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 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/modctl.h>
28 #include <sys/sunddi.h>
29 #include <sys/sunndi.h>
30
31 /*
32 * The hvm_bootstrap misc module is installed in the i86hvm platform
33 * directly so it will only be loaded in HVM emulated environment.
34 */
35
36
37 /*
38 * hvmboot_rootconf() exists to force attach all xdf disk driver nodes
39 * before the pv cmdk disk driver comes along and tries to access any of
40 * these nodes (which usually happens when mounting the root disk device
41 * in an hvm environment). See the block comments at the top of pv_cmdk.c
42 * for more information about why this is necessary.
43 *
44 * hvmboot_rootconf() also force attaches xnf network driver nodes so
45 * that boot interface can be plumbed when booted via the network.
46 */
47 int
hvmboot_rootconf()48 hvmboot_rootconf()
49 {
50 dev_info_t *xpvd_dip;
51 major_t dev_major;
52
53 dev_major = ddi_name_to_major("xdf");
54 if (dev_major == (major_t)-1)
55 cmn_err(CE_PANIC, "unable to load xdf disk driver");
56
57 if (resolve_pathname("/xpvd", &xpvd_dip, NULL, NULL) != 0)
58 cmn_err(CE_PANIC, "unable to configure /xpvd nexus");
59
60 (void) ndi_devi_config_driver(xpvd_dip, 0, dev_major);
61
62 dev_major = ddi_name_to_major("xnf");
63 if (dev_major == (major_t)-1)
64 cmn_err(CE_PANIC, "unable to load xnf network driver");
65 (void) ndi_devi_config_driver(xpvd_dip, 0, dev_major);
66
67 ndi_rele_devi(xpvd_dip);
68 return (0);
69 }
70
71 static struct modlmisc modlmisc = {
72 &mod_miscops, "hvm_bootstrap misc module"
73 };
74
75 static struct modlinkage modlinkage = {
76 MODREV_1, (void *)&modlmisc, NULL
77 };
78
79 int
_info(struct modinfo * modinfop)80 _info(struct modinfo *modinfop)
81 {
82 return (mod_info(&modlinkage, modinfop));
83 }
84
85 int
_init()86 _init()
87 {
88 return (mod_install(&modlinkage));
89 }
90
91 int
_fini()92 _fini()
93 {
94 return (EBUSY);
95 }
96