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iwlwifi: mvm: Reflect GO channel switch in NoA
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / power.c
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 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63
64 #include <linux/kernel.h>
65 #include <linux/module.h>
66 #include <linux/slab.h>
67
68 #include <net/mac80211.h>
69
70 #include "iwl-debug.h"
71 #include "mvm.h"
72 #include "iwl-modparams.h"
73 #include "fw-api-power.h"
74
75 #define POWER_KEEP_ALIVE_PERIOD_SEC 25
76
77 static
78 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
79 struct iwl_beacon_filter_cmd *cmd,
80 u32 flags)
81 {
82 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
83 le32_to_cpu(cmd->ba_enable_beacon_abort));
84 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
85 le32_to_cpu(cmd->ba_escape_timer));
86 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
87 le32_to_cpu(cmd->bf_debug_flag));
88 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
89 le32_to_cpu(cmd->bf_enable_beacon_filter));
90 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
91 le32_to_cpu(cmd->bf_energy_delta));
92 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
93 le32_to_cpu(cmd->bf_escape_timer));
94 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
95 le32_to_cpu(cmd->bf_roaming_energy_delta));
96 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
97 le32_to_cpu(cmd->bf_roaming_state));
98 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
99 le32_to_cpu(cmd->bf_temp_threshold));
100 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
101 le32_to_cpu(cmd->bf_temp_fast_filter));
102 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
103 le32_to_cpu(cmd->bf_temp_slow_filter));
104
105 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
106 sizeof(struct iwl_beacon_filter_cmd), cmd);
107 }
108
109 static
110 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
111 struct ieee80211_vif *vif,
112 struct iwl_beacon_filter_cmd *cmd)
113 {
114 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
115
116 if (vif->bss_conf.cqm_rssi_thold) {
117 cmd->bf_energy_delta =
118 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
119 /* fw uses an absolute value for this */
120 cmd->bf_roaming_state =
121 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
122 }
123 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
124 }
125
126 static void iwl_mvm_power_log(struct iwl_mvm *mvm,
127 struct iwl_mac_power_cmd *cmd)
128 {
129 IWL_DEBUG_POWER(mvm,
130 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
131 cmd->id_and_color, iwlmvm_mod_params.power_scheme,
132 le16_to_cpu(cmd->flags));
133 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
134 le16_to_cpu(cmd->keep_alive_seconds));
135
136 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
137 IWL_DEBUG_POWER(mvm, "Disable power management\n");
138 return;
139 }
140
141 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
142 le32_to_cpu(cmd->rx_data_timeout));
143 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
144 le32_to_cpu(cmd->tx_data_timeout));
145 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
146 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
147 cmd->skip_dtim_periods);
148 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
149 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
150 cmd->lprx_rssi_threshold);
151 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
152 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
153 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
154 le32_to_cpu(cmd->rx_data_timeout_uapsd));
155 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
156 le32_to_cpu(cmd->tx_data_timeout_uapsd));
157 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
158 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
159 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
160 }
161 }
162
163 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
164 struct ieee80211_vif *vif,
165 struct iwl_mac_power_cmd *cmd)
166 {
167 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
168 enum ieee80211_ac_numbers ac;
169 bool tid_found = false;
170
171 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
172 if (!mvmvif->queue_params[ac].uapsd)
173 continue;
174
175 if (mvm->cur_ucode != IWL_UCODE_WOWLAN)
176 cmd->flags |=
177 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
178
179 cmd->uapsd_ac_flags |= BIT(ac);
180
181 /* QNDP TID - the highest TID with no admission control */
182 if (!tid_found && !mvmvif->queue_params[ac].acm) {
183 tid_found = true;
184 switch (ac) {
185 case IEEE80211_AC_VO:
186 cmd->qndp_tid = 6;
187 break;
188 case IEEE80211_AC_VI:
189 cmd->qndp_tid = 5;
190 break;
191 case IEEE80211_AC_BE:
192 cmd->qndp_tid = 0;
193 break;
194 case IEEE80211_AC_BK:
195 cmd->qndp_tid = 1;
196 break;
197 }
198 }
199 }
200
201 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
202 return;
203
204 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
205
206 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
207 BIT(IEEE80211_AC_VI) |
208 BIT(IEEE80211_AC_BE) |
209 BIT(IEEE80211_AC_BK))) {
210 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
211 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
212 cmd->snooze_window = (mvm->cur_ucode == IWL_UCODE_WOWLAN) ?
213 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
214 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
215 }
216
217 cmd->uapsd_max_sp = IWL_UAPSD_MAX_SP;
218
219 if (mvm->cur_ucode == IWL_UCODE_WOWLAN || cmd->flags &
220 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
221 cmd->rx_data_timeout_uapsd =
222 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
223 cmd->tx_data_timeout_uapsd =
224 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
225 } else {
226 cmd->rx_data_timeout_uapsd =
227 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
228 cmd->tx_data_timeout_uapsd =
229 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
230 }
231
232 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
233 cmd->heavy_tx_thld_packets =
234 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
235 cmd->heavy_rx_thld_packets =
236 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
237 } else {
238 cmd->heavy_tx_thld_packets =
239 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
240 cmd->heavy_rx_thld_packets =
241 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
242 }
243 cmd->heavy_tx_thld_percentage =
244 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
245 cmd->heavy_rx_thld_percentage =
246 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
247 }
248
249 static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
250 struct ieee80211_vif *vif)
251 {
252 unsigned long *data = _data;
253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
254
255 if (!mvmvif->phy_ctxt)
256 return;
257
258 if (vif->type == NL80211_IFTYPE_STATION ||
259 vif->type == NL80211_IFTYPE_AP)
260 __set_bit(mvmvif->phy_ctxt->id, data);
261 }
262
263 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
264 struct ieee80211_vif *vif)
265 {
266 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
267 unsigned long phy_ctxt_counter = 0;
268
269 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
270 IEEE80211_IFACE_ITER_NORMAL,
271 iwl_mvm_binding_iterator,
272 &phy_ctxt_counter);
273
274 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
275 ETH_ALEN))
276 return false;
277
278 if (vif->p2p &&
279 !(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS_UAPSD))
280 return false;
281 /*
282 * Avoid using uAPSD if P2P client is associated to GO that uses
283 * opportunistic power save. This is due to current FW limitation.
284 */
285 if (vif->p2p &&
286 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
287 IEEE80211_P2P_OPPPS_ENABLE_BIT))
288 return false;
289
290 /*
291 * Avoid using uAPSD if client is in DCM -
292 * low latency issue in Miracast
293 */
294 if (hweight8(phy_ctxt_counter) >= 2)
295 return false;
296
297 return true;
298 }
299
300 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
301 struct ieee80211_vif *vif,
302 struct iwl_mac_power_cmd *cmd)
303 {
304 struct ieee80211_hw *hw = mvm->hw;
305 struct ieee80211_chanctx_conf *chanctx_conf;
306 struct ieee80211_channel *chan;
307 int dtimper, dtimper_msec;
308 int keep_alive;
309 bool radar_detect = false;
310 struct iwl_mvm_vif *mvmvif __maybe_unused =
311 iwl_mvm_vif_from_mac80211(vif);
312
313 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
314 mvmvif->color));
315 dtimper = hw->conf.ps_dtim_period ?: 1;
316
317 /*
318 * Regardless of power management state the driver must set
319 * keep alive period. FW will use it for sending keep alive NDPs
320 * immediately after association. Check that keep alive period
321 * is at least 3 * DTIM
322 */
323 dtimper_msec = dtimper * vif->bss_conf.beacon_int;
324 keep_alive = max_t(int, 3 * dtimper_msec,
325 MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC);
326 keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
327 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
328
329 if (mvm->ps_disabled)
330 return;
331
332 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
333
334 if (!vif->bss_conf.ps || iwl_mvm_vif_low_latency(mvmvif) ||
335 !mvmvif->pm_enabled)
336 return;
337
338 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
339
340 if (vif->bss_conf.beacon_rate &&
341 (vif->bss_conf.beacon_rate->bitrate == 10 ||
342 vif->bss_conf.beacon_rate->bitrate == 60)) {
343 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
344 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
345 }
346
347 /* Check if radar detection is required on current channel */
348 rcu_read_lock();
349 chanctx_conf = rcu_dereference(vif->chanctx_conf);
350 WARN_ON(!chanctx_conf);
351 if (chanctx_conf) {
352 chan = chanctx_conf->def.chan;
353 radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
354 }
355 rcu_read_unlock();
356
357 /* Check skip over DTIM conditions */
358 if (!radar_detect && (dtimper <= 10) &&
359 (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP ||
360 mvm->cur_ucode == IWL_UCODE_WOWLAN)) {
361 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
362 cmd->skip_dtim_periods = 3;
363 }
364
365 if (mvm->cur_ucode != IWL_UCODE_WOWLAN) {
366 cmd->rx_data_timeout =
367 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
368 cmd->tx_data_timeout =
369 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
370 } else {
371 cmd->rx_data_timeout =
372 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
373 cmd->tx_data_timeout =
374 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
375 }
376
377 if (iwl_mvm_power_allow_uapsd(mvm, vif))
378 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
379
380 #ifdef CONFIG_IWLWIFI_DEBUGFS
381 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
382 cmd->keep_alive_seconds =
383 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
384 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
385 if (mvmvif->dbgfs_pm.skip_over_dtim)
386 cmd->flags |=
387 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
388 else
389 cmd->flags &=
390 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
391 }
392 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
393 cmd->rx_data_timeout =
394 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
395 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
396 cmd->tx_data_timeout =
397 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
398 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
399 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
400 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
401 if (mvmvif->dbgfs_pm.lprx_ena)
402 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
403 else
404 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
405 }
406 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
407 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
408 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
409 if (mvmvif->dbgfs_pm.snooze_ena)
410 cmd->flags |=
411 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
412 else
413 cmd->flags &=
414 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
415 }
416 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
417 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
418 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
419 cmd->flags |= cpu_to_le16(flag);
420 else
421 cmd->flags &= cpu_to_le16(flag);
422 }
423 #endif /* CONFIG_IWLWIFI_DEBUGFS */
424 }
425
426 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
427 struct ieee80211_vif *vif)
428 {
429 struct iwl_mac_power_cmd cmd = {};
430
431 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
432 iwl_mvm_power_log(mvm, &cmd);
433 #ifdef CONFIG_IWLWIFI_DEBUGFS
434 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
435 #endif
436
437 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
438 sizeof(cmd), &cmd);
439 }
440
441 int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
442 {
443 struct iwl_device_power_cmd cmd = {
444 .flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
445 };
446
447 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
448 mvm->ps_disabled = true;
449
450 if (mvm->ps_disabled)
451 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);
452
453 #ifdef CONFIG_IWLWIFI_DEBUGFS
454 if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
455 mvm->disable_power_off)
456 cmd.flags &=
457 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
458 #endif
459 IWL_DEBUG_POWER(mvm,
460 "Sending device power command with flags = 0x%X\n",
461 cmd.flags);
462
463 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
464 &cmd);
465 }
466
467 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
468 {
469 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
470
471 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
472 ETH_ALEN))
473 memset(mvmvif->uapsd_misbehaving_bssid, 0, ETH_ALEN);
474 }
475
476 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
477 struct ieee80211_vif *vif)
478 {
479 u8 *ap_sta_id = _data;
480 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
481
482 /* The ap_sta_id is not expected to change during current association
483 * so no explicit protection is needed
484 */
485 if (mvmvif->ap_sta_id == *ap_sta_id)
486 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
487 ETH_ALEN);
488 }
489
490 int iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
491 struct iwl_rx_cmd_buffer *rxb,
492 struct iwl_device_cmd *cmd)
493 {
494 struct iwl_rx_packet *pkt = rxb_addr(rxb);
495 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
496 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
497
498 ieee80211_iterate_active_interfaces_atomic(
499 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
500 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
501
502 return 0;
503 }
504
505 struct iwl_power_vifs {
506 struct ieee80211_vif *bf_vif;
507 struct ieee80211_vif *bss_vif;
508 struct ieee80211_vif *p2p_vif;
509 struct ieee80211_vif *ap_vif;
510 struct ieee80211_vif *monitor_vif;
511 bool p2p_active;
512 bool bss_active;
513 bool ap_active;
514 bool monitor_active;
515 };
516
517 static void iwl_mvm_power_iterator(void *_data, u8 *mac,
518 struct ieee80211_vif *vif)
519 {
520 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
521 struct iwl_power_vifs *power_iterator = _data;
522
523 mvmvif->pm_enabled = false;
524 switch (ieee80211_vif_type_p2p(vif)) {
525 case NL80211_IFTYPE_P2P_DEVICE:
526 break;
527
528 case NL80211_IFTYPE_P2P_GO:
529 case NL80211_IFTYPE_AP:
530 /* only a single MAC of the same type */
531 WARN_ON(power_iterator->ap_vif);
532 power_iterator->ap_vif = vif;
533 if (mvmvif->phy_ctxt)
534 if (mvmvif->phy_ctxt->id < MAX_PHYS)
535 power_iterator->ap_active = true;
536 break;
537
538 case NL80211_IFTYPE_MONITOR:
539 /* only a single MAC of the same type */
540 WARN_ON(power_iterator->monitor_vif);
541 power_iterator->monitor_vif = vif;
542 if (mvmvif->phy_ctxt)
543 if (mvmvif->phy_ctxt->id < MAX_PHYS)
544 power_iterator->monitor_active = true;
545 break;
546
547 case NL80211_IFTYPE_P2P_CLIENT:
548 /* only a single MAC of the same type */
549 WARN_ON(power_iterator->p2p_vif);
550 power_iterator->p2p_vif = vif;
551 if (mvmvif->phy_ctxt)
552 if (mvmvif->phy_ctxt->id < MAX_PHYS)
553 power_iterator->p2p_active = true;
554 break;
555
556 case NL80211_IFTYPE_STATION:
557 /* only a single MAC of the same type */
558 WARN_ON(power_iterator->bss_vif);
559 power_iterator->bss_vif = vif;
560 if (mvmvif->phy_ctxt)
561 if (mvmvif->phy_ctxt->id < MAX_PHYS)
562 power_iterator->bss_active = true;
563
564 if (mvmvif->bf_data.bf_enabled &&
565 !WARN_ON(power_iterator->bf_vif))
566 power_iterator->bf_vif = vif;
567
568 break;
569
570 default:
571 break;
572 }
573 }
574
575 static void
576 iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
577 struct iwl_power_vifs *vifs)
578 {
579 struct iwl_mvm_vif *bss_mvmvif = NULL;
580 struct iwl_mvm_vif *p2p_mvmvif = NULL;
581 struct iwl_mvm_vif *ap_mvmvif = NULL;
582 bool client_same_channel = false;
583 bool ap_same_channel = false;
584
585 lockdep_assert_held(&mvm->mutex);
586
587 /* get vifs info + set pm_enable to false */
588 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
589 IEEE80211_IFACE_ITER_NORMAL,
590 iwl_mvm_power_iterator, vifs);
591
592 if (vifs->bss_vif)
593 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
594
595 if (vifs->p2p_vif)
596 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
597
598 if (vifs->ap_vif)
599 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
600
601 /* enable PM on bss if bss stand alone */
602 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) {
603 bss_mvmvif->pm_enabled = true;
604 return;
605 }
606
607 /* enable PM on p2p if p2p stand alone */
608 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) {
609 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
610 p2p_mvmvif->pm_enabled = true;
611 return;
612 }
613
614 if (vifs->bss_active && vifs->p2p_active)
615 client_same_channel = (bss_mvmvif->phy_ctxt->id ==
616 p2p_mvmvif->phy_ctxt->id);
617 if (vifs->bss_active && vifs->ap_active)
618 ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
619 ap_mvmvif->phy_ctxt->id);
620
621 /* clients are not stand alone: enable PM if DCM */
622 if (!(client_same_channel || ap_same_channel) &&
623 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM)) {
624 if (vifs->bss_active)
625 bss_mvmvif->pm_enabled = true;
626 if (vifs->p2p_active &&
627 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM))
628 p2p_mvmvif->pm_enabled = true;
629 return;
630 }
631
632 /*
633 * There is only one channel in the system and there are only
634 * bss and p2p clients that share it
635 */
636 if (client_same_channel && !vifs->ap_active &&
637 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_SCM)) {
638 /* share same channel*/
639 bss_mvmvif->pm_enabled = true;
640 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
641 p2p_mvmvif->pm_enabled = true;
642 }
643 }
644
645 #ifdef CONFIG_IWLWIFI_DEBUGFS
646 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
647 struct ieee80211_vif *vif, char *buf,
648 int bufsz)
649 {
650 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
651 struct iwl_mac_power_cmd cmd = {};
652 int pos = 0;
653
654 mutex_lock(&mvm->mutex);
655 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
656 mutex_unlock(&mvm->mutex);
657
658 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
659 iwlmvm_mod_params.power_scheme);
660 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
661 le16_to_cpu(cmd.flags));
662 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
663 le16_to_cpu(cmd.keep_alive_seconds));
664
665 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
666 return pos;
667
668 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
669 (cmd.flags &
670 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
671 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
672 cmd.skip_dtim_periods);
673 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
674 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
675 le32_to_cpu(cmd.rx_data_timeout));
676 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
677 le32_to_cpu(cmd.tx_data_timeout));
678 }
679 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
680 pos += scnprintf(buf+pos, bufsz-pos,
681 "lprx_rssi_threshold = %d\n",
682 cmd.lprx_rssi_threshold);
683
684 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
685 return pos;
686
687 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
688 le32_to_cpu(cmd.rx_data_timeout_uapsd));
689 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
690 le32_to_cpu(cmd.tx_data_timeout_uapsd));
691 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
692 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
693 cmd.uapsd_ac_flags);
694 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
695 cmd.uapsd_max_sp);
696 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
697 cmd.heavy_tx_thld_packets);
698 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
699 cmd.heavy_rx_thld_packets);
700 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
701 cmd.heavy_tx_thld_percentage);
702 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
703 cmd.heavy_rx_thld_percentage);
704 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
705 (cmd.flags &
706 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
707 1 : 0);
708
709 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
710 return pos;
711
712 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
713 cmd.snooze_interval);
714 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
715 cmd.snooze_window);
716
717 return pos;
718 }
719
720 void
721 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
722 struct iwl_beacon_filter_cmd *cmd)
723 {
724 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
725 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
726
727 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
728 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
729 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
730 cmd->bf_roaming_energy_delta =
731 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
732 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
733 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
734 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
735 cmd->bf_temp_threshold =
736 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
737 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
738 cmd->bf_temp_fast_filter =
739 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
740 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
741 cmd->bf_temp_slow_filter =
742 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
743 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
744 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
745 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
746 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
747 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
748 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
749 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
750 cmd->ba_enable_beacon_abort =
751 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
752 }
753 #endif
754
755 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
756 struct ieee80211_vif *vif,
757 struct iwl_beacon_filter_cmd *cmd,
758 u32 cmd_flags,
759 bool d0i3)
760 {
761 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
762 int ret;
763
764 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
765 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
766 return 0;
767
768 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
769 if (!d0i3)
770 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
771 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
772
773 /* don't change bf_enabled in case of temporary d0i3 configuration */
774 if (!ret && !d0i3)
775 mvmvif->bf_data.bf_enabled = true;
776
777 return ret;
778 }
779
780 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
781 struct ieee80211_vif *vif,
782 u32 flags)
783 {
784 struct iwl_beacon_filter_cmd cmd = {
785 IWL_BF_CMD_CONFIG_DEFAULTS,
786 .bf_enable_beacon_filter = cpu_to_le32(1),
787 };
788
789 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags, false);
790 }
791
792 static int iwl_mvm_update_beacon_abort(struct iwl_mvm *mvm,
793 struct ieee80211_vif *vif,
794 bool enable)
795 {
796 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
797 struct iwl_beacon_filter_cmd cmd = {
798 IWL_BF_CMD_CONFIG_DEFAULTS,
799 .bf_enable_beacon_filter = cpu_to_le32(1),
800 };
801
802 if (!mvmvif->bf_data.bf_enabled)
803 return 0;
804
805 if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
806 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
807
808 mvmvif->bf_data.ba_enabled = enable;
809 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0, false);
810 }
811
812 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
813 struct ieee80211_vif *vif,
814 u32 flags)
815 {
816 struct iwl_beacon_filter_cmd cmd = {};
817 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
818 int ret;
819
820 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
821 return 0;
822
823 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
824
825 if (!ret)
826 mvmvif->bf_data.bf_enabled = false;
827
828 return ret;
829 }
830
831 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
832 {
833 struct iwl_mvm_vif *mvmvif;
834 struct iwl_power_vifs vifs = {};
835 bool ba_enable;
836 int ret;
837
838 lockdep_assert_held(&mvm->mutex);
839
840 iwl_mvm_power_set_pm(mvm, &vifs);
841
842 /* disable PS if CAM */
843 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) {
844 mvm->ps_disabled = true;
845 } else {
846 /* don't update device power state unless we add / remove monitor */
847 if (vifs.monitor_vif) {
848 if (vifs.monitor_active)
849 mvm->ps_disabled = true;
850 ret = iwl_mvm_power_update_device(mvm);
851 if (ret)
852 return ret;
853 }
854 }
855
856 if (vifs.bss_vif) {
857 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
858 if (ret)
859 return ret;
860 }
861
862 if (vifs.p2p_vif) {
863 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
864 if (ret)
865 return ret;
866 }
867
868 if (!vifs.bf_vif)
869 return 0;
870
871 mvmvif = iwl_mvm_vif_from_mac80211(vifs.bf_vif);
872
873 ba_enable = !(!mvmvif->pm_enabled || mvm->ps_disabled ||
874 !vifs.bf_vif->bss_conf.ps ||
875 iwl_mvm_vif_low_latency(mvmvif));
876
877 return iwl_mvm_update_beacon_abort(mvm, vifs.bf_vif, ba_enable);
878 }
879
880 int iwl_mvm_update_d0i3_power_mode(struct iwl_mvm *mvm,
881 struct ieee80211_vif *vif,
882 bool enable, u32 flags)
883 {
884 int ret;
885 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
886 struct iwl_mac_power_cmd cmd = {};
887
888 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
889 return 0;
890
891 if (!vif->bss_conf.assoc)
892 return 0;
893
894 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
895 if (enable) {
896 /* configure skip over dtim up to 300 msec */
897 int dtimper = mvm->hw->conf.ps_dtim_period ?: 1;
898 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
899
900 if (WARN_ON(!dtimper_msec))
901 return 0;
902
903 cmd.skip_dtim_periods = 300 / dtimper_msec;
904 if (cmd.skip_dtim_periods)
905 cmd.flags |=
906 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
907 }
908 iwl_mvm_power_log(mvm, &cmd);
909 #ifdef CONFIG_IWLWIFI_DEBUGFS
910 memcpy(&mvmvif->mac_pwr_cmd, &cmd, sizeof(cmd));
911 #endif
912 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, flags,
913 sizeof(cmd), &cmd);
914 if (ret)
915 return ret;
916
917 /* configure beacon filtering */
918 if (mvmvif != mvm->bf_allowed_vif)
919 return 0;
920
921 if (enable) {
922 struct iwl_beacon_filter_cmd cmd_bf = {
923 IWL_BF_CMD_CONFIG_D0I3,
924 .bf_enable_beacon_filter = cpu_to_le32(1),
925 };
926 ret = _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd_bf,
927 flags, true);
928 } else {
929 if (mvmvif->bf_data.bf_enabled)
930 ret = iwl_mvm_enable_beacon_filter(mvm, vif, flags);
931 else
932 ret = iwl_mvm_disable_beacon_filter(mvm, vif, flags);
933 }
934
935 return ret;
936 }
Linux kernel - Deliverables
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