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authorGerd Hoffmann <kraxel@redhat.com>2020-09-15 14:08:52 +0200
committerGerd Hoffmann <kraxel@redhat.com>2020-09-17 14:16:19 +0200
commit14404dd2d1c18529f619461e09e3065e1aa46c7b (patch)
tree3c982fc39e62a9ef02d18d3ea57b74f4f9357892 /hw/acpi
parent38edb514c9c2cba3c3d536504b2cddbfdc915056 (diff)
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acpi: ged: add control regs
Add control regs (sleep, reset) for hw-reduced acpi. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Message-id: 20200915120909.20838-5-kraxel@redhat.com
Diffstat (limited to 'hw/acpi')
-rw-r--r--hw/acpi/generic_event_device.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c
index b8abdef..491df80 100644
--- a/hw/acpi/generic_event_device.c
+++ b/hw/acpi/generic_event_device.c
@@ -20,6 +20,7 @@
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "qemu/error-report.h"
+#include "sysemu/runstate.h"
static const uint32_t ged_supported_events[] = {
ACPI_GED_MEM_HOTPLUG_EVT,
@@ -176,6 +177,45 @@ static const MemoryRegionOps ged_evt_ops = {
},
};
+static uint64_t ged_regs_read(void *opaque, hwaddr addr, unsigned size)
+{
+ return 0;
+}
+
+static void ged_regs_write(void *opaque, hwaddr addr, uint64_t data,
+ unsigned int size)
+{
+ bool slp_en;
+ int slp_typ;
+
+ switch (addr) {
+ case ACPI_GED_REG_SLEEP_CTL:
+ slp_typ = (data >> 2) & 0x07;
+ slp_en = (data >> 5) & 0x01;
+ if (slp_en && slp_typ == 5) {
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ }
+ return;
+ case ACPI_GED_REG_SLEEP_STS:
+ return;
+ case ACPI_GED_REG_RESET:
+ if (data == ACPI_GED_RESET_VALUE) {
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ }
+ return;
+ }
+}
+
+static const MemoryRegionOps ged_regs_ops = {
+ .read = ged_regs_read,
+ .write = ged_regs_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -332,6 +372,10 @@ static void acpi_ged_initfn(Object *obj)
sysbus_init_mmio(sbd, &s->container_memhp);
acpi_memory_hotplug_init(&s->container_memhp, OBJECT(dev),
&s->memhp_state, 0);
+
+ memory_region_init_io(&ged_st->regs, obj, &ged_regs_ops, ged_st,
+ TYPE_ACPI_GED "-regs", ACPI_GED_REG_COUNT);
+ sysbus_init_mmio(sbd, &ged_st->regs);
}
static void acpi_ged_class_init(ObjectClass *class, void *data)