SCSI_REV_SPC
if (softc->scsi_rev >= SCSI_REV_SPC) {
cts->protocol_version = SCSI_REV_SPC;
cpi->protocol_version = SCSI_REV_SPC;
cpi->protocol_version = SCSI_REV_SPC;
cpi->protocol_version = SCSI_REV_SPC;