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/*
* 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 <xen/config.h>
#include <xen/init.h>
#include <xen/types.h>
#include <xen/errno.h>
#include <xen/acpi.h>
#include <xen/numa.h>
#include <acpi/acmacros.h>
#define ACPI_NUMA 0x80000000
#define _COMPONENT ACPI_NUMA
ACPI_MODULE_NAME("numa")
int __initdata srat_rev;
void __init acpi_table_print_srat_entry(struct acpi_subtable_header * header)
{
ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
if (!header)
return;
switch (header->type) {
case ACPI_SRAT_TYPE_CPU_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
{
struct acpi_srat_cpu_affinity *p =
container_of(header, struct acpi_srat_cpu_affinity, header);
u32 proximity_domain = p->proximity_domain_lo;
if (srat_rev >= 2) {
proximity_domain |= p->proximity_domain_hi[0] << 8;
proximity_domain |= p->proximity_domain_hi[1] << 16;
proximity_domain |= p->proximity_domain_hi[2] << 24;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
p->apic_id, p->local_sapic_eid,
proximity_domain,
p->flags & ACPI_SRAT_CPU_ENABLED
? "enabled" : "disabled"));
}
#endif /* ACPI_DEBUG_OUTPUT */
break;
case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
{
struct acpi_srat_mem_affinity *p =
container_of(header, struct acpi_srat_mem_affinity, header);
u32 proximity_domain = p->proximity_domain;
if (srat_rev < 2)
proximity_domain &= 0xff;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"SRAT Memory (%#"PRIx64
" length %#"PRIx64")"
" in proximity domain %d %s%s\n",
p->base_address, p->length,
proximity_domain,
p->flags & ACPI_SRAT_MEM_ENABLED
? "enabled" : "disabled",
p->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE
? " hot-pluggable" : ""));
}
#endif /* ACPI_DEBUG_OUTPUT */
break;
case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
{
struct acpi_srat_x2apic_cpu_affinity *p =
(struct acpi_srat_x2apic_cpu_affinity *)header;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"SRAT Processor (x2apicid[0x%08x]) in"
" proximity domain %d %s\n",
p->apic_id,
p->proximity_domain,
(p->flags & ACPI_SRAT_CPU_ENABLED) ?
"enabled" : "disabled"));
}
#endif /* ACPI_DEBUG_OUTPUT */
break;
default:
printk(KERN_WARNING PREFIX
"Found unsupported SRAT entry (type = %#x)\n",
header->type);
break;
}
}
static int __init acpi_parse_slit(struct acpi_table_header *table)
{
acpi_numa_slit_init((struct acpi_table_slit *)table);
return 0;
}
static int __init
acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
const unsigned long end)
{
struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
processor_affinity = (struct acpi_srat_x2apic_cpu_affinity *)header;
if (!processor_affinity)
return -EINVAL;
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
acpi_numa_x2apic_affinity_init(processor_affinity);
return 0;
}
static int __init
acpi_parse_processor_affinity(struct acpi_subtable_header * header,
const unsigned long end)
{
struct acpi_srat_cpu_affinity *processor_affinity
= container_of(header, struct acpi_srat_cpu_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(struct acpi_subtable_header * header,
const unsigned long end)
{
struct acpi_srat_mem_affinity *memory_affinity
= container_of(header, struct acpi_srat_mem_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;
}
int __init acpi_parse_srat(struct acpi_table_header *table)
{
if (!table)
return -EINVAL;
srat_rev = table->revision;
return 0;
}
int __init
acpi_table_parse_srat(int id, acpi_madt_entry_handler handler,
unsigned int max_entries)
{
return acpi_table_parse_entries(ACPI_SIG_SRAT,
sizeof(struct acpi_table_srat), id,
handler, max_entries);
}
int __init acpi_numa_init(void)
{
/* SRAT: Static Resource Affinity Table */
if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
acpi_parse_x2apic_affinity, NR_CPUS);
acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
acpi_parse_processor_affinity, NR_CPUS);
acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
acpi_parse_memory_affinity,
NR_NODE_MEMBLKS);
}
/* SLIT: System Locality Information Table */
acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
acpi_numa_arch_fixup();
return 0;
}
#if 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);
#endif
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