[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 */
	MEMBLOCK_NOMAP		= 0x4,	/* don't add to kernel direct mapping */
};

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);
bool memblock_overlaps_region(struct memblock_type *type,
			      phys_addr_t base, phys_addr_t size);
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);
int memblock_mark_nomap(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);

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;
}

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

#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
 * @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
 *
 * 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
 * @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
 *
 * 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);
bool memblock_is_memory(phys_addr_t addr);
int memblock_is_map_memory(phys_addr_t addr);
int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
bool memblock_is_reserved(phys_addr_t addr);
bool 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++)

#define for_each_memblock_type(memblock_type, rgn)			\
	idx = 0;							\
	rgn = &memblock_type->regions[idx];				\
	for (idx = 0; idx < memblock_type->cnt;				\
	     idx++,rgn = &memblock_type->regions[idx])

#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 */
bf3d3cc5	28	MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */
fc6daaf9	29	};
66b16edf	30
e3239ff9	31	struct memblock_region {
2898cc4c BH	32	phys_addr_t base;
2898cc4c BH	33	phys_addr_t size;
66a20757	34	unsigned long flags;
7c0caeb8 TH	35	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
	36	int nid;
	37	#endif
95f72d1e YL	38	};
95f72d1e YL	39
e3239ff9	40	struct memblock_type {
bf23c51f BH	41	unsigned long cnt; /* number of regions */
bf23c51f BH	42	unsigned long max; /* size of the allocated array */
1440c4e2	43	phys_addr_t total_size; /* size of all regions */
bf23c51f	44	struct memblock_region *regions;
95f72d1e YL	45	};
	46
	47	struct memblock {
79442ed1	48	bool bottom_up; /* is bottom up direction? */
2898cc4c	49	phys_addr_t current_limit;
e3239ff9 BH	50	struct memblock_type memory;
e3239ff9 BH	51	struct memblock_type reserved;
70210ed9 PH	52	#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
	53	struct memblock_type physmem;
	54	#endif
95f72d1e YL	55	};
	56
	57	extern struct memblock memblock;
5e63cf43	58	extern int memblock_debug;
55ac590c TC	59	#ifdef CONFIG_MOVABLE_NODE
	60	/* If movable_node boot option specified */
	61	extern bool movable_node_enabled;
	62	#endif /* CONFIG_MOVABLE_NODE */
5e63cf43 YL	63
	64	#define memblock_dbg(fmt, ...) \
	65	if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
95f72d1e	66
87029ee9 GS	67	phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align,
87029ee9 GS	68	phys_addr_t start, phys_addr_t end,
fc6daaf9	69	int nid, ulong flags);
fc769a8e TH	70	phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
fc769a8e TH	71	phys_addr_t size, phys_addr_t align);
29f67386	72	phys_addr_t get_allocated_memblock_reserved_regions_info(phys_addr_t *addr);
5e270e25	73	phys_addr_t get_allocated_memblock_memory_regions_info(phys_addr_t *addr);
1aadc056	74	void memblock_allow_resize(void);
7fb0bc3f	75	int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
581adcbe TH	76	int memblock_add(phys_addr_t base, phys_addr_t size);
	77	int memblock_remove(phys_addr_t base, phys_addr_t size);
	78	int memblock_free(phys_addr_t base, phys_addr_t size);
	79	int memblock_reserve(phys_addr_t base, phys_addr_t size);
6ede1fd3	80	void memblock_trim_memory(phys_addr_t align);
95cf82ec TC	81	bool memblock_overlaps_region(struct memblock_type *type,
95cf82ec TC	82	phys_addr_t base, phys_addr_t size);
66b16edf TC	83	int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size);
66b16edf TC	84	int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size);
a3f5bafc	85	int memblock_mark_mirror(phys_addr_t base, phys_addr_t size);
bf3d3cc5	86	int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
a3f5bafc	87	ulong choose_memblock_flags(void);
f1af9d3a PH	88
	89	/* Low level functions */
	90	int memblock_add_range(struct memblock_type *type,
	91	phys_addr_t base, phys_addr_t size,
	92	int nid, unsigned long flags);
	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
bf3d3cc5 AB	189	static inline bool memblock_is_nomap(struct memblock_region *m)
	190	{
	191	return m->flags & MEMBLOCK_NOMAP;
	192	}
	193
0ee332c1	194	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e76b63f8 YL	195	int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
e76b63f8 YL	196	unsigned long *end_pfn);
0ee332c1 TH	197	void __next_mem_pfn_range(int idx, int nid, unsigned long out_start_pfn,
	198	unsigned long out_end_pfn, int out_nid);
	199
	200	/**
	201	* for_each_mem_pfn_range - early memory pfn range iterator
	202	* @i: an integer used as loop variable
	203	* @nid: node selector, %MAX_NUMNODES for all nodes
	204	* @p_start: ptr to ulong for start pfn of the range, can be %NULL
	205	* @p_end: ptr to ulong for end pfn of the range, can be %NULL
	206	* @p_nid: ptr to int for nid of the range, can be %NULL
	207	*
f2d52fe5	208	* Walks over configured memory ranges.
0ee332c1 TH	209	*/
	210	#define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \
	211	for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \
	212	i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid))
	213	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	214
35fd0808 TH	215	/**
	216	* for_each_free_mem_range - iterate through free memblock areas
	217	* @i: u64 used as loop variable
b1154233	218	* @nid: node selector, %NUMA_NO_NODE for all nodes
d30b5545	219	* @flags: pick from blocks based on memory attributes
35fd0808 TH	220	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	221	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	222	* @p_nid: ptr to int for nid of the range, can be %NULL
	223	*
	224	* Walks over free (memory && !reserved) areas of memblock. Available as
	225	* soon as memblock is initialized.
	226	*/
fc6daaf9	227	#define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \
f1af9d3a	228	for_each_mem_range(i, &memblock.memory, &memblock.reserved, \
fc6daaf9	229	nid, flags, p_start, p_end, p_nid)
7bd0b0f0 TH	230
	231	/**
	232	* for_each_free_mem_range_reverse - rev-iterate through free memblock areas
	233	* @i: u64 used as loop variable
b1154233	234	* @nid: node selector, %NUMA_NO_NODE for all nodes
d30b5545	235	* @flags: pick from blocks based on memory attributes
7bd0b0f0 TH	236	* @p_start: ptr to phys_addr_t for start address of the range, can be %NULL
	237	* @p_end: ptr to phys_addr_t for end address of the range, can be %NULL
	238	* @p_nid: ptr to int for nid of the range, can be %NULL
	239	*
	240	* Walks over free (memory && !reserved) areas of memblock in reverse
	241	* order. Available as soon as memblock is initialized.
	242	*/
fc6daaf9 TL	243	#define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \
fc6daaf9 TL	244	p_nid) \
f1af9d3a	245	for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \
fc6daaf9	246	nid, flags, p_start, p_end, p_nid)
7bd0b0f0	247
66b16edf TC	248	static inline void memblock_set_region_flags(struct memblock_region *r,
	249	unsigned long flags)
	250	{
	251	r->flags \|= flags;
	252	}
	253
	254	static inline void memblock_clear_region_flags(struct memblock_region *r,
	255	unsigned long flags)
	256	{
	257	r->flags &= ~flags;
	258	}
	259
7c0caeb8	260	#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
e7e8de59 TC	261	int memblock_set_node(phys_addr_t base, phys_addr_t size,
e7e8de59 TC	262	struct memblock_type *type, int nid);
7c0caeb8 TH	263
	264	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	265	{
	266	r->nid = nid;
	267	}
	268
	269	static inline int memblock_get_region_node(const struct memblock_region *r)
	270	{
	271	return r->nid;
	272	}
	273	#else
	274	static inline void memblock_set_region_node(struct memblock_region *r, int nid)
	275	{
	276	}
	277
	278	static inline int memblock_get_region_node(const struct memblock_region *r)
	279	{
	280	return 0;
	281	}
	282	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
	283
581adcbe TH	284	phys_addr_t memblock_alloc_nid(phys_addr_t size, phys_addr_t align, int nid);
581adcbe TH	285	phys_addr_t memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
9d1e2492	286
581adcbe	287	phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align);
e63075a3	288
79442ed1 TC	289	#ifdef CONFIG_MOVABLE_NODE
	290	/*
	291	* Set the allocation direction to bottom-up or top-down.
	292	*/
2cfb3665	293	static inline void __init memblock_set_bottom_up(bool enable)
79442ed1 TC	294	{
	295	memblock.bottom_up = enable;
	296	}
	297
	298	/*
	299	* Check if the allocation direction is bottom-up or not.
	300	* if this is true, that said, memblock will allocate memory
	301	* in bottom-up direction.
	302	*/
	303	static inline bool memblock_bottom_up(void)
	304	{
	305	return memblock.bottom_up;
	306	}
	307	#else
2cfb3665	308	static inline void __init memblock_set_bottom_up(bool enable) {}
79442ed1 TC	309	static inline bool memblock_bottom_up(void) { return false; }
	310	#endif
	311
e63075a3	312	/* Flags for memblock_alloc_base() amd __memblock_alloc_base() */
2898cc4c	313	#define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0)
e63075a3 BH	314	#define MEMBLOCK_ALLOC_ACCESSIBLE 0
e63075a3 BH	315
2bfc2862	316	phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align,
fc6daaf9 TL	317	phys_addr_t start, phys_addr_t end,
fc6daaf9 TL	318	ulong flags);
581adcbe TH	319	phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	320	phys_addr_t max_addr);
	321	phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align,
	322	phys_addr_t max_addr);
	323	phys_addr_t memblock_phys_mem_size(void);
595ad9af	324	phys_addr_t memblock_mem_size(unsigned long limit_pfn);
581adcbe TH	325	phys_addr_t memblock_start_of_DRAM(void);
	326	phys_addr_t memblock_end_of_DRAM(void);
	327	void memblock_enforce_memory_limit(phys_addr_t memory_limit);
b4ad0c7e	328	bool memblock_is_memory(phys_addr_t addr);
bf3d3cc5	329	int memblock_is_map_memory(phys_addr_t addr);
581adcbe	330	int memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
b4ad0c7e	331	bool memblock_is_reserved(phys_addr_t addr);
c5c5c9d1	332	bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
581adcbe	333
4ff7b82f TH	334	extern void __memblock_dump_all(void);
	335
	336	static inline void memblock_dump_all(void)
	337	{
	338	if (memblock_debug)
	339	__memblock_dump_all();
	340	}
95f72d1e	341
e63075a3 BH	342	/**
	343	* memblock_set_current_limit - Set the current allocation limit to allow
	344	* limiting allocations to what is currently
	345	* accessible during boot
	346	* @limit: New limit value (physical address)
	347	*/
581adcbe	348	void memblock_set_current_limit(phys_addr_t limit);
e63075a3	349
35a1f0bd	350
fec51014 LA	351	phys_addr_t memblock_get_current_limit(void);
fec51014 LA	352
5b385f25 BH	353	/*
	354	* pfn conversion functions
	355	*
	356	* While the memory MEMBLOCKs should always be page aligned, the reserved
	357	* MEMBLOCKs may not be. This accessor attempt to provide a very clear
	358	* idea of what they return for such non aligned MEMBLOCKs.
	359	*/
	360
	361	/**
c7fc2de0	362	* memblock_region_memory_base_pfn - Return the lowest pfn intersecting with the memory region
5b385f25 BH	363	* @reg: memblock_region structure
5b385f25 BH	364	*/
c7fc2de0	365	static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg)
5b385f25	366	{
c7fc2de0	367	return PFN_UP(reg->base);
5b385f25 BH	368	}
	369
	370	/**
c7fc2de0	371	* memblock_region_memory_end_pfn - Return the end_pfn this region
5b385f25 BH	372	* @reg: memblock_region structure
5b385f25 BH	373	*/
c7fc2de0	374	static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg)
5b385f25	375	{
c7fc2de0	376	return PFN_DOWN(reg->base + reg->size);
5b385f25 BH	377	}
	378
	379	/**
c7fc2de0	380	* memblock_region_reserved_base_pfn - Return the lowest pfn intersecting with the reserved region
5b385f25 BH	381	* @reg: memblock_region structure
5b385f25 BH	382	*/
c7fc2de0	383	static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg)
5b385f25	384	{
c7fc2de0	385	return PFN_DOWN(reg->base);
5b385f25 BH	386	}
	387
	388	/**
c7fc2de0	389	* memblock_region_reserved_end_pfn - Return the end_pfn this region
5b385f25 BH	390	* @reg: memblock_region structure
5b385f25 BH	391	*/
c7fc2de0	392	static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg)
5b385f25	393	{
c7fc2de0	394	return PFN_UP(reg->base + reg->size);
5b385f25 BH	395	}
	396
	397	#define for_each_memblock(memblock_type, region) \
	398	for (region = memblock.memblock_type.regions; \
	399	region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \
	400	region++)
	401
8c9c1701 AK	402	#define for_each_memblock_type(memblock_type, rgn) \
	403	idx = 0; \
	404	rgn = &memblock_type->regions[idx]; \
	405	for (idx = 0; idx < memblock_type->cnt; \
	406	idx++,rgn = &memblock_type->regions[idx])
5b385f25	407
c378ddd5	408	#ifdef CONFIG_ARCH_DISCARD_MEMBLOCK
67e24bcb TH	409	#define __init_memblock __meminit
67e24bcb TH	410	#define __initdata_memblock __meminitdata
10d06439 YL	411	#else
	412	#define __init_memblock
	413	#define __initdata_memblock
	414	#endif
	415
4a20799d	416	#ifdef CONFIG_MEMTEST
7f70baee	417	extern void early_memtest(phys_addr_t start, phys_addr_t end);
4a20799d	418	#else
7f70baee	419	static inline void early_memtest(phys_addr_t start, phys_addr_t end)
4a20799d VM	420	{
	421	}
	422	#endif
	423
95dde501 YL	424	#else
	425	static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
	426	{
1f5026a7	427	return 0;
95dde501 YL	428	}
95dde501 YL	429
f0b37fad YL	430	#endif /* CONFIG_HAVE_MEMBLOCK */
f0b37fad YL	431
95f72d1e YL	432	#endif /* __KERNEL__ */
	433
	434	#endif /* _LINUX_MEMBLOCK_H */