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Hayes ESP register definition

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christos 1996-02-10 20:23:40 +00:00
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/* $NetBSD: hayespreg.h,v 1.1 1996/02/10 20:23:40 christos Exp $ */
/*-
* Copyright (c) 1995 Sean E. Fagin, John M Vinopal.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _HAYESPREG_H_
#define _HAYESPREG_H_
/*
* Definitions for Hayes ESP serial cards.
*/
/*
* CMD1 and CMD2 are the command ports, offsets from <hayesp_iobase>.
*/
#define HAYESP_CMD1 4
#define HAYESP_CMD2 5
/*
* STAT1 and STAT2 are to get return values and status bytes
*/
#define HAYESP_STATUS1 HAYESP_CMD1
#define HAYESP_STATUS2 HAYESP_CMD2
/*
* Commands. Commands are given by writing the command value to
* HAYESP_CMD1 and then writing or reading some number of bytes from
* HAYESP_CMD2 or HAYESP_STATUS2.
*/
#define HAYESP_GETTEST 0x01 /* self-test command (1b+extras) */
#define HAYESP_GETDIPS 0x02 /* get on-board DIP switches (1b) */
#define HAYESP_SETFLOWTYPE 0x08 /* set type of flow-control (2b) */
#define HAYESP_SETRXFLOW 0x0a /* set Rx FIFO " levels (4b) */
#define HAYESP_SETMODE 0x10 /* set board mode (1b) */
/* Mode bits (HAYESP_SETMODE). */
#define HAYESP_MODE_FIFO 0x02 /* act like a 16550 (compat mode) */
#define HAYESP_MODE_RTS 0x04 /* use RTS hardware flow control */
#define HAYESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */
/* Flow control type bits (HAYESP_SETFLOWTYPE). */
#define HAYESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */
#define HAYESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */
/* Used by HAYESP_SETRXFLOW. */
#define HAYESP_RXHIWMARK 768
#define HAYESP_RXLOWMARK 512
#define HAYESP_HIBYTE(w) (((w) >> 8) & 0xff)
#define HAYESP_LOBYTE(w) ((w) & 0xff)
#endif /* !_HAYESPREG_H_ */