[linux-2.6-block.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/hardirq.h>
#include <linux/export.h>
#include <asm/smp.h>
#include <asm/apic.h>
#include <asm/ipi.h>

#include <linux/acpi.h>

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 void _flat_send_IPI_mask(unsigned long mask, int vector)
{
	unsigned long flags;
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright 2004 James Cleverdon, IBM.
	3	* Subject to the GNU Public License, v.2
	4	*
f8d31193	5	* Flat APIC subarch code.
1da177e4 LT	6	*
	7	* Hacked for x86-64 by James Cleverdon from i386 architecture code by
	8	* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
	9	* James Cleverdon.
	10	*/
f19cccf3	11	#include <linux/errno.h>
1da177e4 LT	12	#include <linux/threads.h>
	13	#include <linux/cpumask.h>
	14	#include <linux/string.h>
	15	#include <linux/kernel.h>
	16	#include <linux/ctype.h>
0c81c746	17	#include <linux/hardirq.h>
186f4360	18	#include <linux/export.h>
1da177e4	19	#include <asm/smp.h>
7b6aa335	20	#include <asm/apic.h>
c1eeb2de	21	#include <asm/ipi.h>
1da177e4	22
8b48463f	23	#include <linux/acpi.h>
1b9b89e7	24
1a8880a1 SS	25	static struct apic apic_physflat;
	26	static struct apic apic_flat;
	27
	28	struct apic __read_mostly *apic = &apic_flat;
	29	EXPORT_SYMBOL_GPL(apic);
	30
983f91ff	31	static int flat_acpi_madt_oem_check(char oem_id, char oem_table_id)
1b9b89e7 YL	32	{
	33	return 1;
	34	}
	35
1da177e4 LT	36	/*
	37	* Set up the logical destination ID.
	38	*
	39	* Intel recommends to set DFR, LDR and TPR before enabling
	40	* an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
	41	* document number 292116). So here it goes...
	42	*/
9a0ebfbe	43	void flat_init_apic_ldr(void)
1da177e4 LT	44	{
	45	unsigned long val;
	46	unsigned long num, id;
	47
	48	num = smp_processor_id();
	49	id = 1UL << num;
eddfb4ed	50	apic_write(APIC_DFR, APIC_DFR_FLAT);
1da177e4 LT	51	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
1da177e4 LT	52	val \|= SET_APIC_LOGICAL_ID(id);
eddfb4ed	53	apic_write(APIC_LDR, val);
1da177e4 LT	54	}
1da177e4 LT	55
fe2f9546	56	static void _flat_send_IPI_mask(unsigned long mask, int vector)
1da177e4	57	{
1da177e4 LT	58	unsigned long flags;
1da177e4 LT	59