1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2019, 2021-2024 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 static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac, 215 struct ieee80211_vif *vif) 216 { 217 bool *is_p2p_standalone = _data; 218 219 switch (ieee80211_vif_type_p2p(vif)) { 220 case NL80211_IFTYPE_P2P_GO: 221 case NL80211_IFTYPE_AP: 222 *is_p2p_standalone = false; 223 break; 224 case NL80211_IFTYPE_STATION: 225 if (vif->cfg.assoc) 226 *is_p2p_standalone = false; 227 break; 228 229 default: 230 break; 231 } 232 } 233 234 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, 235 struct ieee80211_vif *vif) 236 { 237 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 238 239 if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 240 vif->cfg.ap_addr)) 241 return false; 242 243 /* 244 * Avoid using uAPSD if P2P client is associated to GO that uses 245 * opportunistic power save. This is due to current FW limitation. 246 */ 247 if (vif->p2p && 248 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow & 249 IEEE80211_P2P_OPPPS_ENABLE_BIT)) 250 return false; 251 252 /* 253 * Avoid using uAPSD if client is in DCM - 254 * low latency issue in Miracast 255 */ 256 if (iwl_mvm_phy_ctx_count(mvm) >= 2) 257 return false; 258 259 if (vif->p2p) { 260 /* Allow U-APSD only if p2p is stand alone */ 261 bool is_p2p_standalone = true; 262 263 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) 264 return false; 265 266 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 267 IEEE80211_IFACE_ITER_NORMAL, 268 iwl_mvm_p2p_standalone_iterator, 269 &is_p2p_standalone); 270 271 if (!is_p2p_standalone) 272 return false; 273 } 274 275 return true; 276 } 277 278 static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif) 279 { 280 struct ieee80211_chanctx_conf *chanctx_conf; 281 struct ieee80211_bss_conf *link_conf; 282 bool radar_detect = false; 283 unsigned int link_id; 284 285 rcu_read_lock(); 286 for_each_vif_active_link(vif, link_conf, link_id) { 287 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 288 /* this happens on link switching, just ignore inactive ones */ 289 if (!chanctx_conf) 290 continue; 291 292 radar_detect = !!(chanctx_conf->def.chan->flags & 293 IEEE80211_CHAN_RADAR); 294 if (radar_detect) 295 goto out; 296 } 297 298 out: 299 rcu_read_unlock(); 300 return radar_detect; 301 } 302 303 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 304 struct ieee80211_vif *vif, 305 struct iwl_mac_power_cmd *cmd) 306 { 307 int dtimper = vif->bss_conf.dtim_period ?: 1; 308 int skip; 309 310 /* disable, in case we're supposed to override */ 311 cmd->skip_dtim_periods = 0; 312 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 313 314 if (iwl_mvm_power_is_radar(vif)) 315 return; 316 317 if (dtimper >= 10) 318 return; 319 320 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 321 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 322 return; 323 skip = 2; 324 } else { 325 int dtimper_tu = dtimper * vif->bss_conf.beacon_int; 326 327 if (WARN_ON(!dtimper_tu)) 328 return; 329 /* configure skip over dtim up to 900 TU DTIM interval */ 330 skip = max_t(u8, 1, 900 / dtimper_tu); 331 } 332 333 cmd->skip_dtim_periods = skip; 334 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 335 } 336 337 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 338 struct ieee80211_vif *vif, 339 struct iwl_mac_power_cmd *cmd) 340 { 341 int dtimper, bi; 342 int keep_alive; 343 struct iwl_mvm_vif *mvmvif __maybe_unused = 344 iwl_mvm_vif_from_mac80211(vif); 345 346 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 347 mvmvif->color)); 348 dtimper = vif->bss_conf.dtim_period; 349 bi = vif->bss_conf.beacon_int; 350 351 /* 352 * Regardless of power management state the driver must set 353 * keep alive period. FW will use it for sending keep alive NDPs 354 * immediately after association. Check that keep alive period 355 * is at least 3 * DTIM 356 */ 357 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 358 USEC_PER_SEC); 359 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 360 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 361 362 if (mvm->ps_disabled) 363 return; 364 365 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 366 367 if (!vif->cfg.ps || !mvmvif->pm_enabled) 368 return; 369 370 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 371 (!fw_has_capa(&mvm->fw->ucode_capa, 372 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 373 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 374 return; 375 376 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 377 378 if (vif->bss_conf.beacon_rate && 379 (vif->bss_conf.beacon_rate->bitrate == 10 || 380 vif->bss_conf.beacon_rate->bitrate == 60)) { 381 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 382 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 383 } 384 385 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 386 387 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 388 cmd->rx_data_timeout = 389 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 390 cmd->tx_data_timeout = 391 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 392 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 393 fw_has_capa(&mvm->fw->ucode_capa, 394 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 395 cmd->tx_data_timeout = 396 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 397 cmd->rx_data_timeout = 398 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 399 } else { 400 cmd->rx_data_timeout = 401 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 402 cmd->tx_data_timeout = 403 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 404 } 405 406 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 407 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 408 409 #ifdef CONFIG_IWLWIFI_DEBUGFS 410 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 411 cmd->keep_alive_seconds = 412 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 413 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 414 if (mvmvif->dbgfs_pm.skip_over_dtim) 415 cmd->flags |= 416 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 417 else 418 cmd->flags &= 419 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 420 } 421 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 422 cmd->rx_data_timeout = 423 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 424 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 425 cmd->tx_data_timeout = 426 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 427 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 428 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 429 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 430 if (mvmvif->dbgfs_pm.lprx_ena) 431 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 432 else 433 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 434 } 435 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 436 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 437 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 438 if (mvmvif->dbgfs_pm.snooze_ena) 439 cmd->flags |= 440 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 441 else 442 cmd->flags &= 443 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 444 } 445 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 446 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 447 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 448 cmd->flags |= cpu_to_le16(flag); 449 else 450 cmd->flags &= cpu_to_le16(flag); 451 } 452 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 453 } 454 455 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 456 struct ieee80211_vif *vif) 457 { 458 struct iwl_mac_power_cmd cmd = {}; 459 460 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 461 iwl_mvm_power_log(mvm, &cmd); 462 #ifdef CONFIG_IWLWIFI_DEBUGFS 463 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 464 #endif 465 466 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 467 sizeof(cmd), &cmd); 468 } 469 470 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 471 { 472 struct iwl_device_power_cmd cmd = { 473 .flags = 0, 474 }; 475 476 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 477 mvm->ps_disabled = true; 478 479 if (!mvm->ps_disabled) 480 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 481 482 #ifdef CONFIG_IWLWIFI_DEBUGFS 483 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 484 mvm->disable_power_off_d3 : mvm->disable_power_off) 485 cmd.flags &= 486 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 487 #endif 488 if (mvm->ext_clock_valid) 489 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 490 491 if (iwl_fw_lookup_cmd_ver(mvm->fw, POWER_TABLE_CMD, 0) >= 7 && 492 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 493 cmd.flags |= 494 cpu_to_le16(DEVICE_POWER_FLAGS_NO_SLEEP_TILL_D3_MSK); 495 496 IWL_DEBUG_POWER(mvm, 497 "Sending device power command with flags = 0x%X\n", 498 cmd.flags); 499 500 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 501 &cmd); 502 } 503 504 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 505 { 506 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 507 508 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 509 vif->cfg.ap_addr)) 510 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr); 511 } 512 513 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 514 struct ieee80211_vif *vif) 515 { 516 u8 *ap_sta_id = _data; 517 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 518 struct ieee80211_bss_conf *link_conf; 519 unsigned int link_id; 520 521 rcu_read_lock(); 522 for_each_vif_active_link(vif, link_conf, link_id) { 523 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 524 525 /* The ap_sta_id is not expected to change during current 526 * association so no explicit protection is needed 527 */ 528 if (link_info->ap_sta_id == *ap_sta_id) { 529 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr, 530 vif->cfg.ap_addr); 531 break; 532 } 533 } 534 rcu_read_unlock(); 535 } 536 537 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 538 struct iwl_rx_cmd_buffer *rxb) 539 { 540 struct iwl_rx_packet *pkt = rxb_addr(rxb); 541 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 542 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 543 544 ieee80211_iterate_active_interfaces_atomic( 545 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 546 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 547 } 548 549 struct iwl_power_vifs { 550 struct iwl_mvm *mvm; 551 struct ieee80211_vif *bss_vif; 552 struct ieee80211_vif *p2p_vif; 553 struct ieee80211_vif *ap_vif; 554 struct ieee80211_vif *monitor_vif; 555 bool p2p_active; 556 bool bss_active; 557 bool ap_active; 558 bool monitor_active; 559 }; 560 561 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 562 struct ieee80211_vif *vif) 563 { 564 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 565 566 mvmvif->pm_enabled = false; 567 } 568 569 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 570 struct ieee80211_vif *vif) 571 { 572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 573 bool *disable_ps = _data; 574 575 if (iwl_mvm_vif_is_active(mvmvif)) 576 *disable_ps |= mvmvif->ps_disabled; 577 } 578 579 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 580 struct ieee80211_vif *vif) 581 { 582 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 583 struct iwl_power_vifs *power_iterator = _data; 584 bool active; 585 586 if (!mvmvif->uploaded) 587 return; 588 589 active = iwl_mvm_vif_is_active(mvmvif); 590 591 switch (ieee80211_vif_type_p2p(vif)) { 592 case NL80211_IFTYPE_P2P_DEVICE: 593 break; 594 595 case NL80211_IFTYPE_P2P_GO: 596 case NL80211_IFTYPE_AP: 597 /* only a single MAC of the same type */ 598 WARN_ON(power_iterator->ap_vif); 599 power_iterator->ap_vif = vif; 600 if (active) 601 power_iterator->ap_active = true; 602 break; 603 604 case NL80211_IFTYPE_MONITOR: 605 /* only a single MAC of the same type */ 606 WARN_ON(power_iterator->monitor_vif); 607 power_iterator->monitor_vif = vif; 608 if (active) 609 power_iterator->monitor_active = true; 610 break; 611 612 case NL80211_IFTYPE_P2P_CLIENT: 613 /* only a single MAC of the same type */ 614 WARN_ON(power_iterator->p2p_vif); 615 power_iterator->p2p_vif = vif; 616 if (active) 617 power_iterator->p2p_active = true; 618 break; 619 620 case NL80211_IFTYPE_STATION: 621 power_iterator->bss_vif = vif; 622 if (active) 623 power_iterator->bss_active = true; 624 break; 625 626 default: 627 break; 628 } 629 } 630 631 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 632 struct iwl_power_vifs *vifs) 633 { 634 struct iwl_mvm_vif *bss_mvmvif = NULL; 635 struct iwl_mvm_vif *p2p_mvmvif = NULL; 636 struct iwl_mvm_vif *ap_mvmvif = NULL; 637 bool client_same_channel = false; 638 bool ap_same_channel = false; 639 640 lockdep_assert_held(&mvm->mutex); 641 642 /* set pm_enable to false */ 643 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 644 IEEE80211_IFACE_ITER_NORMAL, 645 iwl_mvm_power_disable_pm_iterator, 646 NULL); 647 648 if (vifs->bss_vif) 649 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 650 651 if (vifs->p2p_vif) 652 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 653 654 if (vifs->ap_vif) 655 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 656 657 /* don't allow PM if any TDLS stations exist */ 658 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 659 return; 660 661 /* enable PM on bss if bss stand alone */ 662 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active && 663 !vifs->ap_active) { 664 bss_mvmvif->pm_enabled = true; 665 return; 666 } 667 668 /* enable PM on p2p if p2p stand alone */ 669 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active && 670 !vifs->ap_active) { 671 p2p_mvmvif->pm_enabled = true; 672 return; 673 } 674 675 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active) 676 client_same_channel = 677 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif); 678 679 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active) 680 ap_same_channel = 681 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif); 682 683 /* clients are not stand alone: enable PM if DCM */ 684 if (!(client_same_channel || ap_same_channel)) { 685 if (bss_mvmvif && vifs->bss_active) 686 bss_mvmvif->pm_enabled = true; 687 if (p2p_mvmvif && vifs->p2p_active) 688 p2p_mvmvif->pm_enabled = true; 689 return; 690 } 691 692 /* 693 * There is only one channel in the system and there are only 694 * bss and p2p clients that share it 695 */ 696 if (client_same_channel && !vifs->ap_active) { 697 /* share same channel*/ 698 bss_mvmvif->pm_enabled = true; 699 p2p_mvmvif->pm_enabled = true; 700 } 701 } 702 703 #ifdef CONFIG_IWLWIFI_DEBUGFS 704 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 705 struct ieee80211_vif *vif, char *buf, 706 int bufsz) 707 { 708 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 709 struct iwl_mac_power_cmd cmd = {}; 710 int pos = 0; 711 712 mutex_lock(&mvm->mutex); 713 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 714 mutex_unlock(&mvm->mutex); 715 716 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 717 iwlmvm_mod_params.power_scheme); 718 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 719 le16_to_cpu(cmd.flags)); 720 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 721 le16_to_cpu(cmd.keep_alive_seconds)); 722 723 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 724 return pos; 725 726 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 727 (cmd.flags & 728 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 729 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 730 cmd.skip_dtim_periods); 731 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 732 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 733 le32_to_cpu(cmd.rx_data_timeout)); 734 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 735 le32_to_cpu(cmd.tx_data_timeout)); 736 } 737 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 738 pos += scnprintf(buf+pos, bufsz-pos, 739 "lprx_rssi_threshold = %d\n", 740 cmd.lprx_rssi_threshold); 741 742 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 743 return pos; 744 745 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 746 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 747 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 748 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 749 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 750 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 751 cmd.uapsd_ac_flags); 752 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 753 cmd.uapsd_max_sp); 754 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 755 cmd.heavy_tx_thld_packets); 756 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 757 cmd.heavy_rx_thld_packets); 758 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 759 cmd.heavy_tx_thld_percentage); 760 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 761 cmd.heavy_rx_thld_percentage); 762 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 763 (cmd.flags & 764 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 765 1 : 0); 766 767 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 768 return pos; 769 770 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 771 cmd.snooze_interval); 772 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 773 cmd.snooze_window); 774 775 return pos; 776 } 777 778 void 779 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 780 struct iwl_beacon_filter_cmd *cmd) 781 { 782 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 783 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 784 785 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 786 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 787 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 788 cmd->bf_roaming_energy_delta = 789 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 790 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 791 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 792 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 793 cmd->bf_temp_threshold = 794 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 795 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 796 cmd->bf_temp_fast_filter = 797 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 798 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 799 cmd->bf_temp_slow_filter = 800 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 801 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 802 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 803 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 804 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 805 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 806 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 807 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 808 cmd->ba_enable_beacon_abort = 809 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 810 } 811 #endif 812 813 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 814 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 int ret; 819 820 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 821 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 822 return 0; 823 824 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 825 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 826 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd); 827 828 if (!ret) 829 mvmvif->bf_enabled = true; 830 831 return ret; 832 } 833 834 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 835 struct ieee80211_vif *vif) 836 { 837 struct iwl_beacon_filter_cmd cmd = { 838 IWL_BF_CMD_CONFIG_DEFAULTS, 839 .bf_enable_beacon_filter = cpu_to_le32(1), 840 }; 841 842 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 843 } 844 845 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 846 struct ieee80211_vif *vif) 847 { 848 struct iwl_beacon_filter_cmd cmd = {}; 849 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 850 int ret; 851 852 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 853 return 0; 854 855 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd); 856 857 if (!ret) 858 mvmvif->bf_enabled = false; 859 860 return ret; 861 } 862 863 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 864 struct ieee80211_vif *vif) 865 { 866 return _iwl_mvm_disable_beacon_filter(mvm, vif); 867 } 868 869 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 870 { 871 bool disable_ps; 872 int ret; 873 874 /* disable PS if CAM */ 875 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 876 /* ...or if any of the vifs require PS to be off */ 877 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 878 IEEE80211_IFACE_ITER_NORMAL, 879 iwl_mvm_power_ps_disabled_iterator, 880 &disable_ps); 881 882 /* update device power state if it has changed */ 883 if (mvm->ps_disabled != disable_ps) { 884 bool old_ps_disabled = mvm->ps_disabled; 885 886 mvm->ps_disabled = disable_ps; 887 ret = iwl_mvm_power_update_device(mvm); 888 if (ret) { 889 mvm->ps_disabled = old_ps_disabled; 890 return ret; 891 } 892 } 893 894 return 0; 895 } 896 897 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 898 struct ieee80211_vif *vif) 899 { 900 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 901 struct iwl_beacon_filter_cmd cmd = { 902 IWL_BF_CMD_CONFIG_DEFAULTS, 903 .bf_enable_beacon_filter = cpu_to_le32(1), 904 }; 905 906 if (!mvmvif->bf_enabled) 907 return 0; 908 909 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 910 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 911 912 mvmvif->ba_enabled = !(!mvmvif->pm_enabled || 913 mvm->ps_disabled || 914 !vif->cfg.ps || 915 iwl_mvm_vif_low_latency(mvmvif)); 916 917 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 918 } 919 920 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 921 { 922 struct iwl_power_vifs vifs = { 923 .mvm = mvm, 924 }; 925 int ret; 926 927 lockdep_assert_held(&mvm->mutex); 928 929 /* get vifs info */ 930 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 931 IEEE80211_IFACE_ITER_NORMAL, 932 iwl_mvm_power_get_vifs_iterator, &vifs); 933 934 ret = iwl_mvm_power_set_ps(mvm); 935 if (ret) 936 return ret; 937 938 if (vifs.bss_vif) 939 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 940 941 return 0; 942 } 943 944 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 945 { 946 struct iwl_power_vifs vifs = { 947 .mvm = mvm, 948 }; 949 int ret; 950 951 lockdep_assert_held(&mvm->mutex); 952 953 /* get vifs info */ 954 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 955 IEEE80211_IFACE_ITER_NORMAL, 956 iwl_mvm_power_get_vifs_iterator, &vifs); 957 958 iwl_mvm_power_set_pm(mvm, &vifs); 959 960 ret = iwl_mvm_power_set_ps(mvm); 961 if (ret) 962 return ret; 963 964 if (vifs.bss_vif) { 965 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 966 if (ret) 967 return ret; 968 } 969 970 if (vifs.p2p_vif) { 971 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 972 if (ret) 973 return ret; 974 } 975 976 if (vifs.bss_vif) 977 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 978 979 return 0; 980 } 981