diff options
Diffstat (limited to 'drivers/char')
54 files changed, 2302 insertions, 965 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 5980f3e886f..889cad07774 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 @@ -560,14 +561,31 @@ config TIPAR If unsure, say N. +config HVC_DRIVER + bool + help + Users of pSeries machines that want to utilize the hvc console front-end + module for their backend console driver should select this option. + It will automatically be selected if one of the back-end console drivers + is selected. + + config HVC_CONSOLE bool "pSeries Hypervisor Virtual Console support" depends on PPC_PSERIES + select HVC_DRIVER help pSeries machines when partitioned support a hypervisor virtual console. This driver allows each pSeries partition to have a console which is accessed via the HMC. +config HVC_RTAS + bool "IBM RTAS Console support" + depends on PPC_RTAS + select HVC_DRIVER + help + IBM Console device driver which makes use of RTAS + config HVCS tristate "IBM Hypervisor Virtual Console Server support" depends on PPC_PSERIES @@ -695,7 +713,7 @@ 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/Makefile b/drivers/char/Makefile index 090d154098b..a73cb495692 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -41,60 +41,63 @@ obj-$(CONFIG_N_HDLC) += n_hdlc.o obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o obj-$(CONFIG_SX) += sx.o generic_serial.o obj-$(CONFIG_RIO) += rio/ generic_serial.o -obj-$(CONFIG_HVC_CONSOLE) += hvc_console.o hvc_vio.o hvsi.o +obj-$(CONFIG_HVC_DRIVER) += hvc_console.o +obj-$(CONFIG_HVC_CONSOLE) += hvc_vio.o hvsi.o +obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o obj-$(CONFIG_RAW_DRIVER) += raw.o obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o obj-$(CONFIG_MMTIMER) += mmtimer.o -obj-$(CONFIG_VIOCONS) += viocons.o +obj-$(CONFIG_VIOCONS) += viocons.o obj-$(CONFIG_VIOTAPE) += viotape.o obj-$(CONFIG_HVCS) += hvcs.o obj-$(CONFIG_SGI_MBCS) += mbcs.o -obj-$(CONFIG_PRINTER) += lp.o -obj-$(CONFIG_TIPAR) += tipar.o - -obj-$(CONFIG_DTLK) += dtlk.o -obj-$(CONFIG_R3964) += n_r3964.o -obj-$(CONFIG_APPLICOM) += applicom.o -obj-$(CONFIG_SONYPI) += sonypi.o -obj-$(CONFIG_RTC) += rtc.o -obj-$(CONFIG_HPET) += hpet.o -obj-$(CONFIG_GEN_RTC) += genrtc.o -obj-$(CONFIG_EFI_RTC) += efirtc.o -obj-$(CONFIG_SGI_DS1286) += ds1286.o -obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o -obj-$(CONFIG_DS1302) += ds1302.o -obj-$(CONFIG_S3C2410_RTC) += s3c2410-rtc.o -obj-$(CONFIG_RTC_VR41XX) += vr41xx_rtc.o +obj-$(CONFIG_PRINTER) += lp.o +obj-$(CONFIG_TIPAR) += tipar.o + +obj-$(CONFIG_DTLK) += dtlk.o +obj-$(CONFIG_R3964) += n_r3964.o +obj-$(CONFIG_APPLICOM) += applicom.o +obj-$(CONFIG_SONYPI) += sonypi.o +obj-$(CONFIG_RTC) += rtc.o +obj-$(CONFIG_HPET) += hpet.o +obj-$(CONFIG_GEN_RTC) += genrtc.o +obj-$(CONFIG_EFI_RTC) += efirtc.o +obj-$(CONFIG_SGI_DS1286) += ds1286.o +obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o +obj-$(CONFIG_DS1302) += ds1302.o +obj-$(CONFIG_S3C2410_RTC) += s3c2410-rtc.o +obj-$(CONFIG_RTC_VR41XX) += vr41xx_rtc.o ifeq ($(CONFIG_GENERIC_NVRAM),y) - obj-$(CONFIG_NVRAM) += generic_nvram.o + obj-$(CONFIG_NVRAM) += generic_nvram.o else - obj-$(CONFIG_NVRAM) += nvram.o + obj-$(CONFIG_NVRAM) += nvram.o endif -obj-$(CONFIG_TOSHIBA) += toshiba.o -obj-$(CONFIG_I8K) += i8k.o -obj-$(CONFIG_DS1620) += ds1620.o -obj-$(CONFIG_HW_RANDOM) += hw_random.o -obj-$(CONFIG_FTAPE) += ftape/ -obj-$(CONFIG_COBALT_LCD) += lcd.o -obj-$(CONFIG_PPDEV) += ppdev.o -obj-$(CONFIG_NWBUTTON) += nwbutton.o -obj-$(CONFIG_NWFLASH) += nwflash.o -obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o -obj-$(CONFIG_CS5535_GPIO) += cs5535_gpio.o -obj-$(CONFIG_GPIO_VR41XX) += vr41xx_giu.o -obj-$(CONFIG_TANBAC_TB0219) += tb0219.o -obj-$(CONFIG_TELCLOCK) += tlclk.o - -obj-$(CONFIG_WATCHDOG) += watchdog/ -obj-$(CONFIG_MWAVE) += mwave/ -obj-$(CONFIG_AGP) += agp/ -obj-$(CONFIG_DRM) += drm/ -obj-$(CONFIG_PCMCIA) += pcmcia/ -obj-$(CONFIG_IPMI_HANDLER) += ipmi/ - -obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o -obj-$(CONFIG_TCG_TPM) += tpm/ +obj-$(CONFIG_TOSHIBA) += toshiba.o +obj-$(CONFIG_I8K) += i8k.o +obj-$(CONFIG_DS1620) += ds1620.o +obj-$(CONFIG_HW_RANDOM) += hw_random.o +obj-$(CONFIG_FTAPE) += ftape/ +obj-$(CONFIG_COBALT_LCD) += lcd.o +obj-$(CONFIG_PPDEV) += ppdev.o +obj-$(CONFIG_NWBUTTON) += nwbutton.o +obj-$(CONFIG_NWFLASH) += nwflash.o +obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o +obj-$(CONFIG_CS5535_GPIO) += cs5535_gpio.o +obj-$(CONFIG_GPIO_VR41XX) += vr41xx_giu.o +obj-$(CONFIG_TANBAC_TB0219) += tb0219.o +obj-$(CONFIG_TELCLOCK) += tlclk.o + +obj-$(CONFIG_WATCHDOG) += watchdog/ +obj-$(CONFIG_MWAVE) += mwave/ +obj-$(CONFIG_AGP) += agp/ +obj-$(CONFIG_DRM) += drm/ +obj-$(CONFIG_PCMCIA) += pcmcia/ +obj-$(CONFIG_IPMI_HANDLER) += ipmi/ + +obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o +obj-$(CONFIG_TCG_TPM) += tpm/ + # Files generated that shall be removed upon make clean clean-files := consolemap_deftbl.c defkeymap.c qtronixmap.c diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig index a4d425d2dce..0b9cf9c59a2 100644 --- a/drivers/char/agp/Kconfig +++ b/drivers/char/agp/Kconfig @@ -98,12 +98,12 @@ config AGP_SWORKS tristate "Serverworks LE/HE chipset support" depends on AGP && X86_32 help - Say Y here to support the Serverworks AGP card. See + Say Y here to support the Serverworks AGP card. See <http://www.serverworks.com/> for product descriptions and images. config AGP_VIA tristate "VIA chipset support" - depends on AGP && X86_32 + depends on AGP help This option gives you AGP support for the GLX component of X on VIA MVP3/Apollo Pro chipsets. diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h index b4af87c6f9c..3c623b67ea1 100644 --- a/drivers/char/agp/agp.h +++ b/drivers/char/agp/agp.h @@ -19,9 +19,9 @@ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE + * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ @@ -53,7 +53,7 @@ enum aper_size_type { struct gatt_mask { unsigned long mask; u32 type; - /* totally device specific, for integrated chipsets that + /* totally device specific, for integrated chipsets that * might have different types of memory masks. For other * devices this will probably be ignored */ }; @@ -104,8 +104,7 @@ struct agp_bridge_driver { void (*agp_enable)(struct agp_bridge_data *, u32); void (*cleanup)(void); void (*tlb_flush)(struct agp_memory *); - unsigned long (*mask_memory)(struct agp_bridge_data *, - unsigned long, int); + unsigned long (*mask_memory)(struct agp_bridge_data *, unsigned long, int); void (*cache_flush)(void); int (*create_gatt_table)(struct agp_bridge_data *); int (*free_gatt_table)(struct agp_bridge_data *); diff --git a/drivers/char/agp/ali-agp.c b/drivers/char/agp/ali-agp.c index b02fc226715..5a31ec7c62f 100644 --- a/drivers/char/agp/ali-agp.c +++ b/drivers/char/agp/ali-agp.c @@ -147,7 +147,7 @@ static void *m1541_alloc_page(struct agp_bridge_data *bridge) if (!addr) return NULL; - + pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c index a072d32005a..2b5838e6475 100644 --- a/drivers/char/agp/alpha-agp.c +++ b/drivers/char/agp/alpha-agp.c @@ -23,8 +23,9 @@ static struct page *alpha_core_agp_vm_nopage(struct vm_area_struct *vma, dma_addr = address - vma->vm_start + agp->aperture.bus_base; pa = agp->ops->translate(agp, dma_addr); - if (pa == (unsigned long)-EINVAL) return NULL; /* no translation */ - + if (pa == (unsigned long)-EINVAL) + return NULL; /* no translation */ + /* * Get the page, inc the use count, and return it */ @@ -89,7 +90,7 @@ static void alpha_core_agp_enable(struct agp_bridge_data *bridge, u32 mode) agp_device_command(agp->mode.lw, 0); } -static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, +static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, int type) { alpha_agp_info *agp = agp_bridge->dev_private_data; @@ -98,7 +99,8 @@ static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; - if ((pg_start + mem->page_count) > num_entries) return -EINVAL; + if ((pg_start + mem->page_count) > num_entries) + return -EINVAL; status = agp->ops->bind(agp, pg_start, mem); mb(); @@ -107,7 +109,7 @@ static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, return status; } -static int alpha_core_agp_remove_memory(struct agp_memory *mem, off_t pg_start, +static int alpha_core_agp_remove_memory(struct agp_memory *mem, off_t pg_start, int type) { alpha_agp_info *agp = agp_bridge->dev_private_data; @@ -125,7 +127,7 @@ struct agp_bridge_driver alpha_core_agp_driver = { .size_type = FIXED_APER_SIZE, .cant_use_aperture = 1, .masks = NULL, - + .fetch_size = alpha_core_agp_fetch_size, .configure = alpha_core_agp_configure, .agp_enable = alpha_core_agp_enable, diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 1251b2515bb..36517d4d1ad 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -216,7 +216,7 @@ static struct aper_size_info_32 amd_8151_sizes[7] = {256, 65536, 6, 0x00000700 }, /* 1 1 1 0 0 0 */ {128, 32768, 5, 0x00000720 }, /* 1 1 1 1 0 0 */ {64, 16384, 4, 0x00000730 }, /* 1 1 1 1 1 0 */ - {32, 8192, 3, 0x00000738 } /* 1 1 1 1 1 1 */ + {32, 8192, 3, 0x00000738 } /* 1 1 1 1 1 1 */ }; static int amd_8151_configure(void) @@ -725,7 +725,7 @@ static struct pci_device_id agp_amd64_pci_table[] = { .class = (PCI_CLASS_BRIDGE_HOST << 8), .class_mask = ~0, .vendor = PCI_VENDOR_ID_AL, - .device = 0x1689, + .device = 0x1695, .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, }, diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c index 5b74c36c116..06fd10ba0c5 100644 --- a/drivers/char/agp/ati-agp.c +++ b/drivers/char/agp/ati-agp.c @@ -74,7 +74,7 @@ static int ati_create_page_map(ati_page_map *page_map) /*CACHE_FLUSH();*/ global_cache_flush(); - for(i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) { + for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) { writel(agp_bridge->scratch_page, page_map->remapped+i); readl(page_map->remapped+i); /* PCI Posting. */ } @@ -99,7 +99,7 @@ static void ati_free_gatt_pages(void) ati_page_map *entry; tables = ati_generic_private.gatt_pages; - for(i = 0; i < ati_generic_private.num_tables; i++) { + for (i = 0; i < ati_generic_private.num_tables; i++) { entry = tables[i]; if (entry != NULL) { if (entry->real != NULL) @@ -387,7 +387,7 @@ static int ati_create_gatt_table(struct agp_bridge_data *bridge) agp_bridge->gart_bus_addr = addr; /* Calculate the agp offset */ - for(i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) { + for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) { writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) | 1, page_dir.remapped+GET_PAGE_DIR_OFF(addr)); readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI Posting. */ @@ -466,6 +466,10 @@ static struct agp_device_ids ati_agp_device_ids[] __devinitdata = .device_id = PCI_DEVICE_ID_ATI_RS300_200, .chipset_name = "IGP9100/M", }, + { + .device_id = PCI_DEVICE_ID_ATI_RS350_200, + .chipset_name = "IGP9100/M", + }, { }, /* dummy final entry, always present */ }; diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index 80ee17a8fc2..509adc40325 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -228,7 +228,7 @@ static void agp_backend_cleanup(struct agp_bridge_data *bridge) struct agp_bridge_data *agp_alloc_bridge(void) { struct agp_bridge_data *bridge; - + bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); if (!bridge) return NULL; diff --git a/drivers/char/agp/efficeon-agp.c b/drivers/char/agp/efficeon-agp.c index e7aea77a60f..fed0a87448d 100644 --- a/drivers/char/agp/efficeon-agp.c +++ b/drivers/char/agp/efficeon-agp.c @@ -1,6 +1,6 @@ /* * Transmeta's Efficeon AGPGART driver. - * + * * Based upon a diff by Linus around November '02. * * Ported to the 2.6 kernel by Carlos Puchol <cpglinux@puchol.com> @@ -9,7 +9,7 @@ /* * NOTE-cpg-040217: - * + * * - when compiled as a module, after loading the module, * it will refuse to unload, indicating it is in use, * when it is not. @@ -45,7 +45,7 @@ * 8: Present * 7:6: reserved, write as zero * 5:0: GATT directory index: which 1st-level entry - * + * * The Efficeon AGP spec requires pages to be WB-cacheable * but to be explicitly CLFLUSH'd after any changes. */ @@ -125,7 +125,7 @@ static int efficeon_configure(void) struct aper_size_info_lvl2 *current_size; printk(KERN_DEBUG PFX "efficeon_configure()\n"); - + current_size = A_SIZE_LVL2(agp_bridge->current_size); /* aperture size */ @@ -190,7 +190,7 @@ static int efficeon_create_gatt_table(struct agp_bridge_data *bridge) const int present = EFFICEON_PRESENT; const int clflush_chunk = ((cpuid_ebx(1) >> 8) & 0xff) << 3; int num_entries, l1_pages; - + num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries; printk(KERN_DEBUG PFX "efficeon_create_gatt_table(%d)\n", num_entries); @@ -257,12 +257,12 @@ static int efficeon_insert_memory(struct agp_memory * mem, off_t pg_start, int t if (!page) continue; - + page += (index & 0x3ff); *page = insert; /* clflush is slow, so don't clflush until we have to */ - if ( last_page && + if ( last_page && ((unsigned long)page^(unsigned long)last_page) & clflush_mask ) asm volatile("clflush %0" : : "m" (*last_page)); @@ -373,7 +373,7 @@ static int __devinit agp_efficeon_probe(struct pci_dev *pdev, */ r = &pdev->resource[0]; if (!r->start && r->end) { - if(pci_assign_resource(pdev, 0)) { + if (pci_assign_resource(pdev, 0)) { printk(KERN_ERR PFX "could not assign resource 0\n"); return -ENODEV; } diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c index 97eeb2345b1..ffcf15c30e9 100644 --- a/drivers/char/agp/frontend.c +++ b/drivers/char/agp/frontend.c @@ -781,7 +781,7 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv) if (agp_fe.current_controller != NULL) return -EBUSY; - if(!agp_bridge) + if (!agp_bridge) return -ENODEV; if (atomic_read(&agp_bridge->agp_in_use)) diff --git a/drivers/char/agp/generic.c b/drivers/char/agp/generic.c index 5567ce8d72b..4e1891e2c03 100644 --- a/drivers/char/agp/generic.c +++ b/drivers/char/agp/generic.c @@ -299,7 +299,7 @@ EXPORT_SYMBOL_GPL(agp_num_entries); /** * agp_copy_info - copy bridge state information * - * @info: agp_kern_info pointer. The caller should insure that this pointer is valid. + * @info: agp_kern_info pointer. The caller should insure that this pointer is valid. * * This function copies information about the agp bridge device and the state of * the agp backend into an agp_kern_info pointer. diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c index de5d6d21267..8c4c6ef748e 100644 --- a/drivers/char/agp/hp-agp.c +++ b/drivers/char/agp/hp-agp.c @@ -85,8 +85,8 @@ static int __init hp_zx1_ioc_shared(void) /* * IOC already configured by sba_iommu module; just use * its setup. We assume: - * - IOVA space is 1Gb in size - * - first 512Mb is IOMMU, second 512Mb is GART + * - IOVA space is 1Gb in size + * - first 512Mb is IOMMU, second 512Mb is GART */ hp->io_tlb_ps = readq(hp->ioc_regs+HP_ZX1_TCNFG); switch (hp->io_tlb_ps) { @@ -115,7 +115,7 @@ static int __init hp_zx1_ioc_shared(void) if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) { /* Normal case when no AGP device in system */ - hp->gatt = NULL; + hp->gatt = NULL; hp->gatt_entries = 0; printk(KERN_ERR PFX "No reserved IO PDIR entry found; " "GART disabled\n"); diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c index 8ee19a4a6bc..91769443d8f 100644 --- a/drivers/char/agp/i460-agp.c +++ b/drivers/char/agp/i460-agp.c @@ -400,10 +400,10 @@ static int i460_insert_memory_large_io_page (struct agp_memory *mem, num_entries = A_SIZE_8(temp)->num_entries; /* Figure out what pg_start means in terms of our large GART pages */ - start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE]; - end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE]; - start_offset = pg_start % I460_KPAGES_PER_IOPAGE; - end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE; + start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE]; + end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE]; + start_offset = pg_start % I460_KPAGES_PER_IOPAGE; + end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE; if (end > i460.lp_desc + num_entries) { printk(KERN_ERR PFX "Looks like we're out of AGP memory\n"); @@ -458,10 +458,10 @@ static int i460_remove_memory_large_io_page (struct agp_memory *mem, num_entries = A_SIZE_8(temp)->num_entries; /* Figure out what pg_start means in terms of our large GART pages */ - start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE]; - end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE]; - start_offset = pg_start % I460_KPAGES_PER_IOPAGE; - end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE; + start = &i460.lp_desc[pg_start / I460_KPAGES_PER_IOPAGE]; + end = &i460.lp_desc[(pg_start + mem->page_count - 1) / I460_KPAGES_PER_IOPAGE]; + start_offset = pg_start % I460_KPAGES_PER_IOPAGE; + end_offset = (pg_start + mem->page_count - 1) % I460_KPAGES_PER_IOPAGE; for (i = 0, lp = start; lp <= end; ++lp) { for (idx = ((lp == start) ? start_offset : 0); diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 631531fd97a..bddcae54b16 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -201,9 +201,9 @@ static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start, temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; - if ((pg_start + mem->page_count) > num_entries) { + if ((pg_start + mem->page_count) > num_entries) return -EINVAL; - } + for (j = pg_start; j < (pg_start + mem->page_count); j++) { if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) return -EBUSY; @@ -221,7 +221,7 @@ static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start, agp_bridge->driver->tlb_flush(mem); return 0; } - if((type == AGP_PHYS_MEMORY) && (mem->type == AGP_PHYS_MEMORY)) + if ((type == AGP_PHYS_MEMORY) && (mem->type == AGP_PHYS_MEMORY)) goto insert; return -EINVAL; } @@ -328,7 +328,7 @@ static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type) static void intel_i810_free_by_type(struct agp_memory *curr) { agp_free_key(curr->key); - if(curr->type == AGP_PHYS_MEMORY) { + if (curr->type == AGP_PHYS_MEMORY) { if (curr->page_count == 4) i8xx_destroy_pages(gart_to_virt(curr->memory[0])); else { @@ -1603,11 +1603,10 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, name = "i820"; break; case PCI_DEVICE_ID_INTEL_82830_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC)) bridge->driver = &intel_830_driver; - } else { + else bridge->driver = &intel_830mp_driver; - } name = "830M"; break; case PCI_DEVICE_ID_INTEL_82840_HB: @@ -1619,11 +1618,10 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, name = "i845"; break; case PCI_DEVICE_ID_INTEL_82845G_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG)) bridge->driver = &intel_830_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "845G"; break; case PCI_DEVICE_ID_INTEL_82850_HB: @@ -1648,11 +1646,10 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, name = "i860"; break; case PCI_DEVICE_ID_INTEL_82865_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG)) bridge->driver = &intel_830_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "865"; break; case PCI_DEVICE_ID_INTEL_82875_HB: @@ -1660,35 +1657,31 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, name = "i875"; break; case PCI_DEVICE_ID_INTEL_82915G_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG)) bridge->driver = &intel_915_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "915G"; break; case PCI_DEVICE_ID_INTEL_82915GM_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG)) bridge->driver = &intel_915_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "915GM"; break; case PCI_DEVICE_ID_INTEL_82945G_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG)) bridge->driver = &intel_915_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "945G"; break; case PCI_DEVICE_ID_INTEL_82945GM_HB: - if (find_i830(PCI_DEVICE_ID_INTEL_82945GM_IG)) { + if (find_i830(PCI_DEVICE_ID_INTEL_82945GM_IG)) bridge->driver = &intel_915_driver; - } else { + else bridge->driver = &intel_845_driver; - } name = "945GM"; break; case PCI_DEVICE_ID_INTEL_7505_0: @@ -1724,7 +1717,7 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, */ r = &pdev->resource[0]; if (!r->start && r->end) { - if(pci_assign_resource(pdev, 0)) { + if (pci_assign_resource(pdev, 0)) { printk(KERN_ERR PFX "could not assign resource 0\n"); agp_put_bridge(bridge); return -ENODEV; diff --git a/drivers/char/agp/isoch.c b/drivers/char/agp/isoch.c index 7c14a096b85..3f9ccde6237 100644 --- a/drivers/char/agp/isoch.c +++ b/drivers/char/agp/isoch.c @@ -26,7 +26,7 @@ static void agp_3_5_dev_list_insert(struct list_head *head, struct list_head *ne list_for_each(pos, head) { cur = list_entry(pos, struct agp_3_5_dev, list); - if(cur->maxbw > n->maxbw) + if (cur->maxbw > n->maxbw) break; } list_add_tail(new, pos); @@ -54,9 +54,9 @@ static void agp_3_5_dev_list_sort(struct agp_3_5_dev *list, unsigned int ndevs) } } -/* - * Initialize all isochronous transfer parameters for an AGP 3.0 - * node (i.e. a host bridge in combination with the adapters +/* + * Initialize all isochronous transfer parameters for an AGP 3.0 + * node (i.e. a host bridge in combination with the adapters * lying behind it...) */ @@ -200,7 +200,7 @@ static int agp_3_5_isochronous_node_enable(struct agp_bridge_data *bridge, * this to the hungriest device (as per the spec) */ rem = target.n - tot_n; - /* + /* * Calculate the minimum isochronous RQ depth needed by each master. * Along the way, distribute the extra ISOCH_N capability calculated * above. @@ -214,7 +214,7 @@ static int agp_3_5_isochronous_node_enable(struct agp_bridge_data *bridge, * many writes on the AGP bus). */ master[cdev].rq = master[cdev].n; - if(master[cdev].y > 0x1) + if (master[cdev].y > 0x1) master[cdev].rq *= (1 << (master[cdev].y - 1)); tot_rq += master[cdev].rq; @@ -334,9 +334,9 @@ int agp_3_5_enable(struct agp_bridge_data *bridge) arqsz = (tstatus >> 13) & 0x7; - /* + /* * Allocate a head for our AGP 3.5 device list - * (multiple AGP v3 devices are allowed behind a single bridge). + * (multiple AGP v3 devices are allowed behind a single bridge). */ if ((dev_list = kmalloc(sizeof(*dev_list), GFP_KERNEL)) == NULL) { ret = -ENOMEM; @@ -366,7 +366,7 @@ int agp_3_5_enable(struct agp_bridge_data *bridge) case 0x0300: /* Display controller */ case 0x0400: /* Multimedia controller */ - if((cur = kmalloc(sizeof(*cur), GFP_KERNEL)) == NULL) { + if ((cur = kmalloc(sizeof(*cur), GFP_KERNEL)) == NULL) { ret = -ENOMEM; goto free_and_exit; } @@ -391,7 +391,7 @@ int agp_3_5_enable(struct agp_bridge_data *bridge) list_for_each(pos, head) { cur = list_entry(pos, struct agp_3_5_dev, list); dev = cur->dev; - + pci_read_config_word(dev, PCI_STATUS, &mpstat); if ((mpstat & PCI_STATUS_CAP_LIST) == 0) continue; diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c index 80dafa3030b..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 */ @@ -72,7 +73,7 @@ static int nvidia_init_iorr(u32 base, u32 size) /* Find the iorr that is already used for the base */ /* If not found, determine the uppermost available iorr */ free_iorr_addr = AMD_K7_NUM_IORR; - for(iorr_addr = 0; iorr_addr < AMD_K7_NUM_IORR; iorr_addr++) { + for (iorr_addr = 0; iorr_addr < AMD_K7_NUM_IORR; iorr_addr++) { rdmsr(IORR_BASE0 + 2 * iorr_addr, base_lo, base_hi); rdmsr(IORR_MASK0 + 2 * iorr_addr, mask_lo, mask_hi); @@ -82,7 +83,7 @@ static int nvidia_init_iorr(u32 base, u32 size) if ((mask_lo & 0x00000800) == 0) free_iorr_addr = iorr_addr; } - + if (iorr_addr >= AMD_K7_NUM_IORR) { iorr_addr = free_iorr_addr; if (iorr_addr >= AMD_K7_NUM_IORR) @@ -139,7 +140,7 @@ static int nvidia_configure(void) } /* attbase */ - for(i = 0; i < 8; i++) { + for (i = 0; i < 8; i++) { pci_write_config_dword(nvidia_private.dev_2, NVIDIA_2_ATTBASE(i), (agp_bridge->gatt_bus_addr + (i % num_dirs) * 64 * 1024) | 1); } @@ -197,15 +198,15 @@ extern int agp_memory_reserved; static int nvidia_insert_memory(struct agp_memory *mem, off_t pg_start, int type) { int i, j; - + if ((type != 0) || (mem->type != 0)) return -EINVAL; - + if ((pg_start + mem->page_count) > (nvidia_private.num_active_entries - agp_memory_reserved/PAGE_SIZE)) return -EINVAL; - - for(j = pg_start; j < (pg_start + mem->page_count); j++) { + + for (j = pg_start; j < (pg_start + mem->page_count); j++) { if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+nvidia_private.pg_offset+j))) return -EBUSY; } @@ -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"); } @@ -264,9 +265,9 @@ static void nvidia_tlbflush(struct agp_memory *mem) } /* flush TLB entries */ - for(i = 0; i < 32 + 1; i++) + for (i = 0; i < 32 + 1; i++) temp = readl(nvidia_private.aperture+(i * PAGE_SIZE / sizeof(u32))); - for(i = 0; i < 32 + 1; i++) + for (i = 0; i < 32 + 1; i++) temp = readl(nvidia_private.aperture+(i * PAGE_SIZE / sizeof(u32))); } @@ -323,7 +324,7 @@ static int __devinit agp_nvidia_probe(struct pci_dev *pdev, pci_find_slot((unsigned int)pdev->bus->number, PCI_DEVFN(0, 2)); nvidia_private.dev_3 = pci_find_slot((unsigned int)pdev->bus->number, PCI_DEVFN(30, 0)); - + if (!nvidia_private.dev_1 || !nvidia_private.dev_2 || !nvidia_private.dev_3) { printk(KERN_INFO PFX "Detected an NVIDIA nForce/nForce2 " "chipset, but could not find the secondary devices.\n"); diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c index 4df7734b51c..cfa7922cb43 100644 --- a/drivers/char/agp/sgi-agp.c +++ b/drivers/char/agp/sgi-agp.c @@ -329,7 +329,7 @@ static int __devinit agp_sgi_init(void) static void __devexit agp_sgi_cleanup(void) { - if(sgi_tioca_agp_bridges) + if (sgi_tioca_agp_bridges) kfree(sgi_tioca_agp_bridges); sgi_tioca_agp_bridges=NULL; } diff --git a/drivers/char/agp/sis-agp.c b/drivers/char/agp/sis-agp.c index ebc05554045..a00fd48a6f0 100644 --- a/drivers/char/agp/sis-agp.c +++ b/drivers/char/agp/sis-agp.c @@ -121,7 +121,7 @@ static struct aper_size_info_8 sis_generic_sizes[7] = static struct agp_bridge_driver sis_driver = { .owner = THIS_MODULE, - .aperture_sizes = sis_generic_sizes, + .aperture_sizes = sis_generic_sizes, .size_type = U8_APER_SIZE, .num_aperture_sizes = 7, .configure = sis_configure, @@ -243,11 +243,11 @@ static void __devinit sis_get_driver(struct agp_bridge_data *bridge) { int i; - for(i=0; sis_broken_chipsets[i]!=0; ++i) - if(bridge->dev->device==sis_broken_chipsets[i]) + for (i=0; sis_broken_chipsets[i]!=0; ++i) + if (bridge->dev->device==sis_broken_chipsets[i]) break; - if(sis_broken_chipsets[i] || agp_sis_force_delay) + if (sis_broken_chipsets[i] || agp_sis_force_delay) sis_driver.agp_enable=sis_delayed_enable; // sis chipsets that indicate less than agp3.5 diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c index efef9999f1c..4f2d7d99902 100644 --- a/drivers/char/agp/sworks-agp.c +++ b/drivers/char/agp/sworks-agp.c @@ -64,7 +64,7 @@ static int serverworks_create_page_map(struct serverworks_page_map *page_map) } global_cache_flush(); - for(i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) + for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) writel(agp_bridge->scratch_page, page_map->remapped+i); return 0; @@ -84,7 +84,7 @@ static void serverworks_free_gatt_pages(void) struct serverworks_page_map *entry; tables = serverworks_private.gatt_pages; - for(i = 0; i < serverworks_private.num_tables; i++) { + for (i = 0; i < serverworks_private.num_tables; i++) { entry = tables[i]; if (entry != NULL) { if (entry->real != NULL) { @@ -103,7 +103,7 @@ static int serverworks_create_gatt_pages(int nr_tables) int retval = 0; int i; - tables = kzalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *), + tables = kzalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *), GFP_KERNEL); if (tables == NULL) return -ENOMEM; @@ -161,7 +161,7 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge) return retval; } /* Create a fake scratch directory */ - for(i = 0; i < 1024; i++) { + for (i = 0; i < 1024; i++) { writel(agp_bridge->scratch_page, serverworks_private.scratch_dir.remapped+i); writel(virt_to_gart(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i); } @@ -185,9 +185,8 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge) pci_read_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,&temp); agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); - /* Calculate the agp offset */ - - for(i = 0; i < value->num_entries / 1024; i++) + /* Calculate the agp offset */ + for (i = 0; i < value->num_entries / 1024; i++) writel(virt_to_gart(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i); return 0; @@ -196,7 +195,7 @@ static int serverworks_create_gatt_table(struct agp_bridge_data *bridge) static int serverworks_free_gatt_table(struct agp_bridge_data *bridge) { struct serverworks_page_map page_dir; - + page_dir.real = (unsigned long *)agp_bridge->gatt_table_real; page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table; diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 50947e38501..9846defbddb 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -95,12 +95,12 @@ static void uninorth_cleanup(void) static int uninorth_configure(void) { struct aper_size_info_32 *current_size; - + current_size = A_SIZE_32(agp_bridge->current_size); printk(KERN_INFO PFX "configuring for size idx: %d\n", current_size->size_value); - + /* aperture size and gatt addr */ pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_BASE, @@ -127,7 +127,7 @@ static int uninorth_configure(void) UNI_N_CFG_GART_DUMMY_PAGE, agp_bridge->scratch_page_real >> 12); } - + return 0; } @@ -162,7 +162,7 @@ static int uninorth_insert_memory(struct agp_memory *mem, off_t pg_start, } (void)in_le32((volatile u32*)&agp_bridge->gatt_table[pg_start]); mb(); - flush_dcache_range((unsigned long)&agp_bridge->gatt_table[pg_start], + flush_dcache_range((unsigned long)&agp_bridge->gatt_table[pg_start], (unsigned long)&agp_bridge->gatt_table[pg_start + mem->page_count]); uninorth_tlbflush(mem); @@ -235,7 +235,7 @@ static void uninorth_agp_enable(struct agp_bridge_data *bridge, u32 mode) command = agp_collect_device_status(bridge, mode, status); command |= PCI_AGP_COMMAND_AGP; - + if (uninorth_rev == 0x21) { /* * Darwin disable AGP 4x on this revision, thus we @@ -456,7 +456,7 @@ static struct aper_size_info_32 uninorth_sizes[7] = {256, 65536, 6, 64}, {128, 32768, 5, 32}, {64, 16384, 4, 16}, -#endif +#endif {32, 8192, 3, 8}, {16, 4096, 2, 4}, {8, 2048, 1, 2}, 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/generic_nvram.c b/drivers/char/generic_nvram.c index 1b5e01e6e12..43ff5981651 100644 --- a/drivers/char/generic_nvram.c +++ b/drivers/char/generic_nvram.c @@ -22,6 +22,9 @@ #include <linux/smp_lock.h> #include <asm/uaccess.h> #include <asm/nvram.h> +#ifdef CONFIG_PPC_PMAC +#include <asm/machdep.h> +#endif #define NVRAM_SIZE 8192 @@ -92,7 +95,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file, case IOC_NVRAM_GET_OFFSET: { int part, offset; - if (_machine != _MACH_Pmac) + if (!machine_is(powermac)) return -EINVAL; if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0) return -EFAULT; diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index f65b2e14a48..2b6a56b2bf3 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -39,8 +39,10 @@ #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/delay.h> + #include <asm/uaccess.h> -#include <asm/hvconsole.h> + +#include "hvc_console.h" #define HVC_MAJOR 229 #define HVC_MINOR 0 @@ -54,17 +56,14 @@ #define HVC_CLOSE_WAIT (HZ/100) /* 1/10 of a second */ /* - * The Linux TTY code does not support dynamic addition of tty derived devices - * so we need to know how many tty devices we might need when space is allocated - * for the tty device. Since this driver supports hotplug of vty adapters we - * need to make sure we have enough allocated. + * These sizes are most efficient for vio, because they are the + * native transfer size. We could make them selectable in the + * future to better deal with backends that want other buffer sizes. */ -#define HVC_ALLOC_TTY_ADAPTERS 8 - #define N_OUTBUF 16 #define N_INBUF 16 -#define __ALIGNED__ __attribute__((__aligned__(8))) +#define __ALIGNED__ __attribute__((__aligned__(sizeof(long)))) static struct tty_driver *hvc_driver; static struct task_struct *hvc_task; @@ -154,7 +153,7 @@ static uint32_t vtermnos[MAX_NR_HVC_CONSOLES] = void hvc_console_print(struct console *co, const char *b, unsigned count) { - char c[16] __ALIGNED__; + char c[N_OUTBUF] __ALIGNED__; unsigned i = 0, n = 0; int r, donecr = 0, index = co->index; @@ -473,8 +472,10 @@ static void hvc_push(struct hvc_struct *hp) n = hp->ops->put_chars(hp->vtermno, hp->outbuf, hp->n_outbuf); if (n <= 0) { - if (n == 0) + if (n == 0) { + hp->do_wakeup = 1; return; + } /* throw away output on error; this happens when there is no session connected to the vterm. */ hp->n_outbuf = 0; @@ -486,12 +487,19 @@ static void hvc_push(struct hvc_struct *hp) hp->do_wakeup = 1; } -static inline int __hvc_write_kernel(struct hvc_struct *hp, - const unsigned char *buf, int count) +static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count) { + struct hvc_struct *hp = tty->driver_data; unsigned long flags; int rsize, written = 0; + /* This write was probably executed during a tty close. */ + if (!hp) + return -EPIPE; + + if (hp->count <= 0) + return -EIO; + spin_lock_irqsave(&hp->lock, flags); /* Push pending writes */ @@ -510,26 +518,8 @@ static inline int __hvc_write_kernel(struct hvc_struct *hp, } spin_unlock_irqrestore(&hp->lock, flags); - return written; -} -static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count) -{ - struct hvc_struct *hp = tty->driver_data; - int written; - - /* This write was probably executed during a tty close. */ - if (!hp) - return -EPIPE; - - if (hp->count <= 0) - return -EIO; - - written = __hvc_write_kernel(hp, buf, count); - /* * Racy, but harmless, kick thread if there is still pending data. - * There really is nothing wrong with kicking the thread, even if there - * is no buffered data. */ if (hp->n_outbuf) hvc_kick(); @@ -614,6 +604,13 @@ static int hvc_poll(struct hvc_struct *hp) spin_unlock_irqrestore(&hp->lock, flags); tty_hangup(tty); spin_lock_irqsave(&hp->lock, flags); + } else if ( n == -EAGAIN ) { + /* + * Some back-ends can only ensure a certain min + * num of bytes read, which may be > 'count'. + * Let the tty clear the flip buff to make room. + */ + poll_mask |= HVC_POLL_READ; } break; } @@ -635,16 +632,7 @@ static int hvc_poll(struct hvc_struct *hp) tty_insert_flip_char(tty, buf[i], 0); } - /* - * Account for the total amount read in one loop, and if above - * 64 bytes, we do a quick schedule loop to let the tty grok - * the data and eventually throttle us. - */ read_total += n; - if (read_total >= 64) { - poll_mask |= HVC_POLL_QUICK; - break; - } } throttled: /* Wakeup write queue if necessary */ @@ -767,7 +755,8 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq, * see if this vterm id matches one registered for console. */ for (i=0; i < MAX_NR_HVC_CONSOLES; i++) - if (vtermnos[i] == hp->vtermno) + if (vtermnos[i] == hp->vtermno && + cons_ops[i] == hp->ops) break; /* no matching slot, just use a counter */ @@ -823,34 +812,38 @@ EXPORT_SYMBOL(hvc_remove); * interfaces start to become available. */ int __init hvc_init(void) { + struct tty_driver *drv; + /* We need more than hvc_count adapters due to hotplug additions. */ - hvc_driver = alloc_tty_driver(HVC_ALLOC_TTY_ADAPTERS); - if (!hvc_driver) + drv = alloc_tty_driver(HVC_ALLOC_TTY_ADAPTERS); + if (!drv) return -ENOMEM; - hvc_driver->owner = THIS_MODULE; - hvc_driver->devfs_name = "hvc/"; - hvc_driver->driver_name = "hvc"; - hvc_driver->name = "hvc"; - hvc_driver->major = HVC_MAJOR; - hvc_driver->minor_start = HVC_MINOR; - hvc_driver->type = TTY_DRIVER_TYPE_SYSTEM; - hvc_driver->init_termios = tty_std_termios; - hvc_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(hvc_driver, &hvc_ops); + drv->owner = THIS_MODULE; + drv->devfs_name = "hvc/"; + drv->driver_name = "hvc"; + drv->name = "hvc"; + drv->major = HVC_MAJOR; + drv->minor_start = HVC_MINOR; + drv->type = TTY_DRIVER_TYPE_SYSTEM; + drv->init_termios = tty_std_termios; + drv->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(drv, &hvc_ops); /* Always start the kthread because there can be hotplug vty adapters * added later. */ hvc_task = kthread_run(khvcd, NULL, "khvcd"); if (IS_ERR(hvc_task)) { panic("Couldn't create kthread for console.\n"); - put_tty_driver(hvc_driver); + put_tty_driver(drv); return -EIO; } - if (tty_register_driver(hvc_driver)) + if (tty_register_driver(drv)) panic("Couldn't register hvc console driver\n"); + mb(); + hvc_driver = drv; return 0; } module_init(hvc_init); diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h new file mode 100644 index 00000000000..96b7401319c --- /dev/null +++ b/drivers/char/hvc_console.h @@ -0,0 +1,63 @@ +/* + * hvc_console.h + * Copyright (C) 2005 IBM Corporation + * + * Author(s): + * Ryan S. Arnold <rsa@us.ibm.com> + * + * hvc_console header information: + * moved here from include/asm-powerpc/hvconsole.h + * and drivers/char/hvc_console.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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef HVC_CONSOLE_H +#define HVC_CONSOLE_H + +/* + * This is the max number of console adapters that can/will be found as + * console devices on first stage console init. Any number beyond this range + * can't be used as a console device but is still a valid tty device. + */ +#define MAX_NR_HVC_CONSOLES 16 + +/* + * The Linux TTY code does not support dynamic addition of tty derived devices + * so we need to know how many tty devices we might need when space is allocated + * for the tty device. Since this driver supports hotplug of vty adapters we + * need to make sure we have enough allocated. + */ +#define HVC_ALLOC_TTY_ADAPTERS 8 + + +/* implemented by a low level driver */ +struct hv_ops { + int (*get_chars)(uint32_t vtermno, char *buf, int count); + int (*put_chars)(uint32_t vtermno, const char *buf, int count); +}; + +struct hvc_struct; + +/* Register a vterm and a slot index for use as a console (console_init) */ +extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops); + +/* register a vterm for hvc tty operation (module_init or hotplug add) */ +extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int irq, + struct hv_ops *ops); +/* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */ +extern int __devexit hvc_remove(struct hvc_struct *hp); + +#endif // HVC_CONSOLE_H diff --git a/drivers/char/hvc_rtas.c b/drivers/char/hvc_rtas.c new file mode 100644 index 00000000000..83364ea63cb --- /dev/null +++ b/drivers/char/hvc_rtas.c @@ -0,0 +1,138 @@ +/* + * IBM RTAS driver interface to hvc_console.c + * + * (C) Copyright IBM Corporation 2001-2005 + * (C) Copyright Red Hat, Inc. 2005 + * + * Author(s): Maximino Augilar <IBM STI Design Center> + * : Ryan S. Arnold <rsa@us.ibm.com> + * : Utz Bacher <utz.bacher@de.ibm.com> + * : David Woodhouse <dwmw2@infradead.org> + * + * inspired by drivers/char/hvc_console.c + * written by Anton Blanchard and Paul Mackerras + * + * 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 distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/init.h> +#include <linux/moduleparam.h> +#include <linux/types.h> + +#include <asm/irq.h> +#include <asm/rtas.h> +#include "hvc_console.h" + +#define hvc_rtas_cookie 0x67781e15 +struct hvc_struct *hvc_rtas_dev; + +#define RTASCONS_PUT_ATTEMPTS 16 + +static int rtascons_put_char_token = RTAS_UNKNOWN_SERVICE; +static int rtascons_get_char_token = RTAS_UNKNOWN_SERVICE; +static int rtascons_put_delay = 100; +module_param_named(put_delay, rtascons_put_delay, int, 0644); + +static inline int hvc_rtas_write_console(uint32_t vtermno, const char *buf, int count) +{ + int done; + + /* if there is more than one character to be displayed, wait a bit */ + for (done = 0; done < count; done++) { + int result; + result = rtas_call(rtascons_put_char_token, 1, 1, NULL, buf[done]); + if (result) + break; + } + /* the calling routine expects to receive the number of bytes sent */ + return done; +} + +static int hvc_rtas_read_console(uint32_t vtermno, char *buf, int count) +{ + int i; + + for (i = 0; i < count; i++) { + int c, err; + + err = rtas_call(rtascons_get_char_token, 0, 2, &c); + if (err) + break; + + buf[i] = c; + } + + return i; +} + +static struct hv_ops hvc_rtas_get_put_ops = { + .get_chars = hvc_rtas_read_console, + .put_chars = hvc_rtas_write_console, +}; + +static int hvc_rtas_init(void) +{ + struct hvc_struct *hp; + + if (rtascons_put_char_token == RTAS_UNKNOWN_SERVICE) + rtascons_put_char_token = rtas_token("put-term-char"); + if (rtascons_put_char_token == RTAS_UNKNOWN_SERVICE) + return -EIO; + + if (rtascons_get_char_token == RTAS_UNKNOWN_SERVICE) + rtascons_get_char_token = rtas_token("get-term-char"); + if (rtascons_get_char_token == RTAS_UNKNOWN_SERVICE) + return -EIO; + + BUG_ON(hvc_rtas_dev); + + /* Allocate an hvc_struct for the console device we instantiated + * earlier. Save off hp so that we can return it on exit */ + hp = hvc_alloc(hvc_rtas_cookie, NO_IRQ, &hvc_rtas_get_put_ops); + if (IS_ERR(hp)) + return PTR_ERR(hp); + hvc_rtas_dev = hp; + return 0; +} +module_init(hvc_rtas_init); + +/* This will tear down the tty portion of the driver */ +static void __exit hvc_rtas_exit(void) +{ + /* Really the fun isn't over until the worker thread breaks down and the + * tty cleans up */ + if (hvc_rtas_dev) + hvc_remove(hvc_rtas_dev); +} +module_exit(hvc_rtas_exit); + +/* This will happen prior to module init. There is no tty at this time? */ +static int hvc_rtas_console_init(void) +{ + rtascons_put_char_token = rtas_token("put-term-char"); + if (rtascons_put_char_token == RTAS_UNKNOWN_SERVICE) + return -EIO; + rtascons_get_char_token = rtas_token("get-term-char"); + if (rtascons_get_char_token == RTAS_UNKNOWN_SERVICE) + return -EIO; + + hvc_instantiate(hvc_rtas_cookie, 0, &hvc_rtas_get_put_ops ); + add_preferred_console("hvc", 0, NULL); + return 0; +} +console_initcall(hvc_rtas_console_init); diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c index f5212eb2b41..9add81ceb44 100644 --- a/drivers/char/hvc_vio.c +++ b/drivers/char/hvc_vio.c @@ -31,10 +31,13 @@ #include <linux/types.h> #include <linux/init.h> + #include <asm/hvconsole.h> #include <asm/vio.h> #include <asm/prom.h> +#include "hvc_console.h" + char hvc_driver_name[] = "hvc_console"; static struct vio_device_id hvc_driver_table[] __devinitdata = { @@ -48,6 +51,14 @@ static int filtered_get_chars(uint32_t vtermno, char *buf, int count) unsigned long got; int i; + /* + * Vio firmware will read up to SIZE_VIO_GET_CHARS at its own discretion + * so we play safe and avoid the situation where got > count which could + * overload the flip buffer. + */ + if (count < SIZE_VIO_GET_CHARS) + return -EAGAIN; + got = hvc_get_chars(vtermno, buf, count); /* diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c index f7ac3185657..327b00c3c45 100644 --- a/drivers/char/hvcs.c +++ b/drivers/char/hvcs.c @@ -439,7 +439,6 @@ static int hvcs_io(struct hvcs_struct *hvcsd) char buf[HVCS_BUFF_LEN] __ALIGNED__; unsigned long flags; int got = 0; - int i; spin_lock_irqsave(&hvcsd->lock, flags); 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 d745004281d..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); } } @@ -736,7 +770,8 @@ int ipmi_create_user(unsigned int if_num, intf = ipmi_interfaces[if_num]; if ((if_num >= MAX_IPMI_INTERFACES) || IPMI_INVALID_INTERFACE(intf)) { spin_unlock_irqrestore(&interfaces_lock, flags); - return -EINVAL; + rv = -EINVAL; + goto out_kfree; } /* Note that each existing user holds a refcount to the interface. */ @@ -751,14 +786,14 @@ int ipmi_create_user(unsigned int if_num, if (!try_module_get(intf->handlers->owner)) { rv = -ENODEV; - goto out_err; + goto out_kref; } if (intf->handlers->inc_usecount) { rv = intf->handlers->inc_usecount(intf->send_info); if (rv) { module_put(intf->handlers->owner); - goto out_err; + goto out_kref; } } @@ -769,9 +804,10 @@ int ipmi_create_user(unsigned int if_num, *user = new_user; return 0; - out_err: - kfree(new_user); +out_kref: kref_put(&intf->refcount, intf_free); +out_kfree: + kfree(new_user); return rv; } @@ -842,8 +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, @@ -1551,7 +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, @@ -1710,6 +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) { @@ -1802,8 +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) { @@ -1811,7 +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. */ @@ -1829,10 +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; @@ -1882,6 +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))) { @@ -1896,6 +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; @@ -1905,6 +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) @@ -1919,7 +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; @@ -1931,6 +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) { @@ -3194,10 +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"); @@ -3220,7 +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; @@ -3240,7 +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. */ @@ -3254,6 +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/istallion.c b/drivers/char/istallion.c index ede128356af..e5247f85a44 100644 --- a/drivers/char/istallion.c +++ b/drivers/char/istallion.c @@ -378,13 +378,13 @@ MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); MODULE_LICENSE("GPL"); -MODULE_PARM(board0, "1-3s"); +module_param_array(board0, charp, NULL, 0); MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board1, "1-3s"); +module_param_array(board1, charp, NULL, 0); MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board2, "1-3s"); +module_param_array(board2, charp, NULL, 0); MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); -MODULE_PARM(board3, "1-3s"); +module_param_array(board3, charp, NULL, 0); MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); #endif diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 29c41f4418c..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; @@ -216,11 +210,9 @@ static ssize_t write_mem(struct file * file, const char __user * buf, copied = copy_from_user(ptr, buf, sz); if (copied) { - ssize_t ret; - - ret = written + (sz - copied); - if (ret) - return ret; + written += sz - copied; + if (written) + break; return -EFAULT; } buf += sz; @@ -251,7 +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, @@ -456,11 +448,9 @@ do_write_kmem(void *p, unsigned long realp, const char __user * buf, copied = copy_from_user(ptr, buf, sz); if (copied) { - ssize_t ret; - - ret = written + (sz - copied); - if (ret) - return ret; + written += sz - copied; + if (written) + break; return -EFAULT; } buf += sz; @@ -514,11 +504,10 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, if (len) { written = copy_from_user(kbuf, buf, len); if (written) { - ssize_t ret; - + if (wrote + virtr) + break; free_page((unsigned long)kbuf); - ret = wrote + virtr + (len - written); - return ret ? ret : -EFAULT; + return -EFAULT; } } len = vwrite(kbuf, (char *)p, len); @@ -563,8 +552,11 @@ static ssize_t write_port(struct file * file, const char __user * buf, return -EFAULT; while (count-- > 0 && i < 65536) { char c; - if (__get_user(c, tmp)) + if (__get_user(c, tmp)) { + if (tmp > buf) + break; return -EFAULT; + } outb(c,i); i++; tmp++; @@ -907,7 +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.c b/drivers/char/mxser.c index ea725a9964e..0fb2fb9fb02 100644 --- a/drivers/char/mxser.c +++ b/drivers/char/mxser.c @@ -243,10 +243,10 @@ static int verbose = 0; MODULE_AUTHOR("Casper Yang"); MODULE_DESCRIPTION("MOXA Smartio/Industio Family Multiport Board Device Driver"); -MODULE_PARM(ioaddr, "1-4i"); -MODULE_PARM(ttymajor, "i"); -MODULE_PARM(calloutmajor, "i"); -MODULE_PARM(verbose, "i"); +module_param_array(ioaddr, int, NULL, 0); +module_param(ttymajor, int, 0); +module_param(calloutmajor, int, 0); +module_param(verbose, bool, 0); MODULE_LICENSE("GPL"); struct mxser_log { 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/ppdev.c b/drivers/char/ppdev.c index 306ee0f091a..bee6c47b45b 100644 --- a/drivers/char/ppdev.c +++ b/drivers/char/ppdev.c @@ -65,10 +65,11 @@ #include <linux/parport.h> #include <linux/ctype.h> #include <linux/poll.h> -#include <asm/uaccess.h> +#include <linux/major.h> #include <linux/ppdev.h> #include <linux/smp_lock.h> #include <linux/device.h> +#include <asm/uaccess.h> #define PP_VERSION "ppdev: user-space parallel port driver" #define CHRDEV "ppdev" diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index 119e629656b..657c0d88f48 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -1743,10 +1743,10 @@ static int iobase; static int iobase1; static int iobase2; static int iobase3; -MODULE_PARM(iobase, "i"); -MODULE_PARM(iobase1, "i"); -MODULE_PARM(iobase2, "i"); -MODULE_PARM(iobase3, "i"); +module_param(iobase, int, 0); +module_param(iobase1, int, 0); +module_param(iobase2, int, 0); +module_param(iobase3, int, 0); MODULE_LICENSE("GPL"); #endif /* MODULE */ 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/sysrq.c b/drivers/char/sysrq.c index d58f8231885..35082dc12ea 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -42,16 +42,15 @@ /* Whether we react on sysrq keys or just ignore them */ int sysrq_enabled = 1; -/* Loglevel sysrq handler */ static void sysrq_handle_loglevel(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { int i; i = key - '0'; console_loglevel = 7; printk("Loglevel set to %d\n", i); console_loglevel = i; -} +} static struct sysrq_key_op sysrq_loglevel_op = { .handler = sysrq_handle_loglevel, .help_msg = "loglevel0-8", @@ -59,11 +58,9 @@ static struct sysrq_key_op sysrq_loglevel_op = { .enable_mask = SYSRQ_ENABLE_LOG, }; - -/* SAK sysrq handler */ #ifdef CONFIG_VT static void sysrq_handle_SAK(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { if (tty) do_SAK(tty); @@ -75,12 +72,13 @@ static struct sysrq_key_op sysrq_SAK_op = { .action_msg = "SAK", .enable_mask = SYSRQ_ENABLE_KEYBOARD, }; +#else +#define sysrq_SAK_op (*(struct sysrq_key_op *)0) #endif #ifdef CONFIG_VT -/* unraw sysrq handler */ static void sysrq_handle_unraw(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { struct kbd_struct *kbd = &kbd_table[fg_console]; @@ -93,10 +91,11 @@ static struct sysrq_key_op sysrq_unraw_op = { .action_msg = "Keyboard mode set to XLATE", .enable_mask = SYSRQ_ENABLE_KEYBOARD, }; +#else +#define sysrq_unraw_op (*(struct sysrq_key_op *)0) #endif /* CONFIG_VT */ #ifdef CONFIG_KEXEC -/* crashdump sysrq handler */ static void sysrq_handle_crashdump(int key, struct pt_regs *pt_regs, struct tty_struct *tty) { @@ -108,16 +107,16 @@ static struct sysrq_key_op sysrq_crashdump_op = { .action_msg = "Trigger a crashdump", .enable_mask = SYSRQ_ENABLE_DUMP, }; +#else +#define sysrq_crashdump_op (*(struct sysrq_key_op *)0) #endif -/* reboot sysrq handler */ static void sysrq_handle_reboot(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { local_irq_enable(); emergency_restart(); } - static struct sysrq_key_op sysrq_reboot_op = { .handler = sysrq_handle_reboot, .help_msg = "reBoot", @@ -126,11 +125,10 @@ static struct sysrq_key_op sysrq_reboot_op = { }; static void sysrq_handle_sync(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { emergency_sync(); } - static struct sysrq_key_op sysrq_sync_op = { .handler = sysrq_handle_sync, .help_msg = "Sync", @@ -139,11 +137,10 @@ static struct sysrq_key_op sysrq_sync_op = { }; static void sysrq_handle_mountro(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { emergency_remount(); } - static struct sysrq_key_op sysrq_mountro_op = { .handler = sysrq_handle_mountro, .help_msg = "Unmount", @@ -151,28 +148,23 @@ static struct sysrq_key_op sysrq_mountro_op = { .enable_mask = SYSRQ_ENABLE_REMOUNT, }; -/* END SYNC SYSRQ HANDLERS BLOCK */ - #ifdef CONFIG_DEBUG_MUTEXES - -static void -sysrq_handle_showlocks(int key, struct pt_regs *pt_regs, struct tty_struct *tty) +static void sysrq_handle_showlocks(int key, struct pt_regs *pt_regs, + struct tty_struct *tty) { mutex_debug_show_all_locks(); } - static struct sysrq_key_op sysrq_showlocks_op = { .handler = sysrq_handle_showlocks, .help_msg = "show-all-locks(D)", .action_msg = "Show Locks Held", }; - +#else +#define sysrq_showlocks_op (*(struct sysrq_key_op *)0) #endif -/* SHOW SYSRQ HANDLERS BLOCK */ - static void sysrq_handle_showregs(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { if (pt_regs) show_regs(pt_regs); @@ -184,9 +176,8 @@ static struct sysrq_key_op sysrq_showregs_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; - static void sysrq_handle_showstate(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { show_state(); } @@ -197,9 +188,8 @@ static struct sysrq_key_op sysrq_showstate_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; - static void sysrq_handle_showmem(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { show_mem(); } @@ -210,13 +200,9 @@ static struct sysrq_key_op sysrq_showmem_op = { .enable_mask = SYSRQ_ENABLE_DUMP, }; -/* SHOW SYSRQ HANDLERS BLOCK */ - - -/* SIGNAL SYSRQ HANDLERS BLOCK */ - -/* signal sysrq helper function - * Sends a signal to all user processes */ +/* + * Signal sysrq helper function. Sends a signal to all user processes. + */ static void send_sig_all(int sig) { struct task_struct *p; @@ -229,7 +215,7 @@ static void send_sig_all(int sig) } static void sysrq_handle_term(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { send_sig_all(SIGTERM); console_loglevel = 8; @@ -243,7 +229,8 @@ static struct sysrq_key_op sysrq_term_op = { static void moom_callback(void *ignored) { - out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL], GFP_KERNEL, 0); + out_of_memory(&NODE_DATA(0)->node_zonelists[ZONE_NORMAL], + GFP_KERNEL, 0); } static DECLARE_WORK(moom_work, moom_callback, NULL); @@ -260,7 +247,7 @@ static struct sysrq_key_op sysrq_moom_op = { }; static void sysrq_handle_kill(int key, struct pt_regs *pt_regs, - struct tty_struct *tty) + struct tty_struct *tty) { send_sig_all(SIGKILL); console_loglevel = 8; @@ -272,8 +259,6 @@ static struct sysrq_key_op sysrq_kill_op = { .enable_mask = SYSRQ_ENABLE_SIGNAL, }; -/* END SIGNAL SYSRQ HANDLERS BLOCK */ - static void sysrq_handle_unrt(int key, struct pt_regs *pt_regs, struct tty_struct *tty) { @@ -288,110 +273,99 @@ static struct sysrq_key_op sysrq_unrt_op = { /* Key Operations table and lock */ static DEFINE_SPINLOCK(sysrq_key_table_lock); -#define SYSRQ_KEY_TABLE_LENGTH 36 -static struct sysrq_key_op *sysrq_key_table[SYSRQ_KEY_TABLE_LENGTH] = { -/* 0 */ &sysrq_loglevel_op, -/* 1 */ &sysrq_loglevel_op, -/* 2 */ &sysrq_loglevel_op, -/* 3 */ &sysrq_loglevel_op, -/* 4 */ &sysrq_loglevel_op, -/* 5 */ &sysrq_loglevel_op, -/* 6 */ &sysrq_loglevel_op, -/* 7 */ &sysrq_loglevel_op, -/* 8 */ &sysrq_loglevel_op, -/* 9 */ &sysrq_loglevel_op, -/* a */ NULL, /* Don't use for system provided sysrqs, - it is handled specially on the sparc - and will never arrive */ -/* b */ &sysrq_reboot_op, -#ifdef CONFIG_KEXEC -/* c */ &sysrq_crashdump_op, -#else -/* c */ NULL, -#endif -#ifdef CONFIG_DEBUG_MUTEXES -/* d */ &sysrq_showlocks_op, -#else -/* d */ NULL, -#endif -/* e */ &sysrq_term_op, -/* f */ &sysrq_moom_op, -/* g */ NULL, -/* h */ NULL, -/* i */ &sysrq_kill_op, -/* j */ NULL, -#ifdef CONFIG_VT -/* k */ &sysrq_SAK_op, -#else -/* k */ NULL, -#endif -/* l */ NULL, -/* m */ &sysrq_showmem_op, -/* n */ &sysrq_unrt_op, -/* o */ NULL, /* This will often be registered - as 'Off' at init time */ -/* p */ &sysrq_showregs_op, -/* q */ NULL, -#ifdef CONFIG_VT -/* r */ &sysrq_unraw_op, -#else -/* r */ NULL, -#endif -/* s */ &sysrq_sync_op, -/* t */ &sysrq_showstate_op, -/* u */ &sysrq_mountro_op, -/* v */ NULL, /* May be assigned at init time by SMP VOYAGER */ -/* w */ NULL, -/* x */ NULL, -/* y */ NULL, -/* z */ NULL + +static struct sysrq_key_op *sysrq_key_table[36] = { + &sysrq_loglevel_op, /* 0 */ + &sysrq_loglevel_op, /* 1 */ + &sysrq_loglevel_op, /* 2 */ + &sysrq_loglevel_op, /* 3 */ + &sysrq_loglevel_op, /* 4 */ + &sysrq_loglevel_op, /* 5 */ + &sysrq_loglevel_op, /* 6 */ + &sysrq_loglevel_op, /* 7 */ + &sysrq_loglevel_op, /* 8 */ + &sysrq_loglevel_op, /* 9 */ + + /* + * Don't use for system provided sysrqs, it is handled specially on + * sparc and will never arrive + */ + NULL, /* a */ + &sysrq_reboot_op, /* b */ + &sysrq_crashdump_op, /* c */ + &sysrq_showlocks_op, /* d */ + &sysrq_term_op, /* e */ + &sysrq_moom_op, /* f */ + NULL, /* g */ + NULL, /* h */ + &sysrq_kill_op, /* i */ + NULL, /* j */ + &sysrq_SAK_op, /* k */ + NULL, /* l */ + &sysrq_showmem_op, /* m */ + &sysrq_unrt_op, /* n */ + /* This will often be registered as 'Off' at init time */ + NULL, /* o */ + &sysrq_showregs_op, /* p */ + NULL, /* q */ + &sysrq_unraw_op, /* r */ + &sysrq_sync_op, /* s */ + &sysrq_showstate_op, /* t */ + &sysrq_mountro_op, /* u */ + /* May be assigned at init time by SMP VOYAGER */ + NULL, /* v */ + NULL, /* w */ + NULL, /* x */ + NULL, /* y */ + NULL /* z */ }; /* key2index calculation, -1 on invalid index */ -static int sysrq_key_table_key2index(int key) { +static int sysrq_key_table_key2index(int key) +{ int retval; - if ((key >= '0') && (key <= '9')) { + + if ((key >= '0') && (key <= '9')) retval = key - '0'; - } else if ((key >= 'a') && (key <= 'z')) { + else if ((key >= 'a') && (key <= 'z')) retval = key + 10 - 'a'; - } else { + else retval = -1; - } return retval; } /* * get and put functions for the table, exposed to modules. */ - -struct sysrq_key_op *__sysrq_get_key_op (int key) { - struct sysrq_key_op *op_p; +struct sysrq_key_op *__sysrq_get_key_op(int key) +{ + struct sysrq_key_op *op_p = NULL; int i; - + i = sysrq_key_table_key2index(key); - op_p = (i == -1) ? NULL : sysrq_key_table[i]; + if (i != -1) + op_p = sysrq_key_table[i]; return op_p; } -static void __sysrq_put_key_op (int key, struct sysrq_key_op *op_p) { - int i; +static void __sysrq_put_key_op(int key, struct sysrq_key_op *op_p) +{ + int i = sysrq_key_table_key2index(key); - i = sysrq_key_table_key2index(key); if (i != -1) sysrq_key_table[i] = op_p; } /* - * This is the non-locking version of handle_sysrq - * It must/can only be called by sysrq key handlers, - * as they are inside of the lock + * This is the non-locking version of handle_sysrq. It must/can only be called + * by sysrq key handlers, as they are inside of the lock */ - -void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty, int check_mask) +void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty, + int check_mask) { struct sysrq_key_op *op_p; int orig_log_level; - int i, j; + int i; unsigned long flags; spin_lock_irqsave(&sysrq_key_table_lock, flags); @@ -401,26 +375,34 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty, in op_p = __sysrq_get_key_op(key); if (op_p) { - /* Should we check for enabled operations (/proc/sysrq-trigger should not) - * and is the invoked operation enabled? */ + /* + * Should we check for enabled operations (/proc/sysrq-trigger + * should not) and is the invoked operation enabled? + */ if (!check_mask || sysrq_enabled == 1 || (sysrq_enabled & op_p->enable_mask)) { - printk ("%s\n", op_p->action_msg); + printk("%s\n", op_p->action_msg); console_loglevel = orig_log_level; op_p->handler(key, pt_regs, tty); - } - else + } else { printk("This sysrq operation is disabled.\n"); + } } else { printk("HELP : "); /* Only print the help msg once per handler */ - for (i=0; i<SYSRQ_KEY_TABLE_LENGTH; i++) - if (sysrq_key_table[i]) { - for (j=0; sysrq_key_table[i] != sysrq_key_table[j]; j++); - if (j == i) - printk ("%s ", sysrq_key_table[i]->help_msg); + for (i = 0; i < ARRAY_SIZE(sysrq_key_table); i++) { + if (sysrq_key_table[i]) { + int j; + + for (j = 0; sysrq_key_table[i] != + sysrq_key_table[j]; j++) + ; + if (j != i) + continue; + printk("%s ", sysrq_key_table[i]->help_msg); + } } - printk ("\n"); + printk("\n"); console_loglevel = orig_log_level; } spin_unlock_irqrestore(&sysrq_key_table_lock, flags); @@ -430,16 +412,17 @@ void __handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty, in * This function is called by the keyboard handler when SysRq is pressed * and any other keycode arrives. */ - void handle_sysrq(int key, struct pt_regs *pt_regs, struct tty_struct *tty) { if (!sysrq_enabled) return; __handle_sysrq(key, pt_regs, tty, 1); } +EXPORT_SYMBOL(handle_sysrq); static int __sysrq_swap_key_ops(int key, struct sysrq_key_op *insert_op_p, - struct sysrq_key_op *remove_op_p) { + struct sysrq_key_op *remove_op_p) +{ int retval; unsigned long flags; @@ -452,7 +435,6 @@ static int __sysrq_swap_key_ops(int key, struct sysrq_key_op *insert_op_p, retval = -1; } spin_unlock_irqrestore(&sysrq_key_table_lock, flags); - return retval; } @@ -460,12 +442,10 @@ int register_sysrq_key(int key, struct sysrq_key_op *op_p) { return __sysrq_swap_key_ops(key, op_p, NULL); } +EXPORT_SYMBOL(register_sysrq_key); int unregister_sysrq_key(int key, struct sysrq_key_op *op_p) { return __sysrq_swap_key_ops(key, NULL, op_p); } - -EXPORT_SYMBOL(handle_sysrq); -EXPORT_SYMBOL(register_sysrq_key); EXPORT_SYMBOL(unregister_sysrq_key); 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/tpm/tpm.h b/drivers/char/tpm/tpm.h index fd3a4beaa53..dec0224b447 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -24,6 +24,7 @@ #include <linux/fs.h> #include <linux/miscdevice.h> #include <linux/platform_device.h> +#include <linux/io.h> enum tpm_timeout { TPM_TIMEOUT = 5, /* msecs */ diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 76592ee1fb3..0bfd1b63662 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -354,7 +354,7 @@ int tty_buffer_request_room(struct tty_struct *tty, size_t size) EXPORT_SYMBOL_GPL(tty_buffer_request_room); -int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t size) +int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size) { int copied = 0; do { @@ -378,7 +378,7 @@ int tty_insert_flip_string(struct tty_struct *tty, unsigned char *chars, size_t EXPORT_SYMBOL_GPL(tty_insert_flip_string); -int tty_insert_flip_string_flags(struct tty_struct *tty, unsigned char *chars, char *flags, size_t size) +int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size) { int copied = 0; do { @@ -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) @@ -1097,8 +1094,8 @@ static void do_tty_hangup(void *data) p->signal->tty = NULL; if (!p->signal->leader) continue; - send_group_sig_info(SIGHUP, SEND_SIG_PRIV, p); - send_group_sig_info(SIGCONT, SEND_SIG_PRIV, p); + group_send_sig_info(SIGHUP, SEND_SIG_PRIV, p); + group_send_sig_info(SIGCONT, SEND_SIG_PRIV, p); if (tty->pgrp > 0) p->signal->tty_old_pgrp = tty->pgrp; } while_each_task_pid(tty->session, PIDTYPE_SID, p); @@ -2675,7 +2672,7 @@ static void __do_SAK(void *arg) tty_hangup(tty); #else struct tty_struct *tty = arg; - struct task_struct *p; + struct task_struct *g, *p; int session; int i; struct file *filp; @@ -2696,8 +2693,18 @@ static void __do_SAK(void *arg) tty->driver->flush_buffer(tty); read_lock(&tasklist_lock); + /* Kill the entire session */ do_each_task_pid(session, PIDTYPE_SID, p) { - if (p->signal->tty == tty || session > 0) { + printk(KERN_NOTICE "SAK: killed process %d" + " (%s): p->signal->session==tty->session\n", + p->pid, p->comm); + send_sig(SIGKILL, p, 1); + } while_each_task_pid(session, PIDTYPE_SID, p); + /* Now kill any processes that happen to have the + * tty open. + */ + do_each_thread(g, p) { + if (p->signal->tty == tty) { printk(KERN_NOTICE "SAK: killed process %d" " (%s): p->signal->session==tty->session\n", p->pid, p->comm); @@ -2724,7 +2731,7 @@ static void __do_SAK(void *arg) rcu_read_unlock(); } task_unlock(p); - } while_each_task_pid(session, PIDTYPE_SID, p); + } while_each_thread(g, p); read_unlock(&tasklist_lock); #endif } diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig index c0dfcf273f0..16e99db2e12 100644 --- a/drivers/char/watchdog/Kconfig +++ b/drivers/char/watchdog/Kconfig @@ -148,6 +148,16 @@ config MPCORE_WATCHDOG To compile this driver as a module, choose M here: the module will be called mpcore_wdt. +config EP93XX_WATCHDOG + tristate "EP93xx Watchdog" + depends on WATCHDOG && ARCH_EP93XX + help + Say Y here if to include support for the watchdog timer + embedded in the Cirrus Logic EP93xx family of devices. + + To compile this driver as a module, choose M here: the + module will be called ep93xx_wdt. + # X86 (i386 + ia64 + x86_64) Architecture config ACQUIRE_WDT diff --git a/drivers/char/watchdog/Makefile b/drivers/char/watchdog/Makefile index 36c0b282b8b..d6f27fde990 100644 --- a/drivers/char/watchdog/Makefile +++ b/drivers/char/watchdog/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o obj-$(CONFIG_MPCORE_WATCHDOG) += mpcore_wdt.o +obj-$(CONFIG_EP93XX_WATCHDOG) += ep93xx_wdt.o # X86 (i386 + ia64 + x86_64) Architecture obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o diff --git a/drivers/char/watchdog/ep93xx_wdt.c b/drivers/char/watchdog/ep93xx_wdt.c new file mode 100644 index 00000000000..9021dbb7829 --- /dev/null +++ b/drivers/char/watchdog/ep93xx_wdt.c @@ -0,0 +1,257 @@ +/* + * Watchdog driver for Cirrus Logic EP93xx family of devices. + * + * Copyright (c) 2004 Ray Lehtiniemi + * Copyright (c) 2006 Tower Technologies + * Based on ep93xx driver, bits from alim7101_wdt.c + * + * Authors: Ray Lehtiniemi <rayl@mail.com>, + * Alessandro Zummo <a.zummo@towertech.it> + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + * + * This watchdog fires after 250msec, which is a too short interval + * for us to rely on the user space daemon alone. So we ping the + * wdt each ~200msec and eventually stop doing it if the user space + * daemon dies. + * + * TODO: + * + * - Test last reset from watchdog status + * - Add a few missing ioctls + */ + +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/watchdog.h> +#include <linux/timer.h> + +#include <asm/hardware.h> +#include <asm/uaccess.h> + +#define WDT_VERSION "0.3" +#define PFX "ep93xx_wdt: " + +/* default timeout (secs) */ +#define WDT_TIMEOUT 30 + +static int nowayout = WATCHDOG_NOWAYOUT; +static int timeout = WDT_TIMEOUT; + +static struct timer_list timer; +static unsigned long next_heartbeat; +static unsigned long wdt_status; +static unsigned long boot_status; + +#define WDT_IN_USE 0 +#define WDT_OK_TO_CLOSE 1 + +#define EP93XX_WDT_REG(x) (EP93XX_WATCHDOG_BASE + (x)) +#define EP93XX_WDT_WATCHDOG EP93XX_WDT_REG(0x00) +#define EP93XX_WDT_WDSTATUS EP93XX_WDT_REG(0x04) + +/* reset the wdt every ~200ms */ +#define WDT_INTERVAL (HZ/5) + +static void wdt_enable(void) +{ + __raw_writew(0xaaaa, EP93XX_WDT_WATCHDOG); +} + +static void wdt_disable(void) +{ + __raw_writew(0xaa55, EP93XX_WDT_WATCHDOG); +} + +static inline void wdt_ping(void) +{ + __raw_writew(0x5555, EP93XX_WDT_WATCHDOG); +} + +static void wdt_startup(void) +{ + next_heartbeat = jiffies + (timeout * HZ); + + wdt_enable(); + mod_timer(&timer, jiffies + WDT_INTERVAL); +} + +static void wdt_shutdown(void) +{ + del_timer_sync(&timer); + wdt_disable(); +} + +static void wdt_keepalive(void) +{ + /* user land ping */ + next_heartbeat = jiffies + (timeout * HZ); +} + +static int ep93xx_wdt_open(struct inode *inode, struct file *file) +{ + if (test_and_set_bit(WDT_IN_USE, &wdt_status)) + return -EBUSY; + + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + + wdt_startup(); + + return nonseekable_open(inode, file); +} + +static ssize_t +ep93xx_wdt_write(struct file *file, const char __user *data, size_t len, + loff_t *ppos) +{ + /* Can't seek (pwrite) on this device */ + if (*ppos != file->f_pos) + return -ESPIPE; + + if (len) { + if (!nowayout) { + size_t i; + + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + + for (i = 0; i != len; i++) { + char c; + + if (get_user(c, data + i)) + return -EFAULT; + + if (c == 'V') + set_bit(WDT_OK_TO_CLOSE, &wdt_status); + else + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + } + } + wdt_keepalive(); + } + + return len; +} + +static struct watchdog_info ident = { + .options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE, + .identity = "EP93xx Watchdog", +}; + +static int +ep93xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, + unsigned long arg) +{ + int ret = -ENOIOCTLCMD; + + switch (cmd) { + case WDIOC_GETSUPPORT: + ret = copy_to_user((struct watchdog_info __user *)arg, &ident, + sizeof(ident)) ? -EFAULT : 0; + break; + + case WDIOC_GETSTATUS: + ret = put_user(0, (int __user *)arg); + break; + + case WDIOC_GETBOOTSTATUS: + ret = put_user(boot_status, (int __user *)arg); + break; + + case WDIOC_GETTIMEOUT: + /* actually, it is 0.250 seconds.... */ + ret = put_user(1, (int __user *)arg); + break; + + case WDIOC_KEEPALIVE: + wdt_keepalive(); + ret = 0; + break; + } + return ret; +} + +static int ep93xx_wdt_release(struct inode *inode, struct file *file) +{ + if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) + wdt_shutdown(); + else + printk(KERN_CRIT PFX "Device closed unexpectedly - " + "timer will not stop\n"); + + clear_bit(WDT_IN_USE, &wdt_status); + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + + return 0; +} + +static struct file_operations ep93xx_wdt_fops = { + .owner = THIS_MODULE, + .write = ep93xx_wdt_write, + .ioctl = ep93xx_wdt_ioctl, + .open = ep93xx_wdt_open, + .release = ep93xx_wdt_release, +}; + +static struct miscdevice ep93xx_wdt_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &ep93xx_wdt_fops, +}; + +static void ep93xx_timer_ping(unsigned long data) +{ + if (time_before(jiffies, next_heartbeat)) + wdt_ping(); + + /* Re-set the timer interval */ + mod_timer(&timer, jiffies + WDT_INTERVAL); +} + +static int __init ep93xx_wdt_init(void) +{ + int err; + + err = misc_register(&ep93xx_wdt_miscdev); + + boot_status = __raw_readl(EP93XX_WDT_WATCHDOG) & 0x01 ? 1 : 0; + + printk(KERN_INFO PFX "EP93XX watchdog, driver version " + WDT_VERSION "%s\n", + (__raw_readl(EP93XX_WDT_WATCHDOG) & 0x08) + ? " (nCS1 disable detected)" : ""); + + if (timeout < 1 || timeout > 3600) { + timeout = WDT_TIMEOUT; + printk(KERN_INFO PFX + "timeout value must be 1<=x<=3600, using %d\n", + timeout); + } + + setup_timer(&timer, ep93xx_timer_ping, 1); + return err; +} + +static void __exit ep93xx_wdt_exit(void) +{ + wdt_shutdown(); + misc_deregister(&ep93xx_wdt_miscdev); +} + +module_init(ep93xx_wdt_init); +module_exit(ep93xx_wdt_exit); + +module_param(nowayout, int, 0); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"); + +module_param(timeout, int, 0); +MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); + +MODULE_AUTHOR("Ray Lehtiniemi <rayl@mail.com>," + "Alessandro Zummo <a.zummo@towertech.it>"); +MODULE_DESCRIPTION("EP93xx Watchdog"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(WDT_VERSION); +MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); |