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1 | #ifndef _LINUX_LMB_H |
2 | #define _LINUX_LMB_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_LMB_REGIONS 128 |
20 | |
21 | struct lmb_property { |
22 | u64 base; |
23 | u64 size; |
24 | }; |
25 | |
26 | struct lmb_region { |
27 | unsigned long cnt; |
28 | u64 size; |
29 | struct lmb_property region[MAX_LMB_REGIONS+1]; |
30 | }; |
31 | |
32 | struct lmb { |
33 | unsigned long debug; |
34 | u64 rmo_size; |
35 | struct lmb_region memory; |
36 | struct lmb_region reserved; |
37 | }; |
38 | |
39 | extern struct lmb lmb; |
40 | |
41 | extern void __init lmb_init(void); |
42 | extern void __init lmb_analyze(void); |
43 | extern long lmb_add(u64 base, u64 size); |
44 | extern long lmb_remove(u64 base, u64 size); |
45 | extern long __init lmb_free(u64 base, u64 size); |
46 | extern long __init lmb_reserve(u64 base, u64 size); |
47 | extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid, |
48 | u64 (*nid_range)(u64, u64, int *)); |
49 | extern u64 __init lmb_alloc(u64 size, u64 align); |
50 | extern u64 __init lmb_alloc_base(u64 size, |
51 | u64, u64 max_addr); |
52 | extern u64 __init __lmb_alloc_base(u64 size, |
53 | u64 align, u64 max_addr); |
54 | extern u64 __init lmb_phys_mem_size(void); |
55 | extern u64 lmb_end_of_DRAM(void); |
56 | extern void __init lmb_enforce_memory_limit(u64 memory_limit); |
57 | extern int __init lmb_is_reserved(u64 addr); |
58 | extern int lmb_is_region_reserved(u64 base, u64 size); |
59 | extern int lmb_find(struct lmb_property *res); |
60 | |
61 | extern void lmb_dump_all(void); |
62 | |
63 | static inline u64 |
64 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
65 | { |
66 | return type->region[region_nr].size; |
67 | } |
68 | static inline u64 |
69 | lmb_size_pages(struct lmb_region *type, unsigned long region_nr) |
70 | { |
71 | return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT; |
72 | } |
73 | static inline u64 |
74 | lmb_start_pfn(struct lmb_region *type, unsigned long region_nr) |
75 | { |
76 | return type->region[region_nr].base >> PAGE_SHIFT; |
77 | } |
78 | static inline u64 |
79 | lmb_end_pfn(struct lmb_region *type, unsigned long region_nr) |
80 | { |
81 | return lmb_start_pfn(type, region_nr) + |
82 | lmb_size_pages(type, region_nr); |
83 | } |
84 | |
85 | #include <asm/lmb.h> |
86 | |
87 | #endif /* __KERNEL__ */ |
88 | |
89 | #endif /* _LINUX_LMB_H */ |
90 |
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