drm/amdgpu: add structures for rlcg indirect reg access

Add structures that are used to cache registers offsets
for rlcg indirect reg access ctrl and flag availability
of such interface
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Zhou, Peng Ju <PengJu.Zhou@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -132,6 +132,16 @@ struct amdgpu_rlc_funcs {
 	bool (*is_rlcg_access_range)(struct amdgpu_device *adev, uint32_t reg);
 };
 
+struct amdgpu_rlcg_reg_access_ctrl {
+	uint32_t scratch_reg0;
+	uint32_t scratch_reg1;
+	uint32_t scratch_reg2;
+	uint32_t scratch_reg3;
+	uint32_t grbm_cntl;
+	uint32_t grbm_idx;
+	uint32_t spare_int;
+};
+
 struct amdgpu_rlc {
 	/* for power gating */
 	struct amdgpu_bo        *save_restore_obj;
@@ -191,6 +201,10 @@ struct amdgpu_rlc {
 	struct amdgpu_bo	*rlc_toc_bo;
 	uint64_t		rlc_toc_gpu_addr;
 	void			*rlc_toc_buf;
+
+	bool rlcg_reg_access_supported;
+	/* registers for rlcg indirect reg access */
+	struct amdgpu_rlcg_reg_access_ctrl reg_access_ctrl;
 };
 
 void amdgpu_gfx_rlc_enter_safe_mode(struct amdgpu_device *adev);