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#if defined(__FreeBSD__) 8#include <linux/math64.h> 9#endif 10#include <net/mac80211.h> 11 12#include "iwl-debug.h" 13#include "iwl-io.h" 14#include "iwl-prph.h" 15#include "iwl-csr.h" 16#include "mvm.h" 17#include "fw/api/rs.h" 18#include "fw/img.h" 19 20/* 21 * Will return 0 even if the cmd failed when RFKILL is asserted unless 22 * CMD_WANT_SKB is set in cmd->flags. 23 */ 24int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 25{ 26 int ret; 27 28#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 29 if (WARN_ON(mvm->d3_test_active)) 30 return -EIO; 31#endif 32 33 /* 34 * Synchronous commands from this op-mode must hold 35 * the mutex, this ensures we don't try to send two 36 * (or more) synchronous commands at a time. 37 */ 38 if (!(cmd->flags & CMD_ASYNC)) 39 lockdep_assert_held(&mvm->mutex); 40 41 ret = iwl_trans_send_cmd(mvm->trans, cmd); 42 43 /* 44 * If the caller wants the SKB, then don't hide any problems, the 45 * caller might access the response buffer which will be NULL if 46 * the command failed. 47 */ 48 if (cmd->flags & CMD_WANT_SKB) 49 return ret; 50 51 /* 52 * Silently ignore failures if RFKILL is asserted or 53 * we are in suspend\resume process 54 */ 55 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) 56 return 0; 57 return ret; 58} 59 60int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 61 u32 flags, u16 len, const void *data) 62{ 63 struct iwl_host_cmd cmd = { 64 .id = id, 65 .len = { len, }, 66 .data = { data, }, 67 .flags = flags, 68 }; 69 70 return iwl_mvm_send_cmd(mvm, &cmd); 71} 72 73/* 74 * We assume that the caller set the status to the success value 75 */ 76int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 77 u32 *status) 78{ 79 struct iwl_rx_packet *pkt; 80 struct iwl_cmd_response *resp; 81 int ret, resp_len; 82 83 lockdep_assert_held(&mvm->mutex); 84 85#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 86 if (WARN_ON(mvm->d3_test_active)) 87 return -EIO; 88#endif 89 90 /* 91 * Only synchronous commands can wait for status, 92 * we use WANT_SKB so the caller can't. 93 */ 94 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 95 "cmd flags %x", cmd->flags)) 96 return -EINVAL; 97 98 cmd->flags |= CMD_WANT_SKB; 99 100 ret = iwl_trans_send_cmd(mvm->trans, cmd); 101 if (ret == -ERFKILL) { 102 /* 103 * The command failed because of RFKILL, don't update 104 * the status, leave it as success and return 0. 105 */ 106 return 0; 107 } else if (ret) { 108 return ret; 109 } 110 111 pkt = cmd->resp_pkt; 112 113 resp_len = iwl_rx_packet_payload_len(pkt); 114 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 115 ret = -EIO; 116 goto out_free_resp; 117 } 118 119 resp = (void *)pkt->data; 120 *status = le32_to_cpu(resp->status); 121 out_free_resp: 122 iwl_free_resp(cmd); 123 return ret; 124} 125 126/* 127 * We assume that the caller set the status to the sucess value 128 */ 129int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 130 const void *data, u32 *status) 131{ 132 struct iwl_host_cmd cmd = { 133 .id = id, 134 .len = { len, }, 135 .data = { data, }, 136 }; 137 138 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 139} 140 141int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags, 142 enum nl80211_band band) 143{ 144 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 145 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 146 bool is_LB = band == NL80211_BAND_2GHZ; 147 148 if (format == RATE_MCS_LEGACY_OFDM_MSK) 149 return is_LB ? rate + IWL_FIRST_OFDM_RATE : 150 rate; 151 152 /* CCK is not allowed in HB */ 153 return is_LB ? rate : -1; 154} 155 156int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 157 enum nl80211_band band) 158{ 159 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1; 160 int idx; 161 int band_offset = 0; 162 163 /* Legacy rate format, search for match in table */ 164 if (band != NL80211_BAND_2GHZ) 165 band_offset = IWL_FIRST_OFDM_RATE; 166 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 167 if (iwl_fw_rate_idx_to_plcp(idx) == rate) 168 return idx - band_offset; 169 170 return -1; 171} 172 173u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx) 174{ 175 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8) 176 /* In the new rate legacy rates are indexed: 177 * 0 - 3 for CCK and 0 - 7 for OFDM. 178 */ 179 return (rate_idx >= IWL_FIRST_OFDM_RATE ? 180 rate_idx - IWL_FIRST_OFDM_RATE : 181 rate_idx); 182 183 return iwl_fw_rate_idx_to_plcp(rate_idx); 184} 185 186u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 187{ 188 static const u8 mac80211_ac_to_ucode_ac[] = { 189 AC_VO, 190 AC_VI, 191 AC_BE, 192 AC_BK 193 }; 194 195 return mac80211_ac_to_ucode_ac[ac]; 196} 197 198void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 199{ 200 struct iwl_rx_packet *pkt = rxb_addr(rxb); 201 struct iwl_error_resp *err_resp = (void *)pkt->data; 202 203 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 204 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 205 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 206 le16_to_cpu(err_resp->bad_cmd_seq_num), 207 le32_to_cpu(err_resp->error_service)); 208 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 209 le64_to_cpu(err_resp->timestamp)); 210} 211 212/* 213 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 214 * The parameter should also be a combination of ANT_[ABC]. 215 */ 216u8 first_antenna(u8 mask) 217{ 218 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 219 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 220 return BIT(0); 221 return BIT(ffs(mask) - 1); 222} 223 224#define MAX_ANT_NUM 2 225/* 226 * Toggles between TX antennas to send the probe request on. 227 * Receives the bitmask of valid TX antennas and the *index* used 228 * for the last TX, and returns the next valid *index* to use. 229 * In order to set it in the tx_cmd, must do BIT(idx). 230 */ 231u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 232{ 233 u8 ind = last_idx; 234 int i; 235 236 for (i = 0; i < MAX_ANT_NUM; i++) { 237 ind = (ind + 1) % MAX_ANT_NUM; 238 if (valid & BIT(ind)) 239 return ind; 240 } 241 242 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 243 return last_idx; 244} 245 246/** 247 * iwl_mvm_send_lq_cmd() - Send link quality command 248 * @mvm: Driver data. 249 * @lq: Link quality command to send. 250 * 251 * The link quality command is sent as the last step of station creation. 252 * This is the special case in which init is set and we call a callback in 253 * this case to clear the state indicating that station creation is in 254 * progress. 255 */ 256int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 257{ 258 struct iwl_host_cmd cmd = { 259 .id = LQ_CMD, 260 .len = { sizeof(struct iwl_lq_cmd), }, 261 .flags = CMD_ASYNC, 262 .data = { lq, }, 263 }; 264 265 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 266 iwl_mvm_has_tlc_offload(mvm))) 267 return -EINVAL; 268 269 return iwl_mvm_send_cmd(mvm, &cmd); 270} 271 272/** 273 * iwl_mvm_update_smps - Get a request to change the SMPS mode 274 * @mvm: Driver data. 275 * @vif: Pointer to the ieee80211_vif structure 276 * @req_type: The part of the driver who call for a change. 277 * @smps_request: The request to change the SMPS mode. 278 * @link_id: for MLO link_id, otherwise 0 (deflink) 279 * 280 * Get a requst to change the SMPS mode, 281 * and change it according to all other requests in the driver. 282 */ 283void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 284 enum iwl_mvm_smps_type_request req_type, 285 enum ieee80211_smps_mode smps_request, 286 unsigned int link_id) 287{ 288 struct iwl_mvm_vif *mvmvif; 289 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 290 int i; 291 292 lockdep_assert_held(&mvm->mutex); 293 294 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 295 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 296 return; 297 298 if (vif->type != NL80211_IFTYPE_STATION) 299 return; 300 301 mvmvif = iwl_mvm_vif_from_mac80211(vif); 302 303 if (WARN_ON_ONCE(!mvmvif->link[link_id])) 304 return; 305 306 mvmvif->link[link_id]->smps_requests[req_type] = smps_request; 307 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 308 if (mvmvif->link[link_id]->smps_requests[i] == 309 IEEE80211_SMPS_STATIC) { 310 smps_mode = IEEE80211_SMPS_STATIC; 311 break; 312 } 313 if (mvmvif->link[link_id]->smps_requests[i] == 314 IEEE80211_SMPS_DYNAMIC) 315 smps_mode = IEEE80211_SMPS_DYNAMIC; 316 } 317 318 /* SMPS is disabled in eSR */ 319 if (mvmvif->esr_active) 320 smps_mode = IEEE80211_SMPS_OFF; 321 322 ieee80211_request_smps(vif, link_id, smps_mode); 323} 324 325void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm, 326 struct ieee80211_vif *vif, 327 enum iwl_mvm_smps_type_request req_type, 328 enum ieee80211_smps_mode smps_request) 329{ 330 struct ieee80211_bss_conf *link_conf; 331 unsigned int link_id; 332 333 rcu_read_lock(); 334 for_each_vif_active_link(vif, link_conf, link_id) 335 iwl_mvm_update_smps(mvm, vif, req_type, smps_request, 336 link_id); 337 rcu_read_unlock(); 338} 339 340static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait, 341 struct iwl_rx_packet *pkt, void *data) 342{ 343 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION); 344 345 return true; 346} 347 348int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 349{ 350 struct iwl_statistics_cmd scmd = { 351 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 352 }; 353 354 struct iwl_host_cmd cmd = { 355 .id = STATISTICS_CMD, 356 .len[0] = sizeof(scmd), 357 .data[0] = &scmd, 358 }; 359 int ret; 360 361 /* From version 15 - STATISTICS_NOTIFICATION, the reply for 362 * STATISTICS_CMD is empty, and the response is with 363 * STATISTICS_NOTIFICATION notification 364 */ 365 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 366 STATISTICS_NOTIFICATION, 0) < 15) { 367 cmd.flags = CMD_WANT_SKB; 368 369 ret = iwl_mvm_send_cmd(mvm, &cmd); 370 if (ret) 371 return ret; 372 373 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 374 iwl_free_resp(&cmd); 375 } else { 376 struct iwl_notification_wait stats_wait; 377 static const u16 stats_complete[] = { 378 STATISTICS_NOTIFICATION, 379 }; 380 381 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 382 stats_complete, ARRAY_SIZE(stats_complete), 383 iwl_wait_stats_complete, NULL); 384 385 ret = iwl_mvm_send_cmd(mvm, &cmd); 386 if (ret) { 387 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 388 return ret; 389 } 390 391 /* 200ms should be enough for FW to collect data from all 392 * LMACs and send STATISTICS_NOTIFICATION to host 393 */ 394 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5); 395 if (ret) 396 return ret; 397 } 398 399 if (clear) 400 iwl_mvm_accu_radio_stats(mvm); 401 402 return 0; 403} 404 405void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 406{ 407 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 408 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 409 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 410 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 411} 412 413struct iwl_mvm_diversity_iter_data { 414 struct iwl_mvm_phy_ctxt *ctxt; 415 bool result; 416}; 417 418static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 419 struct ieee80211_vif *vif) 420{ 421 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 422 struct iwl_mvm_diversity_iter_data *data = _data; 423 int i, link_id; 424 425 for_each_mvm_vif_valid_link(mvmvif, link_id) { 426 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 427 428 if (link_info->phy_ctxt != data->ctxt) 429 continue; 430 431 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 432 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC || 433 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) { 434 data->result = false; 435 break; 436 } 437 } 438 } 439} 440 441bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm, 442 struct iwl_mvm_phy_ctxt *ctxt) 443{ 444 struct iwl_mvm_diversity_iter_data data = { 445 .ctxt = ctxt, 446 .result = true, 447 }; 448 449 lockdep_assert_held(&mvm->mutex); 450 451 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 452 return false; 453 454 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 455 return false; 456 457 if (mvm->cfg->rx_with_siso_diversity) 458 return false; 459 460 ieee80211_iterate_active_interfaces_atomic( 461 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 462 iwl_mvm_diversity_iter, &data); 463 464 return data.result; 465} 466 467void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 468 bool low_latency, u16 mac_id) 469{ 470 struct iwl_mac_low_latency_cmd cmd = { 471 .mac_id = cpu_to_le32(mac_id) 472 }; 473 474 if (!fw_has_capa(&mvm->fw->ucode_capa, 475 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 476 return; 477 478 if (low_latency) { 479 /* currently we don't care about the direction */ 480 cmd.low_latency_rx = 1; 481 cmd.low_latency_tx = 1; 482 } 483 484 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD), 485 0, sizeof(cmd), &cmd)) 486 IWL_ERR(mvm, "Failed to send low latency command\n"); 487} 488 489int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 490 bool low_latency, 491 enum iwl_mvm_low_latency_cause cause) 492{ 493 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 494 int res; 495 bool prev; 496 497 lockdep_assert_held(&mvm->mutex); 498 499 prev = iwl_mvm_vif_low_latency(mvmvif); 500 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 501 502 low_latency = iwl_mvm_vif_low_latency(mvmvif); 503 504 if (low_latency == prev) 505 return 0; 506 507 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 508 509 res = iwl_mvm_update_quotas(mvm, false, NULL); 510 if (res) 511 return res; 512 513 iwl_mvm_bt_coex_vif_change(mvm); 514 515 return iwl_mvm_power_update_mac(mvm); 516} 517 518struct iwl_mvm_low_latency_iter { 519 bool result; 520 bool result_per_band[NUM_NL80211_BANDS]; 521}; 522 523static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 524{ 525 struct iwl_mvm_low_latency_iter *result = _data; 526 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 527 enum nl80211_band band; 528 529 if (iwl_mvm_vif_low_latency(mvmvif)) { 530 result->result = true; 531 532 if (!mvmvif->deflink.phy_ctxt) 533 return; 534 535 band = mvmvif->deflink.phy_ctxt->channel->band; 536 result->result_per_band[band] = true; 537 } 538} 539 540bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 541{ 542 struct iwl_mvm_low_latency_iter data = {}; 543 544 ieee80211_iterate_active_interfaces_atomic( 545 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 546 iwl_mvm_ll_iter, &data); 547 548 return data.result; 549} 550 551bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 552{ 553 struct iwl_mvm_low_latency_iter data = {}; 554 555 ieee80211_iterate_active_interfaces_atomic( 556 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 557 iwl_mvm_ll_iter, &data); 558 559 return data.result_per_band[band]; 560} 561 562struct iwl_bss_iter_data { 563 struct ieee80211_vif *vif; 564 bool error; 565}; 566 567static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 568 struct ieee80211_vif *vif) 569{ 570 struct iwl_bss_iter_data *data = _data; 571 572 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 573 return; 574 575 if (data->vif) { 576 data->error = true; 577 return; 578 } 579 580 data->vif = vif; 581} 582 583struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 584{ 585 struct iwl_bss_iter_data bss_iter_data = {}; 586 587 ieee80211_iterate_active_interfaces_atomic( 588 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 589 iwl_mvm_bss_iface_iterator, &bss_iter_data); 590 591 if (bss_iter_data.error) { 592 IWL_ERR(mvm, "More than one managed interface active!\n"); 593 return ERR_PTR(-EINVAL); 594 } 595 596 return bss_iter_data.vif; 597} 598 599struct iwl_bss_find_iter_data { 600 struct ieee80211_vif *vif; 601 u32 macid; 602}; 603 604static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 605 struct ieee80211_vif *vif) 606{ 607 struct iwl_bss_find_iter_data *data = _data; 608 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 609 610 if (mvmvif->id == data->macid) 611 data->vif = vif; 612} 613 614struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 615{ 616 struct iwl_bss_find_iter_data data = { 617 .macid = macid, 618 }; 619 620 lockdep_assert_held(&mvm->mutex); 621 622 ieee80211_iterate_active_interfaces_atomic( 623 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 624 iwl_mvm_bss_find_iface_iterator, &data); 625 626 return data.vif; 627} 628 629struct iwl_sta_iter_data { 630 bool assoc; 631}; 632 633static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 634 struct ieee80211_vif *vif) 635{ 636 struct iwl_sta_iter_data *data = _data; 637 638 if (vif->type != NL80211_IFTYPE_STATION) 639 return; 640 641 if (vif->cfg.assoc) 642 data->assoc = true; 643} 644 645bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 646{ 647 struct iwl_sta_iter_data data = { 648 .assoc = false, 649 }; 650 651 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 652 IEEE80211_IFACE_ITER_NORMAL, 653 iwl_mvm_sta_iface_iterator, 654 &data); 655 return data.assoc; 656} 657 658unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 659 struct ieee80211_vif *vif, 660 bool tdls, bool cmd_q) 661{ 662 struct iwl_fw_dbg_trigger_tlv *trigger; 663 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 664 unsigned int default_timeout = cmd_q ? 665 IWL_DEF_WD_TIMEOUT : 666 mvm->trans->trans_cfg->base_params->wd_timeout; 667 668 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 669 /* 670 * We can't know when the station is asleep or awake, so we 671 * must disable the queue hang detection. 672 */ 673 if (fw_has_capa(&mvm->fw->ucode_capa, 674 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 675 vif && vif->type == NL80211_IFTYPE_AP) 676 return IWL_WATCHDOG_DISABLED; 677 return default_timeout; 678 } 679 680 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 681 txq_timer = (void *)trigger->data; 682 683 if (tdls) 684 return le32_to_cpu(txq_timer->tdls); 685 686 if (cmd_q) 687 return le32_to_cpu(txq_timer->command_queue); 688 689 if (WARN_ON(!vif)) 690 return default_timeout; 691 692 switch (ieee80211_vif_type_p2p(vif)) { 693 case NL80211_IFTYPE_ADHOC: 694 return le32_to_cpu(txq_timer->ibss); 695 case NL80211_IFTYPE_STATION: 696 return le32_to_cpu(txq_timer->bss); 697 case NL80211_IFTYPE_AP: 698 return le32_to_cpu(txq_timer->softap); 699 case NL80211_IFTYPE_P2P_CLIENT: 700 return le32_to_cpu(txq_timer->p2p_client); 701 case NL80211_IFTYPE_P2P_GO: 702 return le32_to_cpu(txq_timer->p2p_go); 703 case NL80211_IFTYPE_P2P_DEVICE: 704 return le32_to_cpu(txq_timer->p2p_device); 705 case NL80211_IFTYPE_MONITOR: 706 return default_timeout; 707 default: 708 WARN_ON(1); 709 return mvm->trans->trans_cfg->base_params->wd_timeout; 710 } 711} 712 713void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 714 const char *errmsg) 715{ 716 struct iwl_fw_dbg_trigger_tlv *trig; 717 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 718 719 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 720 FW_DBG_TRIGGER_MLME); 721 if (!trig) 722 goto out; 723 724 trig_mlme = (void *)trig->data; 725 726 if (trig_mlme->stop_connection_loss && 727 --trig_mlme->stop_connection_loss) 728 goto out; 729 730 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 731 732out: 733 ieee80211_connection_loss(vif); 734} 735 736void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 737 struct ieee80211_vif *vif, 738 const struct ieee80211_sta *sta, 739 u16 tid) 740{ 741 struct iwl_fw_dbg_trigger_tlv *trig; 742 struct iwl_fw_dbg_trigger_ba *ba_trig; 743 744 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 745 FW_DBG_TRIGGER_BA); 746 if (!trig) 747 return; 748 749 ba_trig = (void *)trig->data; 750 751 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 752 return; 753 754 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 755 "Frame from %pM timed out, tid %d", 756 sta->addr, tid); 757} 758 759u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 760{ 761 if (!elapsed) 762 return 0; 763 764 return (100 * airtime / elapsed) / USEC_PER_MSEC; 765} 766 767static enum iwl_mvm_traffic_load 768iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 769{ 770 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 771 772 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 773 return IWL_MVM_TRAFFIC_HIGH; 774 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 775 return IWL_MVM_TRAFFIC_MEDIUM; 776 777 return IWL_MVM_TRAFFIC_LOW; 778} 779 780static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 781{ 782 struct iwl_mvm *mvm = _data; 783 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 784 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 785 786 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 787 return; 788 789 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 790 791 if (!mvm->tcm.result.change[mvmvif->id] && 792 prev == low_latency) { 793 iwl_mvm_update_quotas(mvm, false, NULL); 794 return; 795 } 796 797 if (prev != low_latency) { 798 /* this sends traffic load and updates quota as well */ 799 iwl_mvm_update_low_latency(mvm, vif, low_latency, 800 LOW_LATENCY_TRAFFIC); 801 } else { 802 iwl_mvm_update_quotas(mvm, false, NULL); 803 } 804} 805 806static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 807{ 808 mutex_lock(&mvm->mutex); 809 810 ieee80211_iterate_active_interfaces( 811 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 812 iwl_mvm_tcm_iter, mvm); 813 814 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 815 iwl_mvm_config_scan(mvm); 816 817 mutex_unlock(&mvm->mutex); 818} 819 820static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 821{ 822 struct iwl_mvm *mvm; 823 struct iwl_mvm_vif *mvmvif; 824 struct ieee80211_vif *vif; 825 826 mvmvif = container_of(wk, struct iwl_mvm_vif, 827 uapsd_nonagg_detected_wk.work); 828 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 829 mvm = mvmvif->mvm; 830 831 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 832 return; 833 834 /* remember that this AP is broken */ 835 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 836 vif->bss_conf.bssid, ETH_ALEN); 837 mvm->uapsd_noagg_bssid_write_idx++; 838 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 839 mvm->uapsd_noagg_bssid_write_idx = 0; 840 841 iwl_mvm_connection_loss(mvm, vif, 842 "AP isn't using AMPDU with uAPSD enabled"); 843} 844 845static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 846 struct ieee80211_vif *vif) 847{ 848 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 849 850 if (vif->type != NL80211_IFTYPE_STATION) 851 return; 852 853 if (!vif->cfg.assoc) 854 return; 855 856 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 857 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 858 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 859 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) 860 return; 861 862 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 863 return; 864 865 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 866 IWL_INFO(mvm, 867 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 868 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 869 15 * HZ); 870} 871 872static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 873 unsigned int elapsed, 874 int mac) 875{ 876 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 877 u64 tpt; 878 unsigned long rate; 879 struct ieee80211_vif *vif; 880 881 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 882 883 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 884 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 885 return; 886 887 if (iwl_mvm_has_new_rx_api(mvm)) { 888 tpt = 8 * bytes; /* kbps */ 889 do_div(tpt, elapsed); 890 rate *= 1000; /* kbps */ 891 if (tpt < 22 * rate / 100) 892 return; 893 } else { 894 /* 895 * the rate here is actually the threshold, in 100Kbps units, 896 * so do the needed conversion from bytes to 100Kbps: 897 * 100kb = bits / (100 * 1000), 898 * 100kbps = 100kb / (msecs / 1000) == 899 * (bits / (100 * 1000)) / (msecs / 1000) == 900 * bits / (100 * msecs) 901 */ 902 tpt = (8 * bytes); 903 do_div(tpt, elapsed * 100); 904 if (tpt < rate) 905 return; 906 } 907 908 rcu_read_lock(); 909 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 910 if (vif) 911 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 912 rcu_read_unlock(); 913} 914 915static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 916 struct ieee80211_vif *vif) 917{ 918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 919 u32 *band = _data; 920 921 if (!mvmvif->deflink.phy_ctxt) 922 return; 923 924 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band; 925} 926 927static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 928 unsigned long ts, 929 bool handle_uapsd) 930{ 931 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 932 unsigned int uapsd_elapsed = 933 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 934 u32 total_airtime = 0; 935 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 936 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 937 int ac, mac, i; 938 bool low_latency = false; 939 enum iwl_mvm_traffic_load load, band_load; 940 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 941 942 if (handle_ll) 943 mvm->tcm.ll_ts = ts; 944 if (handle_uapsd) 945 mvm->tcm.uapsd_nonagg_ts = ts; 946 947 mvm->tcm.result.elapsed = elapsed; 948 949 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 950 IEEE80211_IFACE_ITER_NORMAL, 951 iwl_mvm_tcm_iterator, 952 &band); 953 954 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 955 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 956 u32 vo_vi_pkts = 0; 957 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 958 959 total_airtime += airtime; 960 band_airtime[band[mac]] += airtime; 961 962 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 963 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 964 mvm->tcm.result.load[mac] = load; 965 mvm->tcm.result.airtime[mac] = airtime; 966 967 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 968 vo_vi_pkts += mdata->rx.pkts[ac] + 969 mdata->tx.pkts[ac]; 970 971 /* enable immediately with enough packets but defer disabling */ 972 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 973 mvm->tcm.result.low_latency[mac] = true; 974 else if (handle_ll) 975 mvm->tcm.result.low_latency[mac] = false; 976 977 if (handle_ll) { 978 /* clear old data */ 979 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 980 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 981 } 982 low_latency |= mvm->tcm.result.low_latency[mac]; 983 984 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 985 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 986 mac); 987 /* clear old data */ 988 if (handle_uapsd) 989 mdata->uapsd_nonagg_detect.rx_bytes = 0; 990 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 991 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 992 } 993 994 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 995 mvm->tcm.result.global_load = load; 996 997 for (i = 0; i < NUM_NL80211_BANDS; i++) { 998 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 999 mvm->tcm.result.band_load[i] = band_load; 1000 } 1001 1002 /* 1003 * If the current load isn't low we need to force re-evaluation 1004 * in the TCM period, so that we can return to low load if there 1005 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1006 * triggered by traffic). 1007 */ 1008 if (load != IWL_MVM_TRAFFIC_LOW) 1009 return MVM_TCM_PERIOD; 1010 /* 1011 * If low-latency is active we need to force re-evaluation after 1012 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1013 * when there's no traffic at all. 1014 */ 1015 if (low_latency) 1016 return MVM_LL_PERIOD; 1017 /* 1018 * Otherwise, we don't need to run the work struct because we're 1019 * in the default "idle" state - traffic indication is low (which 1020 * also covers the "no traffic" case) and low-latency is disabled 1021 * so there's no state that may need to be disabled when there's 1022 * no traffic at all. 1023 * 1024 * Note that this has no impact on the regular scheduling of the 1025 * updates triggered by traffic - those happen whenever one of the 1026 * two timeouts expire (if there's traffic at all.) 1027 */ 1028 return 0; 1029} 1030 1031void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1032{ 1033 unsigned long ts = jiffies; 1034 bool handle_uapsd = 1035 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1036 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1037 1038 spin_lock(&mvm->tcm.lock); 1039 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1040 spin_unlock(&mvm->tcm.lock); 1041 return; 1042 } 1043 spin_unlock(&mvm->tcm.lock); 1044 1045 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1046 mutex_lock(&mvm->mutex); 1047 if (iwl_mvm_request_statistics(mvm, true)) 1048 handle_uapsd = false; 1049 mutex_unlock(&mvm->mutex); 1050 } 1051 1052 spin_lock(&mvm->tcm.lock); 1053 /* re-check if somebody else won the recheck race */ 1054 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1055 /* calculate statistics */ 1056 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1057 handle_uapsd); 1058 1059 /* the memset needs to be visible before the timestamp */ 1060 smp_mb(); 1061 mvm->tcm.ts = ts; 1062 if (work_delay) 1063 schedule_delayed_work(&mvm->tcm.work, work_delay); 1064 } 1065 spin_unlock(&mvm->tcm.lock); 1066 1067 iwl_mvm_tcm_results(mvm); 1068} 1069 1070void iwl_mvm_tcm_work(struct work_struct *work) 1071{ 1072 struct delayed_work *delayed_work = to_delayed_work(work); 1073 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1074 tcm.work); 1075 1076 iwl_mvm_recalc_tcm(mvm); 1077} 1078 1079void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1080{ 1081 spin_lock_bh(&mvm->tcm.lock); 1082 mvm->tcm.paused = true; 1083 spin_unlock_bh(&mvm->tcm.lock); 1084 if (with_cancel) 1085 cancel_delayed_work_sync(&mvm->tcm.work); 1086} 1087 1088void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1089{ 1090 int mac; 1091 bool low_latency = false; 1092 1093 spin_lock_bh(&mvm->tcm.lock); 1094 mvm->tcm.ts = jiffies; 1095 mvm->tcm.ll_ts = jiffies; 1096 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1097 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1098 1099 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1100 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1101 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1102 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1103 1104 if (mvm->tcm.result.low_latency[mac]) 1105 low_latency = true; 1106 } 1107 /* The TCM data needs to be reset before "paused" flag changes */ 1108 smp_mb(); 1109 mvm->tcm.paused = false; 1110 1111 /* 1112 * if the current load is not low or low latency is active, force 1113 * re-evaluation to cover the case of no traffic. 1114 */ 1115 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1116 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1117 else if (low_latency) 1118 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1119 1120 spin_unlock_bh(&mvm->tcm.lock); 1121} 1122 1123void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1124{ 1125 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1126 1127 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1128 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1129} 1130 1131void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1132{ 1133 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1134 1135 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1136} 1137 1138u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1139{ 1140 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1141 1142 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1143 mvm->trans->cfg->gp2_reg_addr) 1144 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1145 1146 return iwl_read_prph(mvm->trans, reg_addr); 1147} 1148 1149void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, 1150 u32 *gp2, u64 *boottime, ktime_t *realtime) 1151{ 1152 bool ps_disabled; 1153 1154 lockdep_assert_held(&mvm->mutex); 1155 1156 /* Disable power save when reading GP2 */ 1157 ps_disabled = mvm->ps_disabled; 1158 if (!ps_disabled) { 1159 mvm->ps_disabled = true; 1160 iwl_mvm_power_update_device(mvm); 1161 } 1162 1163 *gp2 = iwl_mvm_get_systime(mvm); 1164 1165 if (clock_type == CLOCK_BOOTTIME && boottime) 1166 *boottime = ktime_get_boottime_ns(); 1167 else if (clock_type == CLOCK_REALTIME && realtime) 1168 *realtime = ktime_get_real(); 1169 1170 if (!ps_disabled) { 1171 mvm->ps_disabled = ps_disabled; 1172 iwl_mvm_power_update_device(mvm); 1173 } 1174} 1175 1176/* Find if at least two links from different vifs use same channel 1177 * FIXME: consider having a refcount array in struct iwl_mvm_vif for 1178 * used phy_ctxt ids. 1179 */ 1180bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1, 1181 struct iwl_mvm_vif *vif2) 1182{ 1183 unsigned int i, j; 1184 1185 for_each_mvm_vif_valid_link(vif1, i) { 1186 for_each_mvm_vif_valid_link(vif2, j) { 1187 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt) 1188 return true; 1189 } 1190 } 1191 1192 return false; 1193} 1194 1195bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif) 1196{ 1197 unsigned int i; 1198 1199 /* FIXME: can it fail when phy_ctxt is assigned? */ 1200 for_each_mvm_vif_valid_link(mvmvif, i) { 1201 if (mvmvif->link[i]->phy_ctxt && 1202 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX) 1203 return true; 1204 } 1205 1206 return false; 1207} 1208