1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2019, 2021 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->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->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 (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 241 ETH_ALEN)) 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_channel *chan; 283 bool radar_detect = false; 284 285 rcu_read_lock(); 286 chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf); 287 WARN_ON(!chanctx_conf); 288 if (chanctx_conf) { 289 chan = chanctx_conf->def.chan; 290 radar_detect = chan->flags & IEEE80211_CHAN_RADAR; 291 } 292 rcu_read_unlock(); 293 294 return radar_detect; 295 } 296 297 static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm, 298 struct ieee80211_vif *vif, 299 struct iwl_mac_power_cmd *cmd) 300 { 301 int dtimper = vif->bss_conf.dtim_period ?: 1; 302 int skip; 303 304 /* disable, in case we're supposed to override */ 305 cmd->skip_dtim_periods = 0; 306 cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 307 308 if (iwl_mvm_power_is_radar(vif)) 309 return; 310 311 if (dtimper >= 10) 312 return; 313 314 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 315 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP) 316 return; 317 skip = 2; 318 } else { 319 int dtimper_tu = dtimper * vif->bss_conf.beacon_int; 320 321 if (WARN_ON(!dtimper_tu)) 322 return; 323 /* configure skip over dtim up to 306TU - 314 msec */ 324 skip = max_t(u8, 1, 306 / dtimper_tu); 325 } 326 327 /* the firmware really expects "look at every X DTIMs", so add 1 */ 328 cmd->skip_dtim_periods = 1 + skip; 329 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 330 } 331 332 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 333 struct ieee80211_vif *vif, 334 struct iwl_mac_power_cmd *cmd) 335 { 336 int dtimper, bi; 337 int keep_alive; 338 struct iwl_mvm_vif *mvmvif __maybe_unused = 339 iwl_mvm_vif_from_mac80211(vif); 340 341 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 342 mvmvif->color)); 343 dtimper = vif->bss_conf.dtim_period; 344 bi = vif->bss_conf.beacon_int; 345 346 /* 347 * Regardless of power management state the driver must set 348 * keep alive period. FW will use it for sending keep alive NDPs 349 * immediately after association. Check that keep alive period 350 * is at least 3 * DTIM 351 */ 352 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 353 USEC_PER_SEC); 354 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 355 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 356 357 if (mvm->ps_disabled) 358 return; 359 360 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 361 362 if (!vif->bss_conf.ps || !mvmvif->pm_enabled) 363 return; 364 365 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 366 (!fw_has_capa(&mvm->fw->ucode_capa, 367 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 368 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 369 return; 370 371 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 372 373 if (vif->bss_conf.beacon_rate && 374 (vif->bss_conf.beacon_rate->bitrate == 10 || 375 vif->bss_conf.beacon_rate->bitrate == 60)) { 376 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 377 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 378 } 379 380 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 381 382 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 383 cmd->rx_data_timeout = 384 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 385 cmd->tx_data_timeout = 386 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 387 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 388 fw_has_capa(&mvm->fw->ucode_capa, 389 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 390 cmd->tx_data_timeout = 391 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 392 cmd->rx_data_timeout = 393 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 394 } else { 395 cmd->rx_data_timeout = 396 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 397 cmd->tx_data_timeout = 398 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 399 } 400 401 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 402 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 403 404 #ifdef CONFIG_IWLWIFI_DEBUGFS 405 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 406 cmd->keep_alive_seconds = 407 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 408 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 409 if (mvmvif->dbgfs_pm.skip_over_dtim) 410 cmd->flags |= 411 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 412 else 413 cmd->flags &= 414 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 415 } 416 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 417 cmd->rx_data_timeout = 418 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 419 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 420 cmd->tx_data_timeout = 421 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 422 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 423 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 424 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 425 if (mvmvif->dbgfs_pm.lprx_ena) 426 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 427 else 428 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 429 } 430 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 431 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 432 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 433 if (mvmvif->dbgfs_pm.snooze_ena) 434 cmd->flags |= 435 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 436 else 437 cmd->flags &= 438 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 439 } 440 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 441 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 442 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 443 cmd->flags |= cpu_to_le16(flag); 444 else 445 cmd->flags &= cpu_to_le16(flag); 446 } 447 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 448 } 449 450 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 451 struct ieee80211_vif *vif) 452 { 453 struct iwl_mac_power_cmd cmd = {}; 454 455 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 456 iwl_mvm_power_log(mvm, &cmd); 457 #ifdef CONFIG_IWLWIFI_DEBUGFS 458 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 459 #endif 460 461 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 462 sizeof(cmd), &cmd); 463 } 464 465 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 466 { 467 struct iwl_device_power_cmd cmd = { 468 .flags = 0, 469 }; 470 471 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 472 mvm->ps_disabled = true; 473 474 if (!mvm->ps_disabled) 475 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 476 477 #ifdef CONFIG_IWLWIFI_DEBUGFS 478 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 479 mvm->disable_power_off_d3 : mvm->disable_power_off) 480 cmd.flags &= 481 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 482 #endif 483 if (mvm->ext_clock_valid) 484 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 485 486 IWL_DEBUG_POWER(mvm, 487 "Sending device power command with flags = 0x%X\n", 488 cmd.flags); 489 490 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 491 &cmd); 492 } 493 494 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 495 { 496 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 497 498 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid, 499 ETH_ALEN)) 500 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid); 501 } 502 503 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 504 struct ieee80211_vif *vif) 505 { 506 u8 *ap_sta_id = _data; 507 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 508 509 /* The ap_sta_id is not expected to change during current association 510 * so no explicit protection is needed 511 */ 512 if (mvmvif->ap_sta_id == *ap_sta_id) 513 memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid, 514 ETH_ALEN); 515 } 516 517 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 518 struct iwl_rx_cmd_buffer *rxb) 519 { 520 struct iwl_rx_packet *pkt = rxb_addr(rxb); 521 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 522 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 523 524 ieee80211_iterate_active_interfaces_atomic( 525 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 526 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 527 } 528 529 struct iwl_power_vifs { 530 struct iwl_mvm *mvm; 531 struct ieee80211_vif *bss_vif; 532 struct ieee80211_vif *p2p_vif; 533 struct ieee80211_vif *ap_vif; 534 struct ieee80211_vif *monitor_vif; 535 bool p2p_active; 536 bool bss_active; 537 bool ap_active; 538 bool monitor_active; 539 }; 540 541 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 542 struct ieee80211_vif *vif) 543 { 544 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 545 546 mvmvif->pm_enabled = false; 547 } 548 549 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 550 struct ieee80211_vif *vif) 551 { 552 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 553 bool *disable_ps = _data; 554 555 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX) 556 *disable_ps |= mvmvif->ps_disabled; 557 } 558 559 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 560 struct ieee80211_vif *vif) 561 { 562 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 563 struct iwl_power_vifs *power_iterator = _data; 564 bool active = mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < NUM_PHY_CTX; 565 566 if (!mvmvif->uploaded) 567 return; 568 569 switch (ieee80211_vif_type_p2p(vif)) { 570 case NL80211_IFTYPE_P2P_DEVICE: 571 break; 572 573 case NL80211_IFTYPE_P2P_GO: 574 case NL80211_IFTYPE_AP: 575 /* only a single MAC of the same type */ 576 WARN_ON(power_iterator->ap_vif); 577 power_iterator->ap_vif = vif; 578 if (active) 579 power_iterator->ap_active = true; 580 break; 581 582 case NL80211_IFTYPE_MONITOR: 583 /* only a single MAC of the same type */ 584 WARN_ON(power_iterator->monitor_vif); 585 power_iterator->monitor_vif = vif; 586 if (active) 587 power_iterator->monitor_active = true; 588 break; 589 590 case NL80211_IFTYPE_P2P_CLIENT: 591 /* only a single MAC of the same type */ 592 WARN_ON(power_iterator->p2p_vif); 593 power_iterator->p2p_vif = vif; 594 if (active) 595 power_iterator->p2p_active = true; 596 break; 597 598 case NL80211_IFTYPE_STATION: 599 power_iterator->bss_vif = vif; 600 if (active) 601 power_iterator->bss_active = true; 602 break; 603 604 default: 605 break; 606 } 607 } 608 609 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 610 struct iwl_power_vifs *vifs) 611 { 612 struct iwl_mvm_vif *bss_mvmvif = NULL; 613 struct iwl_mvm_vif *p2p_mvmvif = NULL; 614 struct iwl_mvm_vif *ap_mvmvif = NULL; 615 bool client_same_channel = false; 616 bool ap_same_channel = false; 617 618 lockdep_assert_held(&mvm->mutex); 619 620 /* set pm_enable to false */ 621 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 622 IEEE80211_IFACE_ITER_NORMAL, 623 iwl_mvm_power_disable_pm_iterator, 624 NULL); 625 626 if (vifs->bss_vif) 627 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 628 629 if (vifs->p2p_vif) 630 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 631 632 if (vifs->ap_vif) 633 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 634 635 /* don't allow PM if any TDLS stations exist */ 636 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 637 return; 638 639 /* enable PM on bss if bss stand alone */ 640 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) { 641 bss_mvmvif->pm_enabled = true; 642 return; 643 } 644 645 /* enable PM on p2p if p2p stand alone */ 646 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) { 647 p2p_mvmvif->pm_enabled = true; 648 return; 649 } 650 651 if (vifs->bss_active && vifs->p2p_active) 652 client_same_channel = (bss_mvmvif->phy_ctxt->id == 653 p2p_mvmvif->phy_ctxt->id); 654 if (vifs->bss_active && vifs->ap_active) 655 ap_same_channel = (bss_mvmvif->phy_ctxt->id == 656 ap_mvmvif->phy_ctxt->id); 657 658 /* clients are not stand alone: enable PM if DCM */ 659 if (!(client_same_channel || ap_same_channel)) { 660 if (vifs->bss_active) 661 bss_mvmvif->pm_enabled = true; 662 if (vifs->p2p_active) 663 p2p_mvmvif->pm_enabled = true; 664 return; 665 } 666 667 /* 668 * There is only one channel in the system and there are only 669 * bss and p2p clients that share it 670 */ 671 if (client_same_channel && !vifs->ap_active) { 672 /* share same channel*/ 673 bss_mvmvif->pm_enabled = true; 674 p2p_mvmvif->pm_enabled = true; 675 } 676 } 677 678 #ifdef CONFIG_IWLWIFI_DEBUGFS 679 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 680 struct ieee80211_vif *vif, char *buf, 681 int bufsz) 682 { 683 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 684 struct iwl_mac_power_cmd cmd = {}; 685 int pos = 0; 686 687 mutex_lock(&mvm->mutex); 688 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 689 mutex_unlock(&mvm->mutex); 690 691 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 692 iwlmvm_mod_params.power_scheme); 693 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 694 le16_to_cpu(cmd.flags)); 695 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 696 le16_to_cpu(cmd.keep_alive_seconds)); 697 698 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 699 return pos; 700 701 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 702 (cmd.flags & 703 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 704 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 705 cmd.skip_dtim_periods); 706 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 707 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 708 le32_to_cpu(cmd.rx_data_timeout)); 709 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 710 le32_to_cpu(cmd.tx_data_timeout)); 711 } 712 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 713 pos += scnprintf(buf+pos, bufsz-pos, 714 "lprx_rssi_threshold = %d\n", 715 cmd.lprx_rssi_threshold); 716 717 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 718 return pos; 719 720 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 721 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 722 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 723 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 724 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 725 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 726 cmd.uapsd_ac_flags); 727 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 728 cmd.uapsd_max_sp); 729 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 730 cmd.heavy_tx_thld_packets); 731 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 732 cmd.heavy_rx_thld_packets); 733 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 734 cmd.heavy_tx_thld_percentage); 735 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 736 cmd.heavy_rx_thld_percentage); 737 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 738 (cmd.flags & 739 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 740 1 : 0); 741 742 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 743 return pos; 744 745 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 746 cmd.snooze_interval); 747 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 748 cmd.snooze_window); 749 750 return pos; 751 } 752 753 void 754 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 755 struct iwl_beacon_filter_cmd *cmd) 756 { 757 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 758 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 759 760 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 761 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 762 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 763 cmd->bf_roaming_energy_delta = 764 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 765 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 766 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 767 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 768 cmd->bf_temp_threshold = 769 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 770 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 771 cmd->bf_temp_fast_filter = 772 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 773 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 774 cmd->bf_temp_slow_filter = 775 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 776 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 777 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 778 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 779 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 780 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 781 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 782 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 783 cmd->ba_enable_beacon_abort = 784 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 785 } 786 #endif 787 788 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 789 struct ieee80211_vif *vif, 790 struct iwl_beacon_filter_cmd *cmd, 791 u32 cmd_flags) 792 { 793 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 794 int ret; 795 796 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 797 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 798 return 0; 799 800 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 801 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 802 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 803 804 if (!ret) 805 mvmvif->bf_data.bf_enabled = true; 806 807 return ret; 808 } 809 810 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 811 struct ieee80211_vif *vif, 812 u32 flags) 813 { 814 struct iwl_beacon_filter_cmd cmd = { 815 IWL_BF_CMD_CONFIG_DEFAULTS, 816 .bf_enable_beacon_filter = cpu_to_le32(1), 817 }; 818 819 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 820 } 821 822 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 823 struct ieee80211_vif *vif, 824 u32 flags) 825 { 826 struct iwl_beacon_filter_cmd cmd = {}; 827 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 828 int ret; 829 830 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 831 return 0; 832 833 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 834 835 if (!ret) 836 mvmvif->bf_data.bf_enabled = false; 837 838 return ret; 839 } 840 841 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 842 struct ieee80211_vif *vif, 843 u32 flags) 844 { 845 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 846 } 847 848 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 849 { 850 bool disable_ps; 851 int ret; 852 853 /* disable PS if CAM */ 854 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 855 /* ...or if any of the vifs require PS to be off */ 856 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 857 IEEE80211_IFACE_ITER_NORMAL, 858 iwl_mvm_power_ps_disabled_iterator, 859 &disable_ps); 860 861 /* update device power state if it has changed */ 862 if (mvm->ps_disabled != disable_ps) { 863 bool old_ps_disabled = mvm->ps_disabled; 864 865 mvm->ps_disabled = disable_ps; 866 ret = iwl_mvm_power_update_device(mvm); 867 if (ret) { 868 mvm->ps_disabled = old_ps_disabled; 869 return ret; 870 } 871 } 872 873 return 0; 874 } 875 876 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 877 struct ieee80211_vif *vif) 878 { 879 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 880 struct iwl_beacon_filter_cmd cmd = { 881 IWL_BF_CMD_CONFIG_DEFAULTS, 882 .bf_enable_beacon_filter = cpu_to_le32(1), 883 }; 884 885 if (!mvmvif->bf_data.bf_enabled) 886 return 0; 887 888 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 889 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 890 891 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 892 mvm->ps_disabled || 893 !vif->bss_conf.ps || 894 iwl_mvm_vif_low_latency(mvmvif)); 895 896 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 897 } 898 899 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 900 { 901 struct iwl_power_vifs vifs = { 902 .mvm = mvm, 903 }; 904 int ret; 905 906 lockdep_assert_held(&mvm->mutex); 907 908 /* get vifs info */ 909 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 910 IEEE80211_IFACE_ITER_NORMAL, 911 iwl_mvm_power_get_vifs_iterator, &vifs); 912 913 ret = iwl_mvm_power_set_ps(mvm); 914 if (ret) 915 return ret; 916 917 if (vifs.bss_vif) 918 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 919 920 return 0; 921 } 922 923 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 924 { 925 struct iwl_power_vifs vifs = { 926 .mvm = mvm, 927 }; 928 int ret; 929 930 lockdep_assert_held(&mvm->mutex); 931 932 /* get vifs info */ 933 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 934 IEEE80211_IFACE_ITER_NORMAL, 935 iwl_mvm_power_get_vifs_iterator, &vifs); 936 937 iwl_mvm_power_set_pm(mvm, &vifs); 938 939 ret = iwl_mvm_power_set_ps(mvm); 940 if (ret) 941 return ret; 942 943 if (vifs.bss_vif) { 944 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 945 if (ret) 946 return ret; 947 } 948 949 if (vifs.p2p_vif) { 950 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 951 if (ret) 952 return ret; 953 } 954 955 if (vifs.bss_vif) 956 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 957 958 return 0; 959 } 960