summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/rtl818x/rtl8180/dev.c
blob: 026d912f516be07e4fb169e0007ff75113e388d0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958

/* Linux device driver for RTL8180 / RTL8185 / RTL8187SE
 *
 * Copyright 2007 Michael Wu <flamingice@sourmilk.net>
 * Copyright 2007,2014 Andrea Merello <andrea.merello@gmail.com>
 *
 * Based on the r8180 driver, which is:
 * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
 *
 * Thanks to Realtek for their support!
 *
 ************************************************************************
 *
 * The driver was extended to the RTL8187SE in 2014 by
 * Andrea Merello <andrea.merello@gmail.com>
 *
 * based also on:
 *  - portions of rtl8187se Linux staging driver, Copyright Realtek corp.
 *    (available in drivers/staging/rtl8187se directory of Linux 3.14)
 *  - other GPL, unpublished (until now), Linux driver code,
 *    Copyright Larry Finger <Larry.Finger@lwfinger.net>
 *
 * A huge thanks goes to Sara V. Nari who forgives me when I'm
 * sitting in front of my laptop at evening, week-end, night...
 *
 * A special thanks goes to Antonio Cuni, who helped me with
 * some python userspace stuff I used to debug RTL8187SE code, and who
 * bought a laptop with an unsupported Wi-Fi card some years ago...
 *
 * Thanks to Larry Finger for writing some code for rtl8187se and for
 * his suggestions.
 *
 * Thanks to Dan Carpenter for reviewing my initial patch and for his
 * suggestions.
 *
 * Thanks to Bernhard Schiffner for his help in testing and for his
 * suggestions.
 *
 ************************************************************************
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
#include <linux/eeprom_93cx6.h>
#include <linux/module.h>
#include <net/mac80211.h>

#include "rtl8180.h"
#include "rtl8225.h"
#include "sa2400.h"
#include "max2820.h"
#include "grf5101.h"
#include "rtl8225se.h"

MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
MODULE_AUTHOR("Andrea Merello <andrea.merello@gmail.com>");
MODULE_DESCRIPTION("RTL8180 / RTL8185 / RTL8187SE PCI wireless driver");
MODULE_LICENSE("GPL");

static const struct pci_device_id rtl8180_table[] = {

	/* rtl8187se */
	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8199) },

	/* rtl8185 */
	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8185) },
	{ PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x700f) },
	{ PCI_DEVICE(PCI_VENDOR_ID_BELKIN, 0x701f) },

	/* rtl8180 */
	{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8180) },
	{ PCI_DEVICE(0x1799, 0x6001) },
	{ PCI_DEVICE(0x1799, 0x6020) },
	{ PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x3300) },
	{ PCI_DEVICE(0x1186, 0x3301) },
	{ PCI_DEVICE(0x1432, 0x7106) },
	{ }
};

MODULE_DEVICE_TABLE(pci, rtl8180_table);

static const struct ieee80211_rate rtl818x_rates[] = {
	{ .bitrate = 10, .hw_value = 0, },
	{ .bitrate = 20, .hw_value = 1, },
	{ .bitrate = 55, .hw_value = 2, },
	{ .bitrate = 110, .hw_value = 3, },
	{ .bitrate = 60, .hw_value = 4, },
	{ .bitrate = 90, .hw_value = 5, },
	{ .bitrate = 120, .hw_value = 6, },
	{ .bitrate = 180, .hw_value = 7, },
	{ .bitrate = 240, .hw_value = 8, },
	{ .bitrate = 360, .hw_value = 9, },
	{ .bitrate = 480, .hw_value = 10, },
	{ .bitrate = 540, .hw_value = 11, },
};

static const struct ieee80211_channel rtl818x_channels[] = {
	{ .center_freq = 2412 },
	{ .center_freq = 2417 },
	{ .center_freq = 2422 },
	{ .center_freq = 2427 },
	{ .center_freq = 2432 },
	{ .center_freq = 2437 },
	{ .center_freq = 2442 },
	{ .center_freq = 2447 },
	{ .center_freq = 2452 },
	{ .center_freq = 2457 },
	{ .center_freq = 2462 },
	{ .center_freq = 2467 },
	{ .center_freq = 2472 },
	{ .center_freq = 2484 },
};

/* Queues for rtl8187se card
 *
 * name | reg  |  queue
 *  BC  |  7   |   6
 *  MG  |  1   |   0
 *  HI  |  6   |   1
 *  VO  |  5   |   2
 *  VI  |  4   |   3
 *  BE  |  3   |   4
 *  BK  |  2   |   5
 *
 * The complete map for DMA kick reg using use all queue is:
 * static const int rtl8187se_queues_map[RTL8187SE_NR_TX_QUEUES] =
 *	{1, 6, 5, 4, 3, 2, 7};
 *
 * .. but.. Because for mac80211 4 queues are enough for QoS we use this
 *
 * name | reg  |  queue
 *  BC  |  7   |   4  <- currently not used yet
 *  MG  |  1   |   x  <- Not used
 *  HI  |  6   |   x  <- Not used
 *  VO  |  5   |   0  <- used
 *  VI  |  4   |   1  <- used
 *  BE  |  3   |   2  <- used
 *  BK  |  2   |   3  <- used
 *
 * Beacon queue could be used, but this is not finished yet.
 *
 * I thougth about using the other two queues but I decided not to do this:
 *
 * - I'm unsure whether the mac80211 will ever try to use more than 4 queues
 *   by itself.
 *
 * - I could route MGMT frames (currently sent over VO queue) to the MGMT
 *   queue but since mac80211 will do not know about it, I will probably gain
 *   some HW priority whenever the VO queue is not empty, but this gain is
 *   limited by the fact that I had to stop the mac80211 queue whenever one of
 *   the VO or MGMT queues is full, stopping also submitting of MGMT frame
 *   to the driver.
 *
 * - I don't know how to set in the HW the contention window params for MGMT
 *   and HI-prio queues.
 */

static const int rtl8187se_queues_map[RTL8187SE_NR_TX_QUEUES] = {5, 4, 3, 2, 7};

/* Queues for rtl8180/rtl8185 cards
 *
 * name | reg  |  prio
 *  BC  |  7   |   3
 *  HI  |  6   |   0
 *  NO  |  5   |   1
 *  LO  |  4   |   2
 *
 * The complete map for DMA kick reg using all queue is:
 * static const int rtl8180_queues_map[RTL8180_NR_TX_QUEUES] = {6, 5, 4, 7};
 *
 * .. but .. Because the mac80211 needs at least 4 queues for QoS or
 * otherwise QoS can't be done, we use just one.
 * Beacon queue could be used, but this is not finished yet.
 * Actual map is:
 *
 * name | reg  |  prio
 *  BC  |  7   |   1  <- currently not used yet.
 *  HI  |  6   |   x  <- not used
 *  NO  |  5   |   x  <- not used
 *  LO  |  4   |   0  <- used
 */

static const int rtl8180_queues_map[RTL8180_NR_TX_QUEUES] = {4, 7};

void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
{
	struct rtl8180_priv *priv = dev->priv;
	int i = 10;
	u32 buf;

	buf = (data << 8) | addr;

	rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf | 0x80);
	while (i--) {
		rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->PHY[0], buf);
		if (rtl818x_ioread8(priv, &priv->map->PHY[2]) == (data & 0xFF))
			return;
	}
}

static void rtl8180_handle_rx(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl818x_rx_cmd_desc *cmd_desc;
	unsigned int count = 32;
	u8 agc, sq, signal = 1;
	dma_addr_t mapping;

	while (count--) {
		void *entry = priv->rx_ring + priv->rx_idx * priv->rx_ring_sz;
		struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
		u32 flags, flags2;
		u64 tsft;

		if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
			struct rtl8187se_rx_desc *desc = entry;

			flags = le32_to_cpu(desc->flags);
			/* if ownership flag is set, then we can trust the
			 * HW has written other fields. We must not trust
			 * other descriptor data read before we checked (read)
			 * the ownership flag
			 */
			rmb();
			flags2 = le32_to_cpu(desc->flags2);
			tsft = le64_to_cpu(desc->tsft);
		} else {
			struct rtl8180_rx_desc *desc = entry;

			flags = le32_to_cpu(desc->flags);
			/* same as above */
			rmb();
			flags2 = le32_to_cpu(desc->flags2);
			tsft = le64_to_cpu(desc->tsft);
		}

		if (flags & RTL818X_RX_DESC_FLAG_OWN)
			return;

		if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
				      RTL818X_RX_DESC_FLAG_FOF |
				      RTL818X_RX_DESC_FLAG_RX_ERR)))
			goto done;
		else {
			struct ieee80211_rx_status rx_status = {0};
			struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_SIZE);

			if (unlikely(!new_skb))
				goto done;

			mapping = pci_map_single(priv->pdev,
					       skb_tail_pointer(new_skb),
					       MAX_RX_SIZE, PCI_DMA_FROMDEVICE);

			if (pci_dma_mapping_error(priv->pdev, mapping)) {
				kfree_skb(new_skb);
				dev_err(&priv->pdev->dev, "RX DMA map error\n");

				goto done;
			}

			pci_unmap_single(priv->pdev,
					 *((dma_addr_t *)skb->cb),
					 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
			skb_put(skb, flags & 0xFFF);

			rx_status.antenna = (flags2 >> 15) & 1;
			rx_status.rate_idx = (flags >> 20) & 0xF;
			agc = (flags2 >> 17) & 0x7F;

			switch (priv->chip_family) {
			case RTL818X_CHIP_FAMILY_RTL8185:
				if (rx_status.rate_idx > 3)
					signal = -clamp_t(u8, agc, 25, 90) - 9;
				else
					signal = -clamp_t(u8, agc, 30, 95);
				break;
			case RTL818X_CHIP_FAMILY_RTL8180:
				sq = flags2 & 0xff;
				signal = priv->rf->calc_rssi(agc, sq);
				break;
			case RTL818X_CHIP_FAMILY_RTL8187SE:
				/* TODO: rtl8187se rssi */
				signal = 10;
				break;
			}
			rx_status.signal = signal;
			rx_status.freq = dev->conf.chandef.chan->center_freq;
			rx_status.band = dev->conf.chandef.chan->band;
			rx_status.mactime = tsft;
			rx_status.flag |= RX_FLAG_MACTIME_START;
			if (flags & RTL818X_RX_DESC_FLAG_SPLCP)
				rx_status.flag |= RX_FLAG_SHORTPRE;
			if (flags & RTL818X_RX_DESC_FLAG_CRC32_ERR)
				rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;

			memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
			ieee80211_rx_irqsafe(dev, skb);

			skb = new_skb;
			priv->rx_buf[priv->rx_idx] = skb;
			*((dma_addr_t *) skb->cb) = mapping;
		}

	done:
		cmd_desc = entry;
		cmd_desc->rx_buf = cpu_to_le32(*((dma_addr_t *)skb->cb));
		cmd_desc->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
					   MAX_RX_SIZE);
		if (priv->rx_idx == 31)
			cmd_desc->flags |=
				cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
		priv->rx_idx = (priv->rx_idx + 1) % 32;
	}
}

static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];

	while (skb_queue_len(&ring->queue)) {
		struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
		struct sk_buff *skb;
		struct ieee80211_tx_info *info;
		u32 flags = le32_to_cpu(entry->flags);

		if (flags & RTL818X_TX_DESC_FLAG_OWN)
			return;

		ring->idx = (ring->idx + 1) % ring->entries;
		skb = __skb_dequeue(&ring->queue);
		pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
				 skb->len, PCI_DMA_TODEVICE);

		info = IEEE80211_SKB_CB(skb);
		ieee80211_tx_info_clear_status(info);

		if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
		    (flags & RTL818X_TX_DESC_FLAG_TX_OK))
			info->flags |= IEEE80211_TX_STAT_ACK;

		info->status.rates[0].count = (flags & 0xFF) + 1;

		ieee80211_tx_status_irqsafe(dev, skb);
		if (ring->entries - skb_queue_len(&ring->queue) == 2)
			ieee80211_wake_queue(dev, prio);
	}
}

static irqreturn_t rtl8187se_interrupt(int irq, void *dev_id)
{
	struct ieee80211_hw *dev = dev_id;
	struct rtl8180_priv *priv = dev->priv;
	u32 reg;
	unsigned long flags;
	static int desc_err;

	spin_lock_irqsave(&priv->lock, flags);
	/* Note: 32-bit interrupt status */
	reg = rtl818x_ioread32(priv, &priv->map->INT_STATUS_SE);
	if (unlikely(reg == 0xFFFFFFFF)) {
		spin_unlock_irqrestore(&priv->lock, flags);
		return IRQ_HANDLED;
	}

	rtl818x_iowrite32(priv, &priv->map->INT_STATUS_SE, reg);

	if (reg & IMR_TIMEOUT1)
		rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);

	if (reg & (IMR_TBDOK | IMR_TBDER))
		rtl8180_handle_tx(dev, 4);

	if (reg & (IMR_TVODOK | IMR_TVODER))
		rtl8180_handle_tx(dev, 0);

	if (reg & (IMR_TVIDOK | IMR_TVIDER))
		rtl8180_handle_tx(dev, 1);

	if (reg & (IMR_TBEDOK | IMR_TBEDER))
		rtl8180_handle_tx(dev, 2);

	if (reg & (IMR_TBKDOK | IMR_TBKDER))
		rtl8180_handle_tx(dev, 3);

	if (reg & (IMR_ROK | IMR_RER | RTL818X_INT_SE_RX_DU | IMR_RQOSOK))
		rtl8180_handle_rx(dev);
	/* The interface sometimes generates several RX DMA descriptor errors
	 * at startup. Do not report these.
	 */
	if ((reg & RTL818X_INT_SE_RX_DU) && desc_err++ > 2)
		if (net_ratelimit())
			wiphy_err(dev->wiphy, "No RX DMA Descriptor avail\n");

	spin_unlock_irqrestore(&priv->lock, flags);
	return IRQ_HANDLED;
}

static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
{
	struct ieee80211_hw *dev = dev_id;
	struct rtl8180_priv *priv = dev->priv;
	u16 reg;

	spin_lock(&priv->lock);
	reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
	if (unlikely(reg == 0xFFFF)) {
		spin_unlock(&priv->lock);
		return IRQ_HANDLED;
	}

	rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);

	if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
		rtl8180_handle_tx(dev, 1);

	if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
		rtl8180_handle_tx(dev, 0);

	if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
		rtl8180_handle_rx(dev);

	spin_unlock(&priv->lock);

	return IRQ_HANDLED;
}

static void rtl8180_tx(struct ieee80211_hw *dev,
		       struct ieee80211_tx_control *control,
		       struct sk_buff *skb)
{
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_tx_ring *ring;
	struct rtl8180_tx_desc *entry;
	unsigned long flags;
	unsigned int idx, prio, hw_prio;
	dma_addr_t mapping;
	u32 tx_flags;
	u8 rc_flags;
	u16 plcp_len = 0;
	__le16 rts_duration = 0;
	/* do arithmetic and then convert to le16 */
	u16 frame_duration = 0;

	prio = skb_get_queue_mapping(skb);
	ring = &priv->tx_ring[prio];

	mapping = pci_map_single(priv->pdev, skb->data,
				 skb->len, PCI_DMA_TODEVICE);

	if (pci_dma_mapping_error(priv->pdev, mapping)) {
		kfree_skb(skb);
		dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
		return;
	}

	tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
		   RTL818X_TX_DESC_FLAG_LS |
		   (ieee80211_get_tx_rate(dev, info)->hw_value << 24) |
		   skb->len;

	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
		tx_flags |= RTL818X_TX_DESC_FLAG_DMA |
			    RTL818X_TX_DESC_FLAG_NO_ENC;

	rc_flags = info->control.rates[0].flags;

	/* HW will perform RTS-CTS when only RTS flags is set.
	 * HW will perform CTS-to-self when both RTS and CTS flags are set.
	 * RTS rate and RTS duration will be used also for CTS-to-self.
	 */
	if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
		tx_flags |= RTL818X_TX_DESC_FLAG_RTS;
		tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
		rts_duration = ieee80211_rts_duration(dev, priv->vif,
						skb->len, info);
	} else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
		tx_flags |= RTL818X_TX_DESC_FLAG_RTS | RTL818X_TX_DESC_FLAG_CTS;
		tx_flags |= ieee80211_get_rts_cts_rate(dev, info)->hw_value << 19;
		rts_duration = ieee80211_ctstoself_duration(dev, priv->vif,
						skb->len, info);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
		unsigned int remainder;

		plcp_len = DIV_ROUND_UP(16 * (skb->len + 4),
				(ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
		remainder = (16 * (skb->len + 4)) %
			    ((ieee80211_get_tx_rate(dev, info)->bitrate * 2) / 10);
		if (remainder <= 6)
			plcp_len |= 1 << 15;
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		__le16 duration;
		/* SIFS time (required by HW) is already included by
		 * ieee80211_generic_frame_duration
		 */
		duration = ieee80211_generic_frame_duration(dev, priv->vif,
					IEEE80211_BAND_2GHZ, skb->len,
					ieee80211_get_tx_rate(dev, info));

		frame_duration =  priv->ack_time + le16_to_cpu(duration);
	}

	spin_lock_irqsave(&priv->lock, flags);

	if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
		if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
			priv->seqno += 0x10;
		hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
		hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
	}

	idx = (ring->idx + skb_queue_len(&ring->queue)) % ring->entries;
	entry = &ring->desc[idx];

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		entry->frame_duration = cpu_to_le16(frame_duration);
		entry->frame_len_se = cpu_to_le16(skb->len);

		/* tpc polarity */
		entry->flags3 = cpu_to_le16(1<<4);
	} else
		entry->frame_len = cpu_to_le32(skb->len);

	entry->rts_duration = rts_duration;
	entry->plcp_len = cpu_to_le16(plcp_len);
	entry->tx_buf = cpu_to_le32(mapping);

	entry->retry_limit = info->control.rates[0].count - 1;

	/* We must be sure that tx_flags is written last because the HW
	 * looks at it to check if the rest of data is valid or not
	 */
	wmb();
	entry->flags = cpu_to_le32(tx_flags);
	/* We must be sure this has been written before followings HW
	 * register write, because this write will made the HW attempts
	 * to DMA the just-written data
	 */
	wmb();

	__skb_queue_tail(&ring->queue, skb);
	if (ring->entries - skb_queue_len(&ring->queue) < 2)
		ieee80211_stop_queue(dev, prio);

	spin_unlock_irqrestore(&priv->lock, flags);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		/* just poll: rings are stopped with TPPollStop reg */
		hw_prio = rtl8187se_queues_map[prio];
		rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
			 (1 << hw_prio));
	} else {
		hw_prio = rtl8180_queues_map[prio];
		rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
			 (1 << hw_prio) | /* ring to poll  */
			 (1<<1) | (1<<2));/* stopped rings */
	}
}

static void rtl8180_set_anaparam3(struct rtl8180_priv *priv, u16 anaparam3)
{
	u8 reg;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			 RTL818X_EEPROM_CMD_CONFIG);

	reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);

	rtl818x_iowrite16(priv, &priv->map->ANAPARAM3, anaparam3);

	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			 RTL818X_EEPROM_CMD_NORMAL);
}

void rtl8180_set_anaparam2(struct rtl8180_priv *priv, u32 anaparam2)
{
	u8 reg;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			 RTL818X_EEPROM_CMD_CONFIG);

	reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);

	rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);

	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			 RTL818X_EEPROM_CMD_NORMAL);
}

void rtl8180_set_anaparam(struct rtl8180_priv *priv, u32 anaparam)
{
	u8 reg;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg | RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
	rtl818x_iowrite8(priv, &priv->map->CONFIG3,
		 reg & ~RTL818X_CONFIG3_ANAPARAM_WRITE);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
}

static void rtl8187se_mac_config(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	u8 reg;

	rtl818x_iowrite32(priv, REG_ADDR4(0x1F0), 0);
	rtl818x_ioread32(priv, REG_ADDR4(0x1F0));
	rtl818x_iowrite32(priv, REG_ADDR4(0x1F4), 0);
	rtl818x_ioread32(priv, REG_ADDR4(0x1F4));
	rtl818x_iowrite8(priv, REG_ADDR1(0x1F8), 0);
	rtl818x_ioread8(priv, REG_ADDR1(0x1F8));
	/* Enable DA10 TX power saving */
	reg = rtl818x_ioread8(priv, &priv->map->PHY_PR);
	rtl818x_iowrite8(priv, &priv->map->PHY_PR, reg | 0x04);
	/* Power */
	rtl818x_iowrite16(priv, PI_DATA_REG, 0x1000);
	rtl818x_iowrite16(priv, SI_DATA_REG, 0x1000);
	/* AFE - default to power ON */
	rtl818x_iowrite16(priv, REG_ADDR2(0x370), 0x0560);
	rtl818x_iowrite16(priv, REG_ADDR2(0x372), 0x0560);
	rtl818x_iowrite16(priv, REG_ADDR2(0x374), 0x0DA4);
	rtl818x_iowrite16(priv, REG_ADDR2(0x376), 0x0DA4);
	rtl818x_iowrite16(priv, REG_ADDR2(0x378), 0x0560);
	rtl818x_iowrite16(priv, REG_ADDR2(0x37A), 0x0560);
	rtl818x_iowrite16(priv, REG_ADDR2(0x37C), 0x00EC);
	rtl818x_iowrite16(priv, REG_ADDR2(0x37E), 0x00EC);
	rtl818x_iowrite8(priv, REG_ADDR1(0x24E), 0x01);
	/* unknown, needed for suspend to RAM resume */
	rtl818x_iowrite8(priv, REG_ADDR1(0x0A), 0x72);
}

static void rtl8187se_set_antenna_config(struct ieee80211_hw *dev, u8 def_ant,
					 bool diversity)
{
	struct rtl8180_priv *priv = dev->priv;

	rtl8225_write_phy_cck(dev, 0x0C, 0x09);
	if (diversity) {
		if (def_ant == 1) {
			rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x00);
			rtl8225_write_phy_cck(dev, 0x11, 0xBB);
			rtl8225_write_phy_cck(dev, 0x01, 0xC7);
			rtl8225_write_phy_ofdm(dev, 0x0D, 0x54);
			rtl8225_write_phy_ofdm(dev, 0x18, 0xB2);
		} else { /* main antenna */
			rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);
			rtl8225_write_phy_cck(dev, 0x11, 0x9B);
			rtl8225_write_phy_cck(dev, 0x01, 0xC7);
			rtl8225_write_phy_ofdm(dev, 0x0D, 0x5C);
			rtl8225_write_phy_ofdm(dev, 0x18, 0xB2);
		}
	} else { /* disable antenna diversity */
		if (def_ant == 1) {
			rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x00);
			rtl8225_write_phy_cck(dev, 0x11, 0xBB);
			rtl8225_write_phy_cck(dev, 0x01, 0x47);
			rtl8225_write_phy_ofdm(dev, 0x0D, 0x54);
			rtl8225_write_phy_ofdm(dev, 0x18, 0x32);
		} else { /* main antenna */
			rtl818x_iowrite8(priv, &priv->map->TX_ANTENNA, 0x03);
			rtl8225_write_phy_cck(dev, 0x11, 0x9B);
			rtl8225_write_phy_cck(dev, 0x01, 0x47);
			rtl8225_write_phy_ofdm(dev, 0x0D, 0x5C);
			rtl8225_write_phy_ofdm(dev, 0x18, 0x32);
		}
	}
	/* priv->curr_ant = def_ant; */
}

static void rtl8180_int_enable(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		rtl818x_iowrite32(priv, &priv->map->IMR,
			  IMR_TBDER | IMR_TBDOK |
			  IMR_TVODER | IMR_TVODOK |
			  IMR_TVIDER | IMR_TVIDOK |
			  IMR_TBEDER | IMR_TBEDOK |
			  IMR_TBKDER | IMR_TBKDOK |
			  IMR_RDU | IMR_RER |
			  IMR_ROK | IMR_RQOSOK);
	} else {
		rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
	}
}

static void rtl8180_int_disable(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		rtl818x_iowrite32(priv, &priv->map->IMR, 0);
	} else {
		rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
	}
}

static void rtl8180_conf_basic_rates(struct ieee80211_hw *dev,
			    u32 rates_mask)
{
	struct rtl8180_priv *priv = dev->priv;

	u8 max, min;
	u16 reg;

	max = fls(rates_mask) - 1;
	min = ffs(rates_mask) - 1;

	switch (priv->chip_family) {

	case RTL818X_CHIP_FAMILY_RTL8180:
		/* in 8180 this is NOT a BITMAP */
		reg = rtl818x_ioread16(priv, &priv->map->BRSR);
		reg &= ~3;
		reg |= max;
		rtl818x_iowrite16(priv, &priv->map->BRSR, reg);
		break;

	case RTL818X_CHIP_FAMILY_RTL8185:
		/* in 8185 this is a BITMAP */
		rtl818x_iowrite16(priv, &priv->map->BRSR, rates_mask);
		rtl818x_iowrite8(priv, &priv->map->RESP_RATE, (max << 4) | min);
		break;

	case RTL818X_CHIP_FAMILY_RTL8187SE:
		/* in 8187se this is a BITMAP */
		rtl818x_iowrite16(priv, &priv->map->BRSR_8187SE, rates_mask);
		break;
	}
}

static void rtl8180_config_cardbus(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	u16 reg16;
	u8 reg8;

	reg8 = rtl818x_ioread8(priv, &priv->map->CONFIG3);
	reg8 |= 1 << 1;
	rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg8);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		rtl818x_iowrite16(priv, FEMR_SE, 0xffff);
	} else {
		reg16 = rtl818x_ioread16(priv, &priv->map->FEMR);
			reg16 |= (1 << 15) | (1 << 14) | (1 << 4);
		rtl818x_iowrite16(priv, &priv->map->FEMR, reg16);
	}

}

static int rtl8180_init_hw(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	u16 reg;
	u32 reg32;

	rtl818x_iowrite8(priv, &priv->map->CMD, 0);
	rtl818x_ioread8(priv, &priv->map->CMD);
	msleep(10);

	/* reset */
	rtl8180_int_disable(dev);
	rtl818x_ioread8(priv, &priv->map->CMD);

	reg = rtl818x_ioread8(priv, &priv->map->CMD);
	reg &= (1 << 1);
	reg |= RTL818X_CMD_RESET;
	rtl818x_iowrite8(priv, &priv->map->CMD, RTL818X_CMD_RESET);
	rtl818x_ioread8(priv, &priv->map->CMD);
	msleep(200);

	/* check success of reset */
	if (rtl818x_ioread8(priv, &priv->map->CMD) & RTL818X_CMD_RESET) {
		wiphy_err(dev->wiphy, "reset timeout!\n");
		return -ETIMEDOUT;
	}

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_LOAD);
	rtl818x_ioread8(priv, &priv->map->CMD);
	msleep(200);

	if (rtl818x_ioread8(priv, &priv->map->CONFIG3) & (1 << 3)) {
		rtl8180_config_cardbus(dev);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		rtl818x_iowrite8(priv, &priv->map->MSR, RTL818X_MSR_ENEDCA);
	else
		rtl818x_iowrite8(priv, &priv->map->MSR, 0);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
		rtl8180_set_anaparam(priv, priv->anaparam);

	rtl818x_iowrite32(priv, &priv->map->RDSAR, priv->rx_ring_dma);
	/* mac80211 queue have higher prio for lower index. The last queue
	 * (that mac80211 is not aware of) is reserved for beacons (and have
	 * the highest priority on the NIC)
	 */
	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8187SE) {
		rtl818x_iowrite32(priv, &priv->map->TBDA,
				  priv->tx_ring[1].dma);
		rtl818x_iowrite32(priv, &priv->map->TLPDA,
				  priv->tx_ring[0].dma);
	} else {
		rtl818x_iowrite32(priv, &priv->map->TBDA,
				  priv->tx_ring[4].dma);
		rtl818x_iowrite32(priv, &priv->map->TVODA,
				  priv->tx_ring[0].dma);
		rtl818x_iowrite32(priv, &priv->map->TVIDA,
				  priv->tx_ring[1].dma);
		rtl818x_iowrite32(priv, &priv->map->TBEDA,
				  priv->tx_ring[2].dma);
		rtl818x_iowrite32(priv, &priv->map->TBKDA,
				  priv->tx_ring[3].dma);
	}

	/* TODO: necessary? specs indicate not */
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
	rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg & ~(1 << 3));
	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
		reg = rtl818x_ioread8(priv, &priv->map->CONFIG2);
		rtl818x_iowrite8(priv, &priv->map->CONFIG2, reg | (1 << 4));
	}
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	/* TODO: set CONFIG5 for calibrating AGC on rtl8180 + philips radio? */

	/* TODO: turn off hw wep on rtl8180 */

	rtl818x_iowrite32(priv, &priv->map->INT_TIMEOUT, 0);

	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
		rtl818x_iowrite8(priv, &priv->map->WPA_CONF, 0);
		rtl818x_iowrite8(priv, &priv->map->RATE_FALLBACK, 0);
	} else {
		rtl818x_iowrite8(priv, &priv->map->SECURITY, 0);

		rtl818x_iowrite8(priv, &priv->map->PHY_DELAY, 0x6);
		rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, 0x4C);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
		/* TODO: set ClkRun enable? necessary? */
		reg = rtl818x_ioread8(priv, &priv->map->GP_ENABLE);
		rtl818x_iowrite8(priv, &priv->map->GP_ENABLE, reg & ~(1 << 6));
		rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
		reg = rtl818x_ioread8(priv, &priv->map->CONFIG3);
		rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg | (1 << 2));
		rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);
		/* fix eccessive IFS after CTS-to-self */
		if (priv->map_pio) {
			u8 reg;

			reg = rtl818x_ioread8(priv, &priv->map->PGSELECT);
			rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg | 1);
			rtl818x_iowrite8(priv, REG_ADDR1(0xff), 0x35);
			rtl818x_iowrite8(priv, &priv->map->PGSELECT, reg);
		} else
			rtl818x_iowrite8(priv, REG_ADDR1(0x1ff), 0x35);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {

		/* the set auto rate fallback bitmask from 1M to 54 Mb/s */
		rtl818x_iowrite16(priv, ARFR, 0xFFF);
		rtl818x_ioread16(priv, ARFR);

		/* stop unused queus (no dma alloc) */
		rtl818x_iowrite8(priv, &priv->map->TPPOLL_STOP,
			       RTL818x_TPPOLL_STOP_MG | RTL818x_TPPOLL_STOP_HI);

		rtl818x_iowrite8(priv, &priv->map->ACM_CONTROL, 0x00);
		rtl818x_iowrite16(priv, &priv->map->TID_AC_MAP, 0xFA50);

		rtl818x_iowrite16(priv, &priv->map->INT_MIG, 0);

		/* some black magic here.. */
		rtl8187se_mac_config(dev);

		rtl818x_iowrite16(priv, RFSW_CTRL, 0x569A);
		rtl818x_ioread16(priv, RFSW_CTRL);

		rtl8180_set_anaparam(priv, RTL8225SE_ANAPARAM_ON);
		rtl8180_set_anaparam2(priv, RTL8225SE_ANAPARAM2_ON);
		rtl8180_set_anaparam3(priv, RTL8225SE_ANAPARAM3);


		rtl818x_iowrite8(priv, &priv->map->CONFIG5,
			    rtl818x_ioread8(priv, &priv->map->CONFIG5) & 0x7F);

		/*probably this switch led on */
		rtl818x_iowrite8(priv, &priv->map->PGSELECT,
			    rtl818x_ioread8(priv, &priv->map->PGSELECT) | 0x08);

		rtl818x_iowrite16(priv, &priv->map->RFPinsOutput, 0x0480);
		rtl818x_iowrite16(priv, &priv->map->RFPinsEnable, 0x1BFF);
		rtl818x_iowrite16(priv, &priv->map->RFPinsSelect, 0x2488);

		rtl818x_iowrite32(priv, &priv->map->RF_TIMING, 0x4003);

		/* the reference code mac hardcode table write
		 * this reg by doing byte-wide accesses.
		 * It does it just for lowest and highest byte..
		 */
		reg32 = rtl818x_ioread32(priv, &priv->map->RF_PARA);
		reg32 &= 0x00ffff00;
		reg32 |= 0xb8000054;
		rtl818x_iowrite32(priv, &priv->map->RF_PARA, reg32);
	} else
		/* stop unused queus (no dma alloc) */
		rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING,
			    (1<<1) | (1<<2));

	priv->rf->init(dev);

	/* default basic rates are 1,2 Mbps for rtl8180. 1,2,6,9,12,18,24 Mbps
	 * otherwise. bitmask 0x3 and 0x01f3 respectively.
	 * NOTE: currenty rtl8225 RF code changes basic rates, so we need to do
	 * this after rf init.
	 * TODO: try to find out whether RF code really needs to do this..
	 */
	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
		rtl8180_conf_basic_rates(dev, 0x3);
	else
		rtl8180_conf_basic_rates(dev, 0x1f3);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		rtl8187se_set_antenna_config(dev,
					     priv->antenna_diversity_default,
					     priv->antenna_diversity_en);
	return 0;
}

static int rtl8180_init_rx_ring(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl818x_rx_cmd_desc *entry;
	int i;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		priv->rx_ring_sz = sizeof(struct rtl8187se_rx_desc);
	else
		priv->rx_ring_sz = sizeof(struct rtl8180_rx_desc);

	priv->rx_ring = pci_zalloc_consistent(priv->pdev, priv->rx_ring_sz * 32,
					      &priv->rx_ring_dma);
	if (!priv->rx_ring || (unsigned long)priv->rx_ring & 0xFF) {
		wiphy_err(dev->wiphy, "Cannot allocate RX ring\n");
		return -ENOMEM;
	}

	priv->rx_idx = 0;

	for (i = 0; i < 32; i++) {
		struct sk_buff *skb = dev_alloc_skb(MAX_RX_SIZE);
		dma_addr_t *mapping;
		entry = priv->rx_ring + priv->rx_ring_sz*i;
		if (!skb) {
			wiphy_err(dev->wiphy, "Cannot allocate RX skb\n");
			return -ENOMEM;
		}
		priv->rx_buf[i] = skb;
		mapping = (dma_addr_t *)skb->cb;
		*mapping = pci_map_single(priv->pdev, skb_tail_pointer(skb),
					  MAX_RX_SIZE, PCI_DMA_FROMDEVICE);

		if (pci_dma_mapping_error(priv->pdev, *mapping)) {
			kfree_skb(skb);
			wiphy_err(dev->wiphy, "Cannot map DMA for RX skb\n");
			return -ENOMEM;
		}

		entry->rx_buf = cpu_to_le32(*mapping);
		entry->flags = cpu_to_le32(RTL818X_RX_DESC_FLAG_OWN |
					   MAX_RX_SIZE);
	}
	entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
	return 0;
}

static void rtl8180_free_rx_ring(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	int i;

	for (i = 0; i < 32; i++) {
		struct sk_buff *skb = priv->rx_buf[i];
		if (!skb)
			continue;

		pci_unmap_single(priv->pdev,
				 *((dma_addr_t *)skb->cb),
				 MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
		kfree_skb(skb);
	}

	pci_free_consistent(priv->pdev, priv->rx_ring_sz * 32,
			    priv->rx_ring, priv->rx_ring_dma);
	priv->rx_ring = NULL;
}

static int rtl8180_init_tx_ring(struct ieee80211_hw *dev,
				unsigned int prio, unsigned int entries)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_tx_desc *ring;
	dma_addr_t dma;
	int i;

	ring = pci_zalloc_consistent(priv->pdev, sizeof(*ring) * entries,
				     &dma);
	if (!ring || (unsigned long)ring & 0xFF) {
		wiphy_err(dev->wiphy, "Cannot allocate TX ring (prio = %d)\n",
			  prio);
		return -ENOMEM;
	}

	priv->tx_ring[prio].desc = ring;
	priv->tx_ring[prio].dma = dma;
	priv->tx_ring[prio].idx = 0;
	priv->tx_ring[prio].entries = entries;
	skb_queue_head_init(&priv->tx_ring[prio].queue);

	for (i = 0; i < entries; i++)
		ring[i].next_tx_desc =
			cpu_to_le32((u32)dma + ((i + 1) % entries) * sizeof(*ring));

	return 0;
}

static void rtl8180_free_tx_ring(struct ieee80211_hw *dev, unsigned int prio)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];

	while (skb_queue_len(&ring->queue)) {
		struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
		struct sk_buff *skb = __skb_dequeue(&ring->queue);

		pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
				 skb->len, PCI_DMA_TODEVICE);
		kfree_skb(skb);
		ring->idx = (ring->idx + 1) % ring->entries;
	}

	pci_free_consistent(priv->pdev, sizeof(*ring->desc)*ring->entries,
			    ring->desc, ring->dma);
	ring->desc = NULL;
}

static int rtl8180_start(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	int ret, i;
	u32 reg;

	ret = rtl8180_init_rx_ring(dev);
	if (ret)
		return ret;

	for (i = 0; i < (dev->queues + 1); i++)
		if ((ret = rtl8180_init_tx_ring(dev, i, 16)))
			goto err_free_rings;

	ret = rtl8180_init_hw(dev);
	if (ret)
		goto err_free_rings;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		ret = request_irq(priv->pdev->irq, rtl8187se_interrupt,
			  IRQF_SHARED, KBUILD_MODNAME, dev);
	} else {
		ret = request_irq(priv->pdev->irq, rtl8180_interrupt,
			  IRQF_SHARED, KBUILD_MODNAME, dev);
	}

	if (ret) {
		wiphy_err(dev->wiphy, "failed to register IRQ handler\n");
		goto err_free_rings;
	}

	rtl8180_int_enable(dev);

	/* in rtl8187se at MAR regs offset there is the management
	 * TX descriptor DMA addres..
	 */
	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8187SE) {
		rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
		rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
	}

	reg = RTL818X_RX_CONF_ONLYERLPKT |
	      RTL818X_RX_CONF_RX_AUTORESETPHY |
	      RTL818X_RX_CONF_MGMT |
	      RTL818X_RX_CONF_DATA |
	      (7 << 8 /* MAX RX DMA */) |
	      RTL818X_RX_CONF_BROADCAST |
	      RTL818X_RX_CONF_NICMAC;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185)
		reg |= RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2;
	else if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
		reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE1)
			? RTL818X_RX_CONF_CSDM1 : 0;
		reg |= (priv->rfparam & RF_PARAM_CARRIERSENSE2)
			? RTL818X_RX_CONF_CSDM2 : 0;
	} else {
		reg &= ~(RTL818X_RX_CONF_CSDM1 | RTL818X_RX_CONF_CSDM2);
	}

	priv->rx_conf = reg;
	rtl818x_iowrite32(priv, &priv->map->RX_CONF, reg);

	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
		reg = rtl818x_ioread8(priv, &priv->map->CW_CONF);

		/* CW is not on per-packet basis.
		 * in rtl8185 the CW_VALUE reg is used.
		 * in rtl8187se the AC param regs are used.
		 */
		reg &= ~RTL818X_CW_CONF_PERPACKET_CW;
		/* retry limit IS on per-packet basis.
		 * the short and long retry limit in TX_CONF
		 * reg are ignored
		 */
		reg |= RTL818X_CW_CONF_PERPACKET_RETRY;
		rtl818x_iowrite8(priv, &priv->map->CW_CONF, reg);

		reg = rtl818x_ioread8(priv, &priv->map->TX_AGC_CTL);
		/* TX antenna and TX gain are not on per-packet basis.
		 * TX Antenna is selected by ANTSEL reg (RX in BB regs).
		 * TX gain is selected with CCK_TX_AGC and OFDM_TX_AGC regs
		 */
		reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_GAIN;
		reg &= ~RTL818X_TX_AGC_CTL_PERPACKET_ANTSEL;
		reg |=  RTL818X_TX_AGC_CTL_FEEDBACK_ANT;
		rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);

		/* disable early TX */
		rtl818x_iowrite8(priv, (u8 __iomem *)priv->map + 0xec, 0x3f);
	}

	reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
	reg |= (6 << 21 /* MAX TX DMA */) |
	       RTL818X_TX_CONF_NO_ICV;

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		reg |= 1<<30;  /*  "duration procedure mode" */

	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180)
		reg &= ~RTL818X_TX_CONF_PROBE_DTS;
	else
		reg &= ~RTL818X_TX_CONF_HW_SEQNUM;

	reg &= ~RTL818X_TX_CONF_DISCW;

	/* different meaning, same value on both rtl8185 and rtl8180 */
	reg &= ~RTL818X_TX_CONF_SAT_HWPLCP;

	rtl818x_iowrite32(priv, &priv->map->TX_CONF, reg);

	reg = rtl818x_ioread8(priv, &priv->map->CMD);
	reg |= RTL818X_CMD_RX_ENABLE;
	reg |= RTL818X_CMD_TX_ENABLE;
	rtl818x_iowrite8(priv, &priv->map->CMD, reg);

	return 0;

 err_free_rings:
	rtl8180_free_rx_ring(dev);
	for (i = 0; i < (dev->queues + 1); i++)
		if (priv->tx_ring[i].desc)
			rtl8180_free_tx_ring(dev, i);

	return ret;
}

static void rtl8180_stop(struct ieee80211_hw *dev)
{
	struct rtl8180_priv *priv = dev->priv;
	u8 reg;
	int i;

	rtl8180_int_disable(dev);

	reg = rtl818x_ioread8(priv, &priv->map->CMD);
	reg &= ~RTL818X_CMD_TX_ENABLE;
	reg &= ~RTL818X_CMD_RX_ENABLE;
	rtl818x_iowrite8(priv, &priv->map->CMD, reg);

	priv->rf->stop(dev);

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	reg = rtl818x_ioread8(priv, &priv->map->CONFIG4);
	rtl818x_iowrite8(priv, &priv->map->CONFIG4, reg | RTL818X_CONFIG4_VCOOFF);
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	free_irq(priv->pdev->irq, dev);

	rtl8180_free_rx_ring(dev);
	for (i = 0; i < (dev->queues + 1); i++)
		rtl8180_free_tx_ring(dev, i);
}

static u64 rtl8180_get_tsf(struct ieee80211_hw *dev,
			   struct ieee80211_vif *vif)
{
	struct rtl8180_priv *priv = dev->priv;

	return rtl818x_ioread32(priv, &priv->map->TSFT[0]) |
	       (u64)(rtl818x_ioread32(priv, &priv->map->TSFT[1])) << 32;
}

static void rtl8180_beacon_work(struct work_struct *work)
{
	struct rtl8180_vif *vif_priv =
		container_of(work, struct rtl8180_vif, beacon_work.work);
	struct ieee80211_vif *vif =
		container_of((void *)vif_priv, struct ieee80211_vif, drv_priv);
	struct ieee80211_hw *dev = vif_priv->dev;
	struct ieee80211_mgmt *mgmt;
	struct sk_buff *skb;

	/* don't overflow the tx ring */
	if (ieee80211_queue_stopped(dev, 0))
		goto resched;

	/* grab a fresh beacon */
	skb = ieee80211_beacon_get(dev, vif);
	if (!skb)
		goto resched;

	/*
	 * update beacon timestamp w/ TSF value
	 * TODO: make hardware update beacon timestamp
	 */
	mgmt = (struct ieee80211_mgmt *)skb->data;
	mgmt->u.beacon.timestamp = cpu_to_le64(rtl8180_get_tsf(dev, vif));

	/* TODO: use actual beacon queue */
	skb_set_queue_mapping(skb, 0);

	rtl8180_tx(dev, NULL, skb);

resched:
	/*
	 * schedule next beacon
	 * TODO: use hardware support for beacon timing
	 */
	schedule_delayed_work(&vif_priv->beacon_work,
			usecs_to_jiffies(1024 * vif->bss_conf.beacon_int));
}

static int rtl8180_add_interface(struct ieee80211_hw *dev,
				 struct ieee80211_vif *vif)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_vif *vif_priv;

	/*
	 * We only support one active interface at a time.
	 */
	if (priv->vif)
		return -EBUSY;

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
		break;
	default:
		return -EOPNOTSUPP;
	}

	priv->vif = vif;

	/* Initialize driver private area */
	vif_priv = (struct rtl8180_vif *)&vif->drv_priv;
	vif_priv->dev = dev;
	INIT_DELAYED_WORK(&vif_priv->beacon_work, rtl8180_beacon_work);
	vif_priv->enable_beacon = false;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_CONFIG);
	rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->MAC[0],
			  le32_to_cpu(*(__le32 *)vif->addr));
	rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->MAC[4],
			  le16_to_cpu(*(__le16 *)(vif->addr + 4)));
	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, RTL818X_EEPROM_CMD_NORMAL);

	return 0;
}

static void rtl8180_remove_interface(struct ieee80211_hw *dev,
				     struct ieee80211_vif *vif)
{
	struct rtl8180_priv *priv = dev->priv;
	priv->vif = NULL;
}

static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
{
	struct rtl8180_priv *priv = dev->priv;
	struct ieee80211_conf *conf = &dev->conf;

	priv->rf->set_chan(dev, conf);

	return 0;
}

static void rtl8187se_conf_ac_parm(struct ieee80211_hw *dev, u8 queue)
{
	const struct ieee80211_tx_queue_params *params;
	struct rtl8180_priv *priv = dev->priv;

	/* hw value */
	u32 ac_param;

	u8 aifs;
	u8 txop;
	u8 cw_min, cw_max;

	params = &priv->queue_param[queue];

	cw_min = fls(params->cw_min);
	cw_max = fls(params->cw_max);

	aifs = 10 + params->aifs * priv->slot_time;

	/* TODO: check if txop HW is in us (mult by 32) */
	txop = params->txop;

	ac_param = txop << AC_PARAM_TXOP_LIMIT_SHIFT |
		cw_max << AC_PARAM_ECW_MAX_SHIFT |
		cw_min << AC_PARAM_ECW_MIN_SHIFT |
		aifs << AC_PARAM_AIFS_SHIFT;

	switch (queue) {
	case IEEE80211_AC_BK:
		rtl818x_iowrite32(priv, &priv->map->AC_BK_PARAM, ac_param);
		break;
	case IEEE80211_AC_BE:
		rtl818x_iowrite32(priv, &priv->map->AC_BE_PARAM, ac_param);
		break;
	case IEEE80211_AC_VI:
		rtl818x_iowrite32(priv, &priv->map->AC_VI_PARAM, ac_param);
		break;
	case IEEE80211_AC_VO:
		rtl818x_iowrite32(priv, &priv->map->AC_VO_PARAM, ac_param);
		break;
	}
}

static int rtl8180_conf_tx(struct ieee80211_hw *dev,
			    struct ieee80211_vif *vif, u16 queue,
			    const struct ieee80211_tx_queue_params *params)
{
	struct rtl8180_priv *priv = dev->priv;
	u8 cw_min, cw_max;

	/* nothing to do ? */
	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
		return 0;

	cw_min = fls(params->cw_min);
	cw_max = fls(params->cw_max);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		priv->queue_param[queue] = *params;
		rtl8187se_conf_ac_parm(dev, queue);
	} else
		rtl818x_iowrite8(priv, &priv->map->CW_VAL,
				 (cw_max << 4) | cw_min);
	return 0;
}

static void rtl8180_conf_erp(struct ieee80211_hw *dev,
			    struct ieee80211_bss_conf *info)
{
	struct rtl8180_priv *priv = dev->priv;
	u8 sifs, difs;
	int eifs;
	u8 hw_eifs;

	/* TODO: should we do something ? */
	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180)
		return;

	/* I _hope_ this means 10uS for the HW.
	 * In reference code it is 0x22 for
	 * both rtl8187L and rtl8187SE
	 */
	sifs = 0x22;

	if (info->use_short_slot)
		priv->slot_time = 9;
	else
		priv->slot_time = 20;

	/* 10 is SIFS time in uS */
	difs = 10 + 2 * priv->slot_time;
	eifs = 10 + difs + priv->ack_time;

	/* HW should use 4uS units for EIFS (I'm sure for rtl8185)*/
	hw_eifs = DIV_ROUND_UP(eifs, 4);


	rtl818x_iowrite8(priv, &priv->map->SLOT, priv->slot_time);
	rtl818x_iowrite8(priv, &priv->map->SIFS, sifs);
	rtl818x_iowrite8(priv, &priv->map->DIFS, difs);

	/* from reference code. set ack timeout reg = eifs reg */
	rtl818x_iowrite8(priv, &priv->map->CARRIER_SENSE_COUNTER, hw_eifs);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		rtl818x_iowrite8(priv, &priv->map->EIFS_8187SE, hw_eifs);
	else if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185) {
		/* rtl8187/rtl8185 HW bug. After EIFS is elapsed,
		 * the HW still wait for DIFS.
		 * HW uses 4uS units for EIFS.
		 */
		hw_eifs = DIV_ROUND_UP(eifs - difs, 4);

		rtl818x_iowrite8(priv, &priv->map->EIFS, hw_eifs);
	}
}

static void rtl8180_bss_info_changed(struct ieee80211_hw *dev,
				     struct ieee80211_vif *vif,
				     struct ieee80211_bss_conf *info,
				     u32 changed)
{
	struct rtl8180_priv *priv = dev->priv;
	struct rtl8180_vif *vif_priv;
	int i;
	u8 reg;

	vif_priv = (struct rtl8180_vif *)&vif->drv_priv;

	if (changed & BSS_CHANGED_BSSID) {
		rtl818x_iowrite16(priv, (__le16 __iomem *)&priv->map->BSSID[0],
				  le16_to_cpu(*(__le16 *)info->bssid));
		rtl818x_iowrite32(priv, (__le32 __iomem *)&priv->map->BSSID[2],
				  le32_to_cpu(*(__le32 *)(info->bssid + 2)));

		if (is_valid_ether_addr(info->bssid)) {
			if (vif->type == NL80211_IFTYPE_ADHOC)
				reg = RTL818X_MSR_ADHOC;
			else
				reg = RTL818X_MSR_INFRA;
		} else
			reg = RTL818X_MSR_NO_LINK;

		if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
			reg |= RTL818X_MSR_ENEDCA;

		rtl818x_iowrite8(priv, &priv->map->MSR, reg);
	}

	if (changed & BSS_CHANGED_BASIC_RATES)
		rtl8180_conf_basic_rates(dev, info->basic_rates);

	if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_ERP_PREAMBLE)) {

		/* when preamble changes, acktime duration changes, and erp must
		 * be recalculated. ACK time is calculated at lowest rate.
		 * Since mac80211 include SIFS time we remove it (-10)
		 */
		priv->ack_time =
			le16_to_cpu(ieee80211_generic_frame_duration(dev,
					priv->vif,
					IEEE80211_BAND_2GHZ, 10,
					&priv->rates[0])) - 10;

		rtl8180_conf_erp(dev, info);

		/* mac80211 supplies aifs_n to driver and calls
		 * conf_tx callback whether aifs_n changes, NOT
		 * when aifs changes.
		 * Aifs should be recalculated if slot changes.
		 */
		if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
			for (i = 0; i < 4; i++)
				rtl8187se_conf_ac_parm(dev, i);
		}
	}

	if (changed & BSS_CHANGED_BEACON_ENABLED)
		vif_priv->enable_beacon = info->enable_beacon;

	if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON)) {
		cancel_delayed_work_sync(&vif_priv->beacon_work);
		if (vif_priv->enable_beacon)
			schedule_work(&vif_priv->beacon_work.work);
	}
}

static u64 rtl8180_prepare_multicast(struct ieee80211_hw *dev,
				     struct netdev_hw_addr_list *mc_list)
{
	return netdev_hw_addr_list_count(mc_list);
}

static void rtl8180_configure_filter(struct ieee80211_hw *dev,
				     unsigned int changed_flags,
				     unsigned int *total_flags,
				     u64 multicast)
{
	struct rtl8180_priv *priv = dev->priv;

	if (changed_flags & FIF_FCSFAIL)
		priv->rx_conf ^= RTL818X_RX_CONF_FCS;
	if (changed_flags & FIF_CONTROL)
		priv->rx_conf ^= RTL818X_RX_CONF_CTRL;
	if (changed_flags & FIF_OTHER_BSS)
		priv->rx_conf ^= RTL818X_RX_CONF_MONITOR;
	if (*total_flags & FIF_ALLMULTI || multicast > 0)
		priv->rx_conf |= RTL818X_RX_CONF_MULTICAST;
	else
		priv->rx_conf &= ~RTL818X_RX_CONF_MULTICAST;

	*total_flags = 0;

	if (priv->rx_conf & RTL818X_RX_CONF_FCS)
		*total_flags |= FIF_FCSFAIL;
	if (priv->rx_conf & RTL818X_RX_CONF_CTRL)
		*total_flags |= FIF_CONTROL;
	if (priv->rx_conf & RTL818X_RX_CONF_MONITOR)
		*total_flags |= FIF_OTHER_BSS;
	if (priv->rx_conf & RTL818X_RX_CONF_MULTICAST)
		*total_flags |= FIF_ALLMULTI;

	rtl818x_iowrite32(priv, &priv->map->RX_CONF, priv->rx_conf);
}

static const struct ieee80211_ops rtl8180_ops = {
	.tx			= rtl8180_tx,
	.start			= rtl8180_start,
	.stop			= rtl8180_stop,
	.add_interface		= rtl8180_add_interface,
	.remove_interface	= rtl8180_remove_interface,
	.config			= rtl8180_config,
	.bss_info_changed	= rtl8180_bss_info_changed,
	.conf_tx		= rtl8180_conf_tx,
	.prepare_multicast	= rtl8180_prepare_multicast,
	.configure_filter	= rtl8180_configure_filter,
	.get_tsf		= rtl8180_get_tsf,
};

static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
{
	struct rtl8180_priv *priv = eeprom->data;
	u8 reg = rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);

	eeprom->reg_data_in = reg & RTL818X_EEPROM_CMD_WRITE;
	eeprom->reg_data_out = reg & RTL818X_EEPROM_CMD_READ;
	eeprom->reg_data_clock = reg & RTL818X_EEPROM_CMD_CK;
	eeprom->reg_chip_select = reg & RTL818X_EEPROM_CMD_CS;
}

static void rtl8180_eeprom_register_write(struct eeprom_93cx6 *eeprom)
{
	struct rtl8180_priv *priv = eeprom->data;
	u8 reg = 2 << 6;

	if (eeprom->reg_data_in)
		reg |= RTL818X_EEPROM_CMD_WRITE;
	if (eeprom->reg_data_out)
		reg |= RTL818X_EEPROM_CMD_READ;
	if (eeprom->reg_data_clock)
		reg |= RTL818X_EEPROM_CMD_CK;
	if (eeprom->reg_chip_select)
		reg |= RTL818X_EEPROM_CMD_CS;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD, reg);
	rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
	udelay(10);
}

static void rtl8180_eeprom_read(struct rtl8180_priv *priv)
{
	struct eeprom_93cx6 eeprom;
	int eeprom_cck_table_adr;
	u16 eeprom_val;
	int i;

	eeprom.data = priv;
	eeprom.register_read = rtl8180_eeprom_register_read;
	eeprom.register_write = rtl8180_eeprom_register_write;
	if (rtl818x_ioread32(priv, &priv->map->RX_CONF) & (1 << 6))
		eeprom.width = PCI_EEPROM_WIDTH_93C66;
	else
		eeprom.width = PCI_EEPROM_WIDTH_93C46;

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			RTL818X_EEPROM_CMD_PROGRAM);
	rtl818x_ioread8(priv, &priv->map->EEPROM_CMD);
	udelay(10);

	eeprom_93cx6_read(&eeprom, 0x06, &eeprom_val);
	eeprom_val &= 0xFF;
	priv->rf_type = eeprom_val;

	eeprom_93cx6_read(&eeprom, 0x17, &eeprom_val);
	priv->csthreshold = eeprom_val >> 8;

	eeprom_93cx6_multiread(&eeprom, 0x7, (__le16 *)priv->mac_addr, 3);

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		eeprom_cck_table_adr = 0x30;
	else
		eeprom_cck_table_adr = 0x10;

	/* CCK TX power */
	for (i = 0; i < 14; i += 2) {
		u16 txpwr;
		eeprom_93cx6_read(&eeprom, eeprom_cck_table_adr + (i >> 1),
				&txpwr);
		priv->channels[i].hw_value = txpwr & 0xFF;
		priv->channels[i + 1].hw_value = txpwr >> 8;
	}

	/* OFDM TX power */
	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
		for (i = 0; i < 14; i += 2) {
			u16 txpwr;
			eeprom_93cx6_read(&eeprom, 0x20 + (i >> 1), &txpwr);
			priv->channels[i].hw_value |= (txpwr & 0xFF) << 8;
			priv->channels[i + 1].hw_value |= txpwr & 0xFF00;
		}
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8180) {
		__le32 anaparam;
		eeprom_93cx6_multiread(&eeprom, 0xD, (__le16 *)&anaparam, 2);
		priv->anaparam = le32_to_cpu(anaparam);
		eeprom_93cx6_read(&eeprom, 0x19, &priv->rfparam);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE) {
		eeprom_93cx6_read(&eeprom, 0x3F, &eeprom_val);
		priv->antenna_diversity_en = !!(eeprom_val & 0x100);
		priv->antenna_diversity_default = (eeprom_val & 0xC00) == 0x400;

		eeprom_93cx6_read(&eeprom, 0x7C, &eeprom_val);
		priv->xtal_out = eeprom_val & 0xF;
		priv->xtal_in = (eeprom_val & 0xF0) >> 4;
		priv->xtal_cal = !!(eeprom_val & 0x1000);
		priv->thermal_meter_val = (eeprom_val & 0xF00) >> 8;
		priv->thermal_meter_en = !!(eeprom_val & 0x2000);
	}

	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
			RTL818X_EEPROM_CMD_NORMAL);
}

static int rtl8180_probe(struct pci_dev *pdev,
				   const struct pci_device_id *id)
{
	struct ieee80211_hw *dev;
	struct rtl8180_priv *priv;
	unsigned long mem_addr, mem_len;
	unsigned int io_addr, io_len;
	int err;
	const char *chip_name, *rf_name = NULL;
	u32 reg;

	err = pci_enable_device(pdev);
	if (err) {
		printk(KERN_ERR "%s (rtl8180): Cannot enable new PCI device\n",
		       pci_name(pdev));
		return err;
	}

	err = pci_request_regions(pdev, KBUILD_MODNAME);
	if (err) {
		printk(KERN_ERR "%s (rtl8180): Cannot obtain PCI resources\n",
		       pci_name(pdev));
		return err;
	}

	io_addr = pci_resource_start(pdev, 0);
	io_len = pci_resource_len(pdev, 0);
	mem_addr = pci_resource_start(pdev, 1);
	mem_len = pci_resource_len(pdev, 1);

	if (mem_len < sizeof(struct rtl818x_csr) ||
	    io_len < sizeof(struct rtl818x_csr)) {
		printk(KERN_ERR "%s (rtl8180): Too short PCI resources\n",
		       pci_name(pdev));
		err = -ENOMEM;
		goto err_free_reg;
	}

	if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) ||
	    (err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))) {
		printk(KERN_ERR "%s (rtl8180): No suitable DMA available\n",
		       pci_name(pdev));
		goto err_free_reg;
	}

	pci_set_master(pdev);

	dev = ieee80211_alloc_hw(sizeof(*priv), &rtl8180_ops);
	if (!dev) {
		printk(KERN_ERR "%s (rtl8180): ieee80211 alloc failed\n",
		       pci_name(pdev));
		err = -ENOMEM;
		goto err_free_reg;
	}

	priv = dev->priv;
	priv->pdev = pdev;

	dev->max_rates = 1;
	SET_IEEE80211_DEV(dev, &pdev->dev);
	pci_set_drvdata(pdev, dev);

	priv->map_pio = false;
	priv->map = pci_iomap(pdev, 1, mem_len);
	if (!priv->map) {
		priv->map = pci_iomap(pdev, 0, io_len);
		priv->map_pio = true;
	}

	if (!priv->map) {
		dev_err(&pdev->dev, "Cannot map device memory/PIO\n");
		err = -ENOMEM;
		goto err_free_dev;
	}

	BUILD_BUG_ON(sizeof(priv->channels) != sizeof(rtl818x_channels));
	BUILD_BUG_ON(sizeof(priv->rates) != sizeof(rtl818x_rates));

	memcpy(priv->channels, rtl818x_channels, sizeof(rtl818x_channels));
	memcpy(priv->rates, rtl818x_rates, sizeof(rtl818x_rates));

	priv->band.band = IEEE80211_BAND_2GHZ;
	priv->band.channels = priv->channels;
	priv->band.n_channels = ARRAY_SIZE(rtl818x_channels);
	priv->band.bitrates = priv->rates;
	priv->band.n_bitrates = 4;
	dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;

	dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
		IEEE80211_HW_RX_INCLUDES_FCS;
	dev->vif_data_size = sizeof(struct rtl8180_vif);
	dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
					BIT(NL80211_IFTYPE_ADHOC);
	dev->max_signal = 65;

	reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
	reg &= RTL818X_TX_CONF_HWVER_MASK;
	switch (reg) {
	case RTL818X_TX_CONF_R8180_ABCD:
		chip_name = "RTL8180";
		priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
		break;

	case RTL818X_TX_CONF_R8180_F:
		chip_name = "RTL8180vF";
		priv->chip_family = RTL818X_CHIP_FAMILY_RTL8180;
		break;

	case RTL818X_TX_CONF_R8185_ABC:
		chip_name = "RTL8185";
		priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
		break;

	case RTL818X_TX_CONF_R8185_D:
		chip_name = "RTL8185vD";
		priv->chip_family = RTL818X_CHIP_FAMILY_RTL8185;
		break;

	case RTL818X_TX_CONF_RTL8187SE:
		chip_name = "RTL8187SE";
		if (priv->map_pio) {
			dev_err(&pdev->dev,
				"MMIO failed. PIO not supported on RTL8187SE\n");
			err = -ENOMEM;
			goto err_iounmap;
		}
		priv->chip_family = RTL818X_CHIP_FAMILY_RTL8187SE;
		break;

	default:
		printk(KERN_ERR "%s (rtl8180): Unknown chip! (0x%x)\n",
		       pci_name(pdev), reg >> 25);
		err = -ENODEV;
		goto err_iounmap;
	}

	/* we declare to MAC80211 all the queues except for beacon queue
	 * that will be eventually handled by DRV.
	 * TX rings are arranged in such a way that lower is the IDX,
	 * higher is the priority, in order to achieve direct mapping
	 * with mac80211, however the beacon queue is an exception and it
	 * is mapped on the highst tx ring IDX.
	 */
	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
		dev->queues = RTL8187SE_NR_TX_QUEUES - 1;
	else
		dev->queues = RTL8180_NR_TX_QUEUES - 1;

	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8180) {
		priv->band.n_bitrates = ARRAY_SIZE(rtl818x_rates);
		pci_try_set_mwi(pdev);
	}

	if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8185)
		dev->flags |= IEEE80211_HW_SIGNAL_DBM;
	else
		dev->flags |= IEEE80211_HW_SIGNAL_UNSPEC;

	rtl8180_eeprom_read(priv);

	switch (priv->rf_type) {
	case 1:	rf_name = "Intersil";
		break;
	case 2:	rf_name = "RFMD";
		break;
	case 3:	priv->rf = &sa2400_rf_ops;
		break;
	case 4:	priv->rf = &max2820_rf_ops;
		break;
	case 5:	priv->rf = &grf5101_rf_ops;
		break;
	case 9:
		if (priv->chip_family == RTL818X_CHIP_FAMILY_RTL8187SE)
			priv->rf = rtl8187se_detect_rf(dev);
		else
			priv->rf = rtl8180_detect_rf(dev);
		break;
	case 10:
		rf_name = "RTL8255";
		break;
	default:
		printk(KERN_ERR "%s (rtl8180): Unknown RF! (0x%x)\n",
		       pci_name(pdev), priv->rf_type);
		err = -ENODEV;
		goto err_iounmap;
	}

	if (!priv->rf) {
		printk(KERN_ERR "%s (rtl8180): %s RF frontend not supported!\n",
		       pci_name(pdev), rf_name);
		err = -ENODEV;
		goto err_iounmap;
	}

	if (!is_valid_ether_addr(priv->mac_addr)) {
		printk(KERN_WARNING "%s (rtl8180): Invalid hwaddr! Using"
		       " randomly generated MAC addr\n", pci_name(pdev));
		eth_random_addr(priv->mac_addr);
	}
	SET_IEEE80211_PERM_ADDR(dev, priv->mac_addr);

	spin_lock_init(&priv->lock);

	err = ieee80211_register_hw(dev);
	if (err) {
		printk(KERN_ERR "%s (rtl8180): Cannot register device\n",
		       pci_name(pdev));
		goto err_iounmap;
	}

	wiphy_info(dev->wiphy, "hwaddr %pm, %s + %s\n",
		   priv->mac_addr, chip_name, priv->rf->name);

	return 0;

 err_iounmap:
	pci_iounmap(pdev, priv->map);

 err_free_dev:
	ieee80211_free_hw(dev);

 err_free_reg:
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	return err;
}

static void rtl8180_remove(struct pci_dev *pdev)
{
	struct ieee80211_hw *dev = pci_get_drvdata(pdev);
	struct rtl8180_priv *priv;

	if (!dev)
		return;

	ieee80211_unregister_hw(dev);

	priv = dev->priv;

	pci_iounmap(pdev, priv->map);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	ieee80211_free_hw(dev);
}

#ifdef CONFIG_PM
static int rtl8180_suspend(struct pci_dev *pdev, pm_message_t state)
{
	pci_save_state(pdev);
	pci_set_power_state(pdev, pci_choose_state(pdev, state));
	return 0;
}

static int rtl8180_resume(struct pci_dev *pdev)
{
	pci_set_power_state(pdev, PCI_D0);
	pci_restore_state(pdev);
	return 0;
}

#endif /* CONFIG_PM */

static struct pci_driver rtl8180_driver = {
	.name		= KBUILD_MODNAME,
	.id_table	= rtl8180_table,
	.probe		= rtl8180_probe,
	.remove		= rtl8180_remove,
#ifdef CONFIG_PM
	.suspend	= rtl8180_suspend,
	.resume		= rtl8180_resume,
#endif /* CONFIG_PM */
};

module_pci_driver(rtl8180_driver);
OpenPOWER on IntegriCloud