167  * Computes the required size for a surface dma command for backup or
443  * vmw_legacy_srf_dma - Copy backup data to or from a legacy surface.
448  *                  information about the backup buffer.
451  * Transfer backup data to or from a legacy surface as part of the
454  * The backup buffer will be fenced or idle upon successful completion,
455  * and if the surface needs persistent backup storage, the backup buffer
483 	 * Create a fence object and fence the backup buffer.  in vmw_legacy_srf_dma()
504  *                  information about the backup buffer.
506  * This function will copy backup data to the surface if the
507  * backup buffer is dirty.
526  *                  information about the backup buffer.
528  * This function will copy backup data from the surface.
861 	 * expect a backup buffer to be present.  in vmw_surface_define_ioctl()
870 					&res->backup,  in vmw_surface_define_ioctl()
1253 	 * Create a fence object and fence the backup buffer.  in vmw_gb_surface_unbind()
1649 					 &res->backup,  in vmw_gb_surface_define_internal()
1652 			if (res->backup->base.num_pages * PAGE_SIZE <  in vmw_gb_surface_define_internal()
1654 				DRM_ERROR("Surface backup buffer too small.\n");  in vmw_gb_surface_define_internal()
1655 				vmw_bo_unreference(&res->backup);  in vmw_gb_surface_define_internal()
1669 					&res->backup,  in vmw_gb_surface_define_internal()
1692 	if (res->backup) {  in vmw_gb_surface_define_internal()
1694 			drm_vma_node_offset_addr(&res->backup->base.vma_node);  in vmw_gb_surface_define_internal()
1695 		rep->buffer_size = res->backup->base.num_pages * PAGE_SIZE;  in vmw_gb_surface_define_internal()
1740 	if (!srf->res.backup) {  in vmw_gb_surface_reference_internal()
1741 		DRM_ERROR("Shared GB surface is missing a backup buffer.\n");  in vmw_gb_surface_reference_internal()
1745 	mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */  in vmw_gb_surface_reference_internal()
1746 	ret = vmw_user_bo_reference(tfile, srf->res.backup, &backup_handle);  in vmw_gb_surface_reference_internal()
1751 			  "backup buffer.\n");  in vmw_gb_surface_reference_internal()
1770 		drm_vma_node_offset_addr(&srf->res.backup->base.vma_node);  in vmw_gb_surface_reference_internal()
1771 	rep->crep.buffer_size = srf->res.backup->base.num_pages * PAGE_SIZE;  in vmw_gb_surface_reference_internal()