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