497c9a195d
so we can merge io_apic_32.c and io_apic_64.c v2: Use cpu_online_map as target cpus for bigsmp, just like 64-bit is doing. Also remove some unused TARGET_CPUS macro. v3: need to check if desc is null in smp_irq_move_cleanup also migration needs to reset vector too, so copy __target_IO_APIC_irq from 64bit. (the duplication will go away once the two files are unified.) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
|
|
* 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/mpspec.h>
|
|
#include <asm/genapic.h>
|
|
#include <asm/fixmap.h>
|
|
#include <asm/apicdef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/dmi.h>
|
|
#include <asm/bigsmp/apicdef.h>
|
|
#include <linux/smp.h>
|
|
#include <asm/bigsmp/apic.h>
|
|
#include <asm/bigsmp/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)
|
|
{
|
|
printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
|
|
dmi_bigsmp = 1;
|
|
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 cpumask_t vector_allocation_domain(int cpu)
|
|
{
|
|
return cpumask_of_cpu(cpu);
|
|
}
|
|
|
|
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);
|