rtl8192ce: Add new driver

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 958 insertions, 0 deletions

diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
new file mode 100644
index 00000000000..9e860ff30b5
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/base.c
@@ -0,0 +1,958 @@
+/******************************************************************************
+ *
+ * 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 <linux/ip.h>
+#include "wifi.h"
+#include "rc.h"
+#include "base.h"
+#include "efuse.h"
+#include "cam.h"
+#include "ps.h"
+#include "regd.h"
+
+/*
+ *NOTICE!!!: This file will be very big, we hsould
+ *keep it clear under follwing roles:
+ *
+ *This file include follwing part, so, if you add new
+ *functions into this file, please check which part it
+ *should includes. or check if you should add new part
+ *for this file:
+ *
+ *1) mac80211 init functions
+ *2) tx information functions
+ *3) functions called by core.c
+ *4) wq & timer callback functions
+ *5) frame process functions
+ *6) sysfs functions
+ *7) ...
+ */
+
+/*********************************************************
+ *
+ * mac80211 init functions
+ *
+ *********************************************************/
+static struct ieee80211_channel rtl_channeltable[] = {
+	{.center_freq = 2412, .hw_value = 1,},
+	{.center_freq = 2417, .hw_value = 2,},
+	{.center_freq = 2422, .hw_value = 3,},
+	{.center_freq = 2427, .hw_value = 4,},
+	{.center_freq = 2432, .hw_value = 5,},
+	{.center_freq = 2437, .hw_value = 6,},
+	{.center_freq = 2442, .hw_value = 7,},
+	{.center_freq = 2447, .hw_value = 8,},
+	{.center_freq = 2452, .hw_value = 9,},
+	{.center_freq = 2457, .hw_value = 10,},
+	{.center_freq = 2462, .hw_value = 11,},
+	{.center_freq = 2467, .hw_value = 12,},
+	{.center_freq = 2472, .hw_value = 13,},
+	{.center_freq = 2484, .hw_value = 14,},
+};
+
+static struct ieee80211_rate rtl_ratetable[] = {
+	{.bitrate = 10, .hw_value = 0x00,},
+	{.bitrate = 20, .hw_value = 0x01,},
+	{.bitrate = 55, .hw_value = 0x02,},
+	{.bitrate = 110, .hw_value = 0x03,},
+	{.bitrate = 60, .hw_value = 0x04,},
+	{.bitrate = 90, .hw_value = 0x05,},
+	{.bitrate = 120, .hw_value = 0x06,},
+	{.bitrate = 180, .hw_value = 0x07,},
+	{.bitrate = 240, .hw_value = 0x08,},
+	{.bitrate = 360, .hw_value = 0x09,},
+	{.bitrate = 480, .hw_value = 0x0a,},
+	{.bitrate = 540, .hw_value = 0x0b,},
+};
+
+static const struct ieee80211_supported_band rtl_band_2ghz = {
+	.band = IEEE80211_BAND_2GHZ,
+
+	.channels = rtl_channeltable,
+	.n_channels = ARRAY_SIZE(rtl_channeltable),
+
+	.bitrates = rtl_ratetable,
+	.n_bitrates = ARRAY_SIZE(rtl_ratetable),
+
+	.ht_cap = {0},
+};
+
+static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
+				  struct ieee80211_sta_ht_cap *ht_cap)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_phy *rtlphy = &(rtlpriv->phy);
+
+	ht_cap->ht_supported = true;
+	ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+	    IEEE80211_HT_CAP_SGI_40 |
+	    IEEE80211_HT_CAP_SGI_20 |
+	    IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
+
+	/*
+	 *Maximum length of AMPDU that the STA can receive.
+	 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
+	 */
+	ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
+
+	/*Minimum MPDU start spacing , */
+	ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
+
+	ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
+
+	/*
+	 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
+	 *base on ant_num
+	 *rx_mask: RX mask
+	 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
+	 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
+	 *if rx_ant >=3 rx_mask[2]=0xff;
+	 *if BW_40 rx_mask[4]=0x01;
+	 *highest supported RX rate
+	 */
+	if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
+
+		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
+
+		ht_cap->mcs.rx_mask[0] = 0xFF;
+		ht_cap->mcs.rx_mask[1] = 0xFF;
+		ht_cap->mcs.rx_mask[4] = 0x01;
+
+		ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS15;
+	} else if (get_rf_type(rtlphy) == RF_1T1R) {
+
+		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
+
+		ht_cap->mcs.rx_mask[0] = 0xFF;
+		ht_cap->mcs.rx_mask[1] = 0x00;
+		ht_cap->mcs.rx_mask[4] = 0x01;
+
+		ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS7;
+	}
+}
+
+static void _rtl_init_mac80211(struct ieee80211_hw *hw)
+{
+	struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
+	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
+	struct ieee80211_supported_band *sband;
+
+	/* <1> use  mac->bands as mem for hw->wiphy->bands */
+	sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
+
+	/*
+	 * <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
+	 * to default value(1T1R)
+	 */
+	memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
+	       sizeof(struct ieee80211_supported_band));
+
+	/* <3> init ht cap base on ant_num */
+	_rtl_init_hw_ht_capab(hw, &sband->ht_cap);
+
+	/* <4> set mac->sband to wiphy->sband */
+	hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
+
+	/* <5> set hw caps */
+	hw->flags = IEEE80211_HW_SIGNAL_DBM |
+	    IEEE80211_HW_RX_INCLUDES_FCS |
+	    IEEE80211_HW_BEACON_FILTER | IEEE80211_HW_AMPDU_AGGREGATION | /*PS*/
+	    /*IEEE80211_HW_SUPPORTS_PS | */
+	    /*IEEE80211_HW_PS_NULLFUNC_STACK | */
+	    /*IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
+	    IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
+
+	hw->wiphy->interface_modes =
+	    BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
+
+	hw->wiphy->rts_threshold = 2347;
+
+	hw->queues = AC_MAX;
+	hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
+
+	/* TODO: Correct this value for our hw */
+	/* TODO: define these hard code value */
+	hw->channel_change_time = 100;
+	hw->max_listen_interval = 5;
+	hw->max_rate_tries = 4;
+	/* hw->max_rates = 1; */
+
+	/* <6> mac address */
+	if (is_valid_ether_addr(rtlefuse->dev_addr)) {
+		SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
+	} else {
+		u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
+		get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1);
+		SET_IEEE80211_PERM_ADDR(hw, rtlmac);
+	}
+
+}
+
+static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	/* <1> timer */
+	init_timer(&rtlpriv->works.watchdog_timer);
+	setup_timer(&rtlpriv->works.watchdog_timer,
+		    rtl_watch_dog_timer_callback, (unsigned long)hw);
+
+	/* <2> work queue */
+	rtlpriv->works.hw = hw;
+	rtlpriv->works.rtl_wq = create_workqueue(rtlpriv->cfg->name);
+	INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
+			  (void *)rtl_watchdog_wq_callback);
+	INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
+			  (void *)rtl_ips_nic_off_wq_callback);
+
+}
+
+void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	del_timer_sync(&rtlpriv->works.watchdog_timer);
+
+	cancel_delayed_work(&rtlpriv->works.watchdog_wq);
+	cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
+}
+
+void rtl_init_rfkill(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	bool radio_state;
+	bool blocked;
+	u8 valid = 0;
+
+	/*set init state to rf on */
+	rtlpriv->rfkill.rfkill_state = 1;
+
+	radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
+
+	if (valid) {
+		RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
+			 (KERN_INFO "wireless switch is %s\n",
+			  rtlpriv->rfkill.rfkill_state ? "on" : "off"));
+
+		rtlpriv->rfkill.rfkill_state = radio_state;
+
+		blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
+		wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
+	}
+
+	wiphy_rfkill_start_polling(hw->wiphy);
+}
+
+void rtl_deinit_rfkill(struct ieee80211_hw *hw)
+{
+	wiphy_rfkill_stop_polling(hw->wiphy);
+}
+
+int rtl_init_core(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
+
+	/* <1> init mac80211 */
+	_rtl_init_mac80211(hw);
+	rtlmac->hw = hw;
+
+	/* <2> rate control register */
+	if (rtl_rate_control_register()) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
+			 ("rtl: Unable to register rtl_rc,"
+			  "use default RC !!\n"));
+	} else {
+		hw->rate_control_algorithm = "rtl_rc";
+	}
+
+	/*
+	 * <3> init CRDA must come after init
+	 * mac80211 hw  in _rtl_init_mac80211.
+	 */
+	if (rtl_regd_init(hw, rtl_reg_notifier)) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
+		return 1;
+	} else {
+		/* CRDA regd hint must after init CRDA */
+		if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
+			RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+				 ("regulatory_hint fail\n"));
+		}
+	}
+
+	/* <4> locks */
+	sema_init(&rtlpriv->locks.ips_sem, 1);
+	sema_init(&rtlpriv->locks.conf_sem, 1);
+	spin_lock_init(&rtlpriv->locks.irq_th_lock);
+	spin_lock_init(&rtlpriv->locks.h2c_lock);
+	spin_lock_init(&rtlpriv->locks.rf_ps_lock);
+	spin_lock_init(&rtlpriv->locks.rf_lock);
+	spin_lock_init(&rtlpriv->locks.lps_lock);
+
+	rtlmac->link_state = MAC80211_NOLINK;
+
+	/* <5> init deferred work */
+	_rtl_init_deferred_work(hw);
+
+	return 0;
+}
+
+void rtl_deinit_core(struct ieee80211_hw *hw)
+{
+	 /*RC*/
+	rtl_rate_control_unregister();
+}
+
+void rtl_init_rx_config(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+
+	rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
+	rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER,
+				      (u8 *) (&mac->rx_mgt_filter));
+	rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER,
+				      (u8 *) (&mac->rx_ctrl_filter));
+	rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER,
+				      (u8 *) (&mac->rx_data_filter));
+}
+
+/*********************************************************
+ *
+ * tx information functions
+ *
+ *********************************************************/
+static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
+					  struct rtl_tcb_desc *tcb_desc,
+					  struct ieee80211_tx_info *info)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	u8 rate_flag = info->control.rates[0].flags;
+
+	tcb_desc->use_shortpreamble = false;
+
+	/* 1M can only use Long Preamble. 11B spec */
+	if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
+		return;
+	else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
+		tcb_desc->use_shortpreamble = true;
+
+	return;
+}
+
+static void _rtl_query_shortgi(struct ieee80211_hw *hw,
+			       struct rtl_tcb_desc *tcb_desc,
+			       struct ieee80211_tx_info *info)
+{
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+	u8 rate_flag = info->control.rates[0].flags;
+
+	tcb_desc->use_shortgi = false;
+
+	if (!mac->ht_enable)
+		return;
+
+	if (!mac->sgi_40 && !mac->sgi_20)
+		return;
+
+	if ((mac->bw_40 == true) && mac->sgi_40)
+		tcb_desc->use_shortgi = true;
+	else if ((mac->bw_40 == false) && mac->sgi_20)
+		tcb_desc->use_shortgi = true;
+
+	if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
+		tcb_desc->use_shortgi = false;
+
+}
+
+static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
+				       struct rtl_tcb_desc *tcb_desc,
+				       struct ieee80211_tx_info *info)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	u8 rate_flag = info->control.rates[0].flags;
+
+	/* Common Settings */
+	tcb_desc->b_rts_stbc = false;
+	tcb_desc->b_cts_enable = false;
+	tcb_desc->rts_sc = 0;
+	tcb_desc->b_rts_bw = false;
+	tcb_desc->b_rts_use_shortpreamble = false;
+	tcb_desc->b_rts_use_shortgi = false;
+
+	if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
+		/* Use CTS-to-SELF in protection mode. */
+		tcb_desc->b_rts_enable = true;
+		tcb_desc->b_cts_enable = true;
+		tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
+	} else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
+		/* Use RTS-CTS in protection mode. */
+		tcb_desc->b_rts_enable = true;
+		tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
+	}
+
+}
+
+static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
+				   struct rtl_tcb_desc *tcb_desc)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+
+	if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
+		if (mac->opmode == NL80211_IFTYPE_STATION)
+			tcb_desc->ratr_index = 0;
+		else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
+			if (tcb_desc->b_multicast || tcb_desc->b_broadcast) {
+				tcb_desc->hw_rate =
+				    rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
+				tcb_desc->use_driver_rate = 1;
+			} else {
+				/* TODO */
+			}
+		}
+	}
+
+	if (rtlpriv->dm.b_useramask) {
+		/* TODO we will differentiate adhoc and station futrue  */
+		tcb_desc->mac_id = 0;
+
+		if ((mac->mode == WIRELESS_MODE_N_24G) ||
+		    (mac->mode == WIRELESS_MODE_N_5G)) {
+			tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
+		} else if (mac->mode & WIRELESS_MODE_G) {
+			tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
+		} else if (mac->mode & WIRELESS_MODE_B) {
+			tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
+		}
+	}
+
+}
+
+static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
+				      struct rtl_tcb_desc *tcb_desc)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+
+	tcb_desc->b_packet_bw = false;
+
+	if (!mac->bw_40 || !mac->ht_enable)
+		return;
+
+	if (tcb_desc->b_multicast || tcb_desc->b_broadcast)
+		return;
+
+	/*use legency rate, shall use 20MHz */
+	if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
+		return;
+
+	tcb_desc->b_packet_bw = true;
+}
+
+static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_phy *rtlphy = &(rtlpriv->phy);
+	u8 hw_rate;
+
+	if (get_rf_type(rtlphy) == RF_2T2R)
+		hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
+	else
+		hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
+
+	return hw_rate;
+}
+
+void rtl_get_tcb_desc(struct ieee80211_hw *hw,
+		      struct ieee80211_tx_info *info,
+		      struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+	struct ieee80211_rate *txrate;
+	u16 fc = le16_to_cpu(hdr->frame_control);
+
+	memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc));
+
+	if (ieee80211_is_data(fc)) {
+		txrate = ieee80211_get_tx_rate(hw, info);
+		tcb_desc->hw_rate = txrate->hw_value;
+
+		/*
+		 *we set data rate RTL_RC_CCK_RATE1M
+		 *in rtl_rc.c   if skb is special data or
+		 *mgt which need low data rate.
+		 */
+
+		/*
+		 *So tcb_desc->hw_rate is just used for
+		 *special data and mgt frames
+		 */
+		if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) {
+			tcb_desc->use_driver_rate = true;
+			tcb_desc->ratr_index = 7;
+
+			tcb_desc->hw_rate =
+			    rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+			tcb_desc->disable_ratefallback = 1;
+		} else {
+			/*
+			 *because hw will nerver use hw_rate
+			 *when tcb_desc->use_driver_rate = false
+			 *so we never set highest N rate here,
+			 *and N rate will all be controled by FW
+			 *when tcb_desc->use_driver_rate = false
+			 */
+			if (rtlmac->ht_enable) {
+				tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
+			} else {
+				if (rtlmac->mode == WIRELESS_MODE_B) {
+					tcb_desc->hw_rate =
+					   rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
+				} else {
+					tcb_desc->hw_rate =
+					   rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
+				}
+			}
+		}
+
+		if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
+			tcb_desc->b_multicast = 1;
+		else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
+			tcb_desc->b_broadcast = 1;
+
+		_rtl_txrate_selectmode(hw, tcb_desc);
+		_rtl_query_bandwidth_mode(hw, tcb_desc);
+		_rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
+		_rtl_query_shortgi(hw, tcb_desc, info);
+		_rtl_query_protection_mode(hw, tcb_desc, info);
+	} else {
+		tcb_desc->use_driver_rate = true;
+		tcb_desc->ratr_index = 7;
+		tcb_desc->disable_ratefallback = 1;
+		tcb_desc->mac_id = 0;
+
+		tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
+	}
+}
+EXPORT_SYMBOL(rtl_get_tcb_desc);
+
+bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+	u16 fc = le16_to_cpu(hdr->frame_control);
+
+	if (ieee80211_is_auth(fc)) {
+		RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
+		rtl_ips_nic_on(hw);
+
+		mac->link_state = MAC80211_LINKING;
+	}
+
+	return true;
+}
+
+bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
+{
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	u16 fc = le16_to_cpu(hdr->frame_control);
+	u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
+	u8 category;
+
+	if (!ieee80211_is_action(fc))
+		return true;
+
+	category = *act;
+	act++;
+	switch (category) {
+	case ACT_CAT_BA:
+		switch (*act) {
+		case ACT_ADDBAREQ:
+			if (mac->act_scanning)
+				return false;
+
+			RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
+				 ("%s ACT_ADDBAREQ From :" MAC_FMT "\n",
+				  is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
+			break;
+		case ACT_ADDBARSP:
+			RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
+				 ("%s ACT_ADDBARSP From :" MAC_FMT "\n",
+				  is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
+			break;
+		case ACT_DELBA:
+			RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
+				 ("ACT_ADDBADEL From :" MAC_FMT "\n",
+				  MAC_ARG(hdr->addr2)));
+			break;
+		}
+		break;
+	default:
+		break;
+	}
+
+	return true;
+}
+
+/*should call before software enc*/
+u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
+	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
+	u16 fc = le16_to_cpu(hdr->frame_control);
+	u16 ether_type;
+	u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
+	const struct iphdr *ip;
+
+	if (!ieee80211_is_data(fc))
+		goto end;
+
+	if (ieee80211_is_nullfunc(fc))
+		return true;
+
+	ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
+			      SNAP_SIZE + PROTOC_TYPE_SIZE);
+	ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
+	ether_type = ntohs(ether_type);
+
+	if (ETH_P_IP == ether_type) {
+		if (IPPROTO_UDP == ip->protocol) {
+			struct udphdr *udp = (struct udphdr *)((u8 *) ip +
+							       (ip->ihl << 2));
+			if (((((u8 *) udp)[1] == 68) &&
+			     (((u8 *) udp)[3] == 67)) ||
+			    ((((u8 *) udp)[1] == 67) &&
+			     (((u8 *) udp)[3] == 68))) {
+				/*
+				 * 68 : UDP BOOTP client
+				 * 67 : UDP BOOTP server
+				 */
+				RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
+					 DBG_DMESG, ("dhcp %s !!\n",
+						     (is_tx) ? "Tx" : "Rx"));
+
+				if (is_tx) {
+					rtl_lps_leave(hw);
+					ppsc->last_delaylps_stamp_jiffies =
+					    jiffies;
+				}
+
+				return true;
+			}
+		}
+	} else if (ETH_P_ARP == ether_type) {
+		if (is_tx) {
+			rtl_lps_leave(hw);
+			ppsc->last_delaylps_stamp_jiffies = jiffies;
+		}
+
+		return true;
+	} else if (ETH_P_PAE == ether_type) {
+		RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
+			 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
+
+		if (is_tx) {
+			rtl_lps_leave(hw);
+			ppsc->last_delaylps_stamp_jiffies = jiffies;
+		}
+
+		return true;
+	} else if (0x86DD == ether_type) {
+		return true;
+	}
+
+end:
+	return false;
+}
+
+/*********************************************************
+ *
+ * functions called by core.c
+ *
+ *********************************************************/
+int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_tid_data *tid_data;
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+
+	RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
+		 ("on ra = %pM tid = %d\n", ra, tid));
+
+	if (unlikely(tid >= MAX_TID_COUNT))
+		return -EINVAL;
+
+	if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+			 ("Start AGG when state is not RTL_AGG_OFF !\n"));
+		return -ENXIO;
+	}
+
+	tid_data = &mac->tids[tid];
+	*ssn = SEQ_TO_SN(tid_data->seq_number);
+
+	RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
+		 ("HW queue is empty tid:%d\n", tid));
+	tid_data->agg.agg_state = RTL_AGG_ON;
+
+	ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid);
+
+	return 0;
+}
+
+int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid)
+{
+	int ssn = -1;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
+	struct rtl_tid_data *tid_data;
+
+	if (!ra) {
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
+		return -EINVAL;
+	}
+
+	if (unlikely(tid >= MAX_TID_COUNT))
+		return -EINVAL;
+
+	if (mac->tids[tid].agg.agg_state != RTL_AGG_ON)
+		RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
+			 ("Stopping AGG while state not ON or starting\n"));
+
+	tid_data = &mac->tids[tid];
+	ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
+
+	mac->tids[tid].agg.agg_state = RTL_AGG_OFF;
+
+	ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid);
+
+	return 0;
+}
+
+/*********************************************************
+ *
+ * wq & timer callback functions
+ *
+ *********************************************************/
+void rtl_watchdog_wq_callback(void *data)
+{
+	struct rtl_works *rtlworks = container_of_dwork_rtl(data,
+							    struct rtl_works,
+							    watchdog_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));
+
+	bool b_busytraffic = false;
+	bool b_higher_busytraffic = false;
+	bool b_higher_busyrxtraffic = false;
+	bool b_higher_busytxtraffic = false;
+
+	u8 idx = 0;
+	u32 rx_cnt_inp4eriod = 0;
+	u32 tx_cnt_inp4eriod = 0;
+	u32 aver_rx_cnt_inperiod = 0;
+	u32 aver_tx_cnt_inperiod = 0;
+
+	bool benter_ps = false;
+
+	if (is_hal_stop(rtlhal))
+		return;
+
+	/* <1> Determine if action frame is allowed */
+	if (mac->link_state > MAC80211_NOLINK) {
+		if (mac->cnt_after_linked < 20)
+			mac->cnt_after_linked++;
+	} else {
+		mac->cnt_after_linked = 0;
+	}
+
+	/* <2> DM */
+	rtlpriv->cfg->ops->dm_watchdog(hw);
+
+	/*
+	 *<3> to check if traffic busy, if
+	 * busytraffic we don't change channel
+	 */
+	if (mac->link_state >= MAC80211_LINKED) {
+
+		/* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
+		for (idx = 0; idx <= 2; idx++) {
+			rtlpriv->link_info.num_rx_in4period[idx] =
+			    rtlpriv->link_info.num_rx_in4period[idx + 1];
+			rtlpriv->link_info.num_tx_in4period[idx] =
+			    rtlpriv->link_info.num_tx_in4period[idx + 1];
+		}
+		rtlpriv->link_info.num_rx_in4period[3] =
+		    rtlpriv->link_info.num_rx_inperiod;
+		rtlpriv->link_info.num_tx_in4period[3] =
+		    rtlpriv->link_info.num_tx_inperiod;
+		for (idx = 0; idx <= 3; idx++) {
+			rx_cnt_inp4eriod +=
+			    rtlpriv->link_info.num_rx_in4period[idx];
+			tx_cnt_inp4eriod +=
+			    rtlpriv->link_info.num_tx_in4period[idx];
+		}
+		aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
+		aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
+
+		/* (2) check traffic busy */
+		if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
+			b_busytraffic = true;
+
+		/* Higher Tx/Rx data. */
+		if (aver_rx_cnt_inperiod > 4000 ||
+		    aver_tx_cnt_inperiod > 4000) {
+			b_higher_busytraffic = true;
+
+			/* Extremely high Rx data. */
+			if (aver_rx_cnt_inperiod > 5000)
+				b_higher_busyrxtraffic = true;
+			else
+				b_higher_busytxtraffic = false;
+		}
+
+		if (((rtlpriv->link_info.num_rx_inperiod +
+		      rtlpriv->link_info.num_tx_inperiod) > 8) ||
+		    (rtlpriv->link_info.num_rx_inperiod > 2))
+			benter_ps = false;
+		else
+			benter_ps = true;
+
+		/* LeisurePS only work in infra mode. */
+		if (benter_ps)
+			rtl_lps_enter(hw);
+		else
+			rtl_lps_leave(hw);
+	}
+
+	rtlpriv->link_info.num_rx_inperiod = 0;
+	rtlpriv->link_info.num_tx_inperiod = 0;
+
+	rtlpriv->link_info.b_busytraffic = b_busytraffic;
+	rtlpriv->link_info.b_higher_busytraffic = b_higher_busytraffic;
+	rtlpriv->link_info.b_higher_busyrxtraffic = b_higher_busyrxtraffic;
+
+}
+
+void rtl_watch_dog_timer_callback(unsigned long data)
+{
+	struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	queue_delayed_work(rtlpriv->works.rtl_wq,
+			   &rtlpriv->works.watchdog_wq, 0);
+
+	mod_timer(&rtlpriv->works.watchdog_timer,
+		  jiffies + MSECS(RTL_WATCH_DOG_TIME));
+}
+
+/*********************************************************
+ *
+ * sysfs functions
+ *
+ *********************************************************/
+static ssize_t rtl_show_debug_level(struct device *d,
+				    struct device_attribute *attr, char *buf)
+{
+	struct ieee80211_hw *hw = dev_get_drvdata(d);
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+
+	return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
+}
+
+static ssize_t rtl_store_debug_level(struct device *d,
+				     struct device_attribute *attr,
+				     const char *buf, size_t count)
+{
+	struct ieee80211_hw *hw = dev_get_drvdata(d);
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	unsigned long val;
+	int ret;
+
+	ret = strict_strtoul(buf, 0, &val);
+	if (ret) {
+		printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
+	} else {
+		rtlpriv->dbg.global_debuglevel = val;
+		printk(KERN_DEBUG "debuglevel:%x\n",
+		       rtlpriv->dbg.global_debuglevel);
+	}
+
+	return strnlen(buf, count);
+}
+
+static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
+		   rtl_show_debug_level, rtl_store_debug_level);
+
+static struct attribute *rtl_sysfs_entries[] = {
+
+	&dev_attr_debug_level.attr,
+
+	NULL
+};
+
+/*
+ * "name" is folder name witch will be
+ * put in device directory like :
+ * sys/devices/pci0000:00/0000:00:1c.4/
+ * 0000:06:00.0/rtl_sysfs
+ */
+struct attribute_group rtl_attribute_group = {
+	.name = "rtlsysfs",
+	.attrs = rtl_sysfs_entries,
+};
+
+MODULE_AUTHOR("lizhaoming	<chaoming_li@realsil.com.cn>");
+MODULE_AUTHOR("Realtek WlanFAE	<wlanfae@realtek.com>");
+MODULE_AUTHOR("Larry Finger	<Larry.FInger@lwfinger.net>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
+
+static int __init rtl_core_module_init(void)
+{
+	return 0;
+}
+
+static void __exit rtl_core_module_exit(void)
+{
+}
+
+module_init(rtl_core_module_init);
+module_exit(rtl_core_module_exit);