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_ */
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