summaryrefslogtreecommitdiff
path: root/drivers/net/dsa/lantiq_gswip.c
blob: 4e64835deac2be7ee7d88959e643236d1383d93f (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
// SPDX-License-Identifier: GPL-2.0
/*
 * Lantiq / Intel GSWIP switch driver for VRX200 SoCs
 *
 * Copyright (C) 2010 Lantiq Deutschland
 * Copyright (C) 2012 John Crispin <john@phrozen.org>
 * Copyright (C) 2017 - 2019 Hauke Mehrtens <hauke@hauke-m.de>
 *
 * The VLAN and bridge model the GSWIP hardware uses does not directly
 * matches the model DSA uses.
 *
 * The hardware has 64 possible table entries for bridges with one VLAN
 * ID, one flow id and a list of ports for each bridge. All entries which
 * match the same flow ID are combined in the mac learning table, they
 * act as one global bridge.
 * The hardware does not support VLAN filter on the port, but on the
 * bridge, this driver converts the DSA model to the hardware.
 *
 * The CPU gets all the exception frames which do not match any forwarding
 * rule and the CPU port is also added to all bridges. This makes it possible
 * to handle all the special cases easily in software.
 * At the initialization the driver allocates one bridge table entry for
 * each switch port which is used when the port is used without an
 * explicit bridge. This prevents the frames from being forwarded
 * between all LAN ports by default.
 */

#include <linux/clk.h>
#include <linux/etherdevice.h>
#include <linux/firmware.h>
#include <linux/if_bridge.h>
#include <linux/if_vlan.h>
#include <linux/iopoll.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/phylink.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <net/dsa.h>
#include <dt-bindings/mips/lantiq_rcu_gphy.h>

#include "lantiq_pce.h"

/* GSWIP MDIO Registers */
#define GSWIP_MDIO_GLOB			0x00
#define  GSWIP_MDIO_GLOB_ENABLE		BIT(15)
#define GSWIP_MDIO_CTRL			0x08
#define  GSWIP_MDIO_CTRL_BUSY		BIT(12)
#define  GSWIP_MDIO_CTRL_RD		BIT(11)
#define  GSWIP_MDIO_CTRL_WR		BIT(10)
#define  GSWIP_MDIO_CTRL_PHYAD_MASK	0x1f
#define  GSWIP_MDIO_CTRL_PHYAD_SHIFT	5
#define  GSWIP_MDIO_CTRL_REGAD_MASK	0x1f
#define GSWIP_MDIO_READ			0x09
#define GSWIP_MDIO_WRITE		0x0A
#define GSWIP_MDIO_MDC_CFG0		0x0B
#define GSWIP_MDIO_MDC_CFG1		0x0C
#define GSWIP_MDIO_PHYp(p)		(0x15 - (p))
#define  GSWIP_MDIO_PHY_LINK_MASK	0x6000
#define  GSWIP_MDIO_PHY_LINK_AUTO	0x0000
#define  GSWIP_MDIO_PHY_LINK_DOWN	0x4000
#define  GSWIP_MDIO_PHY_LINK_UP		0x2000
#define  GSWIP_MDIO_PHY_SPEED_MASK	0x1800
#define  GSWIP_MDIO_PHY_SPEED_AUTO	0x1800
#define  GSWIP_MDIO_PHY_SPEED_M10	0x0000
#define  GSWIP_MDIO_PHY_SPEED_M100	0x0800
#define  GSWIP_MDIO_PHY_SPEED_G1	0x1000
#define  GSWIP_MDIO_PHY_FDUP_MASK	0x0600
#define  GSWIP_MDIO_PHY_FDUP_AUTO	0x0000
#define  GSWIP_MDIO_PHY_FDUP_EN		0x0200
#define  GSWIP_MDIO_PHY_FDUP_DIS	0x0600
#define  GSWIP_MDIO_PHY_FCONTX_MASK	0x0180
#define  GSWIP_MDIO_PHY_FCONTX_AUTO	0x0000
#define  GSWIP_MDIO_PHY_FCONTX_EN	0x0100
#define  GSWIP_MDIO_PHY_FCONTX_DIS	0x0180
#define  GSWIP_MDIO_PHY_FCONRX_MASK	0x0060
#define  GSWIP_MDIO_PHY_FCONRX_AUTO	0x0000
#define  GSWIP_MDIO_PHY_FCONRX_EN	0x0020
#define  GSWIP_MDIO_PHY_FCONRX_DIS	0x0060
#define  GSWIP_MDIO_PHY_ADDR_MASK	0x001f
#define  GSWIP_MDIO_PHY_MASK		(GSWIP_MDIO_PHY_ADDR_MASK | \
					 GSWIP_MDIO_PHY_FCONRX_MASK | \
					 GSWIP_MDIO_PHY_FCONTX_MASK | \
					 GSWIP_MDIO_PHY_LINK_MASK | \
					 GSWIP_MDIO_PHY_SPEED_MASK | \
					 GSWIP_MDIO_PHY_FDUP_MASK)

/* GSWIP MII Registers */
#define GSWIP_MII_CFG0			0x00
#define GSWIP_MII_CFG1			0x02
#define GSWIP_MII_CFG5			0x04
#define  GSWIP_MII_CFG_EN		BIT(14)
#define  GSWIP_MII_CFG_LDCLKDIS		BIT(12)
#define  GSWIP_MII_CFG_MODE_MIIP	0x0
#define  GSWIP_MII_CFG_MODE_MIIM	0x1
#define  GSWIP_MII_CFG_MODE_RMIIP	0x2
#define  GSWIP_MII_CFG_MODE_RMIIM	0x3
#define  GSWIP_MII_CFG_MODE_RGMII	0x4
#define  GSWIP_MII_CFG_MODE_MASK	0xf
#define  GSWIP_MII_CFG_RATE_M2P5	0x00
#define  GSWIP_MII_CFG_RATE_M25	0x10
#define  GSWIP_MII_CFG_RATE_M125	0x20
#define  GSWIP_MII_CFG_RATE_M50	0x30
#define  GSWIP_MII_CFG_RATE_AUTO	0x40
#define  GSWIP_MII_CFG_RATE_MASK	0x70
#define GSWIP_MII_PCDU0			0x01
#define GSWIP_MII_PCDU1			0x03
#define GSWIP_MII_PCDU5			0x05
#define  GSWIP_MII_PCDU_TXDLY_MASK	GENMASK(2, 0)
#define  GSWIP_MII_PCDU_RXDLY_MASK	GENMASK(9, 7)

/* GSWIP Core Registers */
#define GSWIP_SWRES			0x000
#define  GSWIP_SWRES_R1			BIT(1)	/* GSWIP Software reset */
#define  GSWIP_SWRES_R0			BIT(0)	/* GSWIP Hardware reset */
#define GSWIP_VERSION			0x013
#define  GSWIP_VERSION_REV_SHIFT	0
#define  GSWIP_VERSION_REV_MASK		GENMASK(7, 0)
#define  GSWIP_VERSION_MOD_SHIFT	8
#define  GSWIP_VERSION_MOD_MASK		GENMASK(15, 8)
#define   GSWIP_VERSION_2_0		0x100
#define   GSWIP_VERSION_2_1		0x021
#define   GSWIP_VERSION_2_2		0x122
#define   GSWIP_VERSION_2_2_ETC		0x022

#define GSWIP_BM_RAM_VAL(x)		(0x043 - (x))
#define GSWIP_BM_RAM_ADDR		0x044
#define GSWIP_BM_RAM_CTRL		0x045
#define  GSWIP_BM_RAM_CTRL_BAS		BIT(15)
#define  GSWIP_BM_RAM_CTRL_OPMOD	BIT(5)
#define  GSWIP_BM_RAM_CTRL_ADDR_MASK	GENMASK(4, 0)
#define GSWIP_BM_QUEUE_GCTRL		0x04A
#define  GSWIP_BM_QUEUE_GCTRL_GL_MOD	BIT(10)
/* buffer management Port Configuration Register */
#define GSWIP_BM_PCFGp(p)		(0x080 + ((p) * 2))
#define  GSWIP_BM_PCFG_CNTEN		BIT(0)	/* RMON Counter Enable */
#define  GSWIP_BM_PCFG_IGCNT		BIT(1)	/* Ingres Special Tag RMON count */
/* buffer management Port Control Register */
#define GSWIP_BM_RMON_CTRLp(p)		(0x81 + ((p) * 2))
#define  GSWIP_BM_CTRL_RMON_RAM1_RES	BIT(0)	/* Software Reset for RMON RAM 1 */
#define  GSWIP_BM_CTRL_RMON_RAM2_RES	BIT(1)	/* Software Reset for RMON RAM 2 */

/* PCE */
#define GSWIP_PCE_TBL_KEY(x)		(0x447 - (x))
#define GSWIP_PCE_TBL_MASK		0x448
#define GSWIP_PCE_TBL_VAL(x)		(0x44D - (x))
#define GSWIP_PCE_TBL_ADDR		0x44E
#define GSWIP_PCE_TBL_CTRL		0x44F
#define  GSWIP_PCE_TBL_CTRL_BAS		BIT(15)
#define  GSWIP_PCE_TBL_CTRL_TYPE	BIT(13)
#define  GSWIP_PCE_TBL_CTRL_VLD		BIT(12)
#define  GSWIP_PCE_TBL_CTRL_KEYFORM	BIT(11)
#define  GSWIP_PCE_TBL_CTRL_GMAP_MASK	GENMASK(10, 7)
#define  GSWIP_PCE_TBL_CTRL_OPMOD_MASK	GENMASK(6, 5)
#define  GSWIP_PCE_TBL_CTRL_OPMOD_ADRD	0x00
#define  GSWIP_PCE_TBL_CTRL_OPMOD_ADWR	0x20
#define  GSWIP_PCE_TBL_CTRL_OPMOD_KSRD	0x40
#define  GSWIP_PCE_TBL_CTRL_OPMOD_KSWR	0x60
#define  GSWIP_PCE_TBL_CTRL_ADDR_MASK	GENMASK(4, 0)
#define GSWIP_PCE_PMAP1			0x453	/* Monitoring port map */
#define GSWIP_PCE_PMAP2			0x454	/* Default Multicast port map */
#define GSWIP_PCE_PMAP3			0x455	/* Default Unknown Unicast port map */
#define GSWIP_PCE_GCTRL_0		0x456
#define  GSWIP_PCE_GCTRL_0_MTFL		BIT(0)  /* MAC Table Flushing */
#define  GSWIP_PCE_GCTRL_0_MC_VALID	BIT(3)
#define  GSWIP_PCE_GCTRL_0_VLAN		BIT(14) /* VLAN aware Switching */
#define GSWIP_PCE_GCTRL_1		0x457
#define  GSWIP_PCE_GCTRL_1_MAC_GLOCK	BIT(2)	/* MAC Address table lock */
#define  GSWIP_PCE_GCTRL_1_MAC_GLOCK_MOD	BIT(3) /* Mac address table lock forwarding mode */
#define GSWIP_PCE_PCTRL_0p(p)		(0x480 + ((p) * 0xA))
#define  GSWIP_PCE_PCTRL_0_TVM		BIT(5)	/* Transparent VLAN mode */
#define  GSWIP_PCE_PCTRL_0_VREP		BIT(6)	/* VLAN Replace Mode */
#define  GSWIP_PCE_PCTRL_0_INGRESS	BIT(11)	/* Accept special tag in ingress */
#define  GSWIP_PCE_PCTRL_0_PSTATE_LISTEN	0x0
#define  GSWIP_PCE_PCTRL_0_PSTATE_RX		0x1
#define  GSWIP_PCE_PCTRL_0_PSTATE_TX		0x2
#define  GSWIP_PCE_PCTRL_0_PSTATE_LEARNING	0x3
#define  GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING	0x7
#define  GSWIP_PCE_PCTRL_0_PSTATE_MASK	GENMASK(2, 0)
#define GSWIP_PCE_VCTRL(p)		(0x485 + ((p) * 0xA))
#define  GSWIP_PCE_VCTRL_UVR		BIT(0)	/* Unknown VLAN Rule */
#define  GSWIP_PCE_VCTRL_VIMR		BIT(3)	/* VLAN Ingress Member violation rule */
#define  GSWIP_PCE_VCTRL_VEMR		BIT(4)	/* VLAN Egress Member violation rule */
#define  GSWIP_PCE_VCTRL_VSR		BIT(5)	/* VLAN Security */
#define  GSWIP_PCE_VCTRL_VID0		BIT(6)	/* Priority Tagged Rule */
#define GSWIP_PCE_DEFPVID(p)		(0x486 + ((p) * 0xA))

#define GSWIP_MAC_FLEN			0x8C5
#define GSWIP_MAC_CTRL_2p(p)		(0x905 + ((p) * 0xC))
#define GSWIP_MAC_CTRL_2_MLEN		BIT(3) /* Maximum Untagged Frame Lnegth */

/* Ethernet Switch Fetch DMA Port Control Register */
#define GSWIP_FDMA_PCTRLp(p)		(0xA80 + ((p) * 0x6))
#define  GSWIP_FDMA_PCTRL_EN		BIT(0)	/* FDMA Port Enable */
#define  GSWIP_FDMA_PCTRL_STEN		BIT(1)	/* Special Tag Insertion Enable */
#define  GSWIP_FDMA_PCTRL_VLANMOD_MASK	GENMASK(4, 3)	/* VLAN Modification Control */
#define  GSWIP_FDMA_PCTRL_VLANMOD_SHIFT	3	/* VLAN Modification Control */
#define  GSWIP_FDMA_PCTRL_VLANMOD_DIS	(0x0 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
#define  GSWIP_FDMA_PCTRL_VLANMOD_PRIO	(0x1 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
#define  GSWIP_FDMA_PCTRL_VLANMOD_ID	(0x2 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)
#define  GSWIP_FDMA_PCTRL_VLANMOD_BOTH	(0x3 << GSWIP_FDMA_PCTRL_VLANMOD_SHIFT)

/* Ethernet Switch Store DMA Port Control Register */
#define GSWIP_SDMA_PCTRLp(p)		(0xBC0 + ((p) * 0x6))
#define  GSWIP_SDMA_PCTRL_EN		BIT(0)	/* SDMA Port Enable */
#define  GSWIP_SDMA_PCTRL_FCEN		BIT(1)	/* Flow Control Enable */
#define  GSWIP_SDMA_PCTRL_PAUFWD	BIT(1)	/* Pause Frame Forwarding */

#define GSWIP_TABLE_ACTIVE_VLAN		0x01
#define GSWIP_TABLE_VLAN_MAPPING	0x02
#define GSWIP_TABLE_MAC_BRIDGE		0x0b
#define  GSWIP_TABLE_MAC_BRIDGE_STATIC	0x01	/* Static not, aging entry */

#define XRX200_GPHY_FW_ALIGN	(16 * 1024)

struct gswip_hw_info {
	int max_ports;
	int cpu_port;
};

struct xway_gphy_match_data {
	char *fe_firmware_name;
	char *ge_firmware_name;
};

struct gswip_gphy_fw {
	struct clk *clk_gate;
	struct reset_control *reset;
	u32 fw_addr_offset;
	char *fw_name;
};

struct gswip_vlan {
	struct net_device *bridge;
	u16 vid;
	u8 fid;
};

struct gswip_priv {
	__iomem void *gswip;
	__iomem void *mdio;
	__iomem void *mii;
	const struct gswip_hw_info *hw_info;
	const struct xway_gphy_match_data *gphy_fw_name_cfg;
	struct dsa_switch *ds;
	struct device *dev;
	struct regmap *rcu_regmap;
	struct gswip_vlan vlans[64];
	int num_gphy_fw;
	struct gswip_gphy_fw *gphy_fw;
	u32 port_vlan_filter;
};

struct gswip_pce_table_entry {
	u16 index;      // PCE_TBL_ADDR.ADDR = pData->table_index
	u16 table;      // PCE_TBL_CTRL.ADDR = pData->table
	u16 key[8];
	u16 val[5];
	u16 mask;
	u8 gmap;
	bool type;
	bool valid;
	bool key_mode;
};

struct gswip_rmon_cnt_desc {
	unsigned int size;
	unsigned int offset;
	const char *name;
};

#define MIB_DESC(_size, _offset, _name) {.size = _size, .offset = _offset, .name = _name}

static const struct gswip_rmon_cnt_desc gswip_rmon_cnt[] = {
	/** Receive Packet Count (only packets that are accepted and not discarded). */
	MIB_DESC(1, 0x1F, "RxGoodPkts"),
	MIB_DESC(1, 0x23, "RxUnicastPkts"),
	MIB_DESC(1, 0x22, "RxMulticastPkts"),
	MIB_DESC(1, 0x21, "RxFCSErrorPkts"),
	MIB_DESC(1, 0x1D, "RxUnderSizeGoodPkts"),
	MIB_DESC(1, 0x1E, "RxUnderSizeErrorPkts"),
	MIB_DESC(1, 0x1B, "RxOversizeGoodPkts"),
	MIB_DESC(1, 0x1C, "RxOversizeErrorPkts"),
	MIB_DESC(1, 0x20, "RxGoodPausePkts"),
	MIB_DESC(1, 0x1A, "RxAlignErrorPkts"),
	MIB_DESC(1, 0x12, "Rx64BytePkts"),
	MIB_DESC(1, 0x13, "Rx127BytePkts"),
	MIB_DESC(1, 0x14, "Rx255BytePkts"),
	MIB_DESC(1, 0x15, "Rx511BytePkts"),
	MIB_DESC(1, 0x16, "Rx1023BytePkts"),
	/** Receive Size 1024-1522 (or more, if configured) Packet Count. */
	MIB_DESC(1, 0x17, "RxMaxBytePkts"),
	MIB_DESC(1, 0x18, "RxDroppedPkts"),
	MIB_DESC(1, 0x19, "RxFilteredPkts"),
	MIB_DESC(2, 0x24, "RxGoodBytes"),
	MIB_DESC(2, 0x26, "RxBadBytes"),
	MIB_DESC(1, 0x11, "TxAcmDroppedPkts"),
	MIB_DESC(1, 0x0C, "TxGoodPkts"),
	MIB_DESC(1, 0x06, "TxUnicastPkts"),
	MIB_DESC(1, 0x07, "TxMulticastPkts"),
	MIB_DESC(1, 0x00, "Tx64BytePkts"),
	MIB_DESC(1, 0x01, "Tx127BytePkts"),
	MIB_DESC(1, 0x02, "Tx255BytePkts"),
	MIB_DESC(1, 0x03, "Tx511BytePkts"),
	MIB_DESC(1, 0x04, "Tx1023BytePkts"),
	/** Transmit Size 1024-1522 (or more, if configured) Packet Count. */
	MIB_DESC(1, 0x05, "TxMaxBytePkts"),
	MIB_DESC(1, 0x08, "TxSingleCollCount"),
	MIB_DESC(1, 0x09, "TxMultCollCount"),
	MIB_DESC(1, 0x0A, "TxLateCollCount"),
	MIB_DESC(1, 0x0B, "TxExcessCollCount"),
	MIB_DESC(1, 0x0D, "TxPauseCount"),
	MIB_DESC(1, 0x10, "TxDroppedPkts"),
	MIB_DESC(2, 0x0E, "TxGoodBytes"),
};

static u32 gswip_switch_r(struct gswip_priv *priv, u32 offset)
{
	return __raw_readl(priv->gswip + (offset * 4));
}

static void gswip_switch_w(struct gswip_priv *priv, u32 val, u32 offset)
{
	__raw_writel(val, priv->gswip + (offset * 4));
}

static void gswip_switch_mask(struct gswip_priv *priv, u32 clear, u32 set,
			      u32 offset)
{
	u32 val = gswip_switch_r(priv, offset);

	val &= ~(clear);
	val |= set;
	gswip_switch_w(priv, val, offset);
}

static u32 gswip_switch_r_timeout(struct gswip_priv *priv, u32 offset,
				  u32 cleared)
{
	u32 val;

	return readx_poll_timeout(__raw_readl, priv->gswip + (offset * 4), val,
				  (val & cleared) == 0, 20, 50000);
}

static u32 gswip_mdio_r(struct gswip_priv *priv, u32 offset)
{
	return __raw_readl(priv->mdio + (offset * 4));
}

static void gswip_mdio_w(struct gswip_priv *priv, u32 val, u32 offset)
{
	__raw_writel(val, priv->mdio + (offset * 4));
}

static void gswip_mdio_mask(struct gswip_priv *priv, u32 clear, u32 set,
			    u32 offset)
{
	u32 val = gswip_mdio_r(priv, offset);

	val &= ~(clear);
	val |= set;
	gswip_mdio_w(priv, val, offset);
}

static u32 gswip_mii_r(struct gswip_priv *priv, u32 offset)
{
	return __raw_readl(priv->mii + (offset * 4));
}

static void gswip_mii_w(struct gswip_priv *priv, u32 val, u32 offset)
{
	__raw_writel(val, priv->mii + (offset * 4));
}

static void gswip_mii_mask(struct gswip_priv *priv, u32 clear, u32 set,
			   u32 offset)
{
	u32 val = gswip_mii_r(priv, offset);

	val &= ~(clear);
	val |= set;
	gswip_mii_w(priv, val, offset);
}

static void gswip_mii_mask_cfg(struct gswip_priv *priv, u32 clear, u32 set,
			       int port)
{
	switch (port) {
	case 0:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_CFG0);
		break;
	case 1:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_CFG1);
		break;
	case 5:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_CFG5);
		break;
	}
}

static void gswip_mii_mask_pcdu(struct gswip_priv *priv, u32 clear, u32 set,
				int port)
{
	switch (port) {
	case 0:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU0);
		break;
	case 1:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU1);
		break;
	case 5:
		gswip_mii_mask(priv, clear, set, GSWIP_MII_PCDU5);
		break;
	}
}

static int gswip_mdio_poll(struct gswip_priv *priv)
{
	int cnt = 100;

	while (likely(cnt--)) {
		u32 ctrl = gswip_mdio_r(priv, GSWIP_MDIO_CTRL);

		if ((ctrl & GSWIP_MDIO_CTRL_BUSY) == 0)
			return 0;
		usleep_range(20, 40);
	}

	return -ETIMEDOUT;
}

static int gswip_mdio_wr(struct mii_bus *bus, int addr, int reg, u16 val)
{
	struct gswip_priv *priv = bus->priv;
	int err;

	err = gswip_mdio_poll(priv);
	if (err) {
		dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
		return err;
	}

	gswip_mdio_w(priv, val, GSWIP_MDIO_WRITE);
	gswip_mdio_w(priv, GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_WR |
		((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
		(reg & GSWIP_MDIO_CTRL_REGAD_MASK),
		GSWIP_MDIO_CTRL);

	return 0;
}

static int gswip_mdio_rd(struct mii_bus *bus, int addr, int reg)
{
	struct gswip_priv *priv = bus->priv;
	int err;

	err = gswip_mdio_poll(priv);
	if (err) {
		dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
		return err;
	}

	gswip_mdio_w(priv, GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_RD |
		((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
		(reg & GSWIP_MDIO_CTRL_REGAD_MASK),
		GSWIP_MDIO_CTRL);

	err = gswip_mdio_poll(priv);
	if (err) {
		dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
		return err;
	}

	return gswip_mdio_r(priv, GSWIP_MDIO_READ);
}

static int gswip_mdio(struct gswip_priv *priv, struct device_node *mdio_np)
{
	struct dsa_switch *ds = priv->ds;

	ds->slave_mii_bus = devm_mdiobus_alloc(priv->dev);
	if (!ds->slave_mii_bus)
		return -ENOMEM;

	ds->slave_mii_bus->priv = priv;
	ds->slave_mii_bus->read = gswip_mdio_rd;
	ds->slave_mii_bus->write = gswip_mdio_wr;
	ds->slave_mii_bus->name = "lantiq,xrx200-mdio";
	snprintf(ds->slave_mii_bus->id, MII_BUS_ID_SIZE, "%s-mii",
		 dev_name(priv->dev));
	ds->slave_mii_bus->parent = priv->dev;
	ds->slave_mii_bus->phy_mask = ~ds->phys_mii_mask;

	return of_mdiobus_register(ds->slave_mii_bus, mdio_np);
}

static int gswip_pce_table_entry_read(struct gswip_priv *priv,
				      struct gswip_pce_table_entry *tbl)
{
	int i;
	int err;
	u16 crtl;
	u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSRD :
					GSWIP_PCE_TBL_CTRL_OPMOD_ADRD;

	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
				     GSWIP_PCE_TBL_CTRL_BAS);
	if (err)
		return err;

	gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
				GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
			  tbl->table | addr_mode | GSWIP_PCE_TBL_CTRL_BAS,
			  GSWIP_PCE_TBL_CTRL);

	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
				     GSWIP_PCE_TBL_CTRL_BAS);
	if (err)
		return err;

	for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
		tbl->key[i] = gswip_switch_r(priv, GSWIP_PCE_TBL_KEY(i));

	for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
		tbl->val[i] = gswip_switch_r(priv, GSWIP_PCE_TBL_VAL(i));

	tbl->mask = gswip_switch_r(priv, GSWIP_PCE_TBL_MASK);

	crtl = gswip_switch_r(priv, GSWIP_PCE_TBL_CTRL);

	tbl->type = !!(crtl & GSWIP_PCE_TBL_CTRL_TYPE);
	tbl->valid = !!(crtl & GSWIP_PCE_TBL_CTRL_VLD);
	tbl->gmap = (crtl & GSWIP_PCE_TBL_CTRL_GMAP_MASK) >> 7;

	return 0;
}

static int gswip_pce_table_entry_write(struct gswip_priv *priv,
				       struct gswip_pce_table_entry *tbl)
{
	int i;
	int err;
	u16 crtl;
	u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSWR :
					GSWIP_PCE_TBL_CTRL_OPMOD_ADWR;

	err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
				     GSWIP_PCE_TBL_CTRL_BAS);
	if (err)
		return err;

	gswip_switch_w(priv, tbl->index, GSWIP_PCE_TBL_ADDR);
	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
				GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
			  tbl->table | addr_mode,
			  GSWIP_PCE_TBL_CTRL);

	for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
		gswip_switch_w(priv, tbl->key[i], GSWIP_PCE_TBL_KEY(i));

	for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
		gswip_switch_w(priv, tbl->val[i], GSWIP_PCE_TBL_VAL(i));

	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
				GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
			  tbl->table | addr_mode,
			  GSWIP_PCE_TBL_CTRL);

	gswip_switch_w(priv, tbl->mask, GSWIP_PCE_TBL_MASK);

	crtl = gswip_switch_r(priv, GSWIP_PCE_TBL_CTRL);
	crtl &= ~(GSWIP_PCE_TBL_CTRL_TYPE | GSWIP_PCE_TBL_CTRL_VLD |
		  GSWIP_PCE_TBL_CTRL_GMAP_MASK);
	if (tbl->type)
		crtl |= GSWIP_PCE_TBL_CTRL_TYPE;
	if (tbl->valid)
		crtl |= GSWIP_PCE_TBL_CTRL_VLD;
	crtl |= (tbl->gmap << 7) & GSWIP_PCE_TBL_CTRL_GMAP_MASK;
	crtl |= GSWIP_PCE_TBL_CTRL_BAS;
	gswip_switch_w(priv, crtl, GSWIP_PCE_TBL_CTRL);

	return gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
				      GSWIP_PCE_TBL_CTRL_BAS);
}

/* Add the LAN port into a bridge with the CPU port by
 * default. This prevents automatic forwarding of
 * packages between the LAN ports when no explicit
 * bridge is configured.
 */
static int gswip_add_single_port_br(struct gswip_priv *priv, int port, bool add)
{
	struct gswip_pce_table_entry vlan_active = {0,};
	struct gswip_pce_table_entry vlan_mapping = {0,};
	unsigned int cpu_port = priv->hw_info->cpu_port;
	unsigned int max_ports = priv->hw_info->max_ports;
	int err;

	if (port >= max_ports) {
		dev_err(priv->dev, "single port for %i supported\n", port);
		return -EIO;
	}

	vlan_active.index = port + 1;
	vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
	vlan_active.key[0] = 0; /* vid */
	vlan_active.val[0] = port + 1 /* fid */;
	vlan_active.valid = add;
	err = gswip_pce_table_entry_write(priv, &vlan_active);
	if (err) {
		dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
		return err;
	}

	if (!add)
		return 0;

	vlan_mapping.index = port + 1;
	vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
	vlan_mapping.val[0] = 0 /* vid */;
	vlan_mapping.val[1] = BIT(port) | BIT(cpu_port);
	vlan_mapping.val[2] = 0;
	err = gswip_pce_table_entry_write(priv, &vlan_mapping);
	if (err) {
		dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
		return err;
	}

	return 0;
}

static int gswip_port_enable(struct dsa_switch *ds, int port,
			     struct phy_device *phydev)
{
	struct gswip_priv *priv = ds->priv;
	int err;

	if (!dsa_is_cpu_port(ds, port)) {
		err = gswip_add_single_port_br(priv, port, true);
		if (err)
			return err;
	}

	/* RMON Counter Enable for port */
	gswip_switch_w(priv, GSWIP_BM_PCFG_CNTEN, GSWIP_BM_PCFGp(port));

	/* enable port fetch/store dma & VLAN Modification */
	gswip_switch_mask(priv, 0, GSWIP_FDMA_PCTRL_EN |
				   GSWIP_FDMA_PCTRL_VLANMOD_BOTH,
			 GSWIP_FDMA_PCTRLp(port));
	gswip_switch_mask(priv, 0, GSWIP_SDMA_PCTRL_EN,
			  GSWIP_SDMA_PCTRLp(port));

	if (!dsa_is_cpu_port(ds, port)) {
		u32 macconf = GSWIP_MDIO_PHY_LINK_AUTO |
			      GSWIP_MDIO_PHY_SPEED_AUTO |
			      GSWIP_MDIO_PHY_FDUP_AUTO |
			      GSWIP_MDIO_PHY_FCONTX_AUTO |
			      GSWIP_MDIO_PHY_FCONRX_AUTO |
			      (phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK);

		gswip_mdio_w(priv, macconf, GSWIP_MDIO_PHYp(port));
		/* Activate MDIO auto polling */
		gswip_mdio_mask(priv, 0, BIT(port), GSWIP_MDIO_MDC_CFG0);
	}

	return 0;
}

static void gswip_port_disable(struct dsa_switch *ds, int port)
{
	struct gswip_priv *priv = ds->priv;

	if (!dsa_is_cpu_port(ds, port)) {
		gswip_mdio_mask(priv, GSWIP_MDIO_PHY_LINK_DOWN,
				GSWIP_MDIO_PHY_LINK_MASK,
				GSWIP_MDIO_PHYp(port));
		/* Deactivate MDIO auto polling */
		gswip_mdio_mask(priv, BIT(port), 0, GSWIP_MDIO_MDC_CFG0);
	}

	gswip_switch_mask(priv, GSWIP_FDMA_PCTRL_EN, 0,
			  GSWIP_FDMA_PCTRLp(port));
	gswip_switch_mask(priv, GSWIP_SDMA_PCTRL_EN, 0,
			  GSWIP_SDMA_PCTRLp(port));
}

static int gswip_pce_load_microcode(struct gswip_priv *priv)
{
	int i;
	int err;

	gswip_switch_mask(priv, GSWIP_PCE_TBL_CTRL_ADDR_MASK |
				GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
			  GSWIP_PCE_TBL_CTRL_OPMOD_ADWR, GSWIP_PCE_TBL_CTRL);
	gswip_switch_w(priv, 0, GSWIP_PCE_TBL_MASK);

	for (i = 0; i < ARRAY_SIZE(gswip_pce_microcode); i++) {
		gswip_switch_w(priv, i, GSWIP_PCE_TBL_ADDR);
		gswip_switch_w(priv, gswip_pce_microcode[i].val_0,
			       GSWIP_PCE_TBL_VAL(0));
		gswip_switch_w(priv, gswip_pce_microcode[i].val_1,
			       GSWIP_PCE_TBL_VAL(1));
		gswip_switch_w(priv, gswip_pce_microcode[i].val_2,
			       GSWIP_PCE_TBL_VAL(2));
		gswip_switch_w(priv, gswip_pce_microcode[i].val_3,
			       GSWIP_PCE_TBL_VAL(3));

		/* start the table access: */
		gswip_switch_mask(priv, 0, GSWIP_PCE_TBL_CTRL_BAS,
				  GSWIP_PCE_TBL_CTRL);
		err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
					     GSWIP_PCE_TBL_CTRL_BAS);
		if (err)
			return err;
	}

	/* tell the switch that the microcode is loaded */
	gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_MC_VALID,
			  GSWIP_PCE_GCTRL_0);

	return 0;
}

static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
				     bool vlan_filtering)
{
	struct gswip_priv *priv = ds->priv;
	struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;

	/* Do not allow changing the VLAN filtering options while in bridge */
	if (!!(priv->port_vlan_filter & BIT(port)) != vlan_filtering && bridge)
		return -EIO;

	if (vlan_filtering) {
		/* Use port based VLAN tag */
		gswip_switch_mask(priv,
				  GSWIP_PCE_VCTRL_VSR,
				  GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
				  GSWIP_PCE_VCTRL_VEMR,
				  GSWIP_PCE_VCTRL(port));
		gswip_switch_mask(priv, GSWIP_PCE_PCTRL_0_TVM, 0,
				  GSWIP_PCE_PCTRL_0p(port));
	} else {
		/* Use port based VLAN tag */
		gswip_switch_mask(priv,
				  GSWIP_PCE_VCTRL_UVR | GSWIP_PCE_VCTRL_VIMR |
				  GSWIP_PCE_VCTRL_VEMR,
				  GSWIP_PCE_VCTRL_VSR,
				  GSWIP_PCE_VCTRL(port));
		gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_TVM,
				  GSWIP_PCE_PCTRL_0p(port));
	}

	return 0;
}

static int gswip_setup(struct dsa_switch *ds)
{
	struct gswip_priv *priv = ds->priv;
	unsigned int cpu_port = priv->hw_info->cpu_port;
	int i;
	int err;

	gswip_switch_w(priv, GSWIP_SWRES_R0, GSWIP_SWRES);
	usleep_range(5000, 10000);
	gswip_switch_w(priv, 0, GSWIP_SWRES);

	/* disable port fetch/store dma on all ports */
	for (i = 0; i < priv->hw_info->max_ports; i++) {
		gswip_port_disable(ds, i);
		gswip_port_vlan_filtering(ds, i, false);
	}

	/* enable Switch */
	gswip_mdio_mask(priv, 0, GSWIP_MDIO_GLOB_ENABLE, GSWIP_MDIO_GLOB);

	err = gswip_pce_load_microcode(priv);
	if (err) {
		dev_err(priv->dev, "writing PCE microcode failed, %i", err);
		return err;
	}

	/* Default unknown Broadcast/Multicast/Unicast port maps */
	gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP1);
	gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP2);
	gswip_switch_w(priv, BIT(cpu_port), GSWIP_PCE_PMAP3);

	/* disable PHY auto polling */
	gswip_mdio_w(priv, 0x0, GSWIP_MDIO_MDC_CFG0);
	/* Configure the MDIO Clock 2.5 MHz */
	gswip_mdio_mask(priv, 0xff, 0x09, GSWIP_MDIO_MDC_CFG1);

	/* Disable the xMII link */
	gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, 0);
	gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, 1);
	gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, 5);

	/* enable special tag insertion on cpu port */
	gswip_switch_mask(priv, 0, GSWIP_FDMA_PCTRL_STEN,
			  GSWIP_FDMA_PCTRLp(cpu_port));

	/* accept special tag in ingress direction */
	gswip_switch_mask(priv, 0, GSWIP_PCE_PCTRL_0_INGRESS,
			  GSWIP_PCE_PCTRL_0p(cpu_port));

	gswip_switch_mask(priv, 0, GSWIP_MAC_CTRL_2_MLEN,
			  GSWIP_MAC_CTRL_2p(cpu_port));
	gswip_switch_w(priv, VLAN_ETH_FRAME_LEN + 8, GSWIP_MAC_FLEN);
	gswip_switch_mask(priv, 0, GSWIP_BM_QUEUE_GCTRL_GL_MOD,
			  GSWIP_BM_QUEUE_GCTRL);

	/* VLAN aware Switching */
	gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_VLAN, GSWIP_PCE_GCTRL_0);

	/* Flush MAC Table */
	gswip_switch_mask(priv, 0, GSWIP_PCE_GCTRL_0_MTFL, GSWIP_PCE_GCTRL_0);

	err = gswip_switch_r_timeout(priv, GSWIP_PCE_GCTRL_0,
				     GSWIP_PCE_GCTRL_0_MTFL);
	if (err) {
		dev_err(priv->dev, "MAC flushing didn't finish\n");
		return err;
	}

	gswip_port_enable(ds, cpu_port, NULL);
	return 0;
}

static enum dsa_tag_protocol gswip_get_tag_protocol(struct dsa_switch *ds,
						    int port)
{
	return DSA_TAG_PROTO_GSWIP;
}

static int gswip_vlan_active_create(struct gswip_priv *priv,
				    struct net_device *bridge,
				    int fid, u16 vid)
{
	struct gswip_pce_table_entry vlan_active = {0,};
	unsigned int max_ports = priv->hw_info->max_ports;
	int idx = -1;
	int err;
	int i;

	/* Look for a free slot */
	for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
		if (!priv->vlans[i].bridge) {
			idx = i;
			break;
		}
	}

	if (idx == -1)
		return -ENOSPC;

	if (fid == -1)
		fid = idx;

	vlan_active.index = idx;
	vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
	vlan_active.key[0] = vid;
	vlan_active.val[0] = fid;
	vlan_active.valid = true;

	err = gswip_pce_table_entry_write(priv, &vlan_active);
	if (err) {
		dev_err(priv->dev, "failed to write active VLAN: %d\n",	err);
		return err;
	}

	priv->vlans[idx].bridge = bridge;
	priv->vlans[idx].vid = vid;
	priv->vlans[idx].fid = fid;

	return idx;
}

static int gswip_vlan_active_remove(struct gswip_priv *priv, int idx)
{
	struct gswip_pce_table_entry vlan_active = {0,};
	int err;

	vlan_active.index = idx;
	vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
	vlan_active.valid = false;
	err = gswip_pce_table_entry_write(priv, &vlan_active);
	if (err)
		dev_err(priv->dev, "failed to delete active VLAN: %d\n", err);
	priv->vlans[idx].bridge = NULL;

	return err;
}

static int gswip_vlan_add_unaware(struct gswip_priv *priv,
				  struct net_device *bridge, int port)
{
	struct gswip_pce_table_entry vlan_mapping = {0,};
	unsigned int max_ports = priv->hw_info->max_ports;
	unsigned int cpu_port = priv->hw_info->cpu_port;
	bool active_vlan_created = false;
	int idx = -1;
	int i;
	int err;

	/* Check if there is already a page for this bridge */
	for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
		if (priv->vlans[i].bridge == bridge) {
			idx = i;
			break;
		}
	}

	/* If this bridge is not programmed yet, add a Active VLAN table
	 * entry in a free slot and prepare the VLAN mapping table entry.
	 */
	if (idx == -1) {
		idx = gswip_vlan_active_create(priv, bridge, -1, 0);
		if (idx < 0)
			return idx;
		active_vlan_created = true;

		vlan_mapping.index = idx;
		vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
		/* VLAN ID byte, maps to the VLAN ID of vlan active table */
		vlan_mapping.val[0] = 0;
	} else {
		/* Read the existing VLAN mapping entry from the switch */
		vlan_mapping.index = idx;
		vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
		err = gswip_pce_table_entry_read(priv, &vlan_mapping);
		if (err) {
			dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
				err);
			return err;
		}
	}

	/* Update the VLAN mapping entry and write it to the switch */
	vlan_mapping.val[1] |= BIT(cpu_port);
	vlan_mapping.val[1] |= BIT(port);
	err = gswip_pce_table_entry_write(priv, &vlan_mapping);
	if (err) {
		dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
		/* In case an Active VLAN was creaetd delete it again */
		if (active_vlan_created)
			gswip_vlan_active_remove(priv, idx);
		return err;
	}

	gswip_switch_w(priv, 0, GSWIP_PCE_DEFPVID(port));
	return 0;
}

static int gswip_vlan_add_aware(struct gswip_priv *priv,
				struct net_device *bridge, int port,
				u16 vid, bool untagged,
				bool pvid)
{
	struct gswip_pce_table_entry vlan_mapping = {0,};
	unsigned int max_ports = priv->hw_info->max_ports;
	unsigned int cpu_port = priv->hw_info->cpu_port;
	bool active_vlan_created = false;
	int idx = -1;
	int fid = -1;
	int i;
	int err;

	/* Check if there is already a page for this bridge */
	for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
		if (priv->vlans[i].bridge == bridge) {
			if (fid != -1 && fid != priv->vlans[i].fid)
				dev_err(priv->dev, "one bridge with multiple flow ids\n");
			fid = priv->vlans[i].fid;
			if (priv->vlans[i].vid == vid) {
				idx = i;
				break;
			}
		}
	}

	/* If this bridge is not programmed yet, add a Active VLAN table
	 * entry in a free slot and prepare the VLAN mapping table entry.
	 */
	if (idx == -1) {
		idx = gswip_vlan_active_create(priv, bridge, fid, vid);
		if (idx < 0)
			return idx;
		active_vlan_created = true;

		vlan_mapping.index = idx;
		vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
		/* VLAN ID byte, maps to the VLAN ID of vlan active table */
		vlan_mapping.val[0] = vid;
	} else {
		/* Read the existing VLAN mapping entry from the switch */
		vlan_mapping.index = idx;
		vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
		err = gswip_pce_table_entry_read(priv, &vlan_mapping);
		if (err) {
			dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
				err);
			return err;
		}
	}

	vlan_mapping.val[0] = vid;
	/* Update the VLAN mapping entry and write it to the switch */
	vlan_mapping.val[1] |= BIT(cpu_port);
	vlan_mapping.val[2] |= BIT(cpu_port);
	vlan_mapping.val[1] |= BIT(port);
	if (untagged)
		vlan_mapping.val[2] &= ~BIT(port);
	else
		vlan_mapping.val[2] |= BIT(port);
	err = gswip_pce_table_entry_write(priv, &vlan_mapping);
	if (err) {
		dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
		/* In case an Active VLAN was creaetd delete it again */
		if (active_vlan_created)
			gswip_vlan_active_remove(priv, idx);
		return err;
	}

	if (pvid)
		gswip_switch_w(priv, idx, GSWIP_PCE_DEFPVID(port));

	return 0;
}

static int gswip_vlan_remove(struct gswip_priv *priv,
			     struct net_device *bridge, int port,
			     u16 vid, bool pvid, bool vlan_aware)
{
	struct gswip_pce_table_entry vlan_mapping = {0,};
	unsigned int max_ports = priv->hw_info->max_ports;
	unsigned int cpu_port = priv->hw_info->cpu_port;
	int idx = -1;
	int i;
	int err;

	/* Check if there is already a page for this bridge */
	for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
		if (priv->vlans[i].bridge == bridge &&
		    (!vlan_aware || priv->vlans[i].vid == vid)) {
			idx = i;
			break;
		}
	}

	if (idx == -1) {
		dev_err(priv->dev, "bridge to leave does not exists\n");
		return -ENOENT;
	}

	vlan_mapping.index = idx;
	vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
	err = gswip_pce_table_entry_read(priv, &vlan_mapping);
	if (err) {
		dev_err(priv->dev, "failed to read VLAN mapping: %d\n",	err);
		return err;
	}

	vlan_mapping.val[1] &= ~BIT(port);
	vlan_mapping.val[2] &= ~BIT(port);
	err = gswip_pce_table_entry_write(priv, &vlan_mapping);
	if (err) {
		dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
		return err;
	}

	/* In case all ports are removed from the bridge, remove the VLAN */
	if ((vlan_mapping.val[1] & ~BIT(cpu_port)) == 0) {
		err = gswip_vlan_active_remove(priv, idx);
		if (err) {
			dev_err(priv->dev, "failed to write active VLAN: %d\n",
				err);
			return err;
		}
	}

	/* GSWIP 2.2 (GRX300) and later program here the VID directly. */
	if (pvid)
		gswip_switch_w(priv, 0, GSWIP_PCE_DEFPVID(port));

	return 0;
}

static int gswip_port_bridge_join(struct dsa_switch *ds, int port,
				  struct net_device *bridge)
{
	struct gswip_priv *priv = ds->priv;
	int err;

	/* When the bridge uses VLAN filtering we have to configure VLAN
	 * specific bridges. No bridge is configured here.
	 */
	if (!br_vlan_enabled(bridge)) {
		err = gswip_vlan_add_unaware(priv, bridge, port);
		if (err)
			return err;
		priv->port_vlan_filter &= ~BIT(port);
	} else {
		priv->port_vlan_filter |= BIT(port);
	}
	return gswip_add_single_port_br(priv, port, false);
}

static void gswip_port_bridge_leave(struct dsa_switch *ds, int port,
				    struct net_device *bridge)
{
	struct gswip_priv *priv = ds->priv;

	gswip_add_single_port_br(priv, port, true);

	/* When the bridge uses VLAN filtering we have to configure VLAN
	 * specific bridges. No bridge is configured here.
	 */
	if (!br_vlan_enabled(bridge))
		gswip_vlan_remove(priv, bridge, port, 0, true, false);
}

static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
				   const struct switchdev_obj_port_vlan *vlan)
{
	struct gswip_priv *priv = ds->priv;
	struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
	unsigned int max_ports = priv->hw_info->max_ports;
	u16 vid;
	int i;
	int pos = max_ports;

	/* We only support VLAN filtering on bridges */
	if (!dsa_is_cpu_port(ds, port) && !bridge)
		return -EOPNOTSUPP;

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
		int idx = -1;

		/* Check if there is already a page for this VLAN */
		for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
			if (priv->vlans[i].bridge == bridge &&
			    priv->vlans[i].vid == vid) {
				idx = i;
				break;
			}
		}

		/* If this VLAN is not programmed yet, we have to reserve
		 * one entry in the VLAN table. Make sure we start at the
		 * next position round.
		 */
		if (idx == -1) {
			/* Look for a free slot */
			for (; pos < ARRAY_SIZE(priv->vlans); pos++) {
				if (!priv->vlans[pos].bridge) {
					idx = pos;
					pos++;
					break;
				}
			}

			if (idx == -1)
				return -ENOSPC;
		}
	}

	return 0;
}

static void gswip_port_vlan_add(struct dsa_switch *ds, int port,
				const struct switchdev_obj_port_vlan *vlan)
{
	struct gswip_priv *priv = ds->priv;
	struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
	bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
	bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
	u16 vid;

	/* We have to receive all packets on the CPU port and should not
	 * do any VLAN filtering here. This is also called with bridge
	 * NULL and then we do not know for which bridge to configure
	 * this.
	 */
	if (dsa_is_cpu_port(ds, port))
		return;

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid)
		gswip_vlan_add_aware(priv, bridge, port, vid, untagged, pvid);
}

static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
			       const struct switchdev_obj_port_vlan *vlan)
{
	struct gswip_priv *priv = ds->priv;
	struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
	bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
	u16 vid;
	int err;

	/* We have to receive all packets on the CPU port and should not
	 * do any VLAN filtering here. This is also called with bridge
	 * NULL and then we do not know for which bridge to configure
	 * this.
	 */
	if (dsa_is_cpu_port(ds, port))
		return 0;

	for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
		err = gswip_vlan_remove(priv, bridge, port, vid, pvid, true);
		if (err)
			return err;
	}

	return 0;
}

static void gswip_port_fast_age(struct dsa_switch *ds, int port)
{
	struct gswip_priv *priv = ds->priv;
	struct gswip_pce_table_entry mac_bridge = {0,};
	int i;
	int err;

	for (i = 0; i < 2048; i++) {
		mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
		mac_bridge.index = i;

		err = gswip_pce_table_entry_read(priv, &mac_bridge);
		if (err) {
			dev_err(priv->dev, "failed to read mac bridge: %d\n",
				err);
			return;
		}

		if (!mac_bridge.valid)
			continue;

		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC)
			continue;

		if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) != port)
			continue;

		mac_bridge.valid = false;
		err = gswip_pce_table_entry_write(priv, &mac_bridge);
		if (err) {
			dev_err(priv->dev, "failed to write mac bridge: %d\n",
				err);
			return;
		}
	}
}

static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
{
	struct gswip_priv *priv = ds->priv;
	u32 stp_state;

	switch (state) {
	case BR_STATE_DISABLED:
		gswip_switch_mask(priv, GSWIP_SDMA_PCTRL_EN, 0,
				  GSWIP_SDMA_PCTRLp(port));
		return;
	case BR_STATE_BLOCKING:
	case BR_STATE_LISTENING:
		stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LISTEN;
		break;
	case BR_STATE_LEARNING:
		stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LEARNING;
		break;
	case BR_STATE_FORWARDING:
		stp_state = GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING;
		break;
	default:
		dev_err(priv->dev, "invalid STP state: %d\n", state);
		return;
	}

	gswip_switch_mask(priv, 0, GSWIP_SDMA_PCTRL_EN,
			  GSWIP_SDMA_PCTRLp(port));
	gswip_switch_mask(priv, GSWIP_PCE_PCTRL_0_PSTATE_MASK, stp_state,
			  GSWIP_PCE_PCTRL_0p(port));
}

static int gswip_port_fdb(struct dsa_switch *ds, int port,
			  const unsigned char *addr, u16 vid, bool add)
{
	struct gswip_priv *priv = ds->priv;
	struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
	struct gswip_pce_table_entry mac_bridge = {0,};
	unsigned int cpu_port = priv->hw_info->cpu_port;
	int fid = -1;
	int i;
	int err;

	if (!bridge)
		return -EINVAL;

	for (i = cpu_port; i < ARRAY_SIZE(priv->vlans); i++) {
		if (priv->vlans[i].bridge == bridge) {
			fid = priv->vlans[i].fid;
			break;
		}
	}

	if (fid == -1) {
		dev_err(priv->dev, "Port not part of a bridge\n");
		return -EINVAL;
	}

	mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
	mac_bridge.key_mode = true;
	mac_bridge.key[0] = addr[5] | (addr[4] << 8);
	mac_bridge.key[1] = addr[3] | (addr[2] << 8);
	mac_bridge.key[2] = addr[1] | (addr[0] << 8);
	mac_bridge.key[3] = fid;
	mac_bridge.val[0] = add ? BIT(port) : 0; /* port map */
	mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_STATIC;
	mac_bridge.valid = add;

	err = gswip_pce_table_entry_write(priv, &mac_bridge);
	if (err)
		dev_err(priv->dev, "failed to write mac bridge: %d\n", err);

	return err;
}

static int gswip_port_fdb_add(struct dsa_switch *ds, int port,
			      const unsigned char *addr, u16 vid)
{
	return gswip_port_fdb(ds, port, addr, vid, true);
}

static int gswip_port_fdb_del(struct dsa_switch *ds, int port,
			      const unsigned char *addr, u16 vid)
{
	return gswip_port_fdb(ds, port, addr, vid, false);
}

static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
			       dsa_fdb_dump_cb_t *cb, void *data)
{
	struct gswip_priv *priv = ds->priv;
	struct gswip_pce_table_entry mac_bridge = {0,};
	unsigned char addr[6];
	int i;
	int err;

	for (i = 0; i < 2048; i++) {
		mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
		mac_bridge.index = i;

		err = gswip_pce_table_entry_read(priv, &mac_bridge);
		if (err) {
			dev_err(priv->dev, "failed to write mac bridge: %d\n",
				err);
			return err;
		}

		if (!mac_bridge.valid)
			continue;

		addr[5] = mac_bridge.key[0] & 0xff;
		addr[4] = (mac_bridge.key[0] >> 8) & 0xff;
		addr[3] = mac_bridge.key[1] & 0xff;
		addr[2] = (mac_bridge.key[1] >> 8) & 0xff;
		addr[1] = mac_bridge.key[2] & 0xff;
		addr[0] = (mac_bridge.key[2] >> 8) & 0xff;
		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC) {
			if (mac_bridge.val[0] & BIT(port))
				cb(addr, 0, true, data);
		} else {
			if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) == port)
				cb(addr, 0, false, data);
		}
	}
	return 0;
}

static void gswip_phylink_validate(struct dsa_switch *ds, int port,
				   unsigned long *supported,
				   struct phylink_link_state *state)
{
	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };

	switch (port) {
	case 0:
	case 1:
		if (!phy_interface_mode_is_rgmii(state->interface) &&
		    state->interface != PHY_INTERFACE_MODE_MII &&
		    state->interface != PHY_INTERFACE_MODE_REVMII &&
		    state->interface != PHY_INTERFACE_MODE_RMII)
			goto unsupported;
		break;
	case 2:
	case 3:
	case 4:
		if (state->interface != PHY_INTERFACE_MODE_INTERNAL)
			goto unsupported;
		break;
	case 5:
		if (!phy_interface_mode_is_rgmii(state->interface) &&
		    state->interface != PHY_INTERFACE_MODE_INTERNAL)
			goto unsupported;
		break;
	default:
		bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
		dev_err(ds->dev, "Unsupported port: %i\n", port);
		return;
	}

	/* Allow all the expected bits */
	phylink_set(mask, Autoneg);
	phylink_set_port_modes(mask);
	phylink_set(mask, Pause);
	phylink_set(mask, Asym_Pause);

	/* With the exclusion of MII and Reverse MII, we support Gigabit,
	 * including Half duplex
	 */
	if (state->interface != PHY_INTERFACE_MODE_MII &&
	    state->interface != PHY_INTERFACE_MODE_REVMII) {
		phylink_set(mask, 1000baseT_Full);
		phylink_set(mask, 1000baseT_Half);
	}

	phylink_set(mask, 10baseT_Half);
	phylink_set(mask, 10baseT_Full);
	phylink_set(mask, 100baseT_Half);
	phylink_set(mask, 100baseT_Full);

	bitmap_and(supported, supported, mask,
		   __ETHTOOL_LINK_MODE_MASK_NBITS);
	bitmap_and(state->advertising, state->advertising, mask,
		   __ETHTOOL_LINK_MODE_MASK_NBITS);
	return;

unsupported:
	bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
	dev_err(ds->dev, "Unsupported interface: %d\n", state->interface);
	return;
}

static void gswip_phylink_mac_config(struct dsa_switch *ds, int port,
				     unsigned int mode,
				     const struct phylink_link_state *state)
{
	struct gswip_priv *priv = ds->priv;
	u32 miicfg = 0;

	miicfg |= GSWIP_MII_CFG_LDCLKDIS;

	switch (state->interface) {
	case PHY_INTERFACE_MODE_MII:
	case PHY_INTERFACE_MODE_INTERNAL:
		miicfg |= GSWIP_MII_CFG_MODE_MIIM;
		break;
	case PHY_INTERFACE_MODE_REVMII:
		miicfg |= GSWIP_MII_CFG_MODE_MIIP;
		break;
	case PHY_INTERFACE_MODE_RMII:
		miicfg |= GSWIP_MII_CFG_MODE_RMIIM;
		break;
	case PHY_INTERFACE_MODE_RGMII:
	case PHY_INTERFACE_MODE_RGMII_ID:
	case PHY_INTERFACE_MODE_RGMII_RXID:
	case PHY_INTERFACE_MODE_RGMII_TXID:
		miicfg |= GSWIP_MII_CFG_MODE_RGMII;
		break;
	default:
		dev_err(ds->dev,
			"Unsupported interface: %d\n", state->interface);
		return;
	}
	gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_MODE_MASK, miicfg, port);

	switch (state->interface) {
	case PHY_INTERFACE_MODE_RGMII_ID:
		gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK |
					  GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
		break;
	case PHY_INTERFACE_MODE_RGMII_RXID:
		gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
		break;
	case PHY_INTERFACE_MODE_RGMII_TXID:
		gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK, 0, port);
		break;
	default:
		break;
	}
}

static void gswip_phylink_mac_link_down(struct dsa_switch *ds, int port,
					unsigned int mode,
					phy_interface_t interface)
{
	struct gswip_priv *priv = ds->priv;

	gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, port);
}

static void gswip_phylink_mac_link_up(struct dsa_switch *ds, int port,
				      unsigned int mode,
				      phy_interface_t interface,
				      struct phy_device *phydev)
{
	struct gswip_priv *priv = ds->priv;

	/* Enable the xMII interface only for the external PHY */
	if (interface != PHY_INTERFACE_MODE_INTERNAL)
		gswip_mii_mask_cfg(priv, 0, GSWIP_MII_CFG_EN, port);
}

static void gswip_get_strings(struct dsa_switch *ds, int port, u32 stringset,
			      uint8_t *data)
{
	int i;

	if (stringset != ETH_SS_STATS)
		return;

	for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++)
		strncpy(data + i * ETH_GSTRING_LEN, gswip_rmon_cnt[i].name,
			ETH_GSTRING_LEN);
}

static u32 gswip_bcm_ram_entry_read(struct gswip_priv *priv, u32 table,
				    u32 index)
{
	u32 result;
	int err;

	gswip_switch_w(priv, index, GSWIP_BM_RAM_ADDR);
	gswip_switch_mask(priv, GSWIP_BM_RAM_CTRL_ADDR_MASK |
				GSWIP_BM_RAM_CTRL_OPMOD,
			      table | GSWIP_BM_RAM_CTRL_BAS,
			      GSWIP_BM_RAM_CTRL);

	err = gswip_switch_r_timeout(priv, GSWIP_BM_RAM_CTRL,
				     GSWIP_BM_RAM_CTRL_BAS);
	if (err) {
		dev_err(priv->dev, "timeout while reading table: %u, index: %u",
			table, index);
		return 0;
	}

	result = gswip_switch_r(priv, GSWIP_BM_RAM_VAL(0));
	result |= gswip_switch_r(priv, GSWIP_BM_RAM_VAL(1)) << 16;

	return result;
}

static void gswip_get_ethtool_stats(struct dsa_switch *ds, int port,
				    uint64_t *data)
{
	struct gswip_priv *priv = ds->priv;
	const struct gswip_rmon_cnt_desc *rmon_cnt;
	int i;
	u64 high;

	for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++) {
		rmon_cnt = &gswip_rmon_cnt[i];

		data[i] = gswip_bcm_ram_entry_read(priv, port,
						   rmon_cnt->offset);
		if (rmon_cnt->size == 2) {
			high = gswip_bcm_ram_entry_read(priv, port,
							rmon_cnt->offset + 1);
			data[i] |= high << 32;
		}
	}
}

static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
{
	if (sset != ETH_SS_STATS)
		return 0;

	return ARRAY_SIZE(gswip_rmon_cnt);
}

static const struct dsa_switch_ops gswip_switch_ops = {
	.get_tag_protocol	= gswip_get_tag_protocol,
	.setup			= gswip_setup,
	.port_enable		= gswip_port_enable,
	.port_disable		= gswip_port_disable,
	.port_bridge_join	= gswip_port_bridge_join,
	.port_bridge_leave	= gswip_port_bridge_leave,
	.port_fast_age		= gswip_port_fast_age,
	.port_vlan_filtering	= gswip_port_vlan_filtering,
	.port_vlan_prepare	= gswip_port_vlan_prepare,
	.port_vlan_add		= gswip_port_vlan_add,
	.port_vlan_del		= gswip_port_vlan_del,
	.port_stp_state_set	= gswip_port_stp_state_set,
	.port_fdb_add		= gswip_port_fdb_add,
	.port_fdb_del		= gswip_port_fdb_del,
	.port_fdb_dump		= gswip_port_fdb_dump,
	.phylink_validate	= gswip_phylink_validate,
	.phylink_mac_config	= gswip_phylink_mac_config,
	.phylink_mac_link_down	= gswip_phylink_mac_link_down,
	.phylink_mac_link_up	= gswip_phylink_mac_link_up,
	.get_strings		= gswip_get_strings,
	.get_ethtool_stats	= gswip_get_ethtool_stats,
	.get_sset_count		= gswip_get_sset_count,
};

static const struct xway_gphy_match_data xrx200a1x_gphy_data = {
	.fe_firmware_name = "lantiq/xrx200_phy22f_a14.bin",
	.ge_firmware_name = "lantiq/xrx200_phy11g_a14.bin",
};

static const struct xway_gphy_match_data xrx200a2x_gphy_data = {
	.fe_firmware_name = "lantiq/xrx200_phy22f_a22.bin",
	.ge_firmware_name = "lantiq/xrx200_phy11g_a22.bin",
};

static const struct xway_gphy_match_data xrx300_gphy_data = {
	.fe_firmware_name = "lantiq/xrx300_phy22f_a21.bin",
	.ge_firmware_name = "lantiq/xrx300_phy11g_a21.bin",
};

static const struct of_device_id xway_gphy_match[] = {
	{ .compatible = "lantiq,xrx200-gphy-fw", .data = NULL },
	{ .compatible = "lantiq,xrx200a1x-gphy-fw", .data = &xrx200a1x_gphy_data },
	{ .compatible = "lantiq,xrx200a2x-gphy-fw", .data = &xrx200a2x_gphy_data },
	{ .compatible = "lantiq,xrx300-gphy-fw", .data = &xrx300_gphy_data },
	{ .compatible = "lantiq,xrx330-gphy-fw", .data = &xrx300_gphy_data },
	{},
};

static int gswip_gphy_fw_load(struct gswip_priv *priv, struct gswip_gphy_fw *gphy_fw)
{
	struct device *dev = priv->dev;
	const struct firmware *fw;
	void *fw_addr;
	dma_addr_t dma_addr;
	dma_addr_t dev_addr;
	size_t size;
	int ret;

	ret = clk_prepare_enable(gphy_fw->clk_gate);
	if (ret)
		return ret;

	reset_control_assert(gphy_fw->reset);

	ret = request_firmware(&fw, gphy_fw->fw_name, dev);
	if (ret) {
		dev_err(dev, "failed to load firmware: %s, error: %i\n",
			gphy_fw->fw_name, ret);
		return ret;
	}

	/* GPHY cores need the firmware code in a persistent and contiguous
	 * memory area with a 16 kB boundary aligned start address.
	 */
	size = fw->size + XRX200_GPHY_FW_ALIGN;

	fw_addr = dmam_alloc_coherent(dev, size, &dma_addr, GFP_KERNEL);
	if (fw_addr) {
		fw_addr = PTR_ALIGN(fw_addr, XRX200_GPHY_FW_ALIGN);
		dev_addr = ALIGN(dma_addr, XRX200_GPHY_FW_ALIGN);
		memcpy(fw_addr, fw->data, fw->size);
	} else {
		dev_err(dev, "failed to alloc firmware memory\n");
		release_firmware(fw);
		return -ENOMEM;
	}

	release_firmware(fw);

	ret = regmap_write(priv->rcu_regmap, gphy_fw->fw_addr_offset, dev_addr);
	if (ret)
		return ret;

	reset_control_deassert(gphy_fw->reset);

	return ret;
}

static int gswip_gphy_fw_probe(struct gswip_priv *priv,
			       struct gswip_gphy_fw *gphy_fw,
			       struct device_node *gphy_fw_np, int i)
{
	struct device *dev = priv->dev;
	u32 gphy_mode;
	int ret;
	char gphyname[10];

	snprintf(gphyname, sizeof(gphyname), "gphy%d", i);

	gphy_fw->clk_gate = devm_clk_get(dev, gphyname);
	if (IS_ERR(gphy_fw->clk_gate)) {
		dev_err(dev, "Failed to lookup gate clock\n");
		return PTR_ERR(gphy_fw->clk_gate);
	}

	ret = of_property_read_u32(gphy_fw_np, "reg", &gphy_fw->fw_addr_offset);
	if (ret)
		return ret;

	ret = of_property_read_u32(gphy_fw_np, "lantiq,gphy-mode", &gphy_mode);
	/* Default to GE mode */
	if (ret)
		gphy_mode = GPHY_MODE_GE;

	switch (gphy_mode) {
	case GPHY_MODE_FE:
		gphy_fw->fw_name = priv->gphy_fw_name_cfg->fe_firmware_name;
		break;
	case GPHY_MODE_GE:
		gphy_fw->fw_name = priv->gphy_fw_name_cfg->ge_firmware_name;
		break;
	default:
		dev_err(dev, "Unknown GPHY mode %d\n", gphy_mode);
		return -EINVAL;
	}

	gphy_fw->reset = of_reset_control_array_get_exclusive(gphy_fw_np);
	if (IS_ERR(gphy_fw->reset)) {
		if (PTR_ERR(gphy_fw->reset) != -EPROBE_DEFER)
			dev_err(dev, "Failed to lookup gphy reset\n");
		return PTR_ERR(gphy_fw->reset);
	}

	return gswip_gphy_fw_load(priv, gphy_fw);
}

static void gswip_gphy_fw_remove(struct gswip_priv *priv,
				 struct gswip_gphy_fw *gphy_fw)
{
	int ret;

	/* check if the device was fully probed */
	if (!gphy_fw->fw_name)
		return;

	ret = regmap_write(priv->rcu_regmap, gphy_fw->fw_addr_offset, 0);
	if (ret)
		dev_err(priv->dev, "can not reset GPHY FW pointer");

	clk_disable_unprepare(gphy_fw->clk_gate);

	reset_control_put(gphy_fw->reset);
}

static int gswip_gphy_fw_list(struct gswip_priv *priv,
			      struct device_node *gphy_fw_list_np, u32 version)
{
	struct device *dev = priv->dev;
	struct device_node *gphy_fw_np;
	const struct of_device_id *match;
	int err;
	int i = 0;

	/* The VRX200 rev 1.1 uses the GSWIP 2.0 and needs the older
	 * GPHY firmware. The VRX200 rev 1.2 uses the GSWIP 2.1 and also
	 * needs a different GPHY firmware.
	 */
	if (of_device_is_compatible(gphy_fw_list_np, "lantiq,xrx200-gphy-fw")) {
		switch (version) {
		case GSWIP_VERSION_2_0:
			priv->gphy_fw_name_cfg = &xrx200a1x_gphy_data;
			break;
		case GSWIP_VERSION_2_1:
			priv->gphy_fw_name_cfg = &xrx200a2x_gphy_data;
			break;
		default:
			dev_err(dev, "unknown GSWIP version: 0x%x", version);
			return -ENOENT;
		}
	}

	match = of_match_node(xway_gphy_match, gphy_fw_list_np);
	if (match && match->data)
		priv->gphy_fw_name_cfg = match->data;

	if (!priv->gphy_fw_name_cfg) {
		dev_err(dev, "GPHY compatible type not supported");
		return -ENOENT;
	}

	priv->num_gphy_fw = of_get_available_child_count(gphy_fw_list_np);
	if (!priv->num_gphy_fw)
		return -ENOENT;

	priv->rcu_regmap = syscon_regmap_lookup_by_phandle(gphy_fw_list_np,
							   "lantiq,rcu");
	if (IS_ERR(priv->rcu_regmap))
		return PTR_ERR(priv->rcu_regmap);

	priv->gphy_fw = devm_kmalloc_array(dev, priv->num_gphy_fw,
					   sizeof(*priv->gphy_fw),
					   GFP_KERNEL | __GFP_ZERO);
	if (!priv->gphy_fw)
		return -ENOMEM;

	for_each_available_child_of_node(gphy_fw_list_np, gphy_fw_np) {
		err = gswip_gphy_fw_probe(priv, &priv->gphy_fw[i],
					  gphy_fw_np, i);
		if (err)
			goto remove_gphy;
		i++;
	}

	return 0;

remove_gphy:
	for (i = 0; i < priv->num_gphy_fw; i++)
		gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
	return err;
}

static int gswip_probe(struct platform_device *pdev)
{
	struct gswip_priv *priv;
	struct resource *gswip_res, *mdio_res, *mii_res;
	struct device_node *mdio_np, *gphy_fw_np;
	struct device *dev = &pdev->dev;
	int err;
	int i;
	u32 version;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	gswip_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	priv->gswip = devm_ioremap_resource(dev, gswip_res);
	if (IS_ERR(priv->gswip))
		return PTR_ERR(priv->gswip);

	mdio_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	priv->mdio = devm_ioremap_resource(dev, mdio_res);
	if (IS_ERR(priv->mdio))
		return PTR_ERR(priv->mdio);

	mii_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
	priv->mii = devm_ioremap_resource(dev, mii_res);
	if (IS_ERR(priv->mii))
		return PTR_ERR(priv->mii);

	priv->hw_info = of_device_get_match_data(dev);
	if (!priv->hw_info)
		return -EINVAL;

	priv->ds = dsa_switch_alloc(dev, priv->hw_info->max_ports);
	if (!priv->ds)
		return -ENOMEM;

	priv->ds->priv = priv;
	priv->ds->ops = &gswip_switch_ops;
	priv->dev = dev;
	version = gswip_switch_r(priv, GSWIP_VERSION);

	/* bring up the mdio bus */
	gphy_fw_np = of_get_compatible_child(dev->of_node, "lantiq,gphy-fw");
	if (gphy_fw_np) {
		err = gswip_gphy_fw_list(priv, gphy_fw_np, version);
		of_node_put(gphy_fw_np);
		if (err) {
			dev_err(dev, "gphy fw probe failed\n");
			return err;
		}
	}

	/* bring up the mdio bus */
	mdio_np = of_get_compatible_child(dev->of_node, "lantiq,xrx200-mdio");
	if (mdio_np) {
		err = gswip_mdio(priv, mdio_np);
		if (err) {
			dev_err(dev, "mdio probe failed\n");
			goto put_mdio_node;
		}
	}

	err = dsa_register_switch(priv->ds);
	if (err) {
		dev_err(dev, "dsa switch register failed: %i\n", err);
		goto mdio_bus;
	}
	if (!dsa_is_cpu_port(priv->ds, priv->hw_info->cpu_port)) {
		dev_err(dev, "wrong CPU port defined, HW only supports port: %i",
			priv->hw_info->cpu_port);
		err = -EINVAL;
		goto disable_switch;
	}

	platform_set_drvdata(pdev, priv);

	dev_info(dev, "probed GSWIP version %lx mod %lx\n",
		 (version & GSWIP_VERSION_REV_MASK) >> GSWIP_VERSION_REV_SHIFT,
		 (version & GSWIP_VERSION_MOD_MASK) >> GSWIP_VERSION_MOD_SHIFT);
	return 0;

disable_switch:
	gswip_mdio_mask(priv, GSWIP_MDIO_GLOB_ENABLE, 0, GSWIP_MDIO_GLOB);
	dsa_unregister_switch(priv->ds);
mdio_bus:
	if (mdio_np)
		mdiobus_unregister(priv->ds->slave_mii_bus);
put_mdio_node:
	of_node_put(mdio_np);
	for (i = 0; i < priv->num_gphy_fw; i++)
		gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
	return err;
}

static int gswip_remove(struct platform_device *pdev)
{
	struct gswip_priv *priv = platform_get_drvdata(pdev);
	int i;

	/* disable the switch */
	gswip_mdio_mask(priv, GSWIP_MDIO_GLOB_ENABLE, 0, GSWIP_MDIO_GLOB);

	dsa_unregister_switch(priv->ds);

	if (priv->ds->slave_mii_bus) {
		mdiobus_unregister(priv->ds->slave_mii_bus);
		of_node_put(priv->ds->slave_mii_bus->dev.of_node);
	}

	for (i = 0; i < priv->num_gphy_fw; i++)
		gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);

	return 0;
}

static const struct gswip_hw_info gswip_xrx200 = {
	.max_ports = 7,
	.cpu_port = 6,
};

static const struct of_device_id gswip_of_match[] = {
	{ .compatible = "lantiq,xrx200-gswip", .data = &gswip_xrx200 },
	{},
};
MODULE_DEVICE_TABLE(of, gswip_of_match);

static struct platform_driver gswip_driver = {
	.probe = gswip_probe,
	.remove = gswip_remove,
	.driver = {
		.name = "gswip",
		.of_match_table = gswip_of_match,
	},
};

module_platform_driver(gswip_driver);

MODULE_FIRMWARE("lantiq/xrx300_phy11g_a21.bin");
MODULE_FIRMWARE("lantiq/xrx300_phy22f_a21.bin");
MODULE_FIRMWARE("lantiq/xrx200_phy11g_a14.bin");
MODULE_FIRMWARE("lantiq/xrx200_phy11g_a22.bin");
MODULE_FIRMWARE("lantiq/xrx200_phy22f_a14.bin");
MODULE_FIRMWARE("lantiq/xrx200_phy22f_a22.bin");
MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
MODULE_DESCRIPTION("Lantiq / Intel GSWIP driver");
MODULE_LICENSE("GPL v2");