linux/drivers/acpi/numa.c

214 lines
5.3 KiB
C
Raw Normal View History

/*
* acpi_numa.c - ACPI NUMA support
*
* Copyright (C) 2002 Takayoshi Kochi <t-kochi@bq.jp.nec.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*/
#include <linux/module.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acmacros.h>
#define ACPI_NUMA 0x80000000
#define _COMPONENT ACPI_NUMA
ACPI_MODULE_NAME ("numa")
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);
void __init
acpi_table_print_srat_entry (
acpi_table_entry_header *header)
{
ACPI_FUNCTION_NAME ("acpi_table_print_srat_entry");
if (!header)
return;
switch (header->type) {
case ACPI_SRAT_PROCESSOR_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
{
struct acpi_table_processor_affinity *p =
(struct acpi_table_processor_affinity*) header;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
p->apic_id, p->lsapic_eid, p->proximity_domain,
p->flags.enabled?"enabled":"disabled"));
}
#endif /* ACPI_DEBUG_OUTPUT */
break;
case ACPI_SRAT_MEMORY_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
{
struct acpi_table_memory_affinity *p =
(struct acpi_table_memory_affinity*) header;
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",
p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
p->memory_type, p->proximity_domain,
p->flags.enabled ? "enabled" : "disabled",
p->flags.hot_pluggable ? " hot-pluggable" : ""));
}
#endif /* ACPI_DEBUG_OUTPUT */
break;
default:
printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
header->type);
break;
}
}
static int __init
acpi_parse_slit (unsigned long phys_addr, unsigned long size)
{
struct acpi_table_slit *slit;
u32 localities;
if (!phys_addr || !size)
return -EINVAL;
slit = (struct acpi_table_slit *) __va(phys_addr);
/* downcast just for %llu vs %lu for i386/ia64 */
localities = (u32) slit->localities;
acpi_numa_slit_init(slit);
return 0;
}
static int __init
acpi_parse_processor_affinity (
acpi_table_entry_header *header,
const unsigned long end)
{
struct acpi_table_processor_affinity *processor_affinity;
processor_affinity = (struct acpi_table_processor_affinity*) header;
if (!processor_affinity)
return -EINVAL;
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
acpi_numa_processor_affinity_init(processor_affinity);
return 0;
}
static int __init
acpi_parse_memory_affinity (
acpi_table_entry_header *header,
const unsigned long end)
{
struct acpi_table_memory_affinity *memory_affinity;
memory_affinity = (struct acpi_table_memory_affinity*) header;
if (!memory_affinity)
return -EINVAL;
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
acpi_numa_memory_affinity_init(memory_affinity);
return 0;
}
static int __init
acpi_parse_srat (unsigned long phys_addr, unsigned long size)
{
struct acpi_table_srat *srat;
if (!phys_addr || !size)
return -EINVAL;
srat = (struct acpi_table_srat *) __va(phys_addr);
return 0;
}
int __init
acpi_table_parse_srat (
enum acpi_srat_entry_id id,
acpi_madt_entry_handler handler,
unsigned int max_entries)
{
return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
id, handler, max_entries);
}
int __init
acpi_numa_init(void)
{
int result;
/* SRAT: Static Resource Affinity Table */
result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
if (result > 0) {
result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
acpi_parse_processor_affinity,
NR_CPUS);
result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
acpi_parse_memory_affinity,
NR_NODE_MEMBLKS); // IA64 specific
}
/* SLIT: System Locality Information Table */
result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
acpi_numa_arch_fixup();
return 0;
}
int
acpi_get_pxm(acpi_handle h)
{
unsigned long pxm;
acpi_status status;
acpi_handle handle;
acpi_handle phandle = h;
do {
handle = phandle;
status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
if (ACPI_SUCCESS(status))
return (int)pxm;
status = acpi_get_parent(handle, &phandle);
} while(ACPI_SUCCESS(status));
return -1;
}
EXPORT_SYMBOL(acpi_get_pxm);