xref: /illumos-gate/usr/src/uts/common/io/sad_conf.c (revision 03831d35)
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 1989-2002 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 /*
30  * Config dependent data structures for the Streams Administrative Driver
31  * (or "Ballad of the SAD Cafe").
32  */
33 #include <sys/types.h>
34 #include <sys/conf.h>
35 #include <sys/stream.h>
36 #include <sys/sad.h>
37 #include <sys/kmem.h>
38 
39 #ifndef	NSAD
40 #define	NSAD	16
41 #endif
42 
43 struct saddev *saddev;			/* sad device array */
44 int	sadcnt = NSAD;			/* number of sad devices */
45 
46 /*
47  * Auto-push structures.
48  */
49 #ifndef NAUTOPUSH
50 #define	NAUTOPUSH	32
51 #endif
52 struct autopush *autopush;
53 int	nautopush = NAUTOPUSH;
54 
55 void
56 sad_initspace(void)
57 {
58 	saddev = kmem_zalloc(sadcnt * sizeof (struct saddev), KM_SLEEP);
59 	autopush = kmem_zalloc(nautopush * sizeof (struct autopush), KM_SLEEP);
60 	strpcache = kmem_zalloc((strpmask + 1) * sizeof (struct autopush),
61 	    KM_SLEEP);
62 }
63