void
vmeintr_disestablish(u_int vec, struct intrhand *ih)
{
struct intrhand *intr;
intrhand_t *list;
list = &vmeintr_handlers[vec];
evcount_detach(&ih->ih_count);
SLIST_REMOVE(list, ih, intrhand, ih_link);
if (!SLIST_EMPTY(list))
return;
/*
* Walk the interrupts table to check if this level needs
* to be disabled.
*/
for (vec = 0; vec < NVMEINTR; vec++) {
intr = SLIST_FIRST(&vmeintr_handlers[vec]);
if (intr != NULL && intr->ih_ipl == ih->ih_ipl)
break;
}
if (vec == NVMEINTR)
intsrc_disable(INTSRC_VME(ih->ih_ipl));
}
/*
* Unregister a C-bus interrupt service routine.
*/
int
cbus_isrunlink(int (*func)(void *), int intlevel)
{
struct cbus_softc *sc = NULL;
struct cbus_isr_t *ci;
if (cbus_cd.cd_ndevs != 0)
sc = cbus_cd.cd_devs[0];
if (sc == NULL)
panic("cbus_isrunlink: can't find cbus_softc");
#ifdef DIAGNOSTIC
if (intlevel < 0 || intlevel >= NCBUSISR) {
printf("cbus_isrunlink: bad INT level %d\n", intlevel);
return -1;
}
#endif
ci = &sc->cbus_isr[intlevel];
if (ci->isr_func == NULL) {
printf("cbus_isrunlink: isr not assigned on INT%d\n", intlevel);
return -1;
}
/* reset the entry */
ci->isr_func = NULL;
ci->isr_arg = NULL;
ci->isr_intlevel = ci->isr_ipl = -1;
evcount_detach(&ci->isr_count);
sc->registered &= ~(1 << (6 - intlevel));
/* clear interrupt flags */
*cbus_isreg = (u_int8_t)(6 - intlevel);
#ifdef CBUS_DEBUG
printf("cbus_isrunlink: sc->registered = 0x%02x\n", sc->registered);
#endif
return 0;
}
void
omgpio_intr_disestablish(void *cookie)
{
int psw;
struct intrhand *ih = cookie;
struct omgpio_softc *sc = omgpio_cd.cd_devs[GPIO_PIN_TO_INST(ih->ih_gpio)];
int gpio = ih->ih_gpio;
psw = disable_interrupts(I32_bit);
ih = sc->sc_handlers[GPIO_PIN_TO_OFFSET(gpio)];
sc->sc_handlers[GPIO_PIN_TO_OFFSET(gpio)] = NULL;
evcount_detach(&ih->ih_count);
free(ih, M_DEVBUF);
omgpio_intr_level(gpio, IST_NONE);
omgpio_intr_mask(gpio);
omgpio_clear_intr(gpio); /* Just in case */
omgpio_recalc_interrupts(sc);
restore_interrupts(psw);
}