xref: /titanic_50/usr/src/uts/i86pc/i86hvm/io/pv_rtls.c (revision dd52495f0d9ba8ff6d84921ec0500be837896554)
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 	NULL,
47 	ddi_quiesce_not_needed,		/* quiesce */
48 };
49 
50 /*
51  * Module linkage information for the kernel.
52  */
53 static struct modldrv modldrv = {
54 	&mod_driverops,
55 	"xVM rtls stub",
56 	&pv_rtls_ops
57 };
58 
59 static struct modlinkage modlinkage = {
60 	MODREV_1, (void *)&modldrv, NULL
61 };
62 
63 int
64 _init(void)
65 {
66 	return (mod_install(&modlinkage));
67 }
68 
69 int
70 _info(struct modinfo *modinfop)
71 {
72 	return (mod_info(&modlinkage, modinfop));
73 }
74 
75 int
76 _fini(void)
77 {
78 	return (EBUSY);
79 }
80