Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 | |
3 | */ | |
4 | #ifndef _LINUX_BOOTMEM_H | |
5 | #define _LINUX_BOOTMEM_H | |
6 | ||
1da177e4 | 7 | #include <linux/mmzone.h> |
e786e86a | 8 | #include <asm/dma.h> |
1da177e4 LT |
9 | |
10 | /* | |
11 | * simple boot-time physical memory area allocator. | |
12 | */ | |
13 | ||
14 | extern unsigned long max_low_pfn; | |
15 | extern unsigned long min_low_pfn; | |
16 | ||
17 | /* | |
18 | * highest page | |
19 | */ | |
20 | extern unsigned long max_pfn; | |
21 | ||
08677214 | 22 | #ifndef CONFIG_NO_BOOTMEM |
1da177e4 LT |
23 | /* |
24 | * node_bootmem_map is a map pointer - the bits represent all physical | |
25 | * memory pages (including holes) on the node. | |
26 | */ | |
27 | typedef struct bootmem_data { | |
3560e249 | 28 | unsigned long node_min_pfn; |
1da177e4 LT |
29 | unsigned long node_low_pfn; |
30 | void *node_bootmem_map; | |
5f2809e6 JW |
31 | unsigned long last_end_off; |
32 | unsigned long hint_idx; | |
679bc9fb | 33 | struct list_head list; |
1da177e4 LT |
34 | } bootmem_data_t; |
35 | ||
b61bfa3c | 36 | extern bootmem_data_t bootmem_node_data[]; |
08677214 | 37 | #endif |
b61bfa3c | 38 | |
f71bf0ca | 39 | extern unsigned long bootmem_bootmap_pages(unsigned long); |
223e8dc9 JW |
40 | |
41 | extern unsigned long init_bootmem_node(pg_data_t *pgdat, | |
42 | unsigned long freepfn, | |
43 | unsigned long startpfn, | |
44 | unsigned long endpfn); | |
f71bf0ca | 45 | extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); |
223e8dc9 | 46 | |
64a02daa | 47 | extern unsigned long free_low_memory_core_early(int nodeid); |
223e8dc9 JW |
48 | extern unsigned long free_all_bootmem_node(pg_data_t *pgdat); |
49 | extern unsigned long free_all_bootmem(void); | |
50 | ||
51 | extern void free_bootmem_node(pg_data_t *pgdat, | |
52 | unsigned long addr, | |
53 | unsigned long size); | |
f71bf0ca | 54 | extern void free_bootmem(unsigned long addr, unsigned long size); |
9f993ac3 | 55 | extern void free_bootmem_late(unsigned long addr, unsigned long size); |
223e8dc9 JW |
56 | |
57 | /* | |
58 | * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, | |
59 | * the architecture-specific code should honor this). | |
60 | * | |
61 | * If flags is 0, then the return value is always 0 (success). If | |
62 | * flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the | |
63 | * memory already was reserved. | |
64 | */ | |
65 | #define BOOTMEM_DEFAULT 0 | |
66 | #define BOOTMEM_EXCLUSIVE (1<<0) | |
67 | ||
c1329375 TH |
68 | extern int reserve_bootmem(unsigned long addr, |
69 | unsigned long size, | |
70 | int flags); | |
2d0aae41 TH |
71 | extern int reserve_bootmem_node(pg_data_t *pgdat, |
72 | unsigned long physaddr, | |
73 | unsigned long size, | |
74 | int flags); | |
75 | ||
76 | extern void *__alloc_bootmem(unsigned long size, | |
f71bf0ca FBH |
77 | unsigned long align, |
78 | unsigned long goal); | |
2d0aae41 | 79 | extern void *__alloc_bootmem_nopanic(unsigned long size, |
f71bf0ca FBH |
80 | unsigned long align, |
81 | unsigned long goal); | |
223e8dc9 JW |
82 | extern void *__alloc_bootmem_node(pg_data_t *pgdat, |
83 | unsigned long size, | |
84 | unsigned long align, | |
85 | unsigned long goal); | |
08677214 YL |
86 | void *__alloc_bootmem_node_high(pg_data_t *pgdat, |
87 | unsigned long size, | |
88 | unsigned long align, | |
89 | unsigned long goal); | |
223e8dc9 JW |
90 | extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
91 | unsigned long size, | |
92 | unsigned long align, | |
93 | unsigned long goal); | |
99ab7b19 YL |
94 | void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
95 | unsigned long size, | |
96 | unsigned long align, | |
97 | unsigned long goal, | |
98 | unsigned long limit); | |
2d0aae41 TH |
99 | extern void *__alloc_bootmem_low(unsigned long size, |
100 | unsigned long align, | |
101 | unsigned long goal); | |
f71bf0ca FBH |
102 | extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, |
103 | unsigned long size, | |
104 | unsigned long align, | |
105 | unsigned long goal); | |
c1329375 | 106 | |
8bba154e YL |
107 | #ifdef CONFIG_NO_BOOTMEM |
108 | /* We are using top down, so it is safe to use 0 here */ | |
109 | #define BOOTMEM_LOW_LIMIT 0 | |
110 | #else | |
111 | #define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS) | |
112 | #endif | |
113 | ||
1da177e4 | 114 | #define alloc_bootmem(x) \ |
8bba154e | 115 | __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
53dde5f3 | 116 | #define alloc_bootmem_align(x, align) \ |
8bba154e | 117 | __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) |
74768ed8 | 118 | #define alloc_bootmem_nopanic(x) \ |
8bba154e | 119 | __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 120 | #define alloc_bootmem_pages(x) \ |
8bba154e | 121 | __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
74768ed8 | 122 | #define alloc_bootmem_pages_nopanic(x) \ |
8bba154e | 123 | __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
1da177e4 | 124 | #define alloc_bootmem_node(pgdat, x) \ |
8bba154e | 125 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
8f389a99 | 126 | #define alloc_bootmem_node_nopanic(pgdat, x) \ |
8bba154e | 127 | __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 128 | #define alloc_bootmem_pages_node(pgdat, x) \ |
8bba154e | 129 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 | 130 | #define alloc_bootmem_pages_node_nopanic(pgdat, x) \ |
8bba154e | 131 | __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 TH |
132 | |
133 | #define alloc_bootmem_low(x) \ | |
134 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) | |
135 | #define alloc_bootmem_low_pages(x) \ | |
136 | __alloc_bootmem_low(x, PAGE_SIZE, 0) | |
1da177e4 | 137 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
71fb2e8f | 138 | __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) |
c6af5e9f JW |
139 | |
140 | extern int reserve_bootmem_generic(unsigned long addr, unsigned long size, | |
141 | int flags); | |
1da177e4 | 142 | |
6f167ec7 DH |
143 | #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP |
144 | extern void *alloc_remap(int nid, unsigned long size); | |
145 | #else | |
146 | static inline void *alloc_remap(int nid, unsigned long size) | |
147 | { | |
148 | return NULL; | |
149 | } | |
f71bf0ca | 150 | #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ |
6f167ec7 | 151 | |
f71bf0ca FBH |
152 | extern void *alloc_large_system_hash(const char *tablename, |
153 | unsigned long bucketsize, | |
154 | unsigned long numentries, | |
155 | int scale, | |
156 | int flags, | |
157 | unsigned int *_hash_shift, | |
158 | unsigned int *_hash_mask, | |
31fe62b9 TB |
159 | unsigned long low_limit, |
160 | unsigned long high_limit); | |
1da177e4 | 161 | |
04903664 | 162 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ |
2c85f51d JB |
163 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min |
164 | * shift passed via *_hash_shift */ | |
1da177e4 | 165 | |
c2fdf3a9 AB |
166 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have |
167 | * sufficient vmalloc space. | |
1da177e4 | 168 | */ |
c2fdf3a9 | 169 | #if defined(CONFIG_NUMA) && defined(CONFIG_64BIT) |
1da177e4 LT |
170 | #define HASHDIST_DEFAULT 1 |
171 | #else | |
172 | #define HASHDIST_DEFAULT 0 | |
173 | #endif | |
f034b5d4 | 174 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ |
1da177e4 LT |
175 | |
176 | ||
177 | #endif /* _LINUX_BOOTMEM_H */ |