IPW_RBD_SZ
error = bus_dmamap_create(sc->sc_dmat, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0,
error = bus_dmamem_alloc(sc->sc_dmat, IPW_RBD_SZ, PAGE_SIZE, 0,
error = bus_dmamem_map(sc->sc_dmat, &sc->rbd_seg, nsegs, IPW_RBD_SZ,
IPW_RBD_SZ, NULL, BUS_DMA_NOWAIT);
bus_dmamap_sync(sc->sc_dmat, sc->rbd_map, 0, IPW_RBD_SZ,
IPW_RBD_SZ);
IPW_RBD_SZ);