DESC_BUFADDR
PUTDESC32(reqp, chain_kaddr, DESC_BUFADDR, c.dmac_address);
PUTDESC32(reqp, kaddr, DESC_BUFADDR,
PUTDESC32(reqp, kaddr, DESC_BUFADDR, reqp->dr_ibuf_paddr + SHA1LEN);
PUTDESC32(reqp, kaddr, DESC_BUFADDR, reqp->dr_ibuf_paddr +