SCTL
bus_space_write_1(iot, ioh, SCTL,
bus_space_read_1(iot, ioh, SCTL) & ~SCTL_INTR_ENAB);
bus_space_write_1(iot, ioh, SCTL,
bus_space_read_1(iot, ioh, SCTL) | SCTL_INTR_ENAB);
bus_space_read_1(iot, ioh, SCTL),
bus_space_write_1(iot, ioh, SCTL, SCTL_DISABLE | SCTL_CTRLRST);
bus_space_write_1(iot, ioh, SCTL,
bus_space_write_1(iot, ioh, SCTL,
bus_space_read_1(iot, ioh, SCTL) & ~SCTL_DISABLE);
bus_space_write_1(sc->sc_iot, sc->sc_ioh, SCTL,
bus_space_read_1(sc->sc_iot, sc->sc_ioh, SCTL) | SCTL_INTR_ENAB);
E1000_WRITE_REG(hw, SCTL, E1000_DISABLE_SERDES_LOOPBACK);