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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * acpi_numa.c - ACPI NUMA support
3 *
4 * Copyright (C) 2002 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
5 *
6 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
23 *
24 */
25#include <linux/module.h>
26#include <linux/config.h>
27#include <linux/init.h>
28#include <linux/kernel.h>
29#include <linux/types.h>
30#include <linux/errno.h>
31#include <linux/acpi.h>
32#include <acpi/acpi_bus.h>
33#include <acpi/acmacros.h>
34
35#define ACPI_NUMA 0x80000000
36#define _COMPONENT ACPI_NUMA
Len Brown4be44fc2005-08-05 00:44:28 -040037ACPI_MODULE_NAME("numa")
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Len Brown4be44fc2005-08-05 00:44:28 -040039extern int __init acpi_table_parse_madt_family(enum acpi_table_id id,
40 unsigned long madt_size,
41 int entry_id,
42 acpi_madt_entry_handler handler,
43 unsigned int max_entries);
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Len Brown4be44fc2005-08-05 00:44:28 -040045void __init acpi_table_print_srat_entry(acpi_table_entry_header * header)
Linus Torvalds1da177e2005-04-16 15:20:36 -070046{
47
Len Brown4be44fc2005-08-05 00:44:28 -040048 ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
50 if (!header)
51 return;
52
53 switch (header->type) {
54
55 case ACPI_SRAT_PROCESSOR_AFFINITY:
56#ifdef ACPI_DEBUG_OUTPUT
Len Brown4be44fc2005-08-05 00:44:28 -040057 {
58 struct acpi_table_processor_affinity *p =
59 (struct acpi_table_processor_affinity *)header;
60 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
61 "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
62 p->apic_id, p->lsapic_eid,
63 p->proximity_domain,
64 p->flags.
65 enabled ? "enabled" : "disabled"));
66 }
67#endif /* ACPI_DEBUG_OUTPUT */
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 break;
69
70 case ACPI_SRAT_MEMORY_AFFINITY:
71#ifdef ACPI_DEBUG_OUTPUT
Len Brown4be44fc2005-08-05 00:44:28 -040072 {
73 struct acpi_table_memory_affinity *p =
74 (struct acpi_table_memory_affinity *)header;
75 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
76 "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
77 p->base_addr_hi, p->base_addr_lo,
78 p->length_hi, p->length_lo,
79 p->memory_type, p->proximity_domain,
80 p->flags.
81 enabled ? "enabled" : "disabled",
82 p->flags.
83 hot_pluggable ? " hot-pluggable" :
84 ""));
85 }
86#endif /* ACPI_DEBUG_OUTPUT */
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 break;
88
89 default:
Len Brown4be44fc2005-08-05 00:44:28 -040090 printk(KERN_WARNING PREFIX
91 "Found unsupported SRAT entry (type = 0x%x)\n",
92 header->type);
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 break;
94 }
95}
96
Len Brown4be44fc2005-08-05 00:44:28 -040097static int __init acpi_parse_slit(unsigned long phys_addr, unsigned long size)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098{
Len Brown4be44fc2005-08-05 00:44:28 -040099 struct acpi_table_slit *slit;
100 u32 localities;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
102 if (!phys_addr || !size)
103 return -EINVAL;
104
Len Brown4be44fc2005-08-05 00:44:28 -0400105 slit = (struct acpi_table_slit *)__va(phys_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
107 /* downcast just for %llu vs %lu for i386/ia64 */
108 localities = (u32) slit->localities;
109
110 acpi_numa_slit_init(slit);
111
112 return 0;
113}
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115static int __init
Len Brown4be44fc2005-08-05 00:44:28 -0400116acpi_parse_processor_affinity(acpi_table_entry_header * header,
117 const unsigned long end)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118{
119 struct acpi_table_processor_affinity *processor_affinity;
120
Len Brown4be44fc2005-08-05 00:44:28 -0400121 processor_affinity = (struct acpi_table_processor_affinity *)header;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 if (!processor_affinity)
123 return -EINVAL;
124
125 acpi_table_print_srat_entry(header);
126
127 /* let architecture-dependent part to do it */
128 acpi_numa_processor_affinity_init(processor_affinity);
129
130 return 0;
131}
132
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133static int __init
Len Brown4be44fc2005-08-05 00:44:28 -0400134acpi_parse_memory_affinity(acpi_table_entry_header * header,
135 const unsigned long end)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136{
137 struct acpi_table_memory_affinity *memory_affinity;
138
Len Brown4be44fc2005-08-05 00:44:28 -0400139 memory_affinity = (struct acpi_table_memory_affinity *)header;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 if (!memory_affinity)
141 return -EINVAL;
142
143 acpi_table_print_srat_entry(header);
144
145 /* let architecture-dependent part to do it */
146 acpi_numa_memory_affinity_init(memory_affinity);
147
148 return 0;
149}
150
Len Brown4be44fc2005-08-05 00:44:28 -0400151static int __init acpi_parse_srat(unsigned long phys_addr, unsigned long size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152{
Len Brown4be44fc2005-08-05 00:44:28 -0400153 struct acpi_table_srat *srat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
155 if (!phys_addr || !size)
156 return -EINVAL;
157
Len Brown4be44fc2005-08-05 00:44:28 -0400158 srat = (struct acpi_table_srat *)__va(phys_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
160 return 0;
161}
162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163int __init
Len Brown4be44fc2005-08-05 00:44:28 -0400164acpi_table_parse_srat(enum acpi_srat_entry_id id,
165 acpi_madt_entry_handler handler, unsigned int max_entries)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166{
Len Brown4be44fc2005-08-05 00:44:28 -0400167 return acpi_table_parse_madt_family(ACPI_SRAT,
168 sizeof(struct acpi_table_srat), id,
169 handler, max_entries);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170}
171
Len Brown4be44fc2005-08-05 00:44:28 -0400172int __init acpi_numa_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173{
Len Brown4be44fc2005-08-05 00:44:28 -0400174 int result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
176 /* SRAT: Static Resource Affinity Table */
177 result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
178
179 if (result > 0) {
180 result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
181 acpi_parse_processor_affinity,
182 NR_CPUS);
Len Brown4be44fc2005-08-05 00:44:28 -0400183 result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); // IA64 specific
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 }
185
186 /* SLIT: System Locality Information Table */
187 result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
188
189 acpi_numa_arch_fixup();
190 return 0;
191}
192
Len Brown4be44fc2005-08-05 00:44:28 -0400193int acpi_get_pxm(acpi_handle h)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194{
195 unsigned long pxm;
196 acpi_status status;
197 acpi_handle handle;
198 acpi_handle phandle = h;
199
200 do {
201 handle = phandle;
202 status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
203 if (ACPI_SUCCESS(status))
204 return (int)pxm;
205 status = acpi_get_parent(handle, &phandle);
Len Brown4be44fc2005-08-05 00:44:28 -0400206 } while (ACPI_SUCCESS(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 return -1;
208}
Len Brown4be44fc2005-08-05 00:44:28 -0400209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210EXPORT_SYMBOL(acpi_get_pxm);