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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
95f72d1e YL |
2 | #ifndef _LINUX_MEMBLOCK_H |
3 | #define _LINUX_MEMBLOCK_H | |
4 | #ifdef __KERNEL__ | |
5 | ||
6 | /* | |
7 | * Logical memory blocks. | |
8 | * | |
9 | * Copyright (C) 2001 Peter Bergner, IBM Corp. | |
95f72d1e YL |
10 | */ |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/mm.h> | |
57c8a661 MR |
14 | #include <asm/dma.h> |
15 | ||
16 | extern unsigned long max_low_pfn; | |
17 | extern unsigned long min_low_pfn; | |
18 | ||
19 | /* | |
20 | * highest page | |
21 | */ | |
22 | extern unsigned long max_pfn; | |
23 | /* | |
24 | * highest possible page | |
25 | */ | |
26 | extern unsigned long long max_possible_pfn; | |
95f72d1e | 27 | |
9a0de1bf MR |
28 | /** |
29 | * enum memblock_flags - definition of memory region attributes | |
30 | * @MEMBLOCK_NONE: no special request | |
e14b4155 DH |
31 | * @MEMBLOCK_HOTPLUG: memory region indicated in the firmware-provided memory |
32 | * map during early boot as hot(un)pluggable system RAM (e.g., memory range | |
33 | * that might get hotunplugged later). With "movable_node" set on the kernel | |
34 | * commandline, try keeping this memory region hotunpluggable. Does not apply | |
35 | * to memblocks added ("hotplugged") after early boot. | |
9a0de1bf | 36 | * @MEMBLOCK_MIRROR: mirrored region |
9092d4f7 MR |
37 | * @MEMBLOCK_NOMAP: don't add to kernel direct mapping and treat as |
38 | * reserved in the memory map; refer to memblock_mark_nomap() description | |
39 | * for further details | |
f7892d8e DH |
40 | * @MEMBLOCK_DRIVER_MANAGED: memory region that is always detected and added |
41 | * via a driver, and never indicated in the firmware-provided memory map as | |
42 | * system RAM. This corresponds to IORESOURCE_SYSRAM_DRIVER_MANAGED in the | |
43 | * kernel resource tree. | |
9a0de1bf | 44 | */ |
e1720fee | 45 | enum memblock_flags { |
fc6daaf9 TL |
46 | MEMBLOCK_NONE = 0x0, /* No special request */ |
47 | MEMBLOCK_HOTPLUG = 0x1, /* hotpluggable region */ | |
a3f5bafc | 48 | MEMBLOCK_MIRROR = 0x2, /* mirrored region */ |
bf3d3cc5 | 49 | MEMBLOCK_NOMAP = 0x4, /* don't add to kernel direct mapping */ |
f7892d8e | 50 | MEMBLOCK_DRIVER_MANAGED = 0x8, /* always detected via a driver */ |
fc6daaf9 | 51 | }; |
66b16edf | 52 | |
9a0de1bf MR |
53 | /** |
54 | * struct memblock_region - represents a memory region | |
8cbd54f5 | 55 | * @base: base address of the region |
9a0de1bf MR |
56 | * @size: size of the region |
57 | * @flags: memory region attributes | |
58 | * @nid: NUMA node id | |
59 | */ | |
e3239ff9 | 60 | struct memblock_region { |
2898cc4c BH |
61 | phys_addr_t base; |
62 | phys_addr_t size; | |
e1720fee | 63 | enum memblock_flags flags; |
a9ee6cf5 | 64 | #ifdef CONFIG_NUMA |
7c0caeb8 TH |
65 | int nid; |
66 | #endif | |
95f72d1e YL |
67 | }; |
68 | ||
9a0de1bf MR |
69 | /** |
70 | * struct memblock_type - collection of memory regions of certain type | |
71 | * @cnt: number of regions | |
72 | * @max: size of the allocated array | |
73 | * @total_size: size of all regions | |
74 | * @regions: array of regions | |
75 | * @name: the memory type symbolic name | |
76 | */ | |
e3239ff9 | 77 | struct memblock_type { |
9a0de1bf MR |
78 | unsigned long cnt; |
79 | unsigned long max; | |
80 | phys_addr_t total_size; | |
bf23c51f | 81 | struct memblock_region *regions; |
0262d9c8 | 82 | char *name; |
95f72d1e YL |
83 | }; |
84 | ||
9a0de1bf MR |
85 | /** |
86 | * struct memblock - memblock allocator metadata | |
87 | * @bottom_up: is bottom up direction? | |
88 | * @current_limit: physical address of the current allocation limit | |
8cbd54f5 | 89 | * @memory: usable memory regions |
9a0de1bf | 90 | * @reserved: reserved memory regions |
9a0de1bf | 91 | */ |
95f72d1e | 92 | struct memblock { |
79442ed1 | 93 | bool bottom_up; /* is bottom up direction? */ |
2898cc4c | 94 | phys_addr_t current_limit; |
e3239ff9 BH |
95 | struct memblock_type memory; |
96 | struct memblock_type reserved; | |
95f72d1e YL |
97 | }; |
98 | ||
99 | extern struct memblock memblock; | |
5e63cf43 | 100 | |
350e88ba | 101 | #ifndef CONFIG_ARCH_KEEP_MEMBLOCK |
036fbb21 KS |
102 | #define __init_memblock __meminit |
103 | #define __initdata_memblock __meminitdata | |
3010f876 | 104 | void memblock_discard(void); |
036fbb21 KS |
105 | #else |
106 | #define __init_memblock | |
107 | #define __initdata_memblock | |
350e88ba | 108 | static inline void memblock_discard(void) {} |
036fbb21 KS |
109 | #endif |
110 | ||
1aadc056 | 111 | void memblock_allow_resize(void); |
952eea9b DH |
112 | int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid, |
113 | enum memblock_flags flags); | |
581adcbe TH |
114 | int memblock_add(phys_addr_t base, phys_addr_t size); |
115 | int memblock_remove(phys_addr_t base, phys_addr_t size); | |
3ecc6834 | 116 | int memblock_phys_free(phys_addr_t base, phys_addr_t size); |
581adcbe | 117 | int memblock_reserve(phys_addr_t base, phys_addr_t size); |
02634a44 AK |
118 | #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
119 | int memblock_physmem_add(phys_addr_t base, phys_addr_t size); | |
120 | #endif | |
6ede1fd3 | 121 | void memblock_trim_memory(phys_addr_t align); |
95cf82ec TC |
122 | bool memblock_overlaps_region(struct memblock_type *type, |
123 | phys_addr_t base, phys_addr_t size); | |
66b16edf TC |
124 | int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); |
125 | int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); | |
a3f5bafc | 126 | int memblock_mark_mirror(phys_addr_t base, phys_addr_t size); |
bf3d3cc5 | 127 | int memblock_mark_nomap(phys_addr_t base, phys_addr_t size); |
4c546b8a | 128 | int memblock_clear_nomap(phys_addr_t base, phys_addr_t size); |
f1af9d3a | 129 | |
097d43d8 | 130 | void memblock_free_all(void); |
4421cca0 | 131 | void memblock_free(void *ptr, size_t size); |
57c8a661 MR |
132 | void reset_node_managed_pages(pg_data_t *pgdat); |
133 | void reset_all_zones_managed_pages(void); | |
134 | ||
f1af9d3a | 135 | /* Low level functions */ |
e1720fee | 136 | void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 137 | struct memblock_type *type_a, |
f1af9d3a PH |
138 | struct memblock_type *type_b, phys_addr_t *out_start, |
139 | phys_addr_t *out_end, int *out_nid); | |
140 | ||
e1720fee | 141 | void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags, |
fc6daaf9 | 142 | struct memblock_type *type_a, |
f1af9d3a PH |
143 | struct memblock_type *type_b, phys_addr_t *out_start, |
144 | phys_addr_t *out_end, int *out_nid); | |
145 | ||
621d9739 | 146 | void memblock_free_late(phys_addr_t base, phys_addr_t size); |
3010f876 | 147 | |
77649905 DH |
148 | #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP |
149 | static inline void __next_physmem_range(u64 *idx, struct memblock_type *type, | |
150 | phys_addr_t *out_start, | |
151 | phys_addr_t *out_end) | |
152 | { | |
153 | extern struct memblock_type physmem; | |
154 | ||
155 | __next_mem_range(idx, NUMA_NO_NODE, MEMBLOCK_NONE, &physmem, type, | |
156 | out_start, out_end, NULL); | |
157 | } | |
158 | ||
159 | /** | |
160 | * for_each_physmem_range - iterate through physmem areas not included in type. | |
161 | * @i: u64 used as loop variable | |
162 | * @type: ptr to memblock_type which excludes from the iteration, can be %NULL | |
163 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
164 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
165 | */ | |
166 | #define for_each_physmem_range(i, type, p_start, p_end) \ | |
167 | for (i = 0, __next_physmem_range(&i, type, p_start, p_end); \ | |
168 | i != (u64)ULLONG_MAX; \ | |
169 | __next_physmem_range(&i, type, p_start, p_end)) | |
170 | #endif /* CONFIG_HAVE_MEMBLOCK_PHYS_MAP */ | |
171 | ||
f1af9d3a | 172 | /** |
6e245ad4 | 173 | * __for_each_mem_range - iterate through memblock areas from type_a and not |
f1af9d3a PH |
174 | * 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 | */ | |
6e245ad4 | 184 | #define __for_each_mem_range(i, type_a, type_b, nid, flags, \ |
f1af9d3a | 185 | p_start, p_end, p_nid) \ |
fc6daaf9 | 186 | for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
187 | p_start, p_end, p_nid); \ |
188 | i != (u64)ULLONG_MAX; \ | |
fc6daaf9 | 189 | __next_mem_range(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
190 | p_start, p_end, p_nid)) |
191 | ||
192 | /** | |
6e245ad4 | 193 | * __for_each_mem_range_rev - reverse iterate through memblock areas from |
f1af9d3a PH |
194 | * type_a and not included in type_b. Or just type_a if type_b is NULL. |
195 | * @i: u64 used as loop variable | |
196 | * @type_a: ptr to memblock_type to iterate | |
197 | * @type_b: ptr to memblock_type which excludes from the iteration | |
198 | * @nid: node selector, %NUMA_NO_NODE for all nodes | |
fc6daaf9 | 199 | * @flags: pick from blocks based on memory attributes |
f1af9d3a PH |
200 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
201 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
202 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
203 | */ | |
6e245ad4 MR |
204 | #define __for_each_mem_range_rev(i, type_a, type_b, nid, flags, \ |
205 | p_start, p_end, p_nid) \ | |
f1af9d3a | 206 | for (i = (u64)ULLONG_MAX, \ |
6e245ad4 | 207 | __next_mem_range_rev(&i, nid, flags, type_a, type_b, \ |
ba6c19fd | 208 | p_start, p_end, p_nid); \ |
f1af9d3a | 209 | i != (u64)ULLONG_MAX; \ |
fc6daaf9 | 210 | __next_mem_range_rev(&i, nid, flags, type_a, type_b, \ |
f1af9d3a PH |
211 | p_start, p_end, p_nid)) |
212 | ||
6e245ad4 MR |
213 | /** |
214 | * for_each_mem_range - iterate through memory areas. | |
215 | * @i: u64 used as loop variable | |
216 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
217 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
218 | */ | |
219 | #define for_each_mem_range(i, p_start, p_end) \ | |
220 | __for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \ | |
f7892d8e DH |
221 | MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED, \ |
222 | p_start, p_end, NULL) | |
6e245ad4 MR |
223 | |
224 | /** | |
225 | * for_each_mem_range_rev - reverse iterate through memblock areas from | |
226 | * type_a and not included in type_b. Or just type_a if type_b is NULL. | |
227 | * @i: u64 used as loop variable | |
228 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
229 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
230 | */ | |
231 | #define for_each_mem_range_rev(i, p_start, p_end) \ | |
232 | __for_each_mem_range_rev(i, &memblock.memory, NULL, NUMA_NO_NODE, \ | |
f7892d8e DH |
233 | MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED,\ |
234 | p_start, p_end, NULL) | |
6e245ad4 | 235 | |
8e7a7f86 | 236 | /** |
9f3d5eaa | 237 | * for_each_reserved_mem_range - iterate over all reserved memblock areas |
8e7a7f86 RH |
238 | * @i: u64 used as loop variable |
239 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
240 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
241 | * | |
242 | * Walks over reserved areas of memblock. Available as soon as memblock | |
243 | * is initialized. | |
244 | */ | |
9f3d5eaa MR |
245 | #define for_each_reserved_mem_range(i, p_start, p_end) \ |
246 | __for_each_mem_range(i, &memblock.reserved, NULL, NUMA_NO_NODE, \ | |
247 | MEMBLOCK_NONE, p_start, p_end, NULL) | |
8e7a7f86 | 248 | |
55ac590c TC |
249 | static inline bool memblock_is_hotpluggable(struct memblock_region *m) |
250 | { | |
251 | return m->flags & MEMBLOCK_HOTPLUG; | |
252 | } | |
253 | ||
a3f5bafc TL |
254 | static inline bool memblock_is_mirror(struct memblock_region *m) |
255 | { | |
256 | return m->flags & MEMBLOCK_MIRROR; | |
257 | } | |
258 | ||
bf3d3cc5 AB |
259 | static inline bool memblock_is_nomap(struct memblock_region *m) |
260 | { | |
261 | return m->flags & MEMBLOCK_NOMAP; | |
262 | } | |
263 | ||
f7892d8e DH |
264 | static inline bool memblock_is_driver_managed(struct memblock_region *m) |
265 | { | |
266 | return m->flags & MEMBLOCK_DRIVER_MANAGED; | |
267 | } | |
268 | ||
e76b63f8 YL |
269 | int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, |
270 | unsigned long *end_pfn); | |
0ee332c1 TH |
271 | void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn, |
272 | unsigned long *out_end_pfn, int *out_nid); | |
273 | ||
274 | /** | |
275 | * for_each_mem_pfn_range - early memory pfn range iterator | |
276 | * @i: an integer used as loop variable | |
277 | * @nid: node selector, %MAX_NUMNODES for all nodes | |
278 | * @p_start: ptr to ulong for start pfn of the range, can be %NULL | |
279 | * @p_end: ptr to ulong for end pfn of the range, can be %NULL | |
280 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
281 | * | |
f2d52fe5 | 282 | * Walks over configured memory ranges. |
0ee332c1 TH |
283 | */ |
284 | #define for_each_mem_pfn_range(i, nid, p_start, p_end, p_nid) \ | |
285 | for (i = -1, __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid); \ | |
286 | i >= 0; __next_mem_pfn_range(&i, nid, p_start, p_end, p_nid)) | |
0ee332c1 | 287 | |
837566e7 AD |
288 | #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT |
289 | void __next_mem_pfn_range_in_zone(u64 *idx, struct zone *zone, | |
290 | unsigned long *out_spfn, | |
291 | unsigned long *out_epfn); | |
292 | /** | |
909782ad | 293 | * for_each_free_mem_pfn_range_in_zone - iterate through zone specific free |
837566e7 AD |
294 | * memblock areas |
295 | * @i: u64 used as loop variable | |
296 | * @zone: zone in which all of the memory blocks reside | |
297 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
298 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
299 | * | |
300 | * Walks over free (memory && !reserved) areas of memblock in a specific | |
301 | * zone. Available once memblock and an empty zone is initialized. The main | |
302 | * assumption is that the zone start, end, and pgdat have been associated. | |
303 | * This way we can use the zone to determine NUMA node, and if a given part | |
304 | * of the memblock is valid for the zone. | |
305 | */ | |
306 | #define for_each_free_mem_pfn_range_in_zone(i, zone, p_start, p_end) \ | |
307 | for (i = 0, \ | |
308 | __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end); \ | |
309 | i != U64_MAX; \ | |
310 | __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end)) | |
0e56acae AD |
311 | |
312 | /** | |
909782ad | 313 | * for_each_free_mem_pfn_range_in_zone_from - iterate through zone specific |
0e56acae AD |
314 | * free memblock areas from a given point |
315 | * @i: u64 used as loop variable | |
316 | * @zone: zone in which all of the memory blocks reside | |
317 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL | |
318 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
319 | * | |
320 | * Walks over free (memory && !reserved) areas of memblock in a specific | |
321 | * zone, continuing from current position. Available as soon as memblock is | |
322 | * initialized. | |
323 | */ | |
324 | #define for_each_free_mem_pfn_range_in_zone_from(i, zone, p_start, p_end) \ | |
325 | for (; i != U64_MAX; \ | |
326 | __next_mem_pfn_range_in_zone(&i, zone, p_start, p_end)) | |
ecd09650 DJ |
327 | |
328 | int __init deferred_page_init_max_threads(const struct cpumask *node_cpumask); | |
329 | ||
837566e7 AD |
330 | #endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */ |
331 | ||
35fd0808 TH |
332 | /** |
333 | * for_each_free_mem_range - iterate through free memblock areas | |
334 | * @i: u64 used as loop variable | |
b1154233 | 335 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 336 | * @flags: pick from blocks based on memory attributes |
35fd0808 TH |
337 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
338 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
339 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
340 | * | |
341 | * Walks over free (memory && !reserved) areas of memblock. Available as | |
342 | * soon as memblock is initialized. | |
343 | */ | |
fc6daaf9 | 344 | #define for_each_free_mem_range(i, nid, flags, p_start, p_end, p_nid) \ |
6e245ad4 MR |
345 | __for_each_mem_range(i, &memblock.memory, &memblock.reserved, \ |
346 | nid, flags, p_start, p_end, p_nid) | |
7bd0b0f0 TH |
347 | |
348 | /** | |
349 | * for_each_free_mem_range_reverse - rev-iterate through free memblock areas | |
350 | * @i: u64 used as loop variable | |
b1154233 | 351 | * @nid: node selector, %NUMA_NO_NODE for all nodes |
d30b5545 | 352 | * @flags: pick from blocks based on memory attributes |
7bd0b0f0 TH |
353 | * @p_start: ptr to phys_addr_t for start address of the range, can be %NULL |
354 | * @p_end: ptr to phys_addr_t for end address of the range, can be %NULL | |
355 | * @p_nid: ptr to int for nid of the range, can be %NULL | |
356 | * | |
357 | * Walks over free (memory && !reserved) areas of memblock in reverse | |
358 | * order. Available as soon as memblock is initialized. | |
359 | */ | |
fc6daaf9 TL |
360 | #define for_each_free_mem_range_reverse(i, nid, flags, p_start, p_end, \ |
361 | p_nid) \ | |
6e245ad4 MR |
362 | __for_each_mem_range_rev(i, &memblock.memory, &memblock.reserved, \ |
363 | nid, flags, p_start, p_end, p_nid) | |
7bd0b0f0 | 364 | |
e7e8de59 TC |
365 | int memblock_set_node(phys_addr_t base, phys_addr_t size, |
366 | struct memblock_type *type, int nid); | |
7c0caeb8 | 367 | |
a9ee6cf5 | 368 | #ifdef CONFIG_NUMA |
7c0caeb8 TH |
369 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) |
370 | { | |
371 | r->nid = nid; | |
372 | } | |
373 | ||
374 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
375 | { | |
376 | return r->nid; | |
377 | } | |
378 | #else | |
379 | static inline void memblock_set_region_node(struct memblock_region *r, int nid) | |
380 | { | |
381 | } | |
382 | ||
383 | static inline int memblock_get_region_node(const struct memblock_region *r) | |
384 | { | |
385 | return 0; | |
386 | } | |
a9ee6cf5 | 387 | #endif /* CONFIG_NUMA */ |
7c0caeb8 | 388 | |
57c8a661 MR |
389 | /* Flags for memblock allocation APIs */ |
390 | #define MEMBLOCK_ALLOC_ANYWHERE (~(phys_addr_t)0) | |
391 | #define MEMBLOCK_ALLOC_ACCESSIBLE 0 | |
c6975d7c | 392 | #define MEMBLOCK_ALLOC_NOLEAKTRACE 1 |
57c8a661 MR |
393 | |
394 | /* We are using top down, so it is safe to use 0 here */ | |
395 | #define MEMBLOCK_LOW_LIMIT 0 | |
396 | ||
397 | #ifndef ARCH_LOW_ADDRESS_LIMIT | |
398 | #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL | |
399 | #endif | |
400 | ||
8a770c2a MR |
401 | phys_addr_t memblock_phys_alloc_range(phys_addr_t size, phys_addr_t align, |
402 | phys_addr_t start, phys_addr_t end); | |
8676af1f AB |
403 | phys_addr_t memblock_alloc_range_nid(phys_addr_t size, |
404 | phys_addr_t align, phys_addr_t start, | |
405 | phys_addr_t end, int nid, bool exact_nid); | |
9a8dd708 | 406 | phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid); |
9d1e2492 | 407 | |
ecc3e771 MR |
408 | static inline phys_addr_t memblock_phys_alloc(phys_addr_t size, |
409 | phys_addr_t align) | |
410 | { | |
411 | return memblock_phys_alloc_range(size, align, 0, | |
412 | MEMBLOCK_ALLOC_ACCESSIBLE); | |
413 | } | |
e63075a3 | 414 | |
0ac398b1 YY |
415 | void *memblock_alloc_exact_nid_raw(phys_addr_t size, phys_addr_t align, |
416 | phys_addr_t min_addr, phys_addr_t max_addr, | |
417 | int nid); | |
57c8a661 MR |
418 | void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align, |
419 | phys_addr_t min_addr, phys_addr_t max_addr, | |
420 | int nid); | |
57c8a661 MR |
421 | void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, |
422 | phys_addr_t min_addr, phys_addr_t max_addr, | |
423 | int nid); | |
424 | ||
5bdba520 | 425 | static __always_inline void *memblock_alloc(phys_addr_t size, phys_addr_t align) |
57c8a661 MR |
426 | { |
427 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
428 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
429 | } | |
430 | ||
5bdba520 | 431 | static inline void *memblock_alloc_raw(phys_addr_t size, |
57c8a661 MR |
432 | phys_addr_t align) |
433 | { | |
434 | return memblock_alloc_try_nid_raw(size, align, MEMBLOCK_LOW_LIMIT, | |
435 | MEMBLOCK_ALLOC_ACCESSIBLE, | |
436 | NUMA_NO_NODE); | |
437 | } | |
438 | ||
5bdba520 | 439 | static inline void *memblock_alloc_from(phys_addr_t size, |
57c8a661 MR |
440 | phys_addr_t align, |
441 | phys_addr_t min_addr) | |
442 | { | |
443 | return memblock_alloc_try_nid(size, align, min_addr, | |
444 | MEMBLOCK_ALLOC_ACCESSIBLE, NUMA_NO_NODE); | |
445 | } | |
446 | ||
5bdba520 | 447 | static inline void *memblock_alloc_low(phys_addr_t size, |
57c8a661 MR |
448 | phys_addr_t align) |
449 | { | |
450 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
451 | ARCH_LOW_ADDRESS_LIMIT, NUMA_NO_NODE); | |
452 | } | |
57c8a661 | 453 | |
5bdba520 | 454 | static inline void *memblock_alloc_node(phys_addr_t size, |
57c8a661 MR |
455 | phys_addr_t align, int nid) |
456 | { | |
457 | return memblock_alloc_try_nid(size, align, MEMBLOCK_LOW_LIMIT, | |
458 | MEMBLOCK_ALLOC_ACCESSIBLE, nid); | |
459 | } | |
460 | ||
79442ed1 TC |
461 | /* |
462 | * Set the allocation direction to bottom-up or top-down. | |
463 | */ | |
a024b7c2 | 464 | static inline __init_memblock void memblock_set_bottom_up(bool enable) |
79442ed1 TC |
465 | { |
466 | memblock.bottom_up = enable; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Check if the allocation direction is bottom-up or not. | |
471 | * if this is true, that said, memblock will allocate memory | |
472 | * in bottom-up direction. | |
473 | */ | |
a024b7c2 | 474 | static inline __init_memblock bool memblock_bottom_up(void) |
79442ed1 TC |
475 | { |
476 | return memblock.bottom_up; | |
477 | } | |
79442ed1 | 478 | |
581adcbe | 479 | phys_addr_t memblock_phys_mem_size(void); |
8907de5d | 480 | phys_addr_t memblock_reserved_size(void); |
581adcbe TH |
481 | phys_addr_t memblock_start_of_DRAM(void); |
482 | phys_addr_t memblock_end_of_DRAM(void); | |
483 | void memblock_enforce_memory_limit(phys_addr_t memory_limit); | |
c9ca9b4e | 484 | void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size); |
a571d4eb | 485 | void memblock_mem_limit_remove_map(phys_addr_t limit); |
b4ad0c7e | 486 | bool memblock_is_memory(phys_addr_t addr); |
937f0c26 YB |
487 | bool memblock_is_map_memory(phys_addr_t addr); |
488 | bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size); | |
b4ad0c7e | 489 | bool memblock_is_reserved(phys_addr_t addr); |
c5c5c9d1 | 490 | bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size); |
581adcbe | 491 | |
87c55870 | 492 | void memblock_dump_all(void); |
95f72d1e | 493 | |
e63075a3 BH |
494 | /** |
495 | * memblock_set_current_limit - Set the current allocation limit to allow | |
496 | * limiting allocations to what is currently | |
497 | * accessible during boot | |
498 | * @limit: New limit value (physical address) | |
499 | */ | |
581adcbe | 500 | void memblock_set_current_limit(phys_addr_t limit); |
e63075a3 | 501 | |
35a1f0bd | 502 | |
fec51014 LA |
503 | phys_addr_t memblock_get_current_limit(void); |
504 | ||
5b385f25 BH |
505 | /* |
506 | * pfn conversion functions | |
507 | * | |
508 | * While the memory MEMBLOCKs should always be page aligned, the reserved | |
509 | * MEMBLOCKs may not be. This accessor attempt to provide a very clear | |
510 | * idea of what they return for such non aligned MEMBLOCKs. | |
511 | */ | |
512 | ||
513 | /** | |
47cec443 | 514 | * memblock_region_memory_base_pfn - get the lowest pfn of the memory region |
5b385f25 | 515 | * @reg: memblock_region structure |
47cec443 MR |
516 | * |
517 | * Return: the lowest pfn intersecting with the memory region | |
5b385f25 | 518 | */ |
c7fc2de0 | 519 | static inline unsigned long memblock_region_memory_base_pfn(const struct memblock_region *reg) |
5b385f25 | 520 | { |
c7fc2de0 | 521 | return PFN_UP(reg->base); |
5b385f25 BH |
522 | } |
523 | ||
524 | /** | |
47cec443 | 525 | * memblock_region_memory_end_pfn - get the end pfn of the memory region |
5b385f25 | 526 | * @reg: memblock_region structure |
47cec443 MR |
527 | * |
528 | * Return: the end_pfn of the reserved region | |
5b385f25 | 529 | */ |
c7fc2de0 | 530 | static inline unsigned long memblock_region_memory_end_pfn(const struct memblock_region *reg) |
5b385f25 | 531 | { |
c7fc2de0 | 532 | return PFN_DOWN(reg->base + reg->size); |
5b385f25 BH |
533 | } |
534 | ||
535 | /** | |
47cec443 | 536 | * memblock_region_reserved_base_pfn - get the lowest pfn of the reserved region |
5b385f25 | 537 | * @reg: memblock_region structure |
47cec443 MR |
538 | * |
539 | * Return: the lowest pfn intersecting with the reserved region | |
5b385f25 | 540 | */ |
c7fc2de0 | 541 | static inline unsigned long memblock_region_reserved_base_pfn(const struct memblock_region *reg) |
5b385f25 | 542 | { |
c7fc2de0 | 543 | return PFN_DOWN(reg->base); |
5b385f25 BH |
544 | } |
545 | ||
546 | /** | |
47cec443 | 547 | * memblock_region_reserved_end_pfn - get the end pfn of the reserved region |
5b385f25 | 548 | * @reg: memblock_region structure |
47cec443 MR |
549 | * |
550 | * Return: the end_pfn of the reserved region | |
5b385f25 | 551 | */ |
c7fc2de0 | 552 | static inline unsigned long memblock_region_reserved_end_pfn(const struct memblock_region *reg) |
5b385f25 | 553 | { |
c7fc2de0 | 554 | return PFN_UP(reg->base + reg->size); |
5b385f25 BH |
555 | } |
556 | ||
cc6de168 MR |
557 | /** |
558 | * for_each_mem_region - itereate over memory regions | |
559 | * @region: loop variable | |
560 | */ | |
561 | #define for_each_mem_region(region) \ | |
562 | for (region = memblock.memory.regions; \ | |
563 | region < (memblock.memory.regions + memblock.memory.cnt); \ | |
564 | region++) | |
565 | ||
566 | /** | |
567 | * for_each_reserved_mem_region - itereate over reserved memory regions | |
568 | * @region: loop variable | |
569 | */ | |
570 | #define for_each_reserved_mem_region(region) \ | |
571 | for (region = memblock.reserved.regions; \ | |
572 | region < (memblock.reserved.regions + memblock.reserved.cnt); \ | |
5b385f25 BH |
573 | region++) |
574 | ||
57c8a661 MR |
575 | extern void *alloc_large_system_hash(const char *tablename, |
576 | unsigned long bucketsize, | |
577 | unsigned long numentries, | |
578 | int scale, | |
579 | int flags, | |
580 | unsigned int *_hash_shift, | |
581 | unsigned int *_hash_mask, | |
582 | unsigned long low_limit, | |
583 | unsigned long high_limit); | |
584 | ||
585 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ | |
586 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min | |
587 | * shift passed via *_hash_shift */ | |
588 | #define HASH_ZERO 0x00000004 /* Zero allocated hash table */ | |
589 | ||
590 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have | |
591 | * sufficient vmalloc space. | |
592 | */ | |
593 | #ifdef CONFIG_NUMA | |
594 | #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) | |
595 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ | |
596 | #else | |
597 | #define hashdist (0) | |
598 | #endif | |
599 | ||
4a20799d | 600 | #ifdef CONFIG_MEMTEST |
7f70baee | 601 | extern void early_memtest(phys_addr_t start, phys_addr_t end); |
4a20799d | 602 | #else |
7f70baee | 603 | static inline void early_memtest(phys_addr_t start, phys_addr_t end) |
4a20799d VM |
604 | { |
605 | } | |
606 | #endif | |
f0b37fad | 607 | |
95f72d1e YL |
608 | #endif /* __KERNEL__ */ |
609 | ||
610 | #endif /* _LINUX_MEMBLOCK_H */ |