435 static int scsiback_gnttab_data_map(struct vscsiif_request *ring_req,  in scsiback_gnttab_data_map()  argument
443 	unsigned int nr_segments = (unsigned int)ring_req->nr_segments;  in scsiback_gnttab_data_map()
458 			ring_req->nr_segments);  in scsiback_gnttab_data_map()
462 	if (ring_req->nr_segments & VSCSIIF_SG_GRANT) {  in scsiback_gnttab_data_map()
463 		err = scsiback_gnttab_data_map_list(pending_req, ring_req->seg,  in scsiback_gnttab_data_map()
471 			n_segs = ring_req->seg[i].length /  in scsiback_gnttab_data_map()
473 			if ((unsigned)ring_req->seg[i].offset +  in scsiback_gnttab_data_map()
474 			    (unsigned)ring_req->seg[i].length > PAGE_SIZE ||  in scsiback_gnttab_data_map()
476 			    ring_req->seg[i].length)  in scsiback_gnttab_data_map()
502 		seg = ring_req->seg;  in scsiback_gnttab_data_map()
510 			      vaddr(pending_req, i) + ring_req->seg[i].offset);  in scsiback_gnttab_data_map()
511 			n_segs = ring_req->seg[i].length /  in scsiback_gnttab_data_map()
520 		end_seg = vaddr(pending_req, 0) + ring_req->seg[0].offset;  in scsiback_gnttab_data_map()
522 		end_seg += ring_req->seg[0].length;  in scsiback_gnttab_data_map()
533 				  ring_req->seg[i_seg].offset;  in scsiback_gnttab_data_map()
535 			end_seg += ring_req->seg[i_seg].length;  in scsiback_gnttab_data_map()
641 				struct vscsiif_request *ring_req)  in prepare_pending_reqs()  argument
648 	if ((ring_req->sc_data_direction != DMA_BIDIRECTIONAL) &&  in prepare_pending_reqs()
649 		(ring_req->sc_data_direction != DMA_TO_DEVICE) &&  in prepare_pending_reqs()
650 		(ring_req->sc_data_direction != DMA_FROM_DEVICE) &&  in prepare_pending_reqs()
651 		(ring_req->sc_data_direction != DMA_NONE)) {  in prepare_pending_reqs()
653 			ring_req->sc_data_direction);  in prepare_pending_reqs()
656 	if (ring_req->cmd_len > VSCSIIF_MAX_COMMAND_SIZE) {  in prepare_pending_reqs()
658 			ring_req->cmd_len);  in prepare_pending_reqs()
662 	vir.chn = ring_req->channel;  in prepare_pending_reqs()
663 	vir.tgt = ring_req->id;  in prepare_pending_reqs()
664 	vir.lun = ring_req->lun;  in prepare_pending_reqs()
678 	pending_req->rqid = ring_req->rqid;  in prepare_pending_reqs()
681 	pending_req->sc_data_direction = ring_req->sc_data_direction;  in prepare_pending_reqs()
682 	pending_req->cmd_len = ring_req->cmd_len;  in prepare_pending_reqs()
683 	memcpy(pending_req->cmnd, ring_req->cmnd, pending_req->cmd_len);  in prepare_pending_reqs()
692 	struct vscsiif_request ring_req;  in scsiback_do_cmd_fn()  local
715 		RING_COPY_REQUEST(ring, rc, &ring_req);  in scsiback_do_cmd_fn()
718 		pending_req = prepare_pending_reqs(info, ring, &ring_req);  in scsiback_do_cmd_fn()
729 					       ring_req.rqid);  in scsiback_do_cmd_fn()
733 		switch (ring_req.act) {  in scsiback_do_cmd_fn()
735 			if (scsiback_gnttab_data_map(&ring_req, pending_req)) {  in scsiback_do_cmd_fn()
746 				ring_req.ref_rqid);  in scsiback_do_cmd_fn()