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authorWim Van Sebroeck <wim@iguana.be>2009-01-28 20:51:04 +0000
committerWim Van Sebroeck <wim@iguana.be>2009-02-14 08:49:23 +0000
commit12d60e28bed3f593aac5385acbdbb089eb8ae21e (patch)
tree404fe676e5e3d10c13f5c64dd06b39c85dcf09e3 /drivers/watchdog/iTCO_vendor_support.c
parentd2f8d7ee1a9b4650b4e43325b321801264f7c37a (diff)
downloadlinux-12d60e28bed3f593aac5385acbdbb089eb8ae21e.tar.bz2
[WATCHDOG] iTCO_wdt: fix SMI_EN regression 2
bugzilla: #12363 commit 7cd5b08be3c489df11b559fef210b81133764ad4 added a second regression: some Dell's and Compaq's lockup on boot. So we revert most of the code. The ICH9 reboot issue remains in place and will need some more fixing... :-( Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog/iTCO_vendor_support.c')
-rw-r--r--drivers/watchdog/iTCO_vendor_support.c32
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/watchdog/iTCO_vendor_support.c b/drivers/watchdog/iTCO_vendor_support.c
index 2474ebca88f6..d8264ad0be41 100644
--- a/drivers/watchdog/iTCO_vendor_support.c
+++ b/drivers/watchdog/iTCO_vendor_support.c
@@ -1,7 +1,7 @@
/*
* intel TCO vendor specific watchdog driver support
*
- * (c) Copyright 2006-2008 Wim Van Sebroeck <wim@iguana.be>.
+ * (c) Copyright 2006-2009 Wim Van Sebroeck <wim@iguana.be>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -19,7 +19,7 @@
/* Module and version information */
#define DRV_NAME "iTCO_vendor_support"
-#define DRV_VERSION "1.02"
+#define DRV_VERSION "1.03"
#define PFX DRV_NAME ": "
/* Includes */
@@ -77,6 +77,26 @@ MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default=0 (n
* 20.6 seconds.
*/
+static void supermicro_old_pre_start(unsigned long acpibase)
+{
+ unsigned long val32;
+
+ /* Bit 13: TCO_EN -> 0 = Disables TCO logic generating an SMI# */
+ val32 = inl(SMI_EN);
+ val32 &= 0xffffdfff; /* Turn off SMI clearing watchdog */
+ outl(val32, SMI_EN); /* Needed to activate watchdog */
+}
+
+static void supermicro_old_pre_stop(unsigned long acpibase)
+{
+ unsigned long val32;
+
+ /* Bit 13: TCO_EN -> 1 = Enables the TCO logic to generate SMI# */
+ val32 = inl(SMI_EN);
+ val32 |= 0x00002000; /* Turn on SMI clearing watchdog */
+ outl(val32, SMI_EN); /* Needed to deactivate watchdog */
+}
+
static void supermicro_old_pre_keepalive(unsigned long acpibase)
{
/* Reload TCO Timer (done in iTCO_wdt_keepalive) + */
@@ -228,14 +248,18 @@ static void supermicro_new_pre_set_heartbeat(unsigned int heartbeat)
void iTCO_vendor_pre_start(unsigned long acpibase,
unsigned int heartbeat)
{
- if (vendorsupport == SUPERMICRO_NEW_BOARD)
+ if (vendorsupport == SUPERMICRO_OLD_BOARD)
+ supermicro_old_pre_start(acpibase);
+ else if (vendorsupport == SUPERMICRO_NEW_BOARD)
supermicro_new_pre_start(heartbeat);
}
EXPORT_SYMBOL(iTCO_vendor_pre_start);
void iTCO_vendor_pre_stop(unsigned long acpibase)
{
- if (vendorsupport == SUPERMICRO_NEW_BOARD)
+ if (vendorsupport == SUPERMICRO_OLD_BOARD)
+ supermicro_old_pre_stop(acpibase);
+ else if (vendorsupport == SUPERMICRO_NEW_BOARD)
supermicro_new_pre_stop();
}
EXPORT_SYMBOL(iTCO_vendor_pre_stop);