aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ariadne.h
blob: f7913d5a39f1991a264dea61453812117539561b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
/*
 *  Amiga Linux/m68k Ariadne Ethernet Driver
 *
 *  © Copyright 1995 by Geert Uytterhoeven (geert@linux-m68k.org)
 *			Peter De Schrijver
 *		       (Peter.DeSchrijver@linux.cc.kuleuven.ac.be)
 *
 *  ----------------------------------------------------------------------------------
 *
 *  This program is based on
 *
 *	lance.c:	An AMD LANCE ethernet driver for linux.
 *			Written 1993-94 by Donald Becker.
 *
 *	Am79C960:	PCnet(tm)-ISA Single-Chip Ethernet Controller
 *			Advanced Micro Devices
 *			Publication #16907, Rev. B, Amendment/0, May 1994
 *
 *	MC68230:	Parallel Interface/Timer (PI/T)
 *			Motorola Semiconductors, December, 1983
 *
 *  ----------------------------------------------------------------------------------
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License.  See the file COPYING in the main directory of the Linux
 *  distribution for more details.
 *
 *  ----------------------------------------------------------------------------------
 *
 *  The Ariadne is a Zorro-II board made by Village Tronic. It contains:
 *
 *	- an Am79C960 PCnet-ISA Single-Chip Ethernet Controller with both
 *	  10BASE-2 (thin coax) and 10BASE-T (UTP) connectors
 *
 *	- an MC68230 Parallel Interface/Timer configured as 2 parallel ports
 */


    /*
     *	Am79C960 PCnet-ISA
     */

struct Am79C960 {
    volatile u_short AddressPROM[8];
				/* IEEE Address PROM (Unused in the Ariadne) */
    volatile u_short RDP;	/* Register Data Port */
    volatile u_short RAP;	/* Register Address Port */
    volatile u_short Reset;	/* Reset Chip on Read Access */
    volatile u_short IDP;	/* ISACSR Data Port */
};


    /*
     *	Am79C960 Control and Status Registers
     *
     *	These values are already swap()ed!!
     *
     *	Only registers marked with a `-' are intended for network software
     *	access
     */

#define CSR0		0x0000	/* - PCnet-ISA Controller Status */
#define CSR1		0x0100	/* - IADR[15:0] */
#define CSR2		0x0200	/* - IADR[23:16] */
#define CSR3		0x0300	/* - Interrupt Masks and Deferral Control */
#define CSR4		0x0400	/* - Test and Features Control */
#define CSR6		0x0600	/*   RCV/XMT Descriptor Table Length */
#define CSR8		0x0800	/* - Logical Address Filter, LADRF[15:0] */
#define CSR9		0x0900	/* - Logical Address Filter, LADRF[31:16] */
#define CSR10		0x0a00	/* - Logical Address Filter, LADRF[47:32] */
#define CSR11		0x0b00	/* - Logical Address Filter, LADRF[63:48] */
#define CSR12		0x0c00	/* - Physical Address Register, PADR[15:0] */
#define CSR13		0x0d00	/* - Physical Address Register, PADR[31:16] */
#define CSR14		0x0e00	/* - Physical Address Register, PADR[47:32] */
#define CSR15		0x0f00	/* - Mode Register */
#define CSR16		0x1000	/*   Initialization Block Address Lower */
#define CSR17		0x1100	/*   Initialization Block Address Upper */
#define CSR18		0x1200	/*   Current Receive Buffer Address */
#define CSR19		0x1300	/*   Current Receive Buffer Address */
#define CSR20		0x1400	/*   Current Transmit Buffer Address */
#define CSR21		0x1500	/*   Current Transmit Buffer Address */
#define CSR22		0x1600	/*   Next Receive Buffer Address */
#define CSR23		0x1700	/*   Next Receive Buffer Address */
#define CSR24		0x1800	/* - Base Address of Receive Ring */
#define CSR25		0x1900	/* - Base Address of Receive Ring */
#define CSR26		0x1a00	/*   Next Receive Descriptor Address */
#define CSR27		0x1b00	/*   Next Receive Descriptor Address */
#define CSR28		0x1c00	/*   Current Receive Descriptor Address */
#define CSR29		0x1d00	/*   Current Receive Descriptor Address */
#define CSR30		0x1e00	/* - Base Address of Transmit Ring */
#define CSR31		0x1f00	/* - Base Address of transmit Ring */
#define CSR32		0x2000	/*   Next Transmit Descriptor Address */
#define CSR33		0x2100	/*   Next Transmit Descriptor Address */
#define CSR34		0x2200	/*   Current Transmit Descriptor Address */
#define CSR35		0x2300	/*   Current Transmit Descriptor Address */
#define CSR36		0x2400	/*   Next Next Receive Descriptor Address */
#define CSR37		0x2500	/*   Next Next Receive Descriptor Address */
#define CSR38		0x2600	/*   Next Next Transmit Descriptor Address */
#define CSR39		0x2700	/*   Next Next Transmit Descriptor Address */
#define CSR40		0x2800	/*   Current Receive Status and Byte Count */
#define CSR41		0x2900	/*   Current Receive Status and Byte Count */
#define CSR42		0x2a00	/*   Current Transmit Status and Byte Count */
#define CSR43		0x2b00	/*   Current Transmit Status and Byte Count */
#define CSR44		0x2c00	/*   Next Receive Status and Byte Count */
#define CSR45		0x2d00	/*   Next Receive Status and Byte Count */
#define CSR46		0x2e00	/*   Poll Time Counter */
#define CSR47		0x2f00	/*   Polling Interval */
#define CSR48		0x3000	/*   Temporary Storage */
#define CSR49		0x3100	/*   Temporary Storage */
#define CSR50		0x3200	/*   Temporary Storage */
#define CSR51		0x3300	/*   Temporary Storage */
#define CSR52		0x3400	/*   Temporary Storage */
#define CSR53		0x3500	/*   Temporary Storage */
#define CSR54		0x3600	/*   Temporary Storage */
#define CSR55		0x3700	/*   Temporary Storage */
#define CSR56		0x3800	/*   Temporary Storage */
#define CSR57		0x3900	/*   Temporary Storage */
#define CSR58		0x3a00	/*   Temporary Storage */
#define CSR59		0x3b00	/*   Temporary Storage */
#define CSR60		0x3c00	/*   Previous Transmit Descriptor Address */
#define CSR61		0x3d00	/*   Previous Transmit Descriptor Address */
#define CSR62		0x3e00	/*   Previous Transmit Status and Byte Count */
#define CSR63		0x3f00	/*   Previous Transmit Status and Byte Count */
#define CSR64		0x4000	/*   Next Transmit Buffer Address */
#define CSR65		0x4100	/*   Next Transmit Buffer Address */
#define CSR66		0x4200	/*   Next Transmit Status and Byte Count */
#define CSR67		0x4300	/*   Next Transmit Status and Byte Count */
#define CSR68		0x4400	/*   Transmit Status Temporary Storage */
#define CSR69		0x4500	/*   Transmit Status Temporary Storage */
#define CSR70		0x4600	/*   Temporary Storage */
#define CSR71		0x4700	/*   Temporary Storage */
#define CSR72		0x4800	/*   Receive Ring Counter */
#define CSR74		0x4a00	/*   Transmit Ring Counter */
#define CSR76		0x4c00	/* - Receive Ring Length */
#define CSR78		0x4e00	/* - Transmit Ring Length */
#define CSR80		0x5000	/* - Burst and FIFO Threshold Control */
#define CSR82		0x5200	/* - Bus Activity Timer */
#define CSR84		0x5400	/*   DMA Address */
#define CSR85		0x5500	/*   DMA Address */
#define CSR86		0x5600	/*   Buffer Byte Counter */
#define CSR88		0x5800	/* - Chip ID */
#define CSR89		0x5900	/* - Chip ID */
#define CSR92		0x5c00	/*   Ring Length Conversion */
#define CSR94		0x5e00	/*   Transmit Time Domain Reflectometry Count */
#define CSR96		0x6000	/*   Bus Interface Scratch Register 0 */
#define CSR97		0x6100	/*   Bus Interface Scratch Register 0 */
#define CSR98		0x6200	/*   Bus Interface Scratch Register 1 */
#define CSR99		0x6300	/*   Bus Interface Scratch Register 1 */
#define CSR104		0x6800	/*   SWAP */
#define CSR105		0x6900	/*   SWAP */
#define CSR108		0x6c00	/*   Buffer Management Scratch */
#define CSR109		0x6d00	/*   Buffer Management Scratch */
#define CSR112		0x7000	/* - Missed Frame Count */
#define CSR114		0x7200	/* - Receive Collision Count */
#define CSR124		0x7c00	/* - Buffer Management Unit Test */


    /*
     *	Am79C960 ISA Control and Status Registers
     *
     *	These values are already swap()ed!!
     */

#define ISACSR0		0x0000	/* Master Mode Read Active */
#define ISACSR1		0x0100	/* Master Mode Write Active */
#define ISACSR2		0x0200	/* Miscellaneous Configuration */
#define ISACSR4		0x0400	/* LED0 Status (Link Integrity) */
#define ISACSR5		0x0500	/* LED1 Status */
#define ISACSR6		0x0600	/* LED2 Status */
#define ISACSR7		0x0700	/* LED3 Status */


    /*
     *	Bit definitions for CSR0 (PCnet-ISA Controller Status)
     *
     *	These values are already swap()ed!!
     */

#define ERR		0x0080	/* Error */
#define BABL		0x0040	/* Babble: Transmitted too many bits */
#define CERR		0x0020	/* No Heartbeat (10BASE-T) */
#define MISS		0x0010	/* Missed Frame */
#define MERR		0x0008	/* Memory Error */
#define RINT		0x0004	/* Receive Interrupt */
#define TINT		0x0002	/* Transmit Interrupt */
#define IDON		0x0001	/* Initialization Done */
#define INTR		0x8000	/* Interrupt Flag */
#define INEA		0x4000	/* Interrupt Enable */
#define RXON		0x2000	/* Receive On */
#define TXON		0x1000	/* Transmit On */
#define TDMD		0x0800	/* Transmit Demand */
#define STOP		0x0400	/* Stop */
#define STRT		0x0200	/* Start */
#define INIT		0x0100	/* Initialize */


    /*
     *	Bit definitions for CSR3 (Interrupt Masks and Deferral Control)
     *
     *	These values are already swap()ed!!
     */

#define BABLM		0x0040	/* Babble Mask */
#define MISSM		0x0010	/* Missed Frame Mask */
#define MERRM		0x0008	/* Memory Error Mask */
#define RINTM		0x0004	/* Receive Interrupt Mask */
#define TINTM		0x0002	/* Transmit Interrupt Mask */
#define IDONM		0x0001	/* Initialization Done Mask */
#define DXMT2PD		0x1000	/* Disable Transmit Two Part Deferral */
#define EMBA		0x0800	/* Enable Modified Back-off Algorithm */


    /*
     *	Bit definitions for CSR4 (Test and Features Control)
     *
     *	These values are already swap()ed!!
     */

#define ENTST		0x0080	/* Enable Test Mode */
#define DMAPLUS		0x0040	/* Disable Burst Transaction Counter */
#define TIMER		0x0020	/* Timer Enable Register */
#define DPOLL		0x0010	/* Disable Transmit Polling */
#define APAD_XMT	0x0008	/* Auto Pad Transmit */
#define ASTRP_RCV	0x0004	/* Auto Pad Stripping */
#define MFCO		0x0002	/* Missed Frame Counter Overflow Interrupt */
#define MFCOM		0x0001	/* Missed Frame Counter Overflow Mask */
#define RCVCCO		0x2000	/* Receive Collision Counter Overflow Interrupt */
#define RCVCCOM		0x1000	/* Receive Collision Counter Overflow Mask */
#define TXSTRT		0x0800	/* Transmit Start Status */
#define TXSTRTM		0x0400	/* Transmit Start Mask */
#define JAB		0x0200	/* Jabber Error */
#define JABM		0x0100	/* Jabber Error Mask */


    /*
     *	Bit definitions for CSR15 (Mode Register)
     *
     *	These values are already swap()ed!!
     */

#define PROM		0x0080	/* Promiscuous Mode */
#define DRCVBC		0x0040	/* Disable Receive Broadcast */
#define DRCVPA		0x0020	/* Disable Receive Physical Address */
#define DLNKTST		0x0010	/* Disable Link Status */
#define DAPC		0x0008	/* Disable Automatic Polarity Correction */
#define MENDECL		0x0004	/* MENDEC Loopback Mode */
#define LRTTSEL		0x0002	/* Low Receive Treshold/Transmit Mode Select */
#define PORTSEL1	0x0001	/* Port Select Bits */
#define PORTSEL2	0x8000	/* Port Select Bits */
#define INTL		0x4000	/* Internal Loopback */
#define DRTY		0x2000	/* Disable Retry */
#define FCOLL		0x1000	/* Force Collision */
#define DXMTFCS		0x0800	/* Disable Transmit CRC */
#define LOOP		0x0400	/* Loopback Enable */
#define DTX		0x0200	/* Disable Transmitter */
#define DRX		0x0100	/* Disable Receiver */


    /*
     *	Bit definitions for ISACSR2 (Miscellaneous Configuration)
     *
     *	These values are already swap()ed!!
     */

#define ASEL		0x0200	/* Media Interface Port Auto Select */


    /*
     *	Bit definitions for ISACSR5-7 (LED1-3 Status)
     *
     *	These values are already swap()ed!!
     */

#define LEDOUT		0x0080	/* Current LED Status */
#define PSE		0x8000	/* Pulse Stretcher Enable */
#define XMTE		0x1000	/* Enable Transmit Status Signal */
#define RVPOLE		0x0800	/* Enable Receive Polarity Signal */
#define RCVE		0x0400	/* Enable Receive Status Signal */
#define JABE		0x0200	/* Enable Jabber Signal */
#define COLE		0x0100	/* Enable Collision Signal */


    /*
     *	Receive Descriptor Ring Entry
     */

struct RDRE {
    volatile u_short RMD0;	/* LADR[15:0] */
    volatile u_short RMD1;	/* HADR[23:16] | Receive Flags */
    volatile u_short RMD2;	/* Buffer Byte Count (two's complement) */
    volatile u_short RMD3;	/* Message Byte Count */
};


    /*
     *	Transmit Descriptor Ring Entry
     */

struct TDRE {
    volatile u_short TMD0;	/* LADR[15:0] */
    volatile u_short TMD1;	/* HADR[23:16] | Transmit Flags */
    volatile u_short TMD2;	/* Buffer Byte Count (two's complement) */
    volatile u_short TMD3;	/* Error Flags */
};


    /*
     *	Receive Flags
     */

#define RF_OWN		0x0080	/* PCnet-ISA controller owns the descriptor */
#define RF_ERR		0x0040	/* Error */
#define RF_FRAM		0x0020	/* Framing Error */
#define RF_OFLO		0x0010	/* Overflow Error */
#define RF_CRC		0x0008	/* CRC Error */
#define RF_BUFF		0x0004	/* Buffer Error */
#define RF_STP		0x0002	/* Start of Packet */
#define RF_ENP		0x0001	/* End of Packet */


    /*
     *	Transmit Flags
     */

#define TF_OWN		0x0080	/* PCnet-ISA controller owns the descriptor */
#define TF_ERR		0x0040	/* Error */
#define TF_ADD_FCS	0x0020	/* Controls FCS Generation */
#define TF_MORE		0x0010	/* More than one retry needed */
#define TF_ONE		0x0008	/* One retry needed */
#define TF_DEF		0x0004	/* Deferred */
#define TF_STP		0x0002	/* Start of Packet */
#define TF_ENP		0x0001	/* End of Packet */


    /*
     *	Error Flags
     */

#define EF_BUFF		0x0080	/* Buffer Error */
#define EF_UFLO		0x0040	/* Underflow Error */
#define EF_LCOL		0x0010	/* Late Collision */
#define EF_LCAR		0x0008	/* Loss of Carrier */
#define EF_RTRY		0x0004	/* Retry Error */
#define EF_TDR		0xff03	/* Time Domain Reflectometry */



    /*
     *	MC68230 Parallel Interface/Timer
     */

struct MC68230 {
    volatile u_char PGCR;	/* Port General Control Register */
    u_char Pad1[1];
    volatile u_char PSRR;	/* Port Service Request Register */
    u_char Pad2[1];
    volatile u_char PADDR;	/* Port A Data Direction Register */
    u_char Pad3[1];
    volatile u_char PBDDR;	/* Port B Data Direction Register */
    u_char Pad4[1];
    volatile u_char PCDDR;	/* Port C Data Direction Register */
    u_char Pad5[1];
    volatile u_char PIVR;	/* Port Interrupt Vector Register */
    u_char Pad6[1];
    volatile u_char PACR;	/* Port A Control Register */
    u_char Pad7[1];
    volatile u_char PBCR;	/* Port B Control Register */
    u_char Pad8[1];
    volatile u_char PADR;	/* Port A Data Register */
    u_char Pad9[1];
    volatile u_char PBDR;	/* Port B Data Register */
    u_char Pad10[1];
    volatile u_char PAAR;	/* Port A Alternate Register */
    u_char Pad11[1];
    volatile u_char PBAR;	/* Port B Alternate Register */
    u_char Pad12[1];
    volatile u_char PCDR;	/* Port C Data Register */
    u_char Pad13[1];
    volatile u_char PSR;	/* Port Status Register */
    u_char Pad14[5];
    volatile u_char TCR;	/* Timer Control Register */
    u_char Pad15[1];
    volatile u_char TIVR;	/* Timer Interrupt Vector Register */
    u_char Pad16[3];
    volatile u_char CPRH;	/* Counter Preload Register (High) */
    u_char Pad17[1];
    volatile u_char CPRM;	/* Counter Preload Register (Mid) */
    u_char Pad18[1];
    volatile u_char CPRL;	/* Counter Preload Register (Low) */
    u_char Pad19[3];
    volatile u_char CNTRH;	/* Count Register (High) */
    u_char Pad20[1];
    volatile u_char CNTRM;	/* Count Register (Mid) */
    u_char Pad21[1];
    volatile u_char CNTRL;	/* Count Register (Low) */
    u_char Pad22[1];
    volatile u_char TSR;	/* Timer Status Register */
    u_char Pad23[11];
};


    /*
     *	Ariadne Expansion Board Structure
     */

#define ARIADNE_LANCE		0x360

#define ARIADNE_PIT		0x1000

#define ARIADNE_BOOTPROM	0x4000	/* I guess it's here :-) */
#define ARIADNE_BOOTPROM_SIZE	0x4000

#define ARIADNE_RAM		0x8000	/* Always access WORDs!! */
#define ARIADNE_RAM_SIZE	0x8000