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-rw-r--r--include/linux/irqdomain.h137
-rw-r--r--kernel/irq/chip.c30
-rw-r--r--kernel/irq/internals.h9
-rw-r--r--kernel/irq/irqdesc.c2
-rw-r--r--kernel/irq/irqdomain.c5
-rw-r--r--kernel/irq/manage.c7
-rw-r--r--kernel/irq/msi.c19
7 files changed, 109 insertions, 100 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index e432b6a12a32..33ff41eef8f7 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -350,13 +350,13 @@ struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode,
irq_hw_number_t first_hwirq,
const struct irq_domain_ops *ops,
void *host_data);
-extern struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
- enum irq_domain_bus_token bus_token);
-extern void irq_set_default_host(struct irq_domain *host);
-extern struct irq_domain *irq_get_default_host(void);
-extern int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
- irq_hw_number_t hwirq, int node,
- const struct irq_affinity_desc *affinity);
+struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec,
+ enum irq_domain_bus_token bus_token);
+void irq_set_default_host(struct irq_domain *host);
+struct irq_domain *irq_get_default_host(void);
+int irq_domain_alloc_descs(int virq, unsigned int nr_irqs,
+ irq_hw_number_t hwirq, int node,
+ const struct irq_affinity_desc *affinity);
static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node)
{
@@ -370,8 +370,8 @@ static inline bool is_fwnode_irqchip(const struct fwnode_handle *fwnode)
return fwnode && fwnode->ops == &irqchip_fwnode_ops;
}
-extern void irq_domain_update_bus_token(struct irq_domain *domain,
- enum irq_domain_bus_token bus_token);
+void irq_domain_update_bus_token(struct irq_domain *domain,
+ enum irq_domain_bus_token bus_token);
static inline
struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode,
@@ -454,7 +454,7 @@ static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_nod
return IS_ERR(d) ? NULL : d;
}
-extern unsigned int irq_create_direct_mapping(struct irq_domain *host);
+unsigned int irq_create_direct_mapping(struct irq_domain *host);
#endif
static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node,
@@ -507,19 +507,19 @@ static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fw
return IS_ERR(d) ? NULL : d;
}
-extern void irq_domain_remove(struct irq_domain *host);
+void irq_domain_remove(struct irq_domain *host);
-extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
- irq_hw_number_t hwirq);
-extern void irq_domain_associate_many(struct irq_domain *domain,
- unsigned int irq_base,
- irq_hw_number_t hwirq_base, int count);
+int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
+ irq_hw_number_t hwirq);
+void irq_domain_associate_many(struct irq_domain *domain,
+ unsigned int irq_base,
+ irq_hw_number_t hwirq_base, int count);
-extern unsigned int irq_create_mapping_affinity(struct irq_domain *host,
- irq_hw_number_t hwirq,
- const struct irq_affinity_desc *affinity);
-extern unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
-extern void irq_dispose_mapping(unsigned int virq);
+unsigned int irq_create_mapping_affinity(struct irq_domain *host,
+ irq_hw_number_t hwirq,
+ const struct irq_affinity_desc *affinity);
+unsigned int irq_create_fwspec_mapping(struct irq_fwspec *fwspec);
+void irq_dispose_mapping(unsigned int virq);
static inline unsigned int irq_create_mapping(struct irq_domain *host,
irq_hw_number_t hwirq)
@@ -527,9 +527,9 @@ static inline unsigned int irq_create_mapping(struct irq_domain *host,
return irq_create_mapping_affinity(host, hwirq, NULL);
}
-extern struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
- irq_hw_number_t hwirq,
- unsigned int *irq);
+struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain,
+ irq_hw_number_t hwirq,
+ unsigned int *irq);
static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain,
irq_hw_number_t hwirq)
@@ -587,19 +587,21 @@ int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
/* V2 interfaces to support hierarchy IRQ domains. */
-extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
- unsigned int virq);
-extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
- irq_hw_number_t hwirq,
- const struct irq_chip *chip,
- void *chip_data, irq_flow_handler_t handler,
- void *handler_data, const char *handler_name);
-extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
+struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
+ unsigned int virq);
+void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
+ irq_hw_number_t hwirq,
+ const struct irq_chip *chip,
+ void *chip_data, irq_flow_handler_t handler,
+ void *handler_data, const char *handler_name);
+void irq_domain_reset_irq_data(struct irq_data *irq_data);
#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
-extern struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
- unsigned int flags, unsigned int size,
- struct fwnode_handle *fwnode,
- const struct irq_domain_ops *ops, void *host_data);
+struct irq_domain *irq_domain_create_hierarchy(struct irq_domain *parent,
+ unsigned int flags,
+ unsigned int size,
+ struct fwnode_handle *fwnode,
+ const struct irq_domain_ops *ops,
+ void *host_data);
static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *parent,
unsigned int flags,
@@ -613,13 +615,13 @@ static inline struct irq_domain *irq_domain_add_hierarchy(struct irq_domain *par
ops, host_data);
}
-extern int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
- unsigned int nr_irqs, int node, void *arg,
- bool realloc,
- const struct irq_affinity_desc *affinity);
-extern void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
-extern int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
-extern void irq_domain_deactivate_irq(struct irq_data *irq_data);
+int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base,
+ unsigned int nr_irqs, int node, void *arg,
+ bool realloc,
+ const struct irq_affinity_desc *affinity);
+void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs);
+int irq_domain_activate_irq(struct irq_data *irq_data, bool early);
+void irq_domain_deactivate_irq(struct irq_data *irq_data);
static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
unsigned int nr_irqs, int node, void *arg)
@@ -628,32 +630,29 @@ static inline int irq_domain_alloc_irqs(struct irq_domain *domain,
NULL);
}
-extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
- unsigned int irq_base,
- unsigned int nr_irqs, void *arg);
-extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
- unsigned int virq,
- irq_hw_number_t hwirq,
- const struct irq_chip *chip,
- void *chip_data);
-extern void irq_domain_free_irqs_common(struct irq_domain *domain,
- unsigned int virq,
- unsigned int nr_irqs);
-extern void irq_domain_free_irqs_top(struct irq_domain *domain,
- unsigned int virq, unsigned int nr_irqs);
-
-extern int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
-extern int irq_domain_pop_irq(struct irq_domain *domain, int virq);
-
-extern int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
- unsigned int irq_base,
- unsigned int nr_irqs, void *arg);
-
-extern void irq_domain_free_irqs_parent(struct irq_domain *domain,
- unsigned int irq_base,
- unsigned int nr_irqs);
-
-extern int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
+int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
+ unsigned int virq,
+ irq_hw_number_t hwirq,
+ const struct irq_chip *chip,
+ void *chip_data);
+void irq_domain_free_irqs_common(struct irq_domain *domain,
+ unsigned int virq,
+ unsigned int nr_irqs);
+void irq_domain_free_irqs_top(struct irq_domain *domain,
+ unsigned int virq, unsigned int nr_irqs);
+
+int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg);
+int irq_domain_pop_irq(struct irq_domain *domain, int virq);
+
+int irq_domain_alloc_irqs_parent(struct irq_domain *domain,
+ unsigned int irq_base,
+ unsigned int nr_irqs, void *arg);
+
+void irq_domain_free_irqs_parent(struct irq_domain *domain,
+ unsigned int irq_base,
+ unsigned int nr_irqs);
+
+int irq_domain_disconnect_hierarchy(struct irq_domain *domain,
unsigned int virq);
static inline bool irq_domain_is_hierarchy(struct irq_domain *domain)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index c901436ebd9f..0ff987d3a799 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -232,6 +232,21 @@ __irq_startup_managed(struct irq_desc *desc, const struct cpumask *aff,
}
#endif
+static void irq_enable(struct irq_desc *desc)
+{
+ if (!irqd_irq_disabled(&desc->irq_data)) {
+ unmask_irq(desc);
+ } else {
+ irq_state_clr_disabled(desc);
+ if (desc->irq_data.chip->irq_enable) {
+ desc->irq_data.chip->irq_enable(&desc->irq_data);
+ irq_state_clr_masked(desc);
+ } else {
+ unmask_irq(desc);
+ }
+ }
+}
+
static int __irq_startup(struct irq_desc *desc)
{
struct irq_data *d = irq_desc_get_irq_data(desc);
@@ -332,21 +347,6 @@ void irq_shutdown_and_deactivate(struct irq_desc *desc)
irq_domain_deactivate_irq(&desc->irq_data);
}
-void irq_enable(struct irq_desc *desc)
-{
- if (!irqd_irq_disabled(&desc->irq_data)) {
- unmask_irq(desc);
- } else {
- irq_state_clr_disabled(desc);
- if (desc->irq_data.chip->irq_enable) {
- desc->irq_data.chip->irq_enable(&desc->irq_data);
- irq_state_clr_masked(desc);
- } else {
- unmask_irq(desc);
- }
- }
-}
-
static void __irq_disable(struct irq_desc *desc, bool mask)
{
if (irqd_irq_disabled(&desc->irq_data)) {
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index a979523640d0..556b7132f831 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -90,7 +90,6 @@ extern int irq_startup(struct irq_desc *desc, bool resend, bool force);
extern void irq_shutdown(struct irq_desc *desc);
extern void irq_shutdown_and_deactivate(struct irq_desc *desc);
-extern void irq_enable(struct irq_desc *desc);
extern void irq_disable(struct irq_desc *desc);
extern void irq_percpu_enable(struct irq_desc *desc, unsigned int cpu);
extern void irq_percpu_disable(struct irq_desc *desc, unsigned int cpu);
@@ -98,18 +97,12 @@ extern void mask_irq(struct irq_desc *desc);
extern void unmask_irq(struct irq_desc *desc);
extern void unmask_threaded_irq(struct irq_desc *desc);
-extern unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask);
-
#ifdef CONFIG_SPARSE_IRQ
static inline void irq_mark_irq(unsigned int irq) { }
#else
extern void irq_mark_irq(unsigned int irq);
#endif
-extern int __irq_get_irqchip_state(struct irq_data *data,
- enum irqchip_irq_state which,
- bool *state);
-
irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc);
irqreturn_t handle_irq_event_percpu(struct irq_desc *desc);
irqreturn_t handle_irq_event(struct irq_desc *desc);
@@ -139,8 +132,6 @@ static inline void unregister_handler_proc(unsigned int irq,
extern bool irq_can_set_affinity_usr(unsigned int irq);
-extern void irq_set_thread_affinity(struct irq_desc *desc);
-
extern int irq_do_set_affinity(struct irq_data *data,
const struct cpumask *dest, bool force);
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 287830739783..4258cd6bd3b4 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -991,7 +991,7 @@ unsigned int kstat_irqs_cpu(unsigned int irq, int cpu)
return desc && desc->kstat_irqs ? per_cpu(desc->kstat_irqs->cnt, cpu) : 0;
}
-unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask)
+static unsigned int kstat_irqs_desc(struct irq_desc *desc, const struct cpumask *cpumask)
{
unsigned int sum = 0;
int cpu;
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index ec6d8e72d980..2861f89880af 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -1589,9 +1589,8 @@ static void irq_domain_free_irqs_hierarchy(struct irq_domain *domain,
}
}
-int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
- unsigned int irq_base,
- unsigned int nr_irqs, void *arg)
+static int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain, unsigned int irq_base,
+ unsigned int nr_irqs, void *arg)
{
if (!domain->ops->alloc) {
pr_debug("domain->ops->alloc() is NULL\n");
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index f300bb6be3bd..753eef8e041c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -35,6 +35,8 @@ static int __init setup_forced_irqthreads(char *arg)
early_param("threadirqs", setup_forced_irqthreads);
#endif
+static int __irq_get_irqchip_state(struct irq_data *d, enum irqchip_irq_state which, bool *state);
+
static void __synchronize_hardirq(struct irq_desc *desc, bool sync_chip)
{
struct irq_data *irqd = irq_desc_get_irq_data(desc);
@@ -187,7 +189,7 @@ bool irq_can_set_affinity_usr(unsigned int irq)
* set_cpus_allowed_ptr() here as we hold desc->lock and this
* code can be called from hard interrupt context.
*/
-void irq_set_thread_affinity(struct irq_desc *desc)
+static void irq_set_thread_affinity(struct irq_desc *desc)
{
struct irqaction *action;
@@ -2789,8 +2791,7 @@ out:
irq_put_desc_unlock(desc, flags);
}
-int __irq_get_irqchip_state(struct irq_data *data, enum irqchip_irq_state which,
- bool *state)
+static int __irq_get_irqchip_state(struct irq_data *data, enum irqchip_irq_state which, bool *state)
{
struct irq_chip *chip;
int err = -EINVAL;
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index 396a067a8a56..fa92882efdb1 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -15,6 +15,7 @@
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/slab.h>
+#include <linux/seq_file.h>
#include <linux/sysfs.h>
#include <linux/types.h>
#include <linux/xarray.h>
@@ -756,12 +757,30 @@ static int msi_domain_translate(struct irq_domain *domain, struct irq_fwspec *fw
return info->ops->msi_translate(domain, fwspec, hwirq, type);
}
+#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+static void msi_domain_debug_show(struct seq_file *m, struct irq_domain *d,
+ struct irq_data *irqd, int ind)
+{
+ struct msi_desc *desc = irq_data_get_msi_desc(irqd);
+
+ if (!desc)
+ return;
+
+ seq_printf(m, "\n%*saddress_hi: 0x%08x", ind + 1, "", desc->msg.address_hi);
+ seq_printf(m, "\n%*saddress_lo: 0x%08x", ind + 1, "", desc->msg.address_lo);
+ seq_printf(m, "\n%*smsg_data: 0x%08x\n", ind + 1, "", desc->msg.data);
+}
+#endif
+
static const struct irq_domain_ops msi_domain_ops = {
.alloc = msi_domain_alloc,
.free = msi_domain_free,
.activate = msi_domain_activate,
.deactivate = msi_domain_deactivate,
.translate = msi_domain_translate,
+#ifdef CONFIG_GENERIC_IRQ_DEBUGFS
+ .debug_show = msi_domain_debug_show,
+#endif
};
static irq_hw_number_t msi_domain_ops_get_hwirq(struct msi_domain_info *info,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.