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acpi, acpi_piix, vt82c686: factor out PM1_CNT logic

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factor out ACPI PM1_CNT logic. This will be used by ich9 acpi.

Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Huacai Chen <zltjiangshi@gmail.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Isaku Yamahata 2011-03-25 19:54:40 +09:00 • committed by Aurelien Jarno
parent 04dc308f68
commit eaba51c573
4 changed files with 74 additions and 52 deletions
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49
hw/acpi.c
View file

@ -279,3 +279,52 @@ void acpi_pm_tmr_reset(ACPIPMTimer *tmr)
tmr->overflow_time = 0;
qemu_del_timer(tmr->timer);
}
/* ACPI PM1aCNT */
void acpi_pm1_cnt_init(ACPIPM1CNT *pm1_cnt, qemu_irq cmos_s3)
{
pm1_cnt->cmos_s3 = cmos_s3;
}
void acpi_pm1_cnt_write(ACPIPM1EVT *pm1a, ACPIPM1CNT *pm1_cnt, uint16_t val)
{
pm1_cnt->cnt = val & ~(ACPI_BITMASK_SLEEP_ENABLE);
if (val & ACPI_BITMASK_SLEEP_ENABLE) {
/* change suspend type */
uint16_t sus_typ = (val >> 10) & 7;
switch(sus_typ) {
case 0: /* soft power off */
qemu_system_shutdown_request();
break;
case 1:
/* ACPI_BITMASK_WAKE_STATUS should be set on resume.
Pretend that resume was caused by power button */
pm1a->sts |=
(ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_POWER_BUTTON_STATUS);
qemu_system_reset_request();
qemu_irq_raise(pm1_cnt->cmos_s3);
default:
break;
}
}
}
void acpi_pm1_cnt_update(ACPIPM1CNT *pm1_cnt,
bool sci_enable, bool sci_disable)
{
/* ACPI specs 3.0, 4.7.2.5 */
if (sci_enable) {
pm1_cnt->cnt |= ACPI_BITMASK_SCI_ENABLE;
} else if (sci_disable) {
pm1_cnt->cnt &= ~ACPI_BITMASK_SCI_ENABLE;
}
}
void acpi_pm1_cnt_reset(ACPIPM1CNT *pm1_cnt)
{
pm1_cnt->cnt = 0;
if (pm1_cnt->cmos_s3) {
qemu_irq_lower(pm1_cnt->cmos_s3);
}
}