[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / power / power.h

#include <linux/suspend.h>
#include <linux/suspend_ioctls.h>
#include <linux/utsname.h>
#include <linux/freezer.h>

struct swsusp_info {
	struct new_utsname	uts;
	u32			version_code;
	unsigned long		num_physpages;
	int			cpus;
	unsigned long		image_pages;
	unsigned long		pages;
	unsigned long		size;
} __attribute__((aligned(PAGE_SIZE)));

#ifdef CONFIG_HIBERNATION
/* kernel/power/snapshot.c */
extern void __init hibernate_reserved_size_init(void);
extern void __init hibernate_image_size_init(void);

#ifdef CONFIG_ARCH_HIBERNATION_HEADER
/* Maximum size of architecture specific data in a hibernation header */
#define MAX_ARCH_HEADER_SIZE	(sizeof(struct new_utsname) + 4)

extern int arch_hibernation_header_save(void *addr, unsigned int max_size);
extern int arch_hibernation_header_restore(void *addr);

static inline int init_header_complete(struct swsusp_info *info)
{
	return arch_hibernation_header_save(info, MAX_ARCH_HEADER_SIZE);
}

static inline char *check_image_kernel(struct swsusp_info *info)
{
	return arch_hibernation_header_restore(info) ?
			"architecture specific data" : NULL;
}
#else
extern char *check_image_kernel(struct swsusp_info *info);
#endif /* CONFIG_ARCH_HIBERNATION_HEADER */
extern int init_header(struct swsusp_info *info);

extern char resume_file[256];
/*
 * Keep some memory free so that I/O operations can succeed without paging
 * [Might this be more than 4 MB?]
 */
#define PAGES_FOR_IO	((4096 * 1024) >> PAGE_SHIFT)

/*
 * Keep 1 MB of memory free so that device drivers can allocate some pages in
 * their .suspend() routines without breaking the suspend to disk.
 */
#define SPARE_PAGES	((1024 * 1024) >> PAGE_SHIFT)

/* kernel/power/hibernate.c */
extern bool freezer_test_done;

extern int hibernation_snapshot(int platform_mode);
extern int hibernation_restore(int platform_mode);
extern int hibernation_platform_enter(void);
extern void platform_recover(int platform_mode);

#else /* !CONFIG_HIBERNATION */

static inline void hibernate_reserved_size_init(void) {}
static inline void hibernate_image_size_init(void) {}
#endif /* !CONFIG_HIBERNATION */

extern int pfn_is_nosave(unsigned long);

#define power_attr(_name) \
static struct kobj_attribute _name##_attr = {	\
	.attr	= {				\
		.name = __stringify(_name),	\
		.mode = 0644,			\
	},					\
	.show	= _name##_show,			\
	.store	= _name##_store,		\
}

extern struct pbe *restore_pblist;

/* Preferred image size in bytes (default 500 MB) */
extern unsigned long image_size;
/* Size of memory reserved for drivers (default SPARE_PAGES x PAGE_SIZE) */
extern unsigned long reserved_size;
extern int in_suspend;
extern dev_t swsusp_resume_device;
extern sector_t swsusp_resume_block;

extern asmlinkage int swsusp_arch_suspend(void);
extern asmlinkage int swsusp_arch_resume(void);

extern int create_basic_memory_bitmaps(void);
extern void free_basic_memory_bitmaps(void);
extern int hibernate_preallocate_memory(void);

/**
 *	Auxiliary structure used for reading the snapshot image data and
 *	metadata from and writing them to the list of page backup entries
 *	(PBEs) which is the main data structure of swsusp.
 *
 *	Using struct snapshot_handle we can transfer the image, including its
 *	metadata, as a continuous sequence of bytes with the help of
 *	snapshot_read_next() and snapshot_write_next().
 *
 *	The code that writes the image to a storage or transfers it to
 *	the user land is required to use snapshot_read_next() for this
 *	purpose and it should not make any assumptions regarding the internal
 *	structure of the image.  Similarly, the code that reads the image from
 *	a storage or transfers it from the user land is required to use
 *	snapshot_write_next().
 *
 *	This may allow us to change the internal structure of the image
 *	in the future with considerably less effort.
 */

struct snapshot_handle {
	unsigned int	cur;	/* number of the block of PAGE_SIZE bytes the
				 * next operation will refer to (ie. current)
				 */
	void		*buffer;	/* address of the block to read from
					 * or write to
					 */
	int		sync_read;	/* Set to one to notify the caller of
					 * snapshot_write_next() that it may
					 * need to call wait_on_bio_chain()
					 */
};

/* This macro returns the address from/to which the caller of
 * snapshot_read_next()/snapshot_write_next() is allowed to
 * read/write data after the function returns
 */
#define data_of(handle)	((handle).buffer)

extern unsigned int snapshot_additional_pages(struct zone *zone);
extern unsigned long snapshot_get_image_size(void);
extern int snapshot_read_next(struct snapshot_handle *handle);
extern int snapshot_write_next(struct snapshot_handle *handle);
extern void snapshot_write_finalize(struct snapshot_handle *handle);
extern int snapshot_image_loaded(struct snapshot_handle *handle);

/* If unset, the snapshot device cannot be open. */
extern atomic_t snapshot_device_available;

extern sector_t alloc_swapdev_block(int swap);
extern void free_all_swap_pages(int swap);
extern int swsusp_swap_in_use(void);

/*
 * Flags that can be passed from the hibernatig hernel to the "boot" kernel in
 * the image header.
 */
#define SF_PLATFORM_MODE	1
#define SF_NOCOMPRESS_MODE	2
#define SF_CRC32_MODE	        4

/* kernel/power/hibernate.c */
extern int swsusp_check(void);
extern void swsusp_free(void);
extern int swsusp_read(unsigned int *flags_p);
extern int swsusp_write(unsigned int flags);
extern void swsusp_close(fmode_t);
#ifdef CONFIG_SUSPEND
extern int swsusp_unmark(void);
#endif

/* kernel/power/block_io.c */
extern struct block_device *hib_resume_bdev;

extern int hib_bio_read_page(pgoff_t page_off, void *addr,
		struct bio **bio_chain);
extern int hib_bio_write_page(pgoff_t page_off, void *addr,
		struct bio **bio_chain);
extern int hib_wait_on_bio_chain(struct bio **bio_chain);

struct timeval;
/* kernel/power/swsusp.c */
extern void swsusp_show_speed(struct timeval *, struct timeval *,
				unsigned int, char *);

#ifdef CONFIG_SUSPEND
struct pm_sleep_state {
	const char *label;
	suspend_state_t state;
};

/* kernel/power/suspend.c */
extern struct pm_sleep_state pm_states[];

extern bool valid_state(suspend_state_t state);
extern int suspend_devices_and_enter(suspend_state_t state);
#else /* !CONFIG_SUSPEND */
static inline int suspend_devices_and_enter(suspend_state_t state)
{
	return -ENOSYS;
}
static inline bool valid_state(suspend_state_t state) { return false; }
#endif /* !CONFIG_SUSPEND */

#ifdef CONFIG_PM_TEST_SUSPEND
/* kernel/power/suspend_test.c */
extern void suspend_test_start(void);
extern void suspend_test_finish(const char *label);
#else /* !CONFIG_PM_TEST_SUSPEND */
static inline void suspend_test_start(void) {}
static inline void suspend_test_finish(const char *label) {}
#endif /* !CONFIG_PM_TEST_SUSPEND */

#ifdef CONFIG_PM_SLEEP
/* kernel/power/main.c */
extern int pm_notifier_call_chain(unsigned long val);
#endif

#ifdef CONFIG_HIGHMEM
int restore_highmem(void);
#else
static inline unsigned int count_highmem_pages(void) { return 0; }
static inline int restore_highmem(void) { return 0; }
#endif

/*
 * Suspend test levels
 */
enum {
	/* keep first */
	TEST_NONE,
	TEST_CORE,
	TEST_CPUS,
	TEST_PLATFORM,
	TEST_DEVICES,
	TEST_FREEZER,
	/* keep last */
	__TEST_AFTER_LAST
};

#define TEST_FIRST	TEST_NONE
#define TEST_MAX	(__TEST_AFTER_LAST - 1)

extern int pm_test_level;

#ifdef CONFIG_SUSPEND_FREEZER
static inline int suspend_freeze_processes(void)
{
	int error;

	error = freeze_processes();
	/*
	 * freeze_processes() automatically thaws every task if freezing
	 * fails. So we need not do anything extra upon error.
	 */
	if (error)
		return error;

	error = freeze_kernel_threads();
	/*
	 * freeze_kernel_threads() thaws only kernel threads upon freezing
	 * failure. So we have to thaw the userspace tasks ourselves.
	 */
	if (error)
		thaw_processes();

	return error;
}

static inline void suspend_thaw_processes(void)
{
	thaw_processes();
}
#else
static inline int suspend_freeze_processes(void)
{
	return 0;
}

static inline void suspend_thaw_processes(void)
{
}
#endif

extern struct page *saveable_page(struct zone *z, unsigned long p);
#ifdef CONFIG_HIGHMEM
extern struct page *saveable_highmem_page(struct zone *z, unsigned long p);
#else
static
inline struct page *saveable_highmem_page(struct zone *z, unsigned long p)
{
	return NULL;
}
#endif

#define PBES_PER_PAGE (PAGE_SIZE / sizeof(struct pbe))
extern struct list_head nosave_regions;

/**
 *	This structure represents a range of page frames the contents of which
 *	should not be saved during the suspend.
 */

struct nosave_region {
	struct list_head list;
	unsigned long start_pfn;
	unsigned long end_pfn;
};

#define BM_END_OF_MAP	(~0UL)

#define BM_BITS_PER_BLOCK	(PAGE_SIZE * BITS_PER_BYTE)

struct bm_block {
	struct list_head hook;		/* hook into a list of bitmap blocks */
	unsigned long start_pfn;	/* pfn represented by the first bit */
	unsigned long end_pfn;	/* pfn represented by the last bit plus 1 */
	unsigned long *data;	/* bitmap representing pages */
};

/* struct bm_position is used for browsing memory bitmaps */

struct bm_position {
	struct bm_block *block;
	int bit;
};

struct memory_bitmap {
	struct list_head blocks;	/* list of bitmap blocks */
	struct linked_page *p_list;	/* list of pages used to store zone
					 * bitmap objects and bitmap block
					 * objects
					 */
	struct bm_position *states;	/* most recently used bit position */
	int num_states;			/* when iterating over a bitmap and
					 * number of states we support.
					 */
};

extern int memory_bm_create(struct memory_bitmap *bm, gfp_t gfp_mask,
		int safe_needed);
extern int memory_bm_create_index(struct memory_bitmap *bm, gfp_t gfp_mask,
		int safe_needed, int index);
extern void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free);
extern void memory_bm_set_bit(struct memory_bitmap *bm, unsigned long pfn);
extern void memory_bm_clear_bit(struct memory_bitmap *bm, unsigned long pfn);
extern void memory_bm_clear_bit_index(struct memory_bitmap *bm, unsigned long pfn, int index);
extern int memory_bm_test_bit(struct memory_bitmap *bm, unsigned long pfn);
extern int memory_bm_test_bit_index(struct memory_bitmap *bm, unsigned long pfn, int index);
extern unsigned long memory_bm_next_pfn(struct memory_bitmap *bm);
extern unsigned long memory_bm_next_pfn_index(struct memory_bitmap *bm,
		int index);
extern void memory_bm_position_reset(struct memory_bitmap *bm);
extern void memory_bm_clear(struct memory_bitmap *bm);
extern void memory_bm_copy(struct memory_bitmap *source,
		struct memory_bitmap *dest);
extern void memory_bm_dup(struct memory_bitmap *source,
		struct memory_bitmap *dest);
extern int memory_bm_set_iterators(struct memory_bitmap *bm, int number);

#ifdef CONFIG_TOI
struct toi_module_ops;
extern int memory_bm_read(struct memory_bitmap *bm, int (*rw_chunk)
	(int rw, struct toi_module_ops *owner, char *buffer, int buffer_size));
extern int memory_bm_write(struct memory_bitmap *bm, int (*rw_chunk)
	(int rw, struct toi_module_ops *owner, char *buffer, int buffer_size));
#endif

#ifdef CONFIG_PM_AUTOSLEEP

/* kernel/power/autosleep.c */
extern int pm_autosleep_init(void);
extern int pm_autosleep_lock(void);
extern void pm_autosleep_unlock(void);
extern suspend_state_t pm_autosleep_state(void);
extern int pm_autosleep_set_state(suspend_state_t state);

#else /* !CONFIG_PM_AUTOSLEEP */

static inline int pm_autosleep_init(void) { return 0; }
static inline int pm_autosleep_lock(void) { return 0; }
static inline void pm_autosleep_unlock(void) {}
static inline suspend_state_t pm_autosleep_state(void) { return PM_SUSPEND_ON; }

#endif /* !CONFIG_PM_AUTOSLEEP */

#ifdef CONFIG_EARLYSUSPEND
/* kernel/power/earlysuspend.c */
void request_suspend_state(suspend_state_t state);
suspend_state_t get_suspend_state(void);
//[MTK]
extern void suspend_syssync_enqueue(void) ;
extern void suspend_check_sys_sync_done(void);
#endif

#ifdef CONFIG_PM_WAKELOCKS

/* kernel/power/wakelock.c */
extern ssize_t pm_show_wakelocks(char *buf, bool show_active);
extern int pm_wake_lock(const char *buf);
extern int pm_wake_unlock(const char *buf);

#endif /* !CONFIG_PM_WAKELOCKS */
Commit	Line	Data
1da177e4	1	#include <linux/suspend.h>
3010f8ca	2	#include <linux/suspend_ioctls.h>
1da177e4	3	#include <linux/utsname.h>
b28f5081	4	#include <linux/freezer.h>
1da177e4	5
1da177e4 LT	6	struct swsusp_info {
	7	struct new_utsname uts;
	8	u32 version_code;
	9	unsigned long num_physpages;
	10	int cpus;
	11	unsigned long image_pages;
7088a5c0	12	unsigned long pages;
6e1819d6	13	unsigned long size;
1da177e4 LT	14	} __attribute__((aligned(PAGE_SIZE)));
1da177e4 LT	15
d307c4a8	16	#ifdef CONFIG_HIBERNATION
ac5c24ec	17	/* kernel/power/snapshot.c */
ddeb6487	18	extern void __init hibernate_reserved_size_init(void);
ac5c24ec RW	19	extern void __init hibernate_image_size_init(void);
ac5c24ec RW	20
d307c4a8 RW	21	#ifdef CONFIG_ARCH_HIBERNATION_HEADER
	22	/* Maximum size of architecture specific data in a hibernation header */
	23	#define MAX_ARCH_HEADER_SIZE (sizeof(struct new_utsname) + 4)
1da177e4	24
d307c4a8 RW	25	extern int arch_hibernation_header_save(void *addr, unsigned int max_size);
	26	extern int arch_hibernation_header_restore(void *addr);
	27
	28	static inline int init_header_complete(struct swsusp_info *info)
	29	{
	30	return arch_hibernation_header_save(info, MAX_ARCH_HEADER_SIZE);
	31	}
	32
	33	static inline char check_image_kernel(struct swsusp_info info)
	34	{
	35	return arch_hibernation_header_restore(info) ?
	36	"architecture specific data" : NULL;
	37	}
6fa3eb70 S	38	#else
6fa3eb70 S	39	extern char check_image_kernel(struct swsusp_info info);
d307c4a8	40	#endif /* CONFIG_ARCH_HIBERNATION_HEADER */
6fa3eb70	41	extern int init_header(struct swsusp_info *info);
1da177e4	42
6fa3eb70	43	extern char resume_file[256];
56f99bcb RW	44	/*
	45	* Keep some memory free so that I/O operations can succeed without paging
	46	* [Might this be more than 4 MB?]
	47	*/
	48	#define PAGES_FOR_IO ((4096 * 1024) >> PAGE_SHIFT)
d307c4a8	49
56f99bcb RW	50	/*
	51	* Keep 1 MB of memory free so that device drivers can allocate some pages in
	52	* their .suspend() routines without breaking the suspend to disk.
	53	*/
	54	#define SPARE_PAGES ((1024 * 1024) >> PAGE_SHIFT)
1da177e4	55
8b759b84	56	/* kernel/power/hibernate.c */
97819a26 SB	57	extern bool freezer_test_done;
97819a26 SB	58
7777fab9	59	extern int hibernation_snapshot(int platform_mode);
a634cc10	60	extern int hibernation_restore(int platform_mode);
7777fab9	61	extern int hibernation_platform_enter(void);
6fa3eb70	62	extern void platform_recover(int platform_mode);
ac5c24ec RW	63
	64	#else /* !CONFIG_HIBERNATION */
	65
ddeb6487	66	static inline void hibernate_reserved_size_init(void) {}
ac5c24ec RW	67	static inline void hibernate_image_size_init(void) {}
ac5c24ec RW	68	#endif /* !CONFIG_HIBERNATION */
a6d70980	69
49c3df6a VG	70	extern int pfn_is_nosave(unsigned long);
49c3df6a VG	71
1da177e4	72	#define power_attr(_name) \
386f275f	73	static struct kobj_attribute _name##_attr = { \
1da177e4 LT	74	.attr = { \
	75	.name = __stringify(_name), \
	76	.mode = 0644, \
	77	}, \
	78	.show = _name##_show, \
	79	.store = _name##_store, \
	80	}
	81
6fa3eb70 S	82	extern struct pbe *restore_pblist;
6fa3eb70 S	83
853609b6 RW	84	/* Preferred image size in bytes (default 500 MB) */
853609b6 RW	85	extern unsigned long image_size;
ddeb6487 RW	86	/* Size of memory reserved for drivers (default SPARE_PAGES x PAGE_SIZE) */
ddeb6487 RW	87	extern unsigned long reserved_size;
f577eb30	88	extern int in_suspend;
61159a31	89	extern dev_t swsusp_resume_device;
9a154d9d	90	extern sector_t swsusp_resume_block;
f577eb30	91
25761b6e RW	92	extern asmlinkage int swsusp_arch_suspend(void);
	93	extern asmlinkage int swsusp_arch_resume(void);
	94
74dfd666 RW	95	extern int create_basic_memory_bitmaps(void);
74dfd666 RW	96	extern void free_basic_memory_bitmaps(void);
64a473cb	97	extern int hibernate_preallocate_memory(void);
f577eb30	98
fb13a28b RW	99	/**
	100	* Auxiliary structure used for reading the snapshot image data and
	101	* metadata from and writing them to the list of page backup entries
	102	* (PBEs) which is the main data structure of swsusp.
	103	*
	104	* Using struct snapshot_handle we can transfer the image, including its
	105	* metadata, as a continuous sequence of bytes with the help of
	106	* snapshot_read_next() and snapshot_write_next().
	107	*
	108	* The code that writes the image to a storage or transfers it to
	109	* the user land is required to use snapshot_read_next() for this
	110	* purpose and it should not make any assumptions regarding the internal
	111	* structure of the image. Similarly, the code that reads the image from
	112	* a storage or transfers it from the user land is required to use
	113	* snapshot_write_next().
	114	*
	115	* This may allow us to change the internal structure of the image
	116	* in the future with considerably less effort.
	117	*/
	118
f577eb30	119	struct snapshot_handle {
fb13a28b RW	120	unsigned int cur; /* number of the block of PAGE_SIZE bytes the
	121	* next operation will refer to (ie. current)
	122	*/
fb13a28b RW	123	void buffer; / address of the block to read from
	124	* or write to
	125	*/
fb13a28b RW	126	int sync_read; /* Set to one to notify the caller of
	127	* snapshot_write_next() that it may
	128	* need to call wait_on_bio_chain()
	129	*/
f577eb30 RW	130	};
f577eb30 RW	131
fb13a28b RW	132	/* This macro returns the address from/to which the caller of
	133	* snapshot_read_next()/snapshot_write_next() is allowed to
	134	* read/write data after the function returns
	135	*/
d3c1b24c	136	#define data_of(handle) ((handle).buffer)
f577eb30	137
b788db79	138	extern unsigned int snapshot_additional_pages(struct zone *zone);
af508b34	139	extern unsigned long snapshot_get_image_size(void);
d3c1b24c JS	140	extern int snapshot_read_next(struct snapshot_handle *handle);
d3c1b24c JS	141	extern int snapshot_write_next(struct snapshot_handle *handle);
8357376d	142	extern void snapshot_write_finalize(struct snapshot_handle *handle);
b788db79	143	extern int snapshot_image_loaded(struct snapshot_handle *handle);
61159a31	144
0709db60 RW	145	/* If unset, the snapshot device cannot be open. */
	146	extern atomic_t snapshot_device_available;
	147
d1d241cc RW	148	extern sector_t alloc_swapdev_block(int swap);
	149	extern void free_all_swap_pages(int swap);
	150	extern int swsusp_swap_in_use(void);
61159a31	151
a634cc10 RW	152	/*
	153	* Flags that can be passed from the hibernatig hernel to the "boot" kernel in
	154	* the image header.
	155	*/
	156	#define SF_PLATFORM_MODE 1
f996fc96	157	#define SF_NOCOMPRESS_MODE 2
081a9d04	158	#define SF_CRC32_MODE 4
a634cc10	159
8b759b84	160	/* kernel/power/hibernate.c */
74c7e2ef	161	extern int swsusp_check(void);
74c7e2ef	162	extern void swsusp_free(void);
a634cc10 RW	163	extern int swsusp_read(unsigned int *flags_p);
a634cc10 RW	164	extern int swsusp_write(unsigned int flags);
c2dd0dae	165	extern void swsusp_close(fmode_t);
62c552cc BS	166	#ifdef CONFIG_SUSPEND
	167	extern int swsusp_unmark(void);
	168	#endif
0d3a9abe	169
8a0d613f JS	170	/* kernel/power/block_io.c */
	171	extern struct block_device *hib_resume_bdev;
	172
	173	extern int hib_bio_read_page(pgoff_t page_off, void *addr,
	174	struct bio **bio_chain);
	175	extern int hib_bio_write_page(pgoff_t page_off, void *addr,
	176	struct bio **bio_chain);
	177	extern int hib_wait_on_bio_chain(struct bio **bio_chain);
	178
0d3a9abe	179	struct timeval;
b10d9117	180	/* kernel/power/swsusp.c */
0d3a9abe RW	181	extern void swsusp_show_speed(struct timeval , struct timeval ,
0d3a9abe RW	182	unsigned int, char *);
b10d9117	183
296699de	184	#ifdef CONFIG_SUSPEND
e89547b8 RW	185	struct pm_sleep_state {
	186	const char *label;
	187	suspend_state_t state;
	188	};
	189
a9d70523	190	/* kernel/power/suspend.c */
e89547b8	191	extern struct pm_sleep_state pm_states[];
a9d70523	192
9afc0d8b	193	extern bool valid_state(suspend_state_t state);
6c961dfb	194	extern int suspend_devices_and_enter(suspend_state_t state);
296699de RW	195	#else /* !CONFIG_SUSPEND */
	196	static inline int suspend_devices_and_enter(suspend_state_t state)
	197	{
	198	return -ENOSYS;
	199	}
9afc0d8b	200	static inline bool valid_state(suspend_state_t state) { return false; }
296699de RW	201	#endif /* !CONFIG_SUSPEND */
296699de RW	202
a9d70523 RW	203	#ifdef CONFIG_PM_TEST_SUSPEND
	204	/* kernel/power/suspend_test.c */
	205	extern void suspend_test_start(void);
	206	extern void suspend_test_finish(const char *label);
	207	#else /* !CONFIG_PM_TEST_SUSPEND */
	208	static inline void suspend_test_start(void) {}
	209	static inline void suspend_test_finish(const char *label) {}
	210	#endif /* !CONFIG_PM_TEST_SUSPEND */
	211
82525756 AS	212	#ifdef CONFIG_PM_SLEEP
	213	/* kernel/power/main.c */
	214	extern int pm_notifier_call_chain(unsigned long val);
	215	#endif
2f8ed1c6 AB	216
2f8ed1c6 AB	217	#ifdef CONFIG_HIGHMEM
2f8ed1c6 AB	218	int restore_highmem(void);
	219	#else
	220	static inline unsigned int count_highmem_pages(void) { return 0; }
	221	static inline int restore_highmem(void) { return 0; }
	222	#endif
0e7d56e3 RW	223
	224	/*
	225	* Suspend test levels
	226	*/
	227	enum {
	228	/* keep first */
	229	TEST_NONE,
	230	TEST_CORE,
	231	TEST_CPUS,
	232	TEST_PLATFORM,
	233	TEST_DEVICES,
	234	TEST_FREEZER,
	235	/* keep last */
	236	__TEST_AFTER_LAST
	237	};
	238
	239	#define TEST_FIRST TEST_NONE
	240	#define TEST_MAX (__TEST_AFTER_LAST - 1)
4cc79776 RW	241
4cc79776 RW	242	extern int pm_test_level;
b28f5081 JB	243
	244	#ifdef CONFIG_SUSPEND_FREEZER
	245	static inline int suspend_freeze_processes(void)
	246	{
379e0be8 SB	247	int error;
	248
	249	error = freeze_processes();
379e0be8 SB	250	/*
	251	* freeze_processes() automatically thaws every task if freezing
	252	* fails. So we need not do anything extra upon error.
	253	*/
	254	if (error)
6f585f75	255	return error;
379e0be8 SB	256
379e0be8 SB	257	error = freeze_kernel_threads();
379e0be8 SB	258	/*
	259	* freeze_kernel_threads() thaws only kernel threads upon freezing
	260	* failure. So we have to thaw the userspace tasks ourselves.
	261	*/
	262	if (error)
	263	thaw_processes();
	264
379e0be8	265	return error;
b28f5081 JB	266	}
	267
	268	static inline void suspend_thaw_processes(void)
	269	{
	270	thaw_processes();
	271	}
	272	#else
	273	static inline int suspend_freeze_processes(void)
	274	{
	275	return 0;
	276	}
	277
	278	static inline void suspend_thaw_processes(void)
	279	{
	280	}
	281	#endif
7483b4a4	282
6fa3eb70 S	283	extern struct page saveable_page(struct zone z, unsigned long p);
	284	#ifdef CONFIG_HIGHMEM
	285	extern struct page saveable_highmem_page(struct zone z, unsigned long p);
	286	#else
	287	static
	288	inline struct page saveable_highmem_page(struct zone z, unsigned long p)
	289	{
	290	return NULL;
	291	}
	292	#endif
	293
	294	#define PBES_PER_PAGE (PAGE_SIZE / sizeof(struct pbe))
	295	extern struct list_head nosave_regions;
	296
	297	/**
	298	* This structure represents a range of page frames the contents of which
	299	* should not be saved during the suspend.
	300	*/
	301
	302	struct nosave_region {
	303	struct list_head list;
	304	unsigned long start_pfn;
	305	unsigned long end_pfn;
	306	};
	307
	308	#define BM_END_OF_MAP (~0UL)
	309
	310	#define BM_BITS_PER_BLOCK (PAGE_SIZE * BITS_PER_BYTE)
	311
	312	struct bm_block {
	313	struct list_head hook; /* hook into a list of bitmap blocks */
	314	unsigned long start_pfn; /* pfn represented by the first bit */
	315	unsigned long end_pfn; /* pfn represented by the last bit plus 1 */
	316	unsigned long data; / bitmap representing pages */
	317	};
	318
	319	/* struct bm_position is used for browsing memory bitmaps */
	320
	321	struct bm_position {
	322	struct bm_block *block;
	323	int bit;
	324	};
	325
	326	struct memory_bitmap {
	327	struct list_head blocks; /* list of bitmap blocks */
	328	struct linked_page p_list; / list of pages used to store zone
	329	* bitmap objects and bitmap block
	330	* objects
	331	*/
	332	struct bm_position states; / most recently used bit position */
	333	int num_states; /* when iterating over a bitmap and
	334	* number of states we support.
	335	*/
	336	};
	337
	338	extern int memory_bm_create(struct memory_bitmap *bm, gfp_t gfp_mask,
	339	int safe_needed);
	340	extern int memory_bm_create_index(struct memory_bitmap *bm, gfp_t gfp_mask,
	341	int safe_needed, int index);
	342	extern void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free);
	343	extern void memory_bm_set_bit(struct memory_bitmap *bm, unsigned long pfn);
	344	extern void memory_bm_clear_bit(struct memory_bitmap *bm, unsigned long pfn);
	345	extern void memory_bm_clear_bit_index(struct memory_bitmap *bm, unsigned long pfn, int index);
	346	extern int memory_bm_test_bit(struct memory_bitmap *bm, unsigned long pfn);
347	extern int memory_bm_test_bit_index(struct memory_bitmap *bm, unsigned long pfn, int index);
348	extern unsigned long memory_bm_next_pfn(struct memory_bitmap *bm);
349	extern unsigned long memory_bm_next_pfn_index(struct memory_bitmap *bm,
350	int index);
351	extern void memory_bm_position_reset(struct memory_bitmap *bm);
352	extern void memory_bm_clear(struct memory_bitmap *bm);
353	extern void memory_bm_copy(struct memory_bitmap *source,
354	struct memory_bitmap *dest);
355	extern void memory_bm_dup(struct memory_bitmap *source,
356	struct memory_bitmap *dest);
357	extern int memory_bm_set_iterators(struct memory_bitmap *bm, int number);
358
359	#ifdef CONFIG_TOI
360	struct toi_module_ops;
361	extern int memory_bm_read(struct memory_bitmap bm, int (rw_chunk)
362	(int rw, struct toi_module_ops owner, char buffer, int buffer_size));
363	extern int memory_bm_write(struct memory_bitmap bm, int (rw_chunk)
364	(int rw, struct toi_module_ops owner, char buffer, int buffer_size));
365	#endif
366
7483b4a4 RW	367	#ifdef CONFIG_PM_AUTOSLEEP
	368
	369	/* kernel/power/autosleep.c */
	370	extern int pm_autosleep_init(void);
	371	extern int pm_autosleep_lock(void);
	372	extern void pm_autosleep_unlock(void);
	373	extern suspend_state_t pm_autosleep_state(void);
	374	extern int pm_autosleep_set_state(suspend_state_t state);
	375
	376	#else /* !CONFIG_PM_AUTOSLEEP */
	377
	378	static inline int pm_autosleep_init(void) { return 0; }
	379	static inline int pm_autosleep_lock(void) { return 0; }
	380	static inline void pm_autosleep_unlock(void) {}
	381	static inline suspend_state_t pm_autosleep_state(void) { return PM_SUSPEND_ON; }
	382
	383	#endif /* !CONFIG_PM_AUTOSLEEP */
b86ff982	384
6fa3eb70 S	385	#ifdef CONFIG_EARLYSUSPEND
	386	/* kernel/power/earlysuspend.c */
	387	void request_suspend_state(suspend_state_t state);
	388	suspend_state_t get_suspend_state(void);
	389	//[MTK]
	390	extern void suspend_syssync_enqueue(void) ;
	391	extern void suspend_check_sys_sync_done(void);
	392	#endif
	393
b86ff982 RW	394	#ifdef CONFIG_PM_WAKELOCKS
	395
	396	/* kernel/power/wakelock.c */
	397	extern ssize_t pm_show_wakelocks(char *buf, bool show_active);
	398	extern int pm_wake_lock(const char *buf);
	399	extern int pm_wake_unlock(const char *buf);
	400
	401	#endif /* !CONFIG_PM_WAKELOCKS */