summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/iwlwifi/mvm/power.c
blob: 2b2d10800a55e1b90f3f4da4c91bd6cfe09629a8 (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
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <net/mac80211.h>

#include "iwl-debug.h"
#include "mvm.h"
#include "iwl-modparams.h"
#include "fw-api-power.h"

#define POWER_KEEP_ALIVE_PERIOD_SEC    25

static
int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
				   struct iwl_beacon_filter_cmd *cmd,
				   u32 flags)
{
	IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
			le32_to_cpu(cmd->ba_enable_beacon_abort));
	IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
			le32_to_cpu(cmd->ba_escape_timer));
	IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
			le32_to_cpu(cmd->bf_debug_flag));
	IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
			le32_to_cpu(cmd->bf_enable_beacon_filter));
	IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
			le32_to_cpu(cmd->bf_energy_delta));
	IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
			le32_to_cpu(cmd->bf_escape_timer));
	IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
			le32_to_cpu(cmd->bf_roaming_energy_delta));
	IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
			le32_to_cpu(cmd->bf_roaming_state));
	IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
			le32_to_cpu(cmd->bf_temp_threshold));
	IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
			le32_to_cpu(cmd->bf_temp_fast_filter));
	IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
			le32_to_cpu(cmd->bf_temp_slow_filter));

	return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
				    sizeof(struct iwl_beacon_filter_cmd), cmd);
}

static
void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
					  struct ieee80211_vif *vif,
					  struct iwl_beacon_filter_cmd *cmd)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (vif->bss_conf.cqm_rssi_thold) {
		cmd->bf_energy_delta =
			cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
		/* fw uses an absolute value for this */
		cmd->bf_roaming_state =
			cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
	}
	cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
}

static void iwl_mvm_power_log(struct iwl_mvm *mvm,
			      struct iwl_mac_power_cmd *cmd)
{
	IWL_DEBUG_POWER(mvm,
			"Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
			cmd->id_and_color, iwlmvm_mod_params.power_scheme,
			le16_to_cpu(cmd->flags));
	IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
			le16_to_cpu(cmd->keep_alive_seconds));

	if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
		IWL_DEBUG_POWER(mvm, "Disable power management\n");
		return;
	}

	IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
			le32_to_cpu(cmd->rx_data_timeout));
	IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
			le32_to_cpu(cmd->tx_data_timeout));
	if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
		IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
				cmd->skip_dtim_periods);
	if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
		IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
				cmd->lprx_rssi_threshold);
	if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
		IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
		IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
				le32_to_cpu(cmd->rx_data_timeout_uapsd));
		IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
				le32_to_cpu(cmd->tx_data_timeout_uapsd));
		IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
		IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
		IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
	}
}

static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
					  struct ieee80211_vif *vif,
					  struct iwl_mac_power_cmd *cmd)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	enum ieee80211_ac_numbers ac;
	bool tid_found = false;

	for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
		if (!mvmvif->queue_params[ac].uapsd)
			continue;

		if (mvm->cur_ucode != IWL_UCODE_WOWLAN)
			cmd->flags |=
				cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);

		cmd->uapsd_ac_flags |= BIT(ac);

		/* QNDP TID - the highest TID with no admission control */
		if (!tid_found && !mvmvif->queue_params[ac].acm) {
			tid_found = true;
			switch (ac) {
			case IEEE80211_AC_VO:
				cmd->qndp_tid = 6;
				break;
			case IEEE80211_AC_VI:
				cmd->qndp_tid = 5;
				break;
			case IEEE80211_AC_BE:
				cmd->qndp_tid = 0;
				break;
			case IEEE80211_AC_BK:
				cmd->qndp_tid = 1;
				break;
			}
		}
	}

	if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
		return;

	cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);

	if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
				    BIT(IEEE80211_AC_VI) |
				    BIT(IEEE80211_AC_BE) |
				    BIT(IEEE80211_AC_BK))) {
		cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
		cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
		cmd->snooze_window = (mvm->cur_ucode == IWL_UCODE_WOWLAN) ?
			cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
			cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
	}

	cmd->uapsd_max_sp = IWL_UAPSD_MAX_SP;

	if (mvm->cur_ucode == IWL_UCODE_WOWLAN || cmd->flags &
	    cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
		cmd->rx_data_timeout_uapsd =
			cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
		cmd->tx_data_timeout_uapsd =
			cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
	} else {
		cmd->rx_data_timeout_uapsd =
			cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
		cmd->tx_data_timeout_uapsd =
			cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
	}

	if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
		cmd->heavy_tx_thld_packets =
			IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
		cmd->heavy_rx_thld_packets =
			IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
	} else {
		cmd->heavy_tx_thld_packets =
			IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
		cmd->heavy_rx_thld_packets =
			IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
	}
	cmd->heavy_tx_thld_percentage =
		IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
	cmd->heavy_rx_thld_percentage =
		IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
}

static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
				       struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
		    ETH_ALEN))
		return false;

	if (vif->p2p &&
	    !(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS_UAPSD))
		return false;
	/*
	 * Avoid using uAPSD if P2P client is associated to GO that uses
	 * opportunistic power save. This is due to current FW limitation.
	 */
	if (vif->p2p &&
	    (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
	    IEEE80211_P2P_OPPPS_ENABLE_BIT))
		return false;

	/*
	 * Avoid using uAPSD if client is in DCM -
	 * low latency issue in Miracast
	 */
	if (iwl_mvm_phy_ctx_count(mvm) >= 2)
		return false;

	return true;
}

static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
				    struct ieee80211_vif *vif,
				    struct iwl_mac_power_cmd *cmd)
{
	struct ieee80211_hw *hw = mvm->hw;
	struct ieee80211_chanctx_conf *chanctx_conf;
	struct ieee80211_channel *chan;
	int dtimper, dtimper_msec;
	int keep_alive;
	bool radar_detect = false;
	struct iwl_mvm_vif *mvmvif __maybe_unused =
		iwl_mvm_vif_from_mac80211(vif);

	cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
							    mvmvif->color));
	dtimper = hw->conf.ps_dtim_period ?: 1;

	/*
	 * Regardless of power management state the driver must set
	 * keep alive period. FW will use it for sending keep alive NDPs
	 * immediately after association. Check that keep alive period
	 * is at least 3 * DTIM
	 */
	dtimper_msec = dtimper * vif->bss_conf.beacon_int;
	keep_alive = max_t(int, 3 * dtimper_msec,
			   MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC);
	keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
	cmd->keep_alive_seconds = cpu_to_le16(keep_alive);

	if (mvm->ps_disabled)
		return;

	cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);

	if (!vif->bss_conf.ps || iwl_mvm_vif_low_latency(mvmvif) ||
	    !mvmvif->pm_enabled)
		return;

	cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);

	if (vif->bss_conf.beacon_rate &&
	    (vif->bss_conf.beacon_rate->bitrate == 10 ||
	     vif->bss_conf.beacon_rate->bitrate == 60)) {
		cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
		cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
	}

	/* Check if radar detection is required on current channel */
	rcu_read_lock();
	chanctx_conf = rcu_dereference(vif->chanctx_conf);
	WARN_ON(!chanctx_conf);
	if (chanctx_conf) {
		chan = chanctx_conf->def.chan;
		radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
	}
	rcu_read_unlock();

	/* Check skip over DTIM conditions */
	if (!radar_detect && (dtimper <= 10) &&
	    (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP ||
	     mvm->cur_ucode == IWL_UCODE_WOWLAN)) {
		cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
		cmd->skip_dtim_periods = 3;
	}

	if (mvm->cur_ucode != IWL_UCODE_WOWLAN) {
		cmd->rx_data_timeout =
			cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
		cmd->tx_data_timeout =
			cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
	} else {
		cmd->rx_data_timeout =
			cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
		cmd->tx_data_timeout =
			cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
	}

	if (iwl_mvm_power_allow_uapsd(mvm, vif))
		iwl_mvm_power_configure_uapsd(mvm, vif, cmd);

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
		cmd->keep_alive_seconds =
			cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
		if (mvmvif->dbgfs_pm.skip_over_dtim)
			cmd->flags |=
				cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
		else
			cmd->flags &=
				cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
	}
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
		cmd->rx_data_timeout =
			cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
		cmd->tx_data_timeout =
			cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
		cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
		if (mvmvif->dbgfs_pm.lprx_ena)
			cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
		else
			cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
	}
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
		cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
		if (mvmvif->dbgfs_pm.snooze_ena)
			cmd->flags |=
				cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
		else
			cmd->flags &=
				cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
	}
	if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
		u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
		if (mvmvif->dbgfs_pm.uapsd_misbehaving)
			cmd->flags |= cpu_to_le16(flag);
		else
			cmd->flags &= cpu_to_le16(flag);
	}
#endif /* CONFIG_IWLWIFI_DEBUGFS */
}

static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
					 struct ieee80211_vif *vif)
{
	struct iwl_mac_power_cmd cmd = {};

	iwl_mvm_power_build_cmd(mvm, vif, &cmd);
	iwl_mvm_power_log(mvm, &cmd);
#ifdef CONFIG_IWLWIFI_DEBUGFS
	memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
#endif

	return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
				    sizeof(cmd), &cmd);
}

int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
{
	struct iwl_device_power_cmd cmd = {
		.flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
	};

	if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
		mvm->ps_disabled = true;

	if (mvm->ps_disabled)
		cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);

#ifdef CONFIG_IWLWIFI_DEBUGFS
	if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
	    mvm->disable_power_off)
		cmd.flags &=
			cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
#endif
	IWL_DEBUG_POWER(mvm,
			"Sending device power command with flags = 0x%X\n",
			cmd.flags);

	return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
				    &cmd);
}

void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
		   ETH_ALEN))
		memset(mvmvif->uapsd_misbehaving_bssid, 0, ETH_ALEN);
}

static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
						     struct ieee80211_vif *vif)
{
	u8 *ap_sta_id = _data;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

	/* The ap_sta_id is not expected to change during current association
	 * so no explicit protection is needed
	 */
	if (mvmvif->ap_sta_id == *ap_sta_id)
		memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
		       ETH_ALEN);
}

int iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
					     struct iwl_rx_cmd_buffer *rxb,
					     struct iwl_device_cmd *cmd)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
	u8 ap_sta_id = le32_to_cpu(notif->sta_id);

	ieee80211_iterate_active_interfaces_atomic(
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);

	return 0;
}

struct iwl_power_vifs {
	struct iwl_mvm *mvm;
	struct ieee80211_vif *bf_vif;
	struct ieee80211_vif *bss_vif;
	struct ieee80211_vif *p2p_vif;
	struct ieee80211_vif *ap_vif;
	struct ieee80211_vif *monitor_vif;
	bool p2p_active;
	bool bss_active;
	bool ap_active;
	bool monitor_active;
	bool bss_tdls;
	bool p2p_tdls;
};

static void iwl_mvm_power_iterator(void *_data, u8 *mac,
				   struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_power_vifs *power_iterator = _data;

	mvmvif->pm_enabled = false;
	switch (ieee80211_vif_type_p2p(vif)) {
	case NL80211_IFTYPE_P2P_DEVICE:
		break;

	case NL80211_IFTYPE_P2P_GO:
	case NL80211_IFTYPE_AP:
		/* only a single MAC of the same type */
		WARN_ON(power_iterator->ap_vif);
		power_iterator->ap_vif = vif;
		if (mvmvif->phy_ctxt)
			if (mvmvif->phy_ctxt->id < MAX_PHYS)
				power_iterator->ap_active = true;
		break;

	case NL80211_IFTYPE_MONITOR:
		/* only a single MAC of the same type */
		WARN_ON(power_iterator->monitor_vif);
		power_iterator->monitor_vif = vif;
		if (mvmvif->phy_ctxt)
			if (mvmvif->phy_ctxt->id < MAX_PHYS)
				power_iterator->monitor_active = true;
		break;

	case NL80211_IFTYPE_P2P_CLIENT:
		/* only a single MAC of the same type */
		WARN_ON(power_iterator->p2p_vif);
		power_iterator->p2p_vif = vif;
		power_iterator->p2p_tdls =
			!!iwl_mvm_tdls_sta_count(power_iterator->mvm, vif);
		if (mvmvif->phy_ctxt)
			if (mvmvif->phy_ctxt->id < MAX_PHYS)
				power_iterator->p2p_active = true;
		break;

	case NL80211_IFTYPE_STATION:
		/* only a single MAC of the same type */
		WARN_ON(power_iterator->bss_vif);
		power_iterator->bss_vif = vif;
		power_iterator->bss_tdls =
			!!iwl_mvm_tdls_sta_count(power_iterator->mvm, vif);
		if (mvmvif->phy_ctxt)
			if (mvmvif->phy_ctxt->id < MAX_PHYS)
				power_iterator->bss_active = true;

		if (mvmvif->bf_data.bf_enabled &&
		    !WARN_ON(power_iterator->bf_vif))
			power_iterator->bf_vif = vif;

		break;

	default:
		break;
	}
}

static void
iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
				    struct iwl_power_vifs *vifs)
{
	struct iwl_mvm_vif *bss_mvmvif = NULL;
	struct iwl_mvm_vif *p2p_mvmvif = NULL;
	struct iwl_mvm_vif *ap_mvmvif = NULL;
	bool client_same_channel = false;
	bool ap_same_channel = false;

	lockdep_assert_held(&mvm->mutex);

	/* get vifs info + set pm_enable to false */
	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
					    IEEE80211_IFACE_ITER_NORMAL,
					    iwl_mvm_power_iterator, vifs);

	if (vifs->bss_vif)
		bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);

	if (vifs->p2p_vif)
		p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);

	if (vifs->ap_vif)
		ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);

	/* enable PM on bss if bss stand alone */
	if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active &&
	    !vifs->bss_tdls) {
		bss_mvmvif->pm_enabled = true;
		return;
	}

	/* enable PM on p2p if p2p stand alone */
	if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active &&
	    !vifs->p2p_tdls) {
		if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
			p2p_mvmvif->pm_enabled = true;
		return;
	}

	if (vifs->bss_active && vifs->p2p_active)
		client_same_channel = (bss_mvmvif->phy_ctxt->id ==
				       p2p_mvmvif->phy_ctxt->id);
	if (vifs->bss_active && vifs->ap_active)
		ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
				   ap_mvmvif->phy_ctxt->id);

	/* clients are not stand alone: enable PM if DCM */
	if (!(client_same_channel || ap_same_channel) &&
	    (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM)) {
		if (vifs->bss_active)
			bss_mvmvif->pm_enabled = true;
		if (vifs->p2p_active &&
		    (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM))
			p2p_mvmvif->pm_enabled = true;
		return;
	}

	/*
	 * There is only one channel in the system and there are only
	 * bss and p2p clients that share it
	 */
	if (client_same_channel && !vifs->ap_active &&
	    (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_SCM)) {
		/* share same channel*/
		bss_mvmvif->pm_enabled = true;
		if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
			p2p_mvmvif->pm_enabled = true;
	}
}

#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
				 struct ieee80211_vif *vif, char *buf,
				 int bufsz)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_power_cmd cmd = {};
	int pos = 0;

	mutex_lock(&mvm->mutex);
	memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
	mutex_unlock(&mvm->mutex);

	pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
			 iwlmvm_mod_params.power_scheme);
	pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
			 le16_to_cpu(cmd.flags));
	pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
			 le16_to_cpu(cmd.keep_alive_seconds));

	if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
		return pos;

	pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
			 (cmd.flags &
			 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
	pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
			 cmd.skip_dtim_periods);
	if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
		pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
				 le32_to_cpu(cmd.rx_data_timeout));
		pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
				 le32_to_cpu(cmd.tx_data_timeout));
	}
	if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
		pos += scnprintf(buf+pos, bufsz-pos,
				 "lprx_rssi_threshold = %d\n",
				 cmd.lprx_rssi_threshold);

	if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
		return pos;

	pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
			 le32_to_cpu(cmd.rx_data_timeout_uapsd));
	pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
			 le32_to_cpu(cmd.tx_data_timeout_uapsd));
	pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
	pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
			 cmd.uapsd_ac_flags);
	pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
			 cmd.uapsd_max_sp);
	pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
			 cmd.heavy_tx_thld_packets);
	pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
			 cmd.heavy_rx_thld_packets);
	pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
			 cmd.heavy_tx_thld_percentage);
	pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
			 cmd.heavy_rx_thld_percentage);
	pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
			 (cmd.flags &
			  cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
			 1 : 0);

	if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
		return pos;

	pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
			 cmd.snooze_interval);
	pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
			 cmd.snooze_window);

	return pos;
}

void
iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
					 struct iwl_beacon_filter_cmd *cmd)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;

	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
		cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
		cmd->bf_roaming_energy_delta =
				cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
		cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
		cmd->bf_temp_threshold =
				cpu_to_le32(dbgfs_bf->bf_temp_threshold);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
		cmd->bf_temp_fast_filter =
				cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
		cmd->bf_temp_slow_filter =
				cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
		cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
		cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
		cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
	if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
		cmd->ba_enable_beacon_abort =
				cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
}
#endif

static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
					 struct ieee80211_vif *vif,
					 struct iwl_beacon_filter_cmd *cmd,
					 u32 cmd_flags,
					 bool d0i3)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

	if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
	    vif->type != NL80211_IFTYPE_STATION || vif->p2p)
		return 0;

	iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
	if (!d0i3)
		iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
	ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);

	/* don't change bf_enabled in case of temporary d0i3 configuration */
	if (!ret && !d0i3)
		mvmvif->bf_data.bf_enabled = true;

	return ret;
}

int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
				 struct ieee80211_vif *vif,
				 u32 flags)
{
	struct iwl_beacon_filter_cmd cmd = {
		IWL_BF_CMD_CONFIG_DEFAULTS,
		.bf_enable_beacon_filter = cpu_to_le32(1),
	};

	return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags, false);
}

static int iwl_mvm_update_beacon_abort(struct iwl_mvm *mvm,
				       struct ieee80211_vif *vif,
				       bool enable)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_beacon_filter_cmd cmd = {
		IWL_BF_CMD_CONFIG_DEFAULTS,
		.bf_enable_beacon_filter = cpu_to_le32(1),
	};

	if (!mvmvif->bf_data.bf_enabled)
		return 0;

	if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
		cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);

	mvmvif->bf_data.ba_enabled = enable;
	return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0, false);
}

int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
				  struct ieee80211_vif *vif,
				  u32 flags)
{
	struct iwl_beacon_filter_cmd cmd = {};
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	int ret;

	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
		return 0;

	ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);

	if (!ret)
		mvmvif->bf_data.bf_enabled = false;

	return ret;
}

int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
{
	struct iwl_mvm_vif *mvmvif;
	struct iwl_power_vifs vifs = {
		.mvm = mvm,
	};
	bool ba_enable;
	int ret;

	lockdep_assert_held(&mvm->mutex);

	iwl_mvm_power_set_pm(mvm, &vifs);

	/* disable PS if CAM */
	if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) {
		mvm->ps_disabled = true;
	} else {
	/* don't update device power state unless we add / remove monitor */
		if (vifs.monitor_vif) {
			if (vifs.monitor_active)
				mvm->ps_disabled = true;
			ret = iwl_mvm_power_update_device(mvm);
			if (ret)
				return ret;
		}
	}

	if (vifs.bss_vif) {
		ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
		if (ret)
			return ret;
	}

	if (vifs.p2p_vif) {
		ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
		if (ret)
			return ret;
	}

	if (!vifs.bf_vif)
		return 0;

	mvmvif = iwl_mvm_vif_from_mac80211(vifs.bf_vif);

	ba_enable = !(!mvmvif->pm_enabled || mvm->ps_disabled ||
		      !vifs.bf_vif->bss_conf.ps ||
		      iwl_mvm_vif_low_latency(mvmvif));

	return iwl_mvm_update_beacon_abort(mvm, vifs.bf_vif, ba_enable);
}

int iwl_mvm_update_d0i3_power_mode(struct iwl_mvm *mvm,
				   struct ieee80211_vif *vif,
				   bool enable, u32 flags)
{
	int ret;
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	struct iwl_mac_power_cmd cmd = {};

	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
		return 0;

	if (!vif->bss_conf.assoc)
		return 0;

	iwl_mvm_power_build_cmd(mvm, vif, &cmd);
	if (enable) {
		/* configure skip over dtim up to 300 msec */
		int dtimper = mvm->hw->conf.ps_dtim_period ?: 1;
		int dtimper_msec = dtimper * vif->bss_conf.beacon_int;

		if (WARN_ON(!dtimper_msec))
			return 0;

		cmd.skip_dtim_periods = 300 / dtimper_msec;
		if (cmd.skip_dtim_periods)
			cmd.flags |=
				cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
	}
	iwl_mvm_power_log(mvm, &cmd);
#ifdef CONFIG_IWLWIFI_DEBUGFS
	memcpy(&mvmvif->mac_pwr_cmd, &cmd, sizeof(cmd));
#endif
	ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, flags,
				   sizeof(cmd), &cmd);
	if (ret)
		return ret;

	/* configure beacon filtering */
	if (mvmvif != mvm->bf_allowed_vif)
		return 0;

	if (enable) {
		struct iwl_beacon_filter_cmd cmd_bf = {
			IWL_BF_CMD_CONFIG_D0I3,
			.bf_enable_beacon_filter = cpu_to_le32(1),
		};
		ret = _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd_bf,
						    flags, true);
	} else {
		if (mvmvif->bf_data.bf_enabled)
			ret = iwl_mvm_enable_beacon_filter(mvm, vif, flags);
		else
			ret = iwl_mvm_disable_beacon_filter(mvm, vif, flags);
	}

	return ret;
}
OpenPOWER on IntegriCloud