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Annotation of sys/arch/vax/include/rsp.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: rsp.h,v 1.2 1997/05/29 00:04:50 niklas Exp $ */
                      2: /*     $NetBSD: rsp.h,v 1.1 1996/02/17 18:14:50 ragge Exp $ */
                      3: /*
                      4:  * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *      This product includes software developed at Ludd, University of
                     18:  *      Lule}, Sweden and its contributors.
                     19:  * 4. The name of the author may not be used to endorse or promote products
                     20:  *    derived from this software without specific prior written permission
                     21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     25:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     26:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     27:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     28:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     29:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     30:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     31:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32:  */
                     33:
                     34:
                     35: /*
                     36:  * The Radial Serial Protocol (RSP) that TU58 (DECtape II) uses
                     37:  * is a strange animal that is sent over serial lines.
                     38:  * Most packet types can match the struct rsp, but some can't (i.e.
                     39:  * data packets).
                     40:  * More about RSP can be read in Digital Peripherals Handbook, p. 92.
                     41:  */
                     42:
                     43: struct rsp {
                     44:        char    rsp_typ;        /* Packet type */
                     45:        char    rsp_sz;         /* Packet size */
                     46:        char    rsp_op;         /* Operation */
                     47:        char    rsp_mod;        /* Modifier */
                     48:        char    rsp_drv;        /* Tape drive number */
                     49:        char    rsp_sw;         /* Switches */
                     50:        char    rsp_xx1;        /* Unused, always zero */
                     51:        char    rsp_xx2;        /* Unused, always zero */
                     52:        short   rsp_cnt;        /* Byte count to transfer */
                     53:        short   rsp_blk;        /* Block number */
                     54:        short   rsp_sum;        /* Checksum of packet */
                     55: };
                     56:
                     57: /* Types of packets */
                     58: #define        RSP_TYP_DATA            001     /* DATA packet */
                     59: #define        RSP_TYP_COMMAND         002     /* COMMAND packet */
                     60: #define        RSP_TYP_INIT            004     /* INITIALIZE packet */
                     61: #define        RSP_TYP_BOOT            010     /* BOOTSTRAP packet (PDP11) */
                     62: #define        RSP_TYP_CONTINUE        020     /* CONTINUE packet */
                     63: #define        RSP_TYP_XOFF            023     /* XOFF packet */
                     64:
                     65: /* Operation types */
                     66: #define        RSP_OP_NOP              000     /* No operation */
                     67: #define        RSP_OP_RESET            001     /* Reset */
                     68: #define        RSP_OP_READ             002     /* Read data */
                     69: #define        RSP_OP_WRITE            003     /* Write data */
                     70: #define        RSP_OP_POS              005     /* Position tape */
                     71: #define        RSP_OP_DIAG             007     /* internal diagnose */
                     72: #define        RSP_OP_GSTAT            010     /* Get status */
                     73: #define        RSP_OP_SSTAT            011     /* Set status */
                     74: #define        RSP_OP_END              100     /* End packet */
                     75:
                     76: /* Modifier */
                     77: #define        RSP_MOD_VERIFY          001     /* Verify read data */
                     78: #define        RSP_MOD_OK              000     /* Success */
                     79: #define        RSP_MOD_RETR            001     /* Success w/ retries */
                     80: #define        RSP_MOD_FAIL            -1      /* Failed self-test */
                     81: #define        RSP_MOD_PART            -2      /* Partial operation */
                     82: #define        RSP_MOD_NET             -8      /* Non-existent tape drive */
                     83: #define        RSP_MOD_NOC             -9      /* No cartridge */
                     84: #define        RSP_MOD_WP              -11     /* Write protected */
                     85: #define        RSP_MOD_DERR            -17     /* Data error */
                     86: #define        RSP_MOD_SERR            -32     /* Seek error */
                     87: #define        RSP_MOD_STOP            -33     /* Motor stopped */
                     88: #define        RSP_MOD_INVAL           -48     /* Invalid opcode */
                     89: #define        RSP_MOD_INVBLK          -55     /* Invalid bloch number */
                     90: