*
* (c) Copyright 2000-2001 Marek Michalkiewicz <marekm@linux.org.pl>
*
- * (c) Copyright 1996 Alan Cox <alan@redhat.com>, All Rights Reserved.
- * http://www.redhat.com
+ * (c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ * 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
* warranty for any of this software. This material is provided
* "AS-IS" and at no charge.
*
- * (c) Copyright 1995 Alan Cox <alan@redhat.com>
+ * (c) Copyright 1995 Alan Cox <alan@lxorguk.ukuu.org.uk>
*/
#include <linux/module.h>
#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) {
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')
expect_close = 42;
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);
-
- case WDIOC_KEEPALIVE:
- 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 */
-
- case WDIOC_GETTIMEOUT:
- return put_user(timeout, p);
-
+ return put_user(0, 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;
}
-
+ case WDIOC_KEEPALIVE:
+ 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 */
+ case WDIOC_GETTIMEOUT:
+ return put_user(timeout, p);
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) {
- /* Turn the WDT off */
- wdt_disable();
- }
+ if (code == SYS_DOWN || code == SYS_HALT)
+ wdt_disable(); /* Turn the WDT off */
+
return NOTIFY_DONE;
}
.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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff