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1da177e4 LT |
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 |