drivers/char/ser_a2232.h

   1 /* drivers/char/ser_a2232.h */
   2
   3 /* $Id: ser_a2232.h,v 0.4 2000/01/25 12:00:00 ehaase Exp $ */
   4
   5 /* Linux serial driver for the Amiga A2232 board */
   6
   7 /* This driver is MAINTAINED. Before applying any changes, please contact
   8  * the author.
   9  */
  10
  11 /* Copyright (c) 2000-2001 Enver Haase    <ehaase@inf.fu-berlin.de>
  12  *                   alias The A2232 driver project <A2232@gmx.net>
  13  * All rights reserved.
  14  *
  15  *   This program is free software; you can redistribute it and/or modify
  16  *   it under the terms of the GNU General Public License as published by
  17  *   the Free Software Foundation; either version 2 of the License, or
  18  *   (at your option) any later version.
  19  *
  20  *   This program is distributed in the hope that it will be useful,
  21  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  *   GNU General Public License for more details.
  24  *
  25  *   You should have received a copy of the GNU General Public License
  26  *   along with this program; if not, write to the Free Software
  27  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  28  *
  29  */
  30
  31 #ifndef _SER_A2232_H_
  32 #define _SER_A2232_H_
  33
  34 /*
  35         How many boards are to be supported at maximum;
  36         "up to five A2232 Multiport Serial Cards may be installed in a
  37         single Amiga 2000" states the A2232 User's Guide. If you have
  38         more slots available, you might want to change the value below.
  39 */
  40 #define MAX_A2232_BOARDS 5
  41
  42 #ifndef A2232_NORMAL_MAJOR
  43 /* This allows overriding on the compiler commandline, or in a "major.h"
  44    include or something like that */
  45 #define A2232_NORMAL_MAJOR  224 /* /dev/ttyY* */
  46 #define A2232_CALLOUT_MAJOR 225 /* /dev/cuy*  */
  47 #endif
  48
  49 /* Some magic is always good - Who knows :) */
  50 #define A2232_MAGIC 0x000a2232
  51
  52 /* A2232 port structure to keep track of the
  53    status of every single line used */
  54 struct a2232_port{
  55         struct gs_port gs;
  56         unsigned int which_a2232;
  57         unsigned int which_port_on_a2232;
  58         short disable_rx;
  59         short throttle_input;
  60         short cd_status;
  61 };
  62
  63 #define NUMLINES                7       /* number of lines per board */
  64 #define A2232_IOBUFLEN          256     /* number of bytes per buffer */
  65 #define A2232_IOBUFLENMASK      0xff    /* mask for maximum number of bytes */
  66
  67
  68 #define A2232_UNKNOWN   0       /* crystal not known */
  69 #define A2232_NORMAL    1       /* normal A2232 (1.8432 MHz oscillator) */
  70 #define A2232_TURBO     2       /* turbo A2232 (3.6864 MHz oscillator) */
  71
  72
  73 struct a2232common {
  74         char   Crystal; /* normal (1) or turbo (2) board? */
  75         u_char Pad_a;
  76         u_char TimerH;  /* timer value after speed check */
  77         u_char TimerL;
  78         u_char CDHead;  /* head pointer for CD message queue */
  79         u_char CDTail;  /* tail pointer for CD message queue */
  80         u_char CDStatus;
  81         u_char Pad_b;
  82 };
  83
  84 struct a2232status {
  85         u_char InHead;          /* input queue head */
  86         u_char InTail;          /* input queue tail */
  87         u_char OutDisable;      /* disables output */
  88         u_char OutHead;         /* output queue head */
  89         u_char OutTail;         /* output queue tail */
  90         u_char OutCtrl;         /* soft flow control character to send */
  91         u_char OutFlush;        /* flushes output buffer */
  92         u_char Setup;           /* causes reconfiguration */
  93         u_char Param;           /* parameter byte - see A2232PARAM */
  94         u_char Command;         /* command byte - see A2232CMD */
  95         u_char SoftFlow;        /* enables xon/xoff flow control */
  96         /* private 65EC02 fields: */
  97         u_char XonOff;          /* stores XON/XOFF enable/disable */
  98 };
  99
 100 #define A2232_MEMPAD1   \
 101         (0x0200 - NUMLINES * sizeof(struct a2232status) -       \
 102         sizeof(struct a2232common))
 103 #define A2232_MEMPAD2   (0x2000 - NUMLINES * A2232_IOBUFLEN - A2232_IOBUFLEN)
 104
 105 struct a2232memory {
 106         struct a2232status Status[NUMLINES];    /* 0x0000-0x006f status areas */
 107         struct a2232common Common;              /* 0x0070-0x0077 common flags */
 108         u_char Dummy1[A2232_MEMPAD1];           /* 0x00XX-0x01ff */
 109         u_char OutBuf[NUMLINES][A2232_IOBUFLEN];/* 0x0200-0x08ff output bufs */
 110         u_char InBuf[NUMLINES][A2232_IOBUFLEN]; /* 0x0900-0x0fff input bufs */
 111         u_char InCtl[NUMLINES][A2232_IOBUFLEN]; /* 0x1000-0x16ff control data */
 112         u_char CDBuf[A2232_IOBUFLEN];           /* 0x1700-0x17ff CD event buffer */
 113         u_char Dummy2[A2232_MEMPAD2];           /* 0x1800-0x2fff */
 114         u_char Code[0x1000];                    /* 0x3000-0x3fff code area */
 115         u_short InterruptAck;                   /* 0x4000        intr ack */
 116         u_char Dummy3[0x3ffe];                  /* 0x4002-0x7fff */
 117         u_short Enable6502Reset;                /* 0x8000 Stop board, */
 118                                                 /*  6502 RESET line held low */
 119         u_char Dummy4[0x3ffe];                  /* 0x8002-0xbfff */
 120         u_short ResetBoard;                     /* 0xc000 reset board & run, */
 121                                                 /*  6502 RESET line held high */
 122 };
 123
 124 #undef A2232_MEMPAD1
 125 #undef A2232_MEMPAD2
 126
 127 #define A2232INCTL_CHAR         0       /* corresponding byte in InBuf is a character */
 128 #define A2232INCTL_EVENT        1       /* corresponding byte in InBuf is an event */
 129
 130 #define A2232EVENT_Break        1       /* break set */
 131 #define A2232EVENT_CarrierOn    2       /* carrier raised */
 132 #define A2232EVENT_CarrierOff   3       /* carrier dropped */
 133 #define A2232EVENT_Sync         4       /* don't know, defined in 2232.ax */
 134
 135 #define A2232CMD_Enable         0x1     /* enable/DTR bit */
 136 #define A2232CMD_Close          0x2     /* close the device */
 137 #define A2232CMD_Open           0xb     /* open the device */
 138 #define A2232CMD_CMask          0xf     /* command mask */
 139 #define A2232CMD_RTSOff         0x0     /* turn off RTS */
 140 #define A2232CMD_RTSOn          0x8     /* turn on RTS */
 141 #define A2232CMD_Break          0xd     /* transmit a break */
 142 #define A2232CMD_RTSMask        0xc     /* mask for RTS stuff */
 143 #define A2232CMD_NoParity       0x00    /* don't use parity */
 144 #define A2232CMD_OddParity      0x20    /* odd parity */
 145 #define A2232CMD_EvenParity     0x60    /* even parity */
 146 #define A2232CMD_ParityMask     0xe0    /* parity mask */
 147
 148 #define A2232PARAM_B115200      0x0     /* baud rates */
 149 #define A2232PARAM_B50          0x1
 150 #define A2232PARAM_B75          0x2
 151 #define A2232PARAM_B110         0x3
 152 #define A2232PARAM_B134         0x4
 153 #define A2232PARAM_B150         0x5
 154 #define A2232PARAM_B300         0x6
 155 #define A2232PARAM_B600         0x7
 156 #define A2232PARAM_B1200        0x8
 157 #define A2232PARAM_B1800        0x9
 158 #define A2232PARAM_B2400        0xa
 159 #define A2232PARAM_B3600        0xb
 160 #define A2232PARAM_B4800        0xc
 161 #define A2232PARAM_B7200        0xd
 162 #define A2232PARAM_B9600        0xe
 163 #define A2232PARAM_B19200       0xf
 164 #define A2232PARAM_BaudMask     0xf     /* baud rate mask */
 165 #define A2232PARAM_RcvBaud      0x10    /* enable receive baud rate */
 166 #define A2232PARAM_8Bit         0x00    /* numbers of bits */
 167 #define A2232PARAM_7Bit         0x20
 168 #define A2232PARAM_6Bit         0x40
 169 #define A2232PARAM_5Bit         0x60
 170 #define A2232PARAM_BitMask      0x60    /* numbers of bits mask */
 171
 172
 173 /* Standard speeds tables, -1 means unavailable, -2 means 0 baud: switch off line */
 174 #define A2232_BAUD_TABLE_NOAVAIL -1
 175 #define A2232_BAUD_TABLE_NUM_RATES (18)
 176 static int a2232_baud_table[A2232_BAUD_TABLE_NUM_RATES*3] = {
 177         //Baud  //Normal                        //Turbo
 178         50,     A2232PARAM_B50,                 A2232_BAUD_TABLE_NOAVAIL,
 179         75,     A2232PARAM_B75,                 A2232_BAUD_TABLE_NOAVAIL,
 180         110,    A2232PARAM_B110,                A2232_BAUD_TABLE_NOAVAIL,
 181         134,    A2232PARAM_B134,                A2232_BAUD_TABLE_NOAVAIL,
 182         150,    A2232PARAM_B150,                A2232PARAM_B75,
 183         200,    A2232_BAUD_TABLE_NOAVAIL,       A2232_BAUD_TABLE_NOAVAIL,
 184         300,    A2232PARAM_B300,                A2232PARAM_B150,
 185         600,    A2232PARAM_B600,                A2232PARAM_B300,
 186         1200,   A2232PARAM_B1200,               A2232PARAM_B600,
 187         1800,   A2232PARAM_B1800,               A2232_BAUD_TABLE_NOAVAIL,
 188         2400,   A2232PARAM_B2400,               A2232PARAM_B1200,
 189         4800,   A2232PARAM_B4800,               A2232PARAM_B2400,
 190         9600,   A2232PARAM_B9600,               A2232PARAM_B4800,
 191         19200,  A2232PARAM_B19200,              A2232PARAM_B9600,
 192         38400,  A2232_BAUD_TABLE_NOAVAIL,       A2232PARAM_B19200,
 193         57600,  A2232_BAUD_TABLE_NOAVAIL,       A2232_BAUD_TABLE_NOAVAIL,
 194 #ifdef A2232_SPEEDHACK
 195         115200, A2232PARAM_B115200,             A2232_BAUD_TABLE_NOAVAIL,
 196         230400, A2232_BAUD_TABLE_NOAVAIL,       A2232PARAM_B115200
 197 #else
 198         115200, A2232_BAUD_TABLE_NOAVAIL,       A2232_BAUD_TABLE_NOAVAIL,
 199         230400, A2232_BAUD_TABLE_NOAVAIL,       A2232_BAUD_TABLE_NOAVAIL
 200 #endif
 201 };
 202 #endif