RTW_FEMR
RTW_WRITE(regs, RTW_FEMR, RTW_FEMR_INTR);
RTW_WRITE(&sc->sc_regs, RTW_FEMR, RTW_FEMR_INTR);
RTW_WRITE(&sc->sc_regs, RTW_FEMR,
RTW_READ(&sc->sc_regs, RTW_FEMR) & ~RTW_FEMR_INTR);
RTW_WRITE(regs, RTW_FEMR, 0xffff);
RTW_SYNC(regs, RTW_FEMR, RTW_FEMR);