[PATCH v5 15/21] arm/virt: Wire up a GED error device for ACPI / GHES

[Mauro Carvalho Chehab <mchehab+huawei@kernel.org>]

Adds support to ARM virtualization to allow handling
generic error ACPI Event via GED & error source device.

It is aligned with Linux Kernel patch:
https://lore.kernel.org/lkml/1272350481-27951-8-git-send-email-ying.huang@intel.com/

Co-authored-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Co-authored-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/arm/virt-acpi-build.c |  1 +
 hw/arm/virt.c            | 12 +++++++++++-
 include/hw/arm/virt.h    |  1 +
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 03ee30b3b3f0..841078f65880 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -861,6 +861,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
     }
 
     acpi_dsdt_add_power_button(scope);
+    aml_append(scope, aml_error_device());
 #ifdef CONFIG_TPM
     acpi_dsdt_add_tpm(scope, vms);
 #endif
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 4a5a9666e916..3faf32f900b5 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -678,7 +678,7 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
     DeviceState *dev;
     MachineState *ms = MACHINE(vms);
     int irq = vms->irqmap[VIRT_ACPI_GED];
-    uint32_t event = ACPI_GED_PWR_DOWN_EVT;
+    uint32_t event = ACPI_GED_PWR_DOWN_EVT | ACPI_GED_ERROR_EVT;
 
     if (ms->ram_slots) {
         event |= ACPI_GED_MEM_HOTPLUG_EVT;
@@ -1010,6 +1010,13 @@ static void virt_powerdown_req(Notifier *n, void *opaque)
     }
 }
 
+static void virt_generic_error_req(Notifier *n, void *opaque)
+{
+    VirtMachineState *s = container_of(n, VirtMachineState, generic_error_notifier);
+
+    acpi_send_event(s->acpi_dev, ACPI_GENERIC_ERROR);
+}
+
 static void create_gpio_keys(char *fdt, DeviceState *pl061_dev,
                              uint32_t phandle)
 {
@@ -2404,6 +2411,9 @@ static void machvirt_init(MachineState *machine)
 
     if (has_ged && aarch64 && firmware_loaded && virt_is_acpi_enabled(vms)) {
         vms->acpi_dev = create_acpi_ged(vms);
+        vms->generic_error_notifier.notify = virt_generic_error_req;
+        notifier_list_add(&acpi_generic_error_notifiers,
+                          &vms->generic_error_notifier);
     } else {
         create_gpio_devices(vms, VIRT_GPIO, sysmem);
     }
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index c8e94e6aedc9..f3cf28436770 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -176,6 +176,7 @@ struct VirtMachineState {
     DeviceState *gic;
     DeviceState *acpi_dev;
     Notifier powerdown_notifier;
+    Notifier generic_error_notifier;
     PCIBus *bus;
     char *oem_id;
     char *oem_table_id;
-- 
2.48.1