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. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 44 * * Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * * Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in 48 * the documentation and/or other materials provided with the 49 * distribution. 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 } 899