drm/amdgpu: init rlcg_reg_access_ctrl for gfx9

Initialize all the register offsets that will be
used in rlcg indirect reg access path for gfx9 in
sw_init phase

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/gfx_v9_0.c

@@ -1983,6 +1983,21 @@ static int gfx_v9_0_cp_jump_table_num(struct amdgpu_device *adev)
 		return 4;
 }
 
+static void gfx_v9_0_init_rlcg_reg_access_ctrl(struct amdgpu_device *adev)
+{
+	struct amdgpu_rlcg_reg_access_ctrl *reg_access_ctrl;
+
+	reg_access_ctrl = &adev->gfx.rlc.reg_access_ctrl;
+	reg_access_ctrl->scratch_reg0 = SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG0);
+	reg_access_ctrl->scratch_reg1 = SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG1);
+	reg_access_ctrl->scratch_reg2 = SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG2);
+	reg_access_ctrl->scratch_reg3 = SOC15_REG_OFFSET(GC, 0, mmSCRATCH_REG3);
+	reg_access_ctrl->grbm_cntl = SOC15_REG_OFFSET(GC, 0, mmGRBM_GFX_CNTL);
+	reg_access_ctrl->grbm_idx = SOC15_REG_OFFSET(GC, 0, mmGRBM_GFX_INDEX);
+	reg_access_ctrl->spare_int = SOC15_REG_OFFSET(GC, 0, mmRLC_SPARE_INT);
+	adev->gfx.rlc.rlcg_reg_access_supported = true;
+}
+
 static int gfx_v9_0_rlc_init(struct amdgpu_device *adev)
 {
 	const struct cs_section_def *cs_data;
@@ -2023,6 +2038,9 @@ static int gfx_v9_0_rlc_init(struct amdgpu_device *adev)
 	if (adev->gfx.rlc.funcs->update_spm_vmid)
 		adev->gfx.rlc.funcs->update_spm_vmid(adev, 0xf);
 
+	/* init rlcg reg access ctrl */
+	gfx_v9_0_init_rlcg_reg_access_ctrl(adev);
+
 	return 0;
 }
 
@@ -2432,10 +2450,14 @@ static int gfx_v9_0_sw_init(void *handle)
 		return r;
 	}
 
-	r = adev->gfx.rlc.funcs->init(adev);
-	if (r) {
-		DRM_ERROR("Failed to init rlc BOs!\n");
-		return r;
+	if (adev->gfx.rlc.funcs) {
+		if (adev->gfx.rlc.funcs->init) {
+			r = adev->gfx.rlc.funcs->init(adev);
+			if (r) {
+				dev_err(adev->dev, "Failed to init rlc BOs!\n");
+				return r;
+			}
+		}
 	}
 
 	r = gfx_v9_0_mec_init(adev);