2 * Copyright (c) 1995 Sean Eric Fagan.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * $FreeBSD: src/sys/dev/ic/esp.h,v 1.6.2.1 2002/02/03 14:52:02 nyan Exp $
30 * $DragonFly: src/sys/dev/serial/ic_layer/esp.h,v 1.2 2003/06/17 04:28:27 dillon Exp $
37 * Definitions for Hayes ESP serial cards.
41 * CMD1 and CMD2 are the command ports, offsets from <esp_iobase>.
47 * STAT1 and STAT2 are to get return values and status bytes;
48 * they overload CMD1 and CMD2.
50 #define ESP_STATUS1 ESP_CMD1
51 #define ESP_STATUS2 ESP_CMD2
54 * Commands. Commands are given by writing the command value to
55 * ESP_CMD1 and then writing or reading some number of bytes from
56 * ESP_CMD2 or ESP_STATUS2.
58 #define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */
59 #define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */
60 #define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */
61 #define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */
62 #define ESP_SETMODE 0x10 /* set board mode (1 byte) */
63 #define ESP_SETCLOCK 0x23 /* set UART clock prescaler */
65 /* Mode bits (ESP_SETMODE). */
66 #define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */
67 #define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */
68 #define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */
70 /* Flow control type bits (ESP_SETFLOWTYPE). */
71 #define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */
72 #define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */
74 /* Used by ESP_SETRXFLOW. */
75 #define HIBYTE(w) (((w) >> 8) & 0xff)
76 #define LOBYTE(w) ((w) & 0xff)
78 #endif /* !_IC_ESP_H_ */