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
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
|
/*
* National Semiconductor DS8390 NIC register definitions
*
* $Log: if_edreg.h,v $
* Revision 1.3 93/07/20 15:25:25 davidg
* added config flags for forcing 8/16bit mode and disabling double
* xmit buffers.
*
* Revision 1.2 93/06/23 03:03:05 davidg
* added some additional definitions for the 83C584 bus interface
* chip (SMC/WD boards)
*
* Revision 1.1 93/06/23 03:01:07 davidg
* Initial revision
*
*/
/*
* Page 0 register offsets
*/
#define ED_P0_CR 0x00 /* Command Register */
#define ED_P0_CLDA0 0x01 /* Current Local DMA Addr low (read) */
#define ED_P0_PSTART 0x01 /* Page Start register (write) */
#define ED_P0_CLDA1 0x02 /* Current Local DMA Addr high (read) */
#define ED_P0_PSTOP 0x02 /* Page Stop register (write) */
#define ED_P0_BNRY 0x03 /* Boundary Pointer */
#define ED_P0_TSR 0x04 /* Transmit Status Register (read) */
#define ED_P0_TPSR 0x04 /* Transmit Page Start (write) */
#define ED_P0_NCR 0x05 /* Number of Collisions Reg (read) */
#define ED_P0_TBCR0 0x05 /* Transmit Byte count, low (write) */
#define ED_P0_FIFO 0x06 /* FIFO register (read) */
#define ED_P0_TBCR1 0x06 /* Transmit Byte count, high (write) */
#define ED_P0_ISR 0x07 /* Interrupt Status Register */
#define ED_P0_CRDA0 0x08 /* Current Remote DMA Addr low (read) */
#define ED_P0_RSAR0 0x08 /* Remote Start Address low (write) */
#define ED_P0_CRDA1 0x09 /* Current Remote DMA Addr high (read) */
#define ED_P0_RSAR1 0x09 /* Remote Start Address high (write) */
#define ED_P0_RBCR0 0x0a /* Remote Byte Count low (write) */
#define ED_P0_RBCR1 0x0b /* Remote Byte Count high (write) */
#define ED_P0_RSR 0x0c /* Receive Status (read) */
#define ED_P0_RCR 0x0c /* Receive Configuration Reg (write) */
#define ED_P0_CNTR0 0x0d /* frame alignment error counter (read) */
#define ED_P0_TCR 0x0d /* Transmit Configuration Reg (write) */
#define ED_P0_CNTR1 0x0e /* CRC error counter (read) */
#define ED_P0_DCR 0x0e /* Data Configuration Reg (write) */
#define ED_P0_CNTR2 0x0f /* missed packet counter (read) */
#define ED_P0_IMR 0x0f /* Interrupt Mask Register (write) */
/*
* Page 1 register offsets
*/
#define ED_P1_CR 0x00 /* Command Register */
#define ED_P1_PAR0 0x01 /* Physical Address Register 0 */
#define ED_P1_PAR1 0x02 /* Physical Address Register 1 */
#define ED_P1_PAR2 0x03 /* Physical Address Register 2 */
#define ED_P1_PAR3 0x04 /* Physical Address Register 3 */
#define ED_P1_PAR4 0x05 /* Physical Address Register 4 */
#define ED_P1_PAR5 0x06 /* Physical Address Register 5 */
#define ED_P1_CURR 0x07 /* Current RX ring-buffer page */
#define ED_P1_MAR0 0x08 /* Multicast Address Register 0 */
#define ED_P1_MAR1 0x09 /* Multicast Address Register 1 */
#define ED_P1_MAR2 0x0a /* Multicast Address Register 2 */
#define ED_P1_MAR3 0x0b /* Multicast Address Register 3 */
#define ED_P1_MAR4 0x0c /* Multicast Address Register 4 */
#define ED_P1_MAR5 0x0d /* Multicast Address Register 5 */
#define ED_P1_MAR6 0x0e /* Multicast Address Register 6 */
#define ED_P1_MAR7 0x0f /* Multicast Address Register 7 */
/*
* Page 2 register offsets
*/
#define ED_P2_CR 0x00 /* Command Register */
#define ED_P2_PSTART 0x01 /* Page Start (read) */
#define ED_P2_CLDA0 0x01 /* Current Local DMA Addr 0 (write) */
#define ED_P2_PSTOP 0x02 /* Page Stop (read) */
#define ED_P2_CLDA1 0x02 /* Current Local DMA Addr 1 (write) */
#define ED_P2_RNPP 0x03 /* Remote Next Packet Pointer */
#define ED_P2_TPSR 0x04 /* Transmit Page Start (read) */
#define ED_P2_LNPP 0x05 /* Local Next Packet Pointer */
#define ED_P2_ACU 0x06 /* Address Counter Upper */
#define ED_P2_ACL 0x07 /* Address Counter Lower */
#define ED_P2_RCR 0x0c /* Receive Configuration Register (read) */
#define ED_P2_TCR 0x0d /* Transmit Configuration Register (read) */
#define ED_P2_DCR 0x0e /* Data Configuration Register (read) */
#define ED_P2_IMR 0x0f /* Interrupt Mask Register (read) */
/*
* Command Register (CR) definitions
*/
/*
* STP: SToP. Software reset command. Takes the controller offline. No
* packets will be received or transmitted. Any reception or
* transmission in progress will continue to completion before
* entering reset state. To exit this state, the STP bit must
* reset and the STA bit must be set. The software reset has
* executed only when indicated by the RST bit in the ISR being
* set.
*/
#define ED_CR_STP 0x01
/*
* STA: STArt. This bit is used to activate the NIC after either power-up,
* or when the NIC has been put in reset mode by software command
* or error.
*/
#define ED_CR_STA 0x02
/*
* TXP: Transmit Packet. This bit must be set to indicate transmission of
* a packet. TXP is internally reset either after the transmission is
* completed or aborted. This bit should be set only after the Transmit
* Byte Count and Transmit Page Start register have been programmed.
*/
#define ED_CR_TXP 0x04
/*
* RD0, RD1, RD2: Remote DMA Command. These three bits control the operation
* of the remote DMA channel. RD2 can be set to abort any remote DMA
* command in progress. The Remote Byte Count registers should be cleared
* when a remote DMA has been aborted. The Remote Start Addresses are not
* restored to the starting address if the remote DMA is aborted.
*
* RD2 RD1 RD0 function
* 0 0 0 not allowed
* 0 0 1 remote read
* 0 1 0 remote write
* 0 1 1 send packet
* 1 X X abort
*/
#define ED_CR_RD0 0x08
#define ED_CR_RD1 0x10
#define ED_CR_RD2 0x20
/*
* PS0, PS1: Page Select. The two bits select which register set or 'page' to
* access.
*
* PS1 PS0 page
* 0 0 0
* 0 1 1
* 1 0 2
* 1 1 reserved
*/
#define ED_CR_PS0 0x40
#define ED_CR_PS1 0x80
/* bit encoded aliases */
#define ED_CR_PAGE_0 0x00 /* (for consistency) */
#define ED_CR_PAGE_1 0x40
#define ED_CR_PAGE_2 0x80
/*
* Interrupt Status Register (ISR) definitions
*/
/*
* PRX: Packet Received. Indicates packet received with no errors.
*/
#define ED_ISR_PRX 0x01
/*
* PTX: Packet Transmitted. Indicates packet transmitted with no errors.
*/
#define ED_ISR_PTX 0x02
/*
* RXE: Receive Error. Indicates that a packet was received with one or more
* the following errors: CRC error, frame alignment error, FIFO overrun,
* missed packet.
*/
#define ED_ISR_RXE 0x04
/*
* TXE: Transmission Error. Indicates that an attempt to transmit a packet
* resulted in one or more of the following errors: excessive
* collisions, FIFO underrun.
*/
#define ED_ISR_TXE 0x08
/*
* OVW: OverWrite. Indicates a receive ring-buffer overrun. Incoming network
* would exceed (has exceeded?) the boundry pointer, resulting in data
* that was previously received and not yet read from the buffer to be
* overwritten.
*/
#define ED_ISR_OVW 0x10
/*
* CNT: Counter Overflow. Set when the MSB of one or more of the Network Talley
* Counters has been set.
*/
#define ED_ISR_CNT 0x20
/*
* RDC: Remote Data Complete. Indicates that a Remote DMA operation has completed.
*/
#define ED_ISR_RDC 0x40
/*
* RST: Reset status. Set when the NIC enters the reset state and cleared when a
* Start Command is issued to the CR. This bit is also set when a receive
* ring-buffer overrun (OverWrite) occurs and is cleared when one or more
* packets have been removed from the ring. This is a read-only bit.
*/
#define ED_ISR_RST 0x80
/*
* Interrupt Mask Register (IMR) definitions
*/
/*
* PRXE: Packet Received interrupt Enable. If set, a received packet will cause
* an interrupt.
*/
#define ED_IMR_PRXE 0x01
/*
* PTXE: Packet Transmit interrupt Enable. If set, an interrupt is generated when
* a packet transmission completes.
*/
#define ED_IMR_PTXE 0x02
/*
* RXEE: Receive Error interrupt Enable. If set, an interrupt will occur whenever a
* packet is received with an error.
*/
#define ED_IMR_RXEE 0x04
/*
* TXEE: Transmit Error interrupt Enable. If set, an interrupt will occur whenever
* a transmission results in an error.
*/
#define ED_IMR_TXEE 0x08
/*
* OVWE: OverWrite error interrupt Enable. If set, an interrupt is generated whenever
* the receive ring-buffer is overrun. i.e. when the boundry pointer is exceeded.
*/
#define ED_IMR_OVWE 0x10
/*
* CNTE: Counter overflow interrupt Enable. If set, an interrupt is generated whenever
* the MSB of one or more of the Network Statistics counters has been set.
*/
#define ED_IMR_CNTE 0x20
/*
* RDCE: Remote DMA Complete interrupt Enable. If set, an interrupt is generated
* when a remote DMA transfer has completed.
*/
#define ED_IMR_RDCE 0x40
/*
* bit 7 is unused/reserved
*/
/*
* Data Configuration Register (DCR) definitions
*/
/*
* WTS: Word Transfer Select. WTS establishes byte or word transfers for
* both remote and local DMA transfers
*/
#define ED_DCR_WTS 0x01
/*
* BOS: Byte Order Select. BOS sets the byte order for the host.
* Should be 0 for 80x86, and 1 for 68000 series processors
*/
#define ED_DCR_BOS 0x02
/*
* LAS: Long Address Select. When LAS is 1, the contents of the remote
* DMA registers RSAR0 and RSAR1 are used to provide A16-A31
*/
#define ED_DCR_LAS 0x04
/*
* LS: Loopback Select. When 0, loopback mode is selected. Bits D1 and D2
* of the TCR must also be programmed for loopback operation.
* When 1, normal operation is selected.
*/
#define ED_DCR_LS 0x08
/*
* AR: Auto-initialize Remote. When 0, data must be removed from ring-buffer
* under program control. When 1, remote DMA is automatically initiated
* and the boundry pointer is automatically updated
*/
#define ED_DCR_AR 0x10
/*
* FT0, FT1: Fifo Threshold select.
* FT1 FT0 Word-width Byte-width
* 0 0 1 word 2 bytes
* 0 1 2 words 4 bytes
* 1 0 4 words 8 bytes
* 1 1 8 words 12 bytes
*
* During transmission, the FIFO threshold indicates the number of bytes
* or words that the FIFO has filled from the local DMA before BREQ is
* asserted. The transmission threshold is 16 bytes minus the receiver
* threshold.
*/
#define ED_DCR_FT0 0x20
#define ED_DCR_FT1 0x40
/*
* bit 7 (0x80) is unused/reserved
*/
/*
* Transmit Configuration Register (TCR) definitions
*/
/*
* CRC: Inhibit CRC. If 0, CRC will be appended by the transmitter, if 0, CRC
* is not appended by the transmitter.
*/
#define ED_TCR_CRC 0x01
/*
* LB0, LB1: Loopback control. These two bits set the type of loopback that is
* to be performed.
*
* LB1 LB0 mode
* 0 0 0 - normal operation (DCR_LS = 0)
* 0 1 1 - internal loopback (DCR_LS = 0)
* 1 0 2 - external loopback (DCR_LS = 1)
* 1 1 3 - external loopback (DCR_LS = 0)
*/
#define ED_TCR_LB0 0x02
#define ED_TCR_LB1 0x04
/*
* ATD: Auto Transmit Disable. Clear for normal operation. When set, allows
* another station to disable the NIC's transmitter by transmitting to
* a multicast address hashing to bit 62. Reception of a multicast address
* hashing to bit 63 enables the transmitter.
*/
#define ED_TCR_ATD 0x08
/*
* OFST: Collision Offset enable. This bit when set modifies the backoff
* algorithm to allow prioritization of nodes.
*/
#define ED_TCR_OFST 0x10
/*
* bits 5, 6, and 7 are unused/reserved
*/
/*
* Transmit Status Register (TSR) definitions
*/
/*
* PTX: Packet Transmitted. Indicates successful transmission of packet.
*/
#define ED_TSR_PTX 0x01
/*
* bit 1 (0x02) is unused/reserved
*/
/*
* COL: Transmit Collided. Indicates that the transmission collided at least
* once with another station on the network.
*/
#define ED_TSR_COL 0x04
/*
* ABT: Transmit aborted. Indicates that the transmission was aborted due to
* excessive collisions.
*/
#define ED_TSR_ABT 0x08
/*
* CRS: Carrier Sense Lost. Indicates that carrier was lost during the
* transmission of the packet. (Transmission is not aborted because
* of a loss of carrier)
*/
#define ED_TSR_CRS 0x10
/*
* FU: FIFO Underrun. Indicates that the NIC wasn't able to access bus/
* transmission memory before the FIFO emptied. Transmission of the
* packet was aborted.
*/
#define ED_TSR_FU 0x20
/*
* CDH: CD Heartbeat. Indicates that the collision detection circuitry
* isn't working correctly during a collision heartbeat test.
*/
#define ED_TSR_CDH 0x40
/*
* OWC: Out of Window Collision: Indicates that a collision occurred after
* a slot time (51.2us). The transmission is rescheduled just as in
* normal collisions.
*/
#define ED_TSR_OWC 0x80
/*
* Receiver Configuration Register (RCR) definitions
*/
/*
* SEP: Save Errored Packets. If 0, error packets are discarded. If set to 1,
* packets with CRC and frame errors are not discarded.
*/
#define ED_RCR_SEP 0x01
/*
* AR: Accept Runt packet. If 0, packet with less than 64 byte are discarded.
* If set to 1, packets with less than 64 byte are not discarded.
*/
#define ED_RCR_AR 0x02
/*
* AB: Accept Broadcast. If set, packets sent to the broadcast address will be
* accepted.
*/
#define ED_RCR_AB 0x04
/*
* AM: Accept Multicast. If set, packets sent to a multicast address are checked
* for a match in the hashing array. If clear, multicast packets are ignored.
*/
#define ED_RCR_AM 0x08
/*
* PRO: Promiscuous Physical. If set, all packets with a physical addresses are
* accepted. If clear, a physical destination address must match this
* station's address. Note: for full promiscuous mode, RCR_AB and RCR_AM
* must also be set. In addition, the multicast hashing array must be set
* to all 1's so that all multicast addresses are accepted.
*/
#define ED_RCR_PRO 0x10
/*
* MON: Monitor Mode. If set, packets will be checked for good CRC and framing,
* but are not stored in the ring-buffer. If clear, packets are stored (normal
* operation).
*/
#define ED_RCR_MON 0x20
/*
* bits 6 and 7 are unused/reserved.
*/
/*
* Receiver Status Register (RSR) definitions
*/
/*
* PRX: Packet Received without error.
*/
#define ED_RSR_PRX 0x01
/*
* CRC: CRC error. Indicates that a packet has a CRC error. Also set for frame
* alignment errors.
*/
#define ED_RSR_CRC 0x02
/*
* FAE: Frame Alignment Error. Indicates that the incoming packet did not end on
* a byte boundry and the CRC did not match at the last byte boundry.
*/
#define ED_RSR_FAE 0x04
/*
* FO: FIFO Overrun. Indicates that the FIFO was not serviced (during local DMA)
* causing it to overrun. Reception of the packet is aborted.
*/
#define ED_RSR_FO 0x08
/*
* MPA: Missed Packet. Indicates that the received packet couldn't be stored in
* the ring-buffer because of insufficient buffer space (exceeding the
* boundry pointer), or because the transfer to the ring-buffer was inhibited
* by RCR_MON - monitor mode.
*/
#define ED_RSR_MPA 0x10
/*
* PHY: Physical address. If 0, the packet received was sent to a physical address.
* If 1, the packet was accepted because of a multicast/broadcast address
* match.
*/
#define ED_RSR_PHY 0x20
/*
* DIS: Receiver Disabled. Set to indicate that the receiver has enetered monitor
* mode. Cleared when the receiver exits monitor mode.
*/
#define ED_RSR_DIS 0x40
/*
* DFR: Deferring. Set to indicate a 'jabber' condition. The CRS and COL inputs
* are active, and the transceiver has set the CD line as a result of the
* jabber.
*/
#define ED_RSR_DFR 0x80
/*
* receive ring discriptor
*
* The National Semiconductor DS8390 Network interface controller uses
* the following receive ring headers. The way this works is that the
* memory on the interface card is chopped up into 256 bytes blocks.
* A contiguous portion of those blocks are marked for receive packets
* by setting start and end block #'s in the NIC. For each packet that
* is put into the receive ring, one of these headers (4 bytes each) is
* tacked onto the front.
*/
struct ed_ring {
struct edr_status { /* received packet status */
u_char rs_prx:1, /* packet received intack */
rs_crc:1, /* crc error */
rs_fae:1, /* frame alignment error */
rs_fo:1, /* fifo overrun */
rs_mpa:1, /* packet received intack */
rs_phy:1, /* packet received intack */
rs_dis:1, /* packet received intack */
rs_dfr:1; /* packet received intack */
} ed_rcv_status; /* received packet status */
u_char next_packet; /* pointer to next packet */
u_short count; /* bytes in packet (length + 4) */
};
/*
* Common constants
*/
#define ED_PAGE_SIZE 256 /* Size of RAM pages in bytes */
#define ED_TXBUF_SIZE 6 /* Size of TX buffer in pages */
/*
* Vendor types
*/
#define ED_VENDOR_WD_SMC 0x00 /* Western Digital/SMC */
#define ED_VENDOR_3COM 0x01 /* 3Com */
/*
* Compile-time config flags
*/
/*
* this sets the default for enabling/disablng the tranceiver
*/
#define ED_FLAGS_DISABLE_TRANCEIVER 0x01
/*
* This forces the board to be used in 8/16bit mode even if it
* autoconfigs differently
*/
#define ED_FLAGS_FORCE_8BIT_MODE 0x02
#define ED_FLAGS_FORCE_16BIT_MODE 0x04
/*
* This disables the use of double transmit buffers.
*/
#define ED_FLAGS_NO_DOUBLE_BUFFERING 0x08
/*
* Definitions for Western digital/SMC WD80x3 series ASIC
*/
/*
* Memory Select Register (MSR)
*/
#define ED_WD_MSR 0
#define ED_WD_MSR_ADDR 0x3f /* Memory decode bits 18-13 */
#define ED_WD_MSR_MENB 0x40 /* Memory enable */
#define ED_WD_MSR_RST 0x80 /* Reset board */
/*
* Interface Configuration Register (ICR)
*/
#define ED_WD_ICR 1
#define ED_WD_ICR_16BIT 0x01 /* 16-bit interface */
#define ED_WD_ICR_OAR 0x02 /* select register. 0=BIO 1=EAR */
#define ED_WD_ICR_IR2 0x04 /* high order bit of encoded IRQ */
#define ED_WD_ICR_MSZ 0x08 /* memory size (0=8k 1=32k) */
#define ED_WD_ICR_RLA 0x10 /* recall LAN address */
#define ED_WD_ICR_RX7 0x20 /* recall all but i/o and LAN address */
#define ED_WD_ICR_RIO 0x40 /* recall i/o address */
#define ED_WD_ICR_STO 0x80 /* store to non-volatile memory */
/*
* IO Address Register (IAR)
*/
#define ED_WD_IAR 2
/*
* EEROM Address Register
*/
#define ED_WD_EAR 3
/*
* Interrupt Request Register (IRR)
*/
#define ED_WD_IRR 4
#define ED_WD_IRR_0WS 0x01 /* use 0 wait-states on 8 bit bus */
#define ED_WD_IRR_OUT1 0x02 /* WD83C584 pin 1 output */
#define ED_WD_IRR_OUT2 0x04 /* WD83C584 pin 2 output */
#define ED_WD_IRR_OUT3 0x08 /* WD83C584 pin 3 output */
#define ED_WD_IRR_FLASH 0x10 /* Flash RAM is in the ROM socket */
/*
* The three bit of the encoded IRQ are decoded as follows:
*
* IR2 IR1 IR0 IRQ
* 0 0 0 2/9
* 0 0 1 3
* 0 1 0 5
* 0 1 1 7
* 1 0 0 10
* 1 0 1 11
* 1 1 0 15
* 1 1 1 4
*/
#define ED_WD_IRR_IR0 0x20 /* bit 0 of encoded IRQ */
#define ED_WD_IRR_IR1 0x40 /* bit 1 of encoded IRQ */
#define ED_WD_IRR_IEN 0x80 /* Interrupt enable */
/*
* LA Address Register (LAAR)
*/
#define ED_WD_LAAR 5
#define ED_WD_LAAR_ADDRHI 0x1f /* bits 23-19 of RAM address */
#define ED_WD_LAAR_0WS16 0x20 /* enable 0 wait-states on 16 bit bus */
#define ED_WD_LAAR_L16EN 0x40 /* enable 16-bit operation */
#define ED_WD_LAAR_M16EN 0x80 /* enable 16-bit memory access */
/* i/o base offset to station address/card-ID PROM */
#define ED_WD_PROM 8
/* i/o base offset to CARD ID */
#define ED_WD_CARD_ID ED_WD_PROM+6
#define ED_TYPE_WD8003S 0x02
#define ED_TYPE_WD8003E 0x03
#define ED_TYPE_WD8013EBT 0x05
#define ED_TYPE_WD8013EB 0x27
#define ED_TYPE_WD8013EBP 0x2c
#define ED_TYPE_WD8013EPC 0x29
/* Bit definitions in card ID */
#define ED_WD_REV_MASK 0x1f /* Revision mask */
#define ED_WD_SOFTCONFIG 0x20 /* Soft config */
#define ED_WD_LARGERAM 0x40 /* Large RAM */
#define ED_MICROCHANEL 0x80 /* Microchannel bus (vs. isa) */
/*
* Checksum total. All 8 bytes in station address PROM will add up to this
*/
#define ED_WD_ROM_CHECKSUM_TOTAL 0xFF
#define ED_WD_NIC_OFFSET 0x10 /* I/O base offset to NIC */
#define ED_WD_ASIC_OFFSET 0 /* I/O base offset to ASIC */
#define ED_WD_IO_PORTS 32 /* # of i/o addresses used */
#define ED_WD_PAGE_OFFSET 0 /* page offset for NIC access to mem */
/*
* Definitions for 3Com 3c503
*/
#define ED_3COM_NIC_OFFSET 0
#define ED_3COM_ASIC_OFFSET 0x400 /* offset to nic i/o regs */
/*
* XXX - The I/O address range is fragmented in the 3c503; this is the
* number of regs at iobase.
*/
#define ED_3COM_IO_PORTS 16 /* # of i/o addresses used */
#define ED_3COM_PAGE_OFFSET 0x20 /* memory starts in second bank */
/*
* Page Start Register. Must match PSTART in NIC
*/
#define ED_3COM_PSTR 0
/*
* Page Stop Register. Must match PSTOP in NIC
*/
#define ED_3COM_PSPR 1
/*
* Drq Timer Register. Determines number of bytes to be transfered during
* a DMA burst.
*/
#define ED_3COM_DQTR 2
/*
* Base Configuration Register. Read-only register which contains the
* board-configured I/O base address of the adapter. Bit encoded.
*/
#define ED_3COM_BCFR 3
#define ED_3COM_BCFR_2E0 0x01
#define ED_3COM_BCFR_2A0 0x02
#define ED_3COM_BCFR_280 0x04
#define ED_3COM_BCFR_250 0x08
#define ED_3COM_BCFR_350 0x10
#define ED_3COM_BCFR_330 0x20
#define ED_3COM_BCFR_310 0x40
#define ED_3COM_BCFR_300 0x80
/*
* EPROM Configuration Register. Read-only register which contains the
* board-configured memory base address. Bit encoded.
*/
#define ED_3COM_PCFR 4
#define ED_3COM_PCFR_C8000 0x10
#define ED_3COM_PCFR_CC000 0x20
#define ED_3COM_PCFR_D8000 0x40
#define ED_3COM_PCFR_DC000 0x80
/*
* GA Configuration Register. Gate-Array Configuration Register.
*/
#define ED_3COM_GACFR 5
/*
* mbs2 mbs1 mbs0 start address
* 0 0 0 0x0000
* 0 0 1 0x2000
* 0 1 0 0x4000
* 0 1 1 0x6000
*
* Note that with adapters with only 8K, the setting for 0x2000 must
* always be used.
*/
#define ED_3COM_GACFR_MBS0 0x01
#define ED_3COM_GACFR_MBS1 0x02
#define ED_3COM_GACFR_MBS2 0x04
#define ED_3COM_GACFR_RSEL 0x08 /* enable shared memory */
#define ED_3COM_GACFR_TEST 0x10 /* for GA testing */
#define ED_3COM_GACFR_OWS 0x20 /* select 0WS access to GA */
#define ED_3COM_GACFR_TCM 0x40 /* Mask DMA interrupts */
#define ED_3COM_GACFR_NIM 0x80 /* Mask NIC interrupts */
/*
* Control Register. Miscellaneous control functions.
*/
#define ED_3COM_CR 6
#define ED_3COM_CR_RST 0x01 /* Reset GA and NIC */
#define ED_3COM_CR_XSEL 0x02 /* Transceiver select. BNC=1(def) AUI=0 */
#define ED_3COM_CR_EALO 0x04 /* window EA PROM 0-15 to I/O base */
#define ED_3COM_CR_EAHI 0x08 /* window EA PROM 16-31 to I/O base */
#define ED_3COM_CR_SHARE 0x10 /* select interrupt sharing option */
#define ED_3COM_CR_DBSEL 0x20 /* Double buffer select */
#define ED_3COM_CR_DDIR 0x40 /* DMA direction select */
#define ED_3COM_CR_START 0x80 /* Start DMA controller */
/*
* Status Register. Miscellaneous status information.
*/
#define ED_3COM_STREG 7
#define ED_3COM_STREG_REV 0x07 /* GA revision */
#define ED_3COM_STREG_DIP 0x08 /* DMA in progress */
#define ED_3COM_STREG_DTC 0x10 /* DMA terminal count */
#define ED_3COM_STREG_OFLW 0x20 /* Overflow */
#define ED_3COM_STREG_UFLW 0x40 /* Underflow */
#define ED_3COM_STREG_DPRDY 0x80 /* Data port ready */
/*
* Interrupt/DMA Configuration Register
*/
#define ED_3COM_IDCFR 8
#define ED_3COM_IDCFR_DRQ0 0x01 /* DMA request 1 select */
#define ED_3COM_IDCFR_DRQ1 0x02 /* DMA request 2 select */
#define ED_3COM_IDCFR_DRQ2 0x04 /* DMA request 3 select */
#define ED_3COM_IDCFR_UNUSED 0x08 /* not used */
#define ED_3COM_IDCFR_IRQ2 0x10 /* Interrupt request 2 select */
#define ED_3COM_IDCFR_IRQ3 0x20 /* Interrupt request 3 select */
#define ED_3COM_IDCFR_IRQ4 0x40 /* Interrupt request 4 select */
#define ED_3COM_IDCFR_IRQ5 0x80 /* Interrupt request 5 select */
/*
* DMA Address Register MSB
*/
#define ED_3COM_DAMSB 9
/*
* DMA Address Register LSB
*/
#define ED_3COM_DALSB 0x0a
/*
* Vector Pointer Register 2
*/
#define ED_3COM_VPTR2 0x0b
/*
* Vector Pointer Register 1
*/
#define ED_3COM_VPTR1 0x0c
/*
* Vector Pointer Register 0
*/
#define ED_3COM_VPTR0 0x0d
/*
* Register File Access MSB
*/
#define ED_3COM_RFMSB 0x0e
/*
* Register File Access LSB
*/
#define ED_3COM_RFLSB 0x0f
|