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kernel/linux-rt-4.4.41/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c 20.9 KB
5113f6f70   김현기   kernel add
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  /******************************************************************************
   *
   * Copyright(c) 2009-2012  Realtek Corporation. All rights reserved.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of version 2 of the GNU General Public License as
   * published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
   *
   * The full GNU General Public License is included in this distribution in the
   * file called 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 "../usb.h"
  #include "../ps.h"
  #include "../base.h"
  #include "reg.h"
  #include "def.h"
  #include "phy.h"
  #include "rf.h"
  #include "dm.h"
  #include "mac.h"
  #include "trx.h"
  #include "../rtl8192c/fw_common.h"
  
  static int _ConfigVerTOutEP(struct ieee80211_hw *hw)
  {
  	u8 ep_cfg, txqsele;
  	u8 ep_nums = 0;
  
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  
  	rtlusb->out_queue_sel = 0;
  	ep_cfg = rtl_read_byte(rtlpriv, REG_TEST_SIE_OPTIONAL);
  	ep_cfg = (ep_cfg & USB_TEST_EP_MASK) >> USB_TEST_EP_SHIFT;
  	switch (ep_cfg)	{
  	case 0:		/* 2 bulk OUT, 1 bulk IN */
  	case 3:
  		rtlusb->out_queue_sel  = TX_SELE_HQ | TX_SELE_LQ;
  		ep_nums = 2;
  		break;
  	case 1:	/* 1 bulk IN/OUT => map all endpoint to Low queue */
  	case 2:	/* 1 bulk IN, 1 bulk OUT => map all endpoint to High queue */
  		txqsele = rtl_read_byte(rtlpriv, REG_TEST_USB_TXQS);
  		if (txqsele & 0x0F) /* /map all endpoint to High queue */
  			rtlusb->out_queue_sel =  TX_SELE_HQ;
  		else if (txqsele&0xF0) /* map all endpoint to Low queue */
  			rtlusb->out_queue_sel =  TX_SELE_LQ;
  		ep_nums = 1;
  		break;
  	default:
  		break;
  	}
  	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
  }
  
  static int _ConfigVerNOutEP(struct ieee80211_hw *hw)
  {
  	u8 ep_cfg;
  	u8 ep_nums = 0;
  
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  
  	rtlusb->out_queue_sel = 0;
  	/* Normal and High queue */
  	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 1));
  	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  		rtlusb->out_queue_sel |= TX_SELE_HQ;
  		ep_nums++;
  	}
  	if ((ep_cfg >> USB_NORMAL_SIE_EP_SHIFT) & USB_NORMAL_SIE_EP_MASK) {
  		rtlusb->out_queue_sel |= TX_SELE_NQ;
  		ep_nums++;
  	}
  	/* Low queue */
  	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 2));
  	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  		rtlusb->out_queue_sel |= TX_SELE_LQ;
  		ep_nums++;
  	}
  	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
  }
  
  static void _TwoOutEpMapping(struct ieee80211_hw *hw, bool bIsChipB,
  			     bool  bwificfg, struct rtl_ep_map *ep_map)
  {
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  
  	if (bwificfg) { /* for WMM */
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  			 "USB Chip-B & WMM Setting.....
  ");
  		ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
  		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VO] = 2;
  		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
  	} else { /* typical setting */
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  			 "USB typical Setting.....
  ");
  		ep_map->ep_mapping[RTL_TXQ_BE]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
  		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
  		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
  	}
  }
  
  static void _ThreeOutEpMapping(struct ieee80211_hw *hw, bool  bwificfg,
  			       struct rtl_ep_map *ep_map)
  {
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  	if (bwificfg) { /* for WMM */
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  			 "USB 3EP Setting for WMM.....
  ");
  		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
  		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
  		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
  	} else { /* typical setting */
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  			 "USB 3EP Setting for typical.....
  ");
  		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
  		ep_map->ep_mapping[RTL_TXQ_BK]	= 5;
  		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
  		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
  		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
  	}
  }
  
  static void _OneOutEpMapping(struct ieee80211_hw *hw, struct rtl_ep_map *ep_map)
  {
  	ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
  	ep_map->ep_mapping[RTL_TXQ_BK]	= 2;
  	ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
  	ep_map->ep_mapping[RTL_TXQ_VO] = 2;
  	ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  	ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  	ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
  }
  static int _out_ep_mapping(struct ieee80211_hw *hw)
  {
  	int err = 0;
  	bool bIsChipN, bwificfg = false;
  	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  	struct rtl_ep_map *ep_map = &(rtlusb->ep_map);
  
  	bIsChipN = IS_NORMAL_CHIP(rtlhal->version);
  	switch (rtlusb->out_ep_nums) {
  	case 2:
  		_TwoOutEpMapping(hw, bIsChipN, bwificfg, ep_map);
  		break;
  	case 3:
  		/* Test chip doesn't support three out EPs. */
  		if (!bIsChipN) {
  			err  =  -EINVAL;
  			goto err_out;
  		}
  		_ThreeOutEpMapping(hw, bIsChipN, ep_map);
  		break;
  	case 1:
  		_OneOutEpMapping(hw, ep_map);
  		break;
  	default:
  		err  =  -EINVAL;
  		break;
  	}
  err_out:
  	return err;
  
  }
  /* endpoint mapping */
  int  rtl8192cu_endpoint_mapping(struct ieee80211_hw *hw)
  {
  	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
  	int error = 0;
  	if (likely(IS_NORMAL_CHIP(rtlhal->version)))
  		error = _ConfigVerNOutEP(hw);
  	else
  		error = _ConfigVerTOutEP(hw);
  	if (error)
  		goto err_out;
  	error = _out_ep_mapping(hw);
  	if (error)
  		goto err_out;
  err_out:
  	return error;
  }
  
  u16 rtl8192cu_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
  {
  	u16 hw_queue_index;
  
  	if (unlikely(ieee80211_is_beacon(fc))) {
  		hw_queue_index = RTL_TXQ_BCN;
  		goto out;
  	}
  	if (ieee80211_is_mgmt(fc)) {
  		hw_queue_index = RTL_TXQ_MGT;
  		goto out;
  	}
  	switch (mac80211_queue_index) {
  	case 0:
  		hw_queue_index = RTL_TXQ_VO;
  		break;
  	case 1:
  		hw_queue_index = RTL_TXQ_VI;
  		break;
  	case 2:
  		hw_queue_index = RTL_TXQ_BE;
  		break;
  	case 3:
  		hw_queue_index = RTL_TXQ_BK;
  		break;
  	default:
  		hw_queue_index = RTL_TXQ_BE;
  		RT_ASSERT(false, "QSLT_BE queue, skb_queue:%d
  ",
  			  mac80211_queue_index);
  		break;
  	}
  out:
  	return hw_queue_index;
  }
  
  static enum rtl_desc_qsel _rtl8192cu_mq_to_descq(struct ieee80211_hw *hw,
  					 __le16 fc, u16 mac80211_queue_index)
  {
  	enum rtl_desc_qsel qsel;
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  
  	if (unlikely(ieee80211_is_beacon(fc))) {
  		qsel = QSLT_BEACON;
  		goto out;
  	}
  	if (ieee80211_is_mgmt(fc)) {
  		qsel = QSLT_MGNT;
  		goto out;
  	}
  	switch (mac80211_queue_index) {
  	case 0:	/* VO */
  		qsel = QSLT_VO;
  		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
  			 "VO queue, set qsel = 0x%x
  ", QSLT_VO);
  		break;
  	case 1:	/* VI */
  		qsel = QSLT_VI;
  		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
  			 "VI queue, set qsel = 0x%x
  ", QSLT_VI);
  		break;
  	case 3:	/* BK */
  		qsel = QSLT_BK;
  		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
  			 "BK queue, set qsel = 0x%x
  ", QSLT_BK);
  		break;
  	case 2:	/* BE */
  	default:
  		qsel = QSLT_BE;
  		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
  			 "BE queue, set qsel = 0x%x
  ", QSLT_BE);
  		break;
  	}
  out:
  	return qsel;
  }
  
  /* =============================================================== */
  
  /*----------------------------------------------------------------------
   *
   *	Rx handler
   *
   *---------------------------------------------------------------------- */
  bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
  			   struct rtl_stats *stats,
  			   struct ieee80211_rx_status *rx_status,
  			   u8 *pdesc, struct sk_buff *skb)
  {
  	struct rx_fwinfo_92c *p_drvinfo;
  	struct rx_desc_92c *p_desc = (struct rx_desc_92c *)pdesc;
  	u32 phystatus = GET_RX_DESC_PHY_STATUS(pdesc);
  
  	stats->length = (u16) GET_RX_DESC_PKT_LEN(pdesc);
  	stats->rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(pdesc) *
  				 RX_DRV_INFO_SIZE_UNIT;
  	stats->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03);
  	stats->icv = (u16) GET_RX_DESC_ICV(pdesc);
  	stats->crc = (u16) GET_RX_DESC_CRC32(pdesc);
  	stats->hwerror = (stats->crc | stats->icv);
  	stats->decrypted = !GET_RX_DESC_SWDEC(pdesc);
  	stats->rate = (u8) GET_RX_DESC_RX_MCS(pdesc);
  	stats->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc);
  	stats->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1);
  	stats->isfirst_ampdu = (bool)((GET_RX_DESC_PAGGR(pdesc) == 1)
  				   && (GET_RX_DESC_FAGGR(pdesc) == 1));
  	stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
  	stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
  	stats->is_ht = (bool)GET_RX_DESC_RX_HT(pdesc);
  	rx_status->freq = hw->conf.chandef.chan->center_freq;
  	rx_status->band = hw->conf.chandef.chan->band;
  	if (GET_RX_DESC_CRC32(pdesc))
  		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
  	if (!GET_RX_DESC_SWDEC(pdesc))
  		rx_status->flag |= RX_FLAG_DECRYPTED;
  	if (GET_RX_DESC_BW(pdesc))
  		rx_status->flag |= RX_FLAG_40MHZ;
  	if (GET_RX_DESC_RX_HT(pdesc))
  		rx_status->flag |= RX_FLAG_HT;
  	rx_status->flag |= RX_FLAG_MACTIME_START;
  	if (stats->decrypted)
  		rx_status->flag |= RX_FLAG_DECRYPTED;
  	rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht,
  						   false, stats->rate);
  	rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
  	if (phystatus) {
  		p_drvinfo = (struct rx_fwinfo_92c *)(skb->data +
  						     stats->rx_bufshift);
  		rtl92c_translate_rx_signal_stuff(hw, skb, stats, p_desc,
  						 p_drvinfo);
  	}
  	/*rx_status->qual = stats->signal; */
  	rx_status->signal = stats->recvsignalpower + 10;
  	return true;
  }
  
  #define RTL_RX_DRV_INFO_UNIT		8
  
  static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
  {
  	struct ieee80211_rx_status *rx_status =
  		 (struct ieee80211_rx_status *)IEEE80211_SKB_RXCB(skb);
  	u32 skb_len, pkt_len, drvinfo_len;
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  	u8 *rxdesc;
  	struct rtl_stats stats = {
  		.signal = 0,
  		.rate = 0,
  	};
  	struct rx_fwinfo_92c *p_drvinfo;
  	bool bv;
  	__le16 fc;
  	struct ieee80211_hdr *hdr;
  
  	memset(rx_status, 0, sizeof(*rx_status));
  	rxdesc	= skb->data;
  	skb_len	= skb->len;
  	drvinfo_len = (GET_RX_DESC_DRVINFO_SIZE(rxdesc) * RTL_RX_DRV_INFO_UNIT);
  	pkt_len		= GET_RX_DESC_PKT_LEN(rxdesc);
  	/* TODO: Error recovery. drop this skb or something. */
  	WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
  	stats.length = (u16) GET_RX_DESC_PKT_LEN(rxdesc);
  	stats.rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(rxdesc) *
  				RX_DRV_INFO_SIZE_UNIT;
  	stats.rx_bufshift = (u8) (GET_RX_DESC_SHIFT(rxdesc) & 0x03);
  	stats.icv = (u16) GET_RX_DESC_ICV(rxdesc);
  	stats.crc = (u16) GET_RX_DESC_CRC32(rxdesc);
  	stats.hwerror = (stats.crc | stats.icv);
  	stats.decrypted = !GET_RX_DESC_SWDEC(rxdesc);
  	stats.rate = (u8) GET_RX_DESC_RX_MCS(rxdesc);
  	stats.shortpreamble = (u16) GET_RX_DESC_SPLCP(rxdesc);
  	stats.isampdu = (bool) ((GET_RX_DESC_PAGGR(rxdesc) == 1)
  				   && (GET_RX_DESC_FAGGR(rxdesc) == 1));
  	stats.timestamp_low = GET_RX_DESC_TSFL(rxdesc);
  	stats.rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(rxdesc);
  	stats.is_ht = (bool)GET_RX_DESC_RX_HT(rxdesc);
  	/* TODO: is center_freq changed when doing scan? */
  	/* TODO: Shall we add protection or just skip those two step? */
  	rx_status->freq = hw->conf.chandef.chan->center_freq;
  	rx_status->band = hw->conf.chandef.chan->band;
  	if (GET_RX_DESC_CRC32(rxdesc))
  		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
  	if (!GET_RX_DESC_SWDEC(rxdesc))
  		rx_status->flag |= RX_FLAG_DECRYPTED;
  	if (GET_RX_DESC_BW(rxdesc))
  		rx_status->flag |= RX_FLAG_40MHZ;
  	if (GET_RX_DESC_RX_HT(rxdesc))
  		rx_status->flag |= RX_FLAG_HT;
  	/* Data rate */
  	rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats.is_ht,
  						   false, stats.rate);
  	/*  There is a phy status after this rx descriptor. */
  	if (GET_RX_DESC_PHY_STATUS(rxdesc)) {
  		p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
  		rtl92c_translate_rx_signal_stuff(hw, skb, &stats,
  				 (struct rx_desc_92c *)rxdesc, p_drvinfo);
  	}
  	skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
  	hdr = (struct ieee80211_hdr *)(skb->data);
  	fc = hdr->frame_control;
  	bv = ieee80211_is_probe_resp(fc);
  	if (bv)
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  			 "Got probe response frame
  ");
  	if (ieee80211_is_beacon(fc))
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got beacon frame
  ");
  	if (ieee80211_is_data(fc))
  		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got data frame
  ");
  	RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  		 "Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X
  ",
  		 fc,
  		 (u32)hdr->addr1[0], (u32)hdr->addr1[1],
  		 (u32)hdr->addr1[2], (u32)hdr->addr1[3],
  		 (u32)hdr->addr1[4], (u32)hdr->addr1[5]);
  	memcpy(IEEE80211_SKB_RXCB(skb), rx_status, sizeof(*rx_status));
  	ieee80211_rx(hw, skb);
  }
  
  void  rtl8192cu_rx_hdl(struct ieee80211_hw *hw, struct sk_buff * skb)
  {
  	_rtl_rx_process(hw, skb);
  }
  
  void rtl8192c_rx_segregate_hdl(
  	struct ieee80211_hw *hw,
  	struct sk_buff *skb,
  	struct sk_buff_head *skb_list)
  {
  }
  
  /*----------------------------------------------------------------------
   *
   *	Tx handler
   *
   *---------------------------------------------------------------------- */
  void rtl8192c_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb)
  {
  }
  
  int rtl8192c_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
  			 struct sk_buff *skb)
  {
  	return 0;
  }
  
  struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *hw,
  					   struct sk_buff_head *list)
  {
  	return skb_dequeue(list);
  }
  
  /*======================================== trx ===============================*/
  
  static void _rtl_fill_usb_tx_desc(u8 *txdesc)
  {
  	SET_TX_DESC_OWN(txdesc, 1);
  	SET_TX_DESC_LAST_SEG(txdesc, 1);
  	SET_TX_DESC_FIRST_SEG(txdesc, 1);
  }
  /**
   *	For HW recovery information
   */
  static void _rtl_tx_desc_checksum(u8 *txdesc)
  {
  	u16 *ptr = (u16 *)txdesc;
  	u16	checksum = 0;
  	u32 index;
  
  	/* Clear first */
  	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, 0);
  	for (index = 0; index < 16; index++)
  		checksum = checksum ^ (*(ptr + index));
  	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, checksum);
  }
  
  void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
  			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
  			  u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
  			  struct ieee80211_sta *sta,
  			  struct sk_buff *skb,
  			  u8 queue_index,
  			  struct rtl_tcb_desc *tcb_desc)
  {
  	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 defaultadapter = true;
  	u8 *qc = ieee80211_get_qos_ctl(hdr);
  	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
  	u16 seq_number;
  	__le16 fc = hdr->frame_control;
  	u8 rate_flag = info->control.rates[0].flags;
  	u16 pktlen = skb->len;
  	enum rtl_desc_qsel fw_qsel = _rtl8192cu_mq_to_descq(hw, fc,
  						skb_get_queue_mapping(skb));
  	u8 *txdesc;
  
  	seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
  	rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
  	txdesc = (u8 *)skb_push(skb, RTL_TX_HEADER_SIZE);
  	memset(txdesc, 0, RTL_TX_HEADER_SIZE);
  	SET_TX_DESC_PKT_SIZE(txdesc, pktlen);
  	SET_TX_DESC_LINIP(txdesc, 0);
  	SET_TX_DESC_PKT_OFFSET(txdesc, RTL_DUMMY_OFFSET);
  	SET_TX_DESC_OFFSET(txdesc, RTL_TX_HEADER_SIZE);
  	SET_TX_DESC_TX_RATE(txdesc, tcb_desc->hw_rate);
  	if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
  		SET_TX_DESC_DATA_SHORTGI(txdesc, 1);
  	if (mac->tids[tid].agg.agg_state == RTL_AGG_ON &&
  		    info->flags & IEEE80211_TX_CTL_AMPDU) {
  		SET_TX_DESC_AGG_ENABLE(txdesc, 1);
  		SET_TX_DESC_MAX_AGG_NUM(txdesc, 0x14);
  	} else {
  		SET_TX_DESC_AGG_BREAK(txdesc, 1);
  	}
  	SET_TX_DESC_SEQ(txdesc, seq_number);
  	SET_TX_DESC_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable &&
  			       !tcb_desc->cts_enable) ? 1 : 0));
  	SET_TX_DESC_HW_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable ||
  				  tcb_desc->cts_enable) ? 1 : 0));
  	SET_TX_DESC_CTS2SELF(txdesc, ((tcb_desc->cts_enable) ? 1 : 0));
  	SET_TX_DESC_RTS_STBC(txdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
  	SET_TX_DESC_RTS_RATE(txdesc, tcb_desc->rts_rate);
  	SET_TX_DESC_RTS_BW(txdesc, 0);
  	SET_TX_DESC_RTS_SC(txdesc, tcb_desc->rts_sc);
  	SET_TX_DESC_RTS_SHORT(txdesc,
  			      ((tcb_desc->rts_rate <= DESC_RATE54M) ?
  			       (tcb_desc->rts_use_shortpreamble ? 1 : 0)
  			       : (tcb_desc->rts_use_shortgi ? 1 : 0)));
  	if (mac->bw_40) {
  		if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
  			SET_TX_DESC_DATA_BW(txdesc, 1);
  			SET_TX_DESC_DATA_SC(txdesc, 3);
  		} else if(rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH){
  			SET_TX_DESC_DATA_BW(txdesc, 1);
  			SET_TX_DESC_DATA_SC(txdesc, mac->cur_40_prime_sc);
  		} else {
  			SET_TX_DESC_DATA_BW(txdesc, 0);
  			SET_TX_DESC_DATA_SC(txdesc, 0);
  		}
  	} else {
  		SET_TX_DESC_DATA_BW(txdesc, 0);
  		SET_TX_DESC_DATA_SC(txdesc, 0);
  	}
  	rcu_read_lock();
  	sta = ieee80211_find_sta(mac->vif, mac->bssid);
  	if (sta) {
  		u8 ampdu_density = sta->ht_cap.ampdu_density;
  		SET_TX_DESC_AMPDU_DENSITY(txdesc, ampdu_density);
  	}
  	rcu_read_unlock();
  	if (info->control.hw_key) {
  		struct ieee80211_key_conf *keyconf = info->control.hw_key;
  		switch (keyconf->cipher) {
  		case WLAN_CIPHER_SUITE_WEP40:
  		case WLAN_CIPHER_SUITE_WEP104:
  		case WLAN_CIPHER_SUITE_TKIP:
  			SET_TX_DESC_SEC_TYPE(txdesc, 0x1);
  			break;
  		case WLAN_CIPHER_SUITE_CCMP:
  			SET_TX_DESC_SEC_TYPE(txdesc, 0x3);
  			break;
  		default:
  			SET_TX_DESC_SEC_TYPE(txdesc, 0x0);
  			break;
  		}
  	}
  	SET_TX_DESC_PKT_ID(txdesc, 0);
  	SET_TX_DESC_QUEUE_SEL(txdesc, fw_qsel);
  	SET_TX_DESC_DATA_RATE_FB_LIMIT(txdesc, 0x1F);
  	SET_TX_DESC_RTS_RATE_FB_LIMIT(txdesc, 0xF);
  	SET_TX_DESC_DISABLE_FB(txdesc, 0);
  	SET_TX_DESC_USE_RATE(txdesc, tcb_desc->use_driver_rate ? 1 : 0);
  	if (ieee80211_is_data_qos(fc)) {
  		if (mac->rdg_en) {
  			RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
  				 "Enable RDG function
  ");
  			SET_TX_DESC_RDG_ENABLE(txdesc, 1);
  			SET_TX_DESC_HTC(txdesc, 1);
  		}
  	}
  	if (rtlpriv->dm.useramask) {
  		SET_TX_DESC_RATE_ID(txdesc, tcb_desc->ratr_index);
  		SET_TX_DESC_MACID(txdesc, tcb_desc->mac_id);
  	} else {
  		SET_TX_DESC_RATE_ID(txdesc, 0xC + tcb_desc->ratr_index);
  		SET_TX_DESC_MACID(txdesc, tcb_desc->ratr_index);
  	}
  	if ((!ieee80211_is_data_qos(fc)) && ppsc->leisure_ps &&
  	      ppsc->fwctrl_lps) {
  		SET_TX_DESC_HWSEQ_EN(txdesc, 1);
  		SET_TX_DESC_PKT_ID(txdesc, 8);
  		if (!defaultadapter)
  			SET_TX_DESC_QOS(txdesc, 1);
  	}
  	if (ieee80211_has_morefrags(fc))
  		SET_TX_DESC_MORE_FRAG(txdesc, 1);
  	if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
  	    is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
  		SET_TX_DESC_BMC(txdesc, 1);
  	_rtl_fill_usb_tx_desc(txdesc);
  	_rtl_tx_desc_checksum(txdesc);
  	RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "==>
  ");
  }
  
  void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 * pDesc,
  			      u32 buffer_len, bool bIsPsPoll)
  {
  	/* Clear all status */
  	memset(pDesc, 0, RTL_TX_HEADER_SIZE);
  	SET_TX_DESC_FIRST_SEG(pDesc, 1); /* bFirstSeg; */
  	SET_TX_DESC_LAST_SEG(pDesc, 1); /* bLastSeg; */
  	SET_TX_DESC_OFFSET(pDesc, RTL_TX_HEADER_SIZE); /* Offset = 32 */
  	SET_TX_DESC_PKT_SIZE(pDesc, buffer_len); /* Buffer size + command hdr */
  	SET_TX_DESC_QUEUE_SEL(pDesc, QSLT_MGNT); /* Fixed queue of Mgnt queue */
  	/* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error
  	 * vlaue by Hw. */
  	if (bIsPsPoll) {
  		SET_TX_DESC_NAV_USE_HDR(pDesc, 1);
  	} else {
  		SET_TX_DESC_HWSEQ_EN(pDesc, 1); /* Hw set sequence number */
  		SET_TX_DESC_PKT_ID(pDesc, 0x100); /* set bit3 to 1. */
  	}
  	SET_TX_DESC_USE_RATE(pDesc, 1); /* use data rate which is set by Sw */
  	SET_TX_DESC_OWN(pDesc, 1);
  	SET_TX_DESC_TX_RATE(pDesc, DESC_RATE1M);
  	_rtl_tx_desc_checksum(pDesc);
  }
  
  void rtl92cu_tx_fill_cmddesc(struct ieee80211_hw *hw,
  			     u8 *pdesc, bool firstseg,
  			     bool lastseg, struct sk_buff *skb)
  {
  	struct rtl_priv *rtlpriv = rtl_priv(hw);
  	u8 fw_queue = QSLT_BEACON;
  	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
  	__le16 fc = hdr->frame_control;
  
  	memset((void *)pdesc, 0, RTL_TX_HEADER_SIZE);
  	if (firstseg)
  		SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE);
  	SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
  	SET_TX_DESC_SEQ(pdesc, 0);
  	SET_TX_DESC_LINIP(pdesc, 0);
  	SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
  	SET_TX_DESC_FIRST_SEG(pdesc, 1);
  	SET_TX_DESC_LAST_SEG(pdesc, 1);
  	SET_TX_DESC_RATE_ID(pdesc, 7);
  	SET_TX_DESC_MACID(pdesc, 0);
  	SET_TX_DESC_OWN(pdesc, 1);
  	SET_TX_DESC_PKT_SIZE(pdesc, (u16)skb->len);
  	SET_TX_DESC_FIRST_SEG(pdesc, 1);
  	SET_TX_DESC_LAST_SEG(pdesc, 1);
  	SET_TX_DESC_OFFSET(pdesc, 0x20);
  	SET_TX_DESC_USE_RATE(pdesc, 1);
  	if (!ieee80211_is_data_qos(fc)) {
  		SET_TX_DESC_HWSEQ_EN(pdesc, 1);
  		SET_TX_DESC_PKT_ID(pdesc, 8);
  	}
  	RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD, "H2C Tx Cmd Content",
  		      pdesc, RTL_TX_DESC_SIZE);
  }
  
  bool rtl92cu_cmd_send_packet(struct ieee80211_hw *hw, struct sk_buff *skb)
  {
  	return true;
  }