http://linux-watchdog.bkbits.net/linux-2.6-watchdog-mm wim@iguana.be|ChangeSet|20050324082841|57346 wim # This is a BitKeeper generated diff -Nru style patch. # # ChangeSet # 2005/03/24 09:15:27+01:00 wim@iguana.be # [WATCHDOG] wdt285.c-printk-patch # # printk() calls should include appropriate KERN_* constant. # # Signed-off-by: Christophe Lucas # Signed-off-by: Domen Puncer # Signed-off-by: Wim Van Sebroeck # # drivers/char/watchdog/wdt285.c # 2005/03/24 09:15:18+01:00 wim@iguana.be +2 -2 # printk() calls should include appropriate KERN_* constant. # # Signed-off-by: Christophe Lucas # Signed-off-by: Domen Puncer # Signed-off-by: Wim Van Sebroeck # # ChangeSet # 2005/03/15 22:39:52+01:00 wim@iguana.be # [WATCHDOG] Makefile-probe_order-patch # # Re-arrange Makefile according to what we want to probe first. # # drivers/char/watchdog/Makefile # 2005/03/15 22:39:43+01:00 wim@iguana.be +47 -24 # Re-arrange Makefile according to what we want to probe first. # # ChangeSet # 2005/03/15 22:24:14+01:00 ben-linux@fluff.org # [WATCHDOG] s3c2410 watchdog - replace reboot notifier # # Patch from Dimitry Andric # # Change to using platfrom driver's .shutdown method instead # of an reboot notifier # # Signed-off-by: Dimitry Andric # Signed-off-by: Ben Dooks # # drivers/char/watchdog/s3c2410_wdt.c # 2005/03/15 22:22:01+01:00 ben-linux@fluff.org +7 -29 # Change to platfrom driver's .shutdown method instead of reboot notifier # # ChangeSet # 2005/03/15 22:18:38+01:00 ben-linux@fluff.org # [WATCHDOG] s3c2410 watchdog power management # # Patch from Dimitry Andric , updated # by Ben Dooks . Patch is against 2.6.11-mm2 # # Add power management support to the s3c2410 watchdog, so that # it is shut-down over suspend, and re-initialised on resume. # # Also add Dimitry to the list of authors. # # Signed-off-by: Dimitry Andric # Signed-off-by: Ben Dooks # # drivers/char/watchdog/s3c2410_wdt.c # 2005/03/15 22:16:39+01:00 ben-linux@fluff.org +48 -3 # Add power management support to the s3c2410 watchdog # # ChangeSet # 2005/03/15 22:05:16+01:00 david@2gen.com # From: David Hardeman # # Add support for the intel 6300ESB chipset. # # drivers/char/watchdog/i8xx_tco.c # 2005/03/15 22:05:07+01:00 david@2gen.com +1 -0 # Add support for the intel 6300ESB chipset. # # ChangeSet # 2005/03/15 22:00:17+01:00 david@2gen.com # [WATCHDOG] i6300esb.patch # # From: David Hardeman # # I wrote earlier to the list[1] asking for a driver for the watchdog # included in the 6300ESB chipset. I got a 2.4 driver via private email # from Ross Biro which I've changed into what I hope resembles a 2.6 # driver (which was done by looking a lot at the watchdog drivers # already in the 2.6 tree). # # I've attached the result, and I'm hoping to get some feedback on the # coding as a first step. I can't actually test it on the hardware # right now as I won't have physical access until April. So my own tests # have been limited to "compiles-without-warnings" and # "can-be-insmodded-in-other-machine-without-oops". # # [1] http://marc.theaimsgroup.com/?l=linux-kernel&m=110711079825794&w=2 # [2] http://marc.theaimsgroup.com/?l=linux-kernel&m=110711973917746&w=2 # # Signed-off-by: Andrew Morton # # drivers/char/watchdog/i6300esb.h # 2005/02/22 00:51:59+01:00 david@2gen.com +62 -0 # Add Watchdog timer driver for Intel 6300ESB chipset. # # drivers/char/watchdog/i6300esb.h # 2005/02/22 00:51:59+01:00 david@2gen.com +0 -0 # BitKeeper file /home/wim/BitKeeper/projects/linux-2.6-watchdog-mm/drivers/char/watchdog/i6300esb.h # # drivers/char/watchdog/i6300esb.c # 2005/02/22 00:51:59+01:00 david@2gen.com +508 -0 # Add Watchdog timer driver for Intel 6300ESB chipset. # # drivers/char/watchdog/Makefile # 2005/02/22 00:51:59+01:00 david@2gen.com +1 -0 # Add Watchdog timer driver for Intel 6300ESB chipset. # # drivers/char/watchdog/Kconfig # 2005/02/22 00:51:59+01:00 david@2gen.com +10 -0 # Add Watchdog timer driver for Intel 6300ESB chipset. # # drivers/char/watchdog/i6300esb.c # 2005/02/22 00:51:59+01:00 david@2gen.com +0 -0 # BitKeeper file /home/wim/BitKeeper/projects/linux-2.6-watchdog-mm/drivers/char/watchdog/i6300esb.c # # ChangeSet # 2005/03/15 21:55:42+01:00 jchapman@katalix.com # [WATCHDOG] mv64x60_wdt.patch # # Add mv64x60 (Marvell Discovery) watchdog support. # # Signed-off-by: James Chapman # # drivers/char/watchdog/Makefile # 2005/03/15 21:55:34+01:00 jchapman@katalix.com +1 -0 # Add mv64x60 (Marvell Discovery) watchdog support. # # drivers/char/watchdog/Kconfig # 2005/03/15 21:55:34+01:00 jchapman@katalix.com +4 -0 # Add mv64x60 (Marvell Discovery) watchdog support. # # include/asm-ppc/mv64x60.h # 2005/02/24 11:45:36+01:00 jchapman@katalix.com +8 -0 # Add mv64x60 (Marvell Discovery) watchdog support. # # drivers/char/watchdog/mv64x60_wdt.c # 2005/02/24 11:45:36+01:00 jchapman@katalix.com +252 -0 # Add mv64x60 (Marvell Discovery) watchdog support. # # drivers/char/watchdog/mv64x60_wdt.c # 2005/02/24 11:45:36+01:00 jchapman@katalix.com +0 -0 # BitKeeper file /home/wim/BitKeeper/projects/linux-2.6-watchdog-mm/drivers/char/watchdog/mv64x60_wdt.c # # ChangeSet # 2005/03/15 21:47:03+01:00 wim@iguana.be # [WATCHDOG] correct sysfs name for watchdog devices # # While looking for possible candidates for our udev.rules package, # I found a few odd ->name properties. /dev/watchdog has minor 130 # according to devices.txt. Since all watchdog drivers use the # misc_register() call, they will end up in /sys/class/misc/$foo. # udev may create the /dev/watchdog node if the driver is loaded. # I dont have such a device, so I cant test it. # The drivers below provide names with spaces and even with / in it. # Not a big deal, but apps may expect /dev/watchdog. # # Signed-off-by: Olaf Hering # Signed-off-by: Wim Van Sebroeck # # drivers/char/watchdog/scx200_wdt.c # 2005/03/15 21:46:55+01:00 wim@iguana.be +1 -1 # While looking for possible candidates for our udev.rules package, # I found a few odd ->name properties. /dev/watchdog has minor 130 # according to devices.txt. Since all watchdog drivers use the # misc_register() call, they will end up in /sys/class/misc/$foo. # udev may create the /dev/watchdog node if the driver is loaded. # I dont have such a device, so I cant test it. # The drivers below provide names with spaces and even with / in it. # Not a big deal, but apps may expect /dev/watchdog. # # Signed-off-by: Olaf Hering # Signed-off-by: Wim Van Sebroeck # # drivers/char/watchdog/sa1100_wdt.c # 2005/03/15 21:46:55+01:00 wim@iguana.be +1 -1 # While looking for possible candidates for our udev.rules package, # I found a few odd ->name properties. /dev/watchdog has minor 130 # according to devices.txt. Since all watchdog drivers use the # misc_register() call, they will end up in /sys/class/misc/$foo. # udev may create the /dev/watchdog node if the driver is loaded. # I dont have such a device, so I cant test it. # The drivers below provide names with spaces and even with / in it. # Not a big deal, but apps may expect /dev/watchdog. # # Signed-off-by: Olaf Hering # Signed-off-by: Wim Van Sebroeck # # drivers/char/watchdog/ixp4xx_wdt.c # 2005/03/15 21:46:55+01:00 wim@iguana.be +1 -1 # While looking for possible candidates for our udev.rules package, # I found a few odd ->name properties. /dev/watchdog has minor 130 # according to devices.txt. Since all watchdog drivers use the # misc_register() call, they will end up in /sys/class/misc/$foo. # udev may create the /dev/watchdog node if the driver is loaded. # I dont have such a device, so I cant test it. # The drivers below provide names with spaces and even with / in it. # Not a big deal, but apps may expect /dev/watchdog. # # Signed-off-by: Olaf Hering # Signed-off-by: Wim Van Sebroeck # # drivers/char/watchdog/ixp2000_wdt.c # 2005/03/15 21:46:55+01:00 wim@iguana.be +1 -1 # While looking for possible candidates for our udev.rules package, # I found a few odd ->name properties. /dev/watchdog has minor 130 # according to devices.txt. Since all watchdog drivers use the # misc_register() call, they will end up in /sys/class/misc/$foo. # udev may create the /dev/watchdog node if the driver is loaded. # I dont have such a device, so I cant test it. # The drivers below provide names with spaces and even with / in it. # Not a big deal, but apps may expect /dev/watchdog. # # Signed-off-by: Olaf Hering # Signed-off-by: Wim Van Sebroeck # diff -Nru a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig Signed-off-by: Andrew Morton --- drivers/char/watchdog/Kconfig | 14 drivers/char/watchdog/Makefile | 71 +++-- drivers/char/watchdog/i6300esb.c | 508 ++++++++++++++++++++++++++++++++++++ drivers/char/watchdog/i6300esb.h | 62 ++++ drivers/char/watchdog/ixp2000_wdt.c | 2 drivers/char/watchdog/ixp4xx_wdt.c | 2 drivers/char/watchdog/mv64x60_wdt.c | 252 +++++++++++++++++ drivers/char/watchdog/s3c2410_wdt.c | 87 +++--- drivers/char/watchdog/scx200_wdt.c | 2 drivers/char/watchdog/wdt285.c | 4 include/asm-ppc/mv64x60.h | 8 char/watchdog/sa1100_wdt.c | 0 12 files changed, 952 insertions(+), 60 deletions(-) diff -puN /dev/null drivers/char/watchdog/i6300esb.c --- /dev/null 2003-09-15 06:40:47.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/i6300esb.c 2005-08-03 23:44:30.000000000 -0700 @@ -0,0 +1,508 @@ +/* + * i6300esb 0.03: Watchdog timer driver for Intel 6300ESB chipset + * + * (c) Copyright 2004 Google Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * based on i810-tco.c which is + * + * (c) Copyright 2000 kernel concepts + * developed for + * Jentro AG, Haar/Munich (Germany) + * + * which is in turn based on softdog.c by Alan Cox + * + * The timer is implemented in the following I/O controller hubs: + * (See the intel documentation on http://developer.intel.com.) + * 6300ESB chip : document number 300641-003 + * + * 2004YYZZ Ross Biro + * Initial version 0.01 + * 2004YYZZ Ross Biro + * Version 0.02 + * 20050210 David Härdeman + * Ported driver to kernel 2.6 + */ + +/* + * Includes, defines, variables, module parameters, ... + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "i6300esb.h" + +/* Module and version information */ +#define ESB_VERSION "0.03" +#define ESB_MODULE_NAME "i6300ESB timer" +#define ESB_DRIVER_NAME ESB_MODULE_NAME ", v" ESB_VERSION +#define PFX ESB_MODULE_NAME ": " + +/* internal variables */ +static void __iomem *BASEADDR; +static spinlock_t esb_lock; /* Guards the hardware */ +static unsigned long timer_alive; +static struct pci_dev *esb_pci; +static unsigned short triggered; /* The status of the watchdog upon boot */ +static char esb_expect_close; + +/* module parameters */ +#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat (1 (2 * 0x03ff)) + return -EINVAL; + + spin_lock(&esb_lock); + + /* We shift by 9, so if we are passed a value of 1 sec, + * val will be 1 << 9 = 512, then write that to two + * timers => 2 * 512 = 1024 (which is decremented at 1KHz) + */ + val = time << 9; + + /* Write timer 1 */ + esb_unlock_registers(); + writel(val, ESB_TIMER1_REG); + + /* Write timer 2 */ + esb_unlock_registers(); + writel(val, ESB_TIMER2_REG); + + /* Reload */ + esb_unlock_registers(); + writew(0x10, ESB_RELOAD_REG); + + /* FIXME: Do we need to flush everything out? */ + + /* Done */ + heartbeat = time; + spin_unlock(&esb_lock); + return 0; +} + +static int esb_timer_read (void) +{ + u32 count; + + /* This isn't documented, and doesn't take into + * acount which stage is running, but it looks + * like a 20 bit count down, so we might as well report it. + */ + pci_read_config_dword(esb_pci, 0x64, &count); + return (int)count; +} + +/* + * /dev/watchdog handling + */ + +static int esb_open (struct inode *inode, struct file *file) +{ + /* /dev/watchdog can only be opened once */ + if (test_and_set_bit(0, &timer_alive)) + return -EBUSY; + + /* Reload and activate timer */ + esb_timer_keepalive (); + esb_timer_start (); + + return nonseekable_open(inode, file); +} + +static int esb_release (struct inode *inode, struct file *file) +{ + /* Shut off the timer. */ + if (esb_expect_close == 42) { + esb_timer_stop (); + } else { + printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n"); + esb_timer_keepalive (); + } + clear_bit(0, &timer_alive); + esb_expect_close = 0; + return 0; +} + +static ssize_t esb_write (struct file *file, const char __user *data, + size_t len, loff_t * ppos) +{ + /* See if we got the magic character 'V' and reload the timer */ + if (len) { + if (!nowayout) { + size_t i; + + /* note: just in case someone wrote the magic character + * five months ago... */ + esb_expect_close = 0; + + /* scan to see whether or not we got the magic character */ + for (i = 0; i != len; i++) { + char c; + if(get_user(c, data+i)) + return -EFAULT; + if (c == 'V') + esb_expect_close = 42; + } + } + + /* someone wrote to us, we should reload the timer */ + esb_timer_keepalive (); + } + return len; +} + +static int esb_ioctl (struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + int new_options, retval = -EINVAL; + int new_heartbeat; + void __user *argp = (void __user *)arg; + int __user *p = argp; + static struct watchdog_info ident = { + .options = WDIOF_SETTIMEOUT | + WDIOF_KEEPALIVEPING | + WDIOF_MAGICCLOSE, + .firmware_version = 0, + .identity = ESB_MODULE_NAME, + }; + + switch (cmd) { + case WDIOC_GETSUPPORT: + return copy_to_user(argp, &ident, + sizeof (ident)) ? -EFAULT : 0; + + case WDIOC_GETSTATUS: + return put_user (esb_timer_read(), p); + + case WDIOC_GETBOOTSTATUS: + return put_user (triggered, p); + + case WDIOC_KEEPALIVE: + esb_timer_keepalive (); + return 0; + + case WDIOC_SETOPTIONS: + { + if (get_user (new_options, p)) + return -EFAULT; + + if (new_options & WDIOS_DISABLECARD) { + esb_timer_stop (); + retval = 0; + } + + if (new_options & WDIOS_ENABLECARD) { + esb_timer_keepalive (); + esb_timer_start (); + retval = 0; + } + + return retval; + } + + case WDIOC_SETTIMEOUT: + { + if (get_user(new_heartbeat, p)) + return -EFAULT; + + if (esb_timer_set_heartbeat(new_heartbeat)) + return -EINVAL; + + esb_timer_keepalive (); + /* Fall */ + } + + case WDIOC_GETTIMEOUT: + return put_user(heartbeat, p); + + default: + return -ENOIOCTLCMD; + } +} + +/* + * Notify system + */ + +static int esb_notify_sys (struct notifier_block *this, unsigned long code, void *unused) +{ + if (code==SYS_DOWN || code==SYS_HALT) { + /* Turn the WDT off */ + esb_timer_stop (); + } + + return NOTIFY_DONE; +} + +/* + * Kernel Interfaces + */ + +static struct file_operations esb_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .write = esb_write, + .ioctl = esb_ioctl, + .open = esb_open, + .release = esb_release, +}; + +static struct miscdevice esb_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &esb_fops, +}; + +static struct notifier_block esb_notifier = { + .notifier_call = esb_notify_sys, +}; + +/* + * Data for PCI driver interface + * + * This data only exists for exporting the supported + * PCI ids via MODULE_DEVICE_TABLE. We do not actually + * register a pci_driver, because someone else might one day + * want to register another driver on the same PCI id. + */ +static struct pci_device_id esb_pci_tbl[] = { + { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9, PCI_ANY_ID, PCI_ANY_ID, }, + { 0, }, /* End of list */ +}; +MODULE_DEVICE_TABLE (pci, esb_pci_tbl); + +/* + * Init & exit routines + */ + +static unsigned char __init esb_getdevice (void) +{ + u8 val1; + unsigned short val2; + + struct pci_dev *dev = NULL; + /* + * Find the PCI device + */ + + while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { + if (pci_match_device(esb_pci_tbl, dev)) { + esb_pci = dev; + break; + } + } + + if (esb_pci) { + if (pci_enable_device(esb_pci)) { + printk (KERN_ERR PFX "failed to enable device\n"); + goto out; + } + + if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) { + printk (KERN_ERR PFX "failed to request region\n"); + goto err_disable; + } + + BASEADDR = ioremap(pci_resource_start(esb_pci, 0), + pci_resource_len(esb_pci, 0)); + if (BASEADDR == NULL) { + /* Something's wrong here, BASEADDR has to be set */ + printk (KERN_ERR PFX "failed to get BASEADDR\n"); + goto err_release; + } + + /* + * The watchdog has two timers, it can be setup so that the + * expiry of timer1 results in an interrupt and the expiry of + * timer2 results in a reboot. We set it to not generate + * any interrupts as there is not much we can do with it + * right now. + * + * We also enable reboots and set the timer frequency to + * the PCI clock divided by 2^15 (approx 1KHz). + */ + pci_write_config_word(esb_pci, ESB_CONFIG_REG, 0x0003); + + /* Check that the WDT isn't already locked */ + pci_read_config_byte(esb_pci, ESB_LOCK_REG, &val1); + if (val1 & ESB_WDT_LOCK) + printk (KERN_WARNING PFX "nowayout already set\n"); + + /* Set the timer to watchdog mode and disable it for now */ + pci_write_config_byte(esb_pci, ESB_LOCK_REG, 0x00); + + /* Check if the watchdog was previously triggered */ + esb_unlock_registers(); + val2 = readw(ESB_RELOAD_REG); + triggered = (val2 & (0x01 << 9) >> 9); + + /* Reset trigger flag and timers */ + esb_unlock_registers(); + writew((0x11 << 8), ESB_RELOAD_REG); + + /* Done */ + return 1; + +err_release: + pci_release_region(esb_pci, 0); +err_disable: + pci_disable_device(esb_pci); + } +out: + return 0; +} + +static int __init watchdog_init (void) +{ + int ret; + + spin_lock_init(&esb_lock); + + /* Check whether or not the hardware watchdog is there */ + if (!esb_getdevice () || esb_pci == NULL) + return -ENODEV; + + /* Check that the heartbeat value is within it's range ; if not reset to the default */ + if (esb_timer_set_heartbeat (heartbeat)) { + esb_timer_set_heartbeat (WATCHDOG_HEARTBEAT); + printk(KERN_INFO PFX "heartbeat value must be 1, All Rights Reserved. + * http://www.kernelconcepts.de + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Neither kernel concepts nor Nils Faerber admit liability nor provide + * warranty for any of this software. This material is provided + * "AS-IS" and at no charge. + * + * (c) Copyright 2000 kernel concepts + * developed for + * Jentro AG, Haar/Munich (Germany) + * + * TCO timer driver for i8xx chipsets + * based on softdog.c by Alan Cox + * + * For history and the complete list of supported I/O Controller Hub's + * see i8xx_tco.c + */ + + +/* + * Some address definitions for the TCO + */ + +/* PCI configuration registers */ +#define ESB_CONFIG_REG 0x60 /* Config register */ +#define ESB_LOCK_REG 0x68 /* WDT lock register */ + +/* Memory mapped registers */ +#define ESB_TIMER1_REG BASEADDR + 0x00 /* Timer1 value after each reset */ +#define ESB_TIMER2_REG BASEADDR + 0x04 /* Timer2 value after each reset */ +#define ESB_GINTSR_REG BASEADDR + 0x08 /* General Interrupt Status Register */ +#define ESB_RELOAD_REG BASEADDR + 0x0c /* Reload register */ + + +/* + * Some register bits + */ + +/* Lock register bits */ +#define ESB_WDT_FUNC ( 0x01 << 2 ) /* Watchdog functionality */ +#define ESB_WDT_ENABLE ( 0x01 << 1 ) /* Enable WDT */ +#define ESB_WDT_LOCK ( 0x01 << 0 ) /* Lock (nowayout) */ + +/* Config register bits */ +#define ESB_WDT_REBOOT ( 0x01 << 5 ) /* Enable reboot on timeout */ +#define ESB_WDT_FREQ ( 0x01 << 2 ) /* Decrement frequency */ +#define ESB_WDT_INTTYPE ( 0x11 << 0 ) /* Interrupt type on timer1 timeout */ + + +/* + * Some magic constants + */ +#define ESB_UNLOCK1 0x80 /* Step 1 to unlock reset registers */ +#define ESB_UNLOCK2 0x86 /* Step 2 to unlock reset registers */ diff -puN drivers/char/watchdog/ixp2000_wdt.c~bk-watchdog drivers/char/watchdog/ixp2000_wdt.c --- devel/drivers/char/watchdog/ixp2000_wdt.c~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/ixp2000_wdt.c 2005-08-03 23:44:30.000000000 -0700 @@ -182,7 +182,7 @@ static struct file_operations ixp2000_wd static struct miscdevice ixp2000_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = "IXP2000 Watchdog", + .name = "watchdog", .fops = &ixp2000_wdt_fops, }; diff -puN drivers/char/watchdog/ixp4xx_wdt.c~bk-watchdog drivers/char/watchdog/ixp4xx_wdt.c --- devel/drivers/char/watchdog/ixp4xx_wdt.c~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/ixp4xx_wdt.c 2005-08-03 23:44:30.000000000 -0700 @@ -176,7 +176,7 @@ static struct file_operations ixp4xx_wdt static struct miscdevice ixp4xx_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = "IXP4xx Watchdog", + .name = "watchdog", .fops = &ixp4xx_wdt_fops, }; diff -puN drivers/char/watchdog/Kconfig~bk-watchdog drivers/char/watchdog/Kconfig --- devel/drivers/char/watchdog/Kconfig~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/Kconfig 2005-08-03 23:44:30.000000000 -0700 @@ -252,6 +252,16 @@ config I8XX_TCO To compile this driver as a module, choose M here: the module will be called i8xx_tco. +config I6300ESB_WDT + tristate "Intel 6300ESB Timer/Watchdog" + depends on WATCHDOG && X86 && PCI + ---help--- + Hardware driver for the watchdog timer built into the Intel + 6300ESB controller hub. + + To compile this driver as a module, choose M here: the + module will be called i6300esb. + config SC1200_WDT tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" depends on WATCHDOG && X86 @@ -346,6 +356,10 @@ config 8xx_WDT tristate "MPC8xx Watchdog Timer" depends on WATCHDOG && 8xx +config MV64X60_WDT + tristate "MV64X60 (Marvell Discovery) Watchdog Timer" + depends on WATCHDOG && MV64X60 + # MIPS Architecture config INDYDOG diff -puN drivers/char/watchdog/Makefile~bk-watchdog drivers/char/watchdog/Makefile --- devel/drivers/char/watchdog/Makefile~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/Makefile 2005-08-03 23:44:30.000000000 -0700 @@ -2,42 +2,67 @@ # Makefile for the WatchDog device drivers. # +# Only one watchdog can succeed. We probe the ISA/PCI/USB based +# watchdog-cards first, then the architecture specific watchdog +# drivers and then the architecture independant "softdog" driver. +# This means that if your ISA/PCI/USB card isn't detected that +# you can fall back to an architecture specific driver and if +# that also fails then you can fall back to the software watchdog +# to give you some cover. + +# ISA-based Watchdog Cards obj-$(CONFIG_PCWATCHDOG) += pcwd.o -obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o -obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o -obj-$(CONFIG_IB700_WDT) += ib700wdt.o obj-$(CONFIG_MIXCOMWD) += mixcomwd.o -obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o -obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o obj-$(CONFIG_WDT) += wdt.o + +# PCI-based Watchdog Cards +obj-$(CONFIG_PCIPCWATCHDOG) += pcwd_pci.o obj-$(CONFIG_WDTPCI) += wdt_pci.o + +# USB-based Watchdog Cards +obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o + +# ARM Architecture obj-$(CONFIG_21285_WATCHDOG) += wdt285.o obj-$(CONFIG_977_WATCHDOG) += wdt977.o -obj-$(CONFIG_I8XX_TCO) += i8xx_tco.o -obj-$(CONFIG_MACHZ_WDT) += machzwd.o -obj-$(CONFIG_SH_WDT) += shwdt.o +obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o +obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o -obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o -obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o -obj-$(CONFIG_W83627HF_WDT) += w83627hf_wdt.o -obj-$(CONFIG_SC520_WDT) += sc520_wdt.o -obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o + +# X86 (i386 + ia64 + x86_64) Architecture +obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o +obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o obj-$(CONFIG_ALIM1535_WDT) += alim1535_wdt.o -obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o +obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o +obj-$(CONFIG_SC520_WDT) += sc520_wdt.o +obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o +obj-$(CONFIG_IB700_WDT) += ib700wdt.o obj-$(CONFIG_WAFER_WDT) += wafer5823wdt.o +obj-$(CONFIG_I8XX_TCO) += i8xx_tco.o +obj-$(CONFIG_I6300ESB_WDT) += i6300esb.o +obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o +obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o +obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o obj-$(CONFIG_CPU5_WDT) += cpu5wdt.o -obj-$(CONFIG_INDYDOG) += indydog.o -obj-$(CONFIG_PCIPCWATCHDOG) += pcwd_pci.o -obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o -obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o -obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o +obj-$(CONFIG_W83627HF_WDT) += w83627hf_wdt.o +obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o +obj-$(CONFIG_MACHZ_WDT) += machzwd.o + +# PowerPC Architecture obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o +obj-$(CONFIG_MV64X60_WDT) += mv64x60_wdt.o obj-$(CONFIG_WATCHDOG_RTAS) += wdrtas.o -# Only one watchdog can succeed. We probe the hardware watchdog -# drivers first, then the softdog driver. This means if your hardware -# watchdog dies or is 'borrowed' for some reason the software watchdog -# still gives you some cover. +# MIPS Architecture +obj-$(CONFIG_INDYDOG) += indydog.o + +# S390 Architecture + +# SUPERH Architecture +obj-$(CONFIG_SH_WDT) += shwdt.o + +# SPARC64 Architecture +# Architecture Independant obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o diff -puN /dev/null drivers/char/watchdog/mv64x60_wdt.c --- /dev/null 2003-09-15 06:40:47.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/mv64x60_wdt.c 2005-08-03 23:44:30.000000000 -0700 @@ -0,0 +1,252 @@ +/* + * mv64x60_wdt.c - MV64X60 (Marvell Discovery) watchdog userspace interface + * + * Author: James Chapman + * + * Platform-specific setup code should configure the dog to generate + * interrupt or reset as required. This code only enables/disables + * and services the watchdog. + * + * Derived from mpc8xx_wdt.c, with the following copyright. + * + * 2002 (c) Florian Schirmer 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* MV64x60 WDC (config) register access definitions */ +#define MV64x60_WDC_CTL1_MASK (3 << 24) +#define MV64x60_WDC_CTL1(val) ((val & 3) << 24) +#define MV64x60_WDC_CTL2_MASK (3 << 26) +#define MV64x60_WDC_CTL2(val) ((val & 3) << 26) + +/* Flags bits */ +#define MV64x60_WDOG_FLAG_OPENED 0 +#define MV64x60_WDOG_FLAG_ENABLED 1 + +static unsigned long wdt_flags; +static int wdt_status; +static void __iomem *mv64x60_regs; +static int mv64x60_wdt_timeout; + +static void mv64x60_wdt_reg_write(u32 val) +{ + /* Allow write only to CTL1 / CTL2 fields, retaining values in + * other fields. + */ + u32 data = readl(mv64x60_regs + MV64x60_WDT_WDC); + data &= ~(MV64x60_WDC_CTL1_MASK | MV64x60_WDC_CTL2_MASK); + data |= val; + writel(data, mv64x60_regs + MV64x60_WDT_WDC); +} + +static void mv64x60_wdt_service(void) +{ + /* Write 01 followed by 10 to CTL2 */ + mv64x60_wdt_reg_write(MV64x60_WDC_CTL2(0x01)); + mv64x60_wdt_reg_write(MV64x60_WDC_CTL2(0x02)); +} + +static void mv64x60_wdt_handler_disable(void) +{ + if (test_and_clear_bit(MV64x60_WDOG_FLAG_ENABLED, &wdt_flags)) { + /* Write 01 followed by 10 to CTL1 */ + mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x01)); + mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x02)); + printk(KERN_NOTICE "mv64x60_wdt: watchdog deactivated\n"); + } +} + +static void mv64x60_wdt_handler_enable(void) +{ + if (!test_and_set_bit(MV64x60_WDOG_FLAG_ENABLED, &wdt_flags)) { + /* Write 01 followed by 10 to CTL1 */ + mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x01)); + mv64x60_wdt_reg_write(MV64x60_WDC_CTL1(0x02)); + printk(KERN_NOTICE "mv64x60_wdt: watchdog activated\n"); + } +} + +static int mv64x60_wdt_open(struct inode *inode, struct file *file) +{ + if (test_and_set_bit(MV64x60_WDOG_FLAG_OPENED, &wdt_flags)) + return -EBUSY; + + mv64x60_wdt_service(); + mv64x60_wdt_handler_enable(); + + return 0; +} + +static int mv64x60_wdt_release(struct inode *inode, struct file *file) +{ + mv64x60_wdt_service(); + +#if !defined(CONFIG_WATCHDOG_NOWAYOUT) + mv64x60_wdt_handler_disable(); +#endif + + clear_bit(MV64x60_WDOG_FLAG_OPENED, &wdt_flags); + + return 0; +} + +static ssize_t mv64x60_wdt_write(struct file *file, const char *data, + size_t len, loff_t * ppos) +{ + if (*ppos != file->f_pos) + return -ESPIPE; + + if (len) + mv64x60_wdt_service(); + + return len; +} + +static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + int timeout; + static struct watchdog_info info = { + .options = WDIOF_KEEPALIVEPING, + .firmware_version = 0, + .identity = "MV64x60 watchdog", + }; + + switch (cmd) { + case WDIOC_GETSUPPORT: + if (copy_to_user((void *)arg, &info, sizeof(info))) + return -EFAULT; + break; + + case WDIOC_GETSTATUS: + case WDIOC_GETBOOTSTATUS: + if (put_user(wdt_status, (int *)arg)) + return -EFAULT; + wdt_status &= ~WDIOF_KEEPALIVEPING; + break; + + case WDIOC_GETTEMP: + return -EOPNOTSUPP; + + case WDIOC_SETOPTIONS: + return -EOPNOTSUPP; + + case WDIOC_KEEPALIVE: + mv64x60_wdt_service(); + wdt_status |= WDIOF_KEEPALIVEPING; + break; + + case WDIOC_SETTIMEOUT: + return -EOPNOTSUPP; + + case WDIOC_GETTIMEOUT: + timeout = mv64x60_wdt_timeout * HZ; + if (put_user(timeout, (int *)arg)) + return -EFAULT; + break; + + default: + return -ENOIOCTLCMD; + } + + return 0; +} + +static struct file_operations mv64x60_wdt_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .write = mv64x60_wdt_write, + .ioctl = mv64x60_wdt_ioctl, + .open = mv64x60_wdt_open, + .release = mv64x60_wdt_release, +}; + +static struct miscdevice mv64x60_wdt_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &mv64x60_wdt_fops, +}; + +static int __devinit mv64x60_wdt_probe(struct device *dev) +{ + struct platform_device *pd = to_platform_device(dev); + struct mv64x60_wdt_pdata *pdata = pd->dev.platform_data; + int bus_clk = 133; + + mv64x60_wdt_timeout = 10; + if (pdata) { + mv64x60_wdt_timeout = pdata->timeout; + bus_clk = pdata->bus_clk; + } + + mv64x60_regs = mv64x60_get_bridge_vbase(); + + writel((mv64x60_wdt_timeout * (bus_clk * 1000000)) >> 8, + mv64x60_regs + MV64x60_WDT_WDC); + + return misc_register(&mv64x60_wdt_miscdev); +} + +static int __devexit mv64x60_wdt_remove(struct device *dev) +{ + misc_deregister(&mv64x60_wdt_miscdev); + + mv64x60_wdt_service(); + mv64x60_wdt_handler_disable(); + + return 0; +} + +static struct device_driver mv64x60_wdt_driver = { + .name = MV64x60_WDT_NAME, + .bus = &platform_bus_type, + .probe = mv64x60_wdt_probe, + .remove = __devexit_p(mv64x60_wdt_remove), +}; + +static struct platform_device *mv64x60_wdt_dev; + +static int __init mv64x60_wdt_init(void) +{ + int ret; + + printk(KERN_INFO "MV64x60 watchdog driver\n"); + + mv64x60_wdt_dev = platform_device_register_simple(MV64x60_WDT_NAME, + -1, NULL, 0); + if (IS_ERR(mv64x60_wdt_dev)) { + ret = PTR_ERR(mv64x60_wdt_dev); + goto out; + } + + ret = driver_register(&mv64x60_wdt_driver); + out: + return ret; +} + +static void __exit mv64x60_wdt_exit(void) +{ + driver_unregister(&mv64x60_wdt_driver); + platform_device_unregister(mv64x60_wdt_dev); +} + +module_init(mv64x60_wdt_init); +module_exit(mv64x60_wdt_exit); + +MODULE_AUTHOR("James Chapman "); +MODULE_DESCRIPTION("MV64x60 watchdog driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff -puN drivers/char/watchdog/s3c2410_wdt.c~bk-watchdog drivers/char/watchdog/s3c2410_wdt.c --- devel/drivers/char/watchdog/s3c2410_wdt.c~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/s3c2410_wdt.c 2005-08-03 23:44:30.000000000 -0700 @@ -27,7 +27,10 @@ * Fixed tmr_count / wdt_count confusion * Added configurable debug * - * 11-Jan-2004 BJD Fixed divide-by-2 in timeout code + * 11-Jan-2005 BJD Fixed divide-by-2 in timeout code + * + * 25-Jan-2005 DA Added suspend/resume support + * Replaced reboot notifier with .shutdown method * * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA */ @@ -40,8 +43,6 @@ #include #include #include -#include -#include #include #include #include @@ -317,20 +318,6 @@ static int s3c2410wdt_ioctl(struct inode } } -/* - * Notifier for system down - */ - -static int s3c2410wdt_notify_sys(struct notifier_block *this, unsigned long code, - void *unused) -{ - if(code==SYS_DOWN || code==SYS_HALT) { - /* Turn the WDT off */ - s3c2410wdt_stop(); - } - return NOTIFY_DONE; -} - /* kernel interface */ static struct file_operations s3c2410wdt_fops = { @@ -348,10 +335,6 @@ static struct miscdevice s3c2410wdt_misc .fops = &s3c2410wdt_fops, }; -static struct notifier_block s3c2410wdt_notifier = { - .notifier_call = s3c2410wdt_notify_sys, -}; - /* interrupt handler code */ static irqreturn_t s3c2410wdt_irq(int irqno, void *param, @@ -432,18 +415,10 @@ static int s3c2410wdt_probe(struct devic } } - ret = register_reboot_notifier(&s3c2410wdt_notifier); - if (ret) { - printk (KERN_ERR PFX "cannot register reboot notifier (%d)\n", - ret); - return ret; - } - ret = misc_register(&s3c2410wdt_miscdev); if (ret) { printk (KERN_ERR PFX "cannot register miscdev on minor=%d (%d)\n", WATCHDOG_MINOR, ret); - unregister_reboot_notifier(&s3c2410wdt_notifier); return ret; } @@ -479,15 +454,63 @@ static int s3c2410wdt_remove(struct devi return 0; } +static void s3c2410wdt_shutdown(struct device *dev) +{ + s3c2410wdt_stop(); +} + +#ifdef CONFIG_PM + +static unsigned long wtcon_save; +static unsigned long wtdat_save; + +static int s3c2410wdt_suspend(struct device *dev, u32 state, u32 level) +{ + if (level == SUSPEND_POWER_DOWN) { + /* Save watchdog state, and turn it off. */ + wtcon_save = readl(wdt_base + S3C2410_WTCON); + wtdat_save = readl(wdt_base + S3C2410_WTDAT); + + /* Note that WTCNT doesn't need to be saved. */ + s3c2410wdt_stop(); + } + + return 0; +} + +static int s3c2410wdt_resume(struct device *dev, u32 level) +{ + if (level == RESUME_POWER_ON) { + /* Restore watchdog state. */ + + writel(wtdat_save, wdt_base + S3C2410_WTDAT); + writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */ + writel(wtcon_save, wdt_base + S3C2410_WTCON); + + printk(KERN_INFO PFX "watchdog %sabled\n", + (wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis"); + } + + return 0; +} + +#else +#define s3c2410wdt_suspend NULL +#define s3c2410wdt_resume NULL +#endif /* CONFIG_PM */ + + static struct device_driver s3c2410wdt_driver = { .name = "s3c2410-wdt", .bus = &platform_bus_type, .probe = s3c2410wdt_probe, .remove = s3c2410wdt_remove, + .shutdown = s3c2410wdt_shutdown, + .suspend = s3c2410wdt_suspend, + .resume = s3c2410wdt_resume, }; - static char banner[] __initdata = KERN_INFO "S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics\n"; static int __init watchdog_init(void) @@ -499,13 +522,13 @@ static int __init watchdog_init(void) static void __exit watchdog_exit(void) { driver_unregister(&s3c2410wdt_driver); - unregister_reboot_notifier(&s3c2410wdt_notifier); } module_init(watchdog_init); module_exit(watchdog_exit); -MODULE_AUTHOR("Ben Dooks "); +MODULE_AUTHOR("Ben Dooks , " + "Dimitry Andric "); MODULE_DESCRIPTION("S3C2410 Watchdog Device Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff -puN drivers/char/watchdog/sa1100_wdt.c~bk-watchdog drivers/char/watchdog/sa1100_wdt.c diff -puN drivers/char/watchdog/scx200_wdt.c~bk-watchdog drivers/char/watchdog/scx200_wdt.c --- devel/drivers/char/watchdog/scx200_wdt.c~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/scx200_wdt.c 2005-08-03 23:44:32.000000000 -0700 @@ -206,7 +206,7 @@ static struct file_operations scx200_wdt static struct miscdevice scx200_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = NAME, + .name = "watchdog", .fops = &scx200_wdt_fops, }; diff -puN drivers/char/watchdog/wdt285.c~bk-watchdog drivers/char/watchdog/wdt285.c --- devel/drivers/char/watchdog/wdt285.c~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/drivers/char/watchdog/wdt285.c 2005-08-03 23:44:32.000000000 -0700 @@ -204,11 +204,11 @@ static int __init footbridge_watchdog_in if (retval < 0) return retval; - printk("Footbridge Watchdog Timer: 0.01, timer margin: %d sec\n", + printk(KERN_INFO "Footbridge Watchdog Timer: 0.01, timer margin: %d sec\n", soft_margin); if (machine_is_cats()) - printk("Warning: Watchdog reset may not work on this machine.\n"); + printk(KERN_WARNING "Warning: Watchdog reset may not work on this machine.\n"); return 0; } diff -puN include/asm-ppc/mv64x60.h~bk-watchdog include/asm-ppc/mv64x60.h --- devel/include/asm-ppc/mv64x60.h~bk-watchdog 2005-08-03 23:44:30.000000000 -0700 +++ devel-akpm/include/asm-ppc/mv64x60.h 2005-08-03 23:44:32.000000000 -0700 @@ -119,6 +119,14 @@ extern spinlock_t mv64x60_lock; #define MV64x60_64BIT_WIN_COUNT 24 +/* Watchdog Platform Device, Driver Data */ +#define MV64x60_WDT_NAME "wdt" + +struct mv64x60_wdt_pdata { + int timeout; /* watchdog expiry in seconds, default 10 */ + int bus_clk; /* bus clock in MHz, default 133 */ +}; + /* * Define a structure that's used to pass in config information to the * core routines. _