[deliverable/linux.git] / include / linux / memblock.h

#ifndef _LINUX_MEMBLOCK_H
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__

#ifdef CONFIG_HAVE_MEMBLOCK
/*
 * Logical memory blocks.
 *
 * Copyright (C) 2001 Peter Bergner, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#include <linux/init.h>
#include <linux/mm.h>

#define INIT_MEMBLOCK_REGIONS	128

/* Definition of memblock flags. */
#define MEMBLOCK_HOTPLUG	0x1	/* hotpluggable region */

struct memblock_region {
	phys_addr_t base;
	phys_addr_t size;
	unsigned long flags;
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
	int nid;
#endif
};

struct memblock_type {
	unsigned long cnt;	/* number of regions */
	unsigned long max;	/* size of the allocated array */
	phys_addr_t total_size;	/* size of all regions */
	struct memblock_region *regions;
};

struct memblock {
	bool bottom_up;  /* is bottom up direction? */
	phys_addr_t current_limit;
	struct memblock_type memory;
	struct memblock_type reserved;
};

extern struct memblock memblock;
extern int memblock_debug;
#ifdef CONFIG_MOVABLE_NODE
/* If movable_node boot option specified */
extern bool movable_node_enabled;
#endif /* CONFIG_MOVABLE_NODE */

#define memblock_dbg(fmt, ...) \
	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)

phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
					    phys_addr_t start, phys_addr_t end,
					    int nid);
phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
				   phys_addr_t size, phys_addr_t align);
phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
phys_addr_t get_allocated_memblock_memory_regions_info(phys_addr_t *addr);
void memblock_allow_resize(void);
int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
int memblock_add(phys_addr_t base, phys_addr_t size);
int memblock_remove(phys_addr_t base, phys_addr_t size);
int memblock_free(phys_addr_t base, phys_addr_t size);
int memblock_reserve(phys_addr_t base, phys_addr_t size);
void memblock_trim_memory(phys_addr_t align);
int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
#ifdef CONFIG_MOVABLE_NODE
static inline bool memblock_is_hotpluggable(struct memblock_region *m)
{
	return m->flags & MEMBLOCK_HOTPLUG;
}

static inline bool movable_node_is_enabled(void)
{
	return movable_node_enabled;
}
#else
static inline bool memblock_is_hotpluggable(struct memblock_region *m)
{
	return false;
}
static inline bool movable_node_is_enabled(void)
{
	return false;
}
#endif

#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
			    unsigned long  *end_pfn);
void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
			  unsigned long *out_end_pfn, int *out_nid);

/**
 * for_each_mem_pfn_range - early memory pfn range iterator
 * @i: an integer used as loop variable
 * @nid: node selector, %MAX_NUMNODES for all nodes
 * @p_start: ptr to ulong for start pfn of the range, can be %NULL
 * @p_end: ptr to ulong for end pfn of the range, can be %NULL
 * @p_nid: ptr to int for nid of the range, can be %NULL
 *
 * Walks over configured memory ranges.
 */
#define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid)		\
	for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
	     i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */

void __next_free_mem_range(u64 *idx, int nid, phys_addr_t *out_start,
			   phys_addr_t *out_end, int *out_nid);

/**
 * for_each_free_mem_range - iterate through free memblock areas
 * @i: u64 used as loop variable
 * @nid: node selector, %NUMA_NO_NODE for all nodes
 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
 * @p_nid: ptr to int for nid of the range, can be %NULL
 *
 * Walks over free (memory && !reserved) areas of memblock.  Available as
 * soon as memblock is initialized.
 */
#define for_each_free_mem_range(i, nid, p_start, p_end, p_nid)		\
	for (i = 0,							\
	     __next_free_mem_range(&i, nid, p_start, p_end, p_nid);	\
	     i != (u64)ULLONG_MAX;					\
	     __next_free_mem_range(&i, nid, p_start, p_end, p_nid))

void __next_free_mem_range_rev(u64 *idx, int nid, phys_addr_t *out_start,
			       phys_addr_t *out_end, int *out_nid);

/**
 * for_each_free_mem_range_reverse - rev-iterate through free memblock areas
 * @i: u64 used as loop variable
 * @nid: node selector, %NUMA_NO_NODE for all nodes
 * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
 * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
 * @p_nid: ptr to int for nid of the range, can be %NULL
 *
 * Walks over free (memory && !reserved) areas of memblock in reverse
 * order.  Available as soon as memblock is initialized.
 */
#define for_each_free_mem_range_reverse(i, nid, p_start, p_end, p_nid)	\
	for (i = (u64)ULLONG_MAX,					\
	     __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid);	\
	     i != (u64)ULLONG_MAX;					\
	     __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid))

static inline void memblock_set_region_flags(struct memblock_region *r,
					     unsigned long flags)
{
	r->flags |= flags;
}

static inline void memblock_clear_region_flags(struct memblock_region *r,
					       unsigned long flags)
{
	r->flags &= ~flags;
}

#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
int memblock_set_node(phys_addr_t base, phys_addr_t size,
		      struct memblock_type *type, int nid);

static inline void memblock_set_region_node(struct memblock_region *r, int nid)
{
	r->nid = nid;
}

static inline int memblock_get_region_node(const struct memblock_region *r)
{
	return r->nid;
}
#else
static inline void memblock_set_region_node(struct memblock_region *r, int nid)
{
}

static inline int memblock_get_region_node(const struct memblock_region *r)
{
	return 0;
}
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */

phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);

phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);

#ifdef CONFIG_MOVABLE_NODE
/*
 * Set the allocation direction to bottom-up or top-down.
 */
static inline void memblock_set_bottom_up(bool enable)
{
	memblock.bottom_up = enable;
}

/*
 * Check if the allocation direction is bottom-up or not.
 * if this is true, that said, memblock will allocate memory
 * in bottom-up direction.
 */
static inline bool memblock_bottom_up(void)
{
	return memblock.bottom_up;
}
#else
static inline void memblock_set_bottom_up(bool enable) {}
static inline bool memblock_bottom_up(void) { return false; }
#endif

/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
#define MEMBLOCK_ALLOC_ANYWHERE	(~(phys_addr_t)0)
#define MEMBLOCK_ALLOC_ACCESSIBLE	0

phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
				phys_addr_t max_addr);
phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
				  phys_addr_t max_addr);
phys_addr_t memblock_phys_mem_size(void);
phys_addr_t memblock_mem_size(unsigned long limit_pfn);
phys_addr_t memblock_start_of_DRAM(void);
phys_addr_t memblock_end_of_DRAM(void);
void memblock_enforce_memory_limit(phys_addr_t memory_limit);
int memblock_is_memory(phys_addr_t addr);
int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
int memblock_is_reserved(phys_addr_t addr);
int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);

extern void __memblock_dump_all(void);

static inline void memblock_dump_all(void)
{
	if (memblock_debug)
		__memblock_dump_all();
}

/**
 * memblock_set_current_limit - Set the current allocation limit to allow
 *                         limiting allocations to what is currently
 *                         accessible during boot
 * @limit: New limit value (physical address)
 */
void memblock_set_current_limit(phys_addr_t limit);


/*
 * pfn conversion functions
 *
 * While the memory MEMBLOCKs should always be page aligned, the reserved
 * MEMBLOCKs may not be. This accessor attempt to provide a very clear
 * idea of what they return for such non aligned MEMBLOCKs.
 */

/**
 * memblock_region_memory_base_pfn - Return the lowest pfn intersecting with the memory region
 * @reg: memblock_region structure
 */
static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg)
{
	return PFN_UP(reg->base);
}

/**
 * memblock_region_memory_end_pfn - Return the end_pfn this region
 * @reg: memblock_region structure
 */
static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg)
{
	return PFN_DOWN(reg->base + reg->size);
}

/**
 * memblock_region_reserved_base_pfn - Return the lowest pfn intersecting with the reserved region
 * @reg: memblock_region structure
 */
static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg)
{
	return PFN_DOWN(reg->base);
}

/**
 * memblock_region_reserved_end_pfn - Return the end_pfn this region
 * @reg: memblock_region structure
 */
static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg)
{
	return PFN_UP(reg->base + reg->size);
}

#define for_each_memblock(memblock_type, region)					\
	for (region = memblock.memblock_type.regions;				\
	     region < (memblock.memblock_type.regions + memblock.memblock_type.cnt);	\
	     region++)


#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
#define __init_memblock __meminit
#define __initdata_memblock __meminitdata
#else
#define __init_memblock
#define __initdata_memblock
#endif

#else
static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
{
	return 0;
}

#endif /* CONFIG_HAVE_MEMBLOCK */

#endif /* __KERNEL__ */

#endif /* _LINUX_MEMBLOCK_H */
Commit	Line	Data
95f72d1e YL	1	#ifndef _LINUX_MEMBLOCK_H
	2	#define _LINUX_MEMBLOCK_H
	3	#ifdef __KERNEL__
	4
f0b37fad	5	#ifdef CONFIG_HAVE_MEMBLOCK
95f72d1e YL	6	/*
	7	* Logical memory blocks.
	8	*
	9	* Copyright (C) 2001 Peter Bergner, IBM Corp.
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License
	13	* as published by the Free Software Foundation; either version
	14	* 2 of the License, or (at your option) any later version.
	15	*/
	16
	17	#include <linux/init.h>
	18	#include <linux/mm.h>
	19
37d8d4bf	20	#define INIT_MEMBLOCK_REGIONS 128
95f72d1e	21
66b16edf TC	22	/* Definition of memblock flags. */
	23	#define MEMBLOCK_HOTPLUG 0x1 /* hotpluggable region */
	24
e3239ff9	25	struct memblock_region {
2898cc4c BH	26	phys_addr_t base;
2898cc4c BH	27	phys_addr_t size;
66a20757	28	unsigned long flags;
7c0caeb8 TH	29	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
	30	int nid;
	31	#endif
95f72d1e YL	32	};
95f72d1e YL	33
e3239ff9	34	struct memblock_type {
bf23c51f BH	35	unsigned long cnt; /* number of regions */
bf23c51f BH	36	unsigned long max; /* size of the allocated array */
1440c4e2	37	phys_addr_t total_size; /* size of all regions */
bf23c51f	38	struct memblock_region *regions;
95f72d1e YL	39	};
	40
	41	struct memblock {
79442ed1	42	bool bottom_up; /* is bottom up direction? */
2898cc4c	43	phys_addr_t current_limit;
e3239ff9 BH	44	struct memblock_type memory;
e3239ff9 BH	45	struct memblock_type reserved;
95f72d1e YL	46	};
	47
	48	extern struct memblock memblock;
5e63cf43	49	extern int memblock_debug;
55ac590c TC	50	#ifdef CONFIG_MOVABLE_NODE
	51	/* If movable_node boot option specified */
	52	extern bool movable_node_enabled;
	53	#endif /* CONFIG_MOVABLE_NODE */
5e63cf43 YL	54
	55	#define memblock_dbg(fmt, ...) \
	56	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
95f72d1e	57
87029ee9 GS	58	phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
	59	phys_addr_t start, phys_addr_t end,
	60	int nid);
fc769a8e TH	61	phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
fc769a8e TH	62	phys_addr_t size, phys_addr_t align);
29f67386	63	phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
5e270e25	64	phys_addr_t get_allocated_memblock_memory_regions_info(phys_addr_t *addr);
1aadc056	65	void memblock_allow_resize(void);
7fb0bc3f	66	int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
581adcbe TH	67	int memblock_add(phys_addr_t base, phys_addr_t size);
	68	int memblock_remove(phys_addr_t base, phys_addr_t size);
	69	int memblock_free(phys_addr_t base, phys_addr_t size);
	70	int memblock_reserve(phys_addr_t base, phys_addr_t size);
6ede1fd3	71	void memblock_trim_memory(phys_addr_t align);
66b16edf TC	72	int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
66b16edf TC	73	int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
55ac590c TC	74	#ifdef CONFIG_MOVABLE_NODE
	75	static inline bool memblock_is_hotpluggable(struct memblock_region *m)
	76	{
	77	return m->flags & MEMBLOCK_HOTPLUG;
	78	}
	79
	80	static inline bool movable_node_is_enabled(void)
	81	{
	82	return movable_node_enabled;
	83	}
	84	#else
	85	static inline bool memblock_is_hotpluggable(struct memblock_region *m)
	86	{
	87	return false;
	88	}
	89	static inline bool movable_node_is_enabled(void)
	90	{
	91	return false;
	92	}
	93	#endif
e63075a3	94
0ee332c1	95	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e76b63f8 YL	96	int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
e76b63f8 YL	97	unsigned long *end_pfn);
0ee332c1 TH	98	void __next_mem_pfn_range(int idx, int nid, unsigned long out_start_pfn,
	99	unsigned long out_end_pfn, int out_nid);
	100
	101	/**
	102	* for_each_mem_pfn_range - early memory pfn range iterator
	103	* @i: an integer used as loop variable
	104	* @nid: node selector, %MAX_NUMNODES for all nodes
	105	* @p_start: ptr to ulong for start pfn of the range, can be %NULL
	106	* @p_end: ptr to ulong for end pfn of the range, can be %NULL
	107	* @p_nid: ptr to int for nid of the range, can be %NULL
	108	*
f2d52fe5	109	* Walks over configured memory ranges.
0ee332c1 TH	110	*/
	111	#define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \
	112	for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
	113	i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
	114	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	115
581adcbe TH	116	void __next_free_mem_range(u64 idx, int nid, phys_addr_t out_start,
581adcbe TH	117	phys_addr_t out_end, int out_nid);
35fd0808 TH	118
	119	/**
	120	* for_each_free_mem_range - iterate through free memblock areas
	121	* @i: u64 used as loop variable
b1154233	122	* @nid: node selector, %NUMA_NO_NODE for all nodes
35fd0808 TH	123	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	124	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	125	* @p_nid: ptr to int for nid of the range, can be %NULL
	126	*
	127	* Walks over free (memory && !reserved) areas of memblock. Available as
	128	* soon as memblock is initialized.
	129	*/
	130	#define for_each_free_mem_range(i, nid, p_start, p_end, p_nid) \
	131	for (i = 0, \
	132	__next_free_mem_range(&i, nid, p_start, p_end, p_nid); \
	133	i != (u64)ULLONG_MAX; \
	134	__next_free_mem_range(&i, nid, p_start, p_end, p_nid))
	135
7bd0b0f0 TH	136	void __next_free_mem_range_rev(u64 idx, int nid, phys_addr_t out_start,
	137	phys_addr_t out_end, int out_nid);
	138
	139	/**
	140	* for_each_free_mem_range_reverse - rev-iterate through free memblock areas
	141	* @i: u64 used as loop variable
b1154233	142	* @nid: node selector, %NUMA_NO_NODE for all nodes
7bd0b0f0 TH	143	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	144	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	145	* @p_nid: ptr to int for nid of the range, can be %NULL
	146	*
	147	* Walks over free (memory && !reserved) areas of memblock in reverse
	148	* order. Available as soon as memblock is initialized.
	149	*/
	150	#define for_each_free_mem_range_reverse(i, nid, p_start, p_end, p_nid) \
	151	for (i = (u64)ULLONG_MAX, \
	152	__next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid); \
	153	i != (u64)ULLONG_MAX; \
	154	__next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid))
	155
66b16edf TC	156	static inline void memblock_set_region_flags(struct memblock_region *r,
	157	unsigned long flags)
	158	{
	159	r->flags \|= flags;
	160	}
	161
	162	static inline void memblock_clear_region_flags(struct memblock_region *r,
	163	unsigned long flags)
	164	{
	165	r->flags &= ~flags;
	166	}
	167
7c0caeb8	168	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e7e8de59 TC	169	int memblock_set_node(phys_addr_t base, phys_addr_t size,
e7e8de59 TC	170	struct memblock_type *type, int nid);
7c0caeb8 TH	171
	172	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	173	{
	174	r->nid = nid;
	175	}
	176
	177	static inline int memblock_get_region_node(const struct memblock_region *r)
	178	{
	179	return r->nid;
	180	}
	181	#else
	182	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	183	{
	184	}
	185
	186	static inline int memblock_get_region_node(const struct memblock_region *r)
	187	{
	188	return 0;
	189	}
	190	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	191
581adcbe TH	192	phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
581adcbe TH	193	phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
9d1e2492	194
581adcbe	195	phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
e63075a3	196
79442ed1 TC	197	#ifdef CONFIG_MOVABLE_NODE
	198	/*
	199	* Set the allocation direction to bottom-up or top-down.
	200	*/
	201	static inline void memblock_set_bottom_up(bool enable)
	202	{
	203	memblock.bottom_up = enable;
	204	}
	205
	206	/*
	207	* Check if the allocation direction is bottom-up or not.
	208	* if this is true, that said, memblock will allocate memory
	209	* in bottom-up direction.
	210	*/
	211	static inline bool memblock_bottom_up(void)
	212	{
	213	return memblock.bottom_up;
	214	}
	215	#else
	216	static inline void memblock_set_bottom_up(bool enable) {}
	217	static inline bool memblock_bottom_up(void) { return false; }
	218	#endif
	219
e63075a3	220	/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
2898cc4c	221	#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
e63075a3 BH	222	#define MEMBLOCK_ALLOC_ACCESSIBLE 0
e63075a3 BH	223
581adcbe TH	224	phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	225	phys_addr_t max_addr);
	226	phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	227	phys_addr_t max_addr);
	228	phys_addr_t memblock_phys_mem_size(void);
595ad9af	229	phys_addr_t memblock_mem_size(unsigned long limit_pfn);
581adcbe TH	230	phys_addr_t memblock_start_of_DRAM(void);
	231	phys_addr_t memblock_end_of_DRAM(void);
	232	void memblock_enforce_memory_limit(phys_addr_t memory_limit);
	233	int memblock_is_memory(phys_addr_t addr);
	234	int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
	235	int memblock_is_reserved(phys_addr_t addr);
	236	int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
	237
4ff7b82f TH	238	extern void __memblock_dump_all(void);
	239
	240	static inline void memblock_dump_all(void)
	241	{
	242	if (memblock_debug)
	243	__memblock_dump_all();
	244	}
95f72d1e	245
e63075a3 BH	246	/**
	247	* memblock_set_current_limit - Set the current allocation limit to allow
	248	* limiting allocations to what is currently
	249	* accessible during boot
	250	* @limit: New limit value (physical address)
	251	*/
581adcbe	252	void memblock_set_current_limit(phys_addr_t limit);
e63075a3	253
35a1f0bd	254
5b385f25 BH	255	/*
	256	* pfn conversion functions
	257	*
	258	* While the memory MEMBLOCKs should always be page aligned, the reserved
	259	* MEMBLOCKs may not be. This accessor attempt to provide a very clear
	260	* idea of what they return for such non aligned MEMBLOCKs.
	261	*/
	262
	263	/**
c7fc2de0	264	* memblock_region_memory_base_pfn - Return the lowest pfn intersecting with the memory region
5b385f25 BH	265	* @reg: memblock_region structure
5b385f25 BH	266	*/
c7fc2de0	267	static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg)
5b385f25	268	{
c7fc2de0	269	return PFN_UP(reg->base);
5b385f25 BH	270	}
	271
	272	/**
c7fc2de0	273	* memblock_region_memory_end_pfn - Return the end_pfn this region
5b385f25 BH	274	* @reg: memblock_region structure
5b385f25 BH	275	*/
c7fc2de0	276	static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg)
5b385f25	277	{
c7fc2de0	278	return PFN_DOWN(reg->base + reg->size);
5b385f25 BH	279	}
	280
	281	/**
c7fc2de0	282	* memblock_region_reserved_base_pfn - Return the lowest pfn intersecting with the reserved region
5b385f25 BH	283	* @reg: memblock_region structure
5b385f25 BH	284	*/
c7fc2de0	285	static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg)
5b385f25	286	{
c7fc2de0	287	return PFN_DOWN(reg->base);
5b385f25 BH	288	}
	289
	290	/**
c7fc2de0	291	* memblock_region_reserved_end_pfn - Return the end_pfn this region
5b385f25 BH	292	* @reg: memblock_region structure
5b385f25 BH	293	*/
c7fc2de0	294	static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg)
5b385f25	295	{
c7fc2de0	296	return PFN_UP(reg->base + reg->size);
5b385f25 BH	297	}
	298
	299	#define for_each_memblock(memblock_type, region) \
	300	for (region = memblock.memblock_type.regions; \
	301	region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
	302	region++)
	303
	304
c378ddd5	305	#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
67e24bcb TH	306	#define __init_memblock __meminit
67e24bcb TH	307	#define __initdata_memblock __meminitdata
10d06439 YL	308	#else
	309	#define __init_memblock
	310	#define __initdata_memblock
	311	#endif
	312
95dde501 YL	313	#else
	314	static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
	315	{
1f5026a7	316	return 0;
95dde501 YL	317	}
95dde501 YL	318
f0b37fad YL	319	#endif /* CONFIG_HAVE_MEMBLOCK */
f0b37fad YL	320
95f72d1e YL	321	#endif /* __KERNEL__ */
	322
	323	#endif /* _LINUX_MEMBLOCK_H */