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202379af84
Differential Revision: https://reviews.freebsd.org/D1955 Reviewed by: adrian, jhb, wblock Approved by: adrian, jhb
78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*-
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* Copyright (c) 1998 Nicolas Souchu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#ifndef __SMB_H
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#define __SMB_H
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#include <sys/ioccom.h>
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struct smbcmd {
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u_char cmd;
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u_char reserved;
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u_short op;
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union {
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char byte;
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char buf[2];
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short word;
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} wdata;
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union {
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char byte;
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char buf[2];
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short word;
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} rdata;
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int slave;
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char *wbuf; /* use wdata if NULL */
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int wcount;
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char *rbuf; /* use rdata if NULL */
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int rcount;
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};
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/*
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* SMBus spec 2.0 says block transfers may be at most 32 bytes.
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* We use SMBus for i2c as well, make the size limit something more
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* reasonable. Keep in mind that a char buf array is declared on the
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* kernel stack.
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*/
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#define SMB_MAXBLOCKSIZE 1024
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#define SMB_QUICK_WRITE _IOW('i', 1, struct smbcmd)
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#define SMB_QUICK_READ _IOW('i', 2, struct smbcmd)
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#define SMB_SENDB _IOW('i', 3, struct smbcmd)
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#define SMB_RECVB _IOWR('i', 4, struct smbcmd)
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#define SMB_WRITEB _IOW('i', 5, struct smbcmd)
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#define SMB_WRITEW _IOW('i', 6, struct smbcmd)
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#define SMB_READB _IOW('i', 7, struct smbcmd)
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#define SMB_READW _IOW('i', 8, struct smbcmd)
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#define SMB_PCALL _IOW('i', 9, struct smbcmd)
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#define SMB_BWRITE _IOW('i', 10, struct smbcmd)
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#define SMB_OLD_BREAD _IOW('i', 11, struct smbcmd)
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#define SMB_BREAD _IOWR('i', 11, struct smbcmd)
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#define SMB_TRANS _IOWR('i', 12, struct smbcmd)
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#endif
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