ETNA_INT_MASK
x = bus_space_read_1(aa->iot, ioh, ETNA_INT_MASK);
bus_space_write_1(aa->iot, ioh, ETNA_INT_MASK, (~x & 0xff) | INT_RESV);
if (bus_space_read_1(aa->iot, ioh, ETNA_INT_MASK) !=
bus_space_write_1(aa->iot, ioh, ETNA_INT_MASK, x);
bus_space_write_1(aa->iot, ioh, ETNA_INT_MASK, x);
if (bus_space_read_1(aa->iot, ioh, ETNA_INT_MASK) != x)
bus_space_write_1(sc->sc_iot, sc->sc_ioh, ETNA_INT_MASK, INT_CARD);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, ETNA_INT_MASK, 0x00);