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

   1: /*	@(#)if_hdhreg.h	7.1 (Berkeley) 6/5/86 */
   2: 
   3: 
   4: /* $Header$ */
   5: 
   6: /*
   7:  * ACC IF-11/HDH interface
   8:  */
   9: 
  10: struct hdhregs {            /* device registers */
  11:     u_short csr;            /* control and status register */
  12:     u_char  iochn;          /* logical channel */
  13:     u_char  ioadx;          /* address extension (A16,A17) */
  14:     u_short ioadl;          /* buffer address (A0-A15) */
  15:     u_short iocnt;          /* byte count */
  16:     u_char  iofcn;          /* UMC funciton code */
  17:     u_char  iosbf;          /* UMC subfunction code */
  18:     u_char  ioini;          /* comm regs valid flag */
  19:     u_char  staack;         /* interrupt acknowledge flag */
  20:     u_char  ionmi;          /* NMI routine active flag */
  21:     u_char  ioxfrg;         /* UMR transfer grant flag */
  22:     u_char  stachn;         /* interrupt channel number */
  23:     u_char  statyp;         /* interrupt type code */
  24:     u_char  stacc;          /* completion function code */
  25:     u_char  stacs;          /* completion subfunction code */
  26:     u_short stacnt;         /* completion byte count */
  27: };
  28: 
  29: /* defines for CSR */
  30: 
  31: #define HDH_UER     0100000     /* UMC error condition */
  32: #define HDH_NXM     0040000     /* non-existent memory error */
  33: #define HDH_PER     0020000     /* UNIBUS parity error */
  34: #define HDH_ZRUN    0010000     /* Z80 running */
  35: #define HDH_ZGO     0004000     /* Z80 not in wait state */
  36: #define HDH_MBLK    0000200     /* memory swap state (0=main, 1=srv) */
  37: #define HDH_SRV     0000100     /* select UMC service memory */
  38: #define HDH_MAIN    0000040     /* select UMC main memory */
  39: #define HDH_DMA     0000020     /* DMA enable */
  40: #define HDH_WRT     0000010     /* DMA write enable */
  41: #define HDH_IEN     0000004     /* interrupt enable */
  42: #define HDH_RST     0000002     /* reset */
  43: #define HDH_NMI     0000001     /* cause NMI */
  44: 
  45: #define HDH_BITS \
  46: "\10\20UER\17NXM\16PER\15ZRUN\14ZGO\10MBLK\7SRV\6MAIN\5DMA\4WRT\3IEN\2RST\1NMI"
  47: 
  48: /* start i/o function code definitions */
  49: 
  50: #define HDHWRT      0   /* write to if-11 */
  51: #define HDHRDB      1   /* read from if-11 */
  52: #define HDHSTR      2   /* stream flag */
  53: #define HDHEOS      6   /* end of stream flag */
  54: #define HDHABT      8   /* abort flag */
  55: #define HDHUMR      16  /* UMR protocol flag */
  56: 
  57: /* interrupt type definitions */
  58: 
  59: #define HDHSACK     0   /* start i/o ack */
  60: #define HDHDONE     1   /* i/o completion */
  61: #define HDHXREQ     2   /* UMR protocol transfer request */
  62: 
  63: /* i/o completion codes */
  64: 
  65: #define HDHIOCOK    0001    /* successful completion */
  66: #define HDHIOCOKP   0002    /* successful completion, more data pending */
  67: #define HDHIOCABT   0361    /* i/o aborted */
  68: #define HDHIOCERR   0321    /* program error */
  69: #define HDHIOCOVR   0363    /* overrun error */
  70: #define HDHIOCUBE   0374    /* non-existant memory or unibus error */
  71: 
  72: /* UMR protocol transfer grant code definitions */
  73: 
  74: #define HDHXEVN     1   /* start with even address */
  75: #define HDHXODD     2   /* start with odd address */
  76: #define HDHNUMR     4   /* non-UMR transfer */
  77: #define HDHXABT     8   /* abort transfer */
  78: 
  79: /* HDH supervisor request code definitions */
  80: #define HDHINIT     0x42    /* SYSINIT opcode */
  81: 
  82: #define HDHSUP      0xf0    /* supervisor HDH status/line control prefix */
  83: #define HDHIMP      0x400   /* IMP line up modifier */
  84: #define HDHREFL     0x800   /* reflect mode modifier */
  85: #define HDHINLB     0x1000  /* internal loopback modifier */
  86: #define HDHEXLP     0x2000  /* external loopback modifier */
  87: #define HDHRQST     (HDHSUP+0x0000) /* line status request */
  88: #define HDHRQUP     (HDHSUP+0x0100) /* line up request */
  89: #define HDHRQDN     (HDHSUP+0x0200) /* line down request */
  90: 
  91: /* HDH supervisor reply code definitions */
  92: 
  93: #define HDHIACK     (HDHSUP+0x4200) /* line init ack */
  94: #define HDHLNUP     (HDHSUP+0x0100) /* line up reply */
  95: #define HDHLNDN     (HDHSUP+0x0200) /* line down reply */
  96: #define HDHLNACK    (HDHSUP+0x0300) /* ack line up request (but line is down now) */
  97: #define HDHTIMO     (HDHSUP+0x0400) /* line timeout */
  98: #define HDHLOOP     (HDHSUP+0x0500) /* loopback message */
  99: #define HDHDTERR    (HDHSUP+0x0600) /* host data error detected */
 100: #define HDHSQRCV    (HDHSUP+0x0700) /* HDLC sequence error detected by IMP */
 101: #define HDHSQERR    (HDHSUP+0x0800) /* HDLC sequence error detected by if-11 */

Defined struct's

Defined macros