aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/eepro.c
blob: 93387f16c2eaf64ae114e2438fd1562a0a547258 (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
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
/* eepro.c: Intel EtherExpress Pro/10 device driver for Linux. */
/*
	Written 1994, 1995,1996 by Bao C. Ha.

	Copyright (C) 1994, 1995,1996 by Bao C. Ha.

	This software may be used and distributed
	according to the terms of the GNU General Public License,
	incorporated herein by reference.

	The author may be reached at bao.ha@srs.gov
	or 418 Hastings Place, Martinez, GA 30907.

	Things remaining to do:
	Better record keeping of errors.
	Eliminate transmit interrupt to reduce overhead.
	Implement "concurrent processing". I won't be doing it!

	Bugs:

	If you have a problem of not detecting the 82595 during a
	reboot (warm reset), disable the FLASH memory should fix it.
	This is a compatibility hardware problem.

	Versions:
	0.13b	basic ethtool support (aris, 09/13/2004)
	0.13a   in memory shortage, drop packets also in board
		(Michael Westermann <mw@microdata-pos.de>, 07/30/2002)
	0.13    irq sharing, rewrote probe function, fixed a nasty bug in
		hardware_send_packet and a major cleanup (aris, 11/08/2001)
	0.12d	fixing a problem with single card detected as eight eth devices
		fixing a problem with sudden drop in card performance
		(chris (asdn@go2.pl), 10/29/2001)
	0.12c	fixing some problems with old cards (aris, 01/08/2001)
	0.12b	misc fixes (aris, 06/26/2000)
	0.12a   port of version 0.12a of 2.2.x kernels to 2.3.x
		(aris (aris@conectiva.com.br), 05/19/2000)
	0.11e   some tweaks about multiple cards support (PdP, jul/aug 1999)
	0.11d	added __initdata, __init stuff; call spin_lock_init
	        in eepro_probe1. Replaced "eepro" by dev->name. Augmented
		the code protected by spin_lock in interrupt routine
		(PdP, 12/12/1998)
	0.11c   minor cleanup (PdP, RMC, 09/12/1998)
	0.11b   Pascal Dupuis (dupuis@lei.ucl.ac.be): works as a module
	        under 2.1.xx. Debug messages are flagged as KERN_DEBUG to
		avoid console flooding. Added locking at critical parts. Now
		the dawn thing is SMP safe.
	0.11a   Attempt to get 2.1.xx support up (RMC)
	0.11	Brian Candler added support for multiple cards. Tested as
		a module, no idea if it works when compiled into kernel.

	0.10e	Rick Bressler notified me that ifconfig up;ifconfig down fails
		because the irq is lost somewhere. Fixed that by moving
		request_irq and free_irq to eepro_open and eepro_close respectively.
	0.10d	Ugh! Now Wakeup works. Was seriously broken in my first attempt.
		I'll need to find a way to specify an ioport other than
		the default one in the PnP case. PnP definitively sucks.
		And, yes, this is not the only reason.
	0.10c	PnP Wakeup Test for 595FX. uncomment #define PnPWakeup;
		to use.
	0.10b	Should work now with (some) Pro/10+. At least for
		me (and my two cards) it does. _No_ guarantee for
		function with non-Pro/10+ cards! (don't have any)
		(RMC, 9/11/96)

	0.10	Added support for the Etherexpress Pro/10+.  The
		IRQ map was changed significantly from the old
		pro/10.  The new interrupt map was provided by
		Rainer M. Canavan (Canavan@Zeus.cs.bonn.edu).
		(BCH, 9/3/96)

	0.09	Fixed a race condition in the transmit algorithm,
		which causes crashes under heavy load with fast
		pentium computers.  The performance should also
		improve a bit.  The size of RX buffer, and hence
		TX buffer, can also be changed via lilo or insmod.
		(BCH, 7/31/96)

	0.08	Implement 32-bit I/O for the 82595TX and 82595FX
		based lan cards.  Disable full-duplex mode if TPE
		is not used.  (BCH, 4/8/96)

	0.07a	Fix a stat report which counts every packet as a
		heart-beat failure. (BCH, 6/3/95)

	0.07	Modified to support all other 82595-based lan cards.
		The IRQ vector of the EtherExpress Pro will be set
		according to the value saved in the EEPROM.  For other
		cards, I will do autoirq_request() to grab the next
		available interrupt vector. (BCH, 3/17/95)

	0.06a,b	Interim released.  Minor changes in the comments and
		print out format. (BCH, 3/9/95 and 3/14/95)

	0.06	First stable release that I am comfortable with. (BCH,
		3/2/95)

	0.05	Complete testing of multicast. (BCH, 2/23/95)

	0.04	Adding multicast support. (BCH, 2/14/95)

	0.03	First widely alpha release for public testing.
		(BCH, 2/14/95)

*/

static const char version[] =
	"eepro.c: v0.13b 09/13/2004 aris@cathedrallabs.org\n";

#include <linux/module.h>

/*
  Sources:

	This driver wouldn't have been written without the availability
	of the Crynwr's Lan595 driver source code.  It helps me to
	familiarize with the 82595 chipset while waiting for the Intel
	documentation.  I also learned how to detect the 82595 using
	the packet driver's technique.

	This driver is written by cutting and pasting the skeleton.c driver
	provided by Donald Becker.  I also borrowed the EEPROM routine from
	Donald Becker's 82586 driver.

	Datasheet for the Intel 82595 (including the TX and FX version). It
	provides just enough info that the casual reader might think that it
	documents the i82595.

	The User Manual for the 82595.  It provides a lot of the missing
	information.

*/

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <linux/ethtool.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/dma.h>

#define DRV_NAME "eepro"
#define DRV_VERSION "0.13c"

#define compat_dev_kfree_skb( skb, mode ) dev_kfree_skb( (skb) )
/* I had reports of looong delays with SLOW_DOWN defined as udelay(2) */
#define SLOW_DOWN inb(0x80)
/* udelay(2) */
#define compat_init_data     __initdata
enum iftype { AUI=0, BNC=1, TPE=2 };

/* First, a few definitions that the brave might change. */
/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int eepro_portlist[] compat_init_data =
   { 0x300, 0x210, 0x240, 0x280, 0x2C0, 0x200, 0x320, 0x340, 0x360, 0};
/* note: 0x300 is default, the 595FX supports ALL IO Ports
  from 0x000 to 0x3F0, some of which are reserved in PCs */

/* To try the (not-really PnP Wakeup: */
/*
#define PnPWakeup
*/

/* use 0 for production, 1 for verification, >2 for debug */
#ifndef NET_DEBUG
#define NET_DEBUG 0
#endif
static unsigned int net_debug = NET_DEBUG;

/* The number of low I/O ports used by the ethercard. */
#define EEPRO_IO_EXTENT	16

/* Different 82595 chips */
#define	LAN595		0
#define	LAN595TX	1
#define	LAN595FX	2
#define	LAN595FX_10ISA	3

/* Information that need to be kept for each board. */
struct eepro_local {
	unsigned rx_start;
	unsigned tx_start; /* start of the transmit chain */
	int tx_last;  /* pointer to last packet in the transmit chain */
	unsigned tx_end;   /* end of the transmit chain (plus 1) */
	int eepro;	/* 1 for the EtherExpress Pro/10,
			   2 for the EtherExpress Pro/10+,
			   3 for the EtherExpress 10 (blue cards),
			   0 for other 82595-based lan cards. */
	int version;	/* a flag to indicate if this is a TX or FX
				   version of the 82595 chip. */
	int stepping;

	spinlock_t lock; /* Serializing lock  */

	unsigned rcv_ram;	/* pre-calculated space for rx */
	unsigned xmt_ram;	/* pre-calculated space for tx */
	unsigned char xmt_bar;
	unsigned char xmt_lower_limit_reg;
	unsigned char xmt_upper_limit_reg;
	short xmt_lower_limit;
	short xmt_upper_limit;
	short rcv_lower_limit;
	short rcv_upper_limit;
	unsigned char eeprom_reg;
	unsigned short word[8];
};

/* The station (ethernet) address prefix, used for IDing the board. */
#define SA_ADDR0 0x00	/* Etherexpress Pro/10 */
#define SA_ADDR1 0xaa
#define SA_ADDR2 0x00

#define GetBit(x,y) ((x & (1<<y))>>y)

/* EEPROM Word 0: */
#define ee_PnP       0  /* Plug 'n Play enable bit */
#define ee_Word1     1  /* Word 1? */
#define ee_BusWidth  2  /* 8/16 bit */
#define ee_FlashAddr 3  /* Flash Address */
#define ee_FlashMask 0x7   /* Mask */
#define ee_AutoIO    6  /* */
#define ee_reserved0 7  /* =0! */
#define ee_Flash     8  /* Flash there? */
#define ee_AutoNeg   9  /* Auto Negotiation enabled? */
#define ee_IO0       10 /* IO Address LSB */
#define ee_IO0Mask   0x /*...*/
#define ee_IO1       15 /* IO MSB */

/* EEPROM Word 1: */
#define ee_IntSel    0   /* Interrupt */
#define ee_IntMask   0x7
#define ee_LI        3   /* Link Integrity 0= enabled */
#define ee_PC        4   /* Polarity Correction 0= enabled */
#define ee_TPE_AUI   5   /* PortSelection 1=TPE */
#define ee_Jabber    6   /* Jabber prevention 0= enabled */
#define ee_AutoPort  7   /* Auto Port Selection 1= Disabled */
#define ee_SMOUT     8   /* SMout Pin Control 0= Input */
#define ee_PROM      9   /* Flash EPROM / PROM 0=Flash */
#define ee_reserved1 10  /* .. 12 =0! */
#define ee_AltReady  13  /* Alternate Ready, 0=normal */
#define ee_reserved2 14  /* =0! */
#define ee_Duplex    15

/* Word2,3,4: */
#define ee_IA5       0 /*bit start for individual Addr Byte 5 */
#define ee_IA4       8 /*bit start for individual Addr Byte 5 */
#define ee_IA3       0 /*bit start for individual Addr Byte 5 */
#define ee_IA2       8 /*bit start for individual Addr Byte 5 */
#define ee_IA1       0 /*bit start for individual Addr Byte 5 */
#define ee_IA0       8 /*bit start for individual Addr Byte 5 */

/* Word 5: */
#define ee_BNC_TPE   0 /* 0=TPE */
#define ee_BootType  1 /* 00=None, 01=IPX, 10=ODI, 11=NDIS */
#define ee_BootTypeMask 0x3
#define ee_NumConn   3  /* Number of Connections 0= One or Two */
#define ee_FlashSock 4  /* Presence of Flash Socket 0= Present */
#define ee_PortTPE   5
#define ee_PortBNC   6
#define ee_PortAUI   7
#define ee_PowerMgt  10 /* 0= disabled */
#define ee_CP        13 /* Concurrent Processing */
#define ee_CPMask    0x7

/* Word 6: */
#define ee_Stepping  0 /* Stepping info */
#define ee_StepMask  0x0F
#define ee_BoardID   4 /* Manucaturer Board ID, reserved */
#define ee_BoardMask 0x0FFF

/* Word 7: */
#define ee_INT_TO_IRQ 0 /* int to IRQ Mapping  = 0x1EB8 for Pro/10+ */
#define ee_FX_INT2IRQ 0x1EB8 /* the _only_ mapping allowed for FX chips */

/*..*/
#define ee_SIZE 0x40 /* total EEprom Size */
#define ee_Checksum 0xBABA /* initial and final value for adding checksum */


/* Card identification via EEprom:   */
#define ee_addr_vendor 0x10  /* Word offset for EISA Vendor ID */
#define ee_addr_id 0x11      /* Word offset for Card ID */
#define ee_addr_SN 0x12      /* Serial Number */
#define ee_addr_CRC_8 0x14   /* CRC over last thee Bytes */


#define ee_vendor_intel0 0x25  /* Vendor ID Intel */
#define ee_vendor_intel1 0xD4
#define ee_id_eepro10p0 0x10   /* ID for eepro/10+ */
#define ee_id_eepro10p1 0x31

#define TX_TIMEOUT 40

/* Index to functions, as function prototypes. */

static int	eepro_probe1(struct net_device *dev, int autoprobe);
static int	eepro_open(struct net_device *dev);
static int	eepro_send_packet(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t eepro_interrupt(int irq, void *dev_id);
static void 	eepro_rx(struct net_device *dev);
static void 	eepro_transmit_interrupt(struct net_device *dev);
static int	eepro_close(struct net_device *dev);
static void     set_multicast_list(struct net_device *dev);
static void     eepro_tx_timeout (struct net_device *dev);

static int read_eeprom(int ioaddr, int location, struct net_device *dev);
static int	hardware_send_packet(struct net_device *dev, void *buf, short length);
static int	eepro_grab_irq(struct net_device *dev);

/*
			Details of the i82595.

You will need either the datasheet or the user manual to understand what
is going on here.  The 82595 is very different from the 82586, 82593.

The receive algorithm in eepro_rx() is just an implementation of the
RCV ring structure that the Intel 82595 imposes at the hardware level.
The receive buffer is set at 24K, and the transmit buffer is 8K.  I
am assuming that the total buffer memory is 32K, which is true for the
Intel EtherExpress Pro/10.  If it is less than that on a generic card,
the driver will be broken.

The transmit algorithm in the hardware_send_packet() is similar to the
one in the eepro_rx().  The transmit buffer is a ring linked list.
I just queue the next available packet to the end of the list.  In my
system, the 82595 is so fast that the list seems to always contain a
single packet.  In other systems with faster computers and more congested
network traffics, the ring linked list should improve performance by
allowing up to 8K worth of packets to be queued.

The sizes of the receive and transmit buffers can now be changed via lilo
or insmod.  Lilo uses the appended line "ether=io,irq,debug,rx-buffer,eth0"
where rx-buffer is in KB unit.  Modules uses the parameter mem which is
also in KB unit, for example "insmod io=io-address irq=0 mem=rx-buffer."
The receive buffer has to be more than 3K or less than 29K.  Otherwise,
it is reset to the default of 24K, and, hence, 8K for the trasnmit
buffer (transmit-buffer = 32K - receive-buffer).

*/
#define RAM_SIZE        0x8000

#define RCV_HEADER      8
#define RCV_DEFAULT_RAM 0x6000

#define XMT_HEADER      8
#define XMT_DEFAULT_RAM	(RAM_SIZE - RCV_DEFAULT_RAM)

#define XMT_START_PRO	RCV_DEFAULT_RAM
#define XMT_START_10	0x0000
#define RCV_START_PRO	0x0000
#define RCV_START_10	XMT_DEFAULT_RAM

#define	RCV_DONE	0x0008
#define	RX_OK		0x2000
#define	RX_ERROR	0x0d81

#define	TX_DONE_BIT	0x0080
#define	TX_OK		0x2000
#define	CHAIN_BIT	0x8000
#define	XMT_STATUS	0x02
#define	XMT_CHAIN	0x04
#define	XMT_COUNT	0x06

#define	BANK0_SELECT	0x00
#define	BANK1_SELECT	0x40
#define	BANK2_SELECT	0x80

/* Bank 0 registers */
#define	COMMAND_REG	0x00	/* Register 0 */
#define	MC_SETUP	0x03
#define	XMT_CMD		0x04
#define	DIAGNOSE_CMD	0x07
#define	RCV_ENABLE_CMD	0x08
#define	RCV_DISABLE_CMD	0x0a
#define	STOP_RCV_CMD	0x0b
#define	RESET_CMD	0x0e
#define	POWER_DOWN_CMD	0x18
#define	RESUME_XMT_CMD	0x1c
#define	SEL_RESET_CMD	0x1e
#define	STATUS_REG	0x01	/* Register 1 */
#define	RX_INT		0x02
#define	TX_INT		0x04
#define	EXEC_STATUS	0x30
#define	ID_REG		0x02	/* Register 2	*/
#define	R_ROBIN_BITS	0xc0	/* round robin counter */
#define	ID_REG_MASK	0x2c
#define	ID_REG_SIG	0x24
#define	AUTO_ENABLE	0x10
#define	INT_MASK_REG	0x03	/* Register 3	*/
#define	RX_STOP_MASK	0x01
#define	RX_MASK		0x02
#define	TX_MASK		0x04
#define	EXEC_MASK	0x08
#define	ALL_MASK	0x0f
#define	IO_32_BIT	0x10
#define	RCV_BAR		0x04	/* The following are word (16-bit) registers */
#define	RCV_STOP	0x06

#define	XMT_BAR_PRO	0x0a
#define	XMT_BAR_10	0x0b

#define	HOST_ADDRESS_REG	0x0c
#define	IO_PORT		0x0e
#define	IO_PORT_32_BIT	0x0c

/* Bank 1 registers */
#define	REG1	0x01
#define	WORD_WIDTH	0x02
#define	INT_ENABLE	0x80
#define INT_NO_REG	0x02
#define	RCV_LOWER_LIMIT_REG	0x08
#define	RCV_UPPER_LIMIT_REG	0x09

#define	XMT_LOWER_LIMIT_REG_PRO 0x0a
#define	XMT_UPPER_LIMIT_REG_PRO 0x0b
#define	XMT_LOWER_LIMIT_REG_10  0x0b
#define	XMT_UPPER_LIMIT_REG_10  0x0a

/* Bank 2 registers */
#define	XMT_Chain_Int	0x20	/* Interrupt at the end of the transmit chain */
#define	XMT_Chain_ErrStop	0x40 /* Interrupt at the end of the chain even if there are errors */
#define	RCV_Discard_BadFrame	0x80 /* Throw bad frames away, and continue to receive others */
#define	REG2		0x02
#define	PRMSC_Mode	0x01
#define	Multi_IA	0x20
#define	REG3		0x03
#define	TPE_BIT		0x04
#define	BNC_BIT		0x20
#define	REG13		0x0d
#define	FDX		0x00
#define	A_N_ENABLE	0x02

#define	I_ADD_REG0	0x04
#define	I_ADD_REG1	0x05
#define	I_ADD_REG2	0x06
#define	I_ADD_REG3	0x07
#define	I_ADD_REG4	0x08
#define	I_ADD_REG5	0x09

#define	EEPROM_REG_PRO 0x0a
#define	EEPROM_REG_10  0x0b

#define EESK 0x01
#define EECS 0x02
#define EEDI 0x04
#define EEDO 0x08

/* do a full reset */
#define eepro_reset(ioaddr) outb(RESET_CMD, ioaddr)

/* do a nice reset */
#define eepro_sel_reset(ioaddr) 	{ \
					outb(SEL_RESET_CMD, ioaddr); \
					SLOW_DOWN; \
					SLOW_DOWN; \
					}

/* disable all interrupts */
#define eepro_dis_int(ioaddr) outb(ALL_MASK, ioaddr + INT_MASK_REG)

/* clear all interrupts */
#define eepro_clear_int(ioaddr) outb(ALL_MASK, ioaddr + STATUS_REG)

/* enable tx/rx */
#define eepro_en_int(ioaddr) outb(ALL_MASK & ~(RX_MASK | TX_MASK), \
							ioaddr + INT_MASK_REG)

/* enable exec event interrupt */
#define eepro_en_intexec(ioaddr) outb(ALL_MASK & ~(EXEC_MASK), ioaddr + INT_MASK_REG)

/* enable rx */
#define eepro_en_rx(ioaddr) outb(RCV_ENABLE_CMD, ioaddr)

/* disable rx */
#define eepro_dis_rx(ioaddr) outb(RCV_DISABLE_CMD, ioaddr)

/* switch bank */
#define eepro_sw2bank0(ioaddr) outb(BANK0_SELECT, ioaddr)
#define eepro_sw2bank1(ioaddr) outb(BANK1_SELECT, ioaddr)
#define eepro_sw2bank2(ioaddr) outb(BANK2_SELECT, ioaddr)

/* enable interrupt line */
#define eepro_en_intline(ioaddr) outb(inb(ioaddr + REG1) | INT_ENABLE,\
				ioaddr + REG1)

/* disable interrupt line */
#define eepro_dis_intline(ioaddr) outb(inb(ioaddr + REG1) & 0x7f, \
				ioaddr + REG1);

/* set diagnose flag */
#define eepro_diag(ioaddr) outb(DIAGNOSE_CMD, ioaddr)

/* ack for rx int */
#define eepro_ack_rx(ioaddr) outb (RX_INT, ioaddr + STATUS_REG)

/* ack for tx int */
#define eepro_ack_tx(ioaddr) outb (TX_INT, ioaddr + STATUS_REG)

/* a complete sel reset */
#define eepro_complete_selreset(ioaddr) { \
						dev->stats.tx_errors++;\
						eepro_sel_reset(ioaddr);\
						lp->tx_end = \
							lp->xmt_lower_limit;\
						lp->tx_start = lp->tx_end;\
						lp->tx_last = 0;\
						dev->trans_start = jiffies;\
						netif_wake_queue(dev);\
						eepro_en_rx(ioaddr);\
					}

/* Check for a network adaptor of this type, and return '0' if one exists.
   If dev->base_addr == 0, probe all likely locations.
   If dev->base_addr == 1, always return failure.
   If dev->base_addr == 2, allocate space for the device and return success
   (detachable devices only).
   */
static int __init do_eepro_probe(struct net_device *dev)
{
	int i;
	int base_addr = dev->base_addr;
	int irq = dev->irq;

#ifdef PnPWakeup
	/* XXXX for multiple cards should this only be run once? */

	/* Wakeup: */
	#define WakeupPort 0x279
	#define WakeupSeq    {0x6A, 0xB5, 0xDA, 0xED, 0xF6, 0xFB, 0x7D, 0xBE,\
	                      0xDF, 0x6F, 0x37, 0x1B, 0x0D, 0x86, 0xC3, 0x61,\
	                      0xB0, 0x58, 0x2C, 0x16, 0x8B, 0x45, 0xA2, 0xD1,\
	                      0xE8, 0x74, 0x3A, 0x9D, 0xCE, 0xE7, 0x73, 0x43}

	{
		unsigned short int WS[32]=WakeupSeq;

		if (request_region(WakeupPort, 2, "eepro wakeup")) {
			if (net_debug>5)
				printk(KERN_DEBUG "Waking UP\n");

			outb_p(0,WakeupPort);
			outb_p(0,WakeupPort);
			for (i=0; i<32; i++) {
				outb_p(WS[i],WakeupPort);
				if (net_debug>5) printk(KERN_DEBUG ": %#x ",WS[i]);
			}

			release_region(WakeupPort, 2);
		} else
			printk(KERN_WARNING "PnP wakeup region busy!\n");
	}
#endif

	if (base_addr > 0x1ff)		/* Check a single specified location. */
		return eepro_probe1(dev, 0);

	else if (base_addr != 0)	/* Don't probe at all. */
		return -ENXIO;

	for (i = 0; eepro_portlist[i]; i++) {
		dev->base_addr = eepro_portlist[i];
		dev->irq = irq;
		if (eepro_probe1(dev, 1) == 0)
			return 0;
	}

	return -ENODEV;
}

#ifndef MODULE
struct net_device * __init eepro_probe(int unit)
{
	struct net_device *dev = alloc_etherdev(sizeof(struct eepro_local));
	int err;

	if (!dev)
		return ERR_PTR(-ENODEV);

	sprintf(dev->name, "eth%d", unit);
	netdev_boot_setup_check(dev);

	err = do_eepro_probe(dev);
	if (err)
		goto out;
	return dev;
out:
	free_netdev(dev);
	return ERR_PTR(err);
}
#endif

static void __init printEEPROMInfo(struct net_device *dev)
{
	struct eepro_local *lp = (struct eepro_local *)dev->priv;
	int ioaddr = dev->base_addr;
	unsigned short Word;
	int i,j;

	j = ee_Checksum;
	for (i = 0; i < 8; i++)
		j += lp->word[i];
	for ( ; i < ee_SIZE; i++)
		j += read_eeprom(ioaddr, i, dev);

	printk(KERN_DEBUG "Checksum: %#x\n",j&0xffff);

	Word = lp->word[0];
	printk(KERN_DEBUG "Word0:\n");
	printk(KERN_DEBUG " Plug 'n Pray: %d\n",GetBit(Word,ee_PnP));
	printk(KERN_DEBUG " Buswidth: %d\n",(GetBit(Word,ee_BusWidth)+1)*8 );
	printk(KERN_DEBUG " AutoNegotiation: %d\n",GetBit(Word,ee_AutoNeg));
	printk(KERN_DEBUG " IO Address: %#x\n", (Word>>ee_IO0)<<4);

	if (net_debug>4)  {
		Word = lp->word[1];
		printk(KERN_DEBUG "Word1:\n");
		printk(KERN_DEBUG " INT: %d\n", Word & ee_IntMask);
		printk(KERN_DEBUG " LI: %d\n", GetBit(Word,ee_LI));
		printk(KERN_DEBUG " PC: %d\n", GetBit(Word,ee_PC));
		printk(KERN_DEBUG " TPE/AUI: %d\n", GetBit(Word,ee_TPE_AUI));
		printk(KERN_DEBUG " Jabber: %d\n", GetBit(Word,ee_Jabber));
		printk(KERN_DEBUG " AutoPort: %d\n", !GetBit(Word,ee_AutoPort));
		printk(KERN_DEBUG " Duplex: %d\n", GetBit(Word,ee_Duplex));
	}

	Word = lp->word[5];
	printk(KERN_DEBUG "Word5:\n");
	printk(KERN_DEBUG " BNC: %d\n",GetBit(Word,ee_BNC_TPE));
	printk(KERN_DEBUG " NumConnectors: %d\n",GetBit(Word,ee_NumConn));
	printk(KERN_DEBUG " Has ");
	if (GetBit(Word,ee_PortTPE)) printk(KERN_DEBUG "TPE ");
	if (GetBit(Word,ee_PortBNC)) printk(KERN_DEBUG "BNC ");
	if (GetBit(Word,ee_PortAUI)) printk(KERN_DEBUG "AUI ");
	printk(KERN_DEBUG "port(s) \n");

	Word = lp->word[6];
	printk(KERN_DEBUG "Word6:\n");
	printk(KERN_DEBUG " Stepping: %d\n",Word & ee_StepMask);
	printk(KERN_DEBUG " BoardID: %d\n",Word>>ee_BoardID);

	Word = lp->word[7];
	printk(KERN_DEBUG "Word7:\n");
	printk(KERN_DEBUG " INT to IRQ:\n");

	for (i=0, j=0; i<15; i++)
		if (GetBit(Word,i)) printk(KERN_DEBUG " INT%d -> IRQ %d;",j++,i);

	printk(KERN_DEBUG "\n");
}

/* function to recalculate the limits of buffer based on rcv_ram */
static void eepro_recalc (struct net_device *dev)
{
	struct eepro_local *	lp;

	lp = netdev_priv(dev);
	lp->xmt_ram = RAM_SIZE - lp->rcv_ram;

	if (lp->eepro == LAN595FX_10ISA) {
		lp->xmt_lower_limit = XMT_START_10;
		lp->xmt_upper_limit = (lp->xmt_ram - 2);
		lp->rcv_lower_limit = lp->xmt_ram;
		lp->rcv_upper_limit = (RAM_SIZE - 2);
	}
	else {
		lp->rcv_lower_limit = RCV_START_PRO;
		lp->rcv_upper_limit = (lp->rcv_ram - 2);
		lp->xmt_lower_limit = lp->rcv_ram;
		lp->xmt_upper_limit = (RAM_SIZE - 2);
	}
}

/* prints boot-time info */
static void __init eepro_print_info (struct net_device *dev)
{
	struct eepro_local *	lp = netdev_priv(dev);
	int			i;
	const char *		ifmap[] = {"AUI", "10Base2", "10BaseT"};

	i = inb(dev->base_addr + ID_REG);
	printk(KERN_DEBUG " id: %#x ",i);
	printk(" io: %#x ", (unsigned)dev->base_addr);

	switch (lp->eepro) {
		case LAN595FX_10ISA:
			printk("%s: Intel EtherExpress 10 ISA\n at %#x,",
					dev->name, (unsigned)dev->base_addr);
			break;
		case LAN595FX:
			printk("%s: Intel EtherExpress Pro/10+ ISA\n at %#x,",
					dev->name, (unsigned)dev->base_addr);
			break;
		case LAN595TX:
			printk("%s: Intel EtherExpress Pro/10 ISA at %#x,",
					dev->name, (unsigned)dev->base_addr);
			break;
		case LAN595:
			printk("%s: Intel 82595-based lan card at %#x,",
					dev->name, (unsigned)dev->base_addr);
			break;
	}

	printk(" %pM", dev->dev_addr);

	if (net_debug > 3)
		printk(KERN_DEBUG ", %dK RCV buffer",
				(int)(lp->rcv_ram)/1024);

	if (dev->irq > 2)
		printk(", IRQ %d, %s.\n", dev->irq, ifmap[dev->if_port]);
	else
		printk(", %s.\n", ifmap[dev->if_port]);

	if (net_debug > 3) {
		i = lp->word[5];
		if (i & 0x2000) /* bit 13 of EEPROM word 5 */
			printk(KERN_DEBUG "%s: Concurrent Processing is "
				"enabled but not used!\n", dev->name);
	}

	/* Check the station address for the manufacturer's code */
	if (net_debug>3)
		printEEPROMInfo(dev);
}

static const struct ethtool_ops eepro_ethtool_ops;

/* This is the real probe routine.  Linux has a history of friendly device
   probes on the ISA bus.  A good device probe avoids doing writes, and
   verifies that the correct device exists and functions.  */

static int __init eepro_probe1(struct net_device *dev, int autoprobe)
{
	unsigned short station_addr[3], id, counter;
	int i;
	struct eepro_local *lp;
	int ioaddr = dev->base_addr;
	int err;

	/* Grab the region so we can find another board if autoIRQ fails. */
	if (!request_region(ioaddr, EEPRO_IO_EXTENT, DRV_NAME)) {
		if (!autoprobe)
			printk(KERN_WARNING "EEPRO: io-port 0x%04x in use \n",
				ioaddr);
		return -EBUSY;
	}

	/* Now, we are going to check for the signature of the
	   ID_REG (register 2 of bank 0) */

	id = inb(ioaddr + ID_REG);

	if ((id & ID_REG_MASK) != ID_REG_SIG)
		goto exit;

	/* We seem to have the 82595 signature, let's
	   play with its counter (last 2 bits of
	   register 2 of bank 0) to be sure. */

	counter = id & R_ROBIN_BITS;

	if ((inb(ioaddr + ID_REG) & R_ROBIN_BITS) != (counter + 0x40))
		goto exit;

	lp = netdev_priv(dev);
	memset(lp, 0, sizeof(struct eepro_local));
	lp->xmt_bar = XMT_BAR_PRO;
	lp->xmt_lower_limit_reg = XMT_LOWER_LIMIT_REG_PRO;
	lp->xmt_upper_limit_reg = XMT_UPPER_LIMIT_REG_PRO;
	lp->eeprom_reg = EEPROM_REG_PRO;
	spin_lock_init(&lp->lock);

	/* Now, get the ethernet hardware address from
	   the EEPROM */
	station_addr[0] = read_eeprom(ioaddr, 2, dev);

	/* FIXME - find another way to know that we've found
	 * an Etherexpress 10
	 */
	if (station_addr[0] == 0x0000 || station_addr[0] == 0xffff) {
		lp->eepro = LAN595FX_10ISA;
		lp->eeprom_reg = EEPROM_REG_10;
		lp->xmt_lower_limit_reg = XMT_LOWER_LIMIT_REG_10;
		lp->xmt_upper_limit_reg = XMT_UPPER_LIMIT_REG_10;
		lp->xmt_bar = XMT_BAR_10;
		station_addr[0] = read_eeprom(ioaddr, 2, dev);
	}

	/* get all words at once. will be used here and for ethtool */
	for (i = 0; i < 8; i++) {
		lp->word[i] = read_eeprom(ioaddr, i, dev);
	}
	station_addr[1] = lp->word[3];
	station_addr[2] = lp->word[4];

	if (!lp->eepro) {
		if (lp->word[7] == ee_FX_INT2IRQ)
			lp->eepro = 2;
		else if (station_addr[2] == SA_ADDR1)
			lp->eepro = 1;
	}

	/* Fill in the 'dev' fields. */
	for (i=0; i < 6; i++)
		dev->dev_addr[i] = ((unsigned char *) station_addr)[5-i];

	/* RX buffer must be more than 3K and less than 29K */
	if (dev->mem_end < 3072 || dev->mem_end > 29696)
		lp->rcv_ram = RCV_DEFAULT_RAM;

	/* calculate {xmt,rcv}_{lower,upper}_limit */
	eepro_recalc(dev);

	if (GetBit(lp->word[5], ee_BNC_TPE))
		dev->if_port = BNC;
	else
		dev->if_port = TPE;

 	if (dev->irq < 2 && lp->eepro != 0) {
 		/* Mask off INT number */
 		int count = lp->word[1] & 7;
 		unsigned irqMask = lp->word[7];

 		while (count--)
 			irqMask &= irqMask - 1;

 		count = ffs(irqMask);

 		if (count)
 			dev->irq = count - 1;

 		if (dev->irq < 2) {
 			printk(KERN_ERR " Duh! illegal interrupt vector stored in EEPROM.\n");
 			goto exit;
 		} else if (dev->irq == 2) {
 			dev->irq = 9;
 		}
 	}

 	dev->open               = eepro_open;
 	dev->stop               = eepro_close;
 	dev->hard_start_xmit    = eepro_send_packet;
 	dev->set_multicast_list = &set_multicast_list;
 	dev->tx_timeout		= eepro_tx_timeout;
 	dev->watchdog_timeo	= TX_TIMEOUT;
	dev->ethtool_ops	= &eepro_ethtool_ops;

	/* print boot time info */
	eepro_print_info(dev);

	/* reset 82595 */
	eepro_reset(ioaddr);

	err = register_netdev(dev);
	if (err)
		goto err;
	return 0;
exit:
	err = -ENODEV;
err:
 	release_region(dev->base_addr, EEPRO_IO_EXTENT);
 	return err;
}

/* Open/initialize the board.  This is called (in the current kernel)
   sometime after booting when the 'ifconfig' program is run.

   This routine should set everything up anew at each open, even
   registers that "should" only need to be set once at boot, so that
   there is non-reboot way to recover if something goes wrong.
   */

static char irqrmap[] = {-1,-1,0,1,-1,2,-1,-1,-1,0,3,4,-1,-1,-1,-1};
static char irqrmap2[] = {-1,-1,4,0,1,2,-1,3,-1,4,5,6,7,-1,-1,-1};
static int	eepro_grab_irq(struct net_device *dev)
{
	int irqlist[] = { 3, 4, 5, 7, 9, 10, 11, 12, 0 };
	int *irqp = irqlist, temp_reg, ioaddr = dev->base_addr;

	eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */

	/* Enable the interrupt line. */
	eepro_en_intline(ioaddr);

	/* be CAREFUL, BANK 0 now */
	eepro_sw2bank0(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	/* Let EXEC event to interrupt */
	eepro_en_intexec(ioaddr);

	do {
		eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */

		temp_reg = inb(ioaddr + INT_NO_REG);
		outb((temp_reg & 0xf8) | irqrmap[*irqp], ioaddr + INT_NO_REG);

		eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */

		if (request_irq (*irqp, NULL, IRQF_SHARED, "bogus", dev) != EBUSY) {
			unsigned long irq_mask;
			/* Twinkle the interrupt, and check if it's seen */
			irq_mask = probe_irq_on();

			eepro_diag(ioaddr); /* RESET the 82595 */
			mdelay(20);

			if (*irqp == probe_irq_off(irq_mask))  /* It's a good IRQ line */
				break;

			/* clear all interrupts */
			eepro_clear_int(ioaddr);
		}
	} while (*++irqp);

	eepro_sw2bank1(ioaddr); /* Switch back to Bank 1 */

	/* Disable the physical interrupt line. */
	eepro_dis_intline(ioaddr);

	eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */

	/* Mask all the interrupts. */
	eepro_dis_int(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	return dev->irq;
}

static int eepro_open(struct net_device *dev)
{
	unsigned short temp_reg, old8, old9;
	int irqMask;
	int i, ioaddr = dev->base_addr;
	struct eepro_local *lp = netdev_priv(dev);

	if (net_debug > 3)
		printk(KERN_DEBUG "%s: entering eepro_open routine.\n", dev->name);

	irqMask = lp->word[7];

	if (lp->eepro == LAN595FX_10ISA) {
		if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 3;\n");
	}
	else if (irqMask == ee_FX_INT2IRQ) /* INT to IRQ Mask */
		{
			lp->eepro = 2; /* Yes, an Intel EtherExpress Pro/10+ */
			if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 2;\n");
		}

	else if ((dev->dev_addr[0] == SA_ADDR0 &&
			dev->dev_addr[1] == SA_ADDR1 &&
			dev->dev_addr[2] == SA_ADDR2))
		{
			lp->eepro = 1;
			if (net_debug > 3) printk(KERN_DEBUG "p->eepro = 1;\n");
		}  /* Yes, an Intel EtherExpress Pro/10 */

	else lp->eepro = 0; /* No, it is a generic 82585 lan card */

	/* Get the interrupt vector for the 82595 */
	if (dev->irq < 2 && eepro_grab_irq(dev) == 0) {
		printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq);
		return -EAGAIN;
	}

	if (request_irq(dev->irq , &eepro_interrupt, 0, dev->name, dev)) {
		printk(KERN_ERR "%s: unable to get IRQ %d.\n", dev->name, dev->irq);
		return -EAGAIN;
	}

	/* Initialize the 82595. */

	eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
	temp_reg = inb(ioaddr + lp->eeprom_reg);

	lp->stepping = temp_reg >> 5;	/* Get the stepping number of the 595 */

	if (net_debug > 3)
		printk(KERN_DEBUG "The stepping of the 82595 is %d\n", lp->stepping);

	if (temp_reg & 0x10) /* Check the TurnOff Enable bit */
		outb(temp_reg & 0xef, ioaddr + lp->eeprom_reg);
	for (i=0; i < 6; i++)
		outb(dev->dev_addr[i] , ioaddr + I_ADD_REG0 + i);

	temp_reg = inb(ioaddr + REG1);    /* Setup Transmit Chaining */
	outb(temp_reg | XMT_Chain_Int | XMT_Chain_ErrStop /* and discard bad RCV frames */
		| RCV_Discard_BadFrame, ioaddr + REG1);

	temp_reg = inb(ioaddr + REG2); /* Match broadcast */
	outb(temp_reg | 0x14, ioaddr + REG2);

	temp_reg = inb(ioaddr + REG3);
	outb(temp_reg & 0x3f, ioaddr + REG3); /* clear test mode */

	/* Set the receiving mode */
	eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */

	/* Set the interrupt vector */
	temp_reg = inb(ioaddr + INT_NO_REG);
	if (lp->eepro == LAN595FX || lp->eepro == LAN595FX_10ISA)
		outb((temp_reg & 0xf8) | irqrmap2[dev->irq], ioaddr + INT_NO_REG);
	else outb((temp_reg & 0xf8) | irqrmap[dev->irq], ioaddr + INT_NO_REG);


	temp_reg = inb(ioaddr + INT_NO_REG);
	if (lp->eepro == LAN595FX || lp->eepro == LAN595FX_10ISA)
		outb((temp_reg & 0xf0) | irqrmap2[dev->irq] | 0x08,ioaddr+INT_NO_REG);
	else outb((temp_reg & 0xf8) | irqrmap[dev->irq], ioaddr + INT_NO_REG);

	if (net_debug > 3)
		printk(KERN_DEBUG "eepro_open: content of INT Reg is %x\n", temp_reg);


	/* Initialize the RCV and XMT upper and lower limits */
	outb(lp->rcv_lower_limit >> 8, ioaddr + RCV_LOWER_LIMIT_REG);
	outb(lp->rcv_upper_limit >> 8, ioaddr + RCV_UPPER_LIMIT_REG);
	outb(lp->xmt_lower_limit >> 8, ioaddr + lp->xmt_lower_limit_reg);
	outb(lp->xmt_upper_limit >> 8, ioaddr + lp->xmt_upper_limit_reg);

	/* Enable the interrupt line. */
	eepro_en_intline(ioaddr);

	/* Switch back to Bank 0 */
	eepro_sw2bank0(ioaddr);

	/* Let RX and TX events to interrupt */
	eepro_en_int(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	/* Initialize RCV */
	outw(lp->rcv_lower_limit, ioaddr + RCV_BAR);
	lp->rx_start = lp->rcv_lower_limit;
	outw(lp->rcv_upper_limit | 0xfe, ioaddr + RCV_STOP);

	/* Initialize XMT */
	outw(lp->xmt_lower_limit, ioaddr + lp->xmt_bar);
	lp->tx_start = lp->tx_end = lp->xmt_lower_limit;
	lp->tx_last = 0;

	/* Check for the i82595TX and i82595FX */
	old8 = inb(ioaddr + 8);
	outb(~old8, ioaddr + 8);

	if ((temp_reg = inb(ioaddr + 8)) == old8) {
		if (net_debug > 3)
			printk(KERN_DEBUG "i82595 detected!\n");
		lp->version = LAN595;
	}
	else {
		lp->version = LAN595TX;
		outb(old8, ioaddr + 8);
		old9 = inb(ioaddr + 9);

		if (irqMask==ee_FX_INT2IRQ) {
			if (net_debug > 3) {
				printk(KERN_DEBUG "IrqMask: %#x\n",irqMask);
				printk(KERN_DEBUG "i82595FX detected!\n");
			}
			lp->version = LAN595FX;
			outb(old9, ioaddr + 9);
			if (dev->if_port != TPE) {	/* Hopefully, this will fix the
							problem of using Pentiums and
							pro/10 w/ BNC. */
				eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
				temp_reg = inb(ioaddr + REG13);
				/* disable the full duplex mode since it is not
				applicable with the 10Base2 cable. */
				outb(temp_reg & ~(FDX | A_N_ENABLE), REG13);
				eepro_sw2bank0(ioaddr); /* be CAREFUL, BANK 0 now */
			}
		}
		else if (net_debug > 3) {
			printk(KERN_DEBUG "temp_reg: %#x  ~old9: %#x\n",temp_reg,((~old9)&0xff));
			printk(KERN_DEBUG "i82595TX detected!\n");
		}
	}

	eepro_sel_reset(ioaddr);

	netif_start_queue(dev);

	if (net_debug > 3)
		printk(KERN_DEBUG "%s: exiting eepro_open routine.\n", dev->name);

	/* enabling rx */
	eepro_en_rx(ioaddr);

	return 0;
}

static void eepro_tx_timeout (struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	int ioaddr = dev->base_addr;

	/* if (net_debug > 1) */
	printk (KERN_ERR "%s: transmit timed out, %s?\n", dev->name,
		"network cable problem");
	/* This is not a duplicate. One message for the console,
	   one for the log file  */
	printk (KERN_DEBUG "%s: transmit timed out, %s?\n", dev->name,
		"network cable problem");
	eepro_complete_selreset(ioaddr);
}


static int eepro_send_packet(struct sk_buff *skb, struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	unsigned long flags;
	int ioaddr = dev->base_addr;
	short length = skb->len;

	if (net_debug > 5)
		printk(KERN_DEBUG  "%s: entering eepro_send_packet routine.\n", dev->name);

	if (length < ETH_ZLEN) {
		if (skb_padto(skb, ETH_ZLEN))
			return 0;
		length = ETH_ZLEN;
	}
	netif_stop_queue (dev);

	eepro_dis_int(ioaddr);
	spin_lock_irqsave(&lp->lock, flags);

	{
		unsigned char *buf = skb->data;

		if (hardware_send_packet(dev, buf, length))
			/* we won't wake queue here because we're out of space */
			dev->stats.tx_dropped++;
		else {
		dev->stats.tx_bytes+=skb->len;
		dev->trans_start = jiffies;
			netif_wake_queue(dev);
		}

	}

	dev_kfree_skb (skb);

	/* You might need to clean up and record Tx statistics here. */
	/* dev->stats.tx_aborted_errors++; */

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: exiting eepro_send_packet routine.\n", dev->name);

	eepro_en_int(ioaddr);
	spin_unlock_irqrestore(&lp->lock, flags);

	return 0;
}


/*	The typical workload of the driver:
	Handle the network interface interrupts. */

static irqreturn_t
eepro_interrupt(int irq, void *dev_id)
{
	struct net_device *dev = dev_id;
	struct eepro_local *lp;
	int ioaddr, status, boguscount = 20;
	int handled = 0;

	lp = netdev_priv(dev);

        spin_lock(&lp->lock);

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: entering eepro_interrupt routine.\n", dev->name);

	ioaddr = dev->base_addr;

	while (((status = inb(ioaddr + STATUS_REG)) & (RX_INT|TX_INT)) && (boguscount--))
	{
		handled = 1;
		if (status & RX_INT) {
			if (net_debug > 4)
				printk(KERN_DEBUG "%s: packet received interrupt.\n", dev->name);

			eepro_dis_int(ioaddr);

			/* Get the received packets */
			eepro_ack_rx(ioaddr);
			eepro_rx(dev);

			eepro_en_int(ioaddr);
		}
		if (status & TX_INT) {
			if (net_debug > 4)
 				printk(KERN_DEBUG "%s: packet transmit interrupt.\n", dev->name);


			eepro_dis_int(ioaddr);

			/* Process the status of transmitted packets */
			eepro_ack_tx(ioaddr);
			eepro_transmit_interrupt(dev);

			eepro_en_int(ioaddr);
		}
	}

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: exiting eepro_interrupt routine.\n", dev->name);

	spin_unlock(&lp->lock);
	return IRQ_RETVAL(handled);
}

static int eepro_close(struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	int ioaddr = dev->base_addr;
	short temp_reg;

	netif_stop_queue(dev);

	eepro_sw2bank1(ioaddr); /* Switch back to Bank 1 */

	/* Disable the physical interrupt line. */
	temp_reg = inb(ioaddr + REG1);
	outb(temp_reg & 0x7f, ioaddr + REG1);

	eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */

	/* Flush the Tx and disable Rx. */
	outb(STOP_RCV_CMD, ioaddr);
	lp->tx_start = lp->tx_end = lp->xmt_lower_limit;
	lp->tx_last = 0;

	/* Mask all the interrupts. */
	eepro_dis_int(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	/* Reset the 82595 */
	eepro_reset(ioaddr);

	/* release the interrupt */
	free_irq(dev->irq, dev);

	/* Update the statistics here. What statistics? */

	return 0;
}

/* Set or clear the multicast filter for this adaptor.
 */
static void
set_multicast_list(struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	short ioaddr = dev->base_addr;
	unsigned short mode;
	struct dev_mc_list *dmi=dev->mc_list;

	if (dev->flags&(IFF_ALLMULTI|IFF_PROMISC) || dev->mc_count > 63)
	{
		eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
		mode = inb(ioaddr + REG2);
		outb(mode | PRMSC_Mode, ioaddr + REG2);
		mode = inb(ioaddr + REG3);
		outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */
		eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */
	}

	else if (dev->mc_count==0 )
	{
		eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
		mode = inb(ioaddr + REG2);
		outb(mode & 0xd6, ioaddr + REG2); /* Turn off Multi-IA and PRMSC_Mode bits */
		mode = inb(ioaddr + REG3);
		outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */
		eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */
	}

	else
	{
		unsigned short status, *eaddrs;
		int i, boguscount = 0;

		/* Disable RX and TX interrupts.  Necessary to avoid
		   corruption of the HOST_ADDRESS_REG by interrupt
		   service routines. */
		eepro_dis_int(ioaddr);

		eepro_sw2bank2(ioaddr); /* be CAREFUL, BANK 2 now */
		mode = inb(ioaddr + REG2);
		outb(mode | Multi_IA, ioaddr + REG2);
		mode = inb(ioaddr + REG3);
		outb(mode, ioaddr + REG3); /* writing reg. 3 to complete the update */
		eepro_sw2bank0(ioaddr); /* Return to BANK 0 now */
		outw(lp->tx_end, ioaddr + HOST_ADDRESS_REG);
		outw(MC_SETUP, ioaddr + IO_PORT);
		outw(0, ioaddr + IO_PORT);
		outw(0, ioaddr + IO_PORT);
		outw(6*(dev->mc_count + 1), ioaddr + IO_PORT);

		for (i = 0; i < dev->mc_count; i++)
		{
			eaddrs=(unsigned short *)dmi->dmi_addr;
			dmi=dmi->next;
			outw(*eaddrs++, ioaddr + IO_PORT);
			outw(*eaddrs++, ioaddr + IO_PORT);
			outw(*eaddrs++, ioaddr + IO_PORT);
		}

		eaddrs = (unsigned short *) dev->dev_addr;
		outw(eaddrs[0], ioaddr + IO_PORT);
		outw(eaddrs[1], ioaddr + IO_PORT);
		outw(eaddrs[2], ioaddr + IO_PORT);
		outw(lp->tx_end, ioaddr + lp->xmt_bar);
		outb(MC_SETUP, ioaddr);

		/* Update the transmit queue */
		i = lp->tx_end + XMT_HEADER + 6*(dev->mc_count + 1);

		if (lp->tx_start != lp->tx_end)
		{
			/* update the next address and the chain bit in the
			   last packet */
			outw(lp->tx_last + XMT_CHAIN, ioaddr + HOST_ADDRESS_REG);
			outw(i, ioaddr + IO_PORT);
			outw(lp->tx_last + XMT_COUNT, ioaddr + HOST_ADDRESS_REG);
			status = inw(ioaddr + IO_PORT);
			outw(status | CHAIN_BIT, ioaddr + IO_PORT);
			lp->tx_end = i ;
		}
		else {
			lp->tx_start = lp->tx_end = i ;
		}

		/* Acknowledge that the MC setup is done */
		do { /* We should be doing this in the eepro_interrupt()! */
			SLOW_DOWN;
			SLOW_DOWN;
			if (inb(ioaddr + STATUS_REG) & 0x08)
			{
				i = inb(ioaddr);
				outb(0x08, ioaddr + STATUS_REG);

				if (i & 0x20) { /* command ABORTed */
					printk(KERN_NOTICE "%s: multicast setup failed.\n",
						dev->name);
					break;
				} else if ((i & 0x0f) == 0x03)	{ /* MC-Done */
					printk(KERN_DEBUG "%s: set Rx mode to %d address%s.\n",
						dev->name, dev->mc_count,
						dev->mc_count > 1 ? "es":"");
					break;
				}
			}
		} while (++boguscount < 100);

		/* Re-enable RX and TX interrupts */
		eepro_en_int(ioaddr);
	}
	if (lp->eepro == LAN595FX_10ISA) {
		eepro_complete_selreset(ioaddr);
	}
	else
		eepro_en_rx(ioaddr);
}

/* The horrible routine to read a word from the serial EEPROM. */
/* IMPORTANT - the 82595 will be set to Bank 0 after the eeprom is read */

/* The delay between EEPROM clock transitions. */
#define eeprom_delay() { udelay(40); }
#define EE_READ_CMD (6 << 6)

int
read_eeprom(int ioaddr, int location, struct net_device *dev)
{
	int i;
	unsigned short retval = 0;
	struct eepro_local *lp = netdev_priv(dev);
	short ee_addr = ioaddr + lp->eeprom_reg;
	int read_cmd = location | EE_READ_CMD;
	short ctrl_val = EECS ;

	/* XXXX - black magic */
		eepro_sw2bank1(ioaddr);
		outb(0x00, ioaddr + STATUS_REG);
	/* XXXX - black magic */

	eepro_sw2bank2(ioaddr);
	outb(ctrl_val, ee_addr);

	/* Shift the read command bits out. */
	for (i = 8; i >= 0; i--) {
		short outval = (read_cmd & (1 << i)) ? ctrl_val | EEDI
			: ctrl_val;
		outb(outval, ee_addr);
		outb(outval | EESK, ee_addr);	/* EEPROM clock tick. */
		eeprom_delay();
		outb(outval, ee_addr);	/* Finish EEPROM a clock tick. */
		eeprom_delay();
	}
	outb(ctrl_val, ee_addr);

	for (i = 16; i > 0; i--) {
		outb(ctrl_val | EESK, ee_addr);	 eeprom_delay();
		retval = (retval << 1) | ((inb(ee_addr) & EEDO) ? 1 : 0);
		outb(ctrl_val, ee_addr);  eeprom_delay();
	}

	/* Terminate the EEPROM access. */
	ctrl_val &= ~EECS;
	outb(ctrl_val | EESK, ee_addr);
	eeprom_delay();
	outb(ctrl_val, ee_addr);
	eeprom_delay();
	eepro_sw2bank0(ioaddr);
	return retval;
}

static int
hardware_send_packet(struct net_device *dev, void *buf, short length)
{
	struct eepro_local *lp = netdev_priv(dev);
	short ioaddr = dev->base_addr;
	unsigned status, tx_available, last, end;

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: entering hardware_send_packet routine.\n", dev->name);

		/* determine how much of the transmit buffer space is available */
		if (lp->tx_end > lp->tx_start)
		tx_available = lp->xmt_ram - (lp->tx_end - lp->tx_start);
		else if (lp->tx_end < lp->tx_start)
			tx_available = lp->tx_start - lp->tx_end;
	else tx_available = lp->xmt_ram;

	if (((((length + 3) >> 1) << 1) + 2*XMT_HEADER) >= tx_available) {
		/* No space available ??? */
		return 1;
		}

		last = lp->tx_end;
		end = last + (((length + 3) >> 1) << 1) + XMT_HEADER;

	if (end >= lp->xmt_upper_limit + 2) { /* the transmit buffer is wrapped around */
		if ((lp->xmt_upper_limit + 2 - last) <= XMT_HEADER) {
				/* Arrrr!!!, must keep the xmt header together,
				several days were lost to chase this one down. */
			last = lp->xmt_lower_limit;
				end = last + (((length + 3) >> 1) << 1) + XMT_HEADER;
			}
		else end = lp->xmt_lower_limit + (end -
						lp->xmt_upper_limit + 2);
		}

		outw(last, ioaddr + HOST_ADDRESS_REG);
		outw(XMT_CMD, ioaddr + IO_PORT);
		outw(0, ioaddr + IO_PORT);
		outw(end, ioaddr + IO_PORT);
		outw(length, ioaddr + IO_PORT);

		if (lp->version == LAN595)
			outsw(ioaddr + IO_PORT, buf, (length + 3) >> 1);
		else {	/* LAN595TX or LAN595FX, capable of 32-bit I/O processing */
			unsigned short temp = inb(ioaddr + INT_MASK_REG);
			outb(temp | IO_32_BIT, ioaddr + INT_MASK_REG);
			outsl(ioaddr + IO_PORT_32_BIT, buf, (length + 3) >> 2);
			outb(temp & ~(IO_32_BIT), ioaddr + INT_MASK_REG);
		}

		/* A dummy read to flush the DRAM write pipeline */
		status = inw(ioaddr + IO_PORT);

		if (lp->tx_start == lp->tx_end) {
		outw(last, ioaddr + lp->xmt_bar);
			outb(XMT_CMD, ioaddr);
			lp->tx_start = last;   /* I don't like to change tx_start here */
		}
		else {
			/* update the next address and the chain bit in the
			last packet */

			if (lp->tx_end != last) {
				outw(lp->tx_last + XMT_CHAIN, ioaddr + HOST_ADDRESS_REG);
				outw(last, ioaddr + IO_PORT);
			}

			outw(lp->tx_last + XMT_COUNT, ioaddr + HOST_ADDRESS_REG);
			status = inw(ioaddr + IO_PORT);
			outw(status | CHAIN_BIT, ioaddr + IO_PORT);

			/* Continue the transmit command */
			outb(RESUME_XMT_CMD, ioaddr);
		}

		lp->tx_last = last;
		lp->tx_end = end;

		if (net_debug > 5)
			printk(KERN_DEBUG "%s: exiting hardware_send_packet routine.\n", dev->name);

	return 0;
}

static void
eepro_rx(struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	short ioaddr = dev->base_addr;
	short boguscount = 20;
	short rcv_car = lp->rx_start;
	unsigned rcv_event, rcv_status, rcv_next_frame, rcv_size;

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: entering eepro_rx routine.\n", dev->name);

	/* Set the read pointer to the start of the RCV */
	outw(rcv_car, ioaddr + HOST_ADDRESS_REG);

	rcv_event = inw(ioaddr + IO_PORT);

	while (rcv_event == RCV_DONE) {

		rcv_status = inw(ioaddr + IO_PORT);
		rcv_next_frame = inw(ioaddr + IO_PORT);
		rcv_size = inw(ioaddr + IO_PORT);

		if ((rcv_status & (RX_OK | RX_ERROR)) == RX_OK) {

			/* Malloc up new buffer. */
			struct sk_buff *skb;

			dev->stats.rx_bytes+=rcv_size;
			rcv_size &= 0x3fff;
			skb = dev_alloc_skb(rcv_size+5);
			if (skb == NULL) {
				printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
				dev->stats.rx_dropped++;
				rcv_car = lp->rx_start + RCV_HEADER + rcv_size;
				lp->rx_start = rcv_next_frame;
				outw(rcv_next_frame, ioaddr + HOST_ADDRESS_REG);

				break;
			}
			skb_reserve(skb,2);

			if (lp->version == LAN595)
				insw(ioaddr+IO_PORT, skb_put(skb,rcv_size), (rcv_size + 3) >> 1);
			else { /* LAN595TX or LAN595FX, capable of 32-bit I/O processing */
				unsigned short temp = inb(ioaddr + INT_MASK_REG);
				outb(temp | IO_32_BIT, ioaddr + INT_MASK_REG);
				insl(ioaddr+IO_PORT_32_BIT, skb_put(skb,rcv_size),
					(rcv_size + 3) >> 2);
				outb(temp & ~(IO_32_BIT), ioaddr + INT_MASK_REG);
			}

			skb->protocol = eth_type_trans(skb,dev);
			netif_rx(skb);
			dev->stats.rx_packets++;
		}

		else { /* Not sure will ever reach here,
			I set the 595 to discard bad received frames */
			dev->stats.rx_errors++;

			if (rcv_status & 0x0100)
				dev->stats.rx_over_errors++;

			else if (rcv_status & 0x0400)
				dev->stats.rx_frame_errors++;

			else if (rcv_status & 0x0800)
				dev->stats.rx_crc_errors++;

			printk(KERN_DEBUG "%s: event = %#x, status = %#x, next = %#x, size = %#x\n",
				dev->name, rcv_event, rcv_status, rcv_next_frame, rcv_size);
		}

		if (rcv_status & 0x1000)
			dev->stats.rx_length_errors++;

		rcv_car = lp->rx_start + RCV_HEADER + rcv_size;
		lp->rx_start = rcv_next_frame;

		if (--boguscount == 0)
			break;

		outw(rcv_next_frame, ioaddr + HOST_ADDRESS_REG);
		rcv_event = inw(ioaddr + IO_PORT);

	}
	if (rcv_car == 0)
		rcv_car = lp->rcv_upper_limit | 0xff;

	outw(rcv_car - 1, ioaddr + RCV_STOP);

	if (net_debug > 5)
		printk(KERN_DEBUG "%s: exiting eepro_rx routine.\n", dev->name);
}

static void
eepro_transmit_interrupt(struct net_device *dev)
{
	struct eepro_local *lp = netdev_priv(dev);
	short ioaddr = dev->base_addr;
	short boguscount = 25;
	short xmt_status;

	while ((lp->tx_start != lp->tx_end) && boguscount--) {

		outw(lp->tx_start, ioaddr + HOST_ADDRESS_REG);
		xmt_status = inw(ioaddr+IO_PORT);

		if (!(xmt_status & TX_DONE_BIT))
				break;

		xmt_status = inw(ioaddr+IO_PORT);
		lp->tx_start = inw(ioaddr+IO_PORT);

		netif_wake_queue (dev);

		if (xmt_status & TX_OK)
			dev->stats.tx_packets++;
		else {
			dev->stats.tx_errors++;
			if (xmt_status & 0x0400) {
				dev->stats.tx_carrier_errors++;
				printk(KERN_DEBUG "%s: carrier error\n",
					dev->name);
				printk(KERN_DEBUG "%s: XMT status = %#x\n",
					dev->name, xmt_status);
			}
			else {
				printk(KERN_DEBUG "%s: XMT status = %#x\n",
					dev->name, xmt_status);
				printk(KERN_DEBUG "%s: XMT status = %#x\n",
					dev->name, xmt_status);
			}
		}
		if (xmt_status & 0x000f) {
			dev->stats.collisions += (xmt_status & 0x000f);
		}

		if ((xmt_status & 0x0040) == 0x0) {
			dev->stats.tx_heartbeat_errors++;
		}
	}
}

static int eepro_ethtool_get_settings(struct net_device *dev,
					struct ethtool_cmd *cmd)
{
	struct eepro_local	*lp = (struct eepro_local *)dev->priv;

	cmd->supported = 	SUPPORTED_10baseT_Half |
				SUPPORTED_10baseT_Full |
				SUPPORTED_Autoneg;
	cmd->advertising =	ADVERTISED_10baseT_Half |
				ADVERTISED_10baseT_Full |
				ADVERTISED_Autoneg;

	if (GetBit(lp->word[5], ee_PortTPE)) {
		cmd->supported |= SUPPORTED_TP;
		cmd->advertising |= ADVERTISED_TP;
	}
	if (GetBit(lp->word[5], ee_PortBNC)) {
		cmd->supported |= SUPPORTED_BNC;
		cmd->advertising |= ADVERTISED_BNC;
	}
	if (GetBit(lp->word[5], ee_PortAUI)) {
		cmd->supported |= SUPPORTED_AUI;
		cmd->advertising |= ADVERTISED_AUI;
	}

	cmd->speed = SPEED_10;

	if (dev->if_port == TPE && lp->word[1] & ee_Duplex) {
		cmd->duplex = DUPLEX_FULL;
	}
	else {
		cmd->duplex = DUPLEX_HALF;
	}

	cmd->port = dev->if_port;
	cmd->phy_address = dev->base_addr;
	cmd->transceiver = XCVR_INTERNAL;

	if (lp->word[0] & ee_AutoNeg) {
		cmd->autoneg = 1;
	}

	return 0;
}

static void eepro_ethtool_get_drvinfo(struct net_device *dev,
					struct ethtool_drvinfo *drvinfo)
{
	strcpy(drvinfo->driver, DRV_NAME);
	strcpy(drvinfo->version, DRV_VERSION);
	sprintf(drvinfo->bus_info, "ISA 0x%lx", dev->base_addr);
}

static const struct ethtool_ops eepro_ethtool_ops = {
	.get_settings	= eepro_ethtool_get_settings,
	.get_drvinfo 	= eepro_ethtool_get_drvinfo,
};

#ifdef MODULE

#define MAX_EEPRO 8
static struct net_device *dev_eepro[MAX_EEPRO];

static int io[MAX_EEPRO] = {
  [0 ... MAX_EEPRO-1] = -1
};
static int irq[MAX_EEPRO];
static int mem[MAX_EEPRO] = {	/* Size of the rx buffer in KB */
  [0 ... MAX_EEPRO-1] = RCV_DEFAULT_RAM/1024
};
static int autodetect;

static int n_eepro;
/* For linux 2.1.xx */

MODULE_AUTHOR("Pascal Dupuis and others");
MODULE_DESCRIPTION("Intel i82595 ISA EtherExpressPro10/10+ driver");
MODULE_LICENSE("GPL");

module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
module_param_array(mem, int, NULL, 0);
module_param(autodetect, int, 0);
MODULE_PARM_DESC(io, "EtherExpress Pro/10 I/O base addres(es)");
MODULE_PARM_DESC(irq, "EtherExpress Pro/10 IRQ number(s)");
MODULE_PARM_DESC(mem, "EtherExpress Pro/10 Rx buffer size(es) in kB (3-29)");
MODULE_PARM_DESC(autodetect, "EtherExpress Pro/10 force board(s) detection (0-1)");

int __init init_module(void)
{
	struct net_device *dev;
	int i;
	if (io[0] == -1 && autodetect == 0) {
		printk(KERN_WARNING "eepro_init_module: Probe is very dangerous in ISA boards!\n");
		printk(KERN_WARNING "eepro_init_module: Please add \"autodetect=1\" to force probe\n");
		return -ENODEV;
	}
	else if (autodetect) {
		/* if autodetect is set then we must force detection */
		for (i = 0; i < MAX_EEPRO; i++) {
			io[i] = 0;
		}

		printk(KERN_INFO "eepro_init_module: Auto-detecting boards (May God protect us...)\n");
	}

	for (i = 0; io[i] != -1 && i < MAX_EEPRO; i++) {
		dev = alloc_etherdev(sizeof(struct eepro_local));
		if (!dev)
			break;

		dev->mem_end = mem[i];
		dev->base_addr = io[i];
		dev->irq = irq[i];

		if (do_eepro_probe(dev) == 0) {
			dev_eepro[n_eepro++] = dev;
			continue;
		}
		free_netdev(dev);
		break;
	}

	if (n_eepro)
		printk(KERN_INFO "%s", version);

	return n_eepro ? 0 : -ENODEV;
}

void __exit
cleanup_module(void)
{
	int i;

	for (i=0; i<n_eepro; i++) {
		struct net_device *dev = dev_eepro[i];
		unregister_netdev(dev);
		release_region(dev->base_addr, EEPRO_IO_EXTENT);
		free_netdev(dev);
	}
}
#endif /* MODULE */