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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_ */