HME_XD_SETADDR
HME_XD_SETADDR(sc->sc_pci, hr->rb_txd, i, txbufdma + i * _HME_BUFSZ);
HME_XD_SETADDR(sc->sc_pci, hr->rb_rxd, i, rxbufdma + i * _HME_BUFSZ);