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76c1ce78 SR |
1 | #ifndef _LINUX_OF_H |
2 | #define _LINUX_OF_H | |
3 | /* | |
4 | * Definitions for talking to the Open Firmware PROM on | |
5 | * Power Macintosh and other computers. | |
6 | * | |
7 | * Copyright (C) 1996-2005 Paul Mackerras. | |
8 | * | |
9 | * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp. | |
10 | * Updates for SPARC64 by David S. Miller | |
11 | * Derived from PowerPC and Sparc prom.h files by Stephen Rothwell, IBM Corp. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License | |
15 | * as published by the Free Software Foundation; either version | |
16 | * 2 of the License, or (at your option) any later version. | |
17 | */ | |
18 | #include <linux/types.h> | |
1977f032 | 19 | #include <linux/bitops.h> |
6f192492 | 20 | #include <linux/kref.h> |
283029d1 | 21 | #include <linux/mod_devicetable.h> |
76c1ce78 | 22 | |
731581e6 GL |
23 | typedef u32 phandle; |
24 | typedef u32 ihandle; | |
25 | ||
26 | struct property { | |
27 | char *name; | |
28 | int length; | |
29 | void *value; | |
30 | struct property *next; | |
31 | unsigned long _flags; | |
32 | unsigned int unique_id; | |
33 | }; | |
34 | ||
6f192492 GL |
35 | #if defined(CONFIG_SPARC) |
36 | struct of_irq_controller; | |
37 | #endif | |
38 | ||
39 | struct device_node { | |
40 | const char *name; | |
41 | const char *type; | |
42 | phandle node; | |
43 | #if !defined(CONFIG_SPARC) | |
44 | phandle linux_phandle; | |
45 | #endif | |
46 | char *full_name; | |
47 | ||
48 | struct property *properties; | |
49 | struct property *deadprops; /* removed properties */ | |
50 | struct device_node *parent; | |
51 | struct device_node *child; | |
52 | struct device_node *sibling; | |
53 | struct device_node *next; /* next device of same type */ | |
54 | struct device_node *allnext; /* next in list of all nodes */ | |
55 | struct proc_dir_entry *pde; /* this node's proc directory */ | |
56 | struct kref kref; | |
57 | unsigned long _flags; | |
58 | void *data; | |
59 | #if defined(CONFIG_SPARC) | |
60 | char *path_component_name; | |
61 | unsigned int unique_id; | |
62 | struct of_irq_controller *irq_trans; | |
63 | #endif | |
64 | }; | |
65 | ||
50436312 GL |
66 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
67 | { | |
68 | return test_bit(flag, &n->_flags); | |
69 | } | |
70 | ||
71 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
72 | { | |
73 | set_bit(flag, &n->_flags); | |
74 | } | |
75 | ||
76 | static inline void | |
77 | set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de) | |
78 | { | |
79 | dn->pde = de; | |
80 | } | |
81 | ||
e91edcf5 GL |
82 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
83 | ||
526b5b3e GL |
84 | #if defined(CONFIG_SPARC) |
85 | /* Dummy ref counting routines - to be implemented later */ | |
86 | static inline struct device_node *of_node_get(struct device_node *node) | |
87 | { | |
88 | return node; | |
89 | } | |
90 | static inline void of_node_put(struct device_node *node) | |
91 | { | |
92 | } | |
93 | ||
94 | #else | |
526b5b3e GL |
95 | extern struct device_node *of_node_get(struct device_node *node); |
96 | extern void of_node_put(struct device_node *node); | |
97 | #endif | |
98 | ||
b6caf2ad GL |
99 | /* |
100 | * OF address retreival & translation | |
101 | */ | |
102 | ||
103 | /* Helper to read a big number; size is in cells (not bytes) */ | |
104 | static inline u64 of_read_number(const u32 *cell, int size) | |
105 | { | |
106 | u64 r = 0; | |
107 | while (size--) | |
108 | r = (r << 32) | *(cell++); | |
109 | return r; | |
110 | } | |
111 | ||
112 | /* Like of_read_number, but we want an unsigned long result */ | |
113 | #ifdef CONFIG_PPC32 | |
114 | static inline unsigned long of_read_ulong(const u32 *cell, int size) | |
115 | { | |
116 | return cell[size-1]; | |
117 | } | |
118 | #else | |
119 | #define of_read_ulong(cell, size) of_read_number(cell, size) | |
120 | #endif | |
121 | ||
76c1ce78 SR |
122 | #include <asm/prom.h> |
123 | ||
124 | /* flag descriptions */ | |
125 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
126 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
127 | ||
61e955db GL |
128 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
129 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
130 | ||
76c1ce78 SR |
131 | #define OF_BAD_ADDR ((u64)-1) |
132 | ||
133 | extern struct device_node *of_find_node_by_name(struct device_node *from, | |
134 | const char *name); | |
135 | #define for_each_node_by_name(dn, name) \ | |
136 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
137 | dn = of_find_node_by_name(dn, name)) | |
138 | extern struct device_node *of_find_node_by_type(struct device_node *from, | |
139 | const char *type); | |
140 | #define for_each_node_by_type(dn, type) \ | |
141 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
142 | dn = of_find_node_by_type(dn, type)) | |
143 | extern struct device_node *of_find_compatible_node(struct device_node *from, | |
144 | const char *type, const char *compat); | |
145 | #define for_each_compatible_node(dn, type, compatible) \ | |
146 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
147 | dn = of_find_compatible_node(dn, type, compatible)) | |
283029d1 GL |
148 | extern struct device_node *of_find_matching_node(struct device_node *from, |
149 | const struct of_device_id *matches); | |
150 | #define for_each_matching_node(dn, matches) \ | |
151 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
152 | dn = of_find_matching_node(dn, matches)) | |
76c1ce78 SR |
153 | extern struct device_node *of_find_node_by_path(const char *path); |
154 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
155 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 156 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
157 | extern struct device_node *of_get_next_child(const struct device_node *node, |
158 | struct device_node *prev); | |
aabc08dc ME |
159 | #define for_each_child_of_node(parent, child) \ |
160 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
161 | child = of_get_next_child(parent, child)) | |
162 | ||
1e291b14 ME |
163 | extern struct device_node *of_find_node_with_property( |
164 | struct device_node *from, const char *prop_name); | |
165 | #define for_each_node_with_property(dn, prop_name) \ | |
166 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
167 | dn = of_find_node_with_property(dn, prop_name)) | |
168 | ||
76c1ce78 SR |
169 | extern struct property *of_find_property(const struct device_node *np, |
170 | const char *name, | |
171 | int *lenp); | |
172 | extern int of_device_is_compatible(const struct device_node *device, | |
173 | const char *); | |
834d97d4 | 174 | extern int of_device_is_available(const struct device_node *device); |
76c1ce78 SR |
175 | extern const void *of_get_property(const struct device_node *node, |
176 | const char *name, | |
177 | int *lenp); | |
76c1ce78 SR |
178 | extern int of_n_addr_cells(struct device_node *np); |
179 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
180 | extern const struct of_device_id *of_match_node( |
181 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 182 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
739649c5 GL |
183 | extern struct device_node *of_parse_phandle(struct device_node *np, |
184 | const char *phandle_name, | |
185 | int index); | |
64b60e09 AV |
186 | extern int of_parse_phandles_with_args(struct device_node *np, |
187 | const char *list_name, const char *cells_name, int index, | |
188 | struct device_node **out_node, const void **out_args); | |
76c1ce78 SR |
189 | |
190 | #endif /* _LINUX_OF_H */ |