| /****************************************************************************** |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2013 - 2014, 2019 Intel Corporation. All rights reserved. |
| * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
| * Copyright(c) 2015 - 2016 Intel Deutschland GmbH |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called COPYING. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <linuxwifi@intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2012 - 2014, 2019 Intel Corporation. All rights reserved. |
| * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
| * Copyright(c) 2015 - 2016 Intel Deutschland GmbH |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| *****************************************************************************/ |
| |
| #include <linux/sort.h> |
| |
| #include "mvm.h" |
| |
| #define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ |
| |
| void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm) |
| { |
| struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; |
| u32 duration = tt->params.ct_kill_duration; |
| |
| if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) |
| return; |
| |
| IWL_ERR(mvm, "Enter CT Kill\n"); |
| iwl_mvm_set_hw_ctkill_state(mvm, true); |
| |
| if (!iwl_mvm_is_tt_in_fw(mvm)) { |
| tt->throttle = false; |
| tt->dynamic_smps = false; |
| } |
| |
| /* Don't schedule an exit work if we're in test mode, since |
| * the temperature will not change unless we manually set it |
| * again (or disable testing). |
| */ |
| if (!mvm->temperature_test) |
| schedule_delayed_work(&tt->ct_kill_exit, |
| round_jiffies_relative(duration * HZ)); |
| } |
| |
| static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm) |
| { |
| if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) |
| return; |
| |
| IWL_ERR(mvm, "Exit CT Kill\n"); |
| iwl_mvm_set_hw_ctkill_state(mvm, false); |
| } |
| |
| void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp) |
| { |
| /* ignore the notification if we are in test mode */ |
| if (mvm->temperature_test) |
| return; |
| |
| if (mvm->temperature == temp) |
| return; |
| |
| mvm->temperature = temp; |
| iwl_mvm_tt_handler(mvm); |
| } |
| |
| static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm, |
| struct iwl_rx_packet *pkt) |
| { |
| struct iwl_dts_measurement_notif_v1 *notif_v1; |
| int len = iwl_rx_packet_payload_len(pkt); |
| int temp; |
| |
| /* we can use notif_v1 only, because v2 only adds an additional |
| * parameter, which is not used in this function. |
| */ |
| if (WARN_ON_ONCE(len < sizeof(*notif_v1))) { |
| IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n"); |
| return -EINVAL; |
| } |
| |
| notif_v1 = (void *)pkt->data; |
| |
| temp = le32_to_cpu(notif_v1->temp); |
| |
| /* shouldn't be negative, but since it's s32, make sure it isn't */ |
| if (WARN_ON_ONCE(temp < 0)) |
| temp = 0; |
| |
| IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp); |
| |
| return temp; |
| } |
| |
| static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait, |
| struct iwl_rx_packet *pkt, void *data) |
| { |
| struct iwl_mvm *mvm = |
| container_of(notif_wait, struct iwl_mvm, notif_wait); |
| int *temp = data; |
| int ret; |
| |
| ret = iwl_mvm_temp_notif_parse(mvm, pkt); |
| if (ret < 0) |
| return true; |
| |
| *temp = ret; |
| |
| return true; |
| } |
| |
| void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_dts_measurement_notif_v2 *notif_v2; |
| int len = iwl_rx_packet_payload_len(pkt); |
| int temp; |
| u32 ths_crossed; |
| |
| /* the notification is handled synchronously in ctkill, so skip here */ |
| if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status)) |
| return; |
| |
| temp = iwl_mvm_temp_notif_parse(mvm, pkt); |
| |
| if (!iwl_mvm_is_tt_in_fw(mvm)) { |
| if (temp >= 0) |
| iwl_mvm_tt_temp_changed(mvm, temp); |
| return; |
| } |
| |
| if (WARN_ON_ONCE(len < sizeof(*notif_v2))) { |
| IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n"); |
| return; |
| } |
| |
| notif_v2 = (void *)pkt->data; |
| ths_crossed = le32_to_cpu(notif_v2->threshold_idx); |
| |
| /* 0xFF in ths_crossed means the notification is not related |
| * to a trip, so we can ignore it here. |
| */ |
| if (ths_crossed == 0xFF) |
| return; |
| |
| IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n", |
| temp, ths_crossed); |
| |
| #ifdef CONFIG_THERMAL |
| if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS)) |
| return; |
| |
| if (mvm->tz_device.tzone) { |
| struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device; |
| |
| thermal_notify_framework(tz_dev->tzone, |
| tz_dev->fw_trips_index[ths_crossed]); |
| } |
| #endif /* CONFIG_THERMAL */ |
| } |
| |
| void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct ct_kill_notif *notif; |
| int len = iwl_rx_packet_payload_len(pkt); |
| |
| if (WARN_ON_ONCE(len != sizeof(*notif))) { |
| IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n"); |
| return; |
| } |
| |
| notif = (struct ct_kill_notif *)pkt->data; |
| IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n", |
| notif->temperature); |
| |
| iwl_mvm_enter_ctkill(mvm); |
| } |
| |
| static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm) |
| { |
| struct iwl_dts_measurement_cmd cmd = { |
| .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP), |
| }; |
| struct iwl_ext_dts_measurement_cmd extcmd = { |
| .control_mode = cpu_to_le32(DTS_AUTOMATIC), |
| }; |
| u32 cmdid; |
| |
| cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE, |
| PHY_OPS_GROUP, 0); |
| |
| if (!fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) |
| return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(cmd), &cmd); |
| |
| return iwl_mvm_send_cmd_pdu(mvm, cmdid, 0, sizeof(extcmd), &extcmd); |
| } |
| |
| int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp) |
| { |
| struct iwl_notification_wait wait_temp_notif; |
| static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP, |
| DTS_MEASUREMENT_NOTIF_WIDE) }; |
| int ret; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif, |
| temp_notif, ARRAY_SIZE(temp_notif), |
| iwl_mvm_temp_notif_wait, temp); |
| |
| ret = iwl_mvm_get_temp_cmd(mvm); |
| if (ret) { |
| IWL_ERR(mvm, "Failed to get the temperature (err=%d)\n", ret); |
| iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif); |
| return ret; |
| } |
| |
| ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif, |
| IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT); |
| if (ret) |
| IWL_ERR(mvm, "Getting the temperature timed out\n"); |
| |
| return ret; |
| } |
| |
| static void check_exit_ctkill(struct work_struct *work) |
| { |
| struct iwl_mvm_tt_mgmt *tt; |
| struct iwl_mvm *mvm; |
| u32 duration; |
| s32 temp; |
| int ret; |
| |
| tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work); |
| mvm = container_of(tt, struct iwl_mvm, thermal_throttle); |
| |
| if (iwl_mvm_is_tt_in_fw(mvm)) { |
| iwl_mvm_exit_ctkill(mvm); |
| |
| return; |
| } |
| |
| duration = tt->params.ct_kill_duration; |
| |
| mutex_lock(&mvm->mutex); |
| |
| if (__iwl_mvm_mac_start(mvm)) |
| goto reschedule; |
| |
| ret = iwl_mvm_get_temp(mvm, &temp); |
| |
| __iwl_mvm_mac_stop(mvm); |
| |
| if (ret) |
| goto reschedule; |
| |
| IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp); |
| |
| if (temp <= tt->params.ct_kill_exit) { |
| mutex_unlock(&mvm->mutex); |
| iwl_mvm_exit_ctkill(mvm); |
| return; |
| } |
| |
| reschedule: |
| mutex_unlock(&mvm->mutex); |
| schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit, |
| round_jiffies(duration * HZ)); |
| } |
| |
| static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_mvm *mvm = _data; |
| enum ieee80211_smps_mode smps_mode; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (mvm->thermal_throttle.dynamic_smps) |
| smps_mode = IEEE80211_SMPS_DYNAMIC; |
| else |
| smps_mode = IEEE80211_SMPS_AUTOMATIC; |
| |
| if (vif->type != NL80211_IFTYPE_STATION) |
| return; |
| |
| iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode); |
| } |
| |
| static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable) |
| { |
| struct iwl_mvm_sta *mvmsta; |
| int i, err; |
| |
| for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { |
| mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i); |
| if (!mvmsta) |
| continue; |
| |
| if (enable == mvmsta->tt_tx_protection) |
| continue; |
| err = iwl_mvm_tx_protection(mvm, mvmsta, enable); |
| if (err) { |
| IWL_ERR(mvm, "Failed to %s Tx protection\n", |
| enable ? "enable" : "disable"); |
| } else { |
| IWL_DEBUG_TEMP(mvm, "%s Tx protection\n", |
| enable ? "Enable" : "Disable"); |
| mvmsta->tt_tx_protection = enable; |
| } |
| } |
| } |
| |
| void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff) |
| { |
| struct iwl_host_cmd cmd = { |
| .id = REPLY_THERMAL_MNG_BACKOFF, |
| .len = { sizeof(u32), }, |
| .data = { &backoff, }, |
| }; |
| |
| backoff = max(backoff, mvm->thermal_throttle.min_backoff); |
| |
| if (iwl_mvm_send_cmd(mvm, &cmd) == 0) { |
| IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n", |
| backoff); |
| mvm->thermal_throttle.tx_backoff = backoff; |
| } else { |
| IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n"); |
| } |
| } |
| |
| void iwl_mvm_tt_handler(struct iwl_mvm *mvm) |
| { |
| struct iwl_tt_params *params = &mvm->thermal_throttle.params; |
| struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; |
| s32 temperature = mvm->temperature; |
| bool throttle_enable = false; |
| int i; |
| u32 tx_backoff; |
| |
| IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature); |
| |
| if (params->support_ct_kill && temperature >= params->ct_kill_entry) { |
| iwl_mvm_enter_ctkill(mvm); |
| return; |
| } |
| |
| if (params->support_ct_kill && |
| temperature <= params->ct_kill_exit) { |
| iwl_mvm_exit_ctkill(mvm); |
| return; |
| } |
| |
| if (params->support_dynamic_smps) { |
| if (!tt->dynamic_smps && |
| temperature >= params->dynamic_smps_entry) { |
| IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n"); |
| tt->dynamic_smps = true; |
| ieee80211_iterate_active_interfaces_atomic( |
| mvm->hw, IEEE80211_IFACE_ITER_NORMAL, |
| iwl_mvm_tt_smps_iterator, mvm); |
| throttle_enable = true; |
| } else if (tt->dynamic_smps && |
| temperature <= params->dynamic_smps_exit) { |
| IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n"); |
| tt->dynamic_smps = false; |
| ieee80211_iterate_active_interfaces_atomic( |
| mvm->hw, IEEE80211_IFACE_ITER_NORMAL, |
| iwl_mvm_tt_smps_iterator, mvm); |
| } |
| } |
| |
| if (params->support_tx_protection) { |
| if (temperature >= params->tx_protection_entry) { |
| iwl_mvm_tt_tx_protection(mvm, true); |
| throttle_enable = true; |
| } else if (temperature <= params->tx_protection_exit) { |
| iwl_mvm_tt_tx_protection(mvm, false); |
| } |
| } |
| |
| if (params->support_tx_backoff) { |
| tx_backoff = tt->min_backoff; |
| for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) { |
| if (temperature < params->tx_backoff[i].temperature) |
| break; |
| tx_backoff = max(tt->min_backoff, |
| params->tx_backoff[i].backoff); |
| } |
| if (tx_backoff != tt->min_backoff) |
| throttle_enable = true; |
| if (tt->tx_backoff != tx_backoff) |
| iwl_mvm_tt_tx_backoff(mvm, tx_backoff); |
| } |
| |
| if (!tt->throttle && throttle_enable) { |
| IWL_WARN(mvm, |
| "Due to high temperature thermal throttling initiated\n"); |
| tt->throttle = true; |
| } else if (tt->throttle && !tt->dynamic_smps && |
| tt->tx_backoff == tt->min_backoff && |
| temperature <= params->tx_protection_exit) { |
| IWL_WARN(mvm, |
| "Temperature is back to normal thermal throttling stopped\n"); |
| tt->throttle = false; |
| } |
| } |
| |
| static const struct iwl_tt_params iwl_mvm_default_tt_params = { |
| .ct_kill_entry = 118, |
| .ct_kill_exit = 96, |
| .ct_kill_duration = 5, |
| .dynamic_smps_entry = 114, |
| .dynamic_smps_exit = 110, |
| .tx_protection_entry = 114, |
| .tx_protection_exit = 108, |
| .tx_backoff = { |
| {.temperature = 112, .backoff = 200}, |
| {.temperature = 113, .backoff = 600}, |
| {.temperature = 114, .backoff = 1200}, |
| {.temperature = 115, .backoff = 2000}, |
| {.temperature = 116, .backoff = 4000}, |
| {.temperature = 117, .backoff = 10000}, |
| }, |
| .support_ct_kill = true, |
| .support_dynamic_smps = true, |
| .support_tx_protection = true, |
| .support_tx_backoff = true, |
| }; |
| |
| /* budget in mWatt */ |
| static const u32 iwl_mvm_cdev_budgets[] = { |
| 2000, /* cooling state 0 */ |
| 1800, /* cooling state 1 */ |
| 1600, /* cooling state 2 */ |
| 1400, /* cooling state 3 */ |
| 1200, /* cooling state 4 */ |
| 1000, /* cooling state 5 */ |
| 900, /* cooling state 6 */ |
| 800, /* cooling state 7 */ |
| 700, /* cooling state 8 */ |
| 650, /* cooling state 9 */ |
| 600, /* cooling state 10 */ |
| 550, /* cooling state 11 */ |
| 500, /* cooling state 12 */ |
| 450, /* cooling state 13 */ |
| 400, /* cooling state 14 */ |
| 350, /* cooling state 15 */ |
| 300, /* cooling state 16 */ |
| 250, /* cooling state 17 */ |
| 200, /* cooling state 18 */ |
| 150, /* cooling state 19 */ |
| }; |
| |
| int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 state) |
| { |
| struct iwl_mvm_ctdp_cmd cmd = { |
| .operation = cpu_to_le32(op), |
| .budget = cpu_to_le32(iwl_mvm_cdev_budgets[state]), |
| .window_size = 0, |
| }; |
| int ret; |
| u32 status; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| status = 0; |
| ret = iwl_mvm_send_cmd_pdu_status(mvm, WIDE_ID(PHY_OPS_GROUP, |
| CTDP_CONFIG_CMD), |
| sizeof(cmd), &cmd, &status); |
| |
| if (ret) { |
| IWL_ERR(mvm, "cTDP command failed (err=%d)\n", ret); |
| return ret; |
| } |
| |
| switch (op) { |
| case CTDP_CMD_OPERATION_START: |
| #ifdef CONFIG_THERMAL |
| mvm->cooling_dev.cur_state = state; |
| #endif /* CONFIG_THERMAL */ |
| break; |
| case CTDP_CMD_OPERATION_REPORT: |
| IWL_DEBUG_TEMP(mvm, "cTDP avg energy in mWatt = %d\n", status); |
| /* when the function is called with CTDP_CMD_OPERATION_REPORT |
| * option the function should return the average budget value |
| * that is received from the FW. |
| * The budget can't be less or equal to 0, so it's possible |
| * to distinguish between error values and budgets. |
| */ |
| return status; |
| case CTDP_CMD_OPERATION_STOP: |
| IWL_DEBUG_TEMP(mvm, "cTDP stopped successfully\n"); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_THERMAL |
| static int compare_temps(const void *a, const void *b) |
| { |
| return ((s16)le16_to_cpu(*(__le16 *)a) - |
| (s16)le16_to_cpu(*(__le16 *)b)); |
| } |
| #endif |
| |
| int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm) |
| { |
| struct temp_report_ths_cmd cmd = {0}; |
| int ret; |
| #ifdef CONFIG_THERMAL |
| int i, j, idx = 0; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (!mvm->tz_device.tzone) |
| goto send; |
| |
| /* The driver holds array of temperature trips that are unsorted |
| * and uncompressed, the FW should get it compressed and sorted |
| */ |
| |
| /* compress temp_trips to cmd array, remove uninitialized values*/ |
| for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) { |
| if (mvm->tz_device.temp_trips[i] != S16_MIN) { |
| cmd.thresholds[idx++] = |
| cpu_to_le16(mvm->tz_device.temp_trips[i]); |
| } |
| } |
| cmd.num_temps = cpu_to_le32(idx); |
| |
| if (!idx) |
| goto send; |
| |
| /*sort cmd array*/ |
| sort(cmd.thresholds, idx, sizeof(s16), compare_temps, NULL); |
| |
| /* we should save the indexes of trips because we sort |
| * and compress the orginal array |
| */ |
| for (i = 0; i < idx; i++) { |
| for (j = 0; j < IWL_MAX_DTS_TRIPS; j++) { |
| if (le16_to_cpu(cmd.thresholds[i]) == |
| mvm->tz_device.temp_trips[j]) |
| mvm->tz_device.fw_trips_index[i] = j; |
| } |
| } |
| |
| send: |
| #endif |
| ret = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(PHY_OPS_GROUP, |
| TEMP_REPORTING_THRESHOLDS_CMD), |
| 0, sizeof(cmd), &cmd); |
| if (ret) |
| IWL_ERR(mvm, "TEMP_REPORT_THS_CMD command failed (err=%d)\n", |
| ret); |
| |
| return ret; |
| } |
| |
| #ifdef CONFIG_THERMAL |
| static int iwl_mvm_tzone_get_temp(struct thermal_zone_device *device, |
| int *temperature) |
| { |
| struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; |
| int ret; |
| int temp; |
| |
| mutex_lock(&mvm->mutex); |
| |
| if (!iwl_mvm_firmware_running(mvm) || |
| mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) { |
| ret = -ENODATA; |
| goto out; |
| } |
| |
| ret = iwl_mvm_get_temp(mvm, &temp); |
| if (ret) |
| goto out; |
| |
| *temperature = temp * 1000; |
| |
| out: |
| mutex_unlock(&mvm->mutex); |
| return ret; |
| } |
| |
| static int iwl_mvm_tzone_get_trip_temp(struct thermal_zone_device *device, |
| int trip, int *temp) |
| { |
| struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; |
| |
| if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) |
| return -EINVAL; |
| |
| *temp = mvm->tz_device.temp_trips[trip] * 1000; |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_tzone_get_trip_type(struct thermal_zone_device *device, |
| int trip, enum thermal_trip_type *type) |
| { |
| if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) |
| return -EINVAL; |
| |
| *type = THERMAL_TRIP_PASSIVE; |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device, |
| int trip, int temp) |
| { |
| struct iwl_mvm *mvm = (struct iwl_mvm *)device->devdata; |
| struct iwl_mvm_thermal_device *tzone; |
| int i, ret; |
| s16 temperature; |
| |
| mutex_lock(&mvm->mutex); |
| |
| if (!iwl_mvm_firmware_running(mvm) || |
| mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) { |
| ret = -EIO; |
| goto out; |
| } |
| |
| if (trip < 0 || trip >= IWL_MAX_DTS_TRIPS) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| if ((temp / 1000) > S16_MAX) { |
| ret = -EINVAL; |
| goto out; |
| } |
| |
| temperature = (s16)(temp / 1000); |
| tzone = &mvm->tz_device; |
| |
| if (!tzone) { |
| ret = -EIO; |
| goto out; |
| } |
| |
| /* no updates*/ |
| if (tzone->temp_trips[trip] == temperature) { |
| ret = 0; |
| goto out; |
| } |
| |
| /* already existing temperature */ |
| for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) { |
| if (tzone->temp_trips[i] == temperature) { |
| ret = -EINVAL; |
| goto out; |
| } |
| } |
| |
| tzone->temp_trips[trip] = temperature; |
| |
| ret = iwl_mvm_send_temp_report_ths_cmd(mvm); |
| out: |
| mutex_unlock(&mvm->mutex); |
| return ret; |
| } |
| |
| static struct thermal_zone_device_ops tzone_ops = { |
| .get_temp = iwl_mvm_tzone_get_temp, |
| .get_trip_temp = iwl_mvm_tzone_get_trip_temp, |
| .get_trip_type = iwl_mvm_tzone_get_trip_type, |
| .set_trip_temp = iwl_mvm_tzone_set_trip_temp, |
| }; |
| |
| /* make all trips writable */ |
| #define IWL_WRITABLE_TRIPS_MSK (BIT(IWL_MAX_DTS_TRIPS) - 1) |
| |
| static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm) |
| { |
| int i; |
| char name[16]; |
| static atomic_t counter = ATOMIC_INIT(0); |
| |
| if (!iwl_mvm_is_tt_in_fw(mvm)) { |
| mvm->tz_device.tzone = NULL; |
| |
| return; |
| } |
| |
| BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH); |
| |
| sprintf(name, "iwlwifi_%u", atomic_inc_return(&counter) & 0xFF); |
| mvm->tz_device.tzone = thermal_zone_device_register(name, |
| IWL_MAX_DTS_TRIPS, |
| IWL_WRITABLE_TRIPS_MSK, |
| mvm, &tzone_ops, |
| NULL, 0, 0); |
| if (IS_ERR(mvm->tz_device.tzone)) { |
| IWL_DEBUG_TEMP(mvm, |
| "Failed to register to thermal zone (err = %ld)\n", |
| PTR_ERR(mvm->tz_device.tzone)); |
| mvm->tz_device.tzone = NULL; |
| return; |
| } |
| |
| /* 0 is a valid temperature, |
| * so initialize the array with S16_MIN which invalid temperature |
| */ |
| for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) |
| mvm->tz_device.temp_trips[i] = S16_MIN; |
| } |
| |
| static int iwl_mvm_tcool_get_max_state(struct thermal_cooling_device *cdev, |
| unsigned long *state) |
| { |
| *state = ARRAY_SIZE(iwl_mvm_cdev_budgets) - 1; |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_tcool_get_cur_state(struct thermal_cooling_device *cdev, |
| unsigned long *state) |
| { |
| struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata); |
| |
| *state = mvm->cooling_dev.cur_state; |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev, |
| unsigned long new_state) |
| { |
| struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata); |
| int ret; |
| |
| mutex_lock(&mvm->mutex); |
| |
| if (!iwl_mvm_firmware_running(mvm) || |
| mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) { |
| ret = -EIO; |
| goto unlock; |
| } |
| |
| if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) { |
| ret = -EINVAL; |
| goto unlock; |
| } |
| |
| ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_START, |
| new_state); |
| |
| unlock: |
| mutex_unlock(&mvm->mutex); |
| return ret; |
| } |
| |
| static const struct thermal_cooling_device_ops tcooling_ops = { |
| .get_max_state = iwl_mvm_tcool_get_max_state, |
| .get_cur_state = iwl_mvm_tcool_get_cur_state, |
| .set_cur_state = iwl_mvm_tcool_set_cur_state, |
| }; |
| |
| static void iwl_mvm_cooling_device_register(struct iwl_mvm *mvm) |
| { |
| char name[] = "iwlwifi"; |
| |
| if (!iwl_mvm_is_ctdp_supported(mvm)) |
| return; |
| |
| BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH); |
| |
| mvm->cooling_dev.cdev = |
| thermal_cooling_device_register(name, |
| mvm, |
| &tcooling_ops); |
| |
| if (IS_ERR(mvm->cooling_dev.cdev)) { |
| IWL_DEBUG_TEMP(mvm, |
| "Failed to register to cooling device (err = %ld)\n", |
| PTR_ERR(mvm->cooling_dev.cdev)); |
| mvm->cooling_dev.cdev = NULL; |
| return; |
| } |
| } |
| |
| static void iwl_mvm_thermal_zone_unregister(struct iwl_mvm *mvm) |
| { |
| if (!iwl_mvm_is_tt_in_fw(mvm) || !mvm->tz_device.tzone) |
| return; |
| |
| IWL_DEBUG_TEMP(mvm, "Thermal zone device unregister\n"); |
| if (mvm->tz_device.tzone) { |
| thermal_zone_device_unregister(mvm->tz_device.tzone); |
| mvm->tz_device.tzone = NULL; |
| } |
| } |
| |
| static void iwl_mvm_cooling_device_unregister(struct iwl_mvm *mvm) |
| { |
| if (!iwl_mvm_is_ctdp_supported(mvm) || !mvm->cooling_dev.cdev) |
| return; |
| |
| IWL_DEBUG_TEMP(mvm, "Cooling device unregister\n"); |
| if (mvm->cooling_dev.cdev) { |
| thermal_cooling_device_unregister(mvm->cooling_dev.cdev); |
| mvm->cooling_dev.cdev = NULL; |
| } |
| } |
| #endif /* CONFIG_THERMAL */ |
| |
| void iwl_mvm_thermal_initialize(struct iwl_mvm *mvm, u32 min_backoff) |
| { |
| struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle; |
| |
| IWL_DEBUG_TEMP(mvm, "Initialize Thermal Throttling\n"); |
| |
| if (mvm->cfg->thermal_params) |
| tt->params = *mvm->cfg->thermal_params; |
| else |
| tt->params = iwl_mvm_default_tt_params; |
| |
| tt->throttle = false; |
| tt->dynamic_smps = false; |
| tt->min_backoff = min_backoff; |
| INIT_DELAYED_WORK(&tt->ct_kill_exit, check_exit_ctkill); |
| |
| #ifdef CONFIG_THERMAL |
| iwl_mvm_cooling_device_register(mvm); |
| iwl_mvm_thermal_zone_register(mvm); |
| #endif |
| mvm->init_status |= IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE; |
| } |
| |
| void iwl_mvm_thermal_exit(struct iwl_mvm *mvm) |
| { |
| if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE)) |
| return; |
| |
| cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit); |
| IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n"); |
| |
| #ifdef CONFIG_THERMAL |
| iwl_mvm_cooling_device_unregister(mvm); |
| iwl_mvm_thermal_zone_unregister(mvm); |
| #endif |
| mvm->init_status &= ~IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE; |
| } |