FORMG0ADDR
FORMG0ADDR(&cdb, blkno);
FORMG0ADDR(cdbp, addr);
FORMG0ADDR(cdbp, lba);
FORMG0ADDR(cdbp, lba);
FORMG0ADDR(&cdb, start_block);
FORMG0ADDR(((union scsi_cdb *)(pkt)->pkt_cdbp), (addr)), \
FORMG0ADDR(((union scsi_cdb *)(pktp)->pkt_cdbp), (addr)), \
FORMG0ADDR(((union scsi_cdb *)(pktp)->pkt_cdbp), (addr)), \
FORMG0ADDR(((union scsi_cdb *)(pktp)->pkt_cdbp), (addr)), \
FORMG0ADDR(&cdb, blk);