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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | /* 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; extern int of_irq_parse_oldworld(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(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); extern void of_irq_init(const struct of_device_id *matches); #ifdef CONFIG_OF_IRQ 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 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 */ |