7db971b235
Some subarchitectures (such as vSMP) need to slightly adjust the underlying APIC structure. Add an APIC post-initialization callback to 'struct x86_platform_ops' for this purpose and use it for adjusting the APIC structure on vSMP systems. Signed-off-by: Ido Yariv <ido@wizery.com> Acked-by: Shai Fultheim <shai@scalemp.com> Link: http://lkml.kernel.org/r/1338675095-27260-1-git-send-email-ido@wizery.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
/*
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* Copyright 2004 James Cleverdon, IBM.
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* Subject to the GNU Public License, v.2
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*
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* Generic APIC sub-arch probe layer.
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*
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* Hacked for x86-64 by James Cleverdon from i386 architecture code by
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* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
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* James Cleverdon.
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*/
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <linux/string.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/ctype.h>
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#include <linux/init.h>
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#include <linux/hardirq.h>
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#include <linux/dmar.h>
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#include <asm/smp.h>
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#include <asm/apic.h>
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#include <asm/ipi.h>
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#include <asm/setup.h>
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/*
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* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
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*/
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void __init default_setup_apic_routing(void)
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{
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struct apic **drv;
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enable_IR_x2apic();
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->probe && (*drv)->probe()) {
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if (apic != *drv) {
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apic = *drv;
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pr_info("Switched APIC routing to %s.\n",
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apic->name);
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}
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break;
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}
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}
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if (x86_platform.apic_post_init)
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x86_platform.apic_post_init();
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}
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/* Same for both flat and physical. */
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void apic_send_IPI_self(int vector)
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{
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__default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
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}
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int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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struct apic **drv;
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
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if (apic != *drv) {
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apic = *drv;
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pr_info("Setting APIC routing to %s.\n",
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apic->name);
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}
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return 1;
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}
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}
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return 0;
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}
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