The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/hayespreg.h

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    1 /*      $NetBSD: hayespreg.h,v 1.2 2001/09/04 01:33:14 enami 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_ */

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