plum_intr_establish
void *plum_intr_establish(plum_chipset_tag_t, int, int, int, int (*)(void *),
sc->sc_ih = plum_intr_establish(pa->pa_pc, PLUM_INT_USB, IST_EDGE,
sc->sc_wakeih = plum_intr_establish(pa->pa_pc, PLUM_INT_USBWAKE,
plum_intr_establish(sc->sc_pc, ph->ph_plum_irq,
ih = plum_intr_establish(sc->sc_pc, irq, IST_EDGE, IPL_TTY,
sc->sc_ih = plum_intr_establish(sc->sc_pc, sc->sc_irq, type, level,