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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 1999-2000 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /*
28 * s1394.c
29 * 1394 Services Layer Initialization and Cleanup Routines
30 * The routines do all initialization and cleanup for the Sevices Layer
31 */
32
33 #include <sys/conf.h>
34 #include <sys/ddi.h>
35 #include <sys/sunddi.h>
36 #include <sys/types.h>
37 #include <sys/kmem.h>
38 #include <sys/1394/t1394.h>
39 #include <sys/1394/s1394.h>
40 #include <sys/1394/h1394.h>
41
42 /* Driver State Pointer */
43 s1394_state_t *s1394_statep;
44
45 /* Module Driver Info */
46 static struct modlmisc s1394_modlmisc = {
47 &mod_miscops,
48 "IEEE 1394 Services Library 1.0"
49 };
50
51 /* Module Linkage */
52 static struct modlinkage s1394_modlinkage = {
53 MODREV_1,
54 &s1394_modlmisc,
55 NULL
56 };
57
58 static int s1394_init();
59 static void s1394_fini();
60
61 int
_init()62 _init()
63 {
64 int status;
65
66 status = s1394_init();
67 if (status != 0) {
68 return (status);
69 }
70
71 status = mod_install(&s1394_modlinkage);
72 return (status);
73 }
74
75 int
_info(struct modinfo * modinfop)76 _info(struct modinfo *modinfop)
77 {
78 return (mod_info(&s1394_modlinkage, modinfop));
79 }
80
81 int
_fini()82 _fini()
83 {
84 int status;
85
86 status = mod_remove(&s1394_modlinkage);
87 if (status != 0) {
88 return (status);
89 }
90
91 s1394_fini();
92 return (status);
93 }
94
95 /*
96 * s1394_init()
97 * initializes the 1394 Software Framework's structures, i.e. the HAL list
98 * and associated mutex.
99 */
100 static int
s1394_init()101 s1394_init()
102 {
103 s1394_statep = kmem_zalloc(sizeof (s1394_state_t), KM_SLEEP);
104
105 s1394_statep->hal_head = NULL;
106 s1394_statep->hal_tail = NULL;
107 mutex_init(&s1394_statep->hal_list_mutex, NULL, MUTEX_DRIVER, NULL);
108
109 return (0);
110 }
111
112 /*
113 * s1394_fini()
114 * cleans up the 1394 Software Framework's structures that were allocated
115 * in s1394_init().
116 */
117 static void
s1394_fini()118 s1394_fini()
119 {
120 mutex_destroy(&s1394_statep->hal_list_mutex);
121
122 kmem_free(s1394_statep, sizeof (s1394_state_t));
123 }
124