sys/arch/vax/include/rsp.h

   1 /*      $NetBSD: rsp.h,v 1.1 1996/02/17 18:14:50 ragge Exp $ */
   2 /*
   3  * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed at Ludd, University of
  17  *      Lule}, Sweden and its contributors.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33
  34 /*
  35  * The Radial Serial Protocol (RSP) that TU58 (DECtape II) uses
  36  * is a strange animal that is sent over serial lines.
  37  * Most packet types can match the struct rsp, but some can't (i.e.
  38  * data packets).
  39  * More about RSP can be read in Digital Peripherals Handbook, p. 92.
  40  */
  41
  42 struct rsp {
  43         char    rsp_typ;        /* Packet type */
  44         char    rsp_sz;         /* Packet size */
  45         char    rsp_op;         /* Operation */
  46         char    rsp_mod;        /* Modifier */
  47         char    rsp_drv;        /* Tape drive number */
  48         char    rsp_sw;         /* Switches */
  49         char    rsp_xx1;        /* Unused, always zero */
  50         char    rsp_xx2;        /* Unused, always zero */
  51         short   rsp_cnt;        /* Byte count to transfer */
  52         short   rsp_blk;        /* Block number */
  53         short   rsp_sum;        /* Checksum of packet */
  54 };
  55
  56 /* Types of packets */
  57 #define RSP_TYP_DATA            001     /* DATA packet */
  58 #define RSP_TYP_COMMAND         002     /* COMMAND packet */
  59 #define RSP_TYP_INIT            004     /* INITIALIZE packet */
  60 #define RSP_TYP_BOOT            010     /* BOOTSTRAP packet (PDP11) */
  61 #define RSP_TYP_CONTINUE        020     /* CONTINUE packet */
  62 #define RSP_TYP_XOFF            023     /* XOFF packet */
  63
  64 /* Operation types */
  65 #define RSP_OP_NOP              000     /* No operation */
  66 #define RSP_OP_RESET            001     /* Reset */
  67 #define RSP_OP_READ             002     /* Read data */
  68 #define RSP_OP_WRITE            003     /* Write data */
  69 #define RSP_OP_POS              005     /* Position tape */
  70 #define RSP_OP_DIAG             007     /* internal diagnose */
  71 #define RSP_OP_GSTAT            010     /* Get status */
  72 #define RSP_OP_SSTAT            011     /* Set status */
  73 #define RSP_OP_END              0100    /* End packet */
  74
  75 /* Modifier */
  76 #define RSP_MOD_VERIFY          001     /* Verify read data */
  77 #define RSP_MOD_OK              000     /* Success */
  78 #define RSP_MOD_RETR            001     /* Success w/ retries */
  79 #define RSP_MOD_FAIL            -1      /* Failed self-test */
  80 #define RSP_MOD_PART            -2      /* Partial operation */
  81 #define RSP_MOD_NET             -8      /* Non-existent tape drive */
  82 #define RSP_MOD_NOC             -9      /* No cartridge */
  83 #define RSP_MOD_WP              -11     /* Write protected */
  84 #define RSP_MOD_DERR            -17     /* Data error */
  85 #define RSP_MOD_SERR            -32     /* Seek error */
  86 #define RSP_MOD_STOP            -33     /* Motor stopped */
  87 #define RSP_MOD_INVAL           -48     /* Invalid opcode */
  88 #define RSP_MOD_INVBLK          -55     /* Invalid bloch number */
  89