if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
return;
+ if (boot_cpu_has(X86_FEATURE_AMDC1E))
+ type = ACPI_STATE_C1;
+
/*
* Check, if one of the previous states already marked the lapic
* unstable
* Suspend / resume control
*/
static int acpi_idle_suspend;
+static u32 saved_bm_rld;
+
+static void acpi_idle_bm_rld_save(void)
+{
+ acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
+}
+static void acpi_idle_bm_rld_restore(void)
+{
+ u32 resumed_bm_rld;
+
+ acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
+
+ if (resumed_bm_rld != saved_bm_rld)
+ acpi_write_bit_register(ACPI_BITREG_BUS_MASTER_RLD, saved_bm_rld);
+}
int acpi_processor_suspend(struct acpi_device * device, pm_message_t state)
{
+ if (acpi_idle_suspend == 1)
+ return 0;
+
+ acpi_idle_bm_rld_save();
acpi_idle_suspend = 1;
return 0;
}
int acpi_processor_resume(struct acpi_device * device)
{
+ if (acpi_idle_suspend == 0)
+ return 0;
+
+ acpi_idle_bm_rld_restore();
acpi_idle_suspend = 0;
return 0;
}
pr->power.timer_broadcast_on_state = INT_MAX;
- for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
+ for (i = 1; i < ACPI_PROCESSOR_MAX_POWER && i <= max_cstate; i++) {
struct acpi_processor_cx *cx = &pr->power.states[i];
switch (cx->type) {
case ACPI_STATE_C1:
cx->valid = 1;
+ acpi_timer_check_state(i, pr, cx);
break;
case ACPI_STATE_C2:
/* Do not access any ACPI IO ports in suspend path */
if (acpi_idle_suspend) {
- acpi_safe_halt();
local_irq_enable();
+ cpu_relax();
return 0;
}
+ acpi_state_timer_broadcast(pr, cx, 1);
kt1 = ktime_get_real();
acpi_idle_do_entry(cx);
kt2 = ktime_get_real();
local_irq_enable();
cx->usage++;
+ acpi_state_timer_broadcast(pr, cx, 0);
return idle_time;
}