Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _LINUX_SWSUSP_H |
2 | #define _LINUX_SWSUSP_H | |
3 | ||
543b9fd3 | 4 | #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) || defined(CONFIG_PPC64) |
1da177e4 LT |
5 | #include <asm/suspend.h> |
6 | #endif | |
7 | #include <linux/swap.h> | |
8 | #include <linux/notifier.h> | |
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/pm.h> | |
7be98234 | 11 | #include <linux/mm.h> |
1da177e4 | 12 | |
8357376d RW |
13 | /* struct pbe is used for creating lists of pages that should be restored |
14 | * atomically during the resume from disk, because the page frames they have | |
15 | * occupied before the suspend are in use. | |
16 | */ | |
dcbb5a54 | 17 | struct pbe { |
8357376d RW |
18 | void *address; /* address of the copy */ |
19 | void *orig_address; /* original address of a page */ | |
7088a5c0 | 20 | struct pbe *next; |
dcbb5a54 | 21 | }; |
1da177e4 | 22 | |
1da177e4 LT |
23 | /* mm/page_alloc.c */ |
24 | extern void drain_local_pages(void); | |
25 | extern void mark_free_pages(struct zone *zone); | |
26 | ||
74dfd666 | 27 | #if defined(CONFIG_PM) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) |
46cd2f32 RW |
28 | extern int pm_prepare_console(void); |
29 | extern void pm_restore_console(void); | |
30 | #else | |
31 | static inline int pm_prepare_console(void) { return 0; } | |
32 | static inline void pm_restore_console(void) {} | |
74dfd666 RW |
33 | #endif |
34 | ||
a3d25c27 RW |
35 | /** |
36 | * struct hibernation_ops - hibernation platform support | |
37 | * | |
38 | * The methods in this structure allow a platform to override the default | |
39 | * mechanism of shutting down the machine during a hibernation transition. | |
40 | * | |
41 | * All three methods must be assigned. | |
42 | * | |
43 | * @prepare: prepare system for hibernation | |
44 | * @enter: shut down system after state has been saved to disk | |
45 | * @finish: finish/clean up after state has been reloaded | |
a634cc10 RW |
46 | * @pre_restore: prepare system for the restoration from a hibernation image |
47 | * @restore_cleanup: clean up after a failing image restoration | |
a3d25c27 RW |
48 | */ |
49 | struct hibernation_ops { | |
50 | int (*prepare)(void); | |
51 | int (*enter)(void); | |
52 | void (*finish)(void); | |
a634cc10 RW |
53 | int (*pre_restore)(void); |
54 | void (*restore_cleanup)(void); | |
a3d25c27 RW |
55 | }; |
56 | ||
b10d9117 RW |
57 | #ifdef CONFIG_PM |
58 | #ifdef CONFIG_SOFTWARE_SUSPEND | |
74dfd666 | 59 | /* kernel/power/snapshot.c */ |
940d67f6 JB |
60 | extern void __register_nosave_region(unsigned long b, unsigned long e, int km); |
61 | static inline void register_nosave_region(unsigned long b, unsigned long e) | |
62 | { | |
63 | __register_nosave_region(b, e, 0); | |
64 | } | |
65 | static inline void register_nosave_region_late(unsigned long b, unsigned long e) | |
66 | { | |
67 | __register_nosave_region(b, e, 1); | |
68 | } | |
74dfd666 RW |
69 | extern int swsusp_page_is_forbidden(struct page *); |
70 | extern void swsusp_set_page_free(struct page *); | |
71 | extern void swsusp_unset_page_free(struct page *); | |
72 | extern unsigned long get_safe_page(gfp_t gfp_mask); | |
a3d25c27 RW |
73 | |
74 | extern void hibernation_set_ops(struct hibernation_ops *ops); | |
75 | extern int hibernate(void); | |
b10d9117 | 76 | #else /* CONFIG_SOFTWARE_SUSPEND */ |
74dfd666 RW |
77 | static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } |
78 | static inline void swsusp_set_page_free(struct page *p) {} | |
79 | static inline void swsusp_unset_page_free(struct page *p) {} | |
a3d25c27 RW |
80 | |
81 | static inline void hibernation_set_ops(struct hibernation_ops *ops) {} | |
82 | static inline int hibernate(void) { return -ENOSYS; } | |
b10d9117 | 83 | #endif /* CONFIG_SOFTWARE_SUSPEND */ |
1da177e4 | 84 | |
1da177e4 LT |
85 | void save_processor_state(void); |
86 | void restore_processor_state(void); | |
87 | struct saved_context; | |
88 | void __save_processor_state(struct saved_context *ctxt); | |
89 | void __restore_processor_state(struct saved_context *ctxt); | |
25761b6e | 90 | |
b10d9117 RW |
91 | /* kernel/power/main.c */ |
92 | extern struct blocking_notifier_head pm_chain_head; | |
93 | ||
94 | static inline int register_pm_notifier(struct notifier_block *nb) | |
95 | { | |
96 | return blocking_notifier_chain_register(&pm_chain_head, nb); | |
97 | } | |
98 | ||
99 | static inline int unregister_pm_notifier(struct notifier_block *nb) | |
100 | { | |
101 | return blocking_notifier_chain_unregister(&pm_chain_head, nb); | |
102 | } | |
103 | ||
104 | #define pm_notifier(fn, pri) { \ | |
105 | static struct notifier_block fn##_nb = \ | |
106 | { .notifier_call = fn, .priority = pri }; \ | |
107 | register_pm_notifier(&fn##_nb); \ | |
108 | } | |
109 | #else /* CONFIG_PM */ | |
110 | ||
111 | static inline int register_pm_notifier(struct notifier_block *nb) | |
112 | { | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static inline int unregister_pm_notifier(struct notifier_block *nb) | |
117 | { | |
118 | return 0; | |
119 | } | |
120 | ||
121 | #define pm_notifier(fn, pri) do { (void)(fn); } while (0) | |
122 | #endif /* CONFIG_PM */ | |
123 | ||
124 | #if !defined CONFIG_SOFTWARE_SUSPEND || !defined(CONFIG_PM) | |
125 | static inline void register_nosave_region(unsigned long b, unsigned long e) | |
126 | { | |
127 | } | |
128 | #endif | |
129 | ||
1da177e4 | 130 | #endif /* _LINUX_SWSUSP_H */ |