/**
* toi_go_atomic - do the actual atomic copy/restore
* @state: The state to use for dpm_suspend_start & power_down calls.
* @suspend_time: Whether we're suspending or resuming.
**/
int toi_go_atomic(pm_message_t state, int suspend_time)
{
if (suspend_time) {
if (platform_begin(1)) {
set_abort_result(TOI_PLATFORM_PREP_FAILED);
toi_end_atomic(ATOMIC_STEP_PLATFORM_END, suspend_time, 3);
return 1;
}
if (dpm_prepare(PMSG_FREEZE)) {
set_abort_result(TOI_DPM_PREPARE_FAILED);
dpm_complete(PMSG_RECOVER);
toi_end_atomic(ATOMIC_STEP_PLATFORM_END, suspend_time, 3);
return 1;
}
}
suspend_console();
ftrace_stop();
pm_restrict_gfp_mask();
if (suspend_time) {
if (dpm_suspend(state)) {
set_abort_result(TOI_DPM_SUSPEND_FAILED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 3);
return 1;
}
} else {
if (dpm_suspend_start(state)) {
set_abort_result(TOI_DPM_SUSPEND_FAILED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 3);
return 1;
}
}
/* At this point, dpm_suspend_start() has been called, but *not*
* dpm_suspend_noirq(). We *must* dpm_suspend_noirq() now.
* Otherwise, drivers for some devices (e.g. interrupt controllers)
* become desynchronized with the actual state of the hardware
* at resume time, and evil weirdness ensues.
*/
if (dpm_suspend_end(state)) {
set_abort_result(TOI_DEVICE_REFUSED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 1);
return 1;
}
if (suspend_time) {
if (platform_pre_snapshot(1))
set_abort_result(TOI_PRE_SNAPSHOT_FAILED);
} else {
if (platform_pre_restore(1))
set_abort_result(TOI_PRE_RESTORE_FAILED);
}
if (test_result_state(TOI_ABORTED)) {
toi_end_atomic(ATOMIC_STEP_PLATFORM_FINISH, suspend_time, 1);
return 1;
}
if (test_action_state(TOI_LATE_CPU_HOTPLUG)) {
if (disable_nonboot_cpus()) {
set_abort_result(TOI_CPU_HOTPLUG_FAILED);
toi_end_atomic(ATOMIC_STEP_CPU_HOTPLUG,
suspend_time, 1);
return 1;
}
}
local_irq_disable();
if (syscore_suspend()) {
set_abort_result(TOI_SYSCORE_REFUSED);
toi_end_atomic(ATOMIC_STEP_IRQS, suspend_time, 1);
return 1;
}
if (suspend_time && pm_wakeup_pending()) {
set_abort_result(TOI_WAKEUP_EVENT);
toi_end_atomic(ATOMIC_STEP_SYSCORE_RESUME, suspend_time, 1);
return 1;
}
return 0;
}
/**
* toi_go_atomic - do the actual atomic copy/restore
* @state: The state to use for dpm_suspend_start & power_down calls.
* @suspend_time: Whether we're suspending or resuming.
**/
int toi_go_atomic(pm_message_t state, int suspend_time)
{
if (suspend_time) {
if (platform_begin(1)) {
set_abort_result(TOI_PLATFORM_PREP_FAILED);
toi_end_atomic(ATOMIC_STEP_PLATFORM_END, suspend_time, 3);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d)\n", __LINE__,
suspend_time, state.event);
return 1;
}
if (dpm_prepare(PMSG_FREEZE)) {
set_abort_result(TOI_DPM_PREPARE_FAILED);
dpm_complete(PMSG_RECOVER);
toi_end_atomic(ATOMIC_STEP_PLATFORM_END, suspend_time, 3);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d)\n", __LINE__,
suspend_time, state.event);
return 1;
}
}
suspend_console();
ftrace_stop();
pm_restrict_gfp_mask();
if (suspend_time) {
#if 0 /* FIXME: jonathan.jmchen: trick code here to let dpm_suspend succeeded, NEED to find out the root cause!! */
if (events_check_enabled) {
hib_log("play trick here set events_check_enabled(%d) = false!!\n",
events_check_enabled);
events_check_enabled = false;
}
#endif
if (dpm_suspend(state)) {
set_abort_result(TOI_DPM_SUSPEND_FAILED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 3);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n",
__LINE__, suspend_time, state.event, toi_result);
return 1;
}
} else {
if (dpm_suspend_start(state)) {
set_abort_result(TOI_DPM_SUSPEND_FAILED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 3);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n",
__LINE__, suspend_time, state.event, toi_result);
return 1;
}
}
/* At this point, dpm_suspend_start() has been called, but *not*
* dpm_suspend_noirq(). We *must* dpm_suspend_noirq() now.
* Otherwise, drivers for some devices (e.g. interrupt controllers)
* become desynchronized with the actual state of the hardware
* at resume time, and evil weirdness ensues.
*/
if (dpm_suspend_end(state)) {
set_abort_result(TOI_DEVICE_REFUSED);
toi_end_atomic(ATOMIC_STEP_DEVICE_RESUME, suspend_time, 1);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n", __LINE__,
suspend_time, state.event, toi_result);
return 1;
}
if (suspend_time) {
if (platform_pre_snapshot(1))
set_abort_result(TOI_PRE_SNAPSHOT_FAILED);
} else {
if (platform_pre_restore(1))
set_abort_result(TOI_PRE_RESTORE_FAILED);
}
if (test_result_state(TOI_ABORTED)) {
toi_end_atomic(ATOMIC_STEP_PLATFORM_FINISH, suspend_time, 1);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n", __LINE__,
suspend_time, state.event, toi_result);
return 1;
}
if (test_action_state(TOI_LATE_CPU_HOTPLUG)) {
if (disable_nonboot_cpus()) {
set_abort_result(TOI_CPU_HOTPLUG_FAILED);
toi_end_atomic(ATOMIC_STEP_CPU_HOTPLUG, suspend_time, 1);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n",
__LINE__, suspend_time, state.event, toi_result);
return 1;
}
}
local_irq_disable();
if (syscore_suspend()) {
set_abort_result(TOI_SYSCORE_REFUSED);
toi_end_atomic(ATOMIC_STEP_IRQS, suspend_time, 1);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n", __LINE__,
suspend_time, state.event, toi_result);
return 1;
}
if (suspend_time && pm_wakeup_pending()) {
set_abort_result(TOI_WAKEUP_EVENT);
toi_end_atomic(ATOMIC_STEP_SYSCORE_RESUME, suspend_time, 1);
hib_log("FAILED @line:%d suspend(%d) pm_state(%d) toi_result(0x%#lx)\n", __LINE__,
suspend_time, state.event, toi_result);
return 1;
}
hib_log("SUCCEEDED @line:%d suspend(%d) pm_state(%d)\n", __LINE__, suspend_time,
state.event);
return 0;
}
