1 #ifndef __OF_IRQ_H 2 #define __OF_IRQ_H 3 4 #if defined(CONFIG_OF) 5 struct of_irq; 6 #include <linux/types.h> 7 #include <linux/errno.h> 8 #include <linux/irq.h> 9 #include <linux/ioport.h> 10 #include <linux/of.h> 11 12 /* 13 * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC 14 * implements it differently. However, the prototype is the same for all, 15 * so declare it here regardless of the CONFIG_OF_IRQ setting. 16 */ 17 extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); 18 19 #if defined(CONFIG_OF_IRQ) 20 /** 21 * of_irq - container for device_node/irq_specifier pair for an irq controller 22 * @controller: pointer to interrupt controller device tree node 23 * @size: size of interrupt specifier 24 * @specifier: array of cells @size long specifing the specific interrupt 25 * 26 * This structure is returned when an interrupt is mapped. The controller 27 * field needs to be put() after use 28 */ 29 #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ 30 struct of_irq { 31 struct device_node *controller; /* Interrupt controller node */ 32 u32 size; /* Specifier size */ 33 u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ 34 }; 35 36 /* 37 * Workarounds only applied to 32bit powermac machines 38 */ 39 #define OF_IMAP_OLDWORLD_MAC 0x00000001 40 #define OF_IMAP_NO_PHANDLE 0x00000002 41 42 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) 43 extern unsigned int of_irq_workarounds; 44 extern struct device_node *of_irq_dflt_pic; 45 extern int of_irq_map_oldworld(struct device_node *device, int index, 46 struct of_irq *out_irq); 47 #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ 48 #define of_irq_workarounds (0) 49 #define of_irq_dflt_pic (NULL) 50 static inline int of_irq_map_oldworld(struct device_node *device, int index, 51 struct of_irq *out_irq) 52 { 53 return -EINVAL; 54 } 55 #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ 56 57 58 extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec, 59 u32 ointsize, const u32 *addr, 60 struct of_irq *out_irq); 61 extern int of_irq_map_one(struct device_node *device, int index, 62 struct of_irq *out_irq); 63 extern unsigned int irq_create_of_mapping(struct device_node *controller, 64 const u32 *intspec, 65 unsigned int intsize); 66 extern int of_irq_to_resource(struct device_node *dev, int index, 67 struct resource *r); 68 extern int of_irq_count(struct device_node *dev); 69 extern int of_irq_to_resource_table(struct device_node *dev, 70 struct resource *res, int nr_irqs); 71 72 #endif /* CONFIG_OF_IRQ */ 73 #endif /* CONFIG_OF */ 74 #endif /* __OF_IRQ_H */ 75