kernel/irq/irqdomain.c

32 static void irq_domain_free_one_irq(struct irq_domain *domain, unsigned int virq);
355  * static virq assignments (non-DT boot) then it will set that up correctly.
548 		 "virq%i doesn't exist; cannot disassociate\n", irq))
578 static int irq_domain_associate_locked(struct irq_domain *domain, unsigned int virq,
581 	struct irq_data *irq_data = irq_get_irq_data(virq);
587 	if (WARN(!irq_data, "error: virq%i is not allocated", virq))
589 	if (WARN(irq_data->domain, "error: virq%i is already associated", virq))
595 		ret = domain->ops->map(domain, virq, hwirq);
604 				       domain->name, hwirq, virq, ret);
615 	irq_clear_status_flags(virq, IRQ_NOREQUEST);
620 int irq_domain_associate(struct irq_domain *domain, unsigned int virq,
626 	ret = irq_domain_associate_locked(domain, virq, hwirq);
662 	unsigned int virq;
668 	virq = irq_alloc_desc_from(1, of_node_to_nid(of_node));
669 	if (!virq) {
670 		pr_debug("create_direct virq allocation failed\n");
673 	if (virq >= domain->hwirq_max) {
676 		irq_free_desc(virq);
679 	pr_debug("create_direct obtained virq %d\n", virq);
681 	if (irq_domain_associate(domain, virq, virq)) {
682 		irq_free_desc(virq);
686 	return virq;
696 	int virq;
701 	virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node),
703 	if (virq <= 0) {
704 		pr_debug("-> virq allocation failed\n");
708 	if (irq_domain_associate_locked(domain, virq, hwirq)) {
709 		irq_free_desc(virq);
714 		hwirq, of_node_full_name(of_node), virq);
716 	return virq;
734 	int virq;
747 	virq = irq_find_mapping(domain, hwirq);
748 	if (virq) {
749 		pr_debug("existing mapping on virq %d\n", virq);
753 	virq = irq_create_mapping_affinity_locked(domain, hwirq, affinity);
757 	return virq;
798 	int virq;
830 	virq = irq_find_mapping(domain, hwirq);
831 	if (virq) {
837 		if (type == IRQ_TYPE_NONE || type == irq_get_trigger_type(virq))
844 		if (irq_get_trigger_type(virq) == IRQ_TYPE_NONE) {
845 			irq_data = irq_get_irq_data(virq);
847 				virq = 0;
857 		virq = 0;
864 			virq = msi_device_domain_alloc_wired(domain, hwirq, type);
867 			virq = irq_domain_alloc_irqs_locked(domain, -1, 1, NUMA_NO_NODE,
869 		if (virq <= 0) {
870 			virq = 0;
875 		virq = irq_create_mapping_affinity_locked(domain, hwirq, NULL);
876 		if (!virq)
880 	irq_data = irq_get_irq_data(virq);
882 		virq = 0;
891 	return virq;
908  * @virq: linux irq number of the interrupt to unmap
910 void irq_dispose_mapping(unsigned int virq)
915 	irq_data = virq ? irq_get_irq_data(virq) : NULL;
924 		irq_domain_free_one_irq(domain, virq);
926 		irq_domain_disassociate(domain, virq);
927 		irq_free_desc(virq);
1089 int irq_domain_alloc_descs(int virq, unsigned int cnt, irq_hw_number_t hwirq,
1094 	if (virq >= 0) {
1095 		virq = __irq_alloc_descs(virq, virq, cnt, node, THIS_MODULE,
1101 		virq = __irq_alloc_descs(-1, hint, cnt, node, THIS_MODULE,
1103 		if (virq <= 0 && hint > 1) {
1104 			virq = __irq_alloc_descs(-1, 1, cnt, node, THIS_MODULE,
1109 	return virq;
1167 static void irq_domain_insert_irq(int virq)
1171 	for (data = irq_get_irq_data(virq); data; data = data->parent_data) {
1178 	irq_clear_status_flags(virq, IRQ_NOREQUEST);
1181 static void irq_domain_remove_irq(int virq)
1185 	irq_set_status_flags(virq, IRQ_NOREQUEST);
1186 	irq_set_chip_and_handler(virq, NULL, NULL);
1187 	synchronize_irq(virq);
1190 	for (data = irq_get_irq_data(virq); data; data = data->parent_data) {
1227 static void irq_domain_free_irq_data(unsigned int virq, unsigned int nr_irqs)
1233 		irq_data = irq_get_irq_data(virq + i);
1245  * @virq:	IRQ number where the hierarchy is to be trimmed
1247  * Marks the @virq level belonging to @domain as disconnected.
1248  * Returns -EINVAL if @virq doesn't have a valid irq_data pointing
1256 				    unsigned int virq)
1260 	irqd = irq_domain_get_irq_data(domain, virq);
1269 static int irq_domain_trim_hierarchy(unsigned int virq)
1273 	irq_data = irq_get_irq_data(virq);
1307 		virq, tail->parent_data->domain->name);
1319 				     unsigned int virq, unsigned int nr_irqs)
1327 		irq_data = irq_get_irq_data(virq + i);
1333 				irq_domain_free_irq_data(virq, i + 1);
1343  * irq_domain_get_irq_data - Get irq_data associated with @virq and @domain
1345  * @virq:	IRQ number to get irq_data
1348 					 unsigned int virq)
1352 	for (irq_data = irq_get_irq_data(virq); irq_data;
1362  * irq_domain_set_hwirq_and_chip - Set hwirq and irqchip of @virq at @domain
1364  * @virq:	IRQ number
1369 int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, unsigned int virq,
1374 	struct irq_data *irq_data = irq_domain_get_irq_data(domain, virq);
1388  * irq_domain_set_info - Set the complete data for a @virq in @domain
1390  * @virq:		IRQ number
1398 void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
1403 	irq_domain_set_hwirq_and_chip(domain, virq, hwirq, chip, chip_data);
1404 	__irq_set_handler(virq, handler, 0, handler_name);
1405 	irq_set_handler_data(virq, handler_data);
1412  * @virq:	IRQ number to start with
1415 void irq_domain_free_irqs_common(struct irq_domain *domain, unsigned int virq,
1422 		irq_data = irq_domain_get_irq_data(domain, virq + i);
1426 	irq_domain_free_irqs_parent(domain, virq, nr_irqs);
1433  * @virq:	IRQ number to start with
1436 void irq_domain_free_irqs_top(struct irq_domain *domain, unsigned int virq,
1442 		irq_set_handler_data(virq + i, NULL);
1443 		irq_set_handler(virq + i, NULL);
1445 	irq_domain_free_irqs_common(domain, virq, nr_irqs);
1479 	int i, ret, virq;
1482 		virq = irq_base;
1484 		virq = irq_domain_alloc_descs(irq_base, nr_irqs, 0, node,
1486 		if (virq < 0) {
1489 			return virq;
1493 	if (irq_domain_alloc_irq_data(domain, virq, nr_irqs)) {
1494 		pr_debug("cannot allocate memory for IRQ%d\n", virq);
1499 	ret = irq_domain_alloc_irqs_hierarchy(domain, virq, nr_irqs, arg);
1504 		ret = irq_domain_trim_hierarchy(virq + i);
1510 		irq_domain_insert_irq(virq + i);
1512 	return virq;
1515 	irq_domain_free_irq_data(virq, nr_irqs);
1517 	irq_free_descs(virq, nr_irqs);
1588  * @virq:	Irq to push the domain in to.
1596 int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg)
1598 	struct irq_data *irq_data = irq_get_irq_data(virq);
1604 	 * Check that no action has been set, which indicates the virq
1612 	desc = irq_to_desc(virq);
1652 	rv = irq_domain_alloc_irqs_hierarchy(domain, virq, 1, arg);
1672  * @virq:	Irq to remove the domain from.
1677 int irq_domain_pop_irq(struct irq_domain *domain, int virq)
1679 	struct irq_data *irq_data = irq_get_irq_data(virq);
1685 	 * Check that no action is set, which indicates the virq is in
1693 	desc = irq_to_desc(virq);
1705 	tmp_irq_data = irq_domain_get_irq_data(domain, virq);
1723 	irq_domain_free_irqs_hierarchy(domain, virq, 1);
1740  * @virq:	base IRQ number
1743 void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs)
1745 	struct irq_data *data = irq_get_irq_data(virq);
1757 		irq_domain_remove_irq(virq + i);
1758 	irq_domain_free_irqs_hierarchy(domain, virq, nr_irqs);
1761 	irq_domain_free_irq_data(virq, nr_irqs);
1762 	irq_free_descs(virq, nr_irqs);
1765 static void irq_domain_free_one_irq(struct irq_domain *domain, unsigned int virq)
1768 		msi_device_domain_free_wired(domain, virq);
1770 		irq_domain_free_irqs(virq, 1);
1884  * irq_domain_get_irq_data - Get irq_data associated with @virq and @domain
1886  * @virq:	IRQ number to get irq_data
1889 					 unsigned int virq)
1891 	struct irq_data *irq_data = irq_get_irq_data(virq);
1898  * irq_domain_set_info - Set the complete data for a @virq in @domain
1900  * @virq:		IRQ number
1908 void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
1913 	irq_set_chip_and_handler_name(virq, chip, handler, handler_name);
1914 	irq_set_chip_data(virq, chip_data);
1915 	irq_set_handler_data(virq, handler_data);
1926 static void irq_domain_free_one_irq(struct irq_domain *domain, unsigned int virq) { }