summaryrefslogtreecommitdiff
path: root/drivers/net/sk98lin/skgesirq.c
blob: c9763e740182f09a54b19580e4e308a639f6d5b8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
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
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
/******************************************************************************
 *
 * Name:	skgesirq.c
 * Project:	GEnesis, PCI Gigabit Ethernet Adapter
 * Version:	$Revision: 1.83 $
 * Date:	$Date: 2003/02/05 15:10:59 $
 * Purpose:	Special IRQ module
 *
 ******************************************************************************/

/******************************************************************************
 *
 *	(C)Copyright 1998-2003 SysKonnect GmbH.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

/******************************************************************************
 *
 * History:
 *
 *	$Log: skgesirq.c,v $
 *	Revision 1.83  2003/02/05 15:10:59  rschmidt
 *	Fixed setting of PLinkSpeedUsed in SkHWLinkUp() when
 *	auto-negotiation is disabled.
 *	Editorial changes.
 *
 *	Revision 1.82  2003/01/29 13:34:33  rschmidt
 *	Added some typecasts to avoid compiler warnings.
 *
 *	Revision 1.81  2002/12/05 10:49:51  rschmidt
 *	Fixed missing Link Down Event for fiber (Bug Id #10768)
 *	Added reading of cable length when link is up
 *	Removed testing of unused error bits in PHY ISR
 *	Editorial changes.
 *
 *	Revision 1.80  2002/11/12 17:15:21  rschmidt
 *	Replaced SkPnmiGetVar() by ...MacStatistic() in SkMacParity().
 *	Editorial changes.
 *
 *	Revision 1.79  2002/10/14 15:14:51  rschmidt
 *	Changed clearing of IS_M1_PAR_ERR (MAC 1 Parity Error) in
 *	SkMacParity() depending on GIChipRev (HW-Bug #8).
 *	Added error messages for GPHY Auto-Negotiation Error and
 *	FIFO Overflow/Underrun in SkPhyIsrGmac().
 *	Editorial changes.
 *
 *	Revision 1.78  2002/10/10 15:54:29  mkarl
 *	changes for PLinkSpeedUsed
 *
 *	Revision 1.77  2002/09/12 08:58:51  rwahl
 *	Retrieve counters needed for XMAC errata workarounds directly because
 *	PNMI returns corrected counter values (e.g. #10620).
 *
 *	Revision 1.76  2002/08/16 15:21:54  rschmidt
 *	Replaced all if(GIChipId == CHIP_ID_GENESIS) with new entry GIGenesis.
 *	Replaced wrong 1st para pAC with IoC in SK_IN/OUT macros.
 *	Editorial changes.
 *
 *	Revision 1.75  2002/08/12 13:50:47  rschmidt
 *	Changed clearing of IS_M1_PAR_ERR (MAC 1 Parity Error) in
 *	SkMacParity() by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE (HW-Bug #8).
 *	Added clearing of IS_IRQ_TIST_OV and IS_IRQ_SENSOR in SkGeHwErr().
 *	Corrected handling of Link Up and Auto-Negotiation Over for GPHY.
 *	in SkGePortCheckUpGmac().
 *	Editorial changes.
 *
 *	Revision 1.74  2002/08/08 16:17:04  rschmidt
 *	Added PhyType check for SK_HWEV_SET_ROLE event (copper only)
 *	Changed Link Up check reading PHY Specific Status (YUKON)
 *	Editorial changes
 *
 *	Revision 1.73  2002/07/15 18:36:53  rwahl
 *	Editorial changes.
 *
 *	Revision 1.72  2002/07/15 15:46:26  rschmidt
 *	Added new event: SK_HWEV_SET_SPEED
 *	Editorial changes
 *
 *	Revision 1.71  2002/06/10 09:34:19  rschmidt
 *	Editorial changes
 *
 *	Revision 1.70  2002/06/05 08:29:18  rschmidt
 *	SkXmRxTxEnable() replaced by SkMacRxTxEnable().
 *	Editorial changes.
 *
 *	Revision 1.69  2002/04/25 13:03:49  rschmidt
 *	Changes for handling YUKON.
 *	Use of #ifdef OTHER_PHY to eliminate code for unused Phy types.
 *	Replaced all XMAC-access macros by functions: SkMacRxTxDisable(),
 *	SkMacIrqDisable().
 *	Added handling for GMAC FIFO in SkMacParity().
 *	Replaced all SkXm...() functions with SkMac...() to handle also
 *	YUKON's GMAC.
 *	Macros for XMAC PHY access PHY_READ(), PHY_WRITE() replaced
 *	by functions SkXmPhyRead(), SkXmPhyWrite().
 *	Disabling all PHY interrupts moved to SkMacIrqDisable().
 *	Added handling for GPHY IRQ in SkGeSirqIsr().
 *	Removed status parameter from MAC IRQ handler SkMacIrq().
 *	Added SkGePortCheckUpGmac(), SkPhyIsrGmac() for GMAC.
 *	Editorial changes
 *
 *	Revision 1.68  2002/02/26 15:24:53  rwahl
 *	Fix: no link with manual configuration (#10673). The previous fix for
 *	#10639 was removed. So for RLMT mode = CLS the RLMT may switch to
 *	misconfigured port. It should not occur for the other RLMT modes.
 *
 *	Revision 1.67  2001/11/20 09:19:58  rwahl
 *	Reworked bugfix #10639 (no dependency to RLMT mode).
 *
 *	Revision 1.66  2001/10/26 07:52:53  afischer
 *	Port switching bug in `check local link` mode
 *
 *	Revision 1.65  2001/02/23 13:41:51  gklug
 *	fix: PHYS2INST should be used correctly for Dual Net operation
 *	chg: do no longer work with older PNMI
 *
 *	Revision 1.64  2001/02/15 11:27:04  rassmann
 *	Working with RLMT v1 if SK_MAX_NETS undefined.
 *
 *	Revision 1.63  2001/02/06 10:44:23  mkunz
 *	- NetIndex added to interface functions of pnmi V4 with dual net support
 *
 *	Revision 1.62  2001/01/31 15:31:41  gklug
 *	fix: problem with autosensing an SR8800 switch
 *
 *	Revision 1.61  2000/11/09 11:30:09  rassmann
 *	WA: Waiting after releasing reset until BCom chip is accessible.
 *
 *	Revision 1.60  2000/10/18 12:37:48  cgoos
 *	Reinserted the comment for version 1.56.
 *
 *	Revision 1.59  2000/10/18 12:22:20  cgoos
 *	Added workaround for half duplex hangup.
 *
 *	Revision 1.58  2000/09/28 13:06:04  gklug
 *	fix: BCom may NOT be touched if XMAC is in RESET state
 *
 *	Revision 1.57  2000/09/08 12:38:39  cgoos
 *	Added forgotten variable declaration.
 *
 *	Revision 1.56  2000/09/08 08:12:13  cgoos
 *	Changed handling of parity errors in SkGeHwErr (correct reset of error).
 *
 *	Revision 1.55  2000/06/19 08:36:25  cgoos
 *	Changed comment.
 *
 *	Revision 1.54  2000/05/22 08:45:57  malthoff
 *	Fix: #10523 is valid for all BCom PHYs.
 *
 *	Revision 1.53  2000/05/19 10:20:30  cgoos
 *	Removed Solaris debug output code.
 *
 *	Revision 1.52  2000/05/19 10:19:37  cgoos
 *	Added PHY state check in HWLinkDown.
 *	Move PHY interrupt code to IS_EXT_REG case in SkGeSirqIsr.
 *
 *	Revision 1.51  2000/05/18 05:56:20  cgoos
 *	Fixed typo.
 *
 *	Revision 1.50  2000/05/17 12:49:49  malthoff
 *	Fixes BCom link bugs (#10523).
 *
 *	Revision 1.49  1999/12/17 11:02:50  gklug
 *	fix: read PHY_STAT of Broadcom chip more often to assure good status
 *
 *	Revision 1.48  1999/12/06 10:01:17  cgoos
 *	Added SET function for Role.
 *
 *	Revision 1.47  1999/11/22 13:34:24  cgoos
 *	Changed license header to GPL.
 *
 *	Revision 1.46  1999/09/16 10:30:07  cgoos
 *	Removed debugging output statement from Linux.
 *
 *	Revision 1.45  1999/09/16 07:32:55  cgoos
 *	Fixed dual-port copperfield bug (PHY_READ from resetted port).
 *	Removed some unused variables.
 *
 *	Revision 1.44  1999/08/03 15:25:04  cgoos
 *	Removed workaround for disabled interrupts in half duplex mode.
 *
 *	Revision 1.43  1999/08/03 14:27:58  cgoos
 *	Removed SENSE mode code from SkGePortCheckUpBcom.
 *
 *	Revision 1.42  1999/07/26 09:16:54  cgoos
 *	Added some typecasts to avoid compiler warnings.
 *
 *	Revision 1.41  1999/05/19 07:28:59  cgoos
 *	Changes for 1000Base-T.
 *
 *	Revision 1.40  1999/04/08 13:59:39  gklug
 *	fix: problem with 3Com switches endless RESTARTs
 *
 *	Revision 1.39  1999/03/08 10:10:52  gklug
 *	fix: AutoSensing did switch to next mode even if LiPa indicated offline
 *
 *	Revision 1.38  1999/03/08 09:49:03  gklug
 *	fix: Bug using pAC instead of IoC, causing AIX problems
 *	fix: change compare for Linux compiler bug workaround
 *
 *	Revision 1.37  1999/01/28 14:51:33  gklug
 *	fix: monitor for autosensing and extra RESETS the RX on wire counters
 *
 *	Revision 1.36  1999/01/22 09:19:55  gklug
 *	fix: Init DupMode and InitPauseMd are now called in RxTxEnable
 *
 *	Revision 1.35  1998/12/11 15:22:59  gklug
 *	chg: autosensing: check for receive if manual mode was guessed
 *	chg: simplified workaround for XMAC errata
 *	chg: wait additional 100 ms before link goes up.
 *	chg: autoneg timeout to 600 ms
 *	chg: restart autoneg even if configured to autonegotiation
 *
 *	Revision 1.34  1998/12/10 10:33:14  gklug
 *	add: more debug messages
 *	fix: do a new InitPhy if link went down (AutoSensing problem)
 *	chg: Check for zero shorts if link is NOT up
 *	chg: reset Port if link goes down
 *	chg: wait additional 100 ms when link comes up to check shorts
 *	fix: dummy read extended autoneg status to prevent link going down immediately
 *
 *	Revision 1.33  1998/12/07 12:18:29  gklug
 *	add: refinement of autosense mode: take into account the autoneg cap of LiPa
 *
 *	Revision 1.32  1998/12/07 07:11:21  gklug
 *	fix: compiler warning
 *
 *	Revision 1.31  1998/12/02 09:29:05  gklug
 *	fix: WA XMAC Errata: FCSCt check was not correct.
 *	fix: WA XMAC Errata: Prec Counter were NOT updated in case of short checks.
 *	fix: Clear Stat : now clears the Prev counters of all known Ports
 *
 *	Revision 1.30  1998/12/01 10:54:15  gklug
 *	dd: workaround for XMAC errata changed. Check RX count and CRC err Count, too.
 *
 *	Revision 1.29  1998/12/01 10:01:53  gklug
 *	fix: if MAC IRQ occurs during port down, this will be handled correctly
 *
 *	Revision 1.28  1998/11/26 16:22:11  gklug
 *	fix: bug in autosense if manual modes are used
 *
 *	Revision 1.27  1998/11/26 15:50:06  gklug
 *	fix: PNMI needs to set PLinkModeConf
 *
 *	Revision 1.26  1998/11/26 14:51:58  gklug
 *	add: AutoSensing functionalty
 *
 *	Revision 1.25  1998/11/26 07:34:37  gklug
 *	fix: Init PrevShorts when restarting port due to Link connection
 *
 *	Revision 1.24  1998/11/25 10:57:32  gklug
 *	fix: remove unreferenced local vars
 *
 *	Revision 1.23  1998/11/25 08:26:40  gklug
 *	fix: don't do a RESET on a starting or stopping port
 *
 *	Revision 1.22  1998/11/24 13:29:44  gklug
 *	add: Workaround for MAC parity errata
 *
 *	Revision 1.21  1998/11/18 15:31:06  gklug
 *	fix: lint bugs
 *
 *	Revision 1.20  1998/11/18 12:58:54  gklug
 *	fix: use PNMI query instead of hardware access
 *
 *	Revision 1.19  1998/11/18 12:54:55  gklug
 *	chg: add new workaround for XMAC Errata
 *	add: short event counter monitoring on active link too
 *
 *	Revision 1.18  1998/11/13 14:27:41  malthoff
 *	Bug Fix: Packet Arbiter Timeout was not cleared correctly
 *	for timeout on TX1 and TX2.
 *
 *	Revision 1.17  1998/11/04 07:01:59  cgoos
 *	Moved HW link poll sequence.
 *	Added call to SkXmRxTxEnable.
 *
 *	Revision 1.16  1998/11/03 13:46:03  gklug
 *	add: functionality of SET_LMODE and SET_FLOW_MODE
 *	fix: send RLMT LinkDown event when Port stop is given with LinkUp
 *
 *	Revision 1.15  1998/11/03 12:56:47  gklug
 *	fix: Needs more events
 *
 *	Revision 1.14  1998/10/30 07:36:35  gklug
 *	rmv: unnecessary code
 *
 *	Revision 1.13  1998/10/29 15:21:57  gklug
 *	add: Poll link feature for activating HW link
 *	fix: Deactivate HWLink when Port STOP is given
 *
 *	Revision 1.12  1998/10/28 07:38:57  cgoos
 *	Checking link status at begin of SkHWLinkUp.
 *
 *	Revision 1.11  1998/10/22 09:46:50  gklug
 *	fix SysKonnectFileId typo
 *
 *	Revision 1.10  1998/10/14 13:57:47  gklug
 *	add: Port start/stop event
 *
 *	Revision 1.9  1998/10/14 05:48:29  cgoos
 *	Added definition for Para.
 *
 *	Revision 1.8  1998/10/14 05:40:09  gklug
 *	add: Hardware Linkup signal used
 *
 *	Revision 1.7  1998/10/09 06:50:20  malthoff
 *	Remove ID_sccs by SysKonnectFileId.
 *
 *	Revision 1.6  1998/10/08 09:11:49  gklug
 *	add: clear IRQ commands
 *
 *	Revision 1.5  1998/10/02 14:27:35  cgoos
 *	Fixed some typos and wrong event names.
 *
 *	Revision 1.4  1998/10/02 06:24:17  gklug
 *	add: HW error function
 *	fix: OUT macros
 *
 *	Revision 1.3  1998/10/01 07:03:00  gklug
 *	add: ISR for the usual interrupt source register
 *
 *	Revision 1.2  1998/09/03 13:50:33  gklug
 *	add: function prototypes
 *
 *	Revision 1.1  1998/08/27 11:50:21  gklug
 *	initial revision
 *
 *
 *
 ******************************************************************************/

#include <config.h>

#ifdef CONFIG_SK98

/*
 *	Special Interrupt handler
 *
 *	The following abstract should show how this module is included
 *	in the driver path:
 *
 *	In the ISR of the driver the bits for frame transmission complete and
 *	for receive complete are checked and handled by the driver itself.
 *	The bits of the slow path mask are checked after that and then the
 *	entry into the so-called "slow path" is prepared. It is an implementors
 *	decision whether this is executed directly or just scheduled by
 *	disabling the mask. In the interrupt service routine some events may be
 *	generated, so it would be a good idea to call the EventDispatcher
 *	right after this ISR.
 *
 *	The Interrupt source register of the adapter is NOT read by this module.
 *  SO if the drivers implementor needs a while loop around the
 *	slow data paths interrupt bits, he needs to call the SkGeSirqIsr() for
 *	each loop entered.
 *
 *	However, the MAC Interrupt status registers are read in a while loop.
 *
 */

static const char SysKonnectFileId[] =
	"$Id: skgesirq.c,v 1.83 2003/02/05 15:10:59 rschmidt Exp $" ;

#include "h/skdrv1st.h"		/* Driver Specific Definitions */
#include "h/skgepnmi.h"		/* PNMI Definitions */
#include "h/skrlmt.h"		/* RLMT Definitions */
#include "h/skdrv2nd.h"		/* Adapter Control and Driver specific Def. */

/* local function prototypes */
static int	SkGePortCheckUpXmac(SK_AC*, SK_IOC, int);
static int	SkGePortCheckUpBcom(SK_AC*, SK_IOC, int);
static int	SkGePortCheckUpGmac(SK_AC*, SK_IOC, int);
static void	SkPhyIsrBcom(SK_AC*, SK_IOC, int, SK_U16);
static void	SkPhyIsrGmac(SK_AC*, SK_IOC, int, SK_U16);
#ifdef OTHER_PHY
static int	SkGePortCheckUpLone(SK_AC*, SK_IOC, int);
static int	SkGePortCheckUpNat(SK_AC*, SK_IOC, int);
static void	SkPhyIsrLone(SK_AC*, SK_IOC, int, SK_U16);
#endif /* OTHER_PHY */

/*
 * array of Rx counter from XMAC which are checked
 * in AutoSense mode to check whether a link is not able to auto-negotiate.
 */
static const SK_U16 SkGeRxRegs[]= {
	XM_RXF_64B,
	XM_RXF_127B,
	XM_RXF_255B,
	XM_RXF_511B,
	XM_RXF_1023B,
	XM_RXF_MAX_SZ
} ;

#ifdef __C2MAN__
/*
 *	Special IRQ function
 *
 *	General Description:
 *
 */
intro()
{}
#endif

/* Define return codes of SkGePortCheckUp and CheckShort */
#define	SK_HW_PS_NONE		0	/* No action needed */
#define	SK_HW_PS_RESTART	1	/* Restart needed */
#define	SK_HW_PS_LINK		2	/* Link Up actions needed */

/******************************************************************************
 *
 *	SkHWInitDefSense() - Default Autosensing mode initialization
 *
 * Description: sets the PLinkMode for HWInit
 *
 * Returns: N/A
 */
static void SkHWInitDefSense(
SK_AC	*pAC,	/* adapter context */
SK_IOC	IoC,	/* IO context */
int		Port)	/* Port Index (MAC_1 + n) */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */

	pPrt = &pAC->GIni.GP[Port];

	pPrt->PAutoNegTimeOut = 0;

	if (pPrt->PLinkModeConf != SK_LMODE_AUTOSENSE) {
		pPrt->PLinkMode = pPrt->PLinkModeConf;
		return;
	}

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
		("AutoSensing: First mode %d on Port %d\n",
		(int)SK_LMODE_AUTOFULL, Port));

	pPrt->PLinkMode = SK_LMODE_AUTOFULL;

	return;
}	/* SkHWInitDefSense */


/******************************************************************************
 *
 *	SkHWSenseGetNext() - Get Next Autosensing Mode
 *
 * Description: gets the appropriate next mode
 *
 * Note:
 *
 */
SK_U8 SkHWSenseGetNext(
SK_AC	*pAC,	/* adapter context */
SK_IOC	IoC,	/* IO context */
int		Port)	/* Port Index (MAC_1 + n) */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */

	pPrt = &pAC->GIni.GP[Port];

	pPrt->PAutoNegTimeOut = 0;

	if (pPrt->PLinkModeConf != SK_LMODE_AUTOSENSE) {
		/* Leave all as configured */
		return(pPrt->PLinkModeConf);
	}

	if (pPrt->PLinkMode == SK_LMODE_AUTOFULL) {
		/* Return next mode AUTOBOTH */
		return(SK_LMODE_AUTOBOTH);
	}

	/* Return default autofull */
	return(SK_LMODE_AUTOFULL);
}	/* SkHWSenseGetNext */


/******************************************************************************
 *
 *	SkHWSenseSetNext() - Autosensing Set next mode
 *
 * Description:	sets the appropriate next mode
 *
 * Returns: N/A
 */
void SkHWSenseSetNext(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		Port,		/* Port Index (MAC_1 + n) */
SK_U8	NewMode)	/* New Mode to be written in sense mode */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */

	pPrt = &pAC->GIni.GP[Port];

	pPrt->PAutoNegTimeOut = 0;

	if (pPrt->PLinkModeConf != SK_LMODE_AUTOSENSE) {
		return;
	}

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
		("AutoSensing: next mode %d on Port %d\n",
		(int)NewMode, Port));

	pPrt->PLinkMode = NewMode;

	return;
}	/* SkHWSenseSetNext */


/******************************************************************************
 *
 *	SkHWLinkDown() - Link Down handling
 *
 * Description: handles the hardware link down signal
 *
 * Returns: N/A
 */
void SkHWLinkDown(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		Port)		/* Port Index (MAC_1 + n) */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */

	pPrt = &pAC->GIni.GP[Port];

	/* Disable all MAC interrupts */
	SkMacIrqDisable(pAC, IoC, Port);

	/* Disable Receiver and Transmitter */
	SkMacRxTxDisable(pAC, IoC, Port);

	/* Init default sense mode */
	SkHWInitDefSense(pAC, IoC, Port);

	if (!pPrt->PHWLinkUp) {
		return;
	}

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
		("Link down Port %d\n", Port));

	/* Set Link to DOWN */
	pPrt->PHWLinkUp = SK_FALSE;

	/* Reset Port stati */
	pPrt->PLinkModeStatus = SK_LMODE_STAT_UNKNOWN;
	pPrt->PFlowCtrlStatus = SK_FLOW_STAT_NONE;
	pPrt->PLinkSpeedUsed = SK_LSPEED_STAT_INDETERMINATED;

	/* Re-init Phy especially when the AutoSense default is set now */
	SkMacInitPhy(pAC, IoC, Port, SK_FALSE);

	/* GP0: used for workaround of Rev. C Errata 2 */

	/* Do NOT signal to RLMT */

	/* Do NOT start the timer here */
}	/* SkHWLinkDown */


/******************************************************************************
 *
 *	SkHWLinkUp() - Link Up handling
 *
 * Description: handles the hardware link up signal
 *
 * Returns: N/A
 */
void SkHWLinkUp(
SK_AC	*pAC,	/* adapter context */
SK_IOC	IoC,	/* IO context */
int		Port)	/* Port Index (MAC_1 + n) */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */

	pPrt = &pAC->GIni.GP[Port];

	if (pPrt->PHWLinkUp) {
		/* We do NOT need to proceed on active link */
		return;
	}

	pPrt->PHWLinkUp = SK_TRUE;
	pPrt->PAutoNegFail = SK_FALSE;
	pPrt->PLinkModeStatus = SK_LMODE_STAT_UNKNOWN;

	if (pPrt->PLinkMode != SK_LMODE_AUTOHALF &&
	    pPrt->PLinkMode != SK_LMODE_AUTOFULL &&
	    pPrt->PLinkMode != SK_LMODE_AUTOBOTH) {
		/* Link is up and no Auto-negotiation should be done */

		/* Link speed should be the configured one */
		switch (pPrt->PLinkSpeed) {
		case SK_LSPEED_AUTO:
			/* default is 1000 Mbps */
		case SK_LSPEED_1000MBPS:
			pPrt->PLinkSpeedUsed = SK_LSPEED_STAT_1000MBPS;
			break;
		case SK_LSPEED_100MBPS:
			pPrt->PLinkSpeedUsed = SK_LSPEED_STAT_100MBPS;
			break;
		case SK_LSPEED_10MBPS:
			pPrt->PLinkSpeedUsed = SK_LSPEED_STAT_10MBPS;
			break;
		}

		/* Set Link Mode Status */
		if (pPrt->PLinkMode == SK_LMODE_FULL) {
			pPrt->PLinkModeStatus = SK_LMODE_STAT_FULL;
		}
		else {
			pPrt->PLinkModeStatus = SK_LMODE_STAT_HALF;
		}

		/* No flow control without auto-negotiation */
		pPrt->PFlowCtrlStatus = SK_FLOW_STAT_NONE;

		/* enable Rx/Tx */
		SkMacRxTxEnable(pAC, IoC, Port);
	}
}	/* SkHWLinkUp */


/******************************************************************************
 *
 *	SkMacParity() - MAC parity workaround
 *
 * Description: handles MAC parity errors correctly
 *
 * Returns: N/A
 */
static void SkMacParity(
SK_AC	*pAC,	/* adapter context */
SK_IOC	IoC,	/* IO context */
int		Port)	/* Port Index of the port failed */
{
	SK_EVPARA	Para;
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_U32		TxMax;		/* TxMax Counter */

	pPrt = &pAC->GIni.GP[Port];

	/* Clear IRQ Tx Parity Error */
	if (pAC->GIni.GIGenesis) {
		SK_OUT16(IoC, MR_ADDR(Port, TX_MFF_CTRL1), MFF_CLR_PERR);
	}
	else {
		/* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */
		SK_OUT8(IoC, MR_ADDR(Port, TX_GMF_CTRL_T),
			(SK_U8)((pAC->GIni.GIChipRev == 0) ? GMF_CLI_TX_FC : GMF_CLI_TX_PE));
	}

	if (pPrt->PCheckPar) {
		if (Port == MAC_1) {
			SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E016, SKERR_SIRQ_E016MSG);
		}
		else {
			SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E017, SKERR_SIRQ_E017MSG);
		}
		Para.Para64 = Port;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = Port;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);

		return;
	}

	/* Check whether frames with a size of 1k were sent */
	if (pAC->GIni.GIGenesis) {
		/* Snap statistic counters */
		(void)SkXmUpdateStats(pAC, IoC, Port);

		(void)SkXmMacStatistic(pAC, IoC, Port, XM_TXF_MAX_SZ, &TxMax);
	}
	else {
		(void)SkGmMacStatistic(pAC, IoC, Port, GM_TXF_1518B, &TxMax);
	}

	if (TxMax > 0) {
		/* From now on check the parity */
		pPrt->PCheckPar = SK_TRUE;
	}
}	/* SkMacParity */


/******************************************************************************
 *
 *	SkGeHwErr() - Hardware Error service routine
 *
 * Description: handles all HW Error interrupts
 *
 * Returns: N/A
 */
static void SkGeHwErr(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
SK_U32	HwStatus)	/* Interrupt status word */
{
	SK_EVPARA	Para;
	SK_U16		Word;

	if ((HwStatus & (IS_IRQ_MST_ERR | IS_IRQ_STAT)) != 0) {
		/* PCI Errors occured */
		if ((HwStatus & IS_IRQ_STAT) != 0) {
			SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E013, SKERR_SIRQ_E013MSG);
		}
		else {
			SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E012, SKERR_SIRQ_E012MSG);
		}

		/* Reset all bits in the PCI STATUS register */
		SK_IN16(IoC, PCI_C(PCI_STATUS), &Word);

		SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_ON);
		SK_OUT16(IoC, PCI_C(PCI_STATUS), Word | PCI_ERRBITS);
		SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_OFF);

		Para.Para64 = 0;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_ADAP_FAIL, Para);
	}

	if (pAC->GIni.GIGenesis) {
		if ((HwStatus & IS_NO_STAT_M1) != 0) {
			/* Ignore it */
			/* This situation is also indicated in the descriptor */
			SK_OUT16(IoC, MR_ADDR(MAC_1, RX_MFF_CTRL1), MFF_CLR_INSTAT);
		}

		if ((HwStatus & IS_NO_STAT_M2) != 0) {
			/* Ignore it */
			/* This situation is also indicated in the descriptor */
			SK_OUT16(IoC, MR_ADDR(MAC_2, RX_MFF_CTRL1), MFF_CLR_INSTAT);
		}

		if ((HwStatus & IS_NO_TIST_M1) != 0) {
			/* Ignore it */
			/* This situation is also indicated in the descriptor */
			SK_OUT16(IoC, MR_ADDR(MAC_1, RX_MFF_CTRL1), MFF_CLR_INTIST);
		}

		if ((HwStatus & IS_NO_TIST_M2) != 0) {
			/* Ignore it */
			/* This situation is also indicated in the descriptor */
			SK_OUT16(IoC, MR_ADDR(MAC_2, RX_MFF_CTRL1), MFF_CLR_INTIST);
		}
	}
	else {	/* YUKON */
		/* This is necessary only for Rx timing measurements */
		if ((HwStatus & IS_IRQ_TIST_OV) != 0) {
			/* Clear Time Stamp Timer IRQ */
			SK_OUT8(IoC, GMAC_TI_ST_CTRL, (SK_U8)GMT_ST_CLR_IRQ);
		}

		if ((HwStatus & IS_IRQ_SENSOR) != 0) {
			/* Clear I2C IRQ */
			SK_OUT32(IoC, B2_I2C_IRQ, I2C_CLR_IRQ);
		}
	}

	if ((HwStatus & IS_RAM_RD_PAR) != 0) {
		SK_OUT16(IoC, B3_RI_CTRL, RI_CLR_RD_PERR);
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E014, SKERR_SIRQ_E014MSG);
		Para.Para64 = 0;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_ADAP_FAIL, Para);
	}

	if ((HwStatus & IS_RAM_WR_PAR) != 0) {
		SK_OUT16(IoC, B3_RI_CTRL, RI_CLR_WR_PERR);
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E015, SKERR_SIRQ_E015MSG);
		Para.Para64 = 0;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_ADAP_FAIL, Para);
	}

	if ((HwStatus & IS_M1_PAR_ERR) != 0) {
		SkMacParity(pAC, IoC, MAC_1);
	}

	if ((HwStatus & IS_M2_PAR_ERR) != 0) {
		SkMacParity(pAC, IoC, MAC_2);
	}

	if ((HwStatus & IS_R1_PAR_ERR) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_R1_CSR, CSR_IRQ_CL_P);

		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E018, SKERR_SIRQ_E018MSG);
		Para.Para64 = MAC_1;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((HwStatus & IS_R2_PAR_ERR) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_R2_CSR, CSR_IRQ_CL_P);

		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E019, SKERR_SIRQ_E019MSG);
		Para.Para64 = MAC_2;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_2;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}
}	/* SkGeHwErr */


/******************************************************************************
 *
 *	SkGeSirqIsr() - Special Interrupt Service Routine
 *
 * Description: handles all non data transfer specific interrupts (slow path)
 *
 * Returns: N/A
 */
void SkGeSirqIsr(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
SK_U32	Istatus)	/* Interrupt status word */
{
	SK_EVPARA	Para;
	SK_U32		RegVal32;	/* Read register value */
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	unsigned	Len;
	SK_U64		Octets;
	SK_U16		PhyInt;
	SK_U16		PhyIMsk;
	int			i;

	if ((Istatus & IS_HW_ERR) != 0) {
		/* read the HW Error Interrupt source */
		SK_IN32(IoC, B0_HWE_ISRC, &RegVal32);

		SkGeHwErr(pAC, IoC, RegVal32);
	}

	/*
	 * Packet Timeout interrupts
	 */
	/* Check whether MACs are correctly initialized */
	if (((Istatus & (IS_PA_TO_RX1 | IS_PA_TO_TX1)) != 0) &&
		pAC->GIni.GP[MAC_1].PState == SK_PRT_RESET) {
		/* MAC 1 was not initialized but Packet timeout occured */
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E004,
			SKERR_SIRQ_E004MSG);
	}

	if (((Istatus & (IS_PA_TO_RX2 | IS_PA_TO_TX2)) != 0) &&
	    pAC->GIni.GP[MAC_2].PState == SK_PRT_RESET) {
		/* MAC 2 was not initialized but Packet timeout occured */
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E005,
			SKERR_SIRQ_E005MSG);
	}

	if ((Istatus & IS_PA_TO_RX1) != 0) {
		/* Means network is filling us up */
		SK_ERR_LOG(pAC, SK_ERRCL_HW | SK_ERRCL_INIT, SKERR_SIRQ_E002,
			SKERR_SIRQ_E002MSG);
		SK_OUT16(IoC, B3_PA_CTRL, PA_CLR_TO_RX1);
	}

	if ((Istatus & IS_PA_TO_RX2) != 0) {
		/* Means network is filling us up */
		SK_ERR_LOG(pAC, SK_ERRCL_HW | SK_ERRCL_INIT, SKERR_SIRQ_E003,
			SKERR_SIRQ_E003MSG);
		SK_OUT16(IoC, B3_PA_CTRL, PA_CLR_TO_RX2);
	}

	if ((Istatus & IS_PA_TO_TX1) != 0) {

		pPrt = &pAC->GIni.GP[0];

		/* May be a normal situation in a server with a slow network */
		SK_OUT16(IoC, B3_PA_CTRL, PA_CLR_TO_TX1);

		/*
		 * workaround: if in half duplex mode, check for Tx hangup.
		 * Read number of TX'ed bytes, wait for 10 ms, then compare
		 * the number with current value. If nothing changed, we assume
		 * that Tx is hanging and do a FIFO flush (see event routine).
		 */
		if ((pPrt->PLinkModeStatus == SK_LMODE_STAT_HALF ||
		    pPrt->PLinkModeStatus == SK_LMODE_STAT_AUTOHALF) &&
		    !pPrt->HalfDupTimerActive) {
			/*
			 * many more pack. arb. timeouts may come in between,
			 * we ignore those
			 */
			pPrt->HalfDupTimerActive = SK_TRUE;

			Len = sizeof(SK_U64);
			SkPnmiGetVar(pAC, IoC, OID_SKGE_STAT_TX_OCTETS, (char *)&Octets,
				&Len, (SK_U32) SK_PNMI_PORT_PHYS2INST(pAC, 0),
				pAC->Rlmt.Port[0].Net->NetNumber);

			pPrt->LastOctets = Octets;

			Para.Para32[0] = 0;
			SkTimerStart(pAC, IoC, &pPrt->HalfDupChkTimer, SK_HALFDUP_CHK_TIME,
				SKGE_HWAC, SK_HWEV_HALFDUP_CHK, Para);
		}
	}

	if ((Istatus & IS_PA_TO_TX2) != 0) {

		pPrt = &pAC->GIni.GP[1];

		/* May be a normal situation in a server with a slow network */
		SK_OUT16(IoC, B3_PA_CTRL, PA_CLR_TO_TX2);

		/* workaround: see above */
		if ((pPrt->PLinkModeStatus == SK_LMODE_STAT_HALF ||
		     pPrt->PLinkModeStatus == SK_LMODE_STAT_AUTOHALF) &&
		    !pPrt->HalfDupTimerActive) {
			pPrt->HalfDupTimerActive = SK_TRUE;

			Len = sizeof(SK_U64);
			SkPnmiGetVar(pAC, IoC, OID_SKGE_STAT_TX_OCTETS, (char *)&Octets,
				&Len, (SK_U32) SK_PNMI_PORT_PHYS2INST(pAC, 1),
				pAC->Rlmt.Port[1].Net->NetNumber);

			pPrt->LastOctets = Octets;

			Para.Para32[0] = 1;
			SkTimerStart(pAC, IoC, &pPrt->HalfDupChkTimer, SK_HALFDUP_CHK_TIME,
				SKGE_HWAC, SK_HWEV_HALFDUP_CHK, Para);
		}
	}

	/* Check interrupts of the particular queues */
	if ((Istatus & IS_R1_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_R1_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E006,
			SKERR_SIRQ_E006MSG);
		Para.Para64 = MAC_1;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((Istatus & IS_R2_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_R2_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E007,
			SKERR_SIRQ_E007MSG);
		Para.Para64 = MAC_2;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_2;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((Istatus & IS_XS1_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_XS1_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E008,
			SKERR_SIRQ_E008MSG);
		Para.Para64 = MAC_1;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((Istatus & IS_XA1_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_XA1_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E009,
			SKERR_SIRQ_E009MSG);
		Para.Para64 = MAC_1;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((Istatus & IS_XS2_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_XS2_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E010,
			SKERR_SIRQ_E010MSG);
		Para.Para64 = MAC_2;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_2;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((Istatus & IS_XA2_C) != 0) {
		/* Clear IRQ */
		SK_OUT32(IoC, B0_XA2_CSR, CSR_IRQ_CL_C);
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E011,
			SKERR_SIRQ_E011MSG);
		Para.Para64 = MAC_2;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
		Para.Para32[0] = MAC_2;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	/* External reg interrupt */
	if ((Istatus & IS_EXT_REG) != 0) {
		/* Test IRQs from PHY */
		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {

			pPrt = &pAC->GIni.GP[i];

			if (pPrt->PState == SK_PRT_RESET) {
				continue;
			}

			switch (pPrt->PhyType) {

			case SK_PHY_XMAC:
				break;

			case SK_PHY_BCOM:
				SkXmPhyRead(pAC, IoC, i, PHY_BCOM_INT_STAT, &PhyInt);
				SkXmPhyRead(pAC, IoC, i, PHY_BCOM_INT_MASK, &PhyIMsk);

				if ((PhyInt & ~PhyIMsk) != 0) {
					SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
						("Port %d Bcom Int: 0x%04X Mask: 0x%04X\n",
						i, PhyInt, PhyIMsk));
					SkPhyIsrBcom(pAC, IoC, i, PhyInt);
				}
				break;

			case SK_PHY_MARV_COPPER:
			case SK_PHY_MARV_FIBER:
				SkGmPhyRead(pAC, IoC, i, PHY_MARV_INT_STAT, &PhyInt);
				SkGmPhyRead(pAC, IoC, i, PHY_MARV_INT_MASK, &PhyIMsk);

				if ((PhyInt & PhyIMsk) != 0) {
					SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
						("Port %d Marv Int: 0x%04X Mask: 0x%04X\n",
						i, PhyInt, PhyIMsk));
					SkPhyIsrGmac(pAC, IoC, i, PhyInt);
				}
				break;

#ifdef OTHER_PHY
			case SK_PHY_LONE:
				SkXmPhyRead(pAC, IoC, i, PHY_LONE_INT_STAT, &PhyInt);
				SkXmPhyRead(pAC, IoC, i, PHY_LONE_INT_ENAB, &PhyIMsk);

				if ((PhyInt & PhyIMsk) != 0) {
					SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
						("Port %d Lone Int: %x Mask: %x\n",
						i, PhyInt, PhyIMsk));
					SkPhyIsrLone(pAC, IoC, i, PhyInt);
				}
				break;
			case SK_PHY_NAT:
				/* todo: National */
				break;
#endif /* OTHER_PHY */
			}
		}
	}

	/* I2C Ready interrupt */
	if ((Istatus & IS_I2C_READY) != 0) {
		SkI2cIsr(pAC, IoC);
	}

	if ((Istatus & IS_LNK_SYNC_M1) != 0) {
		/*
		 * We do NOT need the Link Sync interrupt, because it shows
		 * us only a link going down.
		 */
		/* clear interrupt */
		SK_OUT8(IoC, MR_ADDR(MAC_1, LNK_SYNC_CTRL), LED_CLR_IRQ);
	}

	/* Check MAC after link sync counter */
	if ((Istatus & IS_MAC1) != 0) {
		/* IRQ from MAC 1 */
		SkMacIrq(pAC, IoC, MAC_1);
	}

	if ((Istatus & IS_LNK_SYNC_M2) != 0) {
		/*
		 * We do NOT need the Link Sync interrupt, because it shows
		 * us only a link going down.
		 */
		/* clear interrupt */
		SK_OUT8(IoC, MR_ADDR(MAC_2, LNK_SYNC_CTRL), LED_CLR_IRQ);
	}

	/* Check MAC after link sync counter */
	if ((Istatus & IS_MAC2) != 0) {
		/* IRQ from MAC 2 */
		SkMacIrq(pAC, IoC, MAC_2);
	}

	/* Timer interrupt (served last) */
	if ((Istatus & IS_TIMINT) != 0) {
		SkHwtIsr(pAC, IoC);
	}
}	/* SkGeSirqIsr */


/******************************************************************************
 *
 * SkGePortCheckShorts() - Implementing XMAC Workaround Errata # 2
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 */
static int	SkGePortCheckShorts(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port)		/* Which port should be checked */
{
	SK_U32		Shorts;			/* Short Event Counter */
	SK_U32		CheckShorts;	/* Check value for Short Event Counter */
	SK_U64		RxCts;			/* Rx Counter (packets on network) */
	SK_U32		RxTmp;			/* Rx temp. Counter */
	SK_U32		FcsErrCts;		/* FCS Error Counter */
	SK_GEPORT	*pPrt;			/* GIni Port struct pointer */
	int			Rtv;			/* Return value */
	int			i;

	pPrt = &pAC->GIni.GP[Port];

	/* Default: no action */
	Rtv = SK_HW_PS_NONE;

	(void)SkXmUpdateStats(pAC, IoC, Port);

	/* Extra precaution: check for short Event counter */
	(void)SkXmMacStatistic(pAC, IoC, Port, XM_RXE_SHT_ERR, &Shorts);

	/*
	 * Read Rx counter (packets seen on the network and not necessarily
	 * really received.
	 */
	RxCts = 0;

	for (i = 0; i < sizeof(SkGeRxRegs)/sizeof(SkGeRxRegs[0]); i++) {
		(void)SkXmMacStatistic(pAC, IoC, Port, SkGeRxRegs[i], &RxTmp);
		RxCts += (SK_U64)RxTmp;
	}

	/* On default: check shorts against zero */
	CheckShorts = 0;

	/* Extra precaution on active links */
	if (pPrt->PHWLinkUp) {
		/* Reset Link Restart counter */
		pPrt->PLinkResCt = 0;
		pPrt->PAutoNegTOCt = 0;

		/* If link is up check for 2 */
		CheckShorts = 2;

		(void)SkXmMacStatistic(pAC, IoC, Port, XM_RXF_FCS_ERR, &FcsErrCts);

		if (pPrt->PLinkModeConf == SK_LMODE_AUTOSENSE &&
		    pPrt->PLipaAutoNeg == SK_LIPA_UNKNOWN &&
		    (pPrt->PLinkMode == SK_LMODE_HALF ||
			 pPrt->PLinkMode == SK_LMODE_FULL)) {
			/*
			 * This is autosensing and we are in the fallback
			 * manual full/half duplex mode.
			 */
			if (RxCts == pPrt->PPrevRx) {
				/* Nothing received, restart link */
				pPrt->PPrevFcs = FcsErrCts;
				pPrt->PPrevShorts = Shorts;

				return(SK_HW_PS_RESTART);
			}
			else {
				pPrt->PLipaAutoNeg = SK_LIPA_MANUAL;
			}
		}

		if (((RxCts - pPrt->PPrevRx) > pPrt->PRxLim) ||
		    (!(FcsErrCts - pPrt->PPrevFcs))) {
			/*
			 * Note: The compare with zero above has to be done the way shown,
			 * otherwise the Linux driver will have a problem.
			 */
			/*
			 * We received a bunch of frames or no CRC error occured on the
			 * network -> ok.
			 */
			pPrt->PPrevRx = RxCts;
			pPrt->PPrevFcs = FcsErrCts;
			pPrt->PPrevShorts = Shorts;

			return(SK_HW_PS_NONE);
		}

		pPrt->PPrevFcs = FcsErrCts;
	}


	if ((Shorts - pPrt->PPrevShorts) > CheckShorts) {
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Short Event Count Restart Port %d \n", Port));
		Rtv = SK_HW_PS_RESTART;
	}

	pPrt->PPrevShorts = Shorts;
	pPrt->PPrevRx = RxCts;

	return(Rtv);
}	/* SkGePortCheckShorts */


/******************************************************************************
 *
 * SkGePortCheckUp() - Check if the link is up
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int	SkGePortCheckUp(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port)		/* Which port should be checked */
{
	switch (pAC->GIni.GP[Port].PhyType) {
	case SK_PHY_XMAC:
		return(SkGePortCheckUpXmac(pAC, IoC, Port));
	case SK_PHY_BCOM:
		return(SkGePortCheckUpBcom(pAC, IoC, Port));
	case SK_PHY_MARV_COPPER:
	case SK_PHY_MARV_FIBER:
		return(SkGePortCheckUpGmac(pAC, IoC, Port));
#ifdef OTHER_PHY
	case SK_PHY_LONE:
		return(SkGePortCheckUpLone(pAC, IoC, Port));
	case SK_PHY_NAT:
		return(SkGePortCheckUpNat(pAC, IoC, Port));
#endif /* OTHER_PHY */
	}
	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUp */


/******************************************************************************
 *
 * SkGePortCheckUpXmac() - Implementing of the Workaround Errata # 2
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpXmac(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port)		/* Which port should be checked */
{
	SK_U32		Shorts;		/* Short Event Counter */
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	int			Done;
	SK_U32		GpReg;		/* General Purpose register value */
	SK_U16		Isrc;		/* Interrupt source register */
	SK_U16		IsrcSum;	/* Interrupt source register sum */
	SK_U16		LpAb;		/* Link Partner Ability */
	SK_U16		ResAb;		/* Resolved Ability */
	SK_U16		ExtStat;	/* Extended Status Register */
	SK_BOOL		AutoNeg;	/* Is Auto-negotiation used ? */
	SK_U8		NextMode;	/* Next AutoSensing Mode */

	pPrt = &pAC->GIni.GP[Port];

	if (pPrt->PHWLinkUp) {
		if (pPrt->PhyType != SK_PHY_XMAC) {
			return(SK_HW_PS_NONE);
		}
		else {
			return(SkGePortCheckShorts(pAC, IoC, Port));
		}
	}

	IsrcSum = pPrt->PIsave;
	pPrt->PIsave = 0;

	/* Now wait for each port's link */
	if (pPrt->PLinkMode == SK_LMODE_HALF || pPrt->PLinkMode == SK_LMODE_FULL) {
		AutoNeg = SK_FALSE;
	}
	else {
		AutoNeg = SK_TRUE;
	}

	if (pPrt->PLinkBroken) {
		/* Link was broken */
		XM_IN32(IoC, Port, XM_GP_PORT, &GpReg);

		if ((GpReg & XM_GP_INP_ASS) == 0) {
			/* The Link is in sync */
			XM_IN16(IoC, Port, XM_ISRC, &Isrc);
			IsrcSum |= Isrc;
			SkXmAutoNegLipaXmac(pAC, IoC, Port, IsrcSum);

			if ((Isrc & XM_IS_INP_ASS) == 0) {
				/* It has been in sync since last time */
				/* Restart the PORT */
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
					("Link in sync Restart Port %d\n", Port));

				(void)SkXmUpdateStats(pAC, IoC, Port);

				/* We now need to reinitialize the PrevShorts counter */
				(void)SkXmMacStatistic(pAC, IoC, Port, XM_RXE_SHT_ERR, &Shorts);
				pPrt->PPrevShorts = Shorts;

				pPrt->PLinkBroken = SK_FALSE;

				/*
				 * Link Restart Workaround:
				 *  it may be possible that the other Link side
				 *  restarts its link as well an we detect
				 *  another LinkBroken. To prevent this
				 *  happening we check for a maximum number
				 *  of consecutive restart. If those happens,
				 *  we do NOT restart the active link and
				 *  check whether the link is now o.k.
				 */
				pPrt->PLinkResCt++;

				pPrt->PAutoNegTimeOut = 0;

				if (pPrt->PLinkResCt < SK_MAX_LRESTART) {
					return(SK_HW_PS_RESTART);
				}

				pPrt->PLinkResCt = 0;

				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("Do NOT restart on Port %d %x %x\n", Port, Isrc, IsrcSum));
			}
			else {
				pPrt->PIsave = (SK_U16)(IsrcSum & XM_IS_AND);

				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("Save Sync/nosync Port %d %x %x\n", Port, Isrc, IsrcSum));

				/* Do nothing more if link is broken */
				return(SK_HW_PS_NONE);
			}
		}
		else {
			/* Do nothing more if link is broken */
			return(SK_HW_PS_NONE);
		}

	}
	else {
		/* Link was not broken, check if it is */
		XM_IN16(IoC, Port, XM_ISRC, &Isrc);
		IsrcSum |= Isrc;
		if ((Isrc & XM_IS_INP_ASS) != 0) {
			XM_IN16(IoC, Port, XM_ISRC, &Isrc);
			IsrcSum |= Isrc;
			if ((Isrc & XM_IS_INP_ASS) != 0) {
				XM_IN16(IoC, Port, XM_ISRC, &Isrc);
				IsrcSum |= Isrc;
				if ((Isrc & XM_IS_INP_ASS) != 0) {
					pPrt->PLinkBroken = SK_TRUE;
					/* Re-Init Link partner Autoneg flag */
					pPrt->PLipaAutoNeg = SK_LIPA_UNKNOWN;
					SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
						("Link broken Port %d\n", Port));

					/* Cable removed-> reinit sense mode */
					SkHWInitDefSense(pAC, IoC, Port);

					return(SK_HW_PS_RESTART);
				}
			}
		}
		else {
			SkXmAutoNegLipaXmac(pAC, IoC, Port, Isrc);
			if (SkGePortCheckShorts(pAC, IoC, Port) == SK_HW_PS_RESTART) {
				return(SK_HW_PS_RESTART);
			}
		}
	}

	/*
	 * here we usually can check whether the link is in sync and
	 * auto-negotiation is done.
	 */
	XM_IN32(IoC, Port, XM_GP_PORT, &GpReg);
	XM_IN16(IoC, Port, XM_ISRC, &Isrc);
	IsrcSum |= Isrc;

	SkXmAutoNegLipaXmac(pAC, IoC, Port, IsrcSum);

	if ((GpReg & XM_GP_INP_ASS) != 0 || (IsrcSum & XM_IS_INP_ASS) != 0) {
		if ((GpReg & XM_GP_INP_ASS) == 0) {
			/* Save Auto-negotiation Done interrupt only if link is in sync */
			pPrt->PIsave = (SK_U16)(IsrcSum & XM_IS_AND);
		}
#ifdef DEBUG
		if ((pPrt->PIsave & XM_IS_AND) != 0) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("AutoNeg done rescheduled Port %d\n", Port));
		}
#endif /* DEBUG */
		return(SK_HW_PS_NONE);
	}

	if (AutoNeg) {
		if ((IsrcSum & XM_IS_AND) != 0) {
			SkHWLinkUp(pAC, IoC, Port);
			Done = SkMacAutoNegDone(pAC, IoC, Port);
			if (Done != SK_AND_OK) {
				/* Get PHY parameters, for debugging only */
				SkXmPhyRead(pAC, IoC, Port, PHY_XMAC_AUNE_LP, &LpAb);
				SkXmPhyRead(pAC, IoC, Port, PHY_XMAC_RES_ABI, &ResAb);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg FAIL Port %d (LpAb %x, ResAb %x)\n",
					 Port, LpAb, ResAb));

				/* Try next possible mode */
				NextMode = SkHWSenseGetNext(pAC, IoC, Port);
				SkHWLinkDown(pAC, IoC, Port);
				if (Done == SK_AND_DUP_CAP) {
					/* GoTo next mode */
					SkHWSenseSetNext(pAC, IoC, Port, NextMode);
				}

				return(SK_HW_PS_RESTART);
			}
			/*
			 * Dummy Read extended status to prevent extra link down/ups
			 * (clear Page Received bit if set)
			 */
			SkXmPhyRead(pAC, IoC, Port, PHY_XMAC_AUNE_EXP, &ExtStat);
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("AutoNeg done Port %d\n", Port));
			return(SK_HW_PS_LINK);
		}

		/* AutoNeg not done, but HW link is up. Check for timeouts */
		pPrt->PAutoNegTimeOut++;
		if (pPrt->PAutoNegTimeOut >= SK_AND_MAX_TO) {
			/* Increase the Timeout counter */
			pPrt->PAutoNegTOCt++;

			/* Timeout occured */
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
				("AutoNeg timeout Port %d\n", Port));
			if (pPrt->PLinkModeConf == SK_LMODE_AUTOSENSE &&
				pPrt->PLipaAutoNeg != SK_LIPA_AUTO) {
				/* Set Link manually up */
				SkHWSenseSetNext(pAC, IoC, Port, SK_LMODE_FULL);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
					("Set manual full duplex Port %d\n", Port));
			}

			if (pPrt->PLinkModeConf == SK_LMODE_AUTOSENSE &&
				pPrt->PLipaAutoNeg == SK_LIPA_AUTO &&
				pPrt->PAutoNegTOCt >= SK_MAX_ANEG_TO) {
				/*
				 * This is rather complicated.
				 * we need to check here whether the LIPA_AUTO
				 * we saw before is false alert. We saw at one
				 * switch ( SR8800) that on boot time it sends
				 * just one auto-neg packet and does no further
				 * auto-negotiation.
				 * Solution: we restart the autosensing after
				 * a few timeouts.
				 */
				pPrt->PAutoNegTOCt = 0;
				pPrt->PLipaAutoNeg = SK_LIPA_UNKNOWN;
				SkHWInitDefSense(pAC, IoC, Port);
			}

			/* Do the restart */
			return(SK_HW_PS_RESTART);
		}
	}
	else {
		/* Link is up and we don't need more */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync(GP), Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);

		/*
		 * Link sync (GP) and so assume a good connection. But if not received
		 * a bunch of frames received in a time slot (maybe broken tx cable)
		 * the port is restart.
		 */
		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpXmac */


/******************************************************************************
 *
 * SkGePortCheckUpBcom() - Check if the link is up on Bcom PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpBcom(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC,	/* IO Context */
int		Port)	/* Which port should be checked */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	int			Done;
	SK_U16		Isrc;		/* Interrupt source register */
	SK_U16		PhyStat;	/* Phy Status Register */
	SK_U16		ResAb;		/* Master/Slave resolution */
	SK_U16		Ctrl;		/* Broadcom control flags */
#ifdef DEBUG
	SK_U16		LpAb;
	SK_U16		ExtStat;
#endif /* DEBUG */
	SK_BOOL		AutoNeg;	/* Is Auto-negotiation used ? */

	pPrt = &pAC->GIni.GP[Port];

	/* Check for No HCD Link events (#10523) */
	SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_INT_STAT, &Isrc);

#ifdef xDEBUG
	if ((Isrc & ~(PHY_B_IS_HCT | PHY_B_IS_LCT) ==
		(PHY_B_IS_SCR_S_ER | PHY_B_IS_RRS_CHANGE | PHY_B_IS_LRS_CHANGE)) {

		SK_U32	Stat1, Stat2, Stat3;

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_INT_MASK, &Stat1);
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"CheckUp1 - Stat: %x, Mask: %x",
			(void *)Isrc,
			(void *)Stat1);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_CTRL, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_STAT, &Stat2);
		Stat1 = Stat1 << 16 | Stat2;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_ADV, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_LP, &Stat3);
		Stat2 = Stat2 << 16 | Stat3;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"Ctrl/Stat: %x, AN Adv/LP: %x",
			(void *)Stat1,
			(void *)Stat2);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_EXP, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_EXT_STAT, &Stat2);
		Stat1 = Stat1 << 16 | Stat2;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_CTRL, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_STAT, &Stat3);
		Stat2 = Stat2 << 16 | Stat3;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"AN Exp/IEEE Ext: %x, 1000T Ctrl/Stat: %x",
			(void *)Stat1,
			(void *)Stat2);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_P_EXT_CTRL, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_P_EXT_STAT, &Stat2);
		Stat1 = Stat1 << 16 | Stat2;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUX_CTRL, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUX_STAT, &Stat3);
		Stat2 = Stat2 << 16 | Stat3;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"PHY Ext Ctrl/Stat: %x, Aux Ctrl/Stat: %x",
			(void *)Stat1,
			(void *)Stat2);
	}
#endif /* DEBUG */

	if ((Isrc & (PHY_B_IS_NO_HDCL /* | PHY_B_IS_NO_HDC */)) != 0) {
		/*
		 * Workaround BCom Errata:
		 *	enable and disable loopback mode if "NO HCD" occurs.
		 */
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_CTRL, &Ctrl);
		SkXmPhyWrite(pAC, IoC, Port, PHY_BCOM_CTRL,
			(SK_U16)(Ctrl | PHY_CT_LOOP));
		SkXmPhyWrite(pAC, IoC, Port, PHY_BCOM_CTRL,
			(SK_U16)(Ctrl & ~PHY_CT_LOOP));
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
			("No HCD Link event, Port %d\n", Port));
#ifdef xDEBUG
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"No HCD link event, port %d.",
			(void *)Port,
			(void *)NULL);
#endif /* DEBUG */
	}

	/* Not obsolete: link status bit is latched to 0 and autoclearing! */
	SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_STAT, &PhyStat);

	if (pPrt->PHWLinkUp) {
		return(SK_HW_PS_NONE);
	}

#ifdef xDEBUG
	{
		SK_U32	Stat1, Stat2, Stat3;

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_INT_MASK, &Stat1);
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"CheckUp1a - Stat: %x, Mask: %x",
			(void *)Isrc,
			(void *)Stat1);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_CTRL, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_STAT, &PhyStat);
		Stat1 = Stat1 << 16 | PhyStat;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_ADV, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_LP, &Stat3);
		Stat2 = Stat2 << 16 | Stat3;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"Ctrl/Stat: %x, AN Adv/LP: %x",
			(void *)Stat1,
			(void *)Stat2);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_EXP, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_EXT_STAT, &Stat2);
		Stat1 = Stat1 << 16 | Stat2;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_CTRL, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_STAT, &ResAb);
		Stat2 = Stat2 << 16 | ResAb;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"AN Exp/IEEE Ext: %x, 1000T Ctrl/Stat: %x",
			(void *)Stat1,
			(void *)Stat2);

		Stat1 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_P_EXT_CTRL, &Stat1);
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_P_EXT_STAT, &Stat2);
		Stat1 = Stat1 << 16 | Stat2;
		Stat2 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUX_CTRL, &Stat2);
		Stat3 = 0;
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUX_STAT, &Stat3);
		Stat2 = Stat2 << 16 | Stat3;
		CMSMPrintString(
			pAC->pConfigTable,
			MSG_TYPE_RUNTIME_INFO,
			"PHY Ext Ctrl/Stat: %x, Aux Ctrl/Stat: %x",
			(void *)Stat1,
			(void *)Stat2);
	}
#endif /* DEBUG */

	/* Now wait for each port's link */
	if (pPrt->PLinkMode == SK_LMODE_HALF || pPrt->PLinkMode == SK_LMODE_FULL) {
		AutoNeg = SK_FALSE;
	}
	else {
		AutoNeg = SK_TRUE;
	}

	/*
	 * Here we usually can check whether the link is in sync and
	 * auto-negotiation is done.
	 */

	SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_STAT, &PhyStat);

	SkMacAutoNegLipaPhy(pAC, IoC, Port, PhyStat);

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
		("AutoNeg: %d, PhyStat: 0x%04x\n", AutoNeg, PhyStat));

	SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_STAT, &ResAb);

	if ((ResAb & PHY_B_1000S_MSF) != 0) {
		/* Error */
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
			("Master/Slave Fault port %d\n", Port));
		pPrt->PAutoNegFail = SK_TRUE;
		pPrt->PMSStatus = SK_MS_STAT_FAULT;

		return(SK_HW_PS_RESTART);
	}

	if ((PhyStat & PHY_ST_LSYNC) == 0) {
		return(SK_HW_PS_NONE);
	}

	pPrt->PMSStatus = ((ResAb & PHY_B_1000S_MSR) != 0) ?
		SK_MS_STAT_MASTER : SK_MS_STAT_SLAVE;

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
		("AutoNeg: %d, PhyStat: 0x%04x\n", AutoNeg, PhyStat));

	if (AutoNeg) {
		if ((PhyStat & PHY_ST_AN_OVER) != 0) {
			SkHWLinkUp(pAC, IoC, Port);
			Done = SkMacAutoNegDone(pAC, IoC, Port);
			if (Done != SK_AND_OK) {
#ifdef DEBUG
				/* Get PHY parameters, for debugging only */
				SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_AUNE_LP, &LpAb);
				SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_1000T_STAT, &ExtStat);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg FAIL Port %d (LpAb %x, 1000TStat %x)\n",
					Port, LpAb, ExtStat));
#endif /* DEBUG */
				return(SK_HW_PS_RESTART);
			}
			else {
#ifdef xDEBUG
				/* Dummy read ISR to prevent extra link downs/ups */
				SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_INT_STAT, &ExtStat);

				if ((ExtStat & ~(PHY_B_IS_HCT | PHY_B_IS_LCT)) != 0) {
					CMSMPrintString(
						pAC->pConfigTable,
						MSG_TYPE_RUNTIME_INFO,
						"CheckUp2 - Stat: %x",
						(void *)ExtStat,
						(void *)NULL);
				}
#endif /* DEBUG */

				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg done Port %d\n", Port));
				return(SK_HW_PS_LINK);
			}
		}
	}
	else {	/* !AutoNeg */
		/* Link is up and we don't need more. */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */

#ifdef xDEBUG
		/* Dummy read ISR to prevent extra link downs/ups */
		SkXmPhyRead(pAC, IoC, Port, PHY_BCOM_INT_STAT, &ExtStat);

		if ((ExtStat & ~(PHY_B_IS_HCT | PHY_B_IS_LCT)) != 0) {
			CMSMPrintString(
				pAC->pConfigTable,
				MSG_TYPE_RUNTIME_INFO,
				"CheckUp3 - Stat: %x",
				(void *)ExtStat,
				(void *)NULL);
		}
#endif /* DEBUG */

		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync(GP), Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);
		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpBcom */


/******************************************************************************
 *
 * SkGePortCheckUpGmac() - Check if the link is up on Marvell PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpGmac(
SK_AC	*pAC,	/* Adapter Context */
SK_IOC	IoC,	/* IO Context */
int		Port)	/* Which port should be checked */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	int			Done;
	SK_U16		Isrc;		/* Interrupt source */
	SK_U16		PhyStat;	/* Phy Status */
	SK_U16		PhySpecStat;/* Phy Specific Status */
	SK_U16		ResAb;		/* Master/Slave resolution */
	SK_BOOL		AutoNeg;	/* Is Auto-negotiation used ? */

	pPrt = &pAC->GIni.GP[Port];

	/* Read PHY Interrupt Status */
	SkGmPhyRead(pAC, IoC, Port, PHY_MARV_INT_STAT, &Isrc);

	if ((Isrc & PHY_M_IS_AN_COMPL) != 0) {
		/* TBD */
	}

	if ((Isrc & PHY_M_IS_DOWNSH_DET) != 0) {
		/* TBD */
	}

	if (pPrt->PHWLinkUp) {
		return(SK_HW_PS_NONE);
	}

	/* Now wait for each port's link */
	if (pPrt->PLinkMode == SK_LMODE_HALF || pPrt->PLinkMode == SK_LMODE_FULL) {
		AutoNeg = SK_FALSE;
	}
	else {
		AutoNeg = SK_TRUE;
	}

	/* Read PHY Status */
	SkGmPhyRead(pAC, IoC, Port, PHY_MARV_STAT, &PhyStat);

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
		("AutoNeg: %d, PhyStat: 0x%04x\n", AutoNeg, PhyStat));

	SkMacAutoNegLipaPhy(pAC, IoC, Port, PhyStat);

	SkGmPhyRead(pAC, IoC, Port, PHY_MARV_1000T_STAT, &ResAb);

	if ((ResAb & PHY_B_1000S_MSF) != 0) {
		/* Error */
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
			("Master/Slave Fault port %d\n", Port));
		pPrt->PAutoNegFail = SK_TRUE;
		pPrt->PMSStatus = SK_MS_STAT_FAULT;

		return(SK_HW_PS_RESTART);
	}

	/* Read PHY Specific Status */
	SkGmPhyRead(pAC, IoC, Port, PHY_MARV_PHY_STAT, &PhySpecStat);

	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
		("AutoNeg: %d, PhySpecStat: 0x%04x\n", AutoNeg, PhySpecStat));

	if ((PhySpecStat & PHY_M_PS_LINK_UP) == 0) {
		return(SK_HW_PS_NONE);
	}

	pPrt->PMSStatus = ((ResAb & PHY_B_1000S_MSR) != 0) ?
		SK_MS_STAT_MASTER : SK_MS_STAT_SLAVE;

	pPrt->PCableLen = (SK_U8)((PhySpecStat & PHY_M_PS_CABLE_MSK) >> 7);

	if (AutoNeg) {
		/* Auto-Negotiation Over ? */
		if ((PhyStat & PHY_ST_AN_OVER) != 0) {

			SkHWLinkUp(pAC, IoC, Port);

			Done = SkMacAutoNegDone(pAC, IoC, Port);

			if (Done != SK_AND_OK) {
				return(SK_HW_PS_RESTART);
			}

			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("AutoNeg done Port %d\n", Port));
			return(SK_HW_PS_LINK);
		}
	}
	else {	/* !AutoNeg */
		/* Link is up and we don't need more */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */

		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync, Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);

		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpGmac */


#ifdef OTHER_PHY
/******************************************************************************
 *
 * SkGePortCheckUpLone() - Check if the link is up on Level One PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpLone(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port)		/* Which port should be checked */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	int			Done;
	SK_U16		Isrc;		/* Interrupt source register */
	SK_U16		LpAb;		/* Link Partner Ability */
	SK_U16		ExtStat;	/* Extended Status Register */
	SK_U16		PhyStat;	/* Phy Status Register */
	SK_U16		StatSum;
	SK_BOOL		AutoNeg;	/* Is Auto-negotiation used ? */
	SK_U8		NextMode;	/* Next AutoSensing Mode */

	pPrt = &pAC->GIni.GP[Port];

	if (pPrt->PHWLinkUp) {
		return(SK_HW_PS_NONE);
	}

	StatSum = pPrt->PIsave;
	pPrt->PIsave = 0;

	/* Now wait for each ports link */
	if (pPrt->PLinkMode == SK_LMODE_HALF || pPrt->PLinkMode == SK_LMODE_FULL) {
		AutoNeg = SK_FALSE;
	}
	else {
		AutoNeg = SK_TRUE;
	}

	/*
	 * here we usually can check whether the link is in sync and
	 * auto-negotiation is done.
	 */
	SkXmPhyRead(pAC, IoC, Port, PHY_LONE_STAT, &PhyStat);
	StatSum |= PhyStat;

	SkMacAutoNegLipaPhy(pAC, IoC, Port, PhyStat);

	if ((PhyStat & PHY_ST_LSYNC) == 0) {
		/* Save Auto-negotiation Done bit */
		pPrt->PIsave = (SK_U16)(StatSum & PHY_ST_AN_OVER);
#ifdef DEBUG
		if ((pPrt->PIsave & PHY_ST_AN_OVER) != 0) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("AutoNeg done rescheduled Port %d\n", Port));
		}
#endif /* DEBUG */
		return(SK_HW_PS_NONE);
	}

	if (AutoNeg) {
		if ((StatSum & PHY_ST_AN_OVER) != 0) {
			SkHWLinkUp(pAC, IoC, Port);
			Done = SkMacAutoNegDone(pAC, IoC, Port);
			if (Done != SK_AND_OK) {
				/* Get PHY parameters, for debugging only */
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_AUNE_LP, &LpAb);
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_1000T_STAT, &ExtStat);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg FAIL Port %d (LpAb %x, 1000TStat %x)\n",
					 Port, LpAb, ExtStat));

				/* Try next possible mode */
				NextMode = SkHWSenseGetNext(pAC, IoC, Port);
				SkHWLinkDown(pAC, IoC, Port);
				if (Done == SK_AND_DUP_CAP) {
					/* GoTo next mode */
					SkHWSenseSetNext(pAC, IoC, Port, NextMode);
				}

				return(SK_HW_PS_RESTART);

			}
			else {
				/*
				 * Dummy Read interrupt status to prevent
				 * extra link down/ups
				 */
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_INT_STAT, &ExtStat);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg done Port %d\n", Port));
				return(SK_HW_PS_LINK);
			}
		}

		/* AutoNeg not done, but HW link is up. Check for timeouts */
		pPrt->PAutoNegTimeOut++;
		if (pPrt->PAutoNegTimeOut >= SK_AND_MAX_TO) {
			/* Timeout occured */
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
				("AutoNeg timeout Port %d\n", Port));
			if (pPrt->PLinkModeConf == SK_LMODE_AUTOSENSE &&
				pPrt->PLipaAutoNeg != SK_LIPA_AUTO) {
				/* Set Link manually up */
				SkHWSenseSetNext(pAC, IoC, Port, SK_LMODE_FULL);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
					("Set manual full duplex Port %d\n", Port));
			}

			/* Do the restart */
			return(SK_HW_PS_RESTART);
		}
	}
	else {
		/* Link is up and we don't need more */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */

		/*
		 * Dummy Read interrupt status to prevent
		 * extra link down/ups
		 */
		SkXmPhyRead(pAC, IoC, Port, PHY_LONE_INT_STAT, &ExtStat);

		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync(GP), Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);
		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpLone */


/******************************************************************************
 *
 * SkGePortCheckUpNat() - Check if the link is up on National PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpNat(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port)		/* Which port should be checked */
{
	/* todo: National */
	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpNat */
#endif /* OTHER_PHY */


/******************************************************************************
 *
 *	SkGeSirqEvent() - Event Service Routine
 *
 * Description:
 *
 * Notes:
 */
int	SkGeSirqEvent(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
SK_U32		Event,		/* Module specific Event */
SK_EVPARA	Para)		/* Event specific Parameter */
{
	SK_U64		Octets;
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_U32		Port;
	SK_U32		Time;
	unsigned	Len;
	int			PortStat;
	SK_U8		Val8;

	Port = Para.Para32[0];
	pPrt = &pAC->GIni.GP[Port];

	switch (Event) {
	case SK_HWEV_WATIM:
		/* Check whether port came up */
		PortStat = SkGePortCheckUp(pAC, IoC, Port);

		switch (PortStat) {
		case SK_HW_PS_RESTART:
			if (pPrt->PHWLinkUp) {
				/*
				 * Set Link to down.
				 */
				SkHWLinkDown(pAC, IoC, Port);

				/*
				 * Signal directly to RLMT to ensure correct
				 * sequence of SWITCH and RESET event.
				 */
				SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
			}

			/* Restart needed */
			SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_RESET, Para);
			break;

		case SK_HW_PS_LINK:
			/* Signal to RLMT */
			SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_UP, Para);
			break;

		}

		/* Start again the check Timer */
		if (pPrt->PHWLinkUp) {
			Time = SK_WA_ACT_TIME;
		}
		else {
			Time = SK_WA_INA_TIME;
		}

		/* Todo: still needed for non-XMAC PHYs??? */
		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, Time,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
		break;

	case SK_HWEV_PORT_START:
		if (pPrt->PHWLinkUp) {
			/*
			 * Signal directly to RLMT to ensure correct
			 * sequence of SWITCH and RESET event.
			 */
			SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
		}

		SkHWLinkDown(pAC, IoC, Port);

		/* Schedule Port RESET */
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_RESET, Para);

		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, SK_WA_INA_TIME,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
		break;

	case SK_HWEV_PORT_STOP:
		if (pPrt->PHWLinkUp) {
			/*
			 * Signal directly to RLMT to ensure correct
			 * sequence of SWITCH and RESET event.
			 */
			SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
		}

		/* Stop Workaround Timer */
		SkTimerStop(pAC, IoC, &pPrt->PWaTimer);

		SkHWLinkDown(pAC, IoC, Port);
		break;

	case SK_HWEV_UPDATE_STAT:
		/* We do NOT need to update any statistics */
		break;

	case SK_HWEV_CLEAR_STAT:
		/* We do NOT need to clear any statistics */
		for (Port = 0; Port < (SK_U32)pAC->GIni.GIMacsFound; Port++) {
			pPrt->PPrevRx = 0;
			pPrt->PPrevFcs = 0;
			pPrt->PPrevShorts = 0;
		}
		break;

	case SK_HWEV_SET_LMODE:
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PLinkModeConf != Val8) {
			/* Set New link mode */
			pPrt->PLinkModeConf = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_FLOWMODE:
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PFlowCtrlMode != Val8) {
			/* Set New Flow Control mode */
			pPrt->PFlowCtrlMode = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_ROLE:
		/* not possible for fiber */
		if (!pAC->GIni.GICopperType) {
			break;
		}
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PMSMode != Val8) {
			/* Set New link mode */
			pPrt->PMSMode = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_SPEED:
		if (pPrt->PhyType != SK_PHY_MARV_COPPER) {
			break;
		}
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PLinkSpeed != Val8) {
			/* Set New Speed parameter */
			pPrt->PLinkSpeed = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_HALFDUP_CHK:
		/*
		 * half duplex hangup workaround.
		 * See packet arbiter timeout interrupt for description
		 */
		pPrt->HalfDupTimerActive = SK_FALSE;
		if (pPrt->PLinkModeStatus == SK_LMODE_STAT_HALF ||
		    pPrt->PLinkModeStatus == SK_LMODE_STAT_AUTOHALF) {

			Len = sizeof(SK_U64);
			SkPnmiGetVar(pAC, IoC, OID_SKGE_STAT_TX_OCTETS, (char *)&Octets,
				&Len, (SK_U32)SK_PNMI_PORT_PHYS2INST(pAC, Port),
				pAC->Rlmt.Port[Port].Net->NetNumber);

			if (pPrt->LastOctets == Octets) {
				/* Tx hanging, a FIFO flush restarts it */
				SkMacFlushTxFifo(pAC, IoC, Port);
			}
		}
		break;

	default:
		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_SIRQ_E001, SKERR_SIRQ_E001MSG);
		break;
	}

	return(0);
}	/* SkGeSirqEvent */


/******************************************************************************
 *
 *	SkPhyIsrBcom() - PHY interrupt service routine
 *
 * Description: handles all interrupts from BCom PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrBcom(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
int			Port,		/* Port Num = PHY Num */
SK_U16		IStatus)	/* Interrupt Status */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_EVPARA	Para;

	pPrt = &pAC->GIni.GP[Port];

	if ((IStatus & PHY_B_IS_PSE) != 0) {
		/* Incorrectable pair swap error */
		SK_ERR_LOG(pAC, SK_ERRCL_SW | SK_ERRCL_INIT, SKERR_SIRQ_E022,
			SKERR_SIRQ_E022MSG);
	}

	if ((IStatus & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE)) != 0) {
		Para.Para32[0] = (SK_U32)Port;

		SkHWLinkDown(pAC, IoC, Port);

		/* Signal to RLMT */
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);

		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, SK_WA_INA_TIME,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
	}

}	/* SkPhyIsrBcom */


/******************************************************************************
 *
 *	SkPhyIsrGmac() - PHY interrupt service routine
 *
 * Description: handles all interrupts from Marvell PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrGmac(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
int			Port,		/* Port Num = PHY Num */
SK_U16		IStatus)	/* Interrupt Status */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_EVPARA	Para;

	pPrt = &pAC->GIni.GP[Port];

	if ((IStatus & (PHY_M_IS_AN_PR | PHY_M_IS_LST_CHANGE)) != 0) {
		Para.Para32[0] = (SK_U32)Port;

		SkHWLinkDown(pAC, IoC, Port);

		/* Signal to RLMT */
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

	if ((IStatus & PHY_M_IS_AN_ERROR) != 0) {
		/* Auto-Negotiation Error */
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E023, SKERR_SIRQ_E023MSG);
	}

	if ((IStatus & PHY_M_IS_LSP_CHANGE) != 0) {
		/* TBD */
	}

	if ((IStatus & PHY_M_IS_FIFO_ERROR) != 0) {
		/* FIFO Overflow/Underrun Error */
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E024, SKERR_SIRQ_E024MSG);
	}
}	/* SkPhyIsrGmac */


#ifdef OTHER_PHY
/******************************************************************************
 *
 *	SkPhyIsrLone() - PHY interrupt service routine
 *
 * Description: handles all interrupts from LONE PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrLone(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* Io Context */
int		Port,		/* Port Num = PHY Num */
SK_U16	IStatus)	/* Interrupt Status */
{
	SK_EVPARA	Para;

	if (IStatus & (PHY_L_IS_DUP | PHY_L_IS_ISOL)) {
		SkHWLinkDown(pAC, IoC, Port);

		/* Signal to RLMT */
		Para.Para32[0] = (SK_U32)Port;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

}	/* SkPhyIsrLone */
#endif /* OTHER_PHY */

#endif /* CONFIG_SK98 */

/* End of File */