/*
* This function gets called by ctrl-alt-del - ie the keyboard interrupt.
* As it's called within an interrupt, it may NOT sync: the only choice
* is whether to reboot at once, or just ignore the ctrl-alt-del.
*/
void ctrl_alt_del(void)
{
static DECLARE_WORK(cad_work, deferred_cad);
if (C_A_D)
schedule_work(&cad_work);
else
kill_cad_pid(SIGINT, 1);
}
static void button_sequence_finished (unsigned long parameters)
{
if (IS_ENABLED(CONFIG_NWBUTTON_REBOOT) &&
button_press_count == reboot_count)
kill_cad_pid(SIGINT, 1); /* Ask init to reboot us */
button_consume_callbacks (button_press_count);
bcount = sprintf (button_output_buffer, "%d\n", button_press_count);
button_press_count = 0; /* Reset the button press counter */
wake_up_interruptible (&button_wait_queue);
}
static void button_sequence_finished (unsigned long parameters)
{
#ifdef CONFIG_NWBUTTON_REBOOT
if (button_press_count == reboot_count)
kill_cad_pid(SIGINT, 1);
#endif
button_consume_callbacks (button_press_count);
bcount = sprintf (button_output_buffer, "%d\n", button_press_count);
button_press_count = 0;
wake_up_interruptible (&button_wait_queue);
}
static inline void ip32_power_button(void)
{
if (has_panicked)
return;
if (shuting_down || kill_cad_pid(SIGINT, 1)) {
/* No init process or button pressed twice. */
ip32_machine_power_off();
}
shuting_down = 1;
blink_timer.data = POWERDOWN_FREQ;
blink_timeout(POWERDOWN_FREQ);
init_timer(&power_timer);
power_timer.function = power_timeout;
power_timer.expires = jiffies + POWERDOWN_TIMEOUT * HZ;
add_timer(&power_timer);
}
static inline void power_button(void)
{
if (machine_state & MACHINE_PANICED)
return;
if ((machine_state & MACHINE_SHUTTING_DOWN) ||
kill_cad_pid(SIGINT, 1)) {
/* No init process or button pressed twice. */
sgi_machine_power_off();
}
machine_state |= MACHINE_SHUTTING_DOWN;
blink_timer.data = POWERDOWN_FREQ;
blink_timeout(POWERDOWN_FREQ);
init_timer(&power_timer);
power_timer.function = power_timeout;
power_timer.expires = jiffies + POWERDOWN_TIMEOUT * HZ;
add_timer(&power_timer);
}
/* check, give feedback and start shutdown after one second */
static void process_shutdown(void)
{
if (shutdown_timer == 0)
printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n");
shutdown_timer++;
/* wait until the button was pressed for 1 second */
if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) {
static const char msg[] = "Shutting down...";
printk(KERN_INFO KTHREAD_NAME ": %s\n", msg);
lcd_print(msg);
/* send kill signal */
if (kill_cad_pid(SIGINT, 1)) {
/* just in case killing init process failed */
if (pm_power_off)
pm_power_off();
}
}
}
static void process_shutdown(void)
{
if (shutdown_timer == 0)
printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n");
shutdown_timer++;
/* */
if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) {
static const char msg[] = "Shutting down...";
printk(KERN_INFO KTHREAD_NAME ": %s\n", msg);
lcd_print(msg);
/* */
if (kill_cad_pid(SIGINT, 1)) {
/* */
if (pm_power_off)
pm_power_off();
}
}
}
static int ps3_sys_manager_handle_event(struct ps3_system_bus_device *dev)
{
int result;
struct {
u8 version;
u8 type;
u8 reserved_1[2];
u32 value;
u8 reserved_2[8];
} event;
BUILD_BUG_ON(sizeof(event) != 16);
result = ps3_vuart_read(dev, &event, sizeof(event));
BUG_ON(result && "need to retry here");
if (event.version != 1) {
dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n",
__func__, __LINE__, event.version);
return -EIO;
}
switch (event.type) {
case PS3_SM_EVENT_POWER_PRESSED:
dev_dbg(&dev->core, "%s:%d: POWER_PRESSED\n",
__func__, __LINE__);
ps3_sm_force_power_off = 1;
/*
* A memory barrier is use here to sync memory since
* ps3_sys_manager_final_restart() could be called on
* another cpu.
*/
wmb();
kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
break;
case PS3_SM_EVENT_POWER_RELEASED:
dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n",
__func__, __LINE__, event.value);
break;
case PS3_SM_EVENT_RESET_PRESSED:
dev_dbg(&dev->core, "%s:%d: RESET_PRESSED\n",
__func__, __LINE__);
ps3_sm_force_power_off = 0;
/*
* A memory barrier is use here to sync memory since
* ps3_sys_manager_final_restart() could be called on
* another cpu.
*/
wmb();
kill_cad_pid(SIGINT, 1); /* ctrl_alt_del */
break;
case PS3_SM_EVENT_RESET_RELEASED:
dev_dbg(&dev->core, "%s:%d: RESET_RELEASED (%u ms)\n",
__func__, __LINE__, event.value);
break;
case PS3_SM_EVENT_THERMAL_ALERT:
dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n",
__func__, __LINE__, event.value);
printk(KERN_INFO "PS3 Thermal Alert Zone %u\n", event.value);
break;
case PS3_SM_EVENT_THERMAL_CLEARED:
dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n",
__func__, __LINE__, event.value);
break;
default:
dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n",
__func__, __LINE__, event.type);
return -EIO;
}
return 0;
}
static int ps3_sys_manager_handle_event(struct ps3_system_bus_device *dev)
{
int result;
struct {
u8 version;
u8 type;
u8 reserved_1[2];
u32 value;
u8 reserved_2[8];
} event;
BUILD_BUG_ON(sizeof(event) != 16);
result = ps3_vuart_read(dev, &event, sizeof(event));
BUG_ON(result && "need to retry here");
if (event.version != 1) {
dev_dbg(&dev->core, "%s:%d: unsupported event version (%u)\n",
__func__, __LINE__, event.version);
return -EIO;
}
switch (event.type) {
case PS3_SM_EVENT_POWER_PRESSED:
dev_dbg(&dev->core, "%s:%d: POWER_PRESSED (%s)\n",
__func__, __LINE__,
(event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft"
: "hard"));
ps3_sm_force_power_off = 1;
wmb();
kill_cad_pid(SIGINT, 1);
break;
case PS3_SM_EVENT_POWER_RELEASED:
dev_dbg(&dev->core, "%s:%d: POWER_RELEASED (%u ms)\n",
__func__, __LINE__, event.value);
break;
case PS3_SM_EVENT_RESET_PRESSED:
dev_dbg(&dev->core, "%s:%d: RESET_PRESSED (%s)\n",
__func__, __LINE__,
(event.value == PS3_SM_BUTTON_EVENT_SOFT ? "soft"
: "hard"));
ps3_sm_force_power_off = 0;
wmb();
kill_cad_pid(SIGINT, 1);
break;
case PS3_SM_EVENT_RESET_RELEASED:
dev_dbg(&dev->core, "%s:%d: RESET_RELEASED (%u ms)\n",
__func__, __LINE__, event.value);
break;
case PS3_SM_EVENT_THERMAL_ALERT:
dev_dbg(&dev->core, "%s:%d: THERMAL_ALERT (zone %u)\n",
__func__, __LINE__, event.value);
pr_info("PS3 Thermal Alert Zone %u\n", event.value);
break;
case PS3_SM_EVENT_THERMAL_CLEARED:
dev_dbg(&dev->core, "%s:%d: THERMAL_CLEARED (zone %u)\n",
__func__, __LINE__, event.value);
break;
default:
dev_dbg(&dev->core, "%s:%d: unknown event (%u)\n",
__func__, __LINE__, event.type);
return -EIO;
}
return 0;
}