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