Annotation of sys/dev/ic/espreg.h, Revision 1.1.1.1
1.1 nbrk 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_ */
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