203 lines
7.4 KiB
C
203 lines
7.4 KiB
C
/* drivers/char/ser_a2232.h */
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/* $Id: ser_a2232.h,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */
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/* Linux serial driver for the Amiga A2232 board */
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/* This driver is MAINTAINED. Before applying any changes, please contact
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* the author.
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*/
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/* Copyright (c) 2000-2001 Enver Haase <ehaase@inf.fu-berlin.de>
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* alias The A2232 driver project <A2232@gmx.net>
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _SER_A2232_H_
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#define _SER_A2232_H_
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/*
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How many boards are to be supported at maximum;
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"up to five A2232 Multiport Serial Cards may be installed in a
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single Amiga 2000" states the A2232 User's Guide. If you have
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more slots available, you might want to change the value below.
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*/
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#define MAX_A2232_BOARDS 5
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#ifndef A2232_NORMAL_MAJOR
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/* This allows overriding on the compiler commandline, or in a "major.h"
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include or something like that */
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#define A2232_NORMAL_MAJOR 224 /* /dev/ttyY* */
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#define A2232_CALLOUT_MAJOR 225 /* /dev/cuy* */
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#endif
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/* Some magic is always good - Who knows :) */
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#define A2232_MAGIC 0x000a2232
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/* A2232 port structure to keep track of the
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status of every single line used */
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struct a2232_port{
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struct gs_port gs;
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unsigned int which_a2232;
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unsigned int which_port_on_a2232;
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short disable_rx;
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short throttle_input;
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short cd_status;
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};
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#define NUMLINES 7 /* number of lines per board */
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#define A2232_IOBUFLEN 256 /* number of bytes per buffer */
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#define A2232_IOBUFLENMASK 0xff /* mask for maximum number of bytes */
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#define A2232_UNKNOWN 0 /* crystal not known */
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#define A2232_NORMAL 1 /* normal A2232 (1.8432 MHz oscillator) */
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#define A2232_TURBO 2 /* turbo A2232 (3.6864 MHz oscillator) */
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struct a2232common {
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char Crystal; /* normal (1) or turbo (2) board? */
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u_char Pad_a;
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u_char TimerH; /* timer value after speed check */
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u_char TimerL;
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u_char CDHead; /* head pointer for CD message queue */
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u_char CDTail; /* tail pointer for CD message queue */
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u_char CDStatus;
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u_char Pad_b;
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};
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struct a2232status {
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u_char InHead; /* input queue head */
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u_char InTail; /* input queue tail */
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u_char OutDisable; /* disables output */
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u_char OutHead; /* output queue head */
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u_char OutTail; /* output queue tail */
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u_char OutCtrl; /* soft flow control character to send */
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u_char OutFlush; /* flushes output buffer */
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u_char Setup; /* causes reconfiguration */
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u_char Param; /* parameter byte - see A2232PARAM */
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u_char Command; /* command byte - see A2232CMD */
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u_char SoftFlow; /* enables xon/xoff flow control */
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/* private 65EC02 fields: */
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u_char XonOff; /* stores XON/XOFF enable/disable */
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};
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#define A2232_MEMPAD1 \
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(0x0200 - NUMLINES * sizeof(struct a2232status) - \
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sizeof(struct a2232common))
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#define A2232_MEMPAD2 (0x2000 - NUMLINES * A2232_IOBUFLEN - A2232_IOBUFLEN)
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struct a2232memory {
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struct a2232status Status[NUMLINES]; /* 0x0000-0x006f status areas */
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struct a2232common Common; /* 0x0070-0x0077 common flags */
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u_char Dummy1[A2232_MEMPAD1]; /* 0x00XX-0x01ff */
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u_char OutBuf[NUMLINES][A2232_IOBUFLEN];/* 0x0200-0x08ff output bufs */
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u_char InBuf[NUMLINES][A2232_IOBUFLEN]; /* 0x0900-0x0fff input bufs */
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u_char InCtl[NUMLINES][A2232_IOBUFLEN]; /* 0x1000-0x16ff control data */
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u_char CDBuf[A2232_IOBUFLEN]; /* 0x1700-0x17ff CD event buffer */
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u_char Dummy2[A2232_MEMPAD2]; /* 0x1800-0x2fff */
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u_char Code[0x1000]; /* 0x3000-0x3fff code area */
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u_short InterruptAck; /* 0x4000 intr ack */
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u_char Dummy3[0x3ffe]; /* 0x4002-0x7fff */
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u_short Enable6502Reset; /* 0x8000 Stop board, */
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/* 6502 RESET line held low */
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u_char Dummy4[0x3ffe]; /* 0x8002-0xbfff */
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u_short ResetBoard; /* 0xc000 reset board & run, */
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/* 6502 RESET line held high */
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};
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#undef A2232_MEMPAD1
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#undef A2232_MEMPAD2
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#define A2232INCTL_CHAR 0 /* corresponding byte in InBuf is a character */
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#define A2232INCTL_EVENT 1 /* corresponding byte in InBuf is an event */
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#define A2232EVENT_Break 1 /* break set */
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#define A2232EVENT_CarrierOn 2 /* carrier raised */
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#define A2232EVENT_CarrierOff 3 /* carrier dropped */
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#define A2232EVENT_Sync 4 /* don't know, defined in 2232.ax */
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#define A2232CMD_Enable 0x1 /* enable/DTR bit */
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#define A2232CMD_Close 0x2 /* close the device */
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#define A2232CMD_Open 0xb /* open the device */
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#define A2232CMD_CMask 0xf /* command mask */
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#define A2232CMD_RTSOff 0x0 /* turn off RTS */
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#define A2232CMD_RTSOn 0x8 /* turn on RTS */
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#define A2232CMD_Break 0xd /* transmit a break */
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#define A2232CMD_RTSMask 0xc /* mask for RTS stuff */
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#define A2232CMD_NoParity 0x00 /* don't use parity */
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#define A2232CMD_OddParity 0x20 /* odd parity */
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#define A2232CMD_EvenParity 0x60 /* even parity */
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#define A2232CMD_ParityMask 0xe0 /* parity mask */
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#define A2232PARAM_B115200 0x0 /* baud rates */
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#define A2232PARAM_B50 0x1
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#define A2232PARAM_B75 0x2
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#define A2232PARAM_B110 0x3
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#define A2232PARAM_B134 0x4
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#define A2232PARAM_B150 0x5
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#define A2232PARAM_B300 0x6
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#define A2232PARAM_B600 0x7
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#define A2232PARAM_B1200 0x8
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#define A2232PARAM_B1800 0x9
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#define A2232PARAM_B2400 0xa
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#define A2232PARAM_B3600 0xb
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#define A2232PARAM_B4800 0xc
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#define A2232PARAM_B7200 0xd
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#define A2232PARAM_B9600 0xe
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#define A2232PARAM_B19200 0xf
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#define A2232PARAM_BaudMask 0xf /* baud rate mask */
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#define A2232PARAM_RcvBaud 0x10 /* enable receive baud rate */
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#define A2232PARAM_8Bit 0x00 /* numbers of bits */
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#define A2232PARAM_7Bit 0x20
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#define A2232PARAM_6Bit 0x40
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#define A2232PARAM_5Bit 0x60
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#define A2232PARAM_BitMask 0x60 /* numbers of bits mask */
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/* Standard speeds tables, -1 means unavailable, -2 means 0 baud: switch off line */
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#define A2232_BAUD_TABLE_NOAVAIL -1
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#define A2232_BAUD_TABLE_NUM_RATES (18)
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static int a2232_baud_table[A2232_BAUD_TABLE_NUM_RATES*3] = {
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//Baud //Normal //Turbo
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50, A2232PARAM_B50, A2232_BAUD_TABLE_NOAVAIL,
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75, A2232PARAM_B75, A2232_BAUD_TABLE_NOAVAIL,
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110, A2232PARAM_B110, A2232_BAUD_TABLE_NOAVAIL,
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134, A2232PARAM_B134, A2232_BAUD_TABLE_NOAVAIL,
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150, A2232PARAM_B150, A2232PARAM_B75,
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200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL,
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300, A2232PARAM_B300, A2232PARAM_B150,
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600, A2232PARAM_B600, A2232PARAM_B300,
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1200, A2232PARAM_B1200, A2232PARAM_B600,
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1800, A2232PARAM_B1800, A2232_BAUD_TABLE_NOAVAIL,
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2400, A2232PARAM_B2400, A2232PARAM_B1200,
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4800, A2232PARAM_B4800, A2232PARAM_B2400,
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9600, A2232PARAM_B9600, A2232PARAM_B4800,
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19200, A2232PARAM_B19200, A2232PARAM_B9600,
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38400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B19200,
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57600, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL,
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#ifdef A2232_SPEEDHACK
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115200, A2232PARAM_B115200, A2232_BAUD_TABLE_NOAVAIL,
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230400, A2232_BAUD_TABLE_NOAVAIL, A2232PARAM_B115200
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#else
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115200, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL,
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230400, A2232_BAUD_TABLE_NOAVAIL, A2232_BAUD_TABLE_NOAVAIL
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#endif
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};
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#endif
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