2.11BSD#431 - /usr/src/sys/vaxif/if_dmc.h

   1: /*
   2:  * Copyright (c) 1982, 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)if_dmc.h	7.1 (Berkeley) 6/5/86
   7:  */
   8: 
   9: /*
  10:  * DMC-11 Interface
  11:  */
  12: 
  13: struct dmcdevice {
  14:         char    bsel0;
  15:     char    bsel1;
  16:     char    bsel2;
  17:     char    bsel3;
  18:     short   sel4;
  19:     short   sel6;
  20: };
  21: 
  22: /*
  23:  * dmc software packet encapsulation.  This allows the dmc
  24:  * link to be multiplexed among several protocols.
  25:  * The first eight bytes of the dmc header are garbage,
  26:  * since on a vax the uba has been known to mung these
  27:  * bytes.  The next two bytes encapsulate packet type.
  28:  */
  29: struct dmc_header {
  30:     char    dmc_buf[8]; /* space for uba on vax */
  31:     short   dmc_type;   /* encapsulate packet type */
  32: };
  33: 
  34: /* packet types */
  35: #define DMC_IPTYPE  1
  36: #define DMC_TRAILER 2
  37: #define DMC_NTRAILER    16
  38: 
  39: /*
  40:  * DMCMTU includes space for data (1024) +
  41:  * protocol header (256) + trailer descriptor (4).
  42:  * The software link encapsulation header (dmc_header)
  43:  * is handled separately.
  44:  */
  45: #define DMCMTU  1284
  46: 
  47: #define RDYSCAN 16  /* loop delay for RDYI after RQI */
  48: 
  49: /* defines for bsel0 */
  50: #define DMC_BACCI   0
  51: #define DMC_CNTLI   1
  52: #define DMC_PERR    2
  53: #define DMC_BASEI   3
  54: #define DMC_WRITE   0       /* transmit block */
  55: #define DMC_READ    4       /* read block */
  56: #define DMC_RQI     0040        /* port request bit */
  57: #define DMC_IEI     0100        /* enable input interrupts */
  58: #define DMC_RDYI    0200        /* port ready */
  59: #define DMC0BITS    "\10\8RDI\7IEI\6RQI"
  60: 
  61: /* defines for bsel1 */
  62: #define DMC_MCLR    0100        /* DMC11 Master Clear */
  63: #define DMC_RUN     0200        /* clock running */
  64: #define DMC1BITS    "\10\8RUN\7MCLR"
  65: 
  66: /* defines for bsel2 */
  67: #define DMC_BACCO   0
  68: #define DMC_CNTLO   1
  69: #define DMC_OUX     0       /* transmit block */
  70: #define DMC_OUR     4       /* read block */
  71: #define DMC_IEO     0100        /* enable output interrupts */
  72: #define DMC_RDYO    0200        /* port available */
  73: #define DMC2BITS    "\10\8RDO\7IEO"
  74: 
  75: /* defines for CNTLI mode */
  76: #define DMC_HDPLX   02000       /* half duplex DDCMP operation */
  77: #define DMC_SEC     04000       /* half duplex secondary station */
  78: #define DMC_MAINT   00400       /* enter maintenance mode */
  79: 
  80: /* defines for BACCI/O and BASEI mode */
  81: #define DMC_XMEM    0140000     /* xmem bit position */
  82: #define DMC_CCOUNT  0037777     /* character count mask */
  83: #define DMC_RESUME  0002000     /* resume (BASEI only) */
  84: 
  85: /* defines for CNTLO */
  86: #define DMC_CNTMASK 01777
  87: 
  88: #define DMC_DATACK  01
  89: #define DMC_TIMEOUT 02
  90: #define DMC_NOBUFS  04
  91: #define DMC_MAINTREC    010
  92: #define DMC_LOSTDATA    020
  93: #define DMC_DISCONN 0100
  94: #define DMC_START   0200
  95: #define DMC_NEXMEM  0400
  96: #define DMC_ERROR   01000
  97: 
  98: #define DMC_FATAL (DMC_ERROR|DMC_NEXMEM|DMC_START|DMC_LOSTDATA|DMC_MAINTREC)
  99: #define CNTLO_BITS  \
 100:    "\10\12ERROR\11NEXMEM\10START\7DISC\5LSTDATA\4MAINT\3NOBUF\2TIMEO\1DATACK"

Defined struct's

Defined macros