1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright (C) 2018 - 2019 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 34 * Copyright (C) 2018 - 2019 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 65 #include <linux/kernel.h> 66 #include <linux/module.h> 67 #include <linux/slab.h> 68 #include <linux/etherdevice.h> 69 70 #include <net/mac80211.h> 71 72 #include "iwl-debug.h" 73 #include "mvm.h" 74 #include "iwl-modparams.h" 75 #include "fw/api/power.h" 76 77 #define POWER_KEEP_ALIVE_PERIOD_SEC 25 78 79 static 80 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm, 81 struct iwl_beacon_filter_cmd *cmd, 82 u32 flags) 83 { 84 u16 len; 85 86 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n", 87 le32_to_cpu(cmd->ba_enable_beacon_abort)); 88 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n", 89 le32_to_cpu(cmd->ba_escape_timer)); 90 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n", 91 le32_to_cpu(cmd->bf_debug_flag)); 92 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n", 93 le32_to_cpu(cmd->bf_enable_beacon_filter)); 94 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n", 95 le32_to_cpu(cmd->bf_energy_delta)); 96 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n", 97 le32_to_cpu(cmd->bf_escape_timer)); 98 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n", 99 le32_to_cpu(cmd->bf_roaming_energy_delta)); 100 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n", 101 le32_to_cpu(cmd->bf_roaming_state)); 102 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n", 103 le32_to_cpu(cmd->bf_temp_threshold)); 104 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n", 105 le32_to_cpu(cmd->bf_temp_fast_filter)); 106 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n", 107 le32_to_cpu(cmd->bf_temp_slow_filter)); 108 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n", 109 le32_to_cpu(cmd->bf_threshold_absolute_low[0]), 110 le32_to_cpu(cmd->bf_threshold_absolute_low[1])); 111 112 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n", 113 le32_to_cpu(cmd->bf_threshold_absolute_high[0]), 114 le32_to_cpu(cmd->bf_threshold_absolute_high[1])); 115 116 if (fw_has_api(&mvm->fw->ucode_capa, 117 IWL_UCODE_TLV_API_BEACON_FILTER_V4)) 118 len = sizeof(struct iwl_beacon_filter_cmd); 119 else 120 len = offsetof(struct iwl_beacon_filter_cmd, 121 bf_threshold_absolute_low); 122 123 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags, 124 len, cmd); 125 } 126 127 static 128 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm, 129 struct ieee80211_vif *vif, 130 struct iwl_beacon_filter_cmd *cmd) 131 { 132 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 133 134 if (vif->bss_conf.cqm_rssi_thold) { 135 cmd->bf_energy_delta = 136 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst); 137 /* fw uses an absolute value for this */ 138 cmd->bf_roaming_state = 139 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold); 140 } 141 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled); 142 } 143 144 static void iwl_mvm_power_log(struct iwl_mvm *mvm, 145 struct iwl_mac_power_cmd *cmd) 146 { 147 IWL_DEBUG_POWER(mvm, 148 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n", 149 cmd->id_and_color, iwlmvm_mod_params.power_scheme, 150 le16_to_cpu(cmd->flags)); 151 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", 152 le16_to_cpu(cmd->keep_alive_seconds)); 153 154 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) { 155 IWL_DEBUG_POWER(mvm, "Disable power management\n"); 156 return; 157 } 158 159 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n", 160 le32_to_cpu(cmd->rx_data_timeout)); 161 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n", 162 le32_to_cpu(cmd->tx_data_timeout)); 163 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) 164 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n", 165 cmd->skip_dtim_periods); 166 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 167 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n", 168 cmd->lprx_rssi_threshold); 169 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) { 170 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n"); 171 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n", 172 le32_to_cpu(cmd->rx_data_timeout_uapsd)); 173 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n", 174 le32_to_cpu(cmd->tx_data_timeout_uapsd)); 175 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid); 176 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags); 177 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp); 178 } 179 } 180 181 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm, 182 struct ieee80211_vif *vif, 183 struct iwl_mac_power_cmd *cmd) 184 { 185 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 186 enum ieee80211_ac_numbers ac; 187 bool tid_found = false; 188 189 #ifdef CONFIG_IWLWIFI_DEBUGFS 190 /* set advanced pm flag with no uapsd ACs to enable ps-poll */ 191 if (mvmvif->dbgfs_pm.use_ps_poll) { 192 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 193 return; 194 } 195 #endif 196 197 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) { 198 if (!mvmvif->queue_params[ac].uapsd) 199 continue; 200 201 if (mvm->fwrt.cur_fw_img != IWL_UCODE_WOWLAN) 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 (mvm->fwrt.cur_fw_img == IWL_UCODE_WOWLAN) ? 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 (mvm->fwrt.cur_fw_img == IWL_UCODE_WOWLAN || cmd->flags & 244 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 245 cmd->rx_data_timeout_uapsd = 246 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 247 cmd->tx_data_timeout_uapsd = 248 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 249 } else { 250 cmd->rx_data_timeout_uapsd = 251 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT); 252 cmd->tx_data_timeout_uapsd = 253 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT); 254 } 255 256 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 257 cmd->heavy_tx_thld_packets = 258 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS; 259 cmd->heavy_rx_thld_packets = 260 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS; 261 } else { 262 cmd->heavy_tx_thld_packets = 263 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS; 264 cmd->heavy_rx_thld_packets = 265 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS; 266 } 267 cmd->heavy_tx_thld_percentage = 268 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT; 269 cmd->heavy_rx_thld_percentage = 270 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT; 271 } 272 273 static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac, 274 struct ieee80211_vif *vif) 275 { 276 bool *is_p2p_standalone = _data; 277 278 switch (ieee80211_vif_type_p2p(vif)) { 279 case NL80211_IFTYPE_P2P_GO: 280 case NL80211_IFTYPE_AP: 281 *is_p2p_standalone = false; 282 break; 283 case NL80211_IFTYPE_STATION: 284 if (vif->bss_conf.assoc) 285 *is_p2p_standalone = false; 286 break; 287 288 default: 289 break; 290 } 291 } 292 293 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, 294 struct ieee80211_vif *vif) 295 { 296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 297 298 if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 299 ETH_ALEN)) 300 return false; 301 302 /* 303 * Avoid using uAPSD if P2P client is associated to GO that uses 304 * opportunistic power save. This is due to current FW limitation. 305 */ 306 if (vif->p2p && 307 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow & 308 IEEE80211_P2P_OPPPS_ENABLE_BIT)) 309 return false; 310 311 /* 312 * Avoid using uAPSD if client is in DCM - 313 * low latency issue in Miracast 314 */ 315 if (iwl_mvm_phy_ctx_count(mvm) >= 2) 316 return false; 317 318 if (vif->p2p) { 319 /* Allow U-APSD only if p2p is stand alone */ 320 bool is_p2p_standalone = true; 321 322 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) 323 return false; 324 325 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 326 IEEE80211_IFACE_ITER_NORMAL, 327 iwl_mvm_p2p_standalone_iterator, 328 &is_p2p_standalone); 329 330 if (!is_p2p_standalone) 331 return false; 332 } 333 334 return true; 335 } 336 337 static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif) 338 { 339 struct ieee80211_chanctx_conf *chanctx_conf; 340 struct ieee80211_channel *chan; 341 bool radar_detect = false; 342 343 rcu_read_lock(); 344 chanctx_conf = rcu_dereference(vif->chanctx_conf); 345 WARN_ON(!chanctx_conf); 346 if (chanctx_conf) { 347 chan = chanctx_conf->def.chan; 348 radar_detect = chan->flags & IEEE80211_CHAN_RADAR; 349 } 350 rcu_read_unlock(); 351 352 return radar_detect; 353 } 354 355 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 356 struct ieee80211_vif *vif, 357 struct iwl_mac_power_cmd *cmd, 358 bool host_awake) 359 { 360 int dtimper = vif->bss_conf.dtim_period ?: 1; 361 int skip; 362 363 /* disable, in case we're supposed to override */ 364 cmd->skip_dtim_periods = 0; 365 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 366 367 if (iwl_mvm_power_is_radar(vif)) 368 return; 369 370 if (dtimper >= 10) 371 return; 372 373 /* TODO: check that multicast wake lock is off */ 374 375 if (host_awake) { 376 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 377 return; 378 skip = 2; 379 } else { 380 int dtimper_tu = dtimper * vif->bss_conf.beacon_int; 381 382 if (WARN_ON(!dtimper_tu)) 383 return; 384 /* configure skip over dtim up to 306TU - 314 msec */ 385 skip = max_t(u8, 1, 306 / dtimper_tu); 386 } 387 388 /* the firmware really expects "look at every X DTIMs", so add 1 */ 389 cmd->skip_dtim_periods = 1 + skip; 390 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 391 } 392 393 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 394 struct ieee80211_vif *vif, 395 struct iwl_mac_power_cmd *cmd, 396 bool host_awake) 397 { 398 int dtimper, bi; 399 int keep_alive; 400 struct iwl_mvm_vif *mvmvif __maybe_unused = 401 iwl_mvm_vif_from_mac80211(vif); 402 403 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 404 mvmvif->color)); 405 dtimper = vif->bss_conf.dtim_period; 406 bi = vif->bss_conf.beacon_int; 407 408 /* 409 * Regardless of power management state the driver must set 410 * keep alive period. FW will use it for sending keep alive NDPs 411 * immediately after association. Check that keep alive period 412 * is at least 3 * DTIM 413 */ 414 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 415 USEC_PER_SEC); 416 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 417 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 418 419 if (mvm->ps_disabled) 420 return; 421 422 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 423 424 if (!vif->bss_conf.ps || !mvmvif->pm_enabled) 425 return; 426 427 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 428 (!fw_has_capa(&mvm->fw->ucode_capa, 429 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 430 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 431 return; 432 433 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 434 435 if (vif->bss_conf.beacon_rate && 436 (vif->bss_conf.beacon_rate->bitrate == 10 || 437 vif->bss_conf.beacon_rate->bitrate == 60)) { 438 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 439 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 440 } 441 442 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd, host_awake); 443 444 if (!host_awake) { 445 cmd->rx_data_timeout = 446 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 447 cmd->tx_data_timeout = 448 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 449 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 450 fw_has_capa(&mvm->fw->ucode_capa, 451 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 452 cmd->tx_data_timeout = 453 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 454 cmd->rx_data_timeout = 455 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 456 } else { 457 cmd->rx_data_timeout = 458 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 459 cmd->tx_data_timeout = 460 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 461 } 462 463 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 464 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 465 466 #ifdef CONFIG_IWLWIFI_DEBUGFS 467 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 468 cmd->keep_alive_seconds = 469 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 470 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 471 if (mvmvif->dbgfs_pm.skip_over_dtim) 472 cmd->flags |= 473 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 474 else 475 cmd->flags &= 476 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 477 } 478 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 479 cmd->rx_data_timeout = 480 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 481 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 482 cmd->tx_data_timeout = 483 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 484 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 485 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 486 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 487 if (mvmvif->dbgfs_pm.lprx_ena) 488 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 489 else 490 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 491 } 492 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 493 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 494 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 495 if (mvmvif->dbgfs_pm.snooze_ena) 496 cmd->flags |= 497 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 498 else 499 cmd->flags &= 500 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 501 } 502 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 503 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 504 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 505 cmd->flags |= cpu_to_le16(flag); 506 else 507 cmd->flags &= cpu_to_le16(flag); 508 } 509 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 510 } 511 512 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 513 struct ieee80211_vif *vif) 514 { 515 struct iwl_mac_power_cmd cmd = {}; 516 517 iwl_mvm_power_build_cmd(mvm, vif, &cmd, 518 mvm->fwrt.cur_fw_img != IWL_UCODE_WOWLAN); 519 iwl_mvm_power_log(mvm, &cmd); 520 #ifdef CONFIG_IWLWIFI_DEBUGFS 521 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 522 #endif 523 524 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 525 sizeof(cmd), &cmd); 526 } 527 528 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 529 { 530 struct iwl_device_power_cmd cmd = { 531 .flags = 0, 532 }; 533 534 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 535 mvm->ps_disabled = true; 536 537 if (!mvm->ps_disabled) 538 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 539 540 #ifdef CONFIG_IWLWIFI_DEBUGFS 541 if ((mvm->fwrt.cur_fw_img == IWL_UCODE_WOWLAN) ? 542 mvm->disable_power_off_d3 : mvm->disable_power_off) 543 cmd.flags &= 544 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 545 #endif 546 if (mvm->ext_clock_valid) 547 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 548 549 IWL_DEBUG_POWER(mvm, 550 "Sending device power command with flags = 0x%X\n", 551 cmd.flags); 552 553 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 554 &cmd); 555 } 556 557 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 558 { 559 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 560 561 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid, 562 ETH_ALEN)) 563 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid); 564 } 565 566 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 567 struct ieee80211_vif *vif) 568 { 569 u8 *ap_sta_id = _data; 570 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 571 572 /* The ap_sta_id is not expected to change during current association 573 * so no explicit protection is needed 574 */ 575 if (mvmvif->ap_sta_id == *ap_sta_id) 576 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 577 ETH_ALEN); 578 } 579 580 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 581 struct iwl_rx_cmd_buffer *rxb) 582 { 583 struct iwl_rx_packet *pkt = rxb_addr(rxb); 584 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 585 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 586 587 ieee80211_iterate_active_interfaces_atomic( 588 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 589 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 590 } 591 592 struct iwl_power_vifs { 593 struct iwl_mvm *mvm; 594 struct ieee80211_vif *bss_vif; 595 struct ieee80211_vif *p2p_vif; 596 struct ieee80211_vif *ap_vif; 597 struct ieee80211_vif *monitor_vif; 598 bool p2p_active; 599 bool bss_active; 600 bool ap_active; 601 bool monitor_active; 602 }; 603 604 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 605 struct ieee80211_vif *vif) 606 { 607 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 608 609 mvmvif->pm_enabled = false; 610 } 611 612 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 613 struct ieee80211_vif *vif) 614 { 615 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 616 bool *disable_ps = _data; 617 618 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX) 619 *disable_ps |= mvmvif->ps_disabled; 620 } 621 622 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 623 struct ieee80211_vif *vif) 624 { 625 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 626 struct iwl_power_vifs *power_iterator = _data; 627 bool active = mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX; 628 629 switch (ieee80211_vif_type_p2p(vif)) { 630 case NL80211_IFTYPE_P2P_DEVICE: 631 break; 632 633 case NL80211_IFTYPE_P2P_GO: 634 case NL80211_IFTYPE_AP: 635 /* only a single MAC of the same type */ 636 WARN_ON(power_iterator->ap_vif); 637 power_iterator->ap_vif = vif; 638 if (active) 639 power_iterator->ap_active = true; 640 break; 641 642 case NL80211_IFTYPE_MONITOR: 643 /* only a single MAC of the same type */ 644 WARN_ON(power_iterator->monitor_vif); 645 power_iterator->monitor_vif = vif; 646 if (active) 647 power_iterator->monitor_active = true; 648 break; 649 650 case NL80211_IFTYPE_P2P_CLIENT: 651 /* only a single MAC of the same type */ 652 WARN_ON(power_iterator->p2p_vif); 653 power_iterator->p2p_vif = vif; 654 if (active) 655 power_iterator->p2p_active = true; 656 break; 657 658 case NL80211_IFTYPE_STATION: 659 power_iterator->bss_vif = vif; 660 if (active) 661 power_iterator->bss_active = true; 662 break; 663 664 default: 665 break; 666 } 667 } 668 669 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 670 struct iwl_power_vifs *vifs) 671 { 672 struct iwl_mvm_vif *bss_mvmvif = NULL; 673 struct iwl_mvm_vif *p2p_mvmvif = NULL; 674 struct iwl_mvm_vif *ap_mvmvif = NULL; 675 bool client_same_channel = false; 676 bool ap_same_channel = false; 677 678 lockdep_assert_held(&mvm->mutex); 679 680 /* set pm_enable to false */ 681 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 682 IEEE80211_IFACE_ITER_NORMAL, 683 iwl_mvm_power_disable_pm_iterator, 684 NULL); 685 686 if (vifs->bss_vif) 687 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 688 689 if (vifs->p2p_vif) 690 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 691 692 if (vifs->ap_vif) 693 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 694 695 /* don't allow PM if any TDLS stations exist */ 696 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 697 return; 698 699 /* enable PM on bss if bss stand alone */ 700 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) { 701 bss_mvmvif->pm_enabled = true; 702 return; 703 } 704 705 /* enable PM on p2p if p2p stand alone */ 706 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) { 707 p2p_mvmvif->pm_enabled = true; 708 return; 709 } 710 711 if (vifs->bss_active && vifs->p2p_active) 712 client_same_channel = (bss_mvmvif->phy_ctxt->id == 713 p2p_mvmvif->phy_ctxt->id); 714 if (vifs->bss_active && vifs->ap_active) 715 ap_same_channel = (bss_mvmvif->phy_ctxt->id == 716 ap_mvmvif->phy_ctxt->id); 717 718 /* clients are not stand alone: enable PM if DCM */ 719 if (!(client_same_channel || ap_same_channel)) { 720 if (vifs->bss_active) 721 bss_mvmvif->pm_enabled = true; 722 if (vifs->p2p_active) 723 p2p_mvmvif->pm_enabled = true; 724 return; 725 } 726 727 /* 728 * There is only one channel in the system and there are only 729 * bss and p2p clients that share it 730 */ 731 if (client_same_channel && !vifs->ap_active) { 732 /* share same channel*/ 733 bss_mvmvif->pm_enabled = true; 734 p2p_mvmvif->pm_enabled = true; 735 } 736 } 737 738 #ifdef CONFIG_IWLWIFI_DEBUGFS 739 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 740 struct ieee80211_vif *vif, char *buf, 741 int bufsz) 742 { 743 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 744 struct iwl_mac_power_cmd cmd = {}; 745 int pos = 0; 746 747 mutex_lock(&mvm->mutex); 748 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 749 mutex_unlock(&mvm->mutex); 750 751 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 752 iwlmvm_mod_params.power_scheme); 753 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 754 le16_to_cpu(cmd.flags)); 755 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 756 le16_to_cpu(cmd.keep_alive_seconds)); 757 758 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 759 return pos; 760 761 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 762 (cmd.flags & 763 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 764 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 765 cmd.skip_dtim_periods); 766 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 767 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 768 le32_to_cpu(cmd.rx_data_timeout)); 769 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 770 le32_to_cpu(cmd.tx_data_timeout)); 771 } 772 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 773 pos += scnprintf(buf+pos, bufsz-pos, 774 "lprx_rssi_threshold = %d\n", 775 cmd.lprx_rssi_threshold); 776 777 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 778 return pos; 779 780 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 781 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 782 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 783 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 784 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 785 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 786 cmd.uapsd_ac_flags); 787 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 788 cmd.uapsd_max_sp); 789 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 790 cmd.heavy_tx_thld_packets); 791 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 792 cmd.heavy_rx_thld_packets); 793 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 794 cmd.heavy_tx_thld_percentage); 795 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 796 cmd.heavy_rx_thld_percentage); 797 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 798 (cmd.flags & 799 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 800 1 : 0); 801 802 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 803 return pos; 804 805 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 806 cmd.snooze_interval); 807 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 808 cmd.snooze_window); 809 810 return pos; 811 } 812 813 void 814 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 815 struct iwl_beacon_filter_cmd *cmd) 816 { 817 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 818 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 819 820 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 821 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 822 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 823 cmd->bf_roaming_energy_delta = 824 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 825 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 826 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 827 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 828 cmd->bf_temp_threshold = 829 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 830 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 831 cmd->bf_temp_fast_filter = 832 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 833 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 834 cmd->bf_temp_slow_filter = 835 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 836 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 837 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 838 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 839 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 840 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 841 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 842 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 843 cmd->ba_enable_beacon_abort = 844 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 845 } 846 #endif 847 848 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 849 struct ieee80211_vif *vif, 850 struct iwl_beacon_filter_cmd *cmd, 851 u32 cmd_flags) 852 { 853 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 854 int ret; 855 856 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 857 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 858 return 0; 859 860 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 861 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 862 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 863 864 if (!ret) 865 mvmvif->bf_data.bf_enabled = true; 866 867 return ret; 868 } 869 870 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 871 struct ieee80211_vif *vif, 872 u32 flags) 873 { 874 struct iwl_beacon_filter_cmd cmd = { 875 IWL_BF_CMD_CONFIG_DEFAULTS, 876 .bf_enable_beacon_filter = cpu_to_le32(1), 877 }; 878 879 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 880 } 881 882 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 883 struct ieee80211_vif *vif, 884 u32 flags) 885 { 886 struct iwl_beacon_filter_cmd cmd = {}; 887 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 888 int ret; 889 890 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 891 return 0; 892 893 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 894 895 if (!ret) 896 mvmvif->bf_data.bf_enabled = false; 897 898 return ret; 899 } 900 901 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 902 struct ieee80211_vif *vif, 903 u32 flags) 904 { 905 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 906 } 907 908 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 909 { 910 bool disable_ps; 911 int ret; 912 913 /* disable PS if CAM */ 914 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 915 /* ...or if any of the vifs require PS to be off */ 916 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 917 IEEE80211_IFACE_ITER_NORMAL, 918 iwl_mvm_power_ps_disabled_iterator, 919 &disable_ps); 920 921 /* update device power state if it has changed */ 922 if (mvm->ps_disabled != disable_ps) { 923 bool old_ps_disabled = mvm->ps_disabled; 924 925 mvm->ps_disabled = disable_ps; 926 ret = iwl_mvm_power_update_device(mvm); 927 if (ret) { 928 mvm->ps_disabled = old_ps_disabled; 929 return ret; 930 } 931 } 932 933 return 0; 934 } 935 936 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 937 struct ieee80211_vif *vif) 938 { 939 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 940 struct iwl_beacon_filter_cmd cmd = { 941 IWL_BF_CMD_CONFIG_DEFAULTS, 942 .bf_enable_beacon_filter = cpu_to_le32(1), 943 }; 944 945 if (!mvmvif->bf_data.bf_enabled) 946 return 0; 947 948 if (mvm->fwrt.cur_fw_img == IWL_UCODE_WOWLAN) 949 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 950 951 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 952 mvm->ps_disabled || 953 !vif->bss_conf.ps || 954 iwl_mvm_vif_low_latency(mvmvif)); 955 956 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 957 } 958 959 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 960 { 961 struct iwl_power_vifs vifs = { 962 .mvm = mvm, 963 }; 964 int ret; 965 966 lockdep_assert_held(&mvm->mutex); 967 968 /* get vifs info */ 969 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 970 IEEE80211_IFACE_ITER_NORMAL, 971 iwl_mvm_power_get_vifs_iterator, &vifs); 972 973 ret = iwl_mvm_power_set_ps(mvm); 974 if (ret) 975 return ret; 976 977 if (vifs.bss_vif) 978 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 979 980 return 0; 981 } 982 983 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 984 { 985 struct iwl_power_vifs vifs = { 986 .mvm = mvm, 987 }; 988 int ret; 989 990 lockdep_assert_held(&mvm->mutex); 991 992 /* get vifs info */ 993 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 994 IEEE80211_IFACE_ITER_NORMAL, 995 iwl_mvm_power_get_vifs_iterator, &vifs); 996 997 iwl_mvm_power_set_pm(mvm, &vifs); 998 999 ret = iwl_mvm_power_set_ps(mvm); 1000 if (ret) 1001 return ret; 1002 1003 if (vifs.bss_vif) { 1004 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 1005 if (ret) 1006 return ret; 1007 } 1008 1009 if (vifs.p2p_vif) { 1010 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 1011 if (ret) 1012 return ret; 1013 } 1014 1015 if (vifs.bss_vif) 1016 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 1017 1018 return 0; 1019 } 1020