diff options
| -rw-r--r-- | include/linux/irqdomain.h | 257 |
1 files changed, 113 insertions, 144 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 1a1786dc19d2..2f6e4c9dd743 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -39,9 +39,9 @@ struct msi_parent_ops; * pass a device-specific description of an interrupt. */ struct irq_fwspec { - struct fwnode_handle *fwnode; - int param_count; - u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; + struct fwnode_handle *fwnode; + int param_count; + u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS]; }; /* Conversion function from of_phandle_args fields to fwspec */ @@ -50,26 +50,26 @@ void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, /** * struct irq_domain_ops - Methods for irq_domain objects - * @match: Match an interrupt controller device node to a domain, returns - * 1 on a match - * @select: Match an interrupt controller fw specification. It is more generic - * than @match as it receives a complete struct irq_fwspec. Therefore, - * @select is preferred if provided. Returns 1 on a match. - * @map: Create or update a mapping between a virtual irq number and a hw - * irq number. This is called only once for a given mapping. - * @unmap: Dispose of such a mapping - * @xlate: Given a device tree node and interrupt specifier, decode - * the hardware irq number and linux irq type value. - * @alloc: Allocate @nr_irqs interrupts starting from @virq. - * @free: Free @nr_irqs interrupts starting from @virq. - * @activate: Activate one interrupt in HW (@irqd). If @reserve is set, only - * reserve the vector. If unset, assign the vector (called from - * request_irq()). - * @deactivate: Disarm one interrupt (@irqd). - * @translate: Given @fwspec, decode the hardware irq number (@out_hwirq) and - * linux irq type value (@out_type). This is a generalised @xlate - * (over struct irq_fwspec) and is preferred if provided. - * @debug_show: For domains to show specific data for an interrupt in debugfs. + * @match: Match an interrupt controller device node to a domain, returns + * 1 on a match + * @select: Match an interrupt controller fw specification. It is more generic + * than @match as it receives a complete struct irq_fwspec. Therefore, + * @select is preferred if provided. Returns 1 on a match. + * @map: Create or update a mapping between a virtual irq number and a hw + * irq number. This is called only once for a given mapping. + * @unmap: Dispose of such a mapping + * @xlate: Given a device tree node and interrupt specifier, decode + * the hardware irq number and linux irq type value. + * @alloc: Allocate @nr_irqs interrupts starting from @virq. + * @free: Free @nr_irqs interrupts starting from @virq. + * @activate: Activate one interrupt in HW (@irqd). If @reserve is set, only + * reserve the vector. If unset, assign the vector (called from + * request_irq()). + * @deactivate: Disarm one interrupt (@irqd). + * @translate: Given @fwspec, decode the hardware irq number (@out_hwirq) and + * linux irq type value (@out_type). This is a generalised @xlate + * (over struct irq_fwspec) and is preferred if provided. + * @debug_show: For domains to show specific data for an interrupt in debugfs. * * Functions below are provided by the driver and called whenever a new mapping * is created or an old mapping is disposed. The driver can then proceed to @@ -77,29 +77,29 @@ void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args, * to setup the irq_desc when returning from map(). */ struct irq_domain_ops { - int (*match)(struct irq_domain *d, struct device_node *node, - enum irq_domain_bus_token bus_token); - int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, - enum irq_domain_bus_token bus_token); - int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); - void (*unmap)(struct irq_domain *d, unsigned int virq); - int (*xlate)(struct irq_domain *d, struct device_node *node, - const u32 *intspec, unsigned int intsize, - unsigned long *out_hwirq, unsigned int *out_type); + int (*match)(struct irq_domain *d, struct device_node *node, + enum irq_domain_bus_token bus_token); + int (*select)(struct irq_domain *d, struct irq_fwspec *fwspec, + enum irq_domain_bus_token bus_token); + int (*map)(struct irq_domain *d, unsigned int virq, irq_hw_number_t hw); + void (*unmap)(struct irq_domain *d, unsigned int virq); + int (*xlate)(struct irq_domain *d, struct device_node *node, + const u32 *intspec, unsigned int intsize, + unsigned long *out_hwirq, unsigned int *out_type); #ifdef CONFIG_IRQ_DOMAIN_HIERARCHY /* extended V2 interfaces to support hierarchy irq_domains */ - int (*alloc)(struct irq_domain *d, unsigned int virq, - unsigned int nr_irqs, void *arg); - void (*free)(struct irq_domain *d, unsigned int virq, - unsigned int nr_irqs); - int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); - void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); - int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, - unsigned long *out_hwirq, unsigned int *out_type); + int (*alloc)(struct irq_domain *d, unsigned int virq, + unsigned int nr_irqs, void *arg); + void (*free)(struct irq_domain *d, unsigned int virq, + unsigned int nr_irqs); + int (*activate)(struct irq_domain *d, struct irq_data *irqd, bool reserve); + void (*deactivate)(struct irq_domain *d, struct irq_data *irq_data); + int (*translate)(struct irq_domain *d, struct irq_fwspec *fwspec, + unsigned long *out_hwirq, unsigned int *out_type); #endif #ifdef CONFIG_GENERIC_IRQ_DEBUGFS - void (*debug_show)(struct seq_file *m, struct irq_domain *d, - struct irq_data *irqd, int ind); + void (*debug_show)(struct seq_file *m, struct irq_domain *d, + struct irq_data *irqd, int ind); #endif }; @@ -222,8 +222,7 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d) return to_of_node(d->fwnode); } -static inline void irq_domain_set_pm_device(struct irq_domain *d, - struct device *dev) +static inline void irq_domain_set_pm_device(struct irq_domain *d, struct device *dev) { if (d) d->pm_dev = dev; @@ -239,14 +238,12 @@ enum { IRQCHIP_FWNODE_NAMED_ID, }; -static inline -struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) +static inline struct fwnode_handle *irq_domain_alloc_named_fwnode(const char *name) { return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED, 0, name, NULL); } -static inline -struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) +static inline struct fwnode_handle *irq_domain_alloc_named_id_fwnode(const char *name, int id) { return __irq_domain_alloc_fwnode(IRQCHIP_FWNODE_NAMED_ID, id, name, NULL); @@ -311,23 +308,17 @@ struct irq_domain *irq_domain_instantiate(const struct irq_domain_info *info); struct irq_domain *devm_irq_domain_instantiate(struct device *dev, const struct irq_domain_info *info); -struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, - unsigned int size, +struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode, unsigned int size, unsigned int first_irq, - const struct irq_domain_ops *ops, - void *host_data); -struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, - unsigned int size, - unsigned int first_irq, - irq_hw_number_t first_hwirq, - const struct irq_domain_ops *ops, - void *host_data); + const struct irq_domain_ops *ops, void *host_data); +struct irq_domain *irq_domain_create_legacy(struct fwnode_handle *fwnode, unsigned int size, + unsigned int first_irq, irq_hw_number_t first_hwirq, + const struct irq_domain_ops *ops, void *host_data); struct irq_domain *irq_find_matching_fwspec(struct irq_fwspec *fwspec, enum irq_domain_bus_token bus_token); void irq_set_default_domain(struct irq_domain *domain); struct irq_domain *irq_get_default_domain(void); -int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, - irq_hw_number_t hwirq, int node, +int irq_domain_alloc_descs(int virq, unsigned int nr_irqs, irq_hw_number_t hwirq, int node, const struct irq_affinity_desc *affinity); extern const struct fwnode_operations irqchip_fwnode_ops; @@ -337,12 +328,10 @@ static inline bool is_fwnode_irqchip(const struct fwnode_handle *fwnode) return fwnode && fwnode->ops == &irqchip_fwnode_ops; } -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, - enum irq_domain_bus_token bus_token) +static inline struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, + enum irq_domain_bus_token bus_token) { struct irq_fwspec fwspec = { .fwnode = fwnode, @@ -370,9 +359,9 @@ static inline struct irq_domain *irq_find_host(struct device_node *node) #ifdef CONFIG_IRQ_DOMAIN_NOMAP static inline struct irq_domain *irq_domain_create_nomap(struct fwnode_handle *fwnode, - unsigned int max_irq, - const struct irq_domain_ops *ops, - void *host_data) + unsigned int max_irq, + const struct irq_domain_ops *ops, + void *host_data) { const struct irq_domain_info info = { .fwnode = fwnode, @@ -391,17 +380,17 @@ unsigned int irq_create_direct_mapping(struct irq_domain *domain); /** * irq_domain_create_linear - Allocate and register a linear revmap irq_domain. - * @fwnode: pointer to interrupt controller's FW node. - * @size: Number of interrupts in the domain. - * @ops: map/unmap domain callbacks - * @host_data: Controller private data pointer + * @fwnode: pointer to interrupt controller's FW node. + * @size: Number of interrupts in the domain. + * @ops: map/unmap domain callbacks + * @host_data: Controller private data pointer * * Returns: Newly created irq_domain */ static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle *fwnode, - unsigned int size, - const struct irq_domain_ops *ops, - void *host_data) + unsigned int size, + const struct irq_domain_ops *ops, + void *host_data) { const struct irq_domain_info info = { .fwnode = fwnode, @@ -416,8 +405,8 @@ static inline struct irq_domain *irq_domain_create_linear(struct fwnode_handle * } static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fwnode, - const struct irq_domain_ops *ops, - void *host_data) + const struct irq_domain_ops *ops, + void *host_data) { const struct irq_domain_info info = { .fwnode = fwnode, @@ -432,22 +421,19 @@ static inline struct irq_domain *irq_domain_create_tree(struct fwnode_handle *fw void irq_domain_remove(struct irq_domain *domain); -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, +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); -unsigned int irq_create_mapping_affinity(struct irq_domain *domain, - irq_hw_number_t hwirq, +unsigned int irq_create_mapping_affinity(struct irq_domain *domain, 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); /** * irq_create_mapping - Map a hardware interrupt into linux irq space - * @domain: domain owning this hardware interrupt or NULL for default domain - * @hwirq: hardware irq number in that domain space + * @domain: domain owning this hardware interrupt or NULL for default domain + * @hwirq: hardware irq number in that domain space * * Only one mapping per hardware interrupt is permitted. * @@ -456,8 +442,7 @@ void irq_dispose_mapping(unsigned int virq); * * Returns: Linux irq number or 0 on error */ -static inline unsigned int irq_create_mapping(struct irq_domain *domain, - irq_hw_number_t hwirq) +static inline unsigned int irq_create_mapping(struct irq_domain *domain, irq_hw_number_t hwirq) { return irq_create_mapping_affinity(domain, hwirq, NULL); } @@ -468,8 +453,8 @@ struct irq_desc *__irq_resolve_mapping(struct irq_domain *domain, /** * irq_resolve_mapping - Find a linux irq from a hw irq number. - * @domain: domain owning this hardware interrupt - * @hwirq: hardware irq number in that domain space + * @domain: domain owning this hardware interrupt + * @hwirq: hardware irq number in that domain space * * Returns: Interrupt descriptor */ @@ -481,8 +466,8 @@ static inline struct irq_desc *irq_resolve_mapping(struct irq_domain *domain, /** * irq_find_mapping() - Find a linux irq from a hw irq number. - * @domain: domain owning this hardware interrupt - * @hwirq: hardware irq number in that domain space + * @domain: domain owning this hardware interrupt + * @hwirq: hardware irq number in that domain space * * Returns: Linux irq number or 0 if not found */ @@ -501,14 +486,14 @@ extern const struct irq_domain_ops irq_domain_simple_ops; /* stock xlate functions */ int irq_domain_xlate_onecell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); + const u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_type); int irq_domain_xlate_twocell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); + const u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_type); int irq_domain_xlate_onetwocell(struct irq_domain *d, struct device_node *ctrlr, - const u32 *intspec, unsigned int intsize, - irq_hw_number_t *out_hwirq, unsigned int *out_type); + const u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_type); int irq_domain_xlate_twothreecell(struct irq_domain *d, struct device_node *ctrlr, const u32 *intspec, unsigned int intsize, irq_hw_number_t *out_hwirq, unsigned int *out_type); @@ -525,12 +510,9 @@ 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. */ -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, +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 @@ -551,11 +533,10 @@ void irq_domain_reset_irq_data(struct irq_data *irq_data); * Returns: A pointer to IRQ domain, or %NULL on failure. */ static inline 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) + unsigned int flags, unsigned int size, + struct fwnode_handle *fwnode, + const struct irq_domain_ops *ops, + void *host_data) { const struct irq_domain_info info = { .fwnode = fwnode, @@ -571,9 +552,8 @@ static inline struct irq_domain *irq_domain_create_hierarchy(struct irq_domain * return IS_ERR(d) ? NULL : d; } -int __irq_domain_alloc_irqs(struct irq_domain *domain, int irq_base, - unsigned int nr_irqs, int node, void *arg, - bool realloc, +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); @@ -588,37 +568,29 @@ void irq_domain_deactivate_irq(struct irq_data *irq_data); * * See __irq_domain_alloc_irqs()' documentation. */ -static inline int irq_domain_alloc_irqs(struct irq_domain *domain, - unsigned int nr_irqs, int node, void *arg) +static inline int irq_domain_alloc_irqs(struct irq_domain *domain, unsigned int nr_irqs, + int node, void *arg) { - return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, - NULL); + return __irq_domain_alloc_irqs(domain, -1, nr_irqs, node, arg, false, NULL); } -int irq_domain_set_hwirq_and_chip(struct irq_domain *domain, - unsigned int virq, - irq_hw_number_t hwirq, - const struct irq_chip *chip, +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, +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); +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, +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, +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); +int irq_domain_disconnect_hierarchy(struct irq_domain *domain, unsigned int virq); static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) { @@ -627,8 +599,7 @@ static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) static inline bool irq_domain_is_ipi(struct irq_domain *domain) { - return domain->flags & - (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); + return domain->flags & (IRQ_DOMAIN_FLAG_IPI_PER_CPU | IRQ_DOMAIN_FLAG_IPI_SINGLE); } static inline bool irq_domain_is_ipi_per_cpu(struct irq_domain *domain) @@ -657,14 +628,13 @@ static inline bool irq_domain_is_msi_device(struct irq_domain *domain) } #else /* CONFIG_IRQ_DOMAIN_HIERARCHY */ -static inline int irq_domain_alloc_irqs(struct irq_domain *domain, - unsigned int nr_irqs, int node, void *arg) +static inline int irq_domain_alloc_irqs(struct irq_domain *domain, unsigned int nr_irqs, + int node, void *arg) { return -1; } -static inline void irq_domain_free_irqs(unsigned int virq, - unsigned int nr_irqs) { } +static inline void irq_domain_free_irqs(unsigned int virq, unsigned int nr_irqs) { } static inline bool irq_domain_is_hierarchy(struct irq_domain *domain) { @@ -704,8 +674,7 @@ static inline bool irq_domain_is_msi_device(struct irq_domain *domain) #endif /* CONFIG_IRQ_DOMAIN_HIERARCHY */ #ifdef CONFIG_GENERIC_MSI_IRQ -int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq, - unsigned int type); +int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq, unsigned int type); void msi_device_domain_free_wired(struct irq_domain *domain, unsigned int virq); #else static inline int msi_device_domain_alloc_wired(struct irq_domain *domain, unsigned int hwirq, @@ -727,8 +696,8 @@ static inline struct fwnode_handle *of_node_to_fwnode(struct device_node *node) } static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node, - const struct irq_domain_ops *ops, - void *host_data) + const struct irq_domain_ops *ops, + void *host_data) { struct irq_domain_info info = { .fwnode = of_fwnode_handle(of_node), @@ -743,9 +712,9 @@ static inline struct irq_domain *irq_domain_add_tree(struct device_node *of_node } static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_node, - unsigned int size, - const struct irq_domain_ops *ops, - void *host_data) + unsigned int size, + const struct irq_domain_ops *ops, + void *host_data) { struct irq_domain_info info = { .fwnode = of_fwnode_handle(of_node), @@ -762,8 +731,8 @@ static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_no #else /* CONFIG_IRQ_DOMAIN */ static inline void irq_dispose_mapping(unsigned int virq) { } -static inline struct irq_domain *irq_find_matching_fwnode( - struct fwnode_handle *fwnode, enum irq_domain_bus_token bus_token) +static inline struct irq_domain *irq_find_matching_fwnode(struct fwnode_handle *fwnode, + enum irq_domain_bus_token bus_token) { return NULL; } |