From: Xuemei Liu <liu.xuemei1@zte.com.cn>

For riscv virt machine, add powerdown notification callback
and send ACPI_POWER_DOWN_STATUS event by acpi ged. Also add
acpi dsdt table for ACPI_POWER_BUTTON_DEVICE device in this
patch.

Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
---
 hw/riscv/virt-acpi-build.c |  2 ++
 hw/riscv/virt.c            | 14 ++++++++++++++
 include/hw/riscv/virt.h    |  1 +
 3 files changed, 17 insertions(+)

diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index 1717b1c24f..77aea55ece 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -504,6 +504,8 @@ static void build_dsdt(GArray *table_data,
                   ACPI_GED_IRQ, AML_SYSTEM_MEMORY,
                   s->memmap[VIRT_ACPI_GED].base);

+    acpi_dsdt_add_power_button(scope);
+
     aml_append(dsdt, scope);

     /* copy AML table into ACPI tables blob and patch header there */
diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 1d7011b952..01efbf82e5 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -51,6 +51,7 @@
 #include "system/kvm.h"
 #include "system/tpm.h"
 #include "system/qtest.h"
+#include "system/runstate.h"
 #include "hw/pci/pci.h"
 #include "hw/pci-host/gpex.h"
 #include "hw/display/ramfb.h"
@@ -1446,6 +1447,16 @@ static void virt_build_smbios(RISCVVirtState *s)
     }
 }

+static void virt_powerdown_req(Notifier *notifier, void *opaque)
+{
+    RISCVVirtState *s;
+
+    s = container_of(notifier, RISCVVirtState, powerdown_notifier);
+    if (s->acpi_ged) {
+        acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
+    }
+}
+
 static void virt_machine_done(Notifier *notifier, void *data)
 {
     RISCVVirtState *s = container_of(notifier, RISCVVirtState,
@@ -1766,6 +1777,9 @@ static void virt_machine_init(MachineState *machine)
         sysbus_realize_and_unref(SYS_BUS_DEVICE(iommu_sys), &error_fatal);
     }

+    s->powerdown_notifier.notify = virt_powerdown_req;
+    qemu_register_powerdown_notifier(&s->powerdown_notifier);
+
     s->machine_done.notify = virt_machine_done;
     qemu_add_machine_init_done_notifier(&s->machine_done);
 }
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
index 9ea0b3b7b6..e631d57268 100644
--- a/include/hw/riscv/virt.h
+++ b/include/hw/riscv/virt.h
@@ -47,6 +47,7 @@ struct RISCVVirtState {

     /*< public >*/
     Notifier machine_done;
+    Notifier powerdown_notifier;
     DeviceState *acpi_ged;
     DeviceState *platform_bus_dev;
     RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
-- 
2.27.0