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authorrhk <rhk@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-04-27 15:45:03 +0000
committerrhk <rhk@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-04-27 15:45:03 +0000
commit22a8394293ccf8fe1fc3212897b13581329924d1 (patch)
treeaea01117a5a9c53df9a492136b46c14de5489c5e /target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch
parent91fda1c4e6b97bfa8824cd95f8fea823d7c70ad6 (diff)
[brcm63xx] extend bcm63xx_wdt driver for debugging purposes, thx Miguel
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21199 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch')
-rw-r--r--target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch30
1 files changed, 25 insertions, 5 deletions
diff --git a/target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch b/target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch
index b4204d8f10..2b3e6c1b4e 100644
--- a/target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch
+++ b/target/linux/brcm63xx/patches-2.6.33/020-watchdog.patch
@@ -29,7 +29,7 @@
# POWERPC Architecture
--- /dev/null
+++ b/drivers/watchdog/bcm63xx_wdt.c
-@@ -0,0 +1,334 @@
+@@ -0,0 +1,354 @@
+/*
+ * Broadcom BCM63xx SoC watchdog driver
+ *
@@ -56,12 +56,15 @@
+#include <linux/watchdog.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
++#include <linux/interrupt.h>
++#include <linux/ptrace.h>
+#include <linux/resource.h>
+#include <linux/platform_device.h>
+
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
++#include <bcm63xx_timer.h>
+
+#define PFX KBUILD_MODNAME
+
@@ -78,7 +81,6 @@
+} bcm63xx_wdt_device;
+
+static int expect_close;
-+static int timeout;
+
+static int wdt_time = WDT_DEFAULT_TIME;
+static int nowayout = WATCHDOG_NOWAYOUT;
@@ -100,6 +102,13 @@
+ bcm_writel(WDT_STOP_2, bcm63xx_wdt_device.regs + WDT_CTL_REG);
+}
+
++static void bcm63xx_wdt_isr(void *data)
++{
++ struct pt_regs *regs = get_irq_regs();
++
++ die(PFX " fire", regs);
++}
++
+static void bcm63xx_timer_tick(unsigned long unused)
+{
+ if (!atomic_dec_and_test(&bcm63xx_wdt_device.ticks)) {
@@ -292,6 +301,13 @@
+ return -ENXIO;
+ }
+
++ ret = bcm63xx_timer_register(TIMER_WDT_ID, bcm63xx_wdt_isr, NULL);
++ if (ret < 0) {
++ printk(KERN_ERR PFX
++ "failed to register wdt timer isr\n");
++ goto unmap;
++ }
++
+ if (bcm63xx_wdt_settimeout(wdt_time)) {
+ bcm63xx_wdt_settimeout(WDT_DEFAULT_TIME);
+ printk(KERN_INFO PFX
@@ -303,22 +319,25 @@
+ if (ret) {
+ printk(KERN_ERR PFX
+ "failed to register reboot_notifier\n");
-+ return ret;
++ goto unregister_timer;
+ }
+
+ ret = misc_register(&bcm63xx_wdt_miscdev);
+ if (ret < 0) {
+ printk(KERN_ERR PFX
+ "failed to register watchdog device\n");
-+ goto unmap;
++ goto unregister_reboot_notifier;
+ }
+
+ printk(KERN_INFO PFX " started, timer margin: %d sec\n", WDT_DEFAULT_TIME);
+
+ return 0;
+
-+unmap:
++unregister_reboot_notifier:
+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
++unregister_timer:
++ bcm63xx_timer_unregister(TIMER_WDT_ID);
++unmap:
+ iounmap(bcm63xx_wdt_device.regs);
+ return ret;
+}
@@ -333,6 +352,7 @@
+ iounmap(bcm63xx_wdt_device.regs);
+
+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
++ bcm63xx_timer_unregister(TIMER_WDT_ID);
+
+ return 0;
+}