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authorThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 05:20:03 -0400
commit96a388de5dc53a8b234b3fd41f3ae2cedc9ffd42 (patch)
treed947a467aa2da3140279617bc4b9b101640d7bf4 /include/asm-x86/mmzone_32.h
parent27bd0c955648646abf2a353a8371d28c37bcd982 (diff)
i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/mmzone_32.h')
-rw-r--r--include/asm-x86/mmzone_32.h145
1 files changed, 145 insertions, 0 deletions
diff --git a/include/asm-x86/mmzone_32.h b/include/asm-x86/mmzone_32.h
new file mode 100644
index 000000000000..118e9812778f
--- /dev/null
+++ b/include/asm-x86/mmzone_32.h
@@ -0,0 +1,145 @@
1/*
2 * Written by Pat Gaughen (gone@us.ibm.com) Mar 2002
3 *
4 */
5
6#ifndef _ASM_MMZONE_H_
7#define _ASM_MMZONE_H_
8
9#include <asm/smp.h>
10
11#ifdef CONFIG_NUMA
12extern struct pglist_data *node_data[];
13#define NODE_DATA(nid) (node_data[nid])
14
15#ifdef CONFIG_X86_NUMAQ
16 #include <asm/numaq.h>
17#elif defined(CONFIG_ACPI_SRAT)/* summit or generic arch */
18 #include <asm/srat.h>
19#endif
20
21extern int get_memcfg_numa_flat(void );
22/*
23 * This allows any one NUMA architecture to be compiled
24 * for, and still fall back to the flat function if it
25 * fails.
26 */
27static inline void get_memcfg_numa(void)
28{
29#ifdef CONFIG_X86_NUMAQ
30 if (get_memcfg_numaq())
31 return;
32#elif defined(CONFIG_ACPI_SRAT)
33 if (get_memcfg_from_srat())
34 return;
35#endif
36
37 get_memcfg_numa_flat();
38}
39
40extern int early_pfn_to_nid(unsigned long pfn);
41extern void numa_kva_reserve(void);
42
43#else /* !CONFIG_NUMA */
44
45#define get_memcfg_numa get_memcfg_numa_flat
46#define get_zholes_size(n) (0)
47
48static inline void numa_kva_reserve(void)
49{
50}
51#endif /* CONFIG_NUMA */
52
53#ifdef CONFIG_DISCONTIGMEM
54
55/*
56 * generic node memory support, the following assumptions apply:
57 *
58 * 1) memory comes in 256Mb contigious chunks which are either present or not
59 * 2) we will not have more than 64Gb in total
60 *
61 * for now assume that 64Gb is max amount of RAM for whole system
62 * 64Gb / 4096bytes/page = 16777216 pages
63 */
64#define MAX_NR_PAGES 16777216
65#define MAX_ELEMENTS 256
66#define PAGES_PER_ELEMENT (MAX_NR_PAGES/MAX_ELEMENTS)
67
68extern s8 physnode_map[];
69
70static inline int pfn_to_nid(unsigned long pfn)
71{
72#ifdef CONFIG_NUMA
73 return((int) physnode_map[(pfn) / PAGES_PER_ELEMENT]);
74#else
75 return 0;
76#endif
77}
78
79/*
80 * Following are macros that each numa implmentation must define.
81 */
82
83#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
84#define node_end_pfn(nid) \
85({ \
86 pg_data_t *__pgdat = NODE_DATA(nid); \
87 __pgdat->node_start_pfn + __pgdat->node_spanned_pages; \
88})
89
90/* XXX: FIXME -- wli */
91#define kern_addr_valid(kaddr) (0)
92
93#ifdef CONFIG_X86_NUMAQ /* we have contiguous memory on NUMA-Q */
94#define pfn_valid(pfn) ((pfn) < num_physpages)
95#else
96static inline int pfn_valid(int pfn)
97{
98 int nid = pfn_to_nid(pfn);
99
100 if (nid >= 0)
101 return (pfn < node_end_pfn(nid));
102 return 0;
103}
104#endif /* CONFIG_X86_NUMAQ */
105
106#endif /* CONFIG_DISCONTIGMEM */
107
108#ifdef CONFIG_NEED_MULTIPLE_NODES
109
110/*
111 * Following are macros that are specific to this numa platform.
112 */
113#define reserve_bootmem(addr, size) \
114 reserve_bootmem_node(NODE_DATA(0), (addr), (size))
115#define alloc_bootmem(x) \
116 __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
117#define alloc_bootmem_low(x) \
118 __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, 0)
119#define alloc_bootmem_pages(x) \
120 __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, __pa(MAX_DMA_ADDRESS))
121#define alloc_bootmem_low_pages(x) \
122 __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0)
123#define alloc_bootmem_node(pgdat, x) \
124({ \
125 struct pglist_data __maybe_unused \
126 *__alloc_bootmem_node__pgdat = (pgdat); \
127 __alloc_bootmem_node(NODE_DATA(0), (x), SMP_CACHE_BYTES, \
128 __pa(MAX_DMA_ADDRESS)); \
129})
130#define alloc_bootmem_pages_node(pgdat, x) \
131({ \
132 struct pglist_data __maybe_unused \
133 *__alloc_bootmem_node__pgdat = (pgdat); \
134 __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, \
135 __pa(MAX_DMA_ADDRESS)) \
136})
137#define alloc_bootmem_low_pages_node(pgdat, x) \
138({ \
139 struct pglist_data __maybe_unused \
140 *__alloc_bootmem_node__pgdat = (pgdat); \
141 __alloc_bootmem_node(NODE_DATA(0), (x), PAGE_SIZE, 0); \
142})
143#endif /* CONFIG_NEED_MULTIPLE_NODES */
144
145#endif /* _ASM_MMZONE_H_ */