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review.evervolv.com / android_kernel_oneplus_msm8996 / 72d4b0b4e0e7fa858767e03972771a9f7c02b689 / . / include / linux / memblock.h
blob: 47bceb187058342f6f2e8ed4e26d71745890fc8c [file] [log] [blame]
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]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
Benjamin Herrenschmidt411a25a2010-07-06 15:38:56 -0700[diff] [blame]19#include <asm/memblock.h>
20
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]21#define MAX_MEMBLOCK_REGIONS 128
22
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]23struct memblock_region {
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]24 u64 base;
25 u64 size;
26};
27
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]28struct memblock_type {
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]29 unsigned long cnt;
30 u64 size;
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]31 struct memblock_region regions[MAX_MEMBLOCK_REGIONS+1];
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]32};
33
34struct memblock {
35 unsigned long debug;
36 u64 rmo_size;
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]37 struct memblock_type memory;
38 struct memblock_type reserved;
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]39};
40
41extern struct memblock memblock;
42
43extern void __init memblock_init(void);
44extern void __init memblock_analyze(void);
45extern long memblock_add(u64 base, u64 size);
46extern long memblock_remove(u64 base, u64 size);
47extern long __init memblock_free(u64 base, u64 size);
48extern long __init memblock_reserve(u64 base, u64 size);
49extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid,
50 u64 (*nid_range)(u64, u64, int *));
51extern u64 __init memblock_alloc(u64 size, u64 align);
52extern u64 __init memblock_alloc_base(u64 size,
53 u64, u64 max_addr);
54extern u64 __init __memblock_alloc_base(u64 size,
55 u64 align, u64 max_addr);
56extern u64 __init memblock_phys_mem_size(void);
57extern u64 memblock_end_of_DRAM(void);
58extern void __init memblock_enforce_memory_limit(u64 memory_limit);
Benjamin Herrenschmidt72d4b0b2010-08-04 14:38:47 +1000[diff] [blame^]59extern int memblock_is_memory(u64 addr);
60extern int memblock_is_region_memory(u64 base, u64 size);
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]61extern int __init memblock_is_reserved(u64 addr);
62extern int memblock_is_region_reserved(u64 base, u64 size);
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]63extern int memblock_find(struct memblock_region *res);
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]64
65extern void memblock_dump_all(void);
66
67static inline u64
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]68memblock_size_bytes(struct memblock_type *type, unsigned long region_nr)
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]69{
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]70 return type->regions[region_nr].size;
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]71}
72static inline u64
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]73memblock_size_pages(struct memblock_type *type, unsigned long region_nr)
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]74{
75 return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT;
76}
77static inline u64
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]78memblock_start_pfn(struct memblock_type *type, unsigned long region_nr)
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]79{
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]80 return type->regions[region_nr].base >> PAGE_SHIFT;
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]81}
82static inline u64
Benjamin Herrenschmidte3239ff2010-08-04 14:06:41 +1000[diff] [blame]83memblock_end_pfn(struct memblock_type *type, unsigned long region_nr)
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]84{
85 return memblock_start_pfn(type, region_nr) +
86 memblock_size_pages(type, region_nr);
87}
88
Yinghai Lu95f72d12010-07-12 14:36:09 +1000[diff] [blame]89#endif /* __KERNEL__ */
90
91#endif /* _LINUX_MEMBLOCK_H */