[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
#define INIT_PHYSMEM_REGIONS	4

/* Definition of memblock flags. */
enum {
	MEMBLOCK_NONE		= 0x0,	/* No special request */
	MEMBLOCK_HOTPLUG	= 0x1,	/* hotpluggable region */
	MEMBLOCK_MIRROR		= 0x2,	/* mirrored 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;
#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
	struct memblock_type physmem;
#endif
};

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, ulong flags);
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);
int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
ulong choose_memblock_flags(void);

/* Low level functions */
int memblock_add_range(struct memblock_type *type,
		       phys_addr_t base, phys_addr_t size,
		       int nid, unsigned long flags);

int memblock_remove_range(struct memblock_type *type,
			  phys_addr_t base,
			  phys_addr_t size);

void __next_mem_range(u64 *idx, int nid, ulong flags,
		      struct memblock_type *type_a,
		      struct memblock_type *type_b, phys_addr_t *out_start,
		      phys_addr_t *out_end, int *out_nid);

void __next_mem_range_rev(u64 *idx, int nid, ulong flags,
			  struct memblock_type *type_a,
			  struct memblock_type *type_b, phys_addr_t *out_start,
			  phys_addr_t *out_end, int *out_nid);

void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start,
			       phys_addr_t *out_end);

/**
 * for_each_mem_range - iterate through memblock areas from type_a and not
 * included in type_b. Or just type_a if type_b is NULL.
 * @i: u64 used as loop variable
 * @type_a: ptr to memblock_type to iterate
 * @type_b: ptr to memblock_type which excludes from the iteration
 * @nid: node selector, %NUMA_NO_NODE for all nodes
 * @flags: pick from blocks based on memory attributes
 * @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
 */
#define for_each_mem_range(i, type_a, type_b, nid, flags,		\
			   p_start, p_end, p_nid)			\
	for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b,	\
				     p_start, p_end, p_nid);		\
	     i != (u64)ULLONG_MAX;					\
	     __next_mem_range(&i, nid, flags, type_a, type_b,		\
			      p_start, p_end, p_nid))

/**
 * for_each_mem_range_rev - reverse iterate through memblock areas from
 * type_a and not included in type_b. Or just type_a if type_b is NULL.
 * @i: u64 used as loop variable
 * @type_a: ptr to memblock_type to iterate
 * @type_b: ptr to memblock_type which excludes from the iteration
 * @nid: node selector, %NUMA_NO_NODE for all nodes
 * @flags: pick from blocks based on memory attributes
 * @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
 */
#define for_each_mem_range_rev(i, type_a, type_b, nid, flags,		\
			       p_start, p_end, p_nid)			\
	for (i = (u64)ULLONG_MAX,					\
		     __next_mem_range_rev(&i, nid, flags, type_a, type_b,\
					 p_start, p_end, p_nid);	\
	     i != (u64)ULLONG_MAX;					\
	     __next_mem_range_rev(&i, nid, flags, type_a, type_b,	\
				  p_start, p_end, p_nid))

/**
 * for_each_reserved_mem_region - iterate over all reserved memblock areas
 * @i: u64 used as loop variable
 * @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
 *
 * Walks over reserved areas of memblock. Available as soon as memblock
 * is initialized.
 */
#define for_each_reserved_mem_region(i, p_start, p_end)			\
	for (i = 0UL,							\
	     __next_reserved_mem_region(&i, p_start, p_end);		\
	     i != (u64)ULLONG_MAX;					\
	     __next_reserved_mem_region(&i, p_start, p_end))

#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

static inline bool memblock_is_mirror(struct memblock_region *m)
{
	return m->flags & MEMBLOCK_MIRROR;
}

#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 */

/**
 * 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
 * @flags: pick from blocks based on memory attributes
 *
 * Walks over free (memory && !reserved) areas of memblock.  Available as
 * soon as memblock is initialized.
 */
#define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid)	\
	for_each_mem_range(i, &memblock.memory, &memblock.reserved,	\
			   nid, flags, p_start, p_end, p_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
 * @flags: pick from blocks based on memory attributes
 *
 * 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, flags, p_start, p_end,	\
					p_nid)				\
	for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved,	\
			       nid, flags, 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 __init 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 __init 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 __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
					phys_addr_t start, phys_addr_t end,
					ulong flags);
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);


phys_addr_t memblock_get_current_limit(void);

/*
 * 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

#ifdef CONFIG_MEMTEST
extern void early_memtest(phys_addr_t start, phys_addr_t end);
#else
static inline void early_memtest(phys_addr_t start, phys_addr_t end)
{
}
#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
70210ed9	21	#define INIT_PHYSMEM_REGIONS 4
95f72d1e	22
66b16edf	23	/* Definition of memblock flags. */
fc6daaf9 TL	24	enum {
	25	MEMBLOCK_NONE = 0x0, /* No special request */
	26	MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */
a3f5bafc	27	MEMBLOCK_MIRROR = 0x2, /* mirrored region */
fc6daaf9	28	};
66b16edf	29
e3239ff9	30	struct memblock_region {
2898cc4c BH	31	phys_addr_t base;
2898cc4c BH	32	phys_addr_t size;
66a20757	33	unsigned long flags;
7c0caeb8 TH	34	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
	35	int nid;
	36	#endif
95f72d1e YL	37	};
95f72d1e YL	38
e3239ff9	39	struct memblock_type {
bf23c51f BH	40	unsigned long cnt; /* number of regions */
bf23c51f BH	41	unsigned long max; /* size of the allocated array */
1440c4e2	42	phys_addr_t total_size; /* size of all regions */
bf23c51f	43	struct memblock_region *regions;
95f72d1e YL	44	};
	45
	46	struct memblock {
79442ed1	47	bool bottom_up; /* is bottom up direction? */
2898cc4c	48	phys_addr_t current_limit;
e3239ff9 BH	49	struct memblock_type memory;
e3239ff9 BH	50	struct memblock_type reserved;
70210ed9 PH	51	#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
	52	struct memblock_type physmem;
	53	#endif
95f72d1e YL	54	};
	55
	56	extern struct memblock memblock;
5e63cf43	57	extern int memblock_debug;
55ac590c TC	58	#ifdef CONFIG_MOVABLE_NODE
	59	/* If movable_node boot option specified */
	60	extern bool movable_node_enabled;
	61	#endif /* CONFIG_MOVABLE_NODE */
5e63cf43 YL	62
	63	#define memblock_dbg(fmt, ...) \
	64	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
95f72d1e	65
87029ee9 GS	66	phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
87029ee9 GS	67	phys_addr_t start, phys_addr_t end,
fc6daaf9	68	int nid, ulong flags);
fc769a8e TH	69	phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
fc769a8e TH	70	phys_addr_t size, phys_addr_t align);
29f67386	71	phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
5e270e25	72	phys_addr_t get_allocated_memblock_memory_regions_info(phys_addr_t *addr);
1aadc056	73	void memblock_allow_resize(void);
7fb0bc3f	74	int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
581adcbe TH	75	int memblock_add(phys_addr_t base, phys_addr_t size);
	76	int memblock_remove(phys_addr_t base, phys_addr_t size);
	77	int memblock_free(phys_addr_t base, phys_addr_t size);
	78	int memblock_reserve(phys_addr_t base, phys_addr_t size);
6ede1fd3	79	void memblock_trim_memory(phys_addr_t align);
66b16edf TC	80	int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
66b16edf TC	81	int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
a3f5bafc TL	82	int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
a3f5bafc TL	83	ulong choose_memblock_flags(void);
f1af9d3a PH	84
	85	/* Low level functions */
	86	int memblock_add_range(struct memblock_type *type,
	87	phys_addr_t base, phys_addr_t size,
	88	int nid, unsigned long flags);
	89
	90	int memblock_remove_range(struct memblock_type *type,
	91	phys_addr_t base,
	92	phys_addr_t size);
	93
fc6daaf9 TL	94	void __next_mem_range(u64 *idx, int nid, ulong flags,
fc6daaf9 TL	95	struct memblock_type *type_a,
f1af9d3a PH	96	struct memblock_type type_b, phys_addr_t out_start,
	97	phys_addr_t out_end, int out_nid);
	98
fc6daaf9 TL	99	void __next_mem_range_rev(u64 *idx, int nid, ulong flags,
fc6daaf9 TL	100	struct memblock_type *type_a,
f1af9d3a PH	101	struct memblock_type type_b, phys_addr_t out_start,
	102	phys_addr_t out_end, int out_nid);
	103
8e7a7f86 RH	104	void __next_reserved_mem_region(u64 idx, phys_addr_t out_start,
	105	phys_addr_t *out_end);
	106
f1af9d3a PH	107	/**
	108	* for_each_mem_range - iterate through memblock areas from type_a and not
	109	* included in type_b. Or just type_a if type_b is NULL.
	110	* @i: u64 used as loop variable
	111	* @type_a: ptr to memblock_type to iterate
	112	* @type_b: ptr to memblock_type which excludes from the iteration
	113	* @nid: node selector, %NUMA_NO_NODE for all nodes
fc6daaf9	114	* @flags: pick from blocks based on memory attributes
f1af9d3a PH	115	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	116	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	117	* @p_nid: ptr to int for nid of the range, can be %NULL
	118	*/
fc6daaf9	119	#define for_each_mem_range(i, type_a, type_b, nid, flags, \
f1af9d3a	120	p_start, p_end, p_nid) \
fc6daaf9	121	for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \
f1af9d3a PH	122	p_start, p_end, p_nid); \
f1af9d3a PH	123	i != (u64)ULLONG_MAX; \
fc6daaf9	124	__next_mem_range(&i, nid, flags, type_a, type_b, \
f1af9d3a PH	125	p_start, p_end, p_nid))
	126
	127	/**
	128	* for_each_mem_range_rev - reverse iterate through memblock areas from
	129	* type_a and not included in type_b. Or just type_a if type_b is NULL.
	130	* @i: u64 used as loop variable
	131	* @type_a: ptr to memblock_type to iterate
	132	* @type_b: ptr to memblock_type which excludes from the iteration
	133	* @nid: node selector, %NUMA_NO_NODE for all nodes
fc6daaf9	134	* @flags: pick from blocks based on memory attributes
f1af9d3a PH	135	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	136	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	137	* @p_nid: ptr to int for nid of the range, can be %NULL
	138	*/
fc6daaf9	139	#define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \
f1af9d3a PH	140	p_start, p_end, p_nid) \
f1af9d3a PH	141	for (i = (u64)ULLONG_MAX, \
fc6daaf9	142	__next_mem_range_rev(&i, nid, flags, type_a, type_b,\
f1af9d3a PH	143	p_start, p_end, p_nid); \
f1af9d3a PH	144	i != (u64)ULLONG_MAX; \
fc6daaf9	145	__next_mem_range_rev(&i, nid, flags, type_a, type_b, \
f1af9d3a PH	146	p_start, p_end, p_nid))
f1af9d3a PH	147
8e7a7f86 RH	148	/**
	149	* for_each_reserved_mem_region - iterate over all reserved memblock areas
	150	* @i: u64 used as loop variable
	151	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	152	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	153	*
	154	* Walks over reserved areas of memblock. Available as soon as memblock
	155	* is initialized.
	156	*/
	157	#define for_each_reserved_mem_region(i, p_start, p_end) \
	158	for (i = 0UL, \
	159	__next_reserved_mem_region(&i, p_start, p_end); \
	160	i != (u64)ULLONG_MAX; \
	161	__next_reserved_mem_region(&i, p_start, p_end))
	162
55ac590c TC	163	#ifdef CONFIG_MOVABLE_NODE
	164	static inline bool memblock_is_hotpluggable(struct memblock_region *m)
	165	{
	166	return m->flags & MEMBLOCK_HOTPLUG;
	167	}
	168
	169	static inline bool movable_node_is_enabled(void)
	170	{
	171	return movable_node_enabled;
	172	}
	173	#else
	174	static inline bool memblock_is_hotpluggable(struct memblock_region *m)
	175	{
	176	return false;
	177	}
	178	static inline bool movable_node_is_enabled(void)
	179	{
	180	return false;
	181	}
	182	#endif
e63075a3	183
a3f5bafc TL	184	static inline bool memblock_is_mirror(struct memblock_region *m)
	185	{
	186	return m->flags & MEMBLOCK_MIRROR;
	187	}
	188
0ee332c1	189	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e76b63f8 YL	190	int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
e76b63f8 YL	191	unsigned long *end_pfn);
0ee332c1 TH	192	void __next_mem_pfn_range(int idx, int nid, unsigned long out_start_pfn,
	193	unsigned long out_end_pfn, int out_nid);
	194
	195	/**
	196	* for_each_mem_pfn_range - early memory pfn range iterator
	197	* @i: an integer used as loop variable
	198	* @nid: node selector, %MAX_NUMNODES for all nodes
	199	* @p_start: ptr to ulong for start pfn of the range, can be %NULL
	200	* @p_end: ptr to ulong for end pfn of the range, can be %NULL
	201	* @p_nid: ptr to int for nid of the range, can be %NULL
	202	*
f2d52fe5	203	* Walks over configured memory ranges.
0ee332c1 TH	204	*/
	205	#define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \
	206	for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
	207	i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
	208	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	209
35fd0808 TH	210	/**
	211	* for_each_free_mem_range - iterate through free memblock areas
	212	* @i: u64 used as loop variable
b1154233	213	* @nid: node selector, %NUMA_NO_NODE for all nodes
35fd0808 TH	214	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	215	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	216	* @p_nid: ptr to int for nid of the range, can be %NULL
fc6daaf9	217	* @flags: pick from blocks based on memory attributes
35fd0808 TH	218	*
	219	* Walks over free (memory && !reserved) areas of memblock. Available as
	220	* soon as memblock is initialized.
	221	*/
fc6daaf9	222	#define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \
f1af9d3a	223	for_each_mem_range(i, &memblock.memory, &memblock.reserved, \
fc6daaf9	224	nid, flags, p_start, p_end, p_nid)
7bd0b0f0 TH	225
	226	/**
	227	* for_each_free_mem_range_reverse - rev-iterate through free memblock areas
	228	* @i: u64 used as loop variable
b1154233	229	* @nid: node selector, %NUMA_NO_NODE for all nodes
7bd0b0f0 TH	230	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	231	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	232	* @p_nid: ptr to int for nid of the range, can be %NULL
fc6daaf9	233	* @flags: pick from blocks based on memory attributes
7bd0b0f0 TH	234	*
	235	* Walks over free (memory && !reserved) areas of memblock in reverse
	236	* order. Available as soon as memblock is initialized.
	237	*/
fc6daaf9 TL	238	#define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \
fc6daaf9 TL	239	p_nid) \
f1af9d3a	240	for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
fc6daaf9	241	nid, flags, p_start, p_end, p_nid)
7bd0b0f0	242
66b16edf TC	243	static inline void memblock_set_region_flags(struct memblock_region *r,
	244	unsigned long flags)
	245	{
	246	r->flags \|= flags;
	247	}
	248
	249	static inline void memblock_clear_region_flags(struct memblock_region *r,
	250	unsigned long flags)
	251	{
	252	r->flags &= ~flags;
	253	}
	254
7c0caeb8	255	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e7e8de59 TC	256	int memblock_set_node(phys_addr_t base, phys_addr_t size,
e7e8de59 TC	257	struct memblock_type *type, int nid);
7c0caeb8 TH	258
	259	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	260	{
	261	r->nid = nid;
	262	}
	263
	264	static inline int memblock_get_region_node(const struct memblock_region *r)
	265	{
	266	return r->nid;
	267	}
	268	#else
	269	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	270	{
	271	}
	272
	273	static inline int memblock_get_region_node(const struct memblock_region *r)
	274	{
	275	return 0;
	276	}
	277	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	278
581adcbe TH	279	phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
581adcbe TH	280	phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
9d1e2492	281
581adcbe	282	phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
e63075a3	283
79442ed1 TC	284	#ifdef CONFIG_MOVABLE_NODE
	285	/*
	286	* Set the allocation direction to bottom-up or top-down.
	287	*/
2cfb3665	288	static inline void __init memblock_set_bottom_up(bool enable)
79442ed1 TC	289	{
	290	memblock.bottom_up = enable;
	291	}
	292
	293	/*
	294	* Check if the allocation direction is bottom-up or not.
	295	* if this is true, that said, memblock will allocate memory
	296	* in bottom-up direction.
	297	*/
	298	static inline bool memblock_bottom_up(void)
	299	{
	300	return memblock.bottom_up;
	301	}
	302	#else
2cfb3665	303	static inline void __init memblock_set_bottom_up(bool enable) {}
79442ed1 TC	304	static inline bool memblock_bottom_up(void) { return false; }
	305	#endif
	306
e63075a3	307	/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
2898cc4c	308	#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
e63075a3 BH	309	#define MEMBLOCK_ALLOC_ACCESSIBLE 0
e63075a3 BH	310
2bfc2862	311	phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
fc6daaf9 TL	312	phys_addr_t start, phys_addr_t end,
fc6daaf9 TL	313	ulong flags);
581adcbe TH	314	phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	315	phys_addr_t max_addr);
	316	phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	317	phys_addr_t max_addr);
	318	phys_addr_t memblock_phys_mem_size(void);
595ad9af	319	phys_addr_t memblock_mem_size(unsigned long limit_pfn);
581adcbe TH	320	phys_addr_t memblock_start_of_DRAM(void);
	321	phys_addr_t memblock_end_of_DRAM(void);
	322	void memblock_enforce_memory_limit(phys_addr_t memory_limit);
	323	int memblock_is_memory(phys_addr_t addr);
	324	int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
	325	int memblock_is_reserved(phys_addr_t addr);
	326	int memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
	327
4ff7b82f TH	328	extern void __memblock_dump_all(void);
	329
	330	static inline void memblock_dump_all(void)
	331	{
	332	if (memblock_debug)
	333	__memblock_dump_all();
	334	}
95f72d1e	335
e63075a3 BH	336	/**
	337	* memblock_set_current_limit - Set the current allocation limit to allow
	338	* limiting allocations to what is currently
	339	* accessible during boot
	340	* @limit: New limit value (physical address)
	341	*/
581adcbe	342	void memblock_set_current_limit(phys_addr_t limit);
e63075a3	343
35a1f0bd	344
fec51014 LA	345	phys_addr_t memblock_get_current_limit(void);
fec51014 LA	346
5b385f25 BH	347	/*
	348	* pfn conversion functions
	349	*
	350	* While the memory MEMBLOCKs should always be page aligned, the reserved
	351	* MEMBLOCKs may not be. This accessor attempt to provide a very clear
	352	* idea of what they return for such non aligned MEMBLOCKs.
	353	*/
	354
	355	/**
c7fc2de0	356	* memblock_region_memory_base_pfn - Return the lowest pfn intersecting with the memory region
5b385f25 BH	357	* @reg: memblock_region structure
5b385f25 BH	358	*/
c7fc2de0	359	static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg)
5b385f25	360	{
c7fc2de0	361	return PFN_UP(reg->base);
5b385f25 BH	362	}
	363
	364	/**
c7fc2de0	365	* memblock_region_memory_end_pfn - Return the end_pfn this region
5b385f25 BH	366	* @reg: memblock_region structure
5b385f25 BH	367	*/
c7fc2de0	368	static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg)
5b385f25	369	{
c7fc2de0	370	return PFN_DOWN(reg->base + reg->size);
5b385f25 BH	371	}
	372
	373	/**
c7fc2de0	374	* memblock_region_reserved_base_pfn - Return the lowest pfn intersecting with the reserved region
5b385f25 BH	375	* @reg: memblock_region structure
5b385f25 BH	376	*/
c7fc2de0	377	static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg)
5b385f25	378	{
c7fc2de0	379	return PFN_DOWN(reg->base);
5b385f25 BH	380	}
	381
	382	/**
c7fc2de0	383	* memblock_region_reserved_end_pfn - Return the end_pfn this region
5b385f25 BH	384	* @reg: memblock_region structure
5b385f25 BH	385	*/
c7fc2de0	386	static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg)
5b385f25	387	{
c7fc2de0	388	return PFN_UP(reg->base + reg->size);
5b385f25 BH	389	}
	390
	391	#define for_each_memblock(memblock_type, region) \
	392	for (region = memblock.memblock_type.regions; \
	393	region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
	394	region++)
	395
	396
c378ddd5	397	#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
67e24bcb TH	398	#define __init_memblock __meminit
67e24bcb TH	399	#define __initdata_memblock __meminitdata
10d06439 YL	400	#else
	401	#define __init_memblock
	402	#define __initdata_memblock
	403	#endif
	404
4a20799d	405	#ifdef CONFIG_MEMTEST
7f70baee	406	extern void early_memtest(phys_addr_t start, phys_addr_t end);
4a20799d	407	#else
7f70baee	408	static inline void early_memtest(phys_addr_t start, phys_addr_t end)
4a20799d VM	409	{
	410	}
	411	#endif
	412
95dde501 YL	413	#else
	414	static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
	415	{
1f5026a7	416	return 0;
95dde501 YL	417	}
95dde501 YL	418
f0b37fad YL	419	#endif /* CONFIG_HAVE_MEMBLOCK */
f0b37fad YL	420
95f72d1e YL	421	#endif /* __KERNEL__ */
	422
	423	#endif /* _LINUX_MEMBLOCK_H */