1 /*- 2 * Copyright (c) 1995 Sean Eric Fagan. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/sys/dev/ic/esp.h,v 1.6.2.1 2002/02/03 14:52:02 nyan Exp $ 30 */ 31 32 #ifndef _IC_ESP_H_ 33 #define _IC_ESP_H_ 34 35 /* 36 * Definitions for Hayes ESP serial cards. 37 */ 38 39 /* 40 * CMD1 and CMD2 are the command ports, offsets from <esp_iobase>. 41 */ 42 #define ESP_CMD1 4 43 #define ESP_CMD2 5 44 45 /* 46 * STAT1 and STAT2 are to get return values and status bytes; 47 * they overload CMD1 and CMD2. 48 */ 49 #define ESP_STATUS1 ESP_CMD1 50 #define ESP_STATUS2 ESP_CMD2 51 52 /* 53 * Commands. Commands are given by writing the command value to 54 * ESP_CMD1 and then writing or reading some number of bytes from 55 * ESP_CMD2 or ESP_STATUS2. 56 */ 57 #define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */ 58 #define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */ 59 #define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */ 60 #define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */ 61 #define ESP_SETMODE 0x10 /* set board mode (1 byte) */ 62 #define ESP_SETCLOCK 0x23 /* set UART clock prescaler */ 63 64 /* Mode bits (ESP_SETMODE). */ 65 #define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */ 66 #define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */ 67 #define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */ 68 69 /* Flow control type bits (ESP_SETFLOWTYPE). */ 70 #define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */ 71 #define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */ 72 73 /* Used by ESP_SETRXFLOW. */ 74 #define HIBYTE(w) (((w) >> 8) & 0xff) 75 #define LOBYTE(w) ((w) & 0xff) 76 77 #endif /* !_IC_ESP_H_ */ 78