1/*-
2 * Copyright (c) 1998 Nicolas Souchu
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/smbus/smb.h 162234 2006-09-11 20:52:41Z jhb $
27 *
28 */
29#ifndef __SMB_H
30#define __SMB_H
31
32#include <sys/ioccom.h>
33
34struct smbcmd {
35 char cmd;
36 int count;
37 u_char slave;
38 union {
39 char byte;
40 short word;
41
42 char *byte_ptr;
43 short *word_ptr;
44
45 struct {
46 short sdata;
47 short *rdata;
48 } process;
49 } data;
50};
51
52/*
53 * SMBus spec 2.0 says block transfers may be at most 32 bytes.
54 */
55#define SMB_MAXBLOCKSIZE 32
56
57#define SMB_QUICK_WRITE _IOW('i', 1, struct smbcmd)
58#define SMB_QUICK_READ _IOW('i', 2, struct smbcmd)
59#define SMB_SENDB _IOW('i', 3, struct smbcmd)
60#define SMB_RECVB _IOWR('i', 4, struct smbcmd)
61#define SMB_WRITEB _IOW('i', 5, struct smbcmd)
62#define SMB_WRITEW _IOW('i', 6, struct smbcmd)
63#define SMB_READB _IOW('i', 7, struct smbcmd)
64#define SMB_READW _IOW('i', 8, struct smbcmd)
65#define SMB_PCALL _IOW('i', 9, struct smbcmd)
66#define SMB_BWRITE _IOW('i', 10, struct smbcmd)
67#define SMB_OLD_BREAD _IOW('i', 11, struct smbcmd)
68#define SMB_BREAD _IOWR('i', 11, struct smbcmd)
69
70#endif