diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/tt.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/tt.c | 460 |
1 files changed, 0 insertions, 460 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/tt.c b/drivers/net/wireless/iwlwifi/mvm/tt.c deleted file mode 100644 index cadfc0460597..000000000000 --- a/drivers/net/wireless/iwlwifi/mvm/tt.c +++ /dev/null @@ -1,460 +0,0 @@ -/****************************************************************************** - * - * 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 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, - * USA - * - * The full GNU General Public License is included in this distribution - * in the file called COPYING. - * - * Contact Information: - * Intel Linux Wireless <ilw@linux.intel.com> - * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - * - * BSD LICENSE - * - * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. - * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * Copyright(c) 2015 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 "mvm.h" - -#define IWL_MVM_TEMP_NOTIF_WAIT_TIMEOUT HZ - -static 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); - - 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 *notif; - int len = iwl_rx_packet_payload_len(pkt); - int temp; - - if (WARN_ON_ONCE(len != sizeof(*notif))) { - IWL_ERR(mvm, "Invalid DTS_MEASUREMENT_NOTIFICATION\n"); - return -EINVAL; - } - - notif = (void *)pkt->data; - - temp = le32_to_cpu(notif->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); - int temp; - - /* 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 (temp < 0) - return; - - iwl_mvm_tt_temp_changed(mvm, temp); -} - -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; - - if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR)) - cmdid = iwl_cmd_id(CMD_DTS_MEASUREMENT_TRIGGER_WIDE, - PHY_OPS_GROUP, 0); - else - cmdid = CMD_DTS_MEASUREMENT_TRIGGER; - - 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) -{ - struct iwl_notification_wait wait_temp_notif; - static u16 temp_notif[] = { WIDE_ID(PHY_OPS_GROUP, - DTS_MEASUREMENT_NOTIF_WIDE) }; - int ret, temp; - - if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_WIDE_CMD_HDR)) - temp_notif[0] = DTS_MEASUREMENT_NOTIFICATION; - - 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; - } - - return temp; -} - -static void check_exit_ctkill(struct work_struct *work) -{ - struct iwl_mvm_tt_mgmt *tt; - struct iwl_mvm *mvm; - u32 duration; - s32 temp; - - tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work); - mvm = container_of(tt, struct iwl_mvm, thermal_throttle); - - 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; - } - - temp = iwl_mvm_get_temp(mvm); - - iwl_mvm_unref(mvm, IWL_MVM_REF_CHECK_CTKILL); - - __iwl_mvm_mac_stop(mvm); - - if (temp < 0) - 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 ieee80211_sta *sta; - struct iwl_mvm_sta *mvmsta; - int i, err; - - for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { - sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], - lockdep_is_held(&mvm->mutex)); - if (IS_ERR_OR_NULL(sta)) - continue; - mvmsta = iwl_mvm_sta_from_mac80211(sta); - 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, -}; - -void iwl_mvm_tt_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); -} - -void iwl_mvm_tt_exit(struct iwl_mvm *mvm) -{ - cancel_delayed_work_sync(&mvm->thermal_throttle.ct_kill_exit); - IWL_DEBUG_TEMP(mvm, "Exit Thermal Throttling\n"); -} |