forked from Minki/linux
03b486322e
Make X86 SGI Ultraviolet support configurable. Saves about 13K of text size
on my modest config.
text data bss dec hex filename
6770537 1158680 694356 8623573 8395d5 vmlinux
6757492 1157664 694228 8609384 835e68 vmlinux.nouv
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
85 lines
1.9 KiB
C
85 lines
1.9 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/ipi.h>
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#include <asm/genapic.h>
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#include <asm/setup.h>
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extern struct genapic apic_flat;
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extern struct genapic apic_physflat;
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extern struct genapic apic_x2xpic_uv_x;
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extern struct genapic apic_x2apic_phys;
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extern struct genapic apic_x2apic_cluster;
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struct genapic __read_mostly *genapic = &apic_flat;
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static struct genapic *apic_probe[] __initdata = {
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#ifdef CONFIG_X86_UV
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&apic_x2apic_uv_x,
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#endif
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&apic_x2apic_phys,
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&apic_x2apic_cluster,
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&apic_physflat,
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NULL,
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};
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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 setup_apic_routing(void)
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{
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if (genapic == &apic_x2apic_phys || genapic == &apic_x2apic_cluster) {
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if (!intr_remapping_enabled)
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genapic = &apic_flat;
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}
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if (genapic == &apic_flat) {
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if (max_physical_apicid >= 8)
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genapic = &apic_physflat;
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printk(KERN_INFO "Setting APIC routing to %s\n", genapic->name);
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}
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if (x86_quirks->update_genapic)
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x86_quirks->update_genapic();
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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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__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
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}
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int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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int i;
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for (i = 0; apic_probe[i]; ++i) {
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if (apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) {
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genapic = apic_probe[i];
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printk(KERN_INFO "Setting APIC routing to %s.\n",
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genapic->name);
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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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