summaryrefslogtreecommitdiff
path: root/drivers/watchdog
diff options
context:
space:
mode:
authorIngo Molnar <mingo@elte.hu>2008-06-16 11:19:53 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-16 11:19:53 +0200
commit064a32d82c20cdcb0119a8b316eb520608d8c647 (patch)
treec67d534bd4458b1482c11f11c724fe93beca4f80 /drivers/watchdog
parent0327318445d55808991a63137cfb698a90ab6adf (diff)
parent066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff)
Merge branch 'linus' into x86/memtesttip-x86-memtest-2008-06-16_09.19_Mon
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/Kconfig13
-rw-r--r--drivers/watchdog/Makefile1
-rw-r--r--drivers/watchdog/bfin_wdt.c111
-rw-r--r--drivers/watchdog/booke_wdt.c88
-rw-r--r--drivers/watchdog/geodewdt.c308
-rw-r--r--drivers/watchdog/hpwdt.c27
-rw-r--r--drivers/watchdog/iTCO_wdt.c14
-rw-r--r--drivers/watchdog/w83697hf_wdt.c38
8 files changed, 484 insertions, 116 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 254d115cafab..ccb78f66c2b6 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -295,6 +295,19 @@ config ALIM7101_WDT
Most people will say N.
+config GEODE_WDT
+ tristate "AMD Geode CS5535/CS5536 Watchdog"
+ depends on MGEODE_LX
+ help
+ This driver enables a watchdog capability built into the
+ CS5535/CS5536 companion chips for the AMD Geode GX and LX
+ processors. This watchdog watches your kernel to make sure
+ it doesn't freeze, and if it does, it reboots your computer after
+ a certain amount of time.
+
+ You can compile this driver directly into the kernel, or use
+ it as a module. The module will be called geodewdt.
+
config SC520_WDT
tristate "AMD Elan SC520 processor Watchdog"
depends on X86
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index f3fb170fe5c6..25b352b664d9 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -59,6 +59,7 @@ obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o
obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o
obj-$(CONFIG_ALIM1535_WDT) += alim1535_wdt.o
obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o
+obj-$(CONFIG_GEODE_WDT) += geodewdt.o
obj-$(CONFIG_SC520_WDT) += sc520_wdt.o
obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o
obj-$(CONFIG_IB700_WDT) += ib700wdt.o
diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c
index 1237113dc14a..03b3e3d91e7c 100644
--- a/drivers/watchdog/bfin_wdt.c
+++ b/drivers/watchdog/bfin_wdt.c
@@ -29,7 +29,8 @@
#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args)
#define stampit() stamp("here i am")
-#define pr_init(fmt, args...) ({ static const __initdata char __fmt[] = fmt; printk(__fmt, ## args); })
+#define pr_devinit(fmt, args...) ({ static const __devinitconst char __fmt[] = fmt; printk(__fmt, ## args); })
+#define pr_init(fmt, args...) ({ static const __initconst char __fmt[] = fmt; printk(__fmt, ## args); })
#define WATCHDOG_NAME "bfin-wdt"
#define PFX WATCHDOG_NAME ": "
@@ -377,20 +378,6 @@ static int bfin_wdt_resume(struct platform_device *pdev)
# define bfin_wdt_resume NULL
#endif
-static struct platform_device bfin_wdt_device = {
- .name = WATCHDOG_NAME,
- .id = -1,
-};
-
-static struct platform_driver bfin_wdt_driver = {
- .driver = {
- .name = WATCHDOG_NAME,
- .owner = THIS_MODULE,
- },
- .suspend = bfin_wdt_suspend,
- .resume = bfin_wdt_resume,
-};
-
static const struct file_operations bfin_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
@@ -418,11 +405,67 @@ static struct notifier_block bfin_wdt_notifier = {
};
/**
- * bfin_wdt_init - Initialize module
+ * bfin_wdt_probe - Initialize module
*
- * Registers the device and notifier handler. Actual device
+ * Registers the misc device and notifier handler. Actual device
* initialization is handled by bfin_wdt_open().
*/
+static int __devinit bfin_wdt_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = register_reboot_notifier(&bfin_wdt_notifier);
+ if (ret) {
+ pr_devinit(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n", ret);
+ return ret;
+ }
+
+ ret = misc_register(&bfin_wdt_miscdev);
+ if (ret) {
+ pr_devinit(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
+ unregister_reboot_notifier(&bfin_wdt_notifier);
+ return ret;
+ }
+
+ pr_devinit(KERN_INFO PFX "initialized: timeout=%d sec (nowayout=%d)\n",
+ timeout, nowayout);
+
+ return 0;
+}
+
+/**
+ * bfin_wdt_remove - Initialize module
+ *
+ * Unregisters the misc device and notifier handler. Actual device
+ * deinitialization is handled by bfin_wdt_close().
+ */
+static int __devexit bfin_wdt_remove(struct platform_device *pdev)
+{
+ misc_deregister(&bfin_wdt_miscdev);
+ unregister_reboot_notifier(&bfin_wdt_notifier);
+ return 0;
+}
+
+static struct platform_device *bfin_wdt_device;
+
+static struct platform_driver bfin_wdt_driver = {
+ .probe = bfin_wdt_probe,
+ .remove = __devexit_p(bfin_wdt_remove),
+ .suspend = bfin_wdt_suspend,
+ .resume = bfin_wdt_resume,
+ .driver = {
+ .name = WATCHDOG_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+/**
+ * bfin_wdt_init - Initialize module
+ *
+ * Checks the module params and registers the platform device & driver.
+ * Real work is in the platform probe function.
+ */
static int __init bfin_wdt_init(void)
{
int ret;
@@ -436,44 +479,32 @@ static int __init bfin_wdt_init(void)
/* Since this is an on-chip device and needs no board-specific
* resources, we'll handle all the platform device stuff here.
*/
- ret = platform_device_register(&bfin_wdt_device);
- if (ret)
- return ret;
-
- ret = platform_driver_probe(&bfin_wdt_driver, NULL);
- if (ret)
- return ret;
-
- ret = register_reboot_notifier(&bfin_wdt_notifier);
+ ret = platform_driver_register(&bfin_wdt_driver);
if (ret) {
- pr_init(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n", ret);
+ pr_init(KERN_ERR PFX "unable to register driver\n");
return ret;
}
- ret = misc_register(&bfin_wdt_miscdev);
- if (ret) {
- pr_init(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- unregister_reboot_notifier(&bfin_wdt_notifier);
- return ret;
+ bfin_wdt_device = platform_device_register_simple(WATCHDOG_NAME, -1, NULL, 0);
+ if (IS_ERR(bfin_wdt_device)) {
+ pr_init(KERN_ERR PFX "unable to register device\n");
+ platform_driver_unregister(&bfin_wdt_driver);
+ return PTR_ERR(bfin_wdt_device);
}
- pr_init(KERN_INFO PFX "initialized: timeout=%d sec (nowayout=%d)\n",
- timeout, nowayout);
-
return 0;
}
/**
* bfin_wdt_exit - Deinitialize module
*
- * Unregisters the device and notifier handler. Actual device
- * deinitialization is handled by bfin_wdt_close().
+ * Back out the platform device & driver steps. Real work is in the
+ * platform remove function.
*/
static void __exit bfin_wdt_exit(void)
{
- misc_deregister(&bfin_wdt_miscdev);
- unregister_reboot_notifier(&bfin_wdt_notifier);
+ platform_device_unregister(bfin_wdt_device);
+ platform_driver_unregister(&bfin_wdt_driver);
}
module_init(bfin_wdt_init);
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c
index d362f5bf658a..c1ba0db48501 100644
--- a/drivers/watchdog/booke_wdt.c
+++ b/drivers/watchdog/booke_wdt.c
@@ -1,12 +1,10 @@
/*
- * drivers/char/watchdog/booke_wdt.c
- *
* Watchdog timer for PowerPC Book-E systems
*
* Author: Matthew McClintock
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
*
- * Copyright 2005 Freescale Semiconductor Inc.
+ * Copyright 2005, 2008 Freescale Semiconductor 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
@@ -16,6 +14,7 @@
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/smp.h>
#include <linux/miscdevice.h>
#include <linux/notifier.h>
#include <linux/watchdog.h>
@@ -38,7 +37,7 @@
#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */
#endif /* for timing information */
-u32 booke_wdt_enabled = 0;
+u32 booke_wdt_enabled;
u32 booke_wdt_period = WDT_PERIOD_DEFAULT;
#ifdef CONFIG_FSL_BOOKE
@@ -47,33 +46,31 @@ u32 booke_wdt_period = WDT_PERIOD_DEFAULT;
#define WDTP(x) (TCR_WP(x))
#endif
-/*
- * booke_wdt_ping:
- */
-static __inline__ void booke_wdt_ping(void)
+static DEFINE_SPINLOCK(booke_wdt_lock);
+
+static void __booke_wdt_ping(void *data)
{
mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
}
-/*
- * booke_wdt_enable:
- */
-static __inline__ void booke_wdt_enable(void)
+static void booke_wdt_ping(void)
+{
+ on_each_cpu(__booke_wdt_ping, NULL, 0, 0);
+}
+
+static void __booke_wdt_enable(void *data)
{
u32 val;
/* clear status before enabling watchdog */
- booke_wdt_ping();
+ __booke_wdt_ping(NULL);
val = mfspr(SPRN_TCR);
val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period));
mtspr(SPRN_TCR, val);
}
-/*
- * booke_wdt_write:
- */
-static ssize_t booke_wdt_write (struct file *file, const char __user *buf,
+static ssize_t booke_wdt_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
booke_wdt_ping();
@@ -81,15 +78,11 @@ static ssize_t booke_wdt_write (struct file *file, const char __user *buf,
}
static struct watchdog_info ident = {
- .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
- .firmware_version = 0,
- .identity = "PowerPC Book-E Watchdog",
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+ .identity = "PowerPC Book-E Watchdog",
};
-/*
- * booke_wdt_ioctl:
- */
-static int booke_wdt_ioctl (struct inode *inode, struct file *file,
+static int booke_wdt_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
u32 tmp = 0;
@@ -97,7 +90,7 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file,
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user ((struct watchdog_info __user *) arg, &ident,
+ if (copy_to_user((struct watchdog_info __user *)arg, &ident,
sizeof(struct watchdog_info)))
return -EFAULT;
case WDIOC_GETSTATUS:
@@ -132,33 +125,33 @@ static int booke_wdt_ioctl (struct inode *inode, struct file *file,
return 0;
}
-/*
- * booke_wdt_open:
- */
-static int booke_wdt_open (struct inode *inode, struct file *file)
+
+static int booke_wdt_open(struct inode *inode, struct file *file)
{
+ spin_lock(&booke_wdt_lock);
if (booke_wdt_enabled == 0) {
booke_wdt_enabled = 1;
- booke_wdt_enable();
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
- booke_wdt_period);
+ on_each_cpu(__booke_wdt_enable, NULL, 0, 0);
+ printk(KERN_INFO "PowerPC Book-E Watchdog Timer Enabled "
+ "(wdt_period=%d)\n", booke_wdt_period);
}
+ spin_unlock(&booke_wdt_lock);
return nonseekable_open(inode, file);
}
static const struct file_operations booke_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = booke_wdt_write,
- .ioctl = booke_wdt_ioctl,
- .open = booke_wdt_open,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = booke_wdt_write,
+ .ioctl = booke_wdt_ioctl,
+ .open = booke_wdt_open,
};
static struct miscdevice booke_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &booke_wdt_fops,
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &booke_wdt_fops,
};
static void __exit booke_wdt_exit(void)
@@ -166,28 +159,27 @@ static void __exit booke_wdt_exit(void)
misc_deregister(&booke_wdt_miscdev);
}
-/*
- * booke_wdt_init:
- */
static int __init booke_wdt_init(void)
{
int ret = 0;
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Loaded\n");
+ printk(KERN_INFO "PowerPC Book-E Watchdog Timer Loaded\n");
ident.firmware_version = cur_cpu_spec->pvr_value;
ret = misc_register(&booke_wdt_miscdev);
if (ret) {
- printk (KERN_CRIT "Cannot register miscdev on minor=%d (err=%d)\n",
+ printk(KERN_CRIT "Cannot register miscdev on minor=%d: %d\n",
WATCHDOG_MINOR, ret);
return ret;
}
+ spin_lock(&booke_wdt_lock);
if (booke_wdt_enabled == 1) {
- printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
- booke_wdt_period);
- booke_wdt_enable();
+ printk(KERN_INFO "PowerPC Book-E Watchdog Timer Enabled "
+ "(wdt_period=%d)\n", booke_wdt_period);
+ on_each_cpu(__booke_wdt_enable, NULL, 0, 0);
}
+ spin_unlock(&booke_wdt_lock);
return ret;
}
diff --git a/drivers/watchdog/geodewdt.c b/drivers/watchdog/geodewdt.c
new file mode 100644
index 000000000000..30d09cbbad94
--- /dev/null
+++ b/drivers/watchdog/geodewdt.c
@@ -0,0 +1,308 @@
+/* Watchdog timer for the Geode GX/LX with the CS5535/CS5536 companion chip
+ *
+ * Copyright (C) 2006-2007, Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/fs.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+
+#include <asm/uaccess.h>
+#include <asm/geode.h>
+
+#define GEODEWDT_HZ 500
+#define GEODEWDT_SCALE 6
+#define GEODEWDT_MAX_SECONDS 131
+
+#define WDT_FLAGS_OPEN 1
+#define WDT_FLAGS_ORPHAN 2
+
+#define DRV_NAME "geodewdt"
+#define WATCHDOG_NAME "Geode GX/LX WDT"
+#define WATCHDOG_TIMEOUT 60
+
+static int timeout = WATCHDOG_TIMEOUT;
+module_param(timeout, int, 0);
+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=131, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
+
+static int nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, int, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+static struct platform_device *geodewdt_platform_device;
+static unsigned long wdt_flags;
+static int wdt_timer;
+static int safe_close;
+
+static void geodewdt_ping(void)
+{
+ /* Stop the counter */
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP, 0);
+
+ /* Reset the counter */
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_COUNTER, 0);
+
+ /* Enable the counter */
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP, MFGPT_SETUP_CNTEN);
+}
+
+static void geodewdt_disable(void)
+{
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP, 0);
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_COUNTER, 0);
+}
+
+static int geodewdt_set_heartbeat(int val)
+{
+ if (val < 1 || val > GEODEWDT_MAX_SECONDS)
+ return -EINVAL;
+
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP, 0);
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_CMP2, val * GEODEWDT_HZ);
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_COUNTER, 0);
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP, MFGPT_SETUP_CNTEN);
+
+ timeout = val;
+ return 0;
+}
+
+static int
+geodewdt_open(struct inode *inode, struct file *file)
+{
+ if (test_and_set_bit(WDT_FLAGS_OPEN, &wdt_flags))
+ return -EBUSY;
+
+ if (!test_and_clear_bit(WDT_FLAGS_ORPHAN, &wdt_flags))
+ __module_get(THIS_MODULE);
+
+ geodewdt_ping();
+ return nonseekable_open(inode, file);
+}
+
+static int
+geodewdt_release(struct inode *inode, struct file *file)
+{
+ if (safe_close) {
+ geodewdt_disable();
+ module_put(THIS_MODULE);
+ }
+ else {
+ printk(KERN_CRIT "Unexpected close - watchdog is not stopping.\n");
+ geodewdt_ping();
+
+ set_bit(WDT_FLAGS_ORPHAN, &wdt_flags);
+ }
+
+ clear_bit(WDT_FLAGS_OPEN, &wdt_flags);
+ safe_close = 0;
+ return 0;
+}
+
+static ssize_t
+geodewdt_write(struct file *file, const char __user *data, size_t len,
+ loff_t *ppos)
+{
+ if(len) {
+ if (!nowayout) {
+ size_t i;
+ safe_close = 0;
+
+ for (i = 0; i != len; i++) {
+ char c;
+
+ if (get_user(c, data + i))
+ return -EFAULT;
+
+ if (c == 'V')
+ safe_close = 1;
+ }
+ }
+
+ geodewdt_ping();
+ }
+ return len;
+}
+
+static int
+geodewdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ int __user *p = argp;
+ int interval;
+
+ static struct watchdog_info ident = {
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING
+ | WDIOF_MAGICCLOSE,
+ .firmware_version = 1,
+ .identity = WATCHDOG_NAME,
+ };
+
+ switch(cmd) {
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident,
+ sizeof(ident)) ? -EFAULT : 0;
+ break;
+
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+
+ case WDIOC_KEEPALIVE:
+ geodewdt_ping();
+ return 0;
+
+ case WDIOC_SETTIMEOUT:
+ if (get_user(interval, p))
+ return -EFAULT;
+
+ if (geodewdt_set_heartbeat(interval))
+ return -EINVAL;
+
+/* Fall through */
+
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+
+ case WDIOC_SETOPTIONS:
+ {
+ int options, ret = -EINVAL;
+
+ if (get_user(options, p))
+ return -EFAULT;
+
+ if (options & WDIOS_DISABLECARD) {
+ geodewdt_disable();
+ ret = 0;
+ }
+
+ if (options & WDIOS_ENABLECARD) {
+ geodewdt_ping();
+ ret = 0;
+ }
+
+ return ret;
+ }
+ default:
+ return -ENOTTY;
+ }
+
+ return 0;
+}
+
+static const struct file_operations geodewdt_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = geodewdt_write,
+ .ioctl = geodewdt_ioctl,
+ .open = geodewdt_open,
+ .release = geodewdt_release,
+};
+
+static struct miscdevice geodewdt_miscdev = {
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &geodewdt_fops
+};
+
+static int __devinit
+geodewdt_probe(struct platform_device *dev)
+{
+ int ret, timer;
+
+ timer = geode_mfgpt_alloc_timer(MFGPT_TIMER_ANY, MFGPT_DOMAIN_WORKING);
+
+ if (timer == -1) {
+ printk(KERN_ERR "geodewdt: No timers were available\n");
+ return -ENODEV;
+ }
+
+ wdt_timer = timer;
+
+ /* Set up the timer */
+
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_SETUP,
+ GEODEWDT_SCALE | (3 << 8));
+
+ /* Set up comparator 2 to reset when the event fires */
+ geode_mfgpt_toggle_event(wdt_timer, MFGPT_CMP2, MFGPT_EVENT_RESET, 1);
+
+ /* Set up the initial timeout */
+
+ geode_mfgpt_write(wdt_timer, MFGPT_REG_CMP2,
+ timeout * GEODEWDT_HZ);
+
+ ret = misc_register(&geodewdt_miscdev);
+
+ return ret;
+}
+
+static int __devexit
+geodewdt_remove(struct platform_device *dev)
+{
+ misc_deregister(&geodewdt_miscdev);
+ return 0;
+}
+
+static void
+geodewdt_shutdown(struct platform_device *dev)
+{
+ geodewdt_disable();
+}
+
+static struct platform_driver geodewdt_driver = {
+ .probe = geodewdt_probe,
+ .remove = __devexit_p(geodewdt_remove),
+ .shutdown = geodewdt_shutdown,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = DRV_NAME,
+ },
+};
+
+static int __init
+geodewdt_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&geodewdt_driver);
+ if (ret)
+ return ret;
+
+ geodewdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+ if (IS_ERR(geodewdt_platform_device)) {
+ ret = PTR_ERR(geodewdt_platform_device);
+ goto err;
+ }
+
+ return 0;
+err:
+ platform_driver_unregister(&geodewdt_driver);
+ return ret;
+}
+
+static void __exit
+geodewdt_exit(void)
+{
+ platform_device_unregister(geodewdt_platform_device);
+ platform_driver_unregister(&geodewdt_driver);
+}
+
+module_init(geodewdt_init);
+module_exit(geodewdt_exit);
+
+MODULE_AUTHOR("Advanced Micro Devices, Inc");
+MODULE_DESCRIPTION("Geode GX/LX Watchdog Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 6483d1066b95..6a63535fc04d 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -418,23 +418,20 @@ static int hpwdt_pretimeout(struct notifier_block *nb, unsigned long ulReason,
static unsigned long rom_pl;
static int die_nmi_called;
- if (ulReason != DIE_NMI && ulReason != DIE_NMI_IPI)
- return NOTIFY_OK;
-
- spin_lock_irqsave(&rom_lock, rom_pl);
- if (!die_nmi_called)
- asminline_call(&cmn_regs, cru_rom_addr);
- die_nmi_called = 1;
- spin_unlock_irqrestore(&rom_lock, rom_pl);
- if (cmn_regs.u1.ral == 0) {
- printk(KERN_WARNING "hpwdt: An NMI occurred, "
- "but unable to determine source.\n");
- } else {
- panic("An NMI occurred, please see the Integrated "
- "Management Log for details.\n");
+ if (ulReason == DIE_NMI || ulReason == DIE_NMI_IPI) {
+ spin_lock_irqsave(&rom_lock, rom_pl);
+ if (!die_nmi_called)
+ asminline_call(&cmn_regs, cru_rom_addr);
+ die_nmi_called = 1;
+ spin_unlock_irqrestore(&rom_lock, rom_pl);
+ if (cmn_regs.u1.ral != 0) {
+ panic("An NMI occurred, please see the Integrated "
+ "Management Log for details.\n");
+ }
}
- return NOTIFY_STOP;
+ die_nmi_called = 0;
+ return NOTIFY_DONE;
}
/*
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index a0e6809e369f..95ba985bd341 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -41,9 +41,10 @@
* 82801HH (ICH8DH) : document number 313056-003, 313057-009,
* 82801HO (ICH8DO) : document number 313056-003, 313057-009,
* 82801HEM (ICH8M-E) : document number 313056-003, 313057-009,
- * 82801IB (ICH9) : document number 316972-001, 316973-001,
- * 82801IR (ICH9R) : document number 316972-001, 316973-001,
- * 82801IH (ICH9DH) : document number 316972-001, 316973-001,
+ * 82801IB (ICH9) : document number 316972-001, 316973-006,
+ * 82801IR (ICH9R) : document number 316972-001, 316973-006,
+ * 82801IH (ICH9DH) : document number 316972-001, 316973-006,
+ * 82801IO (ICH9DO) : document number 316972-001, 316973-006,
* 6300ESB (6300ESB) : document number 300641-003, 300884-010,
* 631xESB (631xESB) : document number 313082-001, 313075-005,
* 632xESB (632xESB) : document number 313082-001, 313075-005
@@ -55,8 +56,8 @@
/* Module and version information */
#define DRV_NAME "iTCO_wdt"
-#define DRV_VERSION "1.02"
-#define DRV_RELDATE "26-Jul-2007"
+#define DRV_VERSION "1.03"
+#define DRV_RELDATE "30-Apr-2008"
#define PFX DRV_NAME ": "
/* Includes */
@@ -104,6 +105,7 @@ enum iTCO_chipsets {
TCO_ICH9, /* ICH9 */
TCO_ICH9R, /* ICH9R */
TCO_ICH9DH, /* ICH9DH */
+ TCO_ICH9DO, /* ICH9DO */
TCO_631XESB, /* 631xESB/632xESB */
};
@@ -136,6 +138,7 @@ static struct {
{"ICH9", 2},
{"ICH9R", 2},
{"ICH9DH", 2},
+ {"ICH9DO", 2},
{"631xESB/632xESB", 2},
{NULL,0}
};
@@ -181,6 +184,7 @@ static struct pci_device_id iTCO_wdt_pci_tbl[] = {
{ ITCO_PCI_DEVICE(0x2918, TCO_ICH9 )},
{ ITCO_PCI_DEVICE(0x2916, TCO_ICH9R )},
{ ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_2, TCO_ICH9DH )},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH9_4, TCO_ICH9DO )},
{ ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB2_0, TCO_631XESB)},
{ ITCO_PCI_DEVICE(0x2671, TCO_631XESB)},
{ ITCO_PCI_DEVICE(0x2672, TCO_631XESB)},
diff --git a/drivers/watchdog/w83697hf_wdt.c b/drivers/watchdog/w83697hf_wdt.c
index c622a0e6c9ae..528b882420b6 100644
--- a/drivers/watchdog/w83697hf_wdt.c
+++ b/drivers/watchdog/w83697hf_wdt.c
@@ -44,6 +44,7 @@
#define WATCHDOG_NAME "w83697hf/hg WDT"
#define PFX WATCHDOG_NAME ": "
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
+#define WATCHDOG_EARLY_DISABLE 1 /* Disable until userland kicks in */
static unsigned long wdt_is_open;
static char expect_close;
@@ -56,12 +57,16 @@ MODULE_PARM_DESC(wdt_io, "w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)
static int timeout = WATCHDOG_TIMEOUT; /* in seconds */
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=255, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=255 (default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+static int early_disable = WATCHDOG_EARLY_DISABLE;
+module_param(early_disable, int, 0);
+MODULE_PARM_DESC(early_disable, "Watchdog gets disabled at boot time (default=" __MODULE_STRING(WATCHDOG_EARLY_DISABLE) ")");
+
/*
* Kernel methods.
*/
@@ -140,7 +145,7 @@ w83697hf_init(void)
w83697hf_deselect_wdt();
}
-static int
+static void
wdt_ping(void)
{
spin_lock(&io_lock);
@@ -150,10 +155,9 @@ wdt_ping(void)
w83697hf_deselect_wdt();
spin_unlock(&io_lock);
- return 0;
}
-static int
+static void
wdt_enable(void)
{
spin_lock(&io_lock);
@@ -164,10 +168,9 @@ wdt_enable(void)
w83697hf_deselect_wdt();
spin_unlock(&io_lock);
- return 0;
}
-static int
+static void
wdt_disable(void)
{
spin_lock(&io_lock);
@@ -178,7 +181,22 @@ wdt_disable(void)
w83697hf_deselect_wdt();
spin_unlock(&io_lock);
- return 0;
+}
+
+static unsigned char
+wdt_running(void)
+{
+ unsigned char t;
+
+ spin_lock(&io_lock);
+ w83697hf_select_wdt();
+
+ t = w83697hf_get_reg(0xF4); /* Read timer */
+
+ w83697hf_deselect_wdt();
+ spin_unlock(&io_lock);
+
+ return t;
}
static int
@@ -397,7 +415,11 @@ wdt_init(void)
}
w83697hf_init();
- wdt_disable(); /* Disable watchdog until first use */
+ if (early_disable) {
+ if (wdt_running())
+ printk (KERN_WARNING PFX "Stopping previously enabled watchdog until userland kicks in\n");
+ wdt_disable();
+ }
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);