summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ath5k/ath5k.h
blob: 64a453a6dfe442d22c533435787df147b86101fe (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
/*
 * Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
 * Copyright (c) 2006-2007 Nick Kossifidis <mickflemm@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _ATH5K_H
#define _ATH5K_H

/* TODO: Clean up channel debugging (doesn't work anyway) and start
 * working on reg. control code using all available eeprom information
 * (rev. engineering needed) */
#define CHAN_DEBUG	0

#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/average.h>
#include <linux/leds.h>
#include <net/mac80211.h>

/* RX/TX descriptor hw structs
 * TODO: Driver part should only see sw structs */
#include "desc.h"

/* EEPROM structs/offsets
 * TODO: Make a more generic struct (eg. add more stuff to ath5k_capabilities)
 * and clean up common bits, then introduce set/get functions in eeprom.c */
#include "eeprom.h"
#include "debug.h"
#include "../ath.h"
#include "ani.h"

/* PCI IDs */
#define PCI_DEVICE_ID_ATHEROS_AR5210		0x0007 /* AR5210 */
#define PCI_DEVICE_ID_ATHEROS_AR5311		0x0011 /* AR5311 */
#define PCI_DEVICE_ID_ATHEROS_AR5211		0x0012 /* AR5211 */
#define PCI_DEVICE_ID_ATHEROS_AR5212		0x0013 /* AR5212 */
#define PCI_DEVICE_ID_3COM_3CRDAG675		0x0013 /* 3CRDAG675 (Atheros AR5212) */
#define PCI_DEVICE_ID_3COM_2_3CRPAG175		0x0013 /* 3CRPAG175 (Atheros AR5212) */
#define PCI_DEVICE_ID_ATHEROS_AR5210_AP		0x0207 /* AR5210 (Early) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_IBM	0x1014 /* AR5212 (IBM MiniPCI) */
#define PCI_DEVICE_ID_ATHEROS_AR5210_DEFAULT	0x1107 /* AR5210 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_DEFAULT	0x1113 /* AR5212 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_DEFAULT	0x1112 /* AR5211 (no eeprom) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_FPGA	0xf013 /* AR5212 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_LEGACY	0xff12 /* AR5211 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5211_FPGA11B	0xf11b /* AR5211 (emulation board) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV2	0x0052 /* AR5312 WMAC (AP31) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV7	0x0057 /* AR5312 WMAC (AP30-040) */
#define PCI_DEVICE_ID_ATHEROS_AR5312_REV8	0x0058 /* AR5312 WMAC (AP43-030) */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0014	0x0014 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0015	0x0015 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0016	0x0016 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0017	0x0017 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0018	0x0018 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR5212_0019	0x0019 /* AR5212 compatible */
#define PCI_DEVICE_ID_ATHEROS_AR2413		0x001a /* AR2413 (Griffin-lite) */
#define PCI_DEVICE_ID_ATHEROS_AR5413		0x001b /* AR5413 (Eagle) */
#define PCI_DEVICE_ID_ATHEROS_AR5424		0x001c /* AR5424 (Condor PCI-E) */
#define PCI_DEVICE_ID_ATHEROS_AR5416		0x0023 /* AR5416 */
#define PCI_DEVICE_ID_ATHEROS_AR5418		0x0024 /* AR5418 */

/****************************\
  GENERIC DRIVER DEFINITIONS
\****************************/

#define ATH5K_PRINTF(fmt, ...)						\
	pr_warn("%s: " fmt, __func__, ##__VA_ARGS__)

void __printf(3, 4)
_ath5k_printk(const struct ath5k_hw *ah, const char *level,
	      const char *fmt, ...);

#define ATH5K_PRINTK(_sc, _level, _fmt, ...)				\
	_ath5k_printk(_sc, _level, _fmt, ##__VA_ARGS__)

#define ATH5K_PRINTK_LIMIT(_sc, _level, _fmt, ...)			\
do {									\
	if (net_ratelimit())						\
		ATH5K_PRINTK(_sc, _level, _fmt, ##__VA_ARGS__); 	\
} while (0)

#define ATH5K_INFO(_sc, _fmt, ...)					\
	ATH5K_PRINTK(_sc, KERN_INFO, _fmt, ##__VA_ARGS__)

#define ATH5K_WARN(_sc, _fmt, ...)					\
	ATH5K_PRINTK_LIMIT(_sc, KERN_WARNING, _fmt, ##__VA_ARGS__)

#define ATH5K_ERR(_sc, _fmt, ...)					\
	ATH5K_PRINTK_LIMIT(_sc, KERN_ERR, _fmt, ##__VA_ARGS__)

/*
 * AR5K REGISTER ACCESS
 */

/* Some macros to read/write fields */

/* First shift, then mask */
#define AR5K_REG_SM(_val, _flags)					\
	(((_val) << _flags##_S) & (_flags))

/* First mask, then shift */
#define AR5K_REG_MS(_val, _flags)					\
	(((_val) & (_flags)) >> _flags##_S)

/* Some registers can hold multiple values of interest. For this
 * reason when we want to write to these registers we must first
 * retrieve the values which we do not want to clear (lets call this
 * old_data) and then set the register with this and our new_value:
 * ( old_data | new_value) */
#define AR5K_REG_WRITE_BITS(ah, _reg, _flags, _val)			\
	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) & ~(_flags)) | \
	    (((_val) << _flags##_S) & (_flags)), _reg)

#define AR5K_REG_MASKED_BITS(ah, _reg, _flags, _mask)			\
	ath5k_hw_reg_write(ah, (ath5k_hw_reg_read(ah, _reg) &		\
			(_mask)) | (_flags), _reg)

#define AR5K_REG_ENABLE_BITS(ah, _reg, _flags)				\
	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) | (_flags), _reg)

#define AR5K_REG_DISABLE_BITS(ah, _reg, _flags)			\
	ath5k_hw_reg_write(ah, ath5k_hw_reg_read(ah, _reg) & ~(_flags), _reg)

/* Access QCU registers per queue */
#define AR5K_REG_READ_Q(ah, _reg, _queue)				\
	(ath5k_hw_reg_read(ah, _reg) & (1 << _queue))			\

#define AR5K_REG_WRITE_Q(ah, _reg, _queue)				\
	ath5k_hw_reg_write(ah, (1 << _queue), _reg)

#define AR5K_Q_ENABLE_BITS(_reg, _queue) do {				\
	_reg |= 1 << _queue;						\
} while (0)

#define AR5K_Q_DISABLE_BITS(_reg, _queue) do {				\
	_reg &= ~(1 << _queue);						\
} while (0)

/* Used while writing initvals */
#define AR5K_REG_WAIT(_i) do {						\
	if (_i % 64)							\
		udelay(1);						\
} while (0)

/*
 * Some tunable values (these should be changeable by the user)
 * TODO: Make use of them and add more options OR use debug/configfs
 */
#define AR5K_TUNE_DMA_BEACON_RESP		2
#define AR5K_TUNE_SW_BEACON_RESP		10
#define AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF	0
#define AR5K_TUNE_MIN_TX_FIFO_THRES		1
#define AR5K_TUNE_MAX_TX_FIFO_THRES	((IEEE80211_MAX_FRAME_LEN / 64) + 1)
#define AR5K_TUNE_REGISTER_TIMEOUT		20000
/* Register for RSSI threshold has a mask of 0xff, so 255 seems to
 * be the max value. */
#define AR5K_TUNE_RSSI_THRES			129
/* This must be set when setting the RSSI threshold otherwise it can
 * prevent a reset. If AR5K_RSSI_THR is read after writing to it
 * the BMISS_THRES will be seen as 0, seems hardware doesn't keep
 * track of it. Max value depends on hardware. For AR5210 this is just 7.
 * For AR5211+ this seems to be up to 255. */
#define AR5K_TUNE_BMISS_THRES			7
#define AR5K_TUNE_REGISTER_DWELL_TIME		20000
#define AR5K_TUNE_BEACON_INTERVAL		100
#define AR5K_TUNE_AIFS				2
#define AR5K_TUNE_AIFS_11B			2
#define AR5K_TUNE_AIFS_XR			0
#define AR5K_TUNE_CWMIN				15
#define AR5K_TUNE_CWMIN_11B			31
#define AR5K_TUNE_CWMIN_XR			3
#define AR5K_TUNE_CWMAX				1023
#define AR5K_TUNE_CWMAX_11B			1023
#define AR5K_TUNE_CWMAX_XR			7
#define AR5K_TUNE_NOISE_FLOOR			-72
#define AR5K_TUNE_CCA_MAX_GOOD_VALUE		-95
#define AR5K_TUNE_MAX_TXPOWER			63
#define AR5K_TUNE_DEFAULT_TXPOWER		25
#define AR5K_TUNE_TPC_TXPOWER			false
#define ATH5K_TUNE_CALIBRATION_INTERVAL_FULL    60000   /* 60 sec */
#define	ATH5K_TUNE_CALIBRATION_INTERVAL_SHORT	10000	/* 10 sec */
#define ATH5K_TUNE_CALIBRATION_INTERVAL_ANI	1000	/* 1 sec */
#define ATH5K_TX_COMPLETE_POLL_INT		3000	/* 3 sec */

#define AR5K_INIT_CARR_SENSE_EN			1

/*Swap RX/TX Descriptor for big endian archs*/
#if defined(__BIG_ENDIAN)
#define AR5K_INIT_CFG	(		\
	AR5K_CFG_SWTD | AR5K_CFG_SWRD	\
)
#else
#define AR5K_INIT_CFG	0x00000000
#endif

/* Initial values */
#define	AR5K_INIT_CYCRSSI_THR1			2

/* Tx retry limit defaults from standard */
#define AR5K_INIT_RETRY_SHORT			7
#define AR5K_INIT_RETRY_LONG			4

/* Slot time */
#define AR5K_INIT_SLOT_TIME_TURBO		6
#define AR5K_INIT_SLOT_TIME_DEFAULT		9
#define	AR5K_INIT_SLOT_TIME_HALF_RATE		13
#define	AR5K_INIT_SLOT_TIME_QUARTER_RATE	21
#define	AR5K_INIT_SLOT_TIME_B			20
#define AR5K_SLOT_TIME_MAX			0xffff

/* SIFS */
#define	AR5K_INIT_SIFS_TURBO			6
#define	AR5K_INIT_SIFS_DEFAULT_BG		10
#define	AR5K_INIT_SIFS_DEFAULT_A		16
#define	AR5K_INIT_SIFS_HALF_RATE		32
#define AR5K_INIT_SIFS_QUARTER_RATE		64

/* Used to calculate tx time for non 5/10/40MHz
 * operation */
/* It's preamble time + signal time (16 + 4) */
#define	AR5K_INIT_OFDM_PREAMPLE_TIME		20
/* Preamble time for 40MHz (turbo) operation (min ?) */
#define	AR5K_INIT_OFDM_PREAMBLE_TIME_MIN	14
#define	AR5K_INIT_OFDM_SYMBOL_TIME		4
#define	AR5K_INIT_OFDM_PLCP_BITS		22

/* Rx latency for 5 and 10MHz operation (max ?) */
#define AR5K_INIT_RX_LAT_MAX			63
/* Tx latencies from initvals (5212 only but no problem
 * because we only tweak them on 5212) */
#define	AR5K_INIT_TX_LAT_A			54
#define	AR5K_INIT_TX_LAT_BG			384
/* Tx latency for 40MHz (turbo) operation (min ?) */
#define	AR5K_INIT_TX_LAT_MIN			32
/* Default Tx/Rx latencies (same for 5211)*/
#define AR5K_INIT_TX_LATENCY_5210		54
#define	AR5K_INIT_RX_LATENCY_5210		29

/* Tx frame to Tx data start delay */
#define AR5K_INIT_TXF2TXD_START_DEFAULT		14
#define AR5K_INIT_TXF2TXD_START_DELAY_10MHZ	12
#define AR5K_INIT_TXF2TXD_START_DELAY_5MHZ	13

/* We need to increase PHY switch and agc settling time
 * on turbo mode */
#define	AR5K_SWITCH_SETTLING			5760
#define	AR5K_SWITCH_SETTLING_TURBO		7168

#define	AR5K_AGC_SETTLING			28
/* 38 on 5210 but shouldn't matter */
#define	AR5K_AGC_SETTLING_TURBO			37



/*****************************\
* GENERIC CHIPSET DEFINITIONS *
\*****************************/

/**
 * enum ath5k_version - MAC Chips
 * @AR5K_AR5210: AR5210 (Crete)
 * @AR5K_AR5211: AR5211 (Oahu/Maui)
 * @AR5K_AR5212: AR5212 (Venice) and newer
 */
enum ath5k_version {
	AR5K_AR5210	= 0,
	AR5K_AR5211	= 1,
	AR5K_AR5212	= 2,
};

/**
 * enum ath5k_radio - PHY Chips
 * @AR5K_RF5110: RF5110 (Fez)
 * @AR5K_RF5111: RF5111 (Sombrero)
 * @AR5K_RF5112: RF2112/5112(A) (Derby/Derby2)
 * @AR5K_RF2413: RF2413/2414 (Griffin/Griffin-Lite)
 * @AR5K_RF5413: RF5413/5414/5424 (Eagle/Condor)
 * @AR5K_RF2316: RF2315/2316 (Cobra SoC)
 * @AR5K_RF2317: RF2317 (Spider SoC)
 * @AR5K_RF2425: RF2425/2417 (Swan/Nalla)
 */
enum ath5k_radio {
	AR5K_RF5110	= 0,
	AR5K_RF5111	= 1,
	AR5K_RF5112	= 2,
	AR5K_RF2413	= 3,
	AR5K_RF5413	= 4,
	AR5K_RF2316	= 5,
	AR5K_RF2317	= 6,
	AR5K_RF2425	= 7,
};

/*
 * Common silicon revision/version values
 */

#define AR5K_SREV_UNKNOWN	0xffff

#define AR5K_SREV_AR5210	0x00 /* Crete */
#define AR5K_SREV_AR5311	0x10 /* Maui 1 */
#define AR5K_SREV_AR5311A	0x20 /* Maui 2 */
#define AR5K_SREV_AR5311B	0x30 /* Spirit */
#define AR5K_SREV_AR5211	0x40 /* Oahu */
#define AR5K_SREV_AR5212	0x50 /* Venice */
#define AR5K_SREV_AR5312_R2	0x52 /* AP31 */
#define AR5K_SREV_AR5212_V4	0x54 /* ??? */
#define AR5K_SREV_AR5213	0x55 /* ??? */
#define AR5K_SREV_AR5312_R7	0x57 /* AP30 */
#define AR5K_SREV_AR2313_R8	0x58 /* AP43 */
#define AR5K_SREV_AR5213A	0x59 /* Hainan */
#define AR5K_SREV_AR2413	0x78 /* Griffin lite */
#define AR5K_SREV_AR2414	0x70 /* Griffin */
#define AR5K_SREV_AR2315_R6	0x86 /* AP51-Light */
#define AR5K_SREV_AR2315_R7	0x87 /* AP51-Full */
#define AR5K_SREV_AR5424	0x90 /* Condor */
#define AR5K_SREV_AR2317_R1	0x90 /* AP61-Light */
#define AR5K_SREV_AR2317_R2	0x91 /* AP61-Full */
#define AR5K_SREV_AR5413	0xa4 /* Eagle lite */
#define AR5K_SREV_AR5414	0xa0 /* Eagle */
#define AR5K_SREV_AR2415	0xb0 /* Talon */
#define AR5K_SREV_AR5416	0xc0 /* PCI-E */
#define AR5K_SREV_AR5418	0xca /* PCI-E */
#define AR5K_SREV_AR2425	0xe0 /* Swan */
#define AR5K_SREV_AR2417	0xf0 /* Nala */

#define AR5K_SREV_RAD_5110	0x00
#define AR5K_SREV_RAD_5111	0x10
#define AR5K_SREV_RAD_5111A	0x15
#define AR5K_SREV_RAD_2111	0x20
#define AR5K_SREV_RAD_5112	0x30
#define AR5K_SREV_RAD_5112A	0x35
#define	AR5K_SREV_RAD_5112B	0x36
#define AR5K_SREV_RAD_2112	0x40
#define AR5K_SREV_RAD_2112A	0x45
#define	AR5K_SREV_RAD_2112B	0x46
#define AR5K_SREV_RAD_2413	0x50
#define AR5K_SREV_RAD_5413	0x60
#define AR5K_SREV_RAD_2316	0x70 /* Cobra SoC */
#define AR5K_SREV_RAD_2317	0x80
#define AR5K_SREV_RAD_5424	0xa0 /* Mostly same as 5413 */
#define AR5K_SREV_RAD_2425	0xa2
#define AR5K_SREV_RAD_5133	0xc0

#define AR5K_SREV_PHY_5211	0x30
#define AR5K_SREV_PHY_5212	0x41
#define	AR5K_SREV_PHY_5212A	0x42
#define AR5K_SREV_PHY_5212B	0x43
#define AR5K_SREV_PHY_2413	0x45
#define AR5K_SREV_PHY_5413	0x61
#define AR5K_SREV_PHY_2425	0x70

/* TODO add support to mac80211 for vendor-specific rates and modes */

/**
 * DOC: Atheros XR
 *
 * Some of this information is based on Documentation from:
 *
 * http://madwifi-project.org/wiki/ChipsetFeatures/SuperAG
 *
 * Atheros' eXtended Range - range enhancing extension is a modulation scheme
 * that is supposed to double the link distance between an Atheros XR-enabled
 * client device with an Atheros XR-enabled access point. This is achieved
 * by increasing the receiver sensitivity up to, -105dBm, which is about 20dB
 * above what the 802.11 specifications demand. In addition, new (proprietary)
 * data rates are introduced: 3, 2, 1, 0.5 and 0.25 MBit/s.
 *
 * Please note that can you either use XR or TURBO but you cannot use both,
 * they are exclusive.
 *
 * Also note that we do not plan to support XR mode at least for now. You can
 * get a mode similar to XR by using 5MHz bwmode.
 */


/**
 * DOC: Atheros SuperAG
 *
 * In addition to XR we have another modulation scheme called TURBO mode
 * that is supposed to provide a throughput transmission speed up to 40Mbit/s
 * -60Mbit/s at a 108Mbit/s signaling rate achieved through the bonding of two
 * 54Mbit/s 802.11g channels. To use this feature both ends must support it.
 * There is also a distinction between "static" and "dynamic" turbo modes:
 *
 * - Static: is the dumb version: devices set to this mode stick to it until
 *     the mode is turned off.
 *
 * - Dynamic: is the intelligent version, the network decides itself if it
 *     is ok to use turbo. As soon as traffic is detected on adjacent channels
 *     (which would get used in turbo mode), or when a non-turbo station joins
 *     the network, turbo mode won't be used until the situation changes again.
 *     Dynamic mode is achieved by Atheros' Adaptive Radio (AR) feature which
 *     monitors the used radio band in order to decide whether turbo mode may
 *     be used or not.
 *
 * This article claims Super G sticks to bonding of channels 5 and 6 for
 * USA:
 *
 * http://www.pcworld.com/article/id,113428-page,1/article.html
 *
 * The channel bonding seems to be driver specific though.
 *
 * In addition to TURBO modes we also have the following features for even
 * greater speed-up:
 *
 * - Bursting: allows multiple frames to be sent at once, rather than pausing
 *     after each frame. Bursting is a standards-compliant feature that can be
 *     used with any Access Point.
 *
 * - Fast frames: increases the amount of information that can be sent per
 *     frame, also resulting in a reduction of transmission overhead. It is a
 *     proprietary feature that needs to be supported by the Access Point.
 *
 * - Compression: data frames are compressed in real time using a Lempel Ziv
 *     algorithm. This is done transparently. Once this feature is enabled,
 *     compression and decompression takes place inside the chipset, without
 *     putting additional load on the host CPU.
 *
 * As with XR we also don't plan to support SuperAG features for now. You can
 * get a mode similar to TURBO by using 40MHz bwmode.
 */


/**
 * enum ath5k_driver_mode - PHY operation mode
 * @AR5K_MODE_11A: 802.11a
 * @AR5K_MODE_11B: 802.11b
 * @AR5K_MODE_11G: 801.11g
 * @AR5K_MODE_MAX: Used for boundary checks
 *
 * Do not change the order here, we use these as
 * array indices and it also maps EEPROM structures.
 */
enum ath5k_driver_mode {
	AR5K_MODE_11A		=	0,
	AR5K_MODE_11B		=	1,
	AR5K_MODE_11G		=	2,
	AR5K_MODE_MAX		=	3
};

/**
 * enum ath5k_ant_mode - Antenna operation mode
 * @AR5K_ANTMODE_DEFAULT: Default antenna setup
 * @AR5K_ANTMODE_FIXED_A: Only antenna A is present
 * @AR5K_ANTMODE_FIXED_B: Only antenna B is present
 * @AR5K_ANTMODE_SINGLE_AP: STA locked on a single ap
 * @AR5K_ANTMODE_SECTOR_AP: AP with tx antenna set on tx desc
 * @AR5K_ANTMODE_SECTOR_STA: STA with tx antenna set on tx desc
 * @AR5K_ANTMODE_DEBUG: Debug mode -A -> Rx, B-> Tx-
 * @AR5K_ANTMODE_MAX: Used for boundary checks
 *
 * For more infos on antenna control check out phy.c
 */
enum ath5k_ant_mode {
	AR5K_ANTMODE_DEFAULT	= 0,
	AR5K_ANTMODE_FIXED_A	= 1,
	AR5K_ANTMODE_FIXED_B	= 2,
	AR5K_ANTMODE_SINGLE_AP	= 3,
	AR5K_ANTMODE_SECTOR_AP	= 4,
	AR5K_ANTMODE_SECTOR_STA	= 5,
	AR5K_ANTMODE_DEBUG	= 6,
	AR5K_ANTMODE_MAX,
};

/**
 * enum ath5k_bw_mode - Bandwidth operation mode
 * @AR5K_BWMODE_DEFAULT: 20MHz, default operation
 * @AR5K_BWMODE_5MHZ: Quarter rate
 * @AR5K_BWMODE_10MHZ: Half rate
 * @AR5K_BWMODE_40MHZ: Turbo
 */
enum ath5k_bw_mode {
	AR5K_BWMODE_DEFAULT	= 0,
	AR5K_BWMODE_5MHZ	= 1,
	AR5K_BWMODE_10MHZ	= 2,
	AR5K_BWMODE_40MHZ	= 3
};



/****************\
  TX DEFINITIONS
\****************/

/**
 * struct ath5k_tx_status - TX Status descriptor
 * @ts_seqnum: Sequence number
 * @ts_tstamp: Timestamp
 * @ts_status: Status code
 * @ts_final_idx: Final transmission series index
 * @ts_final_retry: Final retry count
 * @ts_rssi: RSSI for received ACK
 * @ts_shortretry: Short retry count
 * @ts_virtcol: Virtual collision count
 * @ts_antenna: Antenna used
 *
 * TX status descriptor gets filled by the hw
 * on each transmission attempt.
 */
struct ath5k_tx_status {
	u16	ts_seqnum;
	u16	ts_tstamp;
	u8	ts_status;
	u8	ts_final_idx;
	u8	ts_final_retry;
	s8	ts_rssi;
	u8	ts_shortretry;
	u8	ts_virtcol;
	u8	ts_antenna;
};

#define AR5K_TXSTAT_ALTRATE	0x80
#define AR5K_TXERR_XRETRY	0x01
#define AR5K_TXERR_FILT		0x02
#define AR5K_TXERR_FIFO		0x04

/**
 * enum ath5k_tx_queue - Queue types used to classify tx queues.
 * @AR5K_TX_QUEUE_INACTIVE: q is unused -- see ath5k_hw_release_tx_queue
 * @AR5K_TX_QUEUE_DATA: A normal data queue
 * @AR5K_TX_QUEUE_BEACON: The beacon queue
 * @AR5K_TX_QUEUE_CAB: The after-beacon queue
 * @AR5K_TX_QUEUE_UAPSD: Unscheduled Automatic Power Save Delivery queue
 */
enum ath5k_tx_queue {
	AR5K_TX_QUEUE_INACTIVE = 0,
	AR5K_TX_QUEUE_DATA,
	AR5K_TX_QUEUE_BEACON,
	AR5K_TX_QUEUE_CAB,
	AR5K_TX_QUEUE_UAPSD,
};

#define	AR5K_NUM_TX_QUEUES		10
#define	AR5K_NUM_TX_QUEUES_NOQCU	2

/**
 * enum ath5k_tx_queue_subtype - Queue sub-types to classify normal data queues
 * @AR5K_WME_AC_BK: Background traffic
 * @AR5K_WME_AC_BE: Best-effort (normal) traffic
 * @AR5K_WME_AC_VI: Video traffic
 * @AR5K_WME_AC_VO: Voice traffic
 *
 * These are the 4 Access Categories as defined in
 * WME spec. 0 is the lowest priority and 4 is the
 * highest. Normal data that hasn't been classified
 * goes to the Best Effort AC.
 */
enum ath5k_tx_queue_subtype {
	AR5K_WME_AC_BK = 0,
	AR5K_WME_AC_BE,
	AR5K_WME_AC_VI,
	AR5K_WME_AC_VO,
};

/**
 * enum ath5k_tx_queue_id - Queue ID numbers as returned by the hw functions
 * @AR5K_TX_QUEUE_ID_NOQCU_DATA: Data queue on AR5210 (no QCU available)
 * @AR5K_TX_QUEUE_ID_NOQCU_BEACON: Beacon queue on AR5210 (no QCU available)
 * @AR5K_TX_QUEUE_ID_DATA_MIN: Data queue min index
 * @AR5K_TX_QUEUE_ID_DATA_MAX: Data queue max index
 * @AR5K_TX_QUEUE_ID_CAB: Content after beacon queue
 * @AR5K_TX_QUEUE_ID_BEACON: Beacon queue
 * @AR5K_TX_QUEUE_ID_UAPSD: Urgent Automatic Power Save Delivery,
 *
 * Each number represents a hw queue. If hw does not support hw queues
 * (eg 5210) all data goes in one queue.
 */
enum ath5k_tx_queue_id {
	AR5K_TX_QUEUE_ID_NOQCU_DATA	= 0,
	AR5K_TX_QUEUE_ID_NOQCU_BEACON	= 1,
	AR5K_TX_QUEUE_ID_DATA_MIN	= 0,
	AR5K_TX_QUEUE_ID_DATA_MAX	= 3,
	AR5K_TX_QUEUE_ID_UAPSD		= 7,
	AR5K_TX_QUEUE_ID_CAB		= 8,
	AR5K_TX_QUEUE_ID_BEACON		= 9,
};

/*
 * Flags to set hw queue's parameters...
 */
#define AR5K_TXQ_FLAG_TXOKINT_ENABLE		0x0001	/* Enable TXOK interrupt */
#define AR5K_TXQ_FLAG_TXERRINT_ENABLE		0x0002	/* Enable TXERR interrupt */
#define AR5K_TXQ_FLAG_TXEOLINT_ENABLE		0x0004	/* Enable TXEOL interrupt -not used- */
#define AR5K_TXQ_FLAG_TXDESCINT_ENABLE		0x0008	/* Enable TXDESC interrupt -not used- */
#define AR5K_TXQ_FLAG_TXURNINT_ENABLE		0x0010	/* Enable TXURN interrupt */
#define AR5K_TXQ_FLAG_CBRORNINT_ENABLE		0x0020	/* Enable CBRORN interrupt */
#define AR5K_TXQ_FLAG_CBRURNINT_ENABLE		0x0040	/* Enable CBRURN interrupt */
#define AR5K_TXQ_FLAG_QTRIGINT_ENABLE		0x0080	/* Enable QTRIG interrupt */
#define AR5K_TXQ_FLAG_TXNOFRMINT_ENABLE		0x0100	/* Enable TXNOFRM interrupt */
#define AR5K_TXQ_FLAG_BACKOFF_DISABLE		0x0200	/* Disable random post-backoff */
#define AR5K_TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE	0x0300	/* Enable ready time expiry policy (?)*/
#define AR5K_TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE	0x0800	/* Enable backoff while bursting */
#define AR5K_TXQ_FLAG_POST_FR_BKOFF_DIS		0x1000	/* Disable backoff while bursting */
#define AR5K_TXQ_FLAG_COMPRESSION_ENABLE	0x2000	/* Enable hw compression -not implemented-*/

/**
 * struct ath5k_txq - Transmit queue state
 * @qnum: Hardware q number
 * @link: Link ptr in last TX desc
 * @q: Transmit queue (&struct list_head)
 * @lock: Lock on q and link
 * @setup: Is the queue configured
 * @txq_len:Number of queued buffers
 * @txq_max: Max allowed num of queued buffers
 * @txq_poll_mark: Used to check if queue got stuck
 * @txq_stuck: Queue stuck counter
 *
 * One of these exists for each hardware transmit queue.
 * Packets sent to us from above are assigned to queues based
 * on their priority.  Not all devices support a complete set
 * of hardware transmit queues. For those devices the array
 * sc_ac2q will map multiple priorities to fewer hardware queues
 * (typically all to one hardware queue).
 */
struct ath5k_txq {
	unsigned int		qnum;
	u32			*link;
	struct list_head	q;
	spinlock_t		lock;
	bool			setup;
	int			txq_len;
	int			txq_max;
	bool			txq_poll_mark;
	unsigned int		txq_stuck;
};

/**
 * struct ath5k_txq_info - A struct to hold TX queue's parameters
 * @tqi_type: One of enum ath5k_tx_queue
 * @tqi_subtype: One of enum ath5k_tx_queue_subtype
 * @tqi_flags: TX queue flags (see above)
 * @tqi_aifs: Arbitrated Inter-frame Space
 * @tqi_cw_min: Minimum Contention Window
 * @tqi_cw_max: Maximum Contention Window
 * @tqi_cbr_period: Constant bit rate period
 * @tqi_ready_time: Time queue waits after an event when RDYTIME is enabled
 */
struct ath5k_txq_info {
	enum ath5k_tx_queue tqi_type;
	enum ath5k_tx_queue_subtype tqi_subtype;
	u16	tqi_flags;
	u8	tqi_aifs;
	u16	tqi_cw_min;
	u16	tqi_cw_max;
	u32	tqi_cbr_period;
	u32	tqi_cbr_overflow_limit;
	u32	tqi_burst_time;
	u32	tqi_ready_time;
};

/**
 * enum ath5k_pkt_type - Transmit packet types
 * @AR5K_PKT_TYPE_NORMAL: Normal data
 * @AR5K_PKT_TYPE_ATIM: ATIM
 * @AR5K_PKT_TYPE_PSPOLL: PS-Poll
 * @AR5K_PKT_TYPE_BEACON: Beacon
 * @AR5K_PKT_TYPE_PROBE_RESP: Probe response
 * @AR5K_PKT_TYPE_PIFS: PIFS
 * Used on tx control descriptor
 */
enum ath5k_pkt_type {
	AR5K_PKT_TYPE_NORMAL		= 0,
	AR5K_PKT_TYPE_ATIM		= 1,
	AR5K_PKT_TYPE_PSPOLL		= 2,
	AR5K_PKT_TYPE_BEACON		= 3,
	AR5K_PKT_TYPE_PROBE_RESP	= 4,
	AR5K_PKT_TYPE_PIFS		= 5,
};

/*
 * TX power and TPC settings
 */
#define AR5K_TXPOWER_OFDM(_r, _v)	(			\
	((0 & 1) << ((_v) + 6)) |				\
	(((ah->ah_txpower.txp_rates_power_table[(_r)]) & 0x3f) << (_v))	\
)

#define AR5K_TXPOWER_CCK(_r, _v)	(			\
	(ah->ah_txpower.txp_rates_power_table[(_r)] & 0x3f) << (_v)	\
)



/****************\
  RX DEFINITIONS
\****************/

/**
 * struct ath5k_rx_status - RX Status descriptor
 * @rs_datalen: Data length
 * @rs_tstamp: Timestamp
 * @rs_status: Status code
 * @rs_phyerr: PHY error mask
 * @rs_rssi: RSSI in 0.5dbm units
 * @rs_keyix: Index to the key used for decrypting
 * @rs_rate: Rate used to decode the frame
 * @rs_antenna: Antenna used to receive the frame
 * @rs_more: Indicates this is a frame fragment (Fast frames)
 */
struct ath5k_rx_status {
	u16	rs_datalen;
	u16	rs_tstamp;
	u8	rs_status;
	u8	rs_phyerr;
	s8	rs_rssi;
	u8	rs_keyix;
	u8	rs_rate;
	u8	rs_antenna;
	u8	rs_more;
};

#define AR5K_RXERR_CRC		0x01
#define AR5K_RXERR_PHY		0x02
#define AR5K_RXERR_FIFO		0x04
#define AR5K_RXERR_DECRYPT	0x08
#define AR5K_RXERR_MIC		0x10
#define AR5K_RXKEYIX_INVALID	((u8) -1)
#define AR5K_TXKEYIX_INVALID	((u32) -1)


/**************************\
 BEACON TIMERS DEFINITIONS
\**************************/

#define AR5K_BEACON_PERIOD	0x0000ffff
#define AR5K_BEACON_ENA		0x00800000 /*enable beacon xmit*/
#define AR5K_BEACON_RESET_TSF	0x01000000 /*force a TSF reset*/


/*
 * TSF to TU conversion:
 *
 * TSF is a 64bit value in usec (microseconds).
 * TU is a 32bit value and defined by IEEE802.11 (page 6) as "A measurement of
 * time equal to 1024 usec", so it's roughly milliseconds (usec / 1024).
 */
#define TSF_TO_TU(_tsf) (u32)((_tsf) >> 10)



/*******************************\
  GAIN OPTIMIZATION DEFINITIONS
\*******************************/

/**
 * enum ath5k_rfgain - RF Gain optimization engine state
 * @AR5K_RFGAIN_INACTIVE: Engine disabled
 * @AR5K_RFGAIN_ACTIVE: Probe active
 * @AR5K_RFGAIN_READ_REQUESTED: Probe requested
 * @AR5K_RFGAIN_NEED_CHANGE: Gain_F needs change
 */
enum ath5k_rfgain {
	AR5K_RFGAIN_INACTIVE = 0,
	AR5K_RFGAIN_ACTIVE,
	AR5K_RFGAIN_READ_REQUESTED,
	AR5K_RFGAIN_NEED_CHANGE,
};

/**
 * struct ath5k_gain - RF Gain optimization engine state data
 * @g_step_idx: Current step index
 * @g_current: Current gain
 * @g_target: Target gain
 * @g_low: Low gain boundary
 * @g_high: High gain boundary
 * @g_f_corr: Gain_F correction
 * @g_state: One of enum ath5k_rfgain
 */
struct ath5k_gain {
	u8			g_step_idx;
	u8			g_current;
	u8			g_target;
	u8			g_low;
	u8			g_high;
	u8			g_f_corr;
	u8			g_state;
};



/********************\
  COMMON DEFINITIONS
\********************/

#define AR5K_SLOT_TIME_9	396
#define AR5K_SLOT_TIME_20	880
#define AR5K_SLOT_TIME_MAX	0xffff

/**
 * struct ath5k_athchan_2ghz - 2GHz to 5GHZ map for RF5111
 * @a2_flags: Channel flags (internal)
 * @a2_athchan: HW channel number (internal)
 *
 * This structure is used to map 2GHz channels to
 * 5GHz Atheros channels on 2111 frequency converter
 * that comes together with RF5111
 * TODO: Clean up
 */
struct ath5k_athchan_2ghz {
	u32	a2_flags;
	u16	a2_athchan;
};

/**
 * enum ath5k_dmasize -  DMA size definitions (2^(n+2))
 * @AR5K_DMASIZE_4B: 4Bytes
 * @AR5K_DMASIZE_8B: 8Bytes
 * @AR5K_DMASIZE_16B: 16Bytes
 * @AR5K_DMASIZE_32B: 32Bytes
 * @AR5K_DMASIZE_64B: 64Bytes (Default)
 * @AR5K_DMASIZE_128B: 128Bytes
 * @AR5K_DMASIZE_256B: 256Bytes
 * @AR5K_DMASIZE_512B: 512Bytes
 *
 * These are used to set DMA burst size on hw
 *
 * Note: Some platforms can't handle more than 4Bytes
 * be careful on embedded boards.
 */
enum ath5k_dmasize {
	AR5K_DMASIZE_4B	= 0,
	AR5K_DMASIZE_8B,
	AR5K_DMASIZE_16B,
	AR5K_DMASIZE_32B,
	AR5K_DMASIZE_64B,
	AR5K_DMASIZE_128B,
	AR5K_DMASIZE_256B,
	AR5K_DMASIZE_512B
};



/******************\
  RATE DEFINITIONS
\******************/

/**
 * DOC: Rate codes
 *
 * Seems the ar5xxx hardware supports up to 32 rates, indexed by 1-32.
 *
 * The rate code is used to get the RX rate or set the TX rate on the
 * hardware descriptors. It is also used for internal modulation control
 * and settings.
 *
 * This is the hardware rate map we are aware of (html unfriendly):
 *
 * Rate code	Rate (Kbps)
 * ---------	-----------
 * 0x01		 3000 (XR)
 * 0x02		 1000 (XR)
 * 0x03		  250 (XR)
 * 0x04 - 05	-Reserved-
 * 0x06		 2000 (XR)
 * 0x07		  500 (XR)
 * 0x08		48000 (OFDM)
 * 0x09		24000 (OFDM)
 * 0x0A		12000 (OFDM)
 * 0x0B		 6000 (OFDM)
 * 0x0C		54000 (OFDM)
 * 0x0D		36000 (OFDM)
 * 0x0E		18000 (OFDM)
 * 0x0F		 9000 (OFDM)
 * 0x10 - 17	-Reserved-
 * 0x18		11000L (CCK)
 * 0x19		 5500L (CCK)
 * 0x1A		 2000L (CCK)
 * 0x1B		 1000L (CCK)
 * 0x1C		11000S (CCK)
 * 0x1D		 5500S (CCK)
 * 0x1E		 2000S (CCK)
 * 0x1F		-Reserved-
 *
 * "S" indicates CCK rates with short preamble and "L" with long preamble.
 *
 * AR5211 has different rate codes for CCK (802.11B) rates. It only uses the
 * lowest 4 bits, so they are the same as above with a 0xF mask.
 * (0xB, 0xA, 0x9 and 0x8 for 1M, 2M, 5.5M and 11M).
 * We handle this in ath5k_setup_bands().
 */
#define AR5K_MAX_RATES 32

/* B */
#define ATH5K_RATE_CODE_1M	0x1B
#define ATH5K_RATE_CODE_2M	0x1A
#define ATH5K_RATE_CODE_5_5M	0x19
#define ATH5K_RATE_CODE_11M	0x18
/* A and G */
#define ATH5K_RATE_CODE_6M	0x0B
#define ATH5K_RATE_CODE_9M	0x0F
#define ATH5K_RATE_CODE_12M	0x0A
#define ATH5K_RATE_CODE_18M	0x0E
#define ATH5K_RATE_CODE_24M	0x09
#define ATH5K_RATE_CODE_36M	0x0D
#define ATH5K_RATE_CODE_48M	0x08
#define ATH5K_RATE_CODE_54M	0x0C

/* Adding this flag to rate_code on B rates
 * enables short preamble */
#define AR5K_SET_SHORT_PREAMBLE 0x04

/*
 * Crypto definitions
 */

#define AR5K_KEYCACHE_SIZE	8
extern bool ath5k_modparam_nohwcrypt;

/***********************\
 HW RELATED DEFINITIONS
\***********************/

/*
 * Misc definitions
 */
#define	AR5K_RSSI_EP_MULTIPLIER	(1 << 7)

#define AR5K_ASSERT_ENTRY(_e, _s) do {		\
	if (_e >= _s)				\
		return false;			\
} while (0)

/*
 * Hardware interrupt abstraction
 */

/**
 * enum ath5k_int - Hardware interrupt masks helpers
 * @AR5K_INT_RXOK: Frame successfully received
 * @AR5K_INT_RXDESC: Request RX descriptor/Read RX descriptor
 * @AR5K_INT_RXERR: Frame reception failed
 * @AR5K_INT_RXNOFRM: No frame received within a specified time period
 * @AR5K_INT_RXEOL: Reached "End Of List", means we need more RX descriptors
 * @AR5K_INT_RXORN: Indicates we got RX FIFO overrun. Note that Rx overrun is
 *		not always fatal, on some chips we can continue operation
 *		without resetting the card, that's why %AR5K_INT_FATAL is not
 *		common for all chips.
 * @AR5K_INT_RX_ALL: Mask to identify all RX related interrupts
 *
 * @AR5K_INT_TXOK: Frame transmission success
 * @AR5K_INT_TXDESC: Request TX descriptor/Read TX status descriptor
 * @AR5K_INT_TXERR: Frame transmission failure
 * @AR5K_INT_TXEOL: Received End Of List for VEOL (Virtual End Of List). The
 *		Queue Control Unit (QCU) signals an EOL interrupt only if a
 *		descriptor's LinkPtr is NULL. For more details, refer to:
 *		"http://www.freepatentsonline.com/20030225739.html"
 * @AR5K_INT_TXNOFRM: No frame was transmitted within a specified time period
 * @AR5K_INT_TXURN: Indicates we got TX FIFO underrun. In such case we should
 *		increase the TX trigger threshold.
 * @AR5K_INT_TX_ALL: Mask to identify all TX related interrupts
 *
 * @AR5K_INT_MIB: Indicates the either Management Information Base counters or
 *		one of the PHY error counters reached the maximum value and
 *		should be read and cleared.
 * @AR5K_INT_SWI: Software triggered interrupt.
 * @AR5K_INT_RXPHY: RX PHY Error
 * @AR5K_INT_RXKCM: RX Key cache miss
 * @AR5K_INT_SWBA: SoftWare Beacon Alert - indicates its time to send a
 *		beacon that must be handled in software. The alternative is if
 *		you have VEOL support, in that case you let the hardware deal
 *		with things.
 * @AR5K_INT_BRSSI: Beacon received with an RSSI value below our threshold
 * @AR5K_INT_BMISS: If in STA mode this indicates we have stopped seeing
 *		beacons from the AP have associated with, we should probably
 *		try to reassociate. When in IBSS mode this might mean we have
 *		not received any beacons from any local stations. Note that
 *		every station in an IBSS schedules to send beacons at the
 *		Target Beacon Transmission Time (TBTT) with a random backoff.
 * @AR5K_INT_BNR: Beacon queue got triggered (DMA beacon alert) while empty.
 * @AR5K_INT_TIM: Beacon with local station's TIM bit set
 * @AR5K_INT_DTIM: Beacon with DTIM bit and zero DTIM count received
 * @AR5K_INT_DTIM_SYNC: DTIM sync lost
 * @AR5K_INT_GPIO: GPIO interrupt is used for RF Kill switches connected to
 *		our GPIO pins.
 * @AR5K_INT_BCN_TIMEOUT: Beacon timeout, we waited after TBTT but got noting
 * @AR5K_INT_CAB_TIMEOUT: We waited for CAB traffic after the beacon but got
 *		nothing or an incomplete CAB frame sequence.
 * @AR5K_INT_QCBRORN: A queue got it's CBR counter expired
 * @AR5K_INT_QCBRURN: A queue got triggered wile empty
 * @AR5K_INT_QTRIG: A queue got triggered
 *
 * @AR5K_INT_FATAL: Fatal errors were encountered, typically caused by bus/DMA
 *		errors. Indicates we need to reset the card.
 * @AR5K_INT_GLOBAL: Used to clear and set the IER
 * @AR5K_INT_NOCARD: Signals the card has been removed
 * @AR5K_INT_COMMON: Common interrupts shared among MACs with the same
 *		bit value
 *
 * These are mapped to take advantage of some common bits
 * between the MACs, to be able to set intr properties
 * easier. Some of them are not used yet inside hw.c. Most map
 * to the respective hw interrupt value as they are common among different
 * MACs.
 */
enum ath5k_int {
	AR5K_INT_RXOK	= 0x00000001,
	AR5K_INT_RXDESC	= 0x00000002,
	AR5K_INT_RXERR	= 0x00000004,
	AR5K_INT_RXNOFRM = 0x00000008,
	AR5K_INT_RXEOL	= 0x00000010,
	AR5K_INT_RXORN	= 0x00000020,
	AR5K_INT_TXOK	= 0x00000040,
	AR5K_INT_TXDESC	= 0x00000080,
	AR5K_INT_TXERR	= 0x00000100,
	AR5K_INT_TXNOFRM = 0x00000200,
	AR5K_INT_TXEOL	= 0x00000400,
	AR5K_INT_TXURN	= 0x00000800,
	AR5K_INT_MIB	= 0x00001000,
	AR5K_INT_SWI	= 0x00002000,
	AR5K_INT_RXPHY	= 0x00004000,
	AR5K_INT_RXKCM	= 0x00008000,
	AR5K_INT_SWBA	= 0x00010000,
	AR5K_INT_BRSSI	= 0x00020000,
	AR5K_INT_BMISS	= 0x00040000,
	AR5K_INT_FATAL	= 0x00080000, /* Non common */
	AR5K_INT_BNR	= 0x00100000, /* Non common */
	AR5K_INT_TIM	= 0x00200000, /* Non common */
	AR5K_INT_DTIM	= 0x00400000, /* Non common */
	AR5K_INT_DTIM_SYNC =	0x00800000, /* Non common */
	AR5K_INT_GPIO	=	0x01000000,
	AR5K_INT_BCN_TIMEOUT =	0x02000000, /* Non common */
	AR5K_INT_CAB_TIMEOUT =	0x04000000, /* Non common */
	AR5K_INT_QCBRORN =	0x08000000, /* Non common */
	AR5K_INT_QCBRURN =	0x10000000, /* Non common */
	AR5K_INT_QTRIG	=	0x20000000, /* Non common */
	AR5K_INT_GLOBAL =	0x80000000,

	AR5K_INT_TX_ALL = AR5K_INT_TXOK
		| AR5K_INT_TXDESC
		| AR5K_INT_TXERR
		| AR5K_INT_TXNOFRM
		| AR5K_INT_TXEOL
		| AR5K_INT_TXURN,

	AR5K_INT_RX_ALL = AR5K_INT_RXOK
		| AR5K_INT_RXDESC
		| AR5K_INT_RXERR
		| AR5K_INT_RXNOFRM
		| AR5K_INT_RXEOL
		| AR5K_INT_RXORN,

	AR5K_INT_COMMON  = AR5K_INT_RXOK
		| AR5K_INT_RXDESC
		| AR5K_INT_RXERR
		| AR5K_INT_RXNOFRM
		| AR5K_INT_RXEOL
		| AR5K_INT_RXORN
		| AR5K_INT_TXOK
		| AR5K_INT_TXDESC
		| AR5K_INT_TXERR
		| AR5K_INT_TXNOFRM
		| AR5K_INT_TXEOL
		| AR5K_INT_TXURN
		| AR5K_INT_MIB
		| AR5K_INT_SWI
		| AR5K_INT_RXPHY
		| AR5K_INT_RXKCM
		| AR5K_INT_SWBA
		| AR5K_INT_BRSSI
		| AR5K_INT_BMISS
		| AR5K_INT_GPIO
		| AR5K_INT_GLOBAL,

	AR5K_INT_NOCARD	= 0xffffffff
};

/**
 * enum ath5k_calibration_mask - Mask which calibration is active at the moment
 * @AR5K_CALIBRATION_FULL: Full calibration (AGC + SHORT)
 * @AR5K_CALIBRATION_SHORT: Short calibration (NF + I/Q)
 * @AR5K_CALIBRATION_NF: Noise Floor calibration
 * @AR5K_CALIBRATION_ANI: Adaptive Noise Immunity
 */
enum ath5k_calibration_mask {
	AR5K_CALIBRATION_FULL = 0x01,
	AR5K_CALIBRATION_SHORT = 0x02,
	AR5K_CALIBRATION_NF = 0x04,
	AR5K_CALIBRATION_ANI = 0x08,
};

/**
 * enum ath5k_power_mode - Power management modes
 * @AR5K_PM_UNDEFINED: Undefined
 * @AR5K_PM_AUTO: Allow card to sleep if possible
 * @AR5K_PM_AWAKE: Force card to wake up
 * @AR5K_PM_FULL_SLEEP: Force card to full sleep (DANGEROUS)
 * @AR5K_PM_NETWORK_SLEEP: Allow to sleep for a specified duration
 *
 * Currently only PM_AWAKE is used, FULL_SLEEP and NETWORK_SLEEP/AUTO
 * are also known to have problems on some cards. This is not a big
 * problem though because we can have almost the same effect as
 * FULL_SLEEP by putting card on warm reset (it's almost powered down).
 */
enum ath5k_power_mode {
	AR5K_PM_UNDEFINED = 0,
	AR5K_PM_AUTO,
	AR5K_PM_AWAKE,
	AR5K_PM_FULL_SLEEP,
	AR5K_PM_NETWORK_SLEEP,
};

/*
 * These match net80211 definitions (not used in
 * mac80211).
 * TODO: Clean this up
 */
#define AR5K_LED_INIT	0 /*IEEE80211_S_INIT*/
#define AR5K_LED_SCAN	1 /*IEEE80211_S_SCAN*/
#define AR5K_LED_AUTH	2 /*IEEE80211_S_AUTH*/
#define AR5K_LED_ASSOC	3 /*IEEE80211_S_ASSOC*/
#define AR5K_LED_RUN	4 /*IEEE80211_S_RUN*/

/* GPIO-controlled software LED */
#define AR5K_SOFTLED_PIN	0
#define AR5K_SOFTLED_ON		0
#define AR5K_SOFTLED_OFF	1


/* XXX: we *may* move cap_range stuff to struct wiphy */
struct ath5k_capabilities {
	/*
	 * Supported PHY modes
	 * (ie. AR5K_MODE_11A, AR5K_MODE_11B, ...)
	 */
	DECLARE_BITMAP(cap_mode, AR5K_MODE_MAX);

	/*
	 * Frequency range (without regulation restrictions)
	 */
	struct {
		u16	range_2ghz_min;
		u16	range_2ghz_max;
		u16	range_5ghz_min;
		u16	range_5ghz_max;
	} cap_range;

	/*
	 * Values stored in the EEPROM (some of them...)
	 */
	struct ath5k_eeprom_info	cap_eeprom;

	/*
	 * Queue information
	 */
	struct {
		u8	q_tx_num;
	} cap_queues;

	bool cap_has_phyerr_counters;
	bool cap_has_mrr_support;
	bool cap_needs_2GHz_ovr;
};

/* size of noise floor history (keep it a power of two) */
#define ATH5K_NF_CAL_HIST_MAX	8
struct ath5k_nfcal_hist {
	s16 index;				/* current index into nfval */
	s16 nfval[ATH5K_NF_CAL_HIST_MAX];	/* last few noise floors */
};

#define ATH5K_LED_MAX_NAME_LEN 31

/*
 * State for LED triggers
 */
struct ath5k_led {
	char name[ATH5K_LED_MAX_NAME_LEN + 1];	/* name of the LED in sysfs */
	struct ath5k_hw *ah;			/* driver state */
	struct led_classdev led_dev;		/* led classdev */
};

/* Rfkill */
struct ath5k_rfkill {
	/* GPIO PIN for rfkill */
	u16 gpio;
	/* polarity of rfkill GPIO PIN */
	bool polarity;
	/* RFKILL toggle tasklet */
	struct tasklet_struct toggleq;
};

/* statistics */
struct ath5k_statistics {
	/* antenna use */
	unsigned int antenna_rx[5];	/* frames count per antenna RX */
	unsigned int antenna_tx[5];	/* frames count per antenna TX */

	/* frame errors */
	unsigned int rx_all_count;	/* all RX frames, including errors */
	unsigned int tx_all_count;	/* all TX frames, including errors */
	unsigned int rx_bytes_count;	/* all RX bytes, including errored pkts
					 * and the MAC headers for each packet
					 */
	unsigned int tx_bytes_count;	/* all TX bytes, including errored pkts
					 * and the MAC headers and padding for
					 * each packet.
					 */
	unsigned int rxerr_crc;
	unsigned int rxerr_phy;
	unsigned int rxerr_phy_code[32];
	unsigned int rxerr_fifo;
	unsigned int rxerr_decrypt;
	unsigned int rxerr_mic;
	unsigned int rxerr_proc;
	unsigned int rxerr_jumbo;
	unsigned int txerr_retry;
	unsigned int txerr_fifo;
	unsigned int txerr_filt;

	/* MIB counters */
	unsigned int ack_fail;
	unsigned int rts_fail;
	unsigned int rts_ok;
	unsigned int fcs_error;
	unsigned int beacons;

	unsigned int mib_intr;
	unsigned int rxorn_intr;
	unsigned int rxeol_intr;
};

/*
 * Misc defines
 */

#define AR5K_MAX_GPIO		10
#define AR5K_MAX_RF_BANKS	8

#if CHAN_DEBUG
#define ATH_CHAN_MAX	(26 + 26 + 26 + 200 + 200)
#else
#define ATH_CHAN_MAX	(14 + 14 + 14 + 252 + 20)
#endif

#define	ATH_RXBUF	40		/* number of RX buffers */
#define	ATH_TXBUF	200		/* number of TX buffers */
#define ATH_BCBUF	4		/* number of beacon buffers */
#define ATH5K_TXQ_LEN_MAX	(ATH_TXBUF / 4)		/* bufs per queue */
#define ATH5K_TXQ_LEN_LOW	(ATH5K_TXQ_LEN_MAX / 2)	/* low mark */

/* Driver state associated with an instance of a device */
struct ath5k_hw {
	struct ath_common       common;

	struct pci_dev		*pdev;
	struct device		*dev;		/* for dma mapping */
	int irq;
	u16 devid;
	void __iomem		*iobase;	/* address of the device */
	struct mutex		lock;		/* dev-level lock */
	struct ieee80211_hw	*hw;		/* IEEE 802.11 common */
	struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
	struct ieee80211_channel channels[ATH_CHAN_MAX];
	struct ieee80211_rate	rates[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
	s8			rate_idx[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
	enum nl80211_iftype	opmode;

#ifdef CONFIG_ATH5K_DEBUG
	struct ath5k_dbg_info	debug;		/* debug info */
#endif /* CONFIG_ATH5K_DEBUG */

	struct ath5k_buf	*bufptr;	/* allocated buffer ptr */
	struct ath5k_desc	*desc;		/* TX/RX descriptors */
	dma_addr_t		desc_daddr;	/* DMA (physical) address */
	size_t			desc_len;	/* size of TX/RX descriptors */

	DECLARE_BITMAP(status, 4);
#define ATH_STAT_INVALID	0		/* disable hardware accesses */
#define ATH_STAT_PROMISC	1
#define ATH_STAT_LEDSOFT	2		/* enable LED gpio status */
#define ATH_STAT_STARTED	3		/* opened & irqs enabled */

	unsigned int		filter_flags;	/* HW flags, AR5K_RX_FILTER_* */
	struct ieee80211_channel *curchan;	/* current h/w channel */

	u16			nvifs;

	enum ath5k_int		imask;		/* interrupt mask copy */

	spinlock_t		irqlock;
	bool			rx_pending;	/* rx tasklet pending */
	bool			tx_pending;	/* tx tasklet pending */

	u8			bssidmask[ETH_ALEN];

	unsigned int		led_pin,	/* GPIO pin for driving LED */
				led_on;		/* pin setting for LED on */

	struct work_struct	reset_work;	/* deferred chip reset */
	struct work_struct	calib_work;	/* deferred phy calibration */

	struct list_head	rxbuf;		/* receive buffer */
	spinlock_t		rxbuflock;
	u32			*rxlink;	/* link ptr in last RX desc */
	struct tasklet_struct	rxtq;		/* rx intr tasklet */
	struct ath5k_led	rx_led;		/* rx led */

	struct list_head	txbuf;		/* transmit buffer */
	spinlock_t		txbuflock;
	unsigned int		txbuf_len;	/* buf count in txbuf list */
	struct ath5k_txq	txqs[AR5K_NUM_TX_QUEUES];	/* tx queues */
	struct tasklet_struct	txtq;		/* tx intr tasklet */
	struct ath5k_led	tx_led;		/* tx led */

	struct ath5k_rfkill	rf_kill;

	spinlock_t		block;		/* protects beacon */
	struct tasklet_struct	beacontq;	/* beacon intr tasklet */
	struct list_head	bcbuf;		/* beacon buffer */
	struct ieee80211_vif	*bslot[ATH_BCBUF];
	u16			num_ap_vifs;
	u16			num_adhoc_vifs;
	u16			num_mesh_vifs;
	unsigned int		bhalq,		/* SW q for outgoing beacons */
				bmisscount,	/* missed beacon transmits */
				bintval,	/* beacon interval in TU */
				bsent;
	unsigned int		nexttbtt;	/* next beacon time in TU */
	struct ath5k_txq	*cabq;		/* content after beacon */

	int			power_level;	/* Requested tx power in dBm */
	bool			assoc;		/* associate state */
	bool			enable_beacon;	/* true if beacons are on */

	struct ath5k_statistics	stats;

	struct ath5k_ani_state	ani_state;
	struct tasklet_struct	ani_tasklet;	/* ANI calibration */

	struct delayed_work	tx_complete_work;

	struct survey_info	survey;		/* collected survey info */

	enum ath5k_int		ah_imr;

	struct ieee80211_channel *ah_current_channel;
	bool			ah_iq_cal_needed;
	bool			ah_single_chip;

	enum ath5k_version	ah_version;
	enum ath5k_radio	ah_radio;
	u32			ah_mac_srev;
	u16			ah_mac_version;
	u16			ah_phy_revision;
	u16			ah_radio_5ghz_revision;
	u16			ah_radio_2ghz_revision;

#define ah_modes		ah_capabilities.cap_mode
#define ah_ee_version		ah_capabilities.cap_eeprom.ee_version

	u8			ah_retry_long;
	u8			ah_retry_short;

	u32			ah_use_32khz_clock;

	u8			ah_coverage_class;
	bool			ah_ack_bitrate_high;
	u8			ah_bwmode;
	bool			ah_short_slot;

	/* Antenna Control */
	u32			ah_ant_ctl[AR5K_EEPROM_N_MODES][AR5K_ANT_MAX];
	u8			ah_ant_mode;
	u8			ah_tx_ant;
	u8			ah_def_ant;

	struct ath5k_capabilities ah_capabilities;

	struct ath5k_txq_info	ah_txq[AR5K_NUM_TX_QUEUES];
	u32			ah_txq_status;
	u32			ah_txq_imr_txok;
	u32			ah_txq_imr_txerr;
	u32			ah_txq_imr_txurn;
	u32			ah_txq_imr_txdesc;
	u32			ah_txq_imr_txeol;
	u32			ah_txq_imr_cbrorn;
	u32			ah_txq_imr_cbrurn;
	u32			ah_txq_imr_qtrig;
	u32			ah_txq_imr_nofrm;

	u32			ah_txq_isr_txok_all;
	u32			ah_txq_isr_txurn;
	u32			ah_txq_isr_qcborn;
	u32			ah_txq_isr_qcburn;
	u32			ah_txq_isr_qtrig;

	u32			*ah_rf_banks;
	size_t			ah_rf_banks_size;
	size_t			ah_rf_regs_count;
	struct ath5k_gain	ah_gain;
	u8			ah_offset[AR5K_MAX_RF_BANKS];


	struct {
		/* Temporary tables used for interpolation */
		u8		tmpL[AR5K_EEPROM_N_PD_GAINS]
					[AR5K_EEPROM_POWER_TABLE_SIZE];
		u8		tmpR[AR5K_EEPROM_N_PD_GAINS]
					[AR5K_EEPROM_POWER_TABLE_SIZE];
		u8		txp_pd_table[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
		u16		txp_rates_power_table[AR5K_MAX_RATES];
		u8		txp_min_idx;
		bool		txp_tpc;
		/* Values in 0.25dB units */
		s16		txp_min_pwr;
		s16		txp_max_pwr;
		s16		txp_cur_pwr;
		/* Values in 0.5dB units */
		s16		txp_offset;
		s16		txp_ofdm;
		s16		txp_cck_ofdm_gainf_delta;
		/* Value in dB units */
		s16		txp_cck_ofdm_pwr_delta;
		bool		txp_setup;
	} ah_txpower;

	struct ath5k_nfcal_hist ah_nfcal_hist;

	/* average beacon RSSI in our BSS (used by ANI) */
	struct ewma		ah_beacon_rssi_avg;

	/* noise floor from last periodic calibration */
	s32			ah_noise_floor;

	/* Calibration timestamp */
	unsigned long		ah_cal_next_full;
	unsigned long		ah_cal_next_short;
	unsigned long		ah_cal_next_ani;

	/* Calibration mask */
	u8			ah_cal_mask;

	/*
	 * Function pointers
	 */
	int (*ah_setup_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
		unsigned int, unsigned int, int, enum ath5k_pkt_type,
		unsigned int, unsigned int, unsigned int, unsigned int,
		unsigned int, unsigned int, unsigned int, unsigned int);
	int (*ah_proc_tx_desc)(struct ath5k_hw *, struct ath5k_desc *,
		struct ath5k_tx_status *);
	int (*ah_proc_rx_desc)(struct ath5k_hw *, struct ath5k_desc *,
		struct ath5k_rx_status *);
};

struct ath_bus_ops {
	enum ath_bus_type ath_bus_type;
	void (*read_cachesize)(struct ath_common *common, int *csz);
	bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
	int (*eeprom_read_mac)(struct ath5k_hw *ah, u8 *mac);
};

/*
 * Prototypes
 */
extern const struct ieee80211_ops ath5k_hw_ops;

/* Initialization and detach functions */
int ath5k_hw_init(struct ath5k_hw *ah);
void ath5k_hw_deinit(struct ath5k_hw *ah);

int ath5k_sysfs_register(struct ath5k_hw *ah);
void ath5k_sysfs_unregister(struct ath5k_hw *ah);

/*Chip id helper functions */
int ath5k_hw_read_srev(struct ath5k_hw *ah);

/* LED functions */
int ath5k_init_leds(struct ath5k_hw *ah);
void ath5k_led_enable(struct ath5k_hw *ah);
void ath5k_led_off(struct ath5k_hw *ah);
void ath5k_unregister_leds(struct ath5k_hw *ah);


/* Reset Functions */
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, struct ieee80211_channel *channel);
int ath5k_hw_on_hold(struct ath5k_hw *ah);
int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
	   struct ieee80211_channel *channel, bool fast, bool skip_pcu);
int ath5k_hw_register_timeout(struct ath5k_hw *ah, u32 reg, u32 flag, u32 val,
			      bool is_set);
/* Power management functions */


/* Clock rate related functions */
unsigned int ath5k_hw_htoclock(struct ath5k_hw *ah, unsigned int usec);
unsigned int ath5k_hw_clocktoh(struct ath5k_hw *ah, unsigned int clock);
void ath5k_hw_set_clockrate(struct ath5k_hw *ah);


/* DMA Related Functions */
void ath5k_hw_start_rx_dma(struct ath5k_hw *ah);
u32 ath5k_hw_get_rxdp(struct ath5k_hw *ah);
int ath5k_hw_set_rxdp(struct ath5k_hw *ah, u32 phys_addr);
int ath5k_hw_start_tx_dma(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_stop_beacon_queue(struct ath5k_hw *ah, unsigned int queue);
u32 ath5k_hw_get_txdp(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_set_txdp(struct ath5k_hw *ah, unsigned int queue,
				u32 phys_addr);
int ath5k_hw_update_tx_triglevel(struct ath5k_hw *ah, bool increase);
/* Interrupt handling */
bool ath5k_hw_is_intr_pending(struct ath5k_hw *ah);
int ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask);
enum ath5k_int ath5k_hw_set_imr(struct ath5k_hw *ah, enum ath5k_int new_mask);
void ath5k_hw_update_mib_counters(struct ath5k_hw *ah);
/* Init/Stop functions */
void ath5k_hw_dma_init(struct ath5k_hw *ah);
int ath5k_hw_dma_stop(struct ath5k_hw *ah);

/* EEPROM access functions */
int ath5k_eeprom_init(struct ath5k_hw *ah);
void ath5k_eeprom_detach(struct ath5k_hw *ah);


/* Protocol Control Unit Functions */
/* Helpers */
int ath5k_hw_get_frame_duration(struct ath5k_hw *ah, enum ieee80211_band band,
		int len, struct ieee80211_rate *rate, bool shortpre);
unsigned int ath5k_hw_get_default_slottime(struct ath5k_hw *ah);
unsigned int ath5k_hw_get_default_sifs(struct ath5k_hw *ah);
int ath5k_hw_set_opmode(struct ath5k_hw *ah, enum nl80211_iftype opmode);
void ath5k_hw_set_coverage_class(struct ath5k_hw *ah, u8 coverage_class);
/* RX filter control*/
int ath5k_hw_set_lladdr(struct ath5k_hw *ah, const u8 *mac);
void ath5k_hw_set_bssid(struct ath5k_hw *ah);
void ath5k_hw_set_bssid_mask(struct ath5k_hw *ah, const u8 *mask);
void ath5k_hw_set_mcast_filter(struct ath5k_hw *ah, u32 filter0, u32 filter1);
u32 ath5k_hw_get_rx_filter(struct ath5k_hw *ah);
void ath5k_hw_set_rx_filter(struct ath5k_hw *ah, u32 filter);
/* Receive (DRU) start/stop functions */
void ath5k_hw_start_rx_pcu(struct ath5k_hw *ah);
void ath5k_hw_stop_rx_pcu(struct ath5k_hw *ah);
/* Beacon control functions */
u64 ath5k_hw_get_tsf64(struct ath5k_hw *ah);
void ath5k_hw_set_tsf64(struct ath5k_hw *ah, u64 tsf64);
void ath5k_hw_reset_tsf(struct ath5k_hw *ah);
void ath5k_hw_init_beacon_timers(struct ath5k_hw *ah, u32 next_beacon,
							u32 interval);
bool ath5k_hw_check_beacon_timers(struct ath5k_hw *ah, int intval);
/* Init function */
void ath5k_hw_pcu_init(struct ath5k_hw *ah, enum nl80211_iftype op_mode);

/* Queue Control Unit, DFS Control Unit Functions */
int ath5k_hw_get_tx_queueprops(struct ath5k_hw *ah, int queue,
			       struct ath5k_txq_info *queue_info);
int ath5k_hw_set_tx_queueprops(struct ath5k_hw *ah, int queue,
			       const struct ath5k_txq_info *queue_info);
int ath5k_hw_setup_tx_queue(struct ath5k_hw *ah,
			    enum ath5k_tx_queue queue_type,
			    struct ath5k_txq_info *queue_info);
void ath5k_hw_set_tx_retry_limits(struct ath5k_hw *ah,
				  unsigned int queue);
u32 ath5k_hw_num_tx_pending(struct ath5k_hw *ah, unsigned int queue);
void ath5k_hw_release_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue);
int ath5k_hw_set_ifs_intervals(struct ath5k_hw *ah, unsigned int slot_time);
/* Init function */
int ath5k_hw_init_queues(struct ath5k_hw *ah);

/* Hardware Descriptor Functions */
int ath5k_hw_init_desc_functions(struct ath5k_hw *ah);
int ath5k_hw_setup_rx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
			   u32 size, unsigned int flags);
int ath5k_hw_setup_mrr_tx_desc(struct ath5k_hw *ah, struct ath5k_desc *desc,
	unsigned int tx_rate1, u_int tx_tries1, u_int tx_rate2,
	u_int tx_tries2, unsigned int tx_rate3, u_int tx_tries3);


/* GPIO Functions */
void ath5k_hw_set_ledstate(struct ath5k_hw *ah, unsigned int state);
int ath5k_hw_set_gpio_input(struct ath5k_hw *ah, u32 gpio);
int ath5k_hw_set_gpio_output(struct ath5k_hw *ah, u32 gpio);
u32 ath5k_hw_get_gpio(struct ath5k_hw *ah, u32 gpio);
int ath5k_hw_set_gpio(struct ath5k_hw *ah, u32 gpio, u32 val);
void ath5k_hw_set_gpio_intr(struct ath5k_hw *ah, unsigned int gpio,
			    u32 interrupt_level);


/* RFkill Functions */
void ath5k_rfkill_hw_start(struct ath5k_hw *ah);
void ath5k_rfkill_hw_stop(struct ath5k_hw *ah);


/* Misc functions TODO: Cleanup */
int ath5k_hw_set_capabilities(struct ath5k_hw *ah);
int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid, u16 assoc_id);
int ath5k_hw_disable_pspoll(struct ath5k_hw *ah);


/* Initial register settings functions */
int ath5k_hw_write_initvals(struct ath5k_hw *ah, u8 mode, bool change_channel);


/* PHY functions */
/* Misc PHY functions */
u16 ath5k_hw_radio_revision(struct ath5k_hw *ah, enum ieee80211_band band);
int ath5k_hw_phy_disable(struct ath5k_hw *ah);
/* Gain_F optimization */
enum ath5k_rfgain ath5k_hw_gainf_calibrate(struct ath5k_hw *ah);
int ath5k_hw_rfgain_opt_init(struct ath5k_hw *ah);
/* PHY/RF channel functions */
bool ath5k_channel_ok(struct ath5k_hw *ah, struct ieee80211_channel *channel);
/* PHY calibration */
void ath5k_hw_init_nfcal_hist(struct ath5k_hw *ah);
int ath5k_hw_phy_calibrate(struct ath5k_hw *ah,
			   struct ieee80211_channel *channel);
void ath5k_hw_update_noise_floor(struct ath5k_hw *ah);
/* Spur mitigation */
bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw *ah,
				  struct ieee80211_channel *channel);
/* Antenna control */
void ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode);
void ath5k_hw_set_antenna_switch(struct ath5k_hw *ah, u8 ee_mode);
/* TX power setup */
int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower);
/* Init function */
int ath5k_hw_phy_init(struct ath5k_hw *ah, struct ieee80211_channel *channel,
				u8 mode, bool fast);

/*
 * Functions used internally
 */

static inline struct ath_common *ath5k_hw_common(struct ath5k_hw *ah)
{
	return &ah->common;
}

static inline struct ath_regulatory *ath5k_hw_regulatory(struct ath5k_hw *ah)
{
	return &(ath5k_hw_common(ah)->regulatory);
}

#ifdef CONFIG_ATHEROS_AR231X
#define AR5K_AR2315_PCI_BASE	((void __iomem *)0xb0100000)

static inline void __iomem *ath5k_ahb_reg(struct ath5k_hw *ah, u16 reg)
{
	/* On AR2315 and AR2317 the PCI clock domain registers
	 * are outside of the WMAC register space */
	if (unlikely((reg >= 0x4000) && (reg < 0x5000) &&
	    (ah->ah_mac_srev >= AR5K_SREV_AR2315_R6)))
		return AR5K_AR2315_PCI_BASE + reg;

	return ah->iobase + reg;
}

static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
	return ioread32(ath5k_ahb_reg(ah, reg));
}

static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
{
	iowrite32(val, ath5k_ahb_reg(ah, reg));
}

#else

static inline u32 ath5k_hw_reg_read(struct ath5k_hw *ah, u16 reg)
{
	return ioread32(ah->iobase + reg);
}

static inline void ath5k_hw_reg_write(struct ath5k_hw *ah, u32 val, u16 reg)
{
	iowrite32(val, ah->iobase + reg);
}

#endif

static inline enum ath_bus_type ath5k_get_bus_type(struct ath5k_hw *ah)
{
	return ath5k_hw_common(ah)->bus_ops->ath_bus_type;
}

static inline void ath5k_read_cachesize(struct ath_common *common, int *csz)
{
	common->bus_ops->read_cachesize(common, csz);
}

static inline bool ath5k_hw_nvram_read(struct ath5k_hw *ah, u32 off, u16 *data)
{
	struct ath_common *common = ath5k_hw_common(ah);
	return common->bus_ops->eeprom_read(common, off, data);
}

static inline u32 ath5k_hw_bitswap(u32 val, unsigned int bits)
{
	u32 retval = 0, bit, i;

	for (i = 0; i < bits; i++) {
		bit = (val >> i) & 1;
		retval = (retval << 1) | bit;
	}

	return retval;
}

#endif