WCR
if (bus_space_read_2(sc->sc_iot, sc->sc_ioh, WCR) & WCR_WDE)
bus_space_write_2(sc->sc_iot, sc->sc_ioh, WCR, 0);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, WCR, 1);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, WCR, 1);
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, WCR);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, WCR, reg);