/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __OF_IRQ_H #define __OF_IRQ_H #include <linux/types.h> #include <linux/errno.h> #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/ioport.h> #include <linux/of.h> typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); /* * Workarounds only applied to 32bit powermac machines */ #define OF_IMAP_OLDWORLD_MAC 0x00000001 #define OF_IMAP_NO_PHANDLE 0x00000002 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) extern unsigned int of_irq_workarounds; extern struct device_node *of_irq_dflt_pic; int of_irq_parse_oldworld(const struct device_node *device, int index, struct of_phandle_args *out_irq); #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ #define of_irq_workarounds (0) #define of_irq_dflt_pic (NULL) static inline int of_irq_parse_oldworld(const struct device_node *device, int index, struct of_phandle_args *out_irq) { return -EINVAL; } #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq); extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data); extern int of_irq_to_resource(struct device_node *dev, int index, struct resource *r); #ifdef CONFIG_OF_IRQ extern void of_irq_init(const struct of_device_id *matches); extern int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq); extern int of_irq_count(struct device_node *dev); extern int of_irq_get(struct device_node *dev, int index); extern int of_irq_get_byname(struct device_node *dev, const char *name); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); extern struct device_node *of_irq_find_parent(struct device_node *child); extern struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token); extern void of_msi_configure(struct device *dev, struct device_node *np); u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline void of_irq_init(const struct of_device_id *matches) { } static inline int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq) { return -EINVAL; } static inline int of_irq_count(struct device_node *dev) { return 0; } static inline int of_irq_get(struct device_node *dev, int index) { return 0; } static inline int of_irq_get_byname(struct device_node *dev, const char *name) { return 0; } static inline int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs) { return 0; } static inline void *of_irq_find_parent(struct device_node *child) { return NULL; } static inline struct irq_domain *of_msi_get_domain(struct device *dev, struct device_node *np, enum irq_domain_bus_token token) { return NULL; } static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token) { return NULL; } static inline void of_msi_configure(struct device *dev, struct device_node *np) { } static inline u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in) { return id_in; } #endif #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) /* * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC * implements it differently. However, the prototype is the same for all, * so declare it here regardless of the CONFIG_OF_IRQ setting. */ extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); #else /* !CONFIG_OF && !CONFIG_SPARC */ static inline unsigned int irq_of_parse_and_map(struct device_node *dev, int index) { return 0; } #endif /* !CONFIG_OF */ #endif /* __OF_IRQ_H */