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> |
26f09e9b | 8 | #include <linux/mm_types.h> |
e786e86a | 9 | #include <asm/dma.h> |
1da177e4 LT |
10 | |
11 | /* | |
12 | * simple boot-time physical memory area allocator. | |
13 | */ | |
14 | ||
15 | extern unsigned long max_low_pfn; | |
16 | extern unsigned long min_low_pfn; | |
17 | ||
18 | /* | |
19 | * highest page | |
20 | */ | |
21 | extern unsigned long max_pfn; | |
8dd33030 IM |
22 | /* |
23 | * highest possible page | |
24 | */ | |
25 | extern unsigned long long max_possible_pfn; | |
1da177e4 | 26 | |
08677214 | 27 | #ifndef CONFIG_NO_BOOTMEM |
1da177e4 LT |
28 | /* |
29 | * node_bootmem_map is a map pointer - the bits represent all physical | |
30 | * memory pages (including holes) on the node. | |
31 | */ | |
32 | typedef struct bootmem_data { | |
3560e249 | 33 | unsigned long node_min_pfn; |
1da177e4 LT |
34 | unsigned long node_low_pfn; |
35 | void *node_bootmem_map; | |
5f2809e6 JW |
36 | unsigned long last_end_off; |
37 | unsigned long hint_idx; | |
679bc9fb | 38 | struct list_head list; |
1da177e4 LT |
39 | } bootmem_data_t; |
40 | ||
b61bfa3c | 41 | extern bootmem_data_t bootmem_node_data[]; |
08677214 | 42 | #endif |
b61bfa3c | 43 | |
f71bf0ca | 44 | extern unsigned long bootmem_bootmap_pages(unsigned long); |
223e8dc9 JW |
45 | |
46 | extern unsigned long init_bootmem_node(pg_data_t *pgdat, | |
47 | unsigned long freepfn, | |
48 | unsigned long startpfn, | |
49 | unsigned long endpfn); | |
f71bf0ca | 50 | extern unsigned long init_bootmem(unsigned long addr, unsigned long memend); |
223e8dc9 | 51 | |
223e8dc9 | 52 | extern unsigned long free_all_bootmem(void); |
f784a3f1 | 53 | extern void reset_node_managed_pages(pg_data_t *pgdat); |
7b4b2a0d | 54 | extern void reset_all_zones_managed_pages(void); |
223e8dc9 JW |
55 | |
56 | extern void free_bootmem_node(pg_data_t *pgdat, | |
57 | unsigned long addr, | |
58 | unsigned long size); | |
81df9bff JK |
59 | extern void free_bootmem(unsigned long physaddr, unsigned long size); |
60 | extern void free_bootmem_late(unsigned long physaddr, unsigned long size); | |
223e8dc9 JW |
61 | |
62 | /* | |
63 | * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE, | |
64 | * the architecture-specific code should honor this). | |
65 | * | |
1754e44e WSH |
66 | * If flags is BOOTMEM_DEFAULT, then the return value is always 0 (success). |
67 | * If flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the memory | |
68 | * already was reserved. | |
223e8dc9 JW |
69 | */ |
70 | #define BOOTMEM_DEFAULT 0 | |
71 | #define BOOTMEM_EXCLUSIVE (1<<0) | |
72 | ||
c1329375 TH |
73 | extern int reserve_bootmem(unsigned long addr, |
74 | unsigned long size, | |
75 | int flags); | |
2d0aae41 TH |
76 | extern int reserve_bootmem_node(pg_data_t *pgdat, |
77 | unsigned long physaddr, | |
78 | unsigned long size, | |
79 | int flags); | |
80 | ||
81 | extern void *__alloc_bootmem(unsigned long size, | |
f71bf0ca FBH |
82 | unsigned long align, |
83 | unsigned long goal); | |
2d0aae41 | 84 | extern void *__alloc_bootmem_nopanic(unsigned long size, |
f71bf0ca FBH |
85 | unsigned long align, |
86 | unsigned long goal); | |
223e8dc9 JW |
87 | extern void *__alloc_bootmem_node(pg_data_t *pgdat, |
88 | unsigned long size, | |
89 | unsigned long align, | |
90 | unsigned long goal); | |
08677214 YL |
91 | void *__alloc_bootmem_node_high(pg_data_t *pgdat, |
92 | unsigned long size, | |
93 | unsigned long align, | |
94 | unsigned long goal); | |
223e8dc9 JW |
95 | extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
96 | unsigned long size, | |
97 | unsigned long align, | |
98 | unsigned long goal); | |
99ab7b19 YL |
99 | void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
100 | unsigned long size, | |
101 | unsigned long align, | |
102 | unsigned long goal, | |
103 | unsigned long limit); | |
2d0aae41 TH |
104 | extern void *__alloc_bootmem_low(unsigned long size, |
105 | unsigned long align, | |
106 | unsigned long goal); | |
38fa4175 YL |
107 | void *__alloc_bootmem_low_nopanic(unsigned long size, |
108 | unsigned long align, | |
109 | unsigned long goal); | |
f71bf0ca FBH |
110 | extern void *__alloc_bootmem_low_node(pg_data_t *pgdat, |
111 | unsigned long size, | |
112 | unsigned long align, | |
113 | unsigned long goal); | |
c1329375 | 114 | |
8bba154e YL |
115 | #ifdef CONFIG_NO_BOOTMEM |
116 | /* We are using top down, so it is safe to use 0 here */ | |
117 | #define BOOTMEM_LOW_LIMIT 0 | |
118 | #else | |
119 | #define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS) | |
120 | #endif | |
121 | ||
1da177e4 | 122 | #define alloc_bootmem(x) \ |
8bba154e | 123 | __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
53dde5f3 | 124 | #define alloc_bootmem_align(x, align) \ |
8bba154e | 125 | __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) |
74768ed8 | 126 | #define alloc_bootmem_nopanic(x) \ |
8bba154e | 127 | __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 128 | #define alloc_bootmem_pages(x) \ |
8bba154e | 129 | __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
74768ed8 | 130 | #define alloc_bootmem_pages_nopanic(x) \ |
8bba154e | 131 | __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
1da177e4 | 132 | #define alloc_bootmem_node(pgdat, x) \ |
8bba154e | 133 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
8f389a99 | 134 | #define alloc_bootmem_node_nopanic(pgdat, x) \ |
8bba154e | 135 | __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 136 | #define alloc_bootmem_pages_node(pgdat, x) \ |
8bba154e | 137 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 | 138 | #define alloc_bootmem_pages_node_nopanic(pgdat, x) \ |
8bba154e | 139 | __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 TH |
140 | |
141 | #define alloc_bootmem_low(x) \ | |
142 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) | |
38fa4175 YL |
143 | #define alloc_bootmem_low_pages_nopanic(x) \ |
144 | __alloc_bootmem_low_nopanic(x, PAGE_SIZE, 0) | |
2d0aae41 TH |
145 | #define alloc_bootmem_low_pages(x) \ |
146 | __alloc_bootmem_low(x, PAGE_SIZE, 0) | |
1da177e4 | 147 | #define alloc_bootmem_low_pages_node(pgdat, x) \ |
71fb2e8f | 148 | __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0) |
c6af5e9f | 149 | |
26f09e9b SS |
150 | |
151 | #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) | |
152 | ||
153 | /* FIXME: use MEMBLOCK_ALLOC_* variants here */ | |
154 | #define BOOTMEM_ALLOC_ACCESSIBLE 0 | |
155 | #define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0) | |
156 | ||
157 | /* FIXME: Move to memblock.h at a point where we remove nobootmem.c */ | |
158 | void *memblock_virt_alloc_try_nid_nopanic(phys_addr_t size, | |
159 | phys_addr_t align, phys_addr_t min_addr, | |
160 | phys_addr_t max_addr, int nid); | |
161 | void *memblock_virt_alloc_try_nid(phys_addr_t size, phys_addr_t align, | |
162 | phys_addr_t min_addr, phys_addr_t max_addr, int nid); | |
163 | void __memblock_free_early(phys_addr_t base, phys_addr_t size); | |
164 | void __memblock_free_late(phys_addr_t base, phys_addr_t size); | |
165 | ||
166 | static inline void * __init memblock_virt_alloc( | |
167 | phys_addr_t size, phys_addr_t align) | |
168 | { | |
169 | return memblock_virt_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT, | |
170 | BOOTMEM_ALLOC_ACCESSIBLE, | |
171 | NUMA_NO_NODE); | |
172 | } | |
173 | ||
174 | static inline void * __init memblock_virt_alloc_nopanic( | |
175 | phys_addr_t size, phys_addr_t align) | |
176 | { | |
177 | return memblock_virt_alloc_try_nid_nopanic(size, align, | |
178 | BOOTMEM_LOW_LIMIT, | |
179 | BOOTMEM_ALLOC_ACCESSIBLE, | |
180 | NUMA_NO_NODE); | |
181 | } | |
182 | ||
ad6492b8 YL |
183 | #ifndef ARCH_LOW_ADDRESS_LIMIT |
184 | #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL | |
185 | #endif | |
186 | ||
187 | static inline void * __init memblock_virt_alloc_low( | |
188 | phys_addr_t size, phys_addr_t align) | |
189 | { | |
190 | return memblock_virt_alloc_try_nid(size, align, | |
191 | BOOTMEM_LOW_LIMIT, | |
192 | ARCH_LOW_ADDRESS_LIMIT, | |
193 | NUMA_NO_NODE); | |
194 | } | |
195 | static inline void * __init memblock_virt_alloc_low_nopanic( | |
196 | phys_addr_t size, phys_addr_t align) | |
197 | { | |
198 | return memblock_virt_alloc_try_nid_nopanic(size, align, | |
199 | BOOTMEM_LOW_LIMIT, | |
200 | ARCH_LOW_ADDRESS_LIMIT, | |
201 | NUMA_NO_NODE); | |
202 | } | |
203 | ||
26f09e9b SS |
204 | static inline void * __init memblock_virt_alloc_from_nopanic( |
205 | phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) | |
206 | { | |
207 | return memblock_virt_alloc_try_nid_nopanic(size, align, min_addr, | |
208 | BOOTMEM_ALLOC_ACCESSIBLE, | |
209 | NUMA_NO_NODE); | |
210 | } | |
211 | ||
212 | static inline void * __init memblock_virt_alloc_node( | |
213 | phys_addr_t size, int nid) | |
214 | { | |
215 | return memblock_virt_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT, | |
216 | BOOTMEM_ALLOC_ACCESSIBLE, nid); | |
217 | } | |
218 | ||
219 | static inline void * __init memblock_virt_alloc_node_nopanic( | |
220 | phys_addr_t size, int nid) | |
221 | { | |
222 | return memblock_virt_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT, | |
223 | BOOTMEM_ALLOC_ACCESSIBLE, | |
224 | nid); | |
225 | } | |
226 | ||
227 | static inline void __init memblock_free_early( | |
228 | phys_addr_t base, phys_addr_t size) | |
229 | { | |
230 | __memblock_free_early(base, size); | |
231 | } | |
232 | ||
233 | static inline void __init memblock_free_early_nid( | |
234 | phys_addr_t base, phys_addr_t size, int nid) | |
235 | { | |
236 | __memblock_free_early(base, size); | |
237 | } | |
238 | ||
239 | static inline void __init memblock_free_late( | |
240 | phys_addr_t base, phys_addr_t size) | |
241 | { | |
242 | __memblock_free_late(base, size); | |
243 | } | |
244 | ||
245 | #else | |
246 | ||
247 | #define BOOTMEM_ALLOC_ACCESSIBLE 0 | |
248 | ||
249 | ||
250 | /* Fall back to all the existing bootmem APIs */ | |
251 | static inline void * __init memblock_virt_alloc( | |
252 | phys_addr_t size, phys_addr_t align) | |
253 | { | |
254 | if (!align) | |
255 | align = SMP_CACHE_BYTES; | |
256 | return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT); | |
257 | } | |
258 | ||
259 | static inline void * __init memblock_virt_alloc_nopanic( | |
260 | phys_addr_t size, phys_addr_t align) | |
261 | { | |
262 | if (!align) | |
263 | align = SMP_CACHE_BYTES; | |
264 | return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT); | |
265 | } | |
266 | ||
ad6492b8 YL |
267 | static inline void * __init memblock_virt_alloc_low( |
268 | phys_addr_t size, phys_addr_t align) | |
269 | { | |
270 | if (!align) | |
271 | align = SMP_CACHE_BYTES; | |
07bacb38 | 272 | return __alloc_bootmem_low(size, align, 0); |
ad6492b8 YL |
273 | } |
274 | ||
275 | static inline void * __init memblock_virt_alloc_low_nopanic( | |
276 | phys_addr_t size, phys_addr_t align) | |
277 | { | |
278 | if (!align) | |
279 | align = SMP_CACHE_BYTES; | |
07bacb38 | 280 | return __alloc_bootmem_low_nopanic(size, align, 0); |
ad6492b8 YL |
281 | } |
282 | ||
26f09e9b SS |
283 | static inline void * __init memblock_virt_alloc_from_nopanic( |
284 | phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) | |
285 | { | |
286 | return __alloc_bootmem_nopanic(size, align, min_addr); | |
287 | } | |
288 | ||
289 | static inline void * __init memblock_virt_alloc_node( | |
290 | phys_addr_t size, int nid) | |
291 | { | |
292 | return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES, | |
293 | BOOTMEM_LOW_LIMIT); | |
294 | } | |
295 | ||
296 | static inline void * __init memblock_virt_alloc_node_nopanic( | |
297 | phys_addr_t size, int nid) | |
298 | { | |
299 | return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size, | |
300 | SMP_CACHE_BYTES, | |
301 | BOOTMEM_LOW_LIMIT); | |
302 | } | |
303 | ||
304 | static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size, | |
305 | phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid) | |
306 | { | |
307 | return __alloc_bootmem_node_high(NODE_DATA(nid), size, align, | |
308 | min_addr); | |
309 | } | |
310 | ||
311 | static inline void * __init memblock_virt_alloc_try_nid_nopanic( | |
312 | phys_addr_t size, phys_addr_t align, | |
313 | phys_addr_t min_addr, phys_addr_t max_addr, int nid) | |
314 | { | |
315 | return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align, | |
316 | min_addr, max_addr); | |
317 | } | |
318 | ||
319 | static inline void __init memblock_free_early( | |
320 | phys_addr_t base, phys_addr_t size) | |
321 | { | |
322 | free_bootmem(base, size); | |
323 | } | |
324 | ||
325 | static inline void __init memblock_free_early_nid( | |
326 | phys_addr_t base, phys_addr_t size, int nid) | |
327 | { | |
328 | free_bootmem_node(NODE_DATA(nid), base, size); | |
329 | } | |
330 | ||
331 | static inline void __init memblock_free_late( | |
332 | phys_addr_t base, phys_addr_t size) | |
333 | { | |
334 | free_bootmem_late(base, size); | |
335 | } | |
336 | #endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */ | |
337 | ||
6f167ec7 DH |
338 | #ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP |
339 | extern void *alloc_remap(int nid, unsigned long size); | |
340 | #else | |
341 | static inline void *alloc_remap(int nid, unsigned long size) | |
342 | { | |
343 | return NULL; | |
344 | } | |
f71bf0ca | 345 | #endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */ |
6f167ec7 | 346 | |
f71bf0ca FBH |
347 | extern void *alloc_large_system_hash(const char *tablename, |
348 | unsigned long bucketsize, | |
349 | unsigned long numentries, | |
350 | int scale, | |
351 | int flags, | |
352 | unsigned int *_hash_shift, | |
353 | unsigned int *_hash_mask, | |
31fe62b9 TB |
354 | unsigned long low_limit, |
355 | unsigned long high_limit); | |
1da177e4 | 356 | |
04903664 | 357 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ |
2c85f51d JB |
358 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min |
359 | * shift passed via *_hash_shift */ | |
1da177e4 | 360 | |
c2fdf3a9 AB |
361 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have |
362 | * sufficient vmalloc space. | |
1da177e4 | 363 | */ |
a9919c79 RV |
364 | #ifdef CONFIG_NUMA |
365 | #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) | |
366 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ | |
1da177e4 | 367 | #else |
a9919c79 | 368 | #define hashdist (0) |
1da177e4 | 369 | #endif |
1da177e4 LT |
370 | |
371 | ||
372 | #endif /* _LINUX_BOOTMEM_H */ |