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[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 bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
250 struct ieee80211_vif *vif)
251 {
252 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
253
254 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
255 ETH_ALEN))
256 return false;
257
258 if (vif->p2p &&
259 !(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PS_UAPSD))
260 return false;
261 /*
262 * Avoid using uAPSD if P2P client is associated to GO that uses
263 * opportunistic power save. This is due to current FW limitation.
264 */
265 if (vif->p2p &&
266 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
267 IEEE80211_P2P_OPPPS_ENABLE_BIT))
268 return false;
269
270 /*
271 * Avoid using uAPSD if client is in DCM -
272 * low latency issue in Miracast
273 */
274 if (iwl_mvm_phy_ctx_count(mvm) >= 2)
275 return false;
276
277 return true;
278 }
279
280 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
281 struct ieee80211_vif *vif,
282 struct iwl_mac_power_cmd *cmd)
283 {
284 struct ieee80211_hw *hw = mvm->hw;
285 struct ieee80211_chanctx_conf *chanctx_conf;
286 struct ieee80211_channel *chan;
287 int dtimper, dtimper_msec;
288 int keep_alive;
289 bool radar_detect = false;
290 struct iwl_mvm_vif *mvmvif __maybe_unused =
291 iwl_mvm_vif_from_mac80211(vif);
292
293 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
294 mvmvif->color));
295 dtimper = hw->conf.ps_dtim_period ?: 1;
296
297 /*
298 * Regardless of power management state the driver must set
299 * keep alive period. FW will use it for sending keep alive NDPs
300 * immediately after association. Check that keep alive period
301 * is at least 3 * DTIM
302 */
303 dtimper_msec = dtimper * vif->bss_conf.beacon_int;
304 keep_alive = max_t(int, 3 * dtimper_msec,
305 MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC);
306 keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC);
307 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
308
309 if (mvm->ps_disabled)
310 return;
311
312 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
313
314 if (!vif->bss_conf.ps || iwl_mvm_vif_low_latency(mvmvif) ||
315 !mvmvif->pm_enabled)
316 return;
317
318 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
319
320 if (vif->bss_conf.beacon_rate &&
321 (vif->bss_conf.beacon_rate->bitrate == 10 ||
322 vif->bss_conf.beacon_rate->bitrate == 60)) {
323 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
324 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
325 }
326
327 /* Check if radar detection is required on current channel */
328 rcu_read_lock();
329 chanctx_conf = rcu_dereference(vif->chanctx_conf);
330 WARN_ON(!chanctx_conf);
331 if (chanctx_conf) {
332 chan = chanctx_conf->def.chan;
333 radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
334 }
335 rcu_read_unlock();
336
337 /* Check skip over DTIM conditions */
338 if (!radar_detect && (dtimper <= 10) &&
339 (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP ||
340 mvm->cur_ucode == IWL_UCODE_WOWLAN)) {
341 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
342 cmd->skip_dtim_periods = 3;
343 }
344
345 if (mvm->cur_ucode != IWL_UCODE_WOWLAN) {
346 cmd->rx_data_timeout =
347 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
348 cmd->tx_data_timeout =
349 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
350 } else {
351 cmd->rx_data_timeout =
352 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
353 cmd->tx_data_timeout =
354 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
355 }
356
357 if (iwl_mvm_power_allow_uapsd(mvm, vif))
358 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
359
360 #ifdef CONFIG_IWLWIFI_DEBUGFS
361 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
362 cmd->keep_alive_seconds =
363 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
364 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
365 if (mvmvif->dbgfs_pm.skip_over_dtim)
366 cmd->flags |=
367 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
368 else
369 cmd->flags &=
370 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
371 }
372 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
373 cmd->rx_data_timeout =
374 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
375 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
376 cmd->tx_data_timeout =
377 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
378 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
379 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
380 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
381 if (mvmvif->dbgfs_pm.lprx_ena)
382 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
383 else
384 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
385 }
386 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
387 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
388 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
389 if (mvmvif->dbgfs_pm.snooze_ena)
390 cmd->flags |=
391 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
392 else
393 cmd->flags &=
394 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
395 }
396 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
397 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
398 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
399 cmd->flags |= cpu_to_le16(flag);
400 else
401 cmd->flags &= cpu_to_le16(flag);
402 }
403 #endif /* CONFIG_IWLWIFI_DEBUGFS */
404 }
405
406 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
407 struct ieee80211_vif *vif)
408 {
409 struct iwl_mac_power_cmd cmd = {};
410
411 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
412 iwl_mvm_power_log(mvm, &cmd);
413 #ifdef CONFIG_IWLWIFI_DEBUGFS
414 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
415 #endif
416
417 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
418 sizeof(cmd), &cmd);
419 }
420
421 int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
422 {
423 struct iwl_device_power_cmd cmd = {
424 .flags = cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK),
425 };
426
427 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
428 mvm->ps_disabled = true;
429
430 if (mvm->ps_disabled)
431 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_CAM_MSK);
432
433 #ifdef CONFIG_IWLWIFI_DEBUGFS
434 if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
435 mvm->disable_power_off)
436 cmd.flags &=
437 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
438 #endif
439 IWL_DEBUG_POWER(mvm,
440 "Sending device power command with flags = 0x%X\n",
441 cmd.flags);
442
443 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
444 &cmd);
445 }
446
447 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
448 {
449 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
450
451 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
452 ETH_ALEN))
453 memset(mvmvif->uapsd_misbehaving_bssid, 0, ETH_ALEN);
454 }
455
456 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
457 struct ieee80211_vif *vif)
458 {
459 u8 *ap_sta_id = _data;
460 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
461
462 /* The ap_sta_id is not expected to change during current association
463 * so no explicit protection is needed
464 */
465 if (mvmvif->ap_sta_id == *ap_sta_id)
466 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
467 ETH_ALEN);
468 }
469
470 int iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
471 struct iwl_rx_cmd_buffer *rxb,
472 struct iwl_device_cmd *cmd)
473 {
474 struct iwl_rx_packet *pkt = rxb_addr(rxb);
475 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
476 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
477
478 ieee80211_iterate_active_interfaces_atomic(
479 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
480 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
481
482 return 0;
483 }
484
485 struct iwl_power_vifs {
486 struct iwl_mvm *mvm;
487 struct ieee80211_vif *bf_vif;
488 struct ieee80211_vif *bss_vif;
489 struct ieee80211_vif *p2p_vif;
490 struct ieee80211_vif *ap_vif;
491 struct ieee80211_vif *monitor_vif;
492 bool p2p_active;
493 bool bss_active;
494 bool ap_active;
495 bool monitor_active;
496 bool bss_tdls;
497 bool p2p_tdls;
498 };
499
500 static void iwl_mvm_power_iterator(void *_data, u8 *mac,
501 struct ieee80211_vif *vif)
502 {
503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
504 struct iwl_power_vifs *power_iterator = _data;
505
506 mvmvif->pm_enabled = false;
507 switch (ieee80211_vif_type_p2p(vif)) {
508 case NL80211_IFTYPE_P2P_DEVICE:
509 break;
510
511 case NL80211_IFTYPE_P2P_GO:
512 case NL80211_IFTYPE_AP:
513 /* only a single MAC of the same type */
514 WARN_ON(power_iterator->ap_vif);
515 power_iterator->ap_vif = vif;
516 if (mvmvif->phy_ctxt)
517 if (mvmvif->phy_ctxt->id < MAX_PHYS)
518 power_iterator->ap_active = true;
519 break;
520
521 case NL80211_IFTYPE_MONITOR:
522 /* only a single MAC of the same type */
523 WARN_ON(power_iterator->monitor_vif);
524 power_iterator->monitor_vif = vif;
525 if (mvmvif->phy_ctxt)
526 if (mvmvif->phy_ctxt->id < MAX_PHYS)
527 power_iterator->monitor_active = true;
528 break;
529
530 case NL80211_IFTYPE_P2P_CLIENT:
531 /* only a single MAC of the same type */
532 WARN_ON(power_iterator->p2p_vif);
533 power_iterator->p2p_vif = vif;
534 power_iterator->p2p_tdls =
535 !!iwl_mvm_tdls_sta_count(power_iterator->mvm, vif);
536 if (mvmvif->phy_ctxt)
537 if (mvmvif->phy_ctxt->id < MAX_PHYS)
538 power_iterator->p2p_active = true;
539 break;
540
541 case NL80211_IFTYPE_STATION:
542 /* only a single MAC of the same type */
543 WARN_ON(power_iterator->bss_vif);
544 power_iterator->bss_vif = vif;
545 power_iterator->bss_tdls =
546 !!iwl_mvm_tdls_sta_count(power_iterator->mvm, vif);
547 if (mvmvif->phy_ctxt)
548 if (mvmvif->phy_ctxt->id < MAX_PHYS)
549 power_iterator->bss_active = true;
550
551 if (mvmvif->bf_data.bf_enabled &&
552 !WARN_ON(power_iterator->bf_vif))
553 power_iterator->bf_vif = vif;
554
555 break;
556
557 default:
558 break;
559 }
560 }
561
562 static void
563 iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
564 struct iwl_power_vifs *vifs)
565 {
566 struct iwl_mvm_vif *bss_mvmvif = NULL;
567 struct iwl_mvm_vif *p2p_mvmvif = NULL;
568 struct iwl_mvm_vif *ap_mvmvif = NULL;
569 bool client_same_channel = false;
570 bool ap_same_channel = false;
571
572 lockdep_assert_held(&mvm->mutex);
573
574 /* get vifs info + set pm_enable to false */
575 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
576 IEEE80211_IFACE_ITER_NORMAL,
577 iwl_mvm_power_iterator, vifs);
578
579 if (vifs->bss_vif)
580 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
581
582 if (vifs->p2p_vif)
583 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
584
585 if (vifs->ap_vif)
586 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
587
588 /* enable PM on bss if bss stand alone */
589 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active &&
590 !vifs->bss_tdls) {
591 bss_mvmvif->pm_enabled = true;
592 return;
593 }
594
595 /* enable PM on p2p if p2p stand alone */
596 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active &&
597 !vifs->p2p_tdls) {
598 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
599 p2p_mvmvif->pm_enabled = true;
600 return;
601 }
602
603 if (vifs->bss_active && vifs->p2p_active)
604 client_same_channel = (bss_mvmvif->phy_ctxt->id ==
605 p2p_mvmvif->phy_ctxt->id);
606 if (vifs->bss_active && vifs->ap_active)
607 ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
608 ap_mvmvif->phy_ctxt->id);
609
610 /* clients are not stand alone: enable PM if DCM */
611 if (!(client_same_channel || ap_same_channel) &&
612 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_DCM)) {
613 if (vifs->bss_active)
614 bss_mvmvif->pm_enabled = true;
615 if (vifs->p2p_active &&
616 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM))
617 p2p_mvmvif->pm_enabled = true;
618 return;
619 }
620
621 /*
622 * There is only one channel in the system and there are only
623 * bss and p2p clients that share it
624 */
625 if (client_same_channel && !vifs->ap_active &&
626 (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BSS_P2P_PS_SCM)) {
627 /* share same channel*/
628 bss_mvmvif->pm_enabled = true;
629 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_P2P_PM)
630 p2p_mvmvif->pm_enabled = true;
631 }
632 }
633
634 #ifdef CONFIG_IWLWIFI_DEBUGFS
635 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
636 struct ieee80211_vif *vif, char *buf,
637 int bufsz)
638 {
639 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
640 struct iwl_mac_power_cmd cmd = {};
641 int pos = 0;
642
643 mutex_lock(&mvm->mutex);
644 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
645 mutex_unlock(&mvm->mutex);
646
647 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
648 iwlmvm_mod_params.power_scheme);
649 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
650 le16_to_cpu(cmd.flags));
651 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
652 le16_to_cpu(cmd.keep_alive_seconds));
653
654 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
655 return pos;
656
657 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
658 (cmd.flags &
659 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
660 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
661 cmd.skip_dtim_periods);
662 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
663 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
664 le32_to_cpu(cmd.rx_data_timeout));
665 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
666 le32_to_cpu(cmd.tx_data_timeout));
667 }
668 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
669 pos += scnprintf(buf+pos, bufsz-pos,
670 "lprx_rssi_threshold = %d\n",
671 cmd.lprx_rssi_threshold);
672
673 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
674 return pos;
675
676 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
677 le32_to_cpu(cmd.rx_data_timeout_uapsd));
678 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
679 le32_to_cpu(cmd.tx_data_timeout_uapsd));
680 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
681 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
682 cmd.uapsd_ac_flags);
683 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
684 cmd.uapsd_max_sp);
685 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
686 cmd.heavy_tx_thld_packets);
687 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
688 cmd.heavy_rx_thld_packets);
689 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
690 cmd.heavy_tx_thld_percentage);
691 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
692 cmd.heavy_rx_thld_percentage);
693 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
694 (cmd.flags &
695 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
696 1 : 0);
697
698 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
699 return pos;
700
701 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
702 cmd.snooze_interval);
703 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
704 cmd.snooze_window);
705
706 return pos;
707 }
708
709 void
710 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
711 struct iwl_beacon_filter_cmd *cmd)
712 {
713 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
714 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
715
716 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
717 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
718 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
719 cmd->bf_roaming_energy_delta =
720 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
721 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
722 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
723 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
724 cmd->bf_temp_threshold =
725 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
726 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
727 cmd->bf_temp_fast_filter =
728 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
729 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
730 cmd->bf_temp_slow_filter =
731 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
732 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
733 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
734 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
735 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
736 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
737 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
738 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
739 cmd->ba_enable_beacon_abort =
740 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
741 }
742 #endif
743
744 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
745 struct ieee80211_vif *vif,
746 struct iwl_beacon_filter_cmd *cmd,
747 u32 cmd_flags,
748 bool d0i3)
749 {
750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
751 int ret;
752
753 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
754 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
755 return 0;
756
757 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
758 if (!d0i3)
759 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
760 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
761
762 /* don't change bf_enabled in case of temporary d0i3 configuration */
763 if (!ret && !d0i3)
764 mvmvif->bf_data.bf_enabled = true;
765
766 return ret;
767 }
768
769 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
770 struct ieee80211_vif *vif,
771 u32 flags)
772 {
773 struct iwl_beacon_filter_cmd cmd = {
774 IWL_BF_CMD_CONFIG_DEFAULTS,
775 .bf_enable_beacon_filter = cpu_to_le32(1),
776 };
777
778 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags, false);
779 }
780
781 static int iwl_mvm_update_beacon_abort(struct iwl_mvm *mvm,
782 struct ieee80211_vif *vif,
783 bool enable)
784 {
785 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
786 struct iwl_beacon_filter_cmd cmd = {
787 IWL_BF_CMD_CONFIG_DEFAULTS,
788 .bf_enable_beacon_filter = cpu_to_le32(1),
789 };
790
791 if (!mvmvif->bf_data.bf_enabled)
792 return 0;
793
794 if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
795 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
796
797 mvmvif->bf_data.ba_enabled = enable;
798 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0, false);
799 }
800
801 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
802 struct ieee80211_vif *vif,
803 u32 flags)
804 {
805 struct iwl_beacon_filter_cmd cmd = {};
806 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
807 int ret;
808
809 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
810 return 0;
811
812 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
813
814 if (!ret)
815 mvmvif->bf_data.bf_enabled = false;
816
817 return ret;
818 }
819
820 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
821 {
822 struct iwl_mvm_vif *mvmvif;
823 struct iwl_power_vifs vifs = {
824 .mvm = mvm,
825 };
826 bool ba_enable;
827 int ret;
828
829 lockdep_assert_held(&mvm->mutex);
830
831 iwl_mvm_power_set_pm(mvm, &vifs);
832
833 /* disable PS if CAM */
834 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) {
835 mvm->ps_disabled = true;
836 } else {
837 /* don't update device power state unless we add / remove monitor */
838 if (vifs.monitor_vif) {
839 if (vifs.monitor_active)
840 mvm->ps_disabled = true;
841 ret = iwl_mvm_power_update_device(mvm);
842 if (ret)
843 return ret;
844 }
845 }
846
847 if (vifs.bss_vif) {
848 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
849 if (ret)
850 return ret;
851 }
852
853 if (vifs.p2p_vif) {
854 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
855 if (ret)
856 return ret;
857 }
858
859 if (!vifs.bf_vif)
860 return 0;
861
862 mvmvif = iwl_mvm_vif_from_mac80211(vifs.bf_vif);
863
864 ba_enable = !(!mvmvif->pm_enabled || mvm->ps_disabled ||
865 !vifs.bf_vif->bss_conf.ps ||
866 iwl_mvm_vif_low_latency(mvmvif));
867
868 return iwl_mvm_update_beacon_abort(mvm, vifs.bf_vif, ba_enable);
869 }
870
871 int iwl_mvm_update_d0i3_power_mode(struct iwl_mvm *mvm,
872 struct ieee80211_vif *vif,
873 bool enable, u32 flags)
874 {
875 int ret;
876 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
877 struct iwl_mac_power_cmd cmd = {};
878
879 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
880 return 0;
881
882 if (!vif->bss_conf.assoc)
883 return 0;
884
885 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
886 if (enable) {
887 /* configure skip over dtim up to 300 msec */
888 int dtimper = mvm->hw->conf.ps_dtim_period ?: 1;
889 int dtimper_msec = dtimper * vif->bss_conf.beacon_int;
890
891 if (WARN_ON(!dtimper_msec))
892 return 0;
893
894 cmd.skip_dtim_periods = 300 / dtimper_msec;
895 if (cmd.skip_dtim_periods)
896 cmd.flags |=
897 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
898 }
899 iwl_mvm_power_log(mvm, &cmd);
900 #ifdef CONFIG_IWLWIFI_DEBUGFS
901 memcpy(&mvmvif->mac_pwr_cmd, &cmd, sizeof(cmd));
902 #endif
903 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, flags,
904 sizeof(cmd), &cmd);
905 if (ret)
906 return ret;
907
908 /* configure beacon filtering */
909 if (mvmvif != mvm->bf_allowed_vif)
910 return 0;
911
912 if (enable) {
913 struct iwl_beacon_filter_cmd cmd_bf = {
914 IWL_BF_CMD_CONFIG_D0I3,
915 .bf_enable_beacon_filter = cpu_to_le32(1),
916 };
917 ret = _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd_bf,
918 flags, true);
919 } else {
920 if (mvmvif->bf_data.bf_enabled)
921 ret = iwl_mvm_enable_beacon_filter(mvm, vif, flags);
922 else
923 ret = iwl_mvm_disable_beacon_filter(mvm, vif, flags);
924 }
925
926 return ret;
927 }
Linux kernel - Deliverables
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