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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / wireless / intel / iwlwifi / mvm / power.c
blobc146303ec73b17377c72e0f60642b8952ff3e6e7
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
11 * Copyright (C) 2018 - 2019 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH
34 * Copyright (C) 2018 - 2019 Intel Corporation
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
46 * distribution.
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 *****************************************************************************/
64
65 #include <linux/kernel.h>
66 #include <linux/module.h>
67 #include <linux/slab.h>
68 #include <linux/etherdevice.h>
69
70 #include <net/mac80211.h>
71
72 #include "iwl-debug.h"
73 #include "mvm.h"
74 #include "iwl-modparams.h"
75 #include "fw/api/power.h"
76
77 #define POWER_KEEP_ALIVE_PERIOD_SEC 25
78
79 static
80 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
81 struct iwl_beacon_filter_cmd *cmd,
82 u32 flags)
83 {
84 u16 len;
85
86 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
87 le32_to_cpu(cmd->ba_enable_beacon_abort));
88 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
89 le32_to_cpu(cmd->ba_escape_timer));
90 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
91 le32_to_cpu(cmd->bf_debug_flag));
92 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
93 le32_to_cpu(cmd->bf_enable_beacon_filter));
94 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
95 le32_to_cpu(cmd->bf_energy_delta));
96 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
97 le32_to_cpu(cmd->bf_escape_timer));
98 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
99 le32_to_cpu(cmd->bf_roaming_energy_delta));
100 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
101 le32_to_cpu(cmd->bf_roaming_state));
102 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
103 le32_to_cpu(cmd->bf_temp_threshold));
104 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
105 le32_to_cpu(cmd->bf_temp_fast_filter));
106 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
107 le32_to_cpu(cmd->bf_temp_slow_filter));
108 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n",
109 le32_to_cpu(cmd->bf_threshold_absolute_low[0]),
110 le32_to_cpu(cmd->bf_threshold_absolute_low[1]));
111
112 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n",
113 le32_to_cpu(cmd->bf_threshold_absolute_high[0]),
114 le32_to_cpu(cmd->bf_threshold_absolute_high[1]));
115
116 if (fw_has_api(&mvm->fw->ucode_capa,
117 IWL_UCODE_TLV_API_BEACON_FILTER_V4))
118 len = sizeof(struct iwl_beacon_filter_cmd);
119 else
120 len = offsetof(struct iwl_beacon_filter_cmd,
121 bf_threshold_absolute_low);
122
123 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
124 len, cmd);
125 }
126
127 static
128 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
129 struct ieee80211_vif *vif,
130 struct iwl_beacon_filter_cmd *cmd)
131 {
132 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
133
134 if (vif->bss_conf.cqm_rssi_thold) {
135 cmd->bf_energy_delta =
136 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
137 /* fw uses an absolute value for this */
138 cmd->bf_roaming_state =
139 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
140 }
141 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
142 }
143
144 static void iwl_mvm_power_log(struct iwl_mvm *mvm,
145 struct iwl_mac_power_cmd *cmd)
146 {
147 IWL_DEBUG_POWER(mvm,
148 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
149 cmd->id_and_color, iwlmvm_mod_params.power_scheme,
150 le16_to_cpu(cmd->flags));
151 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
152 le16_to_cpu(cmd->keep_alive_seconds));
153
154 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
155 IWL_DEBUG_POWER(mvm, "Disable power management\n");
156 return;
157 }
158
159 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
160 le32_to_cpu(cmd->rx_data_timeout));
161 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
162 le32_to_cpu(cmd->tx_data_timeout));
163 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
164 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
165 cmd->skip_dtim_periods);
166 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
167 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
168 cmd->lprx_rssi_threshold);
169 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
170 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
171 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
172 le32_to_cpu(cmd->rx_data_timeout_uapsd));
173 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
174 le32_to_cpu(cmd->tx_data_timeout_uapsd));
175 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
176 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
177 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
178 }
179 }
180
181 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
182 struct ieee80211_vif *vif,
183 struct iwl_mac_power_cmd *cmd)
184 {
185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
186 enum ieee80211_ac_numbers ac;
187 bool tid_found = false;
188
189 #ifdef CONFIG_IWLWIFI_DEBUGFS
190 /* set advanced pm flag with no uapsd ACs to enable ps-poll */
191 if (mvmvif->dbgfs_pm.use_ps_poll) {
192 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
193 return;
194 }
195 #endif
196
197 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
198 if (!mvmvif->queue_params[ac].uapsd)
199 continue;
200
201 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
202 cmd->flags |=
203 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
204
205 cmd->uapsd_ac_flags |= BIT(ac);
206
207 /* QNDP TID - the highest TID with no admission control */
208 if (!tid_found && !mvmvif->queue_params[ac].acm) {
209 tid_found = true;
210 switch (ac) {
211 case IEEE80211_AC_VO:
212 cmd->qndp_tid = 6;
213 break;
214 case IEEE80211_AC_VI:
215 cmd->qndp_tid = 5;
216 break;
217 case IEEE80211_AC_BE:
218 cmd->qndp_tid = 0;
219 break;
220 case IEEE80211_AC_BK:
221 cmd->qndp_tid = 1;
222 break;
223 }
224 }
225 }
226
227 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
228
229 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
230 BIT(IEEE80211_AC_VI) |
231 BIT(IEEE80211_AC_BE) |
232 BIT(IEEE80211_AC_BK))) {
233 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
234 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
235 cmd->snooze_window =
236 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
237 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
238 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
239 }
240
241 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len;
242
243 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ||
244 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
245 cmd->rx_data_timeout_uapsd =
246 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
247 cmd->tx_data_timeout_uapsd =
248 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
249 } else {
250 cmd->rx_data_timeout_uapsd =
251 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
252 cmd->tx_data_timeout_uapsd =
253 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
254 }
255
256 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
257 cmd->heavy_tx_thld_packets =
258 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
259 cmd->heavy_rx_thld_packets =
260 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
261 } else {
262 cmd->heavy_tx_thld_packets =
263 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
264 cmd->heavy_rx_thld_packets =
265 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
266 }
267 cmd->heavy_tx_thld_percentage =
268 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
269 cmd->heavy_rx_thld_percentage =
270 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
271 }
272
273 static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac,
274 struct ieee80211_vif *vif)
275 {
276 bool *is_p2p_standalone = _data;
277
278 switch (ieee80211_vif_type_p2p(vif)) {
279 case NL80211_IFTYPE_P2P_GO:
280 case NL80211_IFTYPE_AP:
281 *is_p2p_standalone = false;
282 break;
283 case NL80211_IFTYPE_STATION:
284 if (vif->bss_conf.assoc)
285 *is_p2p_standalone = false;
286 break;
287
288 default:
289 break;
290 }
291 }
292
293 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
294 struct ieee80211_vif *vif)
295 {
296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
297
298 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
299 ETH_ALEN))
300 return false;
301
302 /*
303 * Avoid using uAPSD if P2P client is associated to GO that uses
304 * opportunistic power save. This is due to current FW limitation.
305 */
306 if (vif->p2p &&
307 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
308 IEEE80211_P2P_OPPPS_ENABLE_BIT))
309 return false;
310
311 /*
312 * Avoid using uAPSD if client is in DCM -
313 * low latency issue in Miracast
314 */
315 if (iwl_mvm_phy_ctx_count(mvm) >= 2)
316 return false;
317
318 if (vif->p2p) {
319 /* Allow U-APSD only if p2p is stand alone */
320 bool is_p2p_standalone = true;
321
322 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm))
323 return false;
324
325 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
326 IEEE80211_IFACE_ITER_NORMAL,
327 iwl_mvm_p2p_standalone_iterator,
328 &is_p2p_standalone);
329
330 if (!is_p2p_standalone)
331 return false;
332 }
333
334 return true;
335 }
336
337 static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif)
338 {
339 struct ieee80211_chanctx_conf *chanctx_conf;
340 struct ieee80211_channel *chan;
341 bool radar_detect = false;
342
343 rcu_read_lock();
344 chanctx_conf = rcu_dereference(vif->chanctx_conf);
345 WARN_ON(!chanctx_conf);
346 if (chanctx_conf) {
347 chan = chanctx_conf->def.chan;
348 radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
349 }
350 rcu_read_unlock();
351
352 return radar_detect;
353 }
354
355 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm,
356 struct ieee80211_vif *vif,
357 struct iwl_mac_power_cmd *cmd)
358 {
359 int dtimper = vif->bss_conf.dtim_period ?: 1;
360 int skip;
361
362 /* disable, in case we're supposed to override */
363 cmd->skip_dtim_periods = 0;
364 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
365
366 if (iwl_mvm_power_is_radar(vif))
367 return;
368
369 if (dtimper >= 10)
370 return;
371
372 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
373 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP)
374 return;
375 skip = 2;
376 } else {
377 int dtimper_tu = dtimper * vif->bss_conf.beacon_int;
378
379 if (WARN_ON(!dtimper_tu))
380 return;
381 /* configure skip over dtim up to 306TU - 314 msec */
382 skip = max_t(u8, 1, 306 / dtimper_tu);
383 }
384
385 /* the firmware really expects "look at every X DTIMs", so add 1 */
386 cmd->skip_dtim_periods = 1 + skip;
387 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
388 }
389
390 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
391 struct ieee80211_vif *vif,
392 struct iwl_mac_power_cmd *cmd)
393 {
394 int dtimper, bi;
395 int keep_alive;
396 struct iwl_mvm_vif *mvmvif __maybe_unused =
397 iwl_mvm_vif_from_mac80211(vif);
398
399 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
400 mvmvif->color));
401 dtimper = vif->bss_conf.dtim_period;
402 bi = vif->bss_conf.beacon_int;
403
404 /*
405 * Regardless of power management state the driver must set
406 * keep alive period. FW will use it for sending keep alive NDPs
407 * immediately after association. Check that keep alive period
408 * is at least 3 * DTIM
409 */
410 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi),
411 USEC_PER_SEC);
412 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC);
413 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
414
415 if (mvm->ps_disabled)
416 return;
417
418 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
419
420 if (!vif->bss_conf.ps || !mvmvif->pm_enabled)
421 return;
422
423 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
424 (!fw_has_capa(&mvm->fw->ucode_capa,
425 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) ||
426 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE))
427 return;
428
429 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
430
431 if (vif->bss_conf.beacon_rate &&
432 (vif->bss_conf.beacon_rate->bitrate == 10 ||
433 vif->bss_conf.beacon_rate->bitrate == 60)) {
434 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
435 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
436 }
437
438 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd);
439
440 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
441 cmd->rx_data_timeout =
442 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
443 cmd->tx_data_timeout =
444 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
445 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
446 fw_has_capa(&mvm->fw->ucode_capa,
447 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) {
448 cmd->tx_data_timeout =
449 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT);
450 cmd->rx_data_timeout =
451 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT);
452 } else {
453 cmd->rx_data_timeout =
454 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
455 cmd->tx_data_timeout =
456 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
457 }
458
459 if (iwl_mvm_power_allow_uapsd(mvm, vif))
460 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
461
462 #ifdef CONFIG_IWLWIFI_DEBUGFS
463 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
464 cmd->keep_alive_seconds =
465 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
466 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
467 if (mvmvif->dbgfs_pm.skip_over_dtim)
468 cmd->flags |=
469 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
470 else
471 cmd->flags &=
472 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
473 }
474 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
475 cmd->rx_data_timeout =
476 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
477 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
478 cmd->tx_data_timeout =
479 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
480 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
481 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
482 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
483 if (mvmvif->dbgfs_pm.lprx_ena)
484 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
485 else
486 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
487 }
488 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
489 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
490 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
491 if (mvmvif->dbgfs_pm.snooze_ena)
492 cmd->flags |=
493 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
494 else
495 cmd->flags &=
496 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
497 }
498 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
499 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
500 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
501 cmd->flags |= cpu_to_le16(flag);
502 else
503 cmd->flags &= cpu_to_le16(flag);
504 }
505 #endif /* CONFIG_IWLWIFI_DEBUGFS */
506 }
507
508 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
509 struct ieee80211_vif *vif)
510 {
511 struct iwl_mac_power_cmd cmd = {};
512
513 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
514 iwl_mvm_power_log(mvm, &cmd);
515 #ifdef CONFIG_IWLWIFI_DEBUGFS
516 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
517 #endif
518
519 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
520 sizeof(cmd), &cmd);
521 }
522
523 int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
524 {
525 struct iwl_device_power_cmd cmd = {
526 .flags = 0,
527 };
528
529 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
530 mvm->ps_disabled = true;
531
532 if (!mvm->ps_disabled)
533 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
534
535 #ifdef CONFIG_IWLWIFI_DEBUGFS
536 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
537 mvm->disable_power_off_d3 : mvm->disable_power_off)
538 cmd.flags &=
539 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
540 #endif
541 if (mvm->ext_clock_valid)
542 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK);
543
544 IWL_DEBUG_POWER(mvm,
545 "Sending device power command with flags = 0x%X\n",
546 cmd.flags);
547
548 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
549 &cmd);
550 }
551
552 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
553 {
554 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
555
556 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
557 ETH_ALEN))
558 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid);
559 }
560
561 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
562 struct ieee80211_vif *vif)
563 {
564 u8 *ap_sta_id = _data;
565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
566
567 /* The ap_sta_id is not expected to change during current association
568 * so no explicit protection is needed
569 */
570 if (mvmvif->ap_sta_id == *ap_sta_id)
571 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
572 ETH_ALEN);
573 }
574
575 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
576 struct iwl_rx_cmd_buffer *rxb)
577 {
578 struct iwl_rx_packet *pkt = rxb_addr(rxb);
579 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
580 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
581
582 ieee80211_iterate_active_interfaces_atomic(
583 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
584 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
585 }
586
587 struct iwl_power_vifs {
588 struct iwl_mvm *mvm;
589 struct ieee80211_vif *bss_vif;
590 struct ieee80211_vif *p2p_vif;
591 struct ieee80211_vif *ap_vif;
592 struct ieee80211_vif *monitor_vif;
593 bool p2p_active;
594 bool bss_active;
595 bool ap_active;
596 bool monitor_active;
597 };
598
599 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac,
600 struct ieee80211_vif *vif)
601 {
602 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
603
604 mvmvif->pm_enabled = false;
605 }
606
607 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac,
608 struct ieee80211_vif *vif)
609 {
610 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
611 bool *disable_ps = _data;
612
613 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX)
614 *disable_ps |= mvmvif->ps_disabled;
615 }
616
617 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac,
618 struct ieee80211_vif *vif)
619 {
620 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
621 struct iwl_power_vifs *power_iterator = _data;
622 bool active = mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX;
623
624 switch (ieee80211_vif_type_p2p(vif)) {
625 case NL80211_IFTYPE_P2P_DEVICE:
626 break;
627
628 case NL80211_IFTYPE_P2P_GO:
629 case NL80211_IFTYPE_AP:
630 /* only a single MAC of the same type */
631 WARN_ON(power_iterator->ap_vif);
632 power_iterator->ap_vif = vif;
633 if (active)
634 power_iterator->ap_active = true;
635 break;
636
637 case NL80211_IFTYPE_MONITOR:
638 /* only a single MAC of the same type */
639 WARN_ON(power_iterator->monitor_vif);
640 power_iterator->monitor_vif = vif;
641 if (active)
642 power_iterator->monitor_active = true;
643 break;
644
645 case NL80211_IFTYPE_P2P_CLIENT:
646 /* only a single MAC of the same type */
647 WARN_ON(power_iterator->p2p_vif);
648 power_iterator->p2p_vif = vif;
649 if (active)
650 power_iterator->p2p_active = true;
651 break;
652
653 case NL80211_IFTYPE_STATION:
654 power_iterator->bss_vif = vif;
655 if (active)
656 power_iterator->bss_active = true;
657 break;
658
659 default:
660 break;
661 }
662 }
663
664 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
665 struct iwl_power_vifs *vifs)
666 {
667 struct iwl_mvm_vif *bss_mvmvif = NULL;
668 struct iwl_mvm_vif *p2p_mvmvif = NULL;
669 struct iwl_mvm_vif *ap_mvmvif = NULL;
670 bool client_same_channel = false;
671 bool ap_same_channel = false;
672
673 lockdep_assert_held(&mvm->mutex);
674
675 /* set pm_enable to false */
676 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
677 IEEE80211_IFACE_ITER_NORMAL,
678 iwl_mvm_power_disable_pm_iterator,
679 NULL);
680
681 if (vifs->bss_vif)
682 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
683
684 if (vifs->p2p_vif)
685 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
686
687 if (vifs->ap_vif)
688 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
689
690 /* don't allow PM if any TDLS stations exist */
691 if (iwl_mvm_tdls_sta_count(mvm, NULL))
692 return;
693
694 /* enable PM on bss if bss stand alone */
695 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) {
696 bss_mvmvif->pm_enabled = true;
697 return;
698 }
699
700 /* enable PM on p2p if p2p stand alone */
701 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) {
702 p2p_mvmvif->pm_enabled = true;
703 return;
704 }
705
706 if (vifs->bss_active && vifs->p2p_active)
707 client_same_channel = (bss_mvmvif->phy_ctxt->id ==
708 p2p_mvmvif->phy_ctxt->id);
709 if (vifs->bss_active && vifs->ap_active)
710 ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
711 ap_mvmvif->phy_ctxt->id);
712
713 /* clients are not stand alone: enable PM if DCM */
714 if (!(client_same_channel || ap_same_channel)) {
715 if (vifs->bss_active)
716 bss_mvmvif->pm_enabled = true;
717 if (vifs->p2p_active)
718 p2p_mvmvif->pm_enabled = true;
719 return;
720 }
721
722 /*
723 * There is only one channel in the system and there are only
724 * bss and p2p clients that share it
725 */
726 if (client_same_channel && !vifs->ap_active) {
727 /* share same channel*/
728 bss_mvmvif->pm_enabled = true;
729 p2p_mvmvif->pm_enabled = true;
730 }
731 }
732
733 #ifdef CONFIG_IWLWIFI_DEBUGFS
734 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
735 struct ieee80211_vif *vif, char *buf,
736 int bufsz)
737 {
738 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
739 struct iwl_mac_power_cmd cmd = {};
740 int pos = 0;
741
742 mutex_lock(&mvm->mutex);
743 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
744 mutex_unlock(&mvm->mutex);
745
746 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
747 iwlmvm_mod_params.power_scheme);
748 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
749 le16_to_cpu(cmd.flags));
750 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
751 le16_to_cpu(cmd.keep_alive_seconds));
752
753 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
754 return pos;
755
756 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
757 (cmd.flags &
758 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
759 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
760 cmd.skip_dtim_periods);
761 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
762 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
763 le32_to_cpu(cmd.rx_data_timeout));
764 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
765 le32_to_cpu(cmd.tx_data_timeout));
766 }
767 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
768 pos += scnprintf(buf+pos, bufsz-pos,
769 "lprx_rssi_threshold = %d\n",
770 cmd.lprx_rssi_threshold);
771
772 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
773 return pos;
774
775 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
776 le32_to_cpu(cmd.rx_data_timeout_uapsd));
777 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
778 le32_to_cpu(cmd.tx_data_timeout_uapsd));
779 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
780 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
781 cmd.uapsd_ac_flags);
782 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
783 cmd.uapsd_max_sp);
784 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
785 cmd.heavy_tx_thld_packets);
786 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
787 cmd.heavy_rx_thld_packets);
788 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
789 cmd.heavy_tx_thld_percentage);
790 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
791 cmd.heavy_rx_thld_percentage);
792 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
793 (cmd.flags &
794 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
795 1 : 0);
796
797 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
798 return pos;
799
800 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
801 cmd.snooze_interval);
802 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
803 cmd.snooze_window);
804
805 return pos;
806 }
807
808 void
809 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
810 struct iwl_beacon_filter_cmd *cmd)
811 {
812 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
813 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
814
815 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
816 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
817 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
818 cmd->bf_roaming_energy_delta =
819 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
820 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
821 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
822 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
823 cmd->bf_temp_threshold =
824 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
825 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
826 cmd->bf_temp_fast_filter =
827 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
828 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
829 cmd->bf_temp_slow_filter =
830 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
831 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
832 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
833 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
834 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
835 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
836 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
837 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
838 cmd->ba_enable_beacon_abort =
839 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
840 }
841 #endif
842
843 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
844 struct ieee80211_vif *vif,
845 struct iwl_beacon_filter_cmd *cmd,
846 u32 cmd_flags)
847 {
848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
849 int ret;
850
851 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
852 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
853 return 0;
854
855 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
856 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
857 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
858
859 if (!ret)
860 mvmvif->bf_data.bf_enabled = true;
861
862 return ret;
863 }
864
865 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
866 struct ieee80211_vif *vif,
867 u32 flags)
868 {
869 struct iwl_beacon_filter_cmd cmd = {
870 IWL_BF_CMD_CONFIG_DEFAULTS,
871 .bf_enable_beacon_filter = cpu_to_le32(1),
872 };
873
874 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags);
875 }
876
877 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
878 struct ieee80211_vif *vif,
879 u32 flags)
880 {
881 struct iwl_beacon_filter_cmd cmd = {};
882 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
883 int ret;
884
885 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
886 return 0;
887
888 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
889
890 if (!ret)
891 mvmvif->bf_data.bf_enabled = false;
892
893 return ret;
894 }
895
896 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
897 struct ieee80211_vif *vif,
898 u32 flags)
899 {
900 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags);
901 }
902
903 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm)
904 {
905 bool disable_ps;
906 int ret;
907
908 /* disable PS if CAM */
909 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM);
910 /* ...or if any of the vifs require PS to be off */
911 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
912 IEEE80211_IFACE_ITER_NORMAL,
913 iwl_mvm_power_ps_disabled_iterator,
914 &disable_ps);
915
916 /* update device power state if it has changed */
917 if (mvm->ps_disabled != disable_ps) {
918 bool old_ps_disabled = mvm->ps_disabled;
919
920 mvm->ps_disabled = disable_ps;
921 ret = iwl_mvm_power_update_device(mvm);
922 if (ret) {
923 mvm->ps_disabled = old_ps_disabled;
924 return ret;
925 }
926 }
927
928 return 0;
929 }
930
931 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm,
932 struct ieee80211_vif *vif)
933 {
934 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935 struct iwl_beacon_filter_cmd cmd = {
936 IWL_BF_CMD_CONFIG_DEFAULTS,
937 .bf_enable_beacon_filter = cpu_to_le32(1),
938 };
939
940 if (!mvmvif->bf_data.bf_enabled)
941 return 0;
942
943 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
944 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
945
946 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled ||
947 mvm->ps_disabled ||
948 !vif->bss_conf.ps ||
949 iwl_mvm_vif_low_latency(mvmvif));
950
951 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0);
952 }
953
954 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm)
955 {
956 struct iwl_power_vifs vifs = {
957 .mvm = mvm,
958 };
959 int ret;
960
961 lockdep_assert_held(&mvm->mutex);
962
963 /* get vifs info */
964 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
965 IEEE80211_IFACE_ITER_NORMAL,
966 iwl_mvm_power_get_vifs_iterator, &vifs);
967
968 ret = iwl_mvm_power_set_ps(mvm);
969 if (ret)
970 return ret;
971
972 if (vifs.bss_vif)
973 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
974
975 return 0;
976 }
977
978 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
979 {
980 struct iwl_power_vifs vifs = {
981 .mvm = mvm,
982 };
983 int ret;
984
985 lockdep_assert_held(&mvm->mutex);
986
987 /* get vifs info */
988 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
989 IEEE80211_IFACE_ITER_NORMAL,
990 iwl_mvm_power_get_vifs_iterator, &vifs);
991
992 iwl_mvm_power_set_pm(mvm, &vifs);
993
994 ret = iwl_mvm_power_set_ps(mvm);
995 if (ret)
996 return ret;
997
998 if (vifs.bss_vif) {
999 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
1000 if (ret)
1001 return ret;
1002 }
1003
1004 if (vifs.p2p_vif) {
1005 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
1006 if (ret)
1007 return ret;
1008 }
1009
1010 if (vifs.bss_vif)
1011 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
1012
1013 return 0;
1014 }
Linux with added FPC-III support