i386/pci/pci_pir.c

56 struct pci_link {
57 	TAILQ_ENTRY(pci_link) pl_links;
66 	struct pci_link	**pci_link_ptr;
85 static int	pci_pir_choose_irq(struct pci_link *pci_link, int irqmask);
89 static struct pci_link *pci_pir_find_link(uint8_t link_id);
96 static int	pci_pir_valid_irq(struct pci_link *pci_link, int irq);
104 static TAILQ_HEAD(, pci_link) pci_links;
170  * Find the pci_link structure for a given link ID.
172 static struct pci_link *
175 	struct pci_link *pci_link;
177 	TAILQ_FOREACH(pci_link, &pci_links, pl_links) {
178 		if (pci_link->pl_id == link_id)
179 			return (pci_link);
204 pci_pir_valid_irq(struct pci_link *pci_link, int irq)
209 	return (pci_link->pl_irqmask & (1 << irq));
237 	struct pci_link *pci_link;
239 	pci_link = pci_pir_find_link(intpin->link);
240 	if (pci_link != NULL) {
241 		pci_link->pl_references++;
242 		if (intpin->irqs != pci_link->pl_irqmask) {
248 				    pci_link->pl_id);
249 			pci_link->pl_irqmask &= intpin->irqs;
252 		pci_link = malloc(sizeof(struct pci_link), M_PIR, M_WAITOK);
253 		pci_link->pl_id = intpin->link;
254 		pci_link->pl_irqmask = intpin->irqs;
255 		pci_link->pl_irq = PCI_INVALID_IRQ;
256 		pci_link->pl_references = 1;
257 		pci_link->pl_routed = 0;
258 		TAILQ_INSERT_TAIL(&pci_links, pci_link, pl_links);
313 	struct pci_link *pci_link;
317 	pci_link = pci_pir_find_link(intpin->link);
319 	if (irq == PCI_INVALID_IRQ || irq == pci_link->pl_irq)
327 		    pci_link->pl_id);
335 	if (pci_link->pl_irq == PCI_INVALID_IRQ) {
336 		if (!pci_pir_valid_irq(pci_link, irq))
340 			    pci_link->pl_id);
341 		pci_link->pl_irq = irq;
342 		pci_link->pl_routed = 1;
355 	if (!pci_pir_valid_irq(pci_link, irq)) {
359 		    pci_link->pl_id);
360 	} else if (!pci_pir_valid_irq(pci_link, pci_link->pl_irq)) {
364 		    pci_link->pl_id, pci_link->pl_irq);
365 		pci_link->pl_irq = irq;
366 		pci_link->pl_routed = 1;
371 		    pci_link->pl_id, pci_link->pl_irq);
384 	struct pci_link *pci_link;
417 	TAILQ_FOREACH(pci_link, &pci_links, pl_links) {
419 		    "hw.pci.link.%#x.irq", pci_link->pl_id);
425 		    !pci_pir_valid_irq(pci_link, irq) && bootverbose)
428 			    irq, pci_link->pl_id);
429 		pci_link->pl_routed = 0;
430 		pci_link->pl_irq = irq;
442 	TAILQ_FOREACH(pci_link, &pci_links, pl_links) {
443 		if (!PCI_INTERRUPT_VALID(pci_link->pl_irq))
445 		pir_bios_irqs |= 1 << pci_link->pl_irq;
446 		pir_interrupt_weight[pci_link->pl_irq] +=
447 		    pci_link->pl_references;
492 	struct pci_link *pci_link;
499 	pci_link = NULL;
503 	lookup.pci_link_ptr = &pci_link;
505 	if (pci_link == NULL) {
520 	if (!PCI_INTERRUPT_VALID(pci_link->pl_irq)) {
521 		if (pci_link->pl_irqmask != 0 && powerof2(pci_link->pl_irqmask))
522 			irq = ffs(pci_link->pl_irqmask) - 1;
524 			irq = pci_pir_choose_irq(pci_link,
527 			irq = pci_pir_choose_irq(pci_link, pir_bios_irqs);
529 			irq = pci_pir_choose_irq(pci_link,
538 		pci_link->pl_irq = irq;
542 	if (!pci_link->pl_routed) {
544 		    pci_link->pl_irq);
547 		if (error && !powerof2(pci_link->pl_irqmask)) {
551 		pci_link->pl_routed = 1;
555 		BUS_CONFIG_INTR(pir_device, pci_link->pl_irq,
560 		    pin - 1 + 'A', pci_link->pl_irq);
561 	return (pci_link->pl_irq);
569 pci_pir_choose_irq(struct pci_link *pci_link, int irqmask)
574 	realmask = pci_link->pl_irqmask & irqmask;
589 		    pci_link->pl_id);
622 	struct pci_link *pci_link;
625 	TAILQ_FOREACH(pci_link, &pci_links, pl_links) {
626 		printf("%#4x  %3d   %c   %3d  ", pci_link->pl_id,
627 		    pci_link->pl_irq, pci_link->pl_routed ? 'Y' : 'N',
628 		    pci_link->pl_references);
629 		pci_print_irqmask(pci_link->pl_irqmask);
696 	struct pci_link *pci_link;
700 	TAILQ_FOREACH(pci_link, &pci_links, pl_links) {
701 		if (!PCI_INTERRUPT_VALID(pci_link->pl_irq)) {
702 			KASSERT(!pci_link->pl_routed,
704 			    pci_link->pl_id));
707 		if (pci_link->pl_routed) {
709 			pd.link = pci_link->pl_id;
713 			    pci_link->pl_id));
718 				    pci_link->pl_id, pci_link->pl_irq);
720 			    pci_link->pl_irq);
724 				    pci_link->pl_id);