SAIPIC_MR
bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_MR, 0);
write_icu(SAIPIC_MR, 0);
write_icu(SAIPIC_MR,
read_icu(SAIPIC_MR) & ~(1U<<irqno));
write_icu(SAIPIC_MR, pxa2x0_imask[curcpu()->ci_cpl]);
write_icu(SAIPIC_MR, intr_mask);
bus_space_read_4(psc->saip.sc_iot, psc->saip.sc_ioh, SAIPIC_MR ),