static void hib_unplug_cores(void)
{
int i = 0;
hib_warn("unplug cores\n");
#ifdef CONFIG_CPU_FREQ_GOV_HOTPLUG
mutex_lock(&hp_onoff_mutex);
#endif
for (i = (num_possible_cpus() - 1); i > 0 && num_online_cpus() > HIB_MULTIIO_CORES; i--) {
if (cpu_online(i)) {
int err;
hib_log("cpu %d down...\n", i);
err = cpu_down(i);
if (err < 0) {
hib_warn("cpu %d down...failed(%d)\n", i, err);
} else {
hib_log("cpu %d down...done\n", i, err);
}
}
}
#ifdef CONFIG_CPU_FREQ_GOV_HOTPLUG
mutex_unlock(&hp_onoff_mutex);
#endif
}
int swsusp_helper_pm_restore_noirq(struct device *device)
{
int id, ret = 0, retall = 0;
hib_log("[%s] enter...\n", __func__);
BUG_ON(!initialized);
for (id = ID_M_BEGIN; id < ID_M_END; id++) {
if (restore_noirq_func_table[id].func != NULL) {
hib_warn("exec func %d:0x%p !\n", restore_noirq_func_table[id].id, restore_noirq_func_table[id].func);
if (id != restore_noirq_func_table[id].id) {
hib_err("exec func fail: func id miss-matched (%d/%d) !\n", id, restore_noirq_func_table[id].id);
continue;
}
ret =
restore_noirq_func_table[id].func(restore_noirq_func_table[id].device);
if (ret != 0) {
hib_warn("exec func fail: func id(%d), err code %d !\n",
restore_noirq_func_table[id].id, ret);
retall = ret;
}
}
}
return retall;
}
/* en: 1 enable, en: 0 disable */
static void hib_hotplug_mode(int en)
{
static int g_hp_disable = 0;
if (en) {
if (1 == g_hp_disable) {
hib_warn("enable hotplug\n");
#if defined(CONFIG_CPU_FREQ_DEFAULT_GOV_HOTPLUG) || defined(CONFIG_CPU_FREQ_DEFAULT_GOV_BALANCE)
hp_set_dynamic_cpu_hotplug_enable(1);
#else
hps_set_enabled(1);
#endif
g_hp_disable = 0;
}
} else if (!en) {
if (0 == g_hp_disable) {
hib_warn("disable hotplug\n");
#if defined(CONFIG_CPU_FREQ_DEFAULT_GOV_HOTPLUG) || defined(CONFIG_CPU_FREQ_DEFAULT_GOV_BALANCE)
hp_set_dynamic_cpu_hotplug_enable(0);
#else
hps_set_enabled(0);
#endif
hib_unplug_cores();
g_hp_disable = 1;
}
}
}
static void hib_ftrace_buffer(int en)
{
#if defined(CONFIG_MTK_SCHED_TRACERS)
int fterr = 0;
hib_warn("%s ftrace mode\n", (en ? "enable" : "disable"));
fterr = resize_ring_buffer_for_hibernation(en);
if (fterr < 0)
hib_warn("calling resize_ring_buffer_for_hibernation() failed (%d)\n", fterr);
#endif
}
/* NOTICE: this function MUST be called under autosleep_lock (in autosleep.c) is locked!! */
int mtk_hibernate_via_autosleep(suspend_state_t *autosleep_state)
{
int err = 0;
hib_log("entering hibernation state(%d)\n", *autosleep_state);
err = hibernate();
if (err) {
hib_warn
("@@@@@@@@@@@@@@@@@@@@@@@@@\n@@_Hibernation Failed_@@@\n@@@@@@@@@@@@@@@@@@@@@@@@@\n");
/* enhanced error handling */
#ifdef CONFIG_TOI_ENHANCE
if (toi_hibernate_fatalerror()) {
kernel_power_off();
kernel_halt();
BUG();
}
#endif
if (hibernation_failed_action == HIB_FAILED_TO_SHUTDOWN) {
kernel_power_off();
kernel_halt();
BUG();
} else if (hibernation_failed_action == HIB_FAILED_TO_S2RAM) {
hib_warn("hibernation failed: so changing state(%d->%d) err(%d)\n",
*autosleep_state, PM_SUSPEND_MEM, err);
if (++hib_failed_cnt >= MAX_HIB_FAILED_CNT)
hibernation_failed_action = HIB_FAILED_TO_SHUTDOWN;
hibernate_recover();
*autosleep_state = PM_SUSPEND_MEM;
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
} else {
hib_err("@@@@@@@@@@@@@@@@@@\n@_FATAL ERROR !!!_\n@@@@@@@@@@@@@@@@@@@\n");
BUG();
}
} else {
if (hybrid_sleep_mode()) {
hib_warn("hybrid sleep mode so changing state(%d->%d)\n", *autosleep_state,
PM_SUSPEND_MEM);
*autosleep_state = PM_SUSPEND_MEM; /* continue suspend to ram if hybrid sleep mode */
} else {
hib_warn("hibernation succeeded: so changing state(%d->%d) err(%d)\n",
*autosleep_state, PM_SUSPEND_ON, err);
hibernate_restore();
*autosleep_state = PM_SUSPEND_ON; /* if this is not set, it will recursively do hibernating!! */
}
hib_failed_cnt = 0;
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
}
return err;
}
int register_swsusp_restore_noirq_func(unsigned int id, swsusp_cb_func_t func,
struct device *device)
{
int ret = 0;
swsusp_cb_func_info *info_ptr;
BUG_ON(!initialized);
if ((id >= MAX_CB_FUNCS) || (func == NULL)) {
hib_err("register func fail: func_id: %d!\n", id);
return E_PARAM;
}
info_ptr = &(restore_noirq_func_table[id]);
if (info_ptr->func == NULL) {
info_ptr->id = id;
info_ptr->func = func;
info_ptr->device = device;
hib_warn("reg. func %d:0x%p with device %s%p\n",
restore_noirq_func_table[id].id,
restore_noirq_func_table[id].func,
(device == NULL) ? " " : "0x",
restore_noirq_func_table[id].device);
} else
hib_err("register func fail: func(%d) already registered!\n", id);
return ret;
}
static void hibernate_restore(void)
{
hib_ftrace_buffer(1);
hib_hotplug_mode(1);
hib_warn("start trigger ipod\n");
}
/* en: 1 enable, en: 0 disable */
static void hib_hotplug_mode(int en)
{
static int g_hp_disable;
if (en) {
if (1 == g_hp_disable) {
hib_warn("enable hotplug\n");
hp_set_dynamic_cpu_hotplug_enable(1);
g_hp_disable = 0;
}
} else if (!en) {
if (0 == g_hp_disable) {
hib_warn("disable hotplug\n");
hp_set_dynamic_cpu_hotplug_enable(0);
hib_unplug_cores();
g_hp_disable = 1;
}
}
}
/* called by echo "disk" > /sys/power/state */
int mtk_hibernate(void)
{
int err = 0;
hib_log("entering hibernation\n");
err = hibernate();
if (err) {
hib_warn
("@@@@@@@@@@@@@@@@@@@@@@@@@\n@@_Hibernation Failed_@@@\n@@@@@@@@@@@@@@@@@@@@@@@@@\n");
/* enhanced error handling */
#ifdef CONFIG_TOI_ENHANCE
if (toi_hibernate_fatalerror()) {
kernel_power_off();
kernel_halt();
BUG();
}
#endif
if (hibernation_failed_action == HIB_FAILED_TO_SHUTDOWN) {
kernel_power_off();
kernel_halt();
BUG();
} else if (hibernation_failed_action == HIB_FAILED_TO_S2RAM) {
hib_warn("hibernation failed, suspend to ram instead!\n");
if (++hib_failed_cnt >= MAX_HIB_FAILED_CNT)
hibernation_failed_action = HIB_FAILED_TO_SHUTDOWN;
hibernate_recover();
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
} else {
hib_err("@@@@@@@@@@@@@@@@@@\n@_FATAL ERROR !!!_\n@@@@@@@@@@@@@@@@@@@\n");
BUG();
}
} else {
if (!hybrid_sleep_mode()) {
hibernate_restore();
}
hib_failed_cnt = 0;
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
}
return err;
}
// NOTICE: this function MUST be called under autosleep_lock (in autosleep.c) is locked!!
int mtk_hibernate_via_autosleep(suspend_state_t *autosleep_state)
{
int err = 0;
hib_log("entering hibernation state(%d)\n", *autosleep_state);
err = hibernate();
if (err) {
hib_warn("@@@@@@@@@@@@@@@@@@@@@@@@@\n@@_Hibernation Failed_@@@\n@@@@@@@@@@@@@@@@@@@@@@@@@\n");
if (hibernation_failed_action == HIB_FAILED_TO_SHUTDOWN) {
kernel_power_off();
kernel_halt();
BUG();
} else if (hibernation_failed_action == HIB_FAILED_TO_S2RAM) {
hib_warn("hibernation failed: so changing state(%d->%d) err(%d)\n", *autosleep_state, PM_SUSPEND_MEM, err);
if (++hib_failed_cnt >= MAX_HIB_FAILED_CNT)
hibernation_failed_action = HIB_FAILED_TO_SHUTDOWN;
// userspace recover if hibernation failed
usr_recover_func(NULL);
*autosleep_state = PM_SUSPEND_MEM;
system_is_hibernating = false;
} else {
hib_err("@@@@@@@@@@@@@@@@@@\n@_FATAL ERROR !!!_\n@@@@@@@@@@@@@@@@@@@\n");
BUG();
}
} else {
if (hybrid_sleep_mode()) {
hib_warn("hybrid sleep mode so changing state(%d->%d)\n", *autosleep_state, PM_SUSPEND_MEM);
*autosleep_state = PM_SUSPEND_MEM; //continue suspend to ram if hybrid sleep mode
} else {
hib_warn("hibernation succeeded: so changing state(%d->%d) err(%d) \n", *autosleep_state, PM_SUSPEND_ON, err);
hib_warn("start trigger ipod\n");
//usr_bootanim_start(NULL);
//schedule_delayed_work(&usr_restore_work, HZ*0.05);
usr_restore_func(NULL);
*autosleep_state = PM_SUSPEND_ON; // if this is not set, it will recursively do hibernating!!
}
hib_failed_cnt = 0;
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
}
return err;
}
int bad_memory_status(void)
{
struct zone *zone;
unsigned long free_pages, min_pages;
for_each_populated_zone(zone) {
if (!strcmp(zone->name, "Normal")) {
free_pages = zone_page_state(zone, NR_FREE_PAGES);
min_pages = min_wmark_pages(zone);
if (free_pages < (min_pages + HIB_PAGE_FREE_DELTA)) {
hib_warn("abort hibernate due to %s memory status: (%lu:%lu)\n",
zone->name, free_pages, min_pages);
return -1;
} else {
hib_warn("%s memory status: (%lu:%lu)\n", zone->name, free_pages,
min_pages);
}
}
}
return 0;
}
// called by echo "disk" > /sys/power/state
int mtk_hibernate(void)
{
int err = 0;
hib_log("entering hibernation\n");
err = hibernate();
if (err) {
hib_warn("@@@@@@@@@@@@@@@@@@@@@@@@@\n@@_Hibernation Failed_@@@\n@@@@@@@@@@@@@@@@@@@@@@@@@\n");
if (hibernation_failed_action == HIB_FAILED_TO_SHUTDOWN) {
kernel_power_off();
kernel_halt();
BUG();
} else if (hibernation_failed_action == HIB_FAILED_TO_S2RAM) {
hib_warn("hibernation failed, suspend to ram instead!\n");
if (++hib_failed_cnt >= MAX_HIB_FAILED_CNT)
hibernation_failed_action = HIB_FAILED_TO_SHUTDOWN;
// userspace recover if hibernation failed
usr_recover_func(NULL);
system_is_hibernating = false;
} else {
hib_err("@@@@@@@@@@@@@@@@@@\n@_FATAL ERROR !!!_\n@@@@@@@@@@@@@@@@@@@\n");
BUG();
}
} else {
if (!hybrid_sleep_mode()) {
hib_warn("start trigger ipod\n");
//schedule_delayed_work(&usr_bootanim_start_work, HZ*1.0);
//schedule_delayed_work(&usr_restore_work, HZ*0.05);
//usr_bootanim_start(NULL);
usr_restore_func(NULL);
}
hib_failed_cnt = 0;
pm_wake_lock("IPOD_HIB_WAKELOCK");
system_is_hibernating = false;
}
return err;
}
int unregister_swsusp_restore_noirq_func(unsigned int id)
{
int ret = 0;
swsusp_cb_func_info *info_ptr;
if (id >= MAX_CB_FUNCS) {
hib_err("register func fail: func_id: %d!\n", id);
return E_PARAM;
}
info_ptr = &(restore_noirq_func_table[id]);
if (info_ptr->func != NULL) {
info_ptr->id = -1;
info_ptr->func = NULL;
info_ptr->device = NULL;
} else
hib_warn("register func fail: func(%d) already unregistered!\n", id);
return ret;
}
int swsusp_helper_pm_restore_noirq(struct device *device)
{
int id, ret = 0, retall = 0;
hib_log("[%s] enter...\n", __func__);
for (id = ID_M_BEGIN; id < ID_M_END; id++) {
if (restore_noirq_func_table[id].func != NULL) {
ret =
restore_noirq_func_table[id].func(restore_noirq_func_table[id].device);
if (ret != 0) {
hib_warn("exec func fail: func id(%d), err code %d !\n",
restore_noirq_func_table[id].id, ret);
retall = ret;
}
}
}
return retall;
}
int exec_swsusp_restore_noirq_func(unsigned int id)
{
swsusp_cb_func_t func;
struct device *device = NULL;
int ret = 0;
if (id >= MAX_CB_FUNCS) {
hib_err("exec func fail: invalid func id(%d)!\n", id);
return E_PARAM;
}
func = restore_noirq_func_table[id].func;
device = restore_noirq_func_table[id].device;
if (func != NULL) {
ret = func(device);
} else {
ret = E_NO_EXIST;
hib_warn("exec func fail: func id(%d) not register!\n", id);
}
return ret;
}
int register_swsusp_restore_noirq_func(unsigned int id, swsusp_cb_func_t func,
struct device *device)
{
int ret = 0;
swsusp_cb_func_info *info_ptr;
if ((id >= MAX_CB_FUNCS) || (func == NULL)) {
hib_err("register func fail: func_id: %d!\n", id);
return E_PARAM;
}
info_ptr = &(restore_noirq_func_table[id]);
if (info_ptr->func == NULL) {
info_ptr->id = id;
info_ptr->func = func;
info_ptr->device = device;
if (device == NULL)
hib_warn("register func(%d:0x%p) with device NULL\n", id, func);
} else
hib_err("register func fail: func(%d) already registered!\n", id);
return ret;
}