/**
*
* Log subsystem restart failure reason
*/
static void dsps_log_sfr(void)
{
const char dflt_reason[] = "Died too early due to unknown reason";
char *smem_reset_reason;
unsigned smem_reset_size;
#if CCI_KLOG_CRASH_SIZE
set_fault_state(0x5, -1, "dsps");
#endif // #if CCI_KLOG_CRASH_SIZE
smem_reset_reason = smem_get_entry(SMEM_SSR_REASON_DSPS0,
&smem_reset_size);
if (smem_reset_reason != NULL && smem_reset_reason[0] != 0) {
smem_reset_reason[smem_reset_size-1] = 0;
pr_err("%s: DSPS failure: %s\nResetting DSPS\n",
__func__, smem_reset_reason);
memset(smem_reset_reason, 0, smem_reset_size);
wmb();
} else
pr_err("%s: DSPS failure: %s\nResetting DSPS\n",
__func__, dflt_reason);
}
/*
* This function is protected against re-entrancy.
*/
void die(const char *str, struct pt_regs *regs, int err)
{
struct thread_info *thread = current_thread_info();
int ret;
oops_enter();
#ifdef CCI_KLOG_CRASH_SIZE
#if CCI_KLOG_CRASH_SIZE
set_fault_state(FAULT_LEVEL_DIE, err, str);
#endif // #if CCI_KLOG_CRASH_SIZE
#endif // #ifdef CCI_KLOG_CRASH_SIZE
raw_spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
ret = __die(str, err, thread, regs);
if (regs && kexec_should_crash(thread->task))
crash_kexec(regs);
bust_spinlocks(0);
add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE);
/* keep preemption/irq disabled in KE flow to prevent context switch*/
/*raw_spin_unlock_irq(&die_lock);*/
oops_exit();
if (in_interrupt())
panic("Fatal exception in interrupt");
if (panic_on_oops)
panic("Fatal exception");
if (ret != NOTIFY_STOP)
do_exit(SIGSEGV);
}
static void smsm_state_cb_hdlr(void *data, uint32_t old_state,
uint32_t new_state)
{
char *smem_reset_reason;
char buffer[MAX_BUF_SIZE];
unsigned smem_reset_size;
unsigned size;
#ifdef CCI_KLOG_CRASH_SIZE
#if CCI_KLOG_CRASH_SIZE
set_fault_state(0x5, -1, "riva");
#endif // #if CCI_KLOG_CRASH_SIZE
#endif // #ifdef CCI_KLOG_CRASH_SIZE
riva_crash = true;
pr_err("%s: smsm state changed\n", MODULE_NAME);
wcnss_riva_dump_pmic_regs();
if (!(new_state & SMSM_RESET))
return;
if (ss_restart_inprogress) {
pr_err("%s: Ignoring smsm reset req, restart in progress\n",
MODULE_NAME);
return;
}
if (!enable_riva_ssr)
{
if((inactive == system_flag) || (normalreboot == system_flag) || (adloadmode == system_flag) ||(poweroff == system_flag))
system_flag = rivafatal;
#ifdef CONFIG_CCI_KLOG
*powerpt = (POWERONOFFRECORD + system_flag);
*unknowflag = 0;
*backupcrashflag = 0;
#endif
set_warmboot();
#ifdef CONFIG_CCI_KLOG
#ifdef CCI_KLOG_ALLOW_FORCE_PANIC
__raw_writel(CONFIG_WARMBOOT_CRASH, restart_reason);
#else
__raw_writel(CONFIG_WARMBOOT_NORMAL, restart_reason);
*backupcrashflag = CONFIG_WARMBOOT_CRASH;
#endif
#endif
mb();
panic(MODULE_NAME ": SMSM reset request received from Riva");
}
smem_reset_reason = smem_get_entry(SMEM_SSR_REASON_WCNSS0,
&smem_reset_size);
if (!smem_reset_reason || !smem_reset_size) {
pr_err("%s: wcnss subsystem failure reason: %s\n",
__func__, "(unknown, smem_get_entry failed)");
} else if (!smem_reset_reason[0]) {
pr_err("%s: wcnss subsystem failure reason: %s\n",
__func__, "(unknown, init string found)");
} else {
size = smem_reset_size < MAX_BUF_SIZE ? smem_reset_size :
(MAX_BUF_SIZE - 1);
memcpy(buffer, smem_reset_reason, size);
buffer[size] = '\0';
pr_err("%s: wcnss subsystem failure reason: %s\n",
__func__, buffer);
memset(smem_reset_reason, 0, smem_reset_size);
wmb();
}
ss_restart_inprogress = true;
subsystem_restart_dev(riva_8960_dev);
}
