diff options
Diffstat (limited to 'drivers/char/watchdog')
31 files changed, 154 insertions, 46 deletions
diff --git a/drivers/char/watchdog/at91_wdt.c b/drivers/char/watchdog/at91_wdt.c index ac83bc4b019a..f61dedc3c96c 100644 --- a/drivers/char/watchdog/at91_wdt.c +++ b/drivers/char/watchdog/at91_wdt.c @@ -9,7 +9,6 @@ * 2 of the License, or (at your option) any later version. */ -#include <linux/config.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/init.h> @@ -17,14 +16,15 @@ #include <linux/miscdevice.h> #include <linux/module.h> #include <linux/moduleparam.h> +#include <linux/platform_device.h> #include <linux/types.h> #include <linux/watchdog.h> #include <asm/bitops.h> #include <asm/uaccess.h> -#define WDT_DEFAULT_TIME 5 /* 5 seconds */ -#define WDT_MAX_TIME 256 /* 256 seconds */ +#define WDT_DEFAULT_TIME 5 /* seconds */ +#define WDT_MAX_TIME 256 /* seconds */ static int wdt_time = WDT_DEFAULT_TIME; static int nowayout = WATCHDOG_NOWAYOUT; @@ -32,8 +32,10 @@ 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) ")"); +#ifdef CONFIG_WATCHDOG_NOWAYOUT module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); +#endif static unsigned long at91wdt_busy; @@ -138,7 +140,7 @@ static int at91_wdt_ioctl(struct inode *inode, struct file *file, case WDIOC_SETTIMEOUT: if (get_user(new_value, p)) return -EFAULT; - + if (at91_wdt_settimeout(new_value)) return -EINVAL; @@ -196,27 +198,84 @@ static struct miscdevice at91wdt_miscdev = { .fops = &at91wdt_fops, }; -static int __init at91_wdt_init(void) +static int __init at91wdt_probe(struct platform_device *pdev) { int res; - /* 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); - printk(KERN_INFO "at91_wdt: wdt_time value must be 1 <= wdt_time <= 256, using %d\n", wdt_time); - } + if (at91wdt_miscdev.dev) + return -EBUSY; + at91wdt_miscdev.dev = &pdev->dev; res = misc_register(&at91wdt_miscdev); if (res) return res; - printk("AT91 Watchdog Timer enabled (%d seconds, nowayout=%d)\n", wdt_time, nowayout); + printk("AT91 Watchdog Timer enabled (%d seconds%s)\n", wdt_time, nowayout ? ", nowayout" : ""); return 0; } +static int __exit at91wdt_remove(struct platform_device *pdev) +{ + int res; + + res = misc_deregister(&at91wdt_miscdev); + if (!res) + at91wdt_miscdev.dev = NULL; + + return res; +} + +static void at91wdt_shutdown(struct platform_device *pdev) +{ + at91_wdt_stop(); +} + +#ifdef CONFIG_PM + +static int at91wdt_suspend(struct platform_device *pdev, pm_message_t message) +{ + at91_wdt_stop(); + return 0; +} + +static int at91wdt_resume(struct platform_device *pdev) +{ + if (at91wdt_busy) + at91_wdt_start(); + return 0; +} + +#else +#define at91wdt_suspend NULL +#define at91wdt_resume NULL +#endif + +static struct platform_driver at91wdt_driver = { + .probe = at91wdt_probe, + .remove = __exit_p(at91wdt_remove), + .shutdown = at91wdt_shutdown, + .suspend = at91wdt_suspend, + .resume = at91wdt_resume, + .driver = { + .name = "at91_wdt", + .owner = THIS_MODULE, + }, +}; + +static int __init at91_wdt_init(void) +{ + /* 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); + } + + return platform_driver_register(&at91wdt_driver); +} + static void __exit at91_wdt_exit(void) { - misc_deregister(&at91wdt_miscdev); + platform_driver_unregister(&at91wdt_driver); } module_init(at91_wdt_init); diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c index b6640606b44d..537f5c6729bf 100644 --- a/drivers/char/watchdog/booke_wdt.c +++ b/drivers/char/watchdog/booke_wdt.c @@ -14,7 +14,6 @@ * option) any later version. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/fs.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/eurotechwdt.c b/drivers/char/watchdog/eurotechwdt.c index 25c2f2575611..ea670de4fab7 100644 --- a/drivers/char/watchdog/eurotechwdt.c +++ b/drivers/char/watchdog/eurotechwdt.c @@ -40,7 +40,6 @@ * Added Matt Domsch's nowayout module option. */ -#include <linux/config.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/moduleparam.h> @@ -421,7 +420,7 @@ static int __init eurwdt_init(void) goto out; } - ret = request_irq(irq, eurwdt_interrupt, SA_INTERRUPT, "eurwdt", NULL); + ret = request_irq(irq, eurwdt_interrupt, IRQF_DISABLED, "eurwdt", NULL); if(ret) { printk(KERN_ERR "eurwdt: IRQ %d is not free.\n", irq); goto outmisc; diff --git a/drivers/char/watchdog/i8xx_tco.c b/drivers/char/watchdog/i8xx_tco.c index fa2ba9ebe42a..bfbdbbf3c2f2 100644 --- a/drivers/char/watchdog/i8xx_tco.c +++ b/drivers/char/watchdog/i8xx_tco.c @@ -205,6 +205,23 @@ static int tco_timer_set_heartbeat (int t) return 0; } +static int tco_timer_get_timeleft (int *time_left) +{ + unsigned char val; + + spin_lock(&tco_lock); + + /* read the TCO Timer */ + val = inb (TCO1_RLD); + val &= 0x3f; + + spin_unlock(&tco_lock); + + *time_left = (int)((val * 6) / 10); + + return 0; +} + /* * /dev/watchdog handling */ @@ -272,6 +289,7 @@ static int i8xx_tco_ioctl (struct inode *inode, struct file *file, { int new_options, retval = -EINVAL; int new_heartbeat; + int time_left; void __user *argp = (void __user *)arg; int __user *p = argp; static struct watchdog_info ident = { @@ -320,7 +338,7 @@ static int i8xx_tco_ioctl (struct inode *inode, struct file *file, return -EFAULT; if (tco_timer_set_heartbeat(new_heartbeat)) - return -EINVAL; + return -EINVAL; tco_timer_keepalive (); /* Fall */ @@ -329,6 +347,14 @@ static int i8xx_tco_ioctl (struct inode *inode, struct file *file, case WDIOC_GETTIMEOUT: return put_user(heartbeat, p); + case WDIOC_GETTIMELEFT: + { + if (tco_timer_get_timeleft(&time_left)) + return -EINVAL; + + return put_user(time_left, p); + } + default: return -ENOIOCTLCMD; } diff --git a/drivers/char/watchdog/ib700wdt.c b/drivers/char/watchdog/ib700wdt.c index cf60329eec85..a2e53c715b36 100644 --- a/drivers/char/watchdog/ib700wdt.c +++ b/drivers/char/watchdog/ib700wdt.c @@ -31,7 +31,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/types.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/ibmasr.c b/drivers/char/watchdog/ibmasr.c index 294c474ae485..b0741cbdc139 100644 --- a/drivers/char/watchdog/ibmasr.c +++ b/drivers/char/watchdog/ibmasr.c @@ -10,7 +10,6 @@ * of the GNU Public License, incorporated herein by reference. */ -#include <linux/config.h> #include <linux/fs.h> #include <linux/kernel.h> #include <linux/slab.h> diff --git a/drivers/char/watchdog/indydog.c b/drivers/char/watchdog/indydog.c index b4b94daba67e..d387979b2434 100644 --- a/drivers/char/watchdog/indydog.c +++ b/drivers/char/watchdog/indydog.c @@ -13,7 +13,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/fs.h> diff --git a/drivers/char/watchdog/ixp2000_wdt.c b/drivers/char/watchdog/ixp2000_wdt.c index 0cfb9b9c4a4b..aa29a7d68759 100644 --- a/drivers/char/watchdog/ixp2000_wdt.c +++ b/drivers/char/watchdog/ixp2000_wdt.c @@ -16,7 +16,6 @@ * warranty of any kind, whether express or implied. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> diff --git a/drivers/char/watchdog/ixp4xx_wdt.c b/drivers/char/watchdog/ixp4xx_wdt.c index 3800835ca8f3..e6a3fe83fa01 100644 --- a/drivers/char/watchdog/ixp4xx_wdt.c +++ b/drivers/char/watchdog/ixp4xx_wdt.c @@ -13,7 +13,6 @@ * warranty of any kind, whether express or implied. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> diff --git a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c index a9a20aad61e7..b67b4878ae0f 100644 --- a/drivers/char/watchdog/machzwd.c +++ b/drivers/char/watchdog/machzwd.c @@ -28,7 +28,6 @@ * Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> diff --git a/drivers/char/watchdog/mixcomwd.c b/drivers/char/watchdog/mixcomwd.c index d8dede575402..433c27f98159 100644 --- a/drivers/char/watchdog/mixcomwd.c +++ b/drivers/char/watchdog/mixcomwd.c @@ -37,7 +37,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/miscdevice.h> #include <linux/ioport.h> diff --git a/drivers/char/watchdog/mpc83xx_wdt.c b/drivers/char/watchdog/mpc83xx_wdt.c index 5d6f5061603a..dac1381af364 100644 --- a/drivers/char/watchdog/mpc83xx_wdt.c +++ b/drivers/char/watchdog/mpc83xx_wdt.c @@ -15,7 +15,6 @@ * option) any later version. */ -#include <linux/config.h> #include <linux/fs.h> #include <linux/init.h> #include <linux/kernel.h> diff --git a/drivers/char/watchdog/mpc8xx_wdt.c b/drivers/char/watchdog/mpc8xx_wdt.c index b2fc71e20850..11f0ccd4c4d4 100644 --- a/drivers/char/watchdog/mpc8xx_wdt.c +++ b/drivers/char/watchdog/mpc8xx_wdt.c @@ -9,7 +9,6 @@ * or implied. */ -#include <linux/config.h> #include <linux/fs.h> #include <linux/init.h> #include <linux/kernel.h> diff --git a/drivers/char/watchdog/mpcore_wdt.c b/drivers/char/watchdog/mpcore_wdt.c index 2c2c51773200..c2d492c852fc 100644 --- a/drivers/char/watchdog/mpcore_wdt.c +++ b/drivers/char/watchdog/mpcore_wdt.c @@ -21,7 +21,6 @@ */ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/miscdevice.h> #include <linux/watchdog.h> @@ -356,7 +355,7 @@ static int __devinit mpcore_wdt_probe(struct platform_device *dev) goto err_misc; } - ret = request_irq(wdt->irq, mpcore_wdt_fire, SA_INTERRUPT, "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); goto err_irq; diff --git a/drivers/char/watchdog/mv64x60_wdt.c b/drivers/char/watchdog/mv64x60_wdt.c index f1b9cf89f153..20a6cbb0fbb8 100644 --- a/drivers/char/watchdog/mv64x60_wdt.c +++ b/drivers/char/watchdog/mv64x60_wdt.c @@ -15,7 +15,6 @@ * or implied. */ -#include <linux/config.h> #include <linux/fs.h> #include <linux/init.h> #include <linux/kernel.h> diff --git a/drivers/char/watchdog/pcwd_pci.c b/drivers/char/watchdog/pcwd_pci.c index 2451edbefece..1f40ecefbf72 100644 --- a/drivers/char/watchdog/pcwd_pci.c +++ b/drivers/char/watchdog/pcwd_pci.c @@ -21,7 +21,7 @@ */ /* - * A bells and whistles driver is available from: + * A bells and whistles driver is available from: * http://www.kernel.org/pub/linux/kernel/people/wim/pcwd/pcwd_pci/ * * More info available at http://www.berkprod.com/ or http://www.pcwatchdog.com/ @@ -390,6 +390,24 @@ static int pcipcwd_get_temperature(int *temperature) return 0; } +static int pcipcwd_get_timeleft(int *time_left) +{ + int msb; + int lsb; + + /* Read the time that's left before rebooting */ + /* Note: if the board is not yet armed then we will read 0xFFFF */ + send_command(CMD_READ_WATCHDOG_TIMEOUT, &msb, &lsb); + + *time_left = (msb << 8) + lsb; + + if (debug >= VERBOSE) + printk(KERN_DEBUG PFX "Time left before next reboot: %d\n", + *time_left); + + return 0; +} + /* * /dev/watchdog handling */ @@ -512,6 +530,16 @@ static int pcipcwd_ioctl(struct inode *inode, struct file *file, case WDIOC_GETTIMEOUT: return put_user(heartbeat, p); + case WDIOC_GETTIMELEFT: + { + int time_left; + + if (pcipcwd_get_timeleft(&time_left)) + return -EFAULT; + + return put_user(time_left, p); + } + default: return -ENOIOCTLCMD; } diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c index 3fdfda9324fa..92bf8c1a0f0d 100644 --- a/drivers/char/watchdog/pcwd_usb.c +++ b/drivers/char/watchdog/pcwd_usb.c @@ -24,7 +24,6 @@ * http://www.berkprod.com/ or http://www.pcwatchdog.com/ */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> @@ -317,6 +316,19 @@ static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd, int *temp return 0; } +static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd, int *time_left) +{ + unsigned char msb, lsb; + + /* Read the time that's left before rebooting */ + /* Note: if the board is not yet armed then we will read 0xFFFF */ + usb_pcwd_send_command(usb_pcwd, CMD_READ_WATCHDOG_TIMEOUT, &msb, &lsb); + + *time_left = (msb << 8) + lsb; + + return 0; +} + /* * /dev/watchdog handling */ @@ -422,6 +434,16 @@ static int usb_pcwd_ioctl(struct inode *inode, struct file *file, case WDIOC_GETTIMEOUT: return put_user(heartbeat, p); + case WDIOC_GETTIMELEFT: + { + int time_left; + + if (usb_pcwd_get_timeleft(usb_pcwd_device, &time_left)) + return -EFAULT; + + return put_user(time_left, p); + } + default: return -ENOIOCTLCMD; } diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c index 1ea04e9b2b0b..f267dad26071 100644 --- a/drivers/char/watchdog/s3c2410_wdt.c +++ b/drivers/char/watchdog/s3c2410_wdt.c @@ -37,7 +37,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/timer.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/sa1100_wdt.c b/drivers/char/watchdog/sa1100_wdt.c index 522a9370db94..b22e95c5470c 100644 --- a/drivers/char/watchdog/sa1100_wdt.c +++ b/drivers/char/watchdog/sa1100_wdt.c @@ -17,7 +17,6 @@ * * 27/11/2000 Initial release */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> diff --git a/drivers/char/watchdog/sbc8360.c b/drivers/char/watchdog/sbc8360.c index c6cbf808d8c2..6562aa910ace 100644 --- a/drivers/char/watchdog/sbc8360.c +++ b/drivers/char/watchdog/sbc8360.c @@ -36,7 +36,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/types.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/sbc_epx_c3.c b/drivers/char/watchdog/sbc_epx_c3.c index 837b1ec3ffe3..09867fadc720 100644 --- a/drivers/char/watchdog/sbc_epx_c3.c +++ b/drivers/char/watchdog/sbc_epx_c3.c @@ -15,7 +15,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/fs.h> diff --git a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c index 20b88f9b7be2..78ef6333c181 100644 --- a/drivers/char/watchdog/sc1200wdt.c +++ b/drivers/char/watchdog/sc1200wdt.c @@ -27,7 +27,6 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/scx200_wdt.c b/drivers/char/watchdog/scx200_wdt.c index b4a102a2d7e3..c0b4754e8de0 100644 --- a/drivers/char/watchdog/scx200_wdt.c +++ b/drivers/char/watchdog/scx200_wdt.c @@ -17,7 +17,6 @@ of any nature resulting due to the use of this software. This software is provided AS-IS with no warranties. */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> diff --git a/drivers/char/watchdog/shwdt.c b/drivers/char/watchdog/shwdt.c index 1f4cab55b2ef..803701b675c0 100644 --- a/drivers/char/watchdog/shwdt.c +++ b/drivers/char/watchdog/shwdt.c @@ -17,7 +17,6 @@ * Added expect close support, made emulated timeout runtime changeable * general cleanups, add some ioctls */ -#include <linux/config.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> diff --git a/drivers/char/watchdog/softdog.c b/drivers/char/watchdog/softdog.c index a91edaf3a350..79ce5c655428 100644 --- a/drivers/char/watchdog/softdog.c +++ b/drivers/char/watchdog/softdog.c @@ -38,7 +38,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/timer.h> #include <linux/miscdevice.h> diff --git a/drivers/char/watchdog/w83977f_wdt.c b/drivers/char/watchdog/w83977f_wdt.c index a7ff64c8921f..c31849e4c5c2 100644 --- a/drivers/char/watchdog/w83977f_wdt.c +++ b/drivers/char/watchdog/w83977f_wdt.c @@ -17,7 +17,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/fs.h> diff --git a/drivers/char/watchdog/wd501p.h b/drivers/char/watchdog/wd501p.h index 84e60eb74337..a4504f40394d 100644 --- a/drivers/char/watchdog/wd501p.h +++ b/drivers/char/watchdog/wd501p.h @@ -19,7 +19,6 @@ * */ -#include <linux/config.h> #define WDT_COUNT0 (io+0) #define WDT_COUNT1 (io+1) diff --git a/drivers/char/watchdog/wdrtas.c b/drivers/char/watchdog/wdrtas.c index dacfe31caccf..3a462c34b92a 100644 --- a/drivers/char/watchdog/wdrtas.c +++ b/drivers/char/watchdog/wdrtas.c @@ -26,7 +26,6 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/config.h> #include <linux/fs.h> #include <linux/init.h> #include <linux/kernel.h> diff --git a/drivers/char/watchdog/wdt.c b/drivers/char/watchdog/wdt.c index ec7e401228ee..a1d972c8f44c 100644 --- a/drivers/char/watchdog/wdt.c +++ b/drivers/char/watchdog/wdt.c @@ -31,7 +31,6 @@ * Matt Domsch : Added nowayout module option */ -#include <linux/config.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/moduleparam.h> @@ -581,7 +580,7 @@ static int __init wdt_init(void) goto out; } - ret = request_irq(irq, wdt_interrupt, SA_INTERRUPT, "wdt501p", NULL); + ret = request_irq(irq, wdt_interrupt, IRQF_DISABLED, "wdt501p", NULL); if(ret) { printk(KERN_ERR "wdt: IRQ %d is not free.\n", irq); goto outreg; diff --git a/drivers/char/watchdog/wdt977.c b/drivers/char/watchdog/wdt977.c index 3843900e94c4..3cde2b9bb763 100644 --- a/drivers/char/watchdog/wdt977.c +++ b/drivers/char/watchdog/wdt977.c @@ -24,7 +24,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/config.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/fs.h> diff --git a/drivers/char/watchdog/wdt_pci.c b/drivers/char/watchdog/wdt_pci.c index 4b3311993d48..7529ecdbabae 100644 --- a/drivers/char/watchdog/wdt_pci.c +++ b/drivers/char/watchdog/wdt_pci.c @@ -35,7 +35,6 @@ * Matt Domsch : nowayout module option */ -#include <linux/config.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/moduleparam.h> @@ -618,7 +617,7 @@ static int __devinit wdtpci_init_one (struct pci_dev *dev, goto out_pci; } - if (request_irq (irq, wdtpci_interrupt, SA_INTERRUPT | SA_SHIRQ, + if (request_irq (irq, wdtpci_interrupt, IRQF_DISABLED | IRQF_SHARED, "wdt_pci", &wdtpci_miscdev)) { printk (KERN_ERR PFX "IRQ %d is not free\n", irq); goto out_reg; |