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tegrakernel/kernel/kernel-4.9/drivers/net/wireless/intel/iwlwifi/mvm/power.c

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/******************************************************************************
*
* 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 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright(c) 2015 - 2016 Intel Deutschland 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 <linuxwifi@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 - 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 <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/etherdevice.h>
#include <net/mac80211.h>
#include "iwl-debug.h"
#include "mvm.h"
#include "iwl-modparams.h"
#include "fw-api-power.h"
#define POWER_KEEP_ALIVE_PERIOD_SEC 25
static
int iwl_mvm_beacon_filter_send_cmd(struct iwl_mvm *mvm,
struct iwl_beacon_filter_cmd *cmd,
u32 flags)
{
IWL_DEBUG_POWER(mvm, "ba_enable_beacon_abort is: %d\n",
le32_to_cpu(cmd->ba_enable_beacon_abort));
IWL_DEBUG_POWER(mvm, "ba_escape_timer is: %d\n",
le32_to_cpu(cmd->ba_escape_timer));
IWL_DEBUG_POWER(mvm, "bf_debug_flag is: %d\n",
le32_to_cpu(cmd->bf_debug_flag));
IWL_DEBUG_POWER(mvm, "bf_enable_beacon_filter is: %d\n",
le32_to_cpu(cmd->bf_enable_beacon_filter));
IWL_DEBUG_POWER(mvm, "bf_energy_delta is: %d\n",
le32_to_cpu(cmd->bf_energy_delta));
IWL_DEBUG_POWER(mvm, "bf_escape_timer is: %d\n",
le32_to_cpu(cmd->bf_escape_timer));
IWL_DEBUG_POWER(mvm, "bf_roaming_energy_delta is: %d\n",
le32_to_cpu(cmd->bf_roaming_energy_delta));
IWL_DEBUG_POWER(mvm, "bf_roaming_state is: %d\n",
le32_to_cpu(cmd->bf_roaming_state));
IWL_DEBUG_POWER(mvm, "bf_temp_threshold is: %d\n",
le32_to_cpu(cmd->bf_temp_threshold));
IWL_DEBUG_POWER(mvm, "bf_temp_fast_filter is: %d\n",
le32_to_cpu(cmd->bf_temp_fast_filter));
IWL_DEBUG_POWER(mvm, "bf_temp_slow_filter is: %d\n",
le32_to_cpu(cmd->bf_temp_slow_filter));
return iwl_mvm_send_cmd_pdu(mvm, REPLY_BEACON_FILTERING_CMD, flags,
sizeof(struct iwl_beacon_filter_cmd), cmd);
}
static
void iwl_mvm_beacon_filter_set_cqm_params(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_beacon_filter_cmd *cmd,
bool d0i3)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif->bss_conf.cqm_rssi_thold && !d0i3) {
cmd->bf_energy_delta =
cpu_to_le32(vif->bss_conf.cqm_rssi_hyst);
/* fw uses an absolute value for this */
cmd->bf_roaming_state =
cpu_to_le32(-vif->bss_conf.cqm_rssi_thold);
}
cmd->ba_enable_beacon_abort = cpu_to_le32(mvmvif->bf_data.ba_enabled);
}
static void iwl_mvm_power_log(struct iwl_mvm *mvm,
struct iwl_mac_power_cmd *cmd)
{
IWL_DEBUG_POWER(mvm,
"Sending power table command on mac id 0x%X for power level %d, flags = 0x%X\n",
cmd->id_and_color, iwlmvm_mod_params.power_scheme,
le16_to_cpu(cmd->flags));
IWL_DEBUG_POWER(mvm, "Keep alive = %u sec\n",
le16_to_cpu(cmd->keep_alive_seconds));
if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK))) {
IWL_DEBUG_POWER(mvm, "Disable power management\n");
return;
}
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",
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",
cmd->lprx_rssi_threshold);
if (cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)) {
IWL_DEBUG_POWER(mvm, "uAPSD enabled\n");
IWL_DEBUG_POWER(mvm, "Rx timeout (uAPSD) = %u usec\n",
le32_to_cpu(cmd->rx_data_timeout_uapsd));
IWL_DEBUG_POWER(mvm, "Tx timeout (uAPSD) = %u usec\n",
le32_to_cpu(cmd->tx_data_timeout_uapsd));
IWL_DEBUG_POWER(mvm, "QNDP TID = %d\n", cmd->qndp_tid);
IWL_DEBUG_POWER(mvm, "ACs flags = 0x%x\n", cmd->uapsd_ac_flags);
IWL_DEBUG_POWER(mvm, "Max SP = %d\n", cmd->uapsd_max_sp);
}
}
static void iwl_mvm_power_configure_uapsd(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_mac_power_cmd *cmd)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
enum ieee80211_ac_numbers ac;
bool tid_found = false;
for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_BK; ac++) {
if (!mvmvif->queue_params[ac].uapsd)
continue;
if (mvm->cur_ucode != IWL_UCODE_WOWLAN)
cmd->flags |=
cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
cmd->uapsd_ac_flags |= BIT(ac);
/* QNDP TID - the highest TID with no admission control */
if (!tid_found && !mvmvif->queue_params[ac].acm) {
tid_found = true;
switch (ac) {
case IEEE80211_AC_VO:
cmd->qndp_tid = 6;
break;
case IEEE80211_AC_VI:
cmd->qndp_tid = 5;
break;
case IEEE80211_AC_BE:
cmd->qndp_tid = 0;
break;
case IEEE80211_AC_BK:
cmd->qndp_tid = 1;
break;
}
}
}
if (!(cmd->flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
#ifdef CONFIG_IWLWIFI_DEBUGFS
/* set advanced pm flag with no uapsd ACs to enable ps-poll */
if (mvmvif->dbgfs_pm.use_ps_poll)
cmd->flags |=
cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK);
#endif
return;
}
cmd->flags |= cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK);
if (cmd->uapsd_ac_flags == (BIT(IEEE80211_AC_VO) |
BIT(IEEE80211_AC_VI) |
BIT(IEEE80211_AC_BE) |
BIT(IEEE80211_AC_BK))) {
cmd->flags |= cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
cmd->snooze_interval = cpu_to_le16(IWL_MVM_PS_SNOOZE_INTERVAL);
cmd->snooze_window = (mvm->cur_ucode == IWL_UCODE_WOWLAN) ?
cpu_to_le16(IWL_MVM_WOWLAN_PS_SNOOZE_WINDOW) :
cpu_to_le16(IWL_MVM_PS_SNOOZE_WINDOW);
}
cmd->uapsd_max_sp = mvm->hw->uapsd_max_sp_len;
if (mvm->cur_ucode == IWL_UCODE_WOWLAN || cmd->flags &
cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
cmd->rx_data_timeout_uapsd =
cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
cmd->tx_data_timeout_uapsd =
cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
} else {
cmd->rx_data_timeout_uapsd =
cpu_to_le32(IWL_MVM_UAPSD_RX_DATA_TIMEOUT);
cmd->tx_data_timeout_uapsd =
cpu_to_le32(IWL_MVM_UAPSD_TX_DATA_TIMEOUT);
}
if (cmd->flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)) {
cmd->heavy_tx_thld_packets =
IWL_MVM_PS_SNOOZE_HEAVY_TX_THLD_PACKETS;
cmd->heavy_rx_thld_packets =
IWL_MVM_PS_SNOOZE_HEAVY_RX_THLD_PACKETS;
} else {
cmd->heavy_tx_thld_packets =
IWL_MVM_PS_HEAVY_TX_THLD_PACKETS;
cmd->heavy_rx_thld_packets =
IWL_MVM_PS_HEAVY_RX_THLD_PACKETS;
}
cmd->heavy_tx_thld_percentage =
IWL_MVM_PS_HEAVY_TX_THLD_PERCENT;
cmd->heavy_rx_thld_percentage =
IWL_MVM_PS_HEAVY_RX_THLD_PERCENT;
}
static void iwl_mvm_p2p_standalone_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
bool *is_p2p_standalone = _data;
switch (ieee80211_vif_type_p2p(vif)) {
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_AP:
*is_p2p_standalone = false;
break;
case NL80211_IFTYPE_STATION:
if (vif->bss_conf.assoc)
*is_p2p_standalone = false;
break;
default:
break;
}
}
static bool iwl_mvm_power_allow_uapsd(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (!memcmp(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
ETH_ALEN))
return false;
/*
* Avoid using uAPSD if P2P client is associated to GO that uses
* opportunistic power save. This is due to current FW limitation.
*/
if (vif->p2p &&
(vif->bss_conf.p2p_noa_attr.oppps_ctwindow &
IEEE80211_P2P_OPPPS_ENABLE_BIT))
return false;
/*
* Avoid using uAPSD if client is in DCM -
* low latency issue in Miracast
*/
if (iwl_mvm_phy_ctx_count(mvm) >= 2)
return false;
if (vif->p2p) {
/* Allow U-APSD only if p2p is stand alone */
bool is_p2p_standalone = true;
if (!iwl_mvm_is_p2p_scm_uapsd_supported(mvm))
return false;
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_p2p_standalone_iterator,
&is_p2p_standalone);
if (!is_p2p_standalone)
return false;
}
return true;
}
static bool iwl_mvm_power_is_radar(struct ieee80211_vif *vif)
{
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_channel *chan;
bool radar_detect = false;
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();
return radar_detect;
}
static void iwl_mvm_power_config_skip_dtim(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_mac_power_cmd *cmd,
bool host_awake)
{
int dtimper = vif->bss_conf.dtim_period ?: 1;
int skip;
/* disable, in case we're supposed to override */
cmd->skip_dtim_periods = 0;
cmd->flags &= ~cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
if (iwl_mvm_power_is_radar(vif))
return;
if (dtimper >= 10)
return;
/* TODO: check that multicast wake lock is off */
if (host_awake) {
if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_LP)
return;
skip = 2;
} else {
int dtimper_tu = dtimper * vif->bss_conf.beacon_int;
if (WARN_ON(!dtimper_tu))
return;
/* configure skip over dtim up to 306TU - 314 msec */
skip = max_t(u8, 1, 306 / dtimper_tu);
}
/* the firmware really expects "look at every X DTIMs", so add 1 */
cmd->skip_dtim_periods = 1 + skip;
cmd->flags |= cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK);
}
static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_mac_power_cmd *cmd,
bool host_awake)
{
int dtimper, bi;
int keep_alive;
struct iwl_mvm_vif *mvmvif __maybe_unused =
iwl_mvm_vif_from_mac80211(vif);
cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
mvmvif->color));
dtimper = vif->bss_conf.dtim_period;
bi = vif->bss_conf.beacon_int;
/*
* Regardless of power management state the driver must set
* keep alive period. FW will use it for sending keep alive NDPs
* immediately after association. Check that keep alive period
* is at least 3 * DTIM
*/
keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi),
USEC_PER_SEC);
keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC);
cmd->keep_alive_seconds = cpu_to_le16(keep_alive);
if (mvm->ps_disabled)
return;
cmd->flags |= cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK);
if (!vif->bss_conf.ps || !mvmvif->pm_enabled)
return;
if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
(!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS) ||
!IWL_MVM_P2P_LOWLATENCY_PS_ENABLE))
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 = POWER_LPRX_RSSI_THRESHOLD;
}
iwl_mvm_power_config_skip_dtim(mvm, vif, cmd, host_awake);
if (!host_awake) {
cmd->rx_data_timeout =
cpu_to_le32(IWL_MVM_WOWLAN_PS_RX_DATA_TIMEOUT);
cmd->tx_data_timeout =
cpu_to_le32(IWL_MVM_WOWLAN_PS_TX_DATA_TIMEOUT);
} else if (iwl_mvm_vif_low_latency(mvmvif) && vif->p2p &&
fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_SHORT_PM_TIMEOUTS)) {
cmd->tx_data_timeout =
cpu_to_le32(IWL_MVM_SHORT_PS_TX_DATA_TIMEOUT);
cmd->rx_data_timeout =
cpu_to_le32(IWL_MVM_SHORT_PS_RX_DATA_TIMEOUT);
} else {
cmd->rx_data_timeout =
cpu_to_le32(IWL_MVM_DEFAULT_PS_RX_DATA_TIMEOUT);
cmd->tx_data_timeout =
cpu_to_le32(IWL_MVM_DEFAULT_PS_TX_DATA_TIMEOUT);
}
if (iwl_mvm_power_allow_uapsd(mvm, vif))
iwl_mvm_power_configure_uapsd(mvm, vif, cmd);
#ifdef CONFIG_IWLWIFI_DEBUGFS
if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_KEEP_ALIVE)
cmd->keep_alive_seconds =
cpu_to_le16(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 = 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 = mvmvif->dbgfs_pm.lprx_rssi_threshold;
if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_SNOOZE_ENABLE) {
if (mvmvif->dbgfs_pm.snooze_ena)
cmd->flags |=
cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK);
else
cmd->flags &=
cpu_to_le16(~POWER_FLAGS_SNOOZE_ENA_MSK);
}
if (mvmvif->dbgfs_pm.mask & MVM_DEBUGFS_PM_UAPSD_MISBEHAVING) {
u16 flag = POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK;
if (mvmvif->dbgfs_pm.uapsd_misbehaving)
cmd->flags |= cpu_to_le16(flag);
else
cmd->flags &= cpu_to_le16(flag);
}
#endif /* CONFIG_IWLWIFI_DEBUGFS */
}
static int iwl_mvm_power_send_cmd(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mac_power_cmd cmd = {};
iwl_mvm_power_build_cmd(mvm, vif, &cmd,
mvm->cur_ucode != IWL_UCODE_WOWLAN);
iwl_mvm_power_log(mvm, &cmd);
#ifdef CONFIG_IWLWIFI_DEBUGFS
memcpy(&iwl_mvm_vif_from_mac80211(vif)->mac_pwr_cmd, &cmd, sizeof(cmd));
#endif
return iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, 0,
sizeof(cmd), &cmd);
}
int iwl_mvm_power_update_device(struct iwl_mvm *mvm)
{
struct iwl_device_power_cmd cmd = {
.flags = 0,
};
if (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM)
mvm->ps_disabled = true;
if (!mvm->ps_disabled)
cmd.flags |= cpu_to_le16(DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
#ifdef CONFIG_IWLWIFI_DEBUGFS
if ((mvm->cur_ucode == IWL_UCODE_WOWLAN) ? mvm->disable_power_off_d3 :
mvm->disable_power_off)
cmd.flags &=
cpu_to_le16(~DEVICE_POWER_FLAGS_POWER_SAVE_ENA_MSK);
#endif
IWL_DEBUG_POWER(mvm,
"Sending device power command with flags = 0x%X\n",
cmd.flags);
return iwl_mvm_send_cmd_pdu(mvm, POWER_TABLE_CMD, 0, sizeof(cmd),
&cmd);
}
void iwl_mvm_power_vif_assoc(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (memcmp(vif->bss_conf.bssid, mvmvif->uapsd_misbehaving_bssid,
ETH_ALEN))
eth_zero_addr(mvmvif->uapsd_misbehaving_bssid);
}
static void iwl_mvm_power_uapsd_misbehav_ap_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
u8 *ap_sta_id = _data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
/* The ap_sta_id is not expected to change during current association
* so no explicit protection is needed
*/
if (mvmvif->ap_sta_id == *ap_sta_id)
memcpy(mvmvif->uapsd_misbehaving_bssid, vif->bss_conf.bssid,
ETH_ALEN);
}
void iwl_mvm_power_uapsd_misbehaving_ap_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
u8 ap_sta_id = le32_to_cpu(notif->sta_id);
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_uapsd_misbehav_ap_iterator, &ap_sta_id);
}
struct iwl_power_vifs {
struct iwl_mvm *mvm;
struct ieee80211_vif *bss_vif;
struct ieee80211_vif *p2p_vif;
struct ieee80211_vif *ap_vif;
struct ieee80211_vif *monitor_vif;
bool p2p_active;
bool bss_active;
bool ap_active;
bool monitor_active;
};
static void iwl_mvm_power_disable_pm_iterator(void *_data, u8* mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
mvmvif->pm_enabled = false;
}
static void iwl_mvm_power_ps_disabled_iterator(void *_data, u8* mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
bool *disable_ps = _data;
if (mvmvif->phy_ctxt)
if (mvmvif->phy_ctxt->id < MAX_PHYS)
*disable_ps |= mvmvif->ps_disabled;
}
static void iwl_mvm_power_get_vifs_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_power_vifs *power_iterator = _data;
switch (ieee80211_vif_type_p2p(vif)) {
case NL80211_IFTYPE_P2P_DEVICE:
break;
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_AP:
/* only a single MAC of the same type */
WARN_ON(power_iterator->ap_vif);
power_iterator->ap_vif = vif;
if (mvmvif->phy_ctxt)
if (mvmvif->phy_ctxt->id < MAX_PHYS)
power_iterator->ap_active = true;
break;
case NL80211_IFTYPE_MONITOR:
/* only a single MAC of the same type */
WARN_ON(power_iterator->monitor_vif);
power_iterator->monitor_vif = vif;
if (mvmvif->phy_ctxt)
if (mvmvif->phy_ctxt->id < MAX_PHYS)
power_iterator->monitor_active = true;
break;
case NL80211_IFTYPE_P2P_CLIENT:
/* only a single MAC of the same type */
WARN_ON(power_iterator->p2p_vif);
power_iterator->p2p_vif = vif;
if (mvmvif->phy_ctxt)
if (mvmvif->phy_ctxt->id < MAX_PHYS)
power_iterator->p2p_active = true;
break;
case NL80211_IFTYPE_STATION:
power_iterator->bss_vif = vif;
if (mvmvif->phy_ctxt)
if (mvmvif->phy_ctxt->id < MAX_PHYS)
power_iterator->bss_active = true;
break;
default:
break;
}
}
static void iwl_mvm_power_set_pm(struct iwl_mvm *mvm,
struct iwl_power_vifs *vifs)
{
struct iwl_mvm_vif *bss_mvmvif = NULL;
struct iwl_mvm_vif *p2p_mvmvif = NULL;
struct iwl_mvm_vif *ap_mvmvif = NULL;
bool client_same_channel = false;
bool ap_same_channel = false;
lockdep_assert_held(&mvm->mutex);
/* set pm_enable to false */
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_disable_pm_iterator,
NULL);
if (vifs->bss_vif)
bss_mvmvif = iwl_mvm_vif_from_mac80211(vifs->bss_vif);
if (vifs->p2p_vif)
p2p_mvmvif = iwl_mvm_vif_from_mac80211(vifs->p2p_vif);
if (vifs->ap_vif)
ap_mvmvif = iwl_mvm_vif_from_mac80211(vifs->ap_vif);
/* don't allow PM if any TDLS stations exist */
if (iwl_mvm_tdls_sta_count(mvm, NULL))
return;
/* enable PM on bss if bss stand alone */
if (vifs->bss_active && !vifs->p2p_active && !vifs->ap_active) {
bss_mvmvif->pm_enabled = true;
return;
}
/* enable PM on p2p if p2p stand alone */
if (vifs->p2p_active && !vifs->bss_active && !vifs->ap_active) {
p2p_mvmvif->pm_enabled = true;
return;
}
if (vifs->bss_active && vifs->p2p_active)
client_same_channel = (bss_mvmvif->phy_ctxt->id ==
p2p_mvmvif->phy_ctxt->id);
if (vifs->bss_active && vifs->ap_active)
ap_same_channel = (bss_mvmvif->phy_ctxt->id ==
ap_mvmvif->phy_ctxt->id);
/* clients are not stand alone: enable PM if DCM */
if (!(client_same_channel || ap_same_channel)) {
if (vifs->bss_active)
bss_mvmvif->pm_enabled = true;
if (vifs->p2p_active)
p2p_mvmvif->pm_enabled = true;
return;
}
/*
* There is only one channel in the system and there are only
* bss and p2p clients that share it
*/
if (client_same_channel && !vifs->ap_active) {
/* share same channel*/
bss_mvmvif->pm_enabled = true;
p2p_mvmvif->pm_enabled = true;
}
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
int iwl_mvm_power_mac_dbgfs_read(struct iwl_mvm *mvm,
struct ieee80211_vif *vif, char *buf,
int bufsz)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mac_power_cmd cmd = {};
int pos = 0;
mutex_lock(&mvm->mutex);
memcpy(&cmd, &mvmvif->mac_pwr_cmd, sizeof(cmd));
mutex_unlock(&mvm->mutex);
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",
le16_to_cpu(cmd.keep_alive_seconds));
if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)))
return pos;
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, "skip_dtim_periods = %d\n",
cmd.skip_dtim_periods);
if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK))) {
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",
cmd.lprx_rssi_threshold);
if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_ADVANCE_PM_ENA_MSK)))
return pos;
pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout_uapsd = %d\n",
le32_to_cpu(cmd.rx_data_timeout_uapsd));
pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout_uapsd = %d\n",
le32_to_cpu(cmd.tx_data_timeout_uapsd));
pos += scnprintf(buf+pos, bufsz-pos, "qndp_tid = %d\n", cmd.qndp_tid);
pos += scnprintf(buf+pos, bufsz-pos, "uapsd_ac_flags = 0x%x\n",
cmd.uapsd_ac_flags);
pos += scnprintf(buf+pos, bufsz-pos, "uapsd_max_sp = %d\n",
cmd.uapsd_max_sp);
pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_packets = %d\n",
cmd.heavy_tx_thld_packets);
pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_packets = %d\n",
cmd.heavy_rx_thld_packets);
pos += scnprintf(buf+pos, bufsz-pos, "heavy_tx_thld_percentage = %d\n",
cmd.heavy_tx_thld_percentage);
pos += scnprintf(buf+pos, bufsz-pos, "heavy_rx_thld_percentage = %d\n",
cmd.heavy_rx_thld_percentage);
pos += scnprintf(buf+pos, bufsz-pos, "uapsd_misbehaving_enable = %d\n",
(cmd.flags &
cpu_to_le16(POWER_FLAGS_UAPSD_MISBEHAVING_ENA_MSK)) ?
1 : 0);
if (!(cmd.flags & cpu_to_le16(POWER_FLAGS_SNOOZE_ENA_MSK)))
return pos;
pos += scnprintf(buf+pos, bufsz-pos, "snooze_interval = %d\n",
cmd.snooze_interval);
pos += scnprintf(buf+pos, bufsz-pos, "snooze_window = %d\n",
cmd.snooze_window);
return pos;
}
void
iwl_mvm_beacon_filter_debugfs_parameters(struct ieee80211_vif *vif,
struct iwl_beacon_filter_cmd *cmd)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf;
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ENERGY_DELTA)
cmd->bf_energy_delta = cpu_to_le32(dbgfs_bf->bf_energy_delta);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA)
cmd->bf_roaming_energy_delta =
cpu_to_le32(dbgfs_bf->bf_roaming_energy_delta);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ROAMING_STATE)
cmd->bf_roaming_state = cpu_to_le32(dbgfs_bf->bf_roaming_state);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_THRESHOLD)
cmd->bf_temp_threshold =
cpu_to_le32(dbgfs_bf->bf_temp_threshold);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_FAST_FILTER)
cmd->bf_temp_fast_filter =
cpu_to_le32(dbgfs_bf->bf_temp_fast_filter);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_TEMP_SLOW_FILTER)
cmd->bf_temp_slow_filter =
cpu_to_le32(dbgfs_bf->bf_temp_slow_filter);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_DEBUG_FLAG)
cmd->bf_debug_flag = cpu_to_le32(dbgfs_bf->bf_debug_flag);
if (dbgfs_bf->mask & MVM_DEBUGFS_BF_ESCAPE_TIMER)
cmd->bf_escape_timer = cpu_to_le32(dbgfs_bf->bf_escape_timer);
if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ESCAPE_TIMER)
cmd->ba_escape_timer = cpu_to_le32(dbgfs_bf->ba_escape_timer);
if (dbgfs_bf->mask & MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT)
cmd->ba_enable_beacon_abort =
cpu_to_le32(dbgfs_bf->ba_enable_beacon_abort);
}
#endif
static int _iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
struct iwl_beacon_filter_cmd *cmd,
u32 cmd_flags,
bool d0i3)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
if (mvmvif != mvm->bf_allowed_vif || !vif->bss_conf.dtim_period ||
vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return 0;
iwl_mvm_beacon_filter_set_cqm_params(mvm, vif, cmd, d0i3);
if (!d0i3)
iwl_mvm_beacon_filter_debugfs_parameters(vif, cmd);
ret = iwl_mvm_beacon_filter_send_cmd(mvm, cmd, cmd_flags);
/* don't change bf_enabled in case of temporary d0i3 configuration */
if (!ret && !d0i3)
mvmvif->bf_data.bf_enabled = true;
return ret;
}
int iwl_mvm_enable_beacon_filter(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
u32 flags)
{
struct iwl_beacon_filter_cmd cmd = {
IWL_BF_CMD_CONFIG_DEFAULTS,
.bf_enable_beacon_filter = cpu_to_le32(1),
};
return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, flags, false);
}
static int _iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
u32 flags, bool d0i3)
{
struct iwl_beacon_filter_cmd cmd = {};
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return 0;
ret = iwl_mvm_beacon_filter_send_cmd(mvm, &cmd, flags);
/* don't change bf_enabled in case of temporary d0i3 configuration */
if (!ret && !d0i3)
mvmvif->bf_data.bf_enabled = false;
return ret;
}
int iwl_mvm_disable_beacon_filter(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
u32 flags)
{
return _iwl_mvm_disable_beacon_filter(mvm, vif, flags, false);
}
static int iwl_mvm_power_set_ps(struct iwl_mvm *mvm)
{
bool disable_ps;
int ret;
/* disable PS if CAM */
disable_ps = (iwlmvm_mod_params.power_scheme == IWL_POWER_SCHEME_CAM);
/* ...or if any of the vifs require PS to be off */
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_ps_disabled_iterator,
&disable_ps);
/* update device power state if it has changed */
if (mvm->ps_disabled != disable_ps) {
bool old_ps_disabled = mvm->ps_disabled;
mvm->ps_disabled = disable_ps;
ret = iwl_mvm_power_update_device(mvm);
if (ret) {
mvm->ps_disabled = old_ps_disabled;
return ret;
}
}
return 0;
}
static int iwl_mvm_power_set_ba(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_beacon_filter_cmd cmd = {
IWL_BF_CMD_CONFIG_DEFAULTS,
.bf_enable_beacon_filter = cpu_to_le32(1),
};
if (!mvmvif->bf_data.bf_enabled)
return 0;
if (mvm->cur_ucode == IWL_UCODE_WOWLAN)
cmd.ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_D3);
mvmvif->bf_data.ba_enabled = !(!mvmvif->pm_enabled ||
mvm->ps_disabled ||
!vif->bss_conf.ps ||
iwl_mvm_vif_low_latency(mvmvif));
return _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd, 0, false);
}
int iwl_mvm_power_update_ps(struct iwl_mvm *mvm)
{
struct iwl_power_vifs vifs = {
.mvm = mvm,
};
int ret;
lockdep_assert_held(&mvm->mutex);
/* get vifs info */
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_get_vifs_iterator, &vifs);
ret = iwl_mvm_power_set_ps(mvm);
if (ret)
return ret;
if (vifs.bss_vif)
return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
return 0;
}
int iwl_mvm_power_update_mac(struct iwl_mvm *mvm)
{
struct iwl_power_vifs vifs = {
.mvm = mvm,
};
int ret;
lockdep_assert_held(&mvm->mutex);
/* get vifs info */
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_power_get_vifs_iterator, &vifs);
iwl_mvm_power_set_pm(mvm, &vifs);
ret = iwl_mvm_power_set_ps(mvm);
if (ret)
return ret;
if (vifs.bss_vif) {
ret = iwl_mvm_power_send_cmd(mvm, vifs.bss_vif);
if (ret)
return ret;
}
if (vifs.p2p_vif) {
ret = iwl_mvm_power_send_cmd(mvm, vifs.p2p_vif);
if (ret)
return ret;
}
if (vifs.bss_vif)
return iwl_mvm_power_set_ba(mvm, vifs.bss_vif);
return 0;
}
int iwl_mvm_update_d0i3_power_mode(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
bool enable, u32 flags)
{
int ret;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_mac_power_cmd cmd = {};
if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return 0;
if (!vif->bss_conf.assoc)
return 0;
iwl_mvm_power_build_cmd(mvm, vif, &cmd, !enable);
iwl_mvm_power_log(mvm, &cmd);
#ifdef CONFIG_IWLWIFI_DEBUGFS
memcpy(&mvmvif->mac_pwr_cmd, &cmd, sizeof(cmd));
#endif
ret = iwl_mvm_send_cmd_pdu(mvm, MAC_PM_POWER_TABLE, flags,
sizeof(cmd), &cmd);
if (ret)
return ret;
/* configure beacon filtering */
if (mvmvif != mvm->bf_allowed_vif)
return 0;
if (enable) {
struct iwl_beacon_filter_cmd cmd_bf = {
IWL_BF_CMD_CONFIG_D0I3,
.bf_enable_beacon_filter = cpu_to_le32(1),
};
/*
* When beacon storing is supported - disable beacon filtering
* altogether - the latest beacon will be sent when exiting d0i3
*/
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_BEACON_STORING))
ret = _iwl_mvm_disable_beacon_filter(mvm, vif, flags,
true);
else
ret = _iwl_mvm_enable_beacon_filter(mvm, vif, &cmd_bf,
flags, true);
} else {
if (mvmvif->bf_data.bf_enabled)
ret = iwl_mvm_enable_beacon_filter(mvm, vif, flags);
else
ret = iwl_mvm_disable_beacon_filter(mvm, vif, flags);
}
return ret;
}
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