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0001 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
0002 /*
0003  * Copyright (C) 2012-2014, 2019-2021 Intel Corporation
0004  * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
0005  * Copyright (C) 2015-2016 Intel Deutschland GmbH
0006  */
0007 #include <linux/sort.h>
0008 
0009 #include "mvm.h"
0010 
0011 #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
0012 
0013 void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)
0014 {
0015     struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
0016     u32 duration = tt->params.ct_kill_duration;
0017 
0018     if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
0019         return;
0020 
0021     IWL_ERR(mvm, "Enter CT Kill\n");
0022     iwl_mvm_set_hw_ctkill_state(mvm, true);
0023 
0024     if (!iwl_mvm_is_tt_in_fw(mvm)) {
0025         tt->throttle = false;
0026         tt->dynamic_smps = false;
0027     }
0028 
0029     /* Don't schedule an exit work if we're in test mode, since
0030      * the temperature will not change unless we manually set it
0031      * again (or disable testing).
0032      */
0033     if (!mvm->temperature_test)
0034         schedule_delayed_work(&tt->ct_kill_exit,
0035                       round_jiffies_relative(duration * HZ));
0036 }
0037 
0038 static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm)
0039 {
0040     if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
0041         return;
0042 
0043     IWL_ERR(mvm, "Exit CT Kill\n");
0044     iwl_mvm_set_hw_ctkill_state(mvm, false);
0045 }
0046 
0047 static void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp)
0048 {
0049     /* ignore the notification if we are in test mode */
0050     if (mvm->temperature_test)
0051         return;
0052 
0053     if (mvm->temperature == temp)
0054         return;
0055 
0056     mvm->temperature = temp;
0057     iwl_mvm_tt_handler(mvm);
0058 }
0059 
0060 static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
0061                     struct iwl_rx_packet *pkt)
0062 {
0063     struct iwl_dts_measurement_notif_v1 *notif_v1;
0064     int len = iwl_rx_packet_payload_len(pkt);
0065     int temp;
0066 
0067     /* we can use notif_v1 only, because v2 only adds an additional
0068      * parameter, which is not used in this function.
0069     */
0070     if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
0071         IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
0072         return -EINVAL;
0073     }
0074 
0075     notif_v1 = (void *)pkt->data;
0076 
0077     temp = le32_to_cpu(notif_v1->temp);
0078 
0079     /* shouldn't be negative, but since it's s32, make sure it isn't */
0080     if (WARN_ON_ONCE(temp < 0))
0081         temp = 0;
0082 
0083     IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
0084 
0085     return temp;
0086 }
0087 
0088 static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait,
0089                     struct iwl_rx_packet *pkt, void *data)
0090 {
0091     struct iwl_mvm *mvm =
0092         container_of(notif_wait, struct iwl_mvm, notif_wait);
0093     int *temp = data;
0094     int ret;
0095 
0096     ret = iwl_mvm_temp_notif_parse(mvm, pkt);
0097     if (ret < 0)
0098         return true;
0099 
0100     *temp = ret;
0101 
0102     return true;
0103 }
0104 
0105 void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
0106 {
0107     struct iwl_rx_packet *pkt = rxb_addr(rxb);
0108     struct iwl_dts_measurement_notif_v2 *notif_v2;
0109     int len = iwl_rx_packet_payload_len(pkt);
0110     int temp;
0111     u32 ths_crossed;
0112 
0113     /* the notification is handled synchronously in ctkill, so skip here */
0114     if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
0115         return;
0116 
0117     temp = iwl_mvm_temp_notif_parse(mvm, pkt);
0118 
0119     if (!iwl_mvm_is_tt_in_fw(mvm)) {
0120         if (temp >= 0)
0121             iwl_mvm_tt_temp_changed(mvm, temp);
0122         return;
0123     }
0124 
0125     if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
0126         IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
0127         return;
0128     }
0129 
0130     notif_v2 = (void *)pkt->data;
0131     ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
0132 
0133     /* 0xFF in ths_crossed means the notification is not related
0134      * to a trip, so we can ignore it here.
0135      */
0136     if (ths_crossed == 0xFF)
0137         return;
0138 
0139     IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
0140                temp, ths_crossed);
0141 
0142 #ifdef CONFIG_THERMAL
0143     if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
0144         return;
0145 
0146     if (mvm->tz_device.tzone) {
0147         struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device;
0148 
0149         thermal_zone_device_update(tz_dev->tzone,
0150                        THERMAL_TRIP_VIOLATED);
0151     }
0152 #endif /* CONFIG_THERMAL */
0153 }
0154 
0155 void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
0156 {
0157     struct iwl_rx_packet *pkt = rxb_addr(rxb);
0158     struct ct_kill_notif *notif;
0159 
0160     notif = (struct ct_kill_notif *)pkt->data;
0161     IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
0162                notif->temperature);
0163     if (iwl_fw_lookup_notif_ver(mvm->fw, PHY_OPS_GROUP,
0164                     CT_KILL_NOTIFICATION, 0) > 1)
0165         IWL_DEBUG_TEMP(mvm,
0166                    "CT kill notification DTS bitmap = 0x%x, Scheme = %d\n",
0167                    notif->dts, notif->scheme);
0168 
0169     iwl_mvm_enter_ctkill(mvm);
0170 }
0171 
0172 /*
0173  * send the DTS_MEASUREMENT_TRIGGER command with or without waiting for a
0174  * response. If we get a response then the measurement is stored in 'temp'
0175  */
0176 static int iwl_mvm_send_temp_cmd(struct iwl_mvm *mvm, bool response, s32 *temp)
0177 {
0178     struct iwl_host_cmd cmd = {};
0179     struct iwl_dts_measurement_cmd dts_cmd = {
0180         .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
0181     };
0182     struct iwl_ext_dts_measurement_cmd ext_cmd = {
0183         .control_mode = cpu_to_le32(DTS_DIRECT_WITHOUT_MEASURE),
0184     };
0185     struct iwl_dts_measurement_resp *resp;
0186     void *cmd_ptr;
0187     int ret;
0188     u32 cmd_flags = 0;
0189     u16 len;
0190 
0191     /* Check which command format is used (regular/extended) */
0192     if (fw_has_capa(&mvm->fw->ucode_capa,
0193             IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) {
0194         len = sizeof(ext_cmd);
0195         cmd_ptr = &ext_cmd;
0196     } else {
0197         len = sizeof(dts_cmd);
0198         cmd_ptr = &dts_cmd;
0199     }
0200     /* The command version where we get a response is zero length */
0201     if (response) {
0202         cmd_flags = CMD_WANT_SKB;
0203         len = 0;
0204     }
0205 
0206     cmd.id =  WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE);
0207     cmd.len[0] = len;
0208     cmd.flags = cmd_flags;
0209     cmd.data[0] = cmd_ptr;
0210 
0211     IWL_DEBUG_TEMP(mvm,
0212                "Sending temperature measurement command - %s response\n",
0213                response ? "with" : "without");
0214     ret = iwl_mvm_send_cmd(mvm, &cmd);
0215 
0216     if (ret) {
0217         IWL_ERR(mvm,
0218             "Failed to send the temperature measurement command (err=%d)\n",
0219             ret);
0220         return ret;
0221     }
0222 
0223     if (response) {
0224         resp = (void *)cmd.resp_pkt->data;
0225         *temp = le32_to_cpu(resp->temp);
0226         IWL_DEBUG_TEMP(mvm,
0227                    "Got temperature measurement response: temp=%d\n",
0228                    *temp);
0229         iwl_free_resp(&cmd);
0230     }
0231 
0232     return ret;
0233 }
0234 
0235 int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
0236 {
0237     struct iwl_notification_wait wait_temp_notif;
0238     static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
0239                         DTS_MEASUREMENT_NOTIF_WIDE) };
0240     int ret;
0241     u8 cmd_ver;
0242 
0243     /*
0244      * If command version is 1 we send the command and immediately get
0245      * a response. For older versions we send the command and wait for a
0246      * notification (no command TLV for previous versions).
0247      */
0248     cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
0249                     WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
0250                     IWL_FW_CMD_VER_UNKNOWN);
0251     if (cmd_ver == 1)
0252         return iwl_mvm_send_temp_cmd(mvm, true, temp);
0253 
0254     lockdep_assert_held(&mvm->mutex);
0255 
0256     iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
0257                    temp_notif, ARRAY_SIZE(temp_notif),
0258                    iwl_mvm_temp_notif_wait, temp);
0259 
0260     ret = iwl_mvm_send_temp_cmd(mvm, false, temp);
0261     if (ret) {
0262         iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
0263         return ret;
0264     }
0265 
0266     ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
0267                     IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
0268     if (ret)
0269         IWL_WARN(mvm, "Getting the temperature timed out\n");
0270 
0271     return ret;
0272 }
0273 
0274 static void check_exit_ctkill(struct work_struct *work)
0275 {
0276     struct iwl_mvm_tt_mgmt *tt;
0277     struct iwl_mvm *mvm;
0278     u32 duration;
0279     s32 temp;
0280     int ret;
0281 
0282     tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
0283     mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
0284 
0285     if (iwl_mvm_is_tt_in_fw(mvm)) {
0286         iwl_mvm_exit_ctkill(mvm);
0287 
0288         return;
0289     }
0290 
0291     duration = tt->params.ct_kill_duration;
0292 
0293     flush_work(&mvm->roc_done_wk);
0294 
0295     mutex_lock(&mvm->mutex);
0296 
0297     if (__iwl_mvm_mac_start(mvm))
0298         goto reschedule;
0299 
0300     ret = iwl_mvm_get_temp(mvm, &temp);
0301 
0302     __iwl_mvm_mac_stop(mvm);
0303 
0304     if (ret)
0305         goto reschedule;
0306 
0307     IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
0308 
0309     if (temp <= tt->params.ct_kill_exit) {
0310         mutex_unlock(&mvm->mutex);
0311         iwl_mvm_exit_ctkill(mvm);
0312         return;
0313     }
0314 
0315 reschedule:
0316     mutex_unlock(&mvm->mutex);
0317     schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
0318                   round_jiffies(duration * HZ));
0319 }
0320 
0321 static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
0322                      struct ieee80211_vif *vif)
0323 {
0324     struct iwl_mvm *mvm = _data;
0325     enum ieee80211_smps_mode smps_mode;
0326 
0327     lockdep_assert_held(&mvm->mutex);
0328 
0329     if (mvm->thermal_throttle.dynamic_smps)
0330         smps_mode = IEEE80211_SMPS_DYNAMIC;
0331     else
0332         smps_mode = IEEE80211_SMPS_AUTOMATIC;
0333 
0334     if (vif->type != NL80211_IFTYPE_STATION)
0335         return;
0336 
0337     iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
0338 }
0339 
0340 static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
0341 {
0342     struct iwl_mvm_sta *mvmsta;
0343     int i, err;
0344 
0345     for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
0346         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
0347         if (!mvmsta)
0348             continue;
0349 
0350         if (enable == mvmsta->tt_tx_protection)
0351             continue;
0352         err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
0353         if (err) {
0354             IWL_ERR(mvm, "Failed to %s Tx protection\n",
0355                 enable ? "enable" : "disable");
0356         } else {
0357             IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
0358                        enable ? "Enable" : "Disable");
0359             mvmsta->tt_tx_protection = enable;
0360         }
0361     }
0362 }
0363 
0364 void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
0365 {
0366     struct iwl_host_cmd cmd = {
0367         .id = REPLY_THERMAL_MNG_BACKOFF,
0368         .len = { sizeof(u32), },
0369         .data = { &backoff, },
0370     };
0371 
0372     backoff = max(backoff, mvm->thermal_throttle.min_backoff);
0373 
0374     if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
0375         IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
0376                    backoff);
0377         mvm->thermal_throttle.tx_backoff = backoff;
0378     } else {
0379         IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
0380     }
0381 }
0382 
0383 void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
0384 {
0385     struct iwl_tt_params *params = &mvm->thermal_throttle.params;
0386     struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
0387     s32 temperature = mvm->temperature;
0388     bool throttle_enable = false;
0389     int i;
0390     u32 tx_backoff;
0391 
0392     IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
0393 
0394     if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
0395         iwl_mvm_enter_ctkill(mvm);
0396         return;
0397     }
0398 
0399     if (params->support_ct_kill &&
0400         temperature <= params->ct_kill_exit) {
0401         iwl_mvm_exit_ctkill(mvm);
0402         return;
0403     }
0404 
0405     if (params->support_dynamic_smps) {
0406         if (!tt->dynamic_smps &&
0407             temperature >= params->dynamic_smps_entry) {
0408             IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
0409             tt->dynamic_smps = true;
0410             ieee80211_iterate_active_interfaces_atomic(
0411                     mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
0412                     iwl_mvm_tt_smps_iterator, mvm);
0413             throttle_enable = true;
0414         } else if (tt->dynamic_smps &&
0415                temperature <= params->dynamic_smps_exit) {
0416             IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
0417             tt->dynamic_smps = false;
0418             ieee80211_iterate_active_interfaces_atomic(
0419                     mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
0420                     iwl_mvm_tt_smps_iterator, mvm);
0421         }
0422     }
0423 
0424     if (params->support_tx_protection) {
0425         if (temperature >= params->tx_protection_entry) {
0426             iwl_mvm_tt_tx_protection(mvm, true);
0427             throttle_enable = true;
0428         } else if (temperature <= params->tx_protection_exit) {
0429             iwl_mvm_tt_tx_protection(mvm, false);
0430         }
0431     }
0432 
0433     if (params->support_tx_backoff) {
0434         tx_backoff = tt->min_backoff;
0435         for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
0436             if (temperature < params->tx_backoff[i].temperature)
0437                 break;
0438             tx_backoff = max(tt->min_backoff,
0439                      params->tx_backoff[i].backoff);
0440         }
0441         if (tx_backoff != tt->min_backoff)
0442             throttle_enable = true;
0443         if (tt->tx_backoff != tx_backoff)
0444             iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
0445     }
0446 
0447     if (!tt->throttle && throttle_enable) {
0448         IWL_WARN(mvm,
0449              "Due to high temperature thermal throttling initiated\n");
0450         tt->throttle = true;
0451     } else if (tt->throttle && !tt->dynamic_smps &&
0452            tt->tx_backoff == tt->min_backoff &&
0453            temperature <= params->tx_protection_exit) {
0454         IWL_WARN(mvm,
0455              "Temperature is back to normal thermal throttling stopped\n");
0456         tt->throttle = false;
0457     }
0458 }
0459 
0460 static const struct iwl_tt_params iwl_mvm_default_tt_params = {
0461     .ct_kill_entry = 118,
0462     .ct_kill_exit = 96,
0463     .ct_kill_duration = 5,
0464     .dynamic_smps_entry = 114,
0465     .dynamic_smps_exit = 110,
0466     .tx_protection_entry = 114,
0467     .tx_protection_exit = 108,
0468     .tx_backoff = {
0469         {.temperature = 112, .backoff = 200},
0470         {.temperature = 113, .backoff = 600},
0471         {.temperature = 114, .backoff = 1200},
0472         {.temperature = 115, .backoff = 2000},
0473         {.temperature = 116, .backoff = 4000},
0474         {.temperature = 117, .backoff = 10000},
0475     },
0476     .support_ct_kill = true,
0477     .support_dynamic_smps = true,
0478     .support_tx_protection = true,
0479     .support_tx_backoff = true,
0480 };
0481 
0482 /* budget in mWatt */
0483 static const u32 iwl_mvm_cdev_budgets[] = {
0484     2400,   /* cooling state 0 */
0485     2000,   /* cooling state 1 */
0486     1800,   /* cooling state 2 */
0487     1600,   /* cooling state 3 */
0488     1400,   /* cooling state 4 */
0489     1200,   /* cooling state 5 */
0490     1000,   /* cooling state 6 */
0491     900,    /* cooling state 7 */
0492     800,    /* cooling state 8 */
0493     700,    /* cooling state 9 */
0494     650,    /* cooling state 10 */
0495     600,    /* cooling state 11 */
0496     550,    /* cooling state 12 */
0497     500,    /* cooling state 13 */
0498     450,    /* cooling state 14 */
0499     400,    /* cooling state 15 */
0500     350,    /* cooling state 16 */
0501     300,    /* cooling state 17 */
0502     250,    /* cooling state 18 */
0503     200,    /* cooling state 19 */
0504     150,    /* cooling state 20 */
0505 };
0506 
0507 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state)
0508 {
0509     struct iwl_mvm_ctdp_cmd cmd = {
0510         .operation = cpu_to_le32(op),
0511         .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]),
0512         .window_size = 0,
0513     };
0514     int ret;
0515     u32 status;
0516 
0517     lockdep_assert_held(&mvm->mutex);
0518 
0519     status = 0;
0520     ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP,
0521                                CTDP_CONFIG_CMD),
0522                       sizeof(cmd), &cmd, &status);
0523 
0524     if (ret) {
0525         IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret);
0526         return ret;
0527     }
0528 
0529     switch (op) {
0530     case CTDP_CMD_OPERATION_START:
0531 #ifdef CONFIG_THERMAL
0532         mvm->cooling_dev.cur_state = state;
0533 #endif /* CONFIG_THERMAL */
0534         break;
0535     case CTDP_CMD_OPERATION_REPORT:
0536         IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status);
0537         /* when the function is called with CTDP_CMD_OPERATION_REPORT
0538          * option the function should return the average budget value
0539          * that is received from the FW.
0540          * The budget can't be less or equal to 0, so it's possible
0541          * to distinguish between error values and budgets.
0542          */
0543         return status;
0544     case CTDP_CMD_OPERATION_STOP:
0545         IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n");
0546         break;
0547     }
0548 
0549     return 0;
0550 }
0551 
0552 #ifdef CONFIG_THERMAL
0553 static int compare_temps(const void *a, const void *b)
0554 {
0555     return ((s16)le16_to_cpu(*(__le16 *)a) -
0556         (s16)le16_to_cpu(*(__le16 *)b));
0557 }
0558 #endif
0559 
0560 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm)
0561 {
0562     struct temp_report_ths_cmd cmd = {0};
0563     int ret;
0564 #ifdef CONFIG_THERMAL
0565     int i, j, idx = 0;
0566 
0567     lockdep_assert_held(&mvm->mutex);
0568 
0569     if (!mvm->tz_device.tzone)
0570         goto send;
0571 
0572     /* The driver holds array of temperature trips that are unsorted
0573      * and uncompressed, the FW should get it compressed and sorted
0574      */
0575 
0576     /* compress temp_trips to cmd array, remove uninitialized values*/
0577     for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
0578         if (mvm->tz_device.temp_trips[i] != S16_MIN) {
0579             cmd.thresholds[idx++] =
0580                 cpu_to_le16(mvm->tz_device.temp_trips[i]);
0581         }
0582     }
0583     cmd.num_temps = cpu_to_le32(idx);
0584 
0585     if (!idx)
0586         goto send;
0587 
0588     /*sort cmd array*/
0589     sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL);
0590 
0591     /* we should save the indexes of trips because we sort
0592      * and compress the orginal array
0593      */
0594     for (i = 0; i < idx; i++) {
0595         for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) {
0596             if (le16_to_cpu(cmd.thresholds[i]) ==
0597                 mvm->tz_device.temp_trips[j])
0598                 mvm->tz_device.fw_trips_index[i] = j;
0599         }
0600     }
0601 
0602 send:
0603 #endif
0604     ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP,
0605                         TEMP_REPORTING_THRESHOLDS_CMD),
0606                    0, sizeof(cmd), &cmd);
0607     if (ret)
0608         IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n",
0609             ret);
0610 
0611     return ret;
0612 }
0613 
0614 #ifdef CONFIG_THERMAL
0615 static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device,
0616                   int *temperature)
0617 {
0618     struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
0619     int ret;
0620     int temp;
0621 
0622     mutex_lock(&mvm->mutex);
0623 
0624     if (!iwl_mvm_firmware_running(mvm) ||
0625         mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
0626         ret = -ENODATA;
0627         goto out;
0628     }
0629 
0630     ret = iwl_mvm_get_temp(mvm, &temp);
0631     if (ret)
0632         goto out;
0633 
0634     *temperature = temp * 1000;
0635 
0636 out:
0637     mutex_unlock(&mvm->mutex);
0638     return ret;
0639 }
0640 
0641 static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device,
0642                        int trip, int *temp)
0643 {
0644     struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
0645 
0646     if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
0647         return -EINVAL;
0648 
0649     *temp = mvm->tz_device.temp_trips[trip] * 1000;
0650 
0651     return 0;
0652 }
0653 
0654 static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device,
0655                        int trip, enum thermal_trip_type *type)
0656 {
0657     if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS)
0658         return -EINVAL;
0659 
0660     *type = THERMAL_TRIP_PASSIVE;
0661 
0662     return 0;
0663 }
0664 
0665 static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device,
0666                        int trip, int temp)
0667 {
0668     struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata;
0669     struct iwl_mvm_thermal_device *tzone;
0670     int i, ret;
0671     s16 temperature;
0672 
0673     mutex_lock(&mvm->mutex);
0674 
0675     if (!iwl_mvm_firmware_running(mvm) ||
0676         mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
0677         ret = -EIO;
0678         goto out;
0679     }
0680 
0681     if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) {
0682         ret = -EINVAL;
0683         goto out;
0684     }
0685 
0686     if ((temp / 1000) > S16_MAX) {
0687         ret = -EINVAL;
0688         goto out;
0689     }
0690 
0691     temperature = (s16)(temp / 1000);
0692     tzone = &mvm->tz_device;
0693 
0694     if (!tzone) {
0695         ret = -EIO;
0696         goto out;
0697     }
0698 
0699     /* no updates*/
0700     if (tzone->temp_trips[trip] == temperature) {
0701         ret = 0;
0702         goto out;
0703     }
0704 
0705     /* already existing temperature */
0706     for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
0707         if (tzone->temp_trips[i] == temperature) {
0708             ret = -EINVAL;
0709             goto out;
0710         }
0711     }
0712 
0713     tzone->temp_trips[trip] = temperature;
0714 
0715     ret = iwl_mvm_send_temp_report_ths_cmd(mvm);
0716 out:
0717     mutex_unlock(&mvm->mutex);
0718     return ret;
0719 }
0720 
0721 static  struct thermal_zone_device_ops tzone_ops = {
0722     .get_temp = iwl_mvm_tzone_get_temp,
0723     .get_trip_temp = iwl_mvm_tzone_get_trip_temp,
0724     .get_trip_type = iwl_mvm_tzone_get_trip_type,
0725     .set_trip_temp = iwl_mvm_tzone_set_trip_temp,
0726 };
0727 
0728 /* make all trips writable */
0729 #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1)
0730 
0731 static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm)
0732 {
0733     int i, ret;
0734     char name[16];
0735     static atomic_t counter = ATOMIC_INIT(0);
0736 
0737     if (!iwl_mvm_is_tt_in_fw(mvm)) {
0738         mvm->tz_device.tzone = NULL;
0739 
0740         return;
0741     }
0742 
0743     BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
0744 
0745     sprintf(name, "iwlwifi_%u", atomic_inc_return(&counter) & 0xFF);
0746     mvm->tz_device.tzone = thermal_zone_device_register(name,
0747                             IWL_MAX_DTS_TRIPS,
0748                             IWL_WRITABLE_TRIPS_MSK,
0749                             mvm, &tzone_ops,
0750                             NULL, 0, 0);
0751     if (IS_ERR(mvm->tz_device.tzone)) {
0752         IWL_DEBUG_TEMP(mvm,
0753                    "Failed to register to thermal zone (err = %ld)\n",
0754                    PTR_ERR(mvm->tz_device.tzone));
0755         mvm->tz_device.tzone = NULL;
0756         return;
0757     }
0758 
0759     ret = thermal_zone_device_enable(mvm->tz_device.tzone);
0760     if (ret) {
0761         IWL_DEBUG_TEMP(mvm, "Failed to enable thermal zone\n");
0762         thermal_zone_device_unregister(mvm->tz_device.tzone);
0763         return;
0764     }
0765 
0766     /* 0 is a valid temperature,
0767      * so initialize the array with S16_MIN which invalid temperature
0768      */
0769     for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++)
0770         mvm->tz_device.temp_trips[i] = S16_MIN;
0771 }
0772 
0773 static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev,
0774                        unsigned long *state)
0775 {
0776     *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1;
0777 
0778     return 0;
0779 }
0780 
0781 static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev,
0782                        unsigned long *state)
0783 {
0784     struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
0785 
0786     *state = mvm->cooling_dev.cur_state;
0787 
0788     return 0;
0789 }
0790 
0791 static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev,
0792                        unsigned long new_state)
0793 {
0794     struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata);
0795     int ret;
0796 
0797     mutex_lock(&mvm->mutex);
0798 
0799     if (!iwl_mvm_firmware_running(mvm) ||
0800         mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
0801         ret = -EIO;
0802         goto unlock;
0803     }
0804 
0805     if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) {
0806         ret = -EINVAL;
0807         goto unlock;
0808     }
0809 
0810     ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START,
0811                    new_state);
0812 
0813 unlock:
0814     mutex_unlock(&mvm->mutex);
0815     return ret;
0816 }
0817 
0818 static const struct thermal_cooling_device_ops tcooling_ops = {
0819     .get_max_state = iwl_mvm_tcool_get_max_state,
0820     .get_cur_state = iwl_mvm_tcool_get_cur_state,
0821     .set_cur_state = iwl_mvm_tcool_set_cur_state,
0822 };
0823 
0824 static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm)
0825 {
0826     char name[] = "iwlwifi";
0827 
0828     if (!iwl_mvm_is_ctdp_supported(mvm))
0829         return;
0830 
0831     BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
0832 
0833     mvm->cooling_dev.cdev =
0834         thermal_cooling_device_register(name,
0835                         mvm,
0836                         &tcooling_ops);
0837 
0838     if (IS_ERR(mvm->cooling_dev.cdev)) {
0839         IWL_DEBUG_TEMP(mvm,
0840                    "Failed to register to cooling device (err = %ld)\n",
0841                    PTR_ERR(mvm->cooling_dev.cdev));
0842         mvm->cooling_dev.cdev = NULL;
0843         return;
0844     }
0845 }
0846 
0847 static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm)
0848 {
0849     if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone)
0850         return;
0851 
0852     IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n");
0853     if (mvm->tz_device.tzone) {
0854         thermal_zone_device_unregister(mvm->tz_device.tzone);
0855         mvm->tz_device.tzone = NULL;
0856     }
0857 }
0858 
0859 static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm)
0860 {
0861     if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev)
0862         return;
0863 
0864     IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n");
0865     if (mvm->cooling_dev.cdev) {
0866         thermal_cooling_device_unregister(mvm->cooling_dev.cdev);
0867         mvm->cooling_dev.cdev = NULL;
0868     }
0869 }
0870 #endif /* CONFIG_THERMAL */
0871 
0872 void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff)
0873 {
0874     struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
0875 
0876     IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n");
0877 
0878     if (mvm->cfg->thermal_params)
0879         tt->params = *mvm->cfg->thermal_params;
0880     else
0881         tt->params = iwl_mvm_default_tt_params;
0882 
0883     tt->throttle = false;
0884     tt->dynamic_smps = false;
0885     tt->min_backoff = min_backoff;
0886     INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill);
0887 
0888 #ifdef CONFIG_THERMAL
0889     iwl_mvm_cooling_device_register(mvm);
0890     iwl_mvm_thermal_zone_register(mvm);
0891 #endif
0892     mvm->init_status |= IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
0893 }
0894 
0895 void iwl_mvm_thermal_exit(struct iwl_mvm *mvm)
0896 {
0897     if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE))
0898         return;
0899 
0900     cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
0901     IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
0902 
0903 #ifdef CONFIG_THERMAL
0904     iwl_mvm_cooling_device_unregister(mvm);
0905     iwl_mvm_thermal_zone_unregister(mvm);
0906 #endif
0907     mvm->init_status &= ~IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE;
0908 }
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