MACE_BUFLEN
DBDMA_BUILD(cmd, DBDMA_CMD_IN_LAST, 0, MACE_BUFLEN,
sc->sc_rxbuf_pa + MACE_BUFLEN * i, DBDMA_INT_ALWAYS,
sc->sc_rxbuf = sc->sc_txbuf + MACE_BUFLEN * MACE_TXBUFS;
sc->sc_rxbuf_pa = sc->sc_txbuf_pa + MACE_BUFLEN * MACE_TXBUFS;
#define MACE_BUFSZ ((MACE_RXBUFS + MACE_TXBUFS + 2) * MACE_BUFLEN)
offset = i * MACE_BUFLEN;