#ifndef __OF_IRQ_H #define __OF_IRQ_H #include #include #include #include #include #include /** * of_irq - container for device_node/irq_specifier pair for an irq controller * @controller: pointer to interrupt controller device tree node * @size: size of interrupt specifier * @specifier: array of cells @size long specifing the specific interrupt * * This structure is returned when an interrupt is mapped. The controller * field needs to be put() after use */ #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ struct of_irq { struct device_node *controller; /* Interrupt controller node */ u32 size; /* Specifier size */ u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ }; 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; extern int of_irq_parse_oldworld(struct device_node *device, int index, struct of_irq *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(struct device_node *device, int index, struct of_irq *out_irq) { return -EINVAL; } #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ extern int of_irq_parse_raw(struct device_node *parent, const __be32 *intspec, u32 ointsize, const __be32 *addr, struct of_irq *out_irq); extern int of_irq_parse_one(struct device_node *device, int index, struct of_irq *out_irq); extern unsigned int irq_create_of_mapping(struct device_node *controller, const u32 *intspec, unsigned int intsize); extern int of_irq_to_resource(struct device_node *dev, int index, struct resource *r); extern int of_irq_count(struct device_node *dev); extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); extern void of_irq_init(const struct of_device_id *matches); #if defined(CONFIG_OF) /* * 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); extern struct device_node *of_irq_find_parent(struct device_node *child); #else /* !CONFIG_OF */ static inline unsigned int irq_of_parse_and_map(struct device_node *dev, int index) { return 0; } static inline void *of_irq_find_parent(struct device_node *child) { return NULL; } #endif /* !CONFIG_OF */ #endif /* __OF_IRQ_H */