Commit | Line | Data |
---|---|---|
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); | |
2d0aae41 TH |
94 | extern void *__alloc_bootmem_low(unsigned long size, |
95 | unsigned long align, | |
96 | unsigned long goal); | |
f71bf0ca FBH |
97 | extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, |
98 | unsigned long size, | |
99 | unsigned long align, | |
100 | unsigned long goal); | |
c1329375 | 101 | |
8bba154e YL |
102 | #ifdef CONFIG_NO_BOOTMEM |
103 | /* We are using top down, so it is safe to use 0 here */ | |
104 | #define BOOTMEM_LOW_LIMIT 0 | |
105 | #else | |
106 | #define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS) | |
107 | #endif | |
108 | ||
1da177e4 | 109 | #define alloc_bootmem(x) \ |
8bba154e | 110 | __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
53dde5f3 | 111 | #define alloc_bootmem_align(x, align) \ |
8bba154e | 112 | __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) |
74768ed8 | 113 | #define alloc_bootmem_nopanic(x) \ |
8bba154e | 114 | __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 115 | #define alloc_bootmem_pages(x) \ |
8bba154e | 116 | __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
74768ed8 | 117 | #define alloc_bootmem_pages_nopanic(x) \ |
8bba154e | 118 | __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
1da177e4 | 119 | #define alloc_bootmem_node(pgdat, x) \ |
8bba154e | 120 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
8f389a99 | 121 | #define alloc_bootmem_node_nopanic(pgdat, x) \ |
8bba154e | 122 | __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 123 | #define alloc_bootmem_pages_node(pgdat, x) \ |
8bba154e | 124 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 | 125 | #define alloc_bootmem_pages_node_nopanic(pgdat, x) \ |
8bba154e | 126 | __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 TH |
127 | |
128 | #define alloc_bootmem_low(x) \ | |
129 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) | |
130 | #define alloc_bootmem_low_pages(x) \ | |
131 | __alloc_bootmem_low(x, PAGE_SIZE, 0) | |
1da177e4 | 132 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
71fb2e8f | 133 | __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) |
c6af5e9f JW |
134 | |
135 | extern int reserve_bootmem_generic(unsigned long addr, unsigned long size, | |
136 | int flags); | |
223e8dc9 JW |
137 | |
138 | extern void *alloc_bootmem_section(unsigned long size, | |
139 | unsigned long section_nr); | |
1da177e4 | 140 | |
6f167ec7 DH |
141 | #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP |
142 | extern void *alloc_remap(int nid, unsigned long size); | |
143 | #else | |
144 | static inline void *alloc_remap(int nid, unsigned long size) | |
145 | { | |
146 | return NULL; | |
147 | } | |
f71bf0ca | 148 | #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ |
6f167ec7 | 149 | |
f71bf0ca FBH |
150 | extern void *alloc_large_system_hash(const char *tablename, |
151 | unsigned long bucketsize, | |
152 | unsigned long numentries, | |
153 | int scale, | |
154 | int flags, | |
155 | unsigned int *_hash_shift, | |
156 | unsigned int *_hash_mask, | |
157 | unsigned long limit); | |
1da177e4 | 158 | |
04903664 | 159 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ |
2c85f51d JB |
160 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min |
161 | * shift passed via *_hash_shift */ | |
1da177e4 | 162 | |
c2fdf3a9 AB |
163 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have |
164 | * sufficient vmalloc space. | |
1da177e4 | 165 | */ |
c2fdf3a9 | 166 | #if defined(CONFIG_NUMA) && defined(CONFIG_64BIT) |
1da177e4 LT |
167 | #define HASHDIST_DEFAULT 1 |
168 | #else | |
169 | #define HASHDIST_DEFAULT 0 | |
170 | #endif | |
f034b5d4 | 171 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ |
1da177e4 LT |
172 | |
173 | ||
174 | #endif /* _LINUX_BOOTMEM_H */ |