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fuchsia / drivers / wlan / intel / iwlwifi / 4de0dbb8e99536af8ca65e3eca1b0d73ce1bfeed / . / third_party / iwlwifi / mvm / tt.c
blob: 9606a47f6634201a51e57435660efff160c94f03 [file] [log] [blame]
/******************************************************************************
*
* Copyright(c) 2012 - 2014 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 "src/iwlwifi/mvm/mvm.h"
#if 0 // NEEDS_PORTING
#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;
uint32_t 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, uint32_t 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 int32_t, 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;
uint32_t 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),
};
uint32_t 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, int32_t* temp) {
struct iwl_notification_wait wait_temp_notif;
static uint16_t temp_notif[] = {WIDE_ID(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE)};
int ret;
iwl_assert_lock_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;
uint32_t duration;
int32_t 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; }
/* make sure the device is available for direct read/writes */
if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_CHECK_CTKILL)) {
__iwl_mvm_mac_stop(mvm);
goto reschedule;
}
ret = iwl_mvm_get_temp(mvm, &temp);
iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL);
__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, uint8_t* mac, struct ieee80211_vif* vif) {
struct iwl_mvm* mvm = _data;
enum ieee80211_smps_mode smps_mode;
iwl_assert_lock_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;
}
}
}
#endif // NEEDS_PORTING
void iwl_mvm_tt_tx_backoff(struct iwl_mvm* mvm, uint32_t backoff) {
struct iwl_host_cmd cmd = {
.id = REPLY_THERMAL_MNG_BACKOFF,
.len =
{
sizeof(uint32_t),
},
.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");
}
}
#if 0 // NEEDS_PORTING
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;
int32_t temperature = mvm->temperature;
bool throttle_enable = false;
int i;
uint32_t 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 uint32_t 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, uint32_t op, uint32_t 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;
uint32_t status;
iwl_assert_lock_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 ((int16_t)le16_to_cpu(*(__le16*)a) - (int16_t)le16_to_cpu(*(__le16*)b));
}
int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm* mvm) {
struct temp_report_ths_cmd cmd = {0};
int ret, i, j, idx = 0;
iwl_assert_lock_held(&mvm->mutex);
if (!mvm->tz_device.tzone) { return -EINVAL; }
/* 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(int16_t), 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:
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;
}
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;
int16_t 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 = (int16_t)(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[] = "iwlwifi";
if (!iwl_mvm_is_tt_in_fw(mvm)) {
mvm->tz_device.tzone = NULL;
return;
}
BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH);
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 */
#endif // NEEDS_PORTING
void iwl_mvm_thermal_initialize(struct iwl_mvm* mvm, uint32_t min_backoff) {
#if 0 // NEEDS_PORTING
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;
#endif // NEEDS_PORTING
}
void iwl_mvm_thermal_exit(struct iwl_mvm* mvm) {
if (!(mvm->init_status & IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE)) {
return;
}
#if 0 // NEEDS_PORTING
cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit);
IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n");
#endif // NEEDS_PORTING
#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;
}