drm/amdgpu: support gfx ras error injection and err_cnt query

check gfx error count in both ras querry function and
ras interrupt handler.

gfx ras is still disabled by default due to known stability
issue found in gpu reset.

Signed-off-by: Dennis Li <Dennis.Li@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -602,6 +602,10 @@ int amdgpu_ras_error_query(struct amdgpu_device *adev,
 		if (adev->umc.funcs->query_ras_error_count)
 			adev->umc.funcs->query_ras_error_count(adev, &err_data);
 		break;
+	case AMDGPU_RAS_BLOCK__GFX:
+		if (adev->gfx.funcs->query_ras_error_count)
+			adev->gfx.funcs->query_ras_error_count(adev, &err_data);
+		break;
 	default:
 		break;
 	}
@@ -639,13 +643,22 @@ int amdgpu_ras_error_inject(struct amdgpu_device *adev,
 	if (!obj)
 		return -EINVAL;
 
-	if (block_info.block_id != TA_RAS_BLOCK__UMC) {
+	switch (info->head.block) {
+	case AMDGPU_RAS_BLOCK__GFX:
+		if (adev->gfx.funcs->ras_error_inject)
+			ret = adev->gfx.funcs->ras_error_inject(adev, info);
+		else
+			ret = -EINVAL;
+		break;
+	case AMDGPU_RAS_BLOCK__UMC:
+		ret = psp_ras_trigger_error(&adev->psp, &block_info);
+		break;
+	default:
 		DRM_INFO("%s error injection is not supported yet\n",
 			 ras_block_str(info->head.block));
-		return -EINVAL;
+		ret = -EINVAL;
 	}
 
-	ret = psp_ras_trigger_error(&adev->psp, &block_info);
 	if (ret)
 		DRM_ERROR("RAS ERROR: inject %s error failed ret %d\n",
 				ras_block_str(info->head.block),

drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

@@ -5611,6 +5611,8 @@ static int gfx_v9_0_process_ras_data_cb(struct amdgpu_device *adev,
 {
 	/* TODO ue will trigger an interrupt. */
 	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
+	if (adev->gfx.funcs->query_ras_error_count)
+		adev->gfx.funcs->query_ras_error_count(adev, err_data);
 	amdgpu_ras_reset_gpu(adev, 0);
 	return AMDGPU_RAS_UE;
 }