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 1999 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/types.h>
28 #include <sys/byteorder.h>
29
30
31 /*
32 * functions to convert between host format and scsi format
33 */
34 void
scsi_htos_3byte(unchar * ap,ulong nav)35 scsi_htos_3byte(unchar *ap, ulong nav)
36 {
37 *(ushort *)ap = (ushort)(((nav & 0xff0000) >> 16) | (nav & 0xff00));
38 ap[2] = (unchar)nav;
39 }
40
41 void
scsi_htos_long(unchar * ap,ulong niv)42 scsi_htos_long(unchar *ap, ulong niv)
43 {
44 *(ulong *)ap = htonl(niv);
45 }
46
47 void
scsi_htos_short(unchar * ap,ushort nsv)48 scsi_htos_short(unchar *ap, ushort nsv)
49 {
50 *(ushort *)ap = htons(nsv);
51 }
52
53 ulong
scsi_stoh_3byte(unchar * ap)54 scsi_stoh_3byte(unchar *ap)
55 {
56 register ulong av = *(ulong *)ap;
57
58 return (((av & 0xff) << 16) | (av & 0xff00) | ((av & 0xff0000) >> 16));
59 }
60
61 ulong
scsi_stoh_long(ulong ai)62 scsi_stoh_long(ulong ai)
63 {
64 return (ntohl(ai));
65 }
66
67 ushort
scsi_stoh_short(ushort as)68 scsi_stoh_short(ushort as)
69 {
70 return (ntohs(as));
71 }
72