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95f72d1e YL |
1 | #ifndef _LINUX_MEMBLOCK_H |
2 | #define _LINUX_MEMBLOCK_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> | |
57c8a661 MR |
18 | #include <asm/dma.h> |
19 | ||
20 | extern unsigned long max_low_pfn; | |
21 | extern unsigned long min_low_pfn; | |
22 | ||
23 | /* | |
24 | * highest page | |
25 | */ | |
26 | extern unsigned long max_pfn; | |
27 | /* | |
28 | * highest possible page | |
29 | */ | |
30 | extern unsigned long long max_possible_pfn; | |
95f72d1e | 31 | |
37d8d4bf | 32 | #define INIT_MEMBLOCK_REGIONS 128 |
70210ed9 | 33 | #define INIT_PHYSMEM_REGIONS 4 |
95f72d1e | 34 | |
9a0de1bf MR |
35 | /** |
36 | * enum memblock_flags - definition of memory region attributes | |
37 | * @MEMBLOCK_NONE: no special request | |
38 | * @MEMBLOCK_HOTPLUG: hotpluggable region | |
39 | * @MEMBLOCK_MIRROR: mirrored region | |
40 | * @MEMBLOCK_NOMAP: don't add to kernel direct mapping | |
41 | */ | |
e1720fee | 42 | enum memblock_flags { |
fc6daaf9 TL |
43 | MEMBLOCK_NONE = 0x0, /* No special request */ |
44 | MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */ | |
a3f5bafc | 45 | MEMBLOCK_MIRROR = 0x2, /* mirrored region */ |
bf3d3cc5 | 46 | MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ |
fc6daaf9 | 47 | }; |
66b16edf | 48 | |
9a0de1bf MR |
49 | /** |
50 | * struct memblock_region - represents a memory region | |
51 | * @base: physical address of the region | |
52 | * @size: size of the region | |
53 | * @flags: memory region attributes | |
54 | * @nid: NUMA node id | |
55 | */ | |
e3239ff9 | 56 | struct memblock_region { |
2898cc4c BH |
57 | phys_addr_t base; |
58 | phys_addr_t size; | |
e1720fee | 59 | enum memblock_flags flags; |
7c0caeb8 TH |
60 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
61 | int nid; | |
62 | #endif | |
95f72d1e YL |
63 | }; |
64 | ||
9a0de1bf MR |
65 | /** |
66 | * struct memblock_type - collection of memory regions of certain type | |
67 | * @cnt: number of regions | |
68 | * @max: size of the allocated array | |
69 | * @total_size: size of all regions | |
70 | * @regions: array of regions | |
71 | * @name: the memory type symbolic name | |
72 | */ | |
e3239ff9 | 73 | struct memblock_type { |
9a0de1bf MR |
74 | unsigned long cnt; |
75 | unsigned long max; | |
76 | phys_addr_t total_size; | |
bf23c51f | 77 | struct memblock_region *regions; |
0262d9c8 | 78 | char *name; |
95f72d1e YL |
79 | }; |
80 | ||
9a0de1bf MR |
81 | /** |
82 | * struct memblock - memblock allocator metadata | |
83 | * @bottom_up: is bottom up direction? | |
84 | * @current_limit: physical address of the current allocation limit | |
85 | * @memory: usabe memory regions | |
86 | * @reserved: reserved memory regions | |
87 | * @physmem: all physical memory | |
88 | */ | |
95f72d1e | 89 | struct memblock { |
79442ed1 | 90 | bool bottom_up; /* is bottom up direction? */ |
2898cc4c | 91 | phys_addr_t current_limit; |
e3239ff9 BH |
92 | struct memblock_type memory; |
93 | struct memblock_type reserved; | |
70210ed9 PH |
94 | #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
95 | struct memblock_type physmem; | |
96 | #endif | |
95f72d1e YL |
97 | }; |
98 | ||
99 | extern struct memblock memblock; | |
5e63cf43 | 100 | extern int memblock_debug; |
5e63cf43 | 101 | |
036fbb21 KS |
102 | #ifdef CONFIG_ARCH_DISCARD_MEMBLOCK |
103 | #define __init_memblock __meminit | |
104 | #define __initdata_memblock __meminitdata | |
3010f876 | 105 | void memblock_discard(void); |
036fbb21 KS |
106 | #else |
107 | #define __init_memblock | |
108 | #define __initdata_memblock | |
109 | #endif | |
110 | ||
5e63cf43 YL |
111 | #define memblock_dbg(fmt, ...) \ |
112 | if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
95f72d1e | 113 | |
87029ee9 | 114 | phys_addr_t memblock_find_in_range_node(phys_addr_t size, phys_addr_t align, |
ba6c19fd | 115 | phys_addr_t start, phys_addr_t end, |
e1720fee | 116 | int nid, enum memblock_flags flags); |
fc769a8e TH |
117 | phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end, |
118 | phys_addr_t size, phys_addr_t align); | |
1aadc056 | 119 | void memblock_allow_resize(void); |
7fb0bc3f | 120 | int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid); |
581adcbe TH |
121 | int memblock_add(phys_addr_t base, phys_addr_t size); |
122 | int memblock_remove(phys_addr_t base, phys_addr_t size); | |
123 | int memblock_free(phys_addr_t base, phys_addr_t size); | |
124 | int memblock_reserve(phys_addr_t base, phys_addr_t size); | |
6ede1fd3 | 125 | void memblock_trim_memory(phys_addr_t align); |
95cf82ec TC |
126 | bool memblock_overlaps_region(struct memblock_type *type, |
127 | phys_addr_t base, phys_addr_t size); | |
66b16edf TC |
128 | int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); |
129 | int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); | |
a3f5bafc | 130 | int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); |
bf3d3cc5 | 131 | int memblock_mark_nomap(phys_addr_t base, phys_addr_t size); |
4c546b8a | 132 | int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); |
e1720fee | 133 | enum memblock_flags choose_memblock_flags(void); |
f1af9d3a | 134 | |
57c8a661 MR |
135 | unsigned long memblock_free_all(void); |
136 | void reset_node_managed_pages(pg_data_t *pgdat); | |
137 | void reset_all_zones_managed_pages(void); | |
138 | ||
f1af9d3a PH |
139 | /* Low level functions */ |
140 | int memblock_add_range(struct memblock_type *type, | |
141 | phys_addr_t base, phys_addr_t size, | |
e1720fee | 142 | int nid, enum memblock_flags flags); |
f1af9d3a | 143 | |
e1720fee | 144 | void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 145 | struct memblock_type *type_a, |
f1af9d3a PH |
146 | struct memblock_type *type_b, phys_addr_t *out_start, |
147 | phys_addr_t *out_end, int *out_nid); | |
148 | ||
e1720fee | 149 | void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 150 | struct memblock_type *type_a, |
f1af9d3a PH |
151 | struct memblock_type *type_b, phys_addr_t *out_start, |
152 | phys_addr_t *out_end, int *out_nid); | |
153 | ||
8e7a7f86 | 154 | void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start, |
ba6c19fd | 155 | phys_addr_t *out_end); |
8e7a7f86 | 156 | |
3010f876 PT |
157 | void __memblock_free_early(phys_addr_t base, phys_addr_t size); |
158 | void __memblock_free_late(phys_addr_t base, phys_addr_t size); | |
159 | ||
f1af9d3a PH |
160 | /** |
161 | * for_each_mem_range - iterate through memblock areas from type_a and not | |
162 | * included in type_b. Or just type_a if type_b is NULL. | |
163 | * @i: u64 used as loop variable | |
164 | * @type_a: ptr to memblock_type to iterate | |
165 | * @type_b: ptr to memblock_type which excludes from the iteration | |
166 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 167 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
168 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
169 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
170 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
171 | */ | |
fc6daaf9 | 172 | #define for_each_mem_range(i, type_a, type_b, nid, flags, \ |
f1af9d3a | 173 | p_start, p_end, p_nid) \ |
fc6daaf9 | 174 | for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
175 | p_start, p_end, p_nid); \ |
176 | i != (u64)ULLONG_MAX; \ | |
fc6daaf9 | 177 | __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
178 | p_start, p_end, p_nid)) |
179 | ||
180 | /** | |
181 | * for_each_mem_range_rev - reverse iterate through memblock areas from | |
182 | * type_a and not included in type_b. Or just type_a if type_b is NULL. | |
183 | * @i: u64 used as loop variable | |
184 | * @type_a: ptr to memblock_type to iterate | |
185 | * @type_b: ptr to memblock_type which excludes from the iteration | |
186 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 187 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
188 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
189 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
190 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
191 | */ | |
fc6daaf9 | 192 | #define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \ |
f1af9d3a PH |
193 | p_start, p_end, p_nid) \ |
194 | for (i = (u64)ULLONG_MAX, \ | |
fc6daaf9 | 195 | __next_mem_range_rev(&i, nid, flags, type_a, type_b,\ |
ba6c19fd | 196 | p_start, p_end, p_nid); \ |
f1af9d3a | 197 | i != (u64)ULLONG_MAX; \ |
fc6daaf9 | 198 | __next_mem_range_rev(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
199 | p_start, p_end, p_nid)) |
200 | ||
8e7a7f86 RH |
201 | /** |
202 | * for_each_reserved_mem_region - iterate over all reserved memblock areas | |
203 | * @i: u64 used as loop variable | |
204 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
205 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
206 | * | |
207 | * Walks over reserved areas of memblock. Available as soon as memblock | |
208 | * is initialized. | |
209 | */ | |
210 | #define for_each_reserved_mem_region(i, p_start, p_end) \ | |
ba6c19fd | 211 | for (i = 0UL, __next_reserved_mem_region(&i, p_start, p_end); \ |
8e7a7f86 RH |
212 | i != (u64)ULLONG_MAX; \ |
213 | __next_reserved_mem_region(&i, p_start, p_end)) | |
214 | ||
55ac590c TC |
215 | static inline bool memblock_is_hotpluggable(struct memblock_region *m) |
216 | { | |
217 | return m->flags & MEMBLOCK_HOTPLUG; | |
218 | } | |
219 | ||
a3f5bafc TL |
220 | static inline bool memblock_is_mirror(struct memblock_region *m) |
221 | { | |
222 | return m->flags & MEMBLOCK_MIRROR; | |
223 | } | |
224 | ||
bf3d3cc5 AB |
225 | static inline bool memblock_is_nomap(struct memblock_region *m) |
226 | { | |
227 | return m->flags & MEMBLOCK_NOMAP; | |
228 | } | |
229 | ||
0ee332c1 | 230 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e76b63f8 YL |
231 | int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, |
232 | unsigned long *end_pfn); | |
0ee332c1 TH |
233 | void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, |
234 | unsigned long *out_end_pfn, int *out_nid); | |
235 | ||
236 | /** | |
237 | * for_each_mem_pfn_range - early memory pfn range iterator | |
238 | * @i: an integer used as loop variable | |
239 | * @nid: node selector, %MAX_NUMNODES for all nodes | |
240 | * @p_start: ptr to ulong for start pfn of the range, can be %NULL | |
241 | * @p_end: ptr to ulong for end pfn of the range, can be %NULL | |
242 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
243 | * | |
f2d52fe5 | 244 | * Walks over configured memory ranges. |
0ee332c1 TH |
245 | */ |
246 | #define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \ | |
247 | for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \ | |
248 | i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid)) | |
249 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
250 | ||
35fd0808 TH |
251 | /** |
252 | * for_each_free_mem_range - iterate through free memblock areas | |
253 | * @i: u64 used as loop variable | |
b1154233 | 254 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 255 | * @flags: pick from blocks based on memory attributes |
35fd0808 TH |
256 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
257 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
258 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
259 | * | |
260 | * Walks over free (memory && !reserved) areas of memblock. Available as | |
261 | * soon as memblock is initialized. | |
262 | */ | |
fc6daaf9 | 263 | #define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \ |
f1af9d3a | 264 | for_each_mem_range(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 265 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 TH |
266 | |
267 | /** | |
268 | * for_each_free_mem_range_reverse - rev-iterate through free memblock areas | |
269 | * @i: u64 used as loop variable | |
b1154233 | 270 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 271 | * @flags: pick from blocks based on memory attributes |
7bd0b0f0 TH |
272 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
273 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
274 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
275 | * | |
276 | * Walks over free (memory && !reserved) areas of memblock in reverse | |
277 | * order. Available as soon as memblock is initialized. | |
278 | */ | |
fc6daaf9 TL |
279 | #define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \ |
280 | p_nid) \ | |
f1af9d3a | 281 | for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 282 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 | 283 | |
66b16edf | 284 | static inline void memblock_set_region_flags(struct memblock_region *r, |
e1720fee | 285 | enum memblock_flags flags) |
66b16edf TC |
286 | { |
287 | r->flags |= flags; | |
288 | } | |
289 | ||
290 | static inline void memblock_clear_region_flags(struct memblock_region *r, | |
e1720fee | 291 | enum memblock_flags flags) |
66b16edf TC |
292 | { |
293 | r->flags &= ~flags; | |
294 | } | |
295 | ||
7c0caeb8 | 296 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e7e8de59 TC |
297 | int memblock_set_node(phys_addr_t base, phys_addr_t size, |
298 | struct memblock_type *type, int nid); | |
7c0caeb8 TH |
299 | |
300 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
301 | { | |
302 | r->nid = nid; | |
303 | } | |
304 | ||
305 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
306 | { | |
307 | return r->nid; | |
308 | } | |
309 | #else | |
310 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
311 | { | |
312 | } | |
313 | ||
314 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
315 | { | |
316 | return 0; | |
317 | } | |
318 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
319 | ||
57c8a661 MR |
320 | /* Flags for memblock allocation APIs */ |
321 | #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0) | |
322 | #define MEMBLOCK_ALLOC_ACCESSIBLE 0 | |
323 | ||
324 | /* We are using top down, so it is safe to use 0 here */ | |
325 | #define MEMBLOCK_LOW_LIMIT 0 | |
326 | ||
327 | #ifndef ARCH_LOW_ADDRESS_LIMIT | |
328 | #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL | |
329 | #endif | |
330 | ||
9a8dd708 MR |
331 | phys_addr_t memblock_phys_alloc_nid(phys_addr_t size, phys_addr_t align, int nid); |
332 | phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid); | |
9d1e2492 | 333 | |
9a8dd708 | 334 | phys_addr_t memblock_phys_alloc(phys_addr_t size, phys_addr_t align); |
e63075a3 | 335 | |
57c8a661 MR |
336 | void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align, |
337 | phys_addr_t min_addr, phys_addr_t max_addr, | |
338 | int nid); | |
339 | void *memblock_alloc_try_nid_nopanic(phys_addr_t size, phys_addr_t align, | |
340 | phys_addr_t min_addr, phys_addr_t max_addr, | |
341 | int nid); | |
342 | void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, | |
343 | phys_addr_t min_addr, phys_addr_t max_addr, | |
344 | int nid); | |
345 | ||
346 | static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align) | |
347 | { | |
348 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
349 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
350 | } | |
351 | ||
352 | static inline void * __init memblock_alloc_raw(phys_addr_t size, | |
353 | phys_addr_t align) | |
354 | { | |
355 | return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT, | |
356 | MEMBLOCK_ALLOC_ACCESSIBLE, | |
357 | NUMA_NO_NODE); | |
358 | } | |
359 | ||
360 | static inline void * __init memblock_alloc_from(phys_addr_t size, | |
361 | phys_addr_t align, | |
362 | phys_addr_t min_addr) | |
363 | { | |
364 | return memblock_alloc_try_nid(size, align, min_addr, | |
365 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
366 | } | |
367 | ||
368 | static inline void * __init memblock_alloc_nopanic(phys_addr_t size, | |
369 | phys_addr_t align) | |
370 | { | |
371 | return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT, | |
372 | MEMBLOCK_ALLOC_ACCESSIBLE, | |
373 | NUMA_NO_NODE); | |
374 | } | |
375 | ||
376 | static inline void * __init memblock_alloc_low(phys_addr_t size, | |
377 | phys_addr_t align) | |
378 | { | |
379 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
380 | ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE); | |
381 | } | |
382 | static inline void * __init memblock_alloc_low_nopanic(phys_addr_t size, | |
383 | phys_addr_t align) | |
384 | { | |
385 | return memblock_alloc_try_nid_nopanic(size, align, MEMBLOCK_LOW_LIMIT, | |
386 | ARCH_LOW_ADDRESS_LIMIT, | |
387 | NUMA_NO_NODE); | |
388 | } | |
389 | ||
390 | static inline void * __init memblock_alloc_from_nopanic(phys_addr_t size, | |
391 | phys_addr_t align, | |
392 | phys_addr_t min_addr) | |
393 | { | |
394 | return memblock_alloc_try_nid_nopanic(size, align, min_addr, | |
395 | MEMBLOCK_ALLOC_ACCESSIBLE, | |
396 | NUMA_NO_NODE); | |
397 | } | |
398 | ||
399 | static inline void * __init memblock_alloc_node(phys_addr_t size, | |
400 | phys_addr_t align, int nid) | |
401 | { | |
402 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
403 | MEMBLOCK_ALLOC_ACCESSIBLE, nid); | |
404 | } | |
405 | ||
406 | static inline void * __init memblock_alloc_node_nopanic(phys_addr_t size, | |
407 | int nid) | |
408 | { | |
7e1c4e27 MR |
409 | return memblock_alloc_try_nid_nopanic(size, SMP_CACHE_BYTES, |
410 | MEMBLOCK_LOW_LIMIT, | |
57c8a661 MR |
411 | MEMBLOCK_ALLOC_ACCESSIBLE, nid); |
412 | } | |
413 | ||
414 | static inline void __init memblock_free_early(phys_addr_t base, | |
415 | phys_addr_t size) | |
416 | { | |
417 | __memblock_free_early(base, size); | |
418 | } | |
419 | ||
420 | static inline void __init memblock_free_early_nid(phys_addr_t base, | |
421 | phys_addr_t size, int nid) | |
422 | { | |
423 | __memblock_free_early(base, size); | |
424 | } | |
425 | ||
426 | static inline void __init memblock_free_late(phys_addr_t base, phys_addr_t size) | |
427 | { | |
428 | __memblock_free_late(base, size); | |
429 | } | |
430 | ||
79442ed1 TC |
431 | /* |
432 | * Set the allocation direction to bottom-up or top-down. | |
433 | */ | |
2cfb3665 | 434 | static inline void __init memblock_set_bottom_up(bool enable) |
79442ed1 TC |
435 | { |
436 | memblock.bottom_up = enable; | |
437 | } | |
438 | ||
439 | /* | |
440 | * Check if the allocation direction is bottom-up or not. | |
441 | * if this is true, that said, memblock will allocate memory | |
442 | * in bottom-up direction. | |
443 | */ | |
444 | static inline bool memblock_bottom_up(void) | |
445 | { | |
446 | return memblock.bottom_up; | |
447 | } | |
79442ed1 | 448 | |
2bfc2862 | 449 | phys_addr_t __init memblock_alloc_range(phys_addr_t size, phys_addr_t align, |
fc6daaf9 | 450 | phys_addr_t start, phys_addr_t end, |
e1720fee | 451 | enum memblock_flags flags); |
b575454f NP |
452 | phys_addr_t memblock_alloc_base_nid(phys_addr_t size, |
453 | phys_addr_t align, phys_addr_t max_addr, | |
e1720fee | 454 | int nid, enum memblock_flags flags); |
581adcbe TH |
455 | phys_addr_t memblock_alloc_base(phys_addr_t size, phys_addr_t align, |
456 | phys_addr_t max_addr); | |
457 | phys_addr_t __memblock_alloc_base(phys_addr_t size, phys_addr_t align, | |
458 | phys_addr_t max_addr); | |
459 | phys_addr_t memblock_phys_mem_size(void); | |
8907de5d | 460 | phys_addr_t memblock_reserved_size(void); |
595ad9af | 461 | phys_addr_t memblock_mem_size(unsigned long limit_pfn); |
581adcbe TH |
462 | phys_addr_t memblock_start_of_DRAM(void); |
463 | phys_addr_t memblock_end_of_DRAM(void); | |
464 | void memblock_enforce_memory_limit(phys_addr_t memory_limit); | |
c9ca9b4e | 465 | void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size); |
a571d4eb | 466 | void memblock_mem_limit_remove_map(phys_addr_t limit); |
b4ad0c7e | 467 | bool memblock_is_memory(phys_addr_t addr); |
937f0c26 YB |
468 | bool memblock_is_map_memory(phys_addr_t addr); |
469 | bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size); | |
b4ad0c7e | 470 | bool memblock_is_reserved(phys_addr_t addr); |
c5c5c9d1 | 471 | bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size); |
581adcbe | 472 | |
4ff7b82f TH |
473 | extern void __memblock_dump_all(void); |
474 | ||
475 | static inline void memblock_dump_all(void) | |
476 | { | |
477 | if (memblock_debug) | |
478 | __memblock_dump_all(); | |
479 | } | |
95f72d1e | 480 | |
e63075a3 BH |
481 | /** |
482 | * memblock_set_current_limit - Set the current allocation limit to allow | |
483 | * limiting allocations to what is currently | |
484 | * accessible during boot | |
485 | * @limit: New limit value (physical address) | |
486 | */ | |
581adcbe | 487 | void memblock_set_current_limit(phys_addr_t limit); |
e63075a3 | 488 | |
35a1f0bd | 489 | |
fec51014 LA |
490 | phys_addr_t memblock_get_current_limit(void); |
491 | ||
5b385f25 BH |
492 | /* |
493 | * pfn conversion functions | |
494 | * | |
495 | * While the memory MEMBLOCKs should always be page aligned, the reserved | |
496 | * MEMBLOCKs may not be. This accessor attempt to provide a very clear | |
497 | * idea of what they return for such non aligned MEMBLOCKs. | |
498 | */ | |
499 | ||
500 | /** | |
47cec443 | 501 | * memblock_region_memory_base_pfn - get the lowest pfn of the memory region |
5b385f25 | 502 | * @reg: memblock_region structure |
47cec443 MR |
503 | * |
504 | * Return: the lowest pfn intersecting with the memory region | |
5b385f25 | 505 | */ |
c7fc2de0 | 506 | static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg) |
5b385f25 | 507 | { |
c7fc2de0 | 508 | return PFN_UP(reg->base); |
5b385f25 BH |
509 | } |
510 | ||
511 | /** | |
47cec443 | 512 | * memblock_region_memory_end_pfn - get the end pfn of the memory region |
5b385f25 | 513 | * @reg: memblock_region structure |
47cec443 MR |
514 | * |
515 | * Return: the end_pfn of the reserved region | |
5b385f25 | 516 | */ |
c7fc2de0 | 517 | static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg) |
5b385f25 | 518 | { |
c7fc2de0 | 519 | return PFN_DOWN(reg->base + reg->size); |
5b385f25 BH |
520 | } |
521 | ||
522 | /** | |
47cec443 | 523 | * memblock_region_reserved_base_pfn - get the lowest pfn of the reserved region |
5b385f25 | 524 | * @reg: memblock_region structure |
47cec443 MR |
525 | * |
526 | * Return: the lowest pfn intersecting with the reserved region | |
5b385f25 | 527 | */ |
c7fc2de0 | 528 | static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg) |
5b385f25 | 529 | { |
c7fc2de0 | 530 | return PFN_DOWN(reg->base); |
5b385f25 BH |
531 | } |
532 | ||
533 | /** | |
47cec443 | 534 | * memblock_region_reserved_end_pfn - get the end pfn of the reserved region |
5b385f25 | 535 | * @reg: memblock_region structure |
47cec443 MR |
536 | * |
537 | * Return: the end_pfn of the reserved region | |
5b385f25 | 538 | */ |
c7fc2de0 | 539 | static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg) |
5b385f25 | 540 | { |
c7fc2de0 | 541 | return PFN_UP(reg->base + reg->size); |
5b385f25 BH |
542 | } |
543 | ||
544 | #define for_each_memblock(memblock_type, region) \ | |
ba6c19fd | 545 | for (region = memblock.memblock_type.regions; \ |
5b385f25 BH |
546 | region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \ |
547 | region++) | |
548 | ||
66e8b438 GK |
549 | #define for_each_memblock_type(i, memblock_type, rgn) \ |
550 | for (i = 0, rgn = &memblock_type->regions[0]; \ | |
551 | i < memblock_type->cnt; \ | |
552 | i++, rgn = &memblock_type->regions[i]) | |
5b385f25 | 553 | |
57c8a661 MR |
554 | extern void *alloc_large_system_hash(const char *tablename, |
555 | unsigned long bucketsize, | |
556 | unsigned long numentries, | |
557 | int scale, | |
558 | int flags, | |
559 | unsigned int *_hash_shift, | |
560 | unsigned int *_hash_mask, | |
561 | unsigned long low_limit, | |
562 | unsigned long high_limit); | |
563 | ||
564 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ | |
565 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min | |
566 | * shift passed via *_hash_shift */ | |
567 | #define HASH_ZERO 0x00000004 /* Zero allocated hash table */ | |
568 | ||
569 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have | |
570 | * sufficient vmalloc space. | |
571 | */ | |
572 | #ifdef CONFIG_NUMA | |
573 | #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) | |
574 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ | |
575 | #else | |
576 | #define hashdist (0) | |
577 | #endif | |
578 | ||
4a20799d | 579 | #ifdef CONFIG_MEMTEST |
7f70baee | 580 | extern void early_memtest(phys_addr_t start, phys_addr_t end); |
4a20799d | 581 | #else |
7f70baee | 582 | static inline void early_memtest(phys_addr_t start, phys_addr_t end) |
4a20799d VM |
583 | { |
584 | } | |
585 | #endif | |
f0b37fad | 586 | |
95f72d1e YL |
587 | #endif /* __KERNEL__ */ |
588 | ||
589 | #endif /* _LINUX_MEMBLOCK_H */ |