BMI_PORT_CFG_EN
bus_write_4(sc->sc_mem, FMBM_TCFG, reg & ~BMI_PORT_CFG_EN);
bus_write_4(sc->sc_mem, FMBM_RCFG, reg & ~BMI_PORT_CFG_EN);
bus_write_4(sc->sc_mem, FMBM_TCFG, reg | BMI_PORT_CFG_EN);
bus_write_4(sc->sc_mem, FMBM_RCFG, reg | BMI_PORT_CFG_EN);