drivers/net/wireless/intel/iwlwifi/mvm/tt.c

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2019-2022 Intel Corporation
   4  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
   5  * Copyright (C) 2015-2016 Intel Deutschland GmbH
   6  */
   7 #include <linux/sort.h>
   8
   9 #include "mvm.h"
  10
  11 #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
  12
  13 void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)
  14 {
  15         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
  16         u32 duration = tt->params.ct_kill_duration;
  17
  18         if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
  19                 return;
  20
  21         IWL_ERR(mvm, "Enter CT Kill\n");
  22         iwl_mvm_set_hw_ctkill_state(mvm, true);
  23
  24         if (!iwl_mvm_is_tt_in_fw(mvm)) {
  25                 tt->throttle = false;
  26                 tt->dynamic_smps = false;
  27         }
  28
  29         /* Don't schedule an exit work if we're in test mode, since
  30          * the temperature will not change unless we manually set it
  31          * again (or disable testing).
  32          */
  33         if (!mvm->temperature_test)
  34                 schedule_delayed_work(&tt->ct_kill_exit,
  35                                       round_jiffies_relative(duration * HZ));
  36 }
  37
  38 static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm)
  39 {
  40         if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
  41                 return;
  42
  43         IWL_ERR(mvm, "Exit CT Kill\n");
  44         iwl_mvm_set_hw_ctkill_state(mvm, false);
  45 }
  46
  47 static void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp)
  48 {
  49         /* ignore the notification if we are in test mode */
  50         if (mvm->temperature_test)
  51                 return;
  52
  53         if (mvm->temperature == temp)
  54                 return;
  55
  56         mvm->temperature = temp;
  57         iwl_mvm_tt_handler(mvm);
  58 }
  59
  60 static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
  61                                     struct iwl_rx_packet *pkt)
  62 {
  63         struct iwl_dts_measurement_notif_v1 *notif_v1;
  64         int len = iwl_rx_packet_payload_len(pkt);
  65         int temp;
  66
  67         /* we can use notif_v1 only, because v2 only adds an additional
  68          * parameter, which is not used in this function.
  69         */
  70         if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
  71                 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
  72                 return -EINVAL;
  73         }
  74
  75         notif_v1 = (void *)pkt->data;
  76
  77         temp = le32_to_cpu(notif_v1->temp);
  78
  79         /* shouldn't be negative, but since it's s32, make sure it isn't */
  80         if (WARN_ON_ONCE(temp < 0))
  81                 temp = 0;
  82
  83         IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
  84
  85         return temp;
  86 }
  87
  88 static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait,
  89                                     struct iwl_rx_packet *pkt, void *data)
  90 {
  91         struct iwl_mvm *mvm =
  92                 container_of(notif_wait, struct iwl_mvm, notif_wait);
  93         int *temp = data;
  94         int ret;
  95
  96         ret = iwl_mvm_temp_notif_parse(mvm, pkt);
  97         if (ret < 0)
  98                 return true;
  99
 100         *temp = ret;
 101
 102         return true;
 103 }
 104
 105 void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 106 {
 107         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 108         struct iwl_dts_measurement_notif_v2 *notif_v2;
 109         int len = iwl_rx_packet_payload_len(pkt);
 110         int temp;
 111         u32 ths_crossed;
 112
 113         /* the notification is handled synchronously in ctkill, so skip here */
 114         if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
 115                 return;
 116
 117         temp = iwl_mvm_temp_notif_parse(mvm, pkt);
 118
 119         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 120                 if (temp >= 0)
 121                         iwl_mvm_tt_temp_changed(mvm, temp);
 122                 return;
 123         }
 124
 125         if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
 126                 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
 127                 return;
 128         }
 129
 130         notif_v2 = (void *)pkt->data;
 131         ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
 132
 133         /* 0xFF in ths_crossed means the notification is not related
 134          * to a trip, so we can ignore it here.
 135          */
 136         if (ths_crossed == 0xFF)
 137                 return;
 138
 139         IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
 140                        temp, ths_crossed);
 141
 142 #ifdef CONFIG_THERMAL
 143         if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
 144                 return;
 145
 146         if (mvm->tz_device.tzone) {
 147                 struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device;
 148
 149                 thermal_zone_device_update(tz_dev->tzone,
 150                                            THERMAL_TRIP_VIOLATED);
 151         }
 152 #endif /* CONFIG_THERMAL */
 153 }
 154
 155 void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 156 {
 157         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 158         struct ct_kill_notif *notif;
 159
 160         notif = (struct ct_kill_notif *)pkt->data;
 161         IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
 162                        notif->temperature);
 163         if (iwl_fw_lookup_notif_ver(mvm->fw, PHY_OPS_GROUP,
 164                                     CT_KILL_NOTIFICATION, 0) > 1)
 165                 IWL_DEBUG_TEMP(mvm,
 166                                "CT kill notification DTS bitmap = 0x%x, Scheme = %d\n",
 167                                notif->dts, notif->scheme);
 168
 169         iwl_mvm_enter_ctkill(mvm);
 170 }
 171
 172 /*
 173  * send the DTS_MEASUREMENT_TRIGGER command with or without waiting for a
 174  * response. If we get a response then the measurement is stored in 'temp'
 175  */
 176 static int iwl_mvm_send_temp_cmd(struct iwl_mvm *mvm, bool response, s32 *temp)
 177 {
 178         struct iwl_host_cmd cmd = {};
 179         struct iwl_dts_measurement_cmd dts_cmd = {
 180                 .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
 181         };
 182         struct iwl_ext_dts_measurement_cmd ext_cmd = {
 183                 .control_mode = cpu_to_le32(DTS_DIRECT_WITHOUT_MEASURE),
 184         };
 185         struct iwl_dts_measurement_resp *resp;
 186         void *cmd_ptr;
 187         int ret;
 188         u32 cmd_flags = 0;
 189         u16 len;
 190
 191         /* Check which command format is used (regular/extended) */
 192         if (fw_has_capa(&mvm->fw->ucode_capa,
 193                         IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) {
 194                 len = sizeof(ext_cmd);
 195                 cmd_ptr = &ext_cmd;
 196         } else {
 197                 len = sizeof(dts_cmd);
 198                 cmd_ptr = &dts_cmd;
 199         }
 200         /* The command version where we get a response is zero length */
 201         if (response) {
 202                 cmd_flags = CMD_WANT_SKB;
 203                 len = 0;
 204         }
 205
 206         cmd.id =  WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE);
 207         cmd.len[0] = len;
 208         cmd.flags = cmd_flags;
 209         cmd.data[0] = cmd_ptr;
 210
 211         IWL_DEBUG_TEMP(mvm,
 212                        "Sending temperature measurement command - %s response\n",
 213                        response ? "with" : "without");
 214         ret = iwl_mvm_send_cmd(mvm, &cmd);
 215
 216         if (ret) {
 217                 IWL_ERR(mvm,
 218                         "Failed to send the temperature measurement command (err=%d)\n",
 219                         ret);
 220                 return ret;
 221         }
 222
 223         if (response) {
 224                 resp = (void *)cmd.resp_pkt->data;
 225                 *temp = le32_to_cpu(resp->temp);
 226                 IWL_DEBUG_TEMP(mvm,
 227                                "Got temperature measurement response: temp=%d\n",
 228                                *temp);
 229                 iwl_free_resp(&cmd);
 230         }
 231
 232         return ret;
 233 }
 234
 235 int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
 236 {
 237         struct iwl_notification_wait wait_temp_notif;
 238         static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
 239                                             DTS_MEASUREMENT_NOTIF_WIDE) };
 240         int ret;
 241         u8 cmd_ver;
 242
 243         /*
 244          * If command version is 1 we send the command and immediately get
 245          * a response. For older versions we send the command and wait for a
 246          * notification (no command TLV for previous versions).
 247          */
 248         cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
 249                                         WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
 250                                         IWL_FW_CMD_VER_UNKNOWN);
 251         if (cmd_ver == 1)
 252                 return iwl_mvm_send_temp_cmd(mvm, true, temp);
 253
 254         lockdep_assert_held(&mvm->mutex);
 255
 256         iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
 257                                    temp_notif, ARRAY_SIZE(temp_notif),
 258                                    iwl_mvm_temp_notif_wait, temp);
 259
 260         ret = iwl_mvm_send_temp_cmd(mvm, false, temp);
 261         if (ret) {
 262                 iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
 263                 return ret;
 264         }
 265
 266         ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
 267                                     IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
 268         if (ret)
 269                 IWL_WARN(mvm, "Getting the temperature timed out\n");
 270
 271         return ret;
 272 }
 273
 274 static void check_exit_ctkill(struct work_struct *work)
 275 {
 276         struct iwl_mvm_tt_mgmt *tt;
 277         struct iwl_mvm *mvm;
 278         u32 duration;
 279         s32 temp;
 280         int ret;
 281
 282         tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
 283         mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
 284
 285         if (iwl_mvm_is_tt_in_fw(mvm)) {
 286                 iwl_mvm_exit_ctkill(mvm);
 287
 288                 return;
 289         }
 290
 291         duration = tt->params.ct_kill_duration;
 292
 293         flush_work(&mvm->roc_done_wk);
 294
 295         mutex_lock(&mvm->mutex);
 296
 297         if (__iwl_mvm_mac_start(mvm))
 298                 goto reschedule;
 299
 300         ret = iwl_mvm_get_temp(mvm, &temp);
 301
 302         __iwl_mvm_mac_stop(mvm);
 303
 304         if (ret)
 305                 goto reschedule;
 306
 307         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
 308
 309         if (temp <= tt->params.ct_kill_exit) {
 310                 mutex_unlock(&mvm->mutex);
 311                 iwl_mvm_exit_ctkill(mvm);
 312                 return;
 313         }
 314
 315 reschedule:
 316         mutex_unlock(&mvm->mutex);
 317         schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
 318                               round_jiffies(duration * HZ));
 319 }
 320
 321 static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
 322                                      struct ieee80211_vif *vif)
 323 {
 324         struct iwl_mvm *mvm = _data;
 325         enum ieee80211_smps_mode smps_mode;
 326
 327         lockdep_assert_held(&mvm->mutex);
 328
 329         if (mvm->thermal_throttle.dynamic_smps)
 330                 smps_mode = IEEE80211_SMPS_DYNAMIC;
 331         else
 332                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 333
 334         if (vif->type != NL80211_IFTYPE_STATION)
 335                 return;
 336
 337         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode, 0);
 338 }
 339
 340 static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
 341 {
 342         struct iwl_mvm_sta *mvmsta;
 343         int i, err;
 344
 345         for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
 346                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
 347                 if (!mvmsta)
 348                         continue;
 349
 350                 if (enable == mvmsta->tt_tx_protection)
 351                         continue;
 352                 err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
 353                 if (err) {
 354                         IWL_ERR(mvm, "Failed to %s Tx protection\n",
 355                                 enable ? "enable" : "disable");
 356                 } else {
 357                         IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
 358                                        enable ? "Enable" : "Disable");
 359                         mvmsta->tt_tx_protection = enable;
 360                 }
 361         }
 362 }
 363
 364 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
 365 {
 366         struct iwl_host_cmd cmd = {
 367                 .id = REPLY_THERMAL_MNG_BACKOFF,
 368                 .len = { sizeof(u32), },
 369                 .data = { &backoff, },
 370         };
 371
 372         backoff = max(backoff, mvm->thermal_throttle.min_backoff);
 373
 374         if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
 375                 IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
 376                                backoff);
 377                 mvm->thermal_throttle.tx_backoff = backoff;
 378         } else {
 379                 IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
 380         }
 381 }
 382
 383 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
 384 {
 385         struct iwl_tt_params *params = &mvm->thermal_throttle.params;
 386         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 387         s32 temperature = mvm->temperature;
 388         bool throttle_enable = false;
 389         int i;
 390         u32 tx_backoff;
 391
 392         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
 393
 394         if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
 395                 iwl_mvm_enter_ctkill(mvm);
 396                 return;
 397         }
 398
 399         if (params->support_ct_kill &&
 400             temperature <= params->ct_kill_exit) {
 401                 iwl_mvm_exit_ctkill(mvm);
 402                 return;
 403         }
 404
 405         if (params->support_dynamic_smps) {
 406                 if (!tt->dynamic_smps &&
 407                     temperature >= params->dynamic_smps_entry) {
 408                         IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
 409                         tt->dynamic_smps = true;
 410                         ieee80211_iterate_active_interfaces_atomic(
 411                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 412                                         iwl_mvm_tt_smps_iterator, mvm);
 413                         throttle_enable = true;
 414                 } else if (tt->dynamic_smps &&
 415                            temperature <= params->dynamic_smps_exit) {
 416                         IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
 417                         tt->dynamic_smps = false;
 418                         ieee80211_iterate_active_interfaces_atomic(
 419                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 420                                         iwl_mvm_tt_smps_iterator, mvm);
 421                 }
 422         }
 423
 424         if (params->support_tx_protection) {
 425                 if (temperature >= params->tx_protection_entry) {
 426                         iwl_mvm_tt_tx_protection(mvm, true);
 427                         throttle_enable = true;
 428                 } else if (temperature <= params->tx_protection_exit) {
 429                         iwl_mvm_tt_tx_protection(mvm, false);
 430                 }
 431         }
 432
 433         if (params->support_tx_backoff) {
 434                 tx_backoff = tt->min_backoff;
 435                 for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
 436                         if (temperature < params->tx_backoff[i].temperature)
 437                                 break;
 438                         tx_backoff = max(tt->min_backoff,
 439                                          params->tx_backoff[i].backoff);
 440                 }
 441                 if (tx_backoff != tt->min_backoff)
 442                         throttle_enable = true;
 443                 if (tt->tx_backoff != tx_backoff)
 444                         iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
 445         }
 446
 447         if (!tt->throttle && throttle_enable) {
 448                 IWL_WARN(mvm,
 449                          "Due to high temperature thermal throttling initiated\n");
 450                 tt->throttle = true;
 451         } else if (tt->throttle && !tt->dynamic_smps &&
 452                    tt->tx_backoff == tt->min_backoff &&
 453                    temperature <= params->tx_protection_exit) {
 454                 IWL_WARN(mvm,
 455                          "Temperature is back to normal thermal throttling stopped\n");
 456                 tt->throttle = false;
 457         }
 458 }
 459
 460 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
 461         .ct_kill_entry = 118,
 462         .ct_kill_exit = 96,
 463         .ct_kill_duration = 5,
 464         .dynamic_smps_entry = 114,
 465         .dynamic_smps_exit = 110,
 466         .tx_protection_entry = 114,
 467         .tx_protection_exit = 108,
 468         .tx_backoff = {
 469                 {.temperature = 112, .backoff = 200},
 470                 {.temperature = 113, .backoff = 600},
 471                 {.temperature = 114, .backoff = 1200},
 472                 {.temperature = 115, .backoff = 2000},
 473                 {.temperature = 116, .backoff = 4000},
 474                 {.temperature = 117, .backoff = 10000},
 475         },
 476         .support_ct_kill = true,
 477         .support_dynamic_smps = true,
 478         .support_tx_protection = true,
 479         .support_tx_backoff = true,
 480 };
 481
 482 /* budget in mWatt */
 483 static const u32 iwl_mvm_cdev_budgets[] = {
 484         2400,   /* cooling state 0 */
 485         2000,   /* cooling state 1 */
 486         1800,   /* cooling state 2 */
 487         1600,   /* cooling state 3 */
 488         1400,   /* cooling state 4 */
 489         1200,   /* cooling state 5 */
 490         1000,   /* cooling state 6 */
 491         900,    /* cooling state 7 */
 492         800,    /* cooling state 8 */
 493         700,    /* cooling state 9 */
 494         650,    /* cooling state 10 */
 495         600,    /* cooling state 11 */
 496         550,    /* cooling state 12 */
 497         500,    /* cooling state 13 */
 498         450,    /* cooling state 14 */
 499         400,    /* cooling state 15 */
 500         350,    /* cooling state 16 */
 501         300,    /* cooling state 17 */
 502         250,    /* cooling state 18 */
 503         200,    /* cooling state 19 */
 504         150,    /* cooling state 20 */
 505 };
 506
 507 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
 508 {
 509         struct iwl_mvm_ctdp_cmd cmd = {
 510                 .operation = cpu_to_le32(op),
 511                 .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
 512                 .window_size = 0,
 513         };
 514         int ret;
 515         u32 status;
 516
 517         lockdep_assert_held(&mvm->mutex);
 518
 519         status = 0;
 520         ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
 521                                                        CTDP_CONFIG_CMD),
 522                                           sizeof(cmd), &cmd, &status);
 523
 524         if (ret) {
 525                 IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
 526                 return ret;
 527         }
 528
 529         switch (op) {
 530         case CTDP_CMD_OPERATION_START:
 531 #ifdef CONFIG_THERMAL
 532                 mvm->cooling_dev.cur_state = state;
 533 #endif /* CONFIG_THERMAL */
 534                 break;
 535         case CTDP_CMD_OPERATION_REPORT:
 536                 IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
 537                 /* when the function is called with CTDP_CMD_OPERATION_REPORT
 538                  * option the function should return the average budget value
 539                  * that is received from the FW.
 540                  * The budget can't be less or equal to 0, so it's possible
 541                  * to distinguish between error values and budgets.
 542                  */
 543                 return status;
 544         case CTDP_CMD_OPERATION_STOP:
 545                 IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
 546                 break;
 547         }
 548
 549         return 0;
 550 }
 551
 552 #ifdef CONFIG_THERMAL
 553 static int compare_temps(const void *a, const void *b)
 554 {
 555         return ((s16)le16_to_cpu(*(__le16 *)a) -
 556                 (s16)le16_to_cpu(*(__le16 *)b));
 557 }
 558 #endif
 559
 560 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
 561 {
 562         struct temp_report_ths_cmd cmd = {0};
 563         int ret;
 564 #ifdef CONFIG_THERMAL
 565         int i, idx = 0;
 566
 567         lockdep_assert_held(&mvm->mutex);
 568
 569         if (!mvm->tz_device.tzone)
 570                 goto send;
 571
 572         /* The driver holds array of temperature trips that are unsorted
 573          * and uncompressed, the FW should get it compressed and sorted
 574          */
 575
 576         /* compress trips to cmd array, remove uninitialized values*/
 577         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 578                 if (mvm->tz_device.trips[i].temperature != THERMAL_TEMP_INVALID) {
 579                         cmd.thresholds[idx++] =
 580                                 cpu_to_le16((s16)(mvm->tz_device.trips[i].temperature / 1000));
 581                 }
 582         }
 583         cmd.num_temps = cpu_to_le32(idx);
 584
 585         if (!idx)
 586                 goto send;
 587
 588         /*sort cmd array*/
 589         sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
 590
 591 send:
 592 #endif
 593         ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
 594                                                 TEMP_REPORTING_THRESHOLDS_CMD),
 595                                    0, sizeof(cmd), &cmd);
 596         if (ret)
 597                 IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
 598                         ret);
 599
 600         return ret;
 601 }
 602
 603 #ifdef CONFIG_THERMAL
 604 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
 605                                   int *temperature)
 606 {
 607         struct iwl_mvm *mvm = thermal_zone_device_priv(device);
 608         int ret;
 609         int temp;
 610
 611         mutex_lock(&mvm->mutex);
 612
 613         if (!iwl_mvm_firmware_running(mvm) ||
 614             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 615                 ret = -ENODATA;
 616                 goto out;
 617         }
 618
 619         ret = iwl_mvm_get_temp(mvm, &temp);
 620         if (ret)
 621                 goto out;
 622
 623         *temperature = temp * 1000;
 624
 625 out:
 626         mutex_unlock(&mvm->mutex);
 627         return ret;
 628 }
 629
 630 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
 631                                        int trip, int temp)
 632 {
 633         struct iwl_mvm *mvm = thermal_zone_device_priv(device);
 634         int ret;
 635
 636         mutex_lock(&mvm->mutex);
 637
 638         if (!iwl_mvm_firmware_running(mvm) ||
 639             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 640                 ret = -EIO;
 641                 goto out;
 642         }
 643
 644         if ((temp / 1000) > S16_MAX) {
 645                 ret = -EINVAL;
 646                 goto out;
 647         }
 648
 649         ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
 650 out:
 651         mutex_unlock(&mvm->mutex);
 652         return ret;
 653 }
 654
 655 static  struct thermal_zone_device_ops tzone_ops = {
 656         .get_temp = iwl_mvm_tzone_get_temp,
 657         .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
 658 };
 659
 660 /* make all trips writable */
 661 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
 662
 663 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 664 {
 665         int i, ret;
 666         char name[16];
 667         static atomic_t counter = ATOMIC_INIT(0);
 668
 669         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 670                 mvm->tz_device.tzone = NULL;
 671
 672                 return;
 673         }
 674
 675         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 676
 677         sprintf(name, "iwlwifi_%u", atomic_inc_return(&counter) & 0xFF);
 678         /*
 679          * 0 is a valid temperature,
 680          * so initialize the array with S16_MIN which invalid temperature
 681          */
 682         for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) {
 683                 mvm->tz_device.trips[i].temperature = THERMAL_TEMP_INVALID;
 684                 mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE;
 685         }
 686         mvm->tz_device.tzone = thermal_zone_device_register_with_trips(name,
 687                                                         mvm->tz_device.trips,
 688                                                         IWL_MAX_DTS_TRIPS,
 689                                                         IWL_WRITABLE_TRIPS_MSK,
 690                                                         mvm, &tzone_ops,
 691                                                         NULL, 0, 0);
 692         if (IS_ERR(mvm->tz_device.tzone)) {
 693                 IWL_DEBUG_TEMP(mvm,
 694                                "Failed to register to thermal zone (err = %ld)\n",
 695                                PTR_ERR(mvm->tz_device.tzone));
 696                 mvm->tz_device.tzone = NULL;
 697                 return;
 698         }
 699
 700         ret = thermal_zone_device_enable(mvm->tz_device.tzone);
 701         if (ret) {
 702                 IWL_DEBUG_TEMP(mvm, "Failed to enable thermal zone\n");
 703                 thermal_zone_device_unregister(mvm->tz_device.tzone);
 704         }
 705 }
 706
 707 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
 708                                        unsigned long *state)
 709 {
 710         *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
 711
 712         return 0;
 713 }
 714
 715 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
 716                                        unsigned long *state)
 717 {
 718         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 719
 720         *state = mvm->cooling_dev.cur_state;
 721
 722         return 0;
 723 }
 724
 725 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 726                                        unsigned long new_state)
 727 {
 728         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 729         int ret;
 730
 731         mutex_lock(&mvm->mutex);
 732
 733         if (!iwl_mvm_firmware_running(mvm) ||
 734             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 735                 ret = -EIO;
 736                 goto unlock;
 737         }
 738
 739         if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
 740                 ret = -EINVAL;
 741                 goto unlock;
 742         }
 743
 744         ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
 745                                    new_state);
 746
 747 unlock:
 748         mutex_unlock(&mvm->mutex);
 749         return ret;
 750 }
 751
 752 static const struct thermal_cooling_device_ops tcooling_ops = {
 753         .get_max_state = iwl_mvm_tcool_get_max_state,
 754         .get_cur_state = iwl_mvm_tcool_get_cur_state,
 755         .set_cur_state = iwl_mvm_tcool_set_cur_state,
 756 };
 757
 758 static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm)
 759 {
 760         char name[] = "iwlwifi";
 761
 762         if (!iwl_mvm_is_ctdp_supported(mvm))
 763                 return;
 764
 765         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 766
 767         mvm->cooling_dev.cdev =
 768                 thermal_cooling_device_register(name,
 769                                                 mvm,
 770                                                 &tcooling_ops);
 771
 772         if (IS_ERR(mvm->cooling_dev.cdev)) {
 773                 IWL_DEBUG_TEMP(mvm,
 774                                "Failed to register to cooling device (err = %ld)\n",
 775                                PTR_ERR(mvm->cooling_dev.cdev));
 776                 mvm->cooling_dev.cdev = NULL;
 777                 return;
 778         }
 779 }
 780
 781 static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
 782 {
 783         if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone)
 784                 return;
 785
 786         IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
 787         if (mvm->tz_device.tzone) {
 788                 thermal_zone_device_unregister(mvm->tz_device.tzone);
 789                 mvm->tz_device.tzone = NULL;
 790         }
 791 }
 792
 793 static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm)
 794 {
 795         if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev)
 796                 return;
 797
 798         IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
 799         if (mvm->cooling_dev.cdev) {
 800                 thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
 801                 mvm->cooling_dev.cdev = NULL;
 802         }
 803 }
 804 #endif /* CONFIG_THERMAL */
 805
 806 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
 807 {
 808         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 809
 810         IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
 811
 812         if (mvm->cfg->thermal_params)
 813                 tt->params = *mvm->cfg->thermal_params;
 814         else
 815                 tt->params = iwl_mvm_default_tt_params;
 816
 817         tt->throttle = false;
 818         tt->dynamic_smps = false;
 819         tt->min_backoff = min_backoff;
 820         INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
 821
 822 #ifdef CONFIG_THERMAL
 823         iwl_mvm_cooling_device_register(mvm);
 824         iwl_mvm_thermal_zone_register(mvm);
 825 #endif
 826         mvm->init_status |= IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
 827 }
 828
 829 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
 830 {
 831         if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE))
 832                 return;
 833
 834         cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
 835         IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
 836
 837 #ifdef CONFIG_THERMAL
 838         iwl_mvm_cooling_device_unregister(mvm);
 839         iwl_mvm_thermal_zone_unregister(mvm);
 840 #endif
 841         mvm->init_status &= ~IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
 842 }