80 	if (res->backup) {  in vmw_resource_release()
81 		struct ttm_buffer_object *bo = &res->backup->base;  in vmw_resource_release()
95 		vmw_bo_unreference(&res->backup);  in vmw_resource_release()
180 	res->backup = NULL;  in vmw_resource_init()
295  * vmw_resource_buf_alloc - Allocate a backup buffer for a resource.
297  * @res:            The resource for which to allocate a backup buffer.
306 	struct vmw_buffer_object *backup;  in vmw_resource_buf_alloc()  local
309 	if (likely(res->backup)) {  in vmw_resource_buf_alloc()
310 		BUG_ON(res->backup->base.num_pages * PAGE_SIZE < size);  in vmw_resource_buf_alloc()
314 	backup = kzalloc(sizeof(*backup), GFP_KERNEL);  in vmw_resource_buf_alloc()
315 	if (unlikely(!backup))  in vmw_resource_buf_alloc()
318 	ret = vmw_bo_init(res->dev_priv, backup, res->backup_size,  in vmw_resource_buf_alloc()
325 	res->backup = backup;  in vmw_resource_buf_alloc()
337  *                  containing backup data if a bind operation is needed.
362 			list_add_tail(&res->mob_head, &res->backup->res_list);  in vmw_resource_do_validate()
368 	 * backup buffers have been unreserved. Otherwise  in vmw_resource_do_validate()
386  * @switch_backup:     Backup buffer has been switched.
387  * @new_backup:        Pointer to new backup buffer if command submission
389  * @new_backup_offset: New backup offset if @switch_backup is true.
404 	if (switch_backup && new_backup != res->backup) {  in vmw_resource_unreserve()
405 		if (res->backup) {  in vmw_resource_unreserve()
406 			lockdep_assert_held(&res->backup->base.resv->lock.base);  in vmw_resource_unreserve()
408 			vmw_bo_unreference(&res->backup);  in vmw_resource_unreserve()
412 			res->backup = vmw_bo_reference(new_backup);  in vmw_resource_unreserve()
416 			res->backup = NULL;  in vmw_resource_unreserve()
432  * vmw_resource_check_buffer - Check whether a backup buffer is needed
437  * @res:            The resource for which to allocate a backup buffer.
441  *                  reserved and validated backup buffer.
454 	if (unlikely(res->backup == NULL)) {  in vmw_resource_check_buffer()
461 	val_buf->bo = ttm_bo_reference(&res->backup->base);  in vmw_resource_check_buffer()
472 	ret = ttm_bo_validate(&res->backup->base,  in vmw_resource_check_buffer()
486 		vmw_bo_unreference(&res->backup);  in vmw_resource_check_buffer()
497  * a backup buffer is present for guest-backed resources. However,
511 	if (res->func->needs_backup && res->backup == NULL &&  in vmw_resource_reserve()
515 			DRM_ERROR("Failed to allocate a backup buffer "  in vmw_resource_reserve()
527  *                                    backup buffer
530  * @val_buf:        Backup buffer information.
549  *                         to a backup buffer.
593  * On succesful return, any backup DMA buffer pointed to by @res->backup will
612 	if (res->backup)  in vmw_resource_validate()
613 		val_buf.bo = &res->backup->base;  in vmw_resource_validate()
635 		/* Trylock backup buffers with a NULL ticket. */  in vmw_resource_validate()
653 	else if (!res->func->needs_backup && res->backup) {  in vmw_resource_validate()
655 		vmw_bo_unreference(&res->backup);  in vmw_resource_validate()
670  * Evicts the Guest Backed hardware resource if the backup
674  * both require the backup buffer to be reserved.
794  * vmw_resource_needs_backup - Return whether a resource needs a backup buffer.
833 		/* Wait lock backup buffers with a ticket. */  in vmw_resource_evict_type()
899 		if (res->backup) {  in vmw_resource_pin()
900 			vbo = res->backup;  in vmw_resource_pin()
954 	if (--res->pin_count == 0 && res->backup) {  in vmw_resource_unpin()
955 		struct vmw_buffer_object *vbo = res->backup;  in vmw_resource_unpin()