fwdma_v_addr
fp = (struct fw_pkt *)fwdma_v_addr(ir->buf,
fp = (struct fw_pkt *)fwdma_v_addr(it->buf,
db_tr->db = (struct fwohcidb *)fwdma_v_addr(dbch->am, idb);
db_tr->buf = fwdma_v_addr(it->buf, poffset);
db_tr->buf = fwdma_v_addr(rq->buf, poffset);