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 * $FreeBSD$ 27 * 28 */ 29 #ifndef __SMB_H 30 #define __SMB_H 31 32 #include <sys/ioccom.h> 33 34 struct smbcmd { 35 u_char cmd; 36 u_char reserved; 37 u_short op; 38 union { 39 char byte; 40 char buf[2]; 41 short word; 42 } wdata; 43 union { 44 char byte; 45 char buf[2]; 46 short word; 47 } rdata; 48 int slave; 49 char *wbuf; /* use wdata if NULL */ 50 int wcount; 51 char *rbuf; /* use rdata if NULL */ 52 int rcount; 53 }; 54 55 /* 56 * SMBus spec 2.0 says block transfers may be at most 32 bytes. 57 * We use SMBus for i2c as well, make the size limit something more 58 * reasonable. Keep in mind that a char buf array is declared on the 59 * kernel stack. 60 */ 61 #define SMB_MAXBLOCKSIZE 1024 62 63 #define SMB_QUICK_WRITE _IOW('i', 1, struct smbcmd) 64 #define SMB_QUICK_READ _IOW('i', 2, struct smbcmd) 65 #define SMB_SENDB _IOW('i', 3, struct smbcmd) 66 #define SMB_RECVB _IOWR('i', 4, struct smbcmd) 67 #define SMB_WRITEB _IOW('i', 5, struct smbcmd) 68 #define SMB_WRITEW _IOW('i', 6, struct smbcmd) 69 #define SMB_READB _IOW('i', 7, struct smbcmd) 70 #define SMB_READW _IOW('i', 8, struct smbcmd) 71 #define SMB_PCALL _IOW('i', 9, struct smbcmd) 72 #define SMB_BWRITE _IOW('i', 10, struct smbcmd) 73 #define SMB_OLD_BREAD _IOW('i', 11, struct smbcmd) 74 #define SMB_BREAD _IOWR('i', 11, struct smbcmd) 75 #define SMB_TRANS _IOWR('i', 12, struct smbcmd) 76 77 #endif 78