sys/dev/ic/hayespreg.h

   1 /*      $NetBSD: hayespreg.h,v 1.1 1996/02/10 20:23:40 christos Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1995  Sean E. Fagin, John M Vinopal.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the author nor the names of contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 #ifndef _HAYESPREG_H_
  32 #define _HAYESPREG_H_
  33
  34 /*
  35  * Definitions for Hayes ESP serial cards.
  36  */
  37
  38 /*
  39  * CMD1 and CMD2 are the command ports, offsets from <hayesp_iobase>.
  40  */
  41 #define HAYESP_CMD1     4
  42 #define HAYESP_CMD2     5
  43
  44 /*
  45  * STAT1 and STAT2 are to get return values and status bytes
  46  */
  47 #define HAYESP_STATUS1  HAYESP_CMD1
  48 #define HAYESP_STATUS2  HAYESP_CMD2
  49
  50 /*
  51  * Commands.  Commands are given by writing the command value to
  52  * HAYESP_CMD1 and then writing or reading some number of bytes from
  53  * HAYESP_CMD2 or HAYESP_STATUS2.
  54  */
  55 #define HAYESP_GETTEST          0x01    /* self-test command (1b+extras) */
  56 #define HAYESP_GETDIPS          0x02    /* get on-board DIP switches (1b) */
  57 #define HAYESP_SETFLOWTYPE      0x08    /* set type of flow-control (2b) */
  58 #define HAYESP_SETRXFLOW        0x0a    /* set Rx FIFO " levels (4b) */
  59 #define HAYESP_SETMODE          0x10    /* set board mode (1b) */
  60 #define HAYESP_SETPRESCALER     0x23    /* set UART clock prescaler (1b) */
  61
  62 /* Mode bits (HAYESP_SETMODE). */
  63 #define HAYESP_MODE_FIFO        0x02    /* act like a 16550 (compat mode) */
  64 #define HAYESP_MODE_RTS         0x04    /* use RTS hardware flow control */
  65 #define HAYESP_MODE_SCALE       0x80    /* scale FIFO trigger levels */
  66
  67 /* Flow control type bits (HAYESP_SETFLOWTYPE). */
  68 #define HAYESP_FLOW_RTS 0x04    /* cmd1: local Rx sends RTS flow control */
  69 #define HAYESP_FLOW_CTS 0x10    /* cmd2: local transmitter responds to CTS */
  70
  71 /* Used by HAYESP_SETRXFLOW. */
  72 #define HAYESP_RXHIWMARK        768
  73 #define HAYESP_RXLOWMARK        512
  74 #define HAYESP_HIBYTE(w)        (((w) >> 8) & 0xff)
  75 #define HAYESP_LOBYTE(w)        ((w) & 0xff)
  76
  77 #endif /* !_HAYESPREG_H_ */