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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
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  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
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  30  *  Intel Linux Wireless <linuxwifi@intel.com>
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  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  37  * Copyright(c) 2015 - 2016 Intel Deutschland GmbH
  38  * All rights reserved.
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  41  * modification, are permitted provided that the following conditions
  42  * are met:
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  45  *    notice, this list of conditions and the following disclaimer.
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  49  *    distribution.
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  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67
  68 #include <linux/sort.h>
  69
  70 #include "mvm.h"
  71
  72 #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
  73
  74 static void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)
  75 {
  76         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
  77         u32 duration = tt->params.ct_kill_duration;
  78
  79         if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
  80                 return;
  81
  82         IWL_ERR(mvm, "Enter CT Kill\n");
  83         iwl_mvm_set_hw_ctkill_state(mvm, true);
  84
  85         if (!iwl_mvm_is_tt_in_fw(mvm)) {
  86                 tt->throttle = false;
  87                 tt->dynamic_smps = false;
  88         }
  89
  90         /* Don't schedule an exit work if we're in test mode, since
  91          * the temperature will not change unless we manually set it
  92          * again (or disable testing).
  93          */
  94         if (!mvm->temperature_test)
  95                 schedule_delayed_work(&tt->ct_kill_exit,
  96                                       round_jiffies_relative(duration * HZ));
  97 }
  98
  99 static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm)
 100 {
 101         if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
 102                 return;
 103
 104         IWL_ERR(mvm, "Exit CT Kill\n");
 105         iwl_mvm_set_hw_ctkill_state(mvm, false);
 106 }
 107
 108 void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp)
 109 {
 110         /* ignore the notification if we are in test mode */
 111         if (mvm->temperature_test)
 112                 return;
 113
 114         if (mvm->temperature == temp)
 115                 return;
 116
 117         mvm->temperature = temp;
 118         iwl_mvm_tt_handler(mvm);
 119 }
 120
 121 static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
 122                                     struct iwl_rx_packet *pkt)
 123 {
 124         struct iwl_dts_measurement_notif_v1 *notif_v1;
 125         int len = iwl_rx_packet_payload_len(pkt);
 126         int temp;
 127
 128         /* we can use notif_v1 only, because v2 only adds an additional
 129          * parameter, which is not used in this function.
 130         */
 131         if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
 132                 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
 133                 return -EINVAL;
 134         }
 135
 136         notif_v1 = (void *)pkt->data;
 137
 138         temp = le32_to_cpu(notif_v1->temp);
 139
 140         /* shouldn't be negative, but since it's s32, make sure it isn't */
 141         if (WARN_ON_ONCE(temp < 0))
 142                 temp = 0;
 143
 144         IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
 145
 146         return temp;
 147 }
 148
 149 static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait,
 150                                     struct iwl_rx_packet *pkt, void *data)
 151 {
 152         struct iwl_mvm *mvm =
 153                 container_of(notif_wait, struct iwl_mvm, notif_wait);
 154         int *temp = data;
 155         int ret;
 156
 157         ret = iwl_mvm_temp_notif_parse(mvm, pkt);
 158         if (ret < 0)
 159                 return true;
 160
 161         *temp = ret;
 162
 163         return true;
 164 }
 165
 166 void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 167 {
 168         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 169         struct iwl_dts_measurement_notif_v2 *notif_v2;
 170         int len = iwl_rx_packet_payload_len(pkt);
 171         int temp;
 172         u32 ths_crossed;
 173
 174         /* the notification is handled synchronously in ctkill, so skip here */
 175         if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
 176                 return;
 177
 178         temp = iwl_mvm_temp_notif_parse(mvm, pkt);
 179
 180         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 181                 if (temp >= 0)
 182                         iwl_mvm_tt_temp_changed(mvm, temp);
 183                 return;
 184         }
 185
 186         if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
 187                 IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
 188                 return;
 189         }
 190
 191         notif_v2 = (void *)pkt->data;
 192         ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
 193
 194         /* 0xFF in ths_crossed means the notification is not related
 195          * to a trip, so we can ignore it here.
 196          */
 197         if (ths_crossed == 0xFF)
 198                 return;
 199
 200         IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
 201                        temp, ths_crossed);
 202
 203 #ifdef CONFIG_THERMAL
 204         if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
 205                 return;
 206
 207         if (mvm->tz_device.tzone) {
 208                 struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device;
 209
 210                 thermal_notify_framework(tz_dev->tzone,
 211                                          tz_dev->fw_trips_index[ths_crossed]);
 212         }
 213 #endif /* CONFIG_THERMAL */
 214 }
 215
 216 void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
 217 {
 218         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 219         struct ct_kill_notif *notif;
 220         int len = iwl_rx_packet_payload_len(pkt);
 221
 222         if (WARN_ON_ONCE(len != sizeof(*notif))) {
 223                 IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n");
 224                 return;
 225         }
 226
 227         notif = (struct ct_kill_notif *)pkt->data;
 228         IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
 229                        notif->temperature);
 230
 231         iwl_mvm_enter_ctkill(mvm);
 232 }
 233
 234 static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm)
 235 {
 236         struct iwl_dts_measurement_cmd cmd = {
 237                 .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
 238         };
 239         struct iwl_ext_dts_measurement_cmd extcmd = {
 240                 .control_mode = cpu_to_le32(DTS_AUTOMATIC),
 241         };
 242         u32 cmdid;
 243
 244         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR))
 245                 cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE,
 246                                    PHY_OPS_GROUP, 0);
 247         else
 248                 cmdid = CMD_DTS_MEASUREMENT_TRIGGER;
 249
 250         if (!fw_has_capa(&mvm->fw->ucode_capa,
 251                          IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE))
 252                 return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd);
 253
 254         return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd);
 255 }
 256
 257 int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
 258 {
 259         struct iwl_notification_wait wait_temp_notif;
 260         static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
 261                                             DTS_MEASUREMENT_NOTIF_WIDE) };
 262         int ret;
 263
 264         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR))
 265                 temp_notif[0] = DTS_MEASUREMENT_NOTIFICATION;
 266
 267         lockdep_assert_held(&mvm->mutex);
 268
 269         iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
 270                                    temp_notif, ARRAY_SIZE(temp_notif),
 271                                    iwl_mvm_temp_notif_wait, temp);
 272
 273         ret = iwl_mvm_get_temp_cmd(mvm);
 274         if (ret) {
 275                 IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret);
 276                 iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
 277                 return ret;
 278         }
 279
 280         ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
 281                                     IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
 282         if (ret)
 283                 IWL_ERR(mvm, "Getting the temperature timed out\n");
 284
 285         return ret;
 286 }
 287
 288 static void check_exit_ctkill(struct work_struct *work)
 289 {
 290         struct iwl_mvm_tt_mgmt *tt;
 291         struct iwl_mvm *mvm;
 292         u32 duration;
 293         s32 temp;
 294         int ret;
 295
 296         tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
 297         mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
 298
 299         if (iwl_mvm_is_tt_in_fw(mvm)) {
 300                 iwl_mvm_exit_ctkill(mvm);
 301
 302                 return;
 303         }
 304
 305         duration = tt->params.ct_kill_duration;
 306
 307         mutex_lock(&mvm->mutex);
 308
 309         if (__iwl_mvm_mac_start(mvm))
 310                 goto reschedule;
 311
 312         /* make sure the device is available for direct read/writes */
 313         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) {
 314                 __iwl_mvm_mac_stop(mvm);
 315                 goto reschedule;
 316         }
 317
 318         ret = iwl_mvm_get_temp(mvm, &temp);
 319
 320         iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL);
 321
 322         __iwl_mvm_mac_stop(mvm);
 323
 324         if (ret)
 325                 goto reschedule;
 326
 327         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
 328
 329         if (temp <= tt->params.ct_kill_exit) {
 330                 mutex_unlock(&mvm->mutex);
 331                 iwl_mvm_exit_ctkill(mvm);
 332                 return;
 333         }
 334
 335 reschedule:
 336         mutex_unlock(&mvm->mutex);
 337         schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
 338                               round_jiffies(duration * HZ));
 339 }
 340
 341 static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
 342                                      struct ieee80211_vif *vif)
 343 {
 344         struct iwl_mvm *mvm = _data;
 345         enum ieee80211_smps_mode smps_mode;
 346
 347         lockdep_assert_held(&mvm->mutex);
 348
 349         if (mvm->thermal_throttle.dynamic_smps)
 350                 smps_mode = IEEE80211_SMPS_DYNAMIC;
 351         else
 352                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 353
 354         if (vif->type != NL80211_IFTYPE_STATION)
 355                 return;
 356
 357         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
 358 }
 359
 360 static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
 361 {
 362         struct ieee80211_sta *sta;
 363         struct iwl_mvm_sta *mvmsta;
 364         int i, err;
 365
 366         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 367                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
 368                                                 lockdep_is_held(&mvm->mutex));
 369                 if (IS_ERR_OR_NULL(sta))
 370                         continue;
 371                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
 372                 if (enable == mvmsta->tt_tx_protection)
 373                         continue;
 374                 err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
 375                 if (err) {
 376                         IWL_ERR(mvm, "Failed to %s Tx protection\n",
 377                                 enable ? "enable" : "disable");
 378                 } else {
 379                         IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
 380                                        enable ? "Enable" : "Disable");
 381                         mvmsta->tt_tx_protection = enable;
 382                 }
 383         }
 384 }
 385
 386 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
 387 {
 388         struct iwl_host_cmd cmd = {
 389                 .id = REPLY_THERMAL_MNG_BACKOFF,
 390                 .len = { sizeof(u32), },
 391                 .data = { &backoff, },
 392         };
 393
 394         backoff = max(backoff, mvm->thermal_throttle.min_backoff);
 395
 396         if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
 397                 IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
 398                                backoff);
 399                 mvm->thermal_throttle.tx_backoff = backoff;
 400         } else {
 401                 IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
 402         }
 403 }
 404
 405 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
 406 {
 407         struct iwl_tt_params *params = &mvm->thermal_throttle.params;
 408         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 409         s32 temperature = mvm->temperature;
 410         bool throttle_enable = false;
 411         int i;
 412         u32 tx_backoff;
 413
 414         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
 415
 416         if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
 417                 iwl_mvm_enter_ctkill(mvm);
 418                 return;
 419         }
 420
 421         if (params->support_ct_kill &&
 422             temperature <= params->ct_kill_exit) {
 423                 iwl_mvm_exit_ctkill(mvm);
 424                 return;
 425         }
 426
 427         if (params->support_dynamic_smps) {
 428                 if (!tt->dynamic_smps &&
 429                     temperature >= params->dynamic_smps_entry) {
 430                         IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
 431                         tt->dynamic_smps = true;
 432                         ieee80211_iterate_active_interfaces_atomic(
 433                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 434                                         iwl_mvm_tt_smps_iterator, mvm);
 435                         throttle_enable = true;
 436                 } else if (tt->dynamic_smps &&
 437                            temperature <= params->dynamic_smps_exit) {
 438                         IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
 439                         tt->dynamic_smps = false;
 440                         ieee80211_iterate_active_interfaces_atomic(
 441                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 442                                         iwl_mvm_tt_smps_iterator, mvm);
 443                 }
 444         }
 445
 446         if (params->support_tx_protection) {
 447                 if (temperature >= params->tx_protection_entry) {
 448                         iwl_mvm_tt_tx_protection(mvm, true);
 449                         throttle_enable = true;
 450                 } else if (temperature <= params->tx_protection_exit) {
 451                         iwl_mvm_tt_tx_protection(mvm, false);
 452                 }
 453         }
 454
 455         if (params->support_tx_backoff) {
 456                 tx_backoff = tt->min_backoff;
 457                 for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
 458                         if (temperature < params->tx_backoff[i].temperature)
 459                                 break;
 460                         tx_backoff = max(tt->min_backoff,
 461                                          params->tx_backoff[i].backoff);
 462                 }
 463                 if (tx_backoff != tt->min_backoff)
 464                         throttle_enable = true;
 465                 if (tt->tx_backoff != tx_backoff)
 466                         iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
 467         }
 468
 469         if (!tt->throttle && throttle_enable) {
 470                 IWL_WARN(mvm,
 471                          "Due to high temperature thermal throttling initiated\n");
 472                 tt->throttle = true;
 473         } else if (tt->throttle && !tt->dynamic_smps &&
 474                    tt->tx_backoff == tt->min_backoff &&
 475                    temperature <= params->tx_protection_exit) {
 476                 IWL_WARN(mvm,
 477                          "Temperature is back to normal thermal throttling stopped\n");
 478                 tt->throttle = false;
 479         }
 480 }
 481
 482 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
 483         .ct_kill_entry = 118,
 484         .ct_kill_exit = 96,
 485         .ct_kill_duration = 5,
 486         .dynamic_smps_entry = 114,
 487         .dynamic_smps_exit = 110,
 488         .tx_protection_entry = 114,
 489         .tx_protection_exit = 108,
 490         .tx_backoff = {
 491                 {.temperature = 112, .backoff = 200},
 492                 {.temperature = 113, .backoff = 600},
 493                 {.temperature = 114, .backoff = 1200},
 494                 {.temperature = 115, .backoff = 2000},
 495                 {.temperature = 116, .backoff = 4000},
 496                 {.temperature = 117, .backoff = 10000},
 497         },
 498         .support_ct_kill = true,
 499         .support_dynamic_smps = true,
 500         .support_tx_protection = true,
 501         .support_tx_backoff = true,
 502 };
 503
 504 /* budget in mWatt */
 505 static const u32 iwl_mvm_cdev_budgets[] = {
 506         2000,   /* cooling state 0 */
 507         1800,   /* cooling state 1 */
 508         1600,   /* cooling state 2 */
 509         1400,   /* cooling state 3 */
 510         1200,   /* cooling state 4 */
 511         1000,   /* cooling state 5 */
 512         900,    /* cooling state 6 */
 513         800,    /* cooling state 7 */
 514         700,    /* cooling state 8 */
 515         650,    /* cooling state 9 */
 516         600,    /* cooling state 10 */
 517         550,    /* cooling state 11 */
 518         500,    /* cooling state 12 */
 519         450,    /* cooling state 13 */
 520         400,    /* cooling state 14 */
 521         350,    /* cooling state 15 */
 522         300,    /* cooling state 16 */
 523         250,    /* cooling state 17 */
 524         200,    /* cooling state 18 */
 525         150,    /* cooling state 19 */
 526 };
 527
 528 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
 529 {
 530         struct iwl_mvm_ctdp_cmd cmd = {
 531                 .operation = cpu_to_le32(op),
 532                 .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
 533                 .window_size = 0,
 534         };
 535         int ret;
 536         u32 status;
 537
 538         lockdep_assert_held(&mvm->mutex);
 539
 540         ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
 541                                                        CTDP_CONFIG_CMD),
 542                                           sizeof(cmd), &cmd, &status);
 543
 544         if (ret) {
 545                 IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
 546                 return ret;
 547         }
 548
 549         switch (op) {
 550         case CTDP_CMD_OPERATION_START:
 551 #ifdef CONFIG_THERMAL
 552                 mvm->cooling_dev.cur_state = state;
 553 #endif /* CONFIG_THERMAL */
 554                 break;
 555         case CTDP_CMD_OPERATION_REPORT:
 556                 IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
 557                 /* when the function is called with CTDP_CMD_OPERATION_REPORT
 558                  * option the function should return the average budget value
 559                  * that is received from the FW.
 560                  * The budget can't be less or equal to 0, so it's possible
 561                  * to distinguish between error values and budgets.
 562                  */
 563                 return status;
 564         case CTDP_CMD_OPERATION_STOP:
 565                 IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
 566                 break;
 567         }
 568
 569         return 0;
 570 }
 571
 572 #ifdef CONFIG_THERMAL
 573 static int compare_temps(const void *a, const void *b)
 574 {
 575         return ((s16)le16_to_cpu(*(__le16 *)a) -
 576                 (s16)le16_to_cpu(*(__le16 *)b));
 577 }
 578
 579 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
 580 {
 581         struct temp_report_ths_cmd cmd = {0};
 582         int ret, i, j, idx = 0;
 583
 584         lockdep_assert_held(&mvm->mutex);
 585
 586         if (!mvm->tz_device.tzone)
 587                 return -EINVAL;
 588
 589         /* The driver holds array of temperature trips that are unsorted
 590          * and uncompressed, the FW should get it compressed and sorted
 591          */
 592
 593         /* compress temp_trips to cmd array, remove uninitialized values*/
 594         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 595                 if (mvm->tz_device.temp_trips[i] != S16_MIN) {
 596                         cmd.thresholds[idx++] =
 597                                 cpu_to_le16(mvm->tz_device.temp_trips[i]);
 598                 }
 599         }
 600         cmd.num_temps = cpu_to_le32(idx);
 601
 602         if (!idx)
 603                 goto send;
 604
 605         /*sort cmd array*/
 606         sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
 607
 608         /* we should save the indexes of trips because we sort
 609          * and compress the orginal array
 610          */
 611         for (i = 0; i < idx; i++) {
 612                 for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
 613                         if (le16_to_cpu(cmd.thresholds[i]) ==
 614                                 mvm->tz_device.temp_trips[j])
 615                                 mvm->tz_device.fw_trips_index[i] = j;
 616                 }
 617         }
 618
 619 send:
 620         ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
 621                                                 TEMP_REPORTING_THRESHOLDS_CMD),
 622                                    0, sizeof(cmd), &cmd);
 623         if (ret)
 624                 IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
 625                         ret);
 626
 627         return ret;
 628 }
 629
 630 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
 631                                   int *temperature)
 632 {
 633         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 634         int ret;
 635         int temp;
 636
 637         mutex_lock(&mvm->mutex);
 638
 639         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
 640                 ret = -EIO;
 641                 goto out;
 642         }
 643
 644         ret = iwl_mvm_get_temp(mvm, &temp);
 645         if (ret)
 646                 goto out;
 647
 648         *temperature = temp * 1000;
 649
 650 out:
 651         mutex_unlock(&mvm->mutex);
 652         return ret;
 653 }
 654
 655 static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
 656                                        int trip, int *temp)
 657 {
 658         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 659
 660         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 661                 return -EINVAL;
 662
 663         *temp = mvm->tz_device.temp_trips[trip] * 1000;
 664
 665         return 0;
 666 }
 667
 668 static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
 669                                        int trip, enum thermal_trip_type *type)
 670 {
 671         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 672                 return -EINVAL;
 673
 674         *type = THERMAL_TRIP_PASSIVE;
 675
 676         return 0;
 677 }
 678
 679 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
 680                                        int trip, int temp)
 681 {
 682         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 683         struct iwl_mvm_thermal_device *tzone;
 684         int i, ret;
 685         s16 temperature;
 686
 687         mutex_lock(&mvm->mutex);
 688
 689         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
 690                 ret = -EIO;
 691                 goto out;
 692         }
 693
 694         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
 695                 ret = -EINVAL;
 696                 goto out;
 697         }
 698
 699         if ((temp / 1000) > S16_MAX) {
 700                 ret = -EINVAL;
 701                 goto out;
 702         }
 703
 704         temperature = (s16)(temp / 1000);
 705         tzone = &mvm->tz_device;
 706
 707         if (!tzone) {
 708                 ret = -EIO;
 709                 goto out;
 710         }
 711
 712         /* no updates*/
 713         if (tzone->temp_trips[trip] == temperature) {
 714                 ret = 0;
 715                 goto out;
 716         }
 717
 718         /* already existing temperature */
 719         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 720                 if (tzone->temp_trips[i] == temperature) {
 721                         ret = -EINVAL;
 722                         goto out;
 723                 }
 724         }
 725
 726         tzone->temp_trips[trip] = temperature;
 727
 728         ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
 729 out:
 730         mutex_unlock(&mvm->mutex);
 731         return ret;
 732 }
 733
 734 static  struct thermal_zone_device_ops tzone_ops = {
 735         .get_temp = iwl_mvm_tzone_get_temp,
 736         .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
 737         .get_trip_type = iwl_mvm_tzone_get_trip_type,
 738         .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
 739 };
 740
 741 /* make all trips writable */
 742 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
 743
 744 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 745 {
 746         int i;
 747         char name[] = "iwlwifi";
 748
 749         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 750                 mvm->tz_device.tzone = NULL;
 751
 752                 return;
 753         }
 754
 755         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 756
 757         mvm->tz_device.tzone = thermal_zone_device_register(name,
 758                                                         IWL_MAX_DTS_TRIPS,
 759                                                         IWL_WRITABLE_TRIPS_MSK,
 760                                                         mvm, &tzone_ops,
 761                                                         NULL, 0, 0);
 762         if (IS_ERR(mvm->tz_device.tzone)) {
 763                 IWL_DEBUG_TEMP(mvm,
 764                                "Failed to register to thermal zone (err = %ld)\n",
 765                                PTR_ERR(mvm->tz_device.tzone));
 766                 mvm->tz_device.tzone = NULL;
 767                 return;
 768         }
 769
 770         /* 0 is a valid temperature,
 771          * so initialize the array with S16_MIN which invalid temperature
 772          */
 773         for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
 774                 mvm->tz_device.temp_trips[i] = S16_MIN;
 775 }
 776
 777 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
 778                                        unsigned long *state)
 779 {
 780         *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
 781
 782         return 0;
 783 }
 784
 785 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
 786                                        unsigned long *state)
 787 {
 788         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 789
 790         *state = mvm->cooling_dev.cur_state;
 791
 792         return 0;
 793 }
 794
 795 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 796                                        unsigned long new_state)
 797 {
 798         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 799         int ret;
 800
 801         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR))
 802                 return -EIO;
 803
 804         mutex_lock(&mvm->mutex);
 805
 806         if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
 807                 ret = -EINVAL;
 808                 goto unlock;
 809         }
 810
 811         ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
 812                                    new_state);
 813
 814 unlock:
 815         mutex_unlock(&mvm->mutex);
 816         return ret;
 817 }
 818
 819 static struct thermal_cooling_device_ops tcooling_ops = {
 820         .get_max_state = iwl_mvm_tcool_get_max_state,
 821         .get_cur_state = iwl_mvm_tcool_get_cur_state,
 822         .set_cur_state = iwl_mvm_tcool_set_cur_state,
 823 };
 824
 825 static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm)
 826 {
 827         char name[] = "iwlwifi";
 828
 829         if (!iwl_mvm_is_ctdp_supported(mvm))
 830                 return;
 831
 832         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 833
 834         mvm->cooling_dev.cdev =
 835                 thermal_cooling_device_register(name,
 836                                                 mvm,
 837                                                 &tcooling_ops);
 838
 839         if (IS_ERR(mvm->cooling_dev.cdev)) {
 840                 IWL_DEBUG_TEMP(mvm,
 841                                "Failed to register to cooling device (err = %ld)\n",
 842                                PTR_ERR(mvm->cooling_dev.cdev));
 843                 mvm->cooling_dev.cdev = NULL;
 844                 return;
 845         }
 846 }
 847
 848 static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
 849 {
 850         if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone)
 851                 return;
 852
 853         IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
 854         thermal_zone_device_unregister(mvm->tz_device.tzone);
 855         mvm->tz_device.tzone = NULL;
 856 }
 857
 858 static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm)
 859 {
 860         if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev)
 861                 return;
 862
 863         IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
 864         thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
 865         mvm->cooling_dev.cdev = NULL;
 866 }
 867 #endif /* CONFIG_THERMAL */
 868
 869 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
 870 {
 871         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 872
 873         IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
 874
 875         if (mvm->cfg->thermal_params)
 876                 tt->params = *mvm->cfg->thermal_params;
 877         else
 878                 tt->params = iwl_mvm_default_tt_params;
 879
 880         tt->throttle = false;
 881         tt->dynamic_smps = false;
 882         tt->min_backoff = min_backoff;
 883         INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
 884
 885 #ifdef CONFIG_THERMAL
 886         iwl_mvm_cooling_device_register(mvm);
 887         iwl_mvm_thermal_zone_register(mvm);
 888 #endif
 889 }
 890
 891 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
 892 {
 893         cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
 894         IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
 895
 896 #ifdef CONFIG_THERMAL
 897         iwl_mvm_cooling_device_unregister(mvm);
 898         iwl_mvm_thermal_zone_unregister(mvm);
 899 #endif
 900 }