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x86: Only call dma32_reserve_bootmem 64bit !CONFIG_NUMA
[mirror_ubuntu-bionic-kernel.git] / include / linux / bootmem.h
CommitLineData
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>
e786e86a 8#include <asm/dma.h>
1da177e4
LT		 9
10/*
11 * simple boot-time physical memory area allocator.
12 */
13
14extern unsigned long max_low_pfn;
15extern unsigned long min_low_pfn;
16
17/*
18 * highest page
19 */
20extern unsigned long max_pfn;
21
92aa63a5
VG		 22#ifdef CONFIG_CRASH_DUMP
23extern unsigned long saved_max_pfn;
24#endif
25
1da177e4
LT		 26/*
27 * node_bootmem_map is a map pointer - the bits represent all physical
28 * memory pages (including holes) on the node.
29 */
30typedef struct bootmem_data {
3560e249 31 unsigned long node_min_pfn;
1da177e4
LT		 32 unsigned long node_low_pfn;
33 void *node_bootmem_map;
5f2809e6
JW		 34 unsigned long last_end_off;
35 unsigned long hint_idx;
679bc9fb 36 struct list_head list;
1da177e4
LT		 37} bootmem_data_t;
38
b61bfa3c
JW		 39extern bootmem_data_t bootmem_node_data[];
40
f71bf0ca 41extern unsigned long bootmem_bootmap_pages(unsigned long);
223e8dc9
JW		 42
43extern unsigned long init_bootmem_node(pg_data_t *pgdat,
44 unsigned long freepfn,
45 unsigned long startpfn,
46 unsigned long endpfn);
f71bf0ca 47extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
223e8dc9
JW		 48
49extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
50extern unsigned long free_all_bootmem(void);
51
52extern void free_bootmem_node(pg_data_t *pgdat,
53 unsigned long addr,
54 unsigned long size);
f71bf0ca 55extern void free_bootmem(unsigned long addr, unsigned long size);
9f993ac3 56extern void free_bootmem_late(unsigned long addr, unsigned long size);
223e8dc9
JW		 57
58/*
59 * Flags for reserve_bootmem (also if CONFIG_HAVE_ARCH_BOOTMEM_NODE,
60 * the architecture-specific code should honor this).
61 *
62 * If flags is 0, then the return value is always 0 (success). If
63 * flags contains BOOTMEM_EXCLUSIVE, then -EBUSY is returned if the
64 * memory already was reserved.
65 */
66#define BOOTMEM_DEFAULT 0
67#define BOOTMEM_EXCLUSIVE (1<<0)
68
c1329375
TH		 69extern int reserve_bootmem(unsigned long addr,
70 unsigned long size,
71 int flags);
2d0aae41
TH		 72extern int reserve_bootmem_node(pg_data_t *pgdat,
73 unsigned long physaddr,
74 unsigned long size,
75 int flags);
76
77extern void *__alloc_bootmem(unsigned long size,
f71bf0ca
FBH		 78 unsigned long align,
79 unsigned long goal);
2d0aae41 80extern void *__alloc_bootmem_nopanic(unsigned long size,
f71bf0ca
FBH		 81 unsigned long align,
82 unsigned long goal);
223e8dc9
JW		 83extern void *__alloc_bootmem_node(pg_data_t *pgdat,
84 unsigned long size,
85 unsigned long align,
86 unsigned long goal);
87extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat,
88 unsigned long size,
89 unsigned long align,
90 unsigned long goal);
2d0aae41
TH		 91extern void *__alloc_bootmem_low(unsigned long size,
92 unsigned long align,
93 unsigned long goal);
f71bf0ca
FBH		 94extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
95 unsigned long size,
96 unsigned long align,
97 unsigned long goal);
c1329375 98
1da177e4 99#define alloc_bootmem(x) \
71fb2e8f 100 __alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
74768ed8
JB		 101#define alloc_bootmem_nopanic(x) \
102 __alloc_bootmem_nopanic(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
1da177e4 103#define alloc_bootmem_pages(x) \
71fb2e8f 104 __alloc_bootmem(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
74768ed8
JB		 105#define alloc_bootmem_pages_nopanic(x) \
106 __alloc_bootmem_nopanic(x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
1da177e4 107#define alloc_bootmem_node(pgdat, x) \
71fb2e8f 108 __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
1da177e4 109#define alloc_bootmem_pages_node(pgdat, x) \
71fb2e8f 110 __alloc_bootmem_node(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
2d0aae41
TH		 111#define alloc_bootmem_pages_node_nopanic(pgdat, x) \
112 __alloc_bootmem_node_nopanic(pgdat, x, PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
113
114#define alloc_bootmem_low(x) \
115 __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0)
116#define alloc_bootmem_low_pages(x) \
117 __alloc_bootmem_low(x, PAGE_SIZE, 0)
1da177e4 118#define alloc_bootmem_low_pages_node(pgdat, x) \
71fb2e8f 119 __alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
c6af5e9f
JW		 120
121extern int reserve_bootmem_generic(unsigned long addr, unsigned long size,
122 int flags);
223e8dc9
JW		 123
124extern void *alloc_bootmem_section(unsigned long size,
125 unsigned long section_nr);
1da177e4 126
6f167ec7
DH		 127#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
128extern void *alloc_remap(int nid, unsigned long size);
129#else
130static inline void *alloc_remap(int nid, unsigned long size)
131{
132 return NULL;
133}
f71bf0ca 134#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
6f167ec7 135
f71bf0ca
FBH		 136extern void *alloc_large_system_hash(const char *tablename,
137 unsigned long bucketsize,
138 unsigned long numentries,
139 int scale,
140 int flags,
141 unsigned int *_hash_shift,
142 unsigned int *_hash_mask,
143 unsigned long limit);
1da177e4 144
04903664 145#define HASH_EARLY 0x00000001 /* Allocating during early boot? */
2c85f51d
JB		 146#define HASH_SMALL 0x00000002 /* sub-page allocation allowed, min
147 * shift passed via *_hash_shift */
1da177e4 148
c2fdf3a9
AB		 149/* Only NUMA needs hash distribution. 64bit NUMA architectures have
150 * sufficient vmalloc space.
1da177e4 151 */
c2fdf3a9 152#if defined(CONFIG_NUMA) && defined(CONFIG_64BIT)
1da177e4
LT		 153#define HASHDIST_DEFAULT 1
154#else
155#define HASHDIST_DEFAULT 0
156#endif
f034b5d4 157extern int hashdist; /* Distribute hashes across NUMA nodes? */
1da177e4
LT		 158
159
160#endif /* _LINUX_BOOTMEM_H */
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