Loading...
1/*
2 * Written by: Patricia Gaughen <gone@us.ibm.com>, IBM Corporation
3 * August 2002: added remote node KVA remap - Martin J. Bligh
4 *
5 * Copyright (C) 2002, IBM Corp.
6 *
7 * All rights reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
17 * NON INFRINGEMENT. See the GNU General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#include <linux/memblock.h>
26#include <linux/init.h>
27
28#include "numa_internal.h"
29
30#ifdef CONFIG_DISCONTIGMEM
31/*
32 * 4) physnode_map - the mapping between a pfn and owning node
33 * physnode_map keeps track of the physical memory layout of a generic
34 * numa node on a 64Mb break (each element of the array will
35 * represent 64Mb of memory and will be marked by the node id. so,
36 * if the first gig is on node 0, and the second gig is on node 1
37 * physnode_map will contain:
38 *
39 * physnode_map[0-15] = 0;
40 * physnode_map[16-31] = 1;
41 * physnode_map[32- ] = -1;
42 */
43s8 physnode_map[MAX_SECTIONS] __read_mostly = { [0 ... (MAX_SECTIONS - 1)] = -1};
44EXPORT_SYMBOL(physnode_map);
45
46void memory_present(int nid, unsigned long start, unsigned long end)
47{
48 unsigned long pfn;
49
50 printk(KERN_INFO "Node: %d, start_pfn: %lx, end_pfn: %lx\n",
51 nid, start, end);
52 printk(KERN_DEBUG " Setting physnode_map array to node %d for pfns:\n", nid);
53 printk(KERN_DEBUG " ");
54 start = round_down(start, PAGES_PER_SECTION);
55 end = round_up(end, PAGES_PER_SECTION);
56 for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) {
57 physnode_map[pfn / PAGES_PER_SECTION] = nid;
58 printk(KERN_CONT "%lx ", pfn);
59 }
60 printk(KERN_CONT "\n");
61}
62#endif
63
64extern unsigned long highend_pfn, highstart_pfn;
65
66void __init initmem_init(void)
67{
68 x86_numa_init();
69
70#ifdef CONFIG_HIGHMEM
71 highstart_pfn = highend_pfn = max_pfn;
72 if (max_pfn > max_low_pfn)
73 highstart_pfn = max_low_pfn;
74 printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
75 pages_to_mb(highend_pfn - highstart_pfn));
76 high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;
77#else
78 high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
79#endif
80 printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
81 pages_to_mb(max_low_pfn));
82 printk(KERN_DEBUG "max_low_pfn = %lx, highstart_pfn = %lx\n",
83 max_low_pfn, highstart_pfn);
84
85 printk(KERN_DEBUG "Low memory ends at vaddr %08lx\n",
86 (ulong) pfn_to_kaddr(max_low_pfn));
87
88 printk(KERN_DEBUG "High memory starts at vaddr %08lx\n",
89 (ulong) pfn_to_kaddr(highstart_pfn));
90
91 __vmalloc_start_set = true;
92 setup_bootmem_allocator();
93}
1/*
2 * Written by: Patricia Gaughen <gone@us.ibm.com>, IBM Corporation
3 * August 2002: added remote node KVA remap - Martin J. Bligh
4 *
5 * Copyright (C) 2002, IBM Corp.
6 *
7 * All rights reserved.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
17 * NON INFRINGEMENT. See the GNU General Public License for more
18 * details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25#include <linux/bootmem.h>
26#include <linux/memblock.h>
27#include <linux/init.h>
28
29#include "numa_internal.h"
30
31#ifdef CONFIG_DISCONTIGMEM
32/*
33 * 4) physnode_map - the mapping between a pfn and owning node
34 * physnode_map keeps track of the physical memory layout of a generic
35 * numa node on a 64Mb break (each element of the array will
36 * represent 64Mb of memory and will be marked by the node id. so,
37 * if the first gig is on node 0, and the second gig is on node 1
38 * physnode_map will contain:
39 *
40 * physnode_map[0-15] = 0;
41 * physnode_map[16-31] = 1;
42 * physnode_map[32- ] = -1;
43 */
44s8 physnode_map[MAX_SECTIONS] __read_mostly = { [0 ... (MAX_SECTIONS - 1)] = -1};
45EXPORT_SYMBOL(physnode_map);
46
47void memory_present(int nid, unsigned long start, unsigned long end)
48{
49 unsigned long pfn;
50
51 printk(KERN_INFO "Node: %d, start_pfn: %lx, end_pfn: %lx\n",
52 nid, start, end);
53 printk(KERN_DEBUG " Setting physnode_map array to node %d for pfns:\n", nid);
54 printk(KERN_DEBUG " ");
55 start = round_down(start, PAGES_PER_SECTION);
56 end = round_up(end, PAGES_PER_SECTION);
57 for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) {
58 physnode_map[pfn / PAGES_PER_SECTION] = nid;
59 printk(KERN_CONT "%lx ", pfn);
60 }
61 printk(KERN_CONT "\n");
62}
63#endif
64
65extern unsigned long highend_pfn, highstart_pfn;
66
67void __init initmem_init(void)
68{
69 x86_numa_init();
70
71#ifdef CONFIG_HIGHMEM
72 highstart_pfn = highend_pfn = max_pfn;
73 if (max_pfn > max_low_pfn)
74 highstart_pfn = max_low_pfn;
75 printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
76 pages_to_mb(highend_pfn - highstart_pfn));
77 high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;
78#else
79 high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
80#endif
81 printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
82 pages_to_mb(max_low_pfn));
83 printk(KERN_DEBUG "max_low_pfn = %lx, highstart_pfn = %lx\n",
84 max_low_pfn, highstart_pfn);
85
86 printk(KERN_DEBUG "Low memory ends at vaddr %08lx\n",
87 (ulong) pfn_to_kaddr(max_low_pfn));
88
89 printk(KERN_DEBUG "High memory starts at vaddr %08lx\n",
90 (ulong) pfn_to_kaddr(highstart_pfn));
91
92 __vmalloc_start_set = true;
93 setup_bootmem_allocator();
94}