linux/arch/x86/mach-generic/bigsmp.c
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   1/*
   2 * APIC driver for "bigsmp" XAPIC machines with more than 8 virtual CPUs.
   3 * Drives the local APIC in "clustered mode".
   4 */
   5#define APIC_DEFINITION 1
   6#include <linux/threads.h>
   7#include <linux/cpumask.h>
   8#include <asm/smp.h>
   9#include <asm/mpspec.h>
  10#include <asm/genapic.h>
  11#include <asm/fixmap.h>
  12#include <asm/apicdef.h>
  13#include <linux/kernel.h>
  14#include <linux/smp.h>
  15#include <linux/init.h>
  16#include <linux/dmi.h>
  17#include <asm/mach-bigsmp/mach_apic.h>
  18#include <asm/mach-bigsmp/mach_apicdef.h>
  19#include <asm/mach-bigsmp/mach_ipi.h>
  20#include <asm/mach-default/mach_mpparse.h>
  21
  22static int dmi_bigsmp; /* can be set by dmi scanners */
  23
  24static int hp_ht_bigsmp(const struct dmi_system_id *d)
  25{
  26        printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
  27        dmi_bigsmp = 1;
  28        return 0;
  29}
  30
  31
  32static const struct dmi_system_id bigsmp_dmi_table[] = {
  33        { hp_ht_bigsmp, "HP ProLiant DL760 G2",
  34        { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  35        DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
  36        },
  37
  38        { hp_ht_bigsmp, "HP ProLiant DL740",
  39        { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  40        DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
  41        },
  42         { }
  43};
  44
  45
  46static int probe_bigsmp(void)
  47{
  48        if (def_to_bigsmp)
  49                dmi_bigsmp = 1;
  50        else
  51                dmi_check_system(bigsmp_dmi_table);
  52        return dmi_bigsmp;
  53}
  54
  55struct genapic apic_bigsmp = APIC_INIT("bigsmp", probe_bigsmp);
  56