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af6074fc | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
ced4eec9 SM |
2 | #ifndef _LINUX_OF_PRIVATE_H |
3 | #define _LINUX_OF_PRIVATE_H | |
4 | /* | |
5 | * Private symbols used by OF support code | |
6 | * | |
7 | * Paul Mackerras August 1996. | |
8 | * Copyright (C) 1996-2005 Paul Mackerras. | |
ced4eec9 SM |
9 | */ |
10 | ||
11 | /** | |
12 | * struct alias_prop - Alias property in 'aliases' node | |
13 | * @link: List node to link the structure in aliases_lookup list | |
14 | * @alias: Alias property name | |
15 | * @np: Pointer to device_node that the alias stands for | |
16 | * @id: Index value from end of alias name | |
17 | * @stem: Alias string without the index | |
18 | * | |
19 | * The structure represents one alias property of 'aliases' node as | |
20 | * an entry in aliases_lookup list. | |
21 | */ | |
22 | struct alias_prop { | |
23 | struct list_head link; | |
24 | const char *alias; | |
25 | struct device_node *np; | |
26 | int id; | |
27 | char stem[0]; | |
28 | }; | |
29 | ||
00b7d1cf RH |
30 | #if defined(CONFIG_SPARC) |
31 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2 | |
32 | #else | |
33 | #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 | |
34 | #endif | |
35 | ||
36 | #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 | |
37 | ||
c05aba2b | 38 | extern struct mutex of_mutex; |
ced4eec9 | 39 | extern struct list_head aliases_lookup; |
8a2b22a2 GL |
40 | extern struct kset *of_kset; |
41 | ||
6afc0dc3 GL |
42 | #if defined(CONFIG_OF_DYNAMIC) |
43 | extern int of_property_notify(int action, struct device_node *np, | |
259092a3 | 44 | struct property *prop, struct property *old_prop); |
6afc0dc3 | 45 | extern void of_node_release(struct kobject *kobj); |
24789c5c FR |
46 | extern int __of_changeset_apply_entries(struct of_changeset *ocs, |
47 | int *ret_revert); | |
48 | extern int __of_changeset_apply_notify(struct of_changeset *ocs); | |
49 | extern int __of_changeset_revert_entries(struct of_changeset *ocs, | |
50 | int *ret_apply); | |
51 | extern int __of_changeset_revert_notify(struct of_changeset *ocs); | |
6afc0dc3 GL |
52 | #else /* CONFIG_OF_DYNAMIC */ |
53 | static inline int of_property_notify(int action, struct device_node *np, | |
259092a3 | 54 | struct property *prop, struct property *old_prop) |
6afc0dc3 GL |
55 | { |
56 | return 0; | |
57 | } | |
58 | #endif /* CONFIG_OF_DYNAMIC */ | |
59 | ||
b56b5528 RH |
60 | #if defined(CONFIG_OF_KOBJ) |
61 | int of_node_is_attached(struct device_node *node); | |
62 | int __of_add_property_sysfs(struct device_node *np, struct property *pp); | |
63 | void __of_remove_property_sysfs(struct device_node *np, struct property *prop); | |
64 | void __of_update_property_sysfs(struct device_node *np, struct property *newprop, | |
65 | struct property *oldprop); | |
66 | int __of_attach_node_sysfs(struct device_node *np); | |
67 | void __of_detach_node_sysfs(struct device_node *np); | |
68 | #else | |
69 | static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp) | |
70 | { | |
71 | return 0; | |
72 | } | |
73 | static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {} | |
74 | static inline void __of_update_property_sysfs(struct device_node *np, | |
75 | struct property *newprop, struct property *oldprop) {} | |
76 | static inline int __of_attach_node_sysfs(struct device_node *np) | |
77 | { | |
78 | return 0; | |
79 | } | |
80 | static inline void __of_detach_node_sysfs(struct device_node *np) {} | |
81 | #endif | |
82 | ||
f948d6d8 FR |
83 | #if defined(CONFIG_OF_RESOLVE) |
84 | int of_resolve_phandles(struct device_node *tree); | |
85 | #endif | |
86 | ||
5801169a FR |
87 | #if defined(CONFIG_OF_DYNAMIC) |
88 | void __of_free_phandle_cache_entry(phandle handle); | |
89 | #endif | |
90 | ||
f948d6d8 FR |
91 | #if defined(CONFIG_OF_OVERLAY) |
92 | void of_overlay_mutex_lock(void); | |
93 | void of_overlay_mutex_unlock(void); | |
b9952b52 FR |
94 | int of_free_phandle_cache(void); |
95 | void of_populate_phandle_cache(void); | |
f948d6d8 FR |
96 | #else |
97 | static inline void of_overlay_mutex_lock(void) {}; | |
98 | static inline void of_overlay_mutex_unlock(void) {}; | |
99 | #endif | |
100 | ||
5d4dd65b | 101 | #if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY) |
81d0848f FR |
102 | extern void __init unittest_unflatten_overlay_base(void); |
103 | #else | |
104 | static inline void unittest_unflatten_overlay_base(void) {}; | |
105 | #endif | |
106 | ||
107 | extern void *__unflatten_device_tree(const void *blob, | |
108 | struct device_node *dad, | |
109 | struct device_node **mynodes, | |
110 | void *(*dt_alloc)(u64 size, u64 align), | |
111 | bool detached); | |
112 | ||
69843396 PA |
113 | /** |
114 | * General utilities for working with live trees. | |
115 | * | |
116 | * All functions with two leading underscores operate | |
117 | * without taking node references, so you either have to | |
118 | * own the devtree lock or work on detached trees only. | |
119 | */ | |
120 | struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags); | |
b89dae18 FR |
121 | struct device_node *__of_node_dup(const struct device_node *np, |
122 | const char *full_name); | |
69843396 | 123 | |
e0a58f3e FR |
124 | struct device_node *__of_find_node_by_path(struct device_node *parent, |
125 | const char *path); | |
27497e11 RH |
126 | struct device_node *__of_find_node_by_full_path(struct device_node *node, |
127 | const char *path); | |
128 | ||
a25095d4 GL |
129 | extern const void *__of_get_property(const struct device_node *np, |
130 | const char *name, int *lenp); | |
d8c50088 | 131 | extern int __of_add_property(struct device_node *np, struct property *prop); |
8a2b22a2 GL |
132 | extern int __of_add_property_sysfs(struct device_node *np, |
133 | struct property *prop); | |
d8c50088 | 134 | extern int __of_remove_property(struct device_node *np, struct property *prop); |
8a2b22a2 GL |
135 | extern void __of_remove_property_sysfs(struct device_node *np, |
136 | struct property *prop); | |
d8c50088 PA |
137 | extern int __of_update_property(struct device_node *np, |
138 | struct property *newprop, struct property **oldprop); | |
8a2b22a2 GL |
139 | extern void __of_update_property_sysfs(struct device_node *np, |
140 | struct property *newprop, struct property *oldprop); | |
d8c50088 | 141 | |
8a2b22a2 | 142 | extern int __of_attach_node_sysfs(struct device_node *np); |
d8c50088 | 143 | extern void __of_detach_node(struct device_node *np); |
8a2b22a2 | 144 | extern void __of_detach_node_sysfs(struct device_node *np); |
d8c50088 | 145 | |
d9fc8807 FR |
146 | extern void __of_sysfs_remove_bin_file(struct device_node *np, |
147 | struct property *prop); | |
148 | ||
0b3ce78e FR |
149 | /* illegal phandle value (set when unresolved) */ |
150 | #define OF_PHANDLE_ILLEGAL 0xdeadbeef | |
151 | ||
201c910b PA |
152 | /* iterators for transactions, used for overlays */ |
153 | /* forward iterator */ | |
154 | #define for_each_transaction_entry(_oft, _te) \ | |
155 | list_for_each_entry(_te, &(_oft)->te_list, node) | |
156 | ||
157 | /* reverse iterator */ | |
158 | #define for_each_transaction_entry_reverse(_oft, _te) \ | |
159 | list_for_each_entry_reverse(_te, &(_oft)->te_list, node) | |
160 | ||
ced4eec9 | 161 | #endif /* _LINUX_OF_PRIVATE_H */ |