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1da177e4 LT |
1 | /* |
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 | |
4be44fcd | 37 | ACPI_MODULE_NAME("numa") |
1da177e4 | 38 | |
4be44fcd LB |
39 | extern 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); | |
1da177e4 | 44 | |
4be44fcd | 45 | void __init acpi_table_print_srat_entry(acpi_table_entry_header * header) |
1da177e4 LT |
46 | { |
47 | ||
4be44fcd | 48 | ACPI_FUNCTION_NAME("acpi_table_print_srat_entry"); |
1da177e4 LT |
49 | |
50 | if (!header) | |
51 | return; | |
52 | ||
53 | switch (header->type) { | |
54 | ||
55 | case ACPI_SRAT_PROCESSOR_AFFINITY: | |
56 | #ifdef ACPI_DEBUG_OUTPUT | |
4be44fcd LB |
57 | { |
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 */ | |
1da177e4 LT |
68 | break; |
69 | ||
70 | case ACPI_SRAT_MEMORY_AFFINITY: | |
71 | #ifdef ACPI_DEBUG_OUTPUT | |
4be44fcd LB |
72 | { |
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 */ | |
1da177e4 LT |
87 | break; |
88 | ||
89 | default: | |
4be44fcd LB |
90 | printk(KERN_WARNING PREFIX |
91 | "Found unsupported SRAT entry (type = 0x%x)\n", | |
92 | header->type); | |
1da177e4 LT |
93 | break; |
94 | } | |
95 | } | |
96 | ||
4be44fcd | 97 | static int __init acpi_parse_slit(unsigned long phys_addr, unsigned long size) |
1da177e4 | 98 | { |
4be44fcd LB |
99 | struct acpi_table_slit *slit; |
100 | u32 localities; | |
1da177e4 LT |
101 | |
102 | if (!phys_addr || !size) | |
103 | return -EINVAL; | |
104 | ||
4be44fcd | 105 | slit = (struct acpi_table_slit *)__va(phys_addr); |
1da177e4 LT |
106 | |
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 | ||
1da177e4 | 115 | static int __init |
4be44fcd LB |
116 | acpi_parse_processor_affinity(acpi_table_entry_header * header, |
117 | const unsigned long end) | |
1da177e4 LT |
118 | { |
119 | struct acpi_table_processor_affinity *processor_affinity; | |
120 | ||
4be44fcd | 121 | processor_affinity = (struct acpi_table_processor_affinity *)header; |
1da177e4 LT |
122 | 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 | ||
1da177e4 | 133 | static int __init |
4be44fcd LB |
134 | acpi_parse_memory_affinity(acpi_table_entry_header * header, |
135 | const unsigned long end) | |
1da177e4 LT |
136 | { |
137 | struct acpi_table_memory_affinity *memory_affinity; | |
138 | ||
4be44fcd | 139 | memory_affinity = (struct acpi_table_memory_affinity *)header; |
1da177e4 LT |
140 | 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 | ||
4be44fcd | 151 | static int __init acpi_parse_srat(unsigned long phys_addr, unsigned long size) |
1da177e4 | 152 | { |
4be44fcd | 153 | struct acpi_table_srat *srat; |
1da177e4 LT |
154 | |
155 | if (!phys_addr || !size) | |
156 | return -EINVAL; | |
157 | ||
4be44fcd | 158 | srat = (struct acpi_table_srat *)__va(phys_addr); |
1da177e4 LT |
159 | |
160 | return 0; | |
161 | } | |
162 | ||
1da177e4 | 163 | int __init |
4be44fcd LB |
164 | acpi_table_parse_srat(enum acpi_srat_entry_id id, |
165 | acpi_madt_entry_handler handler, unsigned int max_entries) | |
1da177e4 | 166 | { |
4be44fcd LB |
167 | return acpi_table_parse_madt_family(ACPI_SRAT, |
168 | sizeof(struct acpi_table_srat), id, | |
169 | handler, max_entries); | |
1da177e4 LT |
170 | } |
171 | ||
4be44fcd | 172 | int __init acpi_numa_init(void) |
1da177e4 | 173 | { |
4be44fcd | 174 | int result; |
1da177e4 LT |
175 | |
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); | |
4be44fcd | 183 | result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); // IA64 specific |
1da177e4 LT |
184 | } |
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 | ||
4be44fcd | 193 | int acpi_get_pxm(acpi_handle h) |
1da177e4 LT |
194 | { |
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); | |
4be44fcd | 206 | } while (ACPI_SUCCESS(status)); |
1da177e4 LT |
207 | return -1; |
208 | } | |
4be44fcd | 209 | |
1da177e4 | 210 | EXPORT_SYMBOL(acpi_get_pxm); |