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
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  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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  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
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  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
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  50  *  * Neither the name Intel Corporation nor the names of its
  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,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  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 iwl_mvm_sta *mvmsta;
 363         int i, err;
 364
 365         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
 366                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
 367                 if (!mvmsta)
 368                         continue;
 369
 370                 if (enable == mvmsta->tt_tx_protection)
 371                         continue;
 372                 err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
 373                 if (err) {
 374                         IWL_ERR(mvm, "Failed to %s Tx protection\n",
 375                                 enable ? "enable" : "disable");
 376                 } else {
 377                         IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
 378                                        enable ? "Enable" : "Disable");
 379                         mvmsta->tt_tx_protection = enable;
 380                 }
 381         }
 382 }
 383
 384 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
 385 {
 386         struct iwl_host_cmd cmd = {
 387                 .id = REPLY_THERMAL_MNG_BACKOFF,
 388                 .len = { sizeof(u32), },
 389                 .data = { &backoff, },
 390         };
 391
 392         backoff = max(backoff, mvm->thermal_throttle.min_backoff);
 393
 394         if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
 395                 IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
 396                                backoff);
 397                 mvm->thermal_throttle.tx_backoff = backoff;
 398         } else {
 399                 IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
 400         }
 401 }
 402
 403 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
 404 {
 405         struct iwl_tt_params *params = &mvm->thermal_throttle.params;
 406         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 407         s32 temperature = mvm->temperature;
 408         bool throttle_enable = false;
 409         int i;
 410         u32 tx_backoff;
 411
 412         IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
 413
 414         if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
 415                 iwl_mvm_enter_ctkill(mvm);
 416                 return;
 417         }
 418
 419         if (params->support_ct_kill &&
 420             temperature <= params->ct_kill_exit) {
 421                 iwl_mvm_exit_ctkill(mvm);
 422                 return;
 423         }
 424
 425         if (params->support_dynamic_smps) {
 426                 if (!tt->dynamic_smps &&
 427                     temperature >= params->dynamic_smps_entry) {
 428                         IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
 429                         tt->dynamic_smps = true;
 430                         ieee80211_iterate_active_interfaces_atomic(
 431                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 432                                         iwl_mvm_tt_smps_iterator, mvm);
 433                         throttle_enable = true;
 434                 } else if (tt->dynamic_smps &&
 435                            temperature <= params->dynamic_smps_exit) {
 436                         IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
 437                         tt->dynamic_smps = false;
 438                         ieee80211_iterate_active_interfaces_atomic(
 439                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 440                                         iwl_mvm_tt_smps_iterator, mvm);
 441                 }
 442         }
 443
 444         if (params->support_tx_protection) {
 445                 if (temperature >= params->tx_protection_entry) {
 446                         iwl_mvm_tt_tx_protection(mvm, true);
 447                         throttle_enable = true;
 448                 } else if (temperature <= params->tx_protection_exit) {
 449                         iwl_mvm_tt_tx_protection(mvm, false);
 450                 }
 451         }
 452
 453         if (params->support_tx_backoff) {
 454                 tx_backoff = tt->min_backoff;
 455                 for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
 456                         if (temperature < params->tx_backoff[i].temperature)
 457                                 break;
 458                         tx_backoff = max(tt->min_backoff,
 459                                          params->tx_backoff[i].backoff);
 460                 }
 461                 if (tx_backoff != tt->min_backoff)
 462                         throttle_enable = true;
 463                 if (tt->tx_backoff != tx_backoff)
 464                         iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
 465         }
 466
 467         if (!tt->throttle && throttle_enable) {
 468                 IWL_WARN(mvm,
 469                          "Due to high temperature thermal throttling initiated\n");
 470                 tt->throttle = true;
 471         } else if (tt->throttle && !tt->dynamic_smps &&
 472                    tt->tx_backoff == tt->min_backoff &&
 473                    temperature <= params->tx_protection_exit) {
 474                 IWL_WARN(mvm,
 475                          "Temperature is back to normal thermal throttling stopped\n");
 476                 tt->throttle = false;
 477         }
 478 }
 479
 480 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
 481         .ct_kill_entry = 118,
 482         .ct_kill_exit = 96,
 483         .ct_kill_duration = 5,
 484         .dynamic_smps_entry = 114,
 485         .dynamic_smps_exit = 110,
 486         .tx_protection_entry = 114,
 487         .tx_protection_exit = 108,
 488         .tx_backoff = {
 489                 {.temperature = 112, .backoff = 200},
 490                 {.temperature = 113, .backoff = 600},
 491                 {.temperature = 114, .backoff = 1200},
 492                 {.temperature = 115, .backoff = 2000},
 493                 {.temperature = 116, .backoff = 4000},
 494                 {.temperature = 117, .backoff = 10000},
 495         },
 496         .support_ct_kill = true,
 497         .support_dynamic_smps = true,
 498         .support_tx_protection = true,
 499         .support_tx_backoff = true,
 500 };
 501
 502 /* budget in mWatt */
 503 static const u32 iwl_mvm_cdev_budgets[] = {
 504         2000,   /* cooling state 0 */
 505         1800,   /* cooling state 1 */
 506         1600,   /* cooling state 2 */
 507         1400,   /* cooling state 3 */
 508         1200,   /* cooling state 4 */
 509         1000,   /* cooling state 5 */
 510         900,    /* cooling state 6 */
 511         800,    /* cooling state 7 */
 512         700,    /* cooling state 8 */
 513         650,    /* cooling state 9 */
 514         600,    /* cooling state 10 */
 515         550,    /* cooling state 11 */
 516         500,    /* cooling state 12 */
 517         450,    /* cooling state 13 */
 518         400,    /* cooling state 14 */
 519         350,    /* cooling state 15 */
 520         300,    /* cooling state 16 */
 521         250,    /* cooling state 17 */
 522         200,    /* cooling state 18 */
 523         150,    /* cooling state 19 */
 524 };
 525
 526 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
 527 {
 528         struct iwl_mvm_ctdp_cmd cmd = {
 529                 .operation = cpu_to_le32(op),
 530                 .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
 531                 .window_size = 0,
 532         };
 533         int ret;
 534         u32 status;
 535
 536         lockdep_assert_held(&mvm->mutex);
 537
 538         ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
 539                                                        CTDP_CONFIG_CMD),
 540                                           sizeof(cmd), &cmd, &status);
 541
 542         if (ret) {
 543                 IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
 544                 return ret;
 545         }
 546
 547         switch (op) {
 548         case CTDP_CMD_OPERATION_START:
 549 #ifdef CONFIG_THERMAL
 550                 mvm->cooling_dev.cur_state = state;
 551 #endif /* CONFIG_THERMAL */
 552                 break;
 553         case CTDP_CMD_OPERATION_REPORT:
 554                 IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
 555                 /* when the function is called with CTDP_CMD_OPERATION_REPORT
 556                  * option the function should return the average budget value
 557                  * that is received from the FW.
 558                  * The budget can't be less or equal to 0, so it's possible
 559                  * to distinguish between error values and budgets.
 560                  */
 561                 return status;
 562         case CTDP_CMD_OPERATION_STOP:
 563                 IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
 564                 break;
 565         }
 566
 567         return 0;
 568 }
 569
 570 #ifdef CONFIG_THERMAL
 571 static int compare_temps(const void *a, const void *b)
 572 {
 573         return ((s16)le16_to_cpu(*(__le16 *)a) -
 574                 (s16)le16_to_cpu(*(__le16 *)b));
 575 }
 576
 577 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
 578 {
 579         struct temp_report_ths_cmd cmd = {0};
 580         int ret, i, j, idx = 0;
 581
 582         lockdep_assert_held(&mvm->mutex);
 583
 584         if (!mvm->tz_device.tzone)
 585                 return -EINVAL;
 586
 587         /* The driver holds array of temperature trips that are unsorted
 588          * and uncompressed, the FW should get it compressed and sorted
 589          */
 590
 591         /* compress temp_trips to cmd array, remove uninitialized values*/
 592         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 593                 if (mvm->tz_device.temp_trips[i] != S16_MIN) {
 594                         cmd.thresholds[idx++] =
 595                                 cpu_to_le16(mvm->tz_device.temp_trips[i]);
 596                 }
 597         }
 598         cmd.num_temps = cpu_to_le32(idx);
 599
 600         if (!idx)
 601                 goto send;
 602
 603         /*sort cmd array*/
 604         sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
 605
 606         /* we should save the indexes of trips because we sort
 607          * and compress the orginal array
 608          */
 609         for (i = 0; i < idx; i++) {
 610                 for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
 611                         if (le16_to_cpu(cmd.thresholds[i]) ==
 612                                 mvm->tz_device.temp_trips[j])
 613                                 mvm->tz_device.fw_trips_index[i] = j;
 614                 }
 615         }
 616
 617 send:
 618         ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
 619                                                 TEMP_REPORTING_THRESHOLDS_CMD),
 620                                    0, sizeof(cmd), &cmd);
 621         if (ret)
 622                 IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
 623                         ret);
 624
 625         return ret;
 626 }
 627
 628 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
 629                                   int *temperature)
 630 {
 631         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 632         int ret;
 633         int temp;
 634
 635         mutex_lock(&mvm->mutex);
 636
 637         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
 638                 ret = -EIO;
 639                 goto out;
 640         }
 641
 642         ret = iwl_mvm_get_temp(mvm, &temp);
 643         if (ret)
 644                 goto out;
 645
 646         *temperature = temp * 1000;
 647
 648 out:
 649         mutex_unlock(&mvm->mutex);
 650         return ret;
 651 }
 652
 653 static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
 654                                        int trip, int *temp)
 655 {
 656         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 657
 658         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 659                 return -EINVAL;
 660
 661         *temp = mvm->tz_device.temp_trips[trip] * 1000;
 662
 663         return 0;
 664 }
 665
 666 static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
 667                                        int trip, enum thermal_trip_type *type)
 668 {
 669         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
 670                 return -EINVAL;
 671
 672         *type = THERMAL_TRIP_PASSIVE;
 673
 674         return 0;
 675 }
 676
 677 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
 678                                        int trip, int temp)
 679 {
 680         struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
 681         struct iwl_mvm_thermal_device *tzone;
 682         int i, ret;
 683         s16 temperature;
 684
 685         mutex_lock(&mvm->mutex);
 686
 687         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) {
 688                 ret = -EIO;
 689                 goto out;
 690         }
 691
 692         if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
 693                 ret = -EINVAL;
 694                 goto out;
 695         }
 696
 697         if ((temp / 1000) > S16_MAX) {
 698                 ret = -EINVAL;
 699                 goto out;
 700         }
 701
 702         temperature = (s16)(temp / 1000);
 703         tzone = &mvm->tz_device;
 704
 705         if (!tzone) {
 706                 ret = -EIO;
 707                 goto out;
 708         }
 709
 710         /* no updates*/
 711         if (tzone->temp_trips[trip] == temperature) {
 712                 ret = 0;
 713                 goto out;
 714         }
 715
 716         /* already existing temperature */
 717         for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
 718                 if (tzone->temp_trips[i] == temperature) {
 719                         ret = -EINVAL;
 720                         goto out;
 721                 }
 722         }
 723
 724         tzone->temp_trips[trip] = temperature;
 725
 726         ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
 727 out:
 728         mutex_unlock(&mvm->mutex);
 729         return ret;
 730 }
 731
 732 static  struct thermal_zone_device_ops tzone_ops = {
 733         .get_temp = iwl_mvm_tzone_get_temp,
 734         .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
 735         .get_trip_type = iwl_mvm_tzone_get_trip_type,
 736         .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
 737 };
 738
 739 /* make all trips writable */
 740 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
 741
 742 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
 743 {
 744         int i;
 745         char name[] = "iwlwifi";
 746
 747         if (!iwl_mvm_is_tt_in_fw(mvm)) {
 748                 mvm->tz_device.tzone = NULL;
 749
 750                 return;
 751         }
 752
 753         BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
 754
 755         mvm->tz_device.tzone = thermal_zone_device_register(name,
 756                                                         IWL_MAX_DTS_TRIPS,
 757                                                         IWL_WRITABLE_TRIPS_MSK,
 758                                                         mvm, &tzone_ops,
 759                                                         NULL, 0, 0);
 760         if (IS_ERR(mvm->tz_device.tzone)) {
 761                 IWL_DEBUG_TEMP(mvm,
 762                                "Failed to register to thermal zone (err = %ld)\n",
 763                                PTR_ERR(mvm->tz_device.tzone));
 764                 mvm->tz_device.tzone = NULL;
 765                 return;
 766         }
 767
 768         /* 0 is a valid temperature,
 769          * so initialize the array with S16_MIN which invalid temperature
 770          */
 771         for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
 772                 mvm->tz_device.temp_trips[i] = S16_MIN;
 773 }
 774
 775 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
 776                                        unsigned long *state)
 777 {
 778         *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
 779
 780         return 0;
 781 }
 782
 783 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
 784                                        unsigned long *state)
 785 {
 786         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 787
 788         *state = mvm->cooling_dev.cur_state;
 789
 790         return 0;
 791 }
 792
 793 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
 794                                        unsigned long new_state)
 795 {
 796         struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
 797         int ret;
 798
 799         if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR))
 800                 return -EIO;
 801
 802         mutex_lock(&mvm->mutex);
 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 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         thermal_zone_device_unregister(mvm->tz_device.tzone);
 853         mvm->tz_device.tzone = NULL;
 854 }
 855
 856 static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm)
 857 {
 858         if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev)
 859                 return;
 860
 861         IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
 862         thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
 863         mvm->cooling_dev.cdev = NULL;
 864 }
 865 #endif /* CONFIG_THERMAL */
 866
 867 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
 868 {
 869         struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
 870
 871         IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
 872
 873         if (mvm->cfg->thermal_params)
 874                 tt->params = *mvm->cfg->thermal_params;
 875         else
 876                 tt->params = iwl_mvm_default_tt_params;
 877
 878         tt->throttle = false;
 879         tt->dynamic_smps = false;
 880         tt->min_backoff = min_backoff;
 881         INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
 882
 883 #ifdef CONFIG_THERMAL
 884         iwl_mvm_cooling_device_register(mvm);
 885         iwl_mvm_thermal_zone_register(mvm);
 886 #endif
 887 }
 888
 889 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
 890 {
 891         cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
 892         IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
 893
 894 #ifdef CONFIG_THERMAL
 895         iwl_mvm_cooling_device_unregister(mvm);
 896         iwl_mvm_thermal_zone_unregister(mvm);
 897 #endif
 898 }