mp_machdep.c revision 80729 
1/*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
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 *	$FreeBSD: head/sys/ia64/ia64/mp_machdep.c 80729 2001-07-31 14:35:36Z jhb $
27 */
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/ktr.h>
32#include <sys/proc.h>
33#include <sys/lock.h>
34#include <sys/malloc.h>
35#include <sys/mutex.h>
36#include <sys/kernel.h>
37#include <sys/pcpu.h>
38#include <sys/smp.h>
39#include <sys/sysctl.h>
40
41#include <machine/atomic.h>
42#include <machine/globaldata.h>
43#include <machine/pmap.h>
44#include <machine/clock.h>
45
46int			boot_cpu_id;
47
48int
49cpu_mp_probe()
50{
51	all_cpus = 1;	/* Needed for MB init code */
52	return (0);
53}
54
55void
56cpu_mp_start()
57{
58}
59
60void
61cpu_mp_announce()
62{
63}
64
65/*
66 * send an IPI to a set of cpus.
67 */
68void
69ipi_selected(u_int32_t cpus, u_int64_t ipi)
70{
71
72	CTR2(KTR_SMP, "ipi_selected: cpus: %x ipi: %lx", cpus, ipi);
73	panic(__func__": not implemented");
74}
75
76/*
77 * send an IPI INTerrupt containing 'vector' to all CPUs, including myself
78 */
79void
80ipi_all(u_int64_t ipi)
81{
82	ipi_selected(all_cpus, ipi);
83}
84
85/*
86 * send an IPI to all CPUs EXCEPT myself
87 */
88void
89ipi_all_but_self(u_int64_t ipi)
90{
91	ipi_selected(PCPU_GET(other_cpus), ipi);
92}
93
94/*
95 * send an IPI to myself
96 */
97void
98ipi_self(u_int64_t ipi)
99{
100	ipi_selected(1 << PCPU_GET(cpuid), ipi);
101}
102