diff options
Diffstat (limited to 'drivers/staging/rtl8821ae/ps.c')
| -rw-r--r-- | drivers/staging/rtl8821ae/ps.c | 1025 |
1 files changed, 1025 insertions, 0 deletions
diff --git a/drivers/staging/rtl8821ae/ps.c b/drivers/staging/rtl8821ae/ps.c new file mode 100644 index 000000000000..f12ffa83c58d --- /dev/null +++ b/drivers/staging/rtl8821ae/ps.c @@ -0,0 +1,1025 @@ +/****************************************************************************** + * + * Copyright(c) 2009-2010 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. + * + * 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 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" +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,2,0)) +#include <linux/export.h> +#endif +#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)); + bool init_status = true; + + /*<1> reset trx ring */ + if (rtlhal->interface == INTF_PCI) + rtlpriv->intf_ops->reset_trx_ring(hw); + + if (is_hal_stop(rtlhal)) + RT_TRACE(COMP_ERR, DBG_WARNING, ("Driver is already down!\n")); + + /*<2> Enable Adapter */ + rtlpriv->cfg->ops->hw_init(hw); + RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC); + /*init_status = false; */ + + /*<3> Enable Interrupt */ + rtlpriv->cfg->ops->enable_interrupt(hw); + + /*<enable timer> */ + rtl_watch_dog_timer_callback((unsigned long)hw); + + return init_status; +} +//EXPORT_SYMBOL(rtl_ps_enable_nic); + +bool rtl_ps_disable_nic(struct ieee80211_hw *hw) +{ + bool status = true; + 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); + + /*<3> Disable Adapter */ + rtlpriv->cfg->ops->hw_disable(hw); + + return status; +} +//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 b_actionallowed = false; + u16 rfwait_cnt = 0; + + /*protect_or_not = true; */ + + 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(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->b_hwradiooff == true)) { + ppsc->b_hwradiooff = false; + } + + if (!ppsc->rfoff_reason) { + ppsc->rfoff_reason = 0; + b_actionallowed = true; + } + + break; + + case ERFOFF: + + if ((changesource == RF_CHANGE_BY_HW) && + (ppsc->b_hwradiooff == false)) { + ppsc->b_hwradiooff = true; + } + + ppsc->rfoff_reason |= changesource; + b_actionallowed = true; + break; + + case ERFSLEEP: + ppsc->rfoff_reason |= changesource; + b_actionallowed = true; + break; + + default: + RT_TRACE(COMP_ERR, DBG_EMERG, ("switch case not process \n")); + break; + } + + if (b_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 b_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->b_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); + } + } + + if (rtlpriv->cfg->ops->get_btc_status()){ + rtlpriv->btcoexist.btc_ops->btc_ips_notify(rtlpriv, + ppsc->inactive_pwrstate); + } + 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->b_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(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_turn_off_bt_coexist_before_enter_lps) + rtlpriv->cfg->ops->bt_turn_off_bt_coexist_before_enter_lps(hw); + + if (ppsc->b_inactiveps) { + rtstate = ppsc->rfpwr_state; + + /* + *Do not enter IPS in the following conditions: + *(1) RF is already OFF or Sleep + *(2) b_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->b_swrf_processing && + (mac->link_state == MAC80211_NOLINK) && + !mac->act_scanning) { + RT_TRACE(COMP_RF, DBG_LOUD, + ("IPSEnter(): Turn off RF.\n")); + + ppsc->inactive_pwrstate = ERFOFF; + ppsc->b_in_powersavemode = true; + + /*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->b_inactiveps) { + rtstate = ppsc->rfpwr_state; + + if (rtstate != ERFON && + !ppsc->b_swrf_processing && + ppsc->rfoff_reason <= RF_CHANGE_BY_IPS) { + + ppsc->inactive_pwrstate = ERFON; + ppsc->b_in_powersavemode = false; + _rtl_ps_inactive_ps(hw); + } + } + spin_unlock(&rtlpriv->locks.ips_lock); +} + +/*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(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->b_fwctrl_lps) && ppsc->report_linked) { + if (ppsc->dot11_psmode == EACTIVE) { + RT_TRACE(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); + + } else { + if (rtl_get_fwlps_doze(hw)) { + RT_TRACE(COMP_RF, DBG_DMESG, + ("FW LPS enter ps_mode:%x\n", + ppsc->fwctrl_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->b_fwctrl_lps) + return; + + if (rtlpriv->sec.being_setkey) + return; + + if (rtlpriv->link_info.b_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(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); +} + +/*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->b_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(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); +} + +/* 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 = (void *) 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.b_swctrl_lps) + return; + + if (rtlpriv->mac80211.link_state != MAC80211_LINKED) + return; + + if (!rtlpriv->psc.sw_ps_enabled) + return; + + if (rtlpriv->psc.b_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(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]; + +/*<delete in kernel start>*/ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) +/*<delete in kernel end>*/ + if (!WARN_ON_ONCE(!hw->conf.ps_dtim_period)) + rtlpriv->psc.dtim_counter = tim_ie->dtim_count; +/*<delete in kernel start>*/ +#else + if (!WARN_ON_ONCE(!mac->vif->bss_conf.dtim_period)) + rtlpriv->psc.dtim_counter = tim_ie->dtim_count; +#endif +/*<delete in kernel end>*/ + + /* 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 ) {//&&) {// !rtlpriv->psc.tx_doing) { + /* 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(COMP_POWER, DBG_DMESG, + ("u_bufferd: %x, m_buffered: %x\n", + u_buffed, m_buffed)); + } +} + +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.b_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.b_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) */ + +/*<delete in kernel start>*/ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) +/*<delete in kernel end>*/ + 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; + } +/*<delete in kernel start>*/ +#else + if (rtlpriv->psc.dtim_counter == 0) { + if (mac->vif->bss_conf.dtim_period == 1) + sleep_intv = mac->vif->bss_conf.dtim_period * 2; + else + sleep_intv = mac->vif->bss_conf.dtim_period; + } else { + sleep_intv = rtlpriv->psc.dtim_counter; + } +#endif +/*<delete in kernel end>*/ + + 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(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_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; + } +} + + +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 = (void *)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(&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(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(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(ie+index); + index += 4; + p2pinfo->noa_interval[i] = + READEF4BYTE(ie+index); + index += 4; + p2pinfo->noa_start_time[i] = + READEF4BYTE(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.b_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); + } +} + +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 = (void *)data; + struct rtl_p2p_ps_info *p2pinfo = &(rtlpriv->psc.p2p_ps_info); + bool find_p2p_ie = false , find_p2p_ps_ie = false; + 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; + find_p2p_ie = true; + + RT_TRACE(COMP_FW, DBG_LOUD, ("action frame find P2P IE.\n")); + /*to find noa ie*/ + while (ie + 1 < end) { + noa_len = READEF2BYTE(&ie[1]); + if (ie + 3 + ie[1] > end) + return; + + if (ie[0] == 12) { + RT_TRACE(COMP_FW, DBG_LOUD, ("find NOA IE.\n")); + RT_PRINT_DATA(rtlpriv, COMP_FW, DBG_LOUD, ("noa ie "), + ie, noa_len); + find_p2p_ps_ie = true; + if ( (noa_len - 2) % 13 != 0){ + RT_TRACE(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(ie+index); + index += 4; + p2pinfo->noa_interval[i] = + READEF4BYTE(ie+index); + index += 4; + p2pinfo->noa_start_time[i] = + READEF4BYTE(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.b_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(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, + (u8 *)(&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->b_fw_current_inpsmode == true) { + if (rtlps->smart_ps == 0) { + rtlps->smart_ps = 2; + rtlpriv->cfg->ops->set_hw_reg(hw, + HW_VAR_H2C_FW_PWRMODE, + (u8 *)(&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, + (u8 *)(&rtlps->pwr_mode)); + } + } + rtlpriv->cfg->ops->set_hw_reg(hw, + HW_VAR_H2C_FW_P2P_PS_OFFLOAD, + (u8 *)(&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, + (u8 *)(&p2p_ps_state)); + } + break; + default: + break; + + } + RT_TRACE(COMP_FW, DBG_LOUD, (" ctwindow %x oppps %x \n", + p2pinfo->ctwindow,p2pinfo->opp_ps)); + RT_TRACE(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(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 = (void *) 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(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); + } + +} |