Commit | Line | Data |
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e3873444 GL |
1 | #ifndef __OF_IRQ_H |
2 | #define __OF_IRQ_H | |
3 | ||
e3873444 | 4 | #include <linux/types.h> |
7dc2e113 | 5 | #include <linux/errno.h> |
530719b2 | 6 | #include <linux/irq.h> |
d593f25f | 7 | #include <linux/irqdomain.h> |
7dc2e113 | 8 | #include <linux/ioport.h> |
e3873444 GL |
9 | #include <linux/of.h> |
10 | ||
e3873444 GL |
11 | /** |
12 | * of_irq - container for device_node/irq_specifier pair for an irq controller | |
13 | * @controller: pointer to interrupt controller device tree node | |
14 | * @size: size of interrupt specifier | |
15 | * @specifier: array of cells @size long specifing the specific interrupt | |
16 | * | |
17 | * This structure is returned when an interrupt is mapped. The controller | |
18 | * field needs to be put() after use | |
19 | */ | |
20 | #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ | |
21 | struct of_irq { | |
22 | struct device_node *controller; /* Interrupt controller node */ | |
23 | u32 size; /* Specifier size */ | |
24 | u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ | |
25 | }; | |
26 | ||
c71a54b0 RH |
27 | typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
28 | ||
7dc2e113 GL |
29 | /* |
30 | * Workarounds only applied to 32bit powermac machines | |
31 | */ | |
32 | #define OF_IMAP_OLDWORLD_MAC 0x00000001 | |
33 | #define OF_IMAP_NO_PHANDLE 0x00000002 | |
34 | ||
35 | #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) | |
36 | extern unsigned int of_irq_workarounds; | |
37 | extern struct device_node *of_irq_dflt_pic; | |
38 | extern int of_irq_map_oldworld(struct device_node *device, int index, | |
39 | struct of_irq *out_irq); | |
40 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ | |
41 | #define of_irq_workarounds (0) | |
42 | #define of_irq_dflt_pic (NULL) | |
43 | static inline int of_irq_map_oldworld(struct device_node *device, int index, | |
44 | struct of_irq *out_irq) | |
45 | { | |
46 | return -EINVAL; | |
47 | } | |
48 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ | |
49 | ||
50 | ||
d2e41518 KP |
51 | extern int of_irq_map_raw(struct device_node *parent, const __be32 *intspec, |
52 | u32 ointsize, const __be32 *addr, | |
7dc2e113 | 53 | struct of_irq *out_irq); |
e3873444 GL |
54 | extern int of_irq_map_one(struct device_node *device, int index, |
55 | struct of_irq *out_irq); | |
56 | extern unsigned int irq_create_of_mapping(struct device_node *controller, | |
57 | const u32 *intspec, | |
58 | unsigned int intsize); | |
7dc2e113 GL |
59 | extern int of_irq_to_resource(struct device_node *dev, int index, |
60 | struct resource *r); | |
52f6537c AS |
61 | extern int of_irq_count(struct device_node *dev); |
62 | extern int of_irq_to_resource_table(struct device_node *dev, | |
63 | struct resource *res, int nr_irqs); | |
e3873444 | 64 | |
c71a54b0 | 65 | extern void of_irq_init(const struct of_device_id *matches); |
08a543ad | 66 | |
b0b8c960 RH |
67 | #if defined(CONFIG_OF) |
68 | /* | |
69 | * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC | |
70 | * implements it differently. However, the prototype is the same for all, | |
71 | * so declare it here regardless of the CONFIG_OF_IRQ setting. | |
72 | */ | |
73 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); | |
74 | extern struct device_node *of_irq_find_parent(struct device_node *child); | |
766644d2 TA |
75 | |
76 | #else /* !CONFIG_OF */ | |
77 | static inline unsigned int irq_of_parse_and_map(struct device_node *dev, | |
78 | int index) | |
79 | { | |
80 | return 0; | |
81 | } | |
62861095 LJ |
82 | |
83 | static inline void *of_irq_find_parent(struct device_node *child) | |
84 | { | |
85 | return NULL; | |
86 | } | |
766644d2 TA |
87 | #endif /* !CONFIG_OF */ |
88 | ||
e3873444 | 89 | #endif /* __OF_IRQ_H */ |