/****************************************************************************** * * 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) 2012 - 2013 Intel Corporation. All rights reserved. * * 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * 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 #include #include #include #include #include "iwl-debug.h" #include "mvm.h" #include "iwl-modparams.h" #include "fw-api-power.h" #define POWER_KEEP_ALIVE_PERIOD_SEC 25 static void iwl_mvm_power_log(struct iwl_mvm *mvm, struct iwl_powertable_cmd *cmd) { IWL_DEBUG_POWER(mvm, "Sending power table command for power level %d, flags = 0x%X\n", iwlmvm_mod_params.power_scheme, le16_to_cpu(cmd->flags)); IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n", cmd->keep_alive_seconds); if (cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)) { IWL_DEBUG_POWER(mvm, "Rx timeout = %u usec\n", le32_to_cpu(cmd->rx_data_timeout)); IWL_DEBUG_POWER(mvm, "Tx timeout = %u usec\n", le32_to_cpu(cmd->tx_data_timeout)); if (cmd->flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) IWL_DEBUG_POWER(mvm, "DTIM periods to skip = %u\n", le32_to_cpu(cmd->skip_dtim_periods)); if (cmd->flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) IWL_DEBUG_POWER(mvm, "LP RX RSSI threshold = %u\n", le32_to_cpu(cmd->lprx_rssi_threshold)); } } static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_powertable_cmd *cmd) { struct ieee80211_hw *hw = mvm->hw; struct ieee80211_chanctx_conf *chanctx_conf; struct ieee80211_channel *chan; int dtimper, dtimper_msec; int keep_alive; bool radar_detect = false; struct iwl_mvm_vif *mvmvif __maybe_unused = iwl_mvm_vif_from_mac80211(vif); /* * Regardless of power management state the driver must set * keep alive period. FW will use it for sending keep alive NDPs * immediately after association. */ cmd->keep_alive_seconds = POWER_KEEP_ALIVE_PERIOD_SEC; if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM) return; cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); if (!vif->bss_conf.assoc) cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); #ifdef CONFIG_IWLWIFI_DEBUGFS if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_DISABLE_POWER_OFF && mvmvif->dbgfs_pm.disable_power_off) cmd->flags &= cpu_to_le16(~POWER_FLAGS_POWER_SAVE_ENA_MSK); #endif if (!vif->bss_conf.ps) return; cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK); if (vif->bss_conf.beacon_rate && (vif->bss_conf.beacon_rate->bitrate == 10 || vif->bss_conf.beacon_rate->bitrate == 60)) { cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); cmd->lprx_rssi_threshold = cpu_to_le32(POWER_LPRX_RSSI_THRESHOLD); } dtimper = hw->conf.ps_dtim_period ?: 1; /* Check if radar detection is required on current channel */ rcu_read_lock(); chanctx_conf = rcu_dereference(vif->chanctx_conf); WARN_ON(!chanctx_conf); if (chanctx_conf) { chan = chanctx_conf->def.chan; radar_detect = chan->flags & IEEE80211_CHAN_RADAR; } rcu_read_unlock(); /* Check skip over DTIM conditions */ if (!radar_detect && (dtimper <= 10) && (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_LP || mvm->cur_ucode == IWL_UCODE_WOWLAN)) { cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); cmd->skip_dtim_periods = cpu_to_le32(3); } /* Check that keep alive period is at least 3 * DTIM */ dtimper_msec = dtimper * vif->bss_conf.beacon_int; keep_alive = max_t(int, 3 * dtimper_msec, MSEC_PER_SEC * cmd->keep_alive_seconds); keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC); cmd->keep_alive_seconds = keep_alive; if (mvm->cur_ucode != IWL_UCODE_WOWLAN) { cmd->rx_data_timeout = cpu_to_le32(100 * USEC_PER_MSEC); cmd->tx_data_timeout = cpu_to_le32(100 * USEC_PER_MSEC); } else { cmd->rx_data_timeout = cpu_to_le32(10 * USEC_PER_MSEC); cmd->tx_data_timeout = cpu_to_le32(10 * USEC_PER_MSEC); } #ifdef CONFIG_IWLWIFI_DEBUGFS if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE) cmd->keep_alive_seconds = mvmvif->dbgfs_pm.keep_alive_seconds; if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_OVER_DTIM) { if (mvmvif->dbgfs_pm.skip_over_dtim) cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK); else cmd->flags &= cpu_to_le16(~POWER_FLAGS_SKIP_OVER_DTIM_MSK); } if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_RX_DATA_TIMEOUT) cmd->rx_data_timeout = cpu_to_le32(mvmvif->dbgfs_pm.rx_data_timeout); if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_TX_DATA_TIMEOUT) cmd->tx_data_timeout = cpu_to_le32(mvmvif->dbgfs_pm.tx_data_timeout); if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS) cmd->skip_dtim_periods = cpu_to_le32(mvmvif->dbgfs_pm.skip_dtim_periods); if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_ENA) { if (mvmvif->dbgfs_pm.lprx_ena) cmd->flags |= cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK); else cmd->flags &= cpu_to_le16(~POWER_FLAGS_LPRX_ENA_MSK); } if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD) cmd->lprx_rssi_threshold = cpu_to_le32(mvmvif->dbgfs_pm.lprx_rssi_threshold); #endif /* CONFIG_IWLWIFI_DEBUGFS */ } static int iwl_mvm_power_legacy_update_mode(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { int ret; bool ba_enable; struct iwl_powertable_cmd cmd = {}; if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) return 0; /* * TODO: The following vif_count verification is temporary condition. * Avoid power mode update if more than one interface is currently * active. Remove this condition when FW will support power management * on multiple MACs. */ IWL_DEBUG_POWER(mvm, "Currently %d interfaces active\n", mvm->vif_count); if (mvm->vif_count > 1) return 0; iwl_mvm_power_build_cmd(mvm, vif, &cmd); iwl_mvm_power_log(mvm, &cmd); ret = iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_SYNC, sizeof(cmd), &cmd); if (ret) return ret; ba_enable = !!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)); return iwl_mvm_update_beacon_abort(mvm, vif, ba_enable); } static int iwl_mvm_power_legacy_disable(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_powertable_cmd cmd = {}; struct iwl_mvm_vif *mvmvif __maybe_unused = iwl_mvm_vif_from_mac80211(vif); if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) return 0; if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) cmd.flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK); #ifdef CONFIG_IWLWIFI_DEBUGFS if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_DISABLE_POWER_OFF && mvmvif->dbgfs_pm.disable_power_off) cmd.flags &= cpu_to_le16(~POWER_FLAGS_POWER_SAVE_ENA_MSK); #endif iwl_mvm_power_log(mvm, &cmd); return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, CMD_ASYNC, sizeof(cmd), &cmd); } #ifdef CONFIG_IWLWIFI_DEBUGFS static int iwl_mvm_power_legacy_dbgfs_read(struct iwl_mvm *mvm, struct ieee80211_vif *vif, char *buf, int bufsz) { struct iwl_powertable_cmd cmd = {}; int pos = 0; iwl_mvm_power_build_cmd(mvm, vif, &cmd); pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off = %d\n", (cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK)) ? 0 : 1); pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", le32_to_cpu(cmd.skip_dtim_periods)); pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", iwlmvm_mod_params.power_scheme); pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", le16_to_cpu(cmd.flags)); pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", cmd.keep_alive_seconds); if (cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)) { pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", (cmd.flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", le32_to_cpu(cmd.rx_data_timeout)); pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", le32_to_cpu(cmd.tx_data_timeout)); if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) pos += scnprintf(buf+pos, bufsz-pos, "lprx_rssi_threshold = %d\n", le32_to_cpu(cmd.lprx_rssi_threshold)); } return pos; } #endif const struct iwl_mvm_power_ops pm_legacy_ops = { .power_update_mode = iwl_mvm_power_legacy_update_mode, .power_disable = iwl_mvm_power_legacy_disable, #ifdef CONFIG_IWLWIFI_DEBUGFS .power_dbgfs_read = iwl_mvm_power_legacy_dbgfs_read, #endif };