rsp.h

Macros

TUF_CMD           X
TUF_CONT          X
TUF_DATA          X
TUF_INITF         X
TUF_XOFF          X
TUMD_WRV          X
TUOP_DIAGNOSE     X
TUOP_END          X
TUOP_INIT         X
TUOP_NOOP         X
TUOP_READ         X
TUOP_SEEK         X
TUOP_WRITE        X
TUSW_MRSP         X
TUS_CHKERR        X
TUS_GET           X
TUS_GETC          X
TUS_GETD          X
TUS_GETH          X
TUS_IDLE          X
TUS_INIT1         X
TUS_INIT2         X
TUS_NSTATES       X
TUS_RCVERR        X
TUS_SENDC         X
TUS_SENDD         X
TUS_SENDH         X
TUS_SENDR         X
TUS_SENDW         X
TUS_WAIT          X
printstate        X

struct's

packet            X

   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:  *	@(#)rsp.h	7.1 (Berkeley) 6/5/86
   7:  */
   8: 
   9: /*
  10:  * TU58 transfer protocol constants and data structures
  11:  */
  12: 
  13: /*
  14:  * Structure of a command packet
  15:  */
  16: struct packet {
  17:     u_char  pk_flag;    /* indicates packet type (cmd, data, etc.) */
  18:     u_char  pk_mcount;  /* length of packet (bytes) */
  19:     u_char  pk_op;      /* operation to perform (read, write, etc.) */
  20:     u_char  pk_mod;     /* modifier for op or returned status */
  21:     u_char  pk_unit;    /* unit number */
  22:     u_char  pk_sw;      /* switches */
  23:     u_short pk_seq;     /* sequence number, always zero */
  24:     u_short pk_count;   /* requested byte count for read or write */
  25:     u_short pk_block;   /* block number for read, write, or seek */
  26:     u_short pk_chksum;  /* checksum, by words with end around carry */
  27: };
  28: 
  29: /*
  30:  * States
  31:  */
  32: #define TUS_INIT1   0   /* sending nulls */
  33: #define TUS_INIT2   1   /* sending inits */
  34: #define TUS_IDLE    2   /* initialized, no transfer in progress */
  35: #define TUS_SENDH   3   /* sending header */
  36: #define TUS_SENDD   4   /* sending data */
  37: #define TUS_SENDC   5   /* sending checksum */
  38: #define TUS_SENDR   6   /* sending read command packet */
  39: #define TUS_SENDW   7   /* sending write command packet */
  40: #define TUS_GETH    8   /* reading header */
  41: #define TUS_GETD    9   /* reading data */
  42: #define TUS_GETC    10  /* reading checksum */
  43: #define TUS_GET     11  /* reading an entire packet */
  44: #define TUS_WAIT    12  /* waiting for continue */
  45: #define TUS_RCVERR  13  /* receiver error in pseudo DMA routine */
  46: #define TUS_CHKERR  14  /* checksum error in pseudo DMA routine */
  47: 
  48: #define TUS_NSTATES 15
  49: 
  50: #define printstate(state) \
  51:     if ((state) < TUS_NSTATES) \
  52:         printf("%s", tustates[(state)]); \
  53:     else \
  54:         printf("%d", (state));
  55: 
  56: /*
  57:  * Packet Flags
  58:  */
  59: #define TUF_DATA    1       /* data packet */
  60: #define TUF_CMD     2       /* command packet */
  61: #define TUF_INITF   4       /* initialize */
  62: #define TUF_CONT    020     /* continue */
  63: #define TUF_XOFF    023     /* flow control */
  64: 
  65: /*
  66:  * Op Codes
  67:  */
  68: #define TUOP_NOOP   0       /* no operation */
  69: #define TUOP_INIT   1       /* initialize */
  70: #define TUOP_READ   2       /* read block */
  71: #define TUOP_WRITE  3       /* write block */
  72: #define TUOP_SEEK   5       /* seek to block */
  73: #define TUOP_DIAGNOSE   7       /* run micro-diagnostics */
  74: #define TUOP_END    0100        /* end packet */
  75: 
  76: /*
  77:  * Mod Flags
  78:  */
  79: #define TUMD_WRV        1               /* write with read verify */
  80: 
  81: /*
  82:  * Switches
  83:  */
  84: #define TUSW_MRSP   010     /* use Modified RSP */