RTC: Do not fire timer periodically to catch next alarm

[qemu.git] / hw / acpi.c

diff --git a/hw/acpi.c b/hw/acpi.c
index c05dde6c89c1f076cf9af8aaf444c59536f51cb4..f7950be2675d7b29a96ab729c28d315707847ca8 100644 (file)
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -22,6 +22,7 @@
 #include "hw.h"
 #include "pc.h"
 #include "acpi.h"
+#include "monitor.h"
 
 struct acpi_table_header {
     uint16_t _length;         /* our length, not actual part of the hdr */
@@ -258,6 +259,10 @@ static void acpi_notify_wakeup(Notifier *notifier, void *data)
         ar->pm1.evt.sts |=
             (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_RT_CLOCK_STATUS);
         break;
+    case QEMU_WAKEUP_REASON_PMTIMER:
+        ar->pm1.evt.sts |=
+            (ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
+        break;
     case QEMU_WAKEUP_REASON_OTHER:
     default:
         /* ACPI_BITMASK_WAKE_STATUS should be set on resume.
@@ -293,6 +298,8 @@ void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
     ar->pm1.evt.en = val;
     qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
                               val & ACPI_BITMASK_RT_CLOCK_ENABLE);
+    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER,
+                              val & ACPI_BITMASK_TIMER_ENABLE);
 }
 
 void acpi_pm1_evt_power_down(ACPIREGS *ar)
@@ -308,6 +315,7 @@ void acpi_pm1_evt_reset(ACPIREGS *ar)
     ar->pm1.evt.sts = 0;
     ar->pm1.evt.en = 0;
     qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC, 0);
+    qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER, 0);
 }
 
 /* ACPI PM_TMR */
@@ -340,6 +348,7 @@ uint32_t acpi_pm_tmr_get(ACPIREGS *ar)
 static void acpi_pm_tmr_timer(void *opaque)
 {
     ACPIREGS *ar = opaque;
+    qemu_system_wakeup_request(QEMU_WAKEUP_REASON_PMTIMER);
     ar->tmr.update_sci(ar);
 }
 
@@ -362,7 +371,7 @@ void acpi_pm1_cnt_init(ACPIREGS *ar)
     qemu_register_wakeup_notifier(&ar->wakeup);
 }
 
-void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val)
+void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val, char s4)
 {
     ar->pm1.cnt.cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
 
@@ -377,6 +386,10 @@ void acpi_pm1_cnt_write(ACPIREGS *ar, uint16_t val)
             qemu_system_suspend_request();
             break;
         default:
+            if (sus_typ == s4) { /* S4 request */
+                monitor_protocol_event(QEVENT_SUSPEND_DISK, NULL);
+                qemu_system_shutdown_request();
+            }
             break;
         }
     }