usr/src/sys/hp300/include/remote-sl.h

/*
 * Copyright (c) 1990 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Lawrence Berkeley Laboratory,
 * Berkeley, CA.  The name of the University may not be used to
 * endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * @(#) $Header: remote-sl.h,v 1.1 91/01/13 13:18:27 mccanne Exp $ (LBL)
 */

#define FRAME_END               0xc0            /* Frame End */
#define FRAME_ESCAPE            0xdb            /* Frame Esc */
#define TRANS_FRAME_END         0xdc            /* transposed frame end */
#define TRANS_FRAME_ESCAPE      0xdd            /* transposed frame esc */

/*
 * Error codes.
 */
#define EKGDB_CSUM      1
#define EKGDB_2BIG      2
#define EKGDB_RUNT      3

/*
 * Message limits.  SL_MAXMSG is the longest message that can be passed
 * down to the serial link.  The actual MTU is two times the max message
 * (since each byte might be escaped), plus the framing byte.  We add 2
 * to the message length to account for the type byte and check sum.
 */
#define SL_MAXMSG 64
#define SL_MTU ((2 * (SL_MAXMSG + 2) + 1))