1/****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright (C) 2018 - 2019 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 34 * Copyright (C) 2018 - 2019 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 65#include <linux/kernel.h> 66#include <linux/module.h> 67#include <linux/slab.h> 68#include <linux/etherdevice.h> 69 70#include <net/mac80211.h> 71 72#include "iwl-debug.h" 73#include "mvm.h" 74#include "iwl-modparams.h" 75#include "fw/api/power.h" 76 77#define POWER_KEEP_ALIVE_PERIOD_SEC 25 78 79static 80int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm, 81 struct iwl_beacon_filter_cmd *cmd, 82 u32 flags) 83{ 84 u16 len; 85 86 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n", 87 le32_to_cpu(cmd->ba_enable_beacon_abort)); 88 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n", 89 le32_to_cpu(cmd->ba_escape_timer)); 90 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n", 91 le32_to_cpu(cmd->bf_debug_flag)); 92 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n", 93 le32_to_cpu(cmd->bf_enable_beacon_filter)); 94 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n", 95 le32_to_cpu(cmd->bf_energy_delta)); 96 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n", 97 le32_to_cpu(cmd->bf_escape_timer)); 98 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n", 99 le32_to_cpu(cmd->bf_roaming_energy_delta)); 100 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n", 101 le32_to_cpu(cmd->bf_roaming_state)); 102 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n", 103 le32_to_cpu(cmd->bf_temp_threshold)); 104 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n", 105 le32_to_cpu(cmd->bf_temp_fast_filter)); 106 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n", 107 le32_to_cpu(cmd->bf_temp_slow_filter)); 108 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n", 109 le32_to_cpu(cmd->bf_threshold_absolute_low[0]), 110 le32_to_cpu(cmd->bf_threshold_absolute_low[1])); 111 112 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n", 113 le32_to_cpu(cmd->bf_threshold_absolute_high[0]), 114 le32_to_cpu(cmd->bf_threshold_absolute_high[1])); 115 116 if (fw_has_api(&mvm->fw->ucode_capa, 117 IWL_UCODE_TLV_API_BEACON_FILTER_V4)) 118 len = sizeof(struct iwl_beacon_filter_cmd); 119 else 120 len = offsetof(struct iwl_beacon_filter_cmd, 121 bf_threshold_absolute_low); 122 123 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags, 124 len, cmd); 125} 126 127static 128void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm, 129 struct ieee80211_vif *vif, 130 struct iwl_beacon_filter_cmd *cmd) 131{ 132 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 133 134 if (vif->bss_conf.cqm_rssi_thold) { 135 cmd->bf_energy_delta = 136 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst); 137 /* fw uses an absolute value for this */ 138 cmd->bf_roaming_state = 139 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold); 140 } 141 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled); 142} 143 144static void iwl_mvm_power_log(struct iwl_mvm *mvm, 145 struct iwl_mac_power_cmd *cmd) 146{ 147 IWL_DEBUG_POWER(mvm, 148 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n", 149 cmd->id_and_color, iwlmvm_mod_params.power_scheme, 150 le16_to_cpu(cmd->flags)); 151 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", 152 le16_to_cpu(cmd->keep_alive_seconds)); 153 154 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) { 155 IWL_DEBUG_POWER(mvm, "Disable power management\n"); 156 return; 157 } 158 159 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n", 160 le32_to_cpu(cmd->rx_data_timeout)); 161 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n", 162 le32_to_cpu(cmd->tx_data_timeout)); 163 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) 164 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n", 165 cmd->skip_dtim_periods); 166 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 167 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n", 168 cmd->lprx_rssi_threshold); 169 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) { 170 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n"); 171 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n", 172 le32_to_cpu(cmd->rx_data_timeout_uapsd)); 173 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n", 174 le32_to_cpu(cmd->tx_data_timeout_uapsd)); 175 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid); 176 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags); 177 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp); 178 } 179} 180 181static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm, 182 struct ieee80211_vif *vif, 183 struct iwl_mac_power_cmd *cmd) 184{ 185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 186 enum ieee80211_ac_numbers ac; 187 bool tid_found = false; 188 189#ifdef CONFIG_IWLWIFI_DEBUGFS 190 /* set advanced pm flag with no uapsd ACs to enable ps-poll */ 191 if (mvmvif->dbgfs_pm.use_ps_poll) { 192 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 193 return; 194 } 195#endif 196 197 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) { 198 if (!mvmvif->queue_params[ac].uapsd) 199 continue; 200 201 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 202 cmd->flags |= 203 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 204 205 cmd->uapsd_ac_flags |= BIT(ac); 206 207 /* QNDP TID - the highest TID with no admission control */ 208 if (!tid_found && !mvmvif->queue_params[ac].acm) { 209 tid_found = true; 210 switch (ac) { 211 case IEEE80211_AC_VO: 212 cmd->qndp_tid = 6; 213 break; 214 case IEEE80211_AC_VI: 215 cmd->qndp_tid = 5; 216 break; 217 case IEEE80211_AC_BE: 218 cmd->qndp_tid = 0; 219 break; 220 case IEEE80211_AC_BK: 221 cmd->qndp_tid = 1; 222 break; 223 } 224 } 225 } 226 227 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK); 228 229 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) | 230 BIT(IEEE80211_AC_VI) | 231 BIT(IEEE80211_AC_BE) | 232 BIT(IEEE80211_AC_BK))) { 233 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 234 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL); 235 cmd->snooze_window = 236 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 237 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) : 238 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW); 239 } 240 241 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len; 242 243 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) || 244 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 245 cmd->rx_data_timeout_uapsd = 246 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 247 cmd->tx_data_timeout_uapsd = 248 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 249 } else { 250 cmd->rx_data_timeout_uapsd = 251 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT); 252 cmd->tx_data_timeout_uapsd = 253 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT); 254 } 255 256 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 257 cmd->heavy_tx_thld_packets = 258 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS; 259 cmd->heavy_rx_thld_packets = 260 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS; 261 } else { 262 cmd->heavy_tx_thld_packets = 263 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS; 264 cmd->heavy_rx_thld_packets = 265 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS; 266 } 267 cmd->heavy_tx_thld_percentage = 268 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT; 269 cmd->heavy_rx_thld_percentage = 270 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT; 271} 272 273static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac, 274 struct ieee80211_vif *vif) 275{ 276 bool *is_p2p_standalone = _data; 277 278 switch (ieee80211_vif_type_p2p(vif)) { 279 case NL80211_IFTYPE_P2P_GO: 280 case NL80211_IFTYPE_AP: 281 *is_p2p_standalone = false; 282 break; 283 case NL80211_IFTYPE_STATION: 284 if (vif->bss_conf.assoc) 285 *is_p2p_standalone = false; 286 break; 287 288 default: 289 break; 290 } 291} 292 293static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, 294 struct ieee80211_vif *vif) 295{ 296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 297 298 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 299 ETH_ALEN)) 300 return false; 301 302 /* 303 * Avoid using uAPSD if P2P client is associated to GO that uses 304 * opportunistic power save. This is due to current FW limitation. 305 */ 306 if (vif->p2p && 307 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow & 308 IEEE80211_P2P_OPPPS_ENABLE_BIT)) 309 return false; 310 311 /* 312 * Avoid using uAPSD if client is in DCM - 313 * low latency issue in Miracast 314 */ 315 if (iwl_mvm_phy_ctx_count(mvm) >= 2) 316 return false; 317 318 if (vif->p2p) { 319 /* Allow U-APSD only if p2p is stand alone */ 320 bool is_p2p_standalone = true; 321 322 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) 323 return false; 324 325 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 326 IEEE80211_IFACE_ITER_NORMAL, 327 iwl_mvm_p2p_standalone_iterator, 328 &is_p2p_standalone); 329 330 if (!is_p2p_standalone) 331 return false; 332 } 333 334 return true; 335} 336 337static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif) 338{ 339 struct ieee80211_chanctx_conf *chanctx_conf; 340 struct ieee80211_channel *chan; 341 bool radar_detect = false; 342 343 rcu_read_lock(); 344 chanctx_conf = rcu_dereference(vif->chanctx_conf); 345 WARN_ON(!chanctx_conf); 346 if (chanctx_conf) { 347 chan = chanctx_conf->def.chan; 348 radar_detect = chan->flags & IEEE80211_CHAN_RADAR; 349 } 350 rcu_read_unlock(); 351 352 return radar_detect; 353} 354 355static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 356 struct ieee80211_vif *vif, 357 struct iwl_mac_power_cmd *cmd) 358{ 359 int dtimper = vif->bss_conf.dtim_period ?: 1; 360 int skip; 361 362 /* disable, in case we're supposed to override */ 363 cmd->skip_dtim_periods = 0; 364 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 365 366 if (iwl_mvm_power_is_radar(vif)) 367 return; 368 369 if (dtimper >= 10) 370 return; 371 372 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 373 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 374 return; 375 skip = 2; 376 } else { 377 int dtimper_tu = dtimper * vif->bss_conf.beacon_int; 378 379 if (WARN_ON(!dtimper_tu)) 380 return; 381 /* configure skip over dtim up to 306TU - 314 msec */ 382 skip = max_t(u8, 1, 306 / dtimper_tu); 383 } 384 385 /* the firmware really expects "look at every X DTIMs", so add 1 */ 386 cmd->skip_dtim_periods = 1 + skip; 387 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 388} 389 390static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 391 struct ieee80211_vif *vif, 392 struct iwl_mac_power_cmd *cmd) 393{ 394 int dtimper, bi; 395 int keep_alive; 396 struct iwl_mvm_vif *mvmvif __maybe_unused = 397 iwl_mvm_vif_from_mac80211(vif); 398 399 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 400 mvmvif->color)); 401 dtimper = vif->bss_conf.dtim_period; 402 bi = vif->bss_conf.beacon_int; 403 404 /* 405 * Regardless of power management state the driver must set 406 * keep alive period. FW will use it for sending keep alive NDPs 407 * immediately after association. Check that keep alive period 408 * is at least 3 * DTIM 409 */ 410 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 411 USEC_PER_SEC); 412 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 413 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 414 415 if (mvm->ps_disabled) 416 return; 417 418 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 419 420 if (!vif->bss_conf.ps || !mvmvif->pm_enabled) 421 return; 422 423 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 424 (!fw_has_capa(&mvm->fw->ucode_capa, 425 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 426 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 427 return; 428 429 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 430 431 if (vif->bss_conf.beacon_rate && 432 (vif->bss_conf.beacon_rate->bitrate == 10 || 433 vif->bss_conf.beacon_rate->bitrate == 60)) { 434 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 435 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 436 } 437 438 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 439 440 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 441 cmd->rx_data_timeout = 442 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 443 cmd->tx_data_timeout = 444 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 445 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 446 fw_has_capa(&mvm->fw->ucode_capa, 447 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 448 cmd->tx_data_timeout = 449 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 450 cmd->rx_data_timeout = 451 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 452 } else { 453 cmd->rx_data_timeout = 454 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 455 cmd->tx_data_timeout = 456 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 457 } 458 459 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 460 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 461 462#ifdef CONFIG_IWLWIFI_DEBUGFS 463 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 464 cmd->keep_alive_seconds = 465 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 466 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 467 if (mvmvif->dbgfs_pm.skip_over_dtim) 468 cmd->flags |= 469 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 470 else 471 cmd->flags &= 472 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 473 } 474 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 475 cmd->rx_data_timeout = 476 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 477 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 478 cmd->tx_data_timeout = 479 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 480 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 481 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 482 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 483 if (mvmvif->dbgfs_pm.lprx_ena) 484 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 485 else 486 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 487 } 488 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 489 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 490 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 491 if (mvmvif->dbgfs_pm.snooze_ena) 492 cmd->flags |= 493 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 494 else 495 cmd->flags &= 496 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 497 } 498 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 499 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 500 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 501 cmd->flags |= cpu_to_le16(flag); 502 else 503 cmd->flags &= cpu_to_le16(flag); 504 } 505#endif /* CONFIG_IWLWIFI_DEBUGFS */ 506} 507 508static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 509 struct ieee80211_vif *vif) 510{ 511 struct iwl_mac_power_cmd cmd = {}; 512 513 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 514 iwl_mvm_power_log(mvm, &cmd); 515#ifdef CONFIG_IWLWIFI_DEBUGFS 516 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 517#endif 518 519 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 520 sizeof(cmd), &cmd); 521} 522 523int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 524{ 525 struct iwl_device_power_cmd cmd = { 526 .flags = 0, 527 }; 528 529 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 530 mvm->ps_disabled = true; 531 532 if (!mvm->ps_disabled) 533 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 534 535#ifdef CONFIG_IWLWIFI_DEBUGFS 536 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 537 mvm->disable_power_off_d3 : mvm->disable_power_off) 538 cmd.flags &= 539 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 540#endif 541 if (mvm->ext_clock_valid) 542 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 543 544 IWL_DEBUG_POWER(mvm, 545 "Sending device power command with flags = 0x%X\n", 546 cmd.flags); 547 548 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 549 &cmd); 550} 551 552void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 553{ 554 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 555 556 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid, 557 ETH_ALEN)) 558 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid); 559} 560 561static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 562 struct ieee80211_vif *vif) 563{ 564 u8 *ap_sta_id = _data; 565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 566 567 /* The ap_sta_id is not expected to change during current association 568 * so no explicit protection is needed 569 */ 570 if (mvmvif->ap_sta_id == *ap_sta_id) 571 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 572 ETH_ALEN); 573} 574 575void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 576 struct iwl_rx_cmd_buffer *rxb) 577{ 578 struct iwl_rx_packet *pkt = rxb_addr(rxb); 579 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 580 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 581 582 ieee80211_iterate_active_interfaces_atomic( 583 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 584 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 585} 586 587struct iwl_power_vifs { 588 struct iwl_mvm *mvm; 589 struct ieee80211_vif *bss_vif; 590 struct ieee80211_vif *p2p_vif; 591 struct ieee80211_vif *ap_vif; 592 struct ieee80211_vif *monitor_vif; 593 bool p2p_active; 594 bool bss_active; 595 bool ap_active; 596 bool monitor_active; 597}; 598 599static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 600 struct ieee80211_vif *vif) 601{ 602 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 603 604 mvmvif->pm_enabled = false; 605} 606 607static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 608 struct ieee80211_vif *vif) 609{ 610 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 611 bool *disable_ps = _data; 612 613 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX) 614 *disable_ps |= mvmvif->ps_disabled; 615} 616 617static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 618 struct ieee80211_vif *vif) 619{ 620 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 621 struct iwl_power_vifs *power_iterator = _data; 622 bool active = mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX; 623 624 if (!mvmvif->uploaded) 625 return; 626 627 switch (ieee80211_vif_type_p2p(vif)) { 628 case NL80211_IFTYPE_P2P_DEVICE: 629 break; 630 631 case NL80211_IFTYPE_P2P_GO: 632 case NL80211_IFTYPE_AP: 633 /* only a single MAC of the same type */ 634 WARN_ON(power_iterator->ap_vif); 635 power_iterator->ap_vif = vif; 636 if (active) 637 power_iterator->ap_active = true; 638 break; 639 640 case NL80211_IFTYPE_MONITOR: 641 /* only a single MAC of the same type */ 642 WARN_ON(power_iterator->monitor_vif); 643 power_iterator->monitor_vif = vif; 644 if (active) 645 power_iterator->monitor_active = true; 646 break; 647 648 case NL80211_IFTYPE_P2P_CLIENT: 649 /* only a single MAC of the same type */ 650 WARN_ON(power_iterator->p2p_vif); 651 power_iterator->p2p_vif = vif; 652 if (active) 653 power_iterator->p2p_active = true; 654 break; 655 656 case NL80211_IFTYPE_STATION: 657 power_iterator->bss_vif = vif; 658 if (active) 659 power_iterator->bss_active = true; 660 break; 661 662 default: 663 break; 664 } 665} 666 667static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 668 struct iwl_power_vifs *vifs) 669{ 670 struct iwl_mvm_vif *bss_mvmvif = NULL; 671 struct iwl_mvm_vif *p2p_mvmvif = NULL; 672 struct iwl_mvm_vif *ap_mvmvif = NULL; 673 bool client_same_channel = false; 674 bool ap_same_channel = false; 675 676 lockdep_assert_held(&mvm->mutex); 677 678 /* set pm_enable to false */ 679 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 680 IEEE80211_IFACE_ITER_NORMAL, 681 iwl_mvm_power_disable_pm_iterator, 682 NULL); 683 684 if (vifs->bss_vif) 685 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 686 687 if (vifs->p2p_vif) 688 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 689 690 if (vifs->ap_vif) 691 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 692 693 /* don't allow PM if any TDLS stations exist */ 694 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 695 return; 696 697 /* enable PM on bss if bss stand alone */ 698 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) { 699 bss_mvmvif->pm_enabled = true; 700 return; 701 } 702 703 /* enable PM on p2p if p2p stand alone */ 704 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) { 705 p2p_mvmvif->pm_enabled = true; 706 return; 707 } 708 709 if (vifs->bss_active && vifs->p2p_active) 710 client_same_channel = (bss_mvmvif->phy_ctxt->id == 711 p2p_mvmvif->phy_ctxt->id); 712 if (vifs->bss_active && vifs->ap_active) 713 ap_same_channel = (bss_mvmvif->phy_ctxt->id == 714 ap_mvmvif->phy_ctxt->id); 715 716 /* clients are not stand alone: enable PM if DCM */ 717 if (!(client_same_channel || ap_same_channel)) { 718 if (vifs->bss_active) 719 bss_mvmvif->pm_enabled = true; 720 if (vifs->p2p_active) 721 p2p_mvmvif->pm_enabled = true; 722 return; 723 } 724 725 /* 726 * There is only one channel in the system and there are only 727 * bss and p2p clients that share it 728 */ 729 if (client_same_channel && !vifs->ap_active) { 730 /* share same channel*/ 731 bss_mvmvif->pm_enabled = true; 732 p2p_mvmvif->pm_enabled = true; 733 } 734} 735 736#ifdef CONFIG_IWLWIFI_DEBUGFS 737int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 738 struct ieee80211_vif *vif, char *buf, 739 int bufsz) 740{ 741 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 742 struct iwl_mac_power_cmd cmd = {}; 743 int pos = 0; 744 745 mutex_lock(&mvm->mutex); 746 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 747 mutex_unlock(&mvm->mutex); 748 749 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 750 iwlmvm_mod_params.power_scheme); 751 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 752 le16_to_cpu(cmd.flags)); 753 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 754 le16_to_cpu(cmd.keep_alive_seconds)); 755 756 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 757 return pos; 758 759 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 760 (cmd.flags & 761 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 762 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 763 cmd.skip_dtim_periods); 764 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 765 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 766 le32_to_cpu(cmd.rx_data_timeout)); 767 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 768 le32_to_cpu(cmd.tx_data_timeout)); 769 } 770 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 771 pos += scnprintf(buf+pos, bufsz-pos, 772 "lprx_rssi_threshold = %d\n", 773 cmd.lprx_rssi_threshold); 774 775 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 776 return pos; 777 778 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 779 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 780 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 781 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 782 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 783 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 784 cmd.uapsd_ac_flags); 785 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 786 cmd.uapsd_max_sp); 787 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 788 cmd.heavy_tx_thld_packets); 789 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 790 cmd.heavy_rx_thld_packets); 791 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 792 cmd.heavy_tx_thld_percentage); 793 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 794 cmd.heavy_rx_thld_percentage); 795 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 796 (cmd.flags & 797 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 798 1 : 0); 799 800 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 801 return pos; 802 803 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 804 cmd.snooze_interval); 805 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 806 cmd.snooze_window); 807 808 return pos; 809} 810 811void 812iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 813 struct iwl_beacon_filter_cmd *cmd) 814{ 815 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 816 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 817 818 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 819 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 820 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 821 cmd->bf_roaming_energy_delta = 822 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 823 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 824 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 825 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 826 cmd->bf_temp_threshold = 827 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 828 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 829 cmd->bf_temp_fast_filter = 830 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 831 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 832 cmd->bf_temp_slow_filter = 833 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 834 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 835 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 836 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 837 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 838 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 839 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 840 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 841 cmd->ba_enable_beacon_abort = 842 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 843} 844#endif 845 846static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 847 struct ieee80211_vif *vif, 848 struct iwl_beacon_filter_cmd *cmd, 849 u32 cmd_flags) 850{ 851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 852 int ret; 853 854 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 855 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 856 return 0; 857 858 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 859 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 860 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 861 862 if (!ret) 863 mvmvif->bf_data.bf_enabled = true; 864 865 return ret; 866} 867 868int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 869 struct ieee80211_vif *vif, 870 u32 flags) 871{ 872 struct iwl_beacon_filter_cmd cmd = { 873 IWL_BF_CMD_CONFIG_DEFAULTS, 874 .bf_enable_beacon_filter = cpu_to_le32(1), 875 }; 876 877 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 878} 879 880static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 881 struct ieee80211_vif *vif, 882 u32 flags) 883{ 884 struct iwl_beacon_filter_cmd cmd = {}; 885 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 886 int ret; 887 888 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 889 return 0; 890 891 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 892 893 if (!ret) 894 mvmvif->bf_data.bf_enabled = false; 895 896 return ret; 897} 898 899int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 900 struct ieee80211_vif *vif, 901 u32 flags) 902{ 903 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 904} 905 906static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 907{ 908 bool disable_ps; 909 int ret; 910 911 /* disable PS if CAM */ 912 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 913 /* ...or if any of the vifs require PS to be off */ 914 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 915 IEEE80211_IFACE_ITER_NORMAL, 916 iwl_mvm_power_ps_disabled_iterator, 917 &disable_ps); 918 919 /* update device power state if it has changed */ 920 if (mvm->ps_disabled != disable_ps) { 921 bool old_ps_disabled = mvm->ps_disabled; 922 923 mvm->ps_disabled = disable_ps; 924 ret = iwl_mvm_power_update_device(mvm); 925 if (ret) { 926 mvm->ps_disabled = old_ps_disabled; 927 return ret; 928 } 929 } 930 931 return 0; 932} 933 934static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 935 struct ieee80211_vif *vif) 936{ 937 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 938 struct iwl_beacon_filter_cmd cmd = { 939 IWL_BF_CMD_CONFIG_DEFAULTS, 940 .bf_enable_beacon_filter = cpu_to_le32(1), 941 }; 942 943 if (!mvmvif->bf_data.bf_enabled) 944 return 0; 945 946 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 947 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 948 949 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 950 mvm->ps_disabled || 951 !vif->bss_conf.ps || 952 iwl_mvm_vif_low_latency(mvmvif)); 953 954 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 955} 956 957int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 958{ 959 struct iwl_power_vifs vifs = { 960 .mvm = mvm, 961 }; 962 int ret; 963 964 lockdep_assert_held(&mvm->mutex); 965 966 /* get vifs info */ 967 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 968 IEEE80211_IFACE_ITER_NORMAL, 969 iwl_mvm_power_get_vifs_iterator, &vifs); 970 971 ret = iwl_mvm_power_set_ps(mvm); 972 if (ret) 973 return ret; 974 975 if (vifs.bss_vif) 976 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 977 978 return 0; 979} 980 981int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 982{ 983 struct iwl_power_vifs vifs = { 984 .mvm = mvm, 985 }; 986 int ret; 987 988 lockdep_assert_held(&mvm->mutex); 989 990 /* get vifs info */ 991 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 992 IEEE80211_IFACE_ITER_NORMAL, 993 iwl_mvm_power_get_vifs_iterator, &vifs); 994 995 iwl_mvm_power_set_pm(mvm, &vifs); 996 997 ret = iwl_mvm_power_set_ps(mvm); 998 if (ret) 999 return ret; 1000 1001 if (vifs.bss_vif) { 1002 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 1003 if (ret) 1004 return ret; 1005 } 1006 1007 if (vifs.p2p_vif) { 1008 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 1009 if (ret) 1010 return ret; 1011 } 1012 1013 if (vifs.bss_vif) 1014 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 1015 1016 return 0; 1017} 1018