vmm/io/vatpic.c

77 	int		acnt[8];	/* sum of pin asserts and deasserts */
113 static void vatpic_set_pinstate(struct vatpic *vatpic, int pin, bool newstate);
128 	int bit, pin;
131 	ATPIC_PIN_FOREACH(pin, atpic, i) {
132                 bit = (1 << pin);
142 				return (pin);
153 	int bit, pin, tmp;
173 	ATPIC_PIN_FOREACH(pin, atpic, tmp) {
174 		bit = 1 << pin;
185 		 * the corresponding 'pin' to the caller.
188 			return (pin);
198 	int pin;
207 	    (pin = vatpic_get_highest_irrpin(atpic)) != -1) {
208 		VATPIC_CTR4(vatpic, "atpic slave notify pin = %d "
209 		    "(imr 0x%x irr 0x%x isr 0x%x)", pin,
229 	    (pin = vatpic_get_highest_irrpin(atpic)) != -1) {
230 		VATPIC_CTR4(vatpic, "atpic master notify pin = %d "
231 		    "(imr 0x%x irr 0x%x isr 0x%x)", pin,
415 vatpic_set_pinstate(struct vatpic *vatpic, int pin, bool newstate)
421 	KASSERT(pin >= 0 && pin < 16,
422 	    ("vatpic_set_pinstate: invalid pin number %d", pin));
426 	atpic = &vatpic->atpic[pin >> 3];
428 	oldcnt = atpic->acnt[pin & 0x7];
430 		atpic->acnt[pin & 0x7]++;
432 		atpic->acnt[pin & 0x7]--;
433 	newcnt = atpic->acnt[pin & 0x7];
436 		VATPIC_CTR2(vatpic, "atpic pin%d: bad acnt %d", pin, newcnt);
439 	level = ((vatpic->elc[pin >> 3] & (1 << (pin & 0x7))) != 0);
443 		VATPIC_CTR1(vatpic, "atpic pin%d: asserted", pin);
444 		atpic->request |= (1 << (pin & 0x7));
447 		VATPIC_CTR1(vatpic, "atpic pin%d: deasserted", pin);
449 			atpic->request &= ~(1 << (pin & 0x7));
451 		VATPIC_CTR3(vatpic, "atpic pin%d: %s, ignored, acnt %d",
452 		    pin, newstate ? "asserted" : "deasserted", newcnt);
553 	int pin;
561 	pin = vatpic_get_highest_irrpin(atpic);
562 	if (pin == 2) {
564 		pin = vatpic_get_highest_irrpin(atpic);
571 	if (pin == -1)
572 		pin = 7;
574 	KASSERT(pin >= 0 && pin <= 7, ("%s: invalid pin %d", __func__, pin));
575 	*vecptr = atpic->irq_base + pin;
581 vatpic_pin_accepted(struct atpic *atpic, int pin)
585 	if (atpic->acnt[pin] == 0)
586 		atpic->request &= ~(1 << pin);
590 			atpic->lowprio = pin;
592 		atpic->service |= (1 << pin);
600 	int pin;
606 	pin = vector & 0x7;
609 		vatpic_pin_accepted(&vatpic->atpic[1], pin);
616 		vatpic_pin_accepted(&vatpic->atpic[0], pin);
628 	int pin;
634 		pin = vatpic_get_highest_irrpin(atpic);
635 		if (pin >= 0) {
636 			vatpic_pin_accepted(atpic, pin);
637 			*eax = 0x80 | pin;