1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2019, 2021-2023 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 u32 flags) 25 { 26 u16 len; 27 28 IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n", 29 le32_to_cpu(cmd->ba_enable_beacon_abort)); 30 IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n", 31 le32_to_cpu(cmd->ba_escape_timer)); 32 IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n", 33 le32_to_cpu(cmd->bf_debug_flag)); 34 IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n", 35 le32_to_cpu(cmd->bf_enable_beacon_filter)); 36 IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n", 37 le32_to_cpu(cmd->bf_energy_delta)); 38 IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n", 39 le32_to_cpu(cmd->bf_escape_timer)); 40 IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n", 41 le32_to_cpu(cmd->bf_roaming_energy_delta)); 42 IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n", 43 le32_to_cpu(cmd->bf_roaming_state)); 44 IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n", 45 le32_to_cpu(cmd->bf_temp_threshold)); 46 IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n", 47 le32_to_cpu(cmd->bf_temp_fast_filter)); 48 IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n", 49 le32_to_cpu(cmd->bf_temp_slow_filter)); 50 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_low is: %d, %d\n", 51 le32_to_cpu(cmd->bf_threshold_absolute_low[0]), 52 le32_to_cpu(cmd->bf_threshold_absolute_low[1])); 53 54 IWL_DEBUG_POWER(mvm, "bf_threshold_absolute_high is: %d, %d\n", 55 le32_to_cpu(cmd->bf_threshold_absolute_high[0]), 56 le32_to_cpu(cmd->bf_threshold_absolute_high[1])); 57 58 if (fw_has_api(&mvm->fw->ucode_capa, 59 IWL_UCODE_TLV_API_BEACON_FILTER_V4)) 60 len = sizeof(struct iwl_beacon_filter_cmd); 61 else 62 len = offsetof(struct iwl_beacon_filter_cmd, 63 bf_threshold_absolute_low); 64 65 return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags, 66 len, cmd); 67 } 68 69 static 70 void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm, 71 struct ieee80211_vif *vif, 72 struct iwl_beacon_filter_cmd *cmd) 73 { 74 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 75 76 if (vif->bss_conf.cqm_rssi_thold) { 77 cmd->bf_energy_delta = 78 cpu_to_le32(vif->bss_conf.cqm_rssi_hyst); 79 /* fw uses an absolute value for this */ 80 cmd->bf_roaming_state = 81 cpu_to_le32(-vif->bss_conf.cqm_rssi_thold); 82 } 83 cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled); 84 } 85 86 static void iwl_mvm_power_log(struct iwl_mvm *mvm, 87 struct iwl_mac_power_cmd *cmd) 88 { 89 IWL_DEBUG_POWER(mvm, 90 "Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n", 91 cmd->id_and_color, iwlmvm_mod_params.power_scheme, 92 le16_to_cpu(cmd->flags)); 93 IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", 94 le16_to_cpu(cmd->keep_alive_seconds)); 95 96 if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) { 97 IWL_DEBUG_POWER(mvm, "Disable power management\n"); 98 return; 99 } 100 101 IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n", 102 le32_to_cpu(cmd->rx_data_timeout)); 103 IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n", 104 le32_to_cpu(cmd->tx_data_timeout)); 105 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) 106 IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n", 107 cmd->skip_dtim_periods); 108 if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 109 IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n", 110 cmd->lprx_rssi_threshold); 111 if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) { 112 IWL_DEBUG_POWER(mvm, "uAPSD enabled\n"); 113 IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n", 114 le32_to_cpu(cmd->rx_data_timeout_uapsd)); 115 IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n", 116 le32_to_cpu(cmd->tx_data_timeout_uapsd)); 117 IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid); 118 IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags); 119 IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp); 120 } 121 } 122 123 static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm, 124 struct ieee80211_vif *vif, 125 struct iwl_mac_power_cmd *cmd) 126 { 127 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 128 enum ieee80211_ac_numbers ac; 129 bool tid_found = false; 130 131 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) || 132 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 133 cmd->rx_data_timeout_uapsd = 134 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 135 cmd->tx_data_timeout_uapsd = 136 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 137 } else { 138 cmd->rx_data_timeout_uapsd = 139 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT); 140 cmd->tx_data_timeout_uapsd = 141 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT); 142 } 143 144 #ifdef CONFIG_IWLWIFI_DEBUGFS 145 /* set advanced pm flag with no uapsd ACs to enable ps-poll */ 146 if (mvmvif->dbgfs_pm.use_ps_poll) { 147 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 148 return; 149 } 150 #endif 151 152 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) { 153 if (!mvmvif->deflink.queue_params[ac].uapsd) 154 continue; 155 156 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 157 cmd->flags |= 158 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 159 160 cmd->uapsd_ac_flags |= BIT(ac); 161 162 /* QNDP TID - the highest TID with no admission control */ 163 if (!tid_found && !mvmvif->deflink.queue_params[ac].acm) { 164 tid_found = true; 165 switch (ac) { 166 case IEEE80211_AC_VO: 167 cmd->qndp_tid = 6; 168 break; 169 case IEEE80211_AC_VI: 170 cmd->qndp_tid = 5; 171 break; 172 case IEEE80211_AC_BE: 173 cmd->qndp_tid = 0; 174 break; 175 case IEEE80211_AC_BK: 176 cmd->qndp_tid = 1; 177 break; 178 } 179 } 180 } 181 182 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK); 183 184 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) | 185 BIT(IEEE80211_AC_VI) | 186 BIT(IEEE80211_AC_BE) | 187 BIT(IEEE80211_AC_BK))) { 188 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 189 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL); 190 cmd->snooze_window = 191 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 192 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) : 193 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW); 194 } 195 196 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len; 197 198 if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 199 cmd->heavy_tx_thld_packets = 200 IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS; 201 cmd->heavy_rx_thld_packets = 202 IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS; 203 } else { 204 cmd->heavy_tx_thld_packets = 205 IWL_MVM_PS_HEAVY_TX_THLD_PACKETS; 206 cmd->heavy_rx_thld_packets = 207 IWL_MVM_PS_HEAVY_RX_THLD_PACKETS; 208 } 209 cmd->heavy_tx_thld_percentage = 210 IWL_MVM_PS_HEAVY_TX_THLD_PERCENT; 211 cmd->heavy_rx_thld_percentage = 212 IWL_MVM_PS_HEAVY_RX_THLD_PERCENT; 213 } 214 215 static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac, 216 struct ieee80211_vif *vif) 217 { 218 bool *is_p2p_standalone = _data; 219 220 switch (ieee80211_vif_type_p2p(vif)) { 221 case NL80211_IFTYPE_P2P_GO: 222 case NL80211_IFTYPE_AP: 223 *is_p2p_standalone = false; 224 break; 225 case NL80211_IFTYPE_STATION: 226 if (vif->cfg.assoc) 227 *is_p2p_standalone = false; 228 break; 229 230 default: 231 break; 232 } 233 } 234 235 static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm, 236 struct ieee80211_vif *vif) 237 { 238 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 239 240 if (ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 241 vif->cfg.ap_addr)) 242 return false; 243 244 /* 245 * Avoid using uAPSD if P2P client is associated to GO that uses 246 * opportunistic power save. This is due to current FW limitation. 247 */ 248 if (vif->p2p && 249 (vif->bss_conf.p2p_noa_attr.oppps_ctwindow & 250 IEEE80211_P2P_OPPPS_ENABLE_BIT)) 251 return false; 252 253 /* 254 * Avoid using uAPSD if client is in DCM - 255 * low latency issue in Miracast 256 */ 257 if (iwl_mvm_phy_ctx_count(mvm) >= 2) 258 return false; 259 260 if (vif->p2p) { 261 /* Allow U-APSD only if p2p is stand alone */ 262 bool is_p2p_standalone = true; 263 264 if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) 265 return false; 266 267 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 268 IEEE80211_IFACE_ITER_NORMAL, 269 iwl_mvm_p2p_standalone_iterator, 270 &is_p2p_standalone); 271 272 if (!is_p2p_standalone) 273 return false; 274 } 275 276 return true; 277 } 278 279 static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif) 280 { 281 struct ieee80211_chanctx_conf *chanctx_conf; 282 struct ieee80211_bss_conf *link_conf; 283 bool radar_detect = false; 284 unsigned int link_id; 285 286 rcu_read_lock(); 287 for_each_vif_active_link(vif, link_conf, link_id) { 288 chanctx_conf = rcu_dereference(link_conf->chanctx_conf); 289 /* this happens on link switching, just ignore inactive ones */ 290 if (!chanctx_conf) 291 continue; 292 293 radar_detect = !!(chanctx_conf->def.chan->flags & 294 IEEE80211_CHAN_RADAR); 295 if (radar_detect) 296 goto out; 297 } 298 299 out: 300 rcu_read_unlock(); 301 return radar_detect; 302 } 303 304 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 305 struct ieee80211_vif *vif, 306 struct iwl_mac_power_cmd *cmd) 307 { 308 int dtimper = vif->bss_conf.dtim_period ?: 1; 309 int skip; 310 311 /* disable, in case we're supposed to override */ 312 cmd->skip_dtim_periods = 0; 313 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 314 315 if (iwl_mvm_power_is_radar(vif)) 316 return; 317 318 if (dtimper >= 10) 319 return; 320 321 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 322 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 323 return; 324 skip = 2; 325 } else { 326 int dtimper_tu = dtimper * vif->bss_conf.beacon_int; 327 328 if (WARN_ON(!dtimper_tu)) 329 return; 330 /* configure skip over dtim up to 900 TU DTIM interval */ 331 skip = max_t(u8, 1, 900 / dtimper_tu); 332 } 333 334 cmd->skip_dtim_periods = skip; 335 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 336 } 337 338 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 339 struct ieee80211_vif *vif, 340 struct iwl_mac_power_cmd *cmd) 341 { 342 int dtimper, bi; 343 int keep_alive; 344 struct iwl_mvm_vif *mvmvif __maybe_unused = 345 iwl_mvm_vif_from_mac80211(vif); 346 347 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 348 mvmvif->color)); 349 dtimper = vif->bss_conf.dtim_period; 350 bi = vif->bss_conf.beacon_int; 351 352 /* 353 * Regardless of power management state the driver must set 354 * keep alive period. FW will use it for sending keep alive NDPs 355 * immediately after association. Check that keep alive period 356 * is at least 3 * DTIM 357 */ 358 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 359 USEC_PER_SEC); 360 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 361 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 362 363 if (mvm->ps_disabled) 364 return; 365 366 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 367 368 if (!vif->cfg.ps || !mvmvif->pm_enabled) 369 return; 370 371 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 372 (!fw_has_capa(&mvm->fw->ucode_capa, 373 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 374 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 375 return; 376 377 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 378 379 if (vif->bss_conf.beacon_rate && 380 (vif->bss_conf.beacon_rate->bitrate == 10 || 381 vif->bss_conf.beacon_rate->bitrate == 60)) { 382 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 383 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 384 } 385 386 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 387 388 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 389 cmd->rx_data_timeout = 390 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 391 cmd->tx_data_timeout = 392 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 393 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 394 fw_has_capa(&mvm->fw->ucode_capa, 395 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 396 cmd->tx_data_timeout = 397 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 398 cmd->rx_data_timeout = 399 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 400 } else { 401 cmd->rx_data_timeout = 402 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 403 cmd->tx_data_timeout = 404 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 405 } 406 407 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 408 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 409 410 #ifdef CONFIG_IWLWIFI_DEBUGFS 411 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 412 cmd->keep_alive_seconds = 413 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 414 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 415 if (mvmvif->dbgfs_pm.skip_over_dtim) 416 cmd->flags |= 417 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 418 else 419 cmd->flags &= 420 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 421 } 422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 423 cmd->rx_data_timeout = 424 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 425 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 426 cmd->tx_data_timeout = 427 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 428 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 429 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 430 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 431 if (mvmvif->dbgfs_pm.lprx_ena) 432 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 433 else 434 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 435 } 436 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 437 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 438 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 439 if (mvmvif->dbgfs_pm.snooze_ena) 440 cmd->flags |= 441 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 442 else 443 cmd->flags &= 444 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 445 } 446 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 447 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 448 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 449 cmd->flags |= cpu_to_le16(flag); 450 else 451 cmd->flags &= cpu_to_le16(flag); 452 } 453 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 454 } 455 456 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 457 struct ieee80211_vif *vif) 458 { 459 struct iwl_mac_power_cmd cmd = {}; 460 461 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 462 iwl_mvm_power_log(mvm, &cmd); 463 #ifdef CONFIG_IWLWIFI_DEBUGFS 464 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 465 #endif 466 467 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 468 sizeof(cmd), &cmd); 469 } 470 471 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 472 { 473 struct iwl_device_power_cmd cmd = { 474 .flags = 0, 475 }; 476 477 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 478 mvm->ps_disabled = true; 479 480 if (!mvm->ps_disabled) 481 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 482 483 #ifdef CONFIG_IWLWIFI_DEBUGFS 484 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 485 mvm->disable_power_off_d3 : mvm->disable_power_off) 486 cmd.flags &= 487 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 488 #endif 489 if (mvm->ext_clock_valid) 490 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 491 492 if (iwl_fw_lookup_cmd_ver(mvm->fw, POWER_TABLE_CMD, 0) >= 7 && 493 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 494 cmd.flags |= 495 cpu_to_le16(DEVICE_POWER_FLAGS_NO_SLEEP_TILL_D3_MSK); 496 497 IWL_DEBUG_POWER(mvm, 498 "Sending device power command with flags = 0x%X\n", 499 cmd.flags); 500 501 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 502 &cmd); 503 } 504 505 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 506 { 507 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 508 509 if (!ether_addr_equal(mvmvif->uapsd_misbehaving_ap_addr, 510 vif->cfg.ap_addr)) 511 eth_zero_addr(mvmvif->uapsd_misbehaving_ap_addr); 512 } 513 514 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 515 struct ieee80211_vif *vif) 516 { 517 u8 *ap_sta_id = _data; 518 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 519 struct ieee80211_bss_conf *link_conf; 520 unsigned int link_id; 521 522 rcu_read_lock(); 523 for_each_vif_active_link(vif, link_conf, link_id) { 524 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 525 526 /* The ap_sta_id is not expected to change during current 527 * association so no explicit protection is needed 528 */ 529 if (link_info->ap_sta_id == *ap_sta_id) { 530 ether_addr_copy(mvmvif->uapsd_misbehaving_ap_addr, 531 vif->cfg.ap_addr); 532 break; 533 } 534 } 535 rcu_read_unlock(); 536 } 537 538 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 539 struct iwl_rx_cmd_buffer *rxb) 540 { 541 struct iwl_rx_packet *pkt = rxb_addr(rxb); 542 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 543 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 544 545 ieee80211_iterate_active_interfaces_atomic( 546 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 547 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 548 } 549 550 struct iwl_power_vifs { 551 struct iwl_mvm *mvm; 552 struct ieee80211_vif *bss_vif; 553 struct ieee80211_vif *p2p_vif; 554 struct ieee80211_vif *ap_vif; 555 struct ieee80211_vif *monitor_vif; 556 bool p2p_active; 557 bool bss_active; 558 bool ap_active; 559 bool monitor_active; 560 }; 561 562 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 563 struct ieee80211_vif *vif) 564 { 565 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 566 567 mvmvif->pm_enabled = false; 568 } 569 570 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 571 struct ieee80211_vif *vif) 572 { 573 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 574 bool *disable_ps = _data; 575 576 if (iwl_mvm_vif_is_active(mvmvif)) 577 *disable_ps |= mvmvif->ps_disabled; 578 } 579 580 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 581 struct ieee80211_vif *vif) 582 { 583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 584 struct iwl_power_vifs *power_iterator = _data; 585 bool active; 586 587 if (!mvmvif->uploaded) 588 return; 589 590 active = iwl_mvm_vif_is_active(mvmvif); 591 592 switch (ieee80211_vif_type_p2p(vif)) { 593 case NL80211_IFTYPE_P2P_DEVICE: 594 break; 595 596 case NL80211_IFTYPE_P2P_GO: 597 case NL80211_IFTYPE_AP: 598 /* only a single MAC of the same type */ 599 WARN_ON(power_iterator->ap_vif); 600 power_iterator->ap_vif = vif; 601 if (active) 602 power_iterator->ap_active = true; 603 break; 604 605 case NL80211_IFTYPE_MONITOR: 606 /* only a single MAC of the same type */ 607 WARN_ON(power_iterator->monitor_vif); 608 power_iterator->monitor_vif = vif; 609 if (active) 610 power_iterator->monitor_active = true; 611 break; 612 613 case NL80211_IFTYPE_P2P_CLIENT: 614 /* only a single MAC of the same type */ 615 WARN_ON(power_iterator->p2p_vif); 616 power_iterator->p2p_vif = vif; 617 if (active) 618 power_iterator->p2p_active = true; 619 break; 620 621 case NL80211_IFTYPE_STATION: 622 power_iterator->bss_vif = vif; 623 if (active) 624 power_iterator->bss_active = true; 625 break; 626 627 default: 628 break; 629 } 630 } 631 632 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 633 struct iwl_power_vifs *vifs) 634 { 635 struct iwl_mvm_vif *bss_mvmvif = NULL; 636 struct iwl_mvm_vif *p2p_mvmvif = NULL; 637 struct iwl_mvm_vif *ap_mvmvif = NULL; 638 bool client_same_channel = false; 639 bool ap_same_channel = false; 640 641 lockdep_assert_held(&mvm->mutex); 642 643 /* set pm_enable to false */ 644 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 645 IEEE80211_IFACE_ITER_NORMAL, 646 iwl_mvm_power_disable_pm_iterator, 647 NULL); 648 649 if (vifs->bss_vif) 650 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 651 652 if (vifs->p2p_vif) 653 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 654 655 if (vifs->ap_vif) 656 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 657 658 /* don't allow PM if any TDLS stations exist */ 659 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 660 return; 661 662 /* enable PM on bss if bss stand alone */ 663 if (bss_mvmvif && vifs->bss_active && !vifs->p2p_active && 664 !vifs->ap_active) { 665 bss_mvmvif->pm_enabled = true; 666 return; 667 } 668 669 /* enable PM on p2p if p2p stand alone */ 670 if (p2p_mvmvif && vifs->p2p_active && !vifs->bss_active && 671 !vifs->ap_active) { 672 p2p_mvmvif->pm_enabled = true; 673 return; 674 } 675 676 if (p2p_mvmvif && bss_mvmvif && vifs->bss_active && vifs->p2p_active) 677 client_same_channel = 678 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif); 679 680 if (bss_mvmvif && ap_mvmvif && vifs->bss_active && vifs->ap_active) 681 ap_same_channel = 682 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif); 683 684 /* clients are not stand alone: enable PM if DCM */ 685 if (!(client_same_channel || ap_same_channel)) { 686 if (bss_mvmvif && vifs->bss_active) 687 bss_mvmvif->pm_enabled = true; 688 if (p2p_mvmvif && vifs->p2p_active) 689 p2p_mvmvif->pm_enabled = true; 690 return; 691 } 692 693 /* 694 * There is only one channel in the system and there are only 695 * bss and p2p clients that share it 696 */ 697 if (client_same_channel && !vifs->ap_active) { 698 /* share same channel*/ 699 bss_mvmvif->pm_enabled = true; 700 p2p_mvmvif->pm_enabled = true; 701 } 702 } 703 704 #ifdef CONFIG_IWLWIFI_DEBUGFS 705 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 706 struct ieee80211_vif *vif, char *buf, 707 int bufsz) 708 { 709 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 710 struct iwl_mac_power_cmd cmd = {}; 711 int pos = 0; 712 713 mutex_lock(&mvm->mutex); 714 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 715 mutex_unlock(&mvm->mutex); 716 717 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 718 iwlmvm_mod_params.power_scheme); 719 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 720 le16_to_cpu(cmd.flags)); 721 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 722 le16_to_cpu(cmd.keep_alive_seconds)); 723 724 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 725 return pos; 726 727 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 728 (cmd.flags & 729 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 730 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 731 cmd.skip_dtim_periods); 732 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 733 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 734 le32_to_cpu(cmd.rx_data_timeout)); 735 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 736 le32_to_cpu(cmd.tx_data_timeout)); 737 } 738 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 739 pos += scnprintf(buf+pos, bufsz-pos, 740 "lprx_rssi_threshold = %d\n", 741 cmd.lprx_rssi_threshold); 742 743 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 744 return pos; 745 746 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 747 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 748 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 749 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 750 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 751 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 752 cmd.uapsd_ac_flags); 753 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 754 cmd.uapsd_max_sp); 755 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 756 cmd.heavy_tx_thld_packets); 757 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 758 cmd.heavy_rx_thld_packets); 759 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 760 cmd.heavy_tx_thld_percentage); 761 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 762 cmd.heavy_rx_thld_percentage); 763 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 764 (cmd.flags & 765 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 766 1 : 0); 767 768 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 769 return pos; 770 771 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 772 cmd.snooze_interval); 773 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 774 cmd.snooze_window); 775 776 return pos; 777 } 778 779 void 780 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 781 struct iwl_beacon_filter_cmd *cmd) 782 { 783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 784 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 785 786 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 787 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 788 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 789 cmd->bf_roaming_energy_delta = 790 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 791 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 792 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 793 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 794 cmd->bf_temp_threshold = 795 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 796 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 797 cmd->bf_temp_fast_filter = 798 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 799 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 800 cmd->bf_temp_slow_filter = 801 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 802 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 803 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 804 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 805 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 806 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 807 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 808 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 809 cmd->ba_enable_beacon_abort = 810 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 811 } 812 #endif 813 814 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 815 struct ieee80211_vif *vif, 816 struct iwl_beacon_filter_cmd *cmd, 817 u32 cmd_flags) 818 { 819 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 820 int ret; 821 822 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 823 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 824 return 0; 825 826 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 827 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 828 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 829 830 if (!ret) 831 mvmvif->bf_data.bf_enabled = true; 832 833 return ret; 834 } 835 836 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 837 struct ieee80211_vif *vif, 838 u32 flags) 839 { 840 struct iwl_beacon_filter_cmd cmd = { 841 IWL_BF_CMD_CONFIG_DEFAULTS, 842 .bf_enable_beacon_filter = cpu_to_le32(1), 843 }; 844 845 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 846 } 847 848 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 849 struct ieee80211_vif *vif, 850 u32 flags) 851 { 852 struct iwl_beacon_filter_cmd cmd = {}; 853 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 854 int ret; 855 856 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 857 return 0; 858 859 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 860 861 if (!ret) 862 mvmvif->bf_data.bf_enabled = false; 863 864 return ret; 865 } 866 867 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 868 struct ieee80211_vif *vif, 869 u32 flags) 870 { 871 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 872 } 873 874 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 875 { 876 bool disable_ps; 877 int ret; 878 879 /* disable PS if CAM */ 880 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 881 /* ...or if any of the vifs require PS to be off */ 882 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 883 IEEE80211_IFACE_ITER_NORMAL, 884 iwl_mvm_power_ps_disabled_iterator, 885 &disable_ps); 886 887 /* update device power state if it has changed */ 888 if (mvm->ps_disabled != disable_ps) { 889 bool old_ps_disabled = mvm->ps_disabled; 890 891 mvm->ps_disabled = disable_ps; 892 ret = iwl_mvm_power_update_device(mvm); 893 if (ret) { 894 mvm->ps_disabled = old_ps_disabled; 895 return ret; 896 } 897 } 898 899 return 0; 900 } 901 902 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 903 struct ieee80211_vif *vif) 904 { 905 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 906 struct iwl_beacon_filter_cmd cmd = { 907 IWL_BF_CMD_CONFIG_DEFAULTS, 908 .bf_enable_beacon_filter = cpu_to_le32(1), 909 }; 910 911 if (!mvmvif->bf_data.bf_enabled) 912 return 0; 913 914 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 915 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 916 917 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 918 mvm->ps_disabled || 919 !vif->cfg.ps || 920 iwl_mvm_vif_low_latency(mvmvif)); 921 922 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 923 } 924 925 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 926 { 927 struct iwl_power_vifs vifs = { 928 .mvm = mvm, 929 }; 930 int ret; 931 932 lockdep_assert_held(&mvm->mutex); 933 934 /* get vifs info */ 935 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 936 IEEE80211_IFACE_ITER_NORMAL, 937 iwl_mvm_power_get_vifs_iterator, &vifs); 938 939 ret = iwl_mvm_power_set_ps(mvm); 940 if (ret) 941 return ret; 942 943 if (vifs.bss_vif) 944 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 945 946 return 0; 947 } 948 949 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 950 { 951 struct iwl_power_vifs vifs = { 952 .mvm = mvm, 953 }; 954 int ret; 955 956 lockdep_assert_held(&mvm->mutex); 957 958 /* get vifs info */ 959 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 960 IEEE80211_IFACE_ITER_NORMAL, 961 iwl_mvm_power_get_vifs_iterator, &vifs); 962 963 iwl_mvm_power_set_pm(mvm, &vifs); 964 965 ret = iwl_mvm_power_set_ps(mvm); 966 if (ret) 967 return ret; 968 969 if (vifs.bss_vif) { 970 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 971 if (ret) 972 return ret; 973 } 974 975 if (vifs.p2p_vif) { 976 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 977 if (ret) 978 return ret; 979 } 980 981 if (vifs.bss_vif) 982 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 983 984 return 0; 985 } 986