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-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/tt.c908
1 files changed, 908 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
new file mode 100644
index 000000000..69cf3a372
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c
@@ -0,0 +1,908 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2012-2014, 2019-2021 Intel Corporation
+ * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
+ * Copyright (C) 2015-2016 Intel Deutschland GmbH
+ */
+#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);
+}
+
+static 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_zone_device_update(tz_dev->tzone,
+ THERMAL_TRIP_VIOLATED);
+ }
+#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;
+
+ notif = (struct ct_kill_notif *)pkt->data;
+ IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n",
+ notif->temperature);
+ if (iwl_fw_lookup_notif_ver(mvm->fw, PHY_OPS_GROUP,
+ CT_KILL_NOTIFICATION, 0) > 1)
+ IWL_DEBUG_TEMP(mvm,
+ "CT kill notification DTS bitmap = 0x%x, Scheme = %d\n",
+ notif->dts, notif->scheme);
+
+ iwl_mvm_enter_ctkill(mvm);
+}
+
+/*
+ * send the DTS_MEASUREMENT_TRIGGER command with or without waiting for a
+ * response. If we get a response then the measurement is stored in 'temp'
+ */
+static int iwl_mvm_send_temp_cmd(struct iwl_mvm *mvm, bool response, s32 *temp)
+{
+ struct iwl_host_cmd cmd = {};
+ struct iwl_dts_measurement_cmd dts_cmd = {
+ .flags = cpu_to_le32(DTS_TRIGGER_CMD_FLAGS_TEMP),
+ };
+ struct iwl_ext_dts_measurement_cmd ext_cmd = {
+ .control_mode = cpu_to_le32(DTS_DIRECT_WITHOUT_MEASURE),
+ };
+ struct iwl_dts_measurement_resp *resp;
+ void *cmd_ptr;
+ int ret;
+ u32 cmd_flags = 0;
+ u16 len;
+
+ /* Check which command format is used (regular/extended) */
+ if (fw_has_capa(&mvm->fw->ucode_capa,
+ IWL_UCODE_TLV_CAPA_EXTENDED_DTS_MEASURE)) {
+ len = sizeof(ext_cmd);
+ cmd_ptr = &ext_cmd;
+ } else {
+ len = sizeof(dts_cmd);
+ cmd_ptr = &dts_cmd;
+ }
+ /* The command version where we get a response is zero length */
+ if (response) {
+ cmd_flags = CMD_WANT_SKB;
+ len = 0;
+ }
+
+ cmd.id = WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE);
+ cmd.len[0] = len;
+ cmd.flags = cmd_flags;
+ cmd.data[0] = cmd_ptr;
+
+ IWL_DEBUG_TEMP(mvm,
+ "Sending temperature measurement command - %s response\n",
+ response ? "with" : "without");
+ ret = iwl_mvm_send_cmd(mvm, &cmd);
+
+ if (ret) {
+ IWL_ERR(mvm,
+ "Failed to send the temperature measurement command (err=%d)\n",
+ ret);
+ return ret;
+ }
+
+ if (response) {
+ resp = (void *)cmd.resp_pkt->data;
+ *temp = le32_to_cpu(resp->temp);
+ IWL_DEBUG_TEMP(mvm,
+ "Got temperature measurement response: temp=%d\n",
+ *temp);
+ iwl_free_resp(&cmd);
+ }
+
+ return ret;
+}
+
+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;
+ u8 cmd_ver;
+
+ /*
+ * If command version is 1 we send the command and immediately get
+ * a response. For older versions we send the command and wait for a
+ * notification (no command TLV for previous versions).
+ */
+ cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
+ WIDE_ID(PHY_OPS_GROUP, CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
+ IWL_FW_CMD_VER_UNKNOWN);
+ if (cmd_ver == 1)
+ return iwl_mvm_send_temp_cmd(mvm, true, temp);
+
+ 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_send_temp_cmd(mvm, false, temp);
+ if (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_WARN(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;
+
+ flush_work(&mvm->roc_done_wk);
+
+ 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 < mvm->fw->ucode_capa.num_stations; 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[] = {
+ 2400, /* cooling state 0 */
+ 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 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, 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(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;
+ }
+
+ 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.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;
+}