1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/promif.h>
30#include <sys/promimpl.h>
31
32/*
33 * This function is installed for both pre and post output during cpr to keep
34 * the early stages of the resuming kernel from accessing outside the nucleus
35 * mapping; we assert that the console is all powered up before it is installed
36 */
37static void
38null_outfunc(void)
39{
40}
41
42static promif_owrap_t nullwrapper =
43{
44	null_outfunc,
45	null_outfunc
46};
47
48static promif_owrap_t *wrapper = &nullwrapper;
49static promif_owrap_t pmwrapper;
50static promif_owrap_t *saved_wrapper;
51
52promif_owrap_t
53*promif_preout(void)
54{
55	promif_owrap_t *ow = wrapper;
56	(ow->preout)();
57	return (ow);
58}
59
60void
61promif_postout(promif_owrap_t *ow)
62{
63	(ow->postout)();
64}
65
66void
67prom_set_outfuncs(void (*pref)(void), void (*postf)(void))
68{
69	pmwrapper.preout = pref;
70	pmwrapper.postout = postf;
71	wrapper = &pmwrapper;
72}
73
74void
75prom_suspend_prepost(void)
76{
77	saved_wrapper = wrapper;
78	wrapper = &nullwrapper;
79}
80
81void
82prom_resume_prepost(void)
83{
84	wrapper = saved_wrapper;
85	saved_wrapper = NULL;
86}
87