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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 | |
9a0de1bf MR |
32 | /** |
33 | * enum memblock_flags - definition of memory region attributes | |
34 | * @MEMBLOCK_NONE: no special request | |
35 | * @MEMBLOCK_HOTPLUG: hotpluggable region | |
36 | * @MEMBLOCK_MIRROR: mirrored region | |
37 | * @MEMBLOCK_NOMAP: don't add to kernel direct mapping | |
38 | */ | |
e1720fee | 39 | enum memblock_flags { |
fc6daaf9 TL |
40 | MEMBLOCK_NONE = 0x0, /* No special request */ |
41 | MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */ | |
a3f5bafc | 42 | MEMBLOCK_MIRROR = 0x2, /* mirrored region */ |
bf3d3cc5 | 43 | MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ |
fc6daaf9 | 44 | }; |
66b16edf | 45 | |
9a0de1bf MR |
46 | /** |
47 | * struct memblock_region - represents a memory region | |
48 | * @base: physical address of the region | |
49 | * @size: size of the region | |
50 | * @flags: memory region attributes | |
51 | * @nid: NUMA node id | |
52 | */ | |
e3239ff9 | 53 | struct memblock_region { |
2898cc4c BH |
54 | phys_addr_t base; |
55 | phys_addr_t size; | |
e1720fee | 56 | enum memblock_flags flags; |
7c0caeb8 TH |
57 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
58 | int nid; | |
59 | #endif | |
95f72d1e YL |
60 | }; |
61 | ||
9a0de1bf MR |
62 | /** |
63 | * struct memblock_type - collection of memory regions of certain type | |
64 | * @cnt: number of regions | |
65 | * @max: size of the allocated array | |
66 | * @total_size: size of all regions | |
67 | * @regions: array of regions | |
68 | * @name: the memory type symbolic name | |
69 | */ | |
e3239ff9 | 70 | struct memblock_type { |
9a0de1bf MR |
71 | unsigned long cnt; |
72 | unsigned long max; | |
73 | phys_addr_t total_size; | |
bf23c51f | 74 | struct memblock_region *regions; |
0262d9c8 | 75 | char *name; |
95f72d1e YL |
76 | }; |
77 | ||
9a0de1bf MR |
78 | /** |
79 | * struct memblock - memblock allocator metadata | |
80 | * @bottom_up: is bottom up direction? | |
81 | * @current_limit: physical address of the current allocation limit | |
82 | * @memory: usabe memory regions | |
83 | * @reserved: reserved memory regions | |
84 | * @physmem: all physical memory | |
85 | */ | |
95f72d1e | 86 | struct memblock { |
79442ed1 | 87 | bool bottom_up; /* is bottom up direction? */ |
2898cc4c | 88 | phys_addr_t current_limit; |
e3239ff9 BH |
89 | struct memblock_type memory; |
90 | struct memblock_type reserved; | |
70210ed9 PH |
91 | #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
92 | struct memblock_type physmem; | |
93 | #endif | |
95f72d1e YL |
94 | }; |
95 | ||
96 | extern struct memblock memblock; | |
5e63cf43 | 97 | extern int memblock_debug; |
5e63cf43 | 98 | |
036fbb21 KS |
99 | #ifdef CONFIG_ARCH_DISCARD_MEMBLOCK |
100 | #define __init_memblock __meminit | |
101 | #define __initdata_memblock __meminitdata | |
3010f876 | 102 | void memblock_discard(void); |
036fbb21 KS |
103 | #else |
104 | #define __init_memblock | |
105 | #define __initdata_memblock | |
106 | #endif | |
107 | ||
5e63cf43 YL |
108 | #define memblock_dbg(fmt, ...) \ |
109 | if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | |
95f72d1e | 110 | |
fc769a8e TH |
111 | phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end, |
112 | phys_addr_t size, phys_addr_t align); | |
1aadc056 | 113 | void memblock_allow_resize(void); |
7fb0bc3f | 114 | int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid); |
581adcbe TH |
115 | int memblock_add(phys_addr_t base, phys_addr_t size); |
116 | int memblock_remove(phys_addr_t base, phys_addr_t size); | |
117 | int memblock_free(phys_addr_t base, phys_addr_t size); | |
118 | int memblock_reserve(phys_addr_t base, phys_addr_t size); | |
6ede1fd3 | 119 | void memblock_trim_memory(phys_addr_t align); |
95cf82ec TC |
120 | bool memblock_overlaps_region(struct memblock_type *type, |
121 | phys_addr_t base, phys_addr_t size); | |
66b16edf TC |
122 | int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); |
123 | int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); | |
a3f5bafc | 124 | int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); |
bf3d3cc5 | 125 | int memblock_mark_nomap(phys_addr_t base, phys_addr_t size); |
4c546b8a | 126 | int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); |
f1af9d3a | 127 | |
57c8a661 MR |
128 | unsigned long memblock_free_all(void); |
129 | void reset_node_managed_pages(pg_data_t *pgdat); | |
130 | void reset_all_zones_managed_pages(void); | |
131 | ||
f1af9d3a PH |
132 | /* Low level functions */ |
133 | int memblock_add_range(struct memblock_type *type, | |
134 | phys_addr_t base, phys_addr_t size, | |
e1720fee | 135 | int nid, enum memblock_flags flags); |
f1af9d3a | 136 | |
e1720fee | 137 | void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 138 | struct memblock_type *type_a, |
f1af9d3a PH |
139 | struct memblock_type *type_b, phys_addr_t *out_start, |
140 | phys_addr_t *out_end, int *out_nid); | |
141 | ||
e1720fee | 142 | void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 143 | struct memblock_type *type_a, |
f1af9d3a PH |
144 | struct memblock_type *type_b, phys_addr_t *out_start, |
145 | phys_addr_t *out_end, int *out_nid); | |
146 | ||
8e7a7f86 | 147 | void __next_reserved_mem_region(u64 *idx, phys_addr_t *out_start, |
ba6c19fd | 148 | phys_addr_t *out_end); |
8e7a7f86 | 149 | |
3010f876 PT |
150 | void __memblock_free_late(phys_addr_t base, phys_addr_t size); |
151 | ||
f1af9d3a PH |
152 | /** |
153 | * for_each_mem_range - iterate through memblock areas from type_a and not | |
154 | * included in type_b. Or just type_a if type_b is NULL. | |
155 | * @i: u64 used as loop variable | |
156 | * @type_a: ptr to memblock_type to iterate | |
157 | * @type_b: ptr to memblock_type which excludes from the iteration | |
158 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 159 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
160 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
161 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
162 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
163 | */ | |
fc6daaf9 | 164 | #define for_each_mem_range(i, type_a, type_b, nid, flags, \ |
f1af9d3a | 165 | p_start, p_end, p_nid) \ |
fc6daaf9 | 166 | for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
167 | p_start, p_end, p_nid); \ |
168 | i != (u64)ULLONG_MAX; \ | |
fc6daaf9 | 169 | __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
170 | p_start, p_end, p_nid)) |
171 | ||
172 | /** | |
173 | * for_each_mem_range_rev - reverse iterate through memblock areas from | |
174 | * type_a and not included in type_b. Or just type_a if type_b is NULL. | |
175 | * @i: u64 used as loop variable | |
176 | * @type_a: ptr to memblock_type to iterate | |
177 | * @type_b: ptr to memblock_type which excludes from the iteration | |
178 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 179 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
180 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
181 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
182 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
183 | */ | |
fc6daaf9 | 184 | #define for_each_mem_range_rev(i, type_a, type_b, nid, flags, \ |
f1af9d3a PH |
185 | p_start, p_end, p_nid) \ |
186 | for (i = (u64)ULLONG_MAX, \ | |
fc6daaf9 | 187 | __next_mem_range_rev(&i, nid, flags, type_a, type_b,\ |
ba6c19fd | 188 | p_start, p_end, p_nid); \ |
f1af9d3a | 189 | i != (u64)ULLONG_MAX; \ |
fc6daaf9 | 190 | __next_mem_range_rev(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
191 | p_start, p_end, p_nid)) |
192 | ||
8e7a7f86 RH |
193 | /** |
194 | * for_each_reserved_mem_region - iterate over all reserved memblock areas | |
195 | * @i: u64 used as loop variable | |
196 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
197 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
198 | * | |
199 | * Walks over reserved areas of memblock. Available as soon as memblock | |
200 | * is initialized. | |
201 | */ | |
202 | #define for_each_reserved_mem_region(i, p_start, p_end) \ | |
ba6c19fd | 203 | for (i = 0UL, __next_reserved_mem_region(&i, p_start, p_end); \ |
8e7a7f86 RH |
204 | i != (u64)ULLONG_MAX; \ |
205 | __next_reserved_mem_region(&i, p_start, p_end)) | |
206 | ||
55ac590c TC |
207 | static inline bool memblock_is_hotpluggable(struct memblock_region *m) |
208 | { | |
209 | return m->flags & MEMBLOCK_HOTPLUG; | |
210 | } | |
211 | ||
a3f5bafc TL |
212 | static inline bool memblock_is_mirror(struct memblock_region *m) |
213 | { | |
214 | return m->flags & MEMBLOCK_MIRROR; | |
215 | } | |
216 | ||
bf3d3cc5 AB |
217 | static inline bool memblock_is_nomap(struct memblock_region *m) |
218 | { | |
219 | return m->flags & MEMBLOCK_NOMAP; | |
220 | } | |
221 | ||
0ee332c1 | 222 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e76b63f8 YL |
223 | int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, |
224 | unsigned long *end_pfn); | |
0ee332c1 TH |
225 | void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, |
226 | unsigned long *out_end_pfn, int *out_nid); | |
227 | ||
228 | /** | |
229 | * for_each_mem_pfn_range - early memory pfn range iterator | |
230 | * @i: an integer used as loop variable | |
231 | * @nid: node selector, %MAX_NUMNODES for all nodes | |
232 | * @p_start: ptr to ulong for start pfn of the range, can be %NULL | |
233 | * @p_end: ptr to ulong for end pfn of the range, can be %NULL | |
234 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
235 | * | |
f2d52fe5 | 236 | * Walks over configured memory ranges. |
0ee332c1 TH |
237 | */ |
238 | #define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \ | |
239 | for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \ | |
240 | i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid)) | |
241 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
242 | ||
35fd0808 TH |
243 | /** |
244 | * for_each_free_mem_range - iterate through free memblock areas | |
245 | * @i: u64 used as loop variable | |
b1154233 | 246 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 247 | * @flags: pick from blocks based on memory attributes |
35fd0808 TH |
248 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
249 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
250 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
251 | * | |
252 | * Walks over free (memory && !reserved) areas of memblock. Available as | |
253 | * soon as memblock is initialized. | |
254 | */ | |
fc6daaf9 | 255 | #define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \ |
f1af9d3a | 256 | for_each_mem_range(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 257 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 TH |
258 | |
259 | /** | |
260 | * for_each_free_mem_range_reverse - rev-iterate through free memblock areas | |
261 | * @i: u64 used as loop variable | |
b1154233 | 262 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 263 | * @flags: pick from blocks based on memory attributes |
7bd0b0f0 TH |
264 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
265 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
266 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
267 | * | |
268 | * Walks over free (memory && !reserved) areas of memblock in reverse | |
269 | * order. Available as soon as memblock is initialized. | |
270 | */ | |
fc6daaf9 TL |
271 | #define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \ |
272 | p_nid) \ | |
f1af9d3a | 273 | for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \ |
fc6daaf9 | 274 | nid, flags, p_start, p_end, p_nid) |
7bd0b0f0 | 275 | |
7c0caeb8 | 276 | #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
e7e8de59 TC |
277 | int memblock_set_node(phys_addr_t base, phys_addr_t size, |
278 | struct memblock_type *type, int nid); | |
7c0caeb8 TH |
279 | |
280 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
281 | { | |
282 | r->nid = nid; | |
283 | } | |
284 | ||
285 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
286 | { | |
287 | return r->nid; | |
288 | } | |
289 | #else | |
290 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
291 | { | |
292 | } | |
293 | ||
294 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
295 | { | |
296 | return 0; | |
297 | } | |
298 | #endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ | |
299 | ||
57c8a661 MR |
300 | /* Flags for memblock allocation APIs */ |
301 | #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0) | |
302 | #define MEMBLOCK_ALLOC_ACCESSIBLE 0 | |
fed84c78 | 303 | #define MEMBLOCK_ALLOC_KASAN 1 |
57c8a661 MR |
304 | |
305 | /* We are using top down, so it is safe to use 0 here */ | |
306 | #define MEMBLOCK_LOW_LIMIT 0 | |
307 | ||
308 | #ifndef ARCH_LOW_ADDRESS_LIMIT | |
309 | #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL | |
310 | #endif | |
311 | ||
8a770c2a MR |
312 | phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align, |
313 | phys_addr_t start, phys_addr_t end); | |
9a8dd708 | 314 | phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid); |
9d1e2492 | 315 | |
ecc3e771 MR |
316 | static inline phys_addr_t memblock_phys_alloc(phys_addr_t size, |
317 | phys_addr_t align) | |
318 | { | |
319 | return memblock_phys_alloc_range(size, align, 0, | |
320 | MEMBLOCK_ALLOC_ACCESSIBLE); | |
321 | } | |
e63075a3 | 322 | |
57c8a661 MR |
323 | void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align, |
324 | phys_addr_t min_addr, phys_addr_t max_addr, | |
325 | int nid); | |
57c8a661 MR |
326 | void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, |
327 | phys_addr_t min_addr, phys_addr_t max_addr, | |
328 | int nid); | |
329 | ||
330 | static inline void * __init memblock_alloc(phys_addr_t size, phys_addr_t align) | |
331 | { | |
332 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
333 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
334 | } | |
335 | ||
336 | static inline void * __init memblock_alloc_raw(phys_addr_t size, | |
337 | phys_addr_t align) | |
338 | { | |
339 | return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT, | |
340 | MEMBLOCK_ALLOC_ACCESSIBLE, | |
341 | NUMA_NO_NODE); | |
342 | } | |
343 | ||
344 | static inline void * __init memblock_alloc_from(phys_addr_t size, | |
345 | phys_addr_t align, | |
346 | phys_addr_t min_addr) | |
347 | { | |
348 | return memblock_alloc_try_nid(size, align, min_addr, | |
349 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
350 | } | |
351 | ||
57c8a661 MR |
352 | static inline void * __init memblock_alloc_low(phys_addr_t size, |
353 | phys_addr_t align) | |
354 | { | |
355 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
356 | ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE); | |
357 | } | |
57c8a661 MR |
358 | |
359 | static inline void * __init memblock_alloc_node(phys_addr_t size, | |
360 | phys_addr_t align, int nid) | |
361 | { | |
362 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
363 | MEMBLOCK_ALLOC_ACCESSIBLE, nid); | |
364 | } | |
365 | ||
57c8a661 MR |
366 | static inline void __init memblock_free_early(phys_addr_t base, |
367 | phys_addr_t size) | |
368 | { | |
4d72868c | 369 | memblock_free(base, size); |
57c8a661 MR |
370 | } |
371 | ||
372 | static inline void __init memblock_free_early_nid(phys_addr_t base, | |
373 | phys_addr_t size, int nid) | |
374 | { | |
4d72868c | 375 | memblock_free(base, size); |
57c8a661 MR |
376 | } |
377 | ||
378 | static inline void __init memblock_free_late(phys_addr_t base, phys_addr_t size) | |
379 | { | |
380 | __memblock_free_late(base, size); | |
381 | } | |
382 | ||
79442ed1 TC |
383 | /* |
384 | * Set the allocation direction to bottom-up or top-down. | |
385 | */ | |
2cfb3665 | 386 | static inline void __init memblock_set_bottom_up(bool enable) |
79442ed1 TC |
387 | { |
388 | memblock.bottom_up = enable; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Check if the allocation direction is bottom-up or not. | |
393 | * if this is true, that said, memblock will allocate memory | |
394 | * in bottom-up direction. | |
395 | */ | |
396 | static inline bool memblock_bottom_up(void) | |
397 | { | |
398 | return memblock.bottom_up; | |
399 | } | |
79442ed1 | 400 | |
581adcbe | 401 | phys_addr_t memblock_phys_mem_size(void); |
8907de5d | 402 | phys_addr_t memblock_reserved_size(void); |
595ad9af | 403 | phys_addr_t memblock_mem_size(unsigned long limit_pfn); |
581adcbe TH |
404 | phys_addr_t memblock_start_of_DRAM(void); |
405 | phys_addr_t memblock_end_of_DRAM(void); | |
406 | void memblock_enforce_memory_limit(phys_addr_t memory_limit); | |
c9ca9b4e | 407 | void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size); |
a571d4eb | 408 | void memblock_mem_limit_remove_map(phys_addr_t limit); |
b4ad0c7e | 409 | bool memblock_is_memory(phys_addr_t addr); |
937f0c26 YB |
410 | bool memblock_is_map_memory(phys_addr_t addr); |
411 | bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size); | |
b4ad0c7e | 412 | bool memblock_is_reserved(phys_addr_t addr); |
c5c5c9d1 | 413 | bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size); |
581adcbe | 414 | |
4ff7b82f TH |
415 | extern void __memblock_dump_all(void); |
416 | ||
417 | static inline void memblock_dump_all(void) | |
418 | { | |
419 | if (memblock_debug) | |
420 | __memblock_dump_all(); | |
421 | } | |
95f72d1e | 422 | |
e63075a3 BH |
423 | /** |
424 | * memblock_set_current_limit - Set the current allocation limit to allow | |
425 | * limiting allocations to what is currently | |
426 | * accessible during boot | |
427 | * @limit: New limit value (physical address) | |
428 | */ | |
581adcbe | 429 | void memblock_set_current_limit(phys_addr_t limit); |
e63075a3 | 430 | |
35a1f0bd | 431 | |
fec51014 LA |
432 | phys_addr_t memblock_get_current_limit(void); |
433 | ||
5b385f25 BH |
434 | /* |
435 | * pfn conversion functions | |
436 | * | |
437 | * While the memory MEMBLOCKs should always be page aligned, the reserved | |
438 | * MEMBLOCKs may not be. This accessor attempt to provide a very clear | |
439 | * idea of what they return for such non aligned MEMBLOCKs. | |
440 | */ | |
441 | ||
442 | /** | |
47cec443 | 443 | * memblock_region_memory_base_pfn - get the lowest pfn of the memory region |
5b385f25 | 444 | * @reg: memblock_region structure |
47cec443 MR |
445 | * |
446 | * Return: the lowest pfn intersecting with the memory region | |
5b385f25 | 447 | */ |
c7fc2de0 | 448 | static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg) |
5b385f25 | 449 | { |
c7fc2de0 | 450 | return PFN_UP(reg->base); |
5b385f25 BH |
451 | } |
452 | ||
453 | /** | |
47cec443 | 454 | * memblock_region_memory_end_pfn - get the end pfn of the memory region |
5b385f25 | 455 | * @reg: memblock_region structure |
47cec443 MR |
456 | * |
457 | * Return: the end_pfn of the reserved region | |
5b385f25 | 458 | */ |
c7fc2de0 | 459 | static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg) |
5b385f25 | 460 | { |
c7fc2de0 | 461 | return PFN_DOWN(reg->base + reg->size); |
5b385f25 BH |
462 | } |
463 | ||
464 | /** | |
47cec443 | 465 | * memblock_region_reserved_base_pfn - get the lowest pfn of the reserved region |
5b385f25 | 466 | * @reg: memblock_region structure |
47cec443 MR |
467 | * |
468 | * Return: the lowest pfn intersecting with the reserved region | |
5b385f25 | 469 | */ |
c7fc2de0 | 470 | static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg) |
5b385f25 | 471 | { |
c7fc2de0 | 472 | return PFN_DOWN(reg->base); |
5b385f25 BH |
473 | } |
474 | ||
475 | /** | |
47cec443 | 476 | * memblock_region_reserved_end_pfn - get the end pfn of the reserved region |
5b385f25 | 477 | * @reg: memblock_region structure |
47cec443 MR |
478 | * |
479 | * Return: the end_pfn of the reserved region | |
5b385f25 | 480 | */ |
c7fc2de0 | 481 | static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg) |
5b385f25 | 482 | { |
c7fc2de0 | 483 | return PFN_UP(reg->base + reg->size); |
5b385f25 BH |
484 | } |
485 | ||
486 | #define for_each_memblock(memblock_type, region) \ | |
ba6c19fd | 487 | for (region = memblock.memblock_type.regions; \ |
5b385f25 BH |
488 | region < (memblock.memblock_type.regions + memblock.memblock_type.cnt); \ |
489 | region++) | |
490 | ||
66e8b438 GK |
491 | #define for_each_memblock_type(i, memblock_type, rgn) \ |
492 | for (i = 0, rgn = &memblock_type->regions[0]; \ | |
493 | i < memblock_type->cnt; \ | |
494 | i++, rgn = &memblock_type->regions[i]) | |
5b385f25 | 495 | |
57c8a661 MR |
496 | extern void *alloc_large_system_hash(const char *tablename, |
497 | unsigned long bucketsize, | |
498 | unsigned long numentries, | |
499 | int scale, | |
500 | int flags, | |
501 | unsigned int *_hash_shift, | |
502 | unsigned int *_hash_mask, | |
503 | unsigned long low_limit, | |
504 | unsigned long high_limit); | |
505 | ||
506 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ | |
507 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min | |
508 | * shift passed via *_hash_shift */ | |
509 | #define HASH_ZERO 0x00000004 /* Zero allocated hash table */ | |
510 | ||
511 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have | |
512 | * sufficient vmalloc space. | |
513 | */ | |
514 | #ifdef CONFIG_NUMA | |
515 | #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) | |
516 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ | |
517 | #else | |
518 | #define hashdist (0) | |
519 | #endif | |
520 | ||
4a20799d | 521 | #ifdef CONFIG_MEMTEST |
7f70baee | 522 | extern void early_memtest(phys_addr_t start, phys_addr_t end); |
4a20799d | 523 | #else |
7f70baee | 524 | static inline void early_memtest(phys_addr_t start, phys_addr_t end) |
4a20799d VM |
525 | { |
526 | } | |
527 | #endif | |
f0b37fad | 528 | |
95f72d1e YL |
529 | #endif /* __KERNEL__ */ |
530 | ||
531 | #endif /* _LINUX_MEMBLOCK_H */ |