+static void virtio_scsi_init_hdr(struct virtio_scsi_cmd_req *cmd,
+ struct scsi_cmnd *sc)
+{
+ cmd->lun[0] = 1;
+ cmd->lun[1] = sc->device->id;
+ cmd->lun[2] = (sc->device->lun >> 8) | 0x40;
+ cmd->lun[3] = sc->device->lun & 0xff;
+ cmd->tag = (unsigned long)sc;
+ cmd->task_attr = VIRTIO_SCSI_S_SIMPLE;
+ cmd->prio = 0;
+ cmd->crn = 0;
+}
+
+static void virtio_scsi_init_hdr_pi(struct virtio_scsi_cmd_req_pi *cmd_pi,
+ struct scsi_cmnd *sc)
+{
+ struct request *rq = sc->request;
+ struct blk_integrity *bi;
+
+ virtio_scsi_init_hdr((struct virtio_scsi_cmd_req *)cmd_pi, sc);
+
+ if (!rq || !scsi_prot_sg_count(sc))
+ return;
+
+ bi = blk_get_integrity(rq->rq_disk);
+
+ if (sc->sc_data_direction == DMA_TO_DEVICE)
+ cmd_pi->pi_bytesout = blk_rq_sectors(rq) * bi->tuple_size;
+ else if (sc->sc_data_direction == DMA_FROM_DEVICE)
+ cmd_pi->pi_bytesin = blk_rq_sectors(rq) * bi->tuple_size;
+}
+