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