esp.h revision 13105
1130812Smarcel/*- 2130812Smarcel * Copyright (c) 1995 Sean Eric Fagan. 3130812Smarcel * All rights reserved. 4130812Smarcel * 5130812Smarcel * Redistribution and use in source and binary forms, with or without 6130812Smarcel * modification, are permitted provided that the following conditions 7130812Smarcel * are met: 8130812Smarcel * 1. Redistributions of source code must retain the above copyright 9130812Smarcel * notice, this list of conditions and the following disclaimer. 10130812Smarcel * 2. Redistributions in binary form must reproduce the above copyright 11130812Smarcel * notice, this list of conditions and the following disclaimer in the 12130812Smarcel * documentation and/or other materials provided with the distribution. 13130812Smarcel * 3. Neither the name of the author nor the names of contributors 14130812Smarcel * may be used to endorse or promote products derived from this software 15130812Smarcel * without specific prior written permission. 16130812Smarcel * 17130812Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18130812Smarcel * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19130812Smarcel * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20130812Smarcel * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21130812Smarcel * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22130812Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23130812Smarcel * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24130812Smarcel * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25130812Smarcel * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26130812Smarcel * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27130812Smarcel * SUCH DAMAGE. 28130812Smarcel * 29130812Smarcel * $Id$ 30130812Smarcel */ 31130812Smarcel 32130812Smarcel#ifndef _IC_ESP_H_ 33130812Smarcel#define _IC_ESP_H_ 34130812Smarcel 35130812Smarcel/* 36130812Smarcel * Definitions for Hayes ESP serial cards. 37130812Smarcel */ 38130812Smarcel 39130812Smarcel/* 40130812Smarcel * CMD1 and CMD2 are the command ports, offsets from <esp_iobase>. 41130812Smarcel */ 42130812Smarcel#define ESP_CMD1 4 43130812Smarcel#define ESP_CMD2 5 44130812Smarcel 45130812Smarcel/* 46130812Smarcel * STAT1 and STAT2 are to get return values and status bytes; 47130812Smarcel * they overload CMD1 and CMD2. 48130812Smarcel */ 49130812Smarcel#define ESP_STATUS1 ESP_CMD1 50130812Smarcel#define ESP_STATUS2 ESP_CMD2 51130812Smarcel 52130812Smarcel/* 53130812Smarcel * Commands. Commands are given by writing the command value to 54130812Smarcel * ESP_CMD1 and then writing or reading some number of bytes from 55130812Smarcel * ESP_CMD2 or ESP_STATUS2. 56130812Smarcel */ 57130812Smarcel#define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */ 58130812Smarcel#define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */ 59130812Smarcel#define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */ 60130812Smarcel#define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */ 61130812Smarcel#define ESP_SETMODE 0x10 /* set board mode (1 byte) */ 62130812Smarcel 63130812Smarcel/* Mode bits (ESP_SETMODE). */ 64130812Smarcel#define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */ 65130812Smarcel#define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */ 66130812Smarcel#define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */ 67130812Smarcel 68130812Smarcel/* Flow control type bits (ESP_SETFLOWTYPE). */ 69130812Smarcel#define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */ 70130812Smarcel#define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */ 71130812Smarcel 72130812Smarcel/* Used by ESP_SETRXFLOW. */ 73130812Smarcel#define HIBYTE(w) (((w) >> 8) & 0xff) 74130812Smarcel#define LOBYTE(w) ((w) & 0xff) 75130812Smarcel 76130812Smarcel#endif /* !_IC_ESP_H_ */ 77130812Smarcel