862 lines
21 KiB
C
862 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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/*
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* Copyright (C) 2012-2014, 2019-2021 Intel Corporation
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* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
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* Copyright (C) 2015-2016 Intel Deutschland GmbH
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*/
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#include <linux/sort.h>
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#include "mvm.h"
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#define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ
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void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm)
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{
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struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
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u32 duration = tt->params.ct_kill_duration;
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if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
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return;
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IWL_ERR(mvm, "Enter CT Kill\n");
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iwl_mvm_set_hw_ctkill_state(mvm, true);
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if (!iwl_mvm_is_tt_in_fw(mvm)) {
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tt->throttle = false;
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tt->dynamic_smps = false;
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}
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/* Don't schedule an exit work if we're in test mode, since
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* the temperature will not change unless we manually set it
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* again (or disable testing).
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*/
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if (!mvm->temperature_test)
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schedule_delayed_work(&tt->ct_kill_exit,
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round_jiffies_relative(duration * HZ));
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}
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static void iwl_mvm_exit_ctkill(struct iwl_mvm *mvm)
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{
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if (!test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
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return;
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IWL_ERR(mvm, "Exit CT Kill\n");
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iwl_mvm_set_hw_ctkill_state(mvm, false);
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}
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static void iwl_mvm_tt_temp_changed(struct iwl_mvm *mvm, u32 temp)
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{
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/* ignore the notification if we are in test mode */
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if (mvm->temperature_test)
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return;
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if (mvm->temperature == temp)
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return;
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mvm->temperature = temp;
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iwl_mvm_tt_handler(mvm);
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}
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static int iwl_mvm_temp_notif_parse(struct iwl_mvm *mvm,
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struct iwl_rx_packet *pkt)
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{
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struct iwl_dts_measurement_notif_v1 *notif_v1;
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int len = iwl_rx_packet_payload_len(pkt);
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int temp;
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/* we can use notif_v1 only, because v2 only adds an additional
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* parameter, which is not used in this function.
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*/
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if (WARN_ON_ONCE(len < sizeof(*notif_v1))) {
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IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
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return -EINVAL;
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}
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notif_v1 = (void *)pkt->data;
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temp = le32_to_cpu(notif_v1->temp);
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/* shouldn't be negative, but since it's s32, make sure it isn't */
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if (WARN_ON_ONCE(temp < 0))
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temp = 0;
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IWL_DEBUG_TEMP(mvm, "DTS_MEASUREMENT_NOTIFICATION - %d\n", temp);
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return temp;
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}
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static bool iwl_mvm_temp_notif_wait(struct iwl_notif_wait_data *notif_wait,
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struct iwl_rx_packet *pkt, void *data)
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{
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struct iwl_mvm *mvm =
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container_of(notif_wait, struct iwl_mvm, notif_wait);
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int *temp = data;
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int ret;
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ret = iwl_mvm_temp_notif_parse(mvm, pkt);
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if (ret < 0)
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return true;
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*temp = ret;
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return true;
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}
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void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwl_dts_measurement_notif_v2 *notif_v2;
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int len = iwl_rx_packet_payload_len(pkt);
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int temp;
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u32 ths_crossed;
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/* the notification is handled synchronously in ctkill, so skip here */
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if (test_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status))
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return;
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temp = iwl_mvm_temp_notif_parse(mvm, pkt);
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if (!iwl_mvm_is_tt_in_fw(mvm)) {
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if (temp >= 0)
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iwl_mvm_tt_temp_changed(mvm, temp);
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return;
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}
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if (WARN_ON_ONCE(len < sizeof(*notif_v2))) {
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IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n");
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return;
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}
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notif_v2 = (void *)pkt->data;
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ths_crossed = le32_to_cpu(notif_v2->threshold_idx);
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/* 0xFF in ths_crossed means the notification is not related
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* to a trip, so we can ignore it here.
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*/
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if (ths_crossed == 0xFF)
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return;
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IWL_DEBUG_TEMP(mvm, "Temp = %d Threshold crossed = %d\n",
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temp, ths_crossed);
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#ifdef CONFIG_THERMAL
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if (WARN_ON(ths_crossed >= IWL_MAX_DTS_TRIPS))
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return;
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if (mvm->tz_device.tzone) {
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struct iwl_mvm_thermal_device *tz_dev = &mvm->tz_device;
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thermal_zone_device_update(tz_dev->tzone,
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THERMAL_TRIP_VIOLATED);
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}
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#endif /* CONFIG_THERMAL */
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}
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void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct ct_kill_notif *notif;
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notif = (struct ct_kill_notif *)pkt->data;
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IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
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notif->temperature);
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if (iwl_fw_lookup_notif_ver(mvm->fw, PHY_OPS_GROUP,
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CT_KILL_NOTIFICATION, 0) > 1)
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IWL_DEBUG_TEMP(mvm,
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"CT kill notification DTS bitmap = 0x%x, Scheme = %d\n",
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notif->dts, notif->scheme);
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iwl_mvm_enter_ctkill(mvm);
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}
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/*
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* send the DTS_MEASUREMENT_TRIGGER command with or without waiting for a
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* response. If we get a response then the measurement is stored in 'temp'
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*/
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static int iwl_mvm_send_temp_cmd(struct iwl_mvm *mvm, bool response, s32 *temp)
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{
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struct iwl_host_cmd cmd = {};
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struct iwl_dts_measurement_cmd dts_cmd = {
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.flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
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};
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struct iwl_ext_dts_measurement_cmd ext_cmd = {
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.control_mode = cpu_to_le32(DTS_DIRECT_WITHOUT_MEASURE),
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};
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struct iwl_dts_measurement_resp *resp;
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void *cmd_ptr;
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int ret;
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u32 cmd_flags = 0;
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u16 len;
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/* Check which command format is used (regular/extended) */
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if (fw_has_capa(&mvm->fw->ucode_capa,
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IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) {
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len = sizeof(ext_cmd);
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cmd_ptr = &ext_cmd;
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} else {
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len = sizeof(dts_cmd);
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cmd_ptr = &dts_cmd;
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}
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/* The command version where we get a response is zero length */
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if (response) {
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cmd_flags = CMD_WANT_SKB;
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len = 0;
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}
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cmd.id = WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE);
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cmd.len[0] = len;
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cmd.flags = cmd_flags;
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cmd.data[0] = cmd_ptr;
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IWL_DEBUG_TEMP(mvm,
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"Sending temperature measurement command - %s response\n",
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response ? "with" : "without");
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ret = iwl_mvm_send_cmd(mvm, &cmd);
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if (ret) {
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IWL_ERR(mvm,
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"Failed to send the temperature measurement command (err=%d)\n",
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ret);
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return ret;
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}
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if (response) {
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resp = (void *)cmd.resp_pkt->data;
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*temp = le32_to_cpu(resp->temp);
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IWL_DEBUG_TEMP(mvm,
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"Got temperature measurement response: temp=%d\n",
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*temp);
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iwl_free_resp(&cmd);
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}
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return ret;
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}
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int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp)
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{
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struct iwl_notification_wait wait_temp_notif;
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static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP,
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DTS_MEASUREMENT_NOTIF_WIDE) };
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int ret;
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u8 cmd_ver;
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/*
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* If command version is 1 we send the command and immediately get
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* a response. For older versions we send the command and wait for a
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* notification (no command TLV for previous versions).
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*/
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cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
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WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
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IWL_FW_CMD_VER_UNKNOWN);
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if (cmd_ver == 1)
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return iwl_mvm_send_temp_cmd(mvm, true, temp);
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lockdep_assert_held(&mvm->mutex);
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iwl_init_notification_wait(&mvm->notif_wait, &wait_temp_notif,
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temp_notif, ARRAY_SIZE(temp_notif),
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iwl_mvm_temp_notif_wait, temp);
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ret = iwl_mvm_send_temp_cmd(mvm, false, temp);
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if (ret) {
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iwl_remove_notification(&mvm->notif_wait, &wait_temp_notif);
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return ret;
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}
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ret = iwl_wait_notification(&mvm->notif_wait, &wait_temp_notif,
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IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT);
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if (ret)
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IWL_WARN(mvm, "Getting the temperature timed out\n");
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return ret;
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}
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static void check_exit_ctkill(struct work_struct *work)
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{
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struct iwl_mvm_tt_mgmt *tt;
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struct iwl_mvm *mvm;
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u32 duration;
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s32 temp;
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int ret;
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tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work);
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mvm = container_of(tt, struct iwl_mvm, thermal_throttle);
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if (iwl_mvm_is_tt_in_fw(mvm)) {
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iwl_mvm_exit_ctkill(mvm);
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return;
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}
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duration = tt->params.ct_kill_duration;
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flush_work(&mvm->roc_done_wk);
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mutex_lock(&mvm->mutex);
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if (__iwl_mvm_mac_start(mvm))
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goto reschedule;
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ret = iwl_mvm_get_temp(mvm, &temp);
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__iwl_mvm_mac_stop(mvm);
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if (ret)
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goto reschedule;
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IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", temp);
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if (temp <= tt->params.ct_kill_exit) {
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mutex_unlock(&mvm->mutex);
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iwl_mvm_exit_ctkill(mvm);
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return;
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}
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reschedule:
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mutex_unlock(&mvm->mutex);
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schedule_delayed_work(&mvm->thermal_throttle.ct_kill_exit,
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round_jiffies(duration * HZ));
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}
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static void iwl_mvm_tt_smps_iterator(void *_data, u8 *mac,
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struct ieee80211_vif *vif)
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{
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struct iwl_mvm *mvm = _data;
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enum ieee80211_smps_mode smps_mode;
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lockdep_assert_held(&mvm->mutex);
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if (mvm->thermal_throttle.dynamic_smps)
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smps_mode = IEEE80211_SMPS_DYNAMIC;
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else
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smps_mode = IEEE80211_SMPS_AUTOMATIC;
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if (vif->type != NL80211_IFTYPE_STATION)
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return;
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iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, smps_mode);
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}
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static void iwl_mvm_tt_tx_protection(struct iwl_mvm *mvm, bool enable)
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{
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struct iwl_mvm_sta *mvmsta;
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int i, err;
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for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
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mvmsta = iwl_mvm_sta_from_staid_protected(mvm, i);
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if (!mvmsta)
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continue;
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if (enable == mvmsta->tt_tx_protection)
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continue;
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err = iwl_mvm_tx_protection(mvm, mvmsta, enable);
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if (err) {
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IWL_ERR(mvm, "Failed to %s Tx protection\n",
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enable ? "enable" : "disable");
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} else {
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IWL_DEBUG_TEMP(mvm, "%s Tx protection\n",
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enable ? "Enable" : "Disable");
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mvmsta->tt_tx_protection = enable;
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}
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}
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}
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void iwl_mvm_tt_tx_backoff(struct iwl_mvm *mvm, u32 backoff)
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{
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struct iwl_host_cmd cmd = {
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.id = REPLY_THERMAL_MNG_BACKOFF,
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.len = { sizeof(u32), },
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.data = { &backoff, },
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};
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backoff = max(backoff, mvm->thermal_throttle.min_backoff);
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if (iwl_mvm_send_cmd(mvm, &cmd) == 0) {
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IWL_DEBUG_TEMP(mvm, "Set Thermal Tx backoff to: %u\n",
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backoff);
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mvm->thermal_throttle.tx_backoff = backoff;
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} else {
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IWL_ERR(mvm, "Failed to change Thermal Tx backoff\n");
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}
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}
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void iwl_mvm_tt_handler(struct iwl_mvm *mvm)
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{
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struct iwl_tt_params *params = &mvm->thermal_throttle.params;
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struct iwl_mvm_tt_mgmt *tt = &mvm->thermal_throttle;
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s32 temperature = mvm->temperature;
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bool throttle_enable = false;
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int i;
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u32 tx_backoff;
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IWL_DEBUG_TEMP(mvm, "NIC temperature: %d\n", mvm->temperature);
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if (params->support_ct_kill && temperature >= params->ct_kill_entry) {
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iwl_mvm_enter_ctkill(mvm);
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return;
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}
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if (params->support_ct_kill &&
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temperature <= params->ct_kill_exit) {
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iwl_mvm_exit_ctkill(mvm);
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return;
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}
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if (params->support_dynamic_smps) {
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if (!tt->dynamic_smps &&
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temperature >= params->dynamic_smps_entry) {
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IWL_DEBUG_TEMP(mvm, "Enable dynamic SMPS\n");
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tt->dynamic_smps = true;
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ieee80211_iterate_active_interfaces_atomic(
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mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
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iwl_mvm_tt_smps_iterator, mvm);
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throttle_enable = true;
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} else if (tt->dynamic_smps &&
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temperature <= params->dynamic_smps_exit) {
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IWL_DEBUG_TEMP(mvm, "Disable dynamic SMPS\n");
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tt->dynamic_smps = false;
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ieee80211_iterate_active_interfaces_atomic(
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mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
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iwl_mvm_tt_smps_iterator, mvm);
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}
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}
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if (params->support_tx_protection) {
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if (temperature >= params->tx_protection_entry) {
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iwl_mvm_tt_tx_protection(mvm, true);
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throttle_enable = true;
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} else if (temperature <= params->tx_protection_exit) {
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iwl_mvm_tt_tx_protection(mvm, false);
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}
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}
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if (params->support_tx_backoff) {
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tx_backoff = tt->min_backoff;
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for (i = 0; i < TT_TX_BACKOFF_SIZE; i++) {
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if (temperature < params->tx_backoff[i].temperature)
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break;
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tx_backoff = max(tt->min_backoff,
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params->tx_backoff[i].backoff);
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}
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if (tx_backoff != tt->min_backoff)
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throttle_enable = true;
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if (tt->tx_backoff != tx_backoff)
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iwl_mvm_tt_tx_backoff(mvm, tx_backoff);
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}
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if (!tt->throttle && throttle_enable) {
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IWL_WARN(mvm,
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"Due to high temperature thermal throttling initiated\n");
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tt->throttle = true;
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} else if (tt->throttle && !tt->dynamic_smps &&
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tt->tx_backoff == tt->min_backoff &&
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temperature <= params->tx_protection_exit) {
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IWL_WARN(mvm,
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"Temperature is back to normal thermal throttling stopped\n");
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tt->throttle = false;
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}
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}
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static const struct iwl_tt_params iwl_mvm_default_tt_params = {
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.ct_kill_entry = 118,
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.ct_kill_exit = 96,
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.ct_kill_duration = 5,
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.dynamic_smps_entry = 114,
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.dynamic_smps_exit = 110,
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.tx_protection_entry = 114,
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.tx_protection_exit = 108,
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.tx_backoff = {
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{.temperature = 112, .backoff = 200},
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{.temperature = 113, .backoff = 600},
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{.temperature = 114, .backoff = 1200},
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{.temperature = 115, .backoff = 2000},
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{.temperature = 116, .backoff = 4000},
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{.temperature = 117, .backoff = 10000},
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},
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.support_ct_kill = true,
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.support_dynamic_smps = true,
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.support_tx_protection = true,
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.support_tx_backoff = true,
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};
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/* budget in mWatt */
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static const u32 iwl_mvm_cdev_budgets[] = {
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2400, /* cooling state 0 */
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2000, /* cooling state 1 */
|
|
1800, /* cooling state 2 */
|
|
1600, /* cooling state 3 */
|
|
1400, /* cooling state 4 */
|
|
1200, /* cooling state 5 */
|
|
1000, /* cooling state 6 */
|
|
900, /* cooling state 7 */
|
|
800, /* cooling state 8 */
|
|
700, /* cooling state 9 */
|
|
650, /* cooling state 10 */
|
|
600, /* cooling state 11 */
|
|
550, /* cooling state 12 */
|
|
500, /* cooling state 13 */
|
|
450, /* cooling state 14 */
|
|
400, /* cooling state 15 */
|
|
350, /* cooling state 16 */
|
|
300, /* cooling state 17 */
|
|
250, /* cooling state 18 */
|
|
200, /* cooling state 19 */
|
|
150, /* cooling state 20 */
|
|
};
|
|
|
|
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 trips to cmd array, remove uninitialized values*/
|
|
for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) {
|
|
if (mvm->tz_device.trips[i].temperature != INT_MIN) {
|
|
cmd.thresholds[idx++] =
|
|
cpu_to_le16((s16)(mvm->tz_device.trips[i].temperature / 1000));
|
|
}
|
|
}
|
|
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 ((int)(le16_to_cpu(cmd.thresholds[i]) * 1000) ==
|
|
mvm->tz_device.trips[j].temperature)
|
|
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_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 ret;
|
|
|
|
mutex_lock(&mvm->mutex);
|
|
|
|
if (!iwl_mvm_firmware_running(mvm) ||
|
|
mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR) {
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
if ((temp / 1000) > S16_MAX) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
tzone = &mvm->tz_device;
|
|
if (!tzone) {
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
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,
|
|
.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, ret;
|
|
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_with_trips(name,
|
|
mvm->tz_device.trips,
|
|
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;
|
|
}
|
|
|
|
ret = thermal_zone_device_enable(mvm->tz_device.tzone);
|
|
if (ret) {
|
|
IWL_DEBUG_TEMP(mvm, "Failed to enable thermal zone\n");
|
|
thermal_zone_device_unregister(mvm->tz_device.tzone);
|
|
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.trips[i].temperature = INT_MIN;
|
|
mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|