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->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 (!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_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 306TU - 314 msec */ 331 skip = max_t(u8, 1, 306 / dtimper_tu); 332 } 333 334 /* the firmware really expects "look at every X DTIMs", so add 1 */ 335 cmd->skip_dtim_periods = 1 + skip; 336 cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 337 } 338 339 static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, 340 struct ieee80211_vif *vif, 341 struct iwl_mac_power_cmd *cmd) 342 { 343 int dtimper, bi; 344 int keep_alive; 345 struct iwl_mvm_vif *mvmvif __maybe_unused = 346 iwl_mvm_vif_from_mac80211(vif); 347 348 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 349 mvmvif->color)); 350 dtimper = vif->bss_conf.dtim_period; 351 bi = vif->bss_conf.beacon_int; 352 353 /* 354 * Regardless of power management state the driver must set 355 * keep alive period. FW will use it for sending keep alive NDPs 356 * immediately after association. Check that keep alive period 357 * is at least 3 * DTIM 358 */ 359 keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), 360 USEC_PER_SEC); 361 keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); 362 cmd->keep_alive_seconds = cpu_to_le16(keep_alive); 363 364 if (mvm->ps_disabled) 365 return; 366 367 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); 368 369 if (!vif->cfg.ps || !mvmvif->pm_enabled) 370 return; 371 372 if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 373 (!fw_has_capa(&mvm->fw->ucode_capa, 374 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) || 375 !IWL_MVM_P2P_LOWLATENCY_PS_ENABLE)) 376 return; 377 378 cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); 379 380 if (vif->bss_conf.beacon_rate && 381 (vif->bss_conf.beacon_rate->bitrate == 10 || 382 vif->bss_conf.beacon_rate->bitrate == 60)) { 383 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 384 cmd->lprx_rssi_threshold = POWER_LPRX_RSSI_THRESHOLD; 385 } 386 387 iwl_mvm_power_config_skip_dtim(mvm, vif, cmd); 388 389 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) { 390 cmd->rx_data_timeout = 391 cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT); 392 cmd->tx_data_timeout = 393 cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT); 394 } else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p && 395 fw_has_capa(&mvm->fw->ucode_capa, 396 IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) { 397 cmd->tx_data_timeout = 398 cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT); 399 cmd->rx_data_timeout = 400 cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT); 401 } else { 402 cmd->rx_data_timeout = 403 cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT); 404 cmd->tx_data_timeout = 405 cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT); 406 } 407 408 if (iwl_mvm_power_allow_uapsd(mvm, vif)) 409 iwl_mvm_power_configure_uapsd(mvm, vif, cmd); 410 411 #ifdef CONFIG_IWLWIFI_DEBUGFS 412 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) 413 cmd->keep_alive_seconds = 414 cpu_to_le16(mvmvif->dbgfs_pm.keep_alive_seconds); 415 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { 416 if (mvmvif->dbgfs_pm.skip_over_dtim) 417 cmd->flags |= 418 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); 419 else 420 cmd->flags &= 421 cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); 422 } 423 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) 424 cmd->rx_data_timeout = 425 cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); 426 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) 427 cmd->tx_data_timeout = 428 cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); 429 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) 430 cmd->skip_dtim_periods = mvmvif->dbgfs_pm.skip_dtim_periods; 431 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { 432 if (mvmvif->dbgfs_pm.lprx_ena) 433 cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); 434 else 435 cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); 436 } 437 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) 438 cmd->lprx_rssi_threshold = mvmvif->dbgfs_pm.lprx_rssi_threshold; 439 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) { 440 if (mvmvif->dbgfs_pm.snooze_ena) 441 cmd->flags |= 442 cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK); 443 else 444 cmd->flags &= 445 cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK); 446 } 447 if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) { 448 u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK; 449 if (mvmvif->dbgfs_pm.uapsd_misbehaving) 450 cmd->flags |= cpu_to_le16(flag); 451 else 452 cmd->flags &= cpu_to_le16(flag); 453 } 454 #endif /* CONFIG_IWLWIFI_DEBUGFS */ 455 } 456 457 static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm, 458 struct ieee80211_vif *vif) 459 { 460 struct iwl_mac_power_cmd cmd = {}; 461 462 iwl_mvm_power_build_cmd(mvm, vif, &cmd); 463 iwl_mvm_power_log(mvm, &cmd); 464 #ifdef CONFIG_IWLWIFI_DEBUGFS 465 memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd)); 466 #endif 467 468 return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0, 469 sizeof(cmd), &cmd); 470 } 471 472 int iwl_mvm_power_update_device(struct iwl_mvm *mvm) 473 { 474 struct iwl_device_power_cmd cmd = { 475 .flags = 0, 476 }; 477 478 if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) 479 mvm->ps_disabled = true; 480 481 if (!mvm->ps_disabled) 482 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 483 484 #ifdef CONFIG_IWLWIFI_DEBUGFS 485 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status) ? 486 mvm->disable_power_off_d3 : mvm->disable_power_off) 487 cmd.flags &= 488 cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK); 489 #endif 490 if (mvm->ext_clock_valid) 491 cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_32K_CLK_VALID_MSK); 492 493 IWL_DEBUG_POWER(mvm, 494 "Sending device power command with flags = 0x%X\n", 495 cmd.flags); 496 497 return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd), 498 &cmd); 499 } 500 501 void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 502 { 503 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 504 505 if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid, 506 ETH_ALEN)) 507 eth_zero_addr(mvmvif->uapsd_misbehaving_bssid); 508 } 509 510 static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac, 511 struct ieee80211_vif *vif) 512 { 513 u8 *ap_sta_id = _data; 514 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 515 516 /* The ap_sta_id is not expected to change during current association 517 * so no explicit protection is needed 518 */ 519 if (mvmvif->deflink.ap_sta_id == *ap_sta_id) 520 memcpy(mvmvif->uapsd_misbehaving_bssid, 521 vif->bss_conf.bssid, 522 ETH_ALEN); 523 } 524 525 void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm, 526 struct iwl_rx_cmd_buffer *rxb) 527 { 528 struct iwl_rx_packet *pkt = rxb_addr(rxb); 529 struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data; 530 u8 ap_sta_id = le32_to_cpu(notif->sta_id); 531 532 ieee80211_iterate_active_interfaces_atomic( 533 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 534 iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id); 535 } 536 537 struct iwl_power_vifs { 538 struct iwl_mvm *mvm; 539 struct ieee80211_vif *bss_vif; 540 struct ieee80211_vif *p2p_vif; 541 struct ieee80211_vif *ap_vif; 542 struct ieee80211_vif *monitor_vif; 543 bool p2p_active; 544 bool bss_active; 545 bool ap_active; 546 bool monitor_active; 547 }; 548 549 static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac, 550 struct ieee80211_vif *vif) 551 { 552 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 553 554 mvmvif->pm_enabled = false; 555 } 556 557 static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac, 558 struct ieee80211_vif *vif) 559 { 560 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 561 bool *disable_ps = _data; 562 563 if (iwl_mvm_vif_is_active(mvmvif)) 564 *disable_ps |= mvmvif->ps_disabled; 565 } 566 567 static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac, 568 struct ieee80211_vif *vif) 569 { 570 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 571 struct iwl_power_vifs *power_iterator = _data; 572 bool active; 573 574 if (!mvmvif->uploaded) 575 return; 576 577 active = iwl_mvm_vif_is_active(mvmvif); 578 579 switch (ieee80211_vif_type_p2p(vif)) { 580 case NL80211_IFTYPE_P2P_DEVICE: 581 break; 582 583 case NL80211_IFTYPE_P2P_GO: 584 case NL80211_IFTYPE_AP: 585 /* only a single MAC of the same type */ 586 WARN_ON(power_iterator->ap_vif); 587 power_iterator->ap_vif = vif; 588 if (active) 589 power_iterator->ap_active = true; 590 break; 591 592 case NL80211_IFTYPE_MONITOR: 593 /* only a single MAC of the same type */ 594 WARN_ON(power_iterator->monitor_vif); 595 power_iterator->monitor_vif = vif; 596 if (active) 597 power_iterator->monitor_active = true; 598 break; 599 600 case NL80211_IFTYPE_P2P_CLIENT: 601 /* only a single MAC of the same type */ 602 WARN_ON(power_iterator->p2p_vif); 603 power_iterator->p2p_vif = vif; 604 if (active) 605 power_iterator->p2p_active = true; 606 break; 607 608 case NL80211_IFTYPE_STATION: 609 power_iterator->bss_vif = vif; 610 if (active) 611 power_iterator->bss_active = true; 612 break; 613 614 default: 615 break; 616 } 617 } 618 619 static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm, 620 struct iwl_power_vifs *vifs) 621 { 622 struct iwl_mvm_vif *bss_mvmvif = NULL; 623 struct iwl_mvm_vif *p2p_mvmvif = NULL; 624 struct iwl_mvm_vif *ap_mvmvif = NULL; 625 bool client_same_channel = false; 626 bool ap_same_channel = false; 627 628 lockdep_assert_held(&mvm->mutex); 629 630 /* set pm_enable to false */ 631 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 632 IEEE80211_IFACE_ITER_NORMAL, 633 iwl_mvm_power_disable_pm_iterator, 634 NULL); 635 636 if (vifs->bss_vif) 637 bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif); 638 639 if (vifs->p2p_vif) 640 p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif); 641 642 if (vifs->ap_vif) 643 ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif); 644 645 /* don't allow PM if any TDLS stations exist */ 646 if (iwl_mvm_tdls_sta_count(mvm, NULL)) 647 return; 648 649 /* enable PM on bss if bss stand alone */ 650 if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) { 651 bss_mvmvif->pm_enabled = true; 652 return; 653 } 654 655 /* enable PM on p2p if p2p stand alone */ 656 if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) { 657 p2p_mvmvif->pm_enabled = true; 658 return; 659 } 660 661 if (vifs->bss_active && vifs->p2p_active) 662 client_same_channel = 663 iwl_mvm_have_links_same_channel(bss_mvmvif, p2p_mvmvif); 664 665 if (vifs->bss_active && vifs->ap_active) 666 ap_same_channel = 667 iwl_mvm_have_links_same_channel(bss_mvmvif, ap_mvmvif); 668 669 /* clients are not stand alone: enable PM if DCM */ 670 if (!(client_same_channel || ap_same_channel)) { 671 if (vifs->bss_active) 672 bss_mvmvif->pm_enabled = true; 673 if (vifs->p2p_active) 674 p2p_mvmvif->pm_enabled = true; 675 return; 676 } 677 678 /* 679 * There is only one channel in the system and there are only 680 * bss and p2p clients that share it 681 */ 682 if (client_same_channel && !vifs->ap_active) { 683 /* share same channel*/ 684 bss_mvmvif->pm_enabled = true; 685 p2p_mvmvif->pm_enabled = true; 686 } 687 } 688 689 #ifdef CONFIG_IWLWIFI_DEBUGFS 690 int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm, 691 struct ieee80211_vif *vif, char *buf, 692 int bufsz) 693 { 694 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 695 struct iwl_mac_power_cmd cmd = {}; 696 int pos = 0; 697 698 mutex_lock(&mvm->mutex); 699 memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd)); 700 mutex_unlock(&mvm->mutex); 701 702 pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", 703 iwlmvm_mod_params.power_scheme); 704 pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", 705 le16_to_cpu(cmd.flags)); 706 pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", 707 le16_to_cpu(cmd.keep_alive_seconds)); 708 709 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) 710 return pos; 711 712 pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", 713 (cmd.flags & 714 cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); 715 pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", 716 cmd.skip_dtim_periods); 717 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) { 718 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", 719 le32_to_cpu(cmd.rx_data_timeout)); 720 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", 721 le32_to_cpu(cmd.tx_data_timeout)); 722 } 723 if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) 724 pos += scnprintf(buf+pos, bufsz-pos, 725 "lprx_rssi_threshold = %d\n", 726 cmd.lprx_rssi_threshold); 727 728 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) 729 return pos; 730 731 pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n", 732 le32_to_cpu(cmd.rx_data_timeout_uapsd)); 733 pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n", 734 le32_to_cpu(cmd.tx_data_timeout_uapsd)); 735 pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid); 736 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n", 737 cmd.uapsd_ac_flags); 738 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n", 739 cmd.uapsd_max_sp); 740 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n", 741 cmd.heavy_tx_thld_packets); 742 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n", 743 cmd.heavy_rx_thld_packets); 744 pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n", 745 cmd.heavy_tx_thld_percentage); 746 pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n", 747 cmd.heavy_rx_thld_percentage); 748 pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n", 749 (cmd.flags & 750 cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ? 751 1 : 0); 752 753 if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK))) 754 return pos; 755 756 pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n", 757 cmd.snooze_interval); 758 pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n", 759 cmd.snooze_window); 760 761 return pos; 762 } 763 764 void 765 iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif, 766 struct iwl_beacon_filter_cmd *cmd) 767 { 768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 769 struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; 770 771 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA) 772 cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta); 773 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA) 774 cmd->bf_roaming_energy_delta = 775 cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta); 776 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE) 777 cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state); 778 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD) 779 cmd->bf_temp_threshold = 780 cpu_to_le32(dbgfs_bf->bf_temp_threshold); 781 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER) 782 cmd->bf_temp_fast_filter = 783 cpu_to_le32(dbgfs_bf->bf_temp_fast_filter); 784 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER) 785 cmd->bf_temp_slow_filter = 786 cpu_to_le32(dbgfs_bf->bf_temp_slow_filter); 787 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG) 788 cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag); 789 if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER) 790 cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer); 791 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER) 792 cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer); 793 if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT) 794 cmd->ba_enable_beacon_abort = 795 cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort); 796 } 797 #endif 798 799 static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 800 struct ieee80211_vif *vif, 801 struct iwl_beacon_filter_cmd *cmd, 802 u32 cmd_flags) 803 { 804 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 805 int ret; 806 807 if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period || 808 vif->type != NL80211_IFTYPE_STATION || vif->p2p) 809 return 0; 810 811 iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd); 812 iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd); 813 ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags); 814 815 if (!ret) 816 mvmvif->bf_data.bf_enabled = true; 817 818 return ret; 819 } 820 821 int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm, 822 struct ieee80211_vif *vif, 823 u32 flags) 824 { 825 struct iwl_beacon_filter_cmd cmd = { 826 IWL_BF_CMD_CONFIG_DEFAULTS, 827 .bf_enable_beacon_filter = cpu_to_le32(1), 828 }; 829 830 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags); 831 } 832 833 static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 834 struct ieee80211_vif *vif, 835 u32 flags) 836 { 837 struct iwl_beacon_filter_cmd cmd = {}; 838 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 839 int ret; 840 841 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 842 return 0; 843 844 ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags); 845 846 if (!ret) 847 mvmvif->bf_data.bf_enabled = false; 848 849 return ret; 850 } 851 852 int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm, 853 struct ieee80211_vif *vif, 854 u32 flags) 855 { 856 return _iwl_mvm_disable_beacon_filter(mvm, vif, flags); 857 } 858 859 static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm) 860 { 861 bool disable_ps; 862 int ret; 863 864 /* disable PS if CAM */ 865 disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM); 866 /* ...or if any of the vifs require PS to be off */ 867 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 868 IEEE80211_IFACE_ITER_NORMAL, 869 iwl_mvm_power_ps_disabled_iterator, 870 &disable_ps); 871 872 /* update device power state if it has changed */ 873 if (mvm->ps_disabled != disable_ps) { 874 bool old_ps_disabled = mvm->ps_disabled; 875 876 mvm->ps_disabled = disable_ps; 877 ret = iwl_mvm_power_update_device(mvm); 878 if (ret) { 879 mvm->ps_disabled = old_ps_disabled; 880 return ret; 881 } 882 } 883 884 return 0; 885 } 886 887 static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm, 888 struct ieee80211_vif *vif) 889 { 890 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 891 struct iwl_beacon_filter_cmd cmd = { 892 IWL_BF_CMD_CONFIG_DEFAULTS, 893 .bf_enable_beacon_filter = cpu_to_le32(1), 894 }; 895 896 if (!mvmvif->bf_data.bf_enabled) 897 return 0; 898 899 if (test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status)) 900 cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3); 901 902 mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled || 903 mvm->ps_disabled || 904 !vif->cfg.ps || 905 iwl_mvm_vif_low_latency(mvmvif)); 906 907 return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0); 908 } 909 910 int iwl_mvm_power_update_ps(struct iwl_mvm *mvm) 911 { 912 struct iwl_power_vifs vifs = { 913 .mvm = mvm, 914 }; 915 int ret; 916 917 lockdep_assert_held(&mvm->mutex); 918 919 /* get vifs info */ 920 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 921 IEEE80211_IFACE_ITER_NORMAL, 922 iwl_mvm_power_get_vifs_iterator, &vifs); 923 924 ret = iwl_mvm_power_set_ps(mvm); 925 if (ret) 926 return ret; 927 928 if (vifs.bss_vif) 929 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 930 931 return 0; 932 } 933 934 int iwl_mvm_power_update_mac(struct iwl_mvm *mvm) 935 { 936 struct iwl_power_vifs vifs = { 937 .mvm = mvm, 938 }; 939 int ret; 940 941 lockdep_assert_held(&mvm->mutex); 942 943 /* get vifs info */ 944 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 945 IEEE80211_IFACE_ITER_NORMAL, 946 iwl_mvm_power_get_vifs_iterator, &vifs); 947 948 iwl_mvm_power_set_pm(mvm, &vifs); 949 950 ret = iwl_mvm_power_set_ps(mvm); 951 if (ret) 952 return ret; 953 954 if (vifs.bss_vif) { 955 ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif); 956 if (ret) 957 return ret; 958 } 959 960 if (vifs.p2p_vif) { 961 ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif); 962 if (ret) 963 return ret; 964 } 965 966 if (vifs.bss_vif) 967 return iwl_mvm_power_set_ba(mvm, vifs.bss_vif); 968 969 return 0; 970 } 971