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