[SeaBIOS] [rfc patch qemu 1/4] wakeup: add acpi gpe wakeup reasons
Gerd Hoffmann
kraxel at redhat.com
Tue Jul 17 14:30:49 CEST 2012
Allocate four acpi gpe bits (0x08 -> 0x0b) for s3 wakeup
configuration and notification.
Signed-off-by: Gerd Hoffmann <kraxel at redhat.com>
---
hw/acpi.c | 26 ++++++++++++++++++++++++++
sysemu.h | 4 ++++
2 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/hw/acpi.c b/hw/acpi.c
index effc7ec..208c4af 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -262,6 +262,22 @@ static void acpi_notify_wakeup(Notifier *notifier, void *data)
ar->pm1.evt.sts |=
(ACPI_BITMASK_WAKE_STATUS | ACPI_BITMASK_TIMER_STATUS);
break;
+ case QEMU_WAKEUP_REASON_GPE_8:
+ ar->pm1.evt.sts |= ACPI_BITMASK_WAKE_STATUS;
+ ar->gpe.sts[1] |= (1 << 0);
+ break;
+ case QEMU_WAKEUP_REASON_GPE_9:
+ ar->pm1.evt.sts |= ACPI_BITMASK_WAKE_STATUS;
+ ar->gpe.sts[1] |= (1 << 1);
+ break;
+ case QEMU_WAKEUP_REASON_GPE_a:
+ ar->pm1.evt.sts |= ACPI_BITMASK_WAKE_STATUS;
+ ar->gpe.sts[1] |= (1 << 2);
+ break;
+ case QEMU_WAKEUP_REASON_GPE_b:
+ ar->pm1.evt.sts |= ACPI_BITMASK_WAKE_STATUS;
+ ar->gpe.sts[1] |= (1 << 3);
+ break;
case QEMU_WAKEUP_REASON_OTHER:
default:
/* ACPI_BITMASK_WAKE_STATUS should be set on resume.
@@ -426,6 +442,10 @@ void acpi_gpe_reset(ACPIREGS *ar)
{
memset(ar->gpe.sts, 0, ar->gpe.len / 2);
memset(ar->gpe.en, 0, ar->gpe.len / 2);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_8, 0);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_9, 0);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_a, 0);
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_b, 0);
}
static uint8_t *acpi_gpe_ioport_get_ptr(ACPIREGS *ar, uint32_t addr)
@@ -455,6 +475,12 @@ void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val)
} else if (addr < ar->gpe.len) {
/* GPE_EN */
*cur = val;
+ if (addr == ar->gpe.len / 2 + 1) {
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_8, val & (1 << 0));
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_9, val & (1 << 1));
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_a, val & (1 << 2));
+ qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_GPE_b, val & (1 << 3));
+ }
} else {
abort();
}
diff --git a/sysemu.h b/sysemu.h
index 6540c79..8cd3443 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -42,6 +42,10 @@ typedef enum WakeupReason {
QEMU_WAKEUP_REASON_OTHER = 0,
QEMU_WAKEUP_REASON_RTC,
QEMU_WAKEUP_REASON_PMTIMER,
+ QEMU_WAKEUP_REASON_GPE_8,
+ QEMU_WAKEUP_REASON_GPE_9,
+ QEMU_WAKEUP_REASON_GPE_a,
+ QEMU_WAKEUP_REASON_GPE_b,
} WakeupReason;
void qemu_system_reset_request(void);
--
1.7.1
More information about the SeaBIOS
mailing list