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/*
* sprd_debug.c
*
*/
#include <linux/errno.h>
#include <linux/ctype.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/sysrq.h>
//#include <mach/regs-pmu.h>
/* FIXME: This is temporary solution come from Midas */
#ifndef CONFIG_64BIT
#include <asm/outercache.h>
#endif
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/proc_fs.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/swiotlb.h>
#include <soc/sprd/pm_debug.h>
#include <soc/sprd/sprd_persistent_clock.h>
#include <soc/sprd/hardware.h>
#include <soc/sprd/system.h>
#include <soc/sprd/sprd_debug.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/regs_debug.h>
#define MY_DEBUG 0
struct sprd_debug_regs_access *sprd_debug_last_regs_access;
EXPORT_SYMBOL(sprd_debug_last_regs_access);
/* enable/disable sprd_debug feature
* level = 0 when enable = 0 && enable_user = 0
* level = 1 when enable = 1 && enable_user = 0
* level = 0x10001 when enable = 1 && enable_user = 1
* The other cases are not considered
*/
union sprd_debug_level_t sprd_debug_level = { .en.kernel_fault = 1, };
module_param_named(enable, sprd_debug_level.en.kernel_fault, ushort, 0644);
module_param_named(enable_user, sprd_debug_level.en.user_fault, ushort, 0644);
module_param_named(level, sprd_debug_level.uint_val, uint, 0644);
static const char *gkernel_sprd_build_info_date_time[] = {
__DATE__,
__TIME__
};
static char gkernel_sprd_build_info[100];
/* klaatu - schedule log */
#ifdef CONFIG_SPRD_DEBUG_SCHED_LOG
static struct sched_log sprd_debug_log __cacheline_aligned;
static atomic_t task_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
static atomic_t irq_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
static atomic_t work_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
static atomic_t hrtimer_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
struct sched_log (*psprd_debug_log) = (&sprd_debug_log);
#endif
void sprd_debug_save_pte(void *pte, int task_addr)
{
// memcpy(&per_cpu(sprd_debug_fault_status,smp_processor_id()), pte,sizeof(struct sprd_debug_fault_status_t));
// per_cpu(sprd_debug_fault_status,smp_processor_id()).cur_process_magic =task_addr;
}
void sprd_debug_check_crash_key(unsigned int code, int value)
{
static bool volup_p;
static bool voldown_p;
static int loopcount;
if (!sprd_debug_level.en.kernel_fault)
return;
#if 0
/* Must be deleted later */
pr_info("Test %s:key code(%d) value(%d),(up:%d,down:%d)\n", __func__, code, value, volup_p, voldown_p);
#endif
/* Enter Force Upload
* Hold volume down key first
* and then press power key twice
* and volume up key should not be pressed
*/
if (value) {
if (code == KEY_VOLUMEUP)
volup_p = true;
if (code == KEY_VOLUMEDOWN)
voldown_p = true;
if (volup_p && voldown_p) {
static unsigned long stack_dump_jiffies = 0;
if (!stack_dump_jiffies || jiffies > stack_dump_jiffies + HZ * 10) {
pr_info("trigger sysrq w & m\n");
/* show blocked thread */
handle_sysrq('w');
/* show memory */
handle_sysrq('m');
stack_dump_jiffies = jiffies;
}
if (code == KEY_POWER) {
pr_info("%s: Crash key count : %d\n", __func__, ++loopcount);
if (loopcount == 2)
panic("Crash Key");
}
}
} else {
if (code == KEY_VOLUMEUP)
volup_p = false;
if (code == KEY_VOLUMEDOWN) {
loopcount = 0;
voldown_p = false;
}
}
}
static void sprd_debug_set_build_info(void)
{
char *p = gkernel_sprd_build_info;
sprintf(p, "Kernel Build Info : ");
strcat(p, " Date:");
strncat(p, gkernel_sprd_build_info_date_time[0], 12);
strcat(p, " Time:");
strncat(p, gkernel_sprd_build_info_date_time[1], 9);
}
__init int sprd_debug_init(void)
{
dma_addr_t addr;
if (!sprd_debug_level.en.kernel_fault)
return -1;
sprd_debug_set_build_info();
#ifndef CONFIG_64BIT
sprd_debug_last_regs_access = (struct sprd_debug_regs_access*)dma_alloc_coherent(
NULL, sizeof(struct sprd_debug_regs_access)*NR_CPUS, &addr, GFP_KERNEL);
#else
sprd_debug_last_regs_access = (struct sprd_debug_regs_access*)swiotlb_alloc_coherent(
NULL, sizeof(struct sprd_debug_regs_access)*NR_CPUS, &addr, GFP_KERNEL);
#endif
printk("*** %s, size:%u, sprd_debug_last_regs_access:%p *** \n",
__func__, sizeof(struct sprd_debug_regs_access)*NR_CPUS, sprd_debug_last_regs_access);
return 0;
}
subsys_initcall(sprd_debug_init);
int get_sprd_debug_level(void)
{
return sprd_debug_level.uint_val;
}
/* klaatu - schedule log */
#ifdef CONFIG_SPRD_DEBUG_SCHED_LOG
void __sprd_debug_task_log(int cpu, struct task_struct *task)
{
unsigned i;
i = atomic_inc_return(&task_log_idx[cpu]) &
(ARRAY_SIZE(psprd_debug_log->task[0]) - 1);
psprd_debug_log->task[cpu][i].time = cpu_clock(cpu);
#ifdef CP_DEBUG
psprd_debug_log->task[cpu][i].sys_cnt = get_sys_cnt();
#endif
strcpy(psprd_debug_log->task[cpu][i].comm, task->comm);
psprd_debug_log->task[cpu][i].pid = task->pid;
}
void __sprd_debug_irq_log(unsigned int irq, void *fn, int en)
{
int cpu = raw_smp_processor_id();
unsigned i;
i = atomic_inc_return(&irq_log_idx[cpu]) &
(ARRAY_SIZE(psprd_debug_log->irq[0]) - 1);
psprd_debug_log->irq[cpu][i].time = cpu_clock(cpu);
#ifdef CP_DEBUG
psprd_debug_log->irq[cpu][i].sys_cnt = get_sys_cnt();
#endif
psprd_debug_log->irq[cpu][i].irq = irq;
psprd_debug_log->irq[cpu][i].fn = (void *)fn;
psprd_debug_log->irq[cpu][i].en = en;
}
void __sprd_debug_work_log(struct worker *worker,
struct work_struct *work, work_func_t f)
{
int cpu = raw_smp_processor_id();
unsigned i;
i = atomic_inc_return(&work_log_idx[cpu]) &
(ARRAY_SIZE(psprd_debug_log->work[0]) - 1);
psprd_debug_log->work[cpu][i].time = cpu_clock(cpu);
#ifdef CP_DEBUG
psprd_debug_log->work[cpu][i].sys_cnt = get_sys_cnt();
#endif
psprd_debug_log->work[cpu][i].worker = worker;
psprd_debug_log->work[cpu][i].work = work;
psprd_debug_log->work[cpu][i].f = f;
}
void __sprd_debug_hrtimer_log(struct hrtimer *timer,
enum hrtimer_restart (*fn) (struct hrtimer *), int en)
{
int cpu = raw_smp_processor_id();
unsigned i;
i = atomic_inc_return(&hrtimer_log_idx[cpu]) &
(ARRAY_SIZE(psprd_debug_log->hrtimers[0]) - 1);
psprd_debug_log->hrtimers[cpu][i].time = cpu_clock(cpu);
#ifdef CP_DEBUG
psprd_debug_log->hrtimers[cpu][i].sys_cnt = get_sys_cnt();
#endif
psprd_debug_log->hrtimers[cpu][i].timer = timer;
psprd_debug_log->hrtimers[cpu][i].fn = fn;
psprd_debug_log->hrtimers[cpu][i].en = en;
}
int get_task_log_idx(int cpu)
{
return atomic_inc_return(&task_log_idx[cpu]) & (ARRAY_SIZE(psprd_debug_log->task[0]) - 1);
}
int get_irq_log_idx(int cpu)
{
return atomic_inc_return(&irq_log_idx[cpu]) & (ARRAY_SIZE(psprd_debug_log->irq[0]) - 1);
}
#endif /* CONFIG_SPRD_DEBUG_SCHED_LOG */
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