Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /* |
3 | * Discontiguous memory support, Kanoj Sarcar, SGI, Nov 1999 | |
4 | */ | |
5 | #ifndef _LINUX_BOOTMEM_H | |
6 | #define _LINUX_BOOTMEM_H | |
7 | ||
1da177e4 | 8 | #include <linux/mmzone.h> |
26f09e9b | 9 | #include <linux/mm_types.h> |
e786e86a | 10 | #include <asm/dma.h> |
2382705f | 11 | #include <asm/processor.h> |
1da177e4 LT |
12 | |
13 | /* | |
14 | * simple boot-time physical memory area allocator. | |
15 | */ | |
16 | ||
17 | extern unsigned long max_low_pfn; | |
18 | extern unsigned long min_low_pfn; | |
19 | ||
20 | /* | |
21 | * highest page | |
22 | */ | |
23 | extern unsigned long max_pfn; | |
8dd33030 IM |
24 | /* |
25 | * highest possible page | |
26 | */ | |
27 | extern unsigned long long max_possible_pfn; | |
1da177e4 | 28 | |
223e8dc9 | 29 | extern unsigned long free_all_bootmem(void); |
f784a3f1 | 30 | extern void reset_node_managed_pages(pg_data_t *pgdat); |
7b4b2a0d | 31 | extern void reset_all_zones_managed_pages(void); |
223e8dc9 JW |
32 | |
33 | extern void free_bootmem_node(pg_data_t *pgdat, | |
34 | unsigned long addr, | |
35 | unsigned long size); | |
81df9bff JK |
36 | extern void free_bootmem(unsigned long physaddr, unsigned long size); |
37 | extern void free_bootmem_late(unsigned long physaddr, unsigned long size); | |
223e8dc9 | 38 | |
2d0aae41 | 39 | extern void *__alloc_bootmem(unsigned long size, |
f71bf0ca FBH |
40 | unsigned long align, |
41 | unsigned long goal); | |
2d0aae41 | 42 | extern void *__alloc_bootmem_nopanic(unsigned long size, |
f71bf0ca | 43 | unsigned long align, |
48a27055 | 44 | unsigned long goal) __malloc; |
223e8dc9 JW |
45 | extern void *__alloc_bootmem_node(pg_data_t *pgdat, |
46 | unsigned long size, | |
47 | unsigned long align, | |
48a27055 | 48 | unsigned long goal) __malloc; |
08677214 YL |
49 | void *__alloc_bootmem_node_high(pg_data_t *pgdat, |
50 | unsigned long size, | |
51 | unsigned long align, | |
48a27055 | 52 | unsigned long goal) __malloc; |
223e8dc9 JW |
53 | extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
54 | unsigned long size, | |
55 | unsigned long align, | |
48a27055 | 56 | unsigned long goal) __malloc; |
99ab7b19 YL |
57 | void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, |
58 | unsigned long size, | |
59 | unsigned long align, | |
60 | unsigned long goal, | |
48a27055 | 61 | unsigned long limit) __malloc; |
2d0aae41 TH |
62 | extern void *__alloc_bootmem_low(unsigned long size, |
63 | unsigned long align, | |
48a27055 | 64 | unsigned long goal) __malloc; |
c1329375 | 65 | |
8bba154e YL |
66 | /* We are using top down, so it is safe to use 0 here */ |
67 | #define BOOTMEM_LOW_LIMIT 0 | |
8bba154e | 68 | |
2382705f | 69 | #ifndef ARCH_LOW_ADDRESS_LIMIT |
70 | #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL | |
71 | #endif | |
72 | ||
1da177e4 | 73 | #define alloc_bootmem(x) \ |
8bba154e | 74 | __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
53dde5f3 | 75 | #define alloc_bootmem_align(x, align) \ |
8bba154e | 76 | __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) |
1da177e4 | 77 | #define alloc_bootmem_pages(x) \ |
8bba154e | 78 | __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
74768ed8 | 79 | #define alloc_bootmem_pages_nopanic(x) \ |
8bba154e | 80 | __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
1da177e4 | 81 | #define alloc_bootmem_node(pgdat, x) \ |
8bba154e | 82 | __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
8f389a99 | 83 | #define alloc_bootmem_node_nopanic(pgdat, x) \ |
8bba154e | 84 | __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) |
1da177e4 | 85 | #define alloc_bootmem_pages_node(pgdat, x) \ |
8bba154e | 86 | __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) |
2d0aae41 TH |
87 | |
88 | #define alloc_bootmem_low(x) \ | |
89 | __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) | |
90 | #define alloc_bootmem_low_pages(x) \ | |
91 | __alloc_bootmem_low(x, PAGE_SIZE, 0) | |
c6af5e9f | 92 | |
26f09e9b SS |
93 | /* FIXME: use MEMBLOCK_ALLOC_* variants here */ |
94 | #define BOOTMEM_ALLOC_ACCESSIBLE 0 | |
95 | #define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0) | |
96 | ||
97 | /* FIXME: Move to memblock.h at a point where we remove nobootmem.c */ | |
eb31d559 | 98 | void *memblock_alloc_try_nid_raw(phys_addr_t size, phys_addr_t align, |
ea1f5f37 PT |
99 | phys_addr_t min_addr, |
100 | phys_addr_t max_addr, int nid); | |
eb31d559 | 101 | void *memblock_alloc_try_nid_nopanic(phys_addr_t size, |
26f09e9b SS |
102 | phys_addr_t align, phys_addr_t min_addr, |
103 | phys_addr_t max_addr, int nid); | |
eb31d559 | 104 | void *memblock_alloc_try_nid(phys_addr_t size, phys_addr_t align, |
26f09e9b SS |
105 | phys_addr_t min_addr, phys_addr_t max_addr, int nid); |
106 | void __memblock_free_early(phys_addr_t base, phys_addr_t size); | |
107 | void __memblock_free_late(phys_addr_t base, phys_addr_t size); | |
108 | ||
eb31d559 | 109 | static inline void * __init memblock_alloc( |
26f09e9b SS |
110 | phys_addr_t size, phys_addr_t align) |
111 | { | |
eb31d559 | 112 | return memblock_alloc_try_nid(size, align, BOOTMEM_LOW_LIMIT, |
26f09e9b SS |
113 | BOOTMEM_ALLOC_ACCESSIBLE, |
114 | NUMA_NO_NODE); | |
115 | } | |
116 | ||
eb31d559 | 117 | static inline void * __init memblock_alloc_raw( |
ea1f5f37 PT |
118 | phys_addr_t size, phys_addr_t align) |
119 | { | |
eb31d559 | 120 | return memblock_alloc_try_nid_raw(size, align, BOOTMEM_LOW_LIMIT, |
ea1f5f37 PT |
121 | BOOTMEM_ALLOC_ACCESSIBLE, |
122 | NUMA_NO_NODE); | |
123 | } | |
124 | ||
eb31d559 | 125 | static inline void * __init memblock_alloc_nopanic( |
26f09e9b SS |
126 | phys_addr_t size, phys_addr_t align) |
127 | { | |
eb31d559 | 128 | return memblock_alloc_try_nid_nopanic(size, align, |
26f09e9b SS |
129 | BOOTMEM_LOW_LIMIT, |
130 | BOOTMEM_ALLOC_ACCESSIBLE, | |
131 | NUMA_NO_NODE); | |
132 | } | |
133 | ||
eb31d559 | 134 | static inline void * __init memblock_alloc_low( |
ad6492b8 YL |
135 | phys_addr_t size, phys_addr_t align) |
136 | { | |
eb31d559 | 137 | return memblock_alloc_try_nid(size, align, |
ad6492b8 YL |
138 | BOOTMEM_LOW_LIMIT, |
139 | ARCH_LOW_ADDRESS_LIMIT, | |
140 | NUMA_NO_NODE); | |
141 | } | |
eb31d559 | 142 | static inline void * __init memblock_alloc_low_nopanic( |
ad6492b8 YL |
143 | phys_addr_t size, phys_addr_t align) |
144 | { | |
eb31d559 | 145 | return memblock_alloc_try_nid_nopanic(size, align, |
ad6492b8 YL |
146 | BOOTMEM_LOW_LIMIT, |
147 | ARCH_LOW_ADDRESS_LIMIT, | |
148 | NUMA_NO_NODE); | |
149 | } | |
150 | ||
eb31d559 | 151 | static inline void * __init memblock_alloc_from_nopanic( |
26f09e9b SS |
152 | phys_addr_t size, phys_addr_t align, phys_addr_t min_addr) |
153 | { | |
eb31d559 | 154 | return memblock_alloc_try_nid_nopanic(size, align, min_addr, |
26f09e9b SS |
155 | BOOTMEM_ALLOC_ACCESSIBLE, |
156 | NUMA_NO_NODE); | |
157 | } | |
158 | ||
eb31d559 | 159 | static inline void * __init memblock_alloc_node( |
26f09e9b SS |
160 | phys_addr_t size, int nid) |
161 | { | |
eb31d559 | 162 | return memblock_alloc_try_nid(size, 0, BOOTMEM_LOW_LIMIT, |
26f09e9b SS |
163 | BOOTMEM_ALLOC_ACCESSIBLE, nid); |
164 | } | |
165 | ||
eb31d559 | 166 | static inline void * __init memblock_alloc_node_nopanic( |
26f09e9b SS |
167 | phys_addr_t size, int nid) |
168 | { | |
eb31d559 | 169 | return memblock_alloc_try_nid_nopanic(size, 0, BOOTMEM_LOW_LIMIT, |
26f09e9b SS |
170 | BOOTMEM_ALLOC_ACCESSIBLE, |
171 | nid); | |
172 | } | |
173 | ||
174 | static inline void __init memblock_free_early( | |
175 | phys_addr_t base, phys_addr_t size) | |
176 | { | |
177 | __memblock_free_early(base, size); | |
178 | } | |
179 | ||
180 | static inline void __init memblock_free_early_nid( | |
181 | phys_addr_t base, phys_addr_t size, int nid) | |
182 | { | |
183 | __memblock_free_early(base, size); | |
184 | } | |
185 | ||
186 | static inline void __init memblock_free_late( | |
187 | phys_addr_t base, phys_addr_t size) | |
188 | { | |
189 | __memblock_free_late(base, size); | |
190 | } | |
191 | ||
f71bf0ca FBH |
192 | extern void *alloc_large_system_hash(const char *tablename, |
193 | unsigned long bucketsize, | |
194 | unsigned long numentries, | |
195 | int scale, | |
196 | int flags, | |
197 | unsigned int *_hash_shift, | |
198 | unsigned int *_hash_mask, | |
31fe62b9 TB |
199 | unsigned long low_limit, |
200 | unsigned long high_limit); | |
1da177e4 | 201 | |
04903664 | 202 | #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ |
2c85f51d JB |
203 | #define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min |
204 | * shift passed via *_hash_shift */ | |
3749a8f0 | 205 | #define HASH_ZERO 0x00000004 /* Zero allocated hash table */ |
1da177e4 | 206 | |
c2fdf3a9 AB |
207 | /* Only NUMA needs hash distribution. 64bit NUMA architectures have |
208 | * sufficient vmalloc space. | |
1da177e4 | 209 | */ |
a9919c79 RV |
210 | #ifdef CONFIG_NUMA |
211 | #define HASHDIST_DEFAULT IS_ENABLED(CONFIG_64BIT) | |
212 | extern int hashdist; /* Distribute hashes across NUMA nodes? */ | |
1da177e4 | 213 | #else |
a9919c79 | 214 | #define hashdist (0) |
1da177e4 | 215 | #endif |
1da177e4 LT |
216 | |
217 | ||
218 | #endif /* _LINUX_BOOTMEM_H */ |