317 struct ttm_bo_driver {  struct
331 	struct ttm_tt *(*ttm_tt_create)(struct ttm_bo_device *bdev,
357 	 * struct ttm_bo_driver member invalidate_caches  argument
372 	 * struct ttm_bo_driver member evict_flags:  argument
384 	 * struct ttm_bo_driver member move:  argument
402 	 * struct ttm_bo_driver_member verify_access  argument
413 	int (*verify_access) (struct ttm_buffer_object *bo,
426 	bool (*sync_obj_signaled) (void *sync_obj, void *sync_arg);
427 	int (*sync_obj_wait) (void *sync_obj, void *sync_arg,
429 	int (*sync_obj_flush) (void *sync_obj, void *sync_arg);
430 	void (*sync_obj_unref) (void **sync_obj);
431 	void *(*sync_obj_ref) (void *sync_obj);
435 	void (*move_notify)(struct ttm_buffer_object *bo,
439 	int (*fault_reserve_notify)(struct ttm_buffer_object *bo);
444 	void (*swap_notify) (struct ttm_buffer_object *bo);
452 	int (*io_mem_reserve)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);
453 	void (*io_mem_free)(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem);