summaryrefslogtreecommitdiffstats
path: root/drivers/net/usb/ax88179_178a.c
blob: 6d31061818e939bfd5401827540507acb8e18fb0 (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
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet Devices
 *
 * Copyright (C) 2011-2013 ASIX
 */

#include <linux/module.h>
#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/usb.h>
#include <linux/crc32.h>
#include <linux/usb/usbnet.h>
#include <uapi/linux/mdio.h>
#include <linux/mdio.h>

#define AX88179_PHY_ID				0x03
#define AX_EEPROM_LEN				0x100
#define AX88179_EEPROM_MAGIC			0x17900b95
#define AX_MCAST_FLTSIZE			8
#define AX_MAX_MCAST				64
#define AX_INT_PPLS_LINK			((u32)BIT(16))
#define AX_RXHDR_L4_TYPE_MASK			0x1c
#define AX_RXHDR_L4_TYPE_UDP			4
#define AX_RXHDR_L4_TYPE_TCP			16
#define AX_RXHDR_L3CSUM_ERR			2
#define AX_RXHDR_L4CSUM_ERR			1
#define AX_RXHDR_CRC_ERR			((u32)BIT(29))
#define AX_RXHDR_DROP_ERR			((u32)BIT(31))
#define AX_ACCESS_MAC				0x01
#define AX_ACCESS_PHY				0x02
#define AX_ACCESS_EEPROM			0x04
#define AX_ACCESS_EFUS				0x05
#define AX_RELOAD_EEPROM_EFUSE			0x06
#define AX_PAUSE_WATERLVL_HIGH			0x54
#define AX_PAUSE_WATERLVL_LOW			0x55

#define PHYSICAL_LINK_STATUS			0x02
	#define	AX_USB_SS		0x04
	#define	AX_USB_HS		0x02

#define GENERAL_STATUS				0x03
/* Check AX88179 version. UA1:Bit2 = 0,  UA2:Bit2 = 1 */
	#define	AX_SECLD		0x04

#define AX_SROM_ADDR				0x07
#define AX_SROM_CMD				0x0a
	#define EEP_RD			0x04
	#define EEP_BUSY		0x10

#define AX_SROM_DATA_LOW			0x08
#define AX_SROM_DATA_HIGH			0x09

#define AX_RX_CTL				0x0b
	#define AX_RX_CTL_DROPCRCERR	0x0100
	#define AX_RX_CTL_IPE		0x0200
	#define AX_RX_CTL_START		0x0080
	#define AX_RX_CTL_AP		0x0020
	#define AX_RX_CTL_AM		0x0010
	#define AX_RX_CTL_AB		0x0008
	#define AX_RX_CTL_AMALL		0x0002
	#define AX_RX_CTL_PRO		0x0001
	#define AX_RX_CTL_STOP		0x0000

#define AX_NODE_ID				0x10
#define AX_MULFLTARY				0x16

#define AX_MEDIUM_STATUS_MODE			0x22
	#define AX_MEDIUM_GIGAMODE	0x01
	#define AX_MEDIUM_FULL_DUPLEX	0x02
	#define AX_MEDIUM_EN_125MHZ	0x08
	#define AX_MEDIUM_RXFLOW_CTRLEN	0x10
	#define AX_MEDIUM_TXFLOW_CTRLEN	0x20
	#define AX_MEDIUM_RECEIVE_EN	0x100
	#define AX_MEDIUM_PS		0x200
	#define AX_MEDIUM_JUMBO_EN	0x8040

#define AX_MONITOR_MOD				0x24
	#define AX_MONITOR_MODE_RWLC	0x02
	#define AX_MONITOR_MODE_RWMP	0x04
	#define AX_MONITOR_MODE_PMEPOL	0x20
	#define AX_MONITOR_MODE_PMETYPE	0x40

#define AX_GPIO_CTRL				0x25
	#define AX_GPIO_CTRL_GPIO3EN	0x80
	#define AX_GPIO_CTRL_GPIO2EN	0x40
	#define AX_GPIO_CTRL_GPIO1EN	0x20

#define AX_PHYPWR_RSTCTL			0x26
	#define AX_PHYPWR_RSTCTL_BZ	0x0010
	#define AX_PHYPWR_RSTCTL_IPRL	0x0020
	#define AX_PHYPWR_RSTCTL_AT	0x1000

#define AX_RX_BULKIN_QCTRL			0x2e
#define AX_CLK_SELECT				0x33
	#define AX_CLK_SELECT_BCS	0x01
	#define AX_CLK_SELECT_ACS	0x02
	#define AX_CLK_SELECT_ULR	0x08

#define AX_RXCOE_CTL				0x34
	#define AX_RXCOE_IP		0x01
	#define AX_RXCOE_TCP		0x02
	#define AX_RXCOE_UDP		0x04
	#define AX_RXCOE_TCPV6		0x20
	#define AX_RXCOE_UDPV6		0x40

#define AX_TXCOE_CTL				0x35
	#define AX_TXCOE_IP		0x01
	#define AX_TXCOE_TCP		0x02
	#define AX_TXCOE_UDP		0x04
	#define AX_TXCOE_TCPV6		0x20
	#define AX_TXCOE_UDPV6		0x40

#define AX_LEDCTRL				0x73

#define GMII_PHY_PHYSR				0x11
	#define GMII_PHY_PHYSR_SMASK	0xc000
	#define GMII_PHY_PHYSR_GIGA	0x8000
	#define GMII_PHY_PHYSR_100	0x4000
	#define GMII_PHY_PHYSR_FULL	0x2000
	#define GMII_PHY_PHYSR_LINK	0x400

#define GMII_LED_ACT				0x1a
	#define	GMII_LED_ACTIVE_MASK	0xff8f
	#define	GMII_LED0_ACTIVE	BIT(4)
	#define	GMII_LED1_ACTIVE	BIT(5)
	#define	GMII_LED2_ACTIVE	BIT(6)

#define GMII_LED_LINK				0x1c
	#define	GMII_LED_LINK_MASK	0xf888
	#define	GMII_LED0_LINK_10	BIT(0)
	#define	GMII_LED0_LINK_100	BIT(1)
	#define	GMII_LED0_LINK_1000	BIT(2)
	#define	GMII_LED1_LINK_10	BIT(4)
	#define	GMII_LED1_LINK_100	BIT(5)
	#define	GMII_LED1_LINK_1000	BIT(6)
	#define	GMII_LED2_LINK_10	BIT(8)
	#define	GMII_LED2_LINK_100	BIT(9)
	#define	GMII_LED2_LINK_1000	BIT(10)
	#define	LED0_ACTIVE		BIT(0)
	#define	LED0_LINK_10		BIT(1)
	#define	LED0_LINK_100		BIT(2)
	#define	LED0_LINK_1000		BIT(3)
	#define	LED0_FD			BIT(4)
	#define	LED0_USB3_MASK		0x001f
	#define	LED1_ACTIVE		BIT(5)
	#define	LED1_LINK_10		BIT(6)
	#define	LED1_LINK_100		BIT(7)
	#define	LED1_LINK_1000		BIT(8)
	#define	LED1_FD			BIT(9)
	#define	LED1_USB3_MASK		0x03e0
	#define	LED2_ACTIVE		BIT(10)
	#define	LED2_LINK_1000		BIT(13)
	#define	LED2_LINK_100		BIT(12)
	#define	LED2_LINK_10		BIT(11)
	#define	LED2_FD			BIT(14)
	#define	LED_VALID		BIT(15)
	#define	LED2_USB3_MASK		0x7c00

#define GMII_PHYPAGE				0x1e
#define GMII_PHY_PAGE_SELECT			0x1f
	#define GMII_PHY_PGSEL_EXT	0x0007
	#define GMII_PHY_PGSEL_PAGE0	0x0000
	#define GMII_PHY_PGSEL_PAGE3	0x0003
	#define GMII_PHY_PGSEL_PAGE5	0x0005

static int ax88179_reset(struct usbnet *dev);

struct ax88179_data {
	u8  eee_enabled;
	u8  eee_active;
	u16 rxctl;
	u8 in_pm;
	u32 wol_supported;
	u32 wolopts;
	u8 disconnecting;
	u8 initialized;
};

struct ax88179_int_data {
	__le32 intdata1;
	__le32 intdata2;
};

static const struct {
	unsigned char ctrl, timer_l, timer_h, size, ifg;
} AX88179_BULKIN_SIZE[] =	{
	{7, 0x4f, 0,	0x12, 0xff},
	{7, 0x20, 3,	0x16, 0xff},
	{7, 0xae, 7,	0x18, 0xff},
	{7, 0xcc, 0x4c, 0x18, 8},
};

static void ax88179_set_pm_mode(struct usbnet *dev, bool pm_mode)
{
	struct ax88179_data *ax179_data = dev->driver_priv;

	ax179_data->in_pm = pm_mode;
}

static int ax88179_in_pm(struct usbnet *dev)
{
	struct ax88179_data *ax179_data = dev->driver_priv;

	return ax179_data->in_pm;
}

static int __ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
			      u16 size, void *data)
{
	int ret;
	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
	struct ax88179_data *ax179_data = dev->driver_priv;

	BUG_ON(!dev);

	if (!ax88179_in_pm(dev))
		fn = usbnet_read_cmd;
	else
		fn = usbnet_read_cmd_nopm;

	ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		 value, index, data, size);

	if (unlikely((ret < 0) && !(ret == -ENODEV && ax179_data->disconnecting)))
		netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
			    index, ret);

	return ret;
}

static int __ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
			       u16 size, const void *data)
{
	int ret;
	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
	struct ax88179_data *ax179_data = dev->driver_priv;

	BUG_ON(!dev);

	if (!ax88179_in_pm(dev))
		fn = usbnet_write_cmd;
	else
		fn = usbnet_write_cmd_nopm;

	ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
		 value, index, data, size);

	if (unlikely((ret < 0) && !(ret == -ENODEV && ax179_data->disconnecting)))
		netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
			    index, ret);

	return ret;
}

static void ax88179_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value,
				    u16 index, u16 size, void *data)
{
	u16 buf;

	if (2 == size) {
		buf = *((u16 *)data);
		cpu_to_le16s(&buf);
		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
				       USB_RECIP_DEVICE, value, index, &buf,
				       size);
	} else {
		usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR |
				       USB_RECIP_DEVICE, value, index, data,
				       size);
	}
}

static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
			    u16 size, void *data)
{
	int ret;

	if (2 == size) {
		u16 buf = 0;
		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf);
		le16_to_cpus(&buf);
		*((u16 *)data) = buf;
	} else if (4 == size) {
		u32 buf = 0;
		ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf);
		le32_to_cpus(&buf);
		*((u32 *)data) = buf;
	} else {
		ret = __ax88179_read_cmd(dev, cmd, value, index, size, data);
	}

	return ret;
}

static int ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
			     u16 size, const void *data)
{
	int ret;

	if (2 == size) {
		u16 buf;
		buf = *((u16 *)data);
		cpu_to_le16s(&buf);
		ret = __ax88179_write_cmd(dev, cmd, value, index,
					  size, &buf);
	} else {
		ret = __ax88179_write_cmd(dev, cmd, value, index,
					  size, data);
	}

	return ret;
}

static void ax88179_status(struct usbnet *dev, struct urb *urb)
{
	struct ax88179_int_data *event;
	u32 link;

	if (urb->actual_length < 8)
		return;

	event = urb->transfer_buffer;
	le32_to_cpus((void *)&event->intdata1);

	link = (((__force u32)event->intdata1) & AX_INT_PPLS_LINK) >> 16;

	if (netif_carrier_ok(dev->net) != link) {
		usbnet_link_change(dev, link, 1);
		netdev_info(dev->net, "ax88179 - Link status is: %d\n", link);
	}
}

static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc)
{
	struct usbnet *dev = netdev_priv(netdev);
	u16 res;

	ax88179_read_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
	return res;
}

static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc,
			       int val)
{
	struct usbnet *dev = netdev_priv(netdev);
	u16 res = (u16) val;

	ax88179_write_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res);
}

static inline int ax88179_phy_mmd_indirect(struct usbnet *dev, u16 prtad,
					   u16 devad)
{
	u16 tmp16;
	int ret;

	tmp16 = devad;
	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
				MII_MMD_CTRL, 2, &tmp16);

	tmp16 = prtad;
	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
				MII_MMD_DATA, 2, &tmp16);

	tmp16 = devad | MII_MMD_CTRL_NOINCR;
	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
				MII_MMD_CTRL, 2, &tmp16);

	return ret;
}

static int
ax88179_phy_read_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad)
{
	int ret;
	u16 tmp16;

	ax88179_phy_mmd_indirect(dev, prtad, devad);

	ret = ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			       MII_MMD_DATA, 2, &tmp16);
	if (ret < 0)
		return ret;

	return tmp16;
}

static int
ax88179_phy_write_mmd_indirect(struct usbnet *dev, u16 prtad, u16 devad,
			       u16 data)
{
	int ret;

	ax88179_phy_mmd_indirect(dev, prtad, devad);

	ret = ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
				MII_MMD_DATA, 2, &data);

	if (ret < 0)
		return ret;

	return 0;
}

static int ax88179_suspend(struct usb_interface *intf, pm_message_t message)
{
	struct usbnet *dev = usb_get_intfdata(intf);
	struct ax88179_data *priv = dev->driver_priv;
	u16 tmp16;
	u8 tmp8;

	ax88179_set_pm_mode(dev, true);

	usbnet_suspend(intf, message);

	/* Enable WoL */
	if (priv->wolopts) {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
				 1, 1, &tmp8);
		if (priv->wolopts & WAKE_PHY)
			tmp8 |= AX_MONITOR_MODE_RWLC;
		if (priv->wolopts & WAKE_MAGIC)
			tmp8 |= AX_MONITOR_MODE_RWMP;

		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
				  1, 1, &tmp8);
	}

	/* Disable RX path */
	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			 2, 2, &tmp16);
	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			  2, 2, &tmp16);

	/* Force bulk-in zero length */
	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
			 2, 2, &tmp16);

	tmp16 |= AX_PHYPWR_RSTCTL_BZ | AX_PHYPWR_RSTCTL_IPRL;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
			  2, 2, &tmp16);

	/* change clock */
	tmp8 = 0;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);

	/* Configure RX control register => stop operation */
	tmp16 = AX_RX_CTL_STOP;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);

	ax88179_set_pm_mode(dev, false);

	return 0;
}

/* This function is used to enable the autodetach function. */
/* This function is determined by offset 0x43 of EEPROM */
static int ax88179_auto_detach(struct usbnet *dev)
{
	u16 tmp16;
	u8 tmp8;

	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x43, 1, 2, &tmp16) < 0)
		return 0;

	if ((tmp16 == 0xFFFF) || (!(tmp16 & 0x0100)))
		return 0;

	/* Enable Auto Detach bit */
	tmp8 = 0;
	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
	tmp8 |= AX_CLK_SELECT_ULR;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);

	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
	tmp16 |= AX_PHYPWR_RSTCTL_AT;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);

	return 0;
}

static int ax88179_resume(struct usb_interface *intf)
{
	struct usbnet *dev = usb_get_intfdata(intf);

	ax88179_set_pm_mode(dev, true);

	usbnet_link_change(dev, 0, 0);

	ax88179_reset(dev);

	ax88179_set_pm_mode(dev, false);

	return usbnet_resume(intf);
}

static void ax88179_disconnect(struct usb_interface *intf)
{
	struct usbnet *dev = usb_get_intfdata(intf);
	struct ax88179_data *ax179_data;

	if (!dev)
		return;

	ax179_data = dev->driver_priv;
	ax179_data->disconnecting = 1;

	usbnet_disconnect(intf);
}

static void
ax88179_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
	struct usbnet *dev = netdev_priv(net);
	struct ax88179_data *priv = dev->driver_priv;

	wolinfo->supported = priv->wol_supported;
	wolinfo->wolopts = priv->wolopts;
}

static int
ax88179_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
{
	struct usbnet *dev = netdev_priv(net);
	struct ax88179_data *priv = dev->driver_priv;

	if (wolinfo->wolopts & ~(priv->wol_supported))
		return -EINVAL;

	priv->wolopts = wolinfo->wolopts;

	return 0;
}

static int ax88179_get_eeprom_len(struct net_device *net)
{
	return AX_EEPROM_LEN;
}

static int
ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
		   u8 *data)
{
	struct usbnet *dev = netdev_priv(net);
	u16 *eeprom_buff;
	int first_word, last_word;
	int i, ret;

	if (eeprom->len == 0)
		return -EINVAL;

	eeprom->magic = AX88179_EEPROM_MAGIC;

	first_word = eeprom->offset >> 1;
	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
				    GFP_KERNEL);
	if (!eeprom_buff)
		return -ENOMEM;

	/* ax88179/178A returns 2 bytes from eeprom on read */
	for (i = first_word; i <= last_word; i++) {
		ret = __ax88179_read_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
					 &eeprom_buff[i - first_word]);
		if (ret < 0) {
			kfree(eeprom_buff);
			return -EIO;
		}
	}

	memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
	kfree(eeprom_buff);
	return 0;
}

static int
ax88179_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
		   u8 *data)
{
	struct usbnet *dev = netdev_priv(net);
	u16 *eeprom_buff;
	int first_word;
	int last_word;
	int ret;
	int i;

	netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
		   eeprom->len, eeprom->offset, eeprom->magic);

	if (eeprom->len == 0)
		return -EINVAL;

	if (eeprom->magic != AX88179_EEPROM_MAGIC)
		return -EINVAL;

	first_word = eeprom->offset >> 1;
	last_word = (eeprom->offset + eeprom->len - 1) >> 1;

	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
				    GFP_KERNEL);
	if (!eeprom_buff)
		return -ENOMEM;

	/* align data to 16 bit boundaries, read the missing data from
	   the EEPROM */
	if (eeprom->offset & 1) {
		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, first_word, 1, 2,
				       &eeprom_buff[0]);
		if (ret < 0) {
			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
			goto free;
		}
	}

	if ((eeprom->offset + eeprom->len) & 1) {
		ret = ax88179_read_cmd(dev, AX_ACCESS_EEPROM, last_word, 1, 2,
				       &eeprom_buff[last_word - first_word]);
		if (ret < 0) {
			netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
			goto free;
		}
	}

	memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);

	for (i = first_word; i <= last_word; i++) {
		netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
			   i, eeprom_buff[i - first_word]);
		ret = ax88179_write_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2,
					&eeprom_buff[i - first_word]);
		if (ret < 0) {
			netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n", i);
			goto free;
		}
		msleep(20);
	}

	/* reload EEPROM data */
	ret = ax88179_write_cmd(dev, AX_RELOAD_EEPROM_EFUSE, 0x0000, 0, 0, NULL);
	if (ret < 0) {
		netdev_err(net, "Failed to reload EEPROM data\n");
		goto free;
	}

	ret = 0;
free:
	kfree(eeprom_buff);
	return ret;
}

static int ax88179_get_link_ksettings(struct net_device *net,
				      struct ethtool_link_ksettings *cmd)
{
	struct usbnet *dev = netdev_priv(net);

	mii_ethtool_get_link_ksettings(&dev->mii, cmd);

	return 0;
}

static int ax88179_set_link_ksettings(struct net_device *net,
				      const struct ethtool_link_ksettings *cmd)
{
	struct usbnet *dev = netdev_priv(net);
	return mii_ethtool_set_link_ksettings(&dev->mii, cmd);
}

static int
ax88179_ethtool_get_eee(struct usbnet *dev, struct ethtool_eee *data)
{
	int val;

	/* Get Supported EEE */
	val = ax88179_phy_read_mmd_indirect(dev, MDIO_PCS_EEE_ABLE,
					    MDIO_MMD_PCS);
	if (val < 0)
		return val;
	data->supported = mmd_eee_cap_to_ethtool_sup_t(val);

	/* Get advertisement EEE */
	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_ADV,
					    MDIO_MMD_AN);
	if (val < 0)
		return val;
	data->advertised = mmd_eee_adv_to_ethtool_adv_t(val);

	/* Get LP advertisement EEE */
	val = ax88179_phy_read_mmd_indirect(dev, MDIO_AN_EEE_LPABLE,
					    MDIO_MMD_AN);
	if (val < 0)
		return val;
	data->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(val);

	return 0;
}

static int
ax88179_ethtool_set_eee(struct usbnet *dev, struct ethtool_eee *data)
{
	u16 tmp16 = ethtool_adv_to_mmd_eee_adv_t(data->advertised);

	return ax88179_phy_write_mmd_indirect(dev, MDIO_AN_EEE_ADV,
					      MDIO_MMD_AN, tmp16);
}

static int ax88179_chk_eee(struct usbnet *dev)
{
	struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
	struct ax88179_data *priv = dev->driver_priv;

	mii_ethtool_gset(&dev->mii, &ecmd);

	if (ecmd.duplex & DUPLEX_FULL) {
		int eee_lp, eee_cap, eee_adv;
		u32 lp, cap, adv, supported = 0;

		eee_cap = ax88179_phy_read_mmd_indirect(dev,
							MDIO_PCS_EEE_ABLE,
							MDIO_MMD_PCS);
		if (eee_cap < 0) {
			priv->eee_active = 0;
			return false;
		}

		cap = mmd_eee_cap_to_ethtool_sup_t(eee_cap);
		if (!cap) {
			priv->eee_active = 0;
			return false;
		}

		eee_lp = ax88179_phy_read_mmd_indirect(dev,
						       MDIO_AN_EEE_LPABLE,
						       MDIO_MMD_AN);
		if (eee_lp < 0) {
			priv->eee_active = 0;
			return false;
		}

		eee_adv = ax88179_phy_read_mmd_indirect(dev,
							MDIO_AN_EEE_ADV,
							MDIO_MMD_AN);

		if (eee_adv < 0) {
			priv->eee_active = 0;
			return false;
		}

		adv = mmd_eee_adv_to_ethtool_adv_t(eee_adv);
		lp = mmd_eee_adv_to_ethtool_adv_t(eee_lp);
		supported = (ecmd.speed == SPEED_1000) ?
			     SUPPORTED_1000baseT_Full :
			     SUPPORTED_100baseT_Full;

		if (!(lp & adv & supported)) {
			priv->eee_active = 0;
			return false;
		}

		priv->eee_active = 1;
		return true;
	}

	priv->eee_active = 0;
	return false;
}

static void ax88179_disable_eee(struct usbnet *dev)
{
	u16 tmp16;

	tmp16 = GMII_PHY_PGSEL_PAGE3;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp16);

	tmp16 = 0x3246;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  MII_PHYADDR, 2, &tmp16);

	tmp16 = GMII_PHY_PGSEL_PAGE0;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
}

static void ax88179_enable_eee(struct usbnet *dev)
{
	u16 tmp16;

	tmp16 = GMII_PHY_PGSEL_PAGE3;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp16);

	tmp16 = 0x3247;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  MII_PHYADDR, 2, &tmp16);

	tmp16 = GMII_PHY_PGSEL_PAGE5;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp16);

	tmp16 = 0x0680;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  MII_BMSR, 2, &tmp16);

	tmp16 = GMII_PHY_PGSEL_PAGE0;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp16);
}

static int ax88179_get_eee(struct net_device *net, struct ethtool_eee *edata)
{
	struct usbnet *dev = netdev_priv(net);
	struct ax88179_data *priv = dev->driver_priv;

	edata->eee_enabled = priv->eee_enabled;
	edata->eee_active = priv->eee_active;

	return ax88179_ethtool_get_eee(dev, edata);
}

static int ax88179_set_eee(struct net_device *net, struct ethtool_eee *edata)
{
	struct usbnet *dev = netdev_priv(net);
	struct ax88179_data *priv = dev->driver_priv;
	int ret;

	priv->eee_enabled = edata->eee_enabled;
	if (!priv->eee_enabled) {
		ax88179_disable_eee(dev);
	} else {
		priv->eee_enabled = ax88179_chk_eee(dev);
		if (!priv->eee_enabled)
			return -EOPNOTSUPP;

		ax88179_enable_eee(dev);
	}

	ret = ax88179_ethtool_set_eee(dev, edata);
	if (ret)
		return ret;

	mii_nway_restart(&dev->mii);

	usbnet_link_change(dev, 0, 0);

	return ret;
}

static int ax88179_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
{
	struct usbnet *dev = netdev_priv(net);
	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
}

static const struct ethtool_ops ax88179_ethtool_ops = {
	.get_link		= ethtool_op_get_link,
	.get_msglevel		= usbnet_get_msglevel,
	.set_msglevel		= usbnet_set_msglevel,
	.get_wol		= ax88179_get_wol,
	.set_wol		= ax88179_set_wol,
	.get_eeprom_len		= ax88179_get_eeprom_len,
	.get_eeprom		= ax88179_get_eeprom,
	.set_eeprom		= ax88179_set_eeprom,
	.get_eee		= ax88179_get_eee,
	.set_eee		= ax88179_set_eee,
	.nway_reset		= usbnet_nway_reset,
	.get_link_ksettings	= ax88179_get_link_ksettings,
	.set_link_ksettings	= ax88179_set_link_ksettings,
	.get_ts_info		= ethtool_op_get_ts_info,
};

static void ax88179_set_multicast(struct net_device *net)
{
	struct usbnet *dev = netdev_priv(net);
	struct ax88179_data *data = dev->driver_priv;
	u8 *m_filter = ((u8 *)dev->data);

	data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE);

	if (net->flags & IFF_PROMISC) {
		data->rxctl |= AX_RX_CTL_PRO;
	} else if (net->flags & IFF_ALLMULTI ||
		   netdev_mc_count(net) > AX_MAX_MCAST) {
		data->rxctl |= AX_RX_CTL_AMALL;
	} else if (netdev_mc_empty(net)) {
		/* just broadcast and directed */
	} else {
		/* We use dev->data for our 8 byte filter buffer
		 * to avoid allocating memory that is tricky to free later
		 */
		u32 crc_bits;
		struct netdev_hw_addr *ha;

		memset(m_filter, 0, AX_MCAST_FLTSIZE);

		netdev_for_each_mc_addr(ha, net) {
			crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
			*(m_filter + (crc_bits >> 3)) |= (1 << (crc_bits & 7));
		}

		ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_MULFLTARY,
					AX_MCAST_FLTSIZE, AX_MCAST_FLTSIZE,
					m_filter);

		data->rxctl |= AX_RX_CTL_AM;
	}

	ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_RX_CTL,
				2, 2, &data->rxctl);
}

static int
ax88179_set_features(struct net_device *net, netdev_features_t features)
{
	u8 tmp;
	struct usbnet *dev = netdev_priv(net);
	netdev_features_t changed = net->features ^ features;

	if (changed & NETIF_F_IP_CSUM) {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
		tmp ^= AX_TXCOE_TCP | AX_TXCOE_UDP;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
	}

	if (changed & NETIF_F_IPV6_CSUM) {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
		tmp ^= AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp);
	}

	if (changed & NETIF_F_RXCSUM) {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
		tmp ^= AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
		       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp);
	}

	return 0;
}

static int ax88179_change_mtu(struct net_device *net, int new_mtu)
{
	struct usbnet *dev = netdev_priv(net);
	u16 tmp16;

	net->mtu = new_mtu;
	dev->hard_mtu = net->mtu + net->hard_header_len;

	if (net->mtu > 1500) {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
				 2, 2, &tmp16);
		tmp16 |= AX_MEDIUM_JUMBO_EN;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
				  2, 2, &tmp16);
	} else {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
				 2, 2, &tmp16);
		tmp16 &= ~AX_MEDIUM_JUMBO_EN;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
				  2, 2, &tmp16);
	}

	/* max qlen depend on hard_mtu and rx_urb_size */
	usbnet_update_max_qlen(dev);

	return 0;
}

static int ax88179_set_mac_addr(struct net_device *net, void *p)
{
	struct usbnet *dev = netdev_priv(net);
	struct sockaddr *addr = p;
	int ret;

	if (netif_running(net))
		return -EBUSY;
	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	eth_hw_addr_set(net, addr->sa_data);

	/* Set the MAC address */
	ret = ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
				 ETH_ALEN, net->dev_addr);
	if (ret < 0)
		return ret;

	return 0;
}

static const struct net_device_ops ax88179_netdev_ops = {
	.ndo_open		= usbnet_open,
	.ndo_stop		= usbnet_stop,
	.ndo_start_xmit		= usbnet_start_xmit,
	.ndo_tx_timeout		= usbnet_tx_timeout,
	.ndo_get_stats64	= dev_get_tstats64,
	.ndo_change_mtu		= ax88179_change_mtu,
	.ndo_set_mac_address	= ax88179_set_mac_addr,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_eth_ioctl		= ax88179_ioctl,
	.ndo_set_rx_mode	= ax88179_set_multicast,
	.ndo_set_features	= ax88179_set_features,
};

static int ax88179_check_eeprom(struct usbnet *dev)
{
	u8 i, buf, eeprom[20];
	u16 csum, delay = HZ / 10;
	unsigned long jtimeout;

	/* Read EEPROM content */
	for (i = 0; i < 6; i++) {
		buf = i;
		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
				      1, 1, &buf) < 0)
			return -EINVAL;

		buf = EEP_RD;
		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
				      1, 1, &buf) < 0)
			return -EINVAL;

		jtimeout = jiffies + delay;
		do {
			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
					 1, 1, &buf);

			if (time_after(jiffies, jtimeout))
				return -EINVAL;

		} while (buf & EEP_BUSY);

		__ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
				   2, 2, &eeprom[i * 2]);

		if ((i == 0) && (eeprom[0] == 0xFF))
			return -EINVAL;
	}

	csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9];
	csum = (csum >> 8) + (csum & 0xff);
	if ((csum + eeprom[10]) != 0xff)
		return -EINVAL;

	return 0;
}

static int ax88179_check_efuse(struct usbnet *dev, u16 *ledmode)
{
	u8	i;
	u8	efuse[64];
	u16	csum = 0;

	if (ax88179_read_cmd(dev, AX_ACCESS_EFUS, 0, 64, 64, efuse) < 0)
		return -EINVAL;

	if (*efuse == 0xFF)
		return -EINVAL;

	for (i = 0; i < 64; i++)
		csum = csum + efuse[i];

	while (csum > 255)
		csum = (csum & 0x00FF) + ((csum >> 8) & 0x00FF);

	if (csum != 0xFF)
		return -EINVAL;

	*ledmode = (efuse[51] << 8) | efuse[52];

	return 0;
}

static int ax88179_convert_old_led(struct usbnet *dev, u16 *ledvalue)
{
	u16 led;

	/* Loaded the old eFuse LED Mode */
	if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x3C, 1, 2, &led) < 0)
		return -EINVAL;

	led >>= 8;
	switch (led) {
	case 0xFF:
		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
		break;
	case 0xFE:
		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | LED_VALID;
		break;
	case 0xFD:
		led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 |
		      LED2_LINK_10 | LED_VALID;
		break;
	case 0xFC:
		led = LED0_ACTIVE | LED1_ACTIVE | LED1_LINK_1000 | LED2_ACTIVE |
		      LED2_LINK_100 | LED2_LINK_10 | LED_VALID;
		break;
	default:
		led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 |
		      LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 |
		      LED2_LINK_100 | LED2_LINK_1000 | LED_VALID;
		break;
	}

	*ledvalue = led;

	return 0;
}

static int ax88179_led_setting(struct usbnet *dev)
{
	u8 ledfd, value = 0;
	u16 tmp, ledact, ledlink, ledvalue = 0, delay = HZ / 10;
	unsigned long jtimeout;

	/* Check AX88179 version. UA1 or UA2*/
	ax88179_read_cmd(dev, AX_ACCESS_MAC, GENERAL_STATUS, 1, 1, &value);

	if (!(value & AX_SECLD)) {	/* UA1 */
		value = AX_GPIO_CTRL_GPIO3EN | AX_GPIO_CTRL_GPIO2EN |
			AX_GPIO_CTRL_GPIO1EN;
		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_GPIO_CTRL,
				      1, 1, &value) < 0)
			return -EINVAL;
	}

	/* Check EEPROM */
	if (!ax88179_check_eeprom(dev)) {
		value = 0x42;
		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR,
				      1, 1, &value) < 0)
			return -EINVAL;

		value = EEP_RD;
		if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
				      1, 1, &value) < 0)
			return -EINVAL;

		jtimeout = jiffies + delay;
		do {
			ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD,
					 1, 1, &value);

			if (time_after(jiffies, jtimeout))
				return -EINVAL;

		} while (value & EEP_BUSY);

		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_HIGH,
				 1, 1, &value);
		ledvalue = (value << 8);

		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW,
				 1, 1, &value);
		ledvalue |= value;

		/* load internal ROM for defaule setting */
		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
			ax88179_convert_old_led(dev, &ledvalue);

	} else if (!ax88179_check_efuse(dev, &ledvalue)) {
		if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0))
			ax88179_convert_old_led(dev, &ledvalue);
	} else {
		ax88179_convert_old_led(dev, &ledvalue);
	}

	tmp = GMII_PHY_PGSEL_EXT;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp);

	tmp = 0x2c;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHYPAGE, 2, &tmp);

	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			 GMII_LED_ACT, 2, &ledact);

	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			 GMII_LED_LINK, 2, &ledlink);

	ledact &= GMII_LED_ACTIVE_MASK;
	ledlink &= GMII_LED_LINK_MASK;

	if (ledvalue & LED0_ACTIVE)
		ledact |= GMII_LED0_ACTIVE;

	if (ledvalue & LED1_ACTIVE)
		ledact |= GMII_LED1_ACTIVE;

	if (ledvalue & LED2_ACTIVE)
		ledact |= GMII_LED2_ACTIVE;

	if (ledvalue & LED0_LINK_10)
		ledlink |= GMII_LED0_LINK_10;

	if (ledvalue & LED1_LINK_10)
		ledlink |= GMII_LED1_LINK_10;

	if (ledvalue & LED2_LINK_10)
		ledlink |= GMII_LED2_LINK_10;

	if (ledvalue & LED0_LINK_100)
		ledlink |= GMII_LED0_LINK_100;

	if (ledvalue & LED1_LINK_100)
		ledlink |= GMII_LED1_LINK_100;

	if (ledvalue & LED2_LINK_100)
		ledlink |= GMII_LED2_LINK_100;

	if (ledvalue & LED0_LINK_1000)
		ledlink |= GMII_LED0_LINK_1000;

	if (ledvalue & LED1_LINK_1000)
		ledlink |= GMII_LED1_LINK_1000;

	if (ledvalue & LED2_LINK_1000)
		ledlink |= GMII_LED2_LINK_1000;

	tmp = ledact;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_LED_ACT, 2, &tmp);

	tmp = ledlink;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_LED_LINK, 2, &tmp);

	tmp = GMII_PHY_PGSEL_PAGE0;
	ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			  GMII_PHY_PAGE_SELECT, 2, &tmp);

	/* LED full duplex setting */
	ledfd = 0;
	if (ledvalue & LED0_FD)
		ledfd |= 0x01;
	else if ((ledvalue & LED0_USB3_MASK) == 0)
		ledfd |= 0x02;

	if (ledvalue & LED1_FD)
		ledfd |= 0x04;
	else if ((ledvalue & LED1_USB3_MASK) == 0)
		ledfd |= 0x08;

	if (ledvalue & LED2_FD)
		ledfd |= 0x10;
	else if ((ledvalue & LED2_USB3_MASK) == 0)
		ledfd |= 0x20;

	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_LEDCTRL, 1, 1, &ledfd);

	return 0;
}

static void ax88179_get_mac_addr(struct usbnet *dev)
{
	u8 mac[ETH_ALEN];

	memset(mac, 0, sizeof(mac));

	/* Maybe the boot loader passed the MAC address via device tree */
	if (!eth_platform_get_mac_address(&dev->udev->dev, mac)) {
		netif_dbg(dev, ifup, dev->net,
			  "MAC address read from device tree");
	} else {
		ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
				 ETH_ALEN, mac);
		netif_dbg(dev, ifup, dev->net,
			  "MAC address read from ASIX chip");
	}

	if (is_valid_ether_addr(mac)) {
		eth_hw_addr_set(dev->net, mac);
		if (!is_local_ether_addr(mac))
			dev->net->addr_assign_type = NET_ADDR_PERM;
	} else {
		netdev_info(dev->net, "invalid MAC address, using random\n");
		eth_hw_addr_random(dev->net);
	}

	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN,
			  dev->net->dev_addr);
}

static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
{
	struct ax88179_data *ax179_data;

	usbnet_get_endpoints(dev, intf);

	ax179_data = kzalloc(sizeof(*ax179_data), GFP_KERNEL);
	if (!ax179_data)
		return -ENOMEM;

	dev->driver_priv = ax179_data;

	dev->net->netdev_ops = &ax88179_netdev_ops;
	dev->net->ethtool_ops = &ax88179_ethtool_ops;
	dev->net->needed_headroom = 8;
	dev->net->max_mtu = 4088;

	/* Initialize MII structure */
	dev->mii.dev = dev->net;
	dev->mii.mdio_read = ax88179_mdio_read;
	dev->mii.mdio_write = ax88179_mdio_write;
	dev->mii.phy_id_mask = 0xff;
	dev->mii.reg_num_mask = 0xff;
	dev->mii.phy_id = 0x03;
	dev->mii.supports_gmii = 1;

	dev->net->features |= NETIF_F_SG | NETIF_F_IP_CSUM |
			      NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_TSO;

	dev->net->hw_features |= dev->net->features;

	netif_set_tso_max_size(dev->net, 16384);

	ax88179_reset(dev);

	return 0;
}

static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
{
	struct ax88179_data *ax179_data = dev->driver_priv;
	u16 tmp16;

	/* Configure RX control register => stop operation */
	tmp16 = AX_RX_CTL_STOP;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);

	tmp16 = 0;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16);

	/* Power down ethernet PHY */
	tmp16 = 0;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);

	kfree(ax179_data);
}

static void
ax88179_rx_checksum(struct sk_buff *skb, u32 *pkt_hdr)
{
	skb->ip_summed = CHECKSUM_NONE;

	/* checksum error bit is set */
	if ((*pkt_hdr & AX_RXHDR_L3CSUM_ERR) ||
	    (*pkt_hdr & AX_RXHDR_L4CSUM_ERR))
		return;

	/* It must be a TCP or UDP packet with a valid checksum */
	if (((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_TCP) ||
	    ((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_UDP))
		skb->ip_summed = CHECKSUM_UNNECESSARY;
}

static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
	struct sk_buff *ax_skb;
	int pkt_cnt;
	u32 rx_hdr;
	u16 hdr_off;
	u32 *pkt_hdr;

	/* At the end of the SKB, there's a header telling us how many packets
	 * are bundled into this buffer and where we can find an array of
	 * per-packet metadata (which contains elements encoded into u16).
	 */

	/* SKB contents for current firmware:
	 *   <packet 1> <padding>
	 *   ...
	 *   <packet N> <padding>
	 *   <per-packet metadata entry 1> <dummy header>
	 *   ...
	 *   <per-packet metadata entry N> <dummy header>
	 *   <padding2> <rx_hdr>
	 *
	 * where:
	 *   <packet N> contains pkt_len bytes:
	 *		2 bytes of IP alignment pseudo header
	 *		packet received
	 *   <per-packet metadata entry N> contains 4 bytes:
	 *		pkt_len and fields AX_RXHDR_*
	 *   <padding>	0-7 bytes to terminate at
	 *		8 bytes boundary (64-bit).
	 *   <padding2> 4 bytes to make rx_hdr terminate at
	 *		8 bytes boundary (64-bit)
	 *   <dummy-header> contains 4 bytes:
	 *		pkt_len=0 and AX_RXHDR_DROP_ERR
	 *   <rx-hdr>	contains 4 bytes:
	 *		pkt_cnt and hdr_off (offset of
	 *		  <per-packet metadata entry 1>)
	 *
	 * pkt_cnt is number of entrys in the per-packet metadata.
	 * In current firmware there is 2 entrys per packet.
	 * The first points to the packet and the
	 *  second is a dummy header.
	 * This was done probably to align fields in 64-bit and
	 *  maintain compatibility with old firmware.
	 * This code assumes that <dummy header> and <padding2> are
	 *  optional.
	 */

	if (skb->len < 4)
		return 0;
	skb_trim(skb, skb->len - 4);
	rx_hdr = get_unaligned_le32(skb_tail_pointer(skb));
	pkt_cnt = (u16)rx_hdr;
	hdr_off = (u16)(rx_hdr >> 16);

	if (pkt_cnt == 0)
		return 0;

	/* Make sure that the bounds of the metadata array are inside the SKB
	 * (and in front of the counter at the end).
	 */
	if (pkt_cnt * 4 + hdr_off > skb->len)
		return 0;
	pkt_hdr = (u32 *)(skb->data + hdr_off);

	/* Packets must not overlap the metadata array */
	skb_trim(skb, hdr_off);

	for (; pkt_cnt > 0; pkt_cnt--, pkt_hdr++) {
		u16 pkt_len_plus_padd;
		u16 pkt_len;

		le32_to_cpus(pkt_hdr);
		pkt_len = (*pkt_hdr >> 16) & 0x1fff;
		pkt_len_plus_padd = (pkt_len + 7) & 0xfff8;

		/* Skip dummy header used for alignment
		 */
		if (pkt_len == 0)
			continue;

		if (pkt_len_plus_padd > skb->len)
			return 0;

		/* Check CRC or runt packet */
		if ((*pkt_hdr & (AX_RXHDR_CRC_ERR | AX_RXHDR_DROP_ERR)) ||
		    pkt_len < 2 + ETH_HLEN) {
			dev->net->stats.rx_errors++;
			skb_pull(skb, pkt_len_plus_padd);
			continue;
		}

		/* last packet */
		if (pkt_len_plus_padd == skb->len) {
			skb_trim(skb, pkt_len);

			/* Skip IP alignment pseudo header */
			skb_pull(skb, 2);

			ax88179_rx_checksum(skb, pkt_hdr);
			return 1;
		}

		ax_skb = netdev_alloc_skb_ip_align(dev->net, pkt_len);
		if (!ax_skb)
			return 0;
		skb_put(ax_skb, pkt_len);
		memcpy(ax_skb->data, skb->data + 2, pkt_len);

		ax88179_rx_checksum(ax_skb, pkt_hdr);
		usbnet_skb_return(dev, ax_skb);

		skb_pull(skb, pkt_len_plus_padd);
	}

	return 0;
}

static struct sk_buff *
ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
{
	u32 tx_hdr1, tx_hdr2;
	int frame_size = dev->maxpacket;
	int headroom;
	void *ptr;

	tx_hdr1 = skb->len;
	tx_hdr2 = skb_shinfo(skb)->gso_size; /* Set TSO mss */
	if (((skb->len + 8) % frame_size) == 0)
		tx_hdr2 |= 0x80008000;	/* Enable padding */

	headroom = skb_headroom(skb) - 8;

	if ((dev->net->features & NETIF_F_SG) && skb_linearize(skb))
		return NULL;

	if ((skb_header_cloned(skb) || headroom < 0) &&
	    pskb_expand_head(skb, headroom < 0 ? 8 : 0, 0, GFP_ATOMIC)) {
		dev_kfree_skb_any(skb);
		return NULL;
	}

	ptr = skb_push(skb, 8);
	put_unaligned_le32(tx_hdr1, ptr);
	put_unaligned_le32(tx_hdr2, ptr + 4);

	usbnet_set_skb_tx_stats(skb, (skb_shinfo(skb)->gso_segs ?: 1), 0);

	return skb;
}

static int ax88179_link_reset(struct usbnet *dev)
{
	struct ax88179_data *ax179_data = dev->driver_priv;
	u8 tmp[5], link_sts;
	u16 mode, tmp16, delay = HZ / 10;
	u32 tmp32 = 0x40000000;
	unsigned long jtimeout;

	jtimeout = jiffies + delay;
	while (tmp32 & 0x40000000) {
		mode = 0;
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode);
		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2,
				  &ax179_data->rxctl);

		/*link up, check the usb device control TX FIFO full or empty*/
		ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32);

		if (time_after(jiffies, jtimeout))
			return 0;
	}

	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
	       AX_MEDIUM_RXFLOW_CTRLEN;

	ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
			 1, 1, &link_sts);

	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
			 GMII_PHY_PHYSR, 2, &tmp16);

	if (!(tmp16 & GMII_PHY_PHYSR_LINK)) {
		return 0;
	} else if (GMII_PHY_PHYSR_GIGA == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ;
		if (dev->net->mtu > 1500)
			mode |= AX_MEDIUM_JUMBO_EN;

		if (link_sts & AX_USB_SS)
			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
		else if (link_sts & AX_USB_HS)
			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
		else
			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	} else if (GMII_PHY_PHYSR_100 == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
		mode |= AX_MEDIUM_PS;

		if (link_sts & (AX_USB_SS | AX_USB_HS))
			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
		else
			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	} else {
		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
	}

	/* RX bulk configuration */
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);

	dev->rx_urb_size = (1024 * (tmp[3] + 2));

	if (tmp16 & GMII_PHY_PHYSR_FULL)
		mode |= AX_MEDIUM_FULL_DUPLEX;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			  2, 2, &mode);

	ax179_data->eee_enabled = ax88179_chk_eee(dev);

	netif_carrier_on(dev->net);

	return 0;
}

static int ax88179_reset(struct usbnet *dev)
{
	u8 buf[5];
	u16 *tmp16;
	u8 *tmp;
	struct ax88179_data *ax179_data = dev->driver_priv;
	struct ethtool_eee eee_data;

	tmp16 = (u16 *)buf;
	tmp = (u8 *)buf;

	/* Power up ethernet PHY */
	*tmp16 = 0;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);

	*tmp16 = AX_PHYPWR_RSTCTL_IPRL;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16);
	msleep(500);

	*tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
	msleep(200);

	/* Ethernet PHY Auto Detach*/
	ax88179_auto_detach(dev);

	/* Read MAC address from DTB or asix chip */
	ax88179_get_mac_addr(dev);
	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);

	/* RX bulk configuration */
	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);

	dev->rx_urb_size = 1024 * 20;

	*tmp = 0x34;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp);

	*tmp = 0x52;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
			  1, 1, tmp);

	/* Enable checksum offload */
	*tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP |
	       AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp);

	*tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP |
	       AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp);

	/* Configure RX control register => start operation */
	*tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
		 AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16);

	*tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL |
	       AX_MONITOR_MODE_RWMP;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp);

	/* Configure default medium type => giga */
	*tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
		 AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_FULL_DUPLEX |
		 AX_MEDIUM_GIGAMODE;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			  2, 2, tmp16);

	/* Check if WoL is supported */
	ax179_data->wol_supported = 0;
	if (ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD,
			     1, 1, &tmp) > 0)
		ax179_data->wol_supported = WAKE_MAGIC | WAKE_PHY;

	ax88179_led_setting(dev);

	ax179_data->eee_enabled = 0;
	ax179_data->eee_active = 0;

	ax88179_disable_eee(dev);

	ax88179_ethtool_get_eee(dev, &eee_data);
	eee_data.advertised = 0;
	ax88179_ethtool_set_eee(dev, &eee_data);

	/* Restart autoneg */
	mii_nway_restart(&dev->mii);

	usbnet_link_change(dev, 0, 0);

	return 0;
}

static int ax88179_net_reset(struct usbnet *dev)
{
	struct ax88179_data *ax179_data = dev->driver_priv;

	if (ax179_data->initialized)
		ax88179_reset(dev);
	else
		ax179_data->initialized = 1;

	return 0;
}

static int ax88179_stop(struct usbnet *dev)
{
	u16 tmp16;

	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			 2, 2, &tmp16);
	tmp16 &= ~AX_MEDIUM_RECEIVE_EN;
	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
			  2, 2, &tmp16);

	return 0;
}

static const struct driver_info ax88179_info = {
	.description = "ASIX AX88179 USB 3.0 Gigabit Ethernet",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info ax88178a_info = {
	.description = "ASIX AX88178A USB 2.0 Gigabit Ethernet",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info cypress_GX3_info = {
	.description = "Cypress GX3 SuperSpeed to Gigabit Ethernet Controller",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info dlink_dub1312_info = {
	.description = "D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info sitecom_info = {
	.description = "Sitecom USB 3.0 to Gigabit Adapter",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info samsung_info = {
	.description = "Samsung USB Ethernet Adapter",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info lenovo_info = {
	.description = "Lenovo OneLinkDock Gigabit LAN",
	.bind = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset = ax88179_net_reset,
	.stop = ax88179_stop,
	.flags = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info belkin_info = {
	.description = "Belkin USB Ethernet Adapter",
	.bind	= ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset	= ax88179_net_reset,
	.stop	= ax88179_stop,
	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info toshiba_info = {
	.description = "Toshiba USB Ethernet Adapter",
	.bind	= ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset	= ax88179_net_reset,
	.stop = ax88179_stop,
	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info mct_info = {
	.description = "MCT USB 3.0 Gigabit Ethernet Adapter",
	.bind	= ax88179_bind,
	.unbind	= ax88179_unbind,
	.status	= ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset	= ax88179_net_reset,
	.stop	= ax88179_stop,
	.flags	= FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info at_umc2000_info = {
	.description = "AT-UMC2000 USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter",
	.bind   = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset  = ax88179_net_reset,
	.stop   = ax88179_stop,
	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info at_umc200_info = {
	.description = "AT-UMC200 USB 3.0/USB 3.1 Gen 1 to Fast Ethernet Adapter",
	.bind   = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset  = ax88179_net_reset,
	.stop   = ax88179_stop,
	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct driver_info at_umc2000sp_info = {
	.description = "AT-UMC2000/SP USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter",
	.bind   = ax88179_bind,
	.unbind = ax88179_unbind,
	.status = ax88179_status,
	.link_reset = ax88179_link_reset,
	.reset  = ax88179_net_reset,
	.stop   = ax88179_stop,
	.flags  = FLAG_ETHER | FLAG_FRAMING_AX,
	.rx_fixup = ax88179_rx_fixup,
	.tx_fixup = ax88179_tx_fixup,
};

static const struct usb_device_id products[] = {
{
	/* ASIX AX88179 10/100/1000 */
	USB_DEVICE_AND_INTERFACE_INFO(0x0b95, 0x1790, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&ax88179_info,
}, {
	/* ASIX AX88178A 10/100/1000 */
	USB_DEVICE_AND_INTERFACE_INFO(0x0b95, 0x178a, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&ax88178a_info,
}, {
	/* Cypress GX3 SuperSpeed to Gigabit Ethernet Bridge Controller */
	USB_DEVICE_AND_INTERFACE_INFO(0x04b4, 0x3610, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&cypress_GX3_info,
}, {
	/* D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x4a00, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&dlink_dub1312_info,
}, {
	/* Sitecom USB 3.0 to Gigabit Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x0df6, 0x0072, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&sitecom_info,
}, {
	/* Samsung USB Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x04e8, 0xa100, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&samsung_info,
}, {
	/* Lenovo OneLinkDock Gigabit LAN */
	USB_DEVICE_AND_INTERFACE_INFO(0x17ef, 0x304b, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&lenovo_info,
}, {
	/* Belkin B2B128 USB 3.0 Hub + Gigabit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x050d, 0x0128, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&belkin_info,
}, {
	/* Toshiba USB 3.0 GBit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x0930, 0x0a13, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&toshiba_info,
}, {
	/* Magic Control Technology U3-A9003 USB 3.0 Gigabit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x0711, 0x0179, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&mct_info,
}, {
	/* Allied Telesis AT-UMC2000 USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x000e, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&at_umc2000_info,
}, {
	/* Allied Telesis AT-UMC200 USB 3.0/USB 3.1 Gen 1 to Fast Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x000f, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&at_umc200_info,
}, {
	/* Allied Telesis AT-UMC2000/SP USB 3.0/USB 3.1 Gen 1 to Gigabit Ethernet Adapter */
	USB_DEVICE_AND_INTERFACE_INFO(0x07c9, 0x0010, 0xff, 0xff, 0),
	.driver_info = (unsigned long)&at_umc2000sp_info,
},
	{ },
};
MODULE_DEVICE_TABLE(usb, products);

static struct usb_driver ax88179_178a_driver = {
	.name =		"ax88179_178a",
	.id_table =	products,
	.probe =	usbnet_probe,
	.suspend =	ax88179_suspend,
	.resume =	ax88179_resume,
	.reset_resume =	ax88179_resume,
	.disconnect =	ax88179_disconnect,
	.supports_autosuspend = 1,
	.disable_hub_initiated_lpm = 1,
};

module_usb_driver(ax88179_178a_driver);

MODULE_DESCRIPTION("ASIX AX88179/178A based USB 3.0/2.0 Gigabit Ethernet Devices");
MODULE_LICENSE("GPL");