drm/amdgpu: add amdgpu_umc_functions structure

This is common structure as UMC callback function

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Dennis Li <dennis.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -86,6 +86,7 @@
 #include "amdgpu_smu.h"
 #include "amdgpu_discovery.h"
 #include "amdgpu_mes.h"
+#include "amdgpu_umc.h"
 
 #define MAX_GPU_INSTANCE		16
 
@@ -967,6 +968,7 @@ struct amdgpu_device {
 
 	const struct amdgpu_nbio_funcs	*nbio_funcs;
 	const struct amdgpu_df_funcs	*df_funcs;
+	const struct amdgpu_umc_funcs	*umc_funcs;
 
 	/* delayed work_func for deferring clockgating during resume */
 	struct delayed_work     delayed_init_work;

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

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2019  Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __AMDGPU_UMC_H__
+#define __AMDGPU_UMC_H__
+
+struct amdgpu_umc_funcs {
+	void (*query_ras_error_count)(struct amdgpu_device *adev,
+					void *ras_error_status);
+};
+
+#endif