sys/arch/sparc/include/remote-sl.h

   1 /*      $NetBSD: remote-sl.h,v 1.2.66.3 2004/09/21 13:22:15 skrll 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))