aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/lmb.h
blob: 8b93f63407e9278e8681ebe5a0a8279097f88c0a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
#ifndef _LINUX_LMB_H
#define _LINUX_LMB_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_LMB_REGIONS 128

struct lmb_property {
	unsigned long base;
	unsigned long size;
};

struct lmb_region {
	unsigned long cnt;
	unsigned long size;
	struct lmb_property region[MAX_LMB_REGIONS+1];
};

struct lmb {
	unsigned long debug;
	unsigned long rmo_size;
	struct lmb_region memory;
	struct lmb_region reserved;
};

extern struct lmb lmb;

extern void __init lmb_init(void);
extern void __init lmb_analyze(void);
extern long __init lmb_add(unsigned long base, unsigned long size);
extern long __init lmb_reserve(unsigned long base, unsigned long size);
extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align);
extern unsigned long __init lmb_alloc_base(unsigned long size,
		unsigned long align, unsigned long max_addr);
extern unsigned long __init __lmb_alloc_base(unsigned long size,
		unsigned long align, unsigned long max_addr);
extern unsigned long __init lmb_phys_mem_size(void);
extern unsigned long __init lmb_end_of_DRAM(void);
extern void __init lmb_enforce_memory_limit(unsigned long memory_limit);
extern int __init lmb_is_reserved(unsigned long addr);

extern void lmb_dump_all(void);

static inline unsigned long
lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
{
	return type->region[region_nr].size;
}
static inline unsigned long
lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
{
	return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
}
static inline unsigned long
lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
{
	return type->region[region_nr].base >> PAGE_SHIFT;
}
static inline unsigned long
lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
{
	return lmb_start_pfn(type, region_nr) +
	       lmb_size_pages(type, region_nr);
}

#include <asm/lmb.h>

#endif /* __KERNEL__ */

#endif /* _LINUX_LMB_H */