acpi: add acpi_pm1_evt_write_en

Do APCIREGS->pm1.evt.en updates using the new acpi_pm1_evt_write_en
function, so the acpi code will see those updates.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/acpi.c

@@ -268,6 +268,11 @@ void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
     ar->pm1.evt.sts &= ~val;
 }
 
+void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
+{
+    ar->pm1.evt.en = val;
+}
+
 void acpi_pm1_evt_power_down(ACPIREGS *ar)
 {
     if (ar->pm1.evt.en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {

hw/acpi.h

@@ -133,6 +133,7 @@ static inline int64_t acpi_pm_tmr_get_clock(void)
 /* PM1a_EVT: piix and ich9 don't implement PM1b. */
 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
 void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val);
+void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val);
 void acpi_pm1_evt_power_down(ACPIREGS *ar);
 void acpi_pm1_evt_reset(ACPIREGS *ar);
 

hw/acpi_piix4.c

@@ -117,7 +117,7 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width,
         pm_update_sci(s);
         break;
     case 0x02:
-        s->ar.pm1.evt.en = val;
+        acpi_pm1_evt_write_en(&s->ar, val);
         pm_update_sci(s);
         break;
     case 0x04:

hw/vt82c686.c

@@ -206,7 +206,7 @@ static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
         pm_update_sci(s);
         break;
     case 0x02:
-        s->ar.pm1.evt.en = val;
+        acpi_pm1_evt_write_en(&s->ar, val);
         pm_update_sci(s);
         break;
     case 0x04: