FDIR_WRITE
result = ene_send_scsi_cmd(us, FDIR_WRITE, buf, 0);
result = ene_send_scsi_cmd(us, FDIR_WRITE, scsi_sglist(srb), 1);
result = ene_send_scsi_cmd(us, FDIR_WRITE, buf, 0);
result = ene_send_scsi_cmd(us, FDIR_WRITE, scsi_sglist(srb), 1);