ia64/linux-2.6.18-xen.hg

view arch/m32r/mm/discontig.c @ 647:a5bb490065f6

Fix the build after public header sync.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Aug 13 14:01:49 2008 +0100 (2008-08-13)
parents 831230e53067
children
line source
1 /*
2 * linux/arch/m32r/mm/discontig.c
3 *
4 * Discontig memory support
5 *
6 * Copyright (c) 2003 Hitoshi Yamamoto
7 */
9 #include <linux/mm.h>
10 #include <linux/bootmem.h>
11 #include <linux/mmzone.h>
12 #include <linux/initrd.h>
13 #include <linux/nodemask.h>
14 #include <linux/module.h>
15 #include <linux/pfn.h>
17 #include <asm/setup.h>
19 extern char _end[];
21 struct pglist_data *node_data[MAX_NUMNODES];
22 EXPORT_SYMBOL(node_data);
23 static bootmem_data_t node_bdata[MAX_NUMNODES] __initdata;
25 pg_data_t m32r_node_data[MAX_NUMNODES];
27 /* Memory profile */
28 typedef struct {
29 unsigned long start_pfn;
30 unsigned long pages;
31 unsigned long holes;
32 unsigned long free_pfn;
33 } mem_prof_t;
34 static mem_prof_t mem_prof[MAX_NUMNODES];
36 static void __init mem_prof_init(void)
37 {
38 unsigned long start_pfn, holes, free_pfn;
39 const unsigned long zone_alignment = 1UL << (MAX_ORDER - 1);
40 unsigned long ul;
41 mem_prof_t *mp;
43 /* Node#0 SDRAM */
44 mp = &mem_prof[0];
45 mp->start_pfn = PFN_UP(CONFIG_MEMORY_START);
46 mp->pages = PFN_DOWN(CONFIG_MEMORY_SIZE);
47 mp->holes = 0;
48 mp->free_pfn = PFN_UP(__pa(_end));
50 /* Node#1 internal SRAM */
51 mp = &mem_prof[1];
52 start_pfn = free_pfn = PFN_UP(CONFIG_IRAM_START);
53 holes = 0;
54 if (start_pfn & (zone_alignment - 1)) {
55 ul = zone_alignment;
56 while (start_pfn >= ul)
57 ul += zone_alignment;
59 start_pfn = ul - zone_alignment;
60 holes = free_pfn - start_pfn;
61 }
63 mp->start_pfn = start_pfn;
64 mp->pages = PFN_DOWN(CONFIG_IRAM_SIZE) + holes;
65 mp->holes = holes;
66 mp->free_pfn = PFN_UP(CONFIG_IRAM_START);
67 }
69 unsigned long __init setup_memory(void)
70 {
71 unsigned long bootmap_size;
72 unsigned long min_pfn;
73 int nid;
74 mem_prof_t *mp;
76 max_low_pfn = 0;
77 min_low_pfn = -1;
79 mem_prof_init();
81 for_each_online_node(nid) {
82 mp = &mem_prof[nid];
83 NODE_DATA(nid)=(pg_data_t *)&m32r_node_data[nid];
84 NODE_DATA(nid)->bdata = &node_bdata[nid];
85 min_pfn = mp->start_pfn;
86 max_pfn = mp->start_pfn + mp->pages;
87 bootmap_size = init_bootmem_node(NODE_DATA(nid), mp->free_pfn,
88 mp->start_pfn, max_pfn);
90 free_bootmem_node(NODE_DATA(nid), PFN_PHYS(mp->start_pfn),
91 PFN_PHYS(mp->pages));
93 reserve_bootmem_node(NODE_DATA(nid), PFN_PHYS(mp->start_pfn),
94 PFN_PHYS(mp->free_pfn - mp->start_pfn) + bootmap_size);
96 if (max_low_pfn < max_pfn)
97 max_low_pfn = max_pfn;
99 if (min_low_pfn > min_pfn)
100 min_low_pfn = min_pfn;
101 }
103 #ifdef CONFIG_BLK_DEV_INITRD
104 if (LOADER_TYPE && INITRD_START) {
105 if (INITRD_START + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) {
106 reserve_bootmem_node(NODE_DATA(0), INITRD_START,
107 INITRD_SIZE);
108 initrd_start = INITRD_START ?
109 INITRD_START + PAGE_OFFSET : 0;
111 initrd_end = initrd_start + INITRD_SIZE;
112 printk("initrd:start[%08lx],size[%08lx]\n",
113 initrd_start, INITRD_SIZE);
114 } else {
115 printk("initrd extends beyond end of memory "
116 "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
117 INITRD_START + INITRD_SIZE,
118 PFN_PHYS(max_low_pfn));
120 initrd_start = 0;
121 }
122 }
123 #endif /* CONFIG_BLK_DEV_INITRD */
125 return max_low_pfn;
126 }
128 #define START_PFN(nid) \
129 (NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
130 #define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
132 unsigned long __init zone_sizes_init(void)
133 {
134 unsigned long zones_size[MAX_NR_ZONES], zholes_size[MAX_NR_ZONES];
135 unsigned long low, start_pfn;
136 unsigned long holes = 0;
137 int nid, i;
138 mem_prof_t *mp;
140 for_each_online_node(nid) {
141 mp = &mem_prof[nid];
142 for (i = 0 ; i < MAX_NR_ZONES ; i++) {
143 zones_size[i] = 0;
144 zholes_size[i] = 0;
145 }
146 start_pfn = START_PFN(nid);
147 low = MAX_LOW_PFN(nid);
148 zones_size[ZONE_DMA] = low - start_pfn;
149 zholes_size[ZONE_DMA] = mp->holes;
150 holes += zholes_size[ZONE_DMA];
152 free_area_init_node(nid, NODE_DATA(nid), zones_size,
153 start_pfn, zholes_size);
154 }
156 /*
157 * For test
158 * Use all area of internal RAM.
159 * see __alloc_pages()
160 */
161 NODE_DATA(1)->node_zones->pages_min = 0;
162 NODE_DATA(1)->node_zones->pages_low = 0;
163 NODE_DATA(1)->node_zones->pages_high = 0;
165 return holes;
166 }