xref: /titanic_51/usr/src/uts/i86pc/i86hvm/io/pv_rtls.c (revision 1bf5e2ae883107708d4e1651562a348519be0e6a)
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  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 /*
27  * Fake rtls module. Prevents the real rtls driver from loading in
28  * a xen HVM domain so that xnf may operate instead.
29  */
30 
31 #include <sys/sunddi.h>
32 #include <sys/errno.h>
33 #include <sys/modctl.h>
34 
35 struct dev_ops pv_rtls_ops = {
36 	DEVO_REV,
37 	0,
38 	NULL,
39 	nulldev,
40 	nulldev,
41 	NULL,
42 	NULL,
43 	nodev,
44 	NULL,
45 	NULL
46 };
47 
48 /*
49  * Module linkage information for the kernel.
50  */
51 static struct modldrv modldrv = {
52 	&mod_driverops,
53 	"xVM rtls stub",
54 	&pv_rtls_ops
55 };
56 
57 static struct modlinkage modlinkage = {
58 	MODREV_1, (void *)&modldrv, NULL
59 };
60 
61 int
62 _init(void)
63 {
64 	return (mod_install(&modlinkage));
65 }
66 
67 int
68 _info(struct modinfo *modinfop)
69 {
70 	return (mod_info(&modlinkage, modinfop));
71 }
72 
73 int
74 _fini(void)
75 {
76 	return (EBUSY);
77 }
78