R128_PC_NGUI_CTLSTAT
reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT);
bus_space_write_4(sc->sc_memt, sc->sc_regh, R128_PC_NGUI_CTLSTAT, reg);
R128_PC_NGUI_CTLSTAT);