diff options
Diffstat (limited to 'drivers/char/watchdog')
32 files changed, 394 insertions, 289 deletions
diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig index b53e2e2b5ae..c3898afce3a 100644 --- a/drivers/char/watchdog/Kconfig +++ b/drivers/char/watchdog/Kconfig @@ -346,6 +346,13 @@ config 8xx_WDT tristate "MPC8xx Watchdog Timer" depends on WATCHDOG && 8xx +config BOOKE_WDT + tristate "PowerPC Book-E Watchdog Timer" + depends on WATCHDOG && (BOOKE || 4xx) + ---help--- + Please see Documentation/watchdog/watchdog-api.txt for + more information. + # MIPS Architecture config INDYDOG diff --git a/drivers/char/watchdog/Makefile b/drivers/char/watchdog/Makefile index c1838834ea7..cfeac6f1013 100644 --- a/drivers/char/watchdog/Makefile +++ b/drivers/char/watchdog/Makefile @@ -2,42 +2,68 @@ # Makefile for the WatchDog device drivers. # +# Only one watchdog can succeed. We probe the ISA/PCI/USB based +# watchdog-cards first, then the architecture specific watchdog +# drivers and then the architecture independant "softdog" driver. +# This means that if your ISA/PCI/USB card isn't detected that +# you can fall back to an architecture specific driver and if +# that also fails then you can fall back to the software watchdog +# to give you some cover. + +# ISA-based Watchdog Cards obj-$(CONFIG_PCWATCHDOG) += pcwd.o -obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o -obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o -obj-$(CONFIG_IB700_WDT) += ib700wdt.o obj-$(CONFIG_MIXCOMWD) += mixcomwd.o -obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o -obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o obj-$(CONFIG_WDT) += wdt.o + +# PCI-based Watchdog Cards +obj-$(CONFIG_PCIPCWATCHDOG) += pcwd_pci.o obj-$(CONFIG_WDTPCI) += wdt_pci.o + +# USB-based Watchdog Cards +obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o + +# ARM Architecture obj-$(CONFIG_21285_WATCHDOG) += wdt285.o obj-$(CONFIG_977_WATCHDOG) += wdt977.o -obj-$(CONFIG_I8XX_TCO) += i8xx_tco.o -obj-$(CONFIG_MACHZ_WDT) += machzwd.o -obj-$(CONFIG_SH_WDT) += shwdt.o +obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o +obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o -obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o -obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o -obj-$(CONFIG_W83627HF_WDT) += w83627hf_wdt.o -obj-$(CONFIG_SC520_WDT) += sc520_wdt.o -obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o + +# X86 (i386 + ia64 + x86_64) Architecture +obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o +obj-$(CONFIG_ADVANTECH_WDT) += advantechwdt.o obj-$(CONFIG_ALIM1535_WDT) += alim1535_wdt.o -obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o +obj-$(CONFIG_ALIM7101_WDT) += alim7101_wdt.o +obj-$(CONFIG_SC520_WDT) += sc520_wdt.o +obj-$(CONFIG_EUROTECH_WDT) += eurotechwdt.o +obj-$(CONFIG_IB700_WDT) += ib700wdt.o obj-$(CONFIG_WAFER_WDT) += wafer5823wdt.o +obj-$(CONFIG_I8XX_TCO) += i8xx_tco.o +obj-$(CONFIG_SC1200_WDT) += sc1200wdt.o +obj-$(CONFIG_SCx200_WDT) += scx200_wdt.o +obj-$(CONFIG_60XX_WDT) += sbc60xxwdt.o obj-$(CONFIG_CPU5_WDT) += cpu5wdt.o -obj-$(CONFIG_INDYDOG) += indydog.o -obj-$(CONFIG_PCIPCWATCHDOG) += pcwd_pci.o -obj-$(CONFIG_USBPCWATCHDOG) += pcwd_usb.o -obj-$(CONFIG_IXP4XX_WATCHDOG) += ixp4xx_wdt.o -obj-$(CONFIG_IXP2000_WATCHDOG) += ixp2000_wdt.o +obj-$(CONFIG_W83627HF_WDT) += w83627hf_wdt.o +obj-$(CONFIG_W83877F_WDT) += w83877f_wdt.o +obj-$(CONFIG_MACHZ_WDT) += machzwd.o + +# PowerPC Architecture obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o + +# PPC64 Architecture obj-$(CONFIG_WATCHDOG_RTAS) += wdrtas.o +obj-$(CONFIG_BOOKE_WDT) += booke_wdt.o + +# MIPS Architecture +obj-$(CONFIG_INDYDOG) += indydog.o + +# S390 Architecture + +# SUPERH Architecture +obj-$(CONFIG_SH_WDT) += shwdt.o -# Only one watchdog can succeed. We probe the hardware watchdog -# drivers first, then the softdog driver. This means if your hardware -# watchdog dies or is 'borrowed' for some reason the software watchdog -# still gives you some cover. +# SPARC64 Architecture +# Architecture Independant obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o diff --git a/drivers/char/watchdog/acquirewdt.c b/drivers/char/watchdog/acquirewdt.c index 8f302121741..7289f4af93d 100644 --- a/drivers/char/watchdog/acquirewdt.c +++ b/drivers/char/watchdog/acquirewdt.c @@ -82,12 +82,7 @@ static int wdt_start = 0x443; module_param(wdt_start, int, 0); MODULE_PARM_DESC(wdt_start, "Acquire WDT 'start' io port (default 0x443)"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/advantechwdt.c b/drivers/char/watchdog/advantechwdt.c index ea73c8379bd..194a3fd36b9 100644 --- a/drivers/char/watchdog/advantechwdt.c +++ b/drivers/char/watchdog/advantechwdt.c @@ -73,12 +73,7 @@ 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) "."); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/alim1535_wdt.c b/drivers/char/watchdog/alim1535_wdt.c index 35dcbf8be7d..8338ca300e2 100644 --- a/drivers/char/watchdog/alim1535_wdt.c +++ b/drivers/char/watchdog/alim1535_wdt.c @@ -38,12 +38,7 @@ 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) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -317,7 +312,7 @@ static int ali_notify_sys(struct notifier_block *this, unsigned long code, void */ static struct pci_device_id ali_pci_tbl[] = { - { PCI_VENDOR_ID_AL, 1535, PCI_ANY_ID, PCI_ANY_ID,}, + { PCI_VENDOR_ID_AL, 0x1535, PCI_ANY_ID, PCI_ANY_ID,}, { 0, }, }; MODULE_DEVICE_TABLE(pci, ali_pci_tbl); diff --git a/drivers/char/watchdog/alim7101_wdt.c b/drivers/char/watchdog/alim7101_wdt.c index 90c091d9e0f..c05ac188a4d 100644 --- a/drivers/char/watchdog/alim7101_wdt.c +++ b/drivers/char/watchdog/alim7101_wdt.c @@ -75,12 +75,7 @@ static unsigned long wdt_is_open; static char wdt_expect_close; static struct pci_dev *alim7101_pmu; -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/booke_wdt.c b/drivers/char/watchdog/booke_wdt.c new file mode 100644 index 00000000000..abc30cca664 --- /dev/null +++ b/drivers/char/watchdog/booke_wdt.c @@ -0,0 +1,192 @@ +/* + * drivers/char/watchdog/booke_wdt.c + * + * Watchdog timer for PowerPC Book-E systems + * + * Author: Matthew McClintock + * Maintainer: Kumar Gala <kumar.gala@freescale.com> + * + * Copyright 2005 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/fs.h> +#include <linux/miscdevice.h> +#include <linux/notifier.h> +#include <linux/watchdog.h> + +#include <asm/reg_booke.h> +#include <asm/uaccess.h> +#include <asm/system.h> + +/* If the kernel parameter wdt_enable=1, the watchdog will be enabled at boot. + * Also, the wdt_period sets the watchdog timer period timeout. + * For E500 cpus the wdt_period sets which bit changing from 0->1 will + * trigger a watchog timeout. This watchdog timeout will occur 3 times, the + * first time nothing will happen, the second time a watchdog exception will + * occur, and the final time the board will reset. + */ + +#ifdef CONFIG_FSL_BOOKE +#define WDT_PERIOD_DEFAULT 63 /* Ex. wdt_period=28 bus=333Mhz , reset=~40sec */ +#else +#define WDT_PERIOD_DEFAULT 4 /* Refer to the PPC40x and PPC4xx manuals */ +#endif /* for timing information */ + +u32 booke_wdt_enabled = 0; +u32 booke_wdt_period = WDT_PERIOD_DEFAULT; + +#ifdef CONFIG_FSL_BOOKE +#define WDTP(x) ((((63-x)&0x3)<<30)|(((63-x)&0x3c)<<15)) +#else +#define WDTP(x) (TCR_WP(x)) +#endif + +/* + * booke_wdt_enable: + */ +static __inline__ void booke_wdt_enable(void) +{ + u32 val; + + val = mfspr(SPRN_TCR); + val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period)); + + mtspr(SPRN_TCR, val); +} + +/* + * booke_wdt_ping: + */ +static __inline__ void booke_wdt_ping(void) +{ + mtspr(SPRN_TSR, TSR_ENW|TSR_WIS); +} + +/* + * booke_wdt_write: + */ +static ssize_t booke_wdt_write (struct file *file, const char *buf, + size_t count, loff_t *ppos) +{ + booke_wdt_ping(); + return count; +} + +static struct watchdog_info ident = { + .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, + .firmware_version = 0, + .identity = "PowerPC Book-E Watchdog", +}; + +/* + * booke_wdt_ioctl: + */ +static int booke_wdt_ioctl (struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + u32 tmp = 0; + + switch (cmd) { + case WDIOC_GETSUPPORT: + if (copy_to_user ((struct watchdog_info *) arg, &ident, + sizeof(struct watchdog_info))) + return -EFAULT; + case WDIOC_GETSTATUS: + return put_user(ident.options, (u32 *) arg); + case WDIOC_GETBOOTSTATUS: + /* XXX: something is clearing TSR */ + tmp = mfspr(SPRN_TSR) & TSR_WRS(3); + /* returns 1 if last reset was caused by the WDT */ + return (tmp ? 1 : 0); + case WDIOC_KEEPALIVE: + booke_wdt_ping(); + return 0; + case WDIOC_SETTIMEOUT: + if (get_user(booke_wdt_period, (u32 *) arg)) + return -EFAULT; + mtspr(SPRN_TCR, (mfspr(SPRN_TCR)&~WDTP(0))|WDTP(booke_wdt_period)); + return 0; + case WDIOC_GETTIMEOUT: + return put_user(booke_wdt_period, (u32 *) arg); + case WDIOC_SETOPTIONS: + if (get_user(tmp, (u32 *) arg)) + return -EINVAL; + if (tmp == WDIOS_ENABLECARD) { + booke_wdt_ping(); + break; + } else + return -EINVAL; + return 0; + default: + return -ENOIOCTLCMD; + } + + return 0; +} +/* + * booke_wdt_open: + */ +static int booke_wdt_open (struct inode *inode, struct file *file) +{ + if (booke_wdt_enabled == 0) { + booke_wdt_enabled = 1; + booke_wdt_enable(); + printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n", + booke_wdt_period); + } + + return 0; +} + +static struct file_operations booke_wdt_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .write = booke_wdt_write, + .ioctl = booke_wdt_ioctl, + .open = booke_wdt_open, +}; + +static struct miscdevice booke_wdt_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &booke_wdt_fops, +}; + +static void __exit booke_wdt_exit(void) +{ + misc_deregister(&booke_wdt_miscdev); +} + +/* + * booke_wdt_init: + */ +static int __init booke_wdt_init(void) +{ + int ret = 0; + + printk (KERN_INFO "PowerPC Book-E Watchdog Timer Loaded\n"); + ident.firmware_version = cpu_specs[0].pvr_value; + + ret = misc_register(&booke_wdt_miscdev); + if (ret) { + printk (KERN_CRIT "Cannot register miscdev on minor=%d (err=%d)\n", + WATCHDOG_MINOR, ret); + return ret; + } + + if (booke_wdt_enabled == 1) { + printk (KERN_INFO "PowerPC Book-E Watchdog Timer Enabled (wdt_period=%d)\n", + booke_wdt_period); + booke_wdt_enable(); + } + + return ret; +} +device_initcall(booke_wdt_init); diff --git a/drivers/char/watchdog/eurotechwdt.c b/drivers/char/watchdog/eurotechwdt.c index d10e554a14d..25c2f257561 100644 --- a/drivers/char/watchdog/eurotechwdt.c +++ b/drivers/char/watchdog/eurotechwdt.c @@ -72,12 +72,7 @@ static char *ev = "int"; #define WDT_TIMEOUT 60 /* 1 minute */ -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -167,7 +162,7 @@ static irqreturn_t eurwdt_interrupt(int irq, void *dev_id, struct pt_regs *regs) printk(KERN_CRIT "Would Reboot.\n"); #else printk(KERN_CRIT "Initiating system reboot.\n"); - machine_restart(NULL); + emergency_restart(); #endif return IRQ_HANDLED; } diff --git a/drivers/char/watchdog/i8xx_tco.c b/drivers/char/watchdog/i8xx_tco.c index 5d07ee59679..a13395e2c37 100644 --- a/drivers/char/watchdog/i8xx_tco.c +++ b/drivers/char/watchdog/i8xx_tco.c @@ -1,5 +1,5 @@ /* - * i8xx_tco 0.07: TCO timer driver for i8xx chipsets + * i8xx_tco: TCO timer driver for i8xx chipsets * * (c) Copyright 2000 kernel concepts <nils@kernelconcepts.de>, All Rights Reserved. * http://www.kernelconcepts.de @@ -63,6 +63,9 @@ * 20050128 Wim Van Sebroeck <wim@iguana.be> * 0.07 Added support for the ICH4-M, ICH6, ICH6R, ICH6-M, ICH6W and ICH6RW * chipsets. Also added support for the "undocumented" ICH7 chipset. + * 20050807 Wim Van Sebroeck <wim@iguana.be> + * 0.08 Make sure that the watchdog is only "armed" when started. + * (Kernel Bug 4251) */ /* @@ -87,7 +90,7 @@ #include "i8xx_tco.h" /* Module and version information */ -#define TCO_VERSION "0.07" +#define TCO_VERSION "0.08" #define TCO_MODULE_NAME "i8xx TCO timer" #define TCO_DRIVER_NAME TCO_MODULE_NAME ", v" TCO_VERSION #define PFX TCO_MODULE_NAME ": " @@ -105,12 +108,7 @@ static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */ module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<heartbeat<39, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -130,10 +128,18 @@ static int tco_timer_start (void) unsigned char val; spin_lock(&tco_lock); + + /* disable chipset's NO_REBOOT bit */ + pci_read_config_byte (i8xx_tco_pci, 0xd4, &val); + val &= 0xfd; + pci_write_config_byte (i8xx_tco_pci, 0xd4, val); + + /* Bit 11: TCO Timer Halt -> 0 = The TCO timer is enabled to count */ val = inb (TCO1_CNT + 1); val &= 0xf7; outb (val, TCO1_CNT + 1); val = inb (TCO1_CNT + 1); + spin_unlock(&tco_lock); if (val & 0x08) @@ -143,13 +149,20 @@ static int tco_timer_start (void) static int tco_timer_stop (void) { - unsigned char val; + unsigned char val, val1; spin_lock(&tco_lock); + /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */ val = inb (TCO1_CNT + 1); val |= 0x08; outb (val, TCO1_CNT + 1); val = inb (TCO1_CNT + 1); + + /* Set the NO_REBOOT bit to prevent later reboots, just for sure */ + pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1); + val1 |= 0x02; + pci_write_config_byte (i8xx_tco_pci, 0xd4, val1); + spin_unlock(&tco_lock); if ((val & 0x08) == 0) @@ -160,6 +173,7 @@ static int tco_timer_stop (void) static int tco_timer_keepalive (void) { spin_lock(&tco_lock); + /* Reload the timer by writing to the TCO Timer Reload register */ outb (0x01, TCO1_RLD); spin_unlock(&tco_lock); return 0; @@ -422,9 +436,8 @@ static unsigned char __init i8xx_tco_getdevice (void) printk (KERN_ERR PFX "failed to get TCOBASE address\n"); return 0; } - /* - * Check chipset's NO_REBOOT bit - */ + + /* Check chipset's NO_REBOOT bit */ pci_read_config_byte (i8xx_tco_pci, 0xd4, &val1); if (val1 & 0x02) { val1 &= 0xfd; @@ -435,6 +448,10 @@ static unsigned char __init i8xx_tco_getdevice (void) return 0; /* Cannot reset NO_REBOOT bit */ } } + /* Disable reboots untill the watchdog starts */ + val1 |= 0x02; + pci_write_config_byte (i8xx_tco_pci, 0xd4, val1); + /* Set the TCO_EN bit in SMI_EN register */ if (!request_region (SMI_EN + 1, 1, "i8xx TCO")) { printk (KERN_ERR PFX "I/O address 0x%04x already in use\n", @@ -510,17 +527,10 @@ out: static void __exit watchdog_cleanup (void) { - u8 val; - /* Stop the timer before we leave */ if (!nowayout) tco_timer_stop (); - /* Set the NO_REBOOT bit to prevent later reboots, just for sure */ - pci_read_config_byte (i8xx_tco_pci, 0xd4, &val); - val |= 0x02; - pci_write_config_byte (i8xx_tco_pci, 0xd4, val); - /* Deregister */ misc_deregister (&i8xx_tco_miscdev); unregister_reboot_notifier(&i8xx_tco_notifier); diff --git a/drivers/char/watchdog/ib700wdt.c b/drivers/char/watchdog/ib700wdt.c index d974f16e84d..cf60329eec8 100644 --- a/drivers/char/watchdog/ib700wdt.c +++ b/drivers/char/watchdog/ib700wdt.c @@ -117,12 +117,7 @@ static int wd_times[] = { static int wd_margin = WD_TIMO; -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/indydog.c b/drivers/char/watchdog/indydog.c index 6af2c799b57..b4b94daba67 100644 --- a/drivers/char/watchdog/indydog.c +++ b/drivers/char/watchdog/indydog.c @@ -29,14 +29,9 @@ #define PFX "indydog: " static int indydog_alive; -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - #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=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/ixp2000_wdt.c b/drivers/char/watchdog/ixp2000_wdt.c index 4b039516cc8..0cfb9b9c4a4 100644 --- a/drivers/char/watchdog/ixp2000_wdt.c +++ b/drivers/char/watchdog/ixp2000_wdt.c @@ -30,11 +30,7 @@ #include <asm/hardware.h> #include <asm/uaccess.h> -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif +static int nowayout = WATCHDOG_NOWAYOUT; static unsigned int heartbeat = 60; /* (secs) Default is 1 minute */ static unsigned long wdt_status; @@ -186,7 +182,7 @@ static struct file_operations ixp2000_wdt_fops = static struct miscdevice ixp2000_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = "IXP2000 Watchdog", + .name = "watchdog", .fops = &ixp2000_wdt_fops, }; diff --git a/drivers/char/watchdog/ixp4xx_wdt.c b/drivers/char/watchdog/ixp4xx_wdt.c index 83df369113a..b5be8b11104 100644 --- a/drivers/char/watchdog/ixp4xx_wdt.c +++ b/drivers/char/watchdog/ixp4xx_wdt.c @@ -27,11 +27,7 @@ #include <asm/hardware.h> #include <asm/uaccess.h> -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif +static int nowayout = WATCHDOG_NOWAYOUT; static int heartbeat = 60; /* (secs) Default is 1 minute */ static unsigned long wdt_status; static unsigned long boot_status; @@ -180,7 +176,7 @@ static struct file_operations ixp4xx_wdt_fops = static struct miscdevice ixp4xx_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = "IXP4xx Watchdog", + .name = "watchdog", .fops = &ixp4xx_wdt_fops, }; diff --git a/drivers/char/watchdog/machzwd.c b/drivers/char/watchdog/machzwd.c index 9da395fa779..a9a20aad61e 100644 --- a/drivers/char/watchdog/machzwd.c +++ b/drivers/char/watchdog/machzwd.c @@ -94,12 +94,7 @@ MODULE_DESCRIPTION("MachZ ZF-Logic Watchdog driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/mixcomwd.c b/drivers/char/watchdog/mixcomwd.c index 3143e4a0753..c9b301dccec 100644 --- a/drivers/char/watchdog/mixcomwd.c +++ b/drivers/char/watchdog/mixcomwd.c @@ -62,12 +62,7 @@ static int mixcomwd_timer_alive; static struct timer_list mixcomwd_timer = TIMER_INITIALIZER(NULL, 0, 0); static char expect_close; -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c index 592dca10886..427ad51b7a3 100644 --- a/drivers/char/watchdog/pcwd.c +++ b/drivers/char/watchdog/pcwd.c @@ -146,12 +146,7 @@ static int heartbeat = WATCHDOG_HEARTBEAT; module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<=heartbeat<=7200, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -344,7 +339,7 @@ static int pcwd_get_status(int *status) *status |= WDIOF_OVERHEAT; if (temp_panic) { printk (KERN_INFO PFX "Temperature overheat trip!\n"); - machine_power_off(); + kernel_power_off(); } } } else { @@ -355,7 +350,7 @@ static int pcwd_get_status(int *status) *status |= WDIOF_OVERHEAT; if (temp_panic) { printk (KERN_INFO PFX "Temperature overheat trip!\n"); - machine_power_off(); + kernel_power_off(); } } } diff --git a/drivers/char/watchdog/pcwd_pci.c b/drivers/char/watchdog/pcwd_pci.c index 8ce06662732..2b13afb09c5 100644 --- a/drivers/char/watchdog/pcwd_pci.c +++ b/drivers/char/watchdog/pcwd_pci.c @@ -103,12 +103,7 @@ static int heartbeat = WATCHDOG_HEARTBEAT; module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c index 1127201d73b..092e9b13375 100644 --- a/drivers/char/watchdog/pcwd_usb.c +++ b/drivers/char/watchdog/pcwd_usb.c @@ -79,12 +79,7 @@ static int heartbeat = WATCHDOG_HEARTBEAT; module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c index 1699d2c28ce..8b292bf343c 100644 --- a/drivers/char/watchdog/s3c2410_wdt.c +++ b/drivers/char/watchdog/s3c2410_wdt.c @@ -27,7 +27,10 @@ * Fixed tmr_count / wdt_count confusion * Added configurable debug * - * 11-Jan-2004 BJD Fixed divide-by-2 in timeout code + * 11-Jan-2005 BJD Fixed divide-by-2 in timeout code + * + * 25-Jan-2005 DA Added suspend/resume support + * Replaced reboot notifier with .shutdown method * * 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA */ @@ -40,8 +43,6 @@ #include <linux/miscdevice.h> #include <linux/watchdog.h> #include <linux/fs.h> -#include <linux/notifier.h> -#include <linux/reboot.h> #include <linux/init.h> #include <linux/device.h> #include <linux/interrupt.h> @@ -62,12 +63,7 @@ #define CONFIG_S3C2410_WATCHDOG_ATBOOT (0) #define CONFIG_S3C2410_WATCHDOG_DEFAULT_TIME (15) -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; static int tmr_margin = CONFIG_S3C2410_WATCHDOG_DEFAULT_TIME; static int tmr_atboot = CONFIG_S3C2410_WATCHDOG_ATBOOT; static int soft_noboot = 0; @@ -322,20 +318,6 @@ static int s3c2410wdt_ioctl(struct inode *inode, struct file *file, } } -/* - * Notifier for system down - */ - -static int s3c2410wdt_notify_sys(struct notifier_block *this, unsigned long code, - void *unused) -{ - if(code==SYS_DOWN || code==SYS_HALT) { - /* Turn the WDT off */ - s3c2410wdt_stop(); - } - return NOTIFY_DONE; -} - /* kernel interface */ static struct file_operations s3c2410wdt_fops = { @@ -353,10 +335,6 @@ static struct miscdevice s3c2410wdt_miscdev = { .fops = &s3c2410wdt_fops, }; -static struct notifier_block s3c2410wdt_notifier = { - .notifier_call = s3c2410wdt_notify_sys, -}; - /* interrupt handler code */ static irqreturn_t s3c2410wdt_irq(int irqno, void *param, @@ -437,18 +415,10 @@ static int s3c2410wdt_probe(struct device *dev) } } - ret = register_reboot_notifier(&s3c2410wdt_notifier); - if (ret) { - printk (KERN_ERR PFX "cannot register reboot notifier (%d)\n", - ret); - return ret; - } - ret = misc_register(&s3c2410wdt_miscdev); if (ret) { printk (KERN_ERR PFX "cannot register miscdev on minor=%d (%d)\n", WATCHDOG_MINOR, ret); - unregister_reboot_notifier(&s3c2410wdt_notifier); return ret; } @@ -484,15 +454,63 @@ static int s3c2410wdt_remove(struct device *dev) return 0; } +static void s3c2410wdt_shutdown(struct device *dev) +{ + s3c2410wdt_stop(); +} + +#ifdef CONFIG_PM + +static unsigned long wtcon_save; +static unsigned long wtdat_save; + +static int s3c2410wdt_suspend(struct device *dev, u32 state, u32 level) +{ + if (level == SUSPEND_POWER_DOWN) { + /* Save watchdog state, and turn it off. */ + wtcon_save = readl(wdt_base + S3C2410_WTCON); + wtdat_save = readl(wdt_base + S3C2410_WTDAT); + + /* Note that WTCNT doesn't need to be saved. */ + s3c2410wdt_stop(); + } + + return 0; +} + +static int s3c2410wdt_resume(struct device *dev, u32 level) +{ + if (level == RESUME_POWER_ON) { + /* Restore watchdog state. */ + + writel(wtdat_save, wdt_base + S3C2410_WTDAT); + writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */ + writel(wtcon_save, wdt_base + S3C2410_WTCON); + + printk(KERN_INFO PFX "watchdog %sabled\n", + (wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis"); + } + + return 0; +} + +#else +#define s3c2410wdt_suspend NULL +#define s3c2410wdt_resume NULL +#endif /* CONFIG_PM */ + + static struct device_driver s3c2410wdt_driver = { .name = "s3c2410-wdt", .bus = &platform_bus_type, .probe = s3c2410wdt_probe, .remove = s3c2410wdt_remove, + .shutdown = s3c2410wdt_shutdown, + .suspend = s3c2410wdt_suspend, + .resume = s3c2410wdt_resume, }; - static char banner[] __initdata = KERN_INFO "S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics\n"; static int __init watchdog_init(void) @@ -504,13 +522,13 @@ static int __init watchdog_init(void) static void __exit watchdog_exit(void) { driver_unregister(&s3c2410wdt_driver); - unregister_reboot_notifier(&s3c2410wdt_notifier); } module_init(watchdog_init); module_exit(watchdog_exit); -MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); +MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>, " + "Dimitry Andric <dimitry.andric@tomtom.com>"); MODULE_DESCRIPTION("S3C2410 Watchdog Device Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff --git a/drivers/char/watchdog/sa1100_wdt.c b/drivers/char/watchdog/sa1100_wdt.c index 34e8f7b15e3..fb88b4041dc 100644 --- a/drivers/char/watchdog/sa1100_wdt.c +++ b/drivers/char/watchdog/sa1100_wdt.c @@ -36,17 +36,10 @@ #include <asm/uaccess.h> #define OSCR_FREQ CLOCK_TICK_RATE -#define SA1100_CLOSE_MAGIC (0x5afc4453) static unsigned long sa1100wdt_users; -static int expect_close; static int pre_margin; static int boot_status; -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif /* * Allow only one person to hold it open @@ -66,55 +59,33 @@ static int sa1100dog_open(struct inode *inode, struct file *file) } /* - * Shut off the timer. - * Lock it in if it's a module and we defined ...NOWAYOUT - * Oddly, the watchdog can only be enabled, but we can turn off - * the interrupt, which appears to prevent the watchdog timing out. + * The watchdog cannot be disabled. + * + * Previous comments suggested that turning off the interrupt by + * clearing OIER[E3] would prevent the watchdog timing out but this + * does not appear to be true (at least on the PXA255). */ static int sa1100dog_release(struct inode *inode, struct file *file) { - OSMR3 = OSCR + pre_margin; - - if (expect_close == SA1100_CLOSE_MAGIC) { - OIER &= ~OIER_E3; - } else { - printk(KERN_CRIT "WATCHDOG: WDT device closed unexpectedly. WDT will not stop!\n"); - } + printk(KERN_CRIT "WATCHDOG: Device closed - timer will not stop\n"); clear_bit(1, &sa1100wdt_users); - expect_close = 0; return 0; } static ssize_t sa1100dog_write(struct file *file, const char *data, size_t len, loff_t *ppos) { - if (len) { - if (!nowayout) { - size_t i; - - expect_close = 0; - - for (i = 0; i != len; i++) { - char c; - - if (get_user(c, data + i)) - return -EFAULT; - if (c == 'V') - expect_close = SA1100_CLOSE_MAGIC; - } - } + if (len) /* Refresh OSMR3 timer. */ OSMR3 = OSCR + pre_margin; - } return len; } static struct watchdog_info ident = { - .options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE | - WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, - .identity = "SA1100 Watchdog", + .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, + .identity = "SA1100/PXA255 Watchdog", }; static int sa1100dog_ioctl(struct inode *inode, struct file *file, @@ -176,7 +147,7 @@ static struct file_operations sa1100dog_fops = static struct miscdevice sa1100dog_miscdev = { .minor = WATCHDOG_MINOR, - .name = "SA1100/PXA2xx watchdog", + .name = "watchdog", .fops = &sa1100dog_fops, }; @@ -198,7 +169,6 @@ static int __init sa1100dog_init(void) if (ret == 0) printk("SA1100/PXA2xx Watchdog Timer: timer margin %d sec\n", margin); - return ret; } @@ -216,8 +186,5 @@ MODULE_DESCRIPTION("SA1100/PXA2xx Watchdog"); module_param(margin, int, 0); MODULE_PARM_DESC(margin, "Watchdog margin in seconds (default 60s)"); -module_param(nowayout, int, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"); - MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff --git a/drivers/char/watchdog/sbc60xxwdt.c b/drivers/char/watchdog/sbc60xxwdt.c index d7de9880605..ed0bd55fbfc 100644 --- a/drivers/char/watchdog/sbc60xxwdt.c +++ b/drivers/char/watchdog/sbc60xxwdt.c @@ -98,12 +98,7 @@ static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ t module_param(timeout, int, 0); MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/sc1200wdt.c b/drivers/char/watchdog/sc1200wdt.c index 24401e84729..515ce757204 100644 --- a/drivers/char/watchdog/sc1200wdt.c +++ b/drivers/char/watchdog/sc1200wdt.c @@ -91,12 +91,7 @@ MODULE_PARM_DESC(io, "io port"); module_param(timeout, int, 0); MODULE_PARM_DESC(timeout, "range is 0-255 minutes, default is 1"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/sc520_wdt.c b/drivers/char/watchdog/sc520_wdt.c index f6d143e1900..72501be79b0 100644 --- a/drivers/char/watchdog/sc520_wdt.c +++ b/drivers/char/watchdog/sc520_wdt.c @@ -94,12 +94,7 @@ static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ t module_param(timeout, int, 0); MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/scx200_wdt.c b/drivers/char/watchdog/scx200_wdt.c index b569670e4ed..b4a102a2d7e 100644 --- a/drivers/char/watchdog/scx200_wdt.c +++ b/drivers/char/watchdog/scx200_wdt.c @@ -39,15 +39,11 @@ MODULE_DESCRIPTION("NatSemi SCx200 Watchdog Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); -#ifndef CONFIG_WATCHDOG_NOWAYOUT -#define CONFIG_WATCHDOG_NOWAYOUT 0 -#endif - static int margin = 60; /* in seconds */ module_param(margin, int, 0); MODULE_PARM_DESC(margin, "Watchdog margin in seconds"); -static int nowayout = CONFIG_WATCHDOG_NOWAYOUT; +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close"); @@ -210,7 +206,7 @@ static struct file_operations scx200_wdt_fops = { static struct miscdevice scx200_wdt_miscdev = { .minor = WATCHDOG_MINOR, - .name = NAME, + .name = "watchdog", .fops = &scx200_wdt_fops, }; diff --git a/drivers/char/watchdog/shwdt.c b/drivers/char/watchdog/shwdt.c index 3bc9272a474..1f4cab55b2e 100644 --- a/drivers/char/watchdog/shwdt.c +++ b/drivers/char/watchdog/shwdt.c @@ -75,11 +75,7 @@ static unsigned long next_heartbeat; #define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */ static int heartbeat = WATCHDOG_HEARTBEAT; /* in seconds */ -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif +static int nowayout = WATCHDOG_NOWAYOUT; /** * sh_wdt_start - Start the Watchdog diff --git a/drivers/char/watchdog/softdog.c b/drivers/char/watchdog/softdog.c index 117903498a0..20e5eb8667f 100644 --- a/drivers/char/watchdog/softdog.c +++ b/drivers/char/watchdog/softdog.c @@ -56,12 +56,7 @@ 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) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -82,7 +77,7 @@ static void watchdog_fire(unsigned long); static struct timer_list watchdog_ticktock = TIMER_INITIALIZER(watchdog_fire, 0, 0); -static unsigned long timer_alive; +static unsigned long driver_open, orphan_timer; static char expect_close; @@ -92,12 +87,15 @@ static char expect_close; static void watchdog_fire(unsigned long data) { + if (test_and_clear_bit(0, &orphan_timer)) + module_put(THIS_MODULE); + if (soft_noboot) printk(KERN_CRIT PFX "Triggered - Reboot ignored.\n"); else { printk(KERN_CRIT PFX "Initiating system reboot.\n"); - machine_restart(NULL); + emergency_restart(); printk(KERN_CRIT PFX "Reboot didn't ?????\n"); } } @@ -133,9 +131,9 @@ static int softdog_set_heartbeat(int t) static int softdog_open(struct inode *inode, struct file *file) { - if(test_and_set_bit(0, &timer_alive)) + if (test_and_set_bit(0, &driver_open)) return -EBUSY; - if (nowayout) + if (!test_and_clear_bit(0, &orphan_timer)) __module_get(THIS_MODULE); /* * Activate timer @@ -152,11 +150,13 @@ static int softdog_release(struct inode *inode, struct file *file) */ if (expect_close == 42) { softdog_stop(); + module_put(THIS_MODULE); } else { printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n"); + set_bit(0, &orphan_timer); softdog_keepalive(); } - clear_bit(0, &timer_alive); + clear_bit(0, &driver_open); expect_close = 0; return 0; } diff --git a/drivers/char/watchdog/w83627hf_wdt.c b/drivers/char/watchdog/w83627hf_wdt.c index 813c97038f8..b5d82101542 100644 --- a/drivers/char/watchdog/w83627hf_wdt.c +++ b/drivers/char/watchdog/w83627hf_wdt.c @@ -54,12 +54,7 @@ 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) "."); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -98,6 +93,12 @@ w83627hf_init(void) w83627hf_select_wd_register(); + outb_p(0xF6, WDT_EFER); /* Select 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); + 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 */ diff --git a/drivers/char/watchdog/w83877f_wdt.c b/drivers/char/watchdog/w83877f_wdt.c index bccbd4d6ac2..52a8bd0a598 100644 --- a/drivers/char/watchdog/w83877f_wdt.c +++ b/drivers/char/watchdog/w83877f_wdt.c @@ -85,12 +85,7 @@ module_param(timeout, int, 0); MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/wafer5823wdt.c b/drivers/char/watchdog/wafer5823wdt.c index abb0bea45c0..7cf6c9bbf48 100644 --- a/drivers/char/watchdog/wafer5823wdt.c +++ b/drivers/char/watchdog/wafer5823wdt.c @@ -63,12 +63,7 @@ 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) "."); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/wdt.c b/drivers/char/watchdog/wdt.c index 5684aa37988..ec7e401228e 100644 --- a/drivers/char/watchdog/wdt.c +++ b/drivers/char/watchdog/wdt.c @@ -63,12 +63,7 @@ static int wd_heartbeat; module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WD_TIMO) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -266,7 +261,7 @@ static irqreturn_t wdt_interrupt(int irq, void *dev_id, struct pt_regs *regs) printk(KERN_CRIT "Would Reboot.\n"); #else printk(KERN_CRIT "Initiating system reboot.\n"); - machine_restart(NULL); + emergency_restart(); #endif #else printk(KERN_CRIT "Reset in 5ms.\n"); diff --git a/drivers/char/watchdog/wdt977.c b/drivers/char/watchdog/wdt977.c index 072e9b21475..44d49dfacbb 100644 --- a/drivers/char/watchdog/wdt977.c +++ b/drivers/char/watchdog/wdt977.c @@ -53,12 +53,7 @@ MODULE_PARM_DESC(timeout,"Watchdog timeout in seconds (60..15300), default=" __M module_param(testmode, int, 0); MODULE_PARM_DESC(testmode,"Watchdog testmode (1 = no reboot), default=0"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); diff --git a/drivers/char/watchdog/wdt_pci.c b/drivers/char/watchdog/wdt_pci.c index 7651deda928..4b3311993d4 100644 --- a/drivers/char/watchdog/wdt_pci.c +++ b/drivers/char/watchdog/wdt_pci.c @@ -89,12 +89,7 @@ static int wd_heartbeat; module_param(heartbeat, int, 0); MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536, default=" __MODULE_STRING(WD_TIMO) ")"); -#ifdef CONFIG_WATCHDOG_NOWAYOUT -static int nowayout = 1; -#else -static int nowayout = 0; -#endif - +static int nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, int, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); @@ -311,7 +306,7 @@ static irqreturn_t wdtpci_interrupt(int irq, void *dev_id, struct pt_regs *regs) printk(KERN_CRIT PFX "Would Reboot.\n"); #else printk(KERN_CRIT PFX "Initiating system reboot.\n"); - machine_restart(NULL); + emergency_restart(NULL); #endif #else printk(KERN_CRIT PFX "Reset in 5ms.\n"); |