RX_DESC_SIZE
error = bus_dmamap_create(sc->dmat, RX_DESC_SIZE, 1, RX_DESC_SIZE, 0,
error = bus_dmamem_alloc(sc->dmat, RX_DESC_SIZE, DESC_ALIGN, 0,
RX_DESC_SIZE, (void *)&sc->rx.desc_ring,
RX_DESC_SIZE, NULL, BUS_DMA_WAITOK);
memset(sc->rx.desc_ring, 0, RX_DESC_SIZE);
error = bus_dmamap_create(sc->sc_dmat, RX_DESC_SIZE, 1, RX_DESC_SIZE,
error = bus_dmamem_alloc(sc->sc_dmat, RX_DESC_SIZE, DESC_ALIGN,
RX_DESC_SIZE, (void *)&sc->sc_rx.desc_ring,
sc->sc_rx.desc_ring, RX_DESC_SIZE, NULL, BUS_DMA_WAITOK);
memset(sc->sc_rx.desc_ring, 0, RX_DESC_SIZE);