sys/dev/qbus/dlreg.h

   1 /*      $NetBSD: dlreg.h,v 1.4.28.1 2005/03/04 16:49:52 skrll Exp $     */
   2 /*
   3  * Ben Harris, 1997
   4  *
   5  * This file is in the Public Domain.
   6  */
   7 /*
   8  * dlreg.h -- Definitions for the DL11 and DLV11 serial cards.
   9  *
  10  * Style in imitation of dzreg.h.
  11  */
  12
  13 #ifdef notdef
  14 union w_b
  15 {
  16         u_short word;
  17         struct {
  18                 u_char byte_lo;
  19                 u_char byte_hi;
  20         } bytes;
  21 };
  22
  23 struct DLregs
  24 {
  25         volatile u_short dl_rcsr; /* Receive Control/Status Register (R/W) */
  26         volatile u_short dl_rbuf; /* Receive Buffer (R) */
  27         volatile u_short dl_xcsr; /* Transmit Control/Status Register (R/W) */
  28         volatile union w_b u_xbuf; /* Transmit Buffer (W) */
  29 #define dl_xbuf u_xbuf.bytes.byte_lo
  30 };
  31
  32 typedef struct DLregs dlregs;
  33 #endif
  34
  35 #define DL_UBA_RCSR     0
  36 #define DL_UBA_RBUF     2
  37 #define DL_UBA_XCSR     4
  38 #define DL_UBA_XBUFL    6
  39
  40 /* RCSR bits */
  41
  42 #define DL_RCSR_RX_DONE         0x0080 /* Receiver Done (R) */
  43 #define DL_RCSR_RXIE            0x0040 /* Receiver Interrupt Enable (R/W) */
  44 #define DL_RCSR_READER_ENABLE   0x0001 /* [paper-tape] Reader Enable (W) */
  45 #define DL_RCSR_BITS            "\20\1READER_ENABLE\7RXIE\10RX_DONE\n"
  46
  47 /* RBUF bits */
  48
  49 #define DL_RBUF_ERR             0x8000 /* Error (R) */
  50 #define DL_RBUF_OVERRUN_ERR     0x4000 /* Overrun Error (R) */
  51 #define DL_RBUF_FRAMING_ERR     0x2000 /* Framing Error (R) */
  52 #define DL_RBUF_PARITY_ERR      0x1000 /* Parity Error (R) */
  53 #define DL_RBUF_DATA_MASK       0x00FF /* Receive Data (R) */
  54 #define DL_RBUF_BITS    "\20\15PARITY_ERR\16FRAMING_ERR\17OVERRUN_ERR\20ERR\n"
  55
  56 /* XCSR bits */
  57
  58 #define DL_XCSR_TX_READY        0x0080 /* Transmitter Ready (R) */
  59 #define DL_XCSR_TXIE            0x0040 /* Transmit Interrupt Enable (R/W) */
  60 #define DL_XCSR_TX_BREAK        0x0001 /* Transmit Break (R/W) */
  61 #define DL_XCSR_BITS            "\20\1TX_BREAK\7TXIE\10TX_READY\n"
  62
  63 /* XBUF is just data byte right justified. */