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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172/* 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 *);
struct of_imap_parser { struct device_node *node; const __be32 *imap; const __be32 *imap_end; u32 parent_offset;};
struct of_imap_item { struct of_phandle_args parent_args; u32 child_imap_count; u32 child_imap[16]; /* Arbitrary size. * Should be #address-cells + #interrupt-cells but * avoid using allocation and so, expect that 16 * should be enough */};
/* * If the iterator is exited prematurely (break, goto, return) of_node_put() has * to be called on item.parent_args.np */#define for_each_of_imap_item(parser, item) \ for (; of_imap_parser_one(parser, item);)
/* * 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_IRQextern 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 const struct cpumask *of_irq_get_affinity(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 int of_imap_parser_init(struct of_imap_parser *parser, struct device_node *node, struct of_imap_item *item);extern struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser, struct of_imap_item *item);extern struct irq_domain *of_msi_get_domain(struct device *dev, const 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, const struct device_node *np);extern u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in);#elsestatic 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 const struct cpumask *of_irq_get_affinity(struct device_node *dev, int index){ return NULL;}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 int of_imap_parser_init(struct of_imap_parser *parser, struct device_node *node, struct of_imap_item *item){ return -ENOSYS;}static inline struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser, struct of_imap_item *item){ 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_xlate(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 */