ETIME_M_REG_W
timeh = (timeh << 16) | bus_space_read_2(iot, ioh, ETIME_M_REG_W);
bus_space_write_2(iot, ioh, ETIME_M_REG_W, timeh & 0xffff);
timel = bus_space_read_2(sc->sc_iot, sc->sc_ioh, ETIME_M_REG_W);