-
Notifications
You must be signed in to change notification settings - Fork 334
/
mt7603_mac.c
1394 lines (1130 loc) · 34.5 KB
/
mt7603_mac.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*
* Permission to use, copy, modify, and/or 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.
*/
#include <linux/etherdevice.h>
#include "mt7603.h"
#include "mt7603_mac.h"
#define MT_PSE_PAGE_SIZE 128
static u32
mt7603_ac_queue_mask0(u32 mask)
{
u32 ret = 0;
ret |= GENMASK(3, 0) * !!(mask & BIT(0));
ret |= GENMASK(8, 5) * !!(mask & BIT(1));
ret |= GENMASK(13, 10) * !!(mask & BIT(2));
ret |= GENMASK(19, 16) * !!(mask & BIT(3));
return ret;
}
static void
mt76_stop_tx_ac(struct mt7603_dev *dev, u32 mask)
{
mt76_set(dev, MT_WF_ARB_TX_STOP_0, mt7603_ac_queue_mask0(mask));
}
static void
mt76_start_tx_ac(struct mt7603_dev *dev, u32 mask)
{
mt76_set(dev, MT_WF_ARB_TX_START_0, mt7603_ac_queue_mask0(mask));
}
void mt7603_mac_set_timing(struct mt7603_dev *dev)
{
u32 cck = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 247) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 64);
u32 ofdm = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, 113) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, 64);
int offset = 3 * dev->coverage_class;
u32 reg_offset = FIELD_PREP(MT_TIMEOUT_VAL_PLCP, offset) |
FIELD_PREP(MT_TIMEOUT_VAL_CCA, offset);
int sifs;
if (dev->mt76.chandef.chan->band == NL80211_BAND_5GHZ)
sifs = 16;
else
sifs = 10;
mt7603_mac_stop(dev);
mt76_wr(dev, MT_TIMEOUT_CCK, cck + reg_offset);
mt76_wr(dev, MT_TIMEOUT_OFDM, ofdm + reg_offset);
mt76_wr(dev, MT_IFS,
FIELD_PREP(MT_IFS_EIFS, 360) |
FIELD_PREP(MT_IFS_RIFS, 2) |
FIELD_PREP(MT_IFS_SIFS, sifs) |
FIELD_PREP(MT_IFS_SLOT, dev->slottime));
mt7603_mac_start(dev);
}
static void
mt7603_wtbl_update(struct mt7603_dev *dev, int idx, u32 mask)
{
mt76_rmw(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_WLAN_IDX,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, idx) | mask);
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
}
static u32
mt7603_wtbl1_addr(int idx)
{
return MT_WTBL1_BASE + idx * MT_WTBL1_SIZE;
}
static u32
mt7603_wtbl2_addr(int idx)
{
/* Mapped to WTBL2 */
return MT_PCIE_REMAP_BASE_1 + idx * MT_WTBL2_SIZE;
}
static u32
mt7603_wtbl3_addr(int idx)
{
u32 base = mt7603_wtbl2_addr(MT7603_WTBL_SIZE);
return base + idx * MT_WTBL3_SIZE;
}
static u32
mt7603_wtbl4_addr(int idx)
{
u32 base = mt7603_wtbl3_addr(MT7603_WTBL_SIZE);
return base + idx * MT_WTBL4_SIZE;
}
void mt7603_wtbl_init(struct mt7603_dev *dev, int idx, int vif,
const u8 *mac_addr)
{
const void *_mac = mac_addr;
u32 addr = mt7603_wtbl1_addr(idx);
u32 w0;
int i;
w0 = FIELD_PREP(MT_WTBL1_W0_ADDR_HI, get_unaligned_le16(_mac + 4));
if (vif < 0)
vif = 0;
else
w0 |= MT_WTBL1_W0_RX_CHECK_A1;
w0 |= FIELD_PREP(MT_WTBL1_W0_MUAR_IDX, vif);
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
mt76_set(dev, addr + 0 * 4, w0);
mt76_set(dev, addr + 1 * 4,
FIELD_PREP(MT_WTBL1_W1_ADDR_LO, get_unaligned_le32(_mac)));
mt76_set(dev, addr + 2 * 4, MT_WTBL1_W2_ADMISSION_CONTROL);
mt76_stop_tx_ac(dev, GENMASK(3, 0));
addr = mt7603_wtbl2_addr(idx);
for (i = 0; i < MT_WTBL2_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_WTBL2);
mt76_start_tx_ac(dev, GENMASK(3, 0));
addr = mt7603_wtbl3_addr(idx);
for (i = 0; i < MT_WTBL3_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
addr = mt7603_wtbl4_addr(idx);
for (i = 0; i < MT_WTBL4_SIZE; i += 4)
mt76_wr(dev, addr + i, 0);
}
void mt7603_wtbl_set_ps(struct mt7603_dev *dev, int idx, bool enabled)
{
u32 addr = mt7603_wtbl1_addr(idx);
u32 reg = mt76_rr(dev, addr + 3 * 4);
u32 val = (reg & ~MT_WTBL1_W3_SKIP_TX) | (enabled * MT_WTBL1_W3_SKIP_TX);
if (reg == val)
return;
mt76_set(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
mt76_wr(dev, addr + 3 * 4, val);
mt76_clear(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
}
void mt7603_wtbl_clear(struct mt7603_dev *dev, int idx)
{
int wtbl2_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL2_SIZE;
int wtbl2_frame = idx / wtbl2_frame_size;
int wtbl2_entry = idx % wtbl2_frame_size;
int wtbl3_base_frame = MT_WTBL3_OFFSET / MT_PSE_PAGE_SIZE;
int wtbl3_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL3_SIZE;
int wtbl3_frame = wtbl3_base_frame + idx / wtbl3_frame_size;
int wtbl3_entry = (idx % wtbl3_frame_size) * 2;
int wtbl4_base_frame = MT_WTBL4_OFFSET / MT_PSE_PAGE_SIZE;
int wtbl4_frame_size = MT_PSE_PAGE_SIZE / MT_WTBL4_SIZE;
int wtbl4_frame = wtbl4_base_frame + idx / wtbl4_frame_size;
int wtbl4_entry = idx % wtbl4_frame_size;
u32 addr = MT_WTBL1_BASE + idx * MT_WTBL1_SIZE;
int i;
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
mt76_wr(dev, addr + 0 * 4,
MT_WTBL1_W0_RX_CHECK_A1 |
MT_WTBL1_W0_RX_CHECK_A2 |
MT_WTBL1_W0_RX_VALID);
mt76_wr(dev, addr + 1 * 4, 0);
mt76_wr(dev, addr + 2 * 4, 0);
mt76_set(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
mt76_wr(dev, addr + 3 * 4,
FIELD_PREP(MT_WTBL1_W3_WTBL2_FRAME_ID, wtbl2_frame) |
FIELD_PREP(MT_WTBL1_W3_WTBL2_ENTRY_ID, wtbl2_entry) |
FIELD_PREP(MT_WTBL1_W3_WTBL4_FRAME_ID, wtbl4_frame) |
MT_WTBL1_W3_I_PSM | MT_WTBL1_W3_KEEP_I_PSM);
mt76_wr(dev, addr + 4 * 4,
FIELD_PREP(MT_WTBL1_W4_WTBL3_FRAME_ID, wtbl3_frame) |
FIELD_PREP(MT_WTBL1_W4_WTBL3_ENTRY_ID, wtbl3_entry) |
FIELD_PREP(MT_WTBL1_W4_WTBL4_ENTRY_ID, wtbl4_entry));
mt76_clear(dev, MT_WTBL1_OR, MT_WTBL1_OR_PSM_WRITE);
addr = mt7603_wtbl2_addr(idx);
/* Clear BA information */
mt76_wr(dev, addr + (15 * 4), 0);
mt76_stop_tx_ac(dev, GENMASK(3, 0));
for (i = 2; i <= 4; i++)
mt76_wr(dev, addr + (i * 4), 0);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_WTBL2);
mt76_start_tx_ac(dev, GENMASK(3, 0));
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_RX_COUNT_CLEAR);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_TX_COUNT_CLEAR);
mt7603_wtbl_update(dev, idx, MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
}
void mt7603_wtbl_update_cap(struct mt7603_dev *dev, struct ieee80211_sta *sta)
{
struct mt7603_sta *msta = (struct mt7603_sta *) sta->drv_priv;
int idx = msta->wcid.idx;
u32 addr;
u32 val;
addr = mt7603_wtbl1_addr(idx);
val = mt76_rr(dev, addr + 2 * 4);
val &= MT_WTBL1_W2_KEY_TYPE | MT_WTBL1_W2_ADMISSION_CONTROL;
val |= FIELD_PREP(MT_WTBL1_W2_AMPDU_FACTOR, sta->ht_cap.ampdu_factor) |
FIELD_PREP(MT_WTBL1_W2_MPDU_DENSITY, sta->ht_cap.ampdu_density) |
MT_WTBL1_W2_TXS_BAF_REPORT;
if (sta->ht_cap.cap)
val |= MT_WTBL1_W2_HT;
if (sta->vht_cap.cap)
val |= MT_WTBL1_W2_VHT;
mt76_wr(dev, addr + 2 * 4, val);
addr = mt7603_wtbl2_addr(idx);
val = mt76_rr(dev, addr + 9 * 4);
val &= ~(MT_WTBL2_W9_SHORT_GI_20 | MT_WTBL2_W9_SHORT_GI_40 |
MT_WTBL2_W9_SHORT_GI_80);
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20)
val |= MT_WTBL2_W9_SHORT_GI_20;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
val |= MT_WTBL2_W9_SHORT_GI_40;
mt76_wr(dev, addr + 9 * 4, val);
}
void mt7603_mac_rx_ba_reset(struct mt7603_dev *dev, void *addr, u8 tid)
{
mt76_wr(dev, MT_BA_CONTROL_0, get_unaligned_le32(addr));
mt76_wr(dev, MT_BA_CONTROL_1,
(get_unaligned_le16(addr + 4) |
FIELD_PREP(MT_BA_CONTROL_1_TID, tid) |
MT_BA_CONTROL_1_RESET));
}
void mt7603_mac_tx_ba_reset(struct mt7603_dev *dev, int wcid, int tid, int ssn,
int ba_size)
{
u32 addr = mt7603_wtbl2_addr(wcid);
u32 tid_mask = FIELD_PREP(MT_WTBL2_W15_BA_EN_TIDS, BIT(tid)) |
(MT_WTBL2_W15_BA_WIN_SIZE <<
(tid * MT_WTBL2_W15_BA_WIN_SIZE_SHIFT));
u32 tid_val;
int i;
if (ba_size < 0) {
/* disable */
mt76_clear(dev, addr + (15 * 4), tid_mask);
return;
}
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
mt7603_mac_stop(dev);
switch (tid) {
case 0:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID0_SN, ssn);
break;
case 1:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID1_SN, ssn);
break;
case 2:
mt76_rmw_field(dev, addr + (2 * 4), MT_WTBL2_W2_TID2_SN_LO,
ssn);
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID2_SN_HI,
ssn >> 8);
break;
case 3:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID3_SN, ssn);
break;
case 4:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID4_SN, ssn);
break;
case 5:
mt76_rmw_field(dev, addr + (3 * 4), MT_WTBL2_W3_TID5_SN_LO,
ssn);
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID5_SN_HI,
ssn >> 4);
break;
case 6:
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID6_SN, ssn);
break;
case 7:
mt76_rmw_field(dev, addr + (4 * 4), MT_WTBL2_W4_TID7_SN, ssn);
break;
}
mt7603_wtbl_update(dev, wcid, MT_WTBL_UPDATE_WTBL2);
mt7603_mac_start(dev);
for (i = 7; i > 0; i--) {
if (ba_size >= MT_AGG_SIZE_LIMIT(i))
break;
}
tid_val = FIELD_PREP(MT_WTBL2_W15_BA_EN_TIDS, BIT(tid)) |
i << (tid * MT_WTBL2_W15_BA_WIN_SIZE_SHIFT);
mt76_rmw(dev, addr + (15 * 4), tid_mask, tid_val);
}
static int
mt7603_get_rate(struct mt7603_dev *dev, struct ieee80211_supported_band *sband,
int idx, bool cck)
{
int offset = 0;
int len = sband->n_bitrates;
int i;
if (cck) {
if (sband == &dev->mt76.sband_5g.sband)
return 0;
idx &= ~BIT(2); /* short preamble */
} else if (sband == &dev->mt76.sband_2g.sband) {
offset = 4;
}
for (i = offset; i < len; i++) {
if ((sband->bitrates[i].hw_value & GENMASK(7, 0)) == idx)
return i;
}
return 0;
}
static struct mt76_wcid *
mt7603_rx_get_wcid(struct mt7603_dev *dev, u8 idx, bool unicast)
{
struct mt7603_sta *sta;
struct mt76_wcid *wcid;
if (idx >= ARRAY_SIZE(dev->wcid))
return NULL;
wcid = rcu_dereference(dev->wcid[idx]);
if (unicast || !wcid)
return wcid;
sta = container_of(wcid, struct mt7603_sta, wcid);
return &sta->vif->wcid;
}
static void
mt7603_insert_ccmp_hdr(struct sk_buff *skb, u8 key_id)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
int hdr_len = ieee80211_get_hdrlen_from_skb(skb);
u8 *pn = status->iv;
u8 *hdr;
__skb_push(skb, 8);
memmove(skb->data, skb->data + 8, hdr_len);
hdr = skb->data + hdr_len;
hdr[0] = pn[5];
hdr[1] = pn[4];
hdr[2] = 0;
hdr[3] = 0x20 | (key_id << 6);
hdr[4] = pn[3];
hdr[5] = pn[2];
hdr[6] = pn[1];
hdr[7] = pn[0];
status->flag &= ~RX_FLAG_IV_STRIPPED;
}
int
mt7603_mac_fill_rx(struct mt7603_dev *dev, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
struct ieee80211_supported_band *sband;
struct ieee80211_hdr *hdr;
__le32 *rxd = (__le32 *) skb->data;
u32 rxd0 = le32_to_cpu(rxd[0]);
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
bool unicast = rxd1 & MT_RXD1_NORMAL_U2M;
bool insert_ccmp_hdr = false;
bool remove_pad;
int idx;
int i;
memset(status, 0, sizeof(*status));
i = FIELD_GET(MT_RXD1_NORMAL_CH_FREQ, rxd1);
sband = (i & 1) ? &dev->mt76.sband_5g.sband : &dev->mt76.sband_2g.sband;
i >>= 1;
idx = FIELD_GET(MT_RXD2_NORMAL_WLAN_IDX, rxd2);
status->wcid = mt7603_rx_get_wcid(dev, idx, unicast);
status->band = sband->band;
if (i < sband->n_channels)
status->freq = sband->channels[i].center_freq;
if (rxd2 & MT_RXD2_NORMAL_FCS_ERR)
status->flag |= RX_FLAG_FAILED_FCS_CRC;
if (rxd2 & MT_RXD2_NORMAL_TKIP_MIC_ERR)
status->flag |= RX_FLAG_MMIC_ERROR;
if (FIELD_GET(MT_RXD2_NORMAL_SEC_MODE, rxd2) != 0 &&
!(rxd2 & (MT_RXD2_NORMAL_CLM | MT_RXD2_NORMAL_CM))) {
status->flag |= RX_FLAG_DECRYPTED;
status->flag |= RX_FLAG_IV_STRIPPED;
status->flag |= RX_FLAG_MMIC_STRIPPED | RX_FLAG_MIC_STRIPPED;
}
remove_pad = rxd1 & MT_RXD1_NORMAL_HDR_OFFSET;
if (rxd2 & MT_RXD2_NORMAL_MAX_LEN_ERROR)
return -EINVAL;
if (WARN_ON_ONCE(!sband->channels))
return -EINVAL;
rxd += 4;
if (rxd0 & MT_RXD0_NORMAL_GROUP_4) {
rxd += 4;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_1) {
u8 *data = (u8 *) rxd;
if (status->flag & RX_FLAG_DECRYPTED) {
status->iv[0] = data[5];
status->iv[1] = data[4];
status->iv[2] = data[3];
status->iv[3] = data[2];
status->iv[4] = data[1];
status->iv[5] = data[0];
insert_ccmp_hdr = FIELD_GET(MT_RXD2_NORMAL_FRAG, rxd2);
}
rxd += 4;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_2) {
rxd += 2;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
if (rxd0 & MT_RXD0_NORMAL_GROUP_3) {
u32 rxdg0 = le32_to_cpu(rxd[0]);
u32 rxdg3 = le32_to_cpu(rxd[3]);
bool cck = false;
i = FIELD_GET(MT_RXV1_TX_RATE, rxdg0);
switch (FIELD_GET(MT_RXV1_TX_MODE, rxdg0)) {
case MT_PHY_TYPE_CCK:
cck = true;
/* fall through */
case MT_PHY_TYPE_OFDM:
i = mt7603_get_rate(dev, sband, i, cck);
break;
case MT_PHY_TYPE_HT_GF:
case MT_PHY_TYPE_HT:
status->encoding = RX_ENC_HT;
break;
case MT_PHY_TYPE_VHT:
status->encoding = RX_ENC_VHT;
break;
default:
return -EINVAL;
}
if (rxdg0 & MT_RXV1_HT_SHORT_GI)
status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
status->enc_flags |= RX_ENC_FLAG_STBC_MASK *
FIELD_GET(MT_RXV1_HT_STBC, rxdg0);
status->rate_idx = i;
status->chains = BIT(0) | BIT(1);
status->chain_signal[0] = FIELD_GET(MT_RXV4_IB_RSSI0, rxdg3) +
dev->rssi_offset[0];
status->chain_signal[1] = FIELD_GET(MT_RXV4_IB_RSSI1, rxdg3) +
dev->rssi_offset[1];
status->signal = max(status->chain_signal[0], status->chain_signal[1]);
if (FIELD_GET(MT_RXV1_FRAME_MODE, rxdg0) == 1)
status->bw = RATE_INFO_BW_40;
rxd += 6;
if ((u8 *) rxd - skb->data >= skb->len)
return -EINVAL;
}
skb_pull(skb, (u8 *) rxd - skb->data + 2 * remove_pad);
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
mt7603_insert_ccmp_hdr(skb, key_id);
}
hdr = (struct ieee80211_hdr *) skb->data;
if (!status->wcid || !ieee80211_is_data_qos(hdr->frame_control))
return 0;
status->aggr = unicast;
status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
status->seqno = hdr->seq_ctrl >> 4;
return 0;
}
static u16
mt7603_mac_tx_rate_val(struct mt7603_dev *dev,
const struct ieee80211_tx_rate *rate, bool stbc, u8 *bw)
{
u8 phy, nss, rate_idx;
u16 rateval;
*bw = 0;
if (rate->flags & IEEE80211_TX_RC_MCS) {
rate_idx = rate->idx;
nss = 1 + (rate->idx >> 3);
phy = MT_PHY_TYPE_HT;
if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
phy = MT_PHY_TYPE_HT_GF;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
*bw = 1;
} else {
const struct ieee80211_rate *r;
int band = dev->mt76.chandef.chan->band;
u16 val;
nss = 1;
r = &mt76_hw(dev)->wiphy->bands[band]->bitrates[rate->idx];
if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
val = r->hw_value_short;
else
val = r->hw_value;
phy = val >> 8;
rate_idx = val & 0xff;
}
rateval = (FIELD_PREP(MT_TX_RATE_IDX, rate_idx) |
FIELD_PREP(MT_TX_RATE_MODE, phy));
if (stbc && nss == 1)
rateval |= MT_TX_RATE_STBC;
return rateval;
}
void mt7603_wtbl_set_rates(struct mt7603_dev *dev, struct mt7603_sta *sta,
struct ieee80211_tx_rate *probe_rate,
struct ieee80211_tx_rate *rates)
{
int wcid = sta->wcid.idx;
u32 addr = mt7603_wtbl2_addr(wcid);
bool stbc = false;
int n_rates = sta->n_rates;
u8 bw, bw_prev, bw_idx = 0;
u16 val[4];
u16 probe_val;
u32 w9 = mt76_rr(dev, addr + 9 * 4);
int count;
int i;
if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000))
return;
for (i = 0, count = 0; i < n_rates; i++)
count += max_t(int, 2 * MT7603_RATE_RETRY, rates[i].count);
for (i = n_rates; i < 4; i++)
rates[i] = rates[n_rates - 1];
w9 &= MT_WTBL2_W9_SHORT_GI_20 | MT_WTBL2_W9_SHORT_GI_40 |
MT_WTBL2_W9_SHORT_GI_80;
val[0] = mt7603_mac_tx_rate_val(dev, &rates[0], stbc, &bw);
bw_prev = bw;
if (probe_rate) {
probe_val = mt7603_mac_tx_rate_val(dev, probe_rate, stbc, &bw);
if (bw)
bw_idx = 1;
else
bw_prev = 0;
} else {
probe_val = val[0];
}
w9 |= FIELD_PREP(MT_WTBL2_W9_CC_BW_SEL, bw);
w9 |= FIELD_PREP(MT_WTBL2_W9_BW_CAP, bw);
val[1] = mt7603_mac_tx_rate_val(dev, &rates[1], stbc, &bw);
if (bw_prev) {
bw_idx = 3;
bw_prev = bw;
}
val[2] = mt7603_mac_tx_rate_val(dev, &rates[2], stbc, &bw);
if (bw_prev) {
bw_idx = 5;
bw_prev = bw;
}
val[3] = mt7603_mac_tx_rate_val(dev, &rates[3], stbc, &bw);
if (bw_prev)
bw_idx = 7;
w9 |= FIELD_PREP(MT_WTBL2_W9_CHANGE_BW_RATE,
bw_idx ? bw_idx - 1 : 7);
mt76_wr(dev, MT_WTBL_RIUCR0, w9);
mt76_wr(dev, MT_WTBL_RIUCR1,
FIELD_PREP(MT_WTBL_RIUCR1_RATE0, probe_val) |
FIELD_PREP(MT_WTBL_RIUCR1_RATE1, val[0]) |
FIELD_PREP(MT_WTBL_RIUCR1_RATE2_LO, val[0]));
mt76_wr(dev, MT_WTBL_RIUCR2,
FIELD_PREP(MT_WTBL_RIUCR2_RATE2_HI, val[0] >> 8) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE3, val[1]) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE4, val[1]) |
FIELD_PREP(MT_WTBL_RIUCR2_RATE5_LO, val[2]));
mt76_wr(dev, MT_WTBL_RIUCR3,
FIELD_PREP(MT_WTBL_RIUCR3_RATE5_HI, val[2] >> 4) |
FIELD_PREP(MT_WTBL_RIUCR3_RATE6, val[2]) |
FIELD_PREP(MT_WTBL_RIUCR3_RATE7, val[3]));
mt76_wr(dev, MT_WTBL_UPDATE,
FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, wcid) |
MT_WTBL_UPDATE_RATE_UPDATE |
MT_WTBL_UPDATE_TX_COUNT_CLEAR);
if (!sta->wcid.tx_rate_set)
mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000);
sta->rate_count = count;
sta->wcid.tx_rate_set = true;
}
static enum mt7603_cipher_type
mt7603_mac_get_key_info(struct ieee80211_key_conf *key, u8 *key_data)
{
memset(key_data, 0, 32);
if (!key)
return MT_CIPHER_NONE;
if (key->keylen > 32)
return MT_CIPHER_NONE;
memcpy(key_data, key->key, key->keylen);
switch(key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
return MT_CIPHER_WEP40;
case WLAN_CIPHER_SUITE_WEP104:
return MT_CIPHER_WEP104;
case WLAN_CIPHER_SUITE_TKIP:
return MT_CIPHER_TKIP;
case WLAN_CIPHER_SUITE_CCMP:
return MT_CIPHER_AES_CCMP;
default:
return MT_CIPHER_NONE;
}
}
int mt7603_wtbl_set_key(struct mt7603_dev *dev, int wcid,
struct ieee80211_key_conf *key)
{
enum mt7603_cipher_type cipher;
u32 addr = mt7603_wtbl3_addr(wcid);
u8 key_data[32];
int key_len = sizeof(key_data);
cipher = mt7603_mac_get_key_info(key, key_data);
if (cipher == MT_CIPHER_NONE && key)
return -EOPNOTSUPP;
if (key && (cipher == MT_CIPHER_WEP40 || cipher == MT_CIPHER_WEP104)) {
addr += key->keyidx * 16;
key_len = 16;
}
mt76_wr_copy(dev, addr, key_data, key_len);
addr = mt7603_wtbl1_addr(wcid);
mt76_rmw_field(dev, addr + 2 * 4, MT_WTBL1_W2_KEY_TYPE, cipher);
if (key)
mt76_rmw_field(dev, addr, MT_WTBL1_W0_KEY_IDX, key->keyidx);
mt76_rmw_field(dev, addr, MT_WTBL1_W0_RX_KEY_VALID, !!key);
return 0;
}
static int
mt7603_mac_write_txwi(struct mt7603_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
int pid, struct ieee80211_key_conf *key)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_vif *vif = info->control.vif;
struct mt7603_vif *mvif;
int wlan_idx;
int hdr_len = ieee80211_get_hdrlen_from_skb(skb);
int tx_count = 8;
u8 frame_type, frame_subtype;
u16 fc = le16_to_cpu(hdr->frame_control);
u8 vif_idx = 0;
u8 bw;
if (vif) {
mvif = (struct mt7603_vif *) vif->drv_priv;
vif_idx = mvif->idx;
if (vif_idx && q >= &dev->mt76.q_tx[MT_TXQ_BEACON])
vif_idx += 0x10;
}
if (sta) {
struct mt7603_sta *msta = (struct mt7603_sta *) sta->drv_priv;
tx_count = msta->rate_count;
}
if (wcid)
wlan_idx = wcid->idx;
else
wlan_idx = MT7603_WTBL_RESERVED;
frame_type = (fc & IEEE80211_FCTL_FTYPE) >> 2;
frame_subtype = (fc & IEEE80211_FCTL_STYPE) >> 4;
txwi[0] = cpu_to_le32(
FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
FIELD_PREP(MT_TXD0_Q_IDX, q->hw_idx)
);
txwi[1] = cpu_to_le32(
MT_TXD1_LONG_FORMAT |
FIELD_PREP(MT_TXD1_OWN_MAC, vif_idx) |
FIELD_PREP(MT_TXD1_TID, skb->priority &
IEEE80211_QOS_CTL_TID_MASK) |
FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
FIELD_PREP(MT_TXD1_HDR_INFO, hdr_len / 2) |
FIELD_PREP(MT_TXD1_WLAN_IDX, wlan_idx) |
FIELD_PREP(MT_TXD1_PROTECTED, !!key)
);
if (info->flags & IEEE80211_TX_CTL_NO_ACK) {
txwi[1] |= cpu_to_le32(MT_TXD1_NO_ACK);
pid = MT_PID_NOACK;
}
txwi[2] = cpu_to_le32(
FIELD_PREP(MT_TXD2_FRAME_TYPE, frame_type) |
FIELD_PREP(MT_TXD2_SUB_TYPE, frame_subtype) |
FIELD_PREP(MT_TXD2_MULTICAST, is_multicast_ether_addr(hdr->addr1))
);
if (!(info->flags & IEEE80211_TX_CTL_AMPDU))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
txwi[4] = 0;
txwi[5] = cpu_to_le32(
MT_TXD5_TX_STATUS_HOST | MT_TXD5_SW_POWER_MGMT |
FIELD_PREP(MT_TXD5_PID, pid)
);
txwi[6] = 0;
if (rate->idx >= 0 && rate->count &&
!(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) {
bool stbc = info->flags & IEEE80211_TX_CTL_STBC;
u16 rateval = mt7603_mac_tx_rate_val(dev, rate, stbc, &bw);
txwi[6] |= cpu_to_le32(
MT_TXD6_FIXED_RATE |
MT_TXD6_FIXED_BW |
FIELD_PREP(MT_TXD6_BW, bw) |
FIELD_PREP(MT_TXD6_TX_RATE, rateval)
);
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
txwi[6] |= cpu_to_le32(MT_TXD6_SGI);
if (!(rate->flags & IEEE80211_TX_RC_MCS))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
tx_count = rate->count;
}
/* use maximum tx count for beacons */
if (q->hw_idx == MT_TX_HW_QUEUE_BCN)
tx_count = 0x1f;
txwi[3] = cpu_to_le32(
FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count) |
FIELD_PREP(MT_TXD3_SEQ, le16_to_cpu(hdr->seq_ctrl))
);
if (key) {
u64 pn = atomic64_inc_return(&key->tx_pn);
txwi[3] |= cpu_to_le32(MT_TXD3_PN_VALID);
txwi[4] = cpu_to_le32(pn & GENMASK(31, 0));
txwi[5] |= cpu_to_le32(FIELD_PREP(MT_TXD5_PN_HIGH, pn >> 32));
}
txwi[7] = 0;
return 0;
}
static int
mt7603_add_tx_status_skb(struct mt7603_dev *dev, struct mt7603_sta *msta,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt7603_cb *cb = mt7603_skb_cb(skb);
int pid;
if (!msta)
return 0;
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
return 0;
if (!(info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
IEEE80211_TX_CTL_RATE_CTRL_PROBE)) &&
info->control.rates[0].idx < 0)
return 0;
spin_lock_bh(&dev->status_lock);
memset(cb, 0, sizeof(*cb));
msta->pid = (msta->pid + 1) & MT_PID_INDEX;
if (!msta->pid || msta->pid == MT_PID_NOACK)
msta->pid = 1;
pid = msta->pid;
cb->wcid = msta->wcid.idx;
cb->pktid = pid;
cb->jiffies = jiffies;
__skb_queue_tail(&dev->status_list, skb);
spin_unlock_bh(&dev->status_lock);
return pid;
}
int mt7603_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
u32 *tx_info)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
struct mt7603_sta *msta = container_of(wcid, struct mt7603_sta, wcid);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_key_conf *key = info->control.hw_key;
int pid;
if (!wcid) {
wcid = &dev->global_sta.wcid;
} else {
if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
IEEE80211_TX_CTL_CLEAR_PS_FILT))
mt7603_wtbl_set_ps(dev, wcid->idx, false);
}
pid = mt7603_add_tx_status_skb(dev, msta, skb);
if (!pid)
skb->next = skb->prev = NULL;
if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) {
spin_lock_bh(&dev->mt76.lock);
msta->rate_probe = true;
mt7603_wtbl_set_rates(dev, msta, &info->control.rates[0],
msta->rates);
spin_unlock_bh(&dev->mt76.lock);
}
mt7603_mac_write_txwi(dev, txwi_ptr, skb, q, wcid, sta, pid, key);
return 0;
}
static bool
mt7603_fill_txs(struct mt7603_dev *dev, struct mt7603_sta *sta,
struct ieee80211_tx_info *info, __le32 *txs_data)
{
bool final_mpdu;
bool ack_timeout;
bool fixed_rate;
bool probe;
bool ampdu;
int count;
u32 txs;
u8 pid;
int idx;
int i;
fixed_rate = info->status.rates[0].count;
probe = !!(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
txs = le32_to_cpu(txs_data[4]);
final_mpdu = txs & MT_TXS4_ACKED_MPDU;
ampdu = !fixed_rate && (txs & MT_TXS4_AMPDU);
pid = FIELD_GET(MT_TXS4_PID, txs);
count = FIELD_GET(MT_TXS4_TX_COUNT, txs);
txs = le32_to_cpu(txs_data[0]);
ack_timeout = txs & MT_TXS0_ACK_TIMEOUT;
if (!(txs & MT_TXS0_ACK_ERROR_MASK)) {
if (!fixed_rate && !ack_timeout)
sta->ampdu_acked++;
info->flags |= IEEE80211_TX_STAT_ACK;
}
if (!fixed_rate)
sta->ampdu_count++;
sta->ampdu_tx_count = max_t(int, sta->ampdu_tx_count, count);
if (ampdu && !final_mpdu)
return false;
if (fixed_rate) {
info->status.ampdu_len = 1;
info->status.ampdu_ack_len = !!(info->flags & IEEE80211_TX_STAT_ACK);
} else {
info->status.ampdu_len = sta->ampdu_count;
info->status.ampdu_ack_len = sta->ampdu_acked;
}
if (ampdu || (info->flags & IEEE80211_TX_CTL_AMPDU))
info->flags |= IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_CTL_AMPDU;
count = sta->ampdu_tx_count;
sta->ampdu_count = 0;
sta->ampdu_acked = 0;
sta->ampdu_tx_count = 0;
if (fixed_rate && !probe) {
info->status.rates[0].count = count;
return true;
}
for (i = 0, idx = 0; i < ARRAY_SIZE(info->status.rates); i++) {
int cur_count = min_t(int, count, 2 * MT7603_RATE_RETRY);
if (!i && probe) {
cur_count = 1;
} else {
info->status.rates[i] = sta->rates[idx];
idx++;
}
if (i && info->status.rates[i].idx < 0) {
info->status.rates[i - 1].count += count;
break;
}
if (!count) {
info->status.rates[i].idx = -1;
break;
}
info->status.rates[i].count = cur_count;
count -= cur_count;
}
return true;