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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 | |
2e89e685 JK |
23 | #include <asm/byteorder.h> |
24 | ||
9dfbf207 JK |
25 | #ifdef CONFIG_OF |
26 | ||
731581e6 GL |
27 | typedef u32 phandle; |
28 | typedef u32 ihandle; | |
29 | ||
30 | struct property { | |
31 | char *name; | |
32 | int length; | |
33 | void *value; | |
34 | struct property *next; | |
35 | unsigned long _flags; | |
36 | unsigned int unique_id; | |
37 | }; | |
38 | ||
6f192492 GL |
39 | #if defined(CONFIG_SPARC) |
40 | struct of_irq_controller; | |
41 | #endif | |
42 | ||
43 | struct device_node { | |
44 | const char *name; | |
45 | const char *type; | |
6016a363 | 46 | phandle phandle; |
6f192492 GL |
47 | char *full_name; |
48 | ||
49 | struct property *properties; | |
50 | struct property *deadprops; /* removed properties */ | |
51 | struct device_node *parent; | |
52 | struct device_node *child; | |
53 | struct device_node *sibling; | |
54 | struct device_node *next; /* next device of same type */ | |
55 | struct device_node *allnext; /* next in list of all nodes */ | |
56 | struct proc_dir_entry *pde; /* this node's proc directory */ | |
57 | struct kref kref; | |
58 | unsigned long _flags; | |
59 | void *data; | |
60 | #if defined(CONFIG_SPARC) | |
61 | char *path_component_name; | |
62 | unsigned int unique_id; | |
63 | struct of_irq_controller *irq_trans; | |
64 | #endif | |
65 | }; | |
66 | ||
41f88009 GL |
67 | /* Pointer for first entry in chain of all nodes. */ |
68 | extern struct device_node *allnodes; | |
69 | ||
50436312 GL |
70 | static inline int of_node_check_flag(struct device_node *n, unsigned long flag) |
71 | { | |
72 | return test_bit(flag, &n->_flags); | |
73 | } | |
74 | ||
75 | static inline void of_node_set_flag(struct device_node *n, unsigned long flag) | |
76 | { | |
77 | set_bit(flag, &n->_flags); | |
78 | } | |
79 | ||
e91edcf5 GL |
80 | extern struct device_node *of_find_all_nodes(struct device_node *prev); |
81 | ||
526b5b3e GL |
82 | #if defined(CONFIG_SPARC) |
83 | /* Dummy ref counting routines - to be implemented later */ | |
84 | static inline struct device_node *of_node_get(struct device_node *node) | |
85 | { | |
86 | return node; | |
87 | } | |
88 | static inline void of_node_put(struct device_node *node) | |
89 | { | |
90 | } | |
91 | ||
92 | #else | |
526b5b3e GL |
93 | extern struct device_node *of_node_get(struct device_node *node); |
94 | extern void of_node_put(struct device_node *node); | |
95 | #endif | |
96 | ||
b6caf2ad GL |
97 | /* |
98 | * OF address retreival & translation | |
99 | */ | |
100 | ||
101 | /* Helper to read a big number; size is in cells (not bytes) */ | |
2e89e685 | 102 | static inline u64 of_read_number(const __be32 *cell, int size) |
b6caf2ad GL |
103 | { |
104 | u64 r = 0; | |
105 | while (size--) | |
2e89e685 | 106 | r = (r << 32) | be32_to_cpu(*(cell++)); |
b6caf2ad GL |
107 | return r; |
108 | } | |
109 | ||
110 | /* Like of_read_number, but we want an unsigned long result */ | |
2e89e685 | 111 | static inline unsigned long of_read_ulong(const __be32 *cell, int size) |
b6caf2ad | 112 | { |
2be09cb9 GL |
113 | /* toss away upper bits if unsigned long is smaller than u64 */ |
114 | return of_read_number(cell, size); | |
b6caf2ad | 115 | } |
b6caf2ad | 116 | |
76c1ce78 SR |
117 | #include <asm/prom.h> |
118 | ||
119 | /* flag descriptions */ | |
120 | #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ | |
121 | #define OF_DETACHED 2 /* node has been detached from the device tree */ | |
122 | ||
61e955db GL |
123 | #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) |
124 | #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) | |
125 | ||
76c1ce78 SR |
126 | #define OF_BAD_ADDR ((u64)-1) |
127 | ||
128 | extern struct device_node *of_find_node_by_name(struct device_node *from, | |
129 | const char *name); | |
130 | #define for_each_node_by_name(dn, name) \ | |
131 | for (dn = of_find_node_by_name(NULL, name); dn; \ | |
132 | dn = of_find_node_by_name(dn, name)) | |
133 | extern struct device_node *of_find_node_by_type(struct device_node *from, | |
134 | const char *type); | |
135 | #define for_each_node_by_type(dn, type) \ | |
136 | for (dn = of_find_node_by_type(NULL, type); dn; \ | |
137 | dn = of_find_node_by_type(dn, type)) | |
138 | extern struct device_node *of_find_compatible_node(struct device_node *from, | |
139 | const char *type, const char *compat); | |
140 | #define for_each_compatible_node(dn, type, compatible) \ | |
141 | for (dn = of_find_compatible_node(NULL, type, compatible); dn; \ | |
142 | dn = of_find_compatible_node(dn, type, compatible)) | |
283029d1 GL |
143 | extern struct device_node *of_find_matching_node(struct device_node *from, |
144 | const struct of_device_id *matches); | |
145 | #define for_each_matching_node(dn, matches) \ | |
146 | for (dn = of_find_matching_node(NULL, matches); dn; \ | |
147 | dn = of_find_matching_node(dn, matches)) | |
76c1ce78 SR |
148 | extern struct device_node *of_find_node_by_path(const char *path); |
149 | extern struct device_node *of_find_node_by_phandle(phandle handle); | |
150 | extern struct device_node *of_get_parent(const struct device_node *node); | |
f4eb0107 | 151 | extern struct device_node *of_get_next_parent(struct device_node *node); |
76c1ce78 SR |
152 | extern struct device_node *of_get_next_child(const struct device_node *node, |
153 | struct device_node *prev); | |
aabc08dc ME |
154 | #define for_each_child_of_node(parent, child) \ |
155 | for (child = of_get_next_child(parent, NULL); child != NULL; \ | |
156 | child = of_get_next_child(parent, child)) | |
157 | ||
1e291b14 ME |
158 | extern struct device_node *of_find_node_with_property( |
159 | struct device_node *from, const char *prop_name); | |
160 | #define for_each_node_with_property(dn, prop_name) \ | |
161 | for (dn = of_find_node_with_property(NULL, prop_name); dn; \ | |
162 | dn = of_find_node_with_property(dn, prop_name)) | |
163 | ||
76c1ce78 SR |
164 | extern struct property *of_find_property(const struct device_node *np, |
165 | const char *name, | |
166 | int *lenp); | |
167 | extern int of_device_is_compatible(const struct device_node *device, | |
168 | const char *); | |
834d97d4 | 169 | extern int of_device_is_available(const struct device_node *device); |
76c1ce78 SR |
170 | extern const void *of_get_property(const struct device_node *node, |
171 | const char *name, | |
172 | int *lenp); | |
76c1ce78 SR |
173 | extern int of_n_addr_cells(struct device_node *np); |
174 | extern int of_n_size_cells(struct device_node *np); | |
283029d1 GL |
175 | extern const struct of_device_id *of_match_node( |
176 | const struct of_device_id *matches, const struct device_node *node); | |
3f07af49 | 177 | extern int of_modalias_node(struct device_node *node, char *modalias, int len); |
739649c5 GL |
178 | extern struct device_node *of_parse_phandle(struct device_node *np, |
179 | const char *phandle_name, | |
180 | int index); | |
64b60e09 AV |
181 | extern int of_parse_phandles_with_args(struct device_node *np, |
182 | const char *list_name, const char *cells_name, int index, | |
183 | struct device_node **out_node, const void **out_args); | |
76c1ce78 | 184 | |
21b082ec GL |
185 | extern int of_machine_is_compatible(const char *compat); |
186 | ||
187 | extern int prom_add_property(struct device_node* np, struct property* prop); | |
188 | extern int prom_remove_property(struct device_node *np, struct property *prop); | |
189 | extern int prom_update_property(struct device_node *np, | |
190 | struct property *newprop, | |
191 | struct property *oldprop); | |
192 | ||
fcdeb7fe GL |
193 | #if defined(CONFIG_OF_DYNAMIC) |
194 | /* For updating the device tree at runtime */ | |
195 | extern void of_attach_node(struct device_node *); | |
196 | extern void of_detach_node(struct device_node *); | |
197 | #endif | |
198 | ||
9dfbf207 | 199 | #endif /* CONFIG_OF */ |
76c1ce78 | 200 | #endif /* _LINUX_OF_H */ |