trx.c

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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 <[email protected]>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <[email protected]>
 *
 *****************************************************************************/

#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"

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.....\n");
        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.....\n");
        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.....\n");
        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.....\n");
        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\n",
              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\n", QSLT_VO);
        break;
    case 1: /* VI */
        qsel = QSLT_VI;
        RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
             "VI queue, set qsel = 0x%x\n", QSLT_VI);
        break;
    case 3: /* BK */
        qsel = QSLT_BK;
        RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
             "BK queue, set qsel = 0x%x\n", QSLT_BK);
        break;
    case 2: /* BE */
    default:
        qsel = QSLT_BE;
        RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
             "BE queue, set qsel = 0x%x\n", 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 *p_desc, struct sk_buff *skb)
{
    struct rx_fwinfo_92c *p_drvinfo;
    struct rx_desc_92c *pdesc = (struct rx_desc_92c *)p_desc;
    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->isampdu = (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);
    rx_status->freq = hw->conf.channel->center_freq;
    rx_status->band = hw->conf.channel->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_MPDU;
    if (stats->decrypted)
        rx_status->flag |= RX_FLAG_DECRYPTED;
    rx_status->rate_idx = rtlwifi_rate_mapping(hw,
                    (bool)GET_RX_DESC_RX_HT(pdesc),
                    (u8)GET_RX_DESC_RX_MCS(pdesc),
                    (bool)GET_RX_DESC_PAGGR(pdesc));
    rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
    if (phystatus) {
        p_drvinfo = (struct rx_fwinfo_92c *)(pdesc + RTL_RX_DESC_SIZE);
        rtl92c_translate_rx_signal_stuff(hw, skb, stats, pdesc,
                         p_drvinfo);
    }
    /*rx_status->qual = stats->signal; */
    rx_status->signal = stats->rssi + 10;
    /*rx_status->noise = -stats->noise; */
    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,
        .noise = -98,
        .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);
    /* TODO: is center_freq changed when doing scan? */
    /* TODO: Shall we add protection or just skip those two step? */
    rx_status->freq = hw->conf.channel->center_freq;
    rx_status->band = hw->conf.channel->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,
                    (bool)GET_RX_DESC_RX_HT(rxdesc),
                    (u8)GET_RX_DESC_RX_MCS(rxdesc),
                    (bool)GET_RX_DESC_PAGGR(rxdesc));
    /*  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\n");
    if (ieee80211_is_beacon(fc))
        RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got beacon frame\n");
    if (ieee80211_is_data(fc))
        RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got data frame\n");
    RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
         "Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X\n",
         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_irqsafe(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);
}
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,
              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 <= DESC92_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\n");
            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, "==>\n");
}

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, DESC92_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, DESC92_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;
}