/* $NetBSD: lapic.c,v 1.34 2008/04/16 16:06:52 cegger Exp $ */

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by RedBack Networks Inc.
 *
 * Author: Bill Sommerfeld
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lapic.c,v 1.34 2008/04/16 16:06:52 cegger Exp $");

#include "opt_xen.h"
#include "opt_ddb.h"
#include "opt_mpbios.h"		/* for MPDEBUG */
#include "opt_multiprocessor.h"
#include "opt_ntp.h"

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/timetc.h>

#include <uvm/uvm_extern.h>

#include <machine/cpu.h>
#include <machine/cpu_counter.h>
#include <machine/cpufunc.h>
#include <xen/vcpuvar.h>
#include <machine/pmap.h>
#include <machine/vmparam.h>

#include <hypervisor.h>

#include <machine/apicvar.h>
#include <machine/i82489reg.h>
#include <machine/i82489var.h>

/* Referenced from vector.S */
void	lapic_clockintr(void *, struct intrframe *);

void tsc_calibrate_cpu(struct cpu_info *ci)
{
	/* Xen takes care about cycle counter
	 * synchronization. Nothing to do.
	 */
}

uint32_t
lapic_cpu_number(void)
{
#ifdef VCPUOP_get_physid
	struct vcpu_get_physid cpu_id;
	int ret;

	ret = HYPERVISOR_vcpu_op(VCPUOP_get_physid, 0, &cpu_id);
	if (ret != 0) {
		return 0;
	}

	return xen_vcpu_physid_to_x86_apicid(cpu_id.phys_id);
#else
	printf("%s: WARNING: Xen 3.2.x or newer required to determine APIC ID\n",
		__func__);
	return 0;
#endif
}

void
lapic_enable(void)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

void
lapic_suspend(void)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

void
lapic_set_lvt(void)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

/*
 * Initialize fixed idt vectors for use by local apic.
 */
void
lapic_boot_init(paddr_t lapic_base)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

void
lapic_clockintr(void *arg, struct intrframe *frame)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

void
lapic_initclocks(void)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

void
lapic_calibrate_timer(struct cpu_info *ci)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
}

int
x86_ipi_init(int target)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
	return 0;
}

int
x86_ipi(int vec, int target, int dl)
{
	printf("%s: WARNING: not yet implemented\n", __func__);
	return 0;
}