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Diffstat (limited to 'sys/dev/ic/espreg.h')
| -rw-r--r-- | sys/dev/ic/espreg.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/sys/dev/ic/espreg.h b/sys/dev/ic/espreg.h new file mode 100644 index 00000000000..02993943b89 --- /dev/null +++ b/sys/dev/ic/espreg.h @@ -0,0 +1,74 @@ +/*- + * Copyright (c) 1995 Sean E. Fagin, John M Vinopal. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the author nor the names of contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _ESPREG_H_ +#define _ESPREG_H_ + +/* + * Definitions for Hayes ESP serial cards. + */ + +/* + * CMD1 and CMD2 are the command ports, offsets from <esp_iobase>. + */ +#define ESP_CMD1 4 +#define ESP_CMD2 5 + +/* + * STAT1 and STAT2 are to get return values and status bytes + */ +#define ESP_STATUS1 ESP_CMD1 +#define ESP_STATUS2 ESP_CMD2 + +/* + * Commands. Commands are given by writing the command value to + * ESP_CMD1 and then writing or reading some number of bytes from + * ESP_CMD2 or ESP_STATUS2. + */ +#define ESP_GETTEST 0x01 /* self-test command (1 byte + extras) */ +#define ESP_GETDIPS 0x02 /* get on-board DIP switches (1 byte) */ +#define ESP_SETFLOWTYPE 0x08 /* set type of flow-control (2 bytes) */ +#define ESP_SETRXFLOW 0x0a /* set Rx FIFO flow control levels (4 bytes) */ +#define ESP_SETMODE 0x10 /* set board mode (1 byte) */ + +/* Mode bits (ESP_SETMODE). */ +#define ESP_MODE_FIFO 0x02 /* act like a 16550 (compatibility mode) */ +#define ESP_MODE_RTS 0x04 /* use RTS hardware flow control */ +#define ESP_MODE_SCALE 0x80 /* scale FIFO trigger levels */ + +/* Flow control type bits (ESP_SETFLOWTYPE). */ +#define ESP_FLOW_RTS 0x04 /* cmd1: local Rx sends RTS flow control */ +#define ESP_FLOW_CTS 0x10 /* cmd2: local transmitter responds to CTS */ + +/* Used by ESP_SETRXFLOW. */ +#define RXHIGHWATER 768 +#define RXLOWWATER 512 +#define HIBYTE(w) (((w) >> 8) & 0xff) +#define LOBYTE(w) ((w) & 0xff) + +#endif /* !_ESPREG_H_ */ |