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x86, ACPI: add support for x2apic ACPI extensions

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All logical processors with APIC ID values of 255 and greater will have their
APIC reported through Processor X2APIC structure (type-9 entry type) and all
logical processors with APIC ID less than 255 will have their APIC reported
through legacy Processor Local APIC (type-0 entry type) only. This is the
same case even for NMI structure reporting.
    
The Processor X2APIC Affinity structure provides the association between the
X2APIC ID of a logical processor and the proximity domain to which the logical
processor belongs.
    
For OSPM, Procssor IDs outside the 0-254 range are to be declared as Device()
objects in the ACPI namespace.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Suresh Siddha
2009-03-30 13:55:30 -08:00
committed by Len Brown
parent 8e0ee43bc2
commit 7237d3de78
6 changed files with 191 additions and 5 deletions
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46
drivers/acpi/numa.c
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@@ -131,6 +131,21 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
#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 = 0x%x)\n",
@@ -180,8 +195,35 @@ static int __init acpi_parse_slit(struct acpi_table_header *table)
return 0;
}
void __init __attribute__ ((weak))
acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
{
printk(KERN_WARNING PREFIX
"Found unsupported x2apic [0x%08x] SRAT entry\n", pa->apic_id);
return;
}
static int __init
acpi_parse_processor_affinity(struct acpi_subtable_header * header,
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;
@@ -241,6 +283,8 @@ 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,