bigsmp.c

linux 内核源代码

/* 
 * APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs.
 * Drives the local APIC in "clustered mode".
 */
#define APIC_DEFINITION 1
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <asm/smp.h>
#include <asm/mpspec.h>
#include <asm/genapic.h>
#include <asm/fixmap.h>
#include <asm/apicdef.h>
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <asm/mach-bigsmp/mach_apic.h>
#include <asm/mach-bigsmp/mach_apicdef.h>
#include <asm/mach-bigsmp/mach_ipi.h>
#include <asm/mach-default/mach_mpparse.h>

static int dmi_bigsmp; /* can be set by dmi scanners */

static int hp_ht_bigsmp(const struct dmi_system_id *d)
{
#ifdef CONFIG_X86_GENERICARCH
	printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
	dmi_bigsmp = 1;
#endif
	return 0;
}


static const struct dmi_system_id bigsmp_dmi_table[] = {
	{ hp_ht_bigsmp, "HP ProLiant DL760 G2", {
		DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
		DMI_MATCH(DMI_BIOS_VERSION, "P44-"),
	}},

	{ hp_ht_bigsmp, "HP ProLiant DL740", {
		DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
		DMI_MATCH(DMI_BIOS_VERSION, "P47-"),
	 }},
	 { }
};


static int probe_bigsmp(void)
{ 
	if (def_to_bigsmp)
        	dmi_bigsmp = 1;
	else
		dmi_check_system(bigsmp_dmi_table);
	return dmi_bigsmp; 
} 

struct genapic apic_bigsmp = APIC_INIT("bigsmp", probe_bigsmp);