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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e3873444 GL |
2 | #ifndef __OF_IRQ_H |
3 | #define __OF_IRQ_H | |
4 | ||
e3873444 | 5 | #include <linux/types.h> |
7dc2e113 | 6 | #include <linux/errno.h> |
530719b2 | 7 | #include <linux/irq.h> |
d593f25f | 8 | #include <linux/irqdomain.h> |
7dc2e113 | 9 | #include <linux/ioport.h> |
e3873444 GL |
10 | #include <linux/of.h> |
11 | ||
df3ed932 | 12 | typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
c71a54b0 | 13 | |
7dc2e113 GL |
14 | /* |
15 | * Workarounds only applied to 32bit powermac machines | |
16 | */ | |
17 | #define OF_IMAP_OLDWORLD_MAC 0x00000001 | |
18 | #define OF_IMAP_NO_PHANDLE 0x00000002 | |
19 | ||
20 | #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) | |
21 | extern unsigned int of_irq_workarounds; | |
22 | extern struct device_node *of_irq_dflt_pic; | |
0c02c800 | 23 | extern int of_irq_parse_oldworld(struct device_node *device, int index, |
530210c7 | 24 | struct of_phandle_args *out_irq); |
7dc2e113 GL |
25 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
26 | #define of_irq_workarounds (0) | |
27 | #define of_irq_dflt_pic (NULL) | |
0c02c800 | 28 | static inline int of_irq_parse_oldworld(struct device_node *device, int index, |
530210c7 | 29 | struct of_phandle_args *out_irq) |
7dc2e113 GL |
30 | { |
31 | return -EINVAL; | |
32 | } | |
33 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ | |
34 | ||
23616132 | 35 | extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq); |
0c02c800 | 36 | extern int of_irq_parse_one(struct device_node *device, int index, |
530210c7 | 37 | struct of_phandle_args *out_irq); |
e6d30ab1 | 38 | extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data); |
7dc2e113 GL |
39 | extern int of_irq_to_resource(struct device_node *dev, int index, |
40 | struct resource *r); | |
e3873444 | 41 | |
c71a54b0 | 42 | extern void of_irq_init(const struct of_device_id *matches); |
08a543ad | 43 | |
a8d3f362 RH |
44 | #ifdef CONFIG_OF_IRQ |
45 | extern int of_irq_count(struct device_node *dev); | |
9ec36caf | 46 | extern int of_irq_get(struct device_node *dev, int index); |
ad69674e | 47 | extern int of_irq_get_byname(struct device_node *dev, const char *name); |
d616a703 GU |
48 | extern int of_irq_to_resource_table(struct device_node *dev, |
49 | struct resource *res, int nr_irqs); | |
4c3141e0 | 50 | extern struct device_node *of_irq_find_parent(struct device_node *child); |
48ae34fb MZ |
51 | extern struct irq_domain *of_msi_get_domain(struct device *dev, |
52 | struct device_node *np, | |
53 | enum irq_domain_bus_token token); | |
82b9b424 MZ |
54 | extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
55 | u32 rid); | |
f9f9f11d | 56 | extern void of_msi_configure(struct device *dev, struct device_node *np); |
eaddb572 | 57 | u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in); |
a8d3f362 RH |
58 | #else |
59 | static inline int of_irq_count(struct device_node *dev) | |
60 | { | |
61 | return 0; | |
62 | } | |
9ec36caf RH |
63 | static inline int of_irq_get(struct device_node *dev, int index) |
64 | { | |
65 | return 0; | |
66 | } | |
ad69674e GS |
67 | static inline int of_irq_get_byname(struct device_node *dev, const char *name) |
68 | { | |
69 | return 0; | |
70 | } | |
d616a703 GU |
71 | static inline int of_irq_to_resource_table(struct device_node *dev, |
72 | struct resource *res, int nr_irqs) | |
73 | { | |
74 | return 0; | |
75 | } | |
4c3141e0 CC |
76 | static inline void *of_irq_find_parent(struct device_node *child) |
77 | { | |
78 | return NULL; | |
79 | } | |
80 | ||
48ae34fb MZ |
81 | static inline struct irq_domain *of_msi_get_domain(struct device *dev, |
82 | struct device_node *np, | |
83 | enum irq_domain_bus_token token) | |
84 | { | |
85 | return NULL; | |
86 | } | |
82b9b424 MZ |
87 | static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
88 | u32 rid) | |
89 | { | |
90 | return NULL; | |
91 | } | |
f9f9f11d JG |
92 | static inline void of_msi_configure(struct device *dev, struct device_node *np) |
93 | { | |
94 | } | |
eaddb572 RH |
95 | static inline u32 of_msi_map_rid(struct device *dev, |
96 | struct device_node *msi_np, u32 rid_in) | |
97 | { | |
98 | return rid_in; | |
99 | } | |
a8d3f362 RH |
100 | #endif |
101 | ||
62ebf931 | 102 | #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) |
b0b8c960 RH |
103 | /* |
104 | * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC | |
105 | * implements it differently. However, the prototype is the same for all, | |
106 | * so declare it here regardless of the CONFIG_OF_IRQ setting. | |
107 | */ | |
108 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); | |
766644d2 | 109 | |
62ebf931 | 110 | #else /* !CONFIG_OF && !CONFIG_SPARC */ |
766644d2 TA |
111 | static inline unsigned int irq_of_parse_and_map(struct device_node *dev, |
112 | int index) | |
113 | { | |
114 | return 0; | |
115 | } | |
116 | #endif /* !CONFIG_OF */ | |
117 | ||
e3873444 | 118 | #endif /* __OF_IRQ_H */ |