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#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/rtpm_prio.h>
#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/uaccess.h>
#include <linux/spinlock.h>
#include <linux/rtpm_prio.h>
#include <linux/rtc.h>
#include <linux/cpu.h>
#include <mach/mt_wdt.h>
/* */
#include <linux/init.h> /* For init/exit macros */
#include <linux/module.h> /* For MODULE_ marcros */
#include <linux/kernel.h>
#include <linux/miscdevice.h>
#include <linux/fs.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/watchdog.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <mach/irqs.h>
#include <mach/mt_reg_base.h>
#include <mach/mt_typedefs.h>
#include <mach/mt_wdt.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/kdev_t.h>
#include <linux/fs.h>
#include <linux/cdev.h>
#include <mach/wd_api.h>
#include <linux/aee.h>
#ifdef CONFIG_LOCAL_WDT
extern int nr_cpu_ids;
#else
#define nr_cpu_ids 4
#endif
/* extern int nr_cpu_ids; */
/* int enable_clock(int id, unsigned char *name); */
static int test_case;
module_param(test_case, int, 00664);
static DEFINE_SPINLOCK(wdt_test_lock0);
static DEFINE_SPINLOCK(wdt_test_lock1);
static struct task_struct *wk_tsk[2]; /* cpu: 2 */
static int data;
static void wdt_dump_reg(void)
{
printk("****************dump wdt reg start*************\n");
printk("MTK_WDT_MODE:0x%x\n", DRV_Reg32(MTK_WDT_MODE));
printk("MTK_WDT_LENGTH:0x%x\n", DRV_Reg32(MTK_WDT_LENGTH));
printk("MTK_WDT_RESTART:0x%x\n", DRV_Reg32(MTK_WDT_RESTART));
printk("MTK_WDT_STATUS:0x%x\n", DRV_Reg32(MTK_WDT_STATUS));
printk("MTK_WDT_INTERVAL:0x%x\n", DRV_Reg32(MTK_WDT_INTERVAL));
printk("MTK_WDT_SWRST:0x%x\n", DRV_Reg32(MTK_WDT_SWRST));
printk("MTK_WDT_NONRST_REG:0x%x\n", DRV_Reg32(MTK_WDT_NONRST_REG));
printk("MTK_WDT_NONRST_REG2:0x%x\n", DRV_Reg32(MTK_WDT_NONRST_REG2));
printk("MTK_WDT_REQ_MODE:0x%x\n", DRV_Reg32(MTK_WDT_REQ_MODE));
printk("MTK_WDT_REQ_IRQ_EN:0x%x\n", DRV_Reg32(MTK_WDT_REQ_IRQ_EN));
printk("MTK_WDT_DRAMC_CTL:0x%x\n", DRV_Reg32(MTK_WDT_DRAMC_CTL));
printk("****************dump wdt reg end*************\n");
}
static int cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
int hotcpu = (unsigned long)hcpu;
switch (action) {
case CPU_UP_PREPARE:
case CPU_UP_PREPARE_FROZEN:
/* watchdog_prepare_cpu(hotcpu); */
break;
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
/* */
if (hotcpu < nr_cpu_ids) {
kthread_bind(wk_tsk[hotcpu], hotcpu);
wake_up_process(wk_tsk[hotcpu]);
printk("[WDK-test]cpu %d plug on ", hotcpu);
}
break;
#ifdef CONFIG_HOTPLUG_CPU
case CPU_UP_CANCELED:
case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
case CPU_DEAD_FROZEN:
printk("[WDK-test]:start Stop CPU:%d\n", hotcpu);
break;
#endif /* CONFIG_HOTPLUG_CPU */
}
/*
* hardlockup and softlockup are not important enough
* to block cpu bring up. Just always succeed and
* rely on printk output to flag problems.
*/
return NOTIFY_OK;
}
static struct notifier_block cpu_nfb = {
.notifier_call = cpu_callback
};
static int kwdt_thread_test(void *arg)
{
struct sched_param param = {.sched_priority = RTPM_PRIO_WDT };
int cpu;
unsigned int flags;
sched_setscheduler(current, SCHED_FIFO, ¶m);
set_current_state(TASK_INTERRUPTIBLE);
for (;;) {
printk("wd_test debug start, cpu:%d\n", cpu);
spin_lock(&wdt_test_lock0);
cpu = smp_processor_id();
spin_unlock(&wdt_test_lock0);
if (test_case == (cpu * 10 + 1)) /* cpu0 Preempt disale */
{
printk("CPU:%d, Preempt disable\n", cpu);
spin_lock(&wdt_test_lock1);
}
if (test_case == (cpu * 10 + 2)) /* cpu0 Preempt&irq disale */
{
printk("CPU:%d, irq & Preempt disable\n", cpu);
spin_lock_irqsave(&wdt_test_lock1, flags);
}
msleep(5 * 1000); /* 5s */
wdt_dump_reg();
printk("wd_test debug end, cpu:%d\n", cpu);
}
return 0;
}
static int start_kicker(void)
{
int i;
unsigned char name[64] = { 0 };
for (i = 0; i < nr_cpu_ids; i++) {
sprintf(name, "wdtk-test-%d", i);
printk("[WDK]:thread name: %s\n", name);
wk_tsk[i] = kthread_create(kwdt_thread_test, &data, name);
if (IS_ERR(wk_tsk[i])) {
int ret = PTR_ERR(wk_tsk[i]);
wk_tsk[i] = NULL;
return ret;
}
kthread_bind(wk_tsk[i], i);
wake_up_process(wk_tsk[i]);
}
return 0;
}
static int __init test_init(void)
{
/* enable_clock(12, "Vfifo"); */
register_cpu_notifier(&cpu_nfb);
start_kicker();
return 0;
}
static void __init test_exit(void)
{
}
module_init(test_init);
module_exit(test_exit);
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