[mirror_ubuntu-zesty-kernel.git] / include / linux / memblock.h

#ifndef _LINUX_MEMBLOCK_H
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__

/*
 * 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 MAX_MEMBLOCK_REGIONS 128

struct memblock_region {
	u64 base;
	u64 size;
};

struct memblock_type {
	unsigned long cnt;
	u64 size;
	struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
};

struct memblock {
	unsigned long debug;
	u64 rmo_size;
	struct memblock_type memory;
	struct memblock_type reserved;
};

extern struct memblock memblock;

extern void __init memblock_init(void);
extern void __init memblock_analyze(void);
extern long memblock_add(u64 base, u64 size);
extern long memblock_remove(u64 base, u64 size);
extern long __init memblock_free(u64 base, u64 size);
extern long __init memblock_reserve(u64 base, u64 size);
extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
				u64 (*nid_range)(u64, u64, int *));
extern u64 __init memblock_alloc(u64 size, u64 align);
extern u64 __init memblock_alloc_base(u64 size,
		u64, u64 max_addr);
extern u64 __init __memblock_alloc_base(u64 size,
		u64 align, u64 max_addr);
extern u64 __init memblock_phys_mem_size(void);
extern u64 memblock_end_of_DRAM(void);
extern void __init memblock_enforce_memory_limit(u64 memory_limit);
extern int __init memblock_is_reserved(u64 addr);
extern int memblock_is_region_reserved(u64 base, u64 size);
extern int memblock_find(struct memblock_region *res);

extern void memblock_dump_all(void);

static inline u64
memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
{
	return type->regions[region_nr].size;
}
static inline u64
memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
{
	return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
}
static inline u64
memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
{
	return type->regions[region_nr].base >> PAGE_SHIFT;
}
static inline u64
memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
{
	return memblock_start_pfn(type, region_nr) +
	       memblock_size_pages(type, region_nr);
}

#include <asm/memblock.h>

#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
	5	/*
	6	* Logical memory blocks.
	7	*
	8	* Copyright (C) 2001 Peter Bergner, IBM Corp.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License
	12	* as published by the Free Software Foundation; either version
	13	* 2 of the License, or (at your option) any later version.
	14	*/
	15
	16	#include <linux/init.h>
	17	#include <linux/mm.h>
	18
	19	#define MAX_MEMBLOCK_REGIONS 128
	20
e3239ff9	21	struct memblock_region {
95f72d1e YL	22	u64 base;
	23	u64 size;
	24	};
	25
e3239ff9	26	struct memblock_type {
95f72d1e YL	27	unsigned long cnt;
95f72d1e YL	28	u64 size;
e3239ff9	29	struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
95f72d1e YL	30	};
	31
	32	struct memblock {
	33	unsigned long debug;
	34	u64 rmo_size;
e3239ff9 BH	35	struct memblock_type memory;
e3239ff9 BH	36	struct memblock_type reserved;
95f72d1e YL	37	};
	38
	39	extern struct memblock memblock;
	40
	41	extern void __init memblock_init(void);
	42	extern void __init memblock_analyze(void);
	43	extern long memblock_add(u64 base, u64 size);
	44	extern long memblock_remove(u64 base, u64 size);
	45	extern long __init memblock_free(u64 base, u64 size);
	46	extern long __init memblock_reserve(u64 base, u64 size);
	47	extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
	48	u64 (nid_range)(u64, u64, int ));
	49	extern u64 __init memblock_alloc(u64 size, u64 align);
	50	extern u64 __init memblock_alloc_base(u64 size,
	51	u64, u64 max_addr);
	52	extern u64 __init __memblock_alloc_base(u64 size,
	53	u64 align, u64 max_addr);
	54	extern u64 __init memblock_phys_mem_size(void);
	55	extern u64 memblock_end_of_DRAM(void);
	56	extern void __init memblock_enforce_memory_limit(u64 memory_limit);
	57	extern int __init memblock_is_reserved(u64 addr);
	58	extern int memblock_is_region_reserved(u64 base, u64 size);
e3239ff9	59	extern int memblock_find(struct memblock_region *res);
95f72d1e YL	60
	61	extern void memblock_dump_all(void);
	62
	63	static inline u64
e3239ff9	64	memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
95f72d1e	65	{
e3239ff9	66	return type->regions[region_nr].size;
95f72d1e YL	67	}
95f72d1e YL	68	static inline u64
e3239ff9	69	memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
95f72d1e YL	70	{
	71	return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
	72	}
	73	static inline u64
e3239ff9	74	memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
95f72d1e	75	{
e3239ff9	76	return type->regions[region_nr].base >> PAGE_SHIFT;
95f72d1e YL	77	}
95f72d1e YL	78	static inline u64
e3239ff9	79	memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
95f72d1e YL	80	{
	81	return memblock_start_pfn(type, region_nr) +
	82	memblock_size_pages(type, region_nr);
	83	}
	84
	85	#include <asm/memblock.h>
	86
	87	#endif /* __KERNEL__ */
	88
	89	#endif /* _LINUX_MEMBLOCK_H */