1 /* $NetBSD: remote-sl.h,v 1.3 2005/12/11 12:19:44 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)remote-sl.h 8.1 (Berkeley) 6/11/93 41 */ 42 43 /* 44 * These definitions are factored out into an include file so 45 * the kernel stub has access to them. 46 */ 47 #define FRAME_START 0xc1 /* Frame End */ 48 #define FRAME_END 0xc0 /* Frame End */ 49 #define FRAME_ESCAPE 0xdb /* Frame Esc */ 50 #define TRANS_FRAME_START 0xde /* transposed frame start */ 51 #define TRANS_FRAME_END 0xdc /* transposed frame esc */ 52 #define TRANS_FRAME_ESCAPE 0xdd /* transposed frame esc */ 53 54 /* 55 * Message limits. SL_MAXDATA is the maximum number of bytes that can 56 * be read or written. SL_BUFSIZE is the maximum amount of data that 57 * can be passed across the serial link. The actual MTU is two times 58 * the max message (since each byte might be escaped), plus the two 59 * framing bytes. We add two to the message length to account for the 60 * type byte and checksum. 61 */ 62 #define SL_MAXDATA 62 /* max data that can be read */ 63 #define SL_RPCSIZE (1 + SL_MAXDATA) /* errno byte + data */ 64 #define SL_MTU ((2 * (SL_RPCSIZE + 2) + 2)) 65