers/video/matrox/matroxfb_g450.c @@ -59,7 +59,7 @@ static const struct mctl g450_controls[] = }, offsetof(struct matrox_fb_info, altout.tvo_params.testout) }, }; -#define G450CTRLS (sizeof(g450_controls)/sizeof(g450_controls[0])) +#define G450CTRLS ARRAY_SIZE(g450_controls) /* Return: positive number: id found -EINVAL: id not found, return failure diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c index 6019710dc29..5d29a26b8cd 100644 --- a/drivers/video/matrox/matroxfb_maven.c +++ b/drivers/video/matrox/matroxfb_maven.c @@ -89,12 +89,12 @@ static const struct mctl maven_controls[] = }, offsetof(struct matrox_fb_info, altout.tvo_params.hue) }, { { V4L2_CID_GAMMA, V4L2_CTRL_TYPE_INTEGER, "gamma", - 0, sizeof(maven_gamma)/sizeof(maven_gamma[0])-1, 1, 3, + 0, ARRAY_SIZE(maven_gamma) - 1, 1, 3, 0, }, offsetof(struct matrox_fb_info, altout.tvo_params.gamma) }, { { MATROXFB_CID_TESTOUT, V4L2_CTRL_TYPE_BOOLEAN, "test output", - 0, 1, 1, 0, + 0, 1, 1, 0, 0, }, offsetof(struct matrox_fb_info, altout.tvo_params.testout) }, { { MATROXFB_CID_DEFLICKER, V4L2_CTRL_TYPE_INTEGER, @@ -105,7 +105,7 @@ static const struct mctl maven_controls[] = }; -#define MAVCTRLS (sizeof(maven_controls)/sizeof(maven_controls[0])) +#define MAVCTRLS ARRAY_SIZE(maven_controls) /* Return: positive number: id found -EINVAL: id not found, return failure @@ -129,7 +129,7 @@ static int get_ctrl_id(__u32 v4l2_id) { struct maven_data { struct matrox_fb_info* primary_head; - struct i2c_client* client; + struct i2c_client client; int version; }; @@ -970,7 +970,7 @@ static inline int maven_compute_timming(struct maven_data* md, static int maven_program_timming(struct maven_data* md, const struct mavenregs* m) { - struct i2c_client* c = md->client; + struct i2c_client* c = &md->client; if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) { LR(0x80); @@ -1007,7 +1007,7 @@ static int maven_program_timming(struct maven_data* md, } static inline int maven_resync(struct maven_data* md) { - struct i2c_client* c = md->client; + struct i2c_client* c = &md->client; maven_set_reg(c, 0x95, 0x20); /* start whole thing */ return 0; } @@ -1065,48 +1065,48 @@ static int maven_set_control (struct maven_data* md, maven_compute_bwlevel(md, &blacklevel, &whitelevel); blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8); whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8); - maven_set_reg_pair(md->client, 0x0e, blacklevel); - maven_set_reg_pair(md->client, 0x1e, whitelevel); + maven_set_reg_pair(&md->client, 0x0e, blacklevel); + maven_set_reg_pair(&md->client, 0x1e, whitelevel); } break; case V4L2_CID_SATURATION: { - maven_set_reg(md->client, 0x20, p->value); - maven_set_reg(md->client, 0x22, p->value); + maven_set_reg(&md->client, 0x20, p->value); + maven_set_reg(&md->client, 0x22, p->value); } break; case V4L2_CID_HUE: { - maven_set_reg(md->client, 0x25, p->value); + maven_set_reg(&md->client, 0x25, p->value); } break; case V4L2_CID_GAMMA: { const struct maven_gamma* g; g = maven_compute_gamma(md); - maven_set_reg(md->client, 0x83, g->reg83); - maven_set_reg(md->client, 0x84, g->reg84); - maven_set_reg(md->client, 0x85, g->reg85); - maven_set_reg(md->client, 0x86, g->reg86); - maven_set_reg(md->client, 0x87, g->reg87); - maven_set_reg(md->client, 0x88, g->reg88); - maven_set_reg(md->client, 0x89, g->reg89); - maven_set_reg(md->client, 0x8a, g->reg8a); - maven_set_reg(md->client, 0x8b, g->reg8b); + maven_set_reg(&md->client, 0x83, g->reg83); + maven_set_reg(&md->client, 0x84, g->reg84); + maven_set_reg(&md->client, 0x85, g->reg85); + maven_set_reg(&md->client, 0x86, g->reg86); + maven_set_reg(&md->client, 0x87, g->reg87); + maven_set_reg(&md->client, 0x88, g->reg88); + maven_set_reg(&md->client, 0x89, g->reg89); + maven_set_reg(&md->client, 0x8a, g->reg8a); + maven_set_reg(&md->client, 0x8b, g->reg8b); } break; case MATROXFB_CID_TESTOUT: { unsigned char val - = maven_get_reg (md->client,0x8d); + = maven_get_reg(&md->client,0x8d); if (p->value) val |= 0x10; else val &= ~0x10; - maven_set_reg (md->client, 0x8d, val); + maven_set_reg(&md->client, 0x8d, val); } break; case MATROXFB_CID_DEFLICKER: { - maven_set_reg(md->client, 0x93, maven_compute_deflicker(md)); + maven_set_reg(&md->client, 0x93, maven_compute_deflicker(md)); } break; } @@ -1185,7 +1185,6 @@ static int maven_init_client(struct i2c_client* clnt) { MINFO_FROM(container_of(clnt->adapter, struct i2c_bit_adapter, adapter)->minfo); md->primary_head = MINFO; - md->client = clnt; down_write(&ACCESS_FBINFO(altout.lock)); ACCESS_FBINFO(outputs[1]).output = &maven_altout; ACCESS_FBINFO(outputs[1]).src = ACCESS_FBINFO(outputs[1]).default_src; @@ -1243,19 +1242,17 @@ static int maven_detect_client(struct i2c_adapter* adapter, int address, int kin I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_PROTOCOL_MANGLING)) goto ERROR0; - if (!(new_client = (struct i2c_client*)kmalloc(sizeof(*new_client) + sizeof(*data), - GFP_KERNEL))) { + if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } - memset(new_client, 0, sizeof(*new_client) + sizeof(*data)); - data = (struct maven_data*)(new_client + 1); + new_client = &data->client; i2c_set_clientdata(new_client, data); new_client->addr = address; new_client->adapter = adapter; new_client->driver = &maven_driver; new_client->flags = 0; - strcpy(new_client->name, "maven client"); + strlcpy(new_client->name, "maven", I2C_NAME_SIZE); if ((err = i2c_attach_client(new_client))) goto ERROR3; err = maven_init_client(new_client); @@ -1279,12 +1276,10 @@ static int maven_attach_adapter(struct i2c_adapter* adapter) { static int maven_detach_client(struct i2c_client* client) { int err; - if ((err = i2c_detach_client(client))) { - printk(KERN_ERR "maven: Cannot deregister client\n"); + if ((err = i2c_detach_client(client))) return err; - } maven_shutdown_client(client); - kfree(client); + kfree(i2c_get_clientdata(client)); return 0; } @@ -1297,20 +1292,13 @@ static struct i2c_driver maven_driver={ .detach_client = maven_detach_client, }; -/* ************************** */ - -static int matroxfb_maven_init(void) { - int err; - - err = i2c_add_driver(&maven_driver); - if (err) { - printk(KERN_ERR "maven: Maven driver failed to register (%d).\n", err); - return err; - } - return 0; +static int __init matroxfb_maven_init(void) +{ + return i2c_add_driver(&maven_driver); } -static void matroxfb_maven_exit(void) { +static void __exit matroxfb_maven_exit(void) +{ i2c_del_driver(&maven_driver); } diff --git a/drivers/video/modedb.c b/drivers/video/modedb.c index 1da2f84bdc2..26a1c618a20 100644 --- a/drivers/video/modedb.c +++ b/drivers/video/modedb.c @@ -183,6 +183,10 @@ static const struct fb_videomode modedb[] = { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED }, { + /* 1680x1050 @ 60 Hz, 65.191 kHz hsync */ + NULL, 60, 1680, 1050, 6848, 280, 104, 30, 3, 176, 6, + FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED + }, { /* 1600x1200 @ 85 Hz, 105.77 kHz hsync */ NULL, 85, 1600, 1200, 4545, 272, 16, 37, 4, 192, 3, FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED @@ -496,7 +500,7 @@ int fb_find_mode(struct fb_var_screeninfo *var, /* Set up defaults */ if (!db) { db = modedb; - dbsize = sizeof(modedb)/sizeof(*modedb); + dbsize = ARRAY_SIZE(modedb); } if (!default_mode) default_mode = &modedb[DEFAULT_MODEDB_INDEX]; diff --git a/drivers/video/neofb.c b/drivers/video/neofb.c index b961d5601bd..24b12f71d5a 100644 --- a/drivers/video/neofb.c +++ b/drivers/video/neofb.c @@ -165,20 +165,20 @@ static int neoFindMode(int xres, int yres, int depth) switch (depth) { case 8: - size = sizeof(bios8) / sizeof(biosMode); + size = ARRAY_SIZE(bios8); mode = bios8; break; case 16: - size = sizeof(bios16) / sizeof(biosMode); + size = ARRAY_SIZE(bios16); mode = bios16; break; case 24: - size = sizeof(bios24) / sizeof(biosMode); + size = ARRAY_SIZE(bios24); mode = bios24; break; #ifdef NO_32BIT_SUPPORT_YET case 32: - size = sizeof(bios32) / sizeof(biosMode); + size = ARRAY_SIZE(bios32); mode = bios32; break; #endif diff --git a/drivers/video/nvidia/nv_accel.c b/drivers/video/nvidia/nv_accel.c index f377a29ec97..4aefb8f4163 100644 --- a/drivers/video/nvidia/nv_accel.c +++ b/drivers/video/nvidia/nv_accel.c @@ -300,6 +300,9 @@ int nvidiafb_sync(struct fb_info *info) { struct nvidia_par *par = info->par; + if (info->state != FBINFO_STATE_RUNNING) + return 0; + if (!par->lockup) NVFlush(par); @@ -313,6 +316,9 @@ void nvidiafb_copyarea(struct fb_info *info, const struct fb_copyarea *region) { struct nvidia_par *par = info->par; + if (info->state != FBINFO_STATE_RUNNING) + return; + if (par->lockup) return cfb_copyarea(info, region); @@ -329,6 +335,9 @@ void nvidiafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) struct nvidia_par *par = info->par; u32 color; + if (info->state != FBINFO_STATE_RUNNING) + return; + if (par->lockup) return cfb_fillrect(info, rect); @@ -412,6 +421,9 @@ void nvidiafb_imageblit(struct fb_info *info, const struct fb_image *image) { struct nvidia_par *par = info->par; + if (info->state != FBINFO_STATE_RUNNING) + return; + if (image->depth == 1 && !par->lockup) nvidiafb_mono_color_expand(info, image); else diff --git a/drivers/video/nvidia/nv_i2c.c b/drivers/video/nvidia/nv_i2c.c index bd9eca05e14..1edb1c432b7 100644 --- a/drivers/video/nvidia/nv_i2c.c +++ b/drivers/video/nvidia/nv_i2c.c @@ -218,8 +218,7 @@ int nvidia_probe_i2c_connector(struct fb_info *info, int conn, u8 **out_edid) } } - if (out_edid) - *out_edid = edid; + *out_edid = edid; return (edid) ? 0 : 1; } diff --git a/drivers/video/nvidia/nv_type.h b/drivers/video/nvidia/nv_type.h index e4a5b1da71c..acdc2669340 100644 --- a/drivers/video/nvidia/nv_type.h +++ b/drivers/video/nvidia/nv_type.h @@ -129,6 +129,7 @@ struct nvidia_par { int fpHeight; int PanelTweak; int paneltweak; + int pm_state; u32 crtcSync_read; u32 fpSyncs; u32 dmaPut; diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c index a7c4e5e8ead..6d3e4890cb4 100644 --- a/drivers/video/nvidia/nvidia.c +++ b/drivers/video/nvidia/nvidia.c @@ -21,6 +21,7 @@ #include <linux/fb.h> #include <linux/init.h> #include <linux/pci.h> +#include <linux/console.h> #ifdef CONFIG_MTRR #include <asm/mtrr.h> #endif @@ -296,6 +297,8 @@ static struct pci_device_id nvidiafb_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {PCI_VENDOR_ID_NVIDIA, PCIE_DEVICE_ID_NVIDIA_GEFORCE_6800_GT, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + {PCI_VENDOR_ID_NVIDIA, PCIE_DEVICE_ID_NVIDIA_QUADRO_NVS280, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {PCI_VENDOR_ID_NVIDIA, 0x0252, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {PCI_VENDOR_ID_NVIDIA, 0x0313, @@ -615,6 +618,30 @@ static int nvidia_panel_tweak(struct nvidia_par *par, return tweak; } +static void nvidia_vga_protect(struct nvidia_par *par, int on) +{ + unsigned char tmp; + + if (on) { + /* + * Turn off screen and disable sequencer. + */ + tmp = NVReadSeq(par, 0x01); + + NVWriteSeq(par, 0x00, 0x01); /* Synchronous Reset */ + NVWriteSeq(par, 0x01, tmp | 0x20); /* disable the display */ + } else { + /* + * Reenable sequencer, then turn on screen. + */ + + tmp = NVReadSeq(par, 0x01); + + NVWriteSeq(par, 0x01, tmp & ~0x20); /* reenable display */ + NVWriteSeq(par, 0x00, 0x03); /* End Reset */ + } +} + static void nvidia_save_vga(struct nvidia_par *par, struct _riva_hw_state *state) { @@ -643,9 +670,9 @@ static void nvidia_save_vga(struct nvidia_par *par, #undef DUMP_REG -static void nvidia_write_regs(struct nvidia_par *par) +static void nvidia_write_regs(struct nvidia_par *par, + struct _riva_hw_state *state) { - struct _riva_hw_state *state = &par->ModeReg; int i; NVTRACE_ENTER(); @@ -694,32 +721,6 @@ static void nvidia_write_regs(struct nvidia_par *par) NVTRACE_LEAVE(); } -static void nvidia_vga_protect(struct nvidia_par *par, int on) -{ - unsigned char tmp; - - if (on) { - /* - * Turn off screen and disable sequencer. - */ - tmp = NVReadSeq(par, 0x01); - - NVWriteSeq(par, 0x00, 0x01); /* Synchronous Reset */ - NVWriteSeq(par, 0x01, tmp | 0x20); /* disable the display */ - } else { - /* - * Reenable sequencer, then turn on screen. - */ - - tmp = NVReadSeq(par, 0x01); - - NVWriteSeq(par, 0x01, tmp & ~0x20); /* reenable display */ - NVWriteSeq(par, 0x00, 0x03); /* End Reset */ - } -} - - - static int nvidia_calc_regs(struct fb_info *info) { struct nvidia_par *par = info->par; @@ -1068,7 +1069,8 @@ static int nvidiafb_set_par(struct fb_info *info) nvidia_vga_protect(par, 1); - nvidia_write_regs(par); + nvidia_write_regs(par, &par->ModeReg); + NVSetStartAddress(par, 0); #if defined (__BIG_ENDIAN) /* turn on LFB swapping */ @@ -1377,6 +1379,57 @@ static struct fb_ops nvidia_fb_ops = { .fb_sync = nvidiafb_sync, }; +#ifdef CONFIG_PM +static int nvidiafb_suspend(struct pci_dev *dev, pm_message_t state) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct nvidia_par *par = info->par; + + acquire_console_sem(); + par->pm_state = state.event; + + if (state.event == PM_EVENT_FREEZE) { + dev->dev.power.power_state = state; + } else { + fb_set_suspend(info, 1); + nvidiafb_blank(FB_BLANK_POWERDOWN, info); + nvidia_write_regs(par, &par->SavedReg); + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + } + + release_console_sem(); + return 0; +} + +static int nvidiafb_resume(struct pci_dev *dev) +{ + struct fb_info *info = pci_get_drvdata(dev); + struct nvidia_par *par = info->par; + + acquire_console_sem(); + pci_set_power_state(dev, PCI_D0); + + if (par->pm_state != PM_EVENT_FREEZE) { + pci_restore_state(dev); + pci_enable_device(dev); + pci_set_master(dev); + } + + par->pm_state = PM_EVENT_ON; + nvidiafb_set_par(info); + fb_set_suspend (info, 0); + nvidiafb_blank(FB_BLANK_UNBLANK, info); + + release_console_sem(); + return 0; +} +#else +#define nvidiafb_suspend NULL +#define nvidiafb_resume NULL +#endif + static int __devinit nvidia_set_fbinfo(struct fb_info *info) { struct fb_monspecs *specs = &info->monspecs; @@ -1720,8 +1773,6 @@ static void __exit nvidiafb_remove(struct pci_dev *pd) struct nvidia_par *par = info->par; NVTRACE_ENTER(); - if (!info) - return; unregister_framebuffer(info); #ifdef CONFIG_MTRR @@ -1798,8 +1849,10 @@ static int __devinit nvidiafb_setup(char *options) static struct pci_driver nvidiafb_driver = { .name = "nvidiafb", .id_table = nvidiafb_pci_tbl, - .probe = nvidiafb_probe, - .remove = __exit_p(nvidiafb_remove), + .probe = nvidiafb_probe, + .suspend = nvidiafb_suspend, + .resume = nvidiafb_resume, + .remove = __exit_p(nvidiafb_remove), }; /* ------------------------------------------------------------------------- * diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c index eeeac924b50..73e2d7d1660 100644 --- a/drivers/video/pmagb-b-fb.c +++ b/drivers/video/pmagb-b-fb.c @@ -228,7 +228,7 @@ static void __init pmagbbfb_osc_setup(struct fb_info *info) freq1 = (par->osc0 * count1 + count0 / 2) / count0; par->osc1 = freq1; - for (i = 0; i < sizeof(pmagbbfb_freqs) / sizeof(*pmagbbfb_freqs); i++) + for (i = 0; i < ARRAY_SIZE(pmagbbfb_freqs); i++) if (freq1 >= pmagbbfb_freqs[i] - (pmagbbfb_freqs[i] + 128) / 256 && freq1 <= pmagbbfb_freqs[i] + diff --git a/drivers/video/radeonfb.c b/drivers/video/radeonfb.c index db9fb9074db..24982adb3aa 100644 --- a/drivers/video/radeonfb.c +++ b/drivers/video/radeonfb.c @@ -759,7 +759,7 @@ static void __iomem *radeon_find_rom(struct radeonfb_info *rinfo) rom = rom_base; for (i = 0; (i < 512) && (stage != 4); i++) { - for(j = 0;j < sizeof(radeon_sig)/sizeof(char *);j++) { + for (j = 0; j < ARRAY_SIZE(radeon_sig); j++) { if (radeon_sig[j][0] == *rom) if (strncmp(radeon_sig[j], rom, strlen(radeon_sig[j])) == 0) { diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c index 6c19ab6afb0..f841f013b96 100644 --- a/drivers/video/riva/fbdev.c +++ b/drivers/video/riva/fbdev.c @@ -2072,8 +2072,6 @@ static void __exit rivafb_remove(struct pci_dev *pd) struct riva_par *par = info->par; NVTRACE_ENTER(); - if (!info) - return; #ifdef CONFIG_FB_RIVA_I2C riva_delete_i2c_busses(par); diff --git a/drivers/video/savage/savagefb-i2c.c b/drivers/video/savage/savagefb-i2c.c index 00719a91479..21debed863a 100644 --- a/drivers/video/savage/savagefb-i2c.c +++ b/drivers/video/savage/savagefb-i2c.c @@ -273,8 +273,7 @@ int savagefb_probe_i2c_connector(struct fb_info *info, u8 **out_edid) } } - if (out_edid) - *out_edid = edid; + *out_edid = edid; return (edid) ? 0 : 1; } diff --git a/drivers/video/sis/init301.c b/drivers/video/sis/init301.c index 2d88f908170..c3e070a6eff 100644 --- a/drivers/video/sis/init301.c +++ b/drivers/video/sis/init301.c @@ -8564,11 +8564,9 @@ SiS_ChrontelDoSomething3(struct SiS_Private *SiS_Pr, unsigned short ModeNo) static void SiS_ChrontelDoSomething2(struct SiS_Private *SiS_Pr) { - unsigned short temp,tempcl,tempch; + unsigned short temp; SiS_LongDelay(SiS_Pr, 1); - tempcl = 3; - tempch = 0; do { temp = SiS_GetCH701x(SiS_Pr,0x66); @@ -8582,13 +8580,6 @@ SiS_ChrontelDoSomething2(struct SiS_Private *SiS_Pr) SiS_SetCH701xForLCD(SiS_Pr); - if(tempcl == 0) { - if(tempch == 3) break; - SiS_ChrontelResetDB(SiS_Pr); - tempcl = 3; - tempch++; - } - tempcl--; temp = SiS_GetCH701x(SiS_Pr,0x76); temp &= 0xfb; /* Reset PLL */ SiS_SetCH701x(SiS_Pr,0x76,temp); diff --git a/drivers/video/sstfb.c b/drivers/video/sstfb.c index 8c1a8b5135c..c44de90ca12 100644 --- a/drivers/video/sstfb.c +++ b/drivers/video/sstfb.c @@ -1194,10 +1194,11 @@ static struct dac_switch dacs[] __devinitdata = { static int __devinit sst_detect_dactype(struct fb_info *info, struct sstfb_par *par) { int i, ret = 0; - - for (i=0; i<sizeof(dacs)/sizeof(dacs[0]); i++) { + + for (i = 0; i < ARRAY_SIZE(dacs); i++) { ret = dacs[i].detect(info); - if (ret) break; + if (ret) + break; } if (!ret) return 0; @@ -1604,8 +1605,8 @@ static int sstfb_dump_regs(struct fb_info *info) {FBZMODE,"fbzmode"}, }; - const int pci_s = sizeof(pci_regs)/sizeof(pci_regs[0]); - const int sst_s = sizeof(sst_regs)/sizeof(sst_regs[0]); + const int pci_s = ARRAY_SIZE(pci_regs); + const int sst_s = ARRAY_SIZE(sst_regs); struct sstfb_par *par = info->par; struct pci_dev *dev = par->dev; u32 pci_res[pci_s]; diff --git a/drivers/video/virgefb.c b/drivers/video/virgefb.c index ed78747487e..5ea2345dab9 100644 --- a/drivers/video/virgefb.c +++ b/drivers/video/virgefb.c @@ -616,8 +616,7 @@ static struct { #endif }; -#define arraysize(x) (sizeof(x)/sizeof(*(x))) -#define NUM_TOTAL_MODES arraysize(virgefb_predefined) +#define NUM_TOTAL_MODES ARRAY_SIZE(virgefb_predefined) /* * Default to 800x600 for video=virge8:, virge16: or virge32: |