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
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  30  *  Intel Linux Wireless <linuxwifi@intel.com>
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  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
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  41  * modification, are permitted provided that the following conditions
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  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,
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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 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         cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE,
 245                            PHY_OPS_GROUP, 0);
 246
 247         if (!fw_has_capa(&mvm->fw->ucode_capa,
 248                          IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE))
 249                 return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd);
 250
 251         return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd);
 252 }
 253
 254 int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
 255 {
 256         struct iwl_notification_wait wait_temp_notif;
 257         static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
 258                                             DTS_MEASUREMENT_NOTIF_WIDE) };
 259         int ret;
 260
 261         lockdep_assert_held(&mvm->mutex);
 262
 263         iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
 264                                    temp_notif, ARRAY_SIZE(temp_notif),
 265                                    iwl_mvm_temp_notif_wait, temp);
 266
 267         ret = iwl_mvm_get_temp_cmd(mvm);
 268         if (ret) {
 269                 IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret);
 270                 iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
 271                 return ret;
 272         }
 273
 274         ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
 275                                     IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
 276         if (ret)
 277                 IWL_ERR(mvm, "Getting the temperature timed out\n");
 278
 279         return ret;
 280 }
 281
 282 static void check_exit_ctkill(struct work_struct *work)
 283 {
 284         struct iwl_mvm_tt_mgmt *tt;
 285         struct iwl_mvm *mvm;
 286         u32 duration;
 287         s32 temp;
 288         int ret;
 289
 290         tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
 291         mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
 292
 293         if (iwl_mvm_is_tt_in_fw(mvm)) {
 294                 iwl_mvm_exit_ctkill(mvm);
 295
 296                 return;
 297         }
 298
 299         duration = tt->params.ct_kill_duration;
 300
 301         mutex_lock(&mvm->mutex);
 302
 303         if (__iwl_mvm_mac_start(mvm))
 304                 goto reschedule;
 305
 306         /* make sure the device is available for direct read/writes */
 307         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) {
 308                 __iwl_mvm_mac_stop(mvm);
 309                 goto reschedule;
 310         }
 311
 312         ret = iwl_mvm_get_temp(mvm, &temp);
 313
 314         iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL);
 315
 316         __iwl_mvm_mac_stop(mvm);
 317
 318         if (ret)
 319                 goto reschedule;
 320
 321         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
 322
 323         if (temp <= tt->params.ct_kill_exit) {
 324                 mutex_unlock(&mvm->mutex);
 325                 iwl_mvm_exit_ctkill(mvm);
 326                 return;
 327         }
 328
 329 reschedule:
 330         mutex_unlock(&mvm->mutex);
 331         schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
 332                               round_jiffies(duration * HZ));
 333 }
 334
 335 static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
 336                                      struct ieee80211_vif *vif)
 337 {
 338         struct iwl_mvm *mvm = _data;
 339         enum ieee80211_smps_mode smps_mode;
 340
 341         lockdep_assert_held(&mvm->mutex);
 342
 343         if (mvm->thermal_throttle.dynamic_smps)
 344                 smps_mode = IEEE80211_SMPS_DYNAMIC;
 345         else
 346                 smps_mode = IEEE80211_SMPS_AUTOMATIC;
 347
 348         if (vif->type != NL80211_IFTYPE_STATION)
 349                 return;
 350
 351         iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
 352 }
 353
 354 static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
 355 {
 356         struct iwl_mvm_sta *mvmsta;
 357         int i, err;
 358
 359         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
 360                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
 361                 if (!mvmsta)
 362                         continue;
 363
 364                 if (enable == mvmsta->tt_tx_protection)
 365                         continue;
 366                 err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
 367                 if (err) {
 368                         IWL_ERR(mvm, "Failed to %s Tx protection\n",
 369                                 enable ? "enable" : "disable");
 370                 } else {
 371                         IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
 372                                        enable ? "Enable" : "Disable");
 373                         mvmsta->tt_tx_protection = enable;
 374                 }
 375         }
 376 }
 377
 378 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
 379 {
 380         struct iwl_host_cmd cmd = {
 381                 .id = REPLY_THERMAL_MNG_BACKOFF,
 382                 .len = { sizeof(u32), },
 383                 .data = { &backoff, },
 384         };
 385
 386         backoff = max(backoff, mvm->thermal_throttle.min_backoff);
 387
 388         if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
 389                 IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
 390                                backoff);
 391                 mvm->thermal_throttle.tx_backoff = backoff;
 392         } else {
 393                 IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
 394         }
 395 }
 396
 397 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
 398 {
 399         struct iwl_tt_params *params = &mvm->thermal_throttle.params;
 400         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 401         s32 temperature = mvm->temperature;
 402         bool throttle_enable = false;
 403         int i;
 404         u32 tx_backoff;
 405
 406         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
 407
 408         if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
 409                 iwl_mvm_enter_ctkill(mvm);
 410                 return;
 411         }
 412
 413         if (params->support_ct_kill &&
 414             temperature <= params->ct_kill_exit) {
 415                 iwl_mvm_exit_ctkill(mvm);
 416                 return;
 417         }
 418
 419         if (params->support_dynamic_smps) {
 420                 if (!tt->dynamic_smps &&
 421                     temperature >= params->dynamic_smps_entry) {
 422                         IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
 423                         tt->dynamic_smps = true;
 424                         ieee80211_iterate_active_interfaces_atomic(
 425                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 426                                         iwl_mvm_tt_smps_iterator, mvm);
 427                         throttle_enable = true;
 428                 } else if (tt->dynamic_smps &&
 429                            temperature <= params->dynamic_smps_exit) {
 430                         IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
 431                         tt->dynamic_smps = false;
 432                         ieee80211_iterate_active_interfaces_atomic(
 433                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 434                                         iwl_mvm_tt_smps_iterator, mvm);
 435                 }
 436         }
 437
 438         if (params->support_tx_protection) {
 439                 if (temperature >= params->tx_protection_entry) {
 440                         iwl_mvm_tt_tx_protection(mvm, true);
 441                         throttle_enable = true;
 442                 } else if (temperature <= params->tx_protection_exit) {
 443                         iwl_mvm_tt_tx_protection(mvm, false);
 444                 }
 445         }
 446
 447         if (params->support_tx_backoff) {
 448                 tx_backoff = tt->min_backoff;
 449                 for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
 450                         if (temperature < params->tx_backoff[i].temperature)
 451                                 break;
 452                         tx_backoff = max(tt->min_backoff,
 453                                          params->tx_backoff[i].backoff);
 454                 }
 455                 if (tx_backoff != tt->min_backoff)
 456                         throttle_enable = true;
 457                 if (tt->tx_backoff != tx_backoff)
 458                         iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
 459         }
 460
 461         if (!tt->throttle && throttle_enable) {
 462                 IWL_WARN(mvm,
 463                          "Due to high temperature thermal throttling initiated\n");
 464                 tt->throttle = true;
 465         } else if (tt->throttle && !tt->dynamic_smps &&
 466                    tt->tx_backoff == tt->min_backoff &&
 467                    temperature <= params->tx_protection_exit) {
 468                 IWL_WARN(mvm,
 469                          "Temperature is back to normal thermal throttling stopped\n");
 470                 tt->throttle = false;
 471         }
 472 }
 473
 474 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
 475         .ct_kill_entry = 118,
 476         .ct_kill_exit = 96,
 477         .ct_kill_duration = 5,
 478         .dynamic_smps_entry = 114,
 479         .dynamic_smps_exit = 110,
 480         .tx_protection_entry = 114,
 481         .tx_protection_exit = 108,
 482         .tx_backoff = {
 483                 {.temperature = 112, .backoff = 200},
 484                 {.temperature = 113, .backoff = 600},
 485                 {.temperature = 114, .backoff = 1200},
 486                 {.temperature = 115, .backoff = 2000},
 487                 {.temperature = 116, .backoff = 4000},
 488                 {.temperature = 117, .backoff = 10000},
 489         },
 490         .support_ct_kill = true,
 491         .support_dynamic_smps = true,
 492         .support_tx_protection = true,
 493         .support_tx_backoff = true,
 494 };
 495
 496 /* budget in mWatt */
 497 static const u32 iwl_mvm_cdev_budgets[] = {
 498         2000,   /* cooling state 0 */
 499         1800,   /* cooling state 1 */
 500         1600,   /* cooling state 2 */
 501         1400,   /* cooling state 3 */
 502         1200,   /* cooling state 4 */
 503         1000,   /* cooling state 5 */
 504         900,    /* cooling state 6 */
 505         800,    /* cooling state 7 */
 506         700,    /* cooling state 8 */
 507         650,    /* cooling state 9 */
 508         600,    /* cooling state 10 */
 509         550,    /* cooling state 11 */
 510         500,    /* cooling state 12 */
 511         450,    /* cooling state 13 */
 512         400,    /* cooling state 14 */
 513         350,    /* cooling state 15 */
 514         300,    /* cooling state 16 */
 515         250,    /* cooling state 17 */
 516         200,    /* cooling state 18 */
 517         150,    /* cooling state 19 */
 518 };
 519
 520 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
 521 {
 522         struct iwl_mvm_ctdp_cmd cmd = {
 523                 .operation = cpu_to_le32(op),
 524                 .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
 525                 .window_size = 0,
 526         };
 527         int ret;
 528         u32 status;
 529
 530         lockdep_assert_held(&mvm->mutex);
 531
 532         status = 0;
 533         ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
 534                                                        CTDP_CONFIG_CMD),
 535                                           sizeof(cmd), &cmd, &status);
 536
 537         if (ret) {
 538                 IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
 539                 return ret;
 540         }
 541
 542         switch (op) {
 543         case CTDP_CMD_OPERATION_START:
 544 #ifdef CONFIG_THERMAL
 545                 mvm->cooling_dev.cur_state = state;
 546 #endif /* CONFIG_THERMAL */
 547                 break;
 548         case CTDP_CMD_OPERATION_REPORT:
 549                 IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
 550                 /* when the function is called with CTDP_CMD_OPERATION_REPORT
 551                  * option the function should return the average budget value
 552                  * that is received from the FW.
 553                  * The budget can't be less or equal to 0, so it's possible
 554                  * to distinguish between error values and budgets.
 555                  */
 556                 return status;
 557         case CTDP_CMD_OPERATION_STOP:
 558                 IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
 559                 break;
 560         }
 561
 562         return 0;
 563 }
 564
 565 #ifdef CONFIG_THERMAL
 566 static int compare_temps(const void *a, const void *b)
 567 {
 568         return ((s16)le16_to_cpu(*(__le16 *)a) -
 569                 (s16)le16_to_cpu(*(__le16 *)b));
 570 }
 571
 572 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
 573 {
 574         struct temp_report_ths_cmd cmd = {0};
 575         int ret, i, j, idx = 0;
 576
 577         lockdep_assert_held(&mvm->mutex);
 578
 579         if (!mvm->tz_device.tzone)
 580                 return -EINVAL;
 581
 582         /* The driver holds array of temperature trips that are unsorted
 583          * and uncompressed, the FW should get it compressed and sorted
 584          */
 585
 586         /* compress temp_trips to cmd array, remove uninitialized values*/
 587         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 588                 if (mvm->tz_device.temp_trips[i] != S16_MIN) {
 589                         cmd.thresholds[idx++] =
 590                                 cpu_to_le16(mvm->tz_device.temp_trips[i]);
 591                 }
 592         }
 593         cmd.num_temps = cpu_to_le32(idx);
 594
 595         if (!idx)
 596                 goto send;
 597
 598         /*sort cmd array*/
 599         sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
 600
 601         /* we should save the indexes of trips because we sort
 602          * and compress the orginal array
 603          */
 604         for (i = 0; i < idx; i++) {
 605                 for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
 606                         if (le16_to_cpu(cmd.thresholds[i]) ==
 607                                 mvm->tz_device.temp_trips[j])
 608                                 mvm->tz_device.fw_trips_index[i] = j;
 609                 }
 610         }
 611
 612 send:
 613         ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
 614                                                 TEMP_REPORTING_THRESHOLDS_CMD),
 615                                    0, sizeof(cmd), &cmd);
 616         if (ret)
 617                 IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
 618                         ret);
 619
 620         return ret;
 621 }
 622
 623 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
 624                                   int *temperature)
 625 {
 626         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 627         int ret;
 628         int temp;
 629
 630         mutex_lock(&mvm->mutex);
 631
 632         if (!iwl_mvm_firmware_running(mvm) ||
 633             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 634                 ret = -ENODATA;
 635                 goto out;
 636         }
 637
 638         ret = iwl_mvm_get_temp(mvm, &temp);
 639         if (ret)
 640                 goto out;
 641
 642         *temperature = temp * 1000;
 643
 644 out:
 645         mutex_unlock(&mvm->mutex);
 646         return ret;
 647 }
 648
 649 static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
 650                                        int trip, int *temp)
 651 {
 652         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 653
 654         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 655                 return -EINVAL;
 656
 657         *temp = mvm->tz_device.temp_trips[trip] * 1000;
 658
 659         return 0;
 660 }
 661
 662 static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
 663                                        int trip, enum thermal_trip_type *type)
 664 {
 665         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 666                 return -EINVAL;
 667
 668         *type = THERMAL_TRIP_PASSIVE;
 669
 670         return 0;
 671 }
 672
 673 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
 674                                        int trip, int temp)
 675 {
 676         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 677         struct iwl_mvm_thermal_device *tzone;
 678         int i, ret;
 679         s16 temperature;
 680
 681         mutex_lock(&mvm->mutex);
 682
 683         if (!iwl_mvm_firmware_running(mvm) ||
 684             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 685                 ret = -EIO;
 686                 goto out;
 687         }
 688
 689         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
 690                 ret = -EINVAL;
 691                 goto out;
 692         }
 693
 694         if ((temp / 1000) > S16_MAX) {
 695                 ret = -EINVAL;
 696                 goto out;
 697         }
 698
 699         temperature = (s16)(temp / 1000);
 700         tzone = &mvm->tz_device;
 701
 702         if (!tzone) {
 703                 ret = -EIO;
 704                 goto out;
 705         }
 706
 707         /* no updates*/
 708         if (tzone->temp_trips[trip] == temperature) {
 709                 ret = 0;
 710                 goto out;
 711         }
 712
 713         /* already existing temperature */
 714         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 715                 if (tzone->temp_trips[i] == temperature) {
 716                         ret = -EINVAL;
 717                         goto out;
 718                 }
 719         }
 720
 721         tzone->temp_trips[trip] = temperature;
 722
 723         ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
 724 out:
 725         mutex_unlock(&mvm->mutex);
 726         return ret;
 727 }
 728
 729 static  struct thermal_zone_device_ops tzone_ops = {
 730         .get_temp = iwl_mvm_tzone_get_temp,
 731         .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
 732         .get_trip_type = iwl_mvm_tzone_get_trip_type,
 733         .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
 734 };
 735
 736 /* make all trips writable */
 737 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
 738
 739 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 740 {
 741         int i;
 742         char name[] = "iwlwifi";
 743
 744         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 745                 mvm->tz_device.tzone = NULL;
 746
 747                 return;
 748         }
 749
 750         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 751
 752         mvm->tz_device.tzone = thermal_zone_device_register(name,
 753                                                         IWL_MAX_DTS_TRIPS,
 754                                                         IWL_WRITABLE_TRIPS_MSK,
 755                                                         mvm, &tzone_ops,
 756                                                         NULL, 0, 0);
 757         if (IS_ERR(mvm->tz_device.tzone)) {
 758                 IWL_DEBUG_TEMP(mvm,
 759                                "Failed to register to thermal zone (err = %ld)\n",
 760                                PTR_ERR(mvm->tz_device.tzone));
 761                 mvm->tz_device.tzone = NULL;
 762                 return;
 763         }
 764
 765         /* 0 is a valid temperature,
 766          * so initialize the array with S16_MIN which invalid temperature
 767          */
 768         for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
 769                 mvm->tz_device.temp_trips[i] = S16_MIN;
 770 }
 771
 772 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
 773                                        unsigned long *state)
 774 {
 775         *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
 776
 777         return 0;
 778 }
 779
 780 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
 781                                        unsigned long *state)
 782 {
 783         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 784
 785         *state = mvm->cooling_dev.cur_state;
 786
 787         return 0;
 788 }
 789
 790 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 791                                        unsigned long new_state)
 792 {
 793         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 794         int ret;
 795
 796         mutex_lock(&mvm->mutex);
 797
 798         if (!iwl_mvm_firmware_running(mvm) ||
 799             mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
 800                 ret = -EIO;
 801                 goto unlock;
 802         }
 803
 804         if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
 805                 ret = -EINVAL;
 806                 goto unlock;
 807         }
 808
 809         ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
 810                                    new_state);
 811
 812 unlock:
 813         mutex_unlock(&mvm->mutex);
 814         return ret;
 815 }
 816
 817 static const struct thermal_cooling_device_ops tcooling_ops = {
 818         .get_max_state = iwl_mvm_tcool_get_max_state,
 819         .get_cur_state = iwl_mvm_tcool_get_cur_state,
 820         .set_cur_state = iwl_mvm_tcool_set_cur_state,
 821 };
 822
 823 static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm)
 824 {
 825         char name[] = "iwlwifi";
 826
 827         if (!iwl_mvm_is_ctdp_supported(mvm))
 828                 return;
 829
 830         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 831
 832         mvm->cooling_dev.cdev =
 833                 thermal_cooling_device_register(name,
 834                                                 mvm,
 835                                                 &tcooling_ops);
 836
 837         if (IS_ERR(mvm->cooling_dev.cdev)) {
 838                 IWL_DEBUG_TEMP(mvm,
 839                                "Failed to register to cooling device (err = %ld)\n",
 840                                PTR_ERR(mvm->cooling_dev.cdev));
 841                 mvm->cooling_dev.cdev = NULL;
 842                 return;
 843         }
 844 }
 845
 846 static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
 847 {
 848         if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone)
 849                 return;
 850
 851         IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
 852         if (mvm->tz_device.tzone) {
 853                 thermal_zone_device_unregister(mvm->tz_device.tzone);
 854                 mvm->tz_device.tzone = NULL;
 855         }
 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         if (mvm->cooling_dev.cdev) {
 865                 thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
 866                 mvm->cooling_dev.cdev = NULL;
 867         }
 868 }
 869 #endif /* CONFIG_THERMAL */
 870
 871 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
 872 {
 873         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 874
 875         IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
 876
 877         if (mvm->cfg->thermal_params)
 878                 tt->params = *mvm->cfg->thermal_params;
 879         else
 880                 tt->params = iwl_mvm_default_tt_params;
 881
 882         tt->throttle = false;
 883         tt->dynamic_smps = false;
 884         tt->min_backoff = min_backoff;
 885         INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
 886
 887 #ifdef CONFIG_THERMAL
 888         iwl_mvm_cooling_device_register(mvm);
 889         iwl_mvm_thermal_zone_register(mvm);
 890 #endif
 891         mvm->init_status |= IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
 892 }
 893
 894 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
 895 {
 896         if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE))
 897                 return;
 898
 899         cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
 900         IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
 901
 902 #ifdef CONFIG_THERMAL
 903         iwl_mvm_cooling_device_unregister(mvm);
 904         iwl_mvm_thermal_zone_unregister(mvm);
 905 #endif
 906         mvm->init_status &= ~IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
 907 }