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path: root/drivers/char/watchdog/iTCO_wdt.c
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Diffstat (limited to 'drivers/char/watchdog/iTCO_wdt.c')
-rw-r--r--drivers/char/watchdog/iTCO_wdt.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index b6f29cb8bd39..7eac922df867 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -48,8 +48,8 @@
48 48
49/* Module and version information */ 49/* Module and version information */
50#define DRV_NAME "iTCO_wdt" 50#define DRV_NAME "iTCO_wdt"
51#define DRV_VERSION "1.00" 51#define DRV_VERSION "1.01"
52#define DRV_RELDATE "08-Oct-2006" 52#define DRV_RELDATE "11-Nov-2006"
53#define PFX DRV_NAME ": " 53#define PFX DRV_NAME ": "
54 54
55/* Includes */ 55/* Includes */
@@ -189,6 +189,21 @@ static int nowayout = WATCHDOG_NOWAYOUT;
189module_param(nowayout, int, 0); 189module_param(nowayout, int, 0);
190MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"); 190MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)");
191 191
192/* iTCO Vendor Specific Support hooks */
193#ifdef CONFIG_ITCO_VENDOR_SUPPORT
194extern void iTCO_vendor_pre_start(unsigned long, unsigned int);
195extern void iTCO_vendor_pre_stop(unsigned long);
196extern void iTCO_vendor_pre_keepalive(unsigned long, unsigned int);
197extern void iTCO_vendor_pre_set_heartbeat(unsigned int);
198extern int iTCO_vendor_check_noreboot_on(void);
199#else
200#define iTCO_vendor_pre_start(acpibase, heartbeat) {}
201#define iTCO_vendor_pre_stop(acpibase) {}
202#define iTCO_vendor_pre_keepalive(acpibase,heartbeat) {}
203#define iTCO_vendor_pre_set_heartbeat(heartbeat) {}
204#define iTCO_vendor_check_noreboot_on() 1 /* 1=check noreboot; 0=don't check */
205#endif
206
192/* 207/*
193 * Some TCO specific functions 208 * Some TCO specific functions
194 */ 209 */
@@ -249,6 +264,8 @@ static int iTCO_wdt_start(void)
249 264
250 spin_lock(&iTCO_wdt_private.io_lock); 265 spin_lock(&iTCO_wdt_private.io_lock);
251 266
267 iTCO_vendor_pre_start(iTCO_wdt_private.ACPIBASE, heartbeat);
268
252 /* disable chipset's NO_REBOOT bit */ 269 /* disable chipset's NO_REBOOT bit */
253 if (iTCO_wdt_unset_NO_REBOOT_bit()) { 270 if (iTCO_wdt_unset_NO_REBOOT_bit()) {
254 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n"); 271 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
@@ -273,6 +290,8 @@ static int iTCO_wdt_stop(void)
273 290
274 spin_lock(&iTCO_wdt_private.io_lock); 291 spin_lock(&iTCO_wdt_private.io_lock);
275 292
293 iTCO_vendor_pre_stop(iTCO_wdt_private.ACPIBASE);
294
276 /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */ 295 /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */
277 val = inw(TCO1_CNT); 296 val = inw(TCO1_CNT);
278 val |= 0x0800; 297 val |= 0x0800;
@@ -293,6 +312,8 @@ static int iTCO_wdt_keepalive(void)
293{ 312{
294 spin_lock(&iTCO_wdt_private.io_lock); 313 spin_lock(&iTCO_wdt_private.io_lock);
295 314
315 iTCO_vendor_pre_keepalive(iTCO_wdt_private.ACPIBASE, heartbeat);
316
296 /* Reload the timer by writing to the TCO Timer Counter register */ 317 /* Reload the timer by writing to the TCO Timer Counter register */
297 if (iTCO_wdt_private.iTCO_version == 2) { 318 if (iTCO_wdt_private.iTCO_version == 2) {
298 outw(0x01, TCO_RLD); 319 outw(0x01, TCO_RLD);
@@ -319,6 +340,8 @@ static int iTCO_wdt_set_heartbeat(int t)
319 ((iTCO_wdt_private.iTCO_version == 1) && (tmrval > 0x03f))) 340 ((iTCO_wdt_private.iTCO_version == 1) && (tmrval > 0x03f)))
320 return -EINVAL; 341 return -EINVAL;
321 342
343 iTCO_vendor_pre_set_heartbeat(tmrval);
344
322 /* Write new heartbeat to watchdog */ 345 /* Write new heartbeat to watchdog */
323 if (iTCO_wdt_private.iTCO_version == 2) { 346 if (iTCO_wdt_private.iTCO_version == 2) {
324 spin_lock(&iTCO_wdt_private.io_lock); 347 spin_lock(&iTCO_wdt_private.io_lock);
@@ -569,7 +592,7 @@ static int iTCO_wdt_init(struct pci_dev *pdev, const struct pci_device_id *ent,
569 } 592 }
570 593
571 /* Check chipset's NO_REBOOT bit */ 594 /* Check chipset's NO_REBOOT bit */
572 if (iTCO_wdt_unset_NO_REBOOT_bit()) { 595 if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) {
573 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n"); 596 printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
574 ret = -ENODEV; /* Cannot reset NO_REBOOT bit */ 597 ret = -ENODEV; /* Cannot reset NO_REBOOT bit */
575 goto out; 598 goto out;