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 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_mvm_vif_low_latency(mvmvif) && vif->p2p && 380 (!fw_has_capa(&mvm->fw->ucode_capa, 381 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 382 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 383 return; 384 385 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 386 387 if (vif->bss_conf.beacon_rate && 388 (vif->bss_conf.beacon_rate->bitrate == 10 || 389 vif->bss_conf.beacon_rate->bitrate == 60)) { 390 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 391 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 392 } 393 394 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 395 396 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 397 cmd->rx_data_timeout = 398 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 399 cmd->tx_data_timeout = 400 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 401 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 402 fw_has_capa(&mvm->fw->ucode_capa, 403 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 404 cmd->tx_data_timeout = 405 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 406 cmd->rx_data_timeout = 407 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 408 } else { 409 cmd->rx_data_timeout = 410 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 411 cmd->tx_data_timeout = 412 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 413 } 414 415 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 416 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 417 418 #ifdef CONFIG_IWLWIFI_DEBUGFS 419 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 420 cmd->keep_alive_seconds = 421 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 423 if (mvmvif->dbgfs_pm.skip_over_dtim) 424 cmd->flags |= 425 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 426 else 427 cmd->flags &= 428 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 429 } 430 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 431 cmd->rx_data_timeout = 432 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 433 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 434 cmd->tx_data_timeout = 435 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 436 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 437 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 438 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 439 if (mvmvif->dbgfs_pm.lprx_ena) 440 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 441 else 442 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 443 } 444 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 445 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 446 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 447 if (mvmvif->dbgfs_pm.snooze_ena) 448 cmd->flags |= 449 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 450 else 451 cmd->flags &= 452 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 453 } 454 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 455 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 456 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 457 cmd->flags |= cpu_to_le16(flag); 458 else 459 cmd->flags &= cpu_to_le16(flag); 460 } 461 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 462 } 463 464 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 465 struct ieee80211_vif *vif) 466 { 467 struct iwl_mac_power_cmd cmd = {}; 468 469 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 470 iwl_mvm_power_log(mvm, &cmd); 471 #ifdef CONFIG_IWLWIFI_DEBUGFS 472 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 473 #endif 474 475 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 476 sizeof(cmd), &cmd); 477 } 478 479 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 480 { 481 struct iwl_device_power_cmd cmd = { 482 .flags = 0, 483 }; 484 485 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 486 mvm->ps_disabled = true; 487 488 if (!mvm->ps_disabled) 489 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 490 491 #ifdef CONFIG_IWLWIFI_DEBUGFS 492 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 493 mvm->disable_power_off_d3 : mvm->disable_power_off) 494 cmd.flags &= 495 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 496 #endif 497 if (mvm->ext_clock_valid) 498 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 499 500 if (iwl_fw_lookup_cmd_ver(mvm->fw, POWER_TABLE_CMD, 0) >= 7 && 501 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 502 cmd.flags |= 503 cpu_to_le16(DEVICE_POWER_FLAGS_NO_SLEEP_TILL_D3_MSK); 504 505 IWL_DEBUG_POWER(mvm, 506 "Sending device power command with flags = 0x%X\n", 507 cmd.flags); 508 509 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 510 &cmd); 511 } 512 513 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 514 { 515 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 516 517 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 518 vif->cfg.ap_addr)) 519 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr); 520 } 521 522 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 523 struct ieee80211_vif *vif) 524 { 525 u8 *ap_sta_id = _data; 526 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 527 struct ieee80211_bss_conf *link_conf; 528 unsigned int link_id; 529 530 rcu_read_lock(); 531 for_each_vif_active_link(vif, link_conf, link_id) { 532 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 533 534 /* The ap_sta_id is not expected to change during current 535 * association so no explicit protection is needed 536 */ 537 if (link_info->ap_sta_id == *ap_sta_id) { 538 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr, 539 vif->cfg.ap_addr); 540 break; 541 } 542 } 543 rcu_read_unlock(); 544 } 545 546 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 547 struct iwl_rx_cmd_buffer *rxb) 548 { 549 struct iwl_rx_packet *pkt = rxb_addr(rxb); 550 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 551 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 552 553 ieee80211_iterate_active_interfaces_atomic( 554 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 555 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 556 } 557 558 struct iwl_power_vifs { 559 struct iwl_mvm *mvm; 560 struct ieee80211_vif *bss_vif; 561 struct ieee80211_vif *p2p_vif; 562 struct ieee80211_vif *ap_vif; 563 struct ieee80211_vif *monitor_vif; 564 bool p2p_active; 565 bool bss_active; 566 bool ap_active; 567 bool monitor_active; 568 }; 569 570 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 571 struct ieee80211_vif *vif) 572 { 573 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 574 575 mvmvif->pm_enabled = false; 576 } 577 578 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 579 struct ieee80211_vif *vif) 580 { 581 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 582 bool *disable_ps = _data; 583 584 if (iwl_mvm_vif_is_active(mvmvif)) 585 *disable_ps |= mvmvif->ps_disabled; 586 } 587 588 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 589 struct ieee80211_vif *vif) 590 { 591 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 592 struct iwl_power_vifs *power_iterator = _data; 593 bool active; 594 595 if (!mvmvif->uploaded) 596 return; 597 598 active = iwl_mvm_vif_is_active(mvmvif); 599 600 switch (ieee80211_vif_type_p2p(vif)) { 601 case NL80211_IFTYPE_P2P_DEVICE: 602 break; 603 604 case NL80211_IFTYPE_P2P_GO: 605 case NL80211_IFTYPE_AP: 606 /* only a single MAC of the same type */ 607 WARN_ON(power_iterator->ap_vif); 608 power_iterator->ap_vif = vif; 609 if (active) 610 power_iterator->ap_active = true; 611 break; 612 613 case NL80211_IFTYPE_MONITOR: 614 /* only a single MAC of the same type */ 615 WARN_ON(power_iterator->monitor_vif); 616 power_iterator->monitor_vif = vif; 617 if (active) 618 power_iterator->monitor_active = true; 619 break; 620 621 case NL80211_IFTYPE_P2P_CLIENT: 622 /* only a single MAC of the same type */ 623 WARN_ON(power_iterator->p2p_vif); 624 power_iterator->p2p_vif = vif; 625 if (active) 626 power_iterator->p2p_active = true; 627 break; 628 629 case NL80211_IFTYPE_STATION: 630 power_iterator->bss_vif = vif; 631 if (active) 632 power_iterator->bss_active = true; 633 break; 634 635 default: 636 break; 637 } 638 } 639 640 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 641 struct iwl_power_vifs *vifs) 642 { 643 struct iwl_mvm_vif *bss_mvmvif = NULL; 644 struct iwl_mvm_vif *p2p_mvmvif = NULL; 645 struct iwl_mvm_vif *ap_mvmvif = NULL; 646 bool client_same_channel = false; 647 bool ap_same_channel = false; 648 649 lockdep_assert_held(&mvm->mutex); 650 651 /* set pm_enable to false */ 652 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 653 IEEE80211_IFACE_ITER_NORMAL, 654 iwl_mvm_power_disable_pm_iterator, 655 NULL); 656 657 if (vifs->bss_vif) 658 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 659 660 if (vifs->p2p_vif) 661 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 662 663 if (vifs->ap_vif) 664 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 665 666 /* don't allow PM if any TDLS stations exist */ 667 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 668 return; 669 670 /* enable PM on bss if bss stand alone */ 671 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active && 672 !vifs->ap_active) { 673 bss_mvmvif->pm_enabled = true; 674 return; 675 } 676 677 /* enable PM on p2p if p2p stand alone */ 678 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active && 679 !vifs->ap_active) { 680 p2p_mvmvif->pm_enabled = true; 681 return; 682 } 683 684 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active) 685 client_same_channel = 686 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif); 687 688 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active) 689 ap_same_channel = 690 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif); 691 692 /* clients are not stand alone: enable PM if DCM */ 693 if (!(client_same_channel || ap_same_channel)) { 694 if (bss_mvmvif && vifs->bss_active) 695 bss_mvmvif->pm_enabled = true; 696 if (p2p_mvmvif && vifs->p2p_active) 697 p2p_mvmvif->pm_enabled = true; 698 return; 699 } 700 701 /* 702 * There is only one channel in the system and there are only 703 * bss and p2p clients that share it 704 */ 705 if (client_same_channel && !vifs->ap_active) { 706 /* share same channel*/ 707 bss_mvmvif->pm_enabled = true; 708 p2p_mvmvif->pm_enabled = true; 709 } 710 } 711 712 #ifdef CONFIG_IWLWIFI_DEBUGFS 713 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 714 struct ieee80211_vif *vif, char *buf, 715 int bufsz) 716 { 717 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 718 struct iwl_mac_power_cmd cmd = {}; 719 int pos = 0; 720 721 mutex_lock(&mvm->mutex); 722 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 723 mutex_unlock(&mvm->mutex); 724 725 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 726 iwlmvm_mod_params.power_scheme); 727 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 728 le16_to_cpu(cmd.flags)); 729 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 730 le16_to_cpu(cmd.keep_alive_seconds)); 731 732 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 733 return pos; 734 735 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 736 (cmd.flags & 737 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 738 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 739 cmd.skip_dtim_periods); 740 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 741 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 742 le32_to_cpu(cmd.rx_data_timeout)); 743 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 744 le32_to_cpu(cmd.tx_data_timeout)); 745 } 746 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 747 pos += scnprintf(buf+pos, bufsz-pos, 748 "lprx_rssi_threshold = %d\n", 749 cmd.lprx_rssi_threshold); 750 751 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 752 return pos; 753 754 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 755 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 756 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 757 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 758 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 759 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 760 cmd.uapsd_ac_flags); 761 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 762 cmd.uapsd_max_sp); 763 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 764 cmd.heavy_tx_thld_packets); 765 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 766 cmd.heavy_rx_thld_packets); 767 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 768 cmd.heavy_tx_thld_percentage); 769 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 770 cmd.heavy_rx_thld_percentage); 771 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 772 (cmd.flags & 773 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 774 1 : 0); 775 776 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 777 return pos; 778 779 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 780 cmd.snooze_interval); 781 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 782 cmd.snooze_window); 783 784 return pos; 785 } 786 787 void 788 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 789 struct iwl_beacon_filter_cmd *cmd) 790 { 791 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 792 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 793 794 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 795 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 796 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 797 cmd->bf_roaming_energy_delta = 798 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 799 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 800 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 801 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 802 cmd->bf_temp_threshold = 803 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 804 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 805 cmd->bf_temp_fast_filter = 806 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 807 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 808 cmd->bf_temp_slow_filter = 809 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 810 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 811 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 812 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 813 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 814 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 815 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 816 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 817 cmd->ba_enable_beacon_abort = 818 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 819 } 820 #endif 821 822 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 823 struct ieee80211_vif *vif, 824 struct iwl_beacon_filter_cmd *cmd) 825 { 826 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 827 int ret; 828 829 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 830 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 831 return 0; 832 833 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 834 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 835 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd); 836 837 if (!ret) 838 mvmvif->bf_enabled = true; 839 840 return ret; 841 } 842 843 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 844 struct ieee80211_vif *vif) 845 { 846 struct iwl_beacon_filter_cmd cmd = { 847 IWL_BF_CMD_CONFIG_DEFAULTS, 848 .bf_enable_beacon_filter = cpu_to_le32(1), 849 }; 850 851 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 852 } 853 854 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 855 struct ieee80211_vif *vif) 856 { 857 struct iwl_beacon_filter_cmd cmd = {}; 858 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 859 int ret; 860 861 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 862 return 0; 863 864 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd); 865 866 if (!ret) 867 mvmvif->bf_enabled = false; 868 869 return ret; 870 } 871 872 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 873 struct ieee80211_vif *vif) 874 { 875 return _iwl_mvm_disable_beacon_filter(mvm, vif); 876 } 877 878 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 879 { 880 bool disable_ps; 881 int ret; 882 883 /* disable PS if CAM */ 884 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 885 /* ...or if any of the vifs require PS to be off */ 886 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 887 IEEE80211_IFACE_ITER_NORMAL, 888 iwl_mvm_power_ps_disabled_iterator, 889 &disable_ps); 890 891 /* update device power state if it has changed */ 892 if (mvm->ps_disabled != disable_ps) { 893 bool old_ps_disabled = mvm->ps_disabled; 894 895 mvm->ps_disabled = disable_ps; 896 ret = iwl_mvm_power_update_device(mvm); 897 if (ret) { 898 mvm->ps_disabled = old_ps_disabled; 899 return ret; 900 } 901 } 902 903 return 0; 904 } 905 906 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 907 struct ieee80211_vif *vif) 908 { 909 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 910 struct iwl_beacon_filter_cmd cmd = { 911 IWL_BF_CMD_CONFIG_DEFAULTS, 912 .bf_enable_beacon_filter = cpu_to_le32(1), 913 }; 914 915 if (!mvmvif->bf_enabled) 916 return 0; 917 918 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 919 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 920 921 mvmvif->ba_enabled = !(!mvmvif->pm_enabled || 922 mvm->ps_disabled || 923 !vif->cfg.ps || 924 iwl_mvm_vif_low_latency(mvmvif)); 925 926 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd); 927 } 928 929 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 930 { 931 struct iwl_power_vifs vifs = { 932 .mvm = mvm, 933 }; 934 int ret; 935 936 lockdep_assert_held(&mvm->mutex); 937 938 /* get vifs info */ 939 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 940 IEEE80211_IFACE_ITER_NORMAL, 941 iwl_mvm_power_get_vifs_iterator, &vifs); 942 943 ret = iwl_mvm_power_set_ps(mvm); 944 if (ret) 945 return ret; 946 947 if (vifs.bss_vif) 948 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 949 950 return 0; 951 } 952 953 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 954 { 955 struct iwl_power_vifs vifs = { 956 .mvm = mvm, 957 }; 958 int ret; 959 960 lockdep_assert_held(&mvm->mutex); 961 962 /* get vifs info */ 963 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 964 IEEE80211_IFACE_ITER_NORMAL, 965 iwl_mvm_power_get_vifs_iterator, &vifs); 966 967 iwl_mvm_power_set_pm(mvm, &vifs); 968 969 ret = iwl_mvm_power_set_ps(mvm); 970 if (ret) 971 return ret; 972 973 if (vifs.bss_vif) { 974 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 975 if (ret) 976 return ret; 977 } 978 979 if (vifs.p2p_vif) { 980 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 981 if (ret) 982 return ret; 983 } 984 985 if (vifs.bss_vif) 986 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 987 988 return 0; 989 } 990