6 #include <linux/types.h>
7 #include <linux/errno.h>
9 #include <linux/irqdomain.h>
10 #include <linux/ioport.h>
14 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
15 * implements it differently. However, the prototype is the same for all,
16 * so declare it here regardless of the CONFIG_OF_IRQ setting.
18 extern unsigned int irq_of_parse_and_map(struct device_node
*node
, int index
);
20 #if defined(CONFIG_OF_IRQ)
22 * of_irq - container for device_node/irq_specifier pair for an irq controller
23 * @controller: pointer to interrupt controller device tree node
24 * @size: size of interrupt specifier
25 * @specifier: array of cells @size long specifing the specific interrupt
27 * This structure is returned when an interrupt is mapped. The controller
28 * field needs to be put() after use
30 #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */
32 struct device_node
*controller
; /* Interrupt controller node */
33 u32 size
; /* Specifier size */
34 u32 specifier
[OF_MAX_IRQ_SPEC
]; /* Specifier copy */
37 typedef int (*of_irq_init_cb_t
)(struct device_node
*, struct device_node
*);
40 * Workarounds only applied to 32bit powermac machines
42 #define OF_IMAP_OLDWORLD_MAC 0x00000001
43 #define OF_IMAP_NO_PHANDLE 0x00000002
45 #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
46 extern unsigned int of_irq_workarounds
;
47 extern struct device_node
*of_irq_dflt_pic
;
48 extern int of_irq_map_oldworld(struct device_node
*device
, int index
,
49 struct of_irq
*out_irq
);
50 #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
51 #define of_irq_workarounds (0)
52 #define of_irq_dflt_pic (NULL)
53 static inline int of_irq_map_oldworld(struct device_node
*device
, int index
,
54 struct of_irq
*out_irq
)
58 #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
61 extern int of_irq_map_raw(struct device_node
*parent
, const __be32
*intspec
,
62 u32 ointsize
, const __be32
*addr
,
63 struct of_irq
*out_irq
);
64 extern int of_irq_map_one(struct device_node
*device
, int index
,
65 struct of_irq
*out_irq
);
66 extern unsigned int irq_create_of_mapping(struct device_node
*controller
,
68 unsigned int intsize
);
69 extern int of_irq_to_resource(struct device_node
*dev
, int index
,
71 extern int of_irq_count(struct device_node
*dev
);
72 extern int of_irq_to_resource_table(struct device_node
*dev
,
73 struct resource
*res
, int nr_irqs
);
74 extern struct device_node
*of_irq_find_parent(struct device_node
*child
);
76 extern void of_irq_init(const struct of_device_id
*matches
);
78 #endif /* CONFIG_OF_IRQ */
80 #else /* !CONFIG_OF */
81 static inline unsigned int irq_of_parse_and_map(struct device_node
*dev
,
87 static inline void *of_irq_find_parent(struct device_node
*child
)
91 #endif /* !CONFIG_OF */
93 #endif /* __OF_IRQ_H */