From a45b83957deabbdac9a3d908c6ca4c25f05ce1ad Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 4 Jul 2006 15:06:20 +1000 Subject: [POWERPC] Add support for briq front panel This adds the driver for the Briq front panel. This is a cleaned up version of a driver that has been floating around for some time now, initially written by Karsten Jeppesen and cleaned up by jk and myself. Signed-off-by: Jeremy Kerr Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- drivers/char/Kconfig | 14 +++ drivers/char/Makefile | 1 + drivers/char/briq_panel.c | 268 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 283 insertions(+) create mode 100644 drivers/char/briq_panel.c (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index c40e487d9f5..11de59ff422 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -495,6 +495,20 @@ config LEGACY_PTY_COUNT When not in use, each legacy PTY occupies 12 bytes on 32-bit architectures and 24 bytes on 64-bit architectures. +config BRIQ_PANEL + tristate 'Total Impact briQ front panel driver' + ---help--- + The briQ is a small footprint CHRP computer with a frontpanel VFD, a + tristate led and two switches. It is the size of a CDROM drive. + + If you have such one and want anything showing on the VFD then you + must answer Y here. + + To compile this driver as a module, choose M here: the + module will be called briq_panel. + + It's safe to say N here. + config PRINTER tristate "Parallel printer support" depends on PARPORT diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 6e0f4469d8b..7a7ee572127 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_VIOCONS) += viocons.o obj-$(CONFIG_VIOTAPE) += viotape.o obj-$(CONFIG_HVCS) += hvcs.o obj-$(CONFIG_SGI_MBCS) += mbcs.o +obj-$(CONFIG_BRIQ_PANEL) += briq_panel.o obj-$(CONFIG_PRINTER) += lp.o obj-$(CONFIG_TIPAR) += tipar.o diff --git a/drivers/char/briq_panel.c b/drivers/char/briq_panel.c new file mode 100644 index 00000000000..a0e5eac5f33 --- /dev/null +++ b/drivers/char/briq_panel.c @@ -0,0 +1,268 @@ +/* + * Drivers for the Total Impact PPC based computer "BRIQ" + * by Dr. Karsten Jeppesen + * + */ + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define BRIQ_PANEL_MINOR 156 +#define BRIQ_PANEL_VFD_IOPORT 0x0390 +#define BRIQ_PANEL_LED_IOPORT 0x0398 +#define BRIQ_PANEL_VER "1.1 (04/20/2002)" +#define BRIQ_PANEL_MSG0 "Loading Linux" + +static int vfd_is_open; +static unsigned char vfd[40]; +static int vfd_cursor; +static unsigned char ledpb, led; + +static void update_vfd(void) +{ + int i; + + /* cursor home */ + outb(0x02, BRIQ_PANEL_VFD_IOPORT); + for (i=0; i<20; i++) + outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1); + + /* cursor to next line */ + outb(0xc0, BRIQ_PANEL_VFD_IOPORT); + for (i=20; i<40; i++) + outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1); + +} + +static void set_led(char state) +{ + if (state == 'R') + led = 0x01; + else if (state == 'G') + led = 0x02; + else if (state == 'Y') + led = 0x03; + else if (state == 'X') + led = 0x00; + outb(led, BRIQ_PANEL_LED_IOPORT); +} + +static int briq_panel_open(struct inode *ino, struct file *filep) +{ + /* enforce single access */ + if (vfd_is_open) + return -EBUSY; + vfd_is_open = 1; + + return 0; +} + +static int briq_panel_release(struct inode *ino, struct file *filep) +{ + if (!vfd_is_open) + return -ENODEV; + + vfd_is_open = 0; + + return 0; +} + +static ssize_t briq_panel_read(struct file *file, char *buf, size_t count, + loff_t *ppos) +{ + unsigned short c; + unsigned char cp; + +#if 0 /* Can't seek (pread) on this device */ + if (ppos != &file->f_pos) + return -ESPIPE; +#endif + + if (!vfd_is_open) + return -ENODEV; + + c = (inb(BRIQ_PANEL_LED_IOPORT) & 0x000c) | (ledpb & 0x0003); + set_led(' '); + /* upper button released */ + if ((!(ledpb & 0x0004)) && (c & 0x0004)) { + cp = ' '; + ledpb = c; + if (copy_to_user(buf, &cp, 1)) + return -EFAULT; + return 1; + } + /* lower button released */ + else if ((!(ledpb & 0x0008)) && (c & 0x0008)) { + cp = '\r'; + ledpb = c; + if (copy_to_user(buf, &cp, 1)) + return -EFAULT; + return 1; + } else { + ledpb = c; + return 0; + } +} + +static void scroll_vfd( void ) +{ + int i; + + for (i=0; i<20; i++) { + vfd[i] = vfd[i+20]; + vfd[i+20] = ' '; + } + vfd_cursor = 20; +} + +static ssize_t briq_panel_write(struct file *file, const char *buf, size_t len, + loff_t *ppos) +{ + size_t indx = len; + int i, esc = 0; + +#if 0 /* Can't seek (pwrite) on this device */ + if (ppos != &file->f_pos) + return -ESPIPE; +#endif + + if (!vfd_is_open) + return -EBUSY; + + for (;;) { + if (!indx) + break; + if (esc) { + set_led(*buf); + esc = 0; + } else if (*buf == 27) { + esc = 1; + } else if (*buf == 12) { + /* do a form feed */ + for (i=0; i<40; i++) + vfd[i] = ' '; + vfd_cursor = 0; + } else if (*buf == 10) { + if (vfd_cursor < 20) + vfd_cursor = 20; + else if (vfd_cursor < 40) + vfd_cursor = 40; + else if (vfd_cursor < 60) + vfd_cursor = 60; + if (vfd_cursor > 59) + scroll_vfd(); + } else { + /* just a character */ + if (vfd_cursor > 39) + scroll_vfd(); + vfd[vfd_cursor++] = *buf; + } + indx--; + buf++; + } + update_vfd(); + + return len; +} + +static struct file_operations briq_panel_fops = { + .owner = THIS_MODULE, + .read = briq_panel_read, + .write = briq_panel_write, + .open = briq_panel_open, + .release = briq_panel_release, +}; + +static struct miscdevice briq_panel_miscdev = { + BRIQ_PANEL_MINOR, + "briq_panel", + &briq_panel_fops +}; + +static int __init briq_panel_init(void) +{ + struct device_node *root = find_path_device("/"); + char *machine; + int i; + + machine = get_property(root, "model", NULL); + if (!machine || strncmp(machine, "TotalImpact,BRIQ-1", 18) != 0) + return -ENODEV; + + printk(KERN_INFO + "briq_panel: v%s Dr. Karsten Jeppesen (kj@totalimpact.com)\n", + BRIQ_PANEL_VER); + + if (!request_region(BRIQ_PANEL_VFD_IOPORT, 4, "BRIQ Front Panel")) + return -EBUSY; + + if (!request_region(BRIQ_PANEL_LED_IOPORT, 2, "BRIQ Front Panel")) { + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + return -EBUSY; + } + ledpb = inb(BRIQ_PANEL_LED_IOPORT) & 0x000c; + + if (misc_register(&briq_panel_miscdev) < 0) { + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + release_region(BRIQ_PANEL_LED_IOPORT, 2); + return -EBUSY; + } + + outb(0x38, BRIQ_PANEL_VFD_IOPORT); /* Function set */ + outb(0x01, BRIQ_PANEL_VFD_IOPORT); /* Clear display */ + outb(0x0c, BRIQ_PANEL_VFD_IOPORT); /* Display on */ + outb(0x06, BRIQ_PANEL_VFD_IOPORT); /* Entry normal */ + for (i=0; i<40; i++) + vfd[i]=' '; +#ifndef MODULE + vfd[0] = 'L'; + vfd[1] = 'o'; + vfd[2] = 'a'; + vfd[3] = 'd'; + vfd[4] = 'i'; + vfd[5] = 'n'; + vfd[6] = 'g'; + vfd[7] = ' '; + vfd[8] = '.'; + vfd[9] = '.'; + vfd[10] = '.'; +#endif /* !MODULE */ + + update_vfd(); + + return 0; +} + +static void __exit briq_panel_exit(void) +{ + misc_deregister(&briq_panel_miscdev); + release_region(BRIQ_PANEL_VFD_IOPORT, 4); + release_region(BRIQ_PANEL_LED_IOPORT, 2); +} + +module_init(briq_panel_init); +module_exit(briq_panel_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Karsten Jeppesen "); +MODULE_DESCRIPTION("Driver for the Total Impact briQ front panel"); -- cgit v1.2.3 From 8bff05b052db7a4cfaaf0eee7f8145600548e9c9 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 13 Jul 2006 18:51:22 +1000 Subject: [POWERPC] iseries: A new iSeries console This driver uses the hvc_console.c infrastructure that is used by the pSeries virtual and RTAS consoles. This will allow us to make viocons.c obsolete and is another step along the way to a combined kernel (as viocons could not coexist with CONFIG_VT). Signed-off-by: Stephen Rothwell --- drivers/char/Kconfig | 7 + drivers/char/Makefile | 1 + drivers/char/hvc_iseries.c | 593 +++++++++++++++++++++++++++++++++++++++++++++ drivers/char/viocons.c | 31 +-- 4 files changed, 602 insertions(+), 30 deletions(-) create mode 100644 drivers/char/hvc_iseries.c (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 11de59ff422..a7ef542afbc 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -610,6 +610,13 @@ config HVC_CONSOLE console. This driver allows each pSeries partition to have a console which is accessed via the HMC. +config HVC_ISERIES + bool "iSeries Hypervisor Virtual Console support" + depends on PPC_ISERIES && !VIOCONS + select HVC_DRIVER + help + iSeries machines support a hypervisor virtual console. + config HVC_RTAS bool "IBM RTAS Console support" depends on PPC_RTAS diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 7a7ee572127..8c6dfc62152 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o obj-$(CONFIG_SX) += sx.o generic_serial.o obj-$(CONFIG_RIO) += rio/ generic_serial.o obj-$(CONFIG_HVC_CONSOLE) += hvc_vio.o hvsi.o +obj-$(CONFIG_HVC_ISERIES) += hvc_iseries.o obj-$(CONFIG_HVC_RTAS) += hvc_rtas.o obj-$(CONFIG_HVC_DRIVER) += hvc_console.o obj-$(CONFIG_RAW_DRIVER) += raw.o diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c new file mode 100644 index 00000000000..256afc8e583 --- /dev/null +++ b/drivers/char/hvc_iseries.c @@ -0,0 +1,593 @@ +/* + * iSeries vio driver interface to hvc_console.c + * + * This code is based heavily on hvc_vio.c and viocons.c + * + * Copyright (C) 2006 Stephen Rothwell, IBM Corporation + * + * 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 +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "hvc_console.h" + +#define VTTY_PORTS 10 + +static DEFINE_SPINLOCK(consolelock); +static DEFINE_SPINLOCK(consoleloglock); + +static const char hvc_driver_name[] = "hvc_console"; + +#define IN_BUF_SIZE 200 + +/* + * Our port information. + */ +static struct port_info { + HvLpIndex lp; + u64 seq; /* sequence number of last HV send */ + u64 ack; /* last ack from HV */ + struct hvc_struct *hp; + int in_start; + int in_end; + unsigned char in_buf[IN_BUF_SIZE]; +} port_info[VTTY_PORTS] = { + [ 0 ... VTTY_PORTS - 1 ] = { + .lp = HvLpIndexInvalid + } +}; + +#define viochar_is_console(pi) ((pi) == &port_info[0]) + +static struct vio_device_id hvc_driver_table[] __devinitdata = { + {"serial", "IBM,iSeries-vty"}, + { "", "" } +}; +MODULE_DEVICE_TABLE(vio, hvc_driver_table); + +static void hvlog(char *fmt, ...) +{ + int i; + unsigned long flags; + va_list args; + static char buf[256]; + + spin_lock_irqsave(&consoleloglock, flags); + va_start(args, fmt); + i = vscnprintf(buf, sizeof(buf) - 1, fmt, args); + va_end(args); + buf[i++] = '\r'; + HvCall_writeLogBuffer(buf, i); + spin_unlock_irqrestore(&consoleloglock, flags); +} + +/* + * Initialize the common fields in a charLpEvent + */ +static void init_data_event(struct viocharlpevent *viochar, HvLpIndex lp) +{ + struct HvLpEvent *hev = &viochar->event; + + memset(viochar, 0, sizeof(struct viocharlpevent)); + + hev->flags = HV_LP_EVENT_VALID | HV_LP_EVENT_DEFERRED_ACK | + HV_LP_EVENT_INT; + hev->xType = HvLpEvent_Type_VirtualIo; + hev->xSubtype = viomajorsubtype_chario | viochardata; + hev->xSourceLp = HvLpConfig_getLpIndex(); + hev->xTargetLp = lp; + hev->xSizeMinus1 = sizeof(struct viocharlpevent); + hev->xSourceInstanceId = viopath_sourceinst(lp); + hev->xTargetInstanceId = viopath_targetinst(lp); +} + +static int get_chars(uint32_t vtermno, char *buf, int count) +{ + struct port_info *pi; + int n = 0; + unsigned long flags; + + if (vtermno >= VTTY_PORTS) + return -EINVAL; + if (count == 0) + return 0; + + pi = &port_info[vtermno]; + spin_lock_irqsave(&consolelock, flags); + + if (pi->in_end == 0) + goto done; + + n = pi->in_end - pi->in_start; + if (n > count) + n = count; + memcpy(buf, &pi->in_buf[pi->in_start], n); + pi->in_start += n; + if (pi->in_start == pi->in_end) { + pi->in_start = 0; + pi->in_end = 0; + } +done: + spin_unlock_irqrestore(&consolelock, flags); + return n; +} + +static int put_chars(uint32_t vtermno, const char *buf, int count) +{ + struct viocharlpevent *viochar; + struct port_info *pi; + HvLpEvent_Rc hvrc; + unsigned long flags; + int sent = 0; + + if (vtermno >= VTTY_PORTS) + return -EINVAL; + + pi = &port_info[vtermno]; + + spin_lock_irqsave(&consolelock, flags); + + if (viochar_is_console(pi) && !viopath_isactive(pi->lp)) { + spin_lock_irqsave(&consoleloglock, flags); + HvCall_writeLogBuffer(buf, count); + spin_unlock_irqrestore(&consoleloglock, flags); + sent = count; + goto done; + } + + viochar = vio_get_event_buffer(viomajorsubtype_chario); + if (viochar == NULL) { + hvlog("\n\rviocons: Can't get viochar buffer."); + goto done; + } + + while ((count > 0) && ((pi->seq - pi->ack) < VIOCHAR_WINDOW)) { + int len; + + len = (count > VIOCHAR_MAX_DATA) ? VIOCHAR_MAX_DATA : count; + + if (viochar_is_console(pi)) { + spin_lock_irqsave(&consoleloglock, flags); + HvCall_writeLogBuffer(buf, len); + spin_unlock_irqrestore(&consoleloglock, flags); + } + + init_data_event(viochar, pi->lp); + + viochar->len = len; + viochar->event.xCorrelationToken = pi->seq++; + viochar->event.xSizeMinus1 = + offsetof(struct viocharlpevent, data) + len; + + memcpy(viochar->data, buf, len); + + hvrc = HvCallEvent_signalLpEvent(&viochar->event); + if (hvrc) + hvlog("\n\rerror sending event! return code %d\n\r", + (int)hvrc); + sent += len; + count -= len; + buf += len; + } + + vio_free_event_buffer(viomajorsubtype_chario, viochar); +done: + spin_unlock_irqrestore(&consolelock, flags); + return sent; +} + +static struct hv_ops hvc_get_put_ops = { + .get_chars = get_chars, + .put_chars = put_chars, +}; + +static int __devinit hvc_vio_probe(struct vio_dev *vdev, + const struct vio_device_id *id) +{ + struct hvc_struct *hp; + struct port_info *pi; + + /* probed with invalid parameters. */ + if (!vdev || !id) + return -EPERM; + + if (vdev->unit_address >= VTTY_PORTS) + return -ENODEV; + + pi = &port_info[vdev->unit_address]; + + hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops); + if (IS_ERR(hp)) + return PTR_ERR(hp); + pi->hp = hp; + dev_set_drvdata(&vdev->dev, pi); + + return 0; +} + +static int __devexit hvc_vio_remove(struct vio_dev *vdev) +{ + struct port_info *pi = dev_get_drvdata(&vdev->dev); + struct hvc_struct *hp = pi->hp; + + return hvc_remove(hp); +} + +static struct vio_driver hvc_vio_driver = { + .id_table = hvc_driver_table, + .probe = hvc_vio_probe, + .remove = hvc_vio_remove, + .driver = { + .name = hvc_driver_name, + .owner = THIS_MODULE, + } +}; + +static void hvc_open_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + u8 port = cevent->virtual_device; + struct port_info *pi; + int reject = 0; + + if (hvlpevent_is_ack(event)) { + if (port >= VTTY_PORTS) + return; + + spin_lock_irqsave(&consolelock, flags); + + pi = &port_info[port]; + if (event->xRc == HvLpEvent_Rc_Good) { + pi->seq = pi->ack = 0; + /* + * This line allows connections from the primary + * partition but once one is connected from the + * primary partition nothing short of a reboot + * of linux will allow access from the hosting + * partition again without a required iSeries fix. + */ + pi->lp = event->xTargetLp; + } + + spin_unlock_irqrestore(&consolelock, flags); + if (event->xRc != HvLpEvent_Rc_Good) + printk(KERN_WARNING + "hvc: handle_open_event: event->xRc == (%d).\n", + event->xRc); + + if (event->xCorrelationToken != 0) { + atomic_t *aptr= (atomic_t *)event->xCorrelationToken; + atomic_set(aptr, 1); + } else + printk(KERN_WARNING + "hvc: weird...got open ack without atomic\n"); + return; + } + + /* This had better require an ack, otherwise complain */ + if (!hvlpevent_need_ack(event)) { + printk(KERN_WARNING "hvc: viocharopen without ack bit!\n"); + return; + } + + spin_lock_irqsave(&consolelock, flags); + + /* Make sure this is a good virtual tty */ + if (port >= VTTY_PORTS) { + event->xRc = HvLpEvent_Rc_SubtypeError; + cevent->subtype_result_code = viorc_openRejected; + /* + * Flag state here since we can't printk while holding + * the consolelock spinlock. + */ + reject = 1; + } else { + pi = &port_info[port]; + if ((pi->lp != HvLpIndexInvalid) && + (pi->lp != event->xSourceLp)) { + /* + * If this is tty is already connected to a different + * partition, fail. + */ + event->xRc = HvLpEvent_Rc_SubtypeError; + cevent->subtype_result_code = viorc_openRejected; + reject = 2; + } else { + pi->lp = event->xSourceLp; + event->xRc = HvLpEvent_Rc_Good; + cevent->subtype_result_code = viorc_good; + pi->seq = pi->ack = 0; + } + } + + spin_unlock_irqrestore(&consolelock, flags); + + if (reject == 1) + printk(KERN_WARNING "hvc: open rejected: bad virtual tty.\n"); + else if (reject == 2) + printk(KERN_WARNING "hvc: open rejected: console in exclusive " + "use by another partition.\n"); + + /* Return the acknowledgement */ + HvCallEvent_ackLpEvent(event); +} + +/* + * Handle a close charLpEvent. This should ONLY be an Interrupt because the + * virtual console should never actually issue a close event to the hypervisor + * because the virtual console never goes away. A close event coming from the + * hypervisor simply means that there are no client consoles connected to the + * virtual console. + */ +static void hvc_close_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + u8 port = cevent->virtual_device; + + if (!hvlpevent_is_int(event)) { + printk(KERN_WARNING + "hvc: got unexpected close acknowlegement\n"); + return; + } + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING + "hvc: close message from invalid virtual device.\n"); + return; + } + + /* For closes, just mark the console partition invalid */ + spin_lock_irqsave(&consolelock, flags); + + if (port_info[port].lp == event->xSourceLp) + port_info[port].lp = HvLpIndexInvalid; + + spin_unlock_irqrestore(&consolelock, flags); +} + +static void hvc_data_event(struct HvLpEvent *event) +{ + unsigned long flags; + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + struct port_info *pi; + int n; + u8 port = cevent->virtual_device; + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING "hvc: data on invalid virtual device %d\n", + port); + return; + } + if (cevent->len == 0) + return; + + /* + * Change 05/01/2003 - Ryan Arnold: If a partition other than + * the current exclusive partition tries to send us data + * events then just drop them on the floor because we don't + * want his stinking data. He isn't authorized to receive + * data because he wasn't the first one to get the console, + * therefore he shouldn't be allowed to send data either. + * This will work without an iSeries fix. + */ + pi = &port_info[port]; + if (pi->lp != event->xSourceLp) + return; + + spin_lock_irqsave(&consolelock, flags); + + n = IN_BUF_SIZE - pi->in_end; + if (n > cevent->len) + n = cevent->len; + if (n > 0) { + memcpy(&pi->in_buf[pi->in_end], cevent->data, n); + pi->in_end += n; + } + spin_unlock_irqrestore(&consolelock, flags); + if (n == 0) + printk(KERN_WARNING "hvc: input buffer overflow\n"); +} + +static void hvc_ack_event(struct HvLpEvent *event) +{ + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + unsigned long flags; + u8 port = cevent->virtual_device; + + if (port >= VTTY_PORTS) { + printk(KERN_WARNING "hvc: data on invalid virtual device\n"); + return; + } + + spin_lock_irqsave(&consolelock, flags); + port_info[port].ack = event->xCorrelationToken; + spin_unlock_irqrestore(&consolelock, flags); +} + +static void hvc_config_event(struct HvLpEvent *event) +{ + struct viocharlpevent *cevent = (struct viocharlpevent *)event; + + if (cevent->data[0] == 0x01) + printk(KERN_INFO "hvc: window resized to %d: %d: %d: %d\n", + cevent->data[1], cevent->data[2], + cevent->data[3], cevent->data[4]); + else + printk(KERN_WARNING "hvc: unknown config event\n"); +} + +static void hvc_handle_event(struct HvLpEvent *event) +{ + int charminor; + + if (event == NULL) + return; + + charminor = event->xSubtype & VIOMINOR_SUBTYPE_MASK; + switch (charminor) { + case viocharopen: + hvc_open_event(event); + break; + case viocharclose: + hvc_close_event(event); + break; + case viochardata: + hvc_data_event(event); + break; + case viocharack: + hvc_ack_event(event); + break; + case viocharconfig: + hvc_config_event(event); + break; + default: + if (hvlpevent_is_int(event) && hvlpevent_need_ack(event)) { + event->xRc = HvLpEvent_Rc_InvalidSubtype; + HvCallEvent_ackLpEvent(event); + } + } +} + +static int send_open(HvLpIndex remoteLp, void *sem) +{ + return HvCallEvent_signalLpEventFast(remoteLp, + HvLpEvent_Type_VirtualIo, + viomajorsubtype_chario | viocharopen, + HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck, + viopath_sourceinst(remoteLp), + viopath_targetinst(remoteLp), + (u64)(unsigned long)sem, VIOVERSION << 16, + 0, 0, 0, 0); +} + +static int hvc_vio_init(void) +{ + atomic_t wait_flag; + int rc; + + /* +2 for fudge */ + rc = viopath_open(HvLpConfig_getPrimaryLpIndex(), + viomajorsubtype_chario, VIOCHAR_WINDOW + 2); + if (rc) + printk(KERN_WARNING "hvc: error opening to primary %d\n", rc); + + if (viopath_hostLp == HvLpIndexInvalid) + vio_set_hostlp(); + + /* + * And if the primary is not the same as the hosting LP, open to the + * hosting lp + */ + if ((viopath_hostLp != HvLpIndexInvalid) && + (viopath_hostLp != HvLpConfig_getPrimaryLpIndex())) { + printk(KERN_INFO "hvc: open path to hosting (%d)\n", + viopath_hostLp); + rc = viopath_open(viopath_hostLp, viomajorsubtype_chario, + VIOCHAR_WINDOW + 2); /* +2 for fudge */ + if (rc) + printk(KERN_WARNING + "error opening to partition %d: %d\n", + viopath_hostLp, rc); + } + + if (vio_setHandler(viomajorsubtype_chario, hvc_handle_event) < 0) + printk(KERN_WARNING + "hvc: error seting handler for console events!\n"); + + /* + * First, try to open the console to the hosting lp. + * Wait on a semaphore for the response. + */ + atomic_set(&wait_flag, 0); + if ((viopath_isactive(viopath_hostLp)) && + (send_open(viopath_hostLp, &wait_flag) == 0)) { + printk(KERN_INFO "hvc: hosting partition %d\n", viopath_hostLp); + while (atomic_read(&wait_flag) == 0) + mb(); + atomic_set(&wait_flag, 0); + } + + /* + * If we don't have an active console, try the primary + */ + if ((!viopath_isactive(port_info[0].lp)) && + (viopath_isactive(HvLpConfig_getPrimaryLpIndex())) && + (send_open(HvLpConfig_getPrimaryLpIndex(), &wait_flag) == 0)) { + printk(KERN_INFO "hvc: opening console to primary partition\n"); + while (atomic_read(&wait_flag) == 0) + mb(); + } + + /* Register as a vio device to receive callbacks */ + rc = vio_register_driver(&hvc_vio_driver); + + return rc; +} +module_init(hvc_vio_init); /* after drivers/char/hvc_console.c */ + +static void hvc_vio_exit(void) +{ + vio_unregister_driver(&hvc_vio_driver); +} +module_exit(hvc_vio_exit); + +/* the device tree order defines our numbering */ +static int hvc_find_vtys(void) +{ + struct device_node *vty; + int num_found = 0; + + for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL; + vty = of_find_node_by_name(vty, "vty")) { + uint32_t *vtermno; + + /* We have statically defined space for only a certain number + * of console adapters. + */ + if ((num_found >= MAX_NR_HVC_CONSOLES) || + (num_found >= VTTY_PORTS)) + break; + + vtermno = (uint32_t *)get_property(vty, "reg", NULL); + if (!vtermno) + continue; + + if (!device_is_compatible(vty, "IBM,iSeries-vty")) + continue; + + if (num_found == 0) + add_preferred_console("hvc", 0, NULL); + hvc_instantiate(*vtermno, num_found, &hvc_get_put_ops); + ++num_found; + } + + return num_found; +} +console_initcall(hvc_find_vtys); diff --git a/drivers/char/viocons.c b/drivers/char/viocons.c index 766f7864c6c..f3efeaf2826 100644 --- a/drivers/char/viocons.c +++ b/drivers/char/viocons.c @@ -43,7 +43,6 @@ #include #include - #include #include #include @@ -67,35 +66,6 @@ static int vio_sysrq_pressed; extern int sysrq_enabled; #endif -/* - * The structure of the events that flow between us and OS/400. You can't - * mess with this unless the OS/400 side changes too - */ -struct viocharlpevent { - struct HvLpEvent event; - u32 reserved; - u16 version; - u16 subtype_result_code; - u8 virtual_device; - u8 len; - u8 data[VIOCHAR_MAX_DATA]; -}; - -#define VIOCHAR_WINDOW 10 -#define VIOCHAR_HIGHWATERMARK 3 - -enum viocharsubtype { - viocharopen = 0x0001, - viocharclose = 0x0002, - viochardata = 0x0003, - viocharack = 0x0004, - viocharconfig = 0x0005 -}; - -enum viochar_rc { - viochar_rc_ebusy = 1 -}; - #define VIOCHAR_NUM_BUF 16 /* @@ -1183,6 +1153,7 @@ static int __init viocons_init(void) port_info[i].magic = VIOTTY_MAGIC; } HvCall_setLogBufferFormatAndCodepage(HvCall_LogBuffer_ASCII, 437); + add_preferred_console("viocons", 0, NULL); register_console(&viocons_early); return 0; } -- cgit v1.2.3 From 4e9e95a3554e98e7383a3591283ffcd850c9ef48 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 13 Jul 2006 18:53:32 +1000 Subject: [POWERPC] Make the hvc_console output buffer size settable So the iSeries console will be faster since it can send up to 200 bytes at a time to the Hypervisor. This only affects the tty part of the console, the console writes are still in 16 byte lots. Signed-off-by: Stephen Rothwell --- drivers/char/hvc_console.c | 14 +++++++++----- drivers/char/hvc_console.h | 2 +- drivers/char/hvc_iseries.c | 3 ++- drivers/char/hvc_rtas.c | 2 +- drivers/char/hvc_vio.c | 3 ++- 5 files changed, 15 insertions(+), 9 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index ca2f538e549..dbee8bed053 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -80,7 +80,8 @@ struct hvc_struct { struct tty_struct *tty; unsigned int count; int do_wakeup; - char outbuf[N_OUTBUF] __ALIGNED__; + char *outbuf; + int outbuf_size; int n_outbuf; uint32_t vtermno; struct hv_ops *ops; @@ -505,7 +506,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count if (hp->n_outbuf > 0) hvc_push(hp); - while (count > 0 && (rsize = N_OUTBUF - hp->n_outbuf) > 0) { + while (count > 0 && (rsize = hp->outbuf_size - hp->n_outbuf) > 0) { if (rsize > count) rsize = count; memcpy(hp->outbuf + hp->n_outbuf, buf, rsize); @@ -538,7 +539,7 @@ static int hvc_write_room(struct tty_struct *tty) if (!hp) return -1; - return N_OUTBUF - hp->n_outbuf; + return hp->outbuf_size - hp->n_outbuf; } static int hvc_chars_in_buffer(struct tty_struct *tty) @@ -728,12 +729,13 @@ static struct kobj_type hvc_kobj_type = { }; struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq, - struct hv_ops *ops) + struct hv_ops *ops, int outbuf_size) { struct hvc_struct *hp; int i; - hp = kmalloc(sizeof(*hp), GFP_KERNEL); + hp = kmalloc(ALIGN(sizeof(*hp), sizeof(long)) + outbuf_size, + GFP_KERNEL); if (!hp) return ERR_PTR(-ENOMEM); @@ -742,6 +744,8 @@ struct hvc_struct __devinit *hvc_alloc(uint32_t vtermno, int irq, hp->vtermno = vtermno; hp->irq = irq; hp->ops = ops; + hp->outbuf_size = outbuf_size; + hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))]; kobject_init(&hp->kobj); hp->kobj.ktype = &hvc_kobj_type; diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h index 96b7401319c..8c59818050e 100644 --- a/drivers/char/hvc_console.h +++ b/drivers/char/hvc_console.h @@ -56,7 +56,7 @@ 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); + struct hv_ops *ops, int outbuf_size); /* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */ extern int __devexit hvc_remove(struct hvc_struct *hp); diff --git a/drivers/char/hvc_iseries.c b/drivers/char/hvc_iseries.c index 256afc8e583..4747729459c 100644 --- a/drivers/char/hvc_iseries.c +++ b/drivers/char/hvc_iseries.c @@ -221,7 +221,8 @@ static int __devinit hvc_vio_probe(struct vio_dev *vdev, pi = &port_info[vdev->unit_address]; - hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops); + hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops, + VIOCHAR_MAX_DATA); if (IS_ERR(hp)) return PTR_ERR(hp); pi->hp = hp; diff --git a/drivers/char/hvc_rtas.c b/drivers/char/hvc_rtas.c index 57106e02fd2..4b97eaf1860 100644 --- a/drivers/char/hvc_rtas.c +++ b/drivers/char/hvc_rtas.c @@ -94,7 +94,7 @@ static int hvc_rtas_init(void) /* 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); + hp = hvc_alloc(hvc_rtas_cookie, NO_IRQ, &hvc_rtas_get_put_ops, 16); if (IS_ERR(hp)) return PTR_ERR(hp); diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c index 9add81ceb44..651e5d25f58 100644 --- a/drivers/char/hvc_vio.c +++ b/drivers/char/hvc_vio.c @@ -90,7 +90,8 @@ static int __devinit hvc_vio_probe(struct vio_dev *vdev, if (!vdev || !id) return -EPERM; - hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops); + hp = hvc_alloc(vdev->unit_address, vdev->irq, &hvc_get_put_ops, + MAX_VIO_PUT_CHARS); if (IS_ERR(hp)) return PTR_ERR(hp); dev_set_drvdata(&vdev->dev, hp); -- cgit v1.2.3 From 380ed24b1b81a188c5b716286143157a27935aab Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 13 Jul 2006 18:56:00 +1000 Subject: [POWERPC] iseries: Small viotape cleanup allowed by devfs removal Signed-off-by: Stephen Rothwell --- drivers/char/viotape.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index b72b2049aaa..73c78bf75d7 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -940,7 +940,6 @@ static void vioHandleTapeEvent(struct HvLpEvent *event) static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) { - char tapename[32]; int i = vdev->unit_address; int j; @@ -956,10 +955,9 @@ static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) "iseries!vt%d", i); class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), NULL, "iseries!nvt%d", i); - sprintf(tapename, "iseries/vt%d", i); - printk(VIOTAPE_KERN_INFO "tape %s is iSeries " + printk(VIOTAPE_KERN_INFO "tape iseries/vt%d is iSeries " "resource %10.10s type %4.4s, model %3.3s\n", - tapename, viotape_unitinfo[i].rsrcname, + i, viotape_unitinfo[i].rsrcname, viotape_unitinfo[i].type, viotape_unitinfo[i].model); return 0; } -- cgit v1.2.3 From 4288b92b9644fdb4c6168273873fe08f32090d7a Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sat, 8 Jul 2006 22:38:56 -0700 Subject: [POWERPC] briq_panel Kconfig fix drivers/char/briq_panel.c:28:22: error: asm/prom.h: No such file or directory Cc: Jeremy Kerr Acked-by: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras --- drivers/char/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index a7ef542afbc..320ad7ba11d 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -497,6 +497,7 @@ config LEGACY_PTY_COUNT config BRIQ_PANEL tristate 'Total Impact briQ front panel driver' + depends on PPC ---help--- The briQ is a small footprint CHRP computer with a frontpanel VFD, a tristate led and two switches. It is the size of a CDROM drive. -- cgit v1.2.3 From 954a46e2d5aec6f59976ddeb1d232b486e59b54a Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Wed, 12 Jul 2006 15:39:43 +1000 Subject: [POWERPC] pseries: Constify & voidify get_property() Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. pseries platform changes. Built for pseries_defconfig Signed-off-by: Jeremy Kerr Signed-off-by: Paul Mackerras --- drivers/char/hvc_vio.c | 4 ++-- drivers/char/hvsi.c | 7 +++---- 2 files changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/hvc_vio.c b/drivers/char/hvc_vio.c index 651e5d25f58..cc95941148f 100644 --- a/drivers/char/hvc_vio.c +++ b/drivers/char/hvc_vio.c @@ -141,7 +141,7 @@ static int hvc_find_vtys(void) for (vty = of_find_node_by_name(NULL, "vty"); vty != NULL; vty = of_find_node_by_name(vty, "vty")) { - uint32_t *vtermno; + const uint32_t *vtermno; /* We have statically defined space for only a certain number * of console adapters. @@ -149,7 +149,7 @@ static int hvc_find_vtys(void) if (num_found >= MAX_NR_HVC_CONSOLES) break; - vtermno = (uint32_t *)get_property(vty, "reg", NULL); + vtermno = get_property(vty, "reg", NULL); if (!vtermno) continue; diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index 56612a2dca6..542de0e51f3 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -1276,11 +1276,10 @@ static int __init hvsi_console_init(void) vty != NULL; vty = of_find_compatible_node(vty, "serial", "hvterm-protocol")) { struct hvsi_struct *hp; - uint32_t *vtermno; - uint32_t *irq; + const uint32_t *vtermno, *irq; - vtermno = (uint32_t *)get_property(vty, "reg", NULL); - irq = (uint32_t *)get_property(vty, "interrupts", NULL); + vtermno = get_property(vty, "reg", NULL); + irq = get_property(vty, "interrupts", NULL); if (!vtermno || !irq) continue; -- cgit v1.2.3 From b04e3dd4ab4c7763a4ca8f751caaf69ce8dabbba Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Wed, 12 Jul 2006 15:40:40 +1000 Subject: [POWERPC] video & agp: Constify & voidify get_property() Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. powerpc-specific video & agp driver changes. Signed-off-by: Jeremy Kerr Signed-off-by: Paul Mackerras --- drivers/char/agp/uninorth-agp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 1de1b12043b..91b71e750ee 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -601,8 +601,8 @@ static int __devinit agp_uninorth_probe(struct pci_dev *pdev, uninorth_node = of_find_node_by_name(NULL, "u3"); } if (uninorth_node) { - int *revprop = (int *) - get_property(uninorth_node, "device-rev", NULL); + const int *revprop = get_property(uninorth_node, + "device-rev", NULL); if (revprop != NULL) uninorth_rev = *revprop & 0x3f; of_node_put(uninorth_node); -- cgit v1.2.3 From 5c339e96a391476ebb7cc63d913445c8cee092ff Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Wed, 12 Jul 2006 15:41:30 +1000 Subject: [POWERPC] tmp_atmel: Constify & voidify get_property() Now that get_property() returns a void *, there's no need to cast its return value. Also, treat the return value as const, so we can constify get_property later. tpm_atmel changes Signed-off-by: Jeremy Kerr Signed-off-by: Paul Mackerras --- drivers/char/tpm/tpm_atmel.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/tpm/tpm_atmel.h b/drivers/char/tpm/tpm_atmel.h index 2e68eeb8a2c..aefd683c60b 100644 --- a/drivers/char/tpm/tpm_atmel.h +++ b/drivers/char/tpm/tpm_atmel.h @@ -37,7 +37,7 @@ static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size) { struct device_node *dn; unsigned long address, size; - unsigned int *reg; + const unsigned int *reg; int reglen; int naddrc; int nsizec; @@ -52,7 +52,7 @@ static void __iomem * atmel_get_base_addr(unsigned long *base, int *region_size) return NULL; } - reg = (unsigned int *) get_property(dn, "reg", ®len); + reg = get_property(dn, "reg", ®len); naddrc = prom_n_addr_cells(dn); nsizec = prom_n_size_cells(dn); -- cgit v1.2.3 From 2818c5dec5e28d65d52afbb7695bbbafe6377ee5 Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Fri, 25 Aug 2006 15:08:21 +1000 Subject: [POWERPC] Only offer CONFIG_BRIQ_PANEL if CONFIG_PPC_CHRP is enabled since only the briQ has a briQ front panel, and the briQ is a CHRP and is only supported if CONFIG_PPC_CHRP is set. Signed-off-by: Paul Mackerras --- drivers/char/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/char') diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 320ad7ba11d..52ea94b891f 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -497,7 +497,7 @@ config LEGACY_PTY_COUNT config BRIQ_PANEL tristate 'Total Impact briQ front panel driver' - depends on PPC + depends on PPC_CHRP ---help--- The briQ is a small footprint CHRP computer with a frontpanel VFD, a tristate led and two switches. It is the size of a CDROM drive. -- cgit v1.2.3 From 87fd7724d4022913ae8dbee3ed55cd04f2c316a6 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Thu, 7 Sep 2006 15:18:08 -0500 Subject: [POWERPC] Quiet hvc_console console output on failed opens No other tty driver will print on the console when the open of it fails. On systems that happen to be configured for both ttyS0 and hvc0 console, this will keep flooding the console output. This is most likely to happen with systems booted between with and without hypervisor from the same filesystem. Let's just remove it. When it's really needed (i.e. when the open fails and someone is trying to debug it), noone will see the output anyway. And init will report the opens failing in due time through the syslog. Signed-off-by: Olof Johansson Acked-by: Ryan S. Arnold Signed-off-by: Paul Mackerras --- drivers/char/hvc_console.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/char') diff --git a/drivers/char/hvc_console.c b/drivers/char/hvc_console.c index dbee8bed053..1d1bd34b7f1 100644 --- a/drivers/char/hvc_console.c +++ b/drivers/char/hvc_console.c @@ -320,10 +320,8 @@ static int hvc_open(struct tty_struct *tty, struct file * filp) struct kobject *kobjp; /* Auto increments kobject reference if found. */ - if (!(hp = hvc_get_by_index(tty->index))) { - printk(KERN_WARNING "hvc_console: tty open failed, no vty associated with tty.\n"); + if (!(hp = hvc_get_by_index(tty->index))) return -ENODEV; - } spin_lock_irqsave(&hp->lock, flags); /* Check and then increment for fast path open. */ -- cgit v1.2.3