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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 |
203 |
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