CAS_MAC_RX_CONFIG
v = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG);
bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, v);
bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_CONFIG)));
rxcfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG);
bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, rxcfg);
cfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG);
bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, cfg);
return (cas_bitwait(sc, h, CAS_MAC_RX_CONFIG, CAS_MAC_RX_ENABLE, 0));