summaryrefslogtreecommitdiffstats
path: root/src/drivers/net/ns8390.c
blob: 0ffc6216ba2f62c081cc856844bd02bfcdbe54ab (plain) (blame)
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
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
/**************************************************************************
ETHERBOOT -  BOOTP/TFTP Bootstrap Program

Author: Martin Renters
  Date: May/94

 This code is based heavily on David Greenman's if_ed.c driver

 Copyright (C) 1993-1994, David Greenman, Martin Renters.
  This software may be used, modified, copied, distributed, and sold, in
  both source and binary form provided that the above copyright and these
  terms are retained. Under no circumstances are the authors responsible for
  the proper functioning of this software, nor do the authors assume any
  responsibility for damages incurred with its use.

Multicast support added by Timothy Legge (timlegge@users.sourceforge.net) 09/28/2003
Relocation support added by Ken Yap (ken_yap@users.sourceforge.net) 28/12/02
3c503 support added by Bill Paul (wpaul@ctr.columbia.edu) on 11/15/94
SMC8416 support added by Bill Paul (wpaul@ctr.columbia.edu) on 12/25/94
3c503 PIO support added by Jim Hague (jim.hague@acm.org) on 2/17/98
RX overrun by Klaus Espenlaub (espenlaub@informatik.uni-ulm.de) on 3/10/99
  parts taken from the Linux 8390 driver (by Donald Becker and Paul Gortmaker)
SMC8416 PIO support added by Andrew Bettison (andrewb@zip.com.au) on 4/3/02
  based on the Linux 8390 driver (by Donald Becker and Paul Gortmaker)

**************************************************************************/

FILE_LICENCE ( BSD2 );

/* #warning "ns8390.c: FIXME: split ISA and PCI, clean up" */

#if 1

#if !defined(INCLUDE_NS8390) && !defined(INCLUDE_WD) && \
    !defined(INCLUDE_NE) && !defined(INCLUDE_3C503)
  /* The driver named ns8390 is the PCI driver, often called
     "PCI ne2000 clones". */
# define INCLUDE_NS8390 1
#endif

#include "etherboot.h"
#include "nic.h"
#include "ns8390.h"
#include <ipxe/ethernet.h>
#ifdef	INCLUDE_NS8390
#include <ipxe/pci.h>
#else
#include <ipxe/isa.h>
#endif

static unsigned char	eth_vendor, eth_flags;
#ifdef	INCLUDE_WD
static unsigned char	eth_laar;
#endif
static unsigned short	eth_nic_base, eth_asic_base;
static unsigned char	eth_memsize, eth_rx_start, eth_tx_start;
static Address		eth_bmem, eth_rmem;
static unsigned char	eth_drain_receiver;

#ifdef	INCLUDE_WD
static struct wd_board {
	const char *name;
	char id;
	char flags;
	char memsize;
} wd_boards[] = {
	{"WD8003S",	TYPE_WD8003S,	0,			MEM_8192},
	{"WD8003E",	TYPE_WD8003E,	0,			MEM_8192},
	{"WD8013EBT",	TYPE_WD8013EBT,	FLAG_16BIT,		MEM_16384},
	{"WD8003W",	TYPE_WD8003W,	0,			MEM_8192},
	{"WD8003EB",	TYPE_WD8003EB,	0,			MEM_8192},
	{"WD8013W",	TYPE_WD8013W,	FLAG_16BIT,		MEM_16384},
	{"WD8003EP/WD8013EP",
			TYPE_WD8013EP,	0,			MEM_8192},
	{"WD8013WC",	TYPE_WD8013WC,	FLAG_16BIT,		MEM_16384},
	{"WD8013EPC",	TYPE_WD8013EPC,	FLAG_16BIT,		MEM_16384},
	{"SMC8216T",	TYPE_SMC8216T,	FLAG_16BIT | FLAG_790,	MEM_16384},
	{"SMC8216C",	TYPE_SMC8216C,	FLAG_16BIT | FLAG_790,	MEM_16384},
	{"SMC8416T",	TYPE_SMC8416T,	FLAG_16BIT | FLAG_790,	MEM_8192},
	{"SMC8416C/BT",	TYPE_SMC8416C,	FLAG_16BIT | FLAG_790,	MEM_8192},
	{"SMC8013EBP",	TYPE_SMC8013EBP,FLAG_16BIT,		MEM_16384},
	{NULL,		0,		0,			0}
};
#endif

#ifdef	INCLUDE_3C503
static unsigned char	t503_output;	/* AUI or internal xcvr (Thinnet) */
#endif

#if	defined(INCLUDE_WD)
#define	ASIC_PIO	WD_IAR
#define	eth_probe	wd_probe
#if	defined(INCLUDE_3C503) || defined(INCLUDE_NE) || defined(INCLUDE_NS8390)
Error you must only define one of INCLUDE_WD, INCLUDE_3C503, INCLUDE_NE, INCLUDE_NS8390
#endif
#endif

#if	defined(INCLUDE_3C503)
#define	eth_probe	t503_probe
#if	defined(INCLUDE_NE) || defined(INCLUDE_NS8390) || defined(INCLUDE_WD)
Error you must only define one of INCLUDE_WD, INCLUDE_3C503, INCLUDE_NE, INCLUDE_NS8390
#endif
#endif

#if	defined(INCLUDE_NE)
#define	eth_probe	ne_probe
#if	defined(INCLUDE_NS8390) || defined(INCLUDE_3C503) || defined(INCLUDE_WD)
Error you must only define one of INCLUDE_WD, INCLUDE_3C503, INCLUDE_NE, INCLUDE_NS8390
#endif
#endif

#if	defined(INCLUDE_NS8390)
#define	eth_probe	nepci_probe
#if	defined(INCLUDE_NE) || defined(INCLUDE_3C503) || defined(INCLUDE_WD)
Error you must only define one of INCLUDE_WD, INCLUDE_3C503, INCLUDE_NE, INCLUDE_NS8390
#endif
#endif

#if	defined(INCLUDE_3C503)
#define	ASIC_PIO	_3COM_RFMSB
#else
#if	defined(INCLUDE_NE) || defined(INCLUDE_NS8390)
#define	ASIC_PIO	NE_DATA
#endif
#endif

#if	defined(INCLUDE_NE) || defined(INCLUDE_NS8390) || (defined(INCLUDE_3C503) && !defined(T503_SHMEM)) || (defined(INCLUDE_WD) && defined(WD_790_PIO))
/**************************************************************************
ETH_PIO_READ - Read a frame via Programmed I/O
**************************************************************************/
static void eth_pio_read(unsigned int src, unsigned char *dst, unsigned int cnt)
{
#ifdef	INCLUDE_WD
	outb(src & 0xff, eth_asic_base + WD_GP2);
	outb(src >> 8, eth_asic_base + WD_GP2);
#else
	outb(D8390_COMMAND_RD2 |
		D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND);
	outb(cnt, eth_nic_base + D8390_P0_RBCR0);
	outb(cnt>>8, eth_nic_base + D8390_P0_RBCR1);
	outb(src, eth_nic_base + D8390_P0_RSAR0);
	outb(src>>8, eth_nic_base + D8390_P0_RSAR1);
	outb(D8390_COMMAND_RD0 |
		D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND);

#ifdef	INCLUDE_3C503
	outb(src & 0xff, eth_asic_base + _3COM_DALSB);
	outb(src >> 8, eth_asic_base + _3COM_DAMSB);
	outb(t503_output | _3COM_CR_START, eth_asic_base + _3COM_CR);
#endif
#endif

	if (eth_flags & FLAG_16BIT)
		cnt = (cnt + 1) >> 1;

	while(cnt--) {
#ifdef	INCLUDE_3C503
		while((inb(eth_asic_base + _3COM_STREG) & _3COM_STREG_DPRDY) == 0)
			;
#endif

		if (eth_flags & FLAG_16BIT) {
			*((unsigned short *)dst) = inw(eth_asic_base + ASIC_PIO);
			dst += 2;
		}
		else
			*(dst++) = inb(eth_asic_base + ASIC_PIO);
	}

#ifdef	INCLUDE_3C503
	outb(t503_output, eth_asic_base + _3COM_CR);
#endif
}

/**************************************************************************
ETH_PIO_WRITE - Write a frame via Programmed I/O
**************************************************************************/
static void eth_pio_write(const unsigned char *src, unsigned int dst, unsigned int cnt)
{
#ifdef	COMPEX_RL2000_FIX
	unsigned int x;
#endif	/* COMPEX_RL2000_FIX */
#ifdef	INCLUDE_WD
	outb(dst & 0xff, eth_asic_base + WD_GP2);
	outb(dst >> 8, eth_asic_base + WD_GP2);
#else
	outb(D8390_COMMAND_RD2 |
		D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND);
	outb(D8390_ISR_RDC, eth_nic_base + D8390_P0_ISR);
	outb(cnt, eth_nic_base + D8390_P0_RBCR0);
	outb(cnt>>8, eth_nic_base + D8390_P0_RBCR1);
	outb(dst, eth_nic_base + D8390_P0_RSAR0);
	outb(dst>>8, eth_nic_base + D8390_P0_RSAR1);
	outb(D8390_COMMAND_RD1 |
		D8390_COMMAND_STA, eth_nic_base + D8390_P0_COMMAND);

#ifdef	INCLUDE_3C503
	outb(dst & 0xff, eth_asic_base + _3COM_DALSB);
	outb(dst >> 8, eth_asic_base + _3COM_DAMSB);

	outb(t503_output | _3COM_CR_DDIR | _3COM_CR_START, eth_asic_base + _3COM_CR);
#endif
#endif

	if (eth_flags & FLAG_16BIT)
		cnt = (cnt + 1) >> 1;

	while(cnt--)
	{
#ifdef	INCLUDE_3C503
		while((inb(eth_asic_base + _3COM_STREG) & _3COM_STREG_DPRDY) == 0)
			;
#endif

		if (eth_flags & FLAG_16BIT) {
			outw(*((unsigned short *)src), eth_asic_base + ASIC_PIO);
			src += 2;
		}
		else
			outb(*(src++), eth_asic_base + ASIC_PIO);
	}

#ifdef	INCLUDE_3C503
	outb(t503_output, eth_asic_base + _3COM_CR);
#else
#ifdef	COMPEX_RL2000_FIX
	for (x = 0;
		x < COMPEX_RL2000_TRIES &&
		(inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_RDC)
		!= D8390_ISR_RDC;
		++x);
	if (x >= COMPEX_RL2000_TRIES)
		printf("Warning: Compex RL2000 aborted wait!\n");
#endif	/* COMPEX_RL2000_FIX */
#ifndef	INCLUDE_WD
	while((inb(eth_nic_base + D8390_P0_ISR) & D8390_ISR_RDC)
		!= D8390_ISR_RDC);
#endif
#endif
}
#else
/**************************************************************************
ETH_PIO_READ - Dummy routine when NE2000 not compiled in
**************************************************************************/
static void eth_pio_read(unsigned int src __unused, unsigned char *dst  __unused, unsigned int cnt __unused) {}
#endif


/**************************************************************************
enable_multycast - Enable Multicast
**************************************************************************/
static void enable_multicast(unsigned short eth_nic_base) 
{
	unsigned char mcfilter[8];
	int i;
	memset(mcfilter, 0xFF, 8);
	outb(4, eth_nic_base+D8390_P0_RCR);	
	outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS1, eth_nic_base + D8390_P0_COMMAND);
	for(i=0;i<8;i++)
	{
		outb(mcfilter[i], eth_nic_base + 8 + i);
		if(inb(eth_nic_base + 8 + i)!=mcfilter[i])
			printf("Error SMC 83C690 Multicast filter read/write mishap %d\n",i);
	}
	outb(D8390_COMMAND_RD2 + D8390_COMMAND_PS0, eth_nic_base + D8390_P0_COMMAND);
	outb(4 | 0x08, eth_nic_base+D8390_P0_RCR);
}

/**************************************************************************
NS8390_RESET - Reset adapter
**************************************************************************/
static void ns8390_reset(struct nic *nic)
{
	int i;

	eth_drain_receiver = 0;
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_RD2 |
			D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);
	if (eth_flags & FLAG_16BIT)
		outb(0x49, eth_nic_base+D8390_P0_DCR);
	else
		outb(0x48, eth_nic_base+D8390_P0_DCR);
	outb(0, eth_nic_base+D8390_P0_RBCR0);
	outb(0, eth_nic_base+D8390_P0_RBCR1);
	outb(0x20, eth_nic_base+D8390_P0_RCR);	/* monitor mode */
	outb(2, eth_nic_base+D8390_P0_TCR);
	outb(eth_tx_start, eth_nic_base+D8390_P0_TPSR);
	outb(eth_rx_start, eth_nic_base+D8390_P0_PSTART);
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790) {
#ifdef	WD_790_PIO
		outb(0x10, eth_asic_base + 0x06); /* disable interrupts, enable PIO */
		outb(0x01, eth_nic_base + 0x09); /* enable ring read auto-wrap */
#else
		outb(0, eth_nic_base + 0x09);
#endif
	}
#endif
	outb(eth_memsize, eth_nic_base+D8390_P0_PSTOP);
	outb(eth_memsize - 1, eth_nic_base+D8390_P0_BOUND);
	outb(0xFF, eth_nic_base+D8390_P0_ISR);
	outb(0, eth_nic_base+D8390_P0_IMR);
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS1 |
			D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS1 |
			D8390_COMMAND_RD2 | D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);
	for (i=0; i<ETH_ALEN; i++)
		outb(nic->node_addr[i], eth_nic_base+D8390_P1_PAR0+i);
	for (i=0; i<ETH_ALEN; i++)
		outb(0xFF, eth_nic_base+D8390_P1_MAR0+i);
	outb(eth_rx_start, eth_nic_base+D8390_P1_CURR);
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	outb(0xFF, eth_nic_base+D8390_P0_ISR);
	outb(0, eth_nic_base+D8390_P0_TCR);	/* transmitter on */
	outb(4, eth_nic_base+D8390_P0_RCR);	/* allow rx broadcast frames */

	enable_multicast(eth_nic_base);

#ifdef	INCLUDE_3C503
        /*
         * No way to tell whether or not we're supposed to use
         * the 3Com's transceiver unless the user tells us.
         * 'flags' should have some compile time default value
         * which can be changed from the command menu.
         */
	t503_output = (nic->flags) ? 0 : _3COM_CR_XSEL;
	outb(t503_output, eth_asic_base + _3COM_CR);
#endif
}

static int ns8390_poll(struct nic *nic, int retrieve);

#ifndef	INCLUDE_3C503
/**************************************************************************
ETH_RX_OVERRUN - Bring adapter back to work after an RX overrun
**************************************************************************/
static void eth_rx_overrun(struct nic *nic)
{
	int start_time;

#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_RD2 |
			D8390_COMMAND_STP, eth_nic_base+D8390_P0_COMMAND);

	/* wait for at least 1.6ms - we wait one timer tick */
	start_time = currticks();
	while (currticks() - start_time <= 1)
		/* Nothing */;

	outb(0, eth_nic_base+D8390_P0_RBCR0);	/* reset byte counter */
	outb(0, eth_nic_base+D8390_P0_RBCR1);

	/*
	 * Linux driver checks for interrupted TX here. This is not necessary,
	 * because the transmit routine waits until the frame is sent.
	 */

	/* enter loopback mode and restart NIC */
	outb(2, eth_nic_base+D8390_P0_TCR);
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 | D8390_COMMAND_RD2 |
			D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);

	/* clear the RX ring, acknowledge overrun interrupt */
	eth_drain_receiver = 1;
	while (ns8390_poll(nic, 1))
		/* Nothing */;
	eth_drain_receiver = 0;
	outb(D8390_ISR_OVW, eth_nic_base+D8390_P0_ISR);

	/* leave loopback mode - no packets to be resent (see Linux driver) */
	outb(0, eth_nic_base+D8390_P0_TCR);
}
#endif	/* INCLUDE_3C503 */

/**************************************************************************
NS8390_TRANSMIT - Transmit a frame
**************************************************************************/
static void ns8390_transmit(
	struct nic *nic,
	const char *d,			/* Destination */
	unsigned int t,			/* Type */
	unsigned int s,			/* size */
	const char *p)			/* Packet */
{
#if defined(INCLUDE_3C503) || (defined(INCLUDE_WD) && ! defined(WD_790_PIO))
	Address		eth_vmem = bus_to_virt(eth_bmem);
#endif
#ifdef	INCLUDE_3C503
        if (!(eth_flags & FLAG_PIO)) {
                memcpy((char *)eth_vmem, d, ETH_ALEN);	/* dst */
                memcpy((char *)eth_vmem+ETH_ALEN, nic->node_addr, ETH_ALEN); /* src */
                *((char *)eth_vmem+12) = t>>8;		/* type */
                *((char *)eth_vmem+13) = t;
                memcpy((char *)eth_vmem+ETH_HLEN, p, s);
                s += ETH_HLEN;
                while (s < ETH_ZLEN) *((char *)eth_vmem+(s++)) = 0;
        }
#endif

#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_16BIT) {
		outb(eth_laar | WD_LAAR_M16EN, eth_asic_base + WD_LAAR);
		inb(0x84);
	}
#ifndef	WD_790_PIO
	/* Memory interface */
	if (eth_flags & FLAG_790) {
		outb(WD_MSR_MENB, eth_asic_base + WD_MSR);
		inb(0x84);
	}
	inb(0x84);
	memcpy((char *)eth_vmem, d, ETH_ALEN);	/* dst */
	memcpy((char *)eth_vmem+ETH_ALEN, nic->node_addr, ETH_ALEN); /* src */
	*((char *)eth_vmem+12) = t>>8;		/* type */
	*((char *)eth_vmem+13) = t;
	memcpy((char *)eth_vmem+ETH_HLEN, p, s);
	s += ETH_HLEN;
	while (s < ETH_ZLEN) *((char *)eth_vmem+(s++)) = 0;
	if (eth_flags & FLAG_790) {
		outb(0, eth_asic_base + WD_MSR);
		inb(0x84);
	}
#else
	inb(0x84);
#endif
#endif

#if	defined(INCLUDE_3C503)
	if (eth_flags & FLAG_PIO)
#endif
#if	defined(INCLUDE_NE) || defined(INCLUDE_NS8390) || (defined(INCLUDE_3C503) && !defined(T503_SHMEM)) || (defined(INCLUDE_WD) && defined(WD_790_PIO))
	{
		/* Programmed I/O */
		unsigned short type;
		type = (t >> 8) | (t << 8);
		eth_pio_write( (unsigned char *) d, eth_tx_start<<8, ETH_ALEN);
		eth_pio_write(nic->node_addr, (eth_tx_start<<8)+ETH_ALEN, ETH_ALEN);
		/* bcc generates worse code without (const+const) below */
		eth_pio_write((unsigned char *)&type, (eth_tx_start<<8)+(ETH_ALEN+ETH_ALEN), 2);
		eth_pio_write( (unsigned char *) p, (eth_tx_start<<8)+ETH_HLEN, s);
		s += ETH_HLEN;
		if (s < ETH_ZLEN) s = ETH_ZLEN;
	}
#endif
#if	defined(INCLUDE_3C503)
#endif

#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_16BIT) {
		outb(eth_laar & ~WD_LAAR_M16EN, eth_asic_base + WD_LAAR);
		inb(0x84);
	}
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_RD2 | D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	outb(eth_tx_start, eth_nic_base+D8390_P0_TPSR);
	outb(s, eth_nic_base+D8390_P0_TBCR0);
	outb(s>>8, eth_nic_base+D8390_P0_TBCR1);
#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_790)
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_TXP | D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
	else
#endif
		outb(D8390_COMMAND_PS0 |
			D8390_COMMAND_TXP | D8390_COMMAND_RD2 |
			D8390_COMMAND_STA, eth_nic_base+D8390_P0_COMMAND);
}

/**************************************************************************
NS8390_POLL - Wait for a frame
**************************************************************************/
static int ns8390_poll(struct nic *nic, int retrieve)
{
	int ret = 0;
	unsigned char rstat, curr, next;
	unsigned short len, frag;
	unsigned short pktoff;
	unsigned char *p;
	struct ringbuffer pkthdr;

#ifndef	INCLUDE_3C503
	/* avoid infinite recursion: see eth_rx_overrun() */
	if (!eth_drain_receiver && (inb(eth_nic_base+D8390_P0_ISR) & D8390_ISR_OVW)) {
		eth_rx_overrun(nic);
		return(0);
	}
#endif	/* INCLUDE_3C503 */
	rstat = inb(eth_nic_base+D8390_P0_RSR);
	if (!(rstat & D8390_RSTAT_PRX)) return(0);
	next = inb(eth_nic_base+D8390_P0_BOUND)+1;
	if (next >= eth_memsize) next = eth_rx_start;
	outb(D8390_COMMAND_PS1, eth_nic_base+D8390_P0_COMMAND);
	curr = inb(eth_nic_base+D8390_P1_CURR);
	outb(D8390_COMMAND_PS0, eth_nic_base+D8390_P0_COMMAND);
	if (curr >= eth_memsize) curr=eth_rx_start;
	if (curr == next) return(0);

	if ( ! retrieve ) return 1;

#ifdef	INCLUDE_WD
	if (eth_flags & FLAG_16BIT) {
		outb(eth_laar | WD_LAAR_M16EN, eth_asic_base + WD_LAAR);
		inb(0x84);
	}
#ifndef	WD_790_PIO
	if (eth_flags & FLAG_790) {
		outb(WD_MSR_MENB, eth_asic_base + WD_MSR);
		inb(0x84);
	}
#endif
	inb(0x84);
#endif
	pktoff = next << 8;
	if (eth_flags & FLAG_PIO)
		eth_pio_read(pktoff, (unsigned char *)&pkthdr, 4);
	else
		memcpy(&pkthdr, bus_to_virt(eth_rmem + pktoff), 4);
	pktoff += sizeof(pkthdr);
	/* incoming length includes FCS so must sub 4 */
	len = pkthdr.len - 4;
	if ((pkthdr.status & D8390_RSTAT_PRX) == 0 || len < ETH_ZLEN
		|| len > ETH_FRAME_LEN) {
		printf("Bogus packet, ignoring\n");
		return (0);
	}
	else {
		p = nic->packet;
		nic->packetlen = len;		/* available to caller */
		frag = (eth_memsize << 8) - pktoff;
		if (len > frag) {		/* We have a wrap-around */
			/* read first part */
			if (eth_flags & FLAG_PIO)
				eth_pio_read(pktoff, p, frag);
			else
				memcpy(p, bus_to_virt(eth_rmem + pktoff), frag);
			pktoff = eth_rx_start << 8;
			p += frag;
			len -= frag;
		}
		/* read second part */
		if (eth_flags & FLAG_PIO)
			eth_pio_read(pktoff, p, len);
		else
			memcpy(p, bus_to_virt(eth_rmem + pktoff), len);
		ret = 1;
	}
#ifdef	INCLUDE_WD
#ifndef	WD_790_PIO
	if (eth_flags & FLAG_790) {
		outb(0, eth_asic_base + WD_MSR);
		inb(0x84);
	}
#endif
	if (eth_flags & FLAG_16BIT) {
		outb(eth_laar & ~WD_LAAR_M16EN, eth_asic_base + WD_LAAR);
		inb(0x84);
	}
	inb(0x84);
#endif
	next = pkthdr.next;		/* frame number of next packet */
	if (next == eth_rx_start)
		next = eth_memsize;
	outb(next-1, eth_nic_base+D8390_P0_BOUND);
	return(ret);
}

/**************************************************************************
NS8390_DISABLE - Turn off adapter
**************************************************************************/
static void ns8390_disable ( struct nic *nic ) {
	ns8390_reset(nic);
}

/**************************************************************************
NS8390_IRQ - Enable, Disable, or Force interrupts
**************************************************************************/
static void ns8390_irq(struct nic *nic __unused, irq_action_t action __unused)
{
  switch ( action ) {
  case DISABLE :
    break;
  case ENABLE :
    break;
  case FORCE :
    break;
  }
}

static struct nic_operations ns8390_operations;
static struct nic_operations ns8390_operations = {
	.connect	= dummy_connect,
	.poll		= ns8390_poll,
	.transmit	= ns8390_transmit,
	.irq		= ns8390_irq,
};

/**************************************************************************
ETH_PROBE - Look for an adapter
**************************************************************************/
#ifdef	INCLUDE_NS8390
static int eth_probe (struct nic *nic, struct pci_device *pci)
#else
static int eth_probe (struct dev *dev, unsigned short *probe_addrs __unused)
#endif
{
	int i;
#ifdef INCLUDE_NS8390
	unsigned short pci_probe_addrs[] = { pci->ioaddr, 0 };
	unsigned short *probe_addrs = pci_probe_addrs;
#endif
	eth_vendor = VENDOR_NONE;
	eth_drain_receiver = 0;

	nic->irqno  = 0;

#ifdef	INCLUDE_WD
{
	/******************************************************************
	Search for WD/SMC cards
	******************************************************************/
	struct wd_board *brd;
	unsigned short chksum;
	unsigned char c;
	for (eth_asic_base = WD_LOW_BASE; eth_asic_base <= WD_HIGH_BASE;
		eth_asic_base += 0x20) {
		chksum = 0;
		for (i=8; i<16; i++)
			chksum += inb(eth_asic_base+i);
		/* Extra checks to avoid soundcard */
		if ((chksum & 0xFF) == 0xFF &&
			inb(eth_asic_base+8) != 0xFF &&
			inb(eth_asic_base+9) != 0xFF)
			break;
	}
	if (eth_asic_base > WD_HIGH_BASE)
		return (0);
	/* We've found a board */
	eth_vendor = VENDOR_WD;
	eth_nic_base = eth_asic_base + WD_NIC_ADDR;

	nic->ioaddr = eth_nic_base;

	c = inb(eth_asic_base+WD_BID);	/* Get board id */
	for (brd = wd_boards; brd->name; brd++)
		if (brd->id == c) break;
	if (!brd->name) {
		printf("Unknown WD/SMC NIC type %hhX\n", c);
		return (0);	/* Unknown type */
	}
	eth_flags = brd->flags;
	eth_memsize = brd->memsize;
	eth_tx_start = 0;
	eth_rx_start = D8390_TXBUF_SIZE;
	if ((c == TYPE_WD8013EP) &&
		(inb(eth_asic_base + WD_ICR) & WD_ICR_16BIT)) {
			eth_flags = FLAG_16BIT;
			eth_memsize = MEM_16384;
	}
	if ((c & WD_SOFTCONFIG) && (!(eth_flags & FLAG_790))) {
		eth_bmem = (0x80000 |
		 ((inb(eth_asic_base + WD_MSR) & 0x3F) << 13));
	} else
		eth_bmem = WD_DEFAULT_MEM;
	if (brd->id == TYPE_SMC8216T || brd->id == TYPE_SMC8216C) {
		/* from Linux driver, 8416BT detects as 8216 sometimes */
		unsigned int addr = inb(eth_asic_base + 0xb);
		if (((addr >> 4) & 3) == 0) {
			brd += 2;
			eth_memsize = brd->memsize;
		}
	}
	outb(0x80, eth_asic_base + WD_MSR);	/* Reset */
	for (i=0; i<ETH_ALEN; i++) {
		nic->node_addr[i] = inb(i+eth_asic_base+WD_LAR);
	}
	DBG ( "\n%s base %4.4x", brd->name, eth_asic_base );
	if (eth_flags & FLAG_790) {
#ifdef	WD_790_PIO
		DBG ( ", PIO mode, addr %s\n", eth_ntoa ( nic->node_addr ) );
		eth_bmem = 0;
		eth_flags |= FLAG_PIO;		/* force PIO mode */
		outb(0, eth_asic_base+WD_MSR);
#else
		DBG ( ", Memory %x, MAC Addr %s\n", eth_bmem, eth_ntoa ( nic->node_addr) );

		outb(WD_MSR_MENB, eth_asic_base+WD_MSR);
		outb((inb(eth_asic_base+0x04) |
			0x80), eth_asic_base+0x04);
		outb(((unsigned)(eth_bmem >> 13) & 0x0F) |
			((unsigned)(eth_bmem >> 11) & 0x40) |
			(inb(eth_asic_base+0x0B) & 0xB0), eth_asic_base+0x0B);
		outb((inb(eth_asic_base+0x04) &
			~0x80), eth_asic_base+0x04);
#endif
	} else {

		DBG (", Memory %x, MAC Addr %s\n", eth_bmem, eth_ntoa ( nic->node_addr) );

		outb(((unsigned)(eth_bmem >> 13) & 0x3F) | 0x40, eth_asic_base+WD_MSR);
	}
	if (eth_flags & FLAG_16BIT) {
		if (eth_flags & FLAG_790) {
			eth_laar = inb(eth_asic_base + WD_LAAR);
			outb(WD_LAAR_M16EN, eth_asic_base + WD_LAAR);
		} else {
			outb((eth_laar =
				WD_LAAR_L16EN | 1), eth_asic_base + WD_LAAR);
/*
	The previous line used to be
				WD_LAAR_M16EN | WD_LAAR_L16EN | 1));
	jluke@deakin.edu.au reported that removing WD_LAAR_M16EN made
	it work for WD8013s.  This seems to work for my 8013 boards. I
	don't know what is really happening.  I wish I had data sheets
	or more time to decode the Linux driver. - Ken
*/
		}
		inb(0x84);
	}
}
#endif
#ifdef	INCLUDE_3C503
#ifdef	T503_AUI
	nic->flags = 1;		/* aui */
#else
	nic->flags = 0;		/* no aui */
#endif
        /******************************************************************
        Search for 3Com 3c503 if no WD/SMC cards
        ******************************************************************/
	if (eth_vendor == VENDOR_NONE) {
		int	idx;
		int	iobase_reg, membase_reg;
		static unsigned short	base[] = {
			0x300, 0x310, 0x330, 0x350,
			0x250, 0x280, 0x2A0, 0x2E0, 0 };

		/* Loop through possible addresses checking each one */

		for (idx = 0; (eth_nic_base = base[idx]) != 0; ++idx) {

			eth_asic_base = eth_nic_base + _3COM_ASIC_OFFSET;
/*
 * Note that we use the same settings for both 8 and 16 bit cards:
 * both have an 8K bank of memory at page 1 while only the 16 bit
 * cards have a bank at page 0.
 */
			eth_memsize = MEM_16384;
			eth_tx_start = 32;
			eth_rx_start = 32 + D8390_TXBUF_SIZE;

		/* Check our base address. iobase and membase should */
		/* both have a maximum of 1 bit set or be 0. */

			iobase_reg = inb(eth_asic_base + _3COM_BCFR);
			membase_reg = inb(eth_asic_base + _3COM_PCFR);

			if ((iobase_reg & (iobase_reg - 1)) ||
				(membase_reg & (membase_reg - 1)))
				continue;		/* nope */

		/* Now get the shared memory address */

			eth_flags = 0;

			switch (membase_reg) {
				case _3COM_PCFR_DC000:
					eth_bmem = 0xdc000;
					break;
				case _3COM_PCFR_D8000:
					eth_bmem = 0xd8000;
					break;
				case _3COM_PCFR_CC000:
					eth_bmem = 0xcc000;
					break;
				case _3COM_PCFR_C8000:
					eth_bmem = 0xc8000;
					break;
				case _3COM_PCFR_PIO:
					eth_flags |= FLAG_PIO;
					eth_bmem = 0;
					break;
				default:
					continue;	/* nope */
				}
			break;
		}

		if (base[idx] == 0)		/* not found */
			return (0);
#ifndef	T503_SHMEM
		eth_flags |= FLAG_PIO;		/* force PIO mode */
		eth_bmem = 0;
#endif
		eth_vendor = VENDOR_3COM;


        /* Need this to make ns8390_poll() happy. */

                eth_rmem = eth_bmem - 0x2000;

        /* Reset NIC and ASIC */

                outb(_3COM_CR_RST | _3COM_CR_XSEL, eth_asic_base + _3COM_CR );
                outb(_3COM_CR_XSEL, eth_asic_base + _3COM_CR );

        /* Get our ethernet address */

                outb(_3COM_CR_EALO | _3COM_CR_XSEL, eth_asic_base + _3COM_CR);
		nic->ioaddr = eth_nic_base;
                DBG ( "\n3Com 3c503 base %4.4x, ", eth_nic_base );
                if (eth_flags & FLAG_PIO)
			DBG ( "PIO mode" );
                else
			DBG ( "memory %4.4x", eth_bmem );
                for (i=0; i<ETH_ALEN; i++) {
                        nic->node_addr[i] = inb(eth_nic_base+i);
                }
                DBG ( ", %s, MAC Addr %s\n", nic->flags ? "AUI" : "internal xcvr",
		      eth_ntoa ( nic->node_addr ) );

                outb(_3COM_CR_XSEL, eth_asic_base + _3COM_CR);
        /*
         * Initialize GA configuration register. Set bank and enable shared
         * mem. We always use bank 1. Disable interrupts.
         */
                outb(_3COM_GACFR_RSEL |
			_3COM_GACFR_MBS0 | _3COM_GACFR_TCM | _3COM_GACFR_NIM, eth_asic_base + _3COM_GACFR);

                outb(0xff, eth_asic_base + _3COM_VPTR2);
                outb(0xff, eth_asic_base + _3COM_VPTR1);
                outb(0x00, eth_asic_base + _3COM_VPTR0);
        /*
         * Clear memory and verify that it worked (we use only 8K)
         */

		if (!(eth_flags & FLAG_PIO)) {
			memset(bus_to_virt(eth_bmem), 0, 0x2000);
			for(i = 0; i < 0x2000; ++i)
				if (*((char *)(bus_to_virt(eth_bmem+i)))) {
					printf ("Failed to clear 3c503 shared mem.\n");
					return (0);
				}
		}
        /*
         * Initialize GA page/start/stop registers.
         */
                outb(eth_tx_start, eth_asic_base + _3COM_PSTR);
                outb(eth_memsize, eth_asic_base + _3COM_PSPR);
        }
#endif
#if	defined(INCLUDE_NE) || defined(INCLUDE_NS8390)
{
	/******************************************************************
	Search for NE1000/2000 if no WD/SMC or 3com cards
	******************************************************************/
	unsigned char c;
	if (eth_vendor == VENDOR_NONE) {
		unsigned char romdata[16];
		unsigned char testbuf[32];
		int idx;
		static unsigned char test[] = "NE*000 memory";
		static unsigned short base[] = {
#ifdef	NE_SCAN
			NE_SCAN,
#endif
			0 };
		/* if no addresses supplied, fall back on defaults */
		if (probe_addrs == NULL || probe_addrs[0] == 0)
			probe_addrs = base;
		eth_bmem = 0;		/* No shared memory */
		for (idx = 0; (eth_nic_base = probe_addrs[idx]) != 0; ++idx) {
			eth_flags = FLAG_PIO;
			eth_asic_base = eth_nic_base + NE_ASIC_OFFSET;
			eth_memsize = MEM_16384;
			eth_tx_start = 32;
			eth_rx_start = 32 + D8390_TXBUF_SIZE;
			c = inb(eth_asic_base + NE_RESET);
			outb(c, eth_asic_base + NE_RESET);
			(void) inb(0x84);
			outb(D8390_COMMAND_STP |
				D8390_COMMAND_RD2, eth_nic_base + D8390_P0_COMMAND);
			outb(D8390_RCR_MON, eth_nic_base + D8390_P0_RCR);
			outb(D8390_DCR_FT1 | D8390_DCR_LS, eth_nic_base + D8390_P0_DCR);
			outb(MEM_8192, eth_nic_base + D8390_P0_PSTART);
			outb(MEM_16384, eth_nic_base + D8390_P0_PSTOP);
#ifdef	NS8390_FORCE_16BIT
			eth_flags |= FLAG_16BIT;	/* force 16-bit mode */
#endif

			eth_pio_write( (unsigned char *) test, 8192, sizeof(test));
			eth_pio_read(8192, testbuf, sizeof(test));
			if (!memcmp(test, testbuf, sizeof(test)))
				break;
			eth_flags |= FLAG_16BIT;
			eth_memsize = MEM_32768;
			eth_tx_start = 64;
			eth_rx_start = 64 + D8390_TXBUF_SIZE;
			outb(D8390_DCR_WTS |
				D8390_DCR_FT1 | D8390_DCR_LS, eth_nic_base + D8390_P0_DCR);
			outb(MEM_16384, eth_nic_base + D8390_P0_PSTART);
			outb(MEM_32768, eth_nic_base + D8390_P0_PSTOP);
			eth_pio_write( (unsigned char *) test, 16384, sizeof(test));
			eth_pio_read(16384, testbuf, sizeof(test));
			if (!memcmp(testbuf, test, sizeof(test)))
				break;
		}
		if (eth_nic_base == 0)
			return (0);
		if (eth_nic_base > ISA_MAX_ADDR)	/* PCI probably */
			eth_flags |= FLAG_16BIT;
		eth_vendor = VENDOR_NOVELL;
		eth_pio_read(0, romdata, sizeof(romdata));
		for (i=0; i<ETH_ALEN; i++) {
			nic->node_addr[i] = romdata[i + ((eth_flags & FLAG_16BIT) ? i : 0)];
		}
		nic->ioaddr = eth_nic_base;
		DBG ( "\nNE%c000 base %4.4x, MAC Addr %s\n",
		      (eth_flags & FLAG_16BIT) ? '2' : '1', eth_nic_base,
		      eth_ntoa ( nic->node_addr ) );
	}
}
#endif
	if (eth_vendor == VENDOR_NONE)
		return(0);
        if (eth_vendor != VENDOR_3COM)
		eth_rmem = eth_bmem;
	ns8390_reset(nic);
	nic->nic_op	= &ns8390_operations;

        /* Based on PnP ISA map */
#ifdef	INCLUDE_WD
        dev->devid.vendor_id = htons(GENERIC_ISAPNP_VENDOR);
        dev->devid.device_id = htons(0x812a);
#endif
#ifdef	INCLUDE_3C503
        dev->devid.vendor_id = htons(GENERIC_ISAPNP_VENDOR);
        dev->devid.device_id = htons(0x80f3);
#endif
#ifdef	INCLUDE_NE
        dev->devid.vendor_id = htons(GENERIC_ISAPNP_VENDOR);
        dev->devid.device_id = htons(0x80d6);
#endif
	return 1;
}

#ifdef	INCLUDE_WD
struct isa_driver wd_driver __isa_driver = {
	.type    = NIC_DRIVER,
	.name    = "WD",
	.probe   = wd_probe,
	.ioaddrs = 0, 
};
ISA_ROM("wd","WD8003/8013, SMC8216/8416, SMC 83c790 (EtherEZ)");
#endif

#ifdef	INCLUDE_3C503
struct isa_driver t503_driver __isa_driver = {
	.type    = NIC_DRIVER,
	.name    = "3C503",
	.probe   = t503_probe,
	.ioaddrs = 0, 
};
ISA_ROM("3c503","3Com503, Etherlink II[/16]");
#endif

#ifdef	INCLUDE_NE
struct isa_driver ne_driver __isa_driver = {
	.type    = NIC_DRIVER,
	.name    = "NE*000",
	.probe   = ne_probe,
	.ioaddrs = 0, 
};
ISA_ROM("ne","NE1000/2000 and clones");
#endif

#ifdef	INCLUDE_NS8390
static struct pci_device_id nepci_nics[] = {
/* A few NE2000 PCI clones, list not exhaustive */
PCI_ROM(0x10ec, 0x8029, "rtl8029",      "Realtek 8029", 0),
PCI_ROM(0x1186, 0x0300, "dlink-528",    "D-Link DE-528", 0),
PCI_ROM(0x1050, 0x0940, "winbond940",   "Winbond NE2000-PCI", 0),		/* Winbond 86C940 / 89C940 */
PCI_ROM(0x1050, 0x5a5a, "winbond940f",  "Winbond W89c940F", 0),		/* Winbond 89C940F */
PCI_ROM(0x11f6, 0x1401, "compexrl2000", "Compex ReadyLink 2000", 0),
PCI_ROM(0x8e2e, 0x3000, "ktiet32p2",    "KTI ET32P2", 0),
PCI_ROM(0x4a14, 0x5000, "nv5000sc",     "NetVin NV5000SC", 0),
PCI_ROM(0x12c3, 0x0058, "holtek80232",  "Holtek HT80232", 0),
PCI_ROM(0x12c3, 0x5598, "holtek80229",  "Holtek HT80229", 0),
PCI_ROM(0x10bd, 0x0e34, "surecom-ne34", "Surecom NE34", 0),
PCI_ROM(0x1106, 0x0926, "via86c926",    "Via 86c926", 0),
};

PCI_DRIVER ( nepci_driver, nepci_nics, PCI_NO_CLASS );

DRIVER ( "NE2000/PCI", nic_driver, pci_driver, nepci_driver,
	 nepci_probe, ns8390_disable );

#endif /* INCLUDE_NS8390 */

#endif

/*
 * Local variables:
 *  c-basic-offset: 8
 *  c-indent-level: 8
 *  tab-width: 8
 * End:
 */