drm/amdgpu: move xgmi ras functions to xgmi_ras_funcs

xgmi ras is not managed by gpu driver when gpu is
connected to cpu through xgmi. move all xgmi ras
functions to xgmi_ras_funcs so gpu driver only
initializes xgmi ras functions when it manages
xgmi ras.

Signed-off-by: Hawking Zhang <[e-mail]>
Reviewed-by: Dennis Li <[e-mail]>
Reviewed-by: John Clements <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 			return r;
 	}
 
-	return amdgpu_xgmi_ras_late_init(adev);
+	if (!adev->gmc.xgmi.connected_to_cpu)
+		adev->gmc.xgmi.ras_funcs = &xgmi_ras_funcs;
+
+	if (adev->gmc.xgmi.ras_funcs &&
+	    adev->gmc.xgmi.ras_funcs->ras_late_init) {
+		r = adev->gmc.xgmi.ras_funcs->ras_late_init(adev);
+		if (r)
+			return r;
+	}
+
+	return 0;
 }
 
 void amdgpu_gmc_ras_fini(struct amdgpu_device *adev)
 {
 	amdgpu_umc_ras_fini(adev);
 	amdgpu_mmhub_ras_fini(adev);
-	amdgpu_xgmi_ras_fini(adev);
+	if (adev->gmc.xgmi.ras_funcs &&
+	    adev->gmc.xgmi.ras_funcs->ras_fini)
+		adev->gmc.xgmi.ras_funcs->ras_fini(adev);
 }
 
 	/*

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

···
 	unsigned int (*get_vbios_fb_size)(struct amdgpu_device *adev);
 };
 
+struct amdgpu_xgmi_ras_funcs {
+	int (*ras_late_init)(struct amdgpu_device *adev);
+	void (*ras_fini)(struct amdgpu_device *adev);
+	int (*query_ras_error_count)(struct amdgpu_device *adev,
+				     void *ras_error_status);
+	void (*reset_ras_error_count)(struct amdgpu_device *adev);
+};
+
 struct amdgpu_xgmi {
 	/* from psp */
 	u64 node_id;
···
 	struct ras_common_if *ras_if;
 	bool connected_to_cpu;
 	bool pending_reset;
+	const struct amdgpu_xgmi_ras_funcs *ras_funcs;
 };
 
 struct amdgpu_gmc {

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

···
 			adev->nbio.ras_funcs->query_ras_error_count(adev, &err_data);
 		break;
 	case AMDGPU_RAS_BLOCK__XGMI_WAFL:
-		amdgpu_xgmi_query_ras_error_count(adev, &err_data);
+		if (adev->gmc.xgmi.ras_funcs &&
+		    adev->gmc.xgmi.ras_funcs->query_ras_error_count)
+			adev->gmc.xgmi.ras_funcs->query_ras_error_count(adev, &err_data);
 		break;
 	default:
 		break;

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

···
 	return psp_xgmi_terminate(&adev->psp);
 }
 
-int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev)
+static int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev)
 {
 	int r;
 	struct ras_ih_if ih_info = {
···
 	    adev->gmc.xgmi.num_physical_nodes == 0)
 		return 0;
 
-	amdgpu_xgmi_reset_ras_error_count(adev);
+	adev->gmc.xgmi.ras_funcs->reset_ras_error_count(adev);
 
 	if (!adev->gmc.xgmi.ras_if) {
 		adev->gmc.xgmi.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
···
 	return r;
 }
 
-void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev)
+static void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev)
 {
 	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__XGMI_WAFL) &&
 			adev->gmc.xgmi.ras_if) {
···
 	WREG32_PCIE(pcs_status_reg, 0);
 }
 
-void amdgpu_xgmi_reset_ras_error_count(struct amdgpu_device *adev)
+static void amdgpu_xgmi_reset_ras_error_count(struct amdgpu_device *adev)
 {
 	uint32_t i;
 
···
 	return 0;
 }
 
-int amdgpu_xgmi_query_ras_error_count(struct amdgpu_device *adev,
-				      void *ras_error_status)
+static int amdgpu_xgmi_query_ras_error_count(struct amdgpu_device *adev,
+					     void *ras_error_status)
 {
 	struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
 	int i;
···
 		break;
 	}
 
-	amdgpu_xgmi_reset_ras_error_count(adev);
+	adev->gmc.xgmi.ras_funcs->reset_ras_error_count(adev);
 
 	err_data->ue_count += ue_cnt;
 	err_data->ce_count += ce_cnt;
 
 	return 0;
 }
+
+const struct amdgpu_xgmi_ras_funcs xgmi_ras_funcs = {
+	.ras_late_init = amdgpu_xgmi_ras_late_init,
+	.ras_fini = amdgpu_xgmi_ras_fini,
+	.query_ras_error_count = amdgpu_xgmi_query_ras_error_count,
+	.reset_ras_error_count = amdgpu_xgmi_reset_ras_error_count,
+};

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

···
 	uint32_t pcs_err_shift;
 };
 
+extern const struct amdgpu_xgmi_ras_funcs xgmi_ras_funcs;
 struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev);
 void amdgpu_put_xgmi_hive(struct amdgpu_hive_info *hive);
 int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev);
···
 int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate);
 int amdgpu_xgmi_get_hops_count(struct amdgpu_device *adev,
 		struct amdgpu_device *peer_adev);
-int amdgpu_xgmi_ras_late_init(struct amdgpu_device *adev);
-void amdgpu_xgmi_ras_fini(struct amdgpu_device *adev);
 uint64_t amdgpu_xgmi_get_relative_phy_addr(struct amdgpu_device *adev,
 					   uint64_t addr);
-int amdgpu_xgmi_query_ras_error_count(struct amdgpu_device *adev,
-				      void *ras_error_status);
-void amdgpu_xgmi_reset_ras_error_count(struct amdgpu_device *adev);
-
 static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
 		struct amdgpu_device *bo_adev)
 {

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

···
 		adev->gmc.xgmi.supported = true;
 		adev->gmc.xgmi.connected_to_cpu =
 			adev->smuio.funcs->is_host_gpu_xgmi_supported(adev);
-        }
+	}
 
 	adev->gmc.shared_aperture_start = 0x2000000000000000ULL;
 	adev->gmc.shared_aperture_end =