1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 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 */ 21 int 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 57 int 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 */ 73 int 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 */ 126 int 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 } 137 138 int 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 } 152 153 int 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 } 169 170 u8 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 } 182 183 u8 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 } 194 195 void 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 */ 213 u8 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 */ 228 u8 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 * 253 * Returns: an error code indicating success or failure 254 */ 255 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 256 { 257 struct iwl_host_cmd cmd = { 258 .id = LQ_CMD, 259 .len = { sizeof(struct iwl_lq_cmd), }, 260 .flags = CMD_ASYNC, 261 .data = { lq, }, 262 }; 263 264 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA || 265 iwl_mvm_has_tlc_offload(mvm))) 266 return -EINVAL; 267 268 return iwl_mvm_send_cmd(mvm, &cmd); 269 } 270 271 /** 272 * iwl_mvm_update_smps - Get a request to change the SMPS mode 273 * @mvm: Driver data. 274 * @vif: Pointer to the ieee80211_vif structure 275 * @req_type: The part of the driver who call for a change. 276 * @smps_request: The request to change the SMPS mode. 277 * @link_id: for MLO link_id, otherwise 0 (deflink) 278 * 279 * Get a requst to change the SMPS mode, 280 * and change it according to all other requests in the driver. 281 */ 282 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 283 enum iwl_mvm_smps_type_request req_type, 284 enum ieee80211_smps_mode smps_request, 285 unsigned int link_id) 286 { 287 struct iwl_mvm_vif *mvmvif; 288 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 289 int i; 290 291 lockdep_assert_held(&mvm->mutex); 292 293 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 294 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 295 return; 296 297 if (vif->type != NL80211_IFTYPE_STATION) 298 return; 299 300 mvmvif = iwl_mvm_vif_from_mac80211(vif); 301 302 if (WARN_ON_ONCE(!mvmvif->link[link_id])) 303 return; 304 305 mvmvif->link[link_id]->smps_requests[req_type] = smps_request; 306 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 307 if (mvmvif->link[link_id]->smps_requests[i] == 308 IEEE80211_SMPS_STATIC) { 309 smps_mode = IEEE80211_SMPS_STATIC; 310 break; 311 } 312 if (mvmvif->link[link_id]->smps_requests[i] == 313 IEEE80211_SMPS_DYNAMIC) 314 smps_mode = IEEE80211_SMPS_DYNAMIC; 315 } 316 317 /* SMPS is disabled in eSR */ 318 if (mvmvif->esr_active) 319 smps_mode = IEEE80211_SMPS_OFF; 320 321 ieee80211_request_smps(vif, link_id, smps_mode); 322 } 323 324 void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm, 325 struct ieee80211_vif *vif, 326 enum iwl_mvm_smps_type_request req_type, 327 enum ieee80211_smps_mode smps_request) 328 { 329 struct ieee80211_bss_conf *link_conf; 330 unsigned int link_id; 331 332 rcu_read_lock(); 333 for_each_vif_active_link(vif, link_conf, link_id) 334 iwl_mvm_update_smps(mvm, vif, req_type, smps_request, 335 link_id); 336 rcu_read_unlock(); 337 } 338 339 static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait, 340 struct iwl_rx_packet *pkt, void *data) 341 { 342 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION); 343 344 return true; 345 } 346 347 #define PERIODIC_STAT_RATE 5 348 349 int iwl_mvm_request_periodic_system_statistics(struct iwl_mvm *mvm, bool enable) 350 { 351 u32 flags = enable ? 0 : IWL_STATS_CFG_FLG_DISABLE_NTFY_MSK; 352 u32 type = enable ? (IWL_STATS_NTFY_TYPE_ID_OPER | 353 IWL_STATS_NTFY_TYPE_ID_OPER_PART1) : 0; 354 struct iwl_system_statistics_cmd system_cmd = { 355 .cfg_mask = cpu_to_le32(flags), 356 .config_time_sec = cpu_to_le32(enable ? 357 PERIODIC_STAT_RATE : 0), 358 .type_id_mask = cpu_to_le32(type), 359 }; 360 361 return iwl_mvm_send_cmd_pdu(mvm, 362 WIDE_ID(SYSTEM_GROUP, 363 SYSTEM_STATISTICS_CMD), 364 0, sizeof(system_cmd), &system_cmd); 365 } 366 367 static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear, 368 u8 cmd_ver) 369 { 370 struct iwl_system_statistics_cmd system_cmd = { 371 .cfg_mask = clear ? 372 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) : 373 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK | 374 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK), 375 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER | 376 IWL_STATS_NTFY_TYPE_ID_OPER_PART1), 377 }; 378 struct iwl_host_cmd cmd = { 379 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD), 380 .len[0] = sizeof(system_cmd), 381 .data[0] = &system_cmd, 382 }; 383 struct iwl_notification_wait stats_wait; 384 static const u16 stats_complete[] = { 385 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF), 386 }; 387 int ret; 388 389 if (cmd_ver != 1) { 390 IWL_FW_CHECK_FAILED(mvm, 391 "Invalid system statistics command version:%d\n", 392 cmd_ver); 393 return -EOPNOTSUPP; 394 } 395 396 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 397 stats_complete, ARRAY_SIZE(stats_complete), 398 NULL, NULL); 399 400 mvm->statistics_clear = clear; 401 ret = iwl_mvm_send_cmd(mvm, &cmd); 402 if (ret) { 403 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 404 return ret; 405 } 406 407 /* 500ms for OPERATIONAL, PART1 and END notification should be enough 408 * for FW to collect data from all LMACs and send 409 * STATISTICS_NOTIFICATION to host 410 */ 411 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2); 412 if (ret) 413 return ret; 414 415 if (clear) 416 iwl_mvm_accu_radio_stats(mvm); 417 418 return ret; 419 } 420 421 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 422 { 423 struct iwl_statistics_cmd scmd = { 424 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 425 }; 426 427 struct iwl_host_cmd cmd = { 428 .id = STATISTICS_CMD, 429 .len[0] = sizeof(scmd), 430 .data[0] = &scmd, 431 }; 432 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 433 WIDE_ID(SYSTEM_GROUP, 434 SYSTEM_STATISTICS_CMD), 435 IWL_FW_CMD_VER_UNKNOWN); 436 int ret; 437 438 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN) 439 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver); 440 441 /* From version 15 - STATISTICS_NOTIFICATION, the reply for 442 * STATISTICS_CMD is empty, and the response is with 443 * STATISTICS_NOTIFICATION notification 444 */ 445 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 446 STATISTICS_NOTIFICATION, 0) < 15) { 447 cmd.flags = CMD_WANT_SKB; 448 449 ret = iwl_mvm_send_cmd(mvm, &cmd); 450 if (ret) 451 return ret; 452 453 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 454 iwl_free_resp(&cmd); 455 } else { 456 struct iwl_notification_wait stats_wait; 457 static const u16 stats_complete[] = { 458 STATISTICS_NOTIFICATION, 459 }; 460 461 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 462 stats_complete, ARRAY_SIZE(stats_complete), 463 iwl_wait_stats_complete, NULL); 464 465 ret = iwl_mvm_send_cmd(mvm, &cmd); 466 if (ret) { 467 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 468 return ret; 469 } 470 471 /* 200ms should be enough for FW to collect data from all 472 * LMACs and send STATISTICS_NOTIFICATION to host 473 */ 474 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5); 475 if (ret) 476 return ret; 477 } 478 479 if (clear) 480 iwl_mvm_accu_radio_stats(mvm); 481 482 return 0; 483 } 484 485 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 486 { 487 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 488 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 489 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 490 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 491 } 492 493 struct iwl_mvm_diversity_iter_data { 494 struct iwl_mvm_phy_ctxt *ctxt; 495 bool result; 496 }; 497 498 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 499 struct ieee80211_vif *vif) 500 { 501 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 502 struct iwl_mvm_diversity_iter_data *data = _data; 503 int i, link_id; 504 505 for_each_mvm_vif_valid_link(mvmvif, link_id) { 506 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 507 508 if (link_info->phy_ctxt != data->ctxt) 509 continue; 510 511 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 512 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC || 513 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) { 514 data->result = false; 515 break; 516 } 517 } 518 } 519 } 520 521 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm, 522 struct iwl_mvm_phy_ctxt *ctxt) 523 { 524 struct iwl_mvm_diversity_iter_data data = { 525 .ctxt = ctxt, 526 .result = true, 527 }; 528 529 lockdep_assert_held(&mvm->mutex); 530 531 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 532 return false; 533 534 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 535 return false; 536 537 if (mvm->cfg->rx_with_siso_diversity) 538 return false; 539 540 ieee80211_iterate_active_interfaces_atomic( 541 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 542 iwl_mvm_diversity_iter, &data); 543 544 return data.result; 545 } 546 547 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 548 bool low_latency, u16 mac_id) 549 { 550 struct iwl_mac_low_latency_cmd cmd = { 551 .mac_id = cpu_to_le32(mac_id) 552 }; 553 554 if (!fw_has_capa(&mvm->fw->ucode_capa, 555 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 556 return; 557 558 if (low_latency) { 559 /* currently we don't care about the direction */ 560 cmd.low_latency_rx = 1; 561 cmd.low_latency_tx = 1; 562 } 563 564 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD), 565 0, sizeof(cmd), &cmd)) 566 IWL_ERR(mvm, "Failed to send low latency command\n"); 567 } 568 569 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 570 bool low_latency, 571 enum iwl_mvm_low_latency_cause cause) 572 { 573 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 574 int res; 575 bool prev; 576 577 lockdep_assert_held(&mvm->mutex); 578 579 prev = iwl_mvm_vif_low_latency(mvmvif); 580 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 581 582 low_latency = iwl_mvm_vif_low_latency(mvmvif); 583 584 if (low_latency == prev) 585 return 0; 586 587 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 588 589 res = iwl_mvm_update_quotas(mvm, false, NULL); 590 if (res) 591 return res; 592 593 iwl_mvm_bt_coex_vif_change(mvm); 594 595 return iwl_mvm_power_update_mac(mvm); 596 } 597 598 struct iwl_mvm_low_latency_iter { 599 bool result; 600 bool result_per_band[NUM_NL80211_BANDS]; 601 }; 602 603 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 604 { 605 struct iwl_mvm_low_latency_iter *result = _data; 606 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 607 enum nl80211_band band; 608 609 if (iwl_mvm_vif_low_latency(mvmvif)) { 610 result->result = true; 611 612 if (!mvmvif->deflink.phy_ctxt) 613 return; 614 615 band = mvmvif->deflink.phy_ctxt->channel->band; 616 result->result_per_band[band] = true; 617 } 618 } 619 620 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 621 { 622 struct iwl_mvm_low_latency_iter data = {}; 623 624 ieee80211_iterate_active_interfaces_atomic( 625 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 626 iwl_mvm_ll_iter, &data); 627 628 return data.result; 629 } 630 631 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 632 { 633 struct iwl_mvm_low_latency_iter data = {}; 634 635 ieee80211_iterate_active_interfaces_atomic( 636 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 637 iwl_mvm_ll_iter, &data); 638 639 return data.result_per_band[band]; 640 } 641 642 struct iwl_bss_iter_data { 643 struct ieee80211_vif *vif; 644 bool error; 645 }; 646 647 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 648 struct ieee80211_vif *vif) 649 { 650 struct iwl_bss_iter_data *data = _data; 651 652 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 653 return; 654 655 if (data->vif) { 656 data->error = true; 657 return; 658 } 659 660 data->vif = vif; 661 } 662 663 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 664 { 665 struct iwl_bss_iter_data bss_iter_data = {}; 666 667 ieee80211_iterate_active_interfaces_atomic( 668 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 669 iwl_mvm_bss_iface_iterator, &bss_iter_data); 670 671 if (bss_iter_data.error) { 672 IWL_ERR(mvm, "More than one managed interface active!\n"); 673 return ERR_PTR(-EINVAL); 674 } 675 676 return bss_iter_data.vif; 677 } 678 679 struct iwl_bss_find_iter_data { 680 struct ieee80211_vif *vif; 681 u32 macid; 682 }; 683 684 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 685 struct ieee80211_vif *vif) 686 { 687 struct iwl_bss_find_iter_data *data = _data; 688 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 689 690 if (mvmvif->id == data->macid) 691 data->vif = vif; 692 } 693 694 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 695 { 696 struct iwl_bss_find_iter_data data = { 697 .macid = macid, 698 }; 699 700 lockdep_assert_held(&mvm->mutex); 701 702 ieee80211_iterate_active_interfaces_atomic( 703 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 704 iwl_mvm_bss_find_iface_iterator, &data); 705 706 return data.vif; 707 } 708 709 struct iwl_sta_iter_data { 710 bool assoc; 711 }; 712 713 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 714 struct ieee80211_vif *vif) 715 { 716 struct iwl_sta_iter_data *data = _data; 717 718 if (vif->type != NL80211_IFTYPE_STATION) 719 return; 720 721 if (vif->cfg.assoc) 722 data->assoc = true; 723 } 724 725 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 726 { 727 struct iwl_sta_iter_data data = { 728 .assoc = false, 729 }; 730 731 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 732 IEEE80211_IFACE_ITER_NORMAL, 733 iwl_mvm_sta_iface_iterator, 734 &data); 735 return data.assoc; 736 } 737 738 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 739 struct ieee80211_vif *vif, 740 bool tdls, bool cmd_q) 741 { 742 struct iwl_fw_dbg_trigger_tlv *trigger; 743 struct iwl_fw_dbg_trigger_txq_timer *txq_timer; 744 unsigned int default_timeout = cmd_q ? 745 IWL_DEF_WD_TIMEOUT : 746 mvm->trans->trans_cfg->base_params->wd_timeout; 747 748 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) { 749 /* 750 * We can't know when the station is asleep or awake, so we 751 * must disable the queue hang detection. 752 */ 753 if (fw_has_capa(&mvm->fw->ucode_capa, 754 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 755 vif && vif->type == NL80211_IFTYPE_AP) 756 return IWL_WATCHDOG_DISABLED; 757 return default_timeout; 758 } 759 760 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS); 761 txq_timer = (void *)trigger->data; 762 763 if (tdls) 764 return le32_to_cpu(txq_timer->tdls); 765 766 if (cmd_q) 767 return le32_to_cpu(txq_timer->command_queue); 768 769 if (WARN_ON(!vif)) 770 return default_timeout; 771 772 switch (ieee80211_vif_type_p2p(vif)) { 773 case NL80211_IFTYPE_ADHOC: 774 return le32_to_cpu(txq_timer->ibss); 775 case NL80211_IFTYPE_STATION: 776 return le32_to_cpu(txq_timer->bss); 777 case NL80211_IFTYPE_AP: 778 return le32_to_cpu(txq_timer->softap); 779 case NL80211_IFTYPE_P2P_CLIENT: 780 return le32_to_cpu(txq_timer->p2p_client); 781 case NL80211_IFTYPE_P2P_GO: 782 return le32_to_cpu(txq_timer->p2p_go); 783 case NL80211_IFTYPE_P2P_DEVICE: 784 return le32_to_cpu(txq_timer->p2p_device); 785 case NL80211_IFTYPE_MONITOR: 786 return default_timeout; 787 default: 788 WARN_ON(1); 789 return mvm->trans->trans_cfg->base_params->wd_timeout; 790 } 791 } 792 793 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 794 const char *errmsg) 795 { 796 struct iwl_fw_dbg_trigger_tlv *trig; 797 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 798 799 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 800 FW_DBG_TRIGGER_MLME); 801 if (!trig) 802 goto out; 803 804 trig_mlme = (void *)trig->data; 805 806 if (trig_mlme->stop_connection_loss && 807 --trig_mlme->stop_connection_loss) 808 goto out; 809 810 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 811 812 out: 813 ieee80211_connection_loss(vif); 814 } 815 816 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 817 struct ieee80211_vif *vif, 818 const struct ieee80211_sta *sta, 819 u16 tid) 820 { 821 struct iwl_fw_dbg_trigger_tlv *trig; 822 struct iwl_fw_dbg_trigger_ba *ba_trig; 823 824 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 825 FW_DBG_TRIGGER_BA); 826 if (!trig) 827 return; 828 829 ba_trig = (void *)trig->data; 830 831 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 832 return; 833 834 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 835 "Frame from %pM timed out, tid %d", 836 sta->addr, tid); 837 } 838 839 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 840 { 841 if (!elapsed) 842 return 0; 843 844 return (100 * airtime / elapsed) / USEC_PER_MSEC; 845 } 846 847 static enum iwl_mvm_traffic_load 848 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 849 { 850 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 851 852 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 853 return IWL_MVM_TRAFFIC_HIGH; 854 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 855 return IWL_MVM_TRAFFIC_MEDIUM; 856 857 return IWL_MVM_TRAFFIC_LOW; 858 } 859 860 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 861 { 862 struct iwl_mvm *mvm = _data; 863 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 864 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 865 866 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 867 return; 868 869 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 870 871 if (!mvm->tcm.result.change[mvmvif->id] && 872 prev == low_latency) { 873 iwl_mvm_update_quotas(mvm, false, NULL); 874 return; 875 } 876 877 if (prev != low_latency) { 878 /* this sends traffic load and updates quota as well */ 879 iwl_mvm_update_low_latency(mvm, vif, low_latency, 880 LOW_LATENCY_TRAFFIC); 881 } else { 882 iwl_mvm_update_quotas(mvm, false, NULL); 883 } 884 } 885 886 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 887 { 888 mutex_lock(&mvm->mutex); 889 890 ieee80211_iterate_active_interfaces( 891 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 892 iwl_mvm_tcm_iter, mvm); 893 894 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 895 iwl_mvm_config_scan(mvm); 896 897 mutex_unlock(&mvm->mutex); 898 } 899 900 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 901 { 902 struct iwl_mvm *mvm; 903 struct iwl_mvm_vif *mvmvif; 904 struct ieee80211_vif *vif; 905 906 mvmvif = container_of(wk, struct iwl_mvm_vif, 907 uapsd_nonagg_detected_wk.work); 908 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 909 mvm = mvmvif->mvm; 910 911 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 912 return; 913 914 /* remember that this AP is broken */ 915 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 916 vif->bss_conf.bssid, ETH_ALEN); 917 mvm->uapsd_noagg_bssid_write_idx++; 918 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 919 mvm->uapsd_noagg_bssid_write_idx = 0; 920 921 iwl_mvm_connection_loss(mvm, vif, 922 "AP isn't using AMPDU with uAPSD enabled"); 923 } 924 925 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 926 struct ieee80211_vif *vif) 927 { 928 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 929 930 if (vif->type != NL80211_IFTYPE_STATION) 931 return; 932 933 if (!vif->cfg.assoc) 934 return; 935 936 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 937 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 938 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 939 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) 940 return; 941 942 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 943 return; 944 945 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 946 IWL_INFO(mvm, 947 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 948 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 949 15 * HZ); 950 } 951 952 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 953 unsigned int elapsed, 954 int mac) 955 { 956 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 957 u64 tpt; 958 unsigned long rate; 959 struct ieee80211_vif *vif; 960 961 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 962 963 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 964 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 965 return; 966 967 if (iwl_mvm_has_new_rx_api(mvm)) { 968 tpt = 8 * bytes; /* kbps */ 969 do_div(tpt, elapsed); 970 rate *= 1000; /* kbps */ 971 if (tpt < 22 * rate / 100) 972 return; 973 } else { 974 /* 975 * the rate here is actually the threshold, in 100Kbps units, 976 * so do the needed conversion from bytes to 100Kbps: 977 * 100kb = bits / (100 * 1000), 978 * 100kbps = 100kb / (msecs / 1000) == 979 * (bits / (100 * 1000)) / (msecs / 1000) == 980 * bits / (100 * msecs) 981 */ 982 tpt = (8 * bytes); 983 do_div(tpt, elapsed * 100); 984 if (tpt < rate) 985 return; 986 } 987 988 rcu_read_lock(); 989 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 990 if (vif) 991 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 992 rcu_read_unlock(); 993 } 994 995 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 996 struct ieee80211_vif *vif) 997 { 998 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 999 u32 *band = _data; 1000 1001 if (!mvmvif->deflink.phy_ctxt) 1002 return; 1003 1004 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band; 1005 } 1006 1007 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 1008 unsigned long ts, 1009 bool handle_uapsd) 1010 { 1011 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 1012 unsigned int uapsd_elapsed = 1013 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 1014 u32 total_airtime = 0; 1015 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 1016 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 1017 int ac, mac, i; 1018 bool low_latency = false; 1019 enum iwl_mvm_traffic_load load, band_load; 1020 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 1021 1022 if (handle_ll) 1023 mvm->tcm.ll_ts = ts; 1024 if (handle_uapsd) 1025 mvm->tcm.uapsd_nonagg_ts = ts; 1026 1027 mvm->tcm.result.elapsed = elapsed; 1028 1029 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1030 IEEE80211_IFACE_ITER_NORMAL, 1031 iwl_mvm_tcm_iterator, 1032 &band); 1033 1034 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1035 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1036 u32 vo_vi_pkts = 0; 1037 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1038 1039 total_airtime += airtime; 1040 band_airtime[band[mac]] += airtime; 1041 1042 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1043 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1044 mvm->tcm.result.load[mac] = load; 1045 mvm->tcm.result.airtime[mac] = airtime; 1046 1047 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1048 vo_vi_pkts += mdata->rx.pkts[ac] + 1049 mdata->tx.pkts[ac]; 1050 1051 /* enable immediately with enough packets but defer disabling */ 1052 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1053 mvm->tcm.result.low_latency[mac] = true; 1054 else if (handle_ll) 1055 mvm->tcm.result.low_latency[mac] = false; 1056 1057 if (handle_ll) { 1058 /* clear old data */ 1059 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1060 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1061 } 1062 low_latency |= mvm->tcm.result.low_latency[mac]; 1063 1064 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1065 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1066 mac); 1067 /* clear old data */ 1068 if (handle_uapsd) 1069 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1070 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1071 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1072 } 1073 1074 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1075 mvm->tcm.result.global_load = load; 1076 1077 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1078 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1079 mvm->tcm.result.band_load[i] = band_load; 1080 } 1081 1082 /* 1083 * If the current load isn't low we need to force re-evaluation 1084 * in the TCM period, so that we can return to low load if there 1085 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1086 * triggered by traffic). 1087 */ 1088 if (load != IWL_MVM_TRAFFIC_LOW) 1089 return MVM_TCM_PERIOD; 1090 /* 1091 * If low-latency is active we need to force re-evaluation after 1092 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1093 * when there's no traffic at all. 1094 */ 1095 if (low_latency) 1096 return MVM_LL_PERIOD; 1097 /* 1098 * Otherwise, we don't need to run the work struct because we're 1099 * in the default "idle" state - traffic indication is low (which 1100 * also covers the "no traffic" case) and low-latency is disabled 1101 * so there's no state that may need to be disabled when there's 1102 * no traffic at all. 1103 * 1104 * Note that this has no impact on the regular scheduling of the 1105 * updates triggered by traffic - those happen whenever one of the 1106 * two timeouts expire (if there's traffic at all.) 1107 */ 1108 return 0; 1109 } 1110 1111 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1112 { 1113 unsigned long ts = jiffies; 1114 bool handle_uapsd = 1115 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1116 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1117 1118 spin_lock(&mvm->tcm.lock); 1119 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1120 spin_unlock(&mvm->tcm.lock); 1121 return; 1122 } 1123 spin_unlock(&mvm->tcm.lock); 1124 1125 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1126 mutex_lock(&mvm->mutex); 1127 if (iwl_mvm_request_statistics(mvm, true)) 1128 handle_uapsd = false; 1129 mutex_unlock(&mvm->mutex); 1130 } 1131 1132 spin_lock(&mvm->tcm.lock); 1133 /* re-check if somebody else won the recheck race */ 1134 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1135 /* calculate statistics */ 1136 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1137 handle_uapsd); 1138 1139 /* the memset needs to be visible before the timestamp */ 1140 smp_mb(); 1141 mvm->tcm.ts = ts; 1142 if (work_delay) 1143 schedule_delayed_work(&mvm->tcm.work, work_delay); 1144 } 1145 spin_unlock(&mvm->tcm.lock); 1146 1147 iwl_mvm_tcm_results(mvm); 1148 } 1149 1150 void iwl_mvm_tcm_work(struct work_struct *work) 1151 { 1152 struct delayed_work *delayed_work = to_delayed_work(work); 1153 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1154 tcm.work); 1155 1156 iwl_mvm_recalc_tcm(mvm); 1157 } 1158 1159 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1160 { 1161 spin_lock_bh(&mvm->tcm.lock); 1162 mvm->tcm.paused = true; 1163 spin_unlock_bh(&mvm->tcm.lock); 1164 if (with_cancel) 1165 cancel_delayed_work_sync(&mvm->tcm.work); 1166 } 1167 1168 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1169 { 1170 int mac; 1171 bool low_latency = false; 1172 1173 spin_lock_bh(&mvm->tcm.lock); 1174 mvm->tcm.ts = jiffies; 1175 mvm->tcm.ll_ts = jiffies; 1176 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1177 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1178 1179 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1180 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1181 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1182 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1183 1184 if (mvm->tcm.result.low_latency[mac]) 1185 low_latency = true; 1186 } 1187 /* The TCM data needs to be reset before "paused" flag changes */ 1188 smp_mb(); 1189 mvm->tcm.paused = false; 1190 1191 /* 1192 * if the current load is not low or low latency is active, force 1193 * re-evaluation to cover the case of no traffic. 1194 */ 1195 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1196 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1197 else if (low_latency) 1198 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1199 1200 spin_unlock_bh(&mvm->tcm.lock); 1201 } 1202 1203 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1204 { 1205 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1206 1207 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1208 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1209 } 1210 1211 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1212 { 1213 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1214 1215 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1216 } 1217 1218 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1219 { 1220 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1221 1222 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1223 mvm->trans->cfg->gp2_reg_addr) 1224 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1225 1226 return iwl_read_prph(mvm->trans, reg_addr); 1227 } 1228 1229 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, 1230 u32 *gp2, u64 *boottime, ktime_t *realtime) 1231 { 1232 bool ps_disabled; 1233 1234 lockdep_assert_held(&mvm->mutex); 1235 1236 /* Disable power save when reading GP2 */ 1237 ps_disabled = mvm->ps_disabled; 1238 if (!ps_disabled) { 1239 mvm->ps_disabled = true; 1240 iwl_mvm_power_update_device(mvm); 1241 } 1242 1243 *gp2 = iwl_mvm_get_systime(mvm); 1244 1245 if (clock_type == CLOCK_BOOTTIME && boottime) 1246 *boottime = ktime_get_boottime_ns(); 1247 else if (clock_type == CLOCK_REALTIME && realtime) 1248 *realtime = ktime_get_real(); 1249 1250 if (!ps_disabled) { 1251 mvm->ps_disabled = ps_disabled; 1252 iwl_mvm_power_update_device(mvm); 1253 } 1254 } 1255 1256 /* Find if at least two links from different vifs use same channel 1257 * FIXME: consider having a refcount array in struct iwl_mvm_vif for 1258 * used phy_ctxt ids. 1259 */ 1260 bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1, 1261 struct iwl_mvm_vif *vif2) 1262 { 1263 unsigned int i, j; 1264 1265 for_each_mvm_vif_valid_link(vif1, i) { 1266 for_each_mvm_vif_valid_link(vif2, j) { 1267 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt) 1268 return true; 1269 } 1270 } 1271 1272 return false; 1273 } 1274 1275 bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif) 1276 { 1277 unsigned int i; 1278 1279 /* FIXME: can it fail when phy_ctxt is assigned? */ 1280 for_each_mvm_vif_valid_link(mvmvif, i) { 1281 if (mvmvif->link[i]->phy_ctxt && 1282 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX) 1283 return true; 1284 } 1285 1286 return false; 1287 } 1288