1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2019 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 #ifdef CONFIG_IWLWIFI_DEBUGFS 132 /* set advanced pm flag with no uapsd ACs to enable ps-poll */ 133 if (mvmvif->dbgfs_pm.use_ps_poll) { 134 cmd->flags |= cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 135 return; 136 } 137 #endif 138 139 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) { 140 if (!mvmvif->queue_params[ac].uapsd) 141 continue; 142 143 if (!test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 144 cmd->flags |= 145 cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK); 146 147 cmd->uapsd_ac_flags |= BIT(ac); 148 149 /* QNDP TID - the highest TID with no admission control */ 150 if (!tid_found && !mvmvif->queue_params[ac].acm) { 151 tid_found = true; 152 switch (ac) { 153 case IEEE80211_AC_VO: 154 cmd->qndp_tid = 6; 155 break; 156 case IEEE80211_AC_VI: 157 cmd->qndp_tid = 5; 158 break; 159 case IEEE80211_AC_BE: 160 cmd->qndp_tid = 0; 161 break; 162 case IEEE80211_AC_BK: 163 cmd->qndp_tid = 1; 164 break; 165 } 166 } 167 } 168 169 cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK); 170 171 if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) | 172 BIT(IEEE80211_AC_VI) | 173 BIT(IEEE80211_AC_BE) | 174 BIT(IEEE80211_AC_BK))) { 175 cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 176 cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL); 177 cmd->snooze_window = 178 test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 179 cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) : 180 cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW); 181 } 182 183 cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len; 184 185 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) || 186 cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) { 187 cmd->rx_data_timeout_uapsd = 188 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 189 cmd->tx_data_timeout_uapsd = 190 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 191 } else { 192 cmd->rx_data_timeout_uapsd = 193 cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT); 194 cmd->tx_data_timeout_uapsd = 195 cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT); 196 } 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->bss_conf.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->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 switch (ieee80211_vif_type_p2p(vif)) { 567 case NL80211_IFTYPE_P2P_DEVICE: 568 break; 569 570 case NL80211_IFTYPE_P2P_GO: 571 case NL80211_IFTYPE_AP: 572 /* only a single MAC of the same type */ 573 WARN_ON(power_iterator->ap_vif); 574 power_iterator->ap_vif = vif; 575 if (active) 576 power_iterator->ap_active = true; 577 break; 578 579 case NL80211_IFTYPE_MONITOR: 580 /* only a single MAC of the same type */ 581 WARN_ON(power_iterator->monitor_vif); 582 power_iterator->monitor_vif = vif; 583 if (active) 584 power_iterator->monitor_active = true; 585 break; 586 587 case NL80211_IFTYPE_P2P_CLIENT: 588 /* only a single MAC of the same type */ 589 WARN_ON(power_iterator->p2p_vif); 590 power_iterator->p2p_vif = vif; 591 if (active) 592 power_iterator->p2p_active = true; 593 break; 594 595 case NL80211_IFTYPE_STATION: 596 power_iterator->bss_vif = vif; 597 if (active) 598 power_iterator->bss_active = true; 599 break; 600 601 default: 602 break; 603 } 604 } 605 606 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 607 struct iwl_power_vifs *vifs) 608 { 609 struct iwl_mvm_vif *bss_mvmvif = NULL; 610 struct iwl_mvm_vif *p2p_mvmvif = NULL; 611 struct iwl_mvm_vif *ap_mvmvif = NULL; 612 bool client_same_channel = false; 613 bool ap_same_channel = false; 614 615 lockdep_assert_held(&mvm->mutex); 616 617 /* set pm_enable to false */ 618 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 619 IEEE80211_IFACE_ITER_NORMAL, 620 iwl_mvm_power_disable_pm_iterator, 621 NULL); 622 623 if (vifs->bss_vif) 624 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 625 626 if (vifs->p2p_vif) 627 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 628 629 if (vifs->ap_vif) 630 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 631 632 /* don't allow PM if any TDLS stations exist */ 633 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 634 return; 635 636 /* enable PM on bss if bss stand alone */ 637 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) { 638 bss_mvmvif->pm_enabled = true; 639 return; 640 } 641 642 /* enable PM on p2p if p2p stand alone */ 643 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) { 644 p2p_mvmvif->pm_enabled = true; 645 return; 646 } 647 648 if (vifs->bss_active && vifs->p2p_active) 649 client_same_channel = (bss_mvmvif->phy_ctxt->id == 650 p2p_mvmvif->phy_ctxt->id); 651 if (vifs->bss_active && vifs->ap_active) 652 ap_same_channel = (bss_mvmvif->phy_ctxt->id == 653 ap_mvmvif->phy_ctxt->id); 654 655 /* clients are not stand alone: enable PM if DCM */ 656 if (!(client_same_channel || ap_same_channel)) { 657 if (vifs->bss_active) 658 bss_mvmvif->pm_enabled = true; 659 if (vifs->p2p_active) 660 p2p_mvmvif->pm_enabled = true; 661 return; 662 } 663 664 /* 665 * There is only one channel in the system and there are only 666 * bss and p2p clients that share it 667 */ 668 if (client_same_channel && !vifs->ap_active) { 669 /* share same channel*/ 670 bss_mvmvif->pm_enabled = true; 671 p2p_mvmvif->pm_enabled = true; 672 } 673 } 674 675 #ifdef CONFIG_IWLWIFI_DEBUGFS 676 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 677 struct ieee80211_vif *vif, char *buf, 678 int bufsz) 679 { 680 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 681 struct iwl_mac_power_cmd cmd = {}; 682 int pos = 0; 683 684 mutex_lock(&mvm->mutex); 685 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 686 mutex_unlock(&mvm->mutex); 687 688 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 689 iwlmvm_mod_params.power_scheme); 690 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 691 le16_to_cpu(cmd.flags)); 692 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 693 le16_to_cpu(cmd.keep_alive_seconds)); 694 695 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 696 return pos; 697 698 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 699 (cmd.flags & 700 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 701 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 702 cmd.skip_dtim_periods); 703 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 704 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 705 le32_to_cpu(cmd.rx_data_timeout)); 706 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 707 le32_to_cpu(cmd.tx_data_timeout)); 708 } 709 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 710 pos += scnprintf(buf+pos, bufsz-pos, 711 "lprx_rssi_threshold = %d\n", 712 cmd.lprx_rssi_threshold); 713 714 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 715 return pos; 716 717 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 718 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 719 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 720 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 721 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 722 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 723 cmd.uapsd_ac_flags); 724 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 725 cmd.uapsd_max_sp); 726 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 727 cmd.heavy_tx_thld_packets); 728 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 729 cmd.heavy_rx_thld_packets); 730 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 731 cmd.heavy_tx_thld_percentage); 732 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 733 cmd.heavy_rx_thld_percentage); 734 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 735 (cmd.flags & 736 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 737 1 : 0); 738 739 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 740 return pos; 741 742 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 743 cmd.snooze_interval); 744 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 745 cmd.snooze_window); 746 747 return pos; 748 } 749 750 void 751 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 752 struct iwl_beacon_filter_cmd *cmd) 753 { 754 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 755 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 756 757 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 758 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 759 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 760 cmd->bf_roaming_energy_delta = 761 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 762 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 763 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 764 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 765 cmd->bf_temp_threshold = 766 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 767 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 768 cmd->bf_temp_fast_filter = 769 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 770 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 771 cmd->bf_temp_slow_filter = 772 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 773 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 774 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 775 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 776 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 777 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 778 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 779 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 780 cmd->ba_enable_beacon_abort = 781 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 782 } 783 #endif 784 785 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 786 struct ieee80211_vif *vif, 787 struct iwl_beacon_filter_cmd *cmd, 788 u32 cmd_flags) 789 { 790 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 791 int ret; 792 793 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 794 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 795 return 0; 796 797 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 798 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 799 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 800 801 if (!ret) 802 mvmvif->bf_data.bf_enabled = true; 803 804 return ret; 805 } 806 807 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 808 struct ieee80211_vif *vif, 809 u32 flags) 810 { 811 struct iwl_beacon_filter_cmd cmd = { 812 IWL_BF_CMD_CONFIG_DEFAULTS, 813 .bf_enable_beacon_filter = cpu_to_le32(1), 814 }; 815 816 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 817 } 818 819 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 820 struct ieee80211_vif *vif, 821 u32 flags) 822 { 823 struct iwl_beacon_filter_cmd cmd = {}; 824 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 825 int ret; 826 827 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 828 return 0; 829 830 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 831 832 if (!ret) 833 mvmvif->bf_data.bf_enabled = false; 834 835 return ret; 836 } 837 838 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 839 struct ieee80211_vif *vif, 840 u32 flags) 841 { 842 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 843 } 844 845 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 846 { 847 bool disable_ps; 848 int ret; 849 850 /* disable PS if CAM */ 851 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 852 /* ...or if any of the vifs require PS to be off */ 853 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 854 IEEE80211_IFACE_ITER_NORMAL, 855 iwl_mvm_power_ps_disabled_iterator, 856 &disable_ps); 857 858 /* update device power state if it has changed */ 859 if (mvm->ps_disabled != disable_ps) { 860 bool old_ps_disabled = mvm->ps_disabled; 861 862 mvm->ps_disabled = disable_ps; 863 ret = iwl_mvm_power_update_device(mvm); 864 if (ret) { 865 mvm->ps_disabled = old_ps_disabled; 866 return ret; 867 } 868 } 869 870 return 0; 871 } 872 873 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 874 struct ieee80211_vif *vif) 875 { 876 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 877 struct iwl_beacon_filter_cmd cmd = { 878 IWL_BF_CMD_CONFIG_DEFAULTS, 879 .bf_enable_beacon_filter = cpu_to_le32(1), 880 }; 881 882 if (!mvmvif->bf_data.bf_enabled) 883 return 0; 884 885 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 886 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 887 888 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 889 mvm->ps_disabled || 890 !vif->bss_conf.ps || 891 iwl_mvm_vif_low_latency(mvmvif)); 892 893 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 894 } 895 896 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 897 { 898 struct iwl_power_vifs vifs = { 899 .mvm = mvm, 900 }; 901 int ret; 902 903 lockdep_assert_held(&mvm->mutex); 904 905 /* get vifs info */ 906 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 907 IEEE80211_IFACE_ITER_NORMAL, 908 iwl_mvm_power_get_vifs_iterator, &vifs); 909 910 ret = iwl_mvm_power_set_ps(mvm); 911 if (ret) 912 return ret; 913 914 if (vifs.bss_vif) 915 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 916 917 return 0; 918 } 919 920 int iwl_mvm_power_update_mac(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 iwl_mvm_power_set_pm(mvm, &vifs); 935 936 ret = iwl_mvm_power_set_ps(mvm); 937 if (ret) 938 return ret; 939 940 if (vifs.bss_vif) { 941 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 942 if (ret) 943 return ret; 944 } 945 946 if (vifs.p2p_vif) { 947 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 948 if (ret) 949 return ret; 950 } 951 952 if (vifs.bss_vif) 953 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 954 955 return 0; 956 } 957