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[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
This commit is contained in:
rhk
parent
91fda1c4e6
commit
22a8394293
@ -29,7 +29,7 @@
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# POWERPC Architecture
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--- /dev/null
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+++ b/drivers/watchdog/bcm63xx_wdt.c
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@@ -0,0 +1,334 @@
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@@ -0,0 +1,354 @@
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+/*
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+ * Broadcom BCM63xx SoC watchdog driver
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+ *
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@ -56,12 +56,15 @@
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+#include <linux/watchdog.h>
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+#include <linux/timer.h>
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+#include <linux/jiffies.h>
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+#include <linux/interrupt.h>
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+#include <linux/ptrace.h>
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+#include <linux/resource.h>
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+#include <linux/platform_device.h>
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+
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+#include <bcm63xx_cpu.h>
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+#include <bcm63xx_io.h>
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+#include <bcm63xx_regs.h>
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+#include <bcm63xx_timer.h>
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+
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+#define PFX KBUILD_MODNAME
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+
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@ -78,7 +81,6 @@
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+} bcm63xx_wdt_device;
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+
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+static int expect_close;
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+static int timeout;
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+
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+static int wdt_time = WDT_DEFAULT_TIME;
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+static int nowayout = WATCHDOG_NOWAYOUT;
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@ -100,6 +102,13 @@
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+ bcm_writel(WDT_STOP_2, bcm63xx_wdt_device.regs + WDT_CTL_REG);
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+}
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+
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+static void bcm63xx_wdt_isr(void *data)
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+{
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+ struct pt_regs *regs = get_irq_regs();
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+
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+ die(PFX " fire", regs);
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+}
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+
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+static void bcm63xx_timer_tick(unsigned long unused)
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+{
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+ if (!atomic_dec_and_test(&bcm63xx_wdt_device.ticks)) {
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@ -292,6 +301,13 @@
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+ return -ENXIO;
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+ }
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+
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+ ret = bcm63xx_timer_register(TIMER_WDT_ID, bcm63xx_wdt_isr, NULL);
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+ if (ret < 0) {
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+ printk(KERN_ERR PFX
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+ "failed to register wdt timer isr\n");
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+ goto unmap;
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+ }
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+
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+ if (bcm63xx_wdt_settimeout(wdt_time)) {
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+ bcm63xx_wdt_settimeout(WDT_DEFAULT_TIME);
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+ printk(KERN_INFO PFX
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@ -303,22 +319,25 @@
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+ if (ret) {
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+ printk(KERN_ERR PFX
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+ "failed to register reboot_notifier\n");
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+ return ret;
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+ goto unregister_timer;
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+ }
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+
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+ ret = misc_register(&bcm63xx_wdt_miscdev);
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+ if (ret < 0) {
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+ printk(KERN_ERR PFX
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+ "failed to register watchdog device\n");
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+ goto unmap;
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+ goto unregister_reboot_notifier;
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+ }
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+
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+ printk(KERN_INFO PFX " started, timer margin: %d sec\n", WDT_DEFAULT_TIME);
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+
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+ return 0;
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+
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+unmap:
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+unregister_reboot_notifier:
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+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
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+unregister_timer:
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+ bcm63xx_timer_unregister(TIMER_WDT_ID);
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+unmap:
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+ iounmap(bcm63xx_wdt_device.regs);
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+ return ret;
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+}
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@ -333,6 +352,7 @@
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+ iounmap(bcm63xx_wdt_device.regs);
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+
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+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
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+ bcm63xx_timer_unregister(TIMER_WDT_ID);
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+
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+ return 0;
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+}
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@ -29,7 +29,7 @@
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# POWERPC Architecture
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--- /dev/null
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+++ b/drivers/watchdog/bcm63xx_wdt.c
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@@ -0,0 +1,334 @@
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@@ -0,0 +1,354 @@
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+/*
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+ * Broadcom BCM63xx SoC watchdog driver
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+ *
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@ -56,12 +56,15 @@
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+#include <linux/watchdog.h>
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+#include <linux/timer.h>
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+#include <linux/jiffies.h>
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+#include <linux/interrupt.h>
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+#include <linux/ptrace.h>
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+#include <linux/resource.h>
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+#include <linux/platform_device.h>
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+
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+#include <bcm63xx_cpu.h>
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+#include <bcm63xx_io.h>
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+#include <bcm63xx_regs.h>
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+#include <bcm63xx_timer.h>
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+
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+#define PFX KBUILD_MODNAME
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+
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@ -78,7 +81,6 @@
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+} bcm63xx_wdt_device;
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+
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+static int expect_close;
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+static int timeout;
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+
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+static int wdt_time = WDT_DEFAULT_TIME;
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+static int nowayout = WATCHDOG_NOWAYOUT;
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@ -100,6 +102,13 @@
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+ bcm_writel(WDT_STOP_2, bcm63xx_wdt_device.regs + WDT_CTL_REG);
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+}
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+
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+static void bcm63xx_wdt_isr(void *data)
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+{
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+ struct pt_regs *regs = get_irq_regs();
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+
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+ die(PFX " fire", regs);
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+}
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+
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+static void bcm63xx_timer_tick(unsigned long unused)
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+{
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+ if (!atomic_dec_and_test(&bcm63xx_wdt_device.ticks)) {
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@ -292,6 +301,13 @@
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+ return -ENXIO;
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+ }
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+
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+ ret = bcm63xx_timer_register(TIMER_WDT_ID, bcm63xx_wdt_isr, NULL);
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+ if (ret < 0) {
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+ printk(KERN_ERR PFX
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+ "failed to register wdt timer isr\n");
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+ goto unmap;
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+ }
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+
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+ if (bcm63xx_wdt_settimeout(wdt_time)) {
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+ bcm63xx_wdt_settimeout(WDT_DEFAULT_TIME);
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+ printk(KERN_INFO PFX
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@ -303,22 +319,25 @@
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+ if (ret) {
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+ printk(KERN_ERR PFX
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+ "failed to register reboot_notifier\n");
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+ return ret;
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+ goto unregister_timer;
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+ }
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+
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+ ret = misc_register(&bcm63xx_wdt_miscdev);
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+ if (ret < 0) {
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+ printk(KERN_ERR PFX
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+ "failed to register watchdog device\n");
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+ goto unmap;
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+ goto unregister_reboot_notifier;
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+ }
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+
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+ printk(KERN_INFO PFX " started, timer margin: %d sec\n", WDT_DEFAULT_TIME);
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+
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+ return 0;
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+
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+unmap:
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+unregister_reboot_notifier:
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+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
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+unregister_timer:
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+ bcm63xx_timer_unregister(TIMER_WDT_ID);
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+unmap:
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+ iounmap(bcm63xx_wdt_device.regs);
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+ return ret;
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+}
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@ -333,6 +352,7 @@
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+ iounmap(bcm63xx_wdt_device.regs);
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+
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+ unregister_reboot_notifier(&bcm63xx_wdt_notifier);
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+ bcm63xx_timer_unregister(TIMER_WDT_ID);
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+
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+ return 0;
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+}
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