becc_intr_establish
sc->sc_ih = becc_intr_establish(ICU_PUSHBUTTON, IPL_TTY,
return (becc_intr_establish(ih, ipl, func, arg));
clock_ih = becc_intr_establish(ICU_TIMERA, IPL_CLOCK,
becc_intr_establish(ICU_SOFT, IPL_SOFTCLOCK, becc_softint, NULL);
void *becc_intr_establish(int, int, int (*)(void *), void *);
osc->sc_ih = becc_intr_establish(oba->oba_irq, IPL_SERIAL,