CMDBLK_ORB_DATA_SIZE
pg_tbl_sz = CMDBLK_ORB_DATA_SIZE(be32_to_cpu(req->orb.misc)) *
data_size = CMDBLK_ORB_DATA_SIZE(be32_to_cpu(req->orb.misc));
num_pte = CMDBLK_ORB_DATA_SIZE(be32_to_cpu(req->orb.misc));