Merge tag 'for-3.8' of git://openrisc.net/~jonas/linux

[deliverable/linux.git] / arch / x86 / kernel / apic / apic_flat_64.c

/*
 * Copyright 2004 James Cleverdon, IBM.
 * Subject to the GNU Public License, v.2
 *
 * Flat APIC subarch code.
 *
 * Hacked for x86-64 by James Cleverdon from i386 architecture code by
 * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
 * James Cleverdon.
 */
#include <linux/errno.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/hardirq.h>
#include <linux/module.h>
#include <asm/smp.h>
#include <asm/apic.h>
#include <asm/ipi.h>

#ifdef CONFIG_ACPI
#include <acpi/acpi_bus.h>
#endif

static struct apic apic_physflat;
static struct apic apic_flat;

struct apic __read_mostly *apic = &apic_flat;
EXPORT_SYMBOL_GPL(apic);

static int flat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
	return 1;
}

/*
 * Set up the logical destination ID.
 *
 * Intel recommends to set DFR, LDR and TPR before enabling
 * an APIC.  See e.g. "AP-388 82489DX User's Manual" (Intel
 * document number 292116).  So here it goes...
 */
void flat_init_apic_ldr(void)
{
	unsigned long val;
	unsigned long num, id;

	num = smp_processor_id();
	id = 1UL << num;
	apic_write(APIC_DFR, APIC_DFR_FLAT);
	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
	val |= SET_APIC_LOGICAL_ID(id);
	apic_write(APIC_LDR, val);
}

static inline void _flat_send_IPI_mask(unsigned long mask, int vector)
{
	unsigned long flags;