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
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
33 #define PREFIX "ACPI: "
34
35 extern int __init acpi_table_parse_madt_family (enum acpi_table_id id, unsigned long madt_size, int entry_id, acpi_madt_entry_handler handler);
36
37 void __init
acpi_table_print_srat_entry(acpi_table_entry_header * header)38 acpi_table_print_srat_entry (
39 acpi_table_entry_header *header)
40 {
41 if (!header)
42 return;
43
44 switch (header->type) {
45
46 case ACPI_SRAT_PROCESSOR_AFFINITY:
47 {
48 struct acpi_table_processor_affinity *p =
49 (struct acpi_table_processor_affinity*) header;
50 printk(KERN_INFO PREFIX "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
51 p->apic_id, p->lsapic_eid, p->proximity_domain,
52 p->flags.enabled?"enabled":"disabled");
53 }
54 break;
55
56 case ACPI_SRAT_MEMORY_AFFINITY:
57 {
58 struct acpi_table_memory_affinity *p =
59 (struct acpi_table_memory_affinity*) header;
60 printk(KERN_INFO PREFIX "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
61 p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
62 p->memory_type, p->proximity_domain,
63 p->flags.enabled ? "enabled" : "disabled",
64 p->flags.hot_pluggable ? " hot-pluggable" : "");
65 }
66 break;
67
68 default:
69 printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
70 header->type);
71 break;
72 }
73 }
74
75
76 static int __init
acpi_parse_slit(unsigned long phys_addr,unsigned long size)77 acpi_parse_slit (unsigned long phys_addr, unsigned long size)
78 {
79 struct acpi_table_slit *slit;
80 u32 localities;
81
82 if (!phys_addr || !size)
83 return -EINVAL;
84
85 slit = (struct acpi_table_slit *) __va(phys_addr);
86
87 /* downcast just for %llu vs %lu for i386/ia64 */
88 localities = (u32) slit->localities;
89
90 printk(KERN_INFO PREFIX "SLIT localities %ux%u\n", localities, localities);
91
92 acpi_numa_slit_init(slit);
93
94 return 0;
95 }
96
97
98 static int __init
acpi_parse_processor_affinity(acpi_table_entry_header * header)99 acpi_parse_processor_affinity (acpi_table_entry_header *header)
100 {
101 struct acpi_table_processor_affinity *processor_affinity = NULL;
102
103 processor_affinity = (struct acpi_table_processor_affinity*) header;
104 if (!processor_affinity)
105 return -EINVAL;
106
107 acpi_table_print_srat_entry(header);
108
109 /* let architecture-dependent part to do it */
110 acpi_numa_processor_affinity_init(processor_affinity);
111
112 return 0;
113 }
114
115
116 static int __init
acpi_parse_memory_affinity(acpi_table_entry_header * header)117 acpi_parse_memory_affinity (acpi_table_entry_header *header)
118 {
119 struct acpi_table_memory_affinity *memory_affinity = NULL;
120
121 memory_affinity = (struct acpi_table_memory_affinity*) header;
122 if (!memory_affinity)
123 return -EINVAL;
124
125 acpi_table_print_srat_entry(header);
126
127 /* let architecture-dependent part to do it */
128 acpi_numa_memory_affinity_init(memory_affinity);
129
130 return 0;
131 }
132
133
134 static int __init
acpi_parse_srat(unsigned long phys_addr,unsigned long size)135 acpi_parse_srat (unsigned long phys_addr, unsigned long size)
136 {
137 struct acpi_table_srat *srat = NULL;
138
139 if (!phys_addr || !size)
140 return -EINVAL;
141
142 srat = (struct acpi_table_srat *) __va(phys_addr);
143
144 printk(KERN_INFO PREFIX "SRAT revision %d\n", srat->table_revision);
145
146 return 0;
147 }
148
149
150 int __init
acpi_table_parse_srat(enum acpi_srat_entry_id id,acpi_madt_entry_handler handler)151 acpi_table_parse_srat (
152 enum acpi_srat_entry_id id,
153 acpi_madt_entry_handler handler)
154 {
155 return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
156 id, handler);
157 }
158
159
160 int __init
acpi_numa_init()161 acpi_numa_init()
162 {
163 int result;
164
165 /* SRAT: Static Resource Affinity Table */
166 result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
167
168 if (result > 0) {
169 result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
170 acpi_parse_processor_affinity);
171 result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
172 acpi_parse_memory_affinity);
173 } else {
174 /* FIXME */
175 printk("Warning: acpi_table_parse(ACPI_SRAT) returned %d!\n",result);
176 }
177
178 /* SLIT: System Locality Information Table */
179 result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
180 if (result < 1) {
181 /* FIXME */
182 printk("Warning: acpi_table_parse(ACPI_SLIT) returned %d!\n",result);
183 }
184
185 acpi_numa_arch_fixup();
186 return 0;
187 }
188