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path: root/drivers/net/wireless/realtek/rtlwifi/ps.c
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Diffstat (limited to 'drivers/net/wireless/realtek/rtlwifi/ps.c')
-rw-r--r--drivers/net/wireless/realtek/rtlwifi/ps.c1004
1 files changed, 1004 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtlwifi/ps.c b/drivers/net/wireless/realtek/rtlwifi/ps.c
new file mode 100644
index 000000000000..b69321d45f04
--- /dev/null
+++ b/drivers/net/wireless/realtek/rtlwifi/ps.c
@@ -0,0 +1,1004 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2009-2012 Realtek Corporation.
+ *
+ * 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.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * wlanfae <wlanfae@realtek.com>
+ * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
+ * Hsinchu 300, Taiwan.
+ *
+ * Larry Finger <Larry.Finger@lwfinger.net>
+ *
+ *****************************************************************************/
+
+#include "wifi.h"
+#include "base.h"
+#include "ps.h"
+#include <linux/export.h>
+#include "btcoexist/rtl_btc.h"
+
+bool rtl_ps_enable_nic(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+
+ /*<1> reset trx ring */
+ if (rtlhal->interface == INTF_PCI)
+ rtlpriv->intf_ops->reset_trx_ring(hw);
+
+ if (is_hal_stop(rtlhal))
+ RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+ "Driver is already down!\n");
+
+ /*<2> Enable Adapter */
+ if (rtlpriv->cfg->ops->hw_init(hw))
+ return false;
+ RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
+
+ /*<3> Enable Interrupt */
+ rtlpriv->cfg->ops->enable_interrupt(hw);
+
+ /*<enable timer> */
+ rtl_watch_dog_timer_callback((unsigned long)hw);
+
+ return true;
+}
+EXPORT_SYMBOL(rtl_ps_enable_nic);
+
+bool rtl_ps_disable_nic(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+ /*<1> Stop all timer */
+ rtl_deinit_deferred_work(hw);
+
+ /*<2> Disable Interrupt */
+ rtlpriv->cfg->ops->disable_interrupt(hw);
+ tasklet_kill(&rtlpriv->works.irq_tasklet);
+
+ /*<3> Disable Adapter */
+ rtlpriv->cfg->ops->hw_disable(hw);
+
+ return true;
+}
+EXPORT_SYMBOL(rtl_ps_disable_nic);
+
+bool rtl_ps_set_rf_state(struct ieee80211_hw *hw,
+ enum rf_pwrstate state_toset,
+ u32 changesource, bool protect_or_not)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ enum rf_pwrstate rtstate;
+ bool actionallowed = false;
+ u16 rfwait_cnt = 0;
+
+ if (protect_or_not)
+ goto no_protect;
+
+ /*Only one thread can change
+ *the RF state at one time, and others
+ *should wait to be executed.
+ */
+ while (true) {
+ spin_lock(&rtlpriv->locks.rf_ps_lock);
+ if (ppsc->rfchange_inprogress) {
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
+
+ RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+ "RF Change in progress! Wait to set..state_toset(%d).\n",
+ state_toset);
+
+ /* Set RF after the previous action is done. */
+ while (ppsc->rfchange_inprogress) {
+ rfwait_cnt++;
+ mdelay(1);
+ /*Wait too long, return false to avoid
+ *to be stuck here.
+ */
+ if (rfwait_cnt > 100)
+ return false;
+ }
+ } else {
+ ppsc->rfchange_inprogress = true;
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
+ break;
+ }
+ }
+
+no_protect:
+ rtstate = ppsc->rfpwr_state;
+
+ switch (state_toset) {
+ case ERFON:
+ ppsc->rfoff_reason &= (~changesource);
+
+ if ((changesource == RF_CHANGE_BY_HW) &&
+ (ppsc->hwradiooff)) {
+ ppsc->hwradiooff = false;
+ }
+
+ if (!ppsc->rfoff_reason) {
+ ppsc->rfoff_reason = 0;
+ actionallowed = true;
+ }
+
+ break;
+
+ case ERFOFF:
+
+ if ((changesource == RF_CHANGE_BY_HW) && !ppsc->hwradiooff) {
+ ppsc->hwradiooff = true;
+ }
+
+ ppsc->rfoff_reason |= changesource;
+ actionallowed = true;
+ break;
+
+ case ERFSLEEP:
+ ppsc->rfoff_reason |= changesource;
+ actionallowed = true;
+ break;
+
+ default:
+ RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+ "switch case not processed\n");
+ break;
+ }
+
+ if (actionallowed)
+ rtlpriv->cfg->ops->set_rf_power_state(hw, state_toset);
+
+ if (!protect_or_not) {
+ spin_lock(&rtlpriv->locks.rf_ps_lock);
+ ppsc->rfchange_inprogress = false;
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
+ }
+
+ return actionallowed;
+}
+EXPORT_SYMBOL(rtl_ps_set_rf_state);
+
+static void _rtl_ps_inactive_ps(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+
+ ppsc->swrf_processing = true;
+
+ if (ppsc->inactive_pwrstate == ERFON &&
+ rtlhal->interface == INTF_PCI) {
+ if ((ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM) &&
+ RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
+ rtlhal->interface == INTF_PCI) {
+ rtlpriv->intf_ops->disable_aspm(hw);
+ RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
+ }
+ }
+
+ rtl_ps_set_rf_state(hw, ppsc->inactive_pwrstate,
+ RF_CHANGE_BY_IPS, false);
+
+ if (ppsc->inactive_pwrstate == ERFOFF &&
+ rtlhal->interface == INTF_PCI) {
+ if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
+ !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
+ rtlpriv->intf_ops->enable_aspm(hw);
+ RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
+ }
+ }
+
+ ppsc->swrf_processing = false;
+}
+
+void rtl_ips_nic_off_wq_callback(void *data)
+{
+ struct rtl_works *rtlworks =
+ container_of_dwork_rtl(data, struct rtl_works, ips_nic_off_wq);
+ struct ieee80211_hw *hw = rtlworks->hw;
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ enum rf_pwrstate rtstate;
+
+ if (mac->opmode != NL80211_IFTYPE_STATION) {
+ RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+ "not station return\n");
+ return;
+ }
+
+ if (mac->p2p_in_use)
+ return;
+
+ if (mac->link_state > MAC80211_NOLINK)
+ return;
+
+ if (is_hal_stop(rtlhal))
+ return;
+
+ if (rtlpriv->sec.being_setkey)
+ return;
+
+ if (rtlpriv->cfg->ops->bt_coex_off_before_lps)
+ rtlpriv->cfg->ops->bt_coex_off_before_lps(hw);
+
+ if (ppsc->inactiveps) {
+ rtstate = ppsc->rfpwr_state;
+
+ /*
+ *Do not enter IPS in the following conditions:
+ *(1) RF is already OFF or Sleep
+ *(2) swrf_processing (indicates the IPS is still under going)
+ *(3) Connectted (only disconnected can trigger IPS)
+ *(4) IBSS (send Beacon)
+ *(5) AP mode (send Beacon)
+ *(6) monitor mode (rcv packet)
+ */
+
+ if (rtstate == ERFON &&
+ !ppsc->swrf_processing &&
+ (mac->link_state == MAC80211_NOLINK) &&
+ !mac->act_scanning) {
+ RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE,
+ "IPSEnter(): Turn off RF\n");
+
+ ppsc->inactive_pwrstate = ERFOFF;
+ ppsc->in_powersavemode = true;
+
+ /* call before RF off */
+ if (rtlpriv->cfg->ops->get_btc_status())
+ rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
+ ppsc->inactive_pwrstate);
+
+ /*rtl_pci_reset_trx_ring(hw); */
+ _rtl_ps_inactive_ps(hw);
+ }
+ }
+}
+
+void rtl_ips_nic_off(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+ /* because when link with ap, mac80211 will ask us
+ * to disable nic quickly after scan before linking,
+ * this will cause link failed, so we delay 100ms here
+ */
+ queue_delayed_work(rtlpriv->works.rtl_wq,
+ &rtlpriv->works.ips_nic_off_wq, MSECS(100));
+}
+
+/* NOTICE: any opmode should exc nic_on, or disable without
+ * nic_on may something wrong, like adhoc TP
+ */
+void rtl_ips_nic_on(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ enum rf_pwrstate rtstate;
+
+ cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
+
+ spin_lock(&rtlpriv->locks.ips_lock);
+ if (ppsc->inactiveps) {
+ rtstate = ppsc->rfpwr_state;
+
+ if (rtstate != ERFON &&
+ !ppsc->swrf_processing &&
+ ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) {
+
+ ppsc->inactive_pwrstate = ERFON;
+ ppsc->in_powersavemode = false;
+ _rtl_ps_inactive_ps(hw);
+ /* call after RF on */
+ if (rtlpriv->cfg->ops->get_btc_status())
+ rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv,
+ ppsc->inactive_pwrstate);
+ }
+ }
+ spin_unlock(&rtlpriv->locks.ips_lock);
+}
+EXPORT_SYMBOL_GPL(rtl_ips_nic_on);
+
+/*for FW LPS*/
+
+/*
+ *Determine if we can set Fw into PS mode
+ *in current condition.Return TRUE if it
+ *can enter PS mode.
+ */
+static bool rtl_get_fwlps_doze(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ u32 ps_timediff;
+
+ ps_timediff = jiffies_to_msecs(jiffies -
+ ppsc->last_delaylps_stamp_jiffies);
+
+ if (ps_timediff < 2000) {
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
+ "Delay enter Fw LPS for DHCP, ARP, or EAPOL exchanging state\n");
+ return false;
+ }
+
+ if (mac->link_state != MAC80211_LINKED)
+ return false;
+
+ if (mac->opmode == NL80211_IFTYPE_ADHOC)
+ return false;
+
+ return true;
+}
+
+/* Change current and default preamble mode.*/
+void rtl_lps_set_psmode(struct ieee80211_hw *hw, u8 rt_psmode)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ bool enter_fwlps;
+
+ if (mac->opmode == NL80211_IFTYPE_ADHOC)
+ return;
+
+ if (mac->link_state != MAC80211_LINKED)
+ return;
+
+ if (ppsc->dot11_psmode == rt_psmode)
+ return;
+
+ /* Update power save mode configured. */
+ ppsc->dot11_psmode = rt_psmode;
+
+ /*
+ *<FW control LPS>
+ *1. Enter PS mode
+ * Set RPWM to Fw to turn RF off and send H2C fw_pwrmode
+ * cmd to set Fw into PS mode.
+ *2. Leave PS mode
+ * Send H2C fw_pwrmode cmd to Fw to set Fw into Active
+ * mode and set RPWM to turn RF on.
+ */
+
+ if ((ppsc->fwctrl_lps) && ppsc->report_linked) {
+ if (ppsc->dot11_psmode == EACTIVE) {
+ RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
+ "FW LPS leave ps_mode:%x\n",
+ FW_PS_ACTIVE_MODE);
+ enter_fwlps = false;
+ ppsc->pwr_mode = FW_PS_ACTIVE_MODE;
+ ppsc->smart_ps = 0;
+ rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_FW_LPS_ACTION,
+ (u8 *)(&enter_fwlps));
+ if (ppsc->p2p_ps_info.opp_ps)
+ rtl_p2p_ps_cmd(hw , P2P_PS_ENABLE);
+
+ if (rtlpriv->cfg->ops->get_btc_status())
+ rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
+ } else {
+ if (rtl_get_fwlps_doze(hw)) {
+ RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
+ "FW LPS enter ps_mode:%x\n",
+ ppsc->fwctrl_psmode);
+ if (rtlpriv->cfg->ops->get_btc_status())
+ rtlpriv->btcoexist.btc_ops->btc_lps_notify(rtlpriv, rt_psmode);
+ enter_fwlps = true;
+ ppsc->pwr_mode = ppsc->fwctrl_psmode;
+ ppsc->smart_ps = 2;
+ rtlpriv->cfg->ops->set_hw_reg(hw,
+ HW_VAR_FW_LPS_ACTION,
+ (u8 *)(&enter_fwlps));
+
+ } else {
+ /* Reset the power save related parameters. */
+ ppsc->dot11_psmode = EACTIVE;
+ }
+ }
+ }
+}
+
+/*Enter the leisure power save mode.*/
+void rtl_lps_enter(struct ieee80211_hw *hw)
+{
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ unsigned long flag;
+
+ if (!ppsc->fwctrl_lps)
+ return;
+
+ if (rtlpriv->sec.being_setkey)
+ return;
+
+ if (rtlpriv->link_info.busytraffic)
+ return;
+
+ /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
+ if (mac->cnt_after_linked < 5)
+ return;
+
+ if (mac->opmode == NL80211_IFTYPE_ADHOC)
+ return;
+
+ if (mac->link_state != MAC80211_LINKED)
+ return;
+
+ spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+
+ /* Idle for a while if we connect to AP a while ago. */
+ if (mac->cnt_after_linked >= 2) {
+ if (ppsc->dot11_psmode == EACTIVE) {
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
+ "Enter 802.11 power save mode...\n");
+
+ rtl_lps_set_psmode(hw, EAUTOPS);
+ }
+ }
+
+ spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+EXPORT_SYMBOL(rtl_lps_enter);
+
+/*Leave the leisure power save mode.*/
+void rtl_lps_leave(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
+ unsigned long flag;
+
+ spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+
+ if (ppsc->fwctrl_lps) {
+ if (ppsc->dot11_psmode != EACTIVE) {
+
+ /*FIX ME */
+ /*rtlpriv->cfg->ops->enable_interrupt(hw); */
+
+ if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
+ RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM) &&
+ rtlhal->interface == INTF_PCI) {
+ rtlpriv->intf_ops->disable_aspm(hw);
+ RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
+ }
+
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
+ "Busy Traffic,Leave 802.11 power save..\n");
+
+ rtl_lps_set_psmode(hw, EACTIVE);
+ }
+ }
+ spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+EXPORT_SYMBOL(rtl_lps_leave);
+
+/* For sw LPS*/
+void rtl_swlps_beacon(struct ieee80211_hw *hw, void *data, unsigned int len)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct ieee80211_hdr *hdr = data;
+ struct ieee80211_tim_ie *tim_ie;
+ u8 *tim;
+ u8 tim_len;
+ bool u_buffed;
+ bool m_buffed;
+
+ if (mac->opmode != NL80211_IFTYPE_STATION)
+ return;
+
+ if (!rtlpriv->psc.swctrl_lps)
+ return;
+
+ if (rtlpriv->mac80211.link_state != MAC80211_LINKED)
+ return;
+
+ if (!rtlpriv->psc.sw_ps_enabled)
+ return;
+
+ if (rtlpriv->psc.fwctrl_lps)
+ return;
+
+ if (likely(!(hw->conf.flags & IEEE80211_CONF_PS)))
+ return;
+
+ /* check if this really is a beacon */
+ if (!ieee80211_is_beacon(hdr->frame_control))
+ return;
+
+ /* min. beacon length + FCS_LEN */
+ if (len <= 40 + FCS_LEN)
+ return;
+
+ /* and only beacons from the associated BSSID, please */
+ if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
+ return;
+
+ rtlpriv->psc.last_beacon = jiffies;
+
+ tim = rtl_find_ie(data, len - FCS_LEN, WLAN_EID_TIM);
+ if (!tim)
+ return;
+
+ if (tim[1] < sizeof(*tim_ie))
+ return;
+
+ tim_len = tim[1];
+ tim_ie = (struct ieee80211_tim_ie *) &tim[2];
+
+ if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period))
+ rtlpriv->psc.dtim_counter = tim_ie->dtim_count;
+
+ /* Check whenever the PHY can be turned off again. */
+
+ /* 1. What about buffered unicast traffic for our AID? */
+ u_buffed = ieee80211_check_tim(tim_ie, tim_len,
+ rtlpriv->mac80211.assoc_id);
+
+ /* 2. Maybe the AP wants to send multicast/broadcast data? */
+ m_buffed = tim_ie->bitmap_ctrl & 0x01;
+ rtlpriv->psc.multi_buffered = m_buffed;
+
+ /* unicast will process by mac80211 through
+ * set ~IEEE80211_CONF_PS, So we just check
+ * multicast frames here */
+ if (!m_buffed) {
+ /* back to low-power land. and delay is
+ * prevent null power save frame tx fail */
+ queue_delayed_work(rtlpriv->works.rtl_wq,
+ &rtlpriv->works.ps_work, MSECS(5));
+ } else {
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
+ "u_bufferd: %x, m_buffered: %x\n", u_buffed, m_buffed);
+ }
+}
+EXPORT_SYMBOL_GPL(rtl_swlps_beacon);
+
+void rtl_swlps_rf_awake(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ unsigned long flag;
+
+ if (!rtlpriv->psc.swctrl_lps)
+ return;
+ if (mac->link_state != MAC80211_LINKED)
+ return;
+
+ if (ppsc->reg_rfps_level & RT_RF_LPS_LEVEL_ASPM &&
+ RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
+ rtlpriv->intf_ops->disable_aspm(hw);
+ RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
+ }
+
+ spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+ rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS, false);
+ spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+}
+
+void rtl_swlps_rfon_wq_callback(void *data)
+{
+ struct rtl_works *rtlworks =
+ container_of_dwork_rtl(data, struct rtl_works, ps_rfon_wq);
+ struct ieee80211_hw *hw = rtlworks->hw;
+
+ rtl_swlps_rf_awake(hw);
+}
+
+void rtl_swlps_rf_sleep(struct ieee80211_hw *hw)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+ unsigned long flag;
+ u8 sleep_intv;
+
+ if (!rtlpriv->psc.sw_ps_enabled)
+ return;
+
+ if ((rtlpriv->sec.being_setkey) ||
+ (mac->opmode == NL80211_IFTYPE_ADHOC))
+ return;
+
+ /*sleep after linked 10s, to let DHCP and 4-way handshake ok enough!! */
+ if ((mac->link_state != MAC80211_LINKED) || (mac->cnt_after_linked < 5))
+ return;
+
+ if (rtlpriv->link_info.busytraffic)
+ return;
+
+ spin_lock(&rtlpriv->locks.rf_ps_lock);
+ if (rtlpriv->psc.rfchange_inprogress) {
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
+ return;
+ }
+ spin_unlock(&rtlpriv->locks.rf_ps_lock);
+
+ spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag);
+ rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS , false);
+ spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag);
+
+ if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM &&
+ !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) {
+ rtlpriv->intf_ops->enable_aspm(hw);
+ RT_SET_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM);
+ }
+
+ /* here is power save alg, when this beacon is DTIM
+ * we will set sleep time to dtim_period * n;
+ * when this beacon is not DTIM, we will set sleep
+ * time to sleep_intv = rtlpriv->psc.dtim_counter or
+ * MAX_SW_LPS_SLEEP_INTV(default set to 5) */
+
+ if (rtlpriv->psc.dtim_counter == 0) {
+ if (hw->conf.ps_dtim_period == 1)
+ sleep_intv = hw->conf.ps_dtim_period * 2;
+ else
+ sleep_intv = hw->conf.ps_dtim_period;
+ } else {
+ sleep_intv = rtlpriv->psc.dtim_counter;
+ }
+
+ if (sleep_intv > MAX_SW_LPS_SLEEP_INTV)
+ sleep_intv = MAX_SW_LPS_SLEEP_INTV;
+
+ /* this print should always be dtim_conter = 0 &
+ * sleep = dtim_period, that meaons, we should
+ * awake before every dtim */
+ RT_TRACE(rtlpriv, COMP_POWER, DBG_DMESG,
+ "dtim_counter:%x will sleep :%d beacon_intv\n",
+ rtlpriv->psc.dtim_counter, sleep_intv);
+
+ /* we tested that 40ms is enough for sw & hw sw delay */
+ queue_delayed_work(rtlpriv->works.rtl_wq, &rtlpriv->works.ps_rfon_wq,
+ MSECS(sleep_intv * mac->vif->bss_conf.beacon_int - 40));
+}
+
+void rtl_lps_change_work_callback(struct work_struct *work)
+{
+ struct rtl_works *rtlworks =
+ container_of(work, struct rtl_works, lps_change_work);
+ struct ieee80211_hw *hw = rtlworks->hw;
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+ if (rtlpriv->enter_ps)
+ rtl_lps_enter(hw);
+ else
+ rtl_lps_leave(hw);
+}
+EXPORT_SYMBOL_GPL(rtl_lps_change_work_callback);
+
+void rtl_swlps_wq_callback(void *data)
+{
+ struct rtl_works *rtlworks = container_of_dwork_rtl(data,
+ struct rtl_works,
+ ps_work);
+ struct ieee80211_hw *hw = rtlworks->hw;
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ bool ps = false;
+
+ ps = (hw->conf.flags & IEEE80211_CONF_PS);
+
+ /* we can sleep after ps null send ok */
+ if (rtlpriv->psc.state_inap) {
+ rtl_swlps_rf_sleep(hw);
+
+ if (rtlpriv->psc.state && !ps) {
+ rtlpriv->psc.sleep_ms = jiffies_to_msecs(jiffies -
+ rtlpriv->psc.last_action);
+ }
+
+ if (ps)
+ rtlpriv->psc.last_slept = jiffies;
+
+ rtlpriv->psc.last_action = jiffies;
+ rtlpriv->psc.state = ps;
+ }
+}
+
+static void rtl_p2p_noa_ie(struct ieee80211_hw *hw, void *data,
+ unsigned int len)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct ieee80211_mgmt *mgmt = data;
+ struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
+ u8 *pos, *end, *ie;
+ u16 noa_len;
+ static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
+ u8 noa_num, index , i, noa_index = 0;
+ bool find_p2p_ie = false , find_p2p_ps_ie = false;
+ pos = (u8 *)mgmt->u.beacon.variable;
+ end = data + len;
+ ie = NULL;
+
+ while (pos + 1 < end) {
+ if (pos + 2 + pos[1] > end)
+ return;
+
+ if (pos[0] == 221 && pos[1] > 4) {
+ if (memcmp(&pos[2], p2p_oui_ie_type, 4) == 0) {
+ ie = pos + 2+4;
+ break;
+ }
+ }
+ pos += 2 + pos[1];
+ }
+
+ if (ie == NULL)
+ return;
+ find_p2p_ie = true;
+ /*to find noa ie*/
+ while (ie + 1 < end) {
+ noa_len = READEF2BYTE((__le16 *)&ie[1]);
+ if (ie + 3 + ie[1] > end)
+ return;
+
+ if (ie[0] == 12) {
+ find_p2p_ps_ie = true;
+ if ((noa_len - 2) % 13 != 0) {
+ RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
+ "P2P notice of absence: invalid length.%d\n",
+ noa_len);
+ return;
+ } else {
+ noa_num = (noa_len - 2) / 13;
+ }
+ noa_index = ie[3];
+ if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
+ P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
+ "update NOA ie.\n");
+ p2pinfo->noa_index = noa_index;
+ p2pinfo->opp_ps = (ie[4] >> 7);
+ p2pinfo->ctwindow = ie[4] & 0x7F;
+ p2pinfo->noa_num = noa_num;
+ index = 5;
+ for (i = 0; i < noa_num; i++) {
+ p2pinfo->noa_count_type[i] =
+ READEF1BYTE(ie+index);
+ index += 1;
+ p2pinfo->noa_duration[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ p2pinfo->noa_interval[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ p2pinfo->noa_start_time[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ }
+
+ if (p2pinfo->opp_ps == 1) {
+ p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
+ /* Driver should wait LPS entering
+ * CTWindow
+ */
+ if (rtlpriv->psc.fw_current_inpsmode)
+ rtl_p2p_ps_cmd(hw,
+ P2P_PS_ENABLE);
+ } else if (p2pinfo->noa_num > 0) {
+ p2pinfo->p2p_ps_mode = P2P_PS_NOA;
+ rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
+ } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
+ rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
+ }
+ }
+ break;
+ }
+ ie += 3 + noa_len;
+ }
+
+ if (find_p2p_ie == true) {
+ if ((p2pinfo->p2p_ps_mode > P2P_PS_NONE) &&
+ (find_p2p_ps_ie == false))
+ rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
+ }
+}
+
+static void rtl_p2p_action_ie(struct ieee80211_hw *hw, void *data,
+ unsigned int len)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct ieee80211_mgmt *mgmt = data;
+ struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
+ u8 noa_num, index , i , noa_index = 0;
+ u8 *pos, *end, *ie;
+ u16 noa_len;
+ static u8 p2p_oui_ie_type[4] = {0x50, 0x6f, 0x9a, 0x09};
+
+ pos = (u8 *)&mgmt->u.action.category;
+ end = data + len;
+ ie = NULL;
+
+ if (pos[0] == 0x7f) {
+ if (memcmp(&pos[1], p2p_oui_ie_type, 4) == 0)
+ ie = pos + 3+4;
+ }
+
+ if (ie == NULL)
+ return;
+
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "action frame find P2P IE.\n");
+ /*to find noa ie*/
+ while (ie + 1 < end) {
+ noa_len = READEF2BYTE((__le16 *)&ie[1]);
+ if (ie + 3 + ie[1] > end)
+ return;
+
+ if (ie[0] == 12) {
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "find NOA IE.\n");
+ RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, "noa ie ",
+ ie, noa_len);
+ if ((noa_len - 2) % 13 != 0) {
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
+ "P2P notice of absence: invalid length.%d\n",
+ noa_len);
+ return;
+ } else {
+ noa_num = (noa_len - 2) / 13;
+ }
+ noa_index = ie[3];
+ if (rtlpriv->psc.p2p_ps_info.p2p_ps_mode ==
+ P2P_PS_NONE || noa_index != p2pinfo->noa_index) {
+ p2pinfo->noa_index = noa_index;
+ p2pinfo->opp_ps = (ie[4] >> 7);
+ p2pinfo->ctwindow = ie[4] & 0x7F;
+ p2pinfo->noa_num = noa_num;
+ index = 5;
+ for (i = 0; i < noa_num; i++) {
+ p2pinfo->noa_count_type[i] =
+ READEF1BYTE(ie+index);
+ index += 1;
+ p2pinfo->noa_duration[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ p2pinfo->noa_interval[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ p2pinfo->noa_start_time[i] =
+ READEF4BYTE((__le32 *)ie+index);
+ index += 4;
+ }
+
+ if (p2pinfo->opp_ps == 1) {
+ p2pinfo->p2p_ps_mode = P2P_PS_CTWINDOW;
+ /* Driver should wait LPS entering
+ * CTWindow
+ */
+ if (rtlpriv->psc.fw_current_inpsmode)
+ rtl_p2p_ps_cmd(hw,
+ P2P_PS_ENABLE);
+ } else if (p2pinfo->noa_num > 0) {
+ p2pinfo->p2p_ps_mode = P2P_PS_NOA;
+ rtl_p2p_ps_cmd(hw, P2P_PS_ENABLE);
+ } else if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
+ rtl_p2p_ps_cmd(hw, P2P_PS_DISABLE);
+ }
+ }
+ break;
+ }
+ ie += 3 + noa_len;
+ }
+}
+
+void rtl_p2p_ps_cmd(struct ieee80211_hw *hw , u8 p2p_ps_state)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_ps_ctl *rtlps = rtl_psc(rtl_priv(hw));
+ struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info);
+
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, " p2p state %x\n" , p2p_ps_state);
+ switch (p2p_ps_state) {
+ case P2P_PS_DISABLE:
+ p2pinfo->p2p_ps_state = p2p_ps_state;
+ rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
+ &p2p_ps_state);
+ p2pinfo->noa_index = 0;
+ p2pinfo->ctwindow = 0;
+ p2pinfo->opp_ps = 0;
+ p2pinfo->noa_num = 0;
+ p2pinfo->p2p_ps_mode = P2P_PS_NONE;
+ if (rtlps->fw_current_inpsmode) {
+ if (rtlps->smart_ps == 0) {
+ rtlps->smart_ps = 2;
+ rtlpriv->cfg->ops->set_hw_reg(hw,
+ HW_VAR_H2C_FW_PWRMODE,
+ &rtlps->pwr_mode);
+ }
+
+ }
+ break;
+ case P2P_PS_ENABLE:
+ if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
+ p2pinfo->p2p_ps_state = p2p_ps_state;
+
+ if (p2pinfo->ctwindow > 0) {
+ if (rtlps->smart_ps != 0) {
+ rtlps->smart_ps = 0;
+ rtlpriv->cfg->ops->set_hw_reg(hw,
+ HW_VAR_H2C_FW_PWRMODE,
+ &rtlps->pwr_mode);
+ }
+ }
+ rtlpriv->cfg->ops->set_hw_reg(hw,
+ HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
+ &p2p_ps_state);
+
+ }
+ break;
+ case P2P_PS_SCAN:
+ case P2P_PS_SCAN_DONE:
+ case P2P_PS_ALLSTASLEEP:
+ if (p2pinfo->p2p_ps_mode > P2P_PS_NONE) {
+ p2pinfo->p2p_ps_state = p2p_ps_state;
+ rtlpriv->cfg->ops->set_hw_reg(hw,
+ HW_VAR_H2C_FW_P2P_PS_OFFLOAD,
+ &p2p_ps_state);
+ }
+ break;
+ default:
+ break;
+ }
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
+ "ctwindow %x oppps %x\n",
+ p2pinfo->ctwindow , p2pinfo->opp_ps);
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD,
+ "count %x duration %x index %x interval %x start time %x noa num %x\n",
+ p2pinfo->noa_count_type[0],
+ p2pinfo->noa_duration[0],
+ p2pinfo->noa_index,
+ p2pinfo->noa_interval[0],
+ p2pinfo->noa_start_time[0],
+ p2pinfo->noa_num);
+ RT_TRACE(rtlpriv, COMP_FW, DBG_LOUD, "end\n");
+}
+
+void rtl_p2p_info(struct ieee80211_hw *hw, void *data, unsigned int len)
+{
+ struct rtl_priv *rtlpriv = rtl_priv(hw);
+ struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+ struct ieee80211_hdr *hdr = data;
+
+ if (!mac->p2p)
+ return;
+ if (mac->link_state != MAC80211_LINKED)
+ return;
+ /* min. beacon length + FCS_LEN */
+ if (len <= 40 + FCS_LEN)
+ return;
+
+ /* and only beacons from the associated BSSID, please */
+ if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
+ return;
+
+ /* check if this really is a beacon */
+ if (!(ieee80211_is_beacon(hdr->frame_control) ||
+ ieee80211_is_probe_resp(hdr->frame_control) ||
+ ieee80211_is_action(hdr->frame_control)))
+ return;
+
+ if (ieee80211_is_action(hdr->frame_control))
+ rtl_p2p_action_ie(hw , data , len - FCS_LEN);
+ else
+ rtl_p2p_noa_ie(hw , data , len - FCS_LEN);
+}
+EXPORT_SYMBOL_GPL(rtl_p2p_info);