#include <linux/types.h> /* For standard types (like size_t) */
#include <linux/errno.h> /* For the -ENODEV/... values */
#include <linux/kernel.h> /* For printk/panic/... */
-#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV
+ (WATCHDOG_MINOR) */
#include <linux/watchdog.h> /* For the watchdog specific items */
#include <linux/fs.h> /* For file operations */
#include <linux/ioport.h> /* For io-port access */
#include <linux/platform_device.h> /* For platform_driver framework */
#include <linux/init.h> /* For __init/__exit/... */
-#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
-#include <asm/io.h> /* For inb/outb/... */
+#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
+#include <linux/io.h> /* For inb/outb/... */
/* Module information */
#define DRV_NAME "acquirewdt"
#define PFX DRV_NAME ": "
#define WATCHDOG_NAME "Acquire WDT"
-#define WATCHDOG_HEARTBEAT 0 /* There is no way to see what the correct time-out period is */
+/* There is no way to see what the correct time-out period is */
+#define WATCHDOG_HEARTBEAT 0
/* internal variables */
-static struct platform_device *acq_platform_device; /* the watchdog platform device */
+/* the watchdog platform device */
+static struct platform_device *acq_platform_device;
static unsigned long acq_is_open;
static char expect_close;
/* module parameters */
-static int wdt_stop = 0x43; /* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_stop = 0x43;
module_param(wdt_stop, int, 0);
MODULE_PARM_DESC(wdt_stop, "Acquire WDT 'stop' io port (default 0x43)");
-static int wdt_start = 0x443; /* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_start = 0x443;
module_param(wdt_start, int, 0);
MODULE_PARM_DESC(wdt_start, "Acquire WDT 'start' io port (default 0x443)");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Watchdog Operations
* /dev/watchdog handling
*/
-static ssize_t acq_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t acq_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count) {
+ if (count) {
if (!nowayout) {
size_t i;
-
/* note: just in case someone wrote the magic character
* five months ago... */
expect_close = 0;
-
- /* scan to see whether or not we got the magic character */
+ /* scan to see whether or not we got the
+ magic character */
for (i = 0; i != count; i++) {
char c;
if (get_user(c, buf + i))
expect_close = 42;
}
}
-
- /* Well, anyhow someone wrote to us, we should return that favour */
+ /* Well, anyhow someone wrote to us, we should
+ return that favour */
acq_keepalive();
}
return count;
}
-static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long acq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int options, retval = -EINVAL;
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident =
- {
+ static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = WATCHDOG_NAME,
};
- switch(cmd)
- {
+ switch (cmd) {
case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
+ return put_user(0, p);
case WDIOC_KEEPALIVE:
- acq_keepalive();
- return 0;
+ acq_keepalive();
+ return 0;
case WDIOC_GETTIMEOUT:
return put_user(WATCHDOG_HEARTBEAT, p);
case WDIOC_SETOPTIONS:
{
- if (get_user(options, p))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD)
- {
- acq_stop();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD)
- {
- acq_keepalive();
- retval = 0;
- }
-
- return retval;
+ if (get_user(options, p))
+ return -EFAULT;
+ if (options & WDIOS_DISABLECARD) {
+ acq_stop();
+ retval = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ acq_keepalive();
+ retval = 0;
+ }
+ return retval;
}
-
default:
- return -ENOTTY;
+ return -ENOTTY;
}
}
if (expect_close == 42) {
acq_stop();
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
acq_keepalive();
}
clear_bit(0, &acq_is_open);
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = acq_write,
- .ioctl = acq_ioctl,
+ .unlocked_ioctl = acq_ioctl,
.open = acq_open,
.release = acq_close,
};
if (wdt_stop != wdt_start) {
if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
- wdt_stop);
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n", wdt_stop);
ret = -EIO;
goto out;
}
}
if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
+ printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_start);
ret = -EIO;
goto unreg_stop;
}
-
ret = misc_register(&acq_miscdev);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_regions;
}
-
- printk (KERN_INFO PFX "initialized. (nowayout=%d)\n",
- nowayout);
+ printk(KERN_INFO PFX "initialized. (nowayout=%d)\n", nowayout);
return 0;
-
unreg_regions:
release_region(wdt_start, 1);
unreg_stop:
static int __devexit acq_remove(struct platform_device *dev)
{
misc_deregister(&acq_miscdev);
- release_region(wdt_start,1);
- if(wdt_stop != wdt_start)
- release_region(wdt_stop,1);
+ release_region(wdt_start, 1);
+ if (wdt_stop != wdt_start)
+ release_region(wdt_stop, 1);
return 0;
}
{
int err;
- printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
+ printk(KERN_INFO
+ "WDT driver for Acquire single board computer initialising.\n");
err = platform_driver_register(&acquirewdt_driver);
if (err)
return err;
- acq_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+ acq_platform_device = platform_device_register_simple(DRV_NAME,
+ -1, NULL, 0);
if (IS_ERR(acq_platform_device)) {
err = PTR_ERR(acq_platform_device);
goto unreg_platform_driver;
}
-
return 0;
unreg_platform_driver:
static int timeout = WATCHDOG_TIMEOUT; /* in seconds */
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=63, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. 1<= timeout <=63, 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Watchdog Operations
*/
-static void
-advwdt_ping(void)
+static void advwdt_ping(void)
{
/* Write a watchdog value */
outb_p(timeout, wdt_start);
}
-static void
-advwdt_disable(void)
+static void advwdt_disable(void)
{
inb_p(wdt_stop);
}
-static int
-advwdt_set_heartbeat(int t)
+static int advwdt_set_heartbeat(int t)
{
- if ((t < 1) || (t > 63))
+ if (t < 1 || t > 63)
return -EINVAL;
-
timeout = t;
return 0;
}
* /dev/watchdog handling
*/
-static ssize_t
-advwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t advwdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
return count;
}
-static int
-advwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long advwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int new_timeout;
void __user *argp = (void __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident)))
- return -EFAULT;
- break;
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
+ return put_user(0, p);
case WDIOC_KEEPALIVE:
- advwdt_ping();
- break;
+ advwdt_ping();
+ break;
case WDIOC_SETTIMEOUT:
- if (get_user(new_timeout, p))
- return -EFAULT;
- if (advwdt_set_heartbeat(new_timeout))
- return -EINVAL;
- advwdt_ping();
- /* Fall */
-
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ if (advwdt_set_heartbeat(new_timeout))
+ return -EINVAL;
+ advwdt_ping();
+ /* Fall */
case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
+ return put_user(timeout, p);
case WDIOC_SETOPTIONS:
{
- int options, retval = -EINVAL;
-
- if (get_user(options, p))
- return -EFAULT;
+ int options, retval = -EINVAL;
- if (options & WDIOS_DISABLECARD) {
- advwdt_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- advwdt_ping();
- retval = 0;
- }
-
- return retval;
+ if (get_user(options, p))
+ return -EFAULT;
+ if (options & WDIOS_DISABLECARD) {
+ advwdt_disable();
+ retval = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ advwdt_ping();
+ retval = 0;
+ }
+ return retval;
}
-
default:
- return -ENOTTY;
+ return -ENOTTY;
}
return 0;
}
-static int
-advwdt_open(struct inode *inode, struct file *file)
+static int advwdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &advwdt_is_open))
return -EBUSY;
if (adv_expect_close == 42) {
advwdt_disable();
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
advwdt_ping();
}
clear_bit(0, &advwdt_is_open);
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = advwdt_write,
- .ioctl = advwdt_ioctl,
+ .unlocked_ioctl = advwdt_ioctl,
.open = advwdt_open,
.release = advwdt_close,
};
* Init & exit routines
*/
-static int __devinit
-advwdt_probe(struct platform_device *dev)
+static int __devinit advwdt_probe(struct platform_device *dev)
{
int ret;
if (wdt_stop != wdt_start) {
if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
- wdt_stop);
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n",
+ wdt_stop);
ret = -EIO;
goto out;
}
}
if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
- wdt_start);
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n",
+ wdt_start);
ret = -EIO;
goto unreg_stop;
}
/* Check that the heartbeat value is within it's range ; if not reset to the default */
if (advwdt_set_heartbeat(timeout)) {
advwdt_set_heartbeat(WATCHDOG_TIMEOUT);
- printk (KERN_INFO PFX "timeout value must be 1<=x<=63, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 1<=x<=63, using %d\n", timeout);
}
ret = misc_register(&advwdt_miscdev);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_regions;
}
-
- printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
+ printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
-
out:
return ret;
unreg_regions:
goto out;
}
-static int __devexit
-advwdt_remove(struct platform_device *dev)
+static int __devexit advwdt_remove(struct platform_device *dev)
{
misc_deregister(&advwdt_miscdev);
release_region(wdt_start,1);
return 0;
}
-static void
-advwdt_shutdown(struct platform_device *dev)
+static void advwdt_shutdown(struct platform_device *dev)
{
/* Turn the WDT off if we have a soft shutdown */
advwdt_disable();
},
};
-static int __init
-advwdt_init(void)
+static int __init advwdt_init(void)
{
int err;
if (err)
return err;
- advwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+ advwdt_platform_device = platform_device_register_simple(DRV_NAME,
+ -1, NULL, 0);
if (IS_ERR(advwdt_platform_device)) {
err = PTR_ERR(advwdt_platform_device);
goto unreg_platform_driver;
return err;
}
-static void __exit
-advwdt_exit(void)
+static void __exit advwdt_exit(void)
{
platform_device_unregister(advwdt_platform_device);
platform_driver_unregister(&advwdt_driver);
#include <linux/fs.h>
#include <linux/pci.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define WATCHDOG_NAME "ALi_M1535"
#define PFX WATCHDOG_NAME ": "
static unsigned long ali_is_open;
static char ali_expect_release;
static struct pci_dev *ali_pci;
-static u32 ali_timeout_bits; /* stores the computed timeout */
+static u32 ali_timeout_bits; /* stores the computed timeout */
static DEFINE_SPINLOCK(ali_lock); /* Guards the hardware */
/* module parameters */
static int timeout = WATCHDOG_TIMEOUT;
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (0<timeout<18000, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (0 < timeout < 18000, 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* ali_start - start watchdog countdown
static int ali_settimer(int t)
{
- if(t < 0)
+ if (t < 0)
return -EINVAL;
- else if(t < 60)
+ else if (t < 60)
ali_timeout_bits = t|(1<<6);
- else if(t < 3600)
+ else if (t < 3600)
ali_timeout_bits = (t/60)|(1<<7);
- else if(t < 18000)
+ else if (t < 18000)
ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
- else return -EINVAL;
+ else
+ return -EINVAL;
timeout = t;
return 0;
*/
static ssize_t ali_write(struct file *file, const char __user *data,
- size_t len, loff_t * ppos)
+ 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... */
+ /* note: just in case someone wrote the
+ magic character five months ago... */
ali_expect_release = 0;
- /* scan to see whether or not we got the magic character */
+ /* 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))
+ if (get_user(c, data+i))
return -EFAULT;
if (c == 'V')
ali_expect_release = 42;
/*
* ali_ioctl - handle watchdog ioctls
- * @inode: VFS inode
* @file: VFS file pointer
* @cmd: ioctl number
* @arg: arguments to the ioctl
* we want an extension to enable irq ack monitoring and the like
*/
-static int ali_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
};
switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident,
- sizeof (ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_KEEPALIVE:
- ali_keepalive();
- return 0;
-
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if (get_user (new_options, p))
- return -EFAULT;
-
- if (new_options & WDIOS_DISABLECARD) {
- ali_stop();
- retval = 0;
- }
-
- if (new_options & WDIOS_ENABLECARD) {
- ali_start();
- retval = 0;
- }
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
- return retval;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ ali_keepalive();
+ return 0;
+ case WDIOC_SETOPTIONS:
+ {
+ int new_options, retval = -EINVAL;
+
+ if (get_user(new_options, p))
+ return -EFAULT;
+ if (new_options & WDIOS_DISABLECARD) {
+ ali_stop();
+ retval = 0;
}
-
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
-
- if (get_user(new_timeout, p))
- return -EFAULT;
-
- if (ali_settimer(new_timeout))
- return -EINVAL;
-
- ali_keepalive();
- /* Fall */
+ if (new_options & WDIOS_ENABLECARD) {
+ ali_start();
+ retval = 0;
}
-
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
- default:
- return -ENOTTY;
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ if (ali_settimer(new_timeout))
+ return -EINVAL;
+ ali_keepalive();
+ /* Fall */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+ default:
+ return -ENOTTY;
}
}
/*
* Shut off the timer.
*/
- if (ali_expect_release == 42) {
+ if (ali_expect_release == 42)
ali_stop();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
ali_keepalive();
}
clear_bit(0, &ali_is_open);
*/
-static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int ali_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
- if (code==SYS_DOWN || code==SYS_HALT) {
- /* Turn the WDT off */
- ali_stop();
- }
-
+ if (code == SYS_DOWN || code == SYS_HALT)
+ ali_stop(); /* Turn the WDT off */
return NOTIFY_DONE;
}
/* Check for the a 7101 PMU */
pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
- if(pdev == NULL)
+ if (pdev == NULL)
return -ENODEV;
- if(pci_enable_device(pdev)) {
+ if (pci_enable_device(pdev)) {
pci_dev_put(pdev);
return -EIO;
}
*/
pci_read_config_dword(pdev, 0xCC, &wdog);
- wdog &= ~0x3F; /* Timer bits */
- wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24)); /* Issued events */
- wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)); /* No monitor bits */
+ /* Timer bits */
+ wdog &= ~0x3F;
+ /* Issued events */
+ wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));
+ /* No monitor bits */
+ wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));
pci_write_config_dword(pdev, 0xCC, wdog);
*/
static const struct file_operations ali_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = ali_write,
- .ioctl = ali_ioctl,
- .open = ali_open,
- .release = ali_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = ali_write,
+ .unlocked_ioctl = ali_ioctl,
+ .open = ali_open,
+ .release = ali_release,
};
static struct miscdevice ali_miscdev = {
int ret;
/* Check whether or not the hardware watchdog is there */
- if (ali_find_watchdog() != 0) {
+ if (ali_find_watchdog() != 0)
return -ENODEV;
- }
- /* Check that the timeout value is within it's range ; if not reset to the default */
+ /* Check that the timeout value is within it's range;
+ if not reset to the default */
if (timeout < 1 || timeout >= 18000) {
timeout = WATCHDOG_TIMEOUT;
- printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 0 < timeout < 18000, using %d\n",
+ timeout);
}
/* Calculate the watchdog's timeout */
ret = register_reboot_notifier(&ali_notifier);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
goto out;
}
ret = misc_register(&ali_miscdev);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
#include <linux/fs.h>
#include <linux/pci.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/system.h>
#define OUR_NAME "alim7101_wdt"
*/
#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
-static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+static int timeout = WATCHDOG_TIMEOUT;
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=3600, default="
+ __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
-static int use_gpio = 0; /* Use the pic (for a1d revision alim7101) */
+static int use_gpio; /* Use the pic (for a1d revision alim7101) */
module_param(use_gpio, int, 0);
-MODULE_PARM_DESC(use_gpio, "Use the gpio watchdog. (required by old cobalt boards)");
+MODULE_PARM_DESC(use_gpio,
+ "Use the gpio watchdog (required by old cobalt boards).");
static void wdt_timer_ping(unsigned long);
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 1);
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Whack the dog
/* If we got a heartbeat pulse within the WDT_US_INTERVAL
* we agree to ping the WDT
*/
- char tmp;
+ char tmp;
- if(time_before(jiffies, next_heartbeat))
- {
+ if (time_before(jiffies, next_heartbeat)) {
/* Ping the WDT (this is actually a disarm/arm sequence) */
pci_read_config_byte(alim7101_pmu, 0x92, &tmp);
- pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
- pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp | ALI_WDT_ARM));
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_WDT, (tmp | ALI_WDT_ARM));
if (use_gpio) {
- pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
- pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp
- | 0x20);
- pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp
- & ~0x20);
+ pci_read_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, &tmp);
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, tmp | 0x20);
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, tmp & ~0x20);
}
} else {
- printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
+ printk(KERN_WARNING PFX
+ "Heartbeat lost! Will not ping the watchdog\n");
}
/* Re-set the timer interval */
mod_timer(&timer, jiffies + WDT_INTERVAL);
pci_read_config_byte(alim7101_pmu, ALI_7101_WDT, &tmp);
if (writeval == WDT_ENABLE) {
- pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp | ALI_WDT_ARM));
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_WDT, (tmp | ALI_WDT_ARM));
if (use_gpio) {
- pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
- pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp & ~0x20);
+ pci_read_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, &tmp);
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, tmp & ~0x20);
}
} else {
- pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
if (use_gpio) {
- pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
- pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp | 0x20);
+ pci_read_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, &tmp);
+ pci_write_config_byte(alim7101_pmu,
+ ALI_7101_GPIO_O, tmp | 0x20);
}
}
}
* /dev/watchdog handling
*/
-static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count) {
+ if (count) {
if (!nowayout) {
size_t ofs;
return count;
}
-static int fop_open(struct inode * inode, struct file * file)
+static int fop_open(struct inode *inode, struct file *file)
{
/* Just in case we're already talking to someone... */
- if(test_and_set_bit(0, &wdt_is_open))
+ if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
/* Good, fire up the show */
wdt_startup();
return nonseekable_open(inode, file);
}
-static int fop_close(struct inode * inode, struct file * file)
+static int fop_close(struct inode *inode, struct file *file)
{
- if(wdt_expect_close == 42)
+ if (wdt_expect_close == 42)
wdt_turnoff();
else {
/* wim: shouldn't there be a: del_timer(&timer); */
- printk(KERN_CRIT PFX "device file closed unexpectedly. Will not stop the WDT!\n");
+ printk(KERN_CRIT PFX
+ "device file closed unexpectedly. Will not stop the WDT!\n");
}
clear_bit(0, &wdt_is_open);
wdt_expect_close = 0;
return 0;
}
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident =
- {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "ALiM7101",
};
- switch(cmd)
+ switch (cmd) {
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ wdt_keepalive();
+ return 0;
+ case WDIOC_SETOPTIONS:
{
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- wdt_keepalive();
- return 0;
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if(get_user(new_options, p))
- return -EFAULT;
-
- if(new_options & WDIOS_DISABLECARD) {
- wdt_turnoff();
- retval = 0;
- }
-
- if(new_options & WDIOS_ENABLECARD) {
- wdt_startup();
- retval = 0;
- }
+ int new_options, retval = -EINVAL;
- return retval;
+ if (get_user(new_options, p))
+ return -EFAULT;
+ if (new_options & WDIOS_DISABLECARD) {
+ wdt_turnoff();
+ retval = 0;
}
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
-
- if(get_user(new_timeout, p))
- return -EFAULT;
-
- if(new_timeout < 1 || new_timeout > 3600) /* arbitrary upper limit */
- return -EINVAL;
-
- timeout = new_timeout;
- wdt_keepalive();
- /* Fall through */
+ if (new_options & WDIOS_ENABLECARD) {
+ wdt_startup();
+ retval = 0;
}
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
- default:
- return -ENOTTY;
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
+
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ /* arbitrary upper limit */
+ if (new_timeout < 1 || new_timeout > 3600)
+ return -EINVAL;
+ timeout = new_timeout;
+ wdt_keepalive();
+ /* Fall through */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+ default:
+ return -ENOTTY;
}
}
static const struct file_operations wdt_fops = {
- .owner= THIS_MODULE,
- .llseek= no_llseek,
- .write= fop_write,
- .open= fop_open,
- .release= fop_close,
- .ioctl= fop_ioctl,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = fop_write,
+ .open = fop_open,
+ .release = fop_close,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
- .minor=WATCHDOG_MINOR,
- .name="watchdog",
- .fops=&wdt_fops,
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &wdt_fops,
};
/*
* Notifier for system down
*/
-static int wdt_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int wdt_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
- if (code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
- if (code==SYS_RESTART) {
+ if (code == SYS_RESTART) {
/*
- * Cobalt devices have no way of rebooting themselves other than
- * getting the watchdog to pull reset, so we restart the watchdog on
- * reboot with no heartbeat
+ * Cobalt devices have no way of rebooting themselves other
+ * than getting the watchdog to pull reset, so we restart the
+ * watchdog on reboot with no heartbeat
*/
wdt_change(WDT_ENABLE);
printk(KERN_INFO PFX "Watchdog timer is now enabled with no heartbeat - should reboot in ~1 second.\n");
* turn the timebomb registers off.
*/
-static struct notifier_block wdt_notifier=
-{
+static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
ali1543_south = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
NULL);
if (!ali1543_south) {
- printk(KERN_INFO PFX "ALi 1543 South-Bridge not present - WDT not set\n");
+ printk(KERN_INFO PFX
+ "ALi 1543 South-Bridge not present - WDT not set\n");
goto err_out;
}
pci_read_config_byte(ali1543_south, 0x5e, &tmp);
if (!use_gpio) {
printk(KERN_INFO PFX "Detected old alim7101 revision 'a1d'. If this is a cobalt board, set the 'use_gpio' module parameter.\n");
goto err_out;
- }
+ }
nowayout = 1;
} else if ((tmp & 0x1e) != 0x12 && (tmp & 0x1e) != 0x00) {
printk(KERN_INFO PFX "ALi 1543 South-Bridge does not have the correct revision number (???1001?) - WDT not set\n");
goto err_out;
}
- if(timeout < 1 || timeout > 3600) /* arbitrary upper limit */
- {
+ if (timeout < 1 || timeout > 3600) {
+ /* arbitrary upper limit */
timeout = WATCHDOG_TIMEOUT;
- printk(KERN_INFO PFX "timeout value must be 1<=x<=3600, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= x <= 3600, using %d\n",
+ timeout);
}
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out;
}
goto err_out_reboot;
}
- if (nowayout) {
+ if (nowayout)
__module_get(THIS_MODULE);
- }
printk(KERN_INFO PFX "WDT driver for ALi M7101 initialised. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
/*
* Handle commands from user-space.
*/
-static int at32_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long at32_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int ret = -ENOTTY;
int time;
static const struct file_operations at32_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .ioctl = at32_wdt_ioctl,
+ .unlocked_ioctl = at32_wdt_ioctl,
.open = at32_wdt_open,
.release = at32_wdt_close,
.write = at32_wdt_write,
wdt = NULL;
platform_set_drvdata(pdev, NULL);
}
-
return 0;
}
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/watchdog.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/arch/at91_st.h>
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(wdt_time, int, 0);
-MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="__MODULE_STRING(WDT_DEFAULT_TIME) ")");
+MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
+ __MODULE_STRING(WDT_DEFAULT_TIME) ")");
#ifdef CONFIG_WATCHDOG_NOWAYOUT
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#endif
/*
* Disable the watchdog.
*/
-static void inline at91_wdt_stop(void)
+static inline void at91_wdt_stop(void)
{
at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN);
}
/*
* Enable and reset the watchdog.
*/
-static void inline at91_wdt_start(void)
+static inline void at91_wdt_start(void)
{
- at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN | (((65536 * wdt_time) >> 8) & AT91_ST_WDV));
+ at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
+ (((65536 * wdt_time) >> 8) & AT91_ST_WDV));
at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
}
/*
* Reload the watchdog timer. (ie, pat the watchdog)
*/
-static void inline at91_wdt_reload(void)
+static inline void at91_wdt_reload(void)
{
at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
}
*/
static int at91_wdt_close(struct inode *inode, struct file *file)
{
+ /* Disable the watchdog when file is closed */
if (!nowayout)
- at91_wdt_stop(); /* Disable the watchdog when file is closed */
+ at91_wdt_stop();
clear_bit(0, &at91wdt_busy);
return 0;
if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
return -EINVAL;
- /* Set new watchdog time. It will be used when at91_wdt_start() is called. */
+ /* Set new watchdog time. It will be used when
+ at91_wdt_start() is called. */
wdt_time = new_time;
return 0;
}
/*
* Handle commands from user-space.
*/
-static int at91_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long at91_wdt_ioct(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_value;
- switch(cmd) {
- case WDIOC_KEEPALIVE:
- at91_wdt_reload(); /* pat the watchdog */
- return 0;
-
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &at91_wdt_info, sizeof(at91_wdt_info)) ? -EFAULT : 0;
-
- case WDIOC_SETTIMEOUT:
- if (get_user(new_value, p))
- return -EFAULT;
-
- if (at91_wdt_settimeout(new_value))
- return -EINVAL;
-
- /* Enable new time value */
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ at91_wdt_reload(); /* pat the watchdog */
+ return 0;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &at91_wdt_info,
+ sizeof(at91_wdt_info)) ? -EFAULT : 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_value, p))
+ return -EFAULT;
+ if (at91_wdt_settimeout(new_value))
+ return -EINVAL;
+ /* Enable new time value */
+ at91_wdt_start();
+ /* Return current value */
+ return put_user(wdt_time, p);
+ case WDIOC_GETTIMEOUT:
+ return put_user(wdt_time, p);
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_SETOPTIONS:
+ if (get_user(new_value, p))
+ return -EFAULT;
+ if (new_value & WDIOS_DISABLECARD)
+ at91_wdt_stop();
+ if (new_value & WDIOS_ENABLECARD)
at91_wdt_start();
-
- /* Return current value */
- return put_user(wdt_time, p);
-
- case WDIOC_GETTIMEOUT:
- return put_user(wdt_time, p);
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_SETOPTIONS:
- if (get_user(new_value, p))
- return -EFAULT;
-
- if (new_value & WDIOS_DISABLECARD)
- at91_wdt_stop();
- if (new_value & WDIOS_ENABLECARD)
- at91_wdt_start();
- return 0;
-
- default:
- return -ENOTTY;
+ return 0;
+ default:
+ return -ENOTTY;
}
}
/*
* Pat the watchdog whenever device is written to.
*/
-static ssize_t at91_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t at91_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
at91_wdt_reload(); /* pat the watchdog */
return len;
static const struct file_operations at91wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .ioctl = at91_wdt_ioctl,
+ .unlocked_ioctl = at91_wdt_ioctl,
.open = at91_wdt_open,
.release = at91_wdt_close,
.write = at91_wdt_write,
if (res)
return res;
- printk("AT91 Watchdog Timer enabled (%d seconds%s)\n", wdt_time, nowayout ? ", nowayout" : "");
+ printk(KERN_INFO "AT91 Watchdog Timer enabled (%d seconds%s)\n",
+ wdt_time, nowayout ? ", nowayout" : "");
return 0;
}
static int __init at91_wdt_init(void)
{
- /* Check that the heartbeat value is within range; if not reset to the default */
+ /* Check that the heartbeat value is within range;
+ if not reset to the default */
if (at91_wdt_settimeout(wdt_time)) {
at91_wdt_settimeout(WDT_DEFAULT_TIME);
pr_info("at91_wdt: wdt_time value must be 1 <= wdt_time <= 256, using %d\n", wdt_time);
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/blackfin.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args)
#define stampit() stamp("here i am")
int run = bfin_wdt_running();
bfin_wdt_stop();
bfin_write_WDOG_CNT(cnt);
- if (run) bfin_wdt_start();
+ if (run)
+ bfin_wdt_start();
}
spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
{
stampit();
- if (expect_close == 42) {
+ if (expect_close == 42)
bfin_wdt_stop();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
bfin_wdt_keepalive();
}
-
expect_close = 0;
clear_bit(0, &open_check);
-
return 0;
}
* Pings the watchdog on write.
*/
static ssize_t bfin_wdt_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos)
+ size_t len, loff_t *ppos)
{
stampit();
/**
* bfin_wdt_ioctl - Query Device
- * @inode: inode of device
* @file: file handle of device
* @cmd: watchdog command
* @arg: argument
* Query basic information from the device or ping it, as outlined by the
* watchdog API.
*/
-static int bfin_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long bfin_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
stampit();
switch (cmd) {
- default:
- return -ENOTTY;
-
- case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &bfin_wdt_info, sizeof(bfin_wdt_info)))
- return -EFAULT;
- else
- return 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(!!(_bfin_swrst & SWRST_RESET_WDOG), p);
-
- case WDIOC_KEEPALIVE:
- bfin_wdt_keepalive();
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &bfin_wdt_info, sizeof(bfin_wdt_info)))
+ return -EFAULT;
+ else
return 0;
-
- case WDIOC_SETTIMEOUT: {
- int new_timeout;
-
- if (get_user(new_timeout, p))
- return -EFAULT;
-
- if (bfin_wdt_set_timeout(new_timeout))
- return -EINVAL;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(!!(_bfin_swrst & SWRST_RESET_WDOG), p);
+ case WDIOC_KEEPALIVE:
+ bfin_wdt_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT: {
+ int new_timeout;
+
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ if (bfin_wdt_set_timeout(new_timeout))
+ return -EINVAL;
+ }
+ /* Fall */
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
+ case WDIOC_SETOPTIONS: {
+ unsigned long flags;
+ int options, ret = -EINVAL;
+
+ if (get_user(options, p))
+ return -EFAULT;
+
+ spin_lock_irqsave(&bfin_wdt_spinlock, flags);
+ if (options & WDIOS_DISABLECARD) {
+ bfin_wdt_stop();
+ ret = 0;
}
- /* Fall */
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
- case WDIOC_SETOPTIONS: {
- unsigned long flags;
- int options, ret = -EINVAL;
-
- if (get_user(options, p))
- return -EFAULT;
-
- spin_lock_irqsave(&bfin_wdt_spinlock, flags);
-
- if (options & WDIOS_DISABLECARD) {
- bfin_wdt_stop();
- ret = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- bfin_wdt_start();
- ret = 0;
- }
-
- spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
-
- return ret;
+ if (options & WDIOS_ENABLECARD) {
+ bfin_wdt_start();
+ ret = 0;
}
+ spin_unlock_irqrestore(&bfin_wdt_spinlock, flags);
+ return ret;
+ }
+ default:
+ return -ENOTTY;
}
}
* Handles specific events, such as turning off the watchdog during a
* shutdown event.
*/
-static int bfin_wdt_notify_sys(struct notifier_block *this, unsigned long code,
- void *unused)
+static int bfin_wdt_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
stampit();
#endif
static const struct file_operations bfin_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = bfin_wdt_write,
- .ioctl = bfin_wdt_ioctl,
- .open = bfin_wdt_open,
- .release = bfin_wdt_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = bfin_wdt_write,
+ .unlocked_ioctl = bfin_wdt_ioctl,
+ .open = bfin_wdt_open,
+ .release = bfin_wdt_release,
};
static struct miscdevice bfin_wdt_miscdev = {
static struct watchdog_info bfin_wdt_info = {
.identity = "Blackfin Watchdog",
.options = WDIOF_SETTIMEOUT |
- WDIOF_KEEPALIVEPING |
- WDIOF_MAGICCLOSE,
+ WDIOF_KEEPALIVEPING |
+ WDIOF_MAGICCLOSE,
};
static struct notifier_block bfin_wdt_notifier = {
ret = register_reboot_notifier(&bfin_wdt_notifier);
if (ret) {
- pr_devinit(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n", 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);
+ 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;
}
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(timeout, uint, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=((2^32)/SCLK), default="
+ __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#include <linux/miscdevice.h>
#include <linux/notifier.h>
#include <linux/watchdog.h>
+#include <linux/uaccess.h>
#include <asm/reg_booke.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* If the kernel parameter wdt=1, the watchdog will be enabled at boot.
*/
#ifdef CONFIG_FSL_BOOKE
-#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */
+#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz,reset=~40sec */
#else
#define WDT_PERIOD_DEFAULT 3 /* Refer to the PPC40x and PPC4xx manuals */
#endif /* for timing information */
.identity = "PowerPC Book-E Watchdog",
};
-static int booke_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long booke_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
u32 tmp = 0;
u32 __user *p = (u32 __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user((struct watchdog_info __user *)arg, &ident,
- sizeof(struct watchdog_info)))
+ if (copy_to_user(arg, &ident, sizeof(struct watchdog_info)))
return -EFAULT;
case WDIOC_GETSTATUS:
return put_user(ident.options, p);
case WDIOC_SETTIMEOUT:
if (get_user(booke_wdt_period, p))
return -EFAULT;
- mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(booke_wdt_period));
+ mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP(0)) |
+ WDTP(booke_wdt_period));
return 0;
case WDIOC_GETTIMEOUT:
return put_user(booke_wdt_period, p);
if (booke_wdt_enabled == 0) {
booke_wdt_enabled = 1;
on_each_cpu(__booke_wdt_enable, NULL, 0);
- printk(KERN_INFO "PowerPC Book-E Watchdog Timer Enabled "
- "(wdt_period=%d)\n", booke_wdt_period);
+ printk(KERN_INFO
+ "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
+ booke_wdt_period);
}
spin_unlock(&booke_wdt_lock);
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = booke_wdt_write,
- .ioctl = booke_wdt_ioctl,
+ .unlocked_ioctl = booke_wdt_ioctl,
.open = booke_wdt_open,
};
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);
+ printk(KERN_INFO
+ "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n",
+ booke_wdt_period);
on_each_cpu(__booke_wdt_enable, NULL, 0);
}
spin_unlock(&booke_wdt_lock);
#include <linux/timer.h>
#include <linux/completion.h>
#include <linux/jiffies.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <linux/watchdog.h>
/* adjustable parameters */
-static int verbose = 0;
+static int verbose;
static int port = 0x91;
static int ticks = 10000;
+static spinlock_t cpu5wdt_lock;
#define PFX "cpu5wdt: "
static void cpu5wdt_trigger(unsigned long unused)
{
- if ( verbose > 2 )
+ if (verbose > 2)
printk(KERN_DEBUG PFX "trigger at %i ticks\n", ticks);
- if( cpu5wdt_device.running )
+ if (cpu5wdt_device.running)
ticks--;
+ spin_lock(&cpu5wdt_lock);
/* keep watchdog alive */
outb(1, port + CPU5WDT_TRIGGER_REG);
/* ticks doesn't matter anyway */
complete(&cpu5wdt_device.stop);
}
+ spin_unlock(&cpu5wdt_lock);
}
{
ticks = cpu5wdt_device.default_ticks;
- if ( verbose )
+ if (verbose)
printk(KERN_DEBUG PFX "reset (%i ticks)\n", (int) ticks);
}
static void cpu5wdt_start(void)
{
- if ( !cpu5wdt_device.queue ) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&cpu5wdt_lock, flags);
+ if (!cpu5wdt_device.queue) {
cpu5wdt_device.queue = 1;
outb(0, port + CPU5WDT_TIME_A_REG);
outb(0, port + CPU5WDT_TIME_B_REG);
}
/* if process dies, counter is not decremented */
cpu5wdt_device.running++;
+ spin_unlock_irqrestore(&cpu5wdt_lock, flags);
}
static int cpu5wdt_stop(void)
{
- if ( cpu5wdt_device.running )
- cpu5wdt_device.running = 0;
+ unsigned long flags;
+ spin_lock_irqsave(&cpu5wdt_lock, flags);
+ if (cpu5wdt_device.running)
+ cpu5wdt_device.running = 0;
ticks = cpu5wdt_device.default_ticks;
-
- if ( verbose )
+ spin_unlock_irqrestore(&cpu5wdt_lock, flags);
+ if (verbose)
printk(KERN_CRIT PFX "stop not possible\n");
-
return -EIO;
}
static int cpu5wdt_open(struct inode *inode, struct file *file)
{
- if ( test_and_set_bit(0, &cpu5wdt_device.inuse) )
+ if (test_and_set_bit(0, &cpu5wdt_device.inuse))
return -EBUSY;
-
return nonseekable_open(inode, file);
}
return 0;
}
-static int cpu5wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long cpu5wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
+ int __user *p = argp;
unsigned int value;
- static struct watchdog_info ident =
- {
+ static struct watchdog_info ident = {
.options = WDIOF_CARDRESET,
.identity = "CPU5 WDT",
};
- switch(cmd) {
- case WDIOC_KEEPALIVE:
- cpu5wdt_reset();
- break;
- case WDIOC_GETSTATUS:
- value = inb(port + CPU5WDT_STATUS_REG);
- value = (value >> 2) & 1;
- if ( copy_to_user(argp, &value, sizeof(int)) )
- return -EFAULT;
- break;
- case WDIOC_GETBOOTSTATUS:
- if ( copy_to_user(argp, &value, sizeof(int)) )
- return -EFAULT;
- break;
- case WDIOC_GETSUPPORT:
- if ( copy_to_user(argp, &ident, sizeof(ident)) )
- return -EFAULT;
- break;
- case WDIOC_SETOPTIONS:
- if ( copy_from_user(&value, argp, sizeof(int)) )
- return -EFAULT;
- switch(value) {
- case WDIOS_ENABLECARD:
- cpu5wdt_start();
- break;
- case WDIOS_DISABLECARD:
- return cpu5wdt_stop();
- default:
- return -EINVAL;
- }
- break;
- default:
- return -ENOTTY;
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ cpu5wdt_reset();
+ break;
+ case WDIOC_GETSTATUS:
+ value = inb(port + CPU5WDT_STATUS_REG);
+ value = (value >> 2) & 1;
+ return put_user(value, p);
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
+ case WDIOC_SETOPTIONS:
+ if (get_user(value, p))
+ return -EFAULT;
+ if (value & WDIOS_ENABLECARD)
+ cpu5wdt_start();
+ if (value & WDIOS_DISABLECARD)
+ cpu5wdt_stop();
+ break;
+ default:
+ return -ENOTTY;
}
return 0;
}
-static ssize_t cpu5wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t cpu5wdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
- if ( !count )
+ if (!count)
return -EIO;
-
cpu5wdt_reset();
-
return count;
}
static const struct file_operations cpu5wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .ioctl = cpu5wdt_ioctl,
+ .unlocked_ioctl = cpu5wdt_ioctl,
.open = cpu5wdt_open,
.write = cpu5wdt_write,
.release = cpu5wdt_release,
unsigned int val;
int err;
- if ( verbose )
- printk(KERN_DEBUG PFX "port=0x%x, verbose=%i\n", port, verbose);
+ if (verbose)
+ printk(KERN_DEBUG PFX
+ "port=0x%x, verbose=%i\n", port, verbose);
- if ( !request_region(port, CPU5WDT_EXTENT, PFX) ) {
+ init_completion(&cpu5wdt_device.stop);
+ spin_lock_init(&cpu5wdt_lock);
+ cpu5wdt_device.queue = 0;
+ setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
+ cpu5wdt_device.default_ticks = ticks;
+
+ if (!request_region(port, CPU5WDT_EXTENT, PFX)) {
printk(KERN_ERR PFX "request_region failed\n");
err = -EBUSY;
goto no_port;
}
- if ( (err = misc_register(&cpu5wdt_misc)) < 0 ) {
- printk(KERN_ERR PFX "misc_register failed\n");
- goto no_misc;
- }
-
/* watchdog reboot? */
val = inb(port + CPU5WDT_STATUS_REG);
val = (val >> 2) & 1;
- if ( !val )
+ if (!val)
printk(KERN_INFO PFX "sorry, was my fault\n");
- init_completion(&cpu5wdt_device.stop);
- cpu5wdt_device.queue = 0;
-
- clear_bit(0, &cpu5wdt_device.inuse);
-
- setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
+ err = misc_register(&cpu5wdt_misc);
+ if (err < 0) {
+ printk(KERN_ERR PFX "misc_register failed\n");
+ goto no_misc;
+ }
- cpu5wdt_device.default_ticks = ticks;
printk(KERN_INFO PFX "init success\n");
-
return 0;
no_misc:
static void __devexit cpu5wdt_exit(void)
{
- if ( cpu5wdt_device.queue ) {
+ if (cpu5wdt_device.queue) {
cpu5wdt_device.queue = 0;
wait_for_completion(&cpu5wdt_device.stop);
}
#include <linux/bitops.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#include <asm/hardware.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
#define MODULE_NAME "DAVINCI-WDT: "
.identity = "DaVinci Watchdog",
};
-static int
-davinci_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long davinci_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int ret = -ENOTTY;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = davinci_wdt_write,
- .ioctl = davinci_wdt_ioctl,
+ .unlocked_ioctl = davinci_wdt_ioctl,
.open = davinci_wdt_open,
.release = davinci_wdt_release,
};
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/timer.h>
+#include <linux/uaccess.h>
#include <asm/hardware.h>
-#include <asm/uaccess.h>
#define WDT_VERSION "0.3"
#define PFX "ep93xx_wdt: "
.identity = "EP93xx Watchdog",
};
-static int
-ep93xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long ep93xx_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int ret = -ENOTTY;
if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
wdt_shutdown();
else
- printk(KERN_CRIT PFX "Device closed unexpectedly - "
- "timer will not stop\n");
+ printk(KERN_CRIT PFX
+ "Device closed unexpectedly - timer will not stop\n");
clear_bit(WDT_IN_USE, &wdt_status);
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
static const struct file_operations ep93xx_wdt_fops = {
.owner = THIS_MODULE,
.write = ep93xx_wdt_write,
- .ioctl = ep93xx_wdt_ioctl,
+ .unlocked_ioctl = ep93xx_wdt_ioctl,
.open = ep93xx_wdt_open,
.release = ep93xx_wdt_release,
};
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=3600, default="
+ __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
MODULE_AUTHOR("Ray Lehtiniemi <rayl@mail.com>,"
"Alessandro Zummo <a.zummo@towertech.it>");
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
static unsigned long eurwdt_is_open;
static int eurwdt_timeout;
static char eur_expect_close;
+static spinlock_t eurwdt_lock;
/*
* You must set these - there is no sane way to probe for this board.
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Some symbolic names
{
eurwdt_disable_timer();
eurwdt_write_reg(WDT_CTRL_REG, 0x01); /* activate the WDT */
- eurwdt_write_reg(WDT_OUTPIN_CFG, !strcmp("int", ev) ? WDT_EVENT_INT : WDT_EVENT_REBOOT);
+ eurwdt_write_reg(WDT_OUTPIN_CFG,
+ !strcmp("int", ev) ? WDT_EVENT_INT : WDT_EVENT_REBOOT);
/* Setting interrupt line */
if (irq == 2 || irq > 15 || irq < 0) {
for (i = 0; i != count; i++) {
char c;
- if(get_user(c, buf+i))
+ if (get_user(c, buf+i))
return -EFAULT;
if (c == 'V')
eur_expect_close = 42;
}
}
+ spin_lock(&eurwdt_lock);
eurwdt_ping(); /* the default timeout */
+ spin_unlock(&eurwdt_lock);
}
-
return count;
}
/**
* eurwdt_ioctl:
- * @inode: inode of the device
* @file: file handle to the device
* @cmd: watchdog command
* @arg: argument pointer
* according to their available features.
*/
-static int eurwdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long eurwdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "WDT Eurotech CPU-1220/1410",
};
int time;
int options, retval = -EINVAL;
- switch(cmd) {
+ switch (cmd) {
default:
return -ENOTTY;
return put_user(0, p);
case WDIOC_KEEPALIVE:
+ spin_lock(&eurwdt_lock);
eurwdt_ping();
+ spin_unlock(&eurwdt_lock);
return 0;
case WDIOC_SETTIMEOUT:
if (time < 0 || time > 255)
return -EINVAL;
+ spin_lock(&eurwdt_lock);
eurwdt_timeout = time;
eurwdt_set_timeout(time);
+ spin_unlock(&eurwdt_lock);
/* Fall */
case WDIOC_GETTIMEOUT:
case WDIOC_SETOPTIONS:
if (get_user(options, p))
return -EFAULT;
+ spin_lock(&eurwdt_lock);
if (options & WDIOS_DISABLECARD) {
eurwdt_disable_timer();
retval = 0;
eurwdt_ping();
retval = 0;
}
+ spin_unlock(&eurwdt_lock);
return retval;
}
}
static int eurwdt_release(struct inode *inode, struct file *file)
{
- if (eur_expect_close == 42) {
+ if (eur_expect_close == 42)
eurwdt_disable_timer();
- } else {
- printk(KERN_CRIT "eurwdt: Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT
+ "eurwdt: Unexpected close, not stopping watchdog!\n");
eurwdt_ping();
}
clear_bit(0, &eurwdt_is_open);
static const struct file_operations eurwdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = eurwdt_write,
- .ioctl = eurwdt_ioctl,
- .open = eurwdt_open,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = eurwdt_write,
+ .unlocked_ioctl = eurwdt_ioctl,
+ .open = eurwdt_open,
.release = eurwdt_release,
};
int ret;
ret = request_irq(irq, eurwdt_interrupt, IRQF_DISABLED, "eurwdt", NULL);
- if(ret) {
+ if (ret) {
printk(KERN_ERR "eurwdt: IRQ %d is not free.\n", irq);
goto out;
}
ret = register_reboot_notifier(&eurwdt_notifier);
if (ret) {
- printk(KERN_ERR "eurwdt: can't register reboot notifier (err=%d)\n", ret);
+ printk(KERN_ERR
+ "eurwdt: can't register reboot notifier (err=%d)\n", ret);
goto outreg;
}
+ spin_lock_init(&eurwdt_lock);
+
ret = misc_register(&eurwdt_miscdev);
if (ret) {
printk(KERN_ERR "eurwdt: can't misc_register on minor=%d\n",
#include <linux/string.h>
#include <linux/bootmem.h>
#include <linux/slab.h>
-#include <asm/dmi.h>
+#include <linux/dmi.h>
#include <asm/desc.h>
-#include <asm/kdebug.h>
+#include <linux/kdebug.h>
#define PCI_BIOS32_SD_VALUE 0x5F32335F /* "_32_" */
#define CRU_BIOS_SIGNATURE_VALUE 0x55524324
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/ioport.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
/* Module and version information */
#define ESB_VERSION "0.03"
#define ESB_RELOAD_REG BASEADDR + 0x0c /* Reload register */
/* 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) */
+#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 */
+#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 */
/* Reload register bits */
-#define ESB_WDT_RELOAD ( 0x01 << 8 ) /* prevent timeout */
+#define ESB_WDT_RELOAD (0x01 << 8) /* prevent timeout */
/* Magic constants */
#define ESB_UNLOCK1 0x80 /* Step 1 to unlock reset registers */
static char esb_expect_close;
/* module parameters */
-#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat (1<heartbeat<2*1023) */
+/* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
+#define WATCHDOG_HEARTBEAT 30
static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */
+
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (1<heartbeat<2046, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat,
+ "Watchdog heartbeat in seconds. (1<heartbeat<2046, default="
+ __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Some i6300ESB specific functions
* to once before they need to be unlocked again.
*/
static inline void esb_unlock_registers(void) {
- writeb(ESB_UNLOCK1, ESB_RELOAD_REG);
- writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
+ writeb(ESB_UNLOCK1, ESB_RELOAD_REG);
+ writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
}
static void esb_timer_start(void)
/* Enable or Enable + Lock? */
val = 0x02 | (nowayout ? 0x01 : 0x00);
-
- pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
+ pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
}
static int esb_timer_stop(void)
spin_lock(&esb_lock);
esb_unlock_registers();
writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
- /* FIXME: Do we need to flush anything here? */
+ /* FIXME: Do we need to flush anything here? */
spin_unlock(&esb_lock);
}
esb_unlock_registers();
writel(val, ESB_TIMER2_REG);
- /* Reload */
+ /* Reload */
esb_unlock_registers();
writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
return 0;
}
-static int esb_timer_read (void)
+static int esb_timer_read(void)
{
- u32 count;
+ 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;
+ * 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)
+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;
+ /* /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 ();
+ /* 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)
+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;
+ /* 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)
+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 (len) {
if (!nowayout) {
size_t i;
/* 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))
+ 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 ();
+ esb_timer_keepalive();
}
return len;
}
-static int esb_ioctl (struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int new_options, retval = -EINVAL;
int new_heartbeat;
};
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_GETSUPPORT:
+ return copy_to_user(argp, &ident,
+ sizeof(ident)) ? -EFAULT : 0;
- case WDIOC_SETOPTIONS:
- {
- if (get_user (new_options, p))
- return -EFAULT;
+ case WDIOC_GETSTATUS:
+ return put_user(esb_timer_read(), p);
- if (new_options & WDIOS_DISABLECARD) {
- esb_timer_stop ();
- retval = 0;
- }
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(triggered, p);
- if (new_options & WDIOS_ENABLECARD) {
- esb_timer_keepalive ();
- esb_timer_start ();
- retval = 0;
- }
+ case WDIOC_KEEPALIVE:
+ esb_timer_keepalive();
+ return 0;
- return retval;
- }
+ case WDIOC_SETOPTIONS:
+ {
+ if (get_user(new_options, p))
+ return -EFAULT;
- 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);
+ if (new_options & WDIOS_DISABLECARD) {
+ esb_timer_stop();
+ retval = 0;
+ }
- default:
- return -ENOTTY;
- }
+ 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 -ENOTTY;
+ }
}
/*
* Notify system
*/
-static int esb_notify_sys (struct notifier_block *this, unsigned long code, void *unused)
+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;
+ if (code == SYS_DOWN || code == SYS_HALT) {
+ /* Turn the WDT off */
+ esb_timer_stop();
+ }
+ return NOTIFY_DONE;
}
/*
*/
static const struct file_operations esb_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = esb_write,
- .ioctl = esb_ioctl,
- .open = esb_open,
- .release = esb_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = esb_write,
+ .unlocked_ioctl = esb_ioctl,
+ .open = esb_open,
+ .release = esb_release,
};
static struct miscdevice esb_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &esb_fops,
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &esb_fops,
};
static struct notifier_block esb_notifier = {
- .notifier_call = esb_notify_sys,
+ .notifier_call = esb_notify_sys,
};
/*
* want to register another driver on the same PCI id.
*/
static struct pci_device_id esb_pci_tbl[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
- { 0, }, /* End of list */
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
+ { 0, }, /* End of list */
};
-MODULE_DEVICE_TABLE (pci, esb_pci_tbl);
+MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
/*
* Init & exit routines
*/
-static unsigned char __init esb_getdevice (void)
+static unsigned char __init esb_getdevice(void)
{
u8 val1;
unsigned short val2;
+ /*
+ * Find the PCI device
+ */
- struct pci_dev *dev = NULL;
- /*
- * Find the PCI device
- */
-
- for_each_pci_dev(dev) {
- if (pci_match_id(esb_pci_tbl, dev)) {
- esb_pci = dev;
- break;
- }
- }
+ esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_ESB_9, NULL);
- if (esb_pci) {
- if (pci_enable_device(esb_pci)) {
- printk (KERN_ERR PFX "failed to enable device\n");
+ if (esb_pci) {
+ if (pci_enable_device(esb_pci)) {
+ printk(KERN_ERR PFX "failed to enable device\n");
goto err_devput;
}
if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
- printk (KERN_ERR PFX "failed to request region\n");
+ 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;
- }
+ /* 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
/* 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");
+ 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);
return 0;
}
-static int __init watchdog_init (void)
+static int __init watchdog_init(void)
{
- int ret;
-
- /* 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<heartbeat<2046, using %d\n",
- heartbeat);
- }
-
- ret = register_reboot_notifier(&esb_notifier);
- if (ret != 0) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
- goto err_unmap;
- }
-
- ret = misc_register(&esb_miscdev);
- if (ret != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- goto err_notifier;
- }
-
- esb_timer_stop ();
-
- printk (KERN_INFO PFX "initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
- BASEADDR, heartbeat, nowayout);
+ int ret;
+
+ /* 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<heartbeat<2046, using %d\n",
+ heartbeat);
+ }
+ ret = register_reboot_notifier(&esb_notifier);
+ if (ret != 0) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
+ goto err_unmap;
+ }
- return 0;
+ ret = misc_register(&esb_miscdev);
+ if (ret != 0) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
+ goto err_notifier;
+ }
+ esb_timer_stop();
+ printk(KERN_INFO PFX
+ "initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
+ BASEADDR, heartbeat, nowayout);
+ return 0;
err_notifier:
- unregister_reboot_notifier(&esb_notifier);
+ unregister_reboot_notifier(&esb_notifier);
err_unmap:
iounmap(BASEADDR);
/* err_release: */
pci_disable_device(esb_pci);
/* err_devput: */
pci_dev_put(esb_pci);
- return ret;
+ return ret;
}
-static void __exit watchdog_cleanup (void)
+static void __exit watchdog_cleanup(void)
{
/* Stop the timer before we leave */
if (!nowayout)
- esb_timer_stop ();
+ esb_timer_stop();
/* Deregister */
misc_deregister(&esb_miscdev);
- unregister_reboot_notifier(&esb_notifier);
+ unregister_reboot_notifier(&esb_notifier);
iounmap(BASEADDR);
pci_release_region(esb_pci, 0);
pci_disable_device(esb_pci);
--- /dev/null
+/* iTCO Vendor Specific Support hooks */
+#ifdef CONFIG_ITCO_VENDOR_SUPPORT
+extern void iTCO_vendor_pre_start(unsigned long, unsigned int);
+extern void iTCO_vendor_pre_stop(unsigned long);
+extern void iTCO_vendor_pre_keepalive(unsigned long, unsigned int);
+extern void iTCO_vendor_pre_set_heartbeat(unsigned int);
+extern int iTCO_vendor_check_noreboot_on(void);
+#else
+#define iTCO_vendor_pre_start(acpibase, heartbeat) {}
+#define iTCO_vendor_pre_stop(acpibase) {}
+#define iTCO_vendor_pre_keepalive(acpibase, heartbeat) {}
+#define iTCO_vendor_pre_set_heartbeat(heartbeat) {}
+#define iTCO_vendor_check_noreboot_on() 1
+ /* 1=check noreboot; 0=don't check */
+#endif
#include <linux/init.h> /* For __init/__exit/... */
#include <linux/ioport.h> /* For io-port access */
-#include <asm/io.h> /* For inb/outb/... */
+#include <linux/io.h> /* For inb/outb/... */
+
+#include "iTCO_vendor.h"
/* iTCO defines */
#define SMI_EN acpibase + 0x30 /* SMI Control and Enable Register */
#define TCO1_STS TCOBASE + 0x04 /* TCO1 Status Register */
/* List of vendor support modes */
-#define SUPERMICRO_OLD_BOARD 1 /* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */
-#define SUPERMICRO_NEW_BOARD 2 /* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */
+/* SuperMicro Pentium 3 Era 370SSE+-OEM1/P3TSSE */
+#define SUPERMICRO_OLD_BOARD 1
+/* SuperMicro Pentium 4 / Xeon 4 / EMT64T Era Systems */
+#define SUPERMICRO_NEW_BOARD 2
-static int vendorsupport = 0;
+static int vendorsupport;
module_param(vendorsupport, int, 0);
MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default=0 (none), 1=SuperMicro Pent3, 2=SuperMicro Pent4+");
*/
/* I/O Port's */
-#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */
-#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */
+#define SM_REGINDEX 0x2e /* SuperMicro ICH4+ Register Index */
+#define SM_DATAIO 0x2f /* SuperMicro ICH4+ Register Data I/O */
/* Control Register's */
-#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */
-#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */
+#define SM_CTLPAGESW 0x07 /* SuperMicro ICH4+ Control Page Switch */
+#define SM_CTLPAGE 0x08 /* SuperMicro ICH4+ Control Page Num */
-#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */
+#define SM_WATCHENABLE 0x30 /* Watchdog enable: Bit 0: 0=off, 1=on */
-#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */
+#define SM_WATCHPAGE 0x87 /* Watchdog unlock control page */
-#define SM_ENDWATCH 0xAA /* Watchdog lock control page */
+#define SM_ENDWATCH 0xAA /* Watchdog lock control page */
-#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */
- /* (Bit 3: 0 = seconds, 1 = minutes */
+#define SM_COUNTMODE 0xf5 /* Watchdog count mode select */
+ /* (Bit 3: 0 = seconds, 1 = minutes */
-#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */
+#define SM_WATCHTIMER 0xf6 /* 8-bits, Watchdog timer counter (RW) */
-#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */
- /* Bit 6: timer is reset by kbd interrupt */
- /* Bit 7: timer is reset by mouse interrupt */
+#define SM_RESETCONTROL 0xf7 /* Watchdog reset control */
+ /* Bit 6: timer is reset by kbd interrupt */
+ /* Bit 7: timer is reset by mouse interrupt */
static void supermicro_new_unlock_watchdog(void)
{
- outb(SM_WATCHPAGE, SM_REGINDEX); /* Write 0x87 to port 0x2e twice */
+ /* Write 0x87 to port 0x2e twice */
outb(SM_WATCHPAGE, SM_REGINDEX);
-
- outb(SM_CTLPAGESW, SM_REGINDEX); /* Switch to watchdog control page */
+ outb(SM_WATCHPAGE, SM_REGINDEX);
+ /* Switch to watchdog control page */
+ outb(SM_CTLPAGESW, SM_REGINDEX);
outb(SM_CTLPAGE, SM_DATAIO);
}
outb(val, SM_DATAIO);
/* Write heartbeat interval to WDOG */
- outb (SM_WATCHTIMER, SM_REGINDEX);
+ outb(SM_WATCHTIMER, SM_REGINDEX);
outb((heartbeat & 255), SM_DATAIO);
/* Make sure keyboard/mouse interrupts don't interfere */
int iTCO_vendor_check_noreboot_on(void)
{
- switch(vendorsupport) {
+ switch (vendorsupport) {
case SUPERMICRO_OLD_BOARD:
return 0;
default:
static int __init iTCO_vendor_init_module(void)
{
- printk (KERN_INFO PFX "vendor-support=%d\n", vendorsupport);
+ printk(KERN_INFO PFX "vendor-support=%d\n", vendorsupport);
return 0;
}
static void __exit iTCO_vendor_exit_module(void)
{
- printk (KERN_INFO PFX "Module Unloaded\n");
+ printk(KERN_INFO PFX "Module Unloaded\n");
}
module_init(iTCO_vendor_init_module);
#include <linux/types.h> /* For standard types (like size_t) */
#include <linux/errno.h> /* For the -ENODEV/... values */
#include <linux/kernel.h> /* For printk/panic/... */
-#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV
+ (WATCHDOG_MINOR) */
#include <linux/watchdog.h> /* For the watchdog specific items */
#include <linux/init.h> /* For __init/__exit/... */
#include <linux/fs.h> /* For file operations */
#include <linux/pci.h> /* For pci functions */
#include <linux/ioport.h> /* For io-port access */
#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
+#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
+#include <linux/io.h> /* For inb/outb/... */
-#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
-#include <asm/io.h> /* For inb/outb/... */
+#include "iTCO_vendor.h"
/* TCO related info */
enum iTCO_chipsets {
{"ICH9DH", 2},
{"ICH9DO", 2},
{"631xESB/632xESB", 2},
- {NULL,0}
+ {NULL, 0}
};
#define ITCO_PCI_DEVICE(dev, data) \
* functions that probably will be registered by other drivers.
*/
static struct pci_device_id iTCO_wdt_pci_tbl[] = {
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5 )},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AA_0, TCO_ICH)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801AB_0, TCO_ICH0)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_0, TCO_ICH2)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801BA_10, TCO_ICH2M)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_0, TCO_ICH3)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801CA_12, TCO_ICH3M)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_0, TCO_ICH4)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801DB_12, TCO_ICH4M)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801E_0, TCO_CICH)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_82801EB_0, TCO_ICH5)},
{ ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ESB_1, TCO_6300ESB)},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M )},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_0, TCO_ICH6)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_1, TCO_ICH6M)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH6_2, TCO_ICH6W)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_0, TCO_ICH7)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_1, TCO_ICH7M)},
{ ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH7_31, TCO_ICH7MDH)},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_0, TCO_ICH8 )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO )},
- { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M )},
- { 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_ICH8_0, TCO_ICH8)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_1, TCO_ICH8ME)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_2, TCO_ICH8DH)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_3, TCO_ICH8DO)},
+ { ITCO_PCI_DEVICE(PCI_DEVICE_ID_INTEL_ICH8_4, TCO_ICH8M)},
+ { 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)},
{ ITCO_PCI_DEVICE(0x267f, TCO_631XESB)},
{ 0, }, /* End of list */
};
-MODULE_DEVICE_TABLE (pci, iTCO_wdt_pci_tbl);
+MODULE_DEVICE_TABLE(pci, iTCO_wdt_pci_tbl);
/* Address definitions for the TCO */
-#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60 /* TCO base address */
-#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30 /* SMI Control and Enable Register */
+/* TCO base address */
+#define TCOBASE iTCO_wdt_private.ACPIBASE + 0x60
+/* SMI Control and Enable Register */
+#define SMI_EN iTCO_wdt_private.ACPIBASE + 0x30
-#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Current Value */
+#define TCO_RLD TCOBASE + 0x00 /* TCO Timer Reload and Curr. Value */
#define TCOv1_TMR TCOBASE + 0x01 /* TCOv1 Timer Initial Value */
#define TCO_DAT_IN TCOBASE + 0x02 /* TCO Data In Register */
#define TCO_DAT_OUT TCOBASE + 0x03 /* TCO Data Out Register */
/* internal variables */
static unsigned long is_active;
static char expect_release;
-static struct { /* this is private data for the iTCO_wdt device */
- unsigned int iTCO_version; /* TCO version/generation */
- unsigned long ACPIBASE; /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */
- unsigned long __iomem *gcs; /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2) */
- spinlock_t io_lock; /* the lock for io operations */
- struct pci_dev *pdev; /* the PCI-device */
+static struct { /* this is private data for the iTCO_wdt device */
+ /* TCO version/generation */
+ unsigned int iTCO_version;
+ /* The cards ACPIBASE address (TCOBASE = ACPIBASE+0x60) */
+ unsigned long ACPIBASE;
+ /* NO_REBOOT flag is Memory-Mapped GCS register bit 5 (TCO version 2)*/
+ unsigned long __iomem *gcs;
+ /* the lock for io operations */
+ spinlock_t io_lock;
+ /* the PCI-device */
+ struct pci_dev *pdev;
} iTCO_wdt_private;
-static struct platform_device *iTCO_wdt_platform_device; /* the watchdog platform device */
+/* the watchdog platform device */
+static struct platform_device *iTCO_wdt_platform_device;
/* module parameters */
#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */
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) ")");
-
-/* iTCO Vendor Specific Support hooks */
-#ifdef CONFIG_ITCO_VENDOR_SUPPORT
-extern void iTCO_vendor_pre_start(unsigned long, unsigned int);
-extern void iTCO_vendor_pre_stop(unsigned long);
-extern void iTCO_vendor_pre_keepalive(unsigned long, unsigned int);
-extern void iTCO_vendor_pre_set_heartbeat(unsigned int);
-extern int iTCO_vendor_check_noreboot_on(void);
-#else
-#define iTCO_vendor_pre_start(acpibase, heartbeat) {}
-#define iTCO_vendor_pre_stop(acpibase) {}
-#define iTCO_vendor_pre_keepalive(acpibase,heartbeat) {}
-#define iTCO_vendor_pre_set_heartbeat(heartbeat) {}
-#define iTCO_vendor_check_noreboot_on() 1 /* 1=check noreboot; 0=don't check */
-#endif
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Some TCO specific functions
iTCO_vendor_pre_keepalive(iTCO_wdt_private.ACPIBASE, heartbeat);
/* Reload the timer by writing to the TCO Timer Counter register */
- if (iTCO_wdt_private.iTCO_version == 2) {
+ if (iTCO_wdt_private.iTCO_version == 2)
outw(0x01, TCO_RLD);
- } else if (iTCO_wdt_private.iTCO_version == 1) {
+ else if (iTCO_wdt_private.iTCO_version == 1)
outb(0x01, TCO_RLD);
- }
spin_unlock(&iTCO_wdt_private.io_lock);
return 0;
return 0;
}
-static int iTCO_wdt_get_timeleft (int *time_left)
+static int iTCO_wdt_get_timeleft(int *time_left)
{
unsigned int val16;
unsigned char val8;
* /dev/watchdog handling
*/
-static int iTCO_wdt_open (struct inode *inode, struct file *file)
+static int iTCO_wdt_open(struct inode *inode, struct file *file)
{
/* /dev/watchdog can only be opened once */
if (test_and_set_bit(0, &is_active))
return nonseekable_open(inode, file);
}
-static int iTCO_wdt_release (struct inode *inode, struct file *file)
+static int iTCO_wdt_release(struct inode *inode, struct file *file)
{
/*
* Shut off the timer.
if (expect_release == 42) {
iTCO_wdt_stop();
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
iTCO_wdt_keepalive();
}
clear_bit(0, &is_active);
return 0;
}
-static ssize_t iTCO_wdt_write (struct file *file, const char __user *data,
- size_t len, loff_t * ppos)
+static ssize_t iTCO_wdt_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... */
+ /* note: just in case someone wrote the magic
+ character five months ago... */
expect_release = 0;
- /* scan to see whether or not we got the magic character */
+ /* 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 len;
}
-static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long iTCO_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int new_options, retval = -EINVAL;
int new_heartbeat;
};
switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident,
- sizeof (ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_KEEPALIVE:
- iTCO_wdt_keepalive();
- return 0;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
- case WDIOC_SETOPTIONS:
- {
- if (get_user(new_options, p))
- return -EFAULT;
-
- if (new_options & WDIOS_DISABLECARD) {
- iTCO_wdt_stop();
- retval = 0;
- }
+ case WDIOC_KEEPALIVE:
+ iTCO_wdt_keepalive();
+ return 0;
- if (new_options & WDIOS_ENABLECARD) {
- iTCO_wdt_keepalive();
- iTCO_wdt_start();
- retval = 0;
- }
+ case WDIOC_SETOPTIONS:
+ {
+ if (get_user(new_options, p))
+ return -EFAULT;
- return retval;
+ if (new_options & WDIOS_DISABLECARD) {
+ iTCO_wdt_stop();
+ retval = 0;
}
-
- case WDIOC_SETTIMEOUT:
- {
- if (get_user(new_heartbeat, p))
- return -EFAULT;
-
- if (iTCO_wdt_set_heartbeat(new_heartbeat))
- return -EINVAL;
-
+ if (new_options & WDIOS_ENABLECARD) {
iTCO_wdt_keepalive();
- /* Fall */
+ iTCO_wdt_start();
+ retval = 0;
}
-
- case WDIOC_GETTIMEOUT:
- return put_user(heartbeat, p);
-
- case WDIOC_GETTIMELEFT:
- {
- int time_left;
-
- if (iTCO_wdt_get_timeleft(&time_left))
- return -EINVAL;
-
- return put_user(time_left, p);
- }
-
- default:
- return -ENOTTY;
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ if (get_user(new_heartbeat, p))
+ return -EFAULT;
+ if (iTCO_wdt_set_heartbeat(new_heartbeat))
+ return -EINVAL;
+ iTCO_wdt_keepalive();
+ /* Fall */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(heartbeat, p);
+ case WDIOC_GETTIMELEFT:
+ {
+ int time_left;
+ if (iTCO_wdt_get_timeleft(&time_left))
+ return -EINVAL;
+ return put_user(time_left, p);
+ }
+ default:
+ return -ENOTTY;
}
}
*/
static const struct file_operations iTCO_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = iTCO_wdt_write,
- .ioctl = iTCO_wdt_ioctl,
- .open = iTCO_wdt_open,
- .release = iTCO_wdt_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = iTCO_wdt_write,
+ .unlocked_ioctl = iTCO_wdt_ioctl,
+ .open = iTCO_wdt_open,
+ .release = iTCO_wdt_release,
};
static struct miscdevice iTCO_wdt_miscdev = {
* Init & exit routines
*/
-static int __devinit iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device_id *ent, struct platform_device *dev)
+static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
+ const struct pci_device_id *ent, struct platform_device *dev)
{
int ret;
u32 base_address;
pci_dev_put(pdev);
return -ENODEV;
}
- iTCO_wdt_private.iTCO_version = iTCO_chipset_info[ent->driver_data].iTCO_version;
+ iTCO_wdt_private.iTCO_version =
+ iTCO_chipset_info[ent->driver_data].iTCO_version;
iTCO_wdt_private.ACPIBASE = base_address;
iTCO_wdt_private.pdev = pdev;
- /* Get the Memory-Mapped GCS register, we need it for the NO_REBOOT flag (TCO v2) */
- /* To get access to it you have to read RCBA from PCI Config space 0xf0
- and use it as base. GCS = RCBA + ICH6_GCS(0x3410). */
+ /* Get the Memory-Mapped GCS register, we need it for the
+ NO_REBOOT flag (TCO v2). To get access to it you have to
+ read RCBA from PCI Config space 0xf0 and use it as base.
+ GCS = RCBA + ICH6_GCS(0x3410). */
if (iTCO_wdt_private.iTCO_version == 2) {
pci_read_config_dword(pdev, 0xf0, &base_address);
RCBA = base_address & 0xffffc000;
- iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410),4);
+ iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410), 4);
}
/* Check chipset's NO_REBOOT bit */
/* Set the TCO_EN bit in SMI_EN register */
if (!request_region(SMI_EN, 4, "iTCO_wdt")) {
- printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n",
- SMI_EN );
+ printk(KERN_ERR PFX
+ "I/O address 0x%04lx already in use\n", SMI_EN);
ret = -EIO;
goto out;
}
outl(val32, SMI_EN);
release_region(SMI_EN, 4);
- /* The TCO I/O registers reside in a 32-byte range pointed to by the TCOBASE value */
- if (!request_region (TCOBASE, 0x20, "iTCO_wdt")) {
- printk (KERN_ERR PFX "I/O address 0x%04lx already in use\n",
+ /* The TCO I/O registers reside in a 32-byte range pointed to
+ by the TCOBASE value */
+ if (!request_region(TCOBASE, 0x20, "iTCO_wdt")) {
+ printk(KERN_ERR PFX "I/O address 0x%04lx already in use\n",
TCOBASE);
ret = -EIO;
goto out;
}
- printk(KERN_INFO PFX "Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n",
- iTCO_chipset_info[ent->driver_data].name,
- iTCO_chipset_info[ent->driver_data].iTCO_version,
- TCOBASE);
+ printk(KERN_INFO PFX
+ "Found a %s TCO device (Version=%d, TCOBASE=0x%04lx)\n",
+ iTCO_chipset_info[ent->driver_data].name,
+ iTCO_chipset_info[ent->driver_data].iTCO_version,
+ TCOBASE);
/* Clear out the (probably old) status */
outb(0, TCO1_STS);
/* Make sure the watchdog is not running */
iTCO_wdt_stop();
- /* Check that the heartbeat value is within it's range ; if not reset to the default */
+ /* Check that the heartbeat value is within it's range;
+ if not reset to the default */
if (iTCO_wdt_set_heartbeat(heartbeat)) {
iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT);
- printk(KERN_INFO PFX "heartbeat value must be 2<heartbeat<39 (TCO v1) or 613 (TCO v2), using %d\n",
- heartbeat);
+ printk(KERN_INFO PFX "heartbeat value must be 2 < heartbeat < 39 (TCO v1) or 613 (TCO v2), using %d\n",
+ heartbeat);
}
ret = misc_register(&iTCO_wdt_miscdev);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_region;
}
- printk (KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
- heartbeat, nowayout);
+ printk(KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
+ heartbeat, nowayout);
return 0;
unreg_region:
- release_region (TCOBASE, 0x20);
+ release_region(TCOBASE, 0x20);
out:
if (iTCO_wdt_private.iTCO_version == 2)
iounmap(iTCO_wdt_private.gcs);
if (err)
return err;
- iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+ iTCO_wdt_platform_device = platform_device_register_simple(DRV_NAME,
+ -1, NULL, 0);
if (IS_ERR(iTCO_wdt_platform_device)) {
err = PTR_ERR(iTCO_wdt_platform_device);
goto unreg_platform_driver;
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/system.h>
static struct platform_device *ibwdt_platform_device;
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* /dev/watchdog handling
*/
-static ssize_t
-ibwdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t ibwdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
return count;
}
-static int
-ibwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long ibwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int new_margin;
void __user *argp = (void __user *)arg;
int __user *p = argp;
static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "IB700 WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident)))
- return -EFAULT;
- break;
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
+ return put_user(0, p);
case WDIOC_KEEPALIVE:
- ibwdt_ping();
- break;
+ ibwdt_ping();
+ break;
case WDIOC_SETTIMEOUT:
- if (get_user(new_margin, p))
- return -EFAULT;
- if (ibwdt_set_heartbeat(new_margin))
- return -EINVAL;
- ibwdt_ping();
- /* Fall */
+ if (get_user(new_margin, p))
+ return -EFAULT;
+ if (ibwdt_set_heartbeat(new_margin))
+ return -EINVAL;
+ ibwdt_ping();
+ /* Fall */
case WDIOC_GETTIMEOUT:
- return put_user(wd_times[wd_margin], p);
+ return put_user(wd_times[wd_margin], p);
case WDIOC_SETOPTIONS:
{
- int options, retval = -EINVAL;
+ int options, retval = -EINVAL;
- if (get_user(options, p))
- return -EFAULT;
+ if (get_user(options, p))
+ return -EFAULT;
- if (options & WDIOS_DISABLECARD) {
- ibwdt_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- ibwdt_ping();
- retval = 0;
- }
-
- return retval;
+ if (options & WDIOS_DISABLECARD) {
+ ibwdt_disable();
+ retval = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ ibwdt_ping();
+ retval = 0;
+ }
+ return retval;
}
-
default:
- return -ENOTTY;
+ return -ENOTTY;
}
return 0;
}
-static int
-ibwdt_open(struct inode *inode, struct file *file)
+static int ibwdt_open(struct inode *inode, struct file *file)
{
- if (test_and_set_bit(0, &ibwdt_is_open)) {
+ if (test_and_set_bit(0, &ibwdt_is_open))
return -EBUSY;
- }
if (nowayout)
__module_get(THIS_MODULE);
if (expect_close == 42) {
ibwdt_disable();
} else {
- printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
+ printk(KERN_CRIT PFX
+ "WDT device closed unexpectedly. WDT will not stop!\n");
ibwdt_ping();
}
clear_bit(0, &ibwdt_is_open);
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ibwdt_write,
- .ioctl = ibwdt_ioctl,
+ .unlocked_ioctl = ibwdt_ioctl,
.open = ibwdt_open,
.release = ibwdt_close,
};
#if WDT_START != WDT_STOP
if (!request_region(WDT_STOP, 1, "IB700 WDT")) {
- printk (KERN_ERR PFX "STOP method I/O %X is not available.\n", WDT_STOP);
+ printk(KERN_ERR PFX "STOP method I/O %X is not available.\n",
+ WDT_STOP);
res = -EIO;
goto out_nostopreg;
}
#endif
if (!request_region(WDT_START, 1, "IB700 WDT")) {
- printk (KERN_ERR PFX "START method I/O %X is not available.\n", WDT_START);
+ printk(KERN_ERR PFX "START method I/O %X is not available.\n",
+ WDT_START);
res = -EIO;
goto out_nostartreg;
}
res = misc_register(&ibwdt_miscdev);
if (res) {
- printk (KERN_ERR PFX "failed to register misc device\n");
+ printk(KERN_ERR PFX "failed to register misc device\n");
goto out_nomisc;
}
return 0;
static int __devexit ibwdt_remove(struct platform_device *dev)
{
misc_deregister(&ibwdt_miscdev);
- release_region(WDT_START,1);
+ release_region(WDT_START, 1);
#if WDT_START != WDT_STOP
- release_region(WDT_STOP,1);
+ release_region(WDT_STOP, 1);
#endif
return 0;
}
{
int err;
- printk(KERN_INFO PFX "WDT driver for IB700 single board computer initialising.\n");
+ printk(KERN_INFO PFX
+ "WDT driver for IB700 single board computer initialising.\n");
err = platform_driver_register(&ibwdt_driver);
if (err)
return err;
- ibwdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+ ibwdt_platform_device = platform_device_register_simple(DRV_NAME,
+ -1, NULL, 0);
if (IS_ERR(ibwdt_platform_device)) {
err = PTR_ERR(ibwdt_platform_device);
goto unreg_platform_driver;
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
#include <linux/dmi.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
enum {
static unsigned int asr_type, asr_base, asr_length;
static unsigned int asr_read_addr, asr_write_addr;
static unsigned char asr_toggle_mask, asr_disable_mask;
+static spinlock_t asr_lock;
-static void asr_toggle(void)
+static void __asr_toggle(void)
{
- unsigned char reg = inb(asr_read_addr);
+ unsigned char reg;
+
+ reg = inb(asr_read_addr);
outb(reg & ~asr_toggle_mask, asr_write_addr);
reg = inb(asr_read_addr);
outb(reg & ~asr_toggle_mask, asr_write_addr);
reg = inb(asr_read_addr);
+ spin_unlock(&asr_lock);
+}
+
+static void asr_toggle(void)
+{
+ spin_lock(&asr_lock);
+ __asr_toggle();
+ spin_unlock(&asr_lock);
}
static void asr_enable(void)
{
unsigned char reg;
+ spin_lock(&asr_lock);
if (asr_type == ASMTYPE_TOPAZ) {
/* asr_write_addr == asr_read_addr */
reg = inb(asr_read_addr);
* First make sure the hardware timer is reset by toggling
* ASR hardware timer line.
*/
- asr_toggle();
+ __asr_toggle();
reg = inb(asr_read_addr);
outb(reg & ~asr_disable_mask, asr_write_addr);
}
reg = inb(asr_read_addr);
+ spin_unlock(&asr_lock);
}
static void asr_disable(void)
{
- unsigned char reg = inb(asr_read_addr);
+ unsigned char reg;
+
+ spin_lock(&asr_lock);
+ reg = inb(asr_read_addr);
if (asr_type == ASMTYPE_TOPAZ)
/* asr_write_addr == asr_read_addr */
outb(reg | asr_disable_mask, asr_write_addr);
}
reg = inb(asr_read_addr);
+ spin_unlock(&asr_lock);
}
static int __init asr_get_base_address(void)
switch (asr_type) {
case ASMTYPE_TOPAZ:
- /* SELECT SuperIO CHIP FOR QUERYING (WRITE 0x07 TO BOTH 0x2E and 0x2F) */
+ /* SELECT SuperIO CHIP FOR QUERYING
+ (WRITE 0x07 TO BOTH 0x2E and 0x2F) */
outb(0x07, 0x2e);
outb(0x07, 0x2f);
case ASMTYPE_JASPER:
type = "Jaspers ";
-
- /* FIXME: need to use pci_config_lock here, but it's not exported */
+#if 0
+ u32 r;
+ /* Suggested fix */
+ pdev = pci_get_bus_and_slot(0, DEVFN(0x1f, 0));
+ if (pdev == NULL)
+ return -ENODEV;
+ pci_read_config_dword(pdev, 0x58, &r);
+ asr_base = r & 0xFFFE;
+ pci_dev_put(pdev);
+#else
+ /* FIXME: need to use pci_config_lock here,
+ but it's not exported */
/* spin_lock_irqsave(&pci_config_lock, flags);*/
/* Select the SuperIO chip in the PCI I/O port register */
outl(0x8000f858, 0xcf8);
+ /* BUS 0, Slot 1F, fnc 0, offset 58 */
+
/*
* Read the base address for the SuperIO chip.
* Only the lower 16 bits are valid, but the address is word
asr_base = inl(0xcfc) & 0xfffe;
/* spin_unlock_irqrestore(&pci_config_lock, flags);*/
-
+#endif
asr_read_addr = asr_write_addr =
asr_base + JASPER_ASR_REG_OFFSET;
asr_toggle_mask = JASPER_ASR_TOGGLE_MASK;
return count;
}
-static int asr_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long asr_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
static const struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING |
+ .options = WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.identity = "IBM ASR"
};
int heartbeat;
switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident)) ?
- -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_KEEPALIVE:
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ asr_toggle();
+ return 0;
+ /*
+ * The hardware has a fixed timeout value, so no WDIOC_SETTIMEOUT
+ * and WDIOC_GETTIMEOUT always returns 256.
+ */
+ case WDIOC_GETTIMEOUT:
+ heartbeat = 256;
+ return put_user(heartbeat, p);
+ case WDIOC_SETOPTIONS:
+ {
+ int new_options, retval = -EINVAL;
+ if (get_user(new_options, p))
+ return -EFAULT;
+ if (new_options & WDIOS_DISABLECARD) {
+ asr_disable();
+ retval = 0;
+ }
+ if (new_options & WDIOS_ENABLECARD) {
+ asr_enable();
asr_toggle();
- return 0;
-
- /*
- * The hardware has a fixed timeout value, so no WDIOC_SETTIMEOUT
- * and WDIOC_GETTIMEOUT always returns 256.
- */
- case WDIOC_GETTIMEOUT:
- heartbeat = 256;
- return put_user(heartbeat, p);
-
- case WDIOC_SETOPTIONS: {
- int new_options, retval = -EINVAL;
-
- if (get_user(new_options, p))
- return -EFAULT;
-
- if (new_options & WDIOS_DISABLECARD) {
- asr_disable();
- retval = 0;
- }
-
- if (new_options & WDIOS_ENABLECARD) {
- asr_enable();
- asr_toggle();
- retval = 0;
- }
-
- return retval;
+ retval = 0;
}
+ return retval;
+ }
+ default:
+ return -ENOTTY;
}
-
- return -ENOTTY;
}
static int asr_open(struct inode *inode, struct file *file)
{
- if(test_and_set_bit(0, &asr_is_open))
+ if (test_and_set_bit(0, &asr_is_open))
return -EBUSY;
asr_toggle();
if (asr_expect_close == 42)
asr_disable();
else {
- printk(KERN_CRIT PFX "unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "unexpected close, not stopping watchdog!\n");
asr_toggle();
}
clear_bit(0, &asr_is_open);
}
static const struct file_operations asr_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = asr_write,
- .ioctl = asr_ioctl,
- .open = asr_open,
- .release = asr_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = asr_write,
+ .unlocked_ioctl = asr_ioctl,
+ .open = asr_open,
+ .release = asr_release,
};
static struct miscdevice asr_miscdev = {
if (!asr_type)
return -ENODEV;
+ spin_lock_init(&asr_lock);
+
rc = asr_get_base_address();
if (rc)
return rc;
module_exit(ibmasr_exit);
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
MODULE_DESCRIPTION("IBM Automatic Server Restart driver");
MODULE_AUTHOR("Andrey Panin");
/*
* IndyDog 0.3 A Hardware Watchdog Device for SGI IP22
*
- * (c) Copyright 2002 Guido Guenther <agx@sigxcpu.org>, All Rights Reserved.
+ * (c) Copyright 2002 Guido Guenther <agx@sigxcpu.org>,
+ * All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/sgi/mc.h>
#define PFX "indydog: "
-static int indydog_alive;
+static unsigned long indydog_alive;
+static spinlock_t indydog_lock;
#define WATCHDOG_TIMEOUT 30 /* 30 sec default 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void indydog_start(void)
{
- u32 mc_ctrl0 = sgimc->cpuctrl0;
+ u32 mc_ctrl0;
+ spin_lock(&indydog_lock);
+ mc_ctrl0 = sgimc->cpuctrl0;
mc_ctrl0 = sgimc->cpuctrl0 | SGIMC_CCTRL0_WDOG;
sgimc->cpuctrl0 = mc_ctrl0;
+ spin_unlock(&indydog_lock);
}
static void indydog_stop(void)
{
- u32 mc_ctrl0 = sgimc->cpuctrl0;
+ u32 mc_ctrl0;
+ spin_lock(&indydog_lock);
+
+ mc_ctrl0 = sgimc->cpuctrl0;
mc_ctrl0 &= ~SGIMC_CCTRL0_WDOG;
sgimc->cpuctrl0 = mc_ctrl0;
+ spin_unlock(&indydog_lock);
printk(KERN_INFO PFX "Stopped watchdog timer.\n");
}
*/
static int indydog_open(struct inode *inode, struct file *file)
{
- if (indydog_alive)
+ if (test_and_set_bit(0, &indydog_alive))
return -EBUSY;
if (nowayout)
* Lock it in if it's a module and we defined ...NOWAYOUT */
if (!nowayout)
indydog_stop(); /* Turn the WDT off */
-
- indydog_alive = 0;
-
+ clear_bit(0, &indydog_alive);
return 0;
}
-static ssize_t indydog_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t indydog_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
/* Refresh the timer. */
- if (len) {
+ if (len)
indydog_ping();
- }
return len;
}
-static int indydog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long indydog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int options, retval = -EINVAL;
static struct watchdog_info ident = {
};
switch (cmd) {
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- if (copy_to_user((struct watchdog_info *)arg,
- &ident, sizeof(ident)))
- return -EFAULT;
- return 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0,(int *)arg);
- case WDIOC_KEEPALIVE:
- indydog_ping();
- return 0;
- case WDIOC_GETTIMEOUT:
- return put_user(WATCHDOG_TIMEOUT,(int *)arg);
- case WDIOC_SETOPTIONS:
- {
- if (get_user(options, (int *)arg))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- indydog_stop();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- indydog_start();
- retval = 0;
- }
-
- return retval;
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user((struct watchdog_info *)arg,
+ &ident, sizeof(ident)))
+ return -EFAULT;
+ return 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, (int *)arg);
+ case WDIOC_KEEPALIVE:
+ indydog_ping();
+ return 0;
+ case WDIOC_GETTIMEOUT:
+ return put_user(WATCHDOG_TIMEOUT, (int *)arg);
+ case WDIOC_SETOPTIONS:
+ {
+ if (get_user(options, (int *)arg))
+ return -EFAULT;
+ if (options & WDIOS_DISABLECARD) {
+ indydog_stop();
+ retval = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ indydog_start();
+ retval = 0;
}
+ return retval;
+ }
+ default:
+ return -ENOTTY;
}
}
-static int indydog_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int indydog_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
indydog_stop(); /* Turn the WDT off */
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = indydog_write,
- .ioctl = indydog_ioctl,
+ .unlocked_ioctl = indydog_ioctl,
.open = indydog_open,
.release = indydog_release,
};
{
int ret;
+ spin_lock_init(&indydog_lock);
+
ret = register_reboot_notifier(&indydog_notifier);
if (ret) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&indydog_miscdev);
if (ret) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&indydog_notifier);
return ret;
}
static int nowayout = WATCHDOG_NOWAYOUT;
static unsigned long wdt_status;
static unsigned long boot_status;
+static spinlock_t wdt_lock;
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
/* Arm and enable the Timer to starting counting down from 0xFFFF.FFFF
* Takes approx. 10.7s to timeout
*/
+ spin_lock(&wdt_lock);
write_wdtcr(IOP_WDTCR_EN_ARM);
write_wdtcr(IOP_WDTCR_EN);
+ spin_unlock(&wdt_lock);
}
/* returns 0 if the timer was successfully disabled */
{
/* Stop Counting */
if (wdt_supports_disable()) {
+ spin_lock(&wdt_lock);
write_wdtcr(IOP_WDTCR_DIS_ARM);
write_wdtcr(IOP_WDTCR_DIS);
clear_bit(WDT_ENABLED, &wdt_status);
+ spin_unlock(&wdt_lock);
printk(KERN_INFO "WATCHDOG: Disabled\n");
return 0;
} else
return -EBUSY;
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
wdt_enable();
-
set_bit(WDT_ENABLED, &wdt_status);
-
return nonseekable_open(inode, file);
}
-static ssize_t
-iop_wdt_write(struct file *file, const char *data, size_t len,
+static ssize_t iop_wdt_write(struct file *file, const char *data, size_t len,
loff_t *ppos)
{
if (len) {
}
wdt_enable();
}
-
return len;
}
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
.options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
.identity = "iop watchdog",
};
-static int
-iop_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long iop_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int options;
int ret = -ENOTTY;
+ int __user *argp = (int __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user
- ((struct watchdog_info *)arg, &ident, sizeof ident))
+ if (copy_to_user(argp, &ident, sizeof ident))
ret = -EFAULT;
else
ret = 0;
break;
case WDIOC_GETSTATUS:
- ret = put_user(0, (int *)arg);
+ ret = put_user(0, argp);
break;
case WDIOC_GETBOOTSTATUS:
- ret = put_user(boot_status, (int *)arg);
+ ret = put_user(boot_status, argp);
break;
case WDIOC_GETTIMEOUT:
- ret = put_user(iop_watchdog_timeout(), (int *)arg);
+ ret = put_user(iop_watchdog_timeout(), argp);
break;
case WDIOC_KEEPALIVE:
} else
ret = 0;
}
-
if (options & WDIOS_ENABLECARD) {
wdt_enable();
ret = 0;
}
break;
}
-
return ret;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = iop_wdt_write,
- .ioctl = iop_wdt_ioctl,
+ .unlocked_ioctl = iop_wdt_ioctl,
.open = iop_wdt_open,
.release = iop_wdt_release,
};
{
int ret;
- ret = misc_register(&iop_wdt_miscdev);
- if (ret == 0)
- printk("iop watchdog timer: timeout %lu sec\n",
- iop_watchdog_timeout());
+ spin_lock_init(&wdt_lock);
+
/* check if the reset was caused by the watchdog timer */
boot_status = (read_rcsr() & IOP_RCSR_WDT) ? WDIOF_CARDRESET : 0;
*/
write_wdtsr(IOP13XX_WDTCR_IB_RESET);
+ /* Register after we have the device set up so we cannot race
+ with an open */
+ ret = misc_register(&iop_wdt_miscdev);
+ if (ret == 0)
+ printk("iop watchdog timer: timeout %lu sec\n",
+ iop_watchdog_timeout());
+
return ret;
}
#include <linux/watchdog.h>
#include <linux/init.h>
#include <linux/bitops.h>
+#include <linux/uaccess.h>
#include <asm/hardware.h>
-#include <asm/uaccess.h>
static int nowayout = WATCHDOG_NOWAYOUT;
static unsigned int heartbeat = 60; /* (secs) Default is 1 minute */
static unsigned long wdt_status;
+static spinlock_t wdt_lock;
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
static unsigned long wdt_tick_rate;
-static void
-wdt_enable(void)
+static void wdt_enable(void)
{
+ spin_lock(&wdt_lock);
ixp2000_reg_write(IXP2000_RESET0, *(IXP2000_RESET0) | WDT_RESET_ENABLE);
ixp2000_reg_write(IXP2000_TWDE, WDT_ENABLE);
ixp2000_reg_write(IXP2000_T4_CLD, heartbeat * wdt_tick_rate);
ixp2000_reg_write(IXP2000_T4_CTL, TIMER_DIVIDER_256 | TIMER_ENABLE);
+ spin_unlock(&wdt_lock);
}
-static void
-wdt_disable(void)
+static void wdt_disable(void)
{
+ spin_lock(&wdt_lock);
ixp2000_reg_write(IXP2000_T4_CTL, 0);
+ spin_unlock(&wdt_lock);
}
-static void
-wdt_keepalive(void)
+static void wdt_keepalive(void)
{
+ spin_lock(&wdt_lock);
ixp2000_reg_write(IXP2000_T4_CLD, heartbeat * wdt_tick_rate);
+ spin_unlock(&wdt_lock);
}
-static int
-ixp2000_wdt_open(struct inode *inode, struct file *file)
+static int ixp2000_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(WDT_IN_USE, &wdt_status))
return -EBUSY;
return nonseekable_open(inode, file);
}
-static ssize_t
-ixp2000_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t ixp2000_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
if (len) {
if (!nowayout) {
.identity = "IXP2000 Watchdog",
};
-static int
-ixp2000_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long ixp2000_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int ret = -ENOTTY;
int time;
return ret;
}
-static int
-ixp2000_wdt_release(struct inode *inode, struct file *file)
+static int ixp2000_wdt_release(struct inode *inode, struct file *file)
{
- if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) {
+ if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
wdt_disable();
- } else {
+ else
printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - "
"timer will not stop\n");
- }
-
clear_bit(WDT_IN_USE, &wdt_status);
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
}
-static const struct file_operations ixp2000_wdt_fops =
-{
+static const struct file_operations ixp2000_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ixp2000_wdt_write,
- .ioctl = ixp2000_wdt_ioctl,
+ .unlocked_ioctl = ixp2000_wdt_ioctl,
.open = ixp2000_wdt_open,
.release = ixp2000_wdt_release,
};
-static struct miscdevice ixp2000_wdt_miscdev =
-{
+static struct miscdevice ixp2000_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &ixp2000_wdt_fops,
printk(KERN_INFO "Unable to use IXP2000 watchdog due to IXP2800 erratum #25.\n");
return -EIO;
}
-
wdt_tick_rate = (*IXP2000_T1_CLD * HZ) / 256;
-
+ spin_lock_init(&wdt_lock);
return misc_register(&ixp2000_wdt_miscdev);
}
static int heartbeat = 60; /* (secs) Default is 1 minute */
static unsigned long wdt_status;
static unsigned long boot_status;
+static spin_lock_t wdt_lock;
#define WDT_TICK_RATE (IXP4XX_PERIPHERAL_BUS_CLOCK * 1000000UL)
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
-static void
-wdt_enable(void)
+static void wdt_enable(void)
{
+ spin_lock(&wdt_lock);
*IXP4XX_OSWK = IXP4XX_WDT_KEY;
*IXP4XX_OSWE = 0;
*IXP4XX_OSWT = WDT_TICK_RATE * heartbeat;
*IXP4XX_OSWE = IXP4XX_WDT_COUNT_ENABLE | IXP4XX_WDT_RESET_ENABLE;
*IXP4XX_OSWK = 0;
+ spin_unlock(&wdt_lock);
}
-static void
-wdt_disable(void)
+static void wdt_disable(void)
{
+ spin_lock(&wdt_lock);
*IXP4XX_OSWK = IXP4XX_WDT_KEY;
*IXP4XX_OSWE = 0;
*IXP4XX_OSWK = 0;
+ spin_unlock(&wdt_lock);
}
-static int
-ixp4xx_wdt_open(struct inode *inode, struct file *file)
+static int ixp4xx_wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(WDT_IN_USE, &wdt_status))
return -EBUSY;
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
-
wdt_enable();
-
return nonseekable_open(inode, file);
}
}
wdt_enable();
}
-
return len;
}
};
-static int
-ixp4xx_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long ixp4xx_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int ret = -ENOTTY;
int time;
return ret;
}
-static int
-ixp4xx_wdt_release(struct inode *inode, struct file *file)
+static int ixp4xx_wdt_release(struct inode *inode, struct file *file)
{
- if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) {
+ if (test_bit(WDT_OK_TO_CLOSE, &wdt_status))
wdt_disable();
- } else {
+ else
printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - "
"timer will not stop\n");
- }
-
clear_bit(WDT_IN_USE, &wdt_status);
clear_bit(WDT_OK_TO_CLOSE, &wdt_status);
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = ixp4xx_wdt_write,
- .ioctl = ixp4xx_wdt_ioctl,
+ .unlocked_ioctl = ixp4xx_wdt_ioctl,
.open = ixp4xx_wdt_open,
.release = ixp4xx_wdt_release,
};
return -ENODEV;
}
-
+ spin_lock_init(&wdt_lock);
+ boot_status = (*IXP4XX_OSST & IXP4XX_OSST_TIMER_WARM_RESET) ?
+ WDIOF_CARDRESET : 0;
ret = misc_register(&ixp4xx_wdt_miscdev);
if (ret == 0)
printk("IXP4xx Watchdog Timer: heartbeat %d sec\n", heartbeat);
-
- boot_status = (*IXP4XX_OSST & IXP4XX_OSST_TIMER_WARM_RESET) ?
- WDIOF_CARDRESET : 0;
-
return ret;
}
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/watchdog.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/arch/regs-timer.h>
static int nowayout = WATCHDOG_NOWAYOUT;
module_param(wdt_time, int, 0);
-MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="__MODULE_STRING(WDT_DEFAULT_TIME) ")");
+MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
+ __MODULE_STRING(WDT_DEFAULT_TIME) ")");
#ifdef CONFIG_WATCHDOG_NOWAYOUT
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#endif
static unsigned long ks8695wdt_busy;
+static spinlock_t ks8695_lock;
/* ......................................................................... */
/*
* Disable the watchdog.
*/
-static void inline ks8695_wdt_stop(void)
+static inline void ks8695_wdt_stop(void)
{
unsigned long tmcon;
+ spin_lock(&ks8695_lock);
/* disable timer0 */
tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON);
__raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON);
+ spin_unlock(&ks8695_lock);
}
/*
* Enable and reset the watchdog.
*/
-static void inline ks8695_wdt_start(void)
+static inline void ks8695_wdt_start(void)
{
unsigned long tmcon;
unsigned long tval = wdt_time * CLOCK_TICK_RATE;
+ spin_lock(&ks8695_lock);
/* disable timer0 */
tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON);
__raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON);
/* re-enable timer0 */
tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON);
__raw_writel(tmcon | TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON);
+ spin_unlock(&ks8695_lock);
}
/*
* Reload the watchdog timer. (ie, pat the watchdog)
*/
-static void inline ks8695_wdt_reload(void)
+static inline void ks8695_wdt_reload(void)
{
unsigned long tmcon;
+ spin_lock(&ks8695_lock);
/* disable, then re-enable timer0 */
tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON);
__raw_writel(tmcon & ~TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON);
__raw_writel(tmcon | TMCON_T0EN, KS8695_TMR_VA + KS8695_TMCON);
+ spin_unlock(&ks8695_lock);
}
/*
if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
return -EINVAL;
- /* Set new watchdog time. It will be used when ks8695_wdt_start() is called. */
+ /* Set new watchdog time. It will be used when
+ ks8695_wdt_start() is called. */
wdt_time = new_time;
return 0;
}
*/
static int ks8695_wdt_close(struct inode *inode, struct file *file)
{
+ /* Disable the watchdog when file is closed */
if (!nowayout)
- ks8695_wdt_stop(); /* Disable the watchdog when file is closed */
-
+ ks8695_wdt_stop();
clear_bit(0, &ks8695wdt_busy);
return 0;
}
/*
* Handle commands from user-space.
*/
-static int ks8695_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long ks8695_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_value;
- switch(cmd) {
- case WDIOC_KEEPALIVE:
- ks8695_wdt_reload(); /* pat the watchdog */
- return 0;
-
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ks8695_wdt_info, sizeof(ks8695_wdt_info)) ? -EFAULT : 0;
-
- case WDIOC_SETTIMEOUT:
- if (get_user(new_value, p))
- return -EFAULT;
-
- if (ks8695_wdt_settimeout(new_value))
- return -EINVAL;
-
- /* Enable new time value */
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ ks8695_wdt_reload(); /* pat the watchdog */
+ return 0;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ks8695_wdt_info,
+ sizeof(ks8695_wdt_info)) ? -EFAULT : 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_value, p))
+ return -EFAULT;
+ if (ks8695_wdt_settimeout(new_value))
+ return -EINVAL;
+ /* Enable new time value */
+ ks8695_wdt_start();
+ /* Return current value */
+ return put_user(wdt_time, p);
+ case WDIOC_GETTIMEOUT:
+ return put_user(wdt_time, p);
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_SETOPTIONS:
+ if (get_user(new_value, p))
+ return -EFAULT;
+ if (new_value & WDIOS_DISABLECARD)
+ ks8695_wdt_stop();
+ if (new_value & WDIOS_ENABLECARD)
ks8695_wdt_start();
-
- /* Return current value */
- return put_user(wdt_time, p);
-
- case WDIOC_GETTIMEOUT:
- return put_user(wdt_time, p);
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
- case WDIOC_SETOPTIONS:
- if (get_user(new_value, p))
- return -EFAULT;
-
- if (new_value & WDIOS_DISABLECARD)
- ks8695_wdt_stop();
- if (new_value & WDIOS_ENABLECARD)
- ks8695_wdt_start();
- return 0;
-
- default:
- return -ENOTTY;
+ return 0;
+ default:
+ return -ENOTTY;
}
}
/*
* Pat the watchdog whenever device is written to.
*/
-static ssize_t ks8695_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t ks8695_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
ks8695_wdt_reload(); /* pat the watchdog */
return len;
static const struct file_operations ks8695wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .ioctl = ks8695_wdt_ioctl,
+ .unlocked_ioctl = ks8695_wdt_ioctl,
.open = ks8695_wdt_open,
.release = ks8695_wdt_close,
.write = ks8695_wdt_write,
if (res)
return res;
- printk("KS8695 Watchdog Timer enabled (%d seconds%s)\n", wdt_time, nowayout ? ", nowayout" : "");
+ printk(KERN_INFO "KS8695 Watchdog Timer enabled (%d seconds%s)\n",
+ wdt_time, nowayout ? ", nowayout" : "");
return 0;
}
static int __init ks8695_wdt_init(void)
{
- /* Check that the heartbeat value is within range; if not reset to the default */
+ spin_lock_init(&ks8695_lock);
+ /* Check that the heartbeat value is within range;
+ if not reset to the default */
if (ks8695_wdt_settimeout(wdt_time)) {
ks8695_wdt_settimeout(WDT_DEFAULT_TIME);
- pr_info("ks8695_wdt: wdt_time value must be 1 <= wdt_time <= %i, using %d\n", wdt_time, WDT_MAX_TIME);
+ pr_info("ks8695_wdt: wdt_time value must be 1 <= wdt_time <= %i, using %d\n",
+ wdt_time, WDT_MAX_TIME);
}
-
return platform_driver_register(&ks8695wdt_driver);
}
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* ports */
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#define PFX "machzwd"
* 3 = GEN_SCI
* defaults to GEN_RESET (0)
*/
-static int action = 0;
+static int action;
module_param(action, int, 0);
MODULE_PARM_DESC(action, "after watchdog resets, generate: 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI");
static int zf_action = GEN_RESET;
static unsigned long zf_is_open;
static char zf_expect_close;
-static DEFINE_SPINLOCK(zf_lock);
static DEFINE_SPINLOCK(zf_port_lock);
static DEFINE_TIMER(zf_timer, zf_ping, 0, 0);
-static unsigned long next_heartbeat = 0;
+static unsigned long next_heartbeat;
/* timeout for user land heart beat (10 seconds) */
static inline void zf_set_timer(unsigned short new, unsigned char n)
{
- switch(n){
- case WD1:
- zf_writew(COUNTER_1, new);
- case WD2:
- zf_writeb(COUNTER_2, new > 0xff ? 0xff : new);
- default:
- return;
+ switch (n) {
+ case WD1:
+ zf_writew(COUNTER_1, new);
+ case WD2:
+ zf_writeb(COUNTER_2, new > 0xff ? 0xff : new);
+ default:
+ return;
}
}
zf_writeb(COUNTER_2, 0xff);
- if(time_before(jiffies, next_heartbeat)){
-
+ if (time_before(jiffies, next_heartbeat)) {
dprintk("time_before: %ld\n", next_heartbeat - jiffies);
-
/*
* reset event is activated by transition from 0 to 1 on
* RESET_WD1 bit and we assume that it is already zero...
spin_unlock_irqrestore(&zf_port_lock, flags);
mod_timer(&zf_timer, jiffies + ZF_HW_TIMEO);
- }else{
+ } else
printk(KERN_CRIT PFX ": I will reset your machine\n");
- }
}
static ssize_t zf_write(struct file *file, const char __user *buf, size_t count,
loff_t *ppos)
{
/* See if we got the magic character */
- if(count){
-
+ if (count) {
/*
* no need to check for close confirmation
* no way to disable watchdog ;)
*/
if (!nowayout) {
size_t ofs;
-
/*
* note: just in case someone wrote the magic character
* five months ago...
zf_expect_close = 0;
/* now scan */
- for (ofs = 0; ofs != count; ofs++){
+ for (ofs = 0; ofs != count; ofs++) {
char c;
if (get_user(c, buf + ofs))
return -EFAULT;
- if (c == 'V'){
+ if (c == 'V') {
zf_expect_close = 42;
dprintk("zf_expect_close = 42\n");
}
*/
next_heartbeat = jiffies + ZF_USER_TIMEO;
dprintk("user ping at %ld\n", jiffies);
-
}
-
return count;
}
-static int zf_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long zf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
if (copy_to_user(argp, &zf_info, sizeof(zf_info)))
return -EFAULT;
break;
-
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, p);
-
case WDIOC_KEEPALIVE:
zf_ping(0);
break;
-
default:
return -ENOTTY;
}
-
return 0;
}
static int zf_open(struct inode *inode, struct file *file)
{
- spin_lock(&zf_lock);
- if(test_and_set_bit(0, &zf_is_open)) {
- spin_unlock(&zf_lock);
+ if (test_and_set_bit(0, &zf_is_open))
return -EBUSY;
- }
-
if (nowayout)
__module_get(THIS_MODULE);
-
- spin_unlock(&zf_lock);
-
zf_timer_on();
-
return nonseekable_open(inode, file);
}
static int zf_close(struct inode *inode, struct file *file)
{
- if(zf_expect_close == 42){
+ if (zf_expect_close == 42)
zf_timer_off();
- } else {
+ else {
del_timer(&zf_timer);
printk(KERN_ERR PFX ": device file closed unexpectedly. Will not stop the WDT!\n");
}
-
- spin_lock(&zf_lock);
clear_bit(0, &zf_is_open);
- spin_unlock(&zf_lock);
-
zf_expect_close = 0;
-
return 0;
}
static int zf_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code == SYS_DOWN || code == SYS_HALT){
+ if (code == SYS_DOWN || code == SYS_HALT)
zf_timer_off();
- }
-
return NOTIFY_DONE;
}
-
-
-
static const struct file_operations zf_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = zf_write,
- .ioctl = zf_ioctl,
- .open = zf_open,
- .release = zf_close,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = zf_write,
+ .unlocked_ioctl = zf_ioctl,
+ .open = zf_open,
+ .release = zf_close,
};
static struct miscdevice zf_miscdev = {
.name = "watchdog",
.fops = &zf_fops,
};
-
+
/*
* The device needs to learn about soft shutdowns in order to
{
int ret;
- printk(KERN_INFO PFX ": MachZ ZF-Logic Watchdog driver initializing.\n");
+ printk(KERN_INFO PFX
+ ": MachZ ZF-Logic Watchdog driver initializing.\n");
ret = zf_get_ZFL_version();
- if ((!ret) || (ret == 0xffff)) {
+ if (!ret || ret == 0xffff) {
printk(KERN_WARNING PFX ": no ZF-Logic found\n");
return -ENODEV;
}
- if((action <= 3) && (action >= 0)){
- zf_action = zf_action>>action;
- } else
+ if (action <= 3 && action >= 0)
+ zf_action = zf_action >> action;
+ else
action = 0;
zf_show_action(action);
- if(!request_region(ZF_IOBASE, 3, "MachZ ZFL WDT")){
+ if (!request_region(ZF_IOBASE, 3, "MachZ ZFL WDT")) {
printk(KERN_ERR "cannot reserve I/O ports at %d\n",
ZF_IOBASE);
ret = -EBUSY;
}
ret = register_reboot_notifier(&zf_notifier);
- if(ret){
+ if (ret) {
printk(KERN_ERR "can't register reboot notifier (err=%d)\n",
ret);
goto no_reboot;
}
ret = misc_register(&zf_miscdev);
- if (ret){
+ if (ret) {
printk(KERN_ERR "can't misc_register on minor=%d\n",
WATCHDOG_MINOR);
goto no_misc;
* - support for one more type board
*
* Version 0.5 (2001/12/14) Matt Domsch <Matt_Domsch@dell.com>
- * - added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
+ * - added nowayout module option to override
+ * CONFIG_WATCHDOG_NOWAYOUT
*
* Version 0.6 (2002/04/12): Rob Radez <rob@osinvestor.com>
* - make mixcomwd_opened unsigned,
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
/*
* We have two types of cards that can be probed:
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void mixcomwd_ping(void)
{
- outb_p(55,watchdog_port);
+ outb_p(55, watchdog_port);
return;
}
static void mixcomwd_timerfun(unsigned long d)
{
mixcomwd_ping();
-
mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
}
static int mixcomwd_open(struct inode *inode, struct file *file)
{
- if(test_and_set_bit(0,&mixcomwd_opened)) {
+ if (test_and_set_bit(0, &mixcomwd_opened))
return -EBUSY;
- }
+
mixcomwd_ping();
- if (nowayout) {
+ if (nowayout)
/*
* fops_get() code via open() has already done
* a try_module_get() so it is safe to do the
* __module_get().
*/
__module_get(THIS_MODULE);
- } else {
- if(mixcomwd_timer_alive) {
+ else {
+ if (mixcomwd_timer_alive) {
del_timer(&mixcomwd_timer);
- mixcomwd_timer_alive=0;
+ mixcomwd_timer_alive = 0;
}
}
return nonseekable_open(inode, file);
static int mixcomwd_release(struct inode *inode, struct file *file)
{
if (expect_close == 42) {
- if(mixcomwd_timer_alive) {
- printk(KERN_ERR PFX "release called while internal timer alive");
+ if (mixcomwd_timer_alive) {
+ printk(KERN_ERR PFX
+ "release called while internal timer alive");
return -EBUSY;
}
- mixcomwd_timer_alive=1;
+ mixcomwd_timer_alive = 1;
mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
- } else {
- printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
- }
+ } else
+ printk(KERN_CRIT PFX
+ "WDT device closed unexpectedly. WDT will not stop!\n");
- clear_bit(0,&mixcomwd_opened);
- expect_close=0;
+ clear_bit(0, &mixcomwd_opened);
+ expect_close = 0;
return 0;
}
-static ssize_t mixcomwd_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
+static ssize_t mixcomwd_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
{
- if(len)
- {
+ if (len) {
if (!nowayout) {
size_t i;
return len;
}
-static int mixcomwd_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mixcomwd_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
.identity = "MixCOM watchdog",
};
- switch(cmd)
- {
- case WDIOC_GETSTATUS:
- status=mixcomwd_opened;
- if (!nowayout) {
- status|=mixcomwd_timer_alive;
- }
- if (copy_to_user(p, &status, sizeof(int))) {
- return -EFAULT;
- }
- break;
- case WDIOC_GETBOOTSTATUS:
- if (copy_to_user(p, &status, sizeof(int))) {
- return -EFAULT;
- }
- break;
- case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident))) {
- return -EFAULT;
- }
- break;
- case WDIOC_KEEPALIVE:
- mixcomwd_ping();
- break;
- default:
- return -ENOTTY;
+ switch (cmd) {
+ case WDIOC_GETSTATUS:
+ status = mixcomwd_opened;
+ if (!nowayout)
+ status |= mixcomwd_timer_alive;
+ return put_user(status, p);
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
+ case WDIOC_KEEPALIVE:
+ mixcomwd_ping();
+ break;
+ default:
+ return -ENOTTY;
}
return 0;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = mixcomwd_write,
- .ioctl = mixcomwd_ioctl,
+ .unlocked_ioctl = mixcomwd_ioctl,
.open = mixcomwd_open,
.release = mixcomwd_release,
};
{
int id;
- if (!request_region(port, 1, "MixCOM watchdog")) {
+ if (!request_region(port, 1, "MixCOM watchdog"))
return 0;
- }
- id=inb_p(port);
- if (card_id==MIXCOM_ID)
+ id = inb_p(port);
+ if (card_id == MIXCOM_ID)
id &= 0x3f;
- if (id!=card_id) {
+ if (id != card_id) {
release_region(port, 1);
return 0;
}
static int __init mixcomwd_init(void)
{
- int i;
- int ret;
- int found=0;
+ int i, ret, found = 0;
for (i = 0; !found && mixcomwd_io_info[i].ioport != 0; i++) {
if (checkcard(mixcomwd_io_info[i].ioport,
}
if (!found) {
- printk(KERN_ERR PFX "No card detected, or port not available.\n");
+ printk(KERN_ERR PFX
+ "No card detected, or port not available.\n");
return -ENODEV;
}
ret = misc_register(&mixcomwd_miscdev);
- if (ret)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ if (ret) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto error_misc_register_watchdog;
}
- printk(KERN_INFO "MixCOM watchdog driver v%s, watchdog port at 0x%3x\n",
- VERSION, watchdog_port);
+ printk(KERN_INFO
+ "MixCOM watchdog driver v%s, watchdog port at 0x%3x\n",
+ VERSION, watchdog_port);
return 0;
static void __exit mixcomwd_exit(void)
{
if (!nowayout) {
- if(mixcomwd_timer_alive) {
+ if (mixcomwd_timer_alive) {
printk(KERN_WARNING PFX "I quit now, hardware will"
" probably reboot!\n");
del_timer_sync(&mixcomwd_timer);
- mixcomwd_timer_alive=0;
+ mixcomwd_timer_alive = 0;
}
}
misc_deregister(&mixcomwd_miscdev);
- release_region(watchdog_port,1);
+ release_region(watchdog_port, 1);
}
module_init(mixcomwd_init);
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/of_platform.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <asm/mpc52xx.h>
/* set timeout, with maximum prescaler */
out_be32(&wdt->regs->count, 0x0 | wdt->count);
/* enable watchdog */
- out_be32(&wdt->regs->mode, GPT_MODE_CE | GPT_MODE_WDT | GPT_MODE_MS_TIMER);
+ out_be32(&wdt->regs->mode, GPT_MODE_CE | GPT_MODE_WDT |
+ GPT_MODE_MS_TIMER);
spin_unlock(&wdt->io_lock);
return 0;
{
spin_lock(&wdt->io_lock);
/* writing A5 to OCPW resets the watchdog */
- out_be32(&wdt->regs->mode, 0xA5000000 | (0xffffff & in_be32(&wdt->regs->mode)));
+ out_be32(&wdt->regs->mode, 0xA5000000 |
+ (0xffffff & in_be32(&wdt->regs->mode)));
spin_unlock(&wdt->io_lock);
return 0;
}
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = "mpc5200 watchdog on GPT0",
};
-static int mpc5200_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mpc5200_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
struct mpc5200_wdt *wdt = file->private_data;
int __user *data = (int __user *)arg;
switch (cmd) {
case WDIOC_GETSUPPORT:
ret = copy_to_user(data, &mpc5200_wdt_info,
- sizeof(mpc5200_wdt_info));
+ sizeof(mpc5200_wdt_info));
if (ret)
ret = -EFAULT;
break;
}
return ret;
}
+
static int mpc5200_wdt_open(struct inode *inode, struct file *file)
{
/* /dev/watchdog can only be opened once */
};
/* module operations */
-static int mpc5200_wdt_probe(struct of_device *op, const struct of_device_id *match)
+static int mpc5200_wdt_probe(struct of_device *op,
+ const struct of_device_id *match)
{
struct mpc5200_wdt *wdt;
int err;
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/watchdog.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
struct mpc83xx_wdt {
__be32 res0;
static u16 timeout = 0xffff;
module_param(timeout, ushort, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in ticks. (0<timeout<65536, default=65535");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in ticks. (0<timeout<65536, default=65535");
static int reset = 1;
module_param(reset, bool, 0);
-MODULE_PARM_DESC(reset, "Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset");
+MODULE_PARM_DESC(reset,
+ "Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset");
/*
* We always prescale, but if someone really doesn't want to they can set this
return 0;
}
-static int mpc83xx_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mpc83xx_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = mpc83xx_wdt_write,
- .ioctl = mpc83xx_wdt_ioctl,
+ .unlocked_ioctl = mpc83xx_wdt_ioctl,
.open = mpc83xx_wdt_open,
.release = mpc83xx_wdt_release,
};
goto err_out;
}
- wd_base = ioremap(r->start, sizeof (struct mpc83xx_wdt));
-
+ wd_base = ioremap(r->start, sizeof(struct mpc83xx_wdt));
if (wd_base == NULL) {
ret = -ENOMEM;
goto err_out;
#include <linux/module.h>
#include <linux/watchdog.h>
#include <asm/8xx_immap.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#include <syslib/m8xx_wdt.h>
static unsigned long wdt_opened;
static int wdt_status;
+static spinlock_t wdt_lock;
static void mpc8xx_wdt_handler_disable(void)
{
volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t*)IMAP_ADDR)->im_sit.sit_piscr;
+ piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
if (!m8xx_has_internal_rtc)
m8xx_wdt_stop_timer();
else
out_be32(piscr, in_be32(piscr) & ~(PISCR_PIE | PISCR_PTE));
-
printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler deactivated\n");
}
static void mpc8xx_wdt_handler_enable(void)
{
volatile uint __iomem *piscr;
- piscr = (uint *)&((immap_t*)IMAP_ADDR)->im_sit.sit_piscr;
+ piscr = (uint *)&((immap_t *)IMAP_ADDR)->im_sit.sit_piscr;
if (!m8xx_has_internal_rtc)
m8xx_wdt_install_timer();
else
out_be32(piscr, in_be32(piscr) | PISCR_PIE | PISCR_PTE);
-
printk(KERN_NOTICE "mpc8xx_wdt: keep-alive handler activated\n");
}
{
if (test_and_set_bit(0, &wdt_opened))
return -EBUSY;
-
m8xx_wdt_reset();
mpc8xx_wdt_handler_disable();
-
return nonseekable_open(inode, file);
}
static int mpc8xx_wdt_release(struct inode *inode, struct file *file)
{
m8xx_wdt_reset();
-
#if !defined(CONFIG_WATCHDOG_NOWAYOUT)
mpc8xx_wdt_handler_enable();
#endif
-
clear_bit(0, &wdt_opened);
-
return 0;
}
-static ssize_t mpc8xx_wdt_write(struct file *file, const char *data, size_t len,
- loff_t * ppos)
+static ssize_t mpc8xx_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
- if (len)
+ if (len) {
+ spin_lock(&wdt_lock);
m8xx_wdt_reset();
-
+ spin_unlock(&wdt_lock);
+ }
return len;
}
-static int mpc8xx_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mpc8xx_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int timeout;
static struct watchdog_info info = {
return -EOPNOTSUPP;
case WDIOC_KEEPALIVE:
+ spin_lock(&wdt_lock);
m8xx_wdt_reset();
wdt_status |= WDIOF_KEEPALIVEPING;
+ spin_unlock(&wdt_lock);
break;
case WDIOC_SETTIMEOUT:
return -EOPNOTSUPP;
case WDIOC_GETTIMEOUT:
+ spin_lock(&wdt_lock);
timeout = m8xx_wdt_get_timeout();
+ spin_unlock(&wdt_lock);
if (put_user(timeout, (int *)arg))
return -EFAULT;
break;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = mpc8xx_wdt_write,
- .ioctl = mpc8xx_wdt_ioctl,
+ .unlocked_ioctl = mpc8xx_wdt_ioctl,
.open = mpc8xx_wdt_open,
.release = mpc8xx_wdt_release,
};
static int __init mpc8xx_wdt_init(void)
{
+ spin_lock_init(&wdt_lock);
return misc_register(&mpc8xx_wdt_miscdev);
}
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
+#include <linux/uaccess.h>
#include <asm/hardware/arm_twd.h>
-#include <asm/uaccess.h>
struct mpcore_wdt {
unsigned long timer_alive;
};
static struct platform_device *mpcore_wdt_dev;
-
extern unsigned int mpcore_timer_rate;
#define TIMER_MARGIN 60
static int mpcore_margin = TIMER_MARGIN;
module_param(mpcore_margin, int, 0);
-MODULE_PARM_DESC(mpcore_margin, "MPcore timer margin in seconds. (0<mpcore_margin<65536, default=" __MODULE_STRING(TIMER_MARGIN) ")");
+MODULE_PARM_DESC(mpcore_margin,
+ "MPcore timer margin in seconds. (0 < mpcore_margin < 65536, default="
+ __MODULE_STRING(TIMER_MARGIN) ")");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#define ONLY_TESTING 0
static int mpcore_noboot = ONLY_TESTING;
/* Check it really was our interrupt */
if (readl(wdt->base + TWD_WDOG_INTSTAT)) {
- dev_printk(KERN_CRIT, wdt->dev, "Triggered - Reboot ignored.\n");
-
+ dev_printk(KERN_CRIT, wdt->dev,
+ "Triggered - Reboot ignored.\n");
/* Clear the interrupt on the watchdog */
writel(1, wdt->base + TWD_WDOG_INTSTAT);
-
return IRQ_HANDLED;
}
-
return IRQ_NONE;
}
count = (mpcore_timer_rate / 256) * mpcore_margin;
/* Reload the counter */
+ spin_lock(&wdt_lock);
writel(count + wdt->perturb, wdt->base + TWD_WDOG_LOAD);
-
wdt->perturb = wdt->perturb ? 0 : 1;
+ spin_unlock(&wdt_lock);
}
static void mpcore_wdt_stop(struct mpcore_wdt *wdt)
{
+ spin_lock(&wdt_lock);
writel(0x12345678, wdt->base + TWD_WDOG_DISABLE);
writel(0x87654321, wdt->base + TWD_WDOG_DISABLE);
writel(0x0, wdt->base + TWD_WDOG_CONTROL);
+ spin_unlock(&wdt_lock);
}
static void mpcore_wdt_start(struct mpcore_wdt *wdt)
{
dev_printk(KERN_INFO, wdt->dev, "enabling watchdog.\n");
+ spin_lock(&wdt_lock);
/* This loads the count register but does NOT start the count yet */
mpcore_wdt_keepalive(wdt);
/* Enable watchdog - prescale=256, watchdog mode=1, enable=1 */
writel(0x0000FF09, wdt->base + TWD_WDOG_CONTROL);
}
+ spin_unlock(&wdt_lock);
}
static int mpcore_wdt_set_heartbeat(int t)
* Shut off the timer.
* Lock it in if it's a module and we set nowayout
*/
- if (wdt->expect_close == 42) {
+ if (wdt->expect_close == 42)
mpcore_wdt_stop(wdt);
- } else {
- dev_printk(KERN_CRIT, wdt->dev, "unexpected close, not stopping watchdog!\n");
+ else {
+ dev_printk(KERN_CRIT, wdt->dev,
+ "unexpected close, not stopping watchdog!\n");
mpcore_wdt_keepalive(wdt);
}
clear_bit(0, &wdt->timer_alive);
return 0;
}
-static ssize_t mpcore_wdt_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t mpcore_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
struct mpcore_wdt *wdt = file->private_data;
.identity = "MPcore Watchdog",
};
-static int mpcore_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mpcore_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
struct mpcore_wdt *wdt = file->private_data;
int ret;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = mpcore_wdt_write,
- .ioctl = mpcore_wdt_ioctl,
+ .unlocked_ioctl = mpcore_wdt_ioctl,
.open = mpcore_wdt_open,
.release = mpcore_wdt_release,
};
mpcore_wdt_miscdev.parent = &dev->dev;
ret = misc_register(&mpcore_wdt_miscdev);
if (ret) {
- dev_printk(KERN_ERR, _dev, "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ dev_printk(KERN_ERR, _dev,
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto err_misc;
}
- ret = request_irq(wdt->irq, mpcore_wdt_fire, IRQF_DISABLED, "mpcore_wdt", wdt);
+ ret = request_irq(wdt->irq, mpcore_wdt_fire, IRQF_DISABLED,
+ "mpcore_wdt", wdt);
if (ret) {
- dev_printk(KERN_ERR, _dev, "cannot register IRQ%d for watchdog\n", wdt->irq);
+ dev_printk(KERN_ERR, _dev,
+ "cannot register IRQ%d for watchdog\n", wdt->irq);
goto err_irq;
}
*/
if (mpcore_wdt_set_heartbeat(mpcore_margin)) {
mpcore_wdt_set_heartbeat(TIMER_MARGIN);
- printk(KERN_INFO "mpcore_margin value must be 0<mpcore_margin<65536, using %d\n",
+ printk(KERN_INFO "mpcore_margin value must be 0 < mpcore_margin < 65536, using %d\n",
TIMER_MARGIN);
}
/*
* Driver for the MTX-1 Watchdog.
*
- * (C) Copyright 2005 4G Systems <info@4g-systems.biz>, All Rights Reserved.
+ * (C) Copyright 2005 4G Systems <info@4g-systems.biz>,
+ * All Rights Reserved.
* http://www.4g-systems.biz
*
* (C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
#include <linux/jiffies.h>
#include <linux/watchdog.h>
#include <linux/platform_device.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/gpio.h>
#include <asm/mach-au1x00/au1000.h>
-#include <asm/gpio.h>
#define MTX1_WDT_INTERVAL (5 * HZ)
static struct {
struct completion stop;
+ spinlock_t lock;
int running;
struct timer_list timer;
int queue;
{
u32 tmp;
+ spin_lock(&mtx1_wdt_device.lock);
if (mtx1_wdt_device.running)
ticks--;
/*
tmp = au_readl(GPIO2_DIR);
tmp = (tmp & ~(1 << mtx1_wdt_device.gpio)) |
((~tmp) & (1 << mtx1_wdt_device.gpio));
- au_writel (tmp, GPIO2_DIR);
+ au_writel(tmp, GPIO2_DIR);
if (mtx1_wdt_device.queue && ticks)
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
- else {
+ else
complete(&mtx1_wdt_device.stop);
- }
+ spin_unlock(&mtx1_wdt_device.lock);
}
static void mtx1_wdt_reset(void)
static void mtx1_wdt_start(void)
{
+ spin_lock_irqsave(&mtx1_wdt_device.lock, flags);
if (!mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 1;
gpio_set_value(mtx1_wdt_device.gpio, 1);
mod_timer(&mtx1_wdt_device.timer, jiffies + MTX1_WDT_INTERVAL);
}
mtx1_wdt_device.running++;
+ spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);
}
static int mtx1_wdt_stop(void)
{
+ spin_lock_irqsave(&mtx1_wdt_device.lock, flags);
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
gpio_set_value(mtx1_wdt_device.gpio, 0);
}
-
ticks = mtx1_wdt_device.default_ticks;
-
+ spin_unlock_irqrestore(&mtx1_wdt_device.lock, flags);
return 0;
}
{
if (test_and_set_bit(0, &mtx1_wdt_device.inuse))
return -EBUSY;
-
return nonseekable_open(inode, file);
}
return 0;
}
-static int mtx1_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long mtx1_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
+ int __user *p = (int __user *)argp;
unsigned int value;
- static struct watchdog_info ident =
- {
+ static const struct watchdog_info ident = {
.options = WDIOF_CARDRESET,
.identity = "MTX-1 WDT",
};
- switch(cmd) {
- case WDIOC_KEEPALIVE:
- mtx1_wdt_reset();
- break;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- if ( copy_to_user(argp, &value, sizeof(int)) )
- return -EFAULT;
- break;
- case WDIOC_GETSUPPORT:
- if ( copy_to_user(argp, &ident, sizeof(ident)) )
- return -EFAULT;
- break;
- case WDIOC_SETOPTIONS:
- if ( copy_from_user(&value, argp, sizeof(int)) )
- return -EFAULT;
- switch(value) {
- case WDIOS_ENABLECARD:
- mtx1_wdt_start();
- break;
- case WDIOS_DISABLECARD:
- return mtx1_wdt_stop();
- default:
- return -EINVAL;
- }
- break;
- default:
- return -ENOTTY;
+ switch (cmd) {
+ case WDIOC_KEEPALIVE:
+ mtx1_wdt_reset();
+ break;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ put_user(0, p);
+ break;
+ case WDIOC_GETSUPPORT:
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
+ case WDIOC_SETOPTIONS:
+ if (get_user(value, p))
+ return -EFAULT;
+ if (value & WDIOS_ENABLECARD)
+ mtx1_wdt_start();
+ else if (value & WDIOS_DISABLECARD)
+ mtx1_wdt_stop();
+ else
+ return -EINVAL;
+ return 0;
+ default:
+ return -ENOTTY;
}
return 0;
}
-static ssize_t mtx1_wdt_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
+static ssize_t mtx1_wdt_write(struct file *file, const char *buf,
+ size_t count, loff_t *ppos)
{
if (!count)
return -EIO;
-
mtx1_wdt_reset();
return count;
}
static const struct file_operations mtx1_wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
- .ioctl = mtx1_wdt_ioctl,
+ .unlocked_ioctl = mtx1_wdt_ioctl,
.open = mtx1_wdt_open,
.write = mtx1_wdt_write,
.release = mtx1_wdt_release
mtx1_wdt_device.gpio = pdev->resource[0].start;
- if ((ret = misc_register(&mtx1_wdt_misc)) < 0) {
- printk(KERN_ERR " mtx-1_wdt : failed to register\n");
- return ret;
- }
-
+ spin_lock_init(&mtx1_wdt_device.lock);
init_completion(&mtx1_wdt_device.stop);
mtx1_wdt_device.queue = 0;
-
clear_bit(0, &mtx1_wdt_device.inuse);
-
setup_timer(&mtx1_wdt_device.timer, mtx1_wdt_trigger, 0L);
-
mtx1_wdt_device.default_ticks = ticks;
+ ret = misc_register(&mtx1_wdt_misc);
+ if (ret < 0) {
+ printk(KERN_ERR " mtx-1_wdt : failed to register\n");
+ return ret;
+ }
mtx1_wdt_start();
-
printk(KERN_INFO "MTX-1 Watchdog driver\n");
-
return 0;
}
static int mtx1_wdt_remove(struct platform_device *pdev)
{
+ /* FIXME: do we need to lock this test ? */
if (mtx1_wdt_device.queue) {
mtx1_wdt_device.queue = 0;
wait_for_completion(&mtx1_wdt_device.stop);
* and services the watchdog.
*
* Derived from mpc8xx_wdt.c, with the following copyright.
- *
+ *
* 2002 (c) Florian Schirmer <jolt@tuxbox.org> 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
#include <linux/platform_device.h>
#include <linux/mv643xx.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define MV64x60_WDT_WDC_OFFSET 0
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static int mv64x60_wdt_toggle_wdc(int enabled_predicate, int field_shift)
{
}
static ssize_t mv64x60_wdt_write(struct file *file, const char __user *data,
- size_t len, loff_t * ppos)
+ size_t len, loff_t *ppos)
{
if (len) {
if (!nowayout) {
for (i = 0; i != len; i++) {
char c;
- if(get_user(c, data + i))
+ if (get_user(c, data + i))
return -EFAULT;
if (c == 'V')
expect_close = 42;
return len;
}
-static int mv64x60_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long mv64x60_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int timeout;
int options;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = mv64x60_wdt_write,
- .ioctl = mv64x60_wdt_ioctl,
+ .unlocked_ioctl = mv64x60_wdt_ioctl,
.open = mv64x60_wdt_open,
.release = mv64x60_wdt_release,
};
#include <linux/clk.h>
#include <linux/bitops.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/hardware.h>
+#include </io.h>
+#include <linux/uaccess.h>
+#include <linux/hardware.h>
#include <asm/arch/prcm.h>
MODULE_PARM_DESC(timer_margin, "initial watchdog timeout (in seconds)");
static int omap_wdt_users;
-static struct clk *armwdt_ck = NULL;
-static struct clk *mpu_wdt_ick = NULL;
-static struct clk *mpu_wdt_fck = NULL;
+static struct clk *armwdt_ck;
+static struct clk *mpu_wdt_ick;
+static struct clk *mpu_wdt_fck;
static unsigned int wdt_trgr_pattern = 0x1234;
+static spinlock_t wdt_lock;
static void omap_wdt_ping(void)
{
return 0;
}
-static ssize_t
-omap_wdt_write(struct file *file, const char __user *data,
+static ssize_t omap_wdt_write(struct file *file, const char __user *data,
size_t len, loff_t *ppos)
{
/* Refresh LOAD_TIME. */
- if (len)
+ if (len) {
+ spin_lock(&wdt_lock);
omap_wdt_ping();
+ spin_unlock(&wdt_lock);
+ }
return len;
}
-static int
-omap_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long omap_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int new_margin;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.identity = "OMAP Watchdog",
.options = WDIOF_SETTIMEOUT,
.firmware_version = 0,
return put_user(omap_prcm_get_reset_sources(),
(int __user *)arg);
case WDIOC_KEEPALIVE:
+ spin_lock(&wdt_lock);
omap_wdt_ping();
+ spin_unlock(&wdt_lock);
return 0;
case WDIOC_SETTIMEOUT:
if (get_user(new_margin, (int __user *)arg))
return -EFAULT;
omap_wdt_adjust_timeout(new_margin);
+ spin_lock(&wdt_lock);
omap_wdt_disable();
omap_wdt_set_timeout();
omap_wdt_enable();
omap_wdt_ping();
+ spin_unlock(&wdt_lock);
/* Fall */
case WDIOC_GETTIMEOUT:
return put_user(timer_margin, (int __user *)arg);
static const struct file_operations omap_wdt_fops = {
.owner = THIS_MODULE,
.write = omap_wdt_write,
- .ioctl = omap_wdt_ioctl,
+ .unlocked_ioctl = omap_wdt_ioctl,
.open = omap_wdt_open,
.release = omap_wdt_release,
};
static int __init omap_wdt_init(void)
{
+ spin_lock_init(&wdt_lock);
return platform_driver_register(&omap_wdt_driver);
}
#include <linux/spinlock.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* #define DEBUG 1 */
static int io = 0x2E; /* Address used on Portwell Boards */
-static int timeout = DEFAULT_TIMEOUT; /* timeout value */
-static unsigned long timer_enabled = 0; /* is the timer enabled? */
+static int timeout = DEFAULT_TIMEOUT; /* timeout value */
+static unsigned long timer_enabled; /* is the timer enabled? */
-static char expect_close; /* is the close expected? */
+static char expect_close; /* is the close expected? */
-static DEFINE_SPINLOCK(io_lock);/* to guard the watchdog from io races */
+static DEFINE_SPINLOCK(io_lock); /* to guard us from io races */
static int nowayout = WATCHDOG_NOWAYOUT;
/* Select pins for Watchdog output */
-static inline void pc87413_select_wdt_out (void)
+static inline void pc87413_select_wdt_out(void)
{
unsigned int cr_data = 0;
outb_p(SIOCFG2, WDT_INDEX_IO_PORT);
- cr_data = inb (WDT_DATA_IO_PORT);
+ cr_data = inb(WDT_DATA_IO_PORT);
cr_data |= 0x80; /* Set Bit7 to 1*/
outb_p(SIOCFG2, WDT_INDEX_IO_PORT);
outb_p(cr_data, WDT_DATA_IO_PORT);
#ifdef DEBUG
- printk(KERN_INFO DPFX "Select multiple pin,pin55,as WDT output:"
- " Bit7 to 1: %d\n", cr_data);
+ printk(KERN_INFO DPFX
+ "Select multiple pin,pin55,as WDT output: Bit7 to 1: %d\n",
+ cr_data);
#endif
}
static inline void pc87413_enable_swc(void)
{
- unsigned int cr_data=0;
+ unsigned int cr_data = 0;
/* Step 2: Enable SWC functions */
addr_l = inb(WDT_DATA_IO_PORT);
swc_base_addr = (addr_h << 8) + addr_l;
-
#ifdef DEBUG
- printk(KERN_INFO DPFX "Read SWC I/O Base Address: low %d, high %d,"
- " res %d\n", addr_l, addr_h, swc_base_addr);
+ printk(KERN_INFO DPFX
+ "Read SWC I/O Base Address: low %d, high %d, res %d\n",
+ addr_l, addr_h, swc_base_addr);
#endif
-
return swc_base_addr;
}
static inline void pc87413_swc_bank3(unsigned int swc_base_addr)
{
/* Step 4: Select Bank3 of SWC */
-
outb_p(inb(swc_base_addr + 0x0f) | 0x03, swc_base_addr + 0x0f);
-
#ifdef DEBUG
printk(KERN_INFO DPFX "Select Bank3 of SWC\n");
#endif
char pc87413_time)
{
/* Step 5: Programm WDTO, Twd. */
-
outb_p(pc87413_time, swc_base_addr + WDTO);
-
#ifdef DEBUG
printk(KERN_INFO DPFX "Set WDTO to %d minutes\n", pc87413_time);
#endif
static inline void pc87413_enable_wden(unsigned int swc_base_addr)
{
/* Step 6: Enable WDEN */
-
- outb_p(inb (swc_base_addr + WDCTL) | 0x01, swc_base_addr + WDCTL);
-
+ outb_p(inb(swc_base_addr + WDCTL) | 0x01, swc_base_addr + WDCTL);
#ifdef DEBUG
printk(KERN_INFO DPFX "Enable WDEN\n");
#endif
static inline void pc87413_enable_sw_wd_tren(unsigned int swc_base_addr)
{
/* Enable SW_WD_TREN */
-
- outb_p(inb (swc_base_addr + WDCFG) | 0x80, swc_base_addr + WDCFG);
-
+ outb_p(inb(swc_base_addr + WDCFG) | 0x80, swc_base_addr + WDCFG);
#ifdef DEBUG
printk(KERN_INFO DPFX "Enable SW_WD_TREN\n");
#endif
static inline void pc87413_disable_sw_wd_tren(unsigned int swc_base_addr)
{
/* Disable SW_WD_TREN */
-
- outb_p(inb (swc_base_addr + WDCFG) & 0x7f, swc_base_addr + WDCFG);
-
+ outb_p(inb(swc_base_addr + WDCFG) & 0x7f, swc_base_addr + WDCFG);
#ifdef DEBUG
printk(KERN_INFO DPFX "pc87413 - Disable SW_WD_TREN\n");
#endif
static inline void pc87413_enable_sw_wd_trg(unsigned int swc_base_addr)
{
/* Enable SW_WD_TRG */
-
- outb_p(inb (swc_base_addr + WDCTL) | 0x80, swc_base_addr + WDCTL);
-
+ outb_p(inb(swc_base_addr + WDCTL) | 0x80, swc_base_addr + WDCTL);
#ifdef DEBUG
printk(KERN_INFO DPFX "pc87413 - Enable SW_WD_TRG\n");
#endif
static inline void pc87413_disable_sw_wd_trg(unsigned int swc_base_addr)
{
/* Disable SW_WD_TRG */
-
- outb_p(inb (swc_base_addr + WDCTL) & 0x7f, swc_base_addr + WDCTL);
-
+ outb_p(inb(swc_base_addr + WDCTL) & 0x7f, swc_base_addr + WDCTL);
#ifdef DEBUG
printk(KERN_INFO DPFX "Disable SW_WD_TRG\n");
#endif
/* Reload and activate timer */
pc87413_refresh();
- printk(KERN_INFO MODNAME "Watchdog enabled. Timeout set to"
- " %d minute(s).\n", timeout);
+ printk(KERN_INFO MODNAME
+ "Watchdog enabled. Timeout set to %d minute(s).\n", timeout);
return nonseekable_open(inode, file);
}
if (expect_close == 42) {
pc87413_disable();
- printk(KERN_INFO MODNAME "Watchdog disabled,"
- " sleeping again...\n");
+ printk(KERN_INFO MODNAME
+ "Watchdog disabled, sleeping again...\n");
} else {
- printk(KERN_CRIT MODNAME "Unexpected close, not stopping"
- " watchdog!\n");
+ printk(KERN_CRIT MODNAME
+ "Unexpected close, not stopping watchdog!\n");
pc87413_refresh();
}
-
clear_bit(0, &timer_enabled);
expect_close = 0;
-
return 0;
}
/* reset expect flag */
expect_close = 0;
- /* scan to see whether or not we got the magic character */
+ /* 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))
/**
* pc87413_ioctl:
- * @inode: inode of the device
* @file: file handle to the device
* @cmd: watchdog command
* @arg: argument pointer
* querying capabilities and current status.
*/
-static int pc87413_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long pc87413_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int new_timeout;
static struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
- WDIOF_SETTIMEOUT |
- WDIOF_MAGICCLOSE,
+ WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "PC87413(HF/F) watchdog"
};
uarg.i = (int __user *)arg;
- switch(cmd) {
- default:
- return -ENOTTY;
-
- case WDIOC_GETSUPPORT:
- return copy_to_user(uarg.ident, &ident,
- sizeof(ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- return put_user(pc87413_status(), uarg.i);
-
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, uarg.i);
-
- case WDIOC_KEEPALIVE:
- pc87413_refresh();
+ switch (cmd) {
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(uarg.ident, &ident,
+ sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ return put_user(pc87413_status(), uarg.i);
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, uarg.i);
+ case WDIOC_KEEPALIVE:
+ pc87413_refresh();
#ifdef DEBUG
- printk(KERN_INFO DPFX "keepalive\n");
+ printk(KERN_INFO DPFX "keepalive\n");
#endif
- return 0;
-
- case WDIOC_SETTIMEOUT:
- if (get_user(new_timeout, uarg.i))
- return -EFAULT;
-
- // the API states this is given in secs
- new_timeout /= 60;
-
- if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
- return -EINVAL;
-
- timeout = new_timeout;
- pc87413_refresh();
-
- // fall through and return the new timeout...
-
- case WDIOC_GETTIMEOUT:
-
- new_timeout = timeout * 60;
-
- return put_user(new_timeout, uarg.i);
-
- case WDIOC_SETOPTIONS:
- {
- int options, retval = -EINVAL;
-
- if (get_user(options, uarg.i))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- pc87413_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- pc87413_enable();
- retval = 0;
- }
-
- return retval;
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_timeout, uarg.i))
+ return -EFAULT;
+ /* the API states this is given in secs */
+ new_timeout /= 60;
+ if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
+ return -EINVAL;
+ timeout = new_timeout;
+ pc87413_refresh();
+ /* fall through and return the new timeout... */
+ case WDIOC_GETTIMEOUT:
+ new_timeout = timeout * 60;
+ return put_user(new_timeout, uarg.i);
+ case WDIOC_SETOPTIONS:
+ {
+ int options, retval = -EINVAL;
+ if (get_user(options, uarg.i))
+ return -EFAULT;
+ if (options & WDIOS_DISABLECARD) {
+ pc87413_disable();
+ retval = 0;
}
+ if (options & WDIOS_ENABLECARD) {
+ pc87413_enable();
+ retval = 0;
+ }
+ return retval;
+ }
+ default:
+ return -ENOTTY;
}
}
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
- {
/* Turn the card off */
pc87413_disable();
- }
return NOTIFY_DONE;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = pc87413_write,
- .ioctl = pc87413_ioctl,
+ .unlocked_ioctl = pc87413_ioctl,
.open = pc87413_open,
.release = pc87413_release,
};
-static struct notifier_block pc87413_notifier =
-{
+static struct notifier_block pc87413_notifier = {
.notifier_call = pc87413_notify_sys,
};
-static struct miscdevice pc87413_miscdev=
-{
+static struct miscdevice pc87413_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &pc87413_fops
{
int ret;
- printk(KERN_INFO PFX "Version " VERSION " at io 0x%X\n", WDT_INDEX_IO_PORT);
+ printk(KERN_INFO PFX "Version " VERSION " at io 0x%X\n",
+ WDT_INDEX_IO_PORT);
/* request_region(io, 2, "pc87413"); */
ret = register_reboot_notifier(&pc87413_notifier);
if (ret != 0) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
}
ret = misc_register(&pc87413_miscdev);
-
if (ret != 0) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&pc87413_notifier);
return ret;
}
-
printk(KERN_INFO PFX "initialized. timeout=%d min \n", timeout);
-
pc87413_enable();
-
return 0;
}
static void __exit pc87413_exit(void)
{
/* Stop the timer before we leave */
- if (!nowayout)
- {
+ if (!nowayout) {
pc87413_disable();
printk(KERN_INFO MODNAME "Watchdog disabled.\n");
}
MODULE_PARM_DESC(io, MODNAME " I/O port (default: " __MODULE_STRING(io) ").");
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in minutes (default=" __MODULE_STRING(timeout) ").");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in minutes (default="
+ __MODULE_STRING(timeout) ").");
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
* fairly useless proc entry.
* 990610 removed said useless proc code for the merge <alan>
* 000403 Removed last traces of proc code. <davej>
- * 011214 Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT <Matt_Domsch@dell.com>
+ * 011214 Added nowayout module option to override
+ * CONFIG_WATCHDOG_NOWAYOUT <Matt_Domsch@dell.com>
* Added timeout module option to override default
*/
/*
* A bells and whistles driver is available from http://www.pcwd.de/
- * More info available at http://www.berkprod.com/ or http://www.pcwatchdog.com/
+ * More info available at http://www.berkprod.com/ or
+ * http://www.pcwatchdog.com/
*/
#include <linux/module.h> /* For module specific items */
#include <linux/isa.h> /* For isa devices */
#include <linux/ioport.h> /* For io-port access */
#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
-
-#include <asm/uaccess.h> /* For copy_to_user/put_user/... */
-#include <asm/io.h> /* For inb/outb/... */
+#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
+#include <linux/io.h> /* For inb/outb/... */
/* Module and version information */
#define WATCHDOG_VERSION "1.20"
#define WD_REVC_WTRP 0x01 /* Watchdog Trip status */
#define WD_REVC_HRBT 0x02 /* Watchdog Heartbeat */
#define WD_REVC_TTRP 0x04 /* Temperature Trip status */
-#define WD_REVC_RL2A 0x08 /* Relay 2 activated by on-board processor */
+#define WD_REVC_RL2A 0x08 /* Relay 2 activated by
+ on-board processor */
#define WD_REVC_RL1A 0x10 /* Relay 1 active */
#define WD_REVC_R2DS 0x40 /* Relay 2 disable */
#define WD_REVC_RLY2 0x80 /* Relay 2 activated? */
/* Port 2 : Control Status #2 */
#define WD_WDIS 0x10 /* Watchdog Disabled */
#define WD_ENTP 0x20 /* Watchdog Enable Temperature Trip */
-#define WD_SSEL 0x40 /* Watchdog Switch Select (1:SW1 <-> 0:SW2) */
+#define WD_SSEL 0x40 /* Watchdog Switch Select
+ (1:SW1 <-> 0:SW2) */
#define WD_WCMD 0x80 /* Watchdog Command Mode */
/* max. time we give an ISA watchdog card to process a command */
static atomic_t open_allowed = ATOMIC_INIT(1);
static char expect_close;
static int temp_panic;
-static struct { /* this is private data for each ISA-PC watchdog card */
+
+/* this is private data for each ISA-PC watchdog card */
+static struct {
char fw_ver_str[6]; /* The cards firmware version */
int revision; /* The card's revision */
- int supports_temp; /* Wether or not the card has a temperature device */
- int command_mode; /* Wether or not the card is in command mode */
+ int supports_temp; /* Whether or not the card has
+ a temperature device */
+ int command_mode; /* Whether or not the card is in
+ command mode */
int boot_status; /* The card's boot status */
int io_addr; /* The cards I/O address */
spinlock_t io_lock; /* the lock for io operations */
#define DEBUG 2 /* print fancy stuff too */
static int debug = QUIET;
module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
+MODULE_PARM_DESC(debug,
+ "Debug level: 0=Quiet, 1=Verbose, 2=Debug (default=0)");
-#define WATCHDOG_HEARTBEAT 0 /* default heartbeat = delay-time from dip-switches */
+/* default heartbeat = delay-time from dip-switches */
+#define WATCHDOG_HEARTBEAT 0
static int heartbeat = WATCHDOG_HEARTBEAT;
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<=heartbeat<=7200 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2 <= heartbeat <= 7200 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Internal functions
if (port0 == last_port0)
break; /* Data is stable */
- udelay (250);
+ udelay(250);
}
if (debug >= DEBUG)
static int set_command_mode(void)
{
- int i, found=0, count=0;
+ int i, found = 0, count = 0;
/* Set the card into command mode */
spin_lock(&pcwd_private.io_lock);
ten = send_isa_command(CMD_ISA_VERSION_TENTH);
hund = send_isa_command(CMD_ISA_VERSION_HUNDRETH);
minor = send_isa_command(CMD_ISA_VERSION_MINOR);
- sprintf(pcwd_private.fw_ver_str, "%c.%c%c%c", one, ten, hund, minor);
+ sprintf(pcwd_private.fw_ver_str, "%c.%c%c%c",
+ one, ten, hund, minor);
}
unset_command_mode();
static inline int pcwd_get_option_switches(void)
{
- int option_switches=0;
+ int option_switches = 0;
if (set_command_mode()) {
/* Get switch settings */
/* Get some extra info from the hardware (in command/debug/diag mode) */
if (pcwd_private.revision == PCWD_REVISION_A)
- printk(KERN_INFO PFX "ISA-PC Watchdog (REV.A) detected at port 0x%04x\n", pcwd_private.io_addr);
+ printk(KERN_INFO PFX
+ "ISA-PC Watchdog (REV.A) detected at port 0x%04x\n",
+ pcwd_private.io_addr);
else if (pcwd_private.revision == PCWD_REVISION_C) {
pcwd_get_firmware();
printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port 0x%04x (Firmware version: %s)\n",
printk(KERN_INFO PFX "Previous reboot was caused by the card\n");
if (pcwd_private.boot_status & WDIOF_OVERHEAT) {
- printk(KERN_EMERG PFX "Card senses a CPU Overheat. Panicking!\n");
- printk(KERN_EMERG PFX "CPU Overheat\n");
+ printk(KERN_EMERG PFX
+ "Card senses a CPU Overheat. Panicking!\n");
+ printk(KERN_EMERG PFX
+ "CPU Overheat\n");
}
if (pcwd_private.boot_status == 0)
- printk(KERN_INFO PFX "No previous trip detected - Cold boot or reset\n");
+ printk(KERN_INFO PFX
+ "No previous trip detected - Cold boot or reset\n");
}
static void pcwd_timer_ping(unsigned long data)
/* If we got a heartbeat pulse within the WDT_INTERVAL
* we agree to ping the WDT */
- if(time_before(jiffies, pcwd_private.next_heartbeat)) {
+ if (time_before(jiffies, pcwd_private.next_heartbeat)) {
/* Ping the watchdog */
spin_lock(&pcwd_private.io_lock);
if (pcwd_private.revision == PCWD_REVISION_A) {
- /* Rev A cards are reset by setting the WD_WDRST bit in register 1 */
+ /* Rev A cards are reset by setting the
+ WD_WDRST bit in register 1 */
wdrst_stat = inb_p(pcwd_private.io_addr);
wdrst_stat &= 0x0F;
wdrst_stat |= WD_WDRST;
spin_unlock(&pcwd_private.io_lock);
} else {
- printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
+ printk(KERN_WARNING PFX
+ "Heartbeat lost! Will not ping the watchdog\n");
}
}
static int pcwd_set_heartbeat(int t)
{
- if ((t < 2) || (t > 7200)) /* arbitrary upper limit */
+ if (t < 2 || t > 7200) /* arbitrary upper limit */
return -EINVAL;
heartbeat = t;
{
int control_status;
- *status=0;
+ *status = 0;
spin_lock(&pcwd_private.io_lock);
if (pcwd_private.revision == PCWD_REVISION_A)
/* Rev A cards return status information from
if (control_status & WD_T110) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
- printk(KERN_INFO PFX "Temperature overheat trip!\n");
+ printk(KERN_INFO PFX
+ "Temperature overheat trip!\n");
kernel_power_off();
- /* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
}
} else {
if (control_status & WD_REVC_TTRP) {
*status |= WDIOF_OVERHEAT;
if (temp_panic) {
- printk(KERN_INFO PFX "Temperature overheat trip!\n");
+ printk(KERN_INFO PFX
+ "Temperature overheat trip!\n");
kernel_power_off();
- /* or should we just do a: panic(PFX "Temperature overheat trip!\n"); */
}
}
}
spin_lock(&pcwd_private.io_lock);
if (debug >= VERBOSE)
- printk(KERN_INFO PFX "clearing watchdog trip status\n");
+ printk(KERN_INFO PFX
+ "clearing watchdog trip status\n");
control_status = inb_p(pcwd_private.io_addr + 1);
if (debug >= DEBUG) {
- printk(KERN_DEBUG PFX "status was: 0x%02x\n", control_status);
+ printk(KERN_DEBUG PFX "status was: 0x%02x\n",
+ control_status);
printk(KERN_DEBUG PFX "sending: 0x%02x\n",
(control_status & WD_REVC_R2DS));
}
/* clear reset status & Keep Relay 2 disable state as it is */
- outb_p((control_status & WD_REVC_R2DS), pcwd_private.io_addr + 1);
+ outb_p((control_status & WD_REVC_R2DS),
+ pcwd_private.io_addr + 1);
spin_unlock(&pcwd_private.io_lock);
}
* /dev/watchdog handling
*/
-static int pcwd_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long pcwd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int rv;
int status;
.identity = "PCWD",
};
- switch(cmd) {
+ switch (cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
- if(copy_to_user(argp, &ident, sizeof(ident)))
+ if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
return 0;
return put_user(temperature, argp);
case WDIOC_SETOPTIONS:
- if (pcwd_private.revision == PCWD_REVISION_C)
- {
- if(copy_from_user(&rv, argp, sizeof(int)))
+ if (pcwd_private.revision == PCWD_REVISION_C) {
+ if (get_user(rv, argp))
return -EFAULT;
- if (rv & WDIOS_DISABLECARD)
- {
- return pcwd_stop();
+ if (rv & WDIOS_DISABLECARD) {
+ status = pcwd_stop();
+ if (status < 0)
+ return status;
}
-
- if (rv & WDIOS_ENABLECARD)
- {
- return pcwd_start();
+ if (rv & WDIOS_ENABLECARD) {
+ status = pcwd_start();
+ if (status < 0)
+ return status;
}
-
if (rv & WDIOS_TEMPPANIC)
- {
temp_panic = 1;
- }
}
return -EINVAL;
static int pcwd_open(struct inode *inode, struct file *file)
{
- if (!atomic_dec_and_test(&open_allowed) ) {
- if (debug >= VERBOSE)
- printk(KERN_ERR PFX "Attempt to open already opened device.\n");
- atomic_inc( &open_allowed );
+ if (test_and_set_bit(0, &open_allowed))
return -EBUSY;
- }
-
if (nowayout)
__module_get(THIS_MODULE);
-
/* Activate */
pcwd_start();
pcwd_keepalive();
static int pcwd_close(struct inode *inode, struct file *file)
{
- if (expect_close == 42) {
+ if (expect_close == 42)
pcwd_stop();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
pcwd_keepalive();
}
expect_close = 0;
- atomic_inc( &open_allowed );
+ clear_bit(0, &open_allowed);
return 0;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = pcwd_write,
- .ioctl = pcwd_ioctl,
+ .unlocked_ioctl = pcwd_ioctl,
.open = pcwd_open,
.release = pcwd_close,
};
* presumes a floating bus reads as 0xff. */
if ((inb(pcwd_private.io_addr + 2) == 0xFF) ||
(inb(pcwd_private.io_addr + 3) == 0xFF))
- r=PCWD_REVISION_A;
+ r = PCWD_REVISION_A;
spin_unlock(&pcwd_private.io_lock);
return r;
*/
static int __devinit pcwd_isa_match(struct device *dev, unsigned int id)
{
- int base_addr=pcwd_ioports[id];
+ int base_addr = pcwd_ioports[id];
int port0, last_port0; /* Reg 0, in case it's REV A */
int port1, last_port1; /* Register 1 for REV C cards */
int i;
printk(KERN_DEBUG PFX "pcwd_isa_match id=%d\n",
id);
- if (!request_region (base_addr, 4, "PCWD")) {
+ if (!request_region(base_addr, 4, "PCWD")) {
printk(KERN_INFO PFX "Port 0x%04x unavailable\n", base_addr);
return 0;
}
}
}
}
- release_region (base_addr, 4);
+ release_region(base_addr, 4);
return retval;
}
cards_found++;
if (cards_found == 1)
- printk(KERN_INFO PFX "v%s Ken Hollis (kenji@bitgate.com)\n", WD_VER);
+ printk(KERN_INFO PFX "v%s Ken Hollis (kenji@bitgate.com)\n",
+ WD_VER);
if (cards_found > 1) {
printk(KERN_ERR PFX "This driver only supports 1 device\n");
/* Check card's revision */
pcwd_private.revision = get_revision();
- if (!request_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4, "PCWD")) {
+ if (!request_region(pcwd_private.io_addr,
+ (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4, "PCWD")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
pcwd_private.io_addr);
- ret=-EIO;
+ ret = -EIO;
goto error_request_region;
}
if (heartbeat == 0)
heartbeat = heartbeat_tbl[(pcwd_get_option_switches() & 0x07)];
- /* Check that the heartbeat value is within it's range ; if not reset to the default */
+ /* Check that the heartbeat value is within it's range;
+ if not reset to the default */
if (pcwd_set_heartbeat(heartbeat)) {
pcwd_set_heartbeat(WATCHDOG_HEARTBEAT);
- printk(KERN_INFO PFX "heartbeat value must be 2<=heartbeat<=7200, using %d\n",
- WATCHDOG_HEARTBEAT);
+ printk(KERN_INFO PFX
+ "heartbeat value must be 2 <= heartbeat <= 7200, using %d\n",
+ WATCHDOG_HEARTBEAT);
}
if (pcwd_private.supports_temp) {
ret = misc_register(&temp_miscdev);
if (ret) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- TEMP_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ TEMP_MINOR, ret);
goto error_misc_register_temp;
}
}
ret = misc_register(&pcwd_miscdev);
if (ret) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto error_misc_register_watchdog;
}
if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
error_misc_register_temp:
- release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ release_region(pcwd_private.io_addr,
+ (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
error_request_region:
pcwd_private.io_addr = 0x0000;
cards_found--;
misc_deregister(&pcwd_miscdev);
if (pcwd_private.supports_temp)
misc_deregister(&temp_miscdev);
- release_region(pcwd_private.io_addr, (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
+ release_region(pcwd_private.io_addr,
+ (pcwd_private.revision == PCWD_REVISION_A) ? 2 : 4);
pcwd_private.io_addr = 0x0000;
cards_found--;
#include <linux/spinlock.h>
#include <asm/hardware.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define MODULE_NAME "PNX4008-WDT: "
return nonseekable_open(inode, file);
}
-static ssize_t
-pnx4008_wdt_write(struct file *file, const char *data, size_t len,
- loff_t * ppos)
+static ssize_t pnx4008_wdt_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
if (len) {
if (!nowayout) {
return len;
}
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
.options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE |
WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
.identity = "PNX4008 Watchdog",
};
-static int
-pnx4008_wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long pnx4008_wdt_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int ret = -ENOTTY;
int time;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = pnx4008_wdt_write,
- .ioctl = pnx4008_wdt_ioctl,
+ .unlocked_ioctl = pnx4008_wdt_ioctl,
.open = pnx4008_wdt_open,
.release = pnx4008_wdt_release,
};
#include <linux/notifier.h>
#include <linux/miscdevice.h>
#include <linux/watchdog.h>
-#include <asm/io.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/atomic.h>
#include <asm/processor.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/rm9k-ocd.h>
static void wdt_gpi_set_timeout(unsigned int);
static int wdt_gpi_open(struct inode *, struct file *);
static int wdt_gpi_release(struct inode *, struct file *);
-static ssize_t wdt_gpi_write(struct file *, const char __user *, size_t, loff_t *);
+static ssize_t wdt_gpi_write(struct file *, const char __user *, size_t,
+ loff_t *);
static long wdt_gpi_ioctl(struct file *, unsigned int, unsigned long);
static int wdt_gpi_notify(struct notifier_block *, unsigned long, void *);
-static const struct resource *wdt_gpi_get_resource(struct platform_device *, const char *, unsigned int);
+static const struct resource *wdt_gpi_get_resource(struct platform_device *,
+ const char *, unsigned int);
static int __init wdt_gpi_probe(struct device *);
static int __exit wdt_gpi_remove(struct device *);
/* These are set from device resources */
-static void __iomem * wd_regs;
+static void __iomem *wd_regs;
static unsigned int wd_irq, wd_ctr;
if (expect_close) {
wdt_gpi_stop();
free_irq(wd_irq, &miscdev);
- printk(KERN_INFO "%s: watchdog stopped\n", wdt_gpi_name);
+ printk(KERN_INFO "%s: watchdog stopped\n",
+ wdt_gpi_name);
} else {
printk(KERN_CRIT "%s: unexpected close() -"
" watchdog left running\n",
return s ? 1 : 0;
}
-static long
-wdt_gpi_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
+static long wdt_gpi_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
{
long res = -ENOTTY;
const long size = _IOC_SIZE(cmd);
case WDIOC_GETSUPPORT:
wdinfo.options = nowayout ?
WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING :
- WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE;
+ WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
+ WDIOF_MAGICCLOSE;
res = __copy_to_user(argp, &wdinfo, size) ? -EFAULT : size;
break;
#include <linux/watchdog.h>
#include <linux/init.h>
#include <linux/bitops.h>
+#include <linux/uaccess.h>
#ifdef CONFIG_ARCH_PXA
#include <asm/arch/pxa-regs.h>
#endif
#include <asm/hardware.h>
-#include <asm/uaccess.h>
#define OSCR_FREQ CLOCK_TICK_RATE
*/
static int sa1100dog_open(struct inode *inode, struct file *file)
{
- if (test_and_set_bit(1,&sa1100wdt_users))
+ if (test_and_set_bit(1, &sa1100wdt_users))
return -EBUSY;
/* Activate SA1100 Watchdog timer */
static int sa1100dog_release(struct inode *inode, struct file *file)
{
printk(KERN_CRIT "WATCHDOG: Device closed - timer will not stop\n");
-
clear_bit(1, &sa1100wdt_users);
-
return 0;
}
-static ssize_t sa1100dog_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
+static ssize_t sa1100dog_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
{
if (len)
/* Refresh OSMR3 timer. */
OSMR3 = OSCR + pre_margin;
-
return len;
}
-static struct watchdog_info ident = {
- .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+static const struct watchdog_info ident = {
+ .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT
+ | WDIOF_KEEPALIVEPING,
.identity = "SA1100/PXA255 Watchdog",
};
-static int sa1100dog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long sa1100dog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int ret = -ENOTTY;
int time;
return ret;
}
-static const struct file_operations sa1100dog_fops =
-{
+static const struct file_operations sa1100dog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = sa1100dog_write,
- .ioctl = sa1100dog_ioctl,
+ .unlocked_ioctl = sa1100dog_ioctl,
.open = sa1100dog_open,
.release = sa1100dog_release,
};
-static struct miscdevice sa1100dog_miscdev =
-{
+static struct miscdevice sa1100dog_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &sa1100dog_fops,
ret = misc_register(&sa1100dog_miscdev);
if (ret == 0)
- printk("SA1100/PXA2xx Watchdog Timer: timer margin %d sec\n",
- margin);
+ printk(KERN_INFO
+ "SA1100/PXA2xx Watchdog Timer: timer margin %d sec\n",
+ margin);
return ret;
}
#include <asm/sibyte/sb1250_int.h>
#include <asm/sibyte/sb1250_scd.h>
+static DEFINE_SPINLOCK(sbwd_lock);
/*
* set the initial count value of a timer
*/
void sbwdog_set(char __iomem *wdog, unsigned long t)
{
+ spin_lock(&sbwd_lock);
__raw_writeb(0, wdog - 0x10);
__raw_writeq(t & 0x7fffffUL, wdog);
+ spin_unlock(&sbwd_lock);
}
/*
*/
void sbwdog_pet(char __iomem *wdog)
{
+ spin_lock(&sbwd_lock);
__raw_writeb(__raw_readb(wdog) | 1, wdog);
+ spin_unlock(&sbwd_lock);
}
static unsigned long sbwdog_gate; /* keeps it to one thread only */
static unsigned long timeout = 0x7fffffUL; /* useconds: 8.3ish secs. */
static int expect_close;
-static struct watchdog_info ident = {
- .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+static const struct watchdog_info ident = {
+ .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT |
+ WDIOF_KEEPALIVEPING,
.identity = "SiByte Watchdog",
};
static int sbwdog_open(struct inode *inode, struct file *file)
{
nonseekable_open(inode, file);
- if (test_and_set_bit(0, &sbwdog_gate)) {
+ if (test_and_set_bit(0, &sbwdog_gate))
return -EBUSY;
- }
__module_get(THIS_MODULE);
/*
__raw_writeb(0, user_dog);
module_put(THIS_MODULE);
} else {
- printk(KERN_CRIT "%s: Unexpected close, not stopping watchdog!\n",
- ident.identity);
+ printk(KERN_CRIT
+ "%s: Unexpected close, not stopping watchdog!\n",
+ ident.identity);
sbwdog_pet(user_dog);
}
clear_bit(0, &sbwdog_gate);
for (i = 0; i != len; i++) {
char c;
- if (get_user(c, data + i)) {
+ if (get_user(c, data + i))
return -EFAULT;
- }
- if (c == 'V') {
+ if (c == 'V')
expect_close = 42;
- }
}
sbwdog_pet(user_dog);
}
return len;
}
-static int sbwdog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long sbwdog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int ret = -ENOTTY;
unsigned long time;
case WDIOC_SETTIMEOUT:
ret = get_user(time, p);
- if (ret) {
+ if (ret)
break;
- }
time *= 1000000;
if (time > 0x7fffffUL) {
return NOTIFY_DONE;
}
-static const struct file_operations sbwdog_fops =
-{
+static const struct file_operations sbwdog_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = sbwdog_write,
- .ioctl = sbwdog_ioctl,
+ .unlocked_ioctl = sbwdog_ioctl,
.open = sbwdog_open,
.release = sbwdog_release,
};
-static struct miscdevice sbwdog_miscdev =
-{
+static struct miscdevice sbwdog_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &sbwdog_fops,
/*
* if it's the second watchdog timer, it's for those users
*/
- if (wd_cfg_reg == user_dog) {
+ if (wd_cfg_reg == user_dog)
printk(KERN_CRIT
"%s in danger of initiating system reset in %ld.%01ld seconds\n",
ident.identity, wd_init / 1000000, (wd_init / 100000) % 10);
- } else {
+ else
cfg |= 1;
- }
__raw_writeb(cfg, wd_cfg_reg);
*/
ret = register_reboot_notifier(&sbwdog_notifier);
if (ret) {
- printk (KERN_ERR "%s: cannot register reboot notifier (err=%d)\n",
- ident.identity, ret);
+ printk(KERN_ERR
+ "%s: cannot register reboot notifier (err=%d)\n",
+ ident.identity, ret);
return ret;
}
/*
* get the resources
*/
- ret = misc_register(&sbwdog_miscdev);
- if (ret == 0) {
- printk(KERN_INFO "%s: timeout is %ld.%ld secs\n", ident.identity,
- timeout / 1000000, (timeout / 100000) % 10);
- }
ret = request_irq(1, sbwdog_interrupt, IRQF_DISABLED | IRQF_SHARED,
ident.identity, (void *)user_dog);
if (ret) {
- printk(KERN_ERR "%s: failed to request irq 1 - %d\n", ident.identity,
- ret);
- misc_deregister(&sbwdog_miscdev);
+ printk(KERN_ERR "%s: failed to request irq 1 - %d\n",
+ ident.identity, ret);
+ return ret;
}
+ ret = misc_register(&sbwdog_miscdev);
+ if (ret == 0) {
+ printk(KERN_INFO "%s: timeout is %ld.%ld secs\n",
+ ident.identity,
+ timeout / 1000000, (timeout / 100000) % 10);
+ } else
+ free_irq(1, (void *)user_dog);
return ret;
}
module_param(timeout, ulong, 0);
MODULE_PARM_DESC(timeout,
- "Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)");
+ "Watchdog timeout in microseconds (max/default 8388607 or 8.3ish secs)");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
* example code that can be put in a platform code area to utilize the
* first watchdog timer for the kernels own purpose.
- void
-platform_wd_setup(void)
+void platform_wd_setup(void)
{
int ret;
- ret = request_irq(0, sbwdog_interrupt, IRQF_DISABLED | IRQF_SHARED,
+ ret = request_irq(1, sbwdog_interrupt, IRQF_DISABLED | IRQF_SHARED,
"Kernel Watchdog", IOADDR(A_SCD_WDOG_CFG_0));
if (ret) {
- printk(KERN_CRIT "Watchdog IRQ zero(0) failed to be requested - %d\n",
- ret);
+ printk(KERN_CRIT
+ "Watchdog IRQ zero(0) failed to be requested - %d\n", ret);
}
}
*
* 12/4 - 2000 [Initial revision]
* 25/4 - 2000 Added /dev/watchdog support
- * 09/5 - 2001 [smj@oro.net] fixed fop_write to "return 1" on success
+ * 09/5 - 2001 [smj@oro.net] fixed fop_write to "return 1"
+ * on success
* 12/4 - 2002 [rob@osinvestor.com] eliminate fop_read
* fix possible wdt_is_open race
* add CONFIG_WATCHDOG_NOWAYOUT support
* remove lock_kernel/unlock_kernel pairs
* added KERN_* to printk's
* got rid of extraneous comments
- * changed watchdog_info to correctly reflect what the driver offers
- * added WDIOC_GETSTATUS, WDIOC_GETBOOTSTATUS, WDIOC_SETTIMEOUT,
- * WDIOC_GETTIMEOUT, and WDIOC_SETOPTIONS ioctls
+ * changed watchdog_info to correctly reflect what
+ * the driver offers
+ * added WDIOC_GETSTATUS, WDIOC_GETBOOTSTATUS,
+ * WDIOC_SETTIMEOUT, WDIOC_GETTIMEOUT, and
+ * WDIOC_SETOPTIONS ioctls
* 09/8 - 2003 [wim@iguana.be] cleanup of trailing spaces
* use module_param
- * made timeout (the emulated heartbeat) a module_param
+ * made timeout (the emulated heartbeat) a
+ * module_param
* made the keepalive ping an internal subroutine
* made wdt_stop and wdt_start module params
* added extra printk's for startup problems
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
#define OUR_NAME "sbc60xxwdt"
*/
#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
-static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+static int timeout = WATCHDOG_TIMEOUT; /* in seconds, multiplied by HZ to
+ get seconds to wait for a ping */
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=3600, 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void wdt_timer_ping(unsigned long);
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
/* If we got a heartbeat pulse within the WDT_US_INTERVAL
* we agree to ping the WDT
*/
- if(time_before(jiffies, next_heartbeat))
- {
+ if (time_before(jiffies, next_heartbeat)) {
/* Ping the WDT by reading from wdt_start */
inb_p(wdt_start);
/* Re-set the timer interval */
mod_timer(&timer, jiffies + WDT_INTERVAL);
- } else {
- printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
- }
+ } else
+ printk(KERN_WARNING PFX
+ "Heartbeat lost! Will not ping the watchdog\n");
}
/*
* /dev/watchdog handling
*/
-static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count)
- {
- if (!nowayout)
- {
+ if (count) {
+ if (!nowayout) {
size_t ofs;
- /* note: just in case someone wrote the magic character
- * five months ago... */
+ /* note: just in case someone wrote the
+ magic character five months ago... */
wdt_expect_close = 0;
- /* scan to see whether or not we got the magic character */
- for(ofs = 0; ofs != count; ofs++)
- {
+ /* scan to see whether or not we got the
+ magic character */
+ for (ofs = 0; ofs != count; ofs++) {
char c;
- if(get_user(c, buf+ofs))
+ if (get_user(c, buf+ofs))
return -EFAULT;
- if(c == 'V')
+ if (c == 'V')
wdt_expect_close = 42;
}
}
- /* Well, anyhow someone wrote to us, we should return that favour */
+ /* Well, anyhow someone wrote to us, we should
+ return that favour */
wdt_keepalive();
}
return count;
}
-static int fop_open(struct inode * inode, struct file * file)
+static int fop_open(struct inode *inode, struct file *file)
{
/* Just in case we're already talking to someone... */
- if(test_and_set_bit(0, &wdt_is_open))
+ if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
if (nowayout)
return nonseekable_open(inode, file);
}
-static int fop_close(struct inode * inode, struct file * file)
+static int fop_close(struct inode *inode, struct file *file)
{
- if(wdt_expect_close == 42)
+ if (wdt_expect_close == 42)
wdt_turnoff();
else {
del_timer(&timer);
- printk(KERN_CRIT PFX "device file closed unexpectedly. Will not stop the WDT!\n");
+ printk(KERN_CRIT PFX
+ "device file closed unexpectedly. Will not stop the WDT!\n");
}
clear_bit(0, &wdt_is_open);
wdt_expect_close = 0;
return 0;
}
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident=
- {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static const struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "SBC60xx",
};
- switch(cmd)
+ switch (cmd) {
+ default:
+ return -ENOTTY;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident))? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ wdt_keepalive();
+ return 0;
+ case WDIOC_SETOPTIONS:
{
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- wdt_keepalive();
- return 0;
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if(get_user(new_options, p))
- return -EFAULT;
-
- if(new_options & WDIOS_DISABLECARD) {
- wdt_turnoff();
- retval = 0;
- }
-
- if(new_options & WDIOS_ENABLECARD) {
- wdt_startup();
- retval = 0;
- }
-
- return retval;
+ int new_options, retval = -EINVAL;
+ if (get_user(new_options, p))
+ return -EFAULT;
+ if (new_options & WDIOS_DISABLECARD) {
+ wdt_turnoff();
+ retval = 0;
}
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
-
- if(get_user(new_timeout, p))
- return -EFAULT;
-
- if(new_timeout < 1 || new_timeout > 3600) /* arbitrary upper limit */
- return -EINVAL;
-
- timeout = new_timeout;
- wdt_keepalive();
- /* Fall through */
+ if (new_options & WDIOS_ENABLECARD) {
+ wdt_startup();
+ retval = 0;
}
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ /* arbitrary upper limit */
+ if (new_timeout < 1 || new_timeout > 3600)
+ return -EINVAL;
+
+ timeout = new_timeout;
+ wdt_keepalive();
+ /* Fall through */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
}
}
.write = fop_write,
.open = fop_open,
.release = fop_close,
- .ioctl = fop_ioctl,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
* turn the timebomb registers off.
*/
-static struct notifier_block wdt_notifier=
-{
+static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
unregister_reboot_notifier(&wdt_notifier);
if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
- release_region(wdt_stop,1);
- release_region(wdt_start,1);
+ release_region(wdt_stop, 1);
+ release_region(wdt_start, 1);
}
static int __init sbc60xxwdt_init(void)
{
int rc = -EBUSY;
- if(timeout < 1 || timeout > 3600) /* arbitrary upper limit */
- {
+ if (timeout < 1 || timeout > 3600) { /* arbitrary upper limit */
timeout = WATCHDOG_TIMEOUT;
- printk(KERN_INFO PFX "timeout value must be 1<=x<=3600, using %d\n",
- timeout);
- }
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= x <= 3600, using %d\n",
+ timeout);
+ }
- if (!request_region(wdt_start, 1, "SBC 60XX WDT"))
- {
+ if (!request_region(wdt_start, 1, "SBC 60XX WDT")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_start);
rc = -EIO;
}
/* We cannot reserve 0x45 - the kernel already has! */
- if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
- {
- if (!request_region(wdt_stop, 1, "SBC 60XX WDT"))
- {
- printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
- wdt_stop);
+ if (wdt_stop != 0x45 && wdt_stop != wdt_start) {
+ if (!request_region(wdt_stop, 1, "SBC 60XX WDT")) {
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n",
+ wdt_stop);
rc = -EIO;
goto err_out_region1;
}
}
rc = register_reboot_notifier(&wdt_notifier);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region2;
}
rc = misc_register(&wdt_miscdev);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- wdt_miscdev.minor, rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ wdt_miscdev.minor, rc);
goto err_out_reboot;
}
-
printk(KERN_INFO PFX "WDT driver for 60XX single board computer initialised. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
err_out_reboot:
unregister_reboot_notifier(&wdt_notifier);
err_out_region2:
- if ((wdt_stop != 0x45) && (wdt_stop != wdt_start))
- release_region(wdt_stop,1);
+ if (wdt_stop != 0x45 && wdt_stop != wdt_start)
+ release_region(wdt_stop, 1);
err_out_region1:
- release_region(wdt_start,1);
+ release_region(wdt_start, 1);
err_out:
return rc;
}
#include <linux/reboot.h>
#include <linux/types.h>
#include <linux/watchdog.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/atomic.h>
-#include <asm/io.h>
#include <asm/system.h>
-#include <asm/uaccess.h>
#define SBC7240_PREFIX "sbc7240_wdt: "
return 0;
}
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING|
WDIOF_SETTIMEOUT|
WDIOF_MAGICCLOSE,
};
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
case WDIOC_GETSUPPORT:
- return copy_to_user
- ((void __user *)arg, &ident, sizeof(ident))
- ? -EFAULT : 0;
+ return copy_to_user((void __user *)arg, &ident, sizeof(ident))
+ ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, (int __user *)arg);
.write = fop_write,
.open = fop_open,
.release = fop_close,
- .ioctl = fop_ioctl,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/moduleparam.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
static unsigned long sbc8360_is_open;
-static DEFINE_SPINLOCK(sbc8360_lock);
static char expect_close;
#define PFX "sbc8360: "
MODULE_PARM_DESC(timeout, "Index into timeout table (0-63) (default=27 (60s))");
module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout,
- "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Kernel methods.
}
/* Userspace pings kernel driver, or requests clean close */
-static ssize_t sbc8360_write(struct file *file, const char __user * buf,
- size_t count, loff_t * ppos)
+static ssize_t sbc8360_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
static int sbc8360_open(struct inode *inode, struct file *file)
{
- spin_lock(&sbc8360_lock);
- if (test_and_set_bit(0, &sbc8360_is_open)) {
- spin_unlock(&sbc8360_lock);
+ if (test_and_set_bit(0, &sbc8360_is_open))
return -EBUSY;
- }
if (nowayout)
__module_get(THIS_MODULE);
/* Activate and ping once to start the countdown */
- spin_unlock(&sbc8360_lock);
sbc8360_activate();
sbc8360_ping();
return nonseekable_open(inode, file);
static int sbc8360_close(struct inode *inode, struct file *file)
{
- spin_lock(&sbc8360_lock);
if (expect_close == 42)
outb(0, SBC8360_ENABLE);
else
printk(KERN_CRIT PFX
- "SBC8360 device closed unexpectedly. SBC8360 will not stop!\n");
+ "SBC8360 device closed unexpectedly. SBC8360 will not stop!\n");
clear_bit(0, &sbc8360_is_open);
expect_close = 0;
- spin_unlock(&sbc8360_lock);
return 0;
}
return 0;
- out_nomisc:
+out_nomisc:
unregister_reboot_notifier(&sbc8360_notifier);
- out_noreboot:
+out_noreboot:
release_region(SBC8360_BASETIME, 1);
- out_nobasetimereg:
+out_nobasetimereg:
release_region(SBC8360_ENABLE, 1);
- out:
+out:
return res;
}
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/ioport.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define PFX "epx_c3: "
static int epx_c3_alive;
return len;
}
-static int epx_c3_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long epx_c3_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int options, retval = -EINVAL;
int __user *argp = (void __user *)arg;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = epx_c3_write,
- .ioctl = epx_c3_ioctl,
+ .unlocked_ioctl = epx_c3_ioctl,
.open = epx_c3_open,
.release = epx_c3_release,
};
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
#define OUR_NAME "sc520_wdt"
*/
#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
-static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+static int timeout = WATCHDOG_TIMEOUT;
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1 <= timeout <= 3600, 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* AMD Elan SC520 - Watchdog Timer Registers
/* If we got a heartbeat pulse within the WDT_US_INTERVAL
* we agree to ping the WDT
*/
- if(time_before(jiffies, next_heartbeat))
- {
+ if (time_before(jiffies, next_heartbeat)) {
/* Ping the WDT */
spin_lock(&wdt_spinlock);
writew(0xAAAA, wdtmrctl);
/* Re-set the timer interval */
mod_timer(&timer, jiffies + WDT_INTERVAL);
- } else {
- printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
- }
+ } else
+ printk(KERN_WARNING PFX
+ "Heartbeat lost! Will not ping the watchdog\n");
}
/*
/* buy some time (ping) */
spin_lock_irqsave(&wdt_spinlock, flags);
- dummy=readw(wdtmrctl); /* ensure write synchronization */
+ dummy = readw(wdtmrctl); /* ensure write synchronization */
writew(0xAAAA, wdtmrctl);
writew(0x5555, wdtmrctl);
/* unlock WDT = make WDT configuration register writable one time */
* /dev/watchdog handling
*/
-static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count) {
+ if (count) {
if (!nowayout) {
size_t ofs;
wdt_expect_close = 0;
/* now scan */
- for(ofs = 0; ofs != count; ofs++) {
+ for (ofs = 0; ofs != count; ofs++) {
char c;
if (get_user(c, buf + ofs))
return -EFAULT;
- if(c == 'V')
+ if (c == 'V')
wdt_expect_close = 42;
}
}
- /* Well, anyhow someone wrote to us, we should return that favour */
+ /* Well, anyhow someone wrote to us, we should
+ return that favour */
wdt_keepalive();
}
return count;
}
-static int fop_open(struct inode * inode, struct file * file)
+static int fop_open(struct inode *inode, struct file *file)
{
/* Just in case we're already talking to someone... */
- if(test_and_set_bit(0, &wdt_is_open))
+ if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
if (nowayout)
__module_get(THIS_MODULE);
return nonseekable_open(inode, file);
}
-static int fop_close(struct inode * inode, struct file * file)
+static int fop_close(struct inode *inode, struct file *file)
{
- if(wdt_expect_close == 42) {
+ if (wdt_expect_close == 42)
wdt_turnoff();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
wdt_keepalive();
}
clear_bit(0, &wdt_is_open);
return 0;
}
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static const struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "SC520",
};
- switch(cmd)
+ switch (cmd)
{
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- wdt_keepalive();
- return 0;
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if(get_user(new_options, p))
- return -EFAULT;
-
- if(new_options & WDIOS_DISABLECARD) {
- wdt_turnoff();
- retval = 0;
- }
+ default:
+ return -ENOTTY;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ wdt_keepalive();
+ return 0;
+ case WDIOC_SETOPTIONS:
+ {
+ int new_options, retval = -EINVAL;
- if(new_options & WDIOS_ENABLECARD) {
- wdt_startup();
- retval = 0;
- }
+ if (get_user(new_options, p))
+ return -EFAULT;
+
+ if (new_options & WDIOS_DISABLECARD) {
+ wdt_turnoff();
+ retval = 0;
+ }
- return retval;
+ if (new_options & WDIOS_ENABLECARD) {
+ wdt_startup();
+ retval = 0;
}
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
- if(get_user(new_timeout, p))
- return -EFAULT;
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
- if(wdt_set_heartbeat(new_timeout))
- return -EINVAL;
+ if (get_user(new_timeout, p))
+ return -EFAULT;
- wdt_keepalive();
- /* Fall through */
- }
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
+ if (wdt_set_heartbeat(new_timeout))
+ return -EINVAL;
+
+ wdt_keepalive();
+ /* Fall through */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
}
}
.write = fop_write,
.open = fop_open,
.release = fop_close,
- .ioctl = fop_ioctl,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
{
int rc = -EBUSY;
- /* Check that the timeout value is within it's range ; if not reset to the default */
+ /* Check that the timeout value is within it's range ;
+ if not reset to the default */
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
- printk(KERN_INFO PFX "timeout value must be 1<=timeout<=3600, using %d\n",
- WATCHDOG_TIMEOUT);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= timeout <= 3600, using %d\n",
+ WATCHDOG_TIMEOUT);
}
wdtmrctl = ioremap((unsigned long)(MMCR_BASE + OFFS_WDTMRCTL), 2);
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out_ioremap;
}
rc = misc_register(&wdt_miscdev);
if (rc) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, rc);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, rc);
goto err_out_notifier;
}
- printk(KERN_INFO PFX "WDT driver for SC520 initialised. timeout=%d sec (nowayout=%d)\n",
- timeout,nowayout);
+ printk(KERN_INFO PFX
+ "WDT driver for SC520 initialised. timeout=%d sec (nowayout=%d)\n",
+ timeout, nowayout);
return 0;
#include <linux/fs.h>
#include <linux/ioport.h>
#include <linux/scx200.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#define NAME "scx200_wdt"
MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
static u16 wdto_restart;
-static struct semaphore open_semaphore;
static char expect_close;
+static unsigned long open_lock;
+static DEFINE_SPINLOCK(scx_lock);
/* Bits of the WDCNFG register */
#define W_ENABLE 0x00fa /* Enable watchdog */
static void scx200_wdt_ping(void)
{
+ spin_lock(&scx_lock);
outw(wdto_restart, scx200_cb_base + SCx200_WDT_WDTO);
+ spin_unlock(&scx_lock);
}
static void scx200_wdt_update_margin(void)
printk(KERN_DEBUG NAME ": enabling watchdog timer, wdto_restart = %d\n",
wdto_restart);
+ spin_lock(&scx_lock);
outw(0, scx200_cb_base + SCx200_WDT_WDTO);
outb(SCx200_WDT_WDSTS_WDOVF, scx200_cb_base + SCx200_WDT_WDSTS);
outw(W_ENABLE, scx200_cb_base + SCx200_WDT_WDCNFG);
+ spin_unlock(&scx_lock);
scx200_wdt_ping();
}
{
printk(KERN_DEBUG NAME ": disabling watchdog timer\n");
+ spin_lock(&scx_lock);
outw(0, scx200_cb_base + SCx200_WDT_WDTO);
outb(SCx200_WDT_WDSTS_WDOVF, scx200_cb_base + SCx200_WDT_WDSTS);
outw(W_DISABLE, scx200_cb_base + SCx200_WDT_WDCNFG);
+ spin_unlock(&scx_lock);
}
static int scx200_wdt_open(struct inode *inode, struct file *file)
{
/* only allow one at a time */
- if (down_trylock(&open_semaphore))
+ if (test_and_set_bit(0, &open_lock))
return -EBUSY;
scx200_wdt_enable();
static int scx200_wdt_release(struct inode *inode, struct file *file)
{
- if (expect_close != 42) {
+ if (expect_close != 42)
printk(KERN_WARNING NAME ": watchdog device closed unexpectedly, will not disable the watchdog timer\n");
- } else if (!nowayout) {
+ else if (!nowayout)
scx200_wdt_disable();
- }
expect_close = 0;
- up(&open_semaphore);
+ clear_bit(0, &open_lock);
return 0;
}
return NOTIFY_DONE;
}
-static struct notifier_block scx200_wdt_notifier =
-{
+static struct notifier_block scx200_wdt_notifier = {
.notifier_call = scx200_wdt_notify_sys,
};
size_t len, loff_t *ppos)
{
/* check for a magic close character */
- if (len)
- {
+ if (len) {
size_t i;
scx200_wdt_ping();
return 0;
}
-static int scx200_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long scx200_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.identity = "NatSemi SCx200 Watchdog",
.firmware_version = 1,
- .options = (WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING),
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
};
int new_margin;
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
- if(copy_to_user(argp, &ident, sizeof(ident)))
+ if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
return 0;
case WDIOC_GETSTATUS:
}
static const struct file_operations scx200_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = scx200_wdt_write,
- .ioctl = scx200_wdt_ioctl,
- .open = scx200_wdt_open,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = scx200_wdt_write,
+ .unlocked_ioctl = scx200_wdt_ioctl,
+ .open = scx200_wdt_open,
.release = scx200_wdt_release,
};
static struct miscdevice scx200_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &scx200_wdt_fops,
+ .name = "watchdog",
+ .fops = &scx200_wdt_fops,
};
static int __init scx200_wdt_init(void)
scx200_wdt_update_margin();
scx200_wdt_disable();
- sema_init(&open_semaphore, 1);
-
r = register_reboot_notifier(&scx200_wdt_notifier);
if (r) {
printk(KERN_ERR NAME ": unable to register reboot notifier");
/*
Local variables:
- compile-command: "make -k -C ../.. SUBDIRS=drivers/char modules"
- c-basic-offset: 8
+ compile-command: "make -k -C ../.. SUBDIRS=drivers/char modules"
+ c-basic-offset: 8
End:
*/
#include <linux/ioport.h>
#include <linux/fs.h>
#include <linux/mm.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/watchdog.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/watchdog.h>
#define PFX "shwdt: "
static char shwdt_expect_close;
static DEFINE_TIMER(timer, sh_wdt_ping, 0, 0);
static unsigned long next_heartbeat;
+static DEFINE_SPINLOCK(shwdt_lock);
#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */
static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */
static void sh_wdt_start(void)
{
__u8 csr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdt_lock, flags);
next_heartbeat = jiffies + (heartbeat * HZ);
mod_timer(&timer, next_ping_period(clock_division_ratio));
csr &= ~RSTCSR_RSTS;
sh_wdt_write_rstcsr(csr);
#endif
+ spin_unlock_irqrestore(&wdt_lock, flags);
}
/**
static void sh_wdt_stop(void)
{
__u8 csr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdt_lock, flags);
del_timer(&timer);
csr = sh_wdt_read_csr();
csr &= ~WTCSR_TME;
sh_wdt_write_csr(csr);
+ spin_unlock_irqrestore(&wdt_lock, flags);
}
/**
*/
static inline void sh_wdt_keepalive(void)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdt_lock, flags);
next_heartbeat = jiffies + (heartbeat * HZ);
+ spin_unlock_irqrestore(&wdt_lock, flags);
}
/**
*/
static int sh_wdt_set_heartbeat(int t)
{
- if (unlikely((t < 1) || (t > 3600))) /* arbitrary upper limit */
+ unsigned long flags;
+
+ if (unlikely(t < 1 || t > 3600)) /* arbitrary upper limit */
return -EINVAL;
+ spin_lock_irqsave(&wdt_lock, flags);
heartbeat = t;
+ spin_unlock_irqrestore(&wdt_lock, flags);
return 0;
}
*/
static void sh_wdt_ping(unsigned long data)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdt_lock, flags);
if (time_before(jiffies, next_heartbeat)) {
__u8 csr;
} else
printk(KERN_WARNING PFX "Heartbeat lost! Will not ping "
"the watchdog\n");
+ spin_unlock_irqrestore(&wdt_lock, flags);
}
/**
/**
* sh_wdt_ioctl - Query Device
- * @inode: inode of device
* @file: file handle of device
* @cmd: watchdog command
* @arg: argument
* Query basic information from the device or ping it, as outlined by the
* watchdog API.
*/
-static int sh_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long sh_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int new_heartbeat;
int options, retval = -EINVAL;
switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user((struct watchdog_info *)arg,
- &sh_wdt_info,
- sizeof(sh_wdt_info)) ? -EFAULT : 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, (int *)arg);
- case WDIOC_KEEPALIVE:
- sh_wdt_keepalive();
- return 0;
- case WDIOC_SETTIMEOUT:
- if (get_user(new_heartbeat, (int *)arg))
- return -EFAULT;
-
- if (sh_wdt_set_heartbeat(new_heartbeat))
- return -EINVAL;
-
- sh_wdt_keepalive();
- /* Fall */
- case WDIOC_GETTIMEOUT:
- return put_user(heartbeat, (int *)arg);
- case WDIOC_SETOPTIONS:
- if (get_user(options, (int *)arg))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- sh_wdt_stop();
- retval = 0;
- }
+ case WDIOC_GETSUPPORT:
+ return copy_to_user((struct watchdog_info *)arg,
+ &sh_wdt_info, sizeof(sh_wdt_info)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, (int *)arg);
+ case WDIOC_KEEPALIVE:
+ sh_wdt_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_heartbeat, (int *)arg))
+ return -EFAULT;
- if (options & WDIOS_ENABLECARD) {
- sh_wdt_start();
- retval = 0;
- }
+ if (sh_wdt_set_heartbeat(new_heartbeat))
+ return -EINVAL;
- return retval;
- default:
- return -ENOTTY;
- }
+ sh_wdt_keepalive();
+ /* Fall */
+ case WDIOC_GETTIMEOUT:
+ return put_user(heartbeat, (int *)arg);
+ case WDIOC_SETOPTIONS:
+ if (get_user(options, (int *)arg))
+ return -EFAULT;
+
+ if (options & WDIOS_DISABLECARD) {
+ sh_wdt_stop();
+ retval = 0;
+ }
+
+ if (options & WDIOS_ENABLECARD) {
+ sh_wdt_start();
+ retval = 0;
+ }
+ return retval;
+ default:
+ return -ENOTTY;
+ }
return 0;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = sh_wdt_write,
- .ioctl = sh_wdt_ioctl,
+ .unlocked_ioctl = sh_wdt_ioctl,
.open = sh_wdt_open,
.release = sh_wdt_close,
.mmap = sh_wdt_mmap,
};
-static struct watchdog_info sh_wdt_info = {
+static const struct watchdog_info sh_wdt_info = {
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 1,
{
int rc;
- if ((clock_division_ratio < 0x5) || (clock_division_ratio > 0x7)) {
+ if (clock_division_ratio < 0x5 || clock_division_ratio > 0x7) {
clock_division_ratio = WTCSR_CKS_4096;
- printk(KERN_INFO PFX "clock_division_ratio value must "
- "be 0x5<=x<=0x7, using %d\n", clock_division_ratio);
+ printk(KERN_INFO PFX
+ "clock_division_ratio value must be 0x5<=x<=0x7, using %d\n",
+ clock_division_ratio);
}
rc = sh_wdt_set_heartbeat(heartbeat);
if (unlikely(rc)) {
heartbeat = WATCHDOG_HEARTBEAT;
- printk(KERN_INFO PFX "heartbeat value must "
- "be 1<=x<=3600, using %d\n", heartbeat);
+ printk(KERN_INFO PFX
+ "heartbeat value must be 1<=x<=3600, using %d\n",
+ heartbeat);
}
rc = register_reboot_notifier(&sh_wdt_notifier);
if (unlikely(rc)) {
- printk(KERN_ERR PFX "Can't register reboot notifier (err=%d)\n",
- rc);
+ printk(KERN_ERR PFX
+ "Can't register reboot notifier (err=%d)\n", rc);
return rc;
}
rc = misc_register(&sh_wdt_miscdev);
if (unlikely(rc)) {
- printk(KERN_ERR PFX "Can't register miscdev on "
- "minor=%d (err=%d)\n", sh_wdt_miscdev.minor, rc);
+ printk(KERN_ERR PFX
+ "Can't register miscdev on minor=%d (err=%d)\n",
+ sh_wdt_miscdev.minor, rc);
unregister_reboot_notifier(&sh_wdt_notifier);
return rc;
}
MODULE_PARM_DESC(clock_division_ratio, "Clock division ratio. Valid ranges are from 0x5 (1.31ms) to 0x7 (5.25ms). (default=" __MODULE_STRING(clock_division_ratio) ")");
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (1<=heartbeat<=3600, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat,
+ "Watchdog heartbeat in seconds. (1 <= heartbeat <= 3600, default="
+ __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
module_init(sh_wdt_init);
module_exit(sh_wdt_exit);
* History:
* 2003 - Created version 1.0 for Linux 2.4.x.
* 2006 - Ported to Linux 2.6, added nowayout and MAGICCLOSE
- * features. Released version 1.1
+ * features. Released version 1.1
*
* Theory of operation:
*
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
/* enable support for minutes as units? */
#define UNIT_MINUTE 1
#define MODNAME "smsc37b787_wdt: "
-#define VERSION "1.1"
+#define VERSION "1.1"
-#define IOPORT 0x3F0
+#define IOPORT 0x3F0
#define IOPORT_SIZE 2
-#define IODEV_NO 8
+#define IODEV_NO 8
-static int unit = UNIT_SECOND; /* timer's unit */
-static int timeout = 60; /* timeout value: default is 60 "units" */
-static unsigned long timer_enabled = 0; /* is the timer enabled? */
+static int unit = UNIT_SECOND; /* timer's unit */
+static int timeout = 60; /* timeout value: default is 60 "units" */
+static unsigned long timer_enabled; /* is the timer enabled? */
static char expect_close; /* is the close expected? */
static inline void open_io_config(void)
{
- outb(0x55, IOPORT);
+ outb(0x55, IOPORT);
mdelay(1);
- outb(0x55, IOPORT);
+ outb(0x55, IOPORT);
}
/* lock the IO chip */
static inline void close_io_config(void)
{
- outb(0xAA, IOPORT);
+ outb(0xAA, IOPORT);
}
/* select the IO device */
static inline void select_io_device(unsigned char devno)
{
- outb(0x07, IOPORT);
- outb(devno, IOPORT+1);
+ outb(0x07, IOPORT);
+ outb(devno, IOPORT+1);
}
/* write to the control register */
static inline void write_io_cr(unsigned char reg, unsigned char data)
{
- outb(reg, IOPORT);
- outb(data, IOPORT+1);
+ outb(reg, IOPORT);
+ outb(data, IOPORT+1);
}
/* read from the control register */
static inline char read_io_cr(unsigned char reg)
{
- outb(reg, IOPORT);
- return inb(IOPORT+1);
+ outb(reg, IOPORT);
+ return inb(IOPORT+1);
}
/* -- Medium level functions ------------------------------------*/
static inline void gpio_bit12(unsigned char reg)
{
- // -- General Purpose I/O Bit 1.2 --
- // Bit 0, In/Out: 0 = Output, 1 = Input
- // Bit 1, Polarity: 0 = No Invert, 1 = Invert
- // Bit 2, Group Enable Intr.: 0 = Disable, 1 = Enable
- // Bit 3/4, Function select: 00 = GPI/O, 01 = WDT, 10 = P17,
- // 11 = Either Edge Triggered Intr. 2
- // Bit 5/6 (Reserved)
- // Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain
- write_io_cr(0xE2, reg);
+ /* -- General Purpose I/O Bit 1.2 --
+ * Bit 0, In/Out: 0 = Output, 1 = Input
+ * Bit 1, Polarity: 0 = No Invert, 1 = Invert
+ * Bit 2, Group Enable Intr.: 0 = Disable, 1 = Enable
+ * Bit 3/4, Function select: 00 = GPI/O, 01 = WDT, 10 = P17,
+ * 11 = Either Edge Triggered Intr. 2
+ * Bit 5/6 (Reserved)
+ * Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain
+ */
+ write_io_cr(0xE2, reg);
}
static inline void gpio_bit13(unsigned char reg)
{
- // -- General Purpose I/O Bit 1.3 --
- // Bit 0, In/Out: 0 = Output, 1 = Input
- // Bit 1, Polarity: 0 = No Invert, 1 = Invert
- // Bit 2, Group Enable Intr.: 0 = Disable, 1 = Enable
- // Bit 3, Function select: 0 = GPI/O, 1 = LED
- // Bit 4-6 (Reserved)
- // Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain
- write_io_cr(0xE3, reg);
+ /* -- General Purpose I/O Bit 1.3 --
+ * Bit 0, In/Out: 0 = Output, 1 = Input
+ * Bit 1, Polarity: 0 = No Invert, 1 = Invert
+ * Bit 2, Group Enable Intr.: 0 = Disable, 1 = Enable
+ * Bit 3, Function select: 0 = GPI/O, 1 = LED
+ * Bit 4-6 (Reserved)
+ * Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain
+ */
+ write_io_cr(0xE3, reg);
}
static inline void wdt_timer_units(unsigned char new_units)
{
- // -- Watchdog timer units --
- // Bit 0-6 (Reserved)
- // Bit 7, WDT Time-out Value Units Select
- // (0 = Minutes, 1 = Seconds)
- write_io_cr(0xF1, new_units);
+ /* -- Watchdog timer units --
+ * Bit 0-6 (Reserved)
+ * Bit 7, WDT Time-out Value Units Select
+ * (0 = Minutes, 1 = Seconds)
+ */
+ write_io_cr(0xF1, new_units);
}
static inline void wdt_timeout_value(unsigned char new_timeout)
{
- // -- Watchdog Timer Time-out Value --
- // Bit 0-7 Binary coded units (0=Disabled, 1..255)
- write_io_cr(0xF2, new_timeout);
+ /* -- Watchdog Timer Time-out Value --
+ * Bit 0-7 Binary coded units (0=Disabled, 1..255)
+ */
+ write_io_cr(0xF2, new_timeout);
}
static inline void wdt_timer_conf(unsigned char conf)
{
- // -- Watchdog timer configuration --
- // Bit 0 Joystick enable: 0* = No Reset, 1 = Reset WDT upon Gameport I/O
- // Bit 1 Keyboard enable: 0* = No Reset, 1 = Reset WDT upon KBD Intr.
- // Bit 2 Mouse enable: 0* = No Reset, 1 = Reset WDT upon Mouse Intr.
- // Bit 3 Reset the timer
- // (Wrong in SMsC documentation? Given as: PowerLED Timout Enabled)
- // Bit 4-7 WDT Interrupt Mapping: (0000* = Disabled,
- // 0001=IRQ1, 0010=(Invalid), 0011=IRQ3 to 1111=IRQ15)
- write_io_cr(0xF3, conf);
+ /* -- Watchdog timer configuration --
+ * Bit 0 Joystick enable: 0* = No Reset, 1 = Reset WDT upon
+ * Gameport I/O
+ * Bit 1 Keyboard enable: 0* = No Reset, 1 = Reset WDT upon KBD Intr.
+ * Bit 2 Mouse enable: 0* = No Reset, 1 = Reset WDT upon Mouse Intr
+ * Bit 3 Reset the timer
+ * (Wrong in SMsC documentation? Given as: PowerLED Timout
+ * Enabled)
+ * Bit 4-7 WDT Interrupt Mapping: (0000* = Disabled,
+ * 0001=IRQ1, 0010=(Invalid), 0011=IRQ3 to 1111=IRQ15)
+ */
+ write_io_cr(0xF3, conf);
}
static inline void wdt_timer_ctrl(unsigned char reg)
{
- // -- Watchdog timer control --
- // Bit 0 Status Bit: 0 = Timer counting, 1 = Timeout occured
- // Bit 1 Power LED Toggle: 0 = Disable Toggle, 1 = Toggle at 1 Hz
- // Bit 2 Force Timeout: 1 = Forces WD timeout event (self-cleaning)
- // Bit 3 P20 Force Timeout enabled:
- // 0 = P20 activity does not generate the WD timeout event
- // 1 = P20 Allows rising edge of P20, from the keyboard
- // controller, to force the WD timeout event.
- // Bit 4 (Reserved)
- // -- Soft power management --
- // Bit 5 Stop Counter: 1 = Stop software power down counter
- // set via register 0xB8, (self-cleaning)
- // (Upon read: 0 = Counter running, 1 = Counter stopped)
- // Bit 6 Restart Counter: 1 = Restart software power down counter
- // set via register 0xB8, (self-cleaning)
- // Bit 7 SPOFF: 1 = Force software power down (self-cleaning)
-
- write_io_cr(0xF4, reg);
+ /* -- Watchdog timer control --
+ * Bit 0 Status Bit: 0 = Timer counting, 1 = Timeout occured
+ * Bit 1 Power LED Toggle: 0 = Disable Toggle, 1 = Toggle at 1 Hz
+ * Bit 2 Force Timeout: 1 = Forces WD timeout event (self-cleaning)
+ * Bit 3 P20 Force Timeout enabled:
+ * 0 = P20 activity does not generate the WD timeout event
+ * 1 = P20 Allows rising edge of P20, from the keyboard
+ * controller, to force the WD timeout event.
+ * Bit 4 (Reserved)
+ * -- Soft power management --
+ * Bit 5 Stop Counter: 1 = Stop software power down counter
+ * set via register 0xB8, (self-cleaning)
+ * (Upon read: 0 = Counter running, 1 = Counter stopped)
+ * Bit 6 Restart Counter: 1 = Restart software power down counter
+ * set via register 0xB8, (self-cleaning)
+ * Bit 7 SPOFF: 1 = Force software power down (self-cleaning)
+ */
+ write_io_cr(0xF4, reg);
}
/* -- Higher level functions ------------------------------------*/
static void wb_smsc_wdt_initialize(void)
{
- unsigned char old;
+ unsigned char old;
spin_lock(&io_lock);
- open_io_config();
- select_io_device(IODEV_NO);
+ open_io_config();
+ select_io_device(IODEV_NO);
- // enable the watchdog
- gpio_bit13(0x08); // Select pin 80 = LED not GPIO
- gpio_bit12(0x0A); // Set pin 79 = WDT not GPIO/Output/Polarity=Invert
+ /* enable the watchdog */
+ gpio_bit13(0x08); /* Select pin 80 = LED not GPIO */
+ gpio_bit12(0x0A); /* Set pin 79 = WDT not
+ GPIO/Output/Polarity=Invert */
+ /* disable the timeout */
+ wdt_timeout_value(0);
- // disable the timeout
- wdt_timeout_value(0);
+ /* reset control register */
+ wdt_timer_ctrl(0x00);
- // reset control register
- wdt_timer_ctrl(0x00);
-
- // reset configuration register
+ /* reset configuration register */
wdt_timer_conf(0x00);
- // read old (timer units) register
- old = read_io_cr(0xF1) & 0x7F;
- if (unit == UNIT_SECOND) old |= 0x80; // set to seconds
+ /* read old (timer units) register */
+ old = read_io_cr(0xF1) & 0x7F;
+ if (unit == UNIT_SECOND)
+ old |= 0x80; /* set to seconds */
- // set the watchdog timer units
- wdt_timer_units(old);
+ /* set the watchdog timer units */
+ wdt_timer_units(old);
- close_io_config();
+ close_io_config();
spin_unlock(&io_lock);
}
static void wb_smsc_wdt_shutdown(void)
{
spin_lock(&io_lock);
- open_io_config();
- select_io_device(IODEV_NO);
+ open_io_config();
+ select_io_device(IODEV_NO);
- // disable the watchdog
- gpio_bit13(0x09);
- gpio_bit12(0x09);
+ /* disable the watchdog */
+ gpio_bit13(0x09);
+ gpio_bit12(0x09);
- // reset watchdog config register
+ /* reset watchdog config register */
wdt_timer_conf(0x00);
- // reset watchdog control register
- wdt_timer_ctrl(0x00);
+ /* reset watchdog control register */
+ wdt_timer_ctrl(0x00);
- // disable timeout
- wdt_timeout_value(0x00);
+ /* disable timeout */
+ wdt_timeout_value(0x00);
- close_io_config();
+ close_io_config();
spin_unlock(&io_lock);
}
static void wb_smsc_wdt_set_timeout(unsigned char new_timeout)
{
spin_lock(&io_lock);
- open_io_config();
- select_io_device(IODEV_NO);
+ open_io_config();
+ select_io_device(IODEV_NO);
- // set Power LED to blink, if we enable the timeout
- wdt_timer_ctrl((new_timeout == 0) ? 0x00 : 0x02);
+ /* set Power LED to blink, if we enable the timeout */
+ wdt_timer_ctrl((new_timeout == 0) ? 0x00 : 0x02);
- // set timeout value
- wdt_timeout_value(new_timeout);
+ /* set timeout value */
+ wdt_timeout_value(new_timeout);
- close_io_config();
+ close_io_config();
spin_unlock(&io_lock);
}
static unsigned char wb_smsc_wdt_get_timeout(void)
{
- unsigned char set_timeout;
+ unsigned char set_timeout;
spin_lock(&io_lock);
- open_io_config();
- select_io_device(IODEV_NO);
- set_timeout = read_io_cr(0xF2);
- close_io_config();
+ open_io_config();
+ select_io_device(IODEV_NO);
+ set_timeout = read_io_cr(0xF2);
+ close_io_config();
spin_unlock(&io_lock);
- return set_timeout;
+ return set_timeout;
}
/* disable watchdog */
static void wb_smsc_wdt_disable(void)
{
- // set the timeout to 0 to disable the watchdog
- wb_smsc_wdt_set_timeout(0);
+ /* set the timeout to 0 to disable the watchdog */
+ wb_smsc_wdt_set_timeout(0);
}
/* enable watchdog by setting the current timeout */
static void wb_smsc_wdt_enable(void)
{
- // set the current timeout...
- wb_smsc_wdt_set_timeout(timeout);
+ /* set the current timeout... */
+ wb_smsc_wdt_set_timeout(timeout);
}
/* reset the timer */
static void wb_smsc_wdt_reset_timer(void)
{
spin_lock(&io_lock);
- open_io_config();
- select_io_device(IODEV_NO);
+ open_io_config();
+ select_io_device(IODEV_NO);
- // reset the timer
+ /* reset the timer */
wdt_timeout_value(timeout);
wdt_timer_conf(0x08);
- close_io_config();
+ close_io_config();
spin_unlock(&io_lock);
}
/* Reload and activate timer */
wb_smsc_wdt_enable();
- printk(KERN_INFO MODNAME "Watchdog enabled. Timeout set to %d %s.\n", timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
+ printk(KERN_INFO MODNAME
+ "Watchdog enabled. Timeout set to %d %s.\n",
+ timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
return nonseekable_open(inode, file);
}
/* Shut off the timer. */
if (expect_close == 42) {
- wb_smsc_wdt_disable();
- printk(KERN_INFO MODNAME "Watchdog disabled, sleeping again...\n");
+ wb_smsc_wdt_disable();
+ printk(KERN_INFO MODNAME
+ "Watchdog disabled, sleeping again...\n");
} else {
- printk(KERN_CRIT MODNAME "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT MODNAME
+ "Unexpected close, not stopping watchdog!\n");
wb_smsc_wdt_reset_timer();
}
/* reset expect flag */
expect_close = 0;
- /* scan to see whether or not we got the magic character */
+ /* 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))
/* ioctl => control interface */
-static int wb_smsc_wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long wb_smsc_wdt_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int new_timeout;
int __user *i;
} uarg;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
- WDIOF_SETTIMEOUT |
+ WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "SMsC 37B787 Watchdog"
uarg.i = (int __user *)arg;
switch (cmd) {
- default:
- return -ENOTTY;
-
- case WDIOC_GETSUPPORT:
- return copy_to_user(uarg.ident, &ident,
- sizeof(ident)) ? -EFAULT : 0;
-
- case WDIOC_GETSTATUS:
- return put_user(wb_smsc_wdt_status(), uarg.i);
-
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, uarg.i);
-
- case WDIOC_KEEPALIVE:
- wb_smsc_wdt_reset_timer();
- return 0;
-
- case WDIOC_SETTIMEOUT:
- if (get_user(new_timeout, uarg.i))
- return -EFAULT;
-
- // the API states this is given in secs
- if (unit == UNIT_MINUTE)
- new_timeout /= 60;
-
- if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
- return -EINVAL;
-
- timeout = new_timeout;
- wb_smsc_wdt_set_timeout(timeout);
-
- // fall through and return the new timeout...
-
- case WDIOC_GETTIMEOUT:
-
- new_timeout = timeout;
-
- if (unit == UNIT_MINUTE)
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(uarg.ident, &ident, sizeof(ident))
+ ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ return put_user(wb_smsc_wdt_status(), uarg.i);
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, uarg.i);
+ case WDIOC_KEEPALIVE:
+ wb_smsc_wdt_reset_timer();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_timeout, uarg.i))
+ return -EFAULT;
+ /* the API states this is given in secs */
+ if (unit == UNIT_MINUTE)
+ new_timeout /= 60;
+ if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
+ return -EINVAL;
+ timeout = new_timeout;
+ wb_smsc_wdt_set_timeout(timeout);
+ /* fall through and return the new timeout... */
+ case WDIOC_GETTIMEOUT:
+ new_timeout = timeout;
+ if (unit == UNIT_MINUTE)
new_timeout *= 60;
+ return put_user(new_timeout, uarg.i);
+ case WDIOC_SETOPTIONS:
+ {
+ int options, retval = -EINVAL;
- return put_user(new_timeout, uarg.i);
-
- case WDIOC_SETOPTIONS:
- {
- int options, retval = -EINVAL;
-
- if (get_user(options, uarg.i))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- wb_smsc_wdt_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- wb_smsc_wdt_enable();
- retval = 0;
- }
+ if (get_user(options, uarg.i))
+ return -EFAULT;
- return retval;
+ if (options & WDIOS_DISABLECARD) {
+ wb_smsc_wdt_disable();
+ retval = 0;
}
+ if (options & WDIOS_ENABLECARD) {
+ wb_smsc_wdt_enable();
+ retval = 0;
+ }
+ return retval;
+ }
+ default:
+ return -ENOTTY;
}
}
/* -- Notifier funtions -----------------------------------------*/
-static int wb_smsc_wdt_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int wb_smsc_wdt_notify_sys(struct notifier_block *this,
+ unsigned long code, void *unused)
{
- if (code == SYS_DOWN || code == SYS_HALT)
- {
- // set timeout to 0, to avoid possible race-condition
- timeout = 0;
+ if (code == SYS_DOWN || code == SYS_HALT) {
+ /* set timeout to 0, to avoid possible race-condition */
+ timeout = 0;
wb_smsc_wdt_disable();
}
return NOTIFY_DONE;
/* -- Module's structures ---------------------------------------*/
-static const struct file_operations wb_smsc_wdt_fops =
-{
- .owner = THIS_MODULE,
+static const struct file_operations wb_smsc_wdt_fops = {
+ .owner = THIS_MODULE,
.llseek = no_llseek,
.write = wb_smsc_wdt_write,
- .ioctl = wb_smsc_wdt_ioctl,
+ .unlocked_ioctl = wb_smsc_wdt_ioctl,
.open = wb_smsc_wdt_open,
.release = wb_smsc_wdt_release,
};
-static struct notifier_block wb_smsc_wdt_notifier =
-{
+static struct notifier_block wb_smsc_wdt_notifier = {
.notifier_call = wb_smsc_wdt_notify_sys,
};
-static struct miscdevice wb_smsc_wdt_miscdev =
-{
+static struct miscdevice wb_smsc_wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wb_smsc_wdt_fops,
{
int ret;
- printk("SMsC 37B787 watchdog component driver " VERSION " initialising...\n");
+ printk(KERN_INFO "SMsC 37B787 watchdog component driver "
+ VERSION " initialising...\n");
if (!request_region(IOPORT, IOPORT_SIZE, "SMsC 37B787 watchdog")) {
- printk(KERN_ERR MODNAME "Unable to register IO port %#x\n", IOPORT);
+ printk(KERN_ERR MODNAME "Unable to register IO port %#x\n",
+ IOPORT);
ret = -EBUSY;
goto out_pnp;
}
- // set new maximum, if it's too big
- if (timeout > MAX_TIMEOUT)
- timeout = MAX_TIMEOUT;
+ /* set new maximum, if it's too big */
+ if (timeout > MAX_TIMEOUT)
+ timeout = MAX_TIMEOUT;
- // init the watchdog timer
- wb_smsc_wdt_initialize();
+ /* init the watchdog timer */
+ wb_smsc_wdt_initialize();
ret = register_reboot_notifier(&wb_smsc_wdt_notifier);
if (ret) {
- printk(KERN_ERR MODNAME "Unable to register reboot notifier err = %d\n", ret);
+ printk(KERN_ERR MODNAME
+ "Unable to register reboot notifier err = %d\n", ret);
goto out_io;
}
ret = misc_register(&wb_smsc_wdt_miscdev);
if (ret) {
- printk(KERN_ERR MODNAME "Unable to register miscdev on minor %d\n", WATCHDOG_MINOR);
+ printk(KERN_ERR MODNAME
+ "Unable to register miscdev on minor %d\n",
+ WATCHDOG_MINOR);
goto out_rbt;
}
- // output info
- printk(KERN_INFO MODNAME "Timeout set to %d %s.\n", timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
- printk(KERN_INFO MODNAME "Watchdog initialized and sleeping (nowayout=%d)...\n", nowayout);
-
- // ret = 0
-
+ /* output info */
+ printk(KERN_INFO MODNAME "Timeout set to %d %s.\n",
+ timeout, (unit == UNIT_SECOND) ? "second(s)" : "minute(s)");
+ printk(KERN_INFO MODNAME
+ "Watchdog initialized and sleeping (nowayout=%d)...\n",
+ nowayout);
out_clean:
return ret;
static void __exit wb_smsc_wdt_exit(void)
{
/* Stop the timer before we leave */
- if (!nowayout)
- {
+ if (!nowayout) {
wb_smsc_wdt_shutdown();
printk(KERN_INFO MODNAME "Watchdog disabled.\n");
}
unregister_reboot_notifier(&wb_smsc_wdt_notifier);
release_region(IOPORT, IOPORT_SIZE);
- printk("SMsC 37B787 watchdog component driver removed.\n");
+ printk(KERN_INFO "SMsC 37B787 watchdog component driver removed.\n");
}
module_init(wb_smsc_wdt_init);
module_exit(wb_smsc_wdt_exit);
MODULE_AUTHOR("Sven Anders <anders@anduras.de>");
-MODULE_DESCRIPTION("Driver for SMsC 37B787 watchdog component (Version " VERSION ")");
+MODULE_DESCRIPTION("Driver for SMsC 37B787 watchdog component (Version "
+ VERSION ")");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
#ifdef SMSC_SUPPORT_MINUTES
module_param(unit, int, 0);
-MODULE_PARM_DESC(unit, "set unit to use, 0=seconds or 1=minutes, default is 0");
+MODULE_PARM_DESC(unit,
+ "set unit to use, 0=seconds or 1=minutes, default is 0");
#endif
module_param(timeout, int, 0);
MODULE_PARM_DESC(timeout, "range is 1-255 units, default is 60");
module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/jiffies.h>
-
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#define PFX "SoftDog: "
#define TIMER_MARGIN 60 /* Default is 60 seconds */
static int soft_margin = TIMER_MARGIN; /* in seconds */
module_param(soft_margin, int, 0);
-MODULE_PARM_DESC(soft_margin, "Watchdog soft_margin in seconds. (0<soft_margin<65536, default=" __MODULE_STRING(TIMER_MARGIN) ")");
+MODULE_PARM_DESC(soft_margin,
+ "Watchdog soft_margin in seconds. (0 < soft_margin < 65536, default="
+ __MODULE_STRING(TIMER_MARGIN) ")");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
#ifdef ONLY_TESTING
static int soft_noboot = 1;
if (soft_noboot)
printk(KERN_CRIT PFX "Triggered - Reboot ignored.\n");
- else
- {
+ else {
printk(KERN_CRIT PFX "Initiating system reboot.\n");
emergency_restart();
printk(KERN_CRIT PFX "Reboot didn't ?????\n");
softdog_stop();
module_put(THIS_MODULE);
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
set_bit(0, &orphan_timer);
softdog_keepalive();
}
return 0;
}
-static ssize_t softdog_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
+static ssize_t softdog_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
{
/*
* Refresh the timer.
*/
- if(len) {
+ if (len) {
if (!nowayout) {
size_t i;
return len;
}
-static int softdog_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long softdog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_margin;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
.identity = "Software Watchdog",
};
switch (cmd) {
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident,
- sizeof(ident)) ? -EFAULT : 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- softdog_keepalive();
- return 0;
- case WDIOC_SETTIMEOUT:
- if (get_user(new_margin, p))
- return -EFAULT;
- if (softdog_set_heartbeat(new_margin))
- return -EINVAL;
- softdog_keepalive();
- /* Fall */
- case WDIOC_GETTIMEOUT:
- return put_user(soft_margin, p);
+ default:
+ return -ENOTTY;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ softdog_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_margin, p))
+ return -EFAULT;
+ if (softdog_set_heartbeat(new_margin))
+ return -EINVAL;
+ softdog_keepalive();
+ /* Fall */
+ case WDIOC_GETTIMEOUT:
+ return put_user(soft_margin, p);
}
}
static int softdog_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT) {
+ if (code == SYS_DOWN || code == SYS_HALT)
/* Turn the WDT off */
softdog_stop();
- }
return NOTIFY_DONE;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = softdog_write,
- .ioctl = softdog_ioctl,
+ .unlocked_ioctl = softdog_ioctl,
.open = softdog_open,
.release = softdog_release,
};
{
int ret;
- /* Check that the soft_margin value is within it's range ; if not reset to the default */
+ /* Check that the soft_margin value is within it's range;
+ if not reset to the default */
if (softdog_set_heartbeat(soft_margin)) {
softdog_set_heartbeat(TIMER_MARGIN);
- printk(KERN_INFO PFX "soft_margin value must be 0<soft_margin<65536, using %d\n",
+ printk(KERN_INFO PFX
+ "soft_margin must be 0 < soft_margin < 65536, using %d\n",
TIMER_MARGIN);
}
ret = register_reboot_notifier(&softdog_notifier);
if (ret) {
- printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
return ret;
}
ret = misc_register(&softdog_miscdev);
if (ret) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
unregister_reboot_notifier(&softdog_notifier);
return ret;
}
static int expect_close;
static struct txx9_tmr_reg __iomem *txx9wdt_reg;
static struct clk *txx9_imclk;
+static DECLARE_LOCK(txx9_lock);
static void txx9wdt_ping(void)
{
+ spin_lock(&txx9_lock);
__raw_writel(TXx9_TMWTMR_TWIE | TXx9_TMWTMR_TWC, &txx9wdt_reg->wtmr);
+ spin_unlock(&txx9_lock);
}
static void txx9wdt_start(void)
{
+ spin_lock(&txx9_lock);
__raw_writel(WD_TIMER_CLK * timeout, &txx9wdt_reg->cpra);
__raw_writel(WD_TIMER_CCD, &txx9wdt_reg->ccdr);
__raw_writel(0, &txx9wdt_reg->tisr); /* clear pending interrupt */
__raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
&txx9wdt_reg->tcr);
__raw_writel(TXx9_TMWTMR_TWIE | TXx9_TMWTMR_TWC, &txx9wdt_reg->wtmr);
+ spin_unlock(&txx9_lock);
}
static void txx9wdt_stop(void)
{
+ spin_lock(&txx9_lock);
__raw_writel(TXx9_TMWTMR_WDIS, &txx9wdt_reg->wtmr);
__raw_writel(__raw_readl(&txx9wdt_reg->tcr) & ~TXx9_TMTCR_TCE,
&txx9wdt_reg->tcr);
+ spin_unlock(&txx9_lock);
}
static int txx9wdt_open(struct inode *inode, struct file *file)
return len;
}
-static int txx9wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long txx9wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_timeout;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT |
WDIOF_KEEPALIVEPING |
WDIOF_MAGICCLOSE,
}
static const struct file_operations txx9wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = txx9wdt_write,
- .ioctl = txx9wdt_ioctl,
- .open = txx9wdt_open,
- .release = txx9wdt_release,
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .write = txx9wdt_write,
+ .unlocked_ioctl = txx9wdt_ioctl,
+ .open = txx9wdt_open,
+ .release = txx9wdt_release,
};
static struct miscdevice txx9wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &txx9wdt_fops,
+ .minor = WATCHDOG_MINOR,
+ .name = "watchdog",
+ .fops = &txx9wdt_fops,
};
static struct notifier_block txx9wdt_notifier = {
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
#define WATCHDOG_NAME "w83627hf/thf/hg WDT"
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Kernel methods.
*/
#define WDT_EFER (wdt_io+0) /* Extended Function Enable Registers */
-#define WDT_EFIR (wdt_io+0) /* Extended Function Index Register (same as EFER) */
+#define WDT_EFIR (wdt_io+0) /* Extended Function Index Register
+ (same as EFER) */
#define WDT_EFDR (WDT_EFIR+1) /* Extended Function Data Register */
-static void
-w83627hf_select_wd_register(void)
+static void w83627hf_select_wd_register(void)
{
unsigned char c;
outb_p(0x87, WDT_EFER); /* Enter extended function mode */
outb_p(0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
}
-static void
-w83627hf_unselect_wd_register(void)
+static void w83627hf_unselect_wd_register(void)
{
outb_p(0xAA, WDT_EFER); /* Leave extended function mode */
}
/* tyan motherboards seem to set F5 to 0x4C ?
* So explicitly init to appropriate value. */
-static void
-w83627hf_init(void)
+
+static void w83627hf_init(void)
{
unsigned char t;
w83627hf_select_wd_register();
outb_p(0xF6, WDT_EFER); /* Select CRF6 */
- t=inb_p(WDT_EFDR); /* read CRF6 */
+ t = inb_p(WDT_EFDR); /* read CRF6 */
if (t != 0) {
- printk (KERN_INFO PFX "Watchdog already running. Resetting timeout to %d sec\n", timeout);
+ printk(KERN_INFO PFX
+ "Watchdog already running. Resetting timeout to %d sec\n",
+ timeout);
outb_p(timeout, WDT_EFDR); /* Write back to CRF6 */
}
outb_p(0xF5, WDT_EFER); /* Select CRF5 */
- t=inb_p(WDT_EFDR); /* read CRF5 */
- t&=~0x0C; /* set second mode & disable keyboard turning off watchdog */
+ t = inb_p(WDT_EFDR); /* read CRF5 */
+ t &= ~0x0C; /* set second mode & disable keyboard
+ turning off watchdog */
outb_p(t, WDT_EFDR); /* Write back to CRF5 */
outb_p(0xF7, WDT_EFER); /* Select CRF7 */
- t=inb_p(WDT_EFDR); /* read CRF7 */
- t&=~0xC0; /* disable keyboard & mouse turning off watchdog */
+ t = inb_p(WDT_EFDR); /* read CRF7 */
+ t &= ~0xC0; /* disable keyboard & mouse turning off
+ watchdog */
outb_p(t, WDT_EFDR); /* Write back to CRF7 */
w83627hf_unselect_wd_register();
}
-static void
-wdt_ctrl(int timeout)
+static void wdt_ctrl(int timeout)
{
spin_lock(&io_lock);
spin_unlock(&io_lock);
}
-static int
-wdt_ping(void)
+static int wdt_ping(void)
{
wdt_ctrl(timeout);
return 0;
}
-static int
-wdt_disable(void)
+static int wdt_disable(void)
{
wdt_ctrl(0);
return 0;
}
-static int
-wdt_set_heartbeat(int t)
+static int wdt_set_heartbeat(int t)
{
- if ((t < 1) || (t > 255))
+ if (t < 1 || t > 255)
return -EINVAL;
-
timeout = t;
return 0;
}
-static ssize_t
-wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t wdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
return count;
}
-static int
-wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_timeout;
static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83627HF WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof(ident)))
- return -EFAULT;
- break;
-
+ if (copy_to_user(argp, &ident, sizeof(ident)))
+ return -EFAULT;
+ break;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
-
+ return put_user(0, p);
case WDIOC_KEEPALIVE:
- wdt_ping();
- break;
-
+ wdt_ping();
+ break;
case WDIOC_SETTIMEOUT:
- if (get_user(new_timeout, p))
- return -EFAULT;
- if (wdt_set_heartbeat(new_timeout))
- return -EINVAL;
- wdt_ping();
- /* Fall */
-
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+ if (wdt_set_heartbeat(new_timeout))
+ return -EINVAL;
+ wdt_ping();
+ /* Fall */
case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
+ return put_user(timeout, p);
case WDIOC_SETOPTIONS:
{
- int options, retval = -EINVAL;
-
- if (get_user(options, p))
- return -EFAULT;
-
- if (options & WDIOS_DISABLECARD) {
- wdt_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- wdt_ping();
- retval = 0;
- }
+ int options, retval = -EINVAL;
- return retval;
+ if (get_user(options, p))
+ return -EFAULT;
+ if (options & WDIOS_DISABLECARD) {
+ wdt_disable();
+ retval = 0;
+ }
+ if (options & WDIOS_ENABLECARD) {
+ wdt_ping();
+ retval = 0;
+ }
+ return retval;
}
-
default:
- return -ENOTTY;
+ return -ENOTTY;
}
return 0;
}
-static int
-wdt_open(struct inode *inode, struct file *file)
+static int wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
return nonseekable_open(inode, file);
}
-static int
-wdt_close(struct inode *inode, struct file *file)
+static int wdt_close(struct inode *inode, struct file *file)
{
- if (expect_close == 42) {
+ if (expect_close == 42)
wdt_disable();
- } else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
wdt_ping();
}
expect_close = 0;
* Notifier for system down
*/
-static int
-wdt_notify_sys(struct notifier_block *this, unsigned long code,
+static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,
- .ioctl = wdt_ioctl,
+ .unlocked_ioctl = wdt_ioctl,
.open = wdt_open,
.release = wdt_close,
};
.notifier_call = wdt_notify_sys,
};
-static int __init
-wdt_init(void)
+static int __init wdt_init(void)
{
int ret;
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
- printk (KERN_INFO PFX "timeout value must be 1<=timeout<=255, using %d\n",
- WATCHDOG_TIMEOUT);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= timeout <= 255, using %d\n",
+ WATCHDOG_TIMEOUT);
}
if (!request_region(wdt_io, 1, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
+ printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_io);
ret = -EIO;
goto out;
ret = register_reboot_notifier(&wdt_notifier);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
goto unreg_regions;
}
ret = misc_register(&wdt_miscdev);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
- printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
- timeout, nowayout);
+ printk(KERN_INFO PFX
+ "initialized. timeout=%d sec (nowayout=%d)\n",
+ timeout, nowayout);
out:
return ret;
goto out;
}
-static void __exit
-wdt_exit(void)
+static void __exit wdt_exit(void)
{
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
- release_region(wdt_io,1);
+ release_region(wdt_io, 1);
}
module_init(wdt_init);
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
#include <asm/system.h>
#define WATCHDOG_NAME "w83697hf/hg WDT"
/* You must set this - there is no sane way to probe for this board. */
static int wdt_io = 0x2e;
module_param(wdt_io, int, 0);
-MODULE_PARM_DESC(wdt_io, "w83697hf/hg WDT io port (default 0x2e, 0 = autodetect)");
+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) ")");
+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) ")");
+MODULE_PARM_DESC(early_disable,
+ "Watchdog gets disabled at boot time (default="
+ __MODULE_STRING(WATCHDOG_EARLY_DISABLE) ")");
/*
* Kernel methods.
*/
-#define W83697HF_EFER (wdt_io+0) /* Extended Function Enable Register */
-#define W83697HF_EFIR (wdt_io+0) /* Extended Function Index Register (same as EFER) */
-#define W83697HF_EFDR (wdt_io+1) /* Extended Function Data Register */
+#define W83697HF_EFER (wdt_io + 0) /* Extended Function Enable Register */
+#define W83697HF_EFIR (wdt_io + 0) /* Extended Function Index Register
+ (same as EFER) */
+#define W83697HF_EFDR (wdt_io + 1) /* Extended Function Data Register */
-static inline void
-w83697hf_unlock(void)
+static inline void w83697hf_unlock(void)
{
outb_p(0x87, W83697HF_EFER); /* Enter extended function mode */
outb_p(0x87, W83697HF_EFER); /* Again according to manual */
}
-static inline void
-w83697hf_lock(void)
+static inline void w83697hf_lock(void)
{
outb_p(0xAA, W83697HF_EFER); /* Leave extended function mode */
}
* w83697hf_write_timeout() must be called with the device unlocked.
*/
-static unsigned char
-w83697hf_get_reg(unsigned char reg)
+static unsigned char w83697hf_get_reg(unsigned char reg)
{
outb_p(reg, W83697HF_EFIR);
return inb_p(W83697HF_EFDR);
}
-static void
-w83697hf_set_reg(unsigned char reg, unsigned char data)
+static void w83697hf_set_reg(unsigned char reg, unsigned char data)
{
outb_p(reg, W83697HF_EFIR);
outb_p(data, W83697HF_EFDR);
}
-static void
-w83697hf_write_timeout(int timeout)
+static void w83697hf_write_timeout(int timeout)
{
- w83697hf_set_reg(0xF4, timeout); /* Write Timeout counter to CRF4 */
+ /* Write Timeout counter to CRF4 */
+ w83697hf_set_reg(0xF4, timeout);
}
-static void
-w83697hf_select_wdt(void)
+static void w83697hf_select_wdt(void)
{
w83697hf_unlock();
w83697hf_set_reg(0x07, 0x08); /* Switch to logic device 8 (GPIO2) */
}
-static inline void
-w83697hf_deselect_wdt(void)
+static inline void w83697hf_deselect_wdt(void)
{
w83697hf_lock();
}
-static void
-w83697hf_init(void)
+static void w83697hf_init(void)
{
unsigned char bbuf;
bbuf = w83697hf_get_reg(0x29);
bbuf &= ~0x60;
bbuf |= 0x20;
- w83697hf_set_reg(0x29, bbuf); /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
+
+ /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
+ w83697hf_set_reg(0x29, bbuf);
bbuf = w83697hf_get_reg(0xF3);
bbuf &= ~0x04;
w83697hf_deselect_wdt();
}
-static void
-wdt_ping(void)
+static void wdt_ping(void)
{
spin_lock(&io_lock);
w83697hf_select_wdt();
spin_unlock(&io_lock);
}
-static void
-wdt_enable(void)
+static void wdt_enable(void)
{
spin_lock(&io_lock);
w83697hf_select_wdt();
spin_unlock(&io_lock);
}
-static void
-wdt_disable(void)
+static void wdt_disable(void)
{
spin_lock(&io_lock);
w83697hf_select_wdt();
spin_unlock(&io_lock);
}
-static unsigned char
-wdt_running(void)
+static unsigned char wdt_running(void)
{
unsigned char t;
return t;
}
-static int
-wdt_set_heartbeat(int t)
+static int wdt_set_heartbeat(int t)
{
- if ((t < 1) || (t > 255))
+ if (t < 1 || t > 255)
return -EINVAL;
timeout = t;
return 0;
}
-static ssize_t
-wdt_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t wdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
if (count) {
if (!nowayout) {
return count;
}
-static int
-wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
int new_timeout;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static const struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83697HF WDT",
};
return 0;
}
-static int
-wdt_open(struct inode *inode, struct file *file)
+static int wdt_open(struct inode *inode, struct file *file)
{
if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
return nonseekable_open(inode, file);
}
-static int
-wdt_close(struct inode *inode, struct file *file)
+static int wdt_close(struct inode *inode, struct file *file)
{
- if (expect_close == 42) {
+ if (expect_close == 42)
wdt_disable();
- } else {
- printk (KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
wdt_ping();
}
expect_close = 0;
* Notifier for system down
*/
-static int
-wdt_notify_sys(struct notifier_block *this, unsigned long code,
+static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT) {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,
- .ioctl = wdt_ioctl,
+ .unlocked_ioctl = wdt_ioctl,
.open = wdt_open,
.release = wdt_close,
};
.notifier_call = wdt_notify_sys,
};
-static int
-w83697hf_check_wdt(void)
+static int w83697hf_check_wdt(void)
{
if (!request_region(wdt_io, 2, WATCHDOG_NAME)) {
- printk (KERN_ERR PFX "I/O address 0x%x already in use\n", wdt_io);
+ printk(KERN_ERR PFX
+ "I/O address 0x%x already in use\n", wdt_io);
return -EIO;
}
- printk (KERN_DEBUG PFX "Looking for watchdog at address 0x%x\n", wdt_io);
+ printk(KERN_DEBUG PFX
+ "Looking for watchdog at address 0x%x\n", wdt_io);
w83697hf_unlock();
if (w83697hf_get_reg(0x20) == 0x60) {
- printk (KERN_INFO PFX "watchdog found at address 0x%x\n", wdt_io);
+ printk(KERN_INFO PFX
+ "watchdog found at address 0x%x\n", wdt_io);
w83697hf_lock();
return 0;
}
- w83697hf_lock(); /* Reprotect in case it was a compatible device */
+ /* Reprotect in case it was a compatible device */
+ w83697hf_lock();
- printk (KERN_INFO PFX "watchdog not found at address 0x%x\n", wdt_io);
+ printk(KERN_INFO PFX "watchdog not found at address 0x%x\n", wdt_io);
release_region(wdt_io, 2);
return -EIO;
}
static int w83697hf_ioports[] = { 0x2e, 0x4e, 0x00 };
-static int __init
-wdt_init(void)
+static int __init wdt_init(void)
{
int ret, i, found = 0;
- printk (KERN_INFO PFX "WDT driver for W83697HF/HG initializing\n");
+ printk(KERN_INFO PFX "WDT driver for W83697HF/HG initializing\n");
if (wdt_io == 0) {
/* we will autodetect the W83697HF/HG watchdog */
}
if (!found) {
- printk (KERN_ERR PFX "No W83697HF/HG could be found\n");
+ printk(KERN_ERR PFX "No W83697HF/HG could be found\n");
ret = -EIO;
goto out;
}
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);
- printk (KERN_INFO PFX "timeout value must be 1<=timeout<=255, using %d\n",
- WATCHDOG_TIMEOUT);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= timeout <= 255, using %d\n",
+ WATCHDOG_TIMEOUT);
}
ret = register_reboot_notifier(&wdt_notifier);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
goto unreg_regions;
}
ret = misc_register(&wdt_miscdev);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto unreg_reboot;
}
- printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
+ printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
out:
goto out;
}
-static void __exit
-wdt_exit(void)
+static void __exit wdt_exit(void)
{
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
* Added KERN_* tags to printks
* add CONFIG_WATCHDOG_NOWAYOUT support
* fix possible wdt_is_open race
- * changed watchdog_info to correctly reflect what the driver offers
- * added WDIOC_GETSTATUS, WDIOC_GETBOOTSTATUS, WDIOC_SETTIMEOUT,
+ * changed watchdog_info to correctly reflect what
+ * the driver offers
+ * added WDIOC_GETSTATUS, WDIOC_GETBOOTSTATUS,
+ * WDIOC_SETTIMEOUT,
* WDIOC_GETTIMEOUT, and WDIOC_SETOPTIONS ioctls
* 09/8 - 2003 [wim@iguana.be] cleanup of trailing spaces
* added extra printk's for startup problems
* use module_param
- * made timeout (the emulated heartbeat) a module_param
+ * made timeout (the emulated heartbeat) a
+ * module_param
* made the keepalive ping an internal subroutine
*
* This WDT driver is different from most other Linux WDT
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/init.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#include <asm/system.h>
#define OUR_NAME "w83877f_wdt"
*/
#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
-static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+static int timeout = WATCHDOG_TIMEOUT;
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. (1<=timeout<=3600, 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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void wdt_timer_ping(unsigned long);
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
/* If we got a heartbeat pulse within the WDT_US_INTERVAL
* we agree to ping the WDT
*/
- if(time_before(jiffies, next_heartbeat))
- {
+ if (time_before(jiffies, next_heartbeat)) {
/* Ping the WDT */
spin_lock(&wdt_spinlock);
spin_unlock(&wdt_spinlock);
- } else {
- printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
- }
+ } else
+ printk(KERN_WARNING PFX
+ "Heartbeat lost! Will not ping the watchdog\n");
}
/*
* /dev/watchdog handling
*/
-static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count)
- {
- if (!nowayout)
- {
+ if (count) {
+ if (!nowayout) {
size_t ofs;
- /* note: just in case someone wrote the magic character
- * five months ago... */
+ /* note: just in case someone wrote the magic
+ character five months ago... */
wdt_expect_close = 0;
- /* scan to see whether or not we got the magic character */
- for(ofs = 0; ofs != count; ofs++)
- {
+ /* scan to see whether or not we got the
+ magic character */
+ for (ofs = 0; ofs != count; ofs++) {
char c;
if (get_user(c, buf + ofs))
return -EFAULT;
return count;
}
-static int fop_open(struct inode * inode, struct file * file)
+static int fop_open(struct inode *inode, struct file *file)
{
/* Just in case we're already talking to someone... */
- if(test_and_set_bit(0, &wdt_is_open))
+ if (test_and_set_bit(0, &wdt_is_open))
return -EBUSY;
/* Good, fire up the show */
return nonseekable_open(inode, file);
}
-static int fop_close(struct inode * inode, struct file * file)
+static int fop_close(struct inode *inode, struct file *file)
{
- if(wdt_expect_close == 42)
+ if (wdt_expect_close == 42)
wdt_turnoff();
else {
del_timer(&timer);
- printk(KERN_CRIT PFX "device file closed unexpectedly. Will not stop the WDT!\n");
+ printk(KERN_CRIT PFX
+ "device file closed unexpectedly. Will not stop the WDT!\n");
}
clear_bit(0, &wdt_is_open);
wdt_expect_close = 0;
return 0;
}
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident=
- {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static const struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+ | WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "W83877F",
};
- switch(cmd)
+ switch (cmd) {
+ default:
+ return -ENOTTY;
+ case WDIOC_GETSUPPORT:
+ return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+ case WDIOC_GETSTATUS:
+ case WDIOC_GETBOOTSTATUS:
+ return put_user(0, p);
+ case WDIOC_KEEPALIVE:
+ wdt_keepalive();
+ return 0;
+ case WDIOC_SETOPTIONS:
{
- default:
- return -ENOTTY;
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- wdt_keepalive();
- return 0;
- case WDIOC_SETOPTIONS:
- {
- int new_options, retval = -EINVAL;
-
- if(get_user(new_options, p))
- return -EFAULT;
-
- if(new_options & WDIOS_DISABLECARD) {
- wdt_turnoff();
- retval = 0;
- }
+ int new_options, retval = -EINVAL;
- if(new_options & WDIOS_ENABLECARD) {
- wdt_startup();
- retval = 0;
- }
+ if (get_user(new_options, p))
+ return -EFAULT;
- return retval;
+ if (new_options & WDIOS_DISABLECARD) {
+ wdt_turnoff();
+ retval = 0;
}
- case WDIOC_SETTIMEOUT:
- {
- int new_timeout;
- if(get_user(new_timeout, p))
- return -EFAULT;
+ if (new_options & WDIOS_ENABLECARD) {
+ wdt_startup();
+ retval = 0;
+ }
- if(new_timeout < 1 || new_timeout > 3600) /* arbitrary upper limit */
- return -EINVAL;
+ return retval;
+ }
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
- timeout = new_timeout;
- wdt_keepalive();
- /* Fall through */
- }
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
+ if (get_user(new_timeout, p))
+ return -EFAULT;
+
+ /* arbitrary upper limit */
+ if (new_timeout < 1 || new_timeout > 3600)
+ return -EINVAL;
+
+ timeout = new_timeout;
+ wdt_keepalive();
+ /* Fall through */
+ }
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
}
}
.write = fop_write,
.open = fop_open,
.release = fop_close,
- .ioctl = fop_ioctl,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt_turnoff();
return NOTIFY_DONE;
}
* turn the timebomb registers off.
*/
-static struct notifier_block wdt_notifier=
-{
+static struct notifier_block wdt_notifier = {
.notifier_call = wdt_notify_sys,
};
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
- release_region(WDT_PING,1);
- release_region(ENABLE_W83877F_PORT,2);
+ release_region(WDT_PING, 1);
+ release_region(ENABLE_W83877F_PORT, 2);
}
static int __init w83877f_wdt_init(void)
{
int rc = -EBUSY;
- if(timeout < 1 || timeout > 3600) /* arbitrary upper limit */
- {
+ if (timeout < 1 || timeout > 3600) { /* arbitrary upper limit */
timeout = WATCHDOG_TIMEOUT;
- printk(KERN_INFO PFX "timeout value must be 1<=x<=3600, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= x <= 3600, using %d\n",
+ timeout);
}
- if (!request_region(ENABLE_W83877F_PORT, 2, "W83877F WDT"))
- {
+ if (!request_region(ENABLE_W83877F_PORT, 2, "W83877F WDT")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
ENABLE_W83877F_PORT);
rc = -EIO;
goto err_out;
}
- if (!request_region(WDT_PING, 1, "W8387FF WDT"))
- {
+ if (!request_region(WDT_PING, 1, "W8387FF WDT")) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
WDT_PING);
rc = -EIO;
}
rc = register_reboot_notifier(&wdt_notifier);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region2;
}
rc = misc_register(&wdt_miscdev);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- wdt_miscdev.minor, rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ wdt_miscdev.minor, rc);
goto err_out_reboot;
}
- printk(KERN_INFO PFX "WDT driver for W83877F initialised. timeout=%d sec (nowayout=%d)\n",
+ printk(KERN_INFO PFX
+ "WDT driver for W83877F initialised. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return 0;
err_out_reboot:
unregister_reboot_notifier(&wdt_notifier);
err_out_region2:
- release_region(WDT_PING,1);
+ release_region(WDT_PING, 1);
err_out_region1:
- release_region(ENABLE_W83877F_PORT,2);
+ release_region(ENABLE_W83877F_PORT, 2);
err_out:
return rc;
}
#include <linux/watchdog.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <asm/system.h>
-#include <asm/uaccess.h>
#define WATCHDOG_VERSION "1.00"
#define WATCHDOG_NAME "W83977F WDT"
static DEFINE_SPINLOCK(spinlock);
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout,"Watchdog timeout in seconds (15..7635), default=" __MODULE_STRING(DEFAULT_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds (15..7635), default="
+ __MODULE_STRING(DEFAULT_TIMEOUT) ")");
module_param(testmode, int, 0);
-MODULE_PARM_DESC(testmode,"Watchdog testmode (1 = no reboot), default=0");
+MODULE_PARM_DESC(testmode, "Watchdog testmode (1 = no reboot), default=0");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Start the watchdog
spin_lock_irqsave(&spinlock, flags);
/* Unlock the SuperIO chip */
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
/*
* Select device Aux2 (device=8) to set watchdog regs F2, F3 and F4.
* F3 is set to enable watchdog LED blink at timeout.
* F4 is used to just clear the TIMEOUT'ed state (bit 0).
*/
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
- outb_p(0xF2,IO_INDEX_PORT);
- outb_p(timeoutW,IO_DATA_PORT);
- outb_p(0xF3,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
- outb_p(0xF4,IO_INDEX_PORT);
- outb_p(0x00,IO_DATA_PORT);
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
+ outb_p(0xF2, IO_INDEX_PORT);
+ outb_p(timeoutW, IO_DATA_PORT);
+ outb_p(0xF3, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
+ outb_p(0xF4, IO_INDEX_PORT);
+ outb_p(0x00, IO_DATA_PORT);
/* Set device Aux2 active */
- outb_p(0x30,IO_INDEX_PORT);
- outb_p(0x01,IO_DATA_PORT);
+ outb_p(0x30, IO_INDEX_PORT);
+ outb_p(0x01, IO_DATA_PORT);
- /*
+ /*
* Select device Aux1 (dev=7) to set GP16 as the watchdog output
* (in reg E6) and GP13 as the watchdog LED output (in reg E3).
* Map GP16 at pin 119.
* In test mode watch the bit 0 on F4 to indicate "triggered" or
* check watchdog LED on SBC.
*/
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x07,IO_DATA_PORT);
- if (!testmode)
- {
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x07, IO_DATA_PORT);
+ if (!testmode) {
unsigned pin_map;
- outb_p(0xE6,IO_INDEX_PORT);
- outb_p(0x0A,IO_DATA_PORT);
- outb_p(0x2C,IO_INDEX_PORT);
+ outb_p(0xE6, IO_INDEX_PORT);
+ outb_p(0x0A, IO_DATA_PORT);
+ outb_p(0x2C, IO_INDEX_PORT);
pin_map = inb_p(IO_DATA_PORT);
pin_map |= 0x10;
pin_map &= ~(0x20);
- outb_p(0x2C,IO_INDEX_PORT);
- outb_p(pin_map,IO_DATA_PORT);
+ outb_p(0x2C, IO_INDEX_PORT);
+ outb_p(pin_map, IO_DATA_PORT);
}
- outb_p(0xE3,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
+ outb_p(0xE3, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
/* Set device Aux1 active */
- outb_p(0x30,IO_INDEX_PORT);
- outb_p(0x01,IO_DATA_PORT);
+ outb_p(0x30, IO_INDEX_PORT);
+ outb_p(0x01, IO_DATA_PORT);
/* Lock the SuperIO chip */
- outb_p(LOCK_DATA,IO_INDEX_PORT);
+ outb_p(LOCK_DATA, IO_INDEX_PORT);
spin_unlock_irqrestore(&spinlock, flags);
spin_lock_irqsave(&spinlock, flags);
/* Unlock the SuperIO chip */
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
- /*
+ /*
* Select device Aux2 (device=8) to set watchdog regs F2, F3 and F4.
* F2 is reset to its default value (watchdog timer disabled).
* F3 is reset to its default state.
* F4 clears the TIMEOUT'ed state (bit 0) - back to default.
*/
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
- outb_p(0xF2,IO_INDEX_PORT);
- outb_p(0xFF,IO_DATA_PORT);
- outb_p(0xF3,IO_INDEX_PORT);
- outb_p(0x00,IO_DATA_PORT);
- outb_p(0xF4,IO_INDEX_PORT);
- outb_p(0x00,IO_DATA_PORT);
- outb_p(0xF2,IO_INDEX_PORT);
- outb_p(0x00,IO_DATA_PORT);
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
+ outb_p(0xF2, IO_INDEX_PORT);
+ outb_p(0xFF, IO_DATA_PORT);
+ outb_p(0xF3, IO_INDEX_PORT);
+ outb_p(0x00, IO_DATA_PORT);
+ outb_p(0xF4, IO_INDEX_PORT);
+ outb_p(0x00, IO_DATA_PORT);
+ outb_p(0xF2, IO_INDEX_PORT);
+ outb_p(0x00, IO_DATA_PORT);
/*
- * Select device Aux1 (dev=7) to set GP16 (in reg E6) and
+ * Select device Aux1 (dev=7) to set GP16 (in reg E6) and
* Gp13 (in reg E3) as inputs.
*/
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x07,IO_DATA_PORT);
- if (!testmode)
- {
- outb_p(0xE6,IO_INDEX_PORT);
- outb_p(0x01,IO_DATA_PORT);
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x07, IO_DATA_PORT);
+ if (!testmode) {
+ outb_p(0xE6, IO_INDEX_PORT);
+ outb_p(0x01, IO_DATA_PORT);
}
- outb_p(0xE3,IO_INDEX_PORT);
- outb_p(0x01,IO_DATA_PORT);
+ outb_p(0xE3, IO_INDEX_PORT);
+ outb_p(0x01, IO_DATA_PORT);
/* Lock the SuperIO chip */
- outb_p(LOCK_DATA,IO_INDEX_PORT);
+ outb_p(LOCK_DATA, IO_INDEX_PORT);
spin_unlock_irqrestore(&spinlock, flags);
spin_lock_irqsave(&spinlock, flags);
/* Unlock the SuperIO chip */
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
/* Select device Aux2 (device=8) to kick watchdog reg F2 */
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
- outb_p(0xF2,IO_INDEX_PORT);
- outb_p(timeoutW,IO_DATA_PORT);
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
+ outb_p(0xF2, IO_INDEX_PORT);
+ outb_p(timeoutW, IO_DATA_PORT);
/* Lock the SuperIO chip */
- outb_p(LOCK_DATA,IO_INDEX_PORT);
+ outb_p(LOCK_DATA, IO_INDEX_PORT);
spin_unlock_irqrestore(&spinlock, flags);
/*
* Convert seconds to watchdog counter time units, rounding up.
- * On PCM-5335 watchdog units are 30 seconds/step with 15 sec startup
+ * On PCM-5335 watchdog units are 30 seconds/step with 15 sec startup
* value. This information is supplied in the PCM-5335 manual and was
* checked by me on a real board. This is a bit strange because W83977f
* datasheet says counter unit is in minutes!
return -EINVAL;
/*
- * timeout is the timeout in seconds,
+ * timeout is the timeout in seconds,
* timeoutW is the timeout in watchdog counter units.
*/
timeoutW = tmrval;
spin_lock_irqsave(&spinlock, flags);
/* Unlock the SuperIO chip */
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
- outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+ outb_p(UNLOCK_DATA, IO_INDEX_PORT);
/* Select device Aux2 (device=8) to read watchdog reg F4 */
- outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
- outb_p(0x08,IO_DATA_PORT);
- outb_p(0xF4,IO_INDEX_PORT);
+ outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+ outb_p(0x08, IO_DATA_PORT);
+ outb_p(0xF4, IO_INDEX_PORT);
new_status = inb_p(IO_DATA_PORT);
/* Lock the SuperIO chip */
- outb_p(LOCK_DATA,IO_INDEX_PORT);
+ outb_p(LOCK_DATA, IO_INDEX_PORT);
spin_unlock_irqrestore(&spinlock, flags);
static int wdt_open(struct inode *inode, struct file *file)
{
/* If the watchdog is alive we don't need to start it again */
- if( test_and_set_bit(0, &timer_alive) )
+ if (test_and_set_bit(0, &timer_alive))
return -EBUSY;
if (nowayout)
* Shut off the timer.
* Lock it in if it's a module and we set nowayout
*/
- if (expect_close == 42)
- {
+ if (expect_close == 42) {
wdt_stop();
clear_bit(0, &timer_alive);
} else {
wdt_keepalive();
- printk(KERN_CRIT PFX "unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "unexpected close, not stopping watchdog!\n");
}
expect_close = 0;
return 0;
size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
- if(count)
- {
- if (!nowayout)
- {
+ if (count) {
+ if (!nowayout) {
size_t ofs;
- /* note: just in case someone wrote the magic character long ago */
+ /* note: just in case someone wrote the
+ magic character long ago */
expect_close = 0;
- /* scan to see whether or not we got the magic character */
- for(ofs = 0; ofs != count; ofs++)
- {
+ /* scan to see whether or not we got the
+ magic character */
+ for (ofs = 0; ofs != count; ofs++) {
char c;
if (get_user(c, buf + ofs))
return -EFAULT;
- if (c == 'V') {
+ if (c == 'V')
expect_close = 42;
- }
}
}
.identity = WATCHDOG_NAME,
};
-static int wdt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int status;
int new_options, retval = -EINVAL;
uarg.i = (int __user *)arg;
- switch(cmd)
- {
+ switch (cmd) {
default:
return -ENOTTY;
case WDIOC_GETSUPPORT:
- return copy_to_user(uarg.ident, &ident, sizeof(ident)) ? -EFAULT : 0;
+ return copy_to_user(uarg.ident, &ident,
+ sizeof(ident)) ? -EFAULT : 0;
case WDIOC_GETSTATUS:
wdt_get_status(&status);
return 0;
case WDIOC_SETOPTIONS:
- if (get_user (new_options, uarg.i))
+ if (get_user(new_options, uarg.i))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if (code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt_stop();
return NOTIFY_DONE;
}
-static const struct file_operations wdt_fops=
-{
+static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,
- .ioctl = wdt_ioctl,
+ .unlocked_ioctl = wdt_ioctl,
.open = wdt_open,
.release = wdt_release,
};
-static struct miscdevice wdt_miscdev=
-{
+static struct miscdevice wdt_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt_fops,
{
int rc;
- printk(KERN_INFO PFX DRIVER_VERSION);
+ printk(KERN_INFO PFX DRIVER_VERSION);
/*
- * Check that the timeout value is within it's range ;
+ * Check that the timeout value is within it's range;
* if not reset to the default
*/
if (wdt_set_timeout(timeout)) {
wdt_set_timeout(DEFAULT_TIMEOUT);
- printk(KERN_INFO PFX "timeout value must be 15<=timeout<=7635, using %d\n",
- DEFAULT_TIMEOUT);
+ printk(KERN_INFO PFX
+ "timeout value must be 15 <= timeout <= 7635, using %d\n",
+ DEFAULT_TIMEOUT);
}
- if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME))
- {
+ if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME)) {
printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
IO_INDEX_PORT);
rc = -EIO;
}
rc = register_reboot_notifier(&wdt_notifier);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region;
}
rc = misc_register(&wdt_miscdev);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- wdt_miscdev.minor, rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ wdt_miscdev.minor, rc);
goto err_out_reboot;
}
- printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
- timeout, nowayout, testmode);
+ printk(KERN_INFO PFX
+ "initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
+ timeout, nowayout, testmode);
return 0;
err_out_reboot:
unregister_reboot_notifier(&wdt_notifier);
err_out_region:
- release_region(IO_INDEX_PORT,2);
+ release_region(IO_INDEX_PORT, 2);
err_out:
return rc;
}
wdt_stop();
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
- release_region(IO_INDEX_PORT,2);
+ release_region(IO_INDEX_PORT, 2);
}
module_init(w83977f_wdt_init);
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/spinlock.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
#define WATCHDOG_NAME "Wafer 5823 WDT"
#define PFX WATCHDOG_NAME ": "
static int timeout = WD_TIMO; /* in seconds */
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=255, default=" __MODULE_STRING(WD_TIMO) ".");
+MODULE_PARM_DESC(timeout,
+ "Watchdog timeout in seconds. 1 <= timeout <= 255, default="
+ __MODULE_STRING(WD_TIMO) ".");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void wafwdt_ping(void)
{
inb_p(wdt_stop);
}
-static ssize_t wafwdt_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos)
+static ssize_t wafwdt_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
if (count) {
/* In case it was set long ago */
expect_close = 0;
- /* scan to see whether or not we got the magic character */
+ /* scan to see whether or not we got the magic
+ character */
for (i = 0; i != count; i++) {
char c;
if (get_user(c, buf + i))
expect_close = 42;
}
}
- /* Well, anyhow someone wrote to us, we should return that favour */
+ /* Well, anyhow someone wrote to us, we should
+ return that favour */
wafwdt_ping();
}
return count;
}
-static int wafwdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long wafwdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int new_timeout;
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident = {
- .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ static const struct watchdog_info ident = {
+ .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE,
.firmware_version = 1,
.identity = "Wafer 5823 WDT",
};
switch (cmd) {
case WDIOC_GETSUPPORT:
- if (copy_to_user(argp, &ident, sizeof (ident)))
+ if (copy_to_user(argp, &ident, sizeof(ident)))
return -EFAULT;
break;
static int
wafwdt_close(struct inode *inode, struct file *file)
{
- if (expect_close == 42) {
+ if (expect_close == 42)
wafwdt_stop();
- } else {
- printk(KERN_CRIT PFX "WDT device closed unexpectedly. WDT will not stop!\n");
+ else {
+ printk(KERN_CRIT PFX
+ "WDT device closed unexpectedly. WDT will not stop!\n");
wafwdt_ping();
}
clear_bit(0, &wafwdt_is_open);
* Notifier for system down
*/
-static int wafwdt_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int wafwdt_notify_sys(struct notifier_block *this, unsigned long code,
+ void *unused)
{
- if (code == SYS_DOWN || code == SYS_HALT) {
- /* Turn the WDT off */
+ if (code == SYS_DOWN || code == SYS_HALT)
wafwdt_stop();
- }
return NOTIFY_DONE;
}
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wafwdt_write,
- .ioctl = wafwdt_ioctl,
+ .unlocked_ioctl = wafwdt_ioctl,
.open = wafwdt_open,
.release = wafwdt_close,
};
{
int ret;
- printk(KERN_INFO "WDT driver for Wafer 5823 single board computer initialising.\n");
+ printk(KERN_INFO
+ "WDT driver for Wafer 5823 single board computer initialising.\n");
if (timeout < 1 || timeout > 255) {
timeout = WD_TIMO;
- printk (KERN_INFO PFX "timeout value must be 1<=x<=255, using %d\n",
- timeout);
+ printk(KERN_INFO PFX
+ "timeout value must be 1 <= x <= 255, using %d\n",
+ timeout);
}
if (wdt_stop != wdt_start) {
- if(!request_region(wdt_stop, 1, "Wafer 5823 WDT")) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
- wdt_stop);
+ if (!request_region(wdt_stop, 1, "Wafer 5823 WDT")) {
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n",
+ wdt_stop);
ret = -EIO;
goto error;
}
}
- if(!request_region(wdt_start, 1, "Wafer 5823 WDT")) {
- printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
+ if (!request_region(wdt_start, 1, "Wafer 5823 WDT")) {
+ printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
wdt_start);
ret = -EIO;
goto error2;
ret = register_reboot_notifier(&wafwdt_notifier);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- ret);
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", ret);
goto error3;
}
ret = misc_register(&wafwdt_miscdev);
if (ret != 0) {
- printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, ret);
goto error4;
}
- printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
+ printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
timeout, nowayout);
return ret;
{
misc_deregister(&wafwdt_miscdev);
unregister_reboot_notifier(&wafwdt_notifier);
- if(wdt_stop != wdt_start)
+ if (wdt_stop != wdt_start)
release_region(wdt_stop, 1);
release_region(wdt_start, 1);
}
#include <linux/reboot.h>
#include <linux/types.h>
#include <linux/watchdog.h>
+#include <linux/uaccess.h>
#include <asm/rtas.h>
-#include <asm/uaccess.h>
#define WDRTAS_MAGIC_CHAR 42
#define WDRTAS_SUPPORTED_MASK (WDIOF_SETTIMEOUT | \
#endif
static atomic_t wdrtas_miscdev_open = ATOMIC_INIT(0);
-static char wdrtas_expect_close = 0;
+static char wdrtas_expect_close;
static int wdrtas_interval;
* RTAS function set-indicator (surveillance). The unit of interval is
* seconds.
*/
-static int
-wdrtas_set_interval(int interval)
+
+static int wdrtas_set_interval(int interval)
{
long result;
static int print_msg = 10;
result = rtas_call(wdrtas_token_set_indicator, 3, 1, NULL,
WDRTAS_SURVEILLANCE_IND, 0, interval);
- if ( (result < 0) && (print_msg) ) {
+ if (result < 0 && print_msg) {
printk(KERN_ERR "wdrtas: setting the watchdog to %i "
"timeout failed: %li\n", interval, result);
print_msg--;
* as reported by the RTAS function ibm,get-system-parameter. The unit
* of the return value is seconds.
*/
-static int
-wdrtas_get_interval(int fallback_value)
+static int wdrtas_get_interval(int fallback_value)
{
long result;
char value[4];
result = rtas_call(wdrtas_token_get_sp, 3, 1, NULL,
WDRTAS_SP_SPI, (void *)__pa(&value), 4);
- if ( (value[0] != 0) || (value[1] != 2) || (value[3] != 0) ||
- (result < 0) ) {
+ if (value[0] != 0 || value[1] != 2 || value[3] != 0 || result < 0) {
printk(KERN_WARNING "wdrtas: could not get sp_spi watchdog "
"timeout (%li). Continuing\n", result);
return fallback_value;
* wdrtas_timer_start starts the watchdog by calling the RTAS function
* set-interval (surveillance)
*/
-static void
-wdrtas_timer_start(void)
+static void wdrtas_timer_start(void)
{
wdrtas_set_interval(wdrtas_interval);
}
* wdrtas_timer_stop stops the watchdog timer by calling the RTAS function
* set-interval (surveillance)
*/
-static void
-wdrtas_timer_stop(void)
+static void wdrtas_timer_stop(void)
{
wdrtas_set_interval(0);
}
* wdrtas_log_scanned_event prints a message to the log buffer dumping
* the results of the last event-scan call
*/
-static void
-wdrtas_log_scanned_event(void)
+static void wdrtas_log_scanned_event(void)
{
int i;
"%02x %02x %02x %02x %02x %02x %02x %02x "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
(i / 16) + 1, (WDRTAS_LOGBUFFER_LEN / 16),
- wdrtas_logbuffer[i + 0], wdrtas_logbuffer[i + 1],
- wdrtas_logbuffer[i + 2], wdrtas_logbuffer[i + 3],
- wdrtas_logbuffer[i + 4], wdrtas_logbuffer[i + 5],
- wdrtas_logbuffer[i + 6], wdrtas_logbuffer[i + 7],
- wdrtas_logbuffer[i + 8], wdrtas_logbuffer[i + 9],
- wdrtas_logbuffer[i + 10], wdrtas_logbuffer[i + 11],
- wdrtas_logbuffer[i + 12], wdrtas_logbuffer[i + 13],
+ wdrtas_logbuffer[i + 0], wdrtas_logbuffer[i + 1],
+ wdrtas_logbuffer[i + 2], wdrtas_logbuffer[i + 3],
+ wdrtas_logbuffer[i + 4], wdrtas_logbuffer[i + 5],
+ wdrtas_logbuffer[i + 6], wdrtas_logbuffer[i + 7],
+ wdrtas_logbuffer[i + 8], wdrtas_logbuffer[i + 9],
+ wdrtas_logbuffer[i + 10], wdrtas_logbuffer[i + 11],
+ wdrtas_logbuffer[i + 12], wdrtas_logbuffer[i + 13],
wdrtas_logbuffer[i + 14], wdrtas_logbuffer[i + 15]);
}
* RTAS function event-scan and repeats these calls as long as there are
* events available. All events will be dumped.
*/
-static void
-wdrtas_timer_keepalive(void)
+static void wdrtas_timer_keepalive(void)
{
long result;
* wdrtas_get_temperature returns the current temperature in Fahrenheit. It
* uses the RTAS call get-sensor-state, token 3 to do so
*/
-static int
-wdrtas_get_temperature(void)
+static int wdrtas_get_temperature(void)
{
long result;
int temperature = 0;
* returns a bitmask of defines WDIOF_... as defined in
* include/linux/watchdog.h
*/
-static int
-wdrtas_get_status(void)
+static int wdrtas_get_status(void)
{
return 0; /* TODO */
}
* returns a bitmask of defines WDIOF_... as defined in
* include/linux/watchdog.h, indicating why the watchdog rebooted the system
*/
-static int
-wdrtas_get_boot_status(void)
+static int wdrtas_get_boot_status(void)
{
return 0; /* TODO */
}
* character 'V'. This character allows the watchdog device to be closed
* properly.
*/
-static ssize_t
-wdrtas_write(struct file *file, const char __user *buf,
+static ssize_t wdrtas_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
int i;
/**
* wdrtas_ioctl - ioctl function for the watchdog device
- * @inode: inode structure
* @file: file structure
* @cmd: command for ioctl
* @arg: argument pointer
*
* wdrtas_ioctl implements the watchdog API ioctls
*/
-static int
-wdrtas_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+
+static long wdrtas_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int __user *argp = (void __user *)arg;
int i;
wdrtas_timer_keepalive();
wdrtas_timer_start();
}
+ /* not implemented. Done by H8
if (i & WDIOS_TEMPPANIC) {
- /* not implemented. Done by H8 */
- }
+ } */
return 0;
case WDIOC_KEEPALIVE:
*
* function called when watchdog device is opened
*/
-static int
-wdrtas_open(struct inode *inode, struct file *file)
+static int wdrtas_open(struct inode *inode, struct file *file)
{
/* only open once */
if (atomic_inc_return(&wdrtas_miscdev_open) > 1) {
*
* close function. Always succeeds
*/
-static int
-wdrtas_close(struct inode *inode, struct file *file)
+static int wdrtas_close(struct inode *inode, struct file *file)
{
/* only stop watchdog, if this was announced using 'V' before */
if (wdrtas_expect_close == WDRTAS_MAGIC_CHAR)
* wdrtas_temp_read gives the temperature to the users by copying this
* value as one byte into the user space buffer. The unit is Fahrenheit...
*/
-static ssize_t
-wdrtas_temp_read(struct file *file, char __user *buf,
+static ssize_t wdrtas_temp_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
int temperature = 0;
*
* function called when temperature device is opened
*/
-static int
-wdrtas_temp_open(struct inode *inode, struct file *file)
+static int wdrtas_temp_open(struct inode *inode, struct file *file)
{
return nonseekable_open(inode, file);
}
*
* close function. Always succeeds
*/
-static int
-wdrtas_temp_close(struct inode *inode, struct file *file)
+static int wdrtas_temp_close(struct inode *inode, struct file *file)
{
return 0;
}
*
* wdrtas_reboot stops the watchdog in case of a reboot
*/
-static int
-wdrtas_reboot(struct notifier_block *this, unsigned long code, void *ptr)
+static int wdrtas_reboot(struct notifier_block *this,
+ unsigned long code, void *ptr)
{
- if ( (code==SYS_DOWN) || (code==SYS_HALT) )
+ if (code == SYS_DOWN || code == SYS_HALT)
wdrtas_timer_stop();
return NOTIFY_DONE;
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdrtas_write,
- .ioctl = wdrtas_ioctl,
+ .unlocked_ioctl = wdrtas_ioctl,
.open = wdrtas_open,
.release = wdrtas_close,
};
* this watchdog driver. It tolerates, if "get-sensor-state" and
* "ibm,get-system-parameter" are not available.
*/
-static int
-wdrtas_get_tokens(void)
+static int wdrtas_get_tokens(void)
{
wdrtas_token_get_sensor_state = rtas_token("get-sensor-state");
if (wdrtas_token_get_sensor_state == RTAS_UNKNOWN_SERVICE) {
* wdrtas_register_devs unregisters the watchdog and temperature watchdog
* misc devs
*/
-static void
-wdrtas_unregister_devs(void)
+static void wdrtas_unregister_devs(void)
{
misc_deregister(&wdrtas_miscdev);
if (wdrtas_token_get_sensor_state != RTAS_UNKNOWN_SERVICE)
* wdrtas_register_devs registers the watchdog and temperature watchdog
* misc devs
*/
-static int
-wdrtas_register_devs(void)
+static int wdrtas_register_devs(void)
{
int result;
*
* registers the file handlers and the reboot notifier
*/
-static int __init
-wdrtas_init(void)
+static int __init wdrtas_init(void)
{
if (wdrtas_get_tokens())
return -ENODEV;
*
* unregisters the file handlers and the reboot notifier
*/
-static void __exit
-wdrtas_exit(void)
+static void __exit wdrtas_exit(void)
{
if (!wdrtas_nowayout)
wdrtas_timer_stop();
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/uaccess.h>
+#include <linux/irq.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/hardware/dec21285.h>
return 0;
}
-static ssize_t
-watchdog_write(struct file *file, const char *data, size_t len, loff_t *ppos)
+static ssize_t watchdog_write(struct file *file, const char *data,
+ size_t len, loff_t *ppos)
{
/*
* Refresh the timer.
return len;
}
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
.options = WDIOF_SETTIMEOUT,
.identity = "Footbridge Watchdog",
};
-static int
-watchdog_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long watchdog_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
unsigned int new_margin;
int ret = -ENOTTY;
- switch(cmd) {
+ switch (cmd) {
case WDIOC_GETSUPPORT:
ret = 0;
if (copy_to_user((void *)arg, &ident, sizeof(ident)))
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
- ret = put_user(0,(int *)arg);
+ ret = put_user(0, (int *)arg);
break;
case WDIOC_KEEPALIVE:
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = watchdog_write,
- .ioctl = watchdog_ioctl,
+ .unlocked_ioctl = watchdog_ioctl,
.open = watchdog_open,
.release = watchdog_release,
};
if (retval < 0)
return retval;
- printk("Footbridge Watchdog Timer: 0.01, timer margin: %d sec\n",
- soft_margin);
+ 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_WARN
+ "Warning: Watchdog reset may not work on this machine.\n");
return 0;
}
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
module_param(soft_margin, int, 0);
-MODULE_PARM_DESC(soft_margin,"Watchdog timeout in seconds");
+MODULE_PARM_DESC(soft_margin, "Watchdog timeout in seconds");
module_init(footbridge_watchdog_init);
module_exit(footbridge_watchdog_exit);
* 07-Jul-2003 Daniele Bellucci: Audit return code of misc_register in
* nwwatchdog_init.
* 25-Oct-2005 Woody Suwalski: Convert addresses to #defs, add spinlocks
- * remove limitiation to be used on Netwinders only
+ * remove limitiation to be used on
+ * Netwinders only
*/
#include <linux/module.h>
#include <linux/watchdog.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
-#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach-types.h>
-#include <asm/uaccess.h>
#define WATCHDOG_VERSION "0.04"
#define WATCHDOG_NAME "Wdt977"
#define DRIVER_VERSION WATCHDOG_NAME " driver, v" WATCHDOG_VERSION "\n"
#define IO_INDEX_PORT 0x370 /* on some systems it can be 0x3F0 */
-#define IO_DATA_PORT (IO_INDEX_PORT+1)
+#define IO_DATA_PORT (IO_INDEX_PORT + 1)
#define UNLOCK_DATA 0x87
#define LOCK_DATA 0xAA
static DEFINE_SPINLOCK(spinlock);
module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout,"Watchdog timeout in seconds (60..15300), default=" __MODULE_STRING(DEFAULT_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds (60..15300), default="
+ __MODULE_STRING(DEFAULT_TIMEOUT) ")");
module_param(testmode, int, 0);
-MODULE_PARM_DESC(testmode,"Watchdog testmode (1 = no reboot), default=0");
+MODULE_PARM_DESC(testmode, "Watchdog testmode (1 = no reboot), default=0");
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) ")");
+MODULE_PARM_DESC(nowayout,
+ "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/*
* Start the watchdog
outb_p(0xF2, IO_INDEX_PORT);
outb_p(timeoutM, IO_DATA_PORT);
outb_p(0xF3, IO_INDEX_PORT);
- outb_p(0x00, IO_DATA_PORT); /* another setting is 0E for kbd/mouse/LED */
+ outb_p(0x00, IO_DATA_PORT); /* another setting is 0E for
+ kbd/mouse/LED */
outb_p(0xF4, IO_INDEX_PORT);
outb_p(0x00, IO_DATA_PORT);
- /* at last select device Aux1 (dev=7) and set GP16 as a watchdog output */
- /* in test mode watch the bit 1 on F4 to indicate "triggered" */
- if (!testmode)
- {
+ /* At last select device Aux1 (dev=7) and set GP16 as a
+ * watchdog output. In test mode watch the bit 1 on F4 to
+ * indicate "triggered"
+ */
+ if (!testmode) {
outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
outb_p(0x07, IO_DATA_PORT);
outb_p(0xE6, IO_INDEX_PORT);
outb_p(0xF2, IO_INDEX_PORT);
outb_p(0x00, IO_DATA_PORT);
- /* at last select device Aux1 (dev=7) and set GP16 as a watchdog output */
+ /* at last select device Aux1 (dev=7) and set
+ GP16 as a watchdog output */
outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
outb_p(0x07, IO_DATA_PORT);
outb_p(0xE6, IO_INDEX_PORT);
tmrval = (t + 59) / 60;
if (machine_is_netwinder()) {
- /* we have a hw bug somewhere, so each 977 minute is actually only 30sec
- * this limits the max timeout to half of device max of 255 minutes...
+ /* we have a hw bug somewhere, so each 977 minute is actually
+ * only 30sec. This limits the max timeout to half of device
+ * max of 255 minutes...
*/
tmrval += tmrval;
}
- if ((tmrval < 1) || (tmrval > 255))
+ if (tmrval < 1 || tmrval > 255)
return -EINVAL;
- /* timeout is the timeout in seconds, timeoutM is the timeout in minutes) */
+ /* timeout is the timeout in seconds, timeoutM is
+ the timeout in minutes) */
timeout = t;
timeoutM = tmrval;
return 0;
spin_unlock_irqrestore(&spinlock, flags);
- *status=0;
+ *status = 0;
if (new_status & 1)
*status |= WDIOF_CARDRESET;
static int wdt977_open(struct inode *inode, struct file *file)
{
/* If the watchdog is alive we don't need to start it again */
- if( test_and_set_bit(0,&timer_alive) )
+ if (test_and_set_bit(0, &timer_alive))
return -EBUSY;
if (nowayout)
* Shut off the timer.
* Lock it in if it's a module and we set nowayout
*/
- if (expect_close == 42)
- {
+ if (expect_close == 42) {
wdt977_stop();
- clear_bit(0,&timer_alive);
+ clear_bit(0, &timer_alive);
} else {
wdt977_keepalive();
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ printk(KERN_CRIT PFX
+ "Unexpected close, not stopping watchdog!\n");
}
expect_close = 0;
return 0;
static ssize_t wdt977_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
- if (count)
- {
- if (!nowayout)
- {
+ if (count) {
+ if (!nowayout) {
size_t i;
/* In case it was set long ago */
expect_close = 0;
- for (i = 0; i != count; i++)
- {
+ for (i = 0; i != count; i++) {
char c;
if (get_user(c, buf + i))
return -EFAULT;
return count;
}
+static const struct watchdog_info ident = {
+ .options = WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE |
+ WDIOF_KEEPALIVEPING,
+ .firmware_version = 1,
+ .identity = WATCHDOG_NAME,
+};
+
/*
* wdt977_ioctl:
* @inode: inode of the device
* according to their available features.
*/
-static struct watchdog_info ident = {
- .options = WDIOF_SETTIMEOUT |
- WDIOF_MAGICCLOSE |
- WDIOF_KEEPALIVEPING,
- .firmware_version = 1,
- .identity = WATCHDOG_NAME,
-};
-
-static int wdt977_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long wdt977_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
int status;
int new_options, retval = -EINVAL;
uarg.i = (int __user *)arg;
- switch(cmd)
- {
+ switch (cmd) {
default:
return -ENOTTY;
return 0;
case WDIOC_SETOPTIONS:
- if (get_user (new_options, uarg.i))
+ if (get_user(new_options, uarg.i))
return -EFAULT;
if (new_options & WDIOS_DISABLECARD) {
static int wdt977_notify_sys(struct notifier_block *this, unsigned long code,
void *unused)
{
- if(code==SYS_DOWN || code==SYS_HALT)
+ if (code == SYS_DOWN || code == SYS_HALT)
wdt977_stop();
return NOTIFY_DONE;
}
-static const struct file_operations wdt977_fops=
-{
+static const struct file_operations wdt977_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt977_write,
- .ioctl = wdt977_ioctl,
+ .unlocked_ioctl = wdt977_ioctl,
.open = wdt977_open,
.release = wdt977_release,
};
-static struct miscdevice wdt977_miscdev=
-{
+static struct miscdevice wdt977_miscdev = {
.minor = WATCHDOG_MINOR,
.name = "watchdog",
.fops = &wdt977_fops,
{
int rc;
- //if (!machine_is_netwinder())
- // return -ENODEV;
-
printk(KERN_INFO PFX DRIVER_VERSION);
- /* Check that the timeout value is within it's range ; if not reset to the default */
- if (wdt977_set_timeout(timeout))
- {
+ /* Check that the timeout value is within its range;
+ if not reset to the default */
+ if (wdt977_set_timeout(timeout)) {
wdt977_set_timeout(DEFAULT_TIMEOUT);
- printk(KERN_INFO PFX "timeout value must be 60<timeout<15300, using %d\n",
- DEFAULT_TIMEOUT);
+ printk(KERN_INFO PFX
+ "timeout value must be 60 < timeout < 15300, using %d\n",
+ DEFAULT_TIMEOUT);
}
/* on Netwinder the IOports are already reserved by
* arch/arm/mach-footbridge/netwinder-hw.c
*/
- if (!machine_is_netwinder())
- {
- if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME))
- {
- printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
- IO_INDEX_PORT);
+ if (!machine_is_netwinder()) {
+ if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME)) {
+ printk(KERN_ERR PFX
+ "I/O address 0x%04x already in use\n",
+ IO_INDEX_PORT);
rc = -EIO;
goto err_out;
}
}
rc = register_reboot_notifier(&wdt977_notifier);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region;
}
rc = misc_register(&wdt977_miscdev);
- if (rc)
- {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- wdt977_miscdev.minor, rc);
+ if (rc) {
+ printk(KERN_ERR PFX
+ "cannot register miscdev on minor=%d (err=%d)\n",
+ wdt977_miscdev.minor, rc);
goto err_out_reboot;
}
- printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d, testmode=%i)\n",
- timeout, nowayout, testmode);
+ printk(KERN_INFO PFX
+ "initialized. timeout=%d sec (nowayout=%d, testmode=%i)\n",
+ timeout, nowayout, testmode);
return 0;
unregister_reboot_notifier(&wdt977_notifier);
err_out_region:
if (!machine_is_netwinder())
- release_region(IO_INDEX_PORT,2);
+ release_region(IO_INDEX_PORT, 2);
err_out:
return rc;
}
wdt977_stop();
misc_deregister(&wdt977_miscdev);
unregister_reboot_notifier(&wdt977_notifier);
- release_region(IO_INDEX_PORT,2);
+ release_region(IO_INDEX_PORT, 2);
}
module_init(wd977_init);
git.samba.org / sfrench / cifs-2.6.git / commitdiff