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 extern int of_irq_to_resource_table(struct device_node *dev, 41 struct resource *res, int nr_irqs); 42 43 extern void of_irq_init(const struct of_device_id *matches); 44 45 #ifdef CONFIG_OF_IRQ 46 extern int of_irq_count(struct device_node *dev); 47 #else 48 static inline int of_irq_count(struct device_node *dev) 49 { 50 return 0; 51 } 52 #endif 53 54 #if defined(CONFIG_OF) 55 /* 56 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC 57 * implements it differently. However, the prototype is the same for all, 58 * so declare it here regardless of the CONFIG_OF_IRQ setting. 59 */ 60 extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); 61 extern struct device_node *of_irq_find_parent(struct device_node *child); 62 63 #else /* !CONFIG_OF */ 64 static inline unsigned int irq_of_parse_and_map(struct device_node *dev, 65 int index) 66 { 67 return 0; 68 } 69 70 static inline void *of_irq_find_parent(struct device_node *child) 71 { 72 return NULL; 73 } 74 #endif /* !CONFIG_OF */ 75 76 #endif /* __OF_IRQ_H */ 77