drivers/acpi/numa.c

   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 #include <acpi/acpi_bus.h>
  33 #include <acpi/acmacros.h>
  34
  35 #define ACPI_NUMA       0x80000000
  36 #define _COMPONENT      ACPI_NUMA
  37         ACPI_MODULE_NAME ("numa")
  38
  39 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, unsigned int max_entries);
  40
  41 void __init
  42 acpi_table_print_srat_entry (
  43         acpi_table_entry_header *header)
  44 {
  45
  46         ACPI_FUNCTION_NAME ("acpi_table_print_srat_entry");
  47
  48         if (!header)
  49                 return;
  50
  51         switch (header->type) {
  52
  53         case ACPI_SRAT_PROCESSOR_AFFINITY:
  54         {
  55                 struct acpi_table_processor_affinity *p =
  56                         (struct acpi_table_processor_affinity*) header;
  57                 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
  58                        p->apic_id, p->lsapic_eid, p->proximity_domain,
  59                        p->flags.enabled?"enabled":"disabled"));
  60         }
  61                 break;
  62
  63         case ACPI_SRAT_MEMORY_AFFINITY:
  64         {
  65                 struct acpi_table_memory_affinity *p =
  66                         (struct acpi_table_memory_affinity*) header;
  67                 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
  68                        p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
  69                        p->memory_type, p->proximity_domain,
  70                        p->flags.enabled ? "enabled" : "disabled",
  71                        p->flags.hot_pluggable ? " hot-pluggable" : ""));
  72         }
  73                 break;
  74
  75         default:
  76                 printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
  77                         header->type);
  78                 break;
  79         }
  80 }
  81
  82
  83 static int __init
  84 acpi_parse_slit (unsigned long phys_addr, unsigned long size)
  85 {
  86         struct acpi_table_slit  *slit;
  87         u32                     localities;
  88
  89         if (!phys_addr || !size)
  90                 return -EINVAL;
  91
  92         slit = (struct acpi_table_slit *) __va(phys_addr);
  93
  94         /* downcast just for %llu vs %lu for i386/ia64  */
  95         localities = (u32) slit->localities;
  96
  97         printk(KERN_INFO PREFIX "SLIT localities %ux%u\n", localities, localities);
  98
  99         acpi_numa_slit_init(slit);
 100
 101         return 0;
 102 }
 103
 104
 105 static int __init
 106 acpi_parse_processor_affinity (acpi_table_entry_header *header)
 107 {
 108         struct acpi_table_processor_affinity *processor_affinity;
 109
 110         processor_affinity = (struct acpi_table_processor_affinity*) header;
 111         if (!processor_affinity)
 112                 return -EINVAL;
 113
 114         acpi_table_print_srat_entry(header);
 115
 116         /* let architecture-dependent part to do it */
 117         acpi_numa_processor_affinity_init(processor_affinity);
 118
 119         return 0;
 120 }
 121
 122
 123 static int __init
 124 acpi_parse_memory_affinity (acpi_table_entry_header *header)
 125 {
 126         struct acpi_table_memory_affinity *memory_affinity;
 127
 128         memory_affinity = (struct acpi_table_memory_affinity*) header;
 129         if (!memory_affinity)
 130                 return -EINVAL;
 131
 132         acpi_table_print_srat_entry(header);
 133
 134         /* let architecture-dependent part to do it */
 135         acpi_numa_memory_affinity_init(memory_affinity);
 136
 137         return 0;
 138 }
 139
 140
 141 static int __init
 142 acpi_parse_srat (unsigned long phys_addr, unsigned long size)
 143 {
 144         struct acpi_table_srat  *srat;
 145
 146         if (!phys_addr || !size)
 147                 return -EINVAL;
 148
 149         srat = (struct acpi_table_srat *) __va(phys_addr);
 150
 151         printk(KERN_INFO PREFIX "SRAT revision %d\n", srat->table_revision);
 152
 153         return 0;
 154 }
 155
 156
 157 int __init
 158 acpi_table_parse_srat (
 159         enum acpi_srat_entry_id id,
 160         acpi_madt_entry_handler handler,
 161         unsigned int max_entries)
 162 {
 163         return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
 164                                             id, handler, max_entries);
 165 }
 166
 167
 168 int __init
 169 acpi_numa_init()
 170 {
 171         int                     result;
 172
 173         /* SRAT: Static Resource Affinity Table */
 174         result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
 175
 176         if (result > 0) {
 177                 result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
 178                                                acpi_parse_processor_affinity,
 179                                                NR_CPUS);
 180                 result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
 181                                                acpi_parse_memory_affinity,
 182                                                NR_NODE_MEMBLKS);        // IA64 specific
 183         } else {
 184                 /* FIXME */
 185                 printk("Warning: acpi_table_parse(ACPI_SRAT) returned %d!\n",result);
 186         }
 187
 188         /* SLIT: System Locality Information Table */
 189         result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
 190         if (result < 1) {
 191                 /* FIXME */
 192                 printk("Warning: acpi_table_parse(ACPI_SLIT) returned %d!\n",result);
 193         }
 194
 195         acpi_numa_arch_fixup();
 196         return 0;
 197 }