1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __OF_IRQ_H |
3 | #define __OF_IRQ_H |
4 | |
5 | #include <linux/types.h> |
6 | #include <linux/errno.h> |
7 | #include <linux/irq.h> |
8 | #include <linux/irqdomain.h> |
9 | #include <linux/ioport.h> |
10 | #include <linux/of.h> |
11 | |
12 | typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
13 | |
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; |
23 | int of_irq_parse_oldworld(const struct device_node *device, int index, |
24 | struct of_phandle_args *out_irq); |
25 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
26 | #define of_irq_workarounds (0) |
27 | #define of_irq_dflt_pic (NULL) |
28 | static inline int of_irq_parse_oldworld(const struct device_node *device, int index, |
29 | struct of_phandle_args *out_irq) |
30 | { |
31 | return -EINVAL; |
32 | } |
33 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
34 | |
35 | extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq); |
36 | extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data); |
37 | extern int of_irq_to_resource(struct device_node *dev, int index, |
38 | struct resource *r); |
39 | |
40 | #ifdef CONFIG_OF_IRQ |
41 | extern void of_irq_init(const struct of_device_id *matches); |
42 | extern int of_irq_parse_one(struct device_node *device, int index, |
43 | struct of_phandle_args *out_irq); |
44 | extern int of_irq_count(struct device_node *dev); |
45 | extern int of_irq_get(struct device_node *dev, int index); |
46 | extern int of_irq_get_byname(struct device_node *dev, const char *name); |
47 | extern int of_irq_to_resource_table(struct device_node *dev, |
48 | struct resource *res, int nr_irqs); |
49 | extern struct device_node *of_irq_find_parent(struct device_node *child); |
50 | extern struct irq_domain *of_msi_get_domain(struct device *dev, |
51 | struct device_node *np, |
52 | enum irq_domain_bus_token token); |
53 | extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
54 | u32 id, |
55 | u32 bus_token); |
56 | extern void of_msi_configure(struct device *dev, struct device_node *np); |
57 | u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); |
58 | #else |
59 | static inline void of_irq_init(const struct of_device_id *matches) |
60 | { |
61 | } |
62 | static inline int of_irq_parse_one(struct device_node *device, int index, |
63 | struct of_phandle_args *out_irq) |
64 | { |
65 | return -EINVAL; |
66 | } |
67 | static inline int of_irq_count(struct device_node *dev) |
68 | { |
69 | return 0; |
70 | } |
71 | static inline int of_irq_get(struct device_node *dev, int index) |
72 | { |
73 | return 0; |
74 | } |
75 | static inline int of_irq_get_byname(struct device_node *dev, const char *name) |
76 | { |
77 | return 0; |
78 | } |
79 | static inline int of_irq_to_resource_table(struct device_node *dev, |
80 | struct resource *res, int nr_irqs) |
81 | { |
82 | return 0; |
83 | } |
84 | static inline void *of_irq_find_parent(struct device_node *child) |
85 | { |
86 | return NULL; |
87 | } |
88 | |
89 | static inline struct irq_domain *of_msi_get_domain(struct device *dev, |
90 | struct device_node *np, |
91 | enum irq_domain_bus_token token) |
92 | { |
93 | return NULL; |
94 | } |
95 | static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
96 | u32 id, u32 bus_token) |
97 | { |
98 | return NULL; |
99 | } |
100 | static inline void of_msi_configure(struct device *dev, struct device_node *np) |
101 | { |
102 | } |
103 | static inline u32 of_msi_map_id(struct device *dev, |
104 | struct device_node *msi_np, u32 id_in) |
105 | { |
106 | return id_in; |
107 | } |
108 | #endif |
109 | |
110 | #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) |
111 | /* |
112 | * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC |
113 | * implements it differently. However, the prototype is the same for all, |
114 | * so declare it here regardless of the CONFIG_OF_IRQ setting. |
115 | */ |
116 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); |
117 | |
118 | #else /* !CONFIG_OF && !CONFIG_SPARC */ |
119 | static inline unsigned int irq_of_parse_and_map(struct device_node *dev, |
120 | int index) |
121 | { |
122 | return 0; |
123 | } |
124 | #endif /* !CONFIG_OF */ |
125 | |
126 | #endif /* __OF_IRQ_H */ |
127 | |