hvm_bootstrap.c revision 6451:ab21c2538653 
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 2008 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/modctl.h>
30#include <sys/sunddi.h>
31#include <sys/sunndi.h>
32
33/*
34 * The hvm_bootstrap misc module is installed in the i86hvm platform
35 * directly so it will only be loaded in HVM emulated environment.
36 */
37
38
39/*
40 * hvmboot_rootconf() exists to force attach all xdf disk driver nodes
41 * before the pv cmdk disk driver comes along and tries to access any of
42 * these nodes (which usually happens when mounting the root disk device
43 * in an hvm environment).  See the block comments at the top of pv_cmdk.c
44 * for more information about why this is necessary.
45 */
46int
47hvmboot_rootconf()
48{
49	dev_info_t	*xpvd_dip;
50	major_t		xdf_major;
51
52	xdf_major = ddi_name_to_major("xdf");
53	if (xdf_major == (major_t)-1)
54		cmn_err(CE_PANIC, "unable to load xdf disk driver");
55
56	if (resolve_pathname("/xpvd", &xpvd_dip, NULL, NULL) != 0)
57		cmn_err(CE_PANIC, "unable to configure /xpvd nexus");
58
59	(void) ndi_devi_config_driver(xpvd_dip, 0, xdf_major);
60
61	ndi_rele_devi(xpvd_dip);
62	return (0);
63}
64
65static struct modlmisc modlmisc = {
66	&mod_miscops, "hvm_bootstrap misc module"
67};
68
69static struct modlinkage modlinkage = {
70	MODREV_1, (void *)&modlmisc, NULL
71};
72
73int
74_info(struct modinfo *modinfop)
75{
76	return (mod_info(&modlinkage, modinfop));
77}
78
79int
80_init()
81{
82	return (mod_install(&modlinkage));
83}
84
85int
86_fini()
87{
88	return (EBUSY);
89}
90