summaryrefslogtreecommitdiff
path: root/drivers/net/dsa/rtl8366rb.c
blob: ecc19bd5115f0c7ce91174167230773eae6d6e7d (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
// SPDX-License-Identifier: GPL-2.0
/* Realtek SMI subdriver for the Realtek RTL8366RB ethernet switch
 *
 * This is a sparsely documented chip, the only viable documentation seems
 * to be a patched up code drop from the vendor that appear in various
 * GPL source trees.
 *
 * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org>
 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
 * Copyright (C) 2010 Antti Seppälä <a.seppala@gmail.com>
 * Copyright (C) 2010 Roman Yeryomin <roman@advem.lv>
 * Copyright (C) 2011 Colin Leitner <colin.leitner@googlemail.com>
 */

#include <linux/bitops.h>
#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/of_irq.h>
#include <linux/regmap.h>

#include "realtek-smi-core.h"

#define RTL8366RB_PORT_NUM_CPU		5
#define RTL8366RB_NUM_PORTS		6
#define RTL8366RB_PHY_NO_MAX		4
#define RTL8366RB_PHY_ADDR_MAX		31

/* Switch Global Configuration register */
#define RTL8366RB_SGCR				0x0000
#define RTL8366RB_SGCR_EN_BC_STORM_CTRL		BIT(0)
#define RTL8366RB_SGCR_MAX_LENGTH(a)		((a) << 4)
#define RTL8366RB_SGCR_MAX_LENGTH_MASK		RTL8366RB_SGCR_MAX_LENGTH(0x3)
#define RTL8366RB_SGCR_MAX_LENGTH_1522		RTL8366RB_SGCR_MAX_LENGTH(0x0)
#define RTL8366RB_SGCR_MAX_LENGTH_1536		RTL8366RB_SGCR_MAX_LENGTH(0x1)
#define RTL8366RB_SGCR_MAX_LENGTH_1552		RTL8366RB_SGCR_MAX_LENGTH(0x2)
#define RTL8366RB_SGCR_MAX_LENGTH_16000		RTL8366RB_SGCR_MAX_LENGTH(0x3)
#define RTL8366RB_SGCR_EN_VLAN			BIT(13)
#define RTL8366RB_SGCR_EN_VLAN_4KTB		BIT(14)

/* Port Enable Control register */
#define RTL8366RB_PECR				0x0001

/* Switch per-port learning disablement register */
#define RTL8366RB_PORT_LEARNDIS_CTRL		0x0002

/* Security control, actually aging register */
#define RTL8366RB_SECURITY_CTRL			0x0003

#define RTL8366RB_SSCR2				0x0004
#define RTL8366RB_SSCR2_DROP_UNKNOWN_DA		BIT(0)

/* Port Mode Control registers */
#define RTL8366RB_PMC0				0x0005
#define RTL8366RB_PMC0_SPI			BIT(0)
#define RTL8366RB_PMC0_EN_AUTOLOAD		BIT(1)
#define RTL8366RB_PMC0_PROBE			BIT(2)
#define RTL8366RB_PMC0_DIS_BISR			BIT(3)
#define RTL8366RB_PMC0_ADCTEST			BIT(4)
#define RTL8366RB_PMC0_SRAM_DIAG		BIT(5)
#define RTL8366RB_PMC0_EN_SCAN			BIT(6)
#define RTL8366RB_PMC0_P4_IOMODE_SHIFT		7
#define RTL8366RB_PMC0_P4_IOMODE_MASK		GENMASK(9, 7)
#define RTL8366RB_PMC0_P5_IOMODE_SHIFT		10
#define RTL8366RB_PMC0_P5_IOMODE_MASK		GENMASK(12, 10)
#define RTL8366RB_PMC0_SDSMODE_SHIFT		13
#define RTL8366RB_PMC0_SDSMODE_MASK		GENMASK(15, 13)
#define RTL8366RB_PMC1				0x0006

/* Port Mirror Control Register */
#define RTL8366RB_PMCR				0x0007
#define RTL8366RB_PMCR_SOURCE_PORT(a)		(a)
#define RTL8366RB_PMCR_SOURCE_PORT_MASK		0x000f
#define RTL8366RB_PMCR_MONITOR_PORT(a)		((a) << 4)
#define RTL8366RB_PMCR_MONITOR_PORT_MASK	0x00f0
#define RTL8366RB_PMCR_MIRROR_RX		BIT(8)
#define RTL8366RB_PMCR_MIRROR_TX		BIT(9)
#define RTL8366RB_PMCR_MIRROR_SPC		BIT(10)
#define RTL8366RB_PMCR_MIRROR_ISO		BIT(11)

/* bits 0..7 = port 0, bits 8..15 = port 1 */
#define RTL8366RB_PAACR0		0x0010
/* bits 0..7 = port 2, bits 8..15 = port 3 */
#define RTL8366RB_PAACR1		0x0011
/* bits 0..7 = port 4, bits 8..15 = port 5 */
#define RTL8366RB_PAACR2		0x0012
#define RTL8366RB_PAACR_SPEED_10M	0
#define RTL8366RB_PAACR_SPEED_100M	1
#define RTL8366RB_PAACR_SPEED_1000M	2
#define RTL8366RB_PAACR_FULL_DUPLEX	BIT(2)
#define RTL8366RB_PAACR_LINK_UP		BIT(4)
#define RTL8366RB_PAACR_TX_PAUSE	BIT(5)
#define RTL8366RB_PAACR_RX_PAUSE	BIT(6)
#define RTL8366RB_PAACR_AN		BIT(7)

#define RTL8366RB_PAACR_CPU_PORT	(RTL8366RB_PAACR_SPEED_1000M | \
					 RTL8366RB_PAACR_FULL_DUPLEX | \
					 RTL8366RB_PAACR_LINK_UP | \
					 RTL8366RB_PAACR_TX_PAUSE | \
					 RTL8366RB_PAACR_RX_PAUSE)

/* bits 0..7 = port 0, bits 8..15 = port 1 */
#define RTL8366RB_PSTAT0		0x0014
/* bits 0..7 = port 2, bits 8..15 = port 3 */
#define RTL8366RB_PSTAT1		0x0015
/* bits 0..7 = port 4, bits 8..15 = port 5 */
#define RTL8366RB_PSTAT2		0x0016

#define RTL8366RB_POWER_SAVING_REG	0x0021

/* Spanning tree status (STP) control, two bits per port per FID */
#define RTL8366RB_STP_STATE_BASE	0x0050 /* 0x0050..0x0057 */
#define RTL8366RB_STP_STATE_DISABLED	0x0
#define RTL8366RB_STP_STATE_BLOCKING	0x1
#define RTL8366RB_STP_STATE_LEARNING	0x2
#define RTL8366RB_STP_STATE_FORWARDING	0x3
#define RTL8366RB_STP_MASK		GENMASK(1, 0)
#define RTL8366RB_STP_STATE(port, state) \
	((state) << ((port) * 2))
#define RTL8366RB_STP_STATE_MASK(port) \
	RTL8366RB_STP_STATE((port), RTL8366RB_STP_MASK)

/* CPU port control reg */
#define RTL8368RB_CPU_CTRL_REG		0x0061
#define RTL8368RB_CPU_PORTS_MSK		0x00FF
/* Disables inserting custom tag length/type 0x8899 */
#define RTL8368RB_CPU_NO_TAG		BIT(15)

#define RTL8366RB_SMAR0			0x0070 /* bits 0..15 */
#define RTL8366RB_SMAR1			0x0071 /* bits 16..31 */
#define RTL8366RB_SMAR2			0x0072 /* bits 32..47 */

#define RTL8366RB_RESET_CTRL_REG		0x0100
#define RTL8366RB_CHIP_CTRL_RESET_HW		BIT(0)
#define RTL8366RB_CHIP_CTRL_RESET_SW		BIT(1)

#define RTL8366RB_CHIP_ID_REG			0x0509
#define RTL8366RB_CHIP_ID_8366			0x5937
#define RTL8366RB_CHIP_VERSION_CTRL_REG		0x050A
#define RTL8366RB_CHIP_VERSION_MASK		0xf

/* PHY registers control */
#define RTL8366RB_PHY_ACCESS_CTRL_REG		0x8000
#define RTL8366RB_PHY_CTRL_READ			BIT(0)
#define RTL8366RB_PHY_CTRL_WRITE		0
#define RTL8366RB_PHY_ACCESS_BUSY_REG		0x8001
#define RTL8366RB_PHY_INT_BUSY			BIT(0)
#define RTL8366RB_PHY_EXT_BUSY			BIT(4)
#define RTL8366RB_PHY_ACCESS_DATA_REG		0x8002
#define RTL8366RB_PHY_EXT_CTRL_REG		0x8010
#define RTL8366RB_PHY_EXT_WRDATA_REG		0x8011
#define RTL8366RB_PHY_EXT_RDDATA_REG		0x8012

#define RTL8366RB_PHY_REG_MASK			0x1f
#define RTL8366RB_PHY_PAGE_OFFSET		5
#define RTL8366RB_PHY_PAGE_MASK			(0xf << 5)
#define RTL8366RB_PHY_NO_OFFSET			9
#define RTL8366RB_PHY_NO_MASK			(0x1f << 9)

/* VLAN Ingress Control Register 1, one bit per port.
 * bit 0 .. 5 will make the switch drop ingress frames without
 * VID such as untagged or priority-tagged frames for respective
 * port.
 * bit 6 .. 11 will make the switch drop ingress frames carrying
 * a C-tag with VID != 0 for respective port.
 */
#define RTL8366RB_VLAN_INGRESS_CTRL1_REG	0x037E
#define RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port)	(BIT((port)) | BIT((port) + 6))

/* VLAN Ingress Control Register 2, one bit per port.
 * bit0 .. bit5 will make the switch drop all ingress frames with
 * a VLAN classification that does not include the port is in its
 * member set.
 */
#define RTL8366RB_VLAN_INGRESS_CTRL2_REG	0x037f

/* LED control registers */
#define RTL8366RB_LED_BLINKRATE_REG		0x0430
#define RTL8366RB_LED_BLINKRATE_MASK		0x0007
#define RTL8366RB_LED_BLINKRATE_28MS		0x0000
#define RTL8366RB_LED_BLINKRATE_56MS		0x0001
#define RTL8366RB_LED_BLINKRATE_84MS		0x0002
#define RTL8366RB_LED_BLINKRATE_111MS		0x0003
#define RTL8366RB_LED_BLINKRATE_222MS		0x0004
#define RTL8366RB_LED_BLINKRATE_446MS		0x0005

#define RTL8366RB_LED_CTRL_REG			0x0431
#define RTL8366RB_LED_OFF			0x0
#define RTL8366RB_LED_DUP_COL			0x1
#define RTL8366RB_LED_LINK_ACT			0x2
#define RTL8366RB_LED_SPD1000			0x3
#define RTL8366RB_LED_SPD100			0x4
#define RTL8366RB_LED_SPD10			0x5
#define RTL8366RB_LED_SPD1000_ACT		0x6
#define RTL8366RB_LED_SPD100_ACT		0x7
#define RTL8366RB_LED_SPD10_ACT			0x8
#define RTL8366RB_LED_SPD100_10_ACT		0x9
#define RTL8366RB_LED_FIBER			0xa
#define RTL8366RB_LED_AN_FAULT			0xb
#define RTL8366RB_LED_LINK_RX			0xc
#define RTL8366RB_LED_LINK_TX			0xd
#define RTL8366RB_LED_MASTER			0xe
#define RTL8366RB_LED_FORCE			0xf
#define RTL8366RB_LED_0_1_CTRL_REG		0x0432
#define RTL8366RB_LED_1_OFFSET			6
#define RTL8366RB_LED_2_3_CTRL_REG		0x0433
#define RTL8366RB_LED_3_OFFSET			6

#define RTL8366RB_MIB_COUNT			33
#define RTL8366RB_GLOBAL_MIB_COUNT		1
#define RTL8366RB_MIB_COUNTER_PORT_OFFSET	0x0050
#define RTL8366RB_MIB_COUNTER_BASE		0x1000
#define RTL8366RB_MIB_CTRL_REG			0x13F0
#define RTL8366RB_MIB_CTRL_USER_MASK		0x0FFC
#define RTL8366RB_MIB_CTRL_BUSY_MASK		BIT(0)
#define RTL8366RB_MIB_CTRL_RESET_MASK		BIT(1)
#define RTL8366RB_MIB_CTRL_PORT_RESET(_p)	BIT(2 + (_p))
#define RTL8366RB_MIB_CTRL_GLOBAL_RESET		BIT(11)

#define RTL8366RB_PORT_VLAN_CTRL_BASE		0x0063
#define RTL8366RB_PORT_VLAN_CTRL_REG(_p)  \
		(RTL8366RB_PORT_VLAN_CTRL_BASE + (_p) / 4)
#define RTL8366RB_PORT_VLAN_CTRL_MASK		0xf
#define RTL8366RB_PORT_VLAN_CTRL_SHIFT(_p)	(4 * ((_p) % 4))

#define RTL8366RB_VLAN_TABLE_READ_BASE		0x018C
#define RTL8366RB_VLAN_TABLE_WRITE_BASE		0x0185

#define RTL8366RB_TABLE_ACCESS_CTRL_REG		0x0180
#define RTL8366RB_TABLE_VLAN_READ_CTRL		0x0E01
#define RTL8366RB_TABLE_VLAN_WRITE_CTRL		0x0F01

#define RTL8366RB_VLAN_MC_BASE(_x)		(0x0020 + (_x) * 3)

#define RTL8366RB_PORT_LINK_STATUS_BASE		0x0014
#define RTL8366RB_PORT_STATUS_SPEED_MASK	0x0003
#define RTL8366RB_PORT_STATUS_DUPLEX_MASK	0x0004
#define RTL8366RB_PORT_STATUS_LINK_MASK		0x0010
#define RTL8366RB_PORT_STATUS_TXPAUSE_MASK	0x0020
#define RTL8366RB_PORT_STATUS_RXPAUSE_MASK	0x0040
#define RTL8366RB_PORT_STATUS_AN_MASK		0x0080

#define RTL8366RB_NUM_VLANS		16
#define RTL8366RB_NUM_LEDGROUPS		4
#define RTL8366RB_NUM_VIDS		4096
#define RTL8366RB_PRIORITYMAX		7
#define RTL8366RB_NUM_FIDS		8
#define RTL8366RB_FIDMAX		7

#define RTL8366RB_PORT_1		BIT(0) /* In userspace port 0 */
#define RTL8366RB_PORT_2		BIT(1) /* In userspace port 1 */
#define RTL8366RB_PORT_3		BIT(2) /* In userspace port 2 */
#define RTL8366RB_PORT_4		BIT(3) /* In userspace port 3 */
#define RTL8366RB_PORT_5		BIT(4) /* In userspace port 4 */

#define RTL8366RB_PORT_CPU		BIT(5) /* CPU port */

#define RTL8366RB_PORT_ALL		(RTL8366RB_PORT_1 |	\
					 RTL8366RB_PORT_2 |	\
					 RTL8366RB_PORT_3 |	\
					 RTL8366RB_PORT_4 |	\
					 RTL8366RB_PORT_5 |	\
					 RTL8366RB_PORT_CPU)

#define RTL8366RB_PORT_ALL_BUT_CPU	(RTL8366RB_PORT_1 |	\
					 RTL8366RB_PORT_2 |	\
					 RTL8366RB_PORT_3 |	\
					 RTL8366RB_PORT_4 |	\
					 RTL8366RB_PORT_5)

#define RTL8366RB_PORT_ALL_EXTERNAL	(RTL8366RB_PORT_1 |	\
					 RTL8366RB_PORT_2 |	\
					 RTL8366RB_PORT_3 |	\
					 RTL8366RB_PORT_4)

#define RTL8366RB_PORT_ALL_INTERNAL	 RTL8366RB_PORT_CPU

/* First configuration word per member config, VID and prio */
#define RTL8366RB_VLAN_VID_MASK		0xfff
#define RTL8366RB_VLAN_PRIORITY_SHIFT	12
#define RTL8366RB_VLAN_PRIORITY_MASK	0x7
/* Second configuration word per member config, member and untagged */
#define RTL8366RB_VLAN_UNTAG_SHIFT	8
#define RTL8366RB_VLAN_UNTAG_MASK	0xff
#define RTL8366RB_VLAN_MEMBER_MASK	0xff
/* Third config word per member config, STAG currently unused */
#define RTL8366RB_VLAN_STAG_MBR_MASK	0xff
#define RTL8366RB_VLAN_STAG_MBR_SHIFT	8
#define RTL8366RB_VLAN_STAG_IDX_MASK	0x7
#define RTL8366RB_VLAN_STAG_IDX_SHIFT	5
#define RTL8366RB_VLAN_FID_MASK		0x7

/* Port ingress bandwidth control */
#define RTL8366RB_IB_BASE		0x0200
#define RTL8366RB_IB_REG(pnum)		(RTL8366RB_IB_BASE + (pnum))
#define RTL8366RB_IB_BDTH_MASK		0x3fff
#define RTL8366RB_IB_PREIFG		BIT(14)

/* Port egress bandwidth control */
#define RTL8366RB_EB_BASE		0x02d1
#define RTL8366RB_EB_REG(pnum)		(RTL8366RB_EB_BASE + (pnum))
#define RTL8366RB_EB_BDTH_MASK		0x3fff
#define RTL8366RB_EB_PREIFG_REG		0x02f8
#define RTL8366RB_EB_PREIFG		BIT(9)

#define RTL8366RB_BDTH_SW_MAX		1048512 /* 1048576? */
#define RTL8366RB_BDTH_UNIT		64
#define RTL8366RB_BDTH_REG_DEFAULT	16383

/* QOS */
#define RTL8366RB_QOS			BIT(15)
/* Include/Exclude Preamble and IFG (20 bytes). 0:Exclude, 1:Include. */
#define RTL8366RB_QOS_DEFAULT_PREIFG	1

/* Interrupt handling */
#define RTL8366RB_INTERRUPT_CONTROL_REG	0x0440
#define RTL8366RB_INTERRUPT_POLARITY	BIT(0)
#define RTL8366RB_P4_RGMII_LED		BIT(2)
#define RTL8366RB_INTERRUPT_MASK_REG	0x0441
#define RTL8366RB_INTERRUPT_LINK_CHGALL	GENMASK(11, 0)
#define RTL8366RB_INTERRUPT_ACLEXCEED	BIT(8)
#define RTL8366RB_INTERRUPT_STORMEXCEED	BIT(9)
#define RTL8366RB_INTERRUPT_P4_FIBER	BIT(12)
#define RTL8366RB_INTERRUPT_P4_UTP	BIT(13)
#define RTL8366RB_INTERRUPT_VALID	(RTL8366RB_INTERRUPT_LINK_CHGALL | \
					 RTL8366RB_INTERRUPT_ACLEXCEED | \
					 RTL8366RB_INTERRUPT_STORMEXCEED | \
					 RTL8366RB_INTERRUPT_P4_FIBER | \
					 RTL8366RB_INTERRUPT_P4_UTP)
#define RTL8366RB_INTERRUPT_STATUS_REG	0x0442
#define RTL8366RB_NUM_INTERRUPT		14 /* 0..13 */

/* Port isolation registers */
#define RTL8366RB_PORT_ISO_BASE		0x0F08
#define RTL8366RB_PORT_ISO(pnum)	(RTL8366RB_PORT_ISO_BASE + (pnum))
#define RTL8366RB_PORT_ISO_EN		BIT(0)
#define RTL8366RB_PORT_ISO_PORTS_MASK	GENMASK(7, 1)
#define RTL8366RB_PORT_ISO_PORTS(pmask)	((pmask) << 1)

/* bits 0..5 enable force when cleared */
#define RTL8366RB_MAC_FORCE_CTRL_REG	0x0F11

#define RTL8366RB_OAM_PARSER_REG	0x0F14
#define RTL8366RB_OAM_MULTIPLEXER_REG	0x0F15

#define RTL8366RB_GREEN_FEATURE_REG	0x0F51
#define RTL8366RB_GREEN_FEATURE_MSK	0x0007
#define RTL8366RB_GREEN_FEATURE_TX	BIT(0)
#define RTL8366RB_GREEN_FEATURE_RX	BIT(2)

/**
 * struct rtl8366rb - RTL8366RB-specific data
 * @max_mtu: per-port max MTU setting
 * @pvid_enabled: if PVID is set for respective port
 */
struct rtl8366rb {
	unsigned int max_mtu[RTL8366RB_NUM_PORTS];
	bool pvid_enabled[RTL8366RB_NUM_PORTS];
};

static struct rtl8366_mib_counter rtl8366rb_mib_counters[] = {
	{ 0,  0, 4, "IfInOctets"				},
	{ 0,  4, 4, "EtherStatsOctets"				},
	{ 0,  8, 2, "EtherStatsUnderSizePkts"			},
	{ 0, 10, 2, "EtherFragments"				},
	{ 0, 12, 2, "EtherStatsPkts64Octets"			},
	{ 0, 14, 2, "EtherStatsPkts65to127Octets"		},
	{ 0, 16, 2, "EtherStatsPkts128to255Octets"		},
	{ 0, 18, 2, "EtherStatsPkts256to511Octets"		},
	{ 0, 20, 2, "EtherStatsPkts512to1023Octets"		},
	{ 0, 22, 2, "EtherStatsPkts1024to1518Octets"		},
	{ 0, 24, 2, "EtherOversizeStats"			},
	{ 0, 26, 2, "EtherStatsJabbers"				},
	{ 0, 28, 2, "IfInUcastPkts"				},
	{ 0, 30, 2, "EtherStatsMulticastPkts"			},
	{ 0, 32, 2, "EtherStatsBroadcastPkts"			},
	{ 0, 34, 2, "EtherStatsDropEvents"			},
	{ 0, 36, 2, "Dot3StatsFCSErrors"			},
	{ 0, 38, 2, "Dot3StatsSymbolErrors"			},
	{ 0, 40, 2, "Dot3InPauseFrames"				},
	{ 0, 42, 2, "Dot3ControlInUnknownOpcodes"		},
	{ 0, 44, 4, "IfOutOctets"				},
	{ 0, 48, 2, "Dot3StatsSingleCollisionFrames"		},
	{ 0, 50, 2, "Dot3StatMultipleCollisionFrames"		},
	{ 0, 52, 2, "Dot3sDeferredTransmissions"		},
	{ 0, 54, 2, "Dot3StatsLateCollisions"			},
	{ 0, 56, 2, "EtherStatsCollisions"			},
	{ 0, 58, 2, "Dot3StatsExcessiveCollisions"		},
	{ 0, 60, 2, "Dot3OutPauseFrames"			},
	{ 0, 62, 2, "Dot1dBasePortDelayExceededDiscards"	},
	{ 0, 64, 2, "Dot1dTpPortInDiscards"			},
	{ 0, 66, 2, "IfOutUcastPkts"				},
	{ 0, 68, 2, "IfOutMulticastPkts"			},
	{ 0, 70, 2, "IfOutBroadcastPkts"			},
};

static int rtl8366rb_get_mib_counter(struct realtek_smi *smi,
				     int port,
				     struct rtl8366_mib_counter *mib,
				     u64 *mibvalue)
{
	u32 addr, val;
	int ret;
	int i;

	addr = RTL8366RB_MIB_COUNTER_BASE +
		RTL8366RB_MIB_COUNTER_PORT_OFFSET * (port) +
		mib->offset;

	/* Writing access counter address first
	 * then ASIC will prepare 64bits counter wait for being retrived
	 */
	ret = regmap_write(smi->map, addr, 0); /* Write whatever */
	if (ret)
		return ret;

	/* Read MIB control register */
	ret = regmap_read(smi->map, RTL8366RB_MIB_CTRL_REG, &val);
	if (ret)
		return -EIO;

	if (val & RTL8366RB_MIB_CTRL_BUSY_MASK)
		return -EBUSY;

	if (val & RTL8366RB_MIB_CTRL_RESET_MASK)
		return -EIO;

	/* Read each individual MIB 16 bits at the time */
	*mibvalue = 0;
	for (i = mib->length; i > 0; i--) {
		ret = regmap_read(smi->map, addr + (i - 1), &val);
		if (ret)
			return ret;
		*mibvalue = (*mibvalue << 16) | (val & 0xFFFF);
	}
	return 0;
}

static u32 rtl8366rb_get_irqmask(struct irq_data *d)
{
	int line = irqd_to_hwirq(d);
	u32 val;

	/* For line interrupts we combine link down in bits
	 * 6..11 with link up in bits 0..5 into one interrupt.
	 */
	if (line < 12)
		val = BIT(line) | BIT(line + 6);
	else
		val = BIT(line);
	return val;
}

static void rtl8366rb_mask_irq(struct irq_data *d)
{
	struct realtek_smi *smi = irq_data_get_irq_chip_data(d);
	int ret;

	ret = regmap_update_bits(smi->map, RTL8366RB_INTERRUPT_MASK_REG,
				 rtl8366rb_get_irqmask(d), 0);
	if (ret)
		dev_err(smi->dev, "could not mask IRQ\n");
}

static void rtl8366rb_unmask_irq(struct irq_data *d)
{
	struct realtek_smi *smi = irq_data_get_irq_chip_data(d);
	int ret;

	ret = regmap_update_bits(smi->map, RTL8366RB_INTERRUPT_MASK_REG,
				 rtl8366rb_get_irqmask(d),
				 rtl8366rb_get_irqmask(d));
	if (ret)
		dev_err(smi->dev, "could not unmask IRQ\n");
}

static irqreturn_t rtl8366rb_irq(int irq, void *data)
{
	struct realtek_smi *smi = data;
	u32 stat;
	int ret;

	/* This clears the IRQ status register */
	ret = regmap_read(smi->map, RTL8366RB_INTERRUPT_STATUS_REG,
			  &stat);
	if (ret) {
		dev_err(smi->dev, "can't read interrupt status\n");
		return IRQ_NONE;
	}
	stat &= RTL8366RB_INTERRUPT_VALID;
	if (!stat)
		return IRQ_NONE;
	while (stat) {
		int line = __ffs(stat);
		int child_irq;

		stat &= ~BIT(line);
		/* For line interrupts we combine link down in bits
		 * 6..11 with link up in bits 0..5 into one interrupt.
		 */
		if (line < 12 && line > 5)
			line -= 5;
		child_irq = irq_find_mapping(smi->irqdomain, line);
		handle_nested_irq(child_irq);
	}
	return IRQ_HANDLED;
}

static struct irq_chip rtl8366rb_irq_chip = {
	.name = "RTL8366RB",
	.irq_mask = rtl8366rb_mask_irq,
	.irq_unmask = rtl8366rb_unmask_irq,
};

static int rtl8366rb_irq_map(struct irq_domain *domain, unsigned int irq,
			     irq_hw_number_t hwirq)
{
	irq_set_chip_data(irq, domain->host_data);
	irq_set_chip_and_handler(irq, &rtl8366rb_irq_chip, handle_simple_irq);
	irq_set_nested_thread(irq, 1);
	irq_set_noprobe(irq);

	return 0;
}

static void rtl8366rb_irq_unmap(struct irq_domain *d, unsigned int irq)
{
	irq_set_nested_thread(irq, 0);
	irq_set_chip_and_handler(irq, NULL, NULL);
	irq_set_chip_data(irq, NULL);
}

static const struct irq_domain_ops rtl8366rb_irqdomain_ops = {
	.map = rtl8366rb_irq_map,
	.unmap = rtl8366rb_irq_unmap,
	.xlate  = irq_domain_xlate_onecell,
};

static int rtl8366rb_setup_cascaded_irq(struct realtek_smi *smi)
{
	struct device_node *intc;
	unsigned long irq_trig;
	int irq;
	int ret;
	u32 val;
	int i;

	intc = of_get_child_by_name(smi->dev->of_node, "interrupt-controller");
	if (!intc) {
		dev_err(smi->dev, "missing child interrupt-controller node\n");
		return -EINVAL;
	}
	/* RB8366RB IRQs cascade off this one */
	irq = of_irq_get(intc, 0);
	if (irq <= 0) {
		dev_err(smi->dev, "failed to get parent IRQ\n");
		ret = irq ? irq : -EINVAL;
		goto out_put_node;
	}

	/* This clears the IRQ status register */
	ret = regmap_read(smi->map, RTL8366RB_INTERRUPT_STATUS_REG,
			  &val);
	if (ret) {
		dev_err(smi->dev, "can't read interrupt status\n");
		goto out_put_node;
	}

	/* Fetch IRQ edge information from the descriptor */
	irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
	switch (irq_trig) {
	case IRQF_TRIGGER_RISING:
	case IRQF_TRIGGER_HIGH:
		dev_info(smi->dev, "active high/rising IRQ\n");
		val = 0;
		break;
	case IRQF_TRIGGER_FALLING:
	case IRQF_TRIGGER_LOW:
		dev_info(smi->dev, "active low/falling IRQ\n");
		val = RTL8366RB_INTERRUPT_POLARITY;
		break;
	}
	ret = regmap_update_bits(smi->map, RTL8366RB_INTERRUPT_CONTROL_REG,
				 RTL8366RB_INTERRUPT_POLARITY,
				 val);
	if (ret) {
		dev_err(smi->dev, "could not configure IRQ polarity\n");
		goto out_put_node;
	}

	ret = devm_request_threaded_irq(smi->dev, irq, NULL,
					rtl8366rb_irq, IRQF_ONESHOT,
					"RTL8366RB", smi);
	if (ret) {
		dev_err(smi->dev, "unable to request irq: %d\n", ret);
		goto out_put_node;
	}
	smi->irqdomain = irq_domain_add_linear(intc,
					       RTL8366RB_NUM_INTERRUPT,
					       &rtl8366rb_irqdomain_ops,
					       smi);
	if (!smi->irqdomain) {
		dev_err(smi->dev, "failed to create IRQ domain\n");
		ret = -EINVAL;
		goto out_put_node;
	}
	for (i = 0; i < smi->num_ports; i++)
		irq_set_parent(irq_create_mapping(smi->irqdomain, i), irq);

out_put_node:
	of_node_put(intc);
	return ret;
}

static int rtl8366rb_set_addr(struct realtek_smi *smi)
{
	u8 addr[ETH_ALEN];
	u16 val;
	int ret;

	eth_random_addr(addr);

	dev_info(smi->dev, "set MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
		 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
	val = addr[0] << 8 | addr[1];
	ret = regmap_write(smi->map, RTL8366RB_SMAR0, val);
	if (ret)
		return ret;
	val = addr[2] << 8 | addr[3];
	ret = regmap_write(smi->map, RTL8366RB_SMAR1, val);
	if (ret)
		return ret;
	val = addr[4] << 8 | addr[5];
	ret = regmap_write(smi->map, RTL8366RB_SMAR2, val);
	if (ret)
		return ret;

	return 0;
}

/* Found in a vendor driver */

/* Struct for handling the jam tables' entries */
struct rtl8366rb_jam_tbl_entry {
	u16 reg;
	u16 val;
};

/* For the "version 0" early silicon, appear in most source releases */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_0[] = {
	{0x000B, 0x0001}, {0x03A6, 0x0100}, {0x03A7, 0x0001}, {0x02D1, 0x3FFF},
	{0x02D2, 0x3FFF}, {0x02D3, 0x3FFF}, {0x02D4, 0x3FFF}, {0x02D5, 0x3FFF},
	{0x02D6, 0x3FFF}, {0x02D7, 0x3FFF}, {0x02D8, 0x3FFF}, {0x022B, 0x0688},
	{0x022C, 0x0FAC}, {0x03D0, 0x4688}, {0x03D1, 0x01F5}, {0x0000, 0x0830},
	{0x02F9, 0x0200}, {0x02F7, 0x7FFF}, {0x02F8, 0x03FF}, {0x0080, 0x03E8},
	{0x0081, 0x00CE}, {0x0082, 0x00DA}, {0x0083, 0x0230}, {0xBE0F, 0x2000},
	{0x0231, 0x422A}, {0x0232, 0x422A}, {0x0233, 0x422A}, {0x0234, 0x422A},
	{0x0235, 0x422A}, {0x0236, 0x422A}, {0x0237, 0x422A}, {0x0238, 0x422A},
	{0x0239, 0x422A}, {0x023A, 0x422A}, {0x023B, 0x422A}, {0x023C, 0x422A},
	{0x023D, 0x422A}, {0x023E, 0x422A}, {0x023F, 0x422A}, {0x0240, 0x422A},
	{0x0241, 0x422A}, {0x0242, 0x422A}, {0x0243, 0x422A}, {0x0244, 0x422A},
	{0x0245, 0x422A}, {0x0246, 0x422A}, {0x0247, 0x422A}, {0x0248, 0x422A},
	{0x0249, 0x0146}, {0x024A, 0x0146}, {0x024B, 0x0146}, {0xBE03, 0xC961},
	{0x024D, 0x0146}, {0x024E, 0x0146}, {0x024F, 0x0146}, {0x0250, 0x0146},
	{0xBE64, 0x0226}, {0x0252, 0x0146}, {0x0253, 0x0146}, {0x024C, 0x0146},
	{0x0251, 0x0146}, {0x0254, 0x0146}, {0xBE62, 0x3FD0}, {0x0084, 0x0320},
	{0x0255, 0x0146}, {0x0256, 0x0146}, {0x0257, 0x0146}, {0x0258, 0x0146},
	{0x0259, 0x0146}, {0x025A, 0x0146}, {0x025B, 0x0146}, {0x025C, 0x0146},
	{0x025D, 0x0146}, {0x025E, 0x0146}, {0x025F, 0x0146}, {0x0260, 0x0146},
	{0x0261, 0xA23F}, {0x0262, 0x0294}, {0x0263, 0xA23F}, {0x0264, 0x0294},
	{0x0265, 0xA23F}, {0x0266, 0x0294}, {0x0267, 0xA23F}, {0x0268, 0x0294},
	{0x0269, 0xA23F}, {0x026A, 0x0294}, {0x026B, 0xA23F}, {0x026C, 0x0294},
	{0x026D, 0xA23F}, {0x026E, 0x0294}, {0x026F, 0xA23F}, {0x0270, 0x0294},
	{0x02F5, 0x0048}, {0xBE09, 0x0E00}, {0xBE1E, 0x0FA0}, {0xBE14, 0x8448},
	{0xBE15, 0x1007}, {0xBE4A, 0xA284}, {0xC454, 0x3F0B}, {0xC474, 0x3F0B},
	{0xBE48, 0x3672}, {0xBE4B, 0x17A7}, {0xBE4C, 0x0B15}, {0xBE52, 0x0EDD},
	{0xBE49, 0x8C00}, {0xBE5B, 0x785C}, {0xBE5C, 0x785C}, {0xBE5D, 0x785C},
	{0xBE61, 0x368A}, {0xBE63, 0x9B84}, {0xC456, 0xCC13}, {0xC476, 0xCC13},
	{0xBE65, 0x307D}, {0xBE6D, 0x0005}, {0xBE6E, 0xE120}, {0xBE2E, 0x7BAF},
};

/* This v1 init sequence is from Belkin F5D8235 U-Boot release */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_1[] = {
	{0x0000, 0x0830}, {0x0001, 0x8000}, {0x0400, 0x8130}, {0xBE78, 0x3C3C},
	{0x0431, 0x5432}, {0xBE37, 0x0CE4}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0},
	{0xC44C, 0x1585}, {0xC44C, 0x1185}, {0xC44C, 0x1585}, {0xC46C, 0x1585},
	{0xC46C, 0x1185}, {0xC46C, 0x1585}, {0xC451, 0x2135}, {0xC471, 0x2135},
	{0xBE10, 0x8140}, {0xBE15, 0x0007}, {0xBE6E, 0xE120}, {0xBE69, 0xD20F},
	{0xBE6B, 0x0320}, {0xBE24, 0xB000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF20},
	{0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800}, {0xBE24, 0x0000},
	{0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60}, {0xBE21, 0x0140},
	{0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000}, {0xBE2E, 0x7B7A},
	{0xBE36, 0x0CE4}, {0x02F5, 0x0048}, {0xBE77, 0x2940}, {0x000A, 0x83E0},
	{0xBE79, 0x3C3C}, {0xBE00, 0x1340},
};

/* This v2 init sequence is from Belkin F5D8235 U-Boot release */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_2[] = {
	{0x0450, 0x0000}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432},
	{0xC44F, 0x6250}, {0xC46F, 0x6250}, {0xC456, 0x0C14}, {0xC476, 0x0C14},
	{0xC44C, 0x1C85}, {0xC44C, 0x1885}, {0xC44C, 0x1C85}, {0xC46C, 0x1C85},
	{0xC46C, 0x1885}, {0xC46C, 0x1C85}, {0xC44C, 0x0885}, {0xC44C, 0x0881},
	{0xC44C, 0x0885}, {0xC46C, 0x0885}, {0xC46C, 0x0881}, {0xC46C, 0x0885},
	{0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001},
	{0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6E, 0x0320},
	{0xBE77, 0x2940}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120},
	{0x8000, 0x0001}, {0xBE15, 0x1007}, {0x8000, 0x0000}, {0xBE15, 0x1007},
	{0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160}, {0xBE10, 0x8140},
	{0xBE00, 0x1340}, {0x0F51, 0x0010},
};

/* Appears in a DDWRT code dump */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_ver_3[] = {
	{0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0431, 0x5432},
	{0x0F51, 0x0017}, {0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0},
	{0xC456, 0x0C14}, {0xC476, 0x0C14}, {0xC454, 0x3F8B}, {0xC474, 0x3F8B},
	{0xC450, 0x2071}, {0xC470, 0x2071}, {0xC451, 0x226B}, {0xC471, 0x226B},
	{0xC452, 0xA293}, {0xC472, 0xA293}, {0xC44C, 0x1585}, {0xC44C, 0x1185},
	{0xC44C, 0x1585}, {0xC46C, 0x1585}, {0xC46C, 0x1185}, {0xC46C, 0x1585},
	{0xC44C, 0x0185}, {0xC44C, 0x0181}, {0xC44C, 0x0185}, {0xC46C, 0x0185},
	{0xC46C, 0x0181}, {0xC46C, 0x0185}, {0xBE24, 0xB000}, {0xBE23, 0xFF51},
	{0xBE22, 0xDF20}, {0xBE21, 0x0140}, {0xBE20, 0x00BB}, {0xBE24, 0xB800},
	{0xBE24, 0x0000}, {0xBE24, 0x7000}, {0xBE23, 0xFF51}, {0xBE22, 0xDF60},
	{0xBE21, 0x0140}, {0xBE20, 0x0077}, {0xBE24, 0x7800}, {0xBE24, 0x0000},
	{0xBE2E, 0x7BA7}, {0xBE36, 0x1000}, {0xBE37, 0x1000}, {0x8000, 0x0001},
	{0xBE69, 0xD50F}, {0x8000, 0x0000}, {0xBE69, 0xD50F}, {0xBE6B, 0x0320},
	{0xBE77, 0x2800}, {0xBE78, 0x3C3C}, {0xBE79, 0x3C3C}, {0xBE6E, 0xE120},
	{0x8000, 0x0001}, {0xBE10, 0x8140}, {0x8000, 0x0000}, {0xBE10, 0x8140},
	{0xBE15, 0x1007}, {0xBE14, 0x0448}, {0xBE1E, 0x00A0}, {0xBE10, 0x8160},
	{0xBE10, 0x8140}, {0xBE00, 0x1340}, {0x0450, 0x0000}, {0x0401, 0x0000},
};

/* Belkin F5D8235 v1, "belkin,f5d8235-v1" */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_f5d8235[] = {
	{0x0242, 0x02BF}, {0x0245, 0x02BF}, {0x0248, 0x02BF}, {0x024B, 0x02BF},
	{0x024E, 0x02BF}, {0x0251, 0x02BF}, {0x0254, 0x0A3F}, {0x0256, 0x0A3F},
	{0x0258, 0x0A3F}, {0x025A, 0x0A3F}, {0x025C, 0x0A3F}, {0x025E, 0x0A3F},
	{0x0263, 0x007C}, {0x0100, 0x0004}, {0xBE5B, 0x3500}, {0x800E, 0x200F},
	{0xBE1D, 0x0F00}, {0x8001, 0x5011}, {0x800A, 0xA2F4}, {0x800B, 0x17A3},
	{0xBE4B, 0x17A3}, {0xBE41, 0x5011}, {0xBE17, 0x2100}, {0x8000, 0x8304},
	{0xBE40, 0x8304}, {0xBE4A, 0xA2F4}, {0x800C, 0xA8D5}, {0x8014, 0x5500},
	{0x8015, 0x0004}, {0xBE4C, 0xA8D5}, {0xBE59, 0x0008}, {0xBE09, 0x0E00},
	{0xBE36, 0x1036}, {0xBE37, 0x1036}, {0x800D, 0x00FF}, {0xBE4D, 0x00FF},
};

/* DGN3500, "netgear,dgn3500", "netgear,dgn3500b" */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_init_jam_dgn3500[] = {
	{0x0000, 0x0830}, {0x0400, 0x8130}, {0x000A, 0x83ED}, {0x0F51, 0x0017},
	{0x02F5, 0x0048}, {0x02FA, 0xFFDF}, {0x02FB, 0xFFE0}, {0x0450, 0x0000},
	{0x0401, 0x0000}, {0x0431, 0x0960},
};

/* This jam table activates "green ethernet", which means low power mode
 * and is claimed to detect the cable length and not use more power than
 * necessary, and the ports should enter power saving mode 10 seconds after
 * a cable is disconnected. Seems to always be the same.
 */
static const struct rtl8366rb_jam_tbl_entry rtl8366rb_green_jam[] = {
	{0xBE78, 0x323C}, {0xBE77, 0x5000}, {0xBE2E, 0x7BA7},
	{0xBE59, 0x3459}, {0xBE5A, 0x745A}, {0xBE5B, 0x785C},
	{0xBE5C, 0x785C}, {0xBE6E, 0xE120}, {0xBE79, 0x323C},
};

/* Function that jams the tables in the proper registers */
static int rtl8366rb_jam_table(const struct rtl8366rb_jam_tbl_entry *jam_table,
			       int jam_size, struct realtek_smi *smi,
			       bool write_dbg)
{
	u32 val;
	int ret;
	int i;

	for (i = 0; i < jam_size; i++) {
		if ((jam_table[i].reg & 0xBE00) == 0xBE00) {
			ret = regmap_read(smi->map,
					  RTL8366RB_PHY_ACCESS_BUSY_REG,
					  &val);
			if (ret)
				return ret;
			if (!(val & RTL8366RB_PHY_INT_BUSY)) {
				ret = regmap_write(smi->map,
						RTL8366RB_PHY_ACCESS_CTRL_REG,
						RTL8366RB_PHY_CTRL_WRITE);
				if (ret)
					return ret;
			}
		}
		if (write_dbg)
			dev_dbg(smi->dev, "jam %04x into register %04x\n",
				jam_table[i].val,
				jam_table[i].reg);
		ret = regmap_write(smi->map,
				   jam_table[i].reg,
				   jam_table[i].val);
		if (ret)
			return ret;
	}
	return 0;
}

static int rtl8366rb_setup(struct dsa_switch *ds)
{
	struct realtek_smi *smi = ds->priv;
	const struct rtl8366rb_jam_tbl_entry *jam_table;
	struct rtl8366rb *rb;
	u32 chip_ver = 0;
	u32 chip_id = 0;
	int jam_size;
	u32 val;
	int ret;
	int i;

	rb = smi->chip_data;

	ret = regmap_read(smi->map, RTL8366RB_CHIP_ID_REG, &chip_id);
	if (ret) {
		dev_err(smi->dev, "unable to read chip id\n");
		return ret;
	}

	switch (chip_id) {
	case RTL8366RB_CHIP_ID_8366:
		break;
	default:
		dev_err(smi->dev, "unknown chip id (%04x)\n", chip_id);
		return -ENODEV;
	}

	ret = regmap_read(smi->map, RTL8366RB_CHIP_VERSION_CTRL_REG,
			  &chip_ver);
	if (ret) {
		dev_err(smi->dev, "unable to read chip version\n");
		return ret;
	}

	dev_info(smi->dev, "RTL%04x ver %u chip found\n",
		 chip_id, chip_ver & RTL8366RB_CHIP_VERSION_MASK);

	/* Do the init dance using the right jam table */
	switch (chip_ver) {
	case 0:
		jam_table = rtl8366rb_init_jam_ver_0;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_0);
		break;
	case 1:
		jam_table = rtl8366rb_init_jam_ver_1;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_1);
		break;
	case 2:
		jam_table = rtl8366rb_init_jam_ver_2;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_2);
		break;
	default:
		jam_table = rtl8366rb_init_jam_ver_3;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_ver_3);
		break;
	}

	/* Special jam tables for special routers
	 * TODO: are these necessary? Maintainers, please test
	 * without them, using just the off-the-shelf tables.
	 */
	if (of_machine_is_compatible("belkin,f5d8235-v1")) {
		jam_table = rtl8366rb_init_jam_f5d8235;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_f5d8235);
	}
	if (of_machine_is_compatible("netgear,dgn3500") ||
	    of_machine_is_compatible("netgear,dgn3500b")) {
		jam_table = rtl8366rb_init_jam_dgn3500;
		jam_size = ARRAY_SIZE(rtl8366rb_init_jam_dgn3500);
	}

	ret = rtl8366rb_jam_table(jam_table, jam_size, smi, true);
	if (ret)
		return ret;

	/* Isolate all user ports so they can only send packets to itself and the CPU port */
	for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
		ret = regmap_write(smi->map, RTL8366RB_PORT_ISO(i),
				   RTL8366RB_PORT_ISO_PORTS(BIT(RTL8366RB_PORT_NUM_CPU)) |
				   RTL8366RB_PORT_ISO_EN);
		if (ret)
			return ret;
	}
	/* CPU port can send packets to all ports */
	ret = regmap_write(smi->map, RTL8366RB_PORT_ISO(RTL8366RB_PORT_NUM_CPU),
			   RTL8366RB_PORT_ISO_PORTS(dsa_user_ports(ds)) |
			   RTL8366RB_PORT_ISO_EN);
	if (ret)
		return ret;

	/* Set up the "green ethernet" feature */
	ret = rtl8366rb_jam_table(rtl8366rb_green_jam,
				  ARRAY_SIZE(rtl8366rb_green_jam), smi, false);
	if (ret)
		return ret;

	ret = regmap_write(smi->map,
			   RTL8366RB_GREEN_FEATURE_REG,
			   (chip_ver == 1) ? 0x0007 : 0x0003);
	if (ret)
		return ret;

	/* Vendor driver sets 0x240 in registers 0xc and 0xd (undocumented) */
	ret = regmap_write(smi->map, 0x0c, 0x240);
	if (ret)
		return ret;
	ret = regmap_write(smi->map, 0x0d, 0x240);
	if (ret)
		return ret;

	/* Set some random MAC address */
	ret = rtl8366rb_set_addr(smi);
	if (ret)
		return ret;

	/* Enable CPU port with custom DSA tag 8899.
	 *
	 * If you set RTL8368RB_CPU_NO_TAG (bit 15) in this registers
	 * the custom tag is turned off.
	 */
	ret = regmap_update_bits(smi->map, RTL8368RB_CPU_CTRL_REG,
				 0xFFFF,
				 BIT(smi->cpu_port));
	if (ret)
		return ret;

	/* Make sure we default-enable the fixed CPU port */
	ret = regmap_update_bits(smi->map, RTL8366RB_PECR,
				 BIT(smi->cpu_port),
				 0);
	if (ret)
		return ret;

	/* Set maximum packet length to 1536 bytes */
	ret = regmap_update_bits(smi->map, RTL8366RB_SGCR,
				 RTL8366RB_SGCR_MAX_LENGTH_MASK,
				 RTL8366RB_SGCR_MAX_LENGTH_1536);
	if (ret)
		return ret;
	for (i = 0; i < RTL8366RB_NUM_PORTS; i++)
		/* layer 2 size, see rtl8366rb_change_mtu() */
		rb->max_mtu[i] = 1532;

	/* Disable learning for all ports */
	ret = regmap_write(smi->map, RTL8366RB_PORT_LEARNDIS_CTRL,
			   RTL8366RB_PORT_ALL);
	if (ret)
		return ret;

	/* Enable auto ageing for all ports */
	ret = regmap_write(smi->map, RTL8366RB_SECURITY_CTRL, 0);
	if (ret)
		return ret;

	/* Port 4 setup: this enables Port 4, usually the WAN port,
	 * common PHY IO mode is apparently mode 0, and this is not what
	 * the port is initialized to. There is no explanation of the
	 * IO modes in the Realtek source code, if your WAN port is
	 * connected to something exotic such as fiber, then this might
	 * be worth experimenting with.
	 */
	ret = regmap_update_bits(smi->map, RTL8366RB_PMC0,
				 RTL8366RB_PMC0_P4_IOMODE_MASK,
				 0 << RTL8366RB_PMC0_P4_IOMODE_SHIFT);
	if (ret)
		return ret;

	/* Accept all packets by default, we enable filtering on-demand */
	ret = regmap_write(smi->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
			   0);
	if (ret)
		return ret;
	ret = regmap_write(smi->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
			   0);
	if (ret)
		return ret;

	/* Don't drop packets whose DA has not been learned */
	ret = regmap_update_bits(smi->map, RTL8366RB_SSCR2,
				 RTL8366RB_SSCR2_DROP_UNKNOWN_DA, 0);
	if (ret)
		return ret;

	/* Set blinking, TODO: make this configurable */
	ret = regmap_update_bits(smi->map, RTL8366RB_LED_BLINKRATE_REG,
				 RTL8366RB_LED_BLINKRATE_MASK,
				 RTL8366RB_LED_BLINKRATE_56MS);
	if (ret)
		return ret;

	/* Set up LED activity:
	 * Each port has 4 LEDs, we configure all ports to the same
	 * behaviour (no individual config) but we can set up each
	 * LED separately.
	 */
	if (smi->leds_disabled) {
		/* Turn everything off */
		regmap_update_bits(smi->map,
				   RTL8366RB_LED_0_1_CTRL_REG,
				   0x0FFF, 0);
		regmap_update_bits(smi->map,
				   RTL8366RB_LED_2_3_CTRL_REG,
				   0x0FFF, 0);
		regmap_update_bits(smi->map,
				   RTL8366RB_INTERRUPT_CONTROL_REG,
				   RTL8366RB_P4_RGMII_LED,
				   0);
		val = RTL8366RB_LED_OFF;
	} else {
		/* TODO: make this configurable per LED */
		val = RTL8366RB_LED_FORCE;
	}
	for (i = 0; i < 4; i++) {
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_LED_CTRL_REG,
					 0xf << (i * 4),
					 val << (i * 4));
		if (ret)
			return ret;
	}

	ret = rtl8366_reset_vlan(smi);
	if (ret)
		return ret;

	ret = rtl8366rb_setup_cascaded_irq(smi);
	if (ret)
		dev_info(smi->dev, "no interrupt support\n");

	ret = realtek_smi_setup_mdio(smi);
	if (ret) {
		dev_info(smi->dev, "could not set up MDIO bus\n");
		return -ENODEV;
	}

	return 0;
}

static enum dsa_tag_protocol rtl8366_get_tag_protocol(struct dsa_switch *ds,
						      int port,
						      enum dsa_tag_protocol mp)
{
	/* This switch uses the 4 byte protocol A Realtek DSA tag */
	return DSA_TAG_PROTO_RTL4_A;
}

static void
rtl8366rb_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode,
		      phy_interface_t interface, struct phy_device *phydev,
		      int speed, int duplex, bool tx_pause, bool rx_pause)
{
	struct realtek_smi *smi = ds->priv;
	int ret;

	if (port != smi->cpu_port)
		return;

	dev_dbg(smi->dev, "MAC link up on CPU port (%d)\n", port);

	/* Force the fixed CPU port into 1Gbit mode, no autonegotiation */
	ret = regmap_update_bits(smi->map, RTL8366RB_MAC_FORCE_CTRL_REG,
				 BIT(port), BIT(port));
	if (ret) {
		dev_err(smi->dev, "failed to force 1Gbit on CPU port\n");
		return;
	}

	ret = regmap_update_bits(smi->map, RTL8366RB_PAACR2,
				 0xFF00U,
				 RTL8366RB_PAACR_CPU_PORT << 8);
	if (ret) {
		dev_err(smi->dev, "failed to set PAACR on CPU port\n");
		return;
	}

	/* Enable the CPU port */
	ret = regmap_update_bits(smi->map, RTL8366RB_PECR, BIT(port),
				 0);
	if (ret) {
		dev_err(smi->dev, "failed to enable the CPU port\n");
		return;
	}
}

static void
rtl8366rb_mac_link_down(struct dsa_switch *ds, int port, unsigned int mode,
			phy_interface_t interface)
{
	struct realtek_smi *smi = ds->priv;
	int ret;

	if (port != smi->cpu_port)
		return;

	dev_dbg(smi->dev, "MAC link down on CPU port (%d)\n", port);

	/* Disable the CPU port */
	ret = regmap_update_bits(smi->map, RTL8366RB_PECR, BIT(port),
				 BIT(port));
	if (ret) {
		dev_err(smi->dev, "failed to disable the CPU port\n");
		return;
	}
}

static void rb8366rb_set_port_led(struct realtek_smi *smi,
				  int port, bool enable)
{
	u16 val = enable ? 0x3f : 0;
	int ret;

	if (smi->leds_disabled)
		return;

	switch (port) {
	case 0:
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_LED_0_1_CTRL_REG,
					 0x3F, val);
		break;
	case 1:
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_LED_0_1_CTRL_REG,
					 0x3F << RTL8366RB_LED_1_OFFSET,
					 val << RTL8366RB_LED_1_OFFSET);
		break;
	case 2:
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_LED_2_3_CTRL_REG,
					 0x3F, val);
		break;
	case 3:
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_LED_2_3_CTRL_REG,
					 0x3F << RTL8366RB_LED_3_OFFSET,
					 val << RTL8366RB_LED_3_OFFSET);
		break;
	case 4:
		ret = regmap_update_bits(smi->map,
					 RTL8366RB_INTERRUPT_CONTROL_REG,
					 RTL8366RB_P4_RGMII_LED,
					 enable ? RTL8366RB_P4_RGMII_LED : 0);
		break;
	default:
		dev_err(smi->dev, "no LED for port %d\n", port);
		return;
	}
	if (ret)
		dev_err(smi->dev, "error updating LED on port %d\n", port);
}

static int
rtl8366rb_port_enable(struct dsa_switch *ds, int port,
		      struct phy_device *phy)
{
	struct realtek_smi *smi = ds->priv;
	int ret;

	dev_dbg(smi->dev, "enable port %d\n", port);
	ret = regmap_update_bits(smi->map, RTL8366RB_PECR, BIT(port),
				 0);
	if (ret)
		return ret;

	rb8366rb_set_port_led(smi, port, true);
	return 0;
}

static void
rtl8366rb_port_disable(struct dsa_switch *ds, int port)
{
	struct realtek_smi *smi = ds->priv;
	int ret;

	dev_dbg(smi->dev, "disable port %d\n", port);
	ret = regmap_update_bits(smi->map, RTL8366RB_PECR, BIT(port),
				 BIT(port));
	if (ret)
		return;

	rb8366rb_set_port_led(smi, port, false);
}

static int
rtl8366rb_port_bridge_join(struct dsa_switch *ds, int port,
			   struct dsa_bridge bridge,
			   bool *tx_fwd_offload)
{
	struct realtek_smi *smi = ds->priv;
	unsigned int port_bitmap = 0;
	int ret, i;

	/* Loop over all other ports than the current one */
	for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
		/* Current port handled last */
		if (i == port)
			continue;
		/* Not on this bridge */
		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
			continue;
		/* Join this port to each other port on the bridge */
		ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
					 RTL8366RB_PORT_ISO_PORTS(BIT(port)),
					 RTL8366RB_PORT_ISO_PORTS(BIT(port)));
		if (ret)
			dev_err(smi->dev, "failed to join port %d\n", port);

		port_bitmap |= BIT(i);
	}

	/* Set the bits for the ports we can access */
	return regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(port),
				  RTL8366RB_PORT_ISO_PORTS(port_bitmap),
				  RTL8366RB_PORT_ISO_PORTS(port_bitmap));
}

static void
rtl8366rb_port_bridge_leave(struct dsa_switch *ds, int port,
			    struct dsa_bridge bridge)
{
	struct realtek_smi *smi = ds->priv;
	unsigned int port_bitmap = 0;
	int ret, i;

	/* Loop over all other ports than this one */
	for (i = 0; i < RTL8366RB_PORT_NUM_CPU; i++) {
		/* Current port handled last */
		if (i == port)
			continue;
		/* Not on this bridge */
		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
			continue;
		/* Remove this port from any other port on the bridge */
		ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
					 RTL8366RB_PORT_ISO_PORTS(BIT(port)), 0);
		if (ret)
			dev_err(smi->dev, "failed to leave port %d\n", port);

		port_bitmap |= BIT(i);
	}

	/* Clear the bits for the ports we can not access, leave ourselves */
	regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(port),
			   RTL8366RB_PORT_ISO_PORTS(port_bitmap), 0);
}

/**
 * rtl8366rb_drop_untagged() - make the switch drop untagged and C-tagged frames
 * @smi: SMI state container
 * @port: the port to drop untagged and C-tagged frames on
 * @drop: whether to drop or pass untagged and C-tagged frames
 */
static int rtl8366rb_drop_untagged(struct realtek_smi *smi, int port, bool drop)
{
	return regmap_update_bits(smi->map, RTL8366RB_VLAN_INGRESS_CTRL1_REG,
				  RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port),
				  drop ? RTL8366RB_VLAN_INGRESS_CTRL1_DROP(port) : 0);
}

static int rtl8366rb_vlan_filtering(struct dsa_switch *ds, int port,
				    bool vlan_filtering,
				    struct netlink_ext_ack *extack)
{
	struct realtek_smi *smi = ds->priv;
	struct rtl8366rb *rb;
	int ret;

	rb = smi->chip_data;

	dev_dbg(smi->dev, "port %d: %s VLAN filtering\n", port,
		vlan_filtering ? "enable" : "disable");

	/* If the port is not in the member set, the frame will be dropped */
	ret = regmap_update_bits(smi->map, RTL8366RB_VLAN_INGRESS_CTRL2_REG,
				 BIT(port), vlan_filtering ? BIT(port) : 0);
	if (ret)
		return ret;

	/* If VLAN filtering is enabled and PVID is also enabled, we must
	 * not drop any untagged or C-tagged frames. If we turn off VLAN
	 * filtering on a port, we need to accept any frames.
	 */
	if (vlan_filtering)
		ret = rtl8366rb_drop_untagged(smi, port, !rb->pvid_enabled[port]);
	else
		ret = rtl8366rb_drop_untagged(smi, port, false);

	return ret;
}

static int
rtl8366rb_port_pre_bridge_flags(struct dsa_switch *ds, int port,
				struct switchdev_brport_flags flags,
				struct netlink_ext_ack *extack)
{
	/* We support enabling/disabling learning */
	if (flags.mask & ~(BR_LEARNING))
		return -EINVAL;

	return 0;
}

static int
rtl8366rb_port_bridge_flags(struct dsa_switch *ds, int port,
			    struct switchdev_brport_flags flags,
			    struct netlink_ext_ack *extack)
{
	struct realtek_smi *smi = ds->priv;
	int ret;

	if (flags.mask & BR_LEARNING) {
		ret = regmap_update_bits(smi->map, RTL8366RB_PORT_LEARNDIS_CTRL,
					 BIT(port),
					 (flags.val & BR_LEARNING) ? 0 : BIT(port));
		if (ret)
			return ret;
	}

	return 0;
}

static void
rtl8366rb_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
{
	struct realtek_smi *smi = ds->priv;
	u32 val;
	int i;

	switch (state) {
	case BR_STATE_DISABLED:
		val = RTL8366RB_STP_STATE_DISABLED;
		break;
	case BR_STATE_BLOCKING:
	case BR_STATE_LISTENING:
		val = RTL8366RB_STP_STATE_BLOCKING;
		break;
	case BR_STATE_LEARNING:
		val = RTL8366RB_STP_STATE_LEARNING;
		break;
	case BR_STATE_FORWARDING:
		val = RTL8366RB_STP_STATE_FORWARDING;
		break;
	default:
		dev_err(smi->dev, "unknown bridge state requested\n");
		return;
	}

	/* Set the same status for the port on all the FIDs */
	for (i = 0; i < RTL8366RB_NUM_FIDS; i++) {
		regmap_update_bits(smi->map, RTL8366RB_STP_STATE_BASE + i,
				   RTL8366RB_STP_STATE_MASK(port),
				   RTL8366RB_STP_STATE(port, val));
	}
}

static void
rtl8366rb_port_fast_age(struct dsa_switch *ds, int port)
{
	struct realtek_smi *smi = ds->priv;

	/* This will age out any learned L2 entries */
	regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL,
			   BIT(port), BIT(port));
	/* Restore the normal state of things */
	regmap_update_bits(smi->map, RTL8366RB_SECURITY_CTRL,
			   BIT(port), 0);
}

static int rtl8366rb_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
{
	struct realtek_smi *smi = ds->priv;
	struct rtl8366rb *rb;
	unsigned int max_mtu;
	u32 len;
	int i;

	/* Cache the per-port MTU setting */
	rb = smi->chip_data;
	rb->max_mtu[port] = new_mtu;

	/* Roof out the MTU for the entire switch to the greatest
	 * common denominator: the biggest set for any one port will
	 * be the biggest MTU for the switch.
	 *
	 * The first setting, 1522 bytes, is max IP packet 1500 bytes,
	 * plus ethernet header, 1518 bytes, plus CPU tag, 4 bytes.
	 * This function should consider the parameter an SDU, so the
	 * MTU passed for this setting is 1518 bytes. The same logic
	 * of subtracting the DSA tag of 4 bytes apply to the other
	 * settings.
	 */
	max_mtu = 1518;
	for (i = 0; i < RTL8366RB_NUM_PORTS; i++) {
		if (rb->max_mtu[i] > max_mtu)
			max_mtu = rb->max_mtu[i];
	}
	if (max_mtu <= 1518)
		len = RTL8366RB_SGCR_MAX_LENGTH_1522;
	else if (max_mtu > 1518 && max_mtu <= 1532)
		len = RTL8366RB_SGCR_MAX_LENGTH_1536;
	else if (max_mtu > 1532 && max_mtu <= 1548)
		len = RTL8366RB_SGCR_MAX_LENGTH_1552;
	else
		len = RTL8366RB_SGCR_MAX_LENGTH_16000;

	return regmap_update_bits(smi->map, RTL8366RB_SGCR,
				  RTL8366RB_SGCR_MAX_LENGTH_MASK,
				  len);
}

static int rtl8366rb_max_mtu(struct dsa_switch *ds, int port)
{
	/* The max MTU is 16000 bytes, so we subtract the CPU tag
	 * and the max presented to the system is 15996 bytes.
	 */
	return 15996;
}

static int rtl8366rb_get_vlan_4k(struct realtek_smi *smi, u32 vid,
				 struct rtl8366_vlan_4k *vlan4k)
{
	u32 data[3];
	int ret;
	int i;

	memset(vlan4k, '\0', sizeof(struct rtl8366_vlan_4k));

	if (vid >= RTL8366RB_NUM_VIDS)
		return -EINVAL;

	/* write VID */
	ret = regmap_write(smi->map, RTL8366RB_VLAN_TABLE_WRITE_BASE,
			   vid & RTL8366RB_VLAN_VID_MASK);
	if (ret)
		return ret;

	/* write table access control word */
	ret = regmap_write(smi->map, RTL8366RB_TABLE_ACCESS_CTRL_REG,
			   RTL8366RB_TABLE_VLAN_READ_CTRL);
	if (ret)
		return ret;

	for (i = 0; i < 3; i++) {
		ret = regmap_read(smi->map,
				  RTL8366RB_VLAN_TABLE_READ_BASE + i,
				  &data[i]);
		if (ret)
			return ret;
	}

	vlan4k->vid = vid;
	vlan4k->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) &
			RTL8366RB_VLAN_UNTAG_MASK;
	vlan4k->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK;
	vlan4k->fid = data[2] & RTL8366RB_VLAN_FID_MASK;

	return 0;
}

static int rtl8366rb_set_vlan_4k(struct realtek_smi *smi,
				 const struct rtl8366_vlan_4k *vlan4k)
{
	u32 data[3];
	int ret;
	int i;

	if (vlan4k->vid >= RTL8366RB_NUM_VIDS ||
	    vlan4k->member > RTL8366RB_VLAN_MEMBER_MASK ||
	    vlan4k->untag > RTL8366RB_VLAN_UNTAG_MASK ||
	    vlan4k->fid > RTL8366RB_FIDMAX)
		return -EINVAL;

	data[0] = vlan4k->vid & RTL8366RB_VLAN_VID_MASK;
	data[1] = (vlan4k->member & RTL8366RB_VLAN_MEMBER_MASK) |
		  ((vlan4k->untag & RTL8366RB_VLAN_UNTAG_MASK) <<
			RTL8366RB_VLAN_UNTAG_SHIFT);
	data[2] = vlan4k->fid & RTL8366RB_VLAN_FID_MASK;

	for (i = 0; i < 3; i++) {
		ret = regmap_write(smi->map,
				   RTL8366RB_VLAN_TABLE_WRITE_BASE + i,
				   data[i]);
		if (ret)
			return ret;
	}

	/* write table access control word */
	ret = regmap_write(smi->map, RTL8366RB_TABLE_ACCESS_CTRL_REG,
			   RTL8366RB_TABLE_VLAN_WRITE_CTRL);

	return ret;
}

static int rtl8366rb_get_vlan_mc(struct realtek_smi *smi, u32 index,
				 struct rtl8366_vlan_mc *vlanmc)
{
	u32 data[3];
	int ret;
	int i;

	memset(vlanmc, '\0', sizeof(struct rtl8366_vlan_mc));

	if (index >= RTL8366RB_NUM_VLANS)
		return -EINVAL;

	for (i = 0; i < 3; i++) {
		ret = regmap_read(smi->map,
				  RTL8366RB_VLAN_MC_BASE(index) + i,
				  &data[i]);
		if (ret)
			return ret;
	}

	vlanmc->vid = data[0] & RTL8366RB_VLAN_VID_MASK;
	vlanmc->priority = (data[0] >> RTL8366RB_VLAN_PRIORITY_SHIFT) &
		RTL8366RB_VLAN_PRIORITY_MASK;
	vlanmc->untag = (data[1] >> RTL8366RB_VLAN_UNTAG_SHIFT) &
		RTL8366RB_VLAN_UNTAG_MASK;
	vlanmc->member = data[1] & RTL8366RB_VLAN_MEMBER_MASK;
	vlanmc->fid = data[2] & RTL8366RB_VLAN_FID_MASK;

	return 0;
}

static int rtl8366rb_set_vlan_mc(struct realtek_smi *smi, u32 index,
				 const struct rtl8366_vlan_mc *vlanmc)
{
	u32 data[3];
	int ret;
	int i;

	if (index >= RTL8366RB_NUM_VLANS ||
	    vlanmc->vid >= RTL8366RB_NUM_VIDS ||
	    vlanmc->priority > RTL8366RB_PRIORITYMAX ||
	    vlanmc->member > RTL8366RB_VLAN_MEMBER_MASK ||
	    vlanmc->untag > RTL8366RB_VLAN_UNTAG_MASK ||
	    vlanmc->fid > RTL8366RB_FIDMAX)
		return -EINVAL;

	data[0] = (vlanmc->vid & RTL8366RB_VLAN_VID_MASK) |
		  ((vlanmc->priority & RTL8366RB_VLAN_PRIORITY_MASK) <<
			RTL8366RB_VLAN_PRIORITY_SHIFT);
	data[1] = (vlanmc->member & RTL8366RB_VLAN_MEMBER_MASK) |
		  ((vlanmc->untag & RTL8366RB_VLAN_UNTAG_MASK) <<
			RTL8366RB_VLAN_UNTAG_SHIFT);
	data[2] = vlanmc->fid & RTL8366RB_VLAN_FID_MASK;

	for (i = 0; i < 3; i++) {
		ret = regmap_write(smi->map,
				   RTL8366RB_VLAN_MC_BASE(index) + i,
				   data[i]);
		if (ret)
			return ret;
	}

	return 0;
}

static int rtl8366rb_get_mc_index(struct realtek_smi *smi, int port, int *val)
{
	u32 data;
	int ret;

	if (port >= smi->num_ports)
		return -EINVAL;

	ret = regmap_read(smi->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
			  &data);
	if (ret)
		return ret;

	*val = (data >> RTL8366RB_PORT_VLAN_CTRL_SHIFT(port)) &
		RTL8366RB_PORT_VLAN_CTRL_MASK;

	return 0;
}

static int rtl8366rb_set_mc_index(struct realtek_smi *smi, int port, int index)
{
	struct rtl8366rb *rb;
	bool pvid_enabled;
	int ret;

	rb = smi->chip_data;
	pvid_enabled = !!index;

	if (port >= smi->num_ports || index >= RTL8366RB_NUM_VLANS)
		return -EINVAL;

	ret = regmap_update_bits(smi->map, RTL8366RB_PORT_VLAN_CTRL_REG(port),
				RTL8366RB_PORT_VLAN_CTRL_MASK <<
					RTL8366RB_PORT_VLAN_CTRL_SHIFT(port),
				(index & RTL8366RB_PORT_VLAN_CTRL_MASK) <<
					RTL8366RB_PORT_VLAN_CTRL_SHIFT(port));
	if (ret)
		return ret;

	rb->pvid_enabled[port] = pvid_enabled;

	/* If VLAN filtering is enabled and PVID is also enabled, we must
	 * not drop any untagged or C-tagged frames. Make sure to update the
	 * filtering setting.
	 */
	if (dsa_port_is_vlan_filtering(dsa_to_port(smi->ds, port)))
		ret = rtl8366rb_drop_untagged(smi, port, !pvid_enabled);

	return ret;
}

static bool rtl8366rb_is_vlan_valid(struct realtek_smi *smi, unsigned int vlan)
{
	unsigned int max = RTL8366RB_NUM_VLANS - 1;

	if (smi->vlan4k_enabled)
		max = RTL8366RB_NUM_VIDS - 1;

	if (vlan > max)
		return false;

	return true;
}

static int rtl8366rb_enable_vlan(struct realtek_smi *smi, bool enable)
{
	dev_dbg(smi->dev, "%s VLAN\n", enable ? "enable" : "disable");
	return regmap_update_bits(smi->map,
				  RTL8366RB_SGCR, RTL8366RB_SGCR_EN_VLAN,
				  enable ? RTL8366RB_SGCR_EN_VLAN : 0);
}

static int rtl8366rb_enable_vlan4k(struct realtek_smi *smi, bool enable)
{
	dev_dbg(smi->dev, "%s VLAN 4k\n", enable ? "enable" : "disable");
	return regmap_update_bits(smi->map, RTL8366RB_SGCR,
				  RTL8366RB_SGCR_EN_VLAN_4KTB,
				  enable ? RTL8366RB_SGCR_EN_VLAN_4KTB : 0);
}

static int rtl8366rb_phy_read(struct realtek_smi *smi, int phy, int regnum)
{
	u32 val;
	u32 reg;
	int ret;

	if (phy > RTL8366RB_PHY_NO_MAX)
		return -EINVAL;

	ret = regmap_write(smi->map, RTL8366RB_PHY_ACCESS_CTRL_REG,
			   RTL8366RB_PHY_CTRL_READ);
	if (ret)
		return ret;

	reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum;

	ret = regmap_write(smi->map, reg, 0);
	if (ret) {
		dev_err(smi->dev,
			"failed to write PHY%d reg %04x @ %04x, ret %d\n",
			phy, regnum, reg, ret);
		return ret;
	}

	ret = regmap_read(smi->map, RTL8366RB_PHY_ACCESS_DATA_REG, &val);
	if (ret)
		return ret;

	dev_dbg(smi->dev, "read PHY%d register 0x%04x @ %08x, val <- %04x\n",
		phy, regnum, reg, val);

	return val;
}

static int rtl8366rb_phy_write(struct realtek_smi *smi, int phy, int regnum,
			       u16 val)
{
	u32 reg;
	int ret;

	if (phy > RTL8366RB_PHY_NO_MAX)
		return -EINVAL;

	ret = regmap_write(smi->map, RTL8366RB_PHY_ACCESS_CTRL_REG,
			   RTL8366RB_PHY_CTRL_WRITE);
	if (ret)
		return ret;

	reg = 0x8000 | (1 << (phy + RTL8366RB_PHY_NO_OFFSET)) | regnum;

	dev_dbg(smi->dev, "write PHY%d register 0x%04x @ %04x, val -> %04x\n",
		phy, regnum, reg, val);

	ret = regmap_write(smi->map, reg, val);
	if (ret)
		return ret;

	return 0;
}

static int rtl8366rb_reset_chip(struct realtek_smi *smi)
{
	int timeout = 10;
	u32 val;
	int ret;

	realtek_smi_write_reg_noack(smi, RTL8366RB_RESET_CTRL_REG,
				    RTL8366RB_CHIP_CTRL_RESET_HW);
	do {
		usleep_range(20000, 25000);
		ret = regmap_read(smi->map, RTL8366RB_RESET_CTRL_REG, &val);
		if (ret)
			return ret;

		if (!(val & RTL8366RB_CHIP_CTRL_RESET_HW))
			break;
	} while (--timeout);

	if (!timeout) {
		dev_err(smi->dev, "timeout waiting for the switch to reset\n");
		return -EIO;
	}

	return 0;
}

static int rtl8366rb_detect(struct realtek_smi *smi)
{
	struct device *dev = smi->dev;
	int ret;
	u32 val;

	/* Detect device */
	ret = regmap_read(smi->map, 0x5c, &val);
	if (ret) {
		dev_err(dev, "can't get chip ID (%d)\n", ret);
		return ret;
	}

	switch (val) {
	case 0x6027:
		dev_info(dev, "found an RTL8366S switch\n");
		dev_err(dev, "this switch is not yet supported, submit patches!\n");
		return -ENODEV;
	case 0x5937:
		dev_info(dev, "found an RTL8366RB switch\n");
		smi->cpu_port = RTL8366RB_PORT_NUM_CPU;
		smi->num_ports = RTL8366RB_NUM_PORTS;
		smi->num_vlan_mc = RTL8366RB_NUM_VLANS;
		smi->mib_counters = rtl8366rb_mib_counters;
		smi->num_mib_counters = ARRAY_SIZE(rtl8366rb_mib_counters);
		break;
	default:
		dev_info(dev, "found an Unknown Realtek switch (id=0x%04x)\n",
			 val);
		break;
	}

	ret = rtl8366rb_reset_chip(smi);
	if (ret)
		return ret;

	return 0;
}

static const struct dsa_switch_ops rtl8366rb_switch_ops = {
	.get_tag_protocol = rtl8366_get_tag_protocol,
	.setup = rtl8366rb_setup,
	.phylink_mac_link_up = rtl8366rb_mac_link_up,
	.phylink_mac_link_down = rtl8366rb_mac_link_down,
	.get_strings = rtl8366_get_strings,
	.get_ethtool_stats = rtl8366_get_ethtool_stats,
	.get_sset_count = rtl8366_get_sset_count,
	.port_bridge_join = rtl8366rb_port_bridge_join,
	.port_bridge_leave = rtl8366rb_port_bridge_leave,
	.port_vlan_filtering = rtl8366rb_vlan_filtering,
	.port_vlan_add = rtl8366_vlan_add,
	.port_vlan_del = rtl8366_vlan_del,
	.port_enable = rtl8366rb_port_enable,
	.port_disable = rtl8366rb_port_disable,
	.port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags,
	.port_bridge_flags = rtl8366rb_port_bridge_flags,
	.port_stp_state_set = rtl8366rb_port_stp_state_set,
	.port_fast_age = rtl8366rb_port_fast_age,
	.port_change_mtu = rtl8366rb_change_mtu,
	.port_max_mtu = rtl8366rb_max_mtu,
};

static const struct realtek_smi_ops rtl8366rb_smi_ops = {
	.detect		= rtl8366rb_detect,
	.get_vlan_mc	= rtl8366rb_get_vlan_mc,
	.set_vlan_mc	= rtl8366rb_set_vlan_mc,
	.get_vlan_4k	= rtl8366rb_get_vlan_4k,
	.set_vlan_4k	= rtl8366rb_set_vlan_4k,
	.get_mc_index	= rtl8366rb_get_mc_index,
	.set_mc_index	= rtl8366rb_set_mc_index,
	.get_mib_counter = rtl8366rb_get_mib_counter,
	.is_vlan_valid	= rtl8366rb_is_vlan_valid,
	.enable_vlan	= rtl8366rb_enable_vlan,
	.enable_vlan4k	= rtl8366rb_enable_vlan4k,
	.phy_read	= rtl8366rb_phy_read,
	.phy_write	= rtl8366rb_phy_write,
};

const struct realtek_smi_variant rtl8366rb_variant = {
	.ds_ops = &rtl8366rb_switch_ops,
	.ops = &rtl8366rb_smi_ops,
	.clk_delay = 10,
	.cmd_read = 0xa9,
	.cmd_write = 0xa8,
	.chip_data_sz = sizeof(struct rtl8366rb),
};
EXPORT_SYMBOL_GPL(rtl8366rb_variant);