LXR linux/arch/x86/mach-generic/bigsmp.c

   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/mpspec.h>
   9#include <asm/genapic.h>
  10#include <asm/fixmap.h>
  11#include <asm/apicdef.h>
  12#include <linux/kernel.h>
  13#include <linux/init.h>
  14#include <linux/dmi.h>
  15#include <asm/bigsmp/apicdef.h>
  16#include <linux/smp.h>
  17#include <asm/bigsmp/apic.h>
  18#include <asm/bigsmp/ipi.h>
  19#include <asm/mach-default/mach_mpparse.h>
  20
  21static int dmi_bigsmp; /* can be set by dmi scanners */
  22
  23static int hp_ht_bigsmp(const struct dmi_system_id *d)
  24{
  25        printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
  26        dmi_bigsmp = 1;
  27        return 0;
  28}
  29
  30
  31static const struct dmi_system_id bigsmp_dmi_table[] = {
  32        { hp_ht_bigsmp, "HP ProLiant DL760 G2",
  33        { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  34        DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
  35        },
  36
  37        { hp_ht_bigsmp, "HP ProLiant DL740",
  38        { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
  39        DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
  40        },
  41         { }
  42};
  43
  44static cpumask_t vector_allocation_domain(int cpu)
  45{
  46        return cpumask_of_cpu(cpu);
  47}
  48
  49static int probe_bigsmp(void)
  50{
  51        if (def_to_bigsmp)
  52                dmi_bigsmp = 1;
  53        else
  54                dmi_check_system(bigsmp_dmi_table);
  55        return dmi_bigsmp;
  56}
  57
  58struct genapic apic_bigsmp = APIC_INIT("bigsmp", probe_bigsmp);
  59