1 /* $OpenBSD: espreg.h,v 1.2 1996/10/31 01:01:30 niklas 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 _ESPREG_H_ 32 #define _ESPREG_H_ 33 34 /* 35 * Definitions for Hayes ESP serial cards. 36 */ 37 38 /* 39 * CMD1 and CMD2 are the command ports, offsets from <esp_iobase>. 40 */ 41 #define ESP_CMD1 4 42 #define ESP_CMD2 5 43 44 /* 45 * STAT1 and STAT2 are to get return values and status bytes 46 */ 47 #define ESP_STATUS1 ESP_CMD1 48 #define ESP_STATUS2 ESP_CMD2 49 50 /* 51 * Commands. Commands are given by writing the command value to 52 * ESP_CMD1 and then writing or reading some number of bytes from 53 * ESP_CMD2 or ESP_STATUS2. 54 */ 55 #define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */ 56 #define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */ 57 #define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */ 58 #define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */ 59 #define ESP_SETMODE 0x10 /* set board mode (1 byte) */ 60 61 /* Mode bits (ESP_SETMODE). */ 62 #define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */ 63 #define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */ 64 #define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */ 65 66 /* Flow control type bits (ESP_SETFLOWTYPE). */ 67 #define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */ 68 #define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */ 69 70 /* Used by ESP_SETRXFLOW. */ 71 #define RXHIGHWATER 768 72 #define RXLOWWATER 512 73 #define HIBYTE(w) (((w) >> 8) & 0xff) 74 #define LOBYTE(w) ((w) & 0xff) 75 76 #endif /* !_ESPREG_H_ */ 77