77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*-
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* Copyright (c) 1995 Sean Eric Fagan.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id$
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*/
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#ifndef _IC_ESP_H_
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#define _IC_ESP_H_
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/*
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* Definitions for Hayes ESP serial cards.
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*/
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/*
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* CMD1 and CMD2 are the command ports, offsets from <esp_iobase>.
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*/
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#define ESP_CMD1 4
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#define ESP_CMD2 5
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/*
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* STAT1 and STAT2 are to get return values and status bytes;
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* they overload CMD1 and CMD2.
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*/
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#define ESP_STATUS1 ESP_CMD1
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#define ESP_STATUS2 ESP_CMD2
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/*
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* Commands. Commands are given by writing the command value to
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* ESP_CMD1 and then writing or reading some number of bytes from
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* ESP_CMD2 or ESP_STATUS2.
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*/
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#define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */
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#define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */
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#define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */
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#define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */
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#define ESP_SETMODE 0x10 /* set board mode (1 byte) */
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/* Mode bits (ESP_SETMODE). */
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#define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */
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#define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */
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#define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */
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/* Flow control type bits (ESP_SETFLOWTYPE). */
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#define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */
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#define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */
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/* Used by ESP_SETRXFLOW. */
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#define HIBYTE(w) (((w) >> 8) & 0xff)
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#define LOBYTE(w) ((w) & 0xff)
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#endif /* !_IC_ESP_H_ */
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