IntrControl
CSR_WRITE_4(sc, IntrControl, 0x08880000);
CSR_WRITE_4(sc, IntrControl, sc->sge_intrcontrol);
CSR_WRITE_4(sc, IntrControl, 0x8000);
CSR_READ_4(sc, IntrControl);
CSR_WRITE_4(sc, IntrControl, 0);