1/*-
2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org>
3 * Copyright (c) 1996, by Steve Passe
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. The name of the developer may NOT be used to endorse or promote products
12 *    derived from this software without specific prior written permission.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/bus.h>
32#include <sys/kernel.h>
33
34#include <vm/vm.h>
35#include <vm/vm_param.h>
36#include <vm/pmap.h>
37
38#include <machine/frame.h>
39#include <machine/intr_machdep.h>
40#include <machine/apicvar.h>
41
42#include <xen/hypervisor.h>
43#include <xen/xen-os.h>
44#include <machine/smp.h>
45#include <xen/interface/vcpu.h>
46
47
48static int	mptable_probe(void);
49static int	mptable_probe_cpus(void);
50static void	mptable_register(void *dummy);
51static int	mptable_setup_local(void);
52static int	mptable_setup_io(void);
53
54static struct apic_enumerator mptable_enumerator = {
55	"MPTable",
56	mptable_probe,
57	mptable_probe_cpus,
58	mptable_setup_local,
59	mptable_setup_io
60};
61
62static int
63mptable_probe(void)
64{
65
66	return (-100);
67}
68
69static int
70mptable_probe_cpus(void)
71{
72	int i, rc;
73
74	for (i = 0; i < MAXCPU; i++) {
75		rc = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL);
76		if (rc >= 0)
77			cpu_add(i, (i == 0));
78	}
79
80	return (0);
81}
82
83/*
84 * Initialize the local APIC on the BSP.
85 */
86static int
87mptable_setup_local(void)
88{
89
90	PCPU_SET(apic_id, 0);
91	PCPU_SET(vcpu_id, 0);
92	return (0);
93}
94
95static int
96mptable_setup_io(void)
97{
98
99	return (0);
100}
101
102static void
103mptable_register(void *dummy __unused)
104{
105
106	apic_register_enumerator(&mptable_enumerator);
107}
108SYSINIT(mptable_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, mptable_register,
109    NULL);
110