Gitiles
Code Review Sign In
review.evervolv.com / android_kernel_oneplus_msm8996 / e89e896d31b11a51a54ddcd3f72a76bd286dd86c / . / arch / x86 / mach-generic / bigsmp.c
blob: 59d7717145590b4f70f7e75daad74bff953d8b3a [file] [log] [blame]
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]1/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]6#include <linux/threads.h>
7#include <linux/cpumask.h>
Andi Kleen874c4fe2006-09-26 10:52:26 +0200[diff] [blame]8#include <asm/smp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Jeff Garzik18552562007-10-03 15:15:40 -0400[diff] [blame]24static int hp_ht_bigsmp(const struct dmi_system_id *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]26 printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
27 dmi_bigsmp = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]28 return 0;
29}
30
31
Jeff Garzik18552562007-10-03 15:15:40 -0400[diff] [blame]32static const struct dmi_system_id bigsmp_dmi_table[] = {
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]33 { hp_ht_bigsmp, "HP ProLiant DL760 G2",
34 { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
35 DMI_MATCH(DMI_BIOS_VERSION, "P44-"),}
36 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]37
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]38 { hp_ht_bigsmp, "HP ProLiant DL740",
39 { DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
40 DMI_MATCH(DMI_BIOS_VERSION, "P47-"),}
41 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]42 { }
43};
44
45
William Lee Irwin IIIaf669c92007-05-23 13:58:23 -0700[diff] [blame]46static int probe_bigsmp(void)
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]47{
Venkatesh Pallipadi911a62d2005-09-03 15:56:31 -0700[diff] [blame]48 if (def_to_bigsmp)
Yinghai Lue0da3362008-06-08 18:29:22 -0700[diff] [blame]49 dmi_bigsmp = 1;
Venkatesh Pallipadi911a62d2005-09-03 15:56:31 -0700[diff] [blame]50 else
51 dmi_check_system(bigsmp_dmi_table);
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]52 return dmi_bigsmp;
53}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]54
Paolo Ciarrocchi637cba02008-02-20 00:18:52 +0100[diff] [blame]55struct genapic apic_bigsmp = APIC_INIT("bigsmp", probe_bigsmp);