| 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 */ |