treewide: fix replace nbd@openwrt.org with nbd@nbd.name
[openwrt.org/openwrt.git] / target / linux / generic / files / drivers / net / phy / ip17xx.c
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
/*
 * ip17xx.c: Swconfig configuration for IC+ IP17xx switch family
 *
 * Copyright (C) 2008 Patrick Horn <patrick.horn@gmail.com>
 * Copyright (C) 2008, 2010 Martin Mares <mj@ucw.cz>
 * Copyright (C) 2009 Felix Fietkau <nbd@nbd.name>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */
 
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/skbuff.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/delay.h>
#include <linux/switch.h>
#include <linux/device.h>
 
#define MAX_VLANS 16
#define MAX_PORTS 9
#undef DUMP_MII_IO
 
typedef struct ip17xx_reg {
        u16 p;                  // phy
        u16 m;                  // mii
} reg;
typedef char bitnum;
 
#define NOTSUPPORTED {-1,-1}
 
#define REG_SUPP(x) (((x).m != ((u16)-1)) && ((x).p != (u16)-1))
 
struct ip17xx_state;
 
/*********** CONSTANTS ***********/
struct register_mappings {
        char *NAME;
        u16 MODEL_NO;                   // Compare to bits 4-9 of MII register 0,3.
        bitnum NUM_PORTS;
        bitnum CPU_PORT;
 
/* The default VLAN for each port.
         Default: 0x0001 for Ports 0,1,2,3
                  0x0002 for Ports 4,5 */
        reg VLAN_DEFAULT_TAG_REG[MAX_PORTS];
 
/* These ports are tagged.
         Default: 0x00 */
        reg ADD_TAG_REG;
        reg REMOVE_TAG_REG;
        bitnum ADD_TAG_BIT[MAX_PORTS];
/* These ports are untagged.
         Default: 0x00 (i.e. do not alter any VLAN tags...)
         Maybe set to 0 if user disables VLANs. */
        bitnum REMOVE_TAG_BIT[MAX_PORTS];
 
/* Port M and Port N are on the same VLAN.
         Default: All ports on all VLANs. */
// Use register {29, 19+N/2}
        reg VLAN_LOOKUP_REG;
// Port 5 uses register {30, 18} but same as odd bits.
        reg VLAN_LOOKUP_REG_5;          // in a different register on IP175C.
        bitnum VLAN_LOOKUP_EVEN_BIT[MAX_PORTS];
        bitnum VLAN_LOOKUP_ODD_BIT[MAX_PORTS];
 
/* This VLAN corresponds to which ports.
         Default: 0x2f,0x30,0x3f,0x3f... */
        reg TAG_VLAN_MASK_REG;
        bitnum TAG_VLAN_MASK_EVEN_BIT[MAX_PORTS];
        bitnum TAG_VLAN_MASK_ODD_BIT[MAX_PORTS];
 
        int RESET_VAL;
        reg RESET_REG;
 
        reg MODE_REG;
        int MODE_VAL;
 
/* General flags */
        reg ROUTER_CONTROL_REG;
        reg VLAN_CONTROL_REG;
        bitnum TAG_VLAN_BIT;
        bitnum ROUTER_EN_BIT;
        bitnum NUMLAN_GROUPS_MAX;
        bitnum NUMLAN_GROUPS_BIT;
 
        reg MII_REGISTER_EN;
        bitnum MII_REGISTER_EN_BIT;
 
        // set to 1 for 178C, 0 for 175C.
        bitnum SIMPLE_VLAN_REGISTERS;   // 175C has two vlans per register but 178C has only one.
 
        // Pointers to functions which manipulate hardware state
        int (*update_state)(struct ip17xx_state *state);
        int (*set_vlan_mode)(struct ip17xx_state *state);
        int (*reset)(struct ip17xx_state *state);
};
 
static int ip175c_update_state(struct ip17xx_state *state);
static int ip175c_set_vlan_mode(struct ip17xx_state *state);
static int ip175c_reset(struct ip17xx_state *state);
 
static const struct register_mappings IP178C = {
        .NAME = "IP178C",
        .MODEL_NO = 0x18,
        .VLAN_DEFAULT_TAG_REG = {
                {30,3},{30,4},{30,5},{30,6},{30,7},{30,8},
                {30,9},{30,10},{30,11},
        },
 
        .ADD_TAG_REG = {30,12},
        .ADD_TAG_BIT = {0,1,2,3,4,5,6,7,8},
        .REMOVE_TAG_REG = {30,13},
        .REMOVE_TAG_BIT = {4,5,6,7,8,9,10,11,12},
 
        .SIMPLE_VLAN_REGISTERS = 1,
 
        .VLAN_LOOKUP_REG = {31,0},// +N
        .VLAN_LOOKUP_REG_5 = NOTSUPPORTED, // not used with SIMPLE_VLAN_REGISTERS
        .VLAN_LOOKUP_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
        .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 
        .TAG_VLAN_MASK_REG = {30,14}, // +N
        .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,6,7,8},
        .TAG_VLAN_MASK_ODD_BIT = {0,1,2,3,4,5,6,7,8},
 
        .RESET_VAL = 0x55AA,
        .RESET_REG = {30,0},
        .MODE_VAL = 0,
        .MODE_REG = NOTSUPPORTED,
 
        .ROUTER_CONTROL_REG = {30,30},
        .ROUTER_EN_BIT = 11,
        .NUMLAN_GROUPS_MAX = 8,
        .NUMLAN_GROUPS_BIT = 8, // {0-2}
 
        .VLAN_CONTROL_REG = {30,13},
        .TAG_VLAN_BIT = 3,
 
        .CPU_PORT = 8,
        .NUM_PORTS = 9,
 
        .MII_REGISTER_EN = NOTSUPPORTED,
 
        .update_state = ip175c_update_state,
        .set_vlan_mode = ip175c_set_vlan_mode,
        .reset = ip175c_reset,
};
 
static const struct register_mappings IP175C = {
        .NAME = "IP175C",
        .MODEL_NO = 0x18,
        .VLAN_DEFAULT_TAG_REG = {
                {29,24},{29,25},{29,26},{29,27},{29,28},{29,30},
                NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
        },
 
        .ADD_TAG_REG = {29,23},
        .REMOVE_TAG_REG = {29,23},
        .ADD_TAG_BIT = {11,12,13,14,15,1,-1,-1,-1},
        .REMOVE_TAG_BIT = {6,7,8,9,10,0,-1,-1,-1},
 
        .SIMPLE_VLAN_REGISTERS = 0,
 
        .VLAN_LOOKUP_REG = {29,19},// +N/2
        .VLAN_LOOKUP_REG_5 = {30,18},
        .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,15,-1,-1,-1},
        .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,7,-1,-1,-1},
 
        .TAG_VLAN_MASK_REG = {30,1}, // +N/2
        .TAG_VLAN_MASK_EVEN_BIT = {0,1,2,3,4,5,-1,-1,-1},
        .TAG_VLAN_MASK_ODD_BIT = {8,9,10,11,12,13,-1,-1,-1},
 
        .RESET_VAL = 0x175C,
        .RESET_REG = {30,0},
        .MODE_VAL = 0x175C,
        .MODE_REG = {29,31},
 
        .ROUTER_CONTROL_REG = {30,9},
        .ROUTER_EN_BIT = 3,
        .NUMLAN_GROUPS_MAX = 8,
        .NUMLAN_GROUPS_BIT = 0, // {0-2}
 
        .VLAN_CONTROL_REG = {30,9},
        .TAG_VLAN_BIT = 7,
 
        .NUM_PORTS = 6,
        .CPU_PORT = 5,
 
        .MII_REGISTER_EN = NOTSUPPORTED,
 
        .update_state = ip175c_update_state,
        .set_vlan_mode = ip175c_set_vlan_mode,
        .reset = ip175c_reset,
};
 
static const struct register_mappings IP175A = {
        .NAME = "IP175A",
        .MODEL_NO = 0x05,
        .VLAN_DEFAULT_TAG_REG = {
                {0,24},{0,25},{0,26},{0,27},{0,28},NOTSUPPORTED,
                NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED
        },
 
        .ADD_TAG_REG = {0,23},
        .REMOVE_TAG_REG = {0,23},
        .ADD_TAG_BIT = {11,12,13,14,15,-1,-1,-1,-1},
        .REMOVE_TAG_BIT = {6,7,8,9,10,-1,-1,-1,-1},
 
        .SIMPLE_VLAN_REGISTERS = 0,
 
        // Only programmable via EEPROM
        .VLAN_LOOKUP_REG = NOTSUPPORTED,// +N/2
        .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
        .VLAN_LOOKUP_EVEN_BIT = {8,9,10,11,12,-1,-1,-1,-1},
        .VLAN_LOOKUP_ODD_BIT = {0,1,2,3,4,-1,-1,-1,-1},
 
        .TAG_VLAN_MASK_REG = NOTSUPPORTED, // +N/2,
        .TAG_VLAN_MASK_EVEN_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
        .TAG_VLAN_MASK_ODD_BIT = {-1,-1,-1,-1,-1,-1,-1,-1,-1},
 
        .RESET_VAL = -1,
        .RESET_REG = NOTSUPPORTED,
        .MODE_VAL = 0,
        .MODE_REG = NOTSUPPORTED,
 
        .ROUTER_CONTROL_REG = NOTSUPPORTED,
        .VLAN_CONTROL_REG = NOTSUPPORTED,
        .TAG_VLAN_BIT = -1,
        .ROUTER_EN_BIT = -1,
        .NUMLAN_GROUPS_MAX = -1,
        .NUMLAN_GROUPS_BIT = -1, // {0-2}
 
        .NUM_PORTS = 5,
        .CPU_PORT = 4,
 
        .MII_REGISTER_EN = {0, 18},
        .MII_REGISTER_EN_BIT = 7,
 
        .update_state = ip175c_update_state,
        .set_vlan_mode = ip175c_set_vlan_mode,
        .reset = ip175c_reset,
};
 
 
static int ip175d_update_state(struct ip17xx_state *state);
static int ip175d_set_vlan_mode(struct ip17xx_state *state);
static int ip175d_reset(struct ip17xx_state *state);
 
static const struct register_mappings IP175D = {
        .NAME = "IP175D",
        .MODEL_NO = 0x18,
 
        // The IP175D has a completely different interface, so we leave most
        // of the registers undefined and switch to different code paths.
 
        .VLAN_DEFAULT_TAG_REG = {
                NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
                NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,NOTSUPPORTED,
        },
 
        .ADD_TAG_REG = NOTSUPPORTED,
        .REMOVE_TAG_REG = NOTSUPPORTED,
 
        .SIMPLE_VLAN_REGISTERS = 0,
 
        .VLAN_LOOKUP_REG = NOTSUPPORTED,
        .VLAN_LOOKUP_REG_5 = NOTSUPPORTED,
        .TAG_VLAN_MASK_REG = NOTSUPPORTED,
 
        .RESET_VAL = 0x175D,
        .RESET_REG = {20,2},
        .MODE_REG = NOTSUPPORTED,
 
        .ROUTER_CONTROL_REG = NOTSUPPORTED,
        .ROUTER_EN_BIT = -1,
        .NUMLAN_GROUPS_BIT = -1,
 
        .VLAN_CONTROL_REG = NOTSUPPORTED,
        .TAG_VLAN_BIT = -1,
 
        .NUM_PORTS = 6,
        .CPU_PORT = 5,
 
        .MII_REGISTER_EN = NOTSUPPORTED,
 
        .update_state = ip175d_update_state,
        .set_vlan_mode = ip175d_set_vlan_mode,
        .reset = ip175d_reset,
};
 
struct ip17xx_state {
        struct switch_dev dev;
        struct mii_bus *mii_bus;
        bool registered;
 
        int router_mode;                // ROUTER_EN
        int vlan_enabled;               // TAG_VLAN_EN
        struct port_state {
                u16 pvid;
                unsigned int shareports;
        } ports[MAX_PORTS];
        unsigned int add_tag;
        unsigned int remove_tag;
        int num_vlans;
        struct vlan_state {
                unsigned int ports;
                unsigned int tag;       // VLAN tag (IP175D only)
        } vlans[MAX_VLANS];
        const struct register_mappings *regs;
        reg proc_mii;   // phy/reg for the low level register access via swconfig
 
        char buf[80];
};
 
#define get_state(_dev) container_of((_dev), struct ip17xx_state, dev)
 
static int ip_phy_read(struct ip17xx_state *state, int port, int reg)
{
        int val = mdiobus_read(state->mii_bus, port, reg);
        if (val < 0)
                pr_warning("IP17xx: Unable to get MII register %d,%d: error %d\n", port, reg, -val);
#ifdef DUMP_MII_IO
        else
                pr_debug("IP17xx: Read MII(%d,%d) -> %04x\n", port, reg, val);
#endif
        return val;
}
 
static int ip_phy_write(struct ip17xx_state *state, int port, int reg, u16 val)
{
        int err;
 
#ifdef DUMP_MII_IO
        pr_debug("IP17xx: Write MII(%d,%d) <- %04x\n", port, reg, val);
#endif
        err = mdiobus_write(state->mii_bus, port, reg, val);
        if (err < 0)
                pr_warning("IP17xx: Unable to write MII register %d,%d: error %d\n", port, reg, -err);
        return err;
}
 
static int ip_phy_write_masked(struct ip17xx_state *state, int port, int reg, unsigned int mask, unsigned int data)
{
        int val = ip_phy_read(state, port, reg);
        if (val < 0)
                return 0;
        return ip_phy_write(state, port, reg, (val & ~mask) | data);
}
 
static int getPhy(struct ip17xx_state *state, reg mii)
{
        if (!REG_SUPP(mii))
                return -EFAULT;
        return ip_phy_read(state, mii.p, mii.m);
}
 
static int setPhy(struct ip17xx_state *state, reg mii, u16 value)
{
        int err;
 
        if (!REG_SUPP(mii))
                return -EFAULT;
        err = ip_phy_write(state, mii.p, mii.m, value);
        if (err < 0)
                return err;
        mdelay(2);
        getPhy(state, mii);
        return 0;
}
 
 
/**
 * These two macros are to simplify the mapping of logical bits to the bits in hardware.
 * NOTE: these macros will return if there is an error!
 */
 
#define GET_PORT_BITS(state, bits, addr, bit_lookup)            \
        do {                                                    \
                int i, val = getPhy((state), (addr));           \
                if (val < 0)                                    \
                        return val;                             \
                (bits) = 0;                                     \
                for (i = 0; i < MAX_PORTS; i++) {               \
                        if ((bit_lookup)[i] == -1) continue;    \
                        if (val & (1<<(bit_lookup)[i]))         \
                                (bits) |= (1<<i);               \
                }                                               \
        } while (0)
 
#define SET_PORT_BITS(state, bits, addr, bit_lookup)            \
        do {                                                    \
                int i, val = getPhy((state), (addr));           \
                if (val < 0)                                    \
                        return val;                             \
                for (i = 0; i < MAX_PORTS; i++) {               \
                        unsigned int newmask = ((bits)&(1<<i)); \
                        if ((bit_lookup)[i] == -1) continue;    \
                        val &= ~(1<<(bit_lookup)[i]);           \
                        val |= ((newmask>>i)<<(bit_lookup)[i]); \
                }                                               \
                val = setPhy((state), (addr), val);             \
                if (val < 0)                                    \
                        return val;                             \
        } while (0)
 
 
static int get_model(struct ip17xx_state *state)
{
        int id1, id2;
        int oui_id, model_no, rev_no, chip_no;
 
        id1 = ip_phy_read(state, 0, 2);
        id2 = ip_phy_read(state, 0, 3);
        oui_id = (id1 << 6) | ((id2 >> 10) & 0x3f);
        model_no = (id2 >> 4) & 0x3f;
        rev_no = id2 & 0xf;
        pr_debug("IP17xx: Identified oui=%06x model=%02x rev=%X\n", oui_id, model_no, rev_no);
 
        if (oui_id != 0x0090c3)  // No other oui_id should have reached us anyway
                return -ENODEV;
 
        if (model_no == IP175A.MODEL_NO) {
                state->regs = &IP175A;
        } else if (model_no == IP175C.MODEL_NO) {
                /*
                 *  Several models share the same model_no:
                 *  178C has more PHYs, so we try whether the device responds to a read from PHY5
                 *  175D has a new chip ID register
                 *  175C has neither
                 */
                if (ip_phy_read(state, 5, 2) == 0x0243) {
                        state->regs = &IP178C;
                } else {
                        chip_no = ip_phy_read(state, 20, 0);
                        pr_debug("IP17xx: Chip ID register reads %04x\n", chip_no);
                        if (chip_no == 0x175d) {
                                state->regs = &IP175D;
                        } else {
                                state->regs = &IP175C;
                        }
                }
        } else {
                pr_warning("IP17xx: Found an unknown IC+ switch with model number %02x, revision %X.\n", model_no, rev_no);
                return -EPERM;
        }
        return 0;
}
 
/*** Low-level functions for the older models ***/
 
/** Only set vlan and router flags in the switch **/
static int ip175c_set_flags(struct ip17xx_state *state)
{
        int val;
 
        if (!REG_SUPP(state->regs->ROUTER_CONTROL_REG)) {
                return 0;
        }
 
        val = getPhy(state, state->regs->ROUTER_CONTROL_REG);
        if (val < 0) {
                return val;
        }
        if (state->regs->ROUTER_EN_BIT >= 0) {
                if (state->router_mode) {
                        val |= (1<<state->regs->ROUTER_EN_BIT);
                } else {
                        val &= (~(1<<state->regs->ROUTER_EN_BIT));
                }
        }
        if (state->regs->TAG_VLAN_BIT >= 0) {
                if (state->vlan_enabled) {
                        val |= (1<<state->regs->TAG_VLAN_BIT);
                } else {
                        val &= (~(1<<state->regs->TAG_VLAN_BIT));
                }
        }
        if (state->regs->NUMLAN_GROUPS_BIT >= 0) {
                val &= (~((state->regs->NUMLAN_GROUPS_MAX-1)<<state->regs->NUMLAN_GROUPS_BIT));
                if (state->num_vlans > state->regs->NUMLAN_GROUPS_MAX) {
                        val |= state->regs->NUMLAN_GROUPS_MAX << state->regs->NUMLAN_GROUPS_BIT;
                } else if (state->num_vlans >= 1) {
                        val |= (state->num_vlans-1) << state->regs->NUMLAN_GROUPS_BIT;
                }
        }
        return setPhy(state, state->regs->ROUTER_CONTROL_REG, val);
}
 
/** Set all VLAN and port state.  Usually you should call "correct_vlan_state" first. **/
static int ip175c_set_state(struct ip17xx_state *state)
{
        int j;
        int i;
        SET_PORT_BITS(state, state->add_tag,
                                  state->regs->ADD_TAG_REG, state->regs->ADD_TAG_BIT);
        SET_PORT_BITS(state, state->remove_tag,
                                  state->regs->REMOVE_TAG_REG, state->regs->REMOVE_TAG_BIT);
 
        if (REG_SUPP(state->regs->VLAN_LOOKUP_REG)) {
                for (j=0; j<state->regs->NUM_PORTS; j++) {
                        reg addr;
                        const bitnum *bit_lookup = (j%2==0)?
                                state->regs->VLAN_LOOKUP_EVEN_BIT:
                                state->regs->VLAN_LOOKUP_ODD_BIT;
 
                        addr = state->regs->VLAN_LOOKUP_REG;
                        if (state->regs->SIMPLE_VLAN_REGISTERS) {
                                addr.m += j;
                        } else {
                                switch (j) {
                                case 0:
                                case 1:
                                        break;
                                case 2:
                                case 3:
                                        addr.m+=1;
                                        break;
                                case 4:
                                        addr.m+=2;
                                        break;
                                case 5:
                                        addr = state->regs->VLAN_LOOKUP_REG_5;
                                        break;
                                default:
                                        addr.m = -1; // shouldn't get here, but...
                                        break;
                                }
                        }
                        //printf("shareports for %d is %02X\n",j,state->ports[j].shareports);
                        if (REG_SUPP(addr)) {
                                SET_PORT_BITS(state, state->ports[j].shareports, addr, bit_lookup);
                        }
                }
        }
        if (REG_SUPP(state->regs->TAG_VLAN_MASK_REG)) {
                for (j=0; j<MAX_VLANS; j++) {
                        reg addr = state->regs->TAG_VLAN_MASK_REG;
                        const bitnum *bit_lookup = (j%2==0)?
                                state->regs->TAG_VLAN_MASK_EVEN_BIT:
                                state->regs->TAG_VLAN_MASK_ODD_BIT;
                        unsigned int vlan_mask;
                        if (state->regs->SIMPLE_VLAN_REGISTERS) {
                                addr.m += j;
                        } else {
                                addr.m += j/2;
                        }
                        vlan_mask = state->vlans[j].ports;
                        SET_PORT_BITS(state, vlan_mask, addr, bit_lookup);
                }
        }
 
        for (i=0; i<MAX_PORTS; i++) {
                if (REG_SUPP(state->regs->VLAN_DEFAULT_TAG_REG[i])) {
                        int err = setPhy(state, state->regs->VLAN_DEFAULT_TAG_REG[i],
                                        state->ports[i].pvid);
                        if (err < 0) {
                                return err;
                        }
                }
        }
 
        return ip175c_set_flags(state);
}
 
/**
 *  Uses only the VLAN port mask and the add tag mask to generate the other fields:
 *  which ports are part of the same VLAN, removing vlan tags, and VLAN tag ids.
 */
static void ip175c_correct_vlan_state(struct ip17xx_state *state)
{
        int i, j;
        state->num_vlans = 0;
        for (i=0; i<MAX_VLANS; i++) {
                if (state->vlans[i].ports != 0) {
                        state->num_vlans = i+1; // Hack -- we need to store the "set" vlans somewhere...
                }
        }
 
        for (i=0; i<state->regs->NUM_PORTS; i++) {
                unsigned int portmask = (1<<i);
                if (!state->vlan_enabled) {
                        // Share with everybody!
                        state->ports[i].shareports = (1<<state->regs->NUM_PORTS)-1;
                        continue;
                }
                state->ports[i].shareports = portmask;
                for (j=0; j<MAX_VLANS; j++) {
                        if (state->vlans[j].ports & portmask)
                                state->ports[i].shareports |= state->vlans[j].ports;
                }
        }
}
 
static int ip175c_update_state(struct ip17xx_state *state)
{
        ip175c_correct_vlan_state(state);
        return ip175c_set_state(state);
}
 
static int ip175c_set_vlan_mode(struct ip17xx_state *state)
{
        return ip175c_update_state(state);
}
 
static int ip175c_reset(struct ip17xx_state *state)
{
        int err;
 
        if (REG_SUPP(state->regs->MODE_REG)) {
                err = setPhy(state, state->regs->MODE_REG, state->regs->MODE_VAL);
                if (err < 0)
                        return err;
                err = getPhy(state, state->regs->MODE_REG);
                if (err < 0)
                        return err;
        }
 
        return ip175c_update_state(state);
}
 
/*** Low-level functions for IP175D ***/
 
static int ip175d_update_state(struct ip17xx_state *state)
{
        unsigned int filter_mask = 0;
        unsigned int ports[16], add[16], rem[16];
        int i, j;
        int err = 0;
 
        for (i = 0; i < 16; i++) {
                ports[i] = 0;
                add[i] = 0;
                rem[i] = 0;
                if (!state->vlan_enabled) {
                        err |= ip_phy_write(state, 22, 14+i, i+1);      // default tags
                        ports[i] = 0x3f;
                        continue;
                }
                if (!state->vlans[i].tag) {
                        // Reset the filter
                        err |= ip_phy_write(state, 22, 14+i, 0);        // tag
                        continue;
                }
                filter_mask |= 1 << i;
                err |= ip_phy_write(state, 22, 14+i, state->vlans[i].tag);
                ports[i] = state->vlans[i].ports;
                for (j = 0; j < 6; j++) {
                        if (ports[i] & (1 << j)) {
                                if (state->add_tag & (1 << j))
                                        add[i] |= 1 << j;
                                if (state->remove_tag & (1 << j))
                                        rem[i] |= 1 << j;
                        }
                }
        }
 
        // Port masks, tag adds and removals
        for (i = 0; i < 8; i++) {
                err |= ip_phy_write(state, 23, i, ports[2*i] | (ports[2*i+1] << 8));
                err |= ip_phy_write(state, 23, 8+i, add[2*i] | (add[2*i+1] << 8));
                err |= ip_phy_write(state, 23, 16+i, rem[2*i] | (rem[2*i+1] << 8));
        }
        err |= ip_phy_write(state, 22, 10, filter_mask);
 
        // Default VLAN tag for each port
        for (i = 0; i < 6; i++)
                err |= ip_phy_write(state, 22, 4+i, state->vlans[state->ports[i].pvid].tag);
 
        return (err ? -EIO : 0);
}
 
static int ip175d_set_vlan_mode(struct ip17xx_state *state)
{
        int i;
        int err = 0;
 
        if (state->vlan_enabled) {
                // VLAN classification rules: tag-based VLANs, use VID to classify,
                // drop packets that cannot be classified.
                err |= ip_phy_write_masked(state, 22, 0, 0x3fff, 0x003f);
 
                // Ingress rules: CFI=1 dropped, null VID is untagged, VID=1 passed,
                // VID=0xfff discarded, admin both tagged and untagged, ingress
                // filters enabled.
                err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
 
                // Egress rules: IGMP processing off, keep VLAN header off
                err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
        } else {
                // VLAN classification rules: everything off & clear table
                err |= ip_phy_write_masked(state, 22, 0, 0xbfff, 0x8000);
 
                // Ingress and egress rules: set to defaults
                err |= ip_phy_write_masked(state, 22, 1, 0x0fff, 0x0c3f);
                err |= ip_phy_write_masked(state, 22, 2, 0x0fff, 0x0000);
        }
 
        // Reset default VLAN for each port to 0
        for (i = 0; i < 6; i++)
                state->ports[i].pvid = 0;
 
        err |= ip175d_update_state(state);
 
        return (err ? -EIO : 0);
}
 
static int ip175d_reset(struct ip17xx_state *state)
{
        int err = 0;
 
        // Disable the special tagging mode
        err |= ip_phy_write_masked(state, 21, 22, 0x0003, 0x0000);
 
        // Set 802.1q protocol type
        err |= ip_phy_write(state, 22, 3, 0x8100);
 
        state->vlan_enabled = 0;
        err |= ip175d_set_vlan_mode(state);
 
        return (err ? -EIO : 0);
}
 
/*** High-level functions ***/
 
static int ip17xx_get_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        val->value.i = state->vlan_enabled;
        return 0;
}
 
static void ip17xx_reset_vlan_config(struct ip17xx_state *state)
{
        int i;
 
        state->remove_tag = (state->vlan_enabled ? ((1<<state->regs->NUM_PORTS)-1) : 0x0000);
        state->add_tag = 0x0000;
        for (i = 0; i < MAX_VLANS; i++) {
                state->vlans[i].ports = 0x0000;
                state->vlans[i].tag = (i ? i : 16);
        }
        for (i = 0; i < MAX_PORTS; i++)
                state->ports[i].pvid = 0;
}
 
static int ip17xx_set_enable_vlan(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int enable;
 
        enable = val->value.i;
        if (state->vlan_enabled == enable) {
                // Do not change any state.
                return 0;
        }
        state->vlan_enabled = enable;
 
        // Otherwise, if we are switching state, set fields to a known default.
        ip17xx_reset_vlan_config(state);
 
        return state->regs->set_vlan_mode(state);
}
 
static int ip17xx_get_ports(struct switch_dev *dev, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int b;
        int ind;
        unsigned int ports;
 
        if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
                return -EINVAL;
 
        ports = state->vlans[val->port_vlan].ports;
        b = 0;
        ind = 0;
        while (b < MAX_PORTS) {
                if (ports&1) {
                        int istagged = ((state->add_tag >> b) & 1);
                        val->value.ports[ind].id = b;
                        val->value.ports[ind].flags = (istagged << SWITCH_PORT_FLAG_TAGGED);
                        ind++;
                }
                b++;
                ports >>= 1;
        }
        val->len = ind;
 
        return 0;
}
 
static int ip17xx_set_ports(struct switch_dev *dev, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int i;
 
        if (val->port_vlan >= dev->vlans || val->port_vlan < 0)
                return -EINVAL;
 
        state->vlans[val->port_vlan].ports = 0;
        for (i = 0; i < val->len; i++) {
                unsigned int bitmask = (1<<val->value.ports[i].id);
                state->vlans[val->port_vlan].ports |= bitmask;
                if (val->value.ports[i].flags & (1<<SWITCH_PORT_FLAG_TAGGED)) {
                        state->add_tag |= bitmask;
                        state->remove_tag &= (~bitmask);
                } else {
                        state->add_tag &= (~bitmask);
                        state->remove_tag |= bitmask;
                }
        }
 
        return state->regs->update_state(state);
}
 
static int ip17xx_apply(struct switch_dev *dev)
{
        struct ip17xx_state *state = get_state(dev);
 
        if (REG_SUPP(state->regs->MII_REGISTER_EN)) {
                int val = getPhy(state, state->regs->MII_REGISTER_EN);
                if (val < 0) {
                        return val;
                }
                val |= (1<<state->regs->MII_REGISTER_EN_BIT);
                return setPhy(state, state->regs->MII_REGISTER_EN, val);
        }
        return 0;
}
 
static int ip17xx_reset(struct switch_dev *dev)
{
        struct ip17xx_state *state = get_state(dev);
        int i, err;
 
        if (REG_SUPP(state->regs->RESET_REG)) {
                err = setPhy(state, state->regs->RESET_REG, state->regs->RESET_VAL);
                if (err < 0)
                        return err;
                err = getPhy(state, state->regs->RESET_REG);
 
                /*
                 *  Data sheet specifies reset period to be 2 msec.
                 *  (I don't see any mention of the 2ms delay in the IP178C spec, only
                 *  in IP175C, but it can't hurt.)
                 */
                mdelay(2);
        }
 
        /* reset switch ports */
        for (i = 0; i < state->regs->NUM_PORTS-1; i++) {
                err = ip_phy_write(state, i, MII_BMCR, BMCR_RESET);
                if (err < 0)
                        return err;
        }
 
        state->router_mode = 0;
        state->vlan_enabled = 0;
        ip17xx_reset_vlan_config(state);
 
        return state->regs->reset(state);
}
 
static int ip17xx_get_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        if (state->add_tag & (1<<val->port_vlan)) {
                if (state->remove_tag & (1<<val->port_vlan))
                        val->value.i = 3; // shouldn't ever happen.
                else
                        val->value.i = 1;
        } else {
                if (state->remove_tag & (1<<val->port_vlan))
                        val->value.i = 0;
                else
                        val->value.i = 2;
        }
        return 0;
}
 
static int ip17xx_set_tagged(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        state->add_tag &= ~(1<<val->port_vlan);
        state->remove_tag &= ~(1<<val->port_vlan);
 
        if (val->value.i == 0)
                state->remove_tag |= (1<<val->port_vlan);
        if (val->value.i == 1)
                state->add_tag |= (1<<val->port_vlan);
 
        return state->regs->update_state(state);
}
 
/** Get the current phy address */
static int ip17xx_get_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        val->value.i = state->proc_mii.p;
        return 0;
}
 
/** Set a new phy address for low level access to registers */
static int ip17xx_set_phy(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int new_reg = val->value.i;
 
        if (new_reg < 0 || new_reg > 31)
                state->proc_mii.p = (u16)-1;
        else
                state->proc_mii.p = (u16)new_reg;
        return 0;
}
 
/** Get the current register number */
static int ip17xx_get_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        val->value.i = state->proc_mii.m;
        return 0;
}
 
/** Set a new register address for low level access to registers */
static int ip17xx_set_reg(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int new_reg = val->value.i;
 
        if (new_reg < 0 || new_reg > 31)
                state->proc_mii.m = (u16)-1;
        else
                state->proc_mii.m = (u16)new_reg;
        return 0;
}
 
/** Get the register content of state->proc_mii */
static int ip17xx_get_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int retval = -EINVAL;
        if (REG_SUPP(state->proc_mii))
                retval = getPhy(state, state->proc_mii);
 
        if (retval < 0) {
                return retval;
        } else {
                val->value.i = retval;
                return 0;
        }
}
 
/** Write a value to the register defined by phy/reg above */
static int ip17xx_set_val(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int myval, err = -EINVAL;
 
        myval = val->value.i;
        if (myval <= 0xffff && myval >= 0 && REG_SUPP(state->proc_mii)) {
                err = setPhy(state, state->proc_mii, (u16)myval);
        }
        return err;
}
 
static int ip17xx_read_name(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        val->value.s = state->regs->NAME; // Just a const pointer, won't be freed by swconfig.
        return 0;
}
 
static int ip17xx_get_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int vlan = val->port_vlan;
 
        if (vlan < 0 || vlan >= MAX_VLANS)
                return -EINVAL;
 
        val->value.i = state->vlans[vlan].tag;
        return 0;
}
 
static int ip17xx_set_tag(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int vlan = val->port_vlan;
        int tag = val->value.i;
 
        if (vlan < 0 || vlan >= MAX_VLANS)
                return -EINVAL;
 
        if (tag < 0 || tag > 4095)
                return -EINVAL;
 
        state->vlans[vlan].tag = tag;
        return state->regs->update_state(state);
}
 
static int ip17xx_set_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int nr = val->port_vlan;
        int ctrl;
        int autoneg;
        int speed;
        if (val->value.i == 100) {
                speed = 1;
                autoneg = 0;
        } else if (val->value.i == 10) {
                speed = 0;
                autoneg = 0;
        } else {
                autoneg = 1;
                speed = 1;
        }
 
        /* Can't set speed for cpu port */
        if (nr == state->regs->CPU_PORT)
                return -EINVAL;
 
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
        ctrl = ip_phy_read(state, nr, 0);
        if (ctrl < 0)
                return -EIO;
 
        ctrl &= (~(1<<12));
        ctrl &= (~(1<<13));
        ctrl |= (autoneg<<12);
        ctrl |= (speed<<13);
 
        return ip_phy_write(state, nr, 0, ctrl);
}
 
static int ip17xx_get_port_speed(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int nr = val->port_vlan;
        int speed, status;
 
        if (nr == state->regs->CPU_PORT) {
                val->value.i = 100;
                return 0;
        }
 
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
        status = ip_phy_read(state, nr, 1);
        speed = ip_phy_read(state, nr, 18);
        if (status < 0 || speed < 0)
                return -EIO;
 
        if (status & 4)
                val->value.i = ((speed & (1<<11)) ? 100 : 10);
        else
                val->value.i = 0;
 
        return 0;
}
 
static int ip17xx_get_port_status(struct switch_dev *dev, const struct switch_attr *attr, struct switch_val *val)
{
        struct ip17xx_state *state = get_state(dev);
        int ctrl, speed, status;
        int nr = val->port_vlan;
        int len;
        char *buf = state->buf; // fixed-length at 80.
 
        if (nr == state->regs->CPU_PORT) {
                sprintf(buf, "up, 100 Mbps, cpu port");
                val->value.s = buf;
                return 0;
        }
 
        if (nr >= dev->ports || nr < 0)
                return -EINVAL;
 
        ctrl = ip_phy_read(state, nr, 0);
        status = ip_phy_read(state, nr, 1);
        speed = ip_phy_read(state, nr, 18);
        if (ctrl < 0 || status < 0 || speed < 0)
                return -EIO;
 
        if (status & 4)
                len = sprintf(buf, "up, %d Mbps, %s duplex",
                        ((speed & (1<<11)) ? 100 : 10),
                        ((speed & (1<<10)) ? "full" : "half"));
        else
                len = sprintf(buf, "down");
 
        if (ctrl & (1<<12)) {
                len += sprintf(buf+len, ", auto-negotiate");
                if (!(status & (1<<5)))
                        len += sprintf(buf+len, " (in progress)");
        } else {
                len += sprintf(buf+len, ", fixed speed (%d)",
                        ((ctrl & (1<<13)) ? 100 : 10));
        }
 
        buf[len] = '\0';
        val->value.s = buf;
        return 0;
}
 
static int ip17xx_get_pvid(struct switch_dev *dev, int port, int *val)
{
        struct ip17xx_state *state = get_state(dev);
 
        *val = state->ports[port].pvid;
        return 0;
}
 
static int ip17xx_set_pvid(struct switch_dev *dev, int port, int val)
{
        struct ip17xx_state *state = get_state(dev);
 
        if (val < 0 || val >= MAX_VLANS)
                return -EINVAL;
 
        state->ports[port].pvid = val;
        return state->regs->update_state(state);
}
 
 
enum Ports {
        IP17XX_PORT_STATUS,
        IP17XX_PORT_LINK,
        IP17XX_PORT_TAGGED,
        IP17XX_PORT_PVID,
};
 
enum Globals {
        IP17XX_ENABLE_VLAN,
        IP17XX_GET_NAME,
        IP17XX_REGISTER_PHY,
        IP17XX_REGISTER_MII,
        IP17XX_REGISTER_VALUE,
        IP17XX_REGISTER_ERRNO,
};
 
enum Vlans {
        IP17XX_VLAN_TAG,
};
 
static const struct switch_attr ip17xx_global[] = {
        [IP17XX_ENABLE_VLAN] = {
                .id = IP17XX_ENABLE_VLAN,
                .type = SWITCH_TYPE_INT,
                .name  = "enable_vlan",
                .description = "Flag to enable or disable VLANs and tagging",
                .get  = ip17xx_get_enable_vlan,
                .set = ip17xx_set_enable_vlan,
        },
        [IP17XX_GET_NAME] = {
                .id = IP17XX_GET_NAME,
                .type = SWITCH_TYPE_STRING,
                .description = "Returns the type of IC+ chip.",
                .name  = "name",
                .get  = ip17xx_read_name,
                .set = NULL,
        },
        /* jal: added for low level debugging etc. */
        [IP17XX_REGISTER_PHY] = {
                .id = IP17XX_REGISTER_PHY,
                .type = SWITCH_TYPE_INT,
                .description = "Direct register access: set PHY (0-4, or 29,30,31)",
                .name  = "phy",
                .get  = ip17xx_get_phy,
                .set = ip17xx_set_phy,
        },
        [IP17XX_REGISTER_MII] = {
                .id = IP17XX_REGISTER_MII,
                .type = SWITCH_TYPE_INT,
                .description = "Direct register access: set MII register number (0-31)",
                .name  = "reg",
                .get  = ip17xx_get_reg,
                .set = ip17xx_set_reg,
        },
        [IP17XX_REGISTER_VALUE] = {
                .id = IP17XX_REGISTER_VALUE,
                .type = SWITCH_TYPE_INT,
                .description = "Direct register access: read/write to register (0-65535)",
                .name  = "val",
                .get  = ip17xx_get_val,
                .set = ip17xx_set_val,
        },
};
 
static const struct switch_attr ip17xx_vlan[] = {
        [IP17XX_VLAN_TAG] = {
                .id = IP17XX_VLAN_TAG,
                .type = SWITCH_TYPE_INT,
                .description = "VLAN ID (0-4095) [IP175D only]",
                .name = "vid",
                .get = ip17xx_get_tag,
                .set = ip17xx_set_tag,
        }
};
 
static const struct switch_attr ip17xx_port[] = {
        [IP17XX_PORT_STATUS] = {
                .id = IP17XX_PORT_STATUS,
                .type = SWITCH_TYPE_STRING,
                .description = "Returns Detailed port status",
                .name  = "status",
                .get  = ip17xx_get_port_status,
                .set = NULL,
        },
        [IP17XX_PORT_LINK] = {
                .id = IP17XX_PORT_LINK,
                .type = SWITCH_TYPE_INT,
                .description = "Link speed. Can write 0 for auto-negotiate, or 10 or 100",
                .name  = "link",
                .get  = ip17xx_get_port_speed,
                .set = ip17xx_set_port_speed,
        },
        [IP17XX_PORT_TAGGED] = {
                .id = IP17XX_PORT_LINK,
                .type = SWITCH_TYPE_INT,
                .description = "0 = untag, 1 = add tags, 2 = do not alter (This value is reset if vlans are altered)",
                .name  = "tagged",
                .get  = ip17xx_get_tagged,
                .set = ip17xx_set_tagged,
        },
};
 
static const struct switch_dev_ops ip17xx_ops = {
        .attr_global = {
                .attr = ip17xx_global,
                .n_attr = ARRAY_SIZE(ip17xx_global),
        },
        .attr_port = {
                .attr = ip17xx_port,
                .n_attr = ARRAY_SIZE(ip17xx_port),
        },
        .attr_vlan = {
                .attr = ip17xx_vlan,
                .n_attr = ARRAY_SIZE(ip17xx_vlan),
        },
 
        .get_port_pvid = ip17xx_get_pvid,
        .set_port_pvid = ip17xx_set_pvid,
        .get_vlan_ports = ip17xx_get_ports,
        .set_vlan_ports = ip17xx_set_ports,
        .apply_config = ip17xx_apply,
        .reset_switch = ip17xx_reset,
};
 
static int ip17xx_probe(struct phy_device *pdev)
{
        struct ip17xx_state *state;
        struct switch_dev *dev;
        int err;
 
        /* We only attach to PHY 0, but use all available PHYs */
        if (pdev->addr != 0)
                return -ENODEV;
 
        state = kzalloc(sizeof(*state), GFP_KERNEL);
        if (!state)
                return -ENOMEM;
 
        dev = &state->dev;
 
        pdev->priv = state;
        state->mii_bus = pdev->bus;
 
        err = get_model(state);
        if (err < 0)
                goto error;
 
        dev->vlans = MAX_VLANS;
        dev->cpu_port = state->regs->CPU_PORT;
        dev->ports = state->regs->NUM_PORTS;
        dev->name = state->regs->NAME;
        dev->ops = &ip17xx_ops;
 
        pr_info("IP17xx: Found %s at %s\n", dev->name, dev_name(&pdev->dev));
        return 0;
 
error:
        kfree(state);
        return err;
}
 
static int ip17xx_config_init(struct phy_device *pdev)
{
        struct ip17xx_state *state = pdev->priv;
        struct net_device *dev = pdev->attached_dev;
        int err;
 
        err = register_switch(&state->dev, dev);
        if (err < 0)
                return err;
 
        state->registered = true;
        ip17xx_reset(&state->dev);
        return 0;
}
 
static void ip17xx_remove(struct phy_device *pdev)
{
        struct ip17xx_state *state = pdev->priv;
 
        if (state->registered)
                unregister_switch(&state->dev);
        kfree(state);
}
 
static int ip17xx_config_aneg(struct phy_device *pdev)
{
        return 0;
}
 
static int ip17xx_aneg_done(struct phy_device *pdev)
{
        return BMSR_ANEGCOMPLETE;
}
 
static int ip17xx_update_link(struct phy_device *pdev)
{
        pdev->link = 1;
        return 0;
}
 
static int ip17xx_read_status(struct phy_device *pdev)
{
        pdev->speed = SPEED_100;
        pdev->duplex = DUPLEX_FULL;
        pdev->pause = pdev->asym_pause = 0;
        pdev->link = 1;
 
        return 0;
}
 
static struct phy_driver ip17xx_driver = {
        .name           = "IC+ IP17xx",
        .phy_id         = 0x02430c00,
        .phy_id_mask    = 0x0ffffc00,
        .features       = PHY_BASIC_FEATURES,
        .probe          = ip17xx_probe,
        .remove         = ip17xx_remove,
        .config_init    = ip17xx_config_init,
        .config_aneg    = ip17xx_config_aneg,
        .aneg_done      = ip17xx_aneg_done,
        .update_link    = ip17xx_update_link,
        .read_status    = ip17xx_read_status,
        .driver         = { .owner = THIS_MODULE },
};
 
static struct phy_driver ip175a_driver = {
        .name           = "IC+ IP175A",
        .phy_id         = 0x02430c50,
        .phy_id_mask    = 0x0ffffff0,
        .features       = PHY_BASIC_FEATURES,
        .probe          = ip17xx_probe,
        .remove         = ip17xx_remove,
        .config_init    = ip17xx_config_init,
        .config_aneg    = ip17xx_config_aneg,
        .aneg_done      = ip17xx_aneg_done,
        .update_link    = ip17xx_update_link,
        .read_status    = ip17xx_read_status,
        .driver         = { .owner = THIS_MODULE },
};
 
 
int __init ip17xx_init(void)
{
        int ret;
 
        ret = phy_driver_register(&ip175a_driver);
        if (ret < 0)
                return ret;
 
        return phy_driver_register(&ip17xx_driver);
}
 
void __exit ip17xx_exit(void)
{
        phy_driver_unregister(&ip17xx_driver);
        phy_driver_unregister(&ip175a_driver);
}
 
MODULE_AUTHOR("Patrick Horn <patrick.horn@gmail.com>");
MODULE_AUTHOR("Felix Fietkau <nbd@nbd.name>");
MODULE_AUTHOR("Martin Mares <mj@ucw.cz>");
MODULE_LICENSE("GPL");
 
module_init(ip17xx_init);
module_exit(ip17xx_exit);
 
comments