1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2019, 2021-2025 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 21 static 22 int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm, 23 struct iwl_beacon_filter_cmd *cmd) 24 { 25 u16 len; 26 27 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n", 28 le32_to_cpu(cmd->ba_enable_beacon_abort)); 29 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n", 30 le32_to_cpu(cmd->ba_escape_timer)); 31 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n", 32 le32_to_cpu(cmd->bf_debug_flag)); 33 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n", 34 le32_to_cpu(cmd->bf_enable_beacon_filter)); 35 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n", 36 le32_to_cpu(cmd->bf_energy_delta)); 37 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n", 38 le32_to_cpu(cmd->bf_escape_timer)); 39 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n", 40 le32_to_cpu(cmd->bf_roaming_energy_delta)); 41 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n", 42 le32_to_cpu(cmd->bf_roaming_state)); 43 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n", 44 le32_to_cpu(cmd->bf_temp_threshold)); 45 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n", 46 le32_to_cpu(cmd->bf_temp_fast_filter)); 47 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n", 48 le32_to_cpu(cmd->bf_temp_slow_filter)); 49 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n", 50 le32_to_cpu(cmd->bf_threshold_absolute_low[0]), 51 le32_to_cpu(cmd->bf_threshold_absolute_low[1])); 52 53 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n", 54 le32_to_cpu(cmd->bf_threshold_absolute_high[0]), 55 le32_to_cpu(cmd->bf_threshold_absolute_high[1])); 56 57 if (fw_has_api(&mvm->fw->ucode_capa, 58 IWL_UCODE_TLV_API_BEACON_FILTER_V4)) 59 len = sizeof(struct iwl_beacon_filter_cmd); 60 else 61 len = offsetof(struct iwl_beacon_filter_cmd, 62 bf_threshold_absolute_low); 63 64 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, 0, 65 len, cmd); 66 } 67 68 static 69 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm, 70 struct ieee80211_vif *vif, 71 struct iwl_beacon_filter_cmd *cmd) 72 { 73 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 74 75 if (vif->bss_conf.cqm_rssi_thold) { 76 cmd->bf_energy_delta = 77 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst); 78 /* fw uses an absolute value for this */ 79 cmd->bf_roaming_state = 80 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold); 81 } 82 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->ba_enabled); 83 } 84 85 static void iwl_mvm_power_log(struct iwl_mvm *mvm, 86 struct iwl_mac_power_cmd *cmd) 87 { 88 IWL_DEBUG_POWER(mvm, 89 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n", 90 cmd->id_and_color, iwlmvm_mod_params.power_scheme, 91 le16_to_cpu(cmd->flags)); 92 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", 93 le16_to_cpu(cmd->keep_alive_seconds)); 94 95 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) { 96 IWL_DEBUG_POWER(mvm, "Disable power management\n"); 97 return; 98 } 99 100 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n", 101 le32_to_cpu(cmd->rx_data_timeout)); 102 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n", 103 le32_to_cpu(cmd->tx_data_timeout)); 104 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) 105 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n", 106 cmd->skip_dtim_periods); 107 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 108 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n", 109 cmd->lprx_rssi_threshold); 110 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) { 111 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n"); 112 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n", 113 le32_to_cpu(cmd->rx_data_timeout_uapsd)); 114 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n", 115 le32_to_cpu(cmd->tx_data_timeout_uapsd)); 116 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid); 117 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags); 118 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp); 119 } 120 } 121 122 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm, 123 struct ieee80211_vif *vif, 124 struct iwl_mac_power_cmd *cmd) 125 { 126 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 127 enum ieee80211_ac_numbers ac; 128 bool tid_found = false; 129 130 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) || 131 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 132 cmd->rx_data_timeout_uapsd = 133 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 134 cmd->tx_data_timeout_uapsd = 135 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 136 } else { 137 cmd->rx_data_timeout_uapsd = 138 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT); 139 cmd->tx_data_timeout_uapsd = 140 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT); 141 } 142 143 #ifdef CONFIG_IWLWIFI_DEBUGFS 144 /* set advanced pm flag with no uapsd ACs to enable ps-poll */ 145 if (mvmvif->dbgfs_pm.use_ps_poll) { 146 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 147 return; 148 } 149 #endif 150 151 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) { 152 if (!mvmvif->deflink.queue_params[ac].uapsd) 153 continue; 154 155 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 156 cmd->flags |= 157 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 158 159 cmd->uapsd_ac_flags |= BIT(ac); 160 161 /* QNDP TID - the highest TID with no admission control */ 162 if (!tid_found && !mvmvif->deflink.queue_params[ac].acm) { 163 tid_found = true; 164 switch (ac) { 165 case IEEE80211_AC_VO: 166 cmd->qndp_tid = 6; 167 break; 168 case IEEE80211_AC_VI: 169 cmd->qndp_tid = 5; 170 break; 171 case IEEE80211_AC_BE: 172 cmd->qndp_tid = 0; 173 break; 174 case IEEE80211_AC_BK: 175 cmd->qndp_tid = 1; 176 break; 177 } 178 } 179 } 180 181 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK); 182 183 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) | 184 BIT(IEEE80211_AC_VI) | 185 BIT(IEEE80211_AC_BE) | 186 BIT(IEEE80211_AC_BK))) { 187 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 188 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL); 189 cmd->snooze_window = 190 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 191 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) : 192 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW); 193 } 194 195 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len; 196 197 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 198 cmd->heavy_tx_thld_packets = 199 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS; 200 cmd->heavy_rx_thld_packets = 201 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS; 202 } else { 203 cmd->heavy_tx_thld_packets = 204 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS; 205 cmd->heavy_rx_thld_packets = 206 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS; 207 } 208 cmd->heavy_tx_thld_percentage = 209 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT; 210 cmd->heavy_rx_thld_percentage = 211 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT; 212 } 213 214 struct iwl_allow_uapsd_iface_iterator_data { 215 struct ieee80211_vif *current_vif; 216 bool allow_uapsd; 217 }; 218 219 static void iwl_mvm_allow_uapsd_iterator(void *_data, u8 *mac, 220 struct ieee80211_vif *vif) 221 { 222 struct iwl_allow_uapsd_iface_iterator_data *data = _data; 223 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 224 struct iwl_mvm_vif *curr_mvmvif = 225 iwl_mvm_vif_from_mac80211(data->current_vif); 226 227 /* exclude the given vif */ 228 if (vif == data->current_vif) 229 return; 230 231 switch (vif->type) { 232 case NL80211_IFTYPE_AP: 233 case NL80211_IFTYPE_ADHOC: 234 case NL80211_IFTYPE_NAN: 235 data->allow_uapsd = false; 236 break; 237 case NL80211_IFTYPE_STATION: 238 /* allow UAPSD if P2P interface and BSS station interface share 239 * the same channel. 240 */ 241 if (vif->cfg.assoc && other_mvmvif->deflink.phy_ctxt && 242 curr_mvmvif->deflink.phy_ctxt && 243 other_mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 244 data->allow_uapsd = false; 245 break; 246 247 default: 248 break; 249 } 250 } 251 252 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, 253 struct ieee80211_vif *vif) 254 { 255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 256 struct iwl_allow_uapsd_iface_iterator_data data = { 257 .current_vif = vif, 258 .allow_uapsd = true, 259 }; 260 261 if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 262 vif->cfg.ap_addr)) 263 return false; 264 265 /* 266 * Avoid using uAPSD if P2P client is associated to GO that uses 267 * opportunistic power save. This is due to current FW limitation. 268 */ 269 if (vif->p2p && 270 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow & 271 IEEE80211_P2P_OPPPS_ENABLE_BIT)) 272 return false; 273 274 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) 275 return false; 276 277 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 278 IEEE80211_IFACE_ITER_NORMAL, 279 iwl_mvm_allow_uapsd_iterator, 280 &data); 281 282 return data.allow_uapsd; 283 } 284 285 static bool iwl_mvm_power_is_radar(struct ieee80211_bss_conf *link_conf) 286 { 287 struct ieee80211_chanctx_conf *chanctx_conf; 288 289 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 290 291 /* this happens on link switching, just ignore inactive ones */ 292 if (!chanctx_conf) 293 return false; 294 295 return chanctx_conf->def.chan->flags & IEEE80211_CHAN_RADAR; 296 } 297 298 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 299 struct ieee80211_vif *vif, 300 struct iwl_mac_power_cmd *cmd) 301 { 302 struct ieee80211_bss_conf *link_conf; 303 unsigned int min_link_skip = ~0; 304 unsigned int link_id; 305 306 /* disable, in case we're supposed to override */ 307 cmd->skip_dtim_periods = 0; 308 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 309 310 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 311 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 312 return; 313 cmd->skip_dtim_periods = 2; 314 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 315 return; 316 } 317 318 rcu_read_lock(); 319 for_each_vif_active_link(vif, link_conf, link_id) { 320 unsigned int dtimper = link_conf->dtim_period ?: 1; 321 unsigned int dtimper_tu = dtimper * link_conf->beacon_int; 322 unsigned int skip; 323 324 if (dtimper >= 10 || iwl_mvm_power_is_radar(link_conf)) { 325 rcu_read_unlock(); 326 return; 327 } 328 329 if (WARN_ON(!dtimper_tu)) 330 continue; 331 332 /* configure skip over dtim up to 900 TU DTIM interval */ 333 skip = max_t(int, 1, 900 / dtimper_tu); 334 min_link_skip = min(min_link_skip, skip); 335 } 336 rcu_read_unlock(); 337 338 /* no WARN_ON, can only happen with WARN_ON above */ 339 if (min_link_skip == ~0) 340 return; 341 342 cmd->skip_dtim_periods = min_link_skip; 343 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 344 } 345 346 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 347 struct ieee80211_vif *vif, 348 struct iwl_mac_power_cmd *cmd) 349 { 350 int dtimper, bi; 351 int keep_alive; 352 struct iwl_mvm_vif *mvmvif __maybe_unused = 353 iwl_mvm_vif_from_mac80211(vif); 354 355 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 356 mvmvif->color)); 357 dtimper = vif->bss_conf.dtim_period; 358 bi = vif->bss_conf.beacon_int; 359 360 /* 361 * Regardless of power management state the driver must set 362 * keep alive period. FW will use it for sending keep alive NDPs 363 * immediately after association. Check that keep alive period 364 * is at least 3 * DTIM 365 */ 366 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 367 USEC_PER_SEC); 368 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 369 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 370 371 if (mvm->ps_disabled) 372 return; 373 374 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 375 376 if (!vif->cfg.ps || !mvmvif->pm_enabled) 377 return; 378 379 if (iwl_fw_lookup_cmd_ver(mvm->fw, MAC_PM_POWER_TABLE, 0) >= 2) 380 cmd->flags |= cpu_to_le16(POWER_FLAGS_ENABLE_SMPS_MSK); 381 382 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 383 (!fw_has_capa(&mvm->fw->ucode_capa, 384 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 385 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 386 return; 387 388 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 389 390 if (vif->bss_conf.beacon_rate && 391 (vif->bss_conf.beacon_rate->bitrate == 10 || 392 vif->bss_conf.beacon_rate->bitrate == 60)) { 393 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 394 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 395 } 396 397 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 398 399 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 400 cmd->rx_data_timeout = 401 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 402 cmd->tx_data_timeout = 403 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 404 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 405 fw_has_capa(&mvm->fw->ucode_capa, 406 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 407 cmd->tx_data_timeout = 408 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 409 cmd->rx_data_timeout = 410 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 411 } else { 412 cmd->rx_data_timeout = 413 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 414 cmd->tx_data_timeout = 415 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 416 } 417 418 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 419 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 420 421 #ifdef CONFIG_IWLWIFI_DEBUGFS 422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 423 cmd->keep_alive_seconds = 424 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 425 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 426 if (mvmvif->dbgfs_pm.skip_over_dtim) 427 cmd->flags |= 428 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 429 else 430 cmd->flags &= 431 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 432 } 433 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 434 cmd->rx_data_timeout = 435 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 436 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 437 cmd->tx_data_timeout = 438 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 439 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 440 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 441 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 442 if (mvmvif->dbgfs_pm.lprx_ena) 443 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 444 else 445 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 446 } 447 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 448 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 449 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 450 if (mvmvif->dbgfs_pm.snooze_ena) 451 cmd->flags |= 452 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 453 else 454 cmd->flags &= 455 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 456 } 457 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 458 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 459 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 460 cmd->flags |= cpu_to_le16(flag); 461 else 462 cmd->flags &= cpu_to_le16(flag); 463 } 464 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 465 } 466 467 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 468 struct ieee80211_vif *vif) 469 { 470 struct iwl_mac_power_cmd cmd = {}; 471 472 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 473 iwl_mvm_power_log(mvm, &cmd); 474 #ifdef CONFIG_IWLWIFI_DEBUGFS 475 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 476 #endif 477 478 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 479 sizeof(cmd), &cmd); 480 } 481 482 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 483 { 484 struct iwl_device_power_cmd cmd = { 485 .flags = 0, 486 }; 487 488 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 489 mvm->ps_disabled = true; 490 491 if (!mvm->ps_disabled) 492 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 493 494 #ifdef CONFIG_IWLWIFI_DEBUGFS 495 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 496 mvm->disable_power_off_d3 : mvm->disable_power_off) 497 cmd.flags &= 498 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 499 #endif 500 if (mvm->ext_clock_valid) 501 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 502 503 if (iwl_fw_lookup_cmd_ver(mvm->fw, POWER_TABLE_CMD, 0) >= 7 && 504 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 505 cmd.flags |= 506 cpu_to_le16(DEVICE_POWER_FLAGS_NO_SLEEP_TILL_D3_MSK); 507 508 IWL_DEBUG_POWER(mvm, 509 "Sending device power command with flags = 0x%X\n", 510 cmd.flags); 511 512 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 513 &cmd); 514 } 515 516 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 517 { 518 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 519 520 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 521 vif->cfg.ap_addr)) 522 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr); 523 } 524 525 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 526 struct ieee80211_vif *vif) 527 { 528 u8 *ap_sta_id = _data; 529 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 530 struct ieee80211_bss_conf *link_conf; 531 unsigned int link_id; 532 533 rcu_read_lock(); 534 for_each_vif_active_link(vif, link_conf, link_id) { 535 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 536 537 /* The ap_sta_id is not expected to change during current 538 * association so no explicit protection is needed 539 */ 540 if (link_info->ap_sta_id == *ap_sta_id) { 541 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr, 542 vif->cfg.ap_addr); 543 break; 544 } 545 } 546 rcu_read_unlock(); 547 } 548 549 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 550 struct iwl_rx_cmd_buffer *rxb) 551 { 552 struct iwl_rx_packet *pkt = rxb_addr(rxb); 553 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 554 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 555 556 ieee80211_iterate_active_interfaces_atomic( 557 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 558 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 559 } 560 561 struct iwl_power_vifs { 562 struct iwl_mvm *mvm; 563 struct ieee80211_vif *bss_vif; 564 struct ieee80211_vif *p2p_vif; 565 struct ieee80211_vif *ap_vif; 566 struct ieee80211_vif *monitor_vif; 567 bool p2p_active; 568 bool bss_active; 569 bool ap_active; 570 bool monitor_active; 571 }; 572 573 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8 *mac, 574 struct ieee80211_vif *vif) 575 { 576 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 577 578 mvmvif->pm_enabled = false; 579 } 580 581 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8 *mac, 582 struct ieee80211_vif *vif) 583 { 584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 585 bool *disable_ps = _data; 586 587 if (iwl_mvm_vif_is_active(mvmvif)) 588 *disable_ps |= mvmvif->ps_disabled; 589 } 590 591 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 592 struct ieee80211_vif *vif) 593 { 594 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 595 struct iwl_power_vifs *power_iterator = _data; 596 bool active; 597 598 if (!mvmvif->uploaded) 599 return; 600 601 active = iwl_mvm_vif_is_active(mvmvif); 602 603 switch (ieee80211_vif_type_p2p(vif)) { 604 case NL80211_IFTYPE_P2P_DEVICE: 605 break; 606 607 case NL80211_IFTYPE_P2P_GO: 608 case NL80211_IFTYPE_AP: 609 /* only a single MAC of the same type */ 610 WARN_ON(power_iterator->ap_vif); 611 power_iterator->ap_vif = vif; 612 if (active) 613 power_iterator->ap_active = true; 614 break; 615 616 case NL80211_IFTYPE_MONITOR: 617 /* only a single MAC of the same type */ 618 WARN_ON(power_iterator->monitor_vif); 619 power_iterator->monitor_vif = vif; 620 if (active) 621 power_iterator->monitor_active = true; 622 break; 623 624 case NL80211_IFTYPE_P2P_CLIENT: 625 /* only a single MAC of the same type */ 626 WARN_ON(power_iterator->p2p_vif); 627 power_iterator->p2p_vif = vif; 628 if (active) 629 power_iterator->p2p_active = true; 630 break; 631 632 case NL80211_IFTYPE_STATION: 633 power_iterator->bss_vif = vif; 634 if (active) 635 power_iterator->bss_active = true; 636 break; 637 638 default: 639 break; 640 } 641 } 642 643 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 644 struct iwl_power_vifs *vifs) 645 { 646 struct iwl_mvm_vif *bss_mvmvif = NULL; 647 struct iwl_mvm_vif *p2p_mvmvif = NULL; 648 struct iwl_mvm_vif *ap_mvmvif = NULL; 649 bool client_same_channel = false; 650 bool ap_same_channel = false; 651 652 lockdep_assert_held(&mvm->mutex); 653 654 /* set pm_enable to false */ 655 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 656 IEEE80211_IFACE_ITER_NORMAL, 657 iwl_mvm_power_disable_pm_iterator, 658 NULL); 659 660 if (vifs->bss_vif) 661 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 662 663 if (vifs->p2p_vif) 664 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 665 666 if (vifs->ap_vif) 667 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 668 669 /* don't allow PM if any TDLS stations exist */ 670 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 671 return; 672 673 /* enable PM on bss if bss stand alone */ 674 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active && 675 !vifs->ap_active) { 676 bss_mvmvif->pm_enabled = true; 677 return; 678 } 679 680 /* enable PM on p2p if p2p stand alone */ 681 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active && 682 !vifs->ap_active) { 683 p2p_mvmvif->pm_enabled = true; 684 return; 685 } 686 687 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active) 688 client_same_channel = 689 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif); 690 691 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active) 692 ap_same_channel = 693 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif); 694 695 /* clients are not stand alone: enable PM if DCM */ 696 if (!(client_same_channel || ap_same_channel)) { 697 if (bss_mvmvif && vifs->bss_active) 698 bss_mvmvif->pm_enabled = true; 699 if (p2p_mvmvif && vifs->p2p_active) 700 p2p_mvmvif->pm_enabled = true; 701 return; 702 } 703 704 /* 705 * There is only one channel in the system and there are only 706 * bss and p2p clients that share it 707 */ 708 if (client_same_channel && !vifs->ap_active) { 709 /* share same channel*/ 710 bss_mvmvif->pm_enabled = true; 711 p2p_mvmvif->pm_enabled = true; 712 } 713 } 714 715 #ifdef CONFIG_IWLWIFI_DEBUGFS 716 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 717 struct ieee80211_vif *vif, char *buf, 718 int bufsz) 719 { 720 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 721 struct iwl_mac_power_cmd cmd = {}; 722 int pos = 0; 723 724 mutex_lock(&mvm->mutex); 725 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 726 mutex_unlock(&mvm->mutex); 727 728 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 729 iwlmvm_mod_params.power_scheme); 730 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 731 le16_to_cpu(cmd.flags)); 732 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 733 le16_to_cpu(cmd.keep_alive_seconds)); 734 735 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 736 return pos; 737 738 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 739 (cmd.flags & 740 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 741 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 742 cmd.skip_dtim_periods); 743 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 744 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 745 le32_to_cpu(cmd.rx_data_timeout)); 746 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 747 le32_to_cpu(cmd.tx_data_timeout)); 748 } 749 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 750 pos += scnprintf(buf+pos, bufsz-pos, 751 "lprx_rssi_threshold = %d\n", 752 cmd.lprx_rssi_threshold); 753 754 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 755 return pos; 756 757 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 758 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 759 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 760 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 761 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 762 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 763 cmd.uapsd_ac_flags); 764 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 765 cmd.uapsd_max_sp); 766 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 767 cmd.heavy_tx_thld_packets); 768 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 769 cmd.heavy_rx_thld_packets); 770 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 771 cmd.heavy_tx_thld_percentage); 772 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 773 cmd.heavy_rx_thld_percentage); 774 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 775 (cmd.flags & 776 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 777 1 : 0); 778 779 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 780 return pos; 781 782 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 783 cmd.snooze_interval); 784 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 785 cmd.snooze_window); 786 787 return pos; 788 } 789 790 void 791 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 792 struct iwl_beacon_filter_cmd *cmd) 793 { 794 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 795 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 796 797 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 798 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 799 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 800 cmd->bf_roaming_energy_delta = 801 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 802 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 803 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 804 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 805 cmd->bf_temp_threshold = 806 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 807 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 808 cmd->bf_temp_fast_filter = 809 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 810 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 811 cmd->bf_temp_slow_filter = 812 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 813 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 814 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 815 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 816 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 817 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 818 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 819 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 820 cmd->ba_enable_beacon_abort = 821 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 822 } 823 #endif 824 825 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 826 struct ieee80211_vif *vif, 827 struct iwl_beacon_filter_cmd *cmd) 828 { 829 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 830 int ret; 831 832 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 833 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 834 return 0; 835 836 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 837 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 838 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd); 839 840 if (!ret) 841 mvmvif->bf_enabled = true; 842 843 return ret; 844 } 845 846 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 847 struct ieee80211_vif *vif) 848 { 849 struct iwl_beacon_filter_cmd cmd = { 850 IWL_BF_CMD_CONFIG_DEFAULTS, 851 .bf_enable_beacon_filter = cpu_to_le32(1), 852 }; 853 854 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 855 } 856 857 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 858 struct ieee80211_vif *vif) 859 { 860 struct iwl_beacon_filter_cmd cmd = {}; 861 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 862 int ret; 863 864 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 865 return 0; 866 867 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd); 868 869 if (!ret) 870 mvmvif->bf_enabled = false; 871 872 return ret; 873 } 874 875 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 876 struct ieee80211_vif *vif) 877 { 878 return _iwl_mvm_disable_beacon_filter(mvm, vif); 879 } 880 881 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 882 { 883 bool disable_ps; 884 int ret; 885 886 /* disable PS if CAM */ 887 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 888 /* ...or if any of the vifs require PS to be off */ 889 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 890 IEEE80211_IFACE_ITER_NORMAL, 891 iwl_mvm_power_ps_disabled_iterator, 892 &disable_ps); 893 894 /* update device power state if it has changed */ 895 if (mvm->ps_disabled != disable_ps) { 896 bool old_ps_disabled = mvm->ps_disabled; 897 898 mvm->ps_disabled = disable_ps; 899 ret = iwl_mvm_power_update_device(mvm); 900 if (ret) { 901 mvm->ps_disabled = old_ps_disabled; 902 return ret; 903 } 904 } 905 906 return 0; 907 } 908 909 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 910 struct ieee80211_vif *vif) 911 { 912 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 913 struct iwl_beacon_filter_cmd cmd = { 914 IWL_BF_CMD_CONFIG_DEFAULTS, 915 .bf_enable_beacon_filter = cpu_to_le32(1), 916 }; 917 918 if (!mvmvif->bf_enabled) 919 return 0; 920 921 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 922 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 923 924 mvmvif->ba_enabled = !(!mvmvif->pm_enabled || 925 mvm->ps_disabled || 926 !vif->cfg.ps || 927 iwl_mvm_vif_low_latency(mvmvif)); 928 929 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 930 } 931 932 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 933 { 934 struct iwl_power_vifs vifs = { 935 .mvm = mvm, 936 }; 937 int ret; 938 939 lockdep_assert_held(&mvm->mutex); 940 941 /* get vifs info */ 942 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 943 IEEE80211_IFACE_ITER_NORMAL, 944 iwl_mvm_power_get_vifs_iterator, &vifs); 945 946 ret = iwl_mvm_power_set_ps(mvm); 947 if (ret) 948 return ret; 949 950 if (vifs.bss_vif) 951 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 952 953 return 0; 954 } 955 956 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 957 { 958 struct iwl_power_vifs vifs = { 959 .mvm = mvm, 960 }; 961 int ret; 962 963 lockdep_assert_held(&mvm->mutex); 964 965 /* get vifs info */ 966 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 967 IEEE80211_IFACE_ITER_NORMAL, 968 iwl_mvm_power_get_vifs_iterator, &vifs); 969 970 iwl_mvm_power_set_pm(mvm, &vifs); 971 972 ret = iwl_mvm_power_set_ps(mvm); 973 if (ret) 974 return ret; 975 976 if (vifs.bss_vif) { 977 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 978 if (ret) 979 return ret; 980 } 981 982 if (vifs.p2p_vif) { 983 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 984 if (ret) 985 return ret; 986 } 987 988 if (vifs.bss_vif) 989 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 990 991 return 0; 992 } 993