1 #ifndef __OF_IRQ_H 2 #define __OF_IRQ_H 3 4 #include <linux/types.h> 5 #include <linux/errno.h> 6 #include <linux/irq.h> 7 #include <linux/irqdomain.h> 8 #include <linux/ioport.h> 9 #include <linux/of.h> 10 11 typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); 12 13 /* 14 * Workarounds only applied to 32bit powermac machines 15 */ 16 #define OF_IMAP_OLDWORLD_MAC 0x00000001 17 #define OF_IMAP_NO_PHANDLE 0x00000002 18 19 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) 20 extern unsigned int of_irq_workarounds; 21 extern struct device_node *of_irq_dflt_pic; 22 extern int of_irq_parse_oldworld(struct device_node *device, int index, 23 struct of_phandle_args *out_irq); 24 #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ 25 #define of_irq_workarounds (0) 26 #define of_irq_dflt_pic (NULL) 27 static inline int of_irq_parse_oldworld(struct device_node *device, int index, 28 struct of_phandle_args *out_irq) 29 { 30 return -EINVAL; 31 } 32 #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ 33 34 extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq); 35 extern int of_irq_parse_one(struct device_node *device, int index, 36 struct of_phandle_args *out_irq); 37 extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data); 38 extern int of_irq_to_resource(struct device_node *dev, int index, 39 struct resource *r); 40 41 extern void of_irq_init(const struct of_device_id *matches); 42 43 #ifdef CONFIG_OF_IRQ 44 extern int of_irq_count(struct device_node *dev); 45 extern int of_irq_get(struct device_node *dev, int index); 46 extern int of_irq_get_byname(struct device_node *dev, const char *name); 47 extern int of_irq_to_resource_table(struct device_node *dev, 48 struct resource *res, int nr_irqs); 49 extern struct device_node *of_irq_find_parent(struct device_node *child); 50 extern struct irq_domain *of_msi_get_domain(struct device *dev, 51 struct device_node *np, 52 enum irq_domain_bus_token token); 53 extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, 54 u32 rid); 55 extern void of_msi_configure(struct device *dev, struct device_node *np); 56 u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); 57 #else 58 static inline int of_irq_count(struct device_node *dev) 59 { 60 return 0; 61 } 62 static inline int of_irq_get(struct device_node *dev, int index) 63 { 64 return 0; 65 } 66 static inline int of_irq_get_byname(struct device_node *dev, const char *name) 67 { 68 return 0; 69 } 70 static inline int of_irq_to_resource_table(struct device_node *dev, 71 struct resource *res, int nr_irqs) 72 { 73 return 0; 74 } 75 static inline void *of_irq_find_parent(struct device_node *child) 76 { 77 return NULL; 78 } 79 80 static inline struct irq_domain *of_msi_get_domain(struct device *dev, 81 struct device_node *np, 82 enum irq_domain_bus_token token) 83 { 84 return NULL; 85 } 86 static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, 87 u32 rid) 88 { 89 return NULL; 90 } 91 static inline void of_msi_configure(struct device *dev, struct device_node *np) 92 { 93 } 94 static inline u32 of_msi_map_rid(struct device *dev, 95 struct device_node *msi_np, u32 rid_in) 96 { 97 return rid_in; 98 } 99 #endif 100 101 #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) 102 /* 103 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC 104 * implements it differently. However, the prototype is the same for all, 105 * so declare it here regardless of the CONFIG_OF_IRQ setting. 106 */ 107 extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); 108 109 #else /* !CONFIG_OF && !CONFIG_SPARC */ 110 static inline unsigned int irq_of_parse_and_map(struct device_node *dev, 111 int index) 112 { 113 return 0; 114 } 115 #endif /* !CONFIG_OF */ 116 117 #endif /* __OF_IRQ_H */ 118