DP_INTR_STATUS
status = bus_space_read_4(sc->sc_iot, sc->sc_ahb_ioh, DP_INTR_STATUS);
bus_space_write_4(sc->sc_iot, sc->sc_ahb_ioh, DP_INTR_STATUS,
DP_INTR_STATUS);
bus_space_write_4(sc->sc_iot, sc->sc_ahb_ioh, DP_INTR_STATUS,
bus_space_write_4(sc->sc_iot, sc->sc_ahb_ioh, DP_INTR_STATUS,