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Tip revision: 899e3ee404961a90b828ad527573aaaac39f0ab1 authored by Linus Torvalds on 18 October 2011, 04:06:23 UTC
Linux 3.1-rc10
Linux 3.1-rc10
Tip revision: 899e3ee
probe_64.c
/*
* Copyright 2004 James Cleverdon, IBM.
* Subject to the GNU Public License, v.2
*
* Generic APIC sub-arch probe layer.
*
* Hacked for x86-64 by James Cleverdon from i386 architecture code by
* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
* James Cleverdon.
*/
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/hardirq.h>
#include <linux/dmar.h>
#include <asm/smp.h>
#include <asm/apic.h>
#include <asm/ipi.h>
#include <asm/setup.h>
static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
{
return hard_smp_processor_id() >> index_msb;
}
/*
* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
*/
void __init default_setup_apic_routing(void)
{
struct apic **drv;
enable_IR_x2apic();
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->probe && (*drv)->probe()) {
if (apic != *drv) {
apic = *drv;
pr_info("Switched APIC routing to %s.\n",
apic->name);
}
break;
}
}
if (is_vsmp_box()) {
/* need to update phys_pkg_id */
apic->phys_pkg_id = apicid_phys_pkg_id;
}
}
/* Same for both flat and physical. */
void apic_send_IPI_self(int vector)
{
__default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
}
int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
if (apic != *drv) {
apic = *drv;
pr_info("Setting APIC routing to %s.\n",
apic->name);
}
return 1;
}
}
return 0;
}