summaryrefslogtreecommitdiff
path: root/kernel/irq/irqdomain.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/irq/irqdomain.c')
-rw-r--r--kernel/irq/irqdomain.c121
1 files changed, 85 insertions, 36 deletions
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 3a519a01118b..4752b43662e0 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -139,12 +139,7 @@ void irq_domain_remove(struct irq_domain *domain)
{
mutex_lock(&irq_domain_mutex);
- /*
- * radix_tree_delete() takes care of destroying the root
- * node when all entries are removed. Shout if there are
- * any mappings left.
- */
- WARN_ON(domain->revmap_tree.height);
+ WARN_ON(!radix_tree_empty(&domain->revmap_tree));
list_del(&domain->link);
@@ -243,14 +238,15 @@ struct irq_domain *irq_domain_add_legacy(struct device_node *of_node,
EXPORT_SYMBOL_GPL(irq_domain_add_legacy);
/**
- * irq_find_matching_fwnode() - Locates a domain for a given fwnode
- * @fwnode: FW descriptor of the interrupt controller
+ * irq_find_matching_fwspec() - Locates a domain for a given fwspec
+ * @fwspec: FW specifier for an interrupt
* @bus_token: domain-specific data
*/
-struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
+struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token)
{
struct irq_domain *h, *found = NULL;
+ struct fwnode_handle *fwnode = fwspec->fwnode;
int rc;
/* We might want to match the legacy controller last since
@@ -264,7 +260,9 @@ struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
*/
mutex_lock(&irq_domain_mutex);
list_for_each_entry(h, &irq_domain_list, link) {
- if (h->ops->match)
+ if (h->ops->select && fwspec->param_count)
+ rc = h->ops->select(h, fwspec, bus_token);
+ else if (h->ops->match)
rc = h->ops->match(h, to_of_node(fwnode), bus_token);
else
rc = ((fwnode != NULL) && (h->fwnode == fwnode) &&
@@ -279,7 +277,7 @@ struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
mutex_unlock(&irq_domain_mutex);
return found;
}
-EXPORT_SYMBOL_GPL(irq_find_matching_fwnode);
+EXPORT_SYMBOL_GPL(irq_find_matching_fwspec);
/**
* irq_set_default_host() - Set a "default" irq domain
@@ -483,7 +481,7 @@ unsigned int irq_create_mapping(struct irq_domain *domain,
}
/* Allocate a virtual interrupt number */
- virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node));
+ virq = irq_domain_alloc_descs(-1, 1, hwirq, of_node_to_nid(of_node), NULL);
if (virq <= 0) {
pr_debug("-> virq allocation failed\n");
return 0;
@@ -569,16 +567,15 @@ static void of_phandle_args_to_fwspec(struct of_phandle_args *irq_data,
unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec)
{
struct irq_domain *domain;
+ struct irq_data *irq_data;
irq_hw_number_t hwirq;
unsigned int type = IRQ_TYPE_NONE;
int virq;
if (fwspec->fwnode) {
- domain = irq_find_matching_fwnode(fwspec->fwnode,
- DOMAIN_BUS_WIRED);
+ domain = irq_find_matching_fwspec(fwspec, DOMAIN_BUS_WIRED);
if (!domain)
- domain = irq_find_matching_fwnode(fwspec->fwnode,
- DOMAIN_BUS_ANY);
+ domain = irq_find_matching_fwspec(fwspec, DOMAIN_BUS_ANY);
} else {
domain = irq_default_domain;
}
@@ -592,15 +589,46 @@ unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec)
if (irq_domain_translate(domain, fwspec, &hwirq, &type))
return 0;
- if (irq_domain_is_hierarchy(domain)) {
+ /*
+ * WARN if the irqchip returns a type with bits
+ * outside the sense mask set and clear these bits.
+ */
+ if (WARN_ON(type & ~IRQ_TYPE_SENSE_MASK))
+ type &= IRQ_TYPE_SENSE_MASK;
+
+ /*
+ * If we've already configured this interrupt,
+ * don't do it again, or hell will break loose.
+ */
+ virq = irq_find_mapping(domain, hwirq);
+ if (virq) {
+ /*
+ * If the trigger type is not specified or matches the
+ * current trigger type then we are done so return the
+ * interrupt number.
+ */
+ if (type == IRQ_TYPE_NONE || type == irq_get_trigger_type(virq))
+ return virq;
+
/*
- * If we've already configured this interrupt,
- * don't do it again, or hell will break loose.
+ * If the trigger type has not been set yet, then set
+ * it now and return the interrupt number.
*/
- virq = irq_find_mapping(domain, hwirq);
- if (virq)
+ if (irq_get_trigger_type(virq) == IRQ_TYPE_NONE) {
+ irq_data = irq_get_irq_data(virq);
+ if (!irq_data)
+ return 0;
+
+ irqd_set_trigger_type(irq_data, type);
return virq;
+ }
+ pr_warn("type mismatch, failed to map hwirq-%lu for %s!\n",
+ hwirq, of_node_full_name(to_of_node(fwspec->fwnode)));
+ return 0;
+ }
+
+ if (irq_domain_is_hierarchy(domain)) {
virq = irq_domain_alloc_irqs(domain, 1, NUMA_NO_NODE, fwspec);
if (virq <= 0)
return 0;
@@ -611,10 +639,18 @@ unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec)
return virq;
}
- /* Set type if specified and different than the current one */
- if (type != IRQ_TYPE_NONE &&
- type != irq_get_trigger_type(virq))
- irq_set_irq_type(virq, type);
+ irq_data = irq_get_irq_data(virq);
+ if (!irq_data) {
+ if (irq_domain_is_hierarchy(domain))
+ irq_domain_free_irqs(virq, 1);
+ else
+ irq_dispose_mapping(virq);
+ return 0;
+ }
+
+ /* Store trigger type */
+ irqd_set_trigger_type(irq_data, type);
+
return virq;
}
EXPORT_SYMBOL_GPL(irq_create_fwspec_mapping);
@@ -644,8 +680,12 @@ void irq_dispose_mapping(unsigned int virq)
if (WARN_ON(domain == NULL))
return;
- irq_domain_disassociate(domain, virq);
- irq_free_desc(virq);
+ if (irq_domain_is_hierarchy(domain)) {
+ irq_domain_free_irqs(virq, 1);
+ } else {
+ irq_domain_disassociate(domain, virq);
+ irq_free_desc(virq);
+ }
}
EXPORT_SYMBOL_GPL(irq_dispose_mapping);
@@ -839,19 +879,23 @@ const struct irq_domain_ops irq_domain_simple_ops = {
EXPORT_SYMBOL_GPL(irq_domain_simple_ops);
int irq_domain_alloc_descs(int virq, unsigned int cnt, irq_hw_number_t hwirq,
- int node)
+ int node, const struct cpumask *affinity)
{
unsigned int hint;
if (virq >= 0) {
- virq = irq_alloc_descs(virq, virq, cnt, node);
+ virq = __irq_alloc_descs(virq, virq, cnt, node, THIS_MODULE,
+ affinity);
} else {
hint = hwirq % nr_irqs;
if (hint == 0)
hint++;
- virq = irq_alloc_descs_from(hint, cnt, node);
- if (virq <= 0 && hint > 1)
- virq = irq_alloc_descs_from(1, cnt, node);
+ virq = __irq_alloc_descs(-1, hint, cnt, node, THIS_MODULE,
+ affinity);
+ if (virq <= 0 && hint > 1) {
+ virq = __irq_alloc_descs(-1, 1, cnt, node, THIS_MODULE,
+ affinity);
+ }
}
return virq;
@@ -1099,6 +1143,7 @@ void irq_domain_free_irqs_common(struct irq_domain *domain, unsigned int virq,
}
irq_domain_free_irqs_parent(domain, virq, nr_irqs);
}
+EXPORT_SYMBOL_GPL(irq_domain_free_irqs_common);
/**
* irq_domain_free_irqs_top - Clear handler and handler data, clear irqdata and free parent
@@ -1147,8 +1192,10 @@ int irq_domain_alloc_irqs_recursive(struct irq_domain *domain,
if (recursive)
ret = irq_domain_alloc_irqs_recursive(parent, irq_base,
nr_irqs, arg);
- if (ret >= 0)
- ret = domain->ops->alloc(domain, irq_base, nr_irqs, arg);
+ if (ret < 0)
+ return ret;
+
+ ret = domain->ops->alloc(domain, irq_base, nr_irqs, arg);
if (ret < 0 && recursive)
irq_domain_free_irqs_recursive(parent, irq_base, nr_irqs);
@@ -1163,6 +1210,7 @@ int irq_domain_alloc_irqs_recursive(struct irq_domain *domain,
* @node: NUMA node id for memory allocation
* @arg: domain specific argument
* @realloc: IRQ descriptors have already been allocated if true
+ * @affinity: Optional irq affinity mask for multiqueue devices
*
* Allocate IRQ numbers and initialized all data structures to support
* hierarchy IRQ domains.
@@ -1178,7 +1226,7 @@ int irq_domain_alloc_irqs_recursive(struct irq_domain *domain,
*/
int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
unsigned int nr_irqs, int node, void *arg,
- bool realloc)
+ bool realloc, const struct cpumask *affinity)
{
int i, ret, virq;
@@ -1196,7 +1244,8 @@ int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
if (realloc && irq_base >= 0) {
virq = irq_base;
} else {
- virq = irq_domain_alloc_descs(irq_base, nr_irqs, 0, node);
+ virq = irq_domain_alloc_descs(irq_base, nr_irqs, 0, node,
+ affinity);
if (virq < 0) {
pr_debug("cannot allocate IRQ(base %d, count %d)\n",
irq_base, nr_irqs);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 19:44:33 +0300