[WATCHDOG] Add iTCO vendor specific support

[powerpc.git] / drivers / char / watchdog / iTCO_wdt.c

diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index b6f29cb..7eac922 100644 (file)
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -48,8 +48,8 @@
 
 /* Module and version information */
 #define DRV_NAME        "iTCO_wdt"
-#define DRV_VERSION     "1.00"
-#define DRV_RELDATE     "08-Oct-2006"
+#define DRV_VERSION     "1.01"
+#define DRV_RELDATE     "11-Nov-2006"
 #define PFX            DRV_NAME ": "
 
 /* Includes */
@@ -189,6 +189,21 @@ static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=CONFIG_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
+
 /*
  * Some TCO specific functions
  */
@@ -249,6 +264,8 @@ static int iTCO_wdt_start(void)
 
        spin_lock(&iTCO_wdt_private.io_lock);
 
+       iTCO_vendor_pre_start(iTCO_wdt_private.ACPIBASE, heartbeat);
+
        /* disable chipset's NO_REBOOT bit */
        if (iTCO_wdt_unset_NO_REBOOT_bit()) {
                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)
 
        spin_lock(&iTCO_wdt_private.io_lock);
 
+       iTCO_vendor_pre_stop(iTCO_wdt_private.ACPIBASE);
+
        /* Bit 11: TCO Timer Halt -> 1 = The TCO timer is disabled */
        val = inw(TCO1_CNT);
        val |= 0x0800;
@@ -293,6 +312,8 @@ static int iTCO_wdt_keepalive(void)
 {
        spin_lock(&iTCO_wdt_private.io_lock);
 
+       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) {
                outw(0x01, TCO_RLD);
@@ -319,6 +340,8 @@ static int iTCO_wdt_set_heartbeat(int t)
            ((iTCO_wdt_private.iTCO_version == 1) && (tmrval > 0x03f)))
                return -EINVAL;
 
+       iTCO_vendor_pre_set_heartbeat(tmrval);
+
        /* Write new heartbeat to watchdog */
        if (iTCO_wdt_private.iTCO_version == 2) {
                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,
        }
 
        /* Check chipset's NO_REBOOT bit */
-       if (iTCO_wdt_unset_NO_REBOOT_bit()) {
+       if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) {
                printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
                ret = -ENODEV;  /* Cannot reset NO_REBOOT bit */
                goto out;