drm/amdgpu: Add RAS_POISON_READY host response message

In a non-FLR page avoidance scenario, the host driver will
provide the bad pages in the pf2vf exchange region.

Adding a new host response message to indicate when the
pf2vf exchange region has been updated.
Signed-off-by: Victor Skvortsov <victor.skvortsov@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c

@@ -170,6 +170,10 @@ static int xgpu_nv_send_access_requests_with_param(struct amdgpu_device *adev,
 	case IDH_REQ_GPU_INIT_DATA:
 		event = IDH_REQ_GPU_INIT_DATA_READY;
 		break;
+	case IDH_RAS_POISON:
+		if (data1 != 0)
+			event = IDH_RAS_POISON_READY;
+		break;
 	default:
 		break;
 	}
@@ -437,8 +441,10 @@ static void xgpu_nv_ras_poison_handler(struct amdgpu_device *adev,
 	if (amdgpu_ip_version(adev, UMC_HWIP, 0) < IP_VERSION(12, 0, 0)) {
 		xgpu_nv_send_access_requests(adev, IDH_RAS_POISON);
 	} else {
+		amdgpu_virt_fini_data_exchange(adev);
 		xgpu_nv_send_access_requests_with_param(adev,
 					IDH_RAS_POISON,	block, 0, 0);
+		amdgpu_virt_init_data_exchange(adev);
 	}
 }
 

drivers/gpu/drm/amd/amdgpu/mxgpu_nv.h

@@ -51,6 +51,7 @@ enum idh_event {
 	IDH_FAIL,
 	IDH_QUERY_ALIVE,
 	IDH_REQ_GPU_INIT_DATA_READY,
+	IDH_RAS_POISON_READY,
 
 	IDH_TEXT_MESSAGE = 255,
 };