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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2019, 2021-2023 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/slab.h>
10#include <linux/etherdevice.h>
11
12#include <net/mac80211.h>
13
14#include "iwl-debug.h"
15#include "mvm.h"
16#include "iwl-modparams.h"
17#include "fw/api/power.h"
18
19#define POWER_KEEP_ALIVE_PERIOD_SEC 25
20
21static
22int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
23 struct iwl_beacon_filter_cmd *cmd,
24 u32 flags)
25{
26 u16 len;
27
28 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
29 le32_to_cpu(cmd->ba_enable_beacon_abort));
30 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
31 le32_to_cpu(cmd->ba_escape_timer));
32 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
33 le32_to_cpu(cmd->bf_debug_flag));
34 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
35 le32_to_cpu(cmd->bf_enable_beacon_filter));
36 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
37 le32_to_cpu(cmd->bf_energy_delta));
38 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
39 le32_to_cpu(cmd->bf_escape_timer));
40 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
41 le32_to_cpu(cmd->bf_roaming_energy_delta));
42 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
43 le32_to_cpu(cmd->bf_roaming_state));
44 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
45 le32_to_cpu(cmd->bf_temp_threshold));
46 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
47 le32_to_cpu(cmd->bf_temp_fast_filter));
48 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
49 le32_to_cpu(cmd->bf_temp_slow_filter));
50 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n",
51 le32_to_cpu(cmd->bf_threshold_absolute_low[0]),
52 le32_to_cpu(cmd->bf_threshold_absolute_low[1]));
53
54 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n",
55 le32_to_cpu(cmd->bf_threshold_absolute_high[0]),
56 le32_to_cpu(cmd->bf_threshold_absolute_high[1]));
57
58 if (fw_has_api(&mvm->fw->ucode_capa,
59 IWL_UCODE_TLV_API_BEACON_FILTER_V4))
60 len = sizeof(struct iwl_beacon_filter_cmd);
61 else
62 len = offsetof(struct iwl_beacon_filter_cmd,
63 bf_threshold_absolute_low);
64
65 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
66 len, cmd);
67}
68
69static
70void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
71 struct ieee80211_vif *vif,
72 struct iwl_beacon_filter_cmd *cmd)
73{
74 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
75
76 if (vif->bss_conf.cqm_rssi_thold) {
77 cmd->bf_energy_delta =
78 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
79 /* fw uses an absolute value for this */
80 cmd->bf_roaming_state =
81 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
82 }
83 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
84}
85
86static void iwl_mvm_power_log(struct iwl_mvm *mvm,
87 struct iwl_mac_power_cmd *cmd)
88{
89 IWL_DEBUG_POWER(mvm,
90 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
91 cmd->id_and_color, iwlmvm_mod_params.power_scheme,
92 le16_to_cpu(cmd->flags));
93 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
94 le16_to_cpu(cmd->keep_alive_seconds));
95
96 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
97 IWL_DEBUG_POWER(mvm, "Disable power management\n");
98 return;
99 }
100
101 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
102 le32_to_cpu(cmd->rx_data_timeout));
103 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
104 le32_to_cpu(cmd->tx_data_timeout));
105 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
106 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
107 cmd->skip_dtim_periods);
108 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
109 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
110 cmd->lprx_rssi_threshold);
111 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
112 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
113 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
114 le32_to_cpu(cmd->rx_data_timeout_uapsd));
115 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
116 le32_to_cpu(cmd->tx_data_timeout_uapsd));
117 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
118 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
119 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
120 }
121}
122
123static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
124 struct ieee80211_vif *vif,
125 struct iwl_mac_power_cmd *cmd)
126{
127 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
128 enum ieee80211_ac_numbers ac;
129 bool tid_found = false;
130
131 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ||
132 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
133 cmd->rx_data_timeout_uapsd =
134 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
135 cmd->tx_data_timeout_uapsd =
136 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
137 } else {
138 cmd->rx_data_timeout_uapsd =
139 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
140 cmd->tx_data_timeout_uapsd =
141 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
142 }
143
144#ifdef CONFIG_IWLWIFI_DEBUGFS
145 /* set advanced pm flag with no uapsd ACs to enable ps-poll */
146 if (mvmvif->dbgfs_pm.use_ps_poll) {
147 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
148 return;
149 }
150#endif
151
152 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
153 if (!mvmvif->deflink.queue_params[ac].uapsd)
154 continue;
155
156 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
157 cmd->flags |=
158 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
159
160 cmd->uapsd_ac_flags |= BIT(ac);
161
162 /* QNDP TID - the highest TID with no admission control */
163 if (!tid_found && !mvmvif->deflink.queue_params[ac].acm) {
164 tid_found = true;
165 switch (ac) {
166 case IEEE80211_AC_VO:
167 cmd->qndp_tid = 6;
168 break;
169 case IEEE80211_AC_VI:
170 cmd->qndp_tid = 5;
171 break;
172 case IEEE80211_AC_BE:
173 cmd->qndp_tid = 0;
174 break;
175 case IEEE80211_AC_BK:
176 cmd->qndp_tid = 1;
177 break;
178 }
179 }
180 }
181
182 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
183
184 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
185 BIT(IEEE80211_AC_VI) |
186 BIT(IEEE80211_AC_BE) |
187 BIT(IEEE80211_AC_BK))) {
188 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
189 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
190 cmd->snooze_window =
191 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
192 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
193 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
194 }
195
196 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len;
197
198 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
199 cmd->heavy_tx_thld_packets =
200 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
201 cmd->heavy_rx_thld_packets =
202 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
203 } else {
204 cmd->heavy_tx_thld_packets =
205 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
206 cmd->heavy_rx_thld_packets =
207 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
208 }
209 cmd->heavy_tx_thld_percentage =
210 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
211 cmd->heavy_rx_thld_percentage =
212 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
213}
214
215static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac,
216 struct ieee80211_vif *vif)
217{
218 bool *is_p2p_standalone = _data;
219
220 switch (ieee80211_vif_type_p2p(vif)) {
221 case NL80211_IFTYPE_P2P_GO:
222 case NL80211_IFTYPE_AP:
223 *is_p2p_standalone = false;
224 break;
225 case NL80211_IFTYPE_STATION:
226 if (vif->cfg.assoc)
227 *is_p2p_standalone = false;
228 break;
229
230 default:
231 break;
232 }
233}
234
235static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
236 struct ieee80211_vif *vif)
237{
238 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
239
240 if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr,
241 vif->cfg.ap_addr))
242 return false;
243
244 /*
245 * Avoid using uAPSD if P2P client is associated to GO that uses
246 * opportunistic power save. This is due to current FW limitation.
247 */
248 if (vif->p2p &&
249 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
250 IEEE80211_P2P_OPPPS_ENABLE_BIT))
251 return false;
252
253 /*
254 * Avoid using uAPSD if client is in DCM -
255 * low latency issue in Miracast
256 */
257 if (iwl_mvm_phy_ctx_count(mvm) >= 2)
258 return false;
259
260 if (vif->p2p) {
261 /* Allow U-APSD only if p2p is stand alone */
262 bool is_p2p_standalone = true;
263
264 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm))
265 return false;
266
267 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
268 IEEE80211_IFACE_ITER_NORMAL,
269 iwl_mvm_p2p_standalone_iterator,
270 &is_p2p_standalone);
271
272 if (!is_p2p_standalone)
273 return false;
274 }
275
276 return true;
277}
278
279static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif)
280{
281 struct ieee80211_chanctx_conf *chanctx_conf;
282 struct ieee80211_bss_conf *link_conf;
283 bool radar_detect = false;
284 unsigned int link_id;
285
286 rcu_read_lock();
287 for_each_vif_active_link(vif, link_conf, link_id) {
288 chanctx_conf = rcu_dereference(link_conf->chanctx_conf);
289 /* this happens on link switching, just ignore inactive ones */
290 if (!chanctx_conf)
291 continue;
292
293 radar_detect = !!(chanctx_conf->def.chan->flags &
294 IEEE80211_CHAN_RADAR);
295 if (radar_detect)
296 goto out;
297 }
298
299out:
300 rcu_read_unlock();
301 return radar_detect;
302}
303
304static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm,
305 struct ieee80211_vif *vif,
306 struct iwl_mac_power_cmd *cmd)
307{
308 int dtimper = vif->bss_conf.dtim_period ?: 1;
309 int skip;
310
311 /* disable, in case we're supposed to override */
312 cmd->skip_dtim_periods = 0;
313 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
314
315 if (iwl_mvm_power_is_radar(vif))
316 return;
317
318 if (dtimper >= 10)
319 return;
320
321 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
322 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP)
323 return;
324 skip = 2;
325 } else {
326 int dtimper_tu = dtimper * vif->bss_conf.beacon_int;
327
328 if (WARN_ON(!dtimper_tu))
329 return;
330 /* configure skip over dtim up to 900 TU DTIM interval */
331 skip = max_t(u8, 1, 900 / dtimper_tu);
332 }
333
334 cmd->skip_dtim_periods = skip;
335 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
336}
337
338static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
339 struct ieee80211_vif *vif,
340 struct iwl_mac_power_cmd *cmd)
341{
342 int dtimper, bi;
343 int keep_alive;
344 struct iwl_mvm_vif *mvmvif __maybe_unused =
345 iwl_mvm_vif_from_mac80211(vif);
346
347 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
348 mvmvif->color));
349 dtimper = vif->bss_conf.dtim_period;
350 bi = vif->bss_conf.beacon_int;
351
352 /*
353 * Regardless of power management state the driver must set
354 * keep alive period. FW will use it for sending keep alive NDPs
355 * immediately after association. Check that keep alive period
356 * is at least 3 * DTIM
357 */
358 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi),
359 USEC_PER_SEC);
360 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC);
361 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
362
363 if (mvm->ps_disabled)
364 return;
365
366 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
367
368 if (!vif->cfg.ps || !mvmvif->pm_enabled)
369 return;
370
371 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
372 (!fw_has_capa(&mvm->fw->ucode_capa,
373 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) ||
374 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE))
375 return;
376
377 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
378
379 if (vif->bss_conf.beacon_rate &&
380 (vif->bss_conf.beacon_rate->bitrate == 10 ||
381 vif->bss_conf.beacon_rate->bitrate == 60)) {
382 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
383 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
384 }
385
386 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd);
387
388 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) {
389 cmd->rx_data_timeout =
390 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
391 cmd->tx_data_timeout =
392 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
393 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
394 fw_has_capa(&mvm->fw->ucode_capa,
395 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) {
396 cmd->tx_data_timeout =
397 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT);
398 cmd->rx_data_timeout =
399 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT);
400 } else {
401 cmd->rx_data_timeout =
402 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
403 cmd->tx_data_timeout =
404 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
405 }
406
407 if (iwl_mvm_power_allow_uapsd(mvm, vif))
408 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
409
410#ifdef CONFIG_IWLWIFI_DEBUGFS
411 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
412 cmd->keep_alive_seconds =
413 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
414 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
415 if (mvmvif->dbgfs_pm.skip_over_dtim)
416 cmd->flags |=
417 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
418 else
419 cmd->flags &=
420 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
421 }
422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
423 cmd->rx_data_timeout =
424 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
425 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
426 cmd->tx_data_timeout =
427 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
428 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
429 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
430 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
431 if (mvmvif->dbgfs_pm.lprx_ena)
432 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
433 else
434 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
435 }
436 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
437 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
438 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
439 if (mvmvif->dbgfs_pm.snooze_ena)
440 cmd->flags |=
441 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
442 else
443 cmd->flags &=
444 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
445 }
446 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
447 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
448 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
449 cmd->flags |= cpu_to_le16(flag);
450 else
451 cmd->flags &= cpu_to_le16(flag);
452 }
453#endif /* CONFIG_IWLWIFI_DEBUGFS */
454}
455
456static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
457 struct ieee80211_vif *vif)
458{
459 struct iwl_mac_power_cmd cmd = {};
460
461 iwl_mvm_power_build_cmd(mvm, vif, &cmd);
462 iwl_mvm_power_log(mvm, &cmd);
463#ifdef CONFIG_IWLWIFI_DEBUGFS
464 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
465#endif
466
467 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
468 sizeof(cmd), &cmd);
469}
470
471int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
472{
473 struct iwl_device_power_cmd cmd = {
474 .flags = 0,
475 };
476
477 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
478 mvm->ps_disabled = true;
479
480 if (!mvm->ps_disabled)
481 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
482
483#ifdef CONFIG_IWLWIFI_DEBUGFS
484 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ?
485 mvm->disable_power_off_d3 : mvm->disable_power_off)
486 cmd.flags &=
487 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
488#endif
489 if (mvm->ext_clock_valid)
490 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK);
491
492 if (iwl_fw_lookup_cmd_ver(mvm->fw, POWER_TABLE_CMD, 0) >= 7 &&
493 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
494 cmd.flags |=
495 cpu_to_le16(DEVICE_POWER_FLAGS_NO_SLEEP_TILL_D3_MSK);
496
497 IWL_DEBUG_POWER(mvm,
498 "Sending device power command with flags = 0x%X\n",
499 cmd.flags);
500
501 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
502 &cmd);
503}
504
505void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
506{
507 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
508
509 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr,
510 vif->cfg.ap_addr))
511 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr);
512}
513
514static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
515 struct ieee80211_vif *vif)
516{
517 u8 *ap_sta_id = _data;
518 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
519 struct ieee80211_bss_conf *link_conf;
520 unsigned int link_id;
521
522 rcu_read_lock();
523 for_each_vif_active_link(vif, link_conf, link_id) {
524 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id];
525
526 /* The ap_sta_id is not expected to change during current
527 * association so no explicit protection is needed
528 */
529 if (link_info->ap_sta_id == *ap_sta_id) {
530 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr,
531 vif->cfg.ap_addr);
532 break;
533 }
534 }
535 rcu_read_unlock();
536}
537
538void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
539 struct iwl_rx_cmd_buffer *rxb)
540{
541 struct iwl_rx_packet *pkt = rxb_addr(rxb);
542 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
543 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
544
545 ieee80211_iterate_active_interfaces_atomic(
546 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
547 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
548}
549
550struct iwl_power_vifs {
551 struct iwl_mvm *mvm;
552 struct ieee80211_vif *bss_vif;
553 struct ieee80211_vif *p2p_vif;
554 struct ieee80211_vif *ap_vif;
555 struct ieee80211_vif *monitor_vif;
556 bool p2p_active;
557 bool bss_active;
558 bool ap_active;
559 bool monitor_active;
560};
561
562static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac,
563 struct ieee80211_vif *vif)
564{
565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
566
567 mvmvif->pm_enabled = false;
568}
569
570static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac,
571 struct ieee80211_vif *vif)
572{
573 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
574 bool *disable_ps = _data;
575
576 if (iwl_mvm_vif_is_active(mvmvif))
577 *disable_ps |= mvmvif->ps_disabled;
578}
579
580static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac,
581 struct ieee80211_vif *vif)
582{
583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
584 struct iwl_power_vifs *power_iterator = _data;
585 bool active;
586
587 if (!mvmvif->uploaded)
588 return;
589
590 active = iwl_mvm_vif_is_active(mvmvif);
591
592 switch (ieee80211_vif_type_p2p(vif)) {
593 case NL80211_IFTYPE_P2P_DEVICE:
594 break;
595
596 case NL80211_IFTYPE_P2P_GO:
597 case NL80211_IFTYPE_AP:
598 /* only a single MAC of the same type */
599 WARN_ON(power_iterator->ap_vif);
600 power_iterator->ap_vif = vif;
601 if (active)
602 power_iterator->ap_active = true;
603 break;
604
605 case NL80211_IFTYPE_MONITOR:
606 /* only a single MAC of the same type */
607 WARN_ON(power_iterator->monitor_vif);
608 power_iterator->monitor_vif = vif;
609 if (active)
610 power_iterator->monitor_active = true;
611 break;
612
613 case NL80211_IFTYPE_P2P_CLIENT:
614 /* only a single MAC of the same type */
615 WARN_ON(power_iterator->p2p_vif);
616 power_iterator->p2p_vif = vif;
617 if (active)
618 power_iterator->p2p_active = true;
619 break;
620
621 case NL80211_IFTYPE_STATION:
622 power_iterator->bss_vif = vif;
623 if (active)
624 power_iterator->bss_active = true;
625 break;
626
627 default:
628 break;
629 }
630}
631
632static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
633 struct iwl_power_vifs *vifs)
634{
635 struct iwl_mvm_vif *bss_mvmvif = NULL;
636 struct iwl_mvm_vif *p2p_mvmvif = NULL;
637 struct iwl_mvm_vif *ap_mvmvif = NULL;
638 bool client_same_channel = false;
639 bool ap_same_channel = false;
640
641 lockdep_assert_held(&mvm->mutex);
642
643 /* set pm_enable to false */
644 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
645 IEEE80211_IFACE_ITER_NORMAL,
646 iwl_mvm_power_disable_pm_iterator,
647 NULL);
648
649 if (vifs->bss_vif)
650 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
651
652 if (vifs->p2p_vif)
653 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
654
655 if (vifs->ap_vif)
656 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
657
658 /* don't allow PM if any TDLS stations exist */
659 if (iwl_mvm_tdls_sta_count(mvm, NULL))
660 return;
661
662 /* enable PM on bss if bss stand alone */
663 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active &&
664 !vifs->ap_active) {
665 bss_mvmvif->pm_enabled = true;
666 return;
667 }
668
669 /* enable PM on p2p if p2p stand alone */
670 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active &&
671 !vifs->ap_active) {
672 p2p_mvmvif->pm_enabled = true;
673 return;
674 }
675
676 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active)
677 client_same_channel =
678 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif);
679
680 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active)
681 ap_same_channel =
682 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif);
683
684 /* clients are not stand alone: enable PM if DCM */
685 if (!(client_same_channel || ap_same_channel)) {
686 if (bss_mvmvif && vifs->bss_active)
687 bss_mvmvif->pm_enabled = true;
688 if (p2p_mvmvif && vifs->p2p_active)
689 p2p_mvmvif->pm_enabled = true;
690 return;
691 }
692
693 /*
694 * There is only one channel in the system and there are only
695 * bss and p2p clients that share it
696 */
697 if (client_same_channel && !vifs->ap_active) {
698 /* share same channel*/
699 bss_mvmvif->pm_enabled = true;
700 p2p_mvmvif->pm_enabled = true;
701 }
702}
703
704#ifdef CONFIG_IWLWIFI_DEBUGFS
705int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
706 struct ieee80211_vif *vif, char *buf,
707 int bufsz)
708{
709 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
710 struct iwl_mac_power_cmd cmd = {};
711 int pos = 0;
712
713 mutex_lock(&mvm->mutex);
714 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
715 mutex_unlock(&mvm->mutex);
716
717 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
718 iwlmvm_mod_params.power_scheme);
719 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
720 le16_to_cpu(cmd.flags));
721 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
722 le16_to_cpu(cmd.keep_alive_seconds));
723
724 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
725 return pos;
726
727 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
728 (cmd.flags &
729 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
730 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
731 cmd.skip_dtim_periods);
732 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
733 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
734 le32_to_cpu(cmd.rx_data_timeout));
735 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
736 le32_to_cpu(cmd.tx_data_timeout));
737 }
738 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
739 pos += scnprintf(buf+pos, bufsz-pos,
740 "lprx_rssi_threshold = %d\n",
741 cmd.lprx_rssi_threshold);
742
743 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
744 return pos;
745
746 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
747 le32_to_cpu(cmd.rx_data_timeout_uapsd));
748 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
749 le32_to_cpu(cmd.tx_data_timeout_uapsd));
750 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
751 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
752 cmd.uapsd_ac_flags);
753 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
754 cmd.uapsd_max_sp);
755 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
756 cmd.heavy_tx_thld_packets);
757 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
758 cmd.heavy_rx_thld_packets);
759 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
760 cmd.heavy_tx_thld_percentage);
761 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
762 cmd.heavy_rx_thld_percentage);
763 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
764 (cmd.flags &
765 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
766 1 : 0);
767
768 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
769 return pos;
770
771 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
772 cmd.snooze_interval);
773 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
774 cmd.snooze_window);
775
776 return pos;
777}
778
779void
780iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
781 struct iwl_beacon_filter_cmd *cmd)
782{
783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
784 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
785
786 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
787 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
788 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
789 cmd->bf_roaming_energy_delta =
790 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
791 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
792 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
793 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
794 cmd->bf_temp_threshold =
795 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
796 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
797 cmd->bf_temp_fast_filter =
798 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
799 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
800 cmd->bf_temp_slow_filter =
801 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
802 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
803 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
804 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
805 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
806 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
807 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
808 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
809 cmd->ba_enable_beacon_abort =
810 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
811}
812#endif
813
814static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
815 struct ieee80211_vif *vif,
816 struct iwl_beacon_filter_cmd *cmd,
817 u32 cmd_flags)
818{
819 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
820 int ret;
821
822 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
823 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
824 return 0;
825
826 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd);
827 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
828 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
829
830 if (!ret)
831 mvmvif->bf_data.bf_enabled = true;
832
833 return ret;
834}
835
836int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
837 struct ieee80211_vif *vif,
838 u32 flags)
839{
840 struct iwl_beacon_filter_cmd cmd = {
841 IWL_BF_CMD_CONFIG_DEFAULTS,
842 .bf_enable_beacon_filter = cpu_to_le32(1),
843 };
844
845 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags);
846}
847
848static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
849 struct ieee80211_vif *vif,
850 u32 flags)
851{
852 struct iwl_beacon_filter_cmd cmd = {};
853 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
854 int ret;
855
856 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
857 return 0;
858
859 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
860
861 if (!ret)
862 mvmvif->bf_data.bf_enabled = false;
863
864 return ret;
865}
866
867int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
868 struct ieee80211_vif *vif,
869 u32 flags)
870{
871 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags);
872}
873
874static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm)
875{
876 bool disable_ps;
877 int ret;
878
879 /* disable PS if CAM */
880 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM);
881 /* ...or if any of the vifs require PS to be off */
882 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
883 IEEE80211_IFACE_ITER_NORMAL,
884 iwl_mvm_power_ps_disabled_iterator,
885 &disable_ps);
886
887 /* update device power state if it has changed */
888 if (mvm->ps_disabled != disable_ps) {
889 bool old_ps_disabled = mvm->ps_disabled;
890
891 mvm->ps_disabled = disable_ps;
892 ret = iwl_mvm_power_update_device(mvm);
893 if (ret) {
894 mvm->ps_disabled = old_ps_disabled;
895 return ret;
896 }
897 }
898
899 return 0;
900}
901
902static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm,
903 struct ieee80211_vif *vif)
904{
905 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
906 struct iwl_beacon_filter_cmd cmd = {
907 IWL_BF_CMD_CONFIG_DEFAULTS,
908 .bf_enable_beacon_filter = cpu_to_le32(1),
909 };
910
911 if (!mvmvif->bf_data.bf_enabled)
912 return 0;
913
914 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))
915 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
916
917 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled ||
918 mvm->ps_disabled ||
919 !vif->cfg.ps ||
920 iwl_mvm_vif_low_latency(mvmvif));
921
922 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0);
923}
924
925int iwl_mvm_power_update_ps(struct iwl_mvm *mvm)
926{
927 struct iwl_power_vifs vifs = {
928 .mvm = mvm,
929 };
930 int ret;
931
932 lockdep_assert_held(&mvm->mutex);
933
934 /* get vifs info */
935 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
936 IEEE80211_IFACE_ITER_NORMAL,
937 iwl_mvm_power_get_vifs_iterator, &vifs);
938
939 ret = iwl_mvm_power_set_ps(mvm);
940 if (ret)
941 return ret;
942
943 if (vifs.bss_vif)
944 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
945
946 return 0;
947}
948
949int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
950{
951 struct iwl_power_vifs vifs = {
952 .mvm = mvm,
953 };
954 int ret;
955
956 lockdep_assert_held(&mvm->mutex);
957
958 /* get vifs info */
959 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
960 IEEE80211_IFACE_ITER_NORMAL,
961 iwl_mvm_power_get_vifs_iterator, &vifs);
962
963 iwl_mvm_power_set_pm(mvm, &vifs);
964
965 ret = iwl_mvm_power_set_ps(mvm);
966 if (ret)
967 return ret;
968
969 if (vifs.bss_vif) {
970 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
971 if (ret)
972 return ret;
973 }
974
975 if (vifs.p2p_vif) {
976 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
977 if (ret)
978 return ret;
979 }
980
981 if (vifs.bss_vif)
982 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
983
984 return 0;
985}
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 - 2016 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67
68#include <linux/kernel.h>
69#include <linux/module.h>
70#include <linux/slab.h>
71#include <linux/etherdevice.h>
72
73#include <net/mac80211.h>
74
75#include "iwl-debug.h"
76#include "mvm.h"
77#include "iwl-modparams.h"
78#include "fw-api-power.h"
79
80#define POWER_KEEP_ALIVE_PERIOD_SEC 25
81
82static
83int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
84 struct iwl_beacon_filter_cmd *cmd,
85 u32 flags)
86{
87 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
88 le32_to_cpu(cmd->ba_enable_beacon_abort));
89 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
90 le32_to_cpu(cmd->ba_escape_timer));
91 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
92 le32_to_cpu(cmd->bf_debug_flag));
93 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
94 le32_to_cpu(cmd->bf_enable_beacon_filter));
95 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
96 le32_to_cpu(cmd->bf_energy_delta));
97 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
98 le32_to_cpu(cmd->bf_escape_timer));
99 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
100 le32_to_cpu(cmd->bf_roaming_energy_delta));
101 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
102 le32_to_cpu(cmd->bf_roaming_state));
103 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
104 le32_to_cpu(cmd->bf_temp_threshold));
105 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
106 le32_to_cpu(cmd->bf_temp_fast_filter));
107 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
108 le32_to_cpu(cmd->bf_temp_slow_filter));
109
110 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
111 sizeof(struct iwl_beacon_filter_cmd), cmd);
112}
113
114static
115void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
116 struct ieee80211_vif *vif,
117 struct iwl_beacon_filter_cmd *cmd,
118 bool d0i3)
119{
120 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
121
122 if (vif->bss_conf.cqm_rssi_thold && !d0i3) {
123 cmd->bf_energy_delta =
124 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
125 /* fw uses an absolute value for this */
126 cmd->bf_roaming_state =
127 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
128 }
129 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
130}
131
132static void iwl_mvm_power_log(struct iwl_mvm *mvm,
133 struct iwl_mac_power_cmd *cmd)
134{
135 IWL_DEBUG_POWER(mvm,
136 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
137 cmd->id_and_color, iwlmvm_mod_params.power_scheme,
138 le16_to_cpu(cmd->flags));
139 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
140 le16_to_cpu(cmd->keep_alive_seconds));
141
142 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
143 IWL_DEBUG_POWER(mvm, "Disable power management\n");
144 return;
145 }
146
147 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n",
148 le32_to_cpu(cmd->rx_data_timeout));
149 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n",
150 le32_to_cpu(cmd->tx_data_timeout));
151 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK))
152 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n",
153 cmd->skip_dtim_periods);
154 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
155 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n",
156 cmd->lprx_rssi_threshold);
157 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
158 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
159 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
160 le32_to_cpu(cmd->rx_data_timeout_uapsd));
161 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
162 le32_to_cpu(cmd->tx_data_timeout_uapsd));
163 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
164 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
165 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
166 }
167}
168
169static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
170 struct ieee80211_vif *vif,
171 struct iwl_mac_power_cmd *cmd)
172{
173 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
174 enum ieee80211_ac_numbers ac;
175 bool tid_found = false;
176
177 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
178 if (!mvmvif->queue_params[ac].uapsd)
179 continue;
180
181 if (mvm->cur_ucode != IWL_UCODE_WOWLAN)
182 cmd->flags |=
183 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
184
185 cmd->uapsd_ac_flags |= BIT(ac);
186
187 /* QNDP TID - the highest TID with no admission control */
188 if (!tid_found && !mvmvif->queue_params[ac].acm) {
189 tid_found = true;
190 switch (ac) {
191 case IEEE80211_AC_VO:
192 cmd->qndp_tid = 6;
193 break;
194 case IEEE80211_AC_VI:
195 cmd->qndp_tid = 5;
196 break;
197 case IEEE80211_AC_BE:
198 cmd->qndp_tid = 0;
199 break;
200 case IEEE80211_AC_BK:
201 cmd->qndp_tid = 1;
202 break;
203 }
204 }
205 }
206
207 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
208#ifdef CONFIG_IWLWIFI_DEBUGFS
209 /* set advanced pm flag with no uapsd ACs to enable ps-poll */
210 if (mvmvif->dbgfs_pm.use_ps_poll)
211 cmd->flags |=
212 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
213#endif
214 return;
215 }
216
217 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
218
219 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
220 BIT(IEEE80211_AC_VI) |
221 BIT(IEEE80211_AC_BE) |
222 BIT(IEEE80211_AC_BK))) {
223 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
224 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
225 cmd->snooze_window = (mvm->cur_ucode == IWL_UCODE_WOWLAN) ?
226 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
227 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
228 }
229
230 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len;
231
232 if (mvm->cur_ucode == IWL_UCODE_WOWLAN || cmd->flags &
233 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
234 cmd->rx_data_timeout_uapsd =
235 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
236 cmd->tx_data_timeout_uapsd =
237 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
238 } else {
239 cmd->rx_data_timeout_uapsd =
240 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
241 cmd->tx_data_timeout_uapsd =
242 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
243 }
244
245 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
246 cmd->heavy_tx_thld_packets =
247 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
248 cmd->heavy_rx_thld_packets =
249 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
250 } else {
251 cmd->heavy_tx_thld_packets =
252 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
253 cmd->heavy_rx_thld_packets =
254 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
255 }
256 cmd->heavy_tx_thld_percentage =
257 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
258 cmd->heavy_rx_thld_percentage =
259 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
260}
261
262static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac,
263 struct ieee80211_vif *vif)
264{
265 bool *is_p2p_standalone = _data;
266
267 switch (ieee80211_vif_type_p2p(vif)) {
268 case NL80211_IFTYPE_P2P_GO:
269 case NL80211_IFTYPE_AP:
270 *is_p2p_standalone = false;
271 break;
272 case NL80211_IFTYPE_STATION:
273 if (vif->bss_conf.assoc)
274 *is_p2p_standalone = false;
275 break;
276
277 default:
278 break;
279 }
280}
281
282static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
283 struct ieee80211_vif *vif)
284{
285 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
286
287 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
288 ETH_ALEN))
289 return false;
290
291 /*
292 * Avoid using uAPSD if P2P client is associated to GO that uses
293 * opportunistic power save. This is due to current FW limitation.
294 */
295 if (vif->p2p &&
296 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
297 IEEE80211_P2P_OPPPS_ENABLE_BIT))
298 return false;
299
300 /*
301 * Avoid using uAPSD if client is in DCM -
302 * low latency issue in Miracast
303 */
304 if (iwl_mvm_phy_ctx_count(mvm) >= 2)
305 return false;
306
307 if (vif->p2p) {
308 /* Allow U-APSD only if p2p is stand alone */
309 bool is_p2p_standalone = true;
310
311 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm))
312 return false;
313
314 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
315 IEEE80211_IFACE_ITER_NORMAL,
316 iwl_mvm_p2p_standalone_iterator,
317 &is_p2p_standalone);
318
319 if (!is_p2p_standalone)
320 return false;
321 }
322
323 return true;
324}
325
326static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif)
327{
328 struct ieee80211_chanctx_conf *chanctx_conf;
329 struct ieee80211_channel *chan;
330 bool radar_detect = false;
331
332 rcu_read_lock();
333 chanctx_conf = rcu_dereference(vif->chanctx_conf);
334 WARN_ON(!chanctx_conf);
335 if (chanctx_conf) {
336 chan = chanctx_conf->def.chan;
337 radar_detect = chan->flags & IEEE80211_CHAN_RADAR;
338 }
339 rcu_read_unlock();
340
341 return radar_detect;
342}
343
344static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm,
345 struct ieee80211_vif *vif,
346 struct iwl_mac_power_cmd *cmd,
347 bool host_awake)
348{
349 int dtimper = vif->bss_conf.dtim_period ?: 1;
350 int skip;
351
352 /* disable, in case we're supposed to override */
353 cmd->skip_dtim_periods = 0;
354 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
355
356 if (iwl_mvm_power_is_radar(vif))
357 return;
358
359 if (dtimper >= 10)
360 return;
361
362 /* TODO: check that multicast wake lock is off */
363
364 if (host_awake) {
365 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP)
366 return;
367 skip = 2;
368 } else {
369 int dtimper_tu = dtimper * vif->bss_conf.beacon_int;
370
371 if (WARN_ON(!dtimper_tu))
372 return;
373 /* configure skip over dtim up to 306TU - 314 msec */
374 skip = max_t(u8, 1, 306 / dtimper_tu);
375 }
376
377 /* the firmware really expects "look at every X DTIMs", so add 1 */
378 cmd->skip_dtim_periods = 1 + skip;
379 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
380}
381
382static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
383 struct ieee80211_vif *vif,
384 struct iwl_mac_power_cmd *cmd,
385 bool host_awake)
386{
387 int dtimper, bi;
388 int keep_alive;
389 struct iwl_mvm_vif *mvmvif __maybe_unused =
390 iwl_mvm_vif_from_mac80211(vif);
391
392 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
393 mvmvif->color));
394 dtimper = vif->bss_conf.dtim_period;
395 bi = vif->bss_conf.beacon_int;
396
397 /*
398 * Regardless of power management state the driver must set
399 * keep alive period. FW will use it for sending keep alive NDPs
400 * immediately after association. Check that keep alive period
401 * is at least 3 * DTIM
402 */
403 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi),
404 USEC_PER_SEC);
405 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC);
406 cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
407
408 if (mvm->ps_disabled)
409 return;
410
411 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
412
413 if (!vif->bss_conf.ps || !mvmvif->pm_enabled)
414 return;
415
416 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
417 (!fw_has_capa(&mvm->fw->ucode_capa,
418 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) ||
419 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE))
420 return;
421
422 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK);
423
424 if (vif->bss_conf.beacon_rate &&
425 (vif->bss_conf.beacon_rate->bitrate == 10 ||
426 vif->bss_conf.beacon_rate->bitrate == 60)) {
427 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
428 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD;
429 }
430
431 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd, host_awake);
432
433 if (!host_awake) {
434 cmd->rx_data_timeout =
435 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
436 cmd->tx_data_timeout =
437 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
438 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
439 fw_has_capa(&mvm->fw->ucode_capa,
440 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) {
441 cmd->tx_data_timeout =
442 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT);
443 cmd->rx_data_timeout =
444 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT);
445 } else {
446 cmd->rx_data_timeout =
447 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
448 cmd->tx_data_timeout =
449 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
450 }
451
452 if (iwl_mvm_power_allow_uapsd(mvm, vif))
453 iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
454
455#ifdef CONFIG_IWLWIFI_DEBUGFS
456 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
457 cmd->keep_alive_seconds =
458 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds);
459 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) {
460 if (mvmvif->dbgfs_pm.skip_over_dtim)
461 cmd->flags |=
462 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
463 else
464 cmd->flags &=
465 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK);
466 }
467 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT)
468 cmd->rx_data_timeout =
469 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout);
470 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT)
471 cmd->tx_data_timeout =
472 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout);
473 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS)
474 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods;
475 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) {
476 if (mvmvif->dbgfs_pm.lprx_ena)
477 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK);
478 else
479 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK);
480 }
481 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD)
482 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold;
483 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
484 if (mvmvif->dbgfs_pm.snooze_ena)
485 cmd->flags |=
486 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
487 else
488 cmd->flags &=
489 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
490 }
491 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
492 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
493 if (mvmvif->dbgfs_pm.uapsd_misbehaving)
494 cmd->flags |= cpu_to_le16(flag);
495 else
496 cmd->flags &= cpu_to_le16(flag);
497 }
498#endif /* CONFIG_IWLWIFI_DEBUGFS */
499}
500
501static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
502 struct ieee80211_vif *vif)
503{
504 struct iwl_mac_power_cmd cmd = {};
505
506 iwl_mvm_power_build_cmd(mvm, vif, &cmd,
507 mvm->cur_ucode != IWL_UCODE_WOWLAN);
508 iwl_mvm_power_log(mvm, &cmd);
509#ifdef CONFIG_IWLWIFI_DEBUGFS
510 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
511#endif
512
513 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
514 sizeof(cmd), &cmd);
515}
516
517int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
518{
519 struct iwl_device_power_cmd cmd = {
520 .flags = 0,
521 };
522
523 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
524 mvm->ps_disabled = true;
525
526 if (!mvm->ps_disabled)
527 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
528
529#ifdef CONFIG_IWLWIFI_DEBUGFS
530 if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
531 mvm->disable_power_off)
532 cmd.flags &=
533 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
534#endif
535 IWL_DEBUG_POWER(mvm,
536 "Sending device power command with flags = 0x%X\n",
537 cmd.flags);
538
539 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
540 &cmd);
541}
542
543void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
544{
545 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
546
547 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
548 ETH_ALEN))
549 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid);
550}
551
552static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
553 struct ieee80211_vif *vif)
554{
555 u8 *ap_sta_id = _data;
556 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
557
558 /* The ap_sta_id is not expected to change during current association
559 * so no explicit protection is needed
560 */
561 if (mvmvif->ap_sta_id == *ap_sta_id)
562 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
563 ETH_ALEN);
564}
565
566void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
567 struct iwl_rx_cmd_buffer *rxb)
568{
569 struct iwl_rx_packet *pkt = rxb_addr(rxb);
570 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
571 u8 ap_sta_id = le32_to_cpu(notif->sta_id);
572
573 ieee80211_iterate_active_interfaces_atomic(
574 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
575 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
576}
577
578struct iwl_power_vifs {
579 struct iwl_mvm *mvm;
580 struct ieee80211_vif *bss_vif;
581 struct ieee80211_vif *p2p_vif;
582 struct ieee80211_vif *ap_vif;
583 struct ieee80211_vif *monitor_vif;
584 bool p2p_active;
585 bool bss_active;
586 bool ap_active;
587 bool monitor_active;
588};
589
590static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac,
591 struct ieee80211_vif *vif)
592{
593 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
594
595 mvmvif->pm_enabled = false;
596}
597
598static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac,
599 struct ieee80211_vif *vif)
600{
601 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
602 bool *disable_ps = _data;
603
604 if (mvmvif->phy_ctxt)
605 if (mvmvif->phy_ctxt->id < MAX_PHYS)
606 *disable_ps |= mvmvif->ps_disabled;
607}
608
609static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac,
610 struct ieee80211_vif *vif)
611{
612 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
613 struct iwl_power_vifs *power_iterator = _data;
614
615 switch (ieee80211_vif_type_p2p(vif)) {
616 case NL80211_IFTYPE_P2P_DEVICE:
617 break;
618
619 case NL80211_IFTYPE_P2P_GO:
620 case NL80211_IFTYPE_AP:
621 /* only a single MAC of the same type */
622 WARN_ON(power_iterator->ap_vif);
623 power_iterator->ap_vif = vif;
624 if (mvmvif->phy_ctxt)
625 if (mvmvif->phy_ctxt->id < MAX_PHYS)
626 power_iterator->ap_active = true;
627 break;
628
629 case NL80211_IFTYPE_MONITOR:
630 /* only a single MAC of the same type */
631 WARN_ON(power_iterator->monitor_vif);
632 power_iterator->monitor_vif = vif;
633 if (mvmvif->phy_ctxt)
634 if (mvmvif->phy_ctxt->id < MAX_PHYS)
635 power_iterator->monitor_active = true;
636 break;
637
638 case NL80211_IFTYPE_P2P_CLIENT:
639 /* only a single MAC of the same type */
640 WARN_ON(power_iterator->p2p_vif);
641 power_iterator->p2p_vif = vif;
642 if (mvmvif->phy_ctxt)
643 if (mvmvif->phy_ctxt->id < MAX_PHYS)
644 power_iterator->p2p_active = true;
645 break;
646
647 case NL80211_IFTYPE_STATION:
648 power_iterator->bss_vif = vif;
649 if (mvmvif->phy_ctxt)
650 if (mvmvif->phy_ctxt->id < MAX_PHYS)
651 power_iterator->bss_active = true;
652 break;
653
654 default:
655 break;
656 }
657}
658
659static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
660 struct iwl_power_vifs *vifs)
661{
662 struct iwl_mvm_vif *bss_mvmvif = NULL;
663 struct iwl_mvm_vif *p2p_mvmvif = NULL;
664 struct iwl_mvm_vif *ap_mvmvif = NULL;
665 bool client_same_channel = false;
666 bool ap_same_channel = false;
667
668 lockdep_assert_held(&mvm->mutex);
669
670 /* set pm_enable to false */
671 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
672 IEEE80211_IFACE_ITER_NORMAL,
673 iwl_mvm_power_disable_pm_iterator,
674 NULL);
675
676 if (vifs->bss_vif)
677 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
678
679 if (vifs->p2p_vif)
680 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
681
682 if (vifs->ap_vif)
683 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
684
685 /* don't allow PM if any TDLS stations exist */
686 if (iwl_mvm_tdls_sta_count(mvm, NULL))
687 return;
688
689 /* enable PM on bss if bss stand alone */
690 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) {
691 bss_mvmvif->pm_enabled = true;
692 return;
693 }
694
695 /* enable PM on p2p if p2p stand alone */
696 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) {
697 p2p_mvmvif->pm_enabled = true;
698 return;
699 }
700
701 if (vifs->bss_active && vifs->p2p_active)
702 client_same_channel = (bss_mvmvif->phy_ctxt->id ==
703 p2p_mvmvif->phy_ctxt->id);
704 if (vifs->bss_active && vifs->ap_active)
705 ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
706 ap_mvmvif->phy_ctxt->id);
707
708 /* clients are not stand alone: enable PM if DCM */
709 if (!(client_same_channel || ap_same_channel)) {
710 if (vifs->bss_active)
711 bss_mvmvif->pm_enabled = true;
712 if (vifs->p2p_active)
713 p2p_mvmvif->pm_enabled = true;
714 return;
715 }
716
717 /*
718 * There is only one channel in the system and there are only
719 * bss and p2p clients that share it
720 */
721 if (client_same_channel && !vifs->ap_active) {
722 /* share same channel*/
723 bss_mvmvif->pm_enabled = true;
724 p2p_mvmvif->pm_enabled = true;
725 }
726}
727
728#ifdef CONFIG_IWLWIFI_DEBUGFS
729int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
730 struct ieee80211_vif *vif, char *buf,
731 int bufsz)
732{
733 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
734 struct iwl_mac_power_cmd cmd = {};
735 int pos = 0;
736
737 mutex_lock(&mvm->mutex);
738 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
739 mutex_unlock(&mvm->mutex);
740
741 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n",
742 iwlmvm_mod_params.power_scheme);
743 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n",
744 le16_to_cpu(cmd.flags));
745 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n",
746 le16_to_cpu(cmd.keep_alive_seconds));
747
748 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
749 return pos;
750
751 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n",
752 (cmd.flags &
753 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0);
754 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n",
755 cmd.skip_dtim_periods);
756 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
757 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n",
758 le32_to_cpu(cmd.rx_data_timeout));
759 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n",
760 le32_to_cpu(cmd.tx_data_timeout));
761 }
762 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK))
763 pos += scnprintf(buf+pos, bufsz-pos,
764 "lprx_rssi_threshold = %d\n",
765 cmd.lprx_rssi_threshold);
766
767 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
768 return pos;
769
770 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
771 le32_to_cpu(cmd.rx_data_timeout_uapsd));
772 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
773 le32_to_cpu(cmd.tx_data_timeout_uapsd));
774 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
775 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
776 cmd.uapsd_ac_flags);
777 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
778 cmd.uapsd_max_sp);
779 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
780 cmd.heavy_tx_thld_packets);
781 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
782 cmd.heavy_rx_thld_packets);
783 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
784 cmd.heavy_tx_thld_percentage);
785 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
786 cmd.heavy_rx_thld_percentage);
787 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
788 (cmd.flags &
789 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
790 1 : 0);
791
792 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
793 return pos;
794
795 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
796 cmd.snooze_interval);
797 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
798 cmd.snooze_window);
799
800 return pos;
801}
802
803void
804iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
805 struct iwl_beacon_filter_cmd *cmd)
806{
807 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
808 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
809
810 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
811 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
812 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
813 cmd->bf_roaming_energy_delta =
814 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
815 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
816 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
817 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
818 cmd->bf_temp_threshold =
819 cpu_to_le32(dbgfs_bf->bf_temp_threshold);
820 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
821 cmd->bf_temp_fast_filter =
822 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
823 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
824 cmd->bf_temp_slow_filter =
825 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
826 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
827 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
828 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
829 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
830 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
831 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
832 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
833 cmd->ba_enable_beacon_abort =
834 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
835}
836#endif
837
838static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
839 struct ieee80211_vif *vif,
840 struct iwl_beacon_filter_cmd *cmd,
841 u32 cmd_flags,
842 bool d0i3)
843{
844 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
845 int ret;
846
847 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
848 vif->type != NL80211_IFTYPE_STATION || vif->p2p)
849 return 0;
850
851 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd, d0i3);
852 if (!d0i3)
853 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
854 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
855
856 /* don't change bf_enabled in case of temporary d0i3 configuration */
857 if (!ret && !d0i3)
858 mvmvif->bf_data.bf_enabled = true;
859
860 return ret;
861}
862
863int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
864 struct ieee80211_vif *vif,
865 u32 flags)
866{
867 struct iwl_beacon_filter_cmd cmd = {
868 IWL_BF_CMD_CONFIG_DEFAULTS,
869 .bf_enable_beacon_filter = cpu_to_le32(1),
870 };
871
872 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags, false);
873}
874
875static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
876 struct ieee80211_vif *vif,
877 u32 flags, bool d0i3)
878{
879 struct iwl_beacon_filter_cmd cmd = {};
880 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
881 int ret;
882
883 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
884 return 0;
885
886 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
887
888 /* don't change bf_enabled in case of temporary d0i3 configuration */
889 if (!ret && !d0i3)
890 mvmvif->bf_data.bf_enabled = false;
891
892 return ret;
893}
894
895int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
896 struct ieee80211_vif *vif,
897 u32 flags)
898{
899 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags, false);
900}
901
902static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm)
903{
904 bool disable_ps;
905 int ret;
906
907 /* disable PS if CAM */
908 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM);
909 /* ...or if any of the vifs require PS to be off */
910 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
911 IEEE80211_IFACE_ITER_NORMAL,
912 iwl_mvm_power_ps_disabled_iterator,
913 &disable_ps);
914
915 /* update device power state if it has changed */
916 if (mvm->ps_disabled != disable_ps) {
917 bool old_ps_disabled = mvm->ps_disabled;
918
919 mvm->ps_disabled = disable_ps;
920 ret = iwl_mvm_power_update_device(mvm);
921 if (ret) {
922 mvm->ps_disabled = old_ps_disabled;
923 return ret;
924 }
925 }
926
927 return 0;
928}
929
930static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm,
931 struct ieee80211_vif *vif)
932{
933 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
934 struct iwl_beacon_filter_cmd cmd = {
935 IWL_BF_CMD_CONFIG_DEFAULTS,
936 .bf_enable_beacon_filter = cpu_to_le32(1),
937 };
938
939 if (!mvmvif->bf_data.bf_enabled)
940 return 0;
941
942 if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
943 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
944
945 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled ||
946 mvm->ps_disabled ||
947 !vif->bss_conf.ps ||
948 iwl_mvm_vif_low_latency(mvmvif));
949
950 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0, false);
951}
952
953int iwl_mvm_power_update_ps(struct iwl_mvm *mvm)
954{
955 struct iwl_power_vifs vifs = {
956 .mvm = mvm,
957 };
958 int ret;
959
960 lockdep_assert_held(&mvm->mutex);
961
962 /* get vifs info */
963 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
964 IEEE80211_IFACE_ITER_NORMAL,
965 iwl_mvm_power_get_vifs_iterator, &vifs);
966
967 ret = iwl_mvm_power_set_ps(mvm);
968 if (ret)
969 return ret;
970
971 if (vifs.bss_vif)
972 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
973
974 return 0;
975}
976
977int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
978{
979 struct iwl_power_vifs vifs = {
980 .mvm = mvm,
981 };
982 int ret;
983
984 lockdep_assert_held(&mvm->mutex);
985
986 /* get vifs info */
987 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
988 IEEE80211_IFACE_ITER_NORMAL,
989 iwl_mvm_power_get_vifs_iterator, &vifs);
990
991 iwl_mvm_power_set_pm(mvm, &vifs);
992
993 ret = iwl_mvm_power_set_ps(mvm);
994 if (ret)
995 return ret;
996
997 if (vifs.bss_vif) {
998 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
999 if (ret)
1000 return ret;
1001 }
1002
1003 if (vifs.p2p_vif) {
1004 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
1005 if (ret)
1006 return ret;
1007 }
1008
1009 if (vifs.bss_vif)
1010 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
1011
1012 return 0;
1013}
1014
1015int iwl_mvm_update_d0i3_power_mode(struct iwl_mvm *mvm,
1016 struct ieee80211_vif *vif,
1017 bool enable, u32 flags)
1018{
1019 int ret;
1020 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1021 struct iwl_mac_power_cmd cmd = {};
1022
1023 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1024 return 0;
1025
1026 if (!vif->bss_conf.assoc)
1027 return 0;
1028
1029 iwl_mvm_power_build_cmd(mvm, vif, &cmd, !enable);
1030
1031 iwl_mvm_power_log(mvm, &cmd);
1032#ifdef CONFIG_IWLWIFI_DEBUGFS
1033 memcpy(&mvmvif->mac_pwr_cmd, &cmd, sizeof(cmd));
1034#endif
1035 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, flags,
1036 sizeof(cmd), &cmd);
1037 if (ret)
1038 return ret;
1039
1040 /* configure beacon filtering */
1041 if (mvmvif != mvm->bf_allowed_vif)
1042 return 0;
1043
1044 if (enable) {
1045 struct iwl_beacon_filter_cmd cmd_bf = {
1046 IWL_BF_CMD_CONFIG_D0I3,
1047 .bf_enable_beacon_filter = cpu_to_le32(1),
1048 };
1049 /*
1050 * When beacon storing is supported - disable beacon filtering
1051 * altogether - the latest beacon will be sent when exiting d0i3
1052 */
1053 if (fw_has_capa(&mvm->fw->ucode_capa,
1054 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1055 ret = _iwl_mvm_disable_beacon_filter(mvm, vif, flags,
1056 true);
1057 else
1058 ret = _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd_bf,
1059 flags, true);
1060 } else {
1061 if (mvmvif->bf_data.bf_enabled)
1062 ret = iwl_mvm_enable_beacon_filter(mvm, vif, flags);
1063 else
1064 ret = iwl_mvm_disable_beacon_filter(mvm, vif, flags);
1065 }
1066
1067 return ret;
1068}