2006-05-30 22:38:38 +03:00
|
|
|
diff -Nur linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c
|
|
|
|
--- linux-2.6.15.1/drivers/char/watchdog/wdt_merlot.c 2006-01-26 21:14:02.204626250 -0800
|
|
|
|
+++ linux-2.6.15.1-openwrt/drivers/char/watchdog/wdt_merlot.c 2006-02-02 20:31:43.000000000 -0800
|
|
|
|
@@ -0,0 +1,110 @@
|
2006-12-14 18:41:33 +02:00
|
|
|
+#include <linux/autoconf.h>
|
2006-05-30 22:38:38 +03:00
|
|
|
+#include <linux/module.h>
|
|
|
|
+#include <linux/types.h>
|
|
|
|
+#include <linux/miscdevice.h>
|
|
|
|
+#include <linux/watchdog.h>
|
|
|
|
+#include <linux/fs.h>
|
|
|
|
+
|
|
|
|
+#include <asm/io.h>
|
|
|
|
+#include <asm/uaccess.h>
|
|
|
|
+#include <asm/system.h>
|
|
|
|
+#include <asm/bootinfo.h>
|
|
|
|
+
|
|
|
|
+extern unsigned long mips_machtype;
|
|
|
|
+
|
|
|
|
+static unsigned long wdt_is_open;
|
|
|
|
+static struct timer_list wdt_timer;
|
|
|
|
+
|
|
|
|
+static void wdt_merlot_refresh(void)
|
|
|
|
+{
|
|
|
|
+ volatile __u32 *wdt;
|
|
|
|
+ switch (mips_machtype) {
|
|
|
|
+ case MACH_ARUBA_AP70:
|
|
|
|
+ wdt = (__u32 *) 0xb8030034;
|
|
|
|
+ *wdt = 0x10000000;
|
|
|
|
+ break;
|
|
|
|
+ default:
|
|
|
|
+ wdt = (__u32 *) 0xbc00300c;
|
|
|
|
+ *wdt = 0x40000000;
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static void wdt_merlot_timer_fn(unsigned long data)
|
|
|
|
+{
|
|
|
|
+ wdt_merlot_refresh();
|
|
|
|
+ if (!test_bit(1, &wdt_is_open))
|
|
|
|
+ mod_timer(&wdt_timer, jiffies + HZ);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int wdt_merlot_setup_timer(void)
|
|
|
|
+{
|
|
|
|
+
|
|
|
|
+ init_timer(&wdt_timer);
|
|
|
|
+ wdt_timer.function = wdt_merlot_timer_fn;
|
|
|
|
+ wdt_timer.data = 0;
|
|
|
|
+ wdt_timer.expires = jiffies + HZ;
|
|
|
|
+ add_timer(&wdt_timer);
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int wdt_open(struct inode *inode, struct file *file)
|
|
|
|
+{
|
|
|
|
+ if (test_and_set_bit(0, &wdt_is_open))
|
|
|
|
+ return -EBUSY;
|
|
|
|
+ set_bit(1, &wdt_is_open);
|
|
|
|
+ return nonseekable_open(inode, file);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static ssize_t wdt_write(struct file *file, const char __user * buf, size_t count, loff_t * ppos)
|
|
|
|
+{
|
|
|
|
+ if (count) /* something was written */
|
|
|
|
+ wdt_merlot_refresh();
|
|
|
|
+ return count;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int wdt_release(struct inode *inode, struct file *file)
|
|
|
|
+{
|
|
|
|
+ clear_bit(0, &wdt_is_open);
|
|
|
|
+ return 0;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static struct file_operations wdt_fops = {
|
|
|
|
+ .owner = THIS_MODULE,
|
|
|
|
+ .llseek = no_llseek,
|
|
|
|
+ .write = wdt_write,
|
|
|
|
+ .open = wdt_open,
|
|
|
|
+ .release = wdt_release,
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static struct miscdevice wdt_miscdev = {
|
|
|
|
+ .minor = WATCHDOG_MINOR,
|
|
|
|
+ .name = "watchdog",
|
|
|
|
+ .fops = &wdt_fops,
|
|
|
|
+};
|
|
|
|
+
|
|
|
|
+static void __exit wdt_exit(void)
|
|
|
|
+{
|
|
|
|
+ misc_deregister(&wdt_miscdev);
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+static int __init wdt_init(void)
|
|
|
|
+{
|
|
|
|
+ int ret;
|
|
|
|
+ ret = misc_register(&wdt_miscdev);
|
|
|
|
+ if (ret) {
|
|
|
|
+ printk(KERN_ERR
|
|
|
|
+ "wdt: cannot register miscdev on minor=%d (err=%d)\n",
|
|
|
|
+ WATCHDOG_MINOR, ret);
|
|
|
|
+ misc_deregister(&wdt_miscdev);
|
|
|
|
+ goto out;
|
|
|
|
+ }
|
|
|
|
+ printk("wdt: registered with refresh\n");
|
|
|
|
+ wdt_merlot_refresh();
|
|
|
|
+ wdt_merlot_setup_timer();
|
|
|
|
+ out:
|
|
|
|
+ return ret;
|
|
|
|
+}
|
|
|
|
+
|
|
|
|
+module_init(wdt_init);
|
|
|
|
+module_exit(wdt_exit);
|
|
|
|
diff -Nur linux-2.6.15.3/drivers/char/watchdog/Makefile linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile
|
|
|
|
--- linux-2.6.15.3/drivers/char/watchdog/Makefile 2006-02-22 10:04:18.596278000 -0800
|
|
|
|
+++ linux-2.6.15.3-openwrt/drivers/char/watchdog/Makefile 2006-02-22 10:06:21.400960000 -0800
|
|
|
|
@@ -71,5 +71,8 @@
|
|
|
|
|
|
|
|
# SPARC64 Architecture
|
|
|
|
|
|
|
|
+# Aruba Architecture
|
|
|
|
+obj-$(CONFIG_MACH_ARUBA) += wdt_merlot.o
|
|
|
|
+
|
|
|
|
# Architecture Independant
|
|
|
|
obj-$(CONFIG_SOFT_WATCHDOG) += softdog.o
|