1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2/* 3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7#include <net/mac80211.h> 8 9#include "iwl-debug.h" 10#include "iwl-io.h" 11#include "iwl-prph.h" 12#include "iwl-csr.h" 13#include "mvm.h" 14#include "fw/api/rs.h" 15#include "fw/img.h" 16 17/* 18 * Will return 0 even if the cmd failed when RFKILL is asserted unless 19 * CMD_WANT_SKB is set in cmd->flags. 20 */ 21int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 22{ 23 int ret; 24 25#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 26 if (WARN_ON(mvm->d3_test_active)) 27 return -EIO; 28#endif 29 30 /* 31 * Synchronous commands from this op-mode must hold 32 * the mutex, this ensures we don't try to send two 33 * (or more) synchronous commands at a time. 34 */ 35 if (!(cmd->flags & CMD_ASYNC)) 36 lockdep_assert_held(&mvm->mutex); 37 38 ret = iwl_trans_send_cmd(mvm->trans, cmd); 39 40 /* 41 * If the caller wants the SKB, then don't hide any problems, the 42 * caller might access the response buffer which will be NULL if 43 * the command failed. 44 */ 45 if (cmd->flags & CMD_WANT_SKB) 46 return ret; 47 48 /* 49 * Silently ignore failures if RFKILL is asserted or 50 * we are in suspend\resume process 51 */ 52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) 53 return 0; 54 return ret; 55} 56 57int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 58 u32 flags, u16 len, const void *data) 59{ 60 struct iwl_host_cmd cmd = { 61 .id = id, 62 .len = { len, }, 63 .data = { data, }, 64 .flags = flags, 65 }; 66 67 return iwl_mvm_send_cmd(mvm, &cmd); 68} 69 70/* 71 * We assume that the caller set the status to the success value 72 */ 73int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 74 u32 *status) 75{ 76 struct iwl_rx_packet *pkt; 77 struct iwl_cmd_response *resp; 78 int ret, resp_len; 79 80 lockdep_assert_held(&mvm->mutex); 81 82#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 83 if (WARN_ON(mvm->d3_test_active)) 84 return -EIO; 85#endif 86 87 /* 88 * Only synchronous commands can wait for status, 89 * we use WANT_SKB so the caller can't. 90 */ 91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 92 "cmd flags %x", cmd->flags)) 93 return -EINVAL; 94 95 cmd->flags |= CMD_WANT_SKB; 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 if (ret == -ERFKILL) { 99 /* 100 * The command failed because of RFKILL, don't update 101 * the status, leave it as success and return 0. 102 */ 103 return 0; 104 } else if (ret) { 105 return ret; 106 } 107 108 pkt = cmd->resp_pkt; 109 110 resp_len = iwl_rx_packet_payload_len(pkt); 111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 112 ret = -EIO; 113 goto out_free_resp; 114 } 115 116 resp = (void *)pkt->data; 117 *status = le32_to_cpu(resp->status); 118 out_free_resp: 119 iwl_free_resp(cmd); 120 return ret; 121} 122 123/* 124 * We assume that the caller set the status to the sucess value 125 */ 126int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 127 const void *data, u32 *status) 128{ 129 struct iwl_host_cmd cmd = { 130 .id = id, 131 .len = { len, }, 132 .data = { data, }, 133 }; 134 135 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 136} 137 138int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags, 139 enum nl80211_band band) 140{ 141 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 142 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 143 bool is_LB = band == NL80211_BAND_2GHZ; 144 145 if (format == RATE_MCS_LEGACY_OFDM_MSK) 146 return is_LB ? rate + IWL_FIRST_OFDM_RATE : 147 rate; 148 149 /* CCK is not allowed in HB */ 150 return is_LB ? rate : -1; 151} 152 153int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 154 enum nl80211_band band) 155{ 156 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1; 157 int idx; 158 int band_offset = 0; 159 160 /* Legacy rate format, search for match in table */ 161 if (band != NL80211_BAND_2GHZ) 162 band_offset = IWL_FIRST_OFDM_RATE; 163 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 164 if (iwl_fw_rate_idx_to_plcp(idx) == rate) 165 return idx - band_offset; 166 167 return -1; 168} 169 170u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx) 171{ 172 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8) 173 /* In the new rate legacy rates are indexed: 174 * 0 - 3 for CCK and 0 - 7 for OFDM. 175 */ 176 return (rate_idx >= IWL_FIRST_OFDM_RATE ? 177 rate_idx - IWL_FIRST_OFDM_RATE : 178 rate_idx); 179 180 return iwl_fw_rate_idx_to_plcp(rate_idx); 181} 182 183u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 184{ 185 static const u8 mac80211_ac_to_ucode_ac[] = { 186 AC_VO, 187 AC_VI, 188 AC_BE, 189 AC_BK 190 }; 191 192 return mac80211_ac_to_ucode_ac[ac]; 193} 194 195void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 196{ 197 struct iwl_rx_packet *pkt = rxb_addr(rxb); 198 struct iwl_error_resp *err_resp = (void *)pkt->data; 199 200 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 201 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 202 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 203 le16_to_cpu(err_resp->bad_cmd_seq_num), 204 le32_to_cpu(err_resp->error_service)); 205 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 206 le64_to_cpu(err_resp->timestamp)); 207} 208 209/* 210 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 211 * The parameter should also be a combination of ANT_[ABC]. 212 */ 213u8 first_antenna(u8 mask) 214{ 215 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 216 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 217 return BIT(0); 218 return BIT(ffs(mask) - 1); 219} 220 221#define MAX_ANT_NUM 2 222/* 223 * Toggles between TX antennas to send the probe request on. 224 * Receives the bitmask of valid TX antennas and the *index* used 225 * for the last TX, and returns the next valid *index* to use. 226 * In order to set it in the tx_cmd, must do BIT(idx). 227 */ 228u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 229{ 230 u8 ind = last_idx; 231 int i; 232 233 for (i = 0; i < MAX_ANT_NUM; i++) { 234 ind = (ind + 1) % MAX_ANT_NUM; 235 if (valid & BIT(ind)) 236 return ind; 237 } 238 239 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 240 return last_idx; 241} 242 243/** 244 * iwl_mvm_send_lq_cmd() - Send link quality command 245 * @mvm: Driver data. 246 * @lq: Link quality command to send. 247 * 248 * The link quality command is sent as the last step of station creation. 249 * This is the special case in which init is set and we call a callback in 250 * this case to clear the state indicating that station creation is in 251 * progress. 252 */ 253int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 254{ 255 struct iwl_host_cmd cmd = { 256 .id = LQ_CMD, 257 .len = { sizeof(struct iwl_lq_cmd), }, 258 .flags = CMD_ASYNC, 259 .data = { lq, }, 260 }; 261 262 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 263 iwl_mvm_has_tlc_offload(mvm))) 264 return -EINVAL; 265 266 return iwl_mvm_send_cmd(mvm, &cmd); 267} 268 269/** 270 * iwl_mvm_update_smps - Get a request to change the SMPS mode 271 * @mvm: Driver data. 272 * @vif: Pointer to the ieee80211_vif structure 273 * @req_type: The part of the driver who call for a change. 274 * @smps_request: The request to change the SMPS mode. 275 * @link_id: for MLO link_id, otherwise 0 (deflink) 276 * 277 * Get a requst to change the SMPS mode, 278 * and change it according to all other requests in the driver. 279 */ 280void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 281 enum iwl_mvm_smps_type_request req_type, 282 enum ieee80211_smps_mode smps_request, 283 unsigned int link_id) 284{ 285 struct iwl_mvm_vif *mvmvif; 286 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 287 int i; 288 289 lockdep_assert_held(&mvm->mutex); 290 291 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 292 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 293 return; 294 295 if (vif->type != NL80211_IFTYPE_STATION) 296 return; 297 298 mvmvif = iwl_mvm_vif_from_mac80211(vif); 299 300 if (WARN_ON_ONCE(!mvmvif->link[link_id])) 301 return; 302 303 mvmvif->link[link_id]->smps_requests[req_type] = smps_request; 304 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 305 if (mvmvif->link[link_id]->smps_requests[i] == 306 IEEE80211_SMPS_STATIC) { 307 smps_mode = IEEE80211_SMPS_STATIC; 308 break; 309 } 310 if (mvmvif->link[link_id]->smps_requests[i] == 311 IEEE80211_SMPS_DYNAMIC) 312 smps_mode = IEEE80211_SMPS_DYNAMIC; 313 } 314 315 /* SMPS is disabled in eSR */ 316 if (mvmvif->esr_active) 317 smps_mode = IEEE80211_SMPS_OFF; 318 319 ieee80211_request_smps(vif, link_id, smps_mode); 320} 321 322void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm, 323 struct ieee80211_vif *vif, 324 enum iwl_mvm_smps_type_request req_type, 325 enum ieee80211_smps_mode smps_request) 326{ 327 struct ieee80211_bss_conf *link_conf; 328 unsigned int link_id; 329 330 rcu_read_lock(); 331 for_each_vif_active_link(vif, link_conf, link_id) 332 iwl_mvm_update_smps(mvm, vif, req_type, smps_request, 333 link_id); 334 rcu_read_unlock(); 335} 336 337static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait, 338 struct iwl_rx_packet *pkt, void *data) 339{ 340 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION); 341 342 return true; 343} 344 345int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 346{ 347 struct iwl_statistics_cmd scmd = { 348 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 349 }; 350 351 struct iwl_host_cmd cmd = { 352 .id = STATISTICS_CMD, 353 .len[0] = sizeof(scmd), 354 .data[0] = &scmd, 355 }; 356 int ret; 357 358 /* From version 15 - STATISTICS_NOTIFICATION, the reply for 359 * STATISTICS_CMD is empty, and the response is with 360 * STATISTICS_NOTIFICATION notification 361 */ 362 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 363 STATISTICS_NOTIFICATION, 0) < 15) { 364 cmd.flags = CMD_WANT_SKB; 365 366 ret = iwl_mvm_send_cmd(mvm, &cmd); 367 if (ret) 368 return ret; 369 370 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 371 iwl_free_resp(&cmd); 372 } else { 373 struct iwl_notification_wait stats_wait; 374 static const u16 stats_complete[] = { 375 STATISTICS_NOTIFICATION, 376 }; 377 378 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 379 stats_complete, ARRAY_SIZE(stats_complete), 380 iwl_wait_stats_complete, NULL); 381 382 ret = iwl_mvm_send_cmd(mvm, &cmd); 383 if (ret) { 384 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 385 return ret; 386 } 387 388 /* 200ms should be enough for FW to collect data from all 389 * LMACs and send STATISTICS_NOTIFICATION to host 390 */ 391 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5); 392 if (ret) 393 return ret; 394 } 395 396 if (clear) 397 iwl_mvm_accu_radio_stats(mvm); 398 399 return 0; 400} 401 402void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 403{ 404 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 405 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 406 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 407 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 408} 409 410struct iwl_mvm_diversity_iter_data { 411 struct iwl_mvm_phy_ctxt *ctxt; 412 bool result; 413}; 414 415static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 416 struct ieee80211_vif *vif) 417{ 418 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 419 struct iwl_mvm_diversity_iter_data *data = _data; 420 int i, link_id; 421 422 for_each_mvm_vif_valid_link(mvmvif, link_id) { 423 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 424 425 if (link_info->phy_ctxt != data->ctxt) 426 continue; 427 428 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 429 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC || 430 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) { 431 data->result = false; 432 break; 433 } 434 } 435 } 436} 437 438bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm, 439 struct iwl_mvm_phy_ctxt *ctxt) 440{ 441 struct iwl_mvm_diversity_iter_data data = { 442 .ctxt = ctxt, 443 .result = true, 444 }; 445 446 lockdep_assert_held(&mvm->mutex); 447 448 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 449 return false; 450 451 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 452 return false; 453 454 if (mvm->cfg->rx_with_siso_diversity) 455 return false; 456 457 ieee80211_iterate_active_interfaces_atomic( 458 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 459 iwl_mvm_diversity_iter, &data); 460 461 return data.result; 462} 463 464void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 465 bool low_latency, u16 mac_id) 466{ 467 struct iwl_mac_low_latency_cmd cmd = { 468 .mac_id = cpu_to_le32(mac_id) 469 }; 470 471 if (!fw_has_capa(&mvm->fw->ucode_capa, 472 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 473 return; 474 475 if (low_latency) { 476 /* currently we don't care about the direction */ 477 cmd.low_latency_rx = 1; 478 cmd.low_latency_tx = 1; 479 } 480 481 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD), 482 0, sizeof(cmd), &cmd)) 483 IWL_ERR(mvm, "Failed to send low latency command\n"); 484} 485 486int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 487 bool low_latency, 488 enum iwl_mvm_low_latency_cause cause) 489{ 490 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 491 int res; 492 bool prev; 493 494 lockdep_assert_held(&mvm->mutex); 495 496 prev = iwl_mvm_vif_low_latency(mvmvif); 497 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 498 499 low_latency = iwl_mvm_vif_low_latency(mvmvif); 500 501 if (low_latency == prev) 502 return 0; 503 504 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 505 506 res = iwl_mvm_update_quotas(mvm, false, NULL); 507 if (res) 508 return res; 509 510 iwl_mvm_bt_coex_vif_change(mvm); 511 512 return iwl_mvm_power_update_mac(mvm); 513} 514 515struct iwl_mvm_low_latency_iter { 516 bool result; 517 bool result_per_band[NUM_NL80211_BANDS]; 518}; 519 520static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 521{ 522 struct iwl_mvm_low_latency_iter *result = _data; 523 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 524 enum nl80211_band band; 525 526 if (iwl_mvm_vif_low_latency(mvmvif)) { 527 result->result = true; 528 529 if (!mvmvif->deflink.phy_ctxt) 530 return; 531 532 band = mvmvif->deflink.phy_ctxt->channel->band; 533 result->result_per_band[band] = true; 534 } 535} 536 537bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 538{ 539 struct iwl_mvm_low_latency_iter data = {}; 540 541 ieee80211_iterate_active_interfaces_atomic( 542 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 543 iwl_mvm_ll_iter, &data); 544 545 return data.result; 546} 547 548bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 549{ 550 struct iwl_mvm_low_latency_iter data = {}; 551 552 ieee80211_iterate_active_interfaces_atomic( 553 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 554 iwl_mvm_ll_iter, &data); 555 556 return data.result_per_band[band]; 557} 558 559struct iwl_bss_iter_data { 560 struct ieee80211_vif *vif; 561 bool error; 562}; 563 564static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 565 struct ieee80211_vif *vif) 566{ 567 struct iwl_bss_iter_data *data = _data; 568 569 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 570 return; 571 572 if (data->vif) { 573 data->error = true; 574 return; 575 } 576 577 data->vif = vif; 578} 579 580struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 581{ 582 struct iwl_bss_iter_data bss_iter_data = {}; 583 584 ieee80211_iterate_active_interfaces_atomic( 585 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 586 iwl_mvm_bss_iface_iterator, &bss_iter_data); 587 588 if (bss_iter_data.error) { 589 IWL_ERR(mvm, "More than one managed interface active!\n"); 590 return ERR_PTR(-EINVAL); 591 } 592 593 return bss_iter_data.vif; 594} 595 596struct iwl_bss_find_iter_data { 597 struct ieee80211_vif *vif; 598 u32 macid; 599}; 600 601static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 602 struct ieee80211_vif *vif) 603{ 604 struct iwl_bss_find_iter_data *data = _data; 605 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 606 607 if (mvmvif->id == data->macid) 608 data->vif = vif; 609} 610 611struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 612{ 613 struct iwl_bss_find_iter_data data = { 614 .macid = macid, 615 }; 616 617 lockdep_assert_held(&mvm->mutex); 618 619 ieee80211_iterate_active_interfaces_atomic( 620 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 621 iwl_mvm_bss_find_iface_iterator, &data); 622 623 return data.vif; 624} 625 626struct iwl_sta_iter_data { 627 bool assoc; 628}; 629 630static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 631 struct ieee80211_vif *vif) 632{ 633 struct iwl_sta_iter_data *data = _data; 634 635 if (vif->type != NL80211_IFTYPE_STATION) 636 return; 637 638 if (vif->cfg.assoc) 639 data->assoc = true; 640} 641 642bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 643{ 644 struct iwl_sta_iter_data data = { 645 .assoc = false, 646 }; 647 648 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 649 IEEE80211_IFACE_ITER_NORMAL, 650 iwl_mvm_sta_iface_iterator, 651 &data); 652 return data.assoc; 653} 654 655unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 656 struct ieee80211_vif *vif, 657 bool tdls, bool cmd_q) 658{ 659 struct iwl_fw_dbg_trigger_tlv *trigger; 660 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 661 unsigned int default_timeout = cmd_q ? 662 IWL_DEF_WD_TIMEOUT : 663 mvm->trans->trans_cfg->base_params->wd_timeout; 664 665 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 666 /* 667 * We can't know when the station is asleep or awake, so we 668 * must disable the queue hang detection. 669 */ 670 if (fw_has_capa(&mvm->fw->ucode_capa, 671 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 672 vif && vif->type == NL80211_IFTYPE_AP) 673 return IWL_WATCHDOG_DISABLED; 674 return default_timeout; 675 } 676 677 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 678 txq_timer = (void *)trigger->data; 679 680 if (tdls) 681 return le32_to_cpu(txq_timer->tdls); 682 683 if (cmd_q) 684 return le32_to_cpu(txq_timer->command_queue); 685 686 if (WARN_ON(!vif)) 687 return default_timeout; 688 689 switch (ieee80211_vif_type_p2p(vif)) { 690 case NL80211_IFTYPE_ADHOC: 691 return le32_to_cpu(txq_timer->ibss); 692 case NL80211_IFTYPE_STATION: 693 return le32_to_cpu(txq_timer->bss); 694 case NL80211_IFTYPE_AP: 695 return le32_to_cpu(txq_timer->softap); 696 case NL80211_IFTYPE_P2P_CLIENT: 697 return le32_to_cpu(txq_timer->p2p_client); 698 case NL80211_IFTYPE_P2P_GO: 699 return le32_to_cpu(txq_timer->p2p_go); 700 case NL80211_IFTYPE_P2P_DEVICE: 701 return le32_to_cpu(txq_timer->p2p_device); 702 case NL80211_IFTYPE_MONITOR: 703 return default_timeout; 704 default: 705 WARN_ON(1); 706 return mvm->trans->trans_cfg->base_params->wd_timeout; 707 } 708} 709 710void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 711 const char *errmsg) 712{ 713 struct iwl_fw_dbg_trigger_tlv *trig; 714 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 715 716 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 717 FW_DBG_TRIGGER_MLME); 718 if (!trig) 719 goto out; 720 721 trig_mlme = (void *)trig->data; 722 723 if (trig_mlme->stop_connection_loss && 724 --trig_mlme->stop_connection_loss) 725 goto out; 726 727 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 728 729out: 730 ieee80211_connection_loss(vif); 731} 732 733void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 734 struct ieee80211_vif *vif, 735 const struct ieee80211_sta *sta, 736 u16 tid) 737{ 738 struct iwl_fw_dbg_trigger_tlv *trig; 739 struct iwl_fw_dbg_trigger_ba *ba_trig; 740 741 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 742 FW_DBG_TRIGGER_BA); 743 if (!trig) 744 return; 745 746 ba_trig = (void *)trig->data; 747 748 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 749 return; 750 751 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 752 "Frame from %pM timed out, tid %d", 753 sta->addr, tid); 754} 755 756u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 757{ 758 if (!elapsed) 759 return 0; 760 761 return (100 * airtime / elapsed) / USEC_PER_MSEC; 762} 763 764static enum iwl_mvm_traffic_load 765iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 766{ 767 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 768 769 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 770 return IWL_MVM_TRAFFIC_HIGH; 771 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 772 return IWL_MVM_TRAFFIC_MEDIUM; 773 774 return IWL_MVM_TRAFFIC_LOW; 775} 776 777static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 778{ 779 struct iwl_mvm *mvm = _data; 780 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 781 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 782 783 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 784 return; 785 786 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 787 788 if (!mvm->tcm.result.change[mvmvif->id] && 789 prev == low_latency) { 790 iwl_mvm_update_quotas(mvm, false, NULL); 791 return; 792 } 793 794 if (prev != low_latency) { 795 /* this sends traffic load and updates quota as well */ 796 iwl_mvm_update_low_latency(mvm, vif, low_latency, 797 LOW_LATENCY_TRAFFIC); 798 } else { 799 iwl_mvm_update_quotas(mvm, false, NULL); 800 } 801} 802 803static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 804{ 805 mutex_lock(&mvm->mutex); 806 807 ieee80211_iterate_active_interfaces( 808 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 809 iwl_mvm_tcm_iter, mvm); 810 811 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 812 iwl_mvm_config_scan(mvm); 813 814 mutex_unlock(&mvm->mutex); 815} 816 817static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 818{ 819 struct iwl_mvm *mvm; 820 struct iwl_mvm_vif *mvmvif; 821 struct ieee80211_vif *vif; 822 823 mvmvif = container_of(wk, struct iwl_mvm_vif, 824 uapsd_nonagg_detected_wk.work); 825 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 826 mvm = mvmvif->mvm; 827 828 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 829 return; 830 831 /* remember that this AP is broken */ 832 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 833 vif->bss_conf.bssid, ETH_ALEN); 834 mvm->uapsd_noagg_bssid_write_idx++; 835 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 836 mvm->uapsd_noagg_bssid_write_idx = 0; 837 838 iwl_mvm_connection_loss(mvm, vif, 839 "AP isn't using AMPDU with uAPSD enabled"); 840} 841 842static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 843 struct ieee80211_vif *vif) 844{ 845 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 846 847 if (vif->type != NL80211_IFTYPE_STATION) 848 return; 849 850 if (!vif->cfg.assoc) 851 return; 852 853 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 854 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 855 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 856 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) 857 return; 858 859 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 860 return; 861 862 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 863 IWL_INFO(mvm, 864 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 865 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 866 15 * HZ); 867} 868 869static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 870 unsigned int elapsed, 871 int mac) 872{ 873 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 874 u64 tpt; 875 unsigned long rate; 876 struct ieee80211_vif *vif; 877 878 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 879 880 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 881 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 882 return; 883 884 if (iwl_mvm_has_new_rx_api(mvm)) { 885 tpt = 8 * bytes; /* kbps */ 886 do_div(tpt, elapsed); 887 rate *= 1000; /* kbps */ 888 if (tpt < 22 * rate / 100) 889 return; 890 } else { 891 /* 892 * the rate here is actually the threshold, in 100Kbps units, 893 * so do the needed conversion from bytes to 100Kbps: 894 * 100kb = bits / (100 * 1000), 895 * 100kbps = 100kb / (msecs / 1000) == 896 * (bits / (100 * 1000)) / (msecs / 1000) == 897 * bits / (100 * msecs) 898 */ 899 tpt = (8 * bytes); 900 do_div(tpt, elapsed * 100); 901 if (tpt < rate) 902 return; 903 } 904 905 rcu_read_lock(); 906 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 907 if (vif) 908 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 909 rcu_read_unlock(); 910} 911 912static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 913 struct ieee80211_vif *vif) 914{ 915 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 916 u32 *band = _data; 917 918 if (!mvmvif->deflink.phy_ctxt) 919 return; 920 921 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band; 922} 923 924static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 925 unsigned long ts, 926 bool handle_uapsd) 927{ 928 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 929 unsigned int uapsd_elapsed = 930 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 931 u32 total_airtime = 0; 932 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 933 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 934 int ac, mac, i; 935 bool low_latency = false; 936 enum iwl_mvm_traffic_load load, band_load; 937 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 938 939 if (handle_ll) 940 mvm->tcm.ll_ts = ts; 941 if (handle_uapsd) 942 mvm->tcm.uapsd_nonagg_ts = ts; 943 944 mvm->tcm.result.elapsed = elapsed; 945 946 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 947 IEEE80211_IFACE_ITER_NORMAL, 948 iwl_mvm_tcm_iterator, 949 &band); 950 951 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 952 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 953 u32 vo_vi_pkts = 0; 954 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 955 956 total_airtime += airtime; 957 band_airtime[band[mac]] += airtime; 958 959 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 960 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 961 mvm->tcm.result.load[mac] = load; 962 mvm->tcm.result.airtime[mac] = airtime; 963 964 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 965 vo_vi_pkts += mdata->rx.pkts[ac] + 966 mdata->tx.pkts[ac]; 967 968 /* enable immediately with enough packets but defer disabling */ 969 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 970 mvm->tcm.result.low_latency[mac] = true; 971 else if (handle_ll) 972 mvm->tcm.result.low_latency[mac] = false; 973 974 if (handle_ll) { 975 /* clear old data */ 976 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 977 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 978 } 979 low_latency |= mvm->tcm.result.low_latency[mac]; 980 981 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 982 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 983 mac); 984 /* clear old data */ 985 if (handle_uapsd) 986 mdata->uapsd_nonagg_detect.rx_bytes = 0; 987 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 988 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 989 } 990 991 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 992 mvm->tcm.result.global_load = load; 993 994 for (i = 0; i < NUM_NL80211_BANDS; i++) { 995 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 996 mvm->tcm.result.band_load[i] = band_load; 997 } 998 999 /* 1000 * If the current load isn't low we need to force re-evaluation 1001 * in the TCM period, so that we can return to low load if there 1002 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1003 * triggered by traffic). 1004 */ 1005 if (load != IWL_MVM_TRAFFIC_LOW) 1006 return MVM_TCM_PERIOD; 1007 /* 1008 * If low-latency is active we need to force re-evaluation after 1009 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1010 * when there's no traffic at all. 1011 */ 1012 if (low_latency) 1013 return MVM_LL_PERIOD; 1014 /* 1015 * Otherwise, we don't need to run the work struct because we're 1016 * in the default "idle" state - traffic indication is low (which 1017 * also covers the "no traffic" case) and low-latency is disabled 1018 * so there's no state that may need to be disabled when there's 1019 * no traffic at all. 1020 * 1021 * Note that this has no impact on the regular scheduling of the 1022 * updates triggered by traffic - those happen whenever one of the 1023 * two timeouts expire (if there's traffic at all.) 1024 */ 1025 return 0; 1026} 1027 1028void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1029{ 1030 unsigned long ts = jiffies; 1031 bool handle_uapsd = 1032 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1033 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1034 1035 spin_lock(&mvm->tcm.lock); 1036 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1037 spin_unlock(&mvm->tcm.lock); 1038 return; 1039 } 1040 spin_unlock(&mvm->tcm.lock); 1041 1042 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1043 mutex_lock(&mvm->mutex); 1044 if (iwl_mvm_request_statistics(mvm, true)) 1045 handle_uapsd = false; 1046 mutex_unlock(&mvm->mutex); 1047 } 1048 1049 spin_lock(&mvm->tcm.lock); 1050 /* re-check if somebody else won the recheck race */ 1051 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1052 /* calculate statistics */ 1053 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1054 handle_uapsd); 1055 1056 /* the memset needs to be visible before the timestamp */ 1057 smp_mb(); 1058 mvm->tcm.ts = ts; 1059 if (work_delay) 1060 schedule_delayed_work(&mvm->tcm.work, work_delay); 1061 } 1062 spin_unlock(&mvm->tcm.lock); 1063 1064 iwl_mvm_tcm_results(mvm); 1065} 1066 1067void iwl_mvm_tcm_work(struct work_struct *work) 1068{ 1069 struct delayed_work *delayed_work = to_delayed_work(work); 1070 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1071 tcm.work); 1072 1073 iwl_mvm_recalc_tcm(mvm); 1074} 1075 1076void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1077{ 1078 spin_lock_bh(&mvm->tcm.lock); 1079 mvm->tcm.paused = true; 1080 spin_unlock_bh(&mvm->tcm.lock); 1081 if (with_cancel) 1082 cancel_delayed_work_sync(&mvm->tcm.work); 1083} 1084 1085void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1086{ 1087 int mac; 1088 bool low_latency = false; 1089 1090 spin_lock_bh(&mvm->tcm.lock); 1091 mvm->tcm.ts = jiffies; 1092 mvm->tcm.ll_ts = jiffies; 1093 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1094 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1095 1096 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1097 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1098 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1099 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1100 1101 if (mvm->tcm.result.low_latency[mac]) 1102 low_latency = true; 1103 } 1104 /* The TCM data needs to be reset before "paused" flag changes */ 1105 smp_mb(); 1106 mvm->tcm.paused = false; 1107 1108 /* 1109 * if the current load is not low or low latency is active, force 1110 * re-evaluation to cover the case of no traffic. 1111 */ 1112 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1113 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1114 else if (low_latency) 1115 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1116 1117 spin_unlock_bh(&mvm->tcm.lock); 1118} 1119 1120void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1121{ 1122 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1123 1124 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1125 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1126} 1127 1128void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1129{ 1130 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1131 1132 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1133} 1134 1135u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1136{ 1137 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1138 1139 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1140 mvm->trans->cfg->gp2_reg_addr) 1141 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1142 1143 return iwl_read_prph(mvm->trans, reg_addr); 1144} 1145 1146void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, 1147 u32 *gp2, u64 *boottime, ktime_t *realtime) 1148{ 1149 bool ps_disabled; 1150 1151 lockdep_assert_held(&mvm->mutex); 1152 1153 /* Disable power save when reading GP2 */ 1154 ps_disabled = mvm->ps_disabled; 1155 if (!ps_disabled) { 1156 mvm->ps_disabled = true; 1157 iwl_mvm_power_update_device(mvm); 1158 } 1159 1160 *gp2 = iwl_mvm_get_systime(mvm); 1161 1162 if (clock_type == CLOCK_BOOTTIME && boottime) 1163 *boottime = ktime_get_boottime_ns(); 1164 else if (clock_type == CLOCK_REALTIME && realtime) 1165 *realtime = ktime_get_real(); 1166 1167 if (!ps_disabled) { 1168 mvm->ps_disabled = ps_disabled; 1169 iwl_mvm_power_update_device(mvm); 1170 } 1171} 1172 1173/* Find if at least two links from different vifs use same channel 1174 * FIXME: consider having a refcount array in struct iwl_mvm_vif for 1175 * used phy_ctxt ids. 1176 */ 1177bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1, 1178 struct iwl_mvm_vif *vif2) 1179{ 1180 unsigned int i, j; 1181 1182 for_each_mvm_vif_valid_link(vif1, i) { 1183 for_each_mvm_vif_valid_link(vif2, j) { 1184 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt) 1185 return true; 1186 } 1187 } 1188 1189 return false; 1190} 1191 1192bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif) 1193{ 1194 unsigned int i; 1195 1196 /* FIXME: can it fail when phy_ctxt is assigned? */ 1197 for_each_mvm_vif_valid_link(mvmvif, i) { 1198 if (mvmvif->link[i]->phy_ctxt && 1199 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX) 1200 return true; 1201 } 1202 1203 return false; 1204} 1205