3ebb6d2951
Previously, those ioctls were defined as 'in' only, so rdata.byte and rdata.word were never updated in the userland. The read data went only to rbuf if it was provided. Thus, consumers were forced to always use it. Now the ioctls are marked as in-out. Compatibility handlers are provided for old ioctls. PR: 213481 Reported by: Lewis Donzis <lew@perftech.com> MFC after: 2 weeks Relnotes: maybe Differential Revision: https://reviews.freebsd.org/D8430
74 lines
2.4 KiB
C
74 lines
2.4 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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*/
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#define SMB_MAXBLOCKSIZE 32
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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 _IOWR('i', 7, struct smbcmd)
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#define SMB_READW _IOWR('i', 8, struct smbcmd)
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#define SMB_PCALL _IOWR('i', 9, struct smbcmd)
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#define SMB_BWRITE _IOW('i', 10, struct smbcmd)
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#define SMB_BREAD _IOWR('i', 11, struct smbcmd)
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#define SMB_OLD_TRANS _IOWR('i', 12, struct smbcmd)
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#endif
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