/****************************************************************************** * * Copyright(c) 2009-2012 Realtek Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * 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 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park, * Hsinchu 300, Taiwan. * * Larry Finger * *****************************************************************************/ #include "../wifi.h" #include "../pci.h" #include "../base.h" #include "../stats.h" #include "reg.h" #include "def.h" #include "phy.h" #include "trx.h" #include "led.h" static u8 _rtl8723ae_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue) { __le16 fc = rtl_get_fc(skb); if (unlikely(ieee80211_is_beacon(fc))) return QSLT_BEACON; if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) return QSLT_MGNT; return skb->priority; } static void _rtl8723ae_query_rxphystatus(struct ieee80211_hw *hw, struct rtl_stats *pstatus, u8 *pdesc, struct rx_fwinfo_8723e *p_drvinfo, bool bpacket_match_bssid, bool bpacket_toself, bool packet_beacon) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv); struct phy_sts_cck_8723e_t *cck_buf; s8 rx_pwr_all, rx_pwr[4]; u8 rf_rx_num = 0, evm, pwdb_all; u8 i, max_spatial_stream; u32 rssi, total_rssi = 0; bool is_cck = pstatus->is_cck; /* Record it for next packet processing */ pstatus->packet_matchbssid = bpacket_match_bssid; pstatus->packet_toself = bpacket_toself; pstatus->packet_beacon = packet_beacon; pstatus->rx_mimo_sig_qual[0] = -1; pstatus->rx_mimo_sig_qual[1] = -1; if (is_cck) { u8 report, cck_highpwr; /* CCK Driver info Structure is not the same as OFDM packet. */ cck_buf = (struct phy_sts_cck_8723e_t *)p_drvinfo; /* (1)Hardware does not provide RSSI for CCK * (2)PWDB, Average PWDB cacluated by * hardware (for rate adaptive) */ if (ppsc->rfpwr_state == ERFON) cck_highpwr = (u8) rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2, BIT(9)); else cck_highpwr = false; if (!cck_highpwr) { u8 cck_agc_rpt = cck_buf->cck_agc_rpt; report = cck_buf->cck_agc_rpt & 0xc0; report = report >> 6; switch (report) { case 0x3: rx_pwr_all = -46 - (cck_agc_rpt & 0x3e); break; case 0x2: rx_pwr_all = -26 - (cck_agc_rpt & 0x3e); break; case 0x1: rx_pwr_all = -12 - (cck_agc_rpt & 0x3e); break; case 0x0: rx_pwr_all = 16 - (cck_agc_rpt & 0x3e); break; } } else { u8 cck_agc_rpt = cck_buf->cck_agc_rpt; report = p_drvinfo->cfosho[0] & 0x60; report = report >> 5; switch (report) { case 0x3: rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x2: rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x1: rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1); break; case 0x0: rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1); break; } } pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all); /* CCK gain is smaller than OFDM/MCS gain, * so we add gain diff. From experience, the val is 6 */ pwdb_all += 6; if (pwdb_all > 100) pwdb_all = 100; /* modify the offset to make the same * gain index with OFDM. */ if (pwdb_all > 34 && pwdb_all <= 42) pwdb_all -= 2; else if (pwdb_all > 26 && pwdb_all <= 34) pwdb_all -= 6; else if (pwdb_all > 14 && pwdb_all <= 26) pwdb_all -= 8; else if (pwdb_all > 4 && pwdb_all <= 14) pwdb_all -= 4; pstatus->rx_pwdb_all = pwdb_all; pstatus->recvsignalpower = rx_pwr_all; /* (3) Get Signal Quality (EVM) */ if (bpacket_match_bssid) { u8 sq; if (pstatus->rx_pwdb_all > 40) { sq = 100; } else { sq = cck_buf->sq_rpt; if (sq > 64) sq = 0; else if (sq < 20) sq = 100; else sq = ((64 - sq) * 100) / 44; } pstatus->signalquality = sq; pstatus->rx_mimo_sig_qual[0] = sq; pstatus->rx_mimo_sig_qual[1] = -1; } } else { rtlpriv->dm.rfpath_rxenable[0] = rtlpriv->dm.rfpath_rxenable[1] = true; /* (1)Get RSSI for HT rate */ for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) { /* we will judge RF RX path now. */ if (rtlpriv->dm.rfpath_rxenable[i]) rf_rx_num++; rx_pwr[i] = ((p_drvinfo->gain_trsw[i] & 0x3f)*2) - 110; /* Translate DBM to percentage. */ rssi = rtl_query_rxpwrpercentage(rx_pwr[i]); total_rssi += rssi; /* Get Rx snr value in DB */ rtlpriv->stats.rx_snr_db[i] = (p_drvinfo->rxsnr[i] / 2); /* Record Signal Strength for next packet */ if (bpacket_match_bssid) pstatus->rx_mimo_signalstrength[i] = (u8) rssi; } /* (2)PWDB, Average PWDB cacluated by * hardware (for rate adaptive) */ rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110; pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all); pstatus->rx_pwdb_all = pwdb_all; pstatus->rxpower = rx_pwr_all; pstatus->recvsignalpower = rx_pwr_all; /* (3)EVM of HT rate */ if (pstatus->is_ht && pstatus->rate >= DESC92_RATEMCS8 && pstatus->rate <= DESC92_RATEMCS15) max_spatial_stream = 2; else max_spatial_stream = 1; for (i = 0; i < max_spatial_stream; i++) { evm = rtl_evm_db_to_percentage(p_drvinfo->rxevm[i]); if (bpacket_match_bssid) { /* Fill value in RFD, Get the first * spatial stream only */ if (i == 0) pstatus->signalquality = (evm & 0xff); pstatus->rx_mimo_sig_qual[i] = (evm & 0xff); } } } /* UI BSS List signal strength(in percentage), * make it good looking, from 0~100. */ if (is_cck) pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw, pwdb_all)); else if (rf_rx_num != 0) pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw, total_rssi /= rf_rx_num)); } static void _rtl8723ae_translate_rx_signal_stuff(struct ieee80211_hw *hw, struct sk_buff *skb, struct rtl_stats *pstatus, u8 *pdesc, struct rx_fwinfo_8723e *p_drvinfo) { struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw)); struct ieee80211_hdr *hdr; u8 *tmp_buf; u8 *praddr; __le16 fc; u16 type; bool packet_matchbssid, packet_toself, packet_beacon = false; tmp_buf = skb->data + pstatus->rx_drvinfo_size + pstatus->rx_bufshift; hdr = (struct ieee80211_hdr *)tmp_buf; fc = hdr->frame_control; type = WLAN_FC_GET_TYPE(fc); praddr = hdr->addr1; packet_matchbssid = ((IEEE80211_FTYPE_CTL != type) && ether_addr_equal(mac->bssid, (le16_to_cpu(fc) & IEEE80211_FCTL_TODS) ? hdr->addr1 : (le16_to_cpu(fc) & IEEE80211_FCTL_FROMDS) ? hdr->addr2 : hdr->addr3) && (!pstatus->hwerror) && (!pstatus->crc) && (!pstatus->icv)); packet_toself = (packet_matchbssid && ether_addr_equal(praddr, rtlefuse->dev_addr)); if (ieee80211_is_beacon(fc)) packet_beacon = true; _rtl8723ae_query_rxphystatus(hw, pstatus, pdesc, p_drvinfo, packet_matchbssid, packet_toself, packet_beacon); rtl_process_phyinfo(hw, tmp_buf, pstatus); } bool rtl8723ae_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *status, struct ieee80211_rx_status *rx_status, u8 *pdesc, struct sk_buff *skb) { struct rx_fwinfo_8723e *p_drvinfo; struct ieee80211_hdr *hdr; u32 phystatus = GET_RX_DESC_PHYST(pdesc); status->length = (u16) GET_RX_DESC_PKT_LEN(pdesc); status->rx_drvinfo_size = (u8) GET_RX_DESC_DRV_INFO_SIZE(pdesc) * RX_DRV_INFO_SIZE_UNIT; status->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03); status->icv = (u16) GET_RX_DESC_ICV(pdesc); status->crc = (u16) GET_RX_DESC_CRC32(pdesc); status->hwerror = (status->crc | status->icv); status->decrypted = !GET_RX_DESC_SWDEC(pdesc); status->rate = (u8) GET_RX_DESC_RXMCS(pdesc); status->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc); status->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1); status->isfirst_ampdu = (bool) ((GET_RX_DESC_PAGGR(pdesc) == 1) && (GET_RX_DESC_FAGGR(pdesc) == 1)); status->timestamp_low = GET_RX_DESC_TSFL(pdesc); status->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc); status->is_ht = (bool)GET_RX_DESC_RXHT(pdesc); status->is_cck = RTL8723E_RX_HAL_IS_CCK_RATE(status->rate); rx_status->freq = hw->conf.chandef.chan->center_freq; rx_status->band = hw->conf.chandef.chan->band; if (status->crc) rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; if (status->rx_is40Mhzpacket) rx_status->flag |= RX_FLAG_40MHZ; if (status->is_ht) rx_status->flag |= RX_FLAG_HT; rx_status->flag |= RX_FLAG_MACTIME_START; /* hw will set status->decrypted true, if it finds the * frame is open data frame or mgmt frame. * Thus hw will not decrypt a robust managment frame * for IEEE80211w but still set status->decrypted * true, so here we should set it back to undecrypted * for IEEE80211w frame, and mac80211 sw will help * to decrypt it */ if (status->decrypted) { hdr = (struct ieee80211_hdr *)(skb->data + status->rx_drvinfo_size + status->rx_bufshift); if (!hdr) { /* during testing, hdr could be NULL here */ return false; } if ((_ieee80211_is_robust_mgmt_frame(hdr)) && (ieee80211_has_protected(hdr->frame_control))) rx_status->flag &= ~RX_FLAG_DECRYPTED; else rx_status->flag |= RX_FLAG_DECRYPTED; } /* rate_idx: index of data rate into band's * supported rates or MCS index if HT rates * are use (RX_FLAG_HT) */ rx_status->rate_idx = rtlwifi_rate_mapping(hw, status->is_ht, status->rate, false); rx_status->mactime = status->timestamp_low; if (phystatus == true) { p_drvinfo = (struct rx_fwinfo_8723e *)(skb->data + status->rx_bufshift); _rtl8723ae_translate_rx_signal_stuff(hw, skb, status, pdesc, p_drvinfo); } /*rx_status->qual = status->signal; */ rx_status->signal = status->recvsignalpower + 10; return true; } void rtl8723ae_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 hw_queue, struct rtl_tcb_desc *ptcdesc) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); bool defaultadapter = true; u8 *pdesc = pdesc_tx; u16 seq_number; __le16 fc = hdr->frame_control; u8 fw_qsel = _rtl8723ae_map_hwqueue_to_fwqueue(skb, hw_queue); bool firstseg = ((hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0); bool lastseg = ((hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) == 0); dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); u8 bw_40 = 0; if (pci_dma_mapping_error(rtlpci->pdev, mapping)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "DMA mapping error"); return; } if (mac->opmode == NL80211_IFTYPE_STATION) { bw_40 = mac->bw_40; } else if (mac->opmode == NL80211_IFTYPE_AP || mac->opmode == NL80211_IFTYPE_ADHOC) { if (sta) bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40; } seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4; rtl_get_tcb_desc(hw, info, sta, skb, ptcdesc); CLEAR_PCI_TX_DESC_CONTENT(pdesc, sizeof(struct tx_desc_8723e)); if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) { firstseg = true; lastseg = true; } if (firstseg) { SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN); SET_TX_DESC_TX_RATE(pdesc, ptcdesc->hw_rate); if (ptcdesc->use_shortgi || ptcdesc->use_shortpreamble) SET_TX_DESC_DATA_SHORTGI(pdesc, 1); if (info->flags & IEEE80211_TX_CTL_AMPDU) { SET_TX_DESC_AGG_BREAK(pdesc, 1); SET_TX_DESC_MAX_AGG_NUM(pdesc, 0x14); } SET_TX_DESC_SEQ(pdesc, seq_number); SET_TX_DESC_RTS_ENABLE(pdesc, ((ptcdesc->rts_enable && !ptcdesc-> cts_enable) ? 1 : 0)); SET_TX_DESC_HW_RTS_ENABLE(pdesc, ((ptcdesc->rts_enable || ptcdesc->cts_enable) ? 1 : 0)); SET_TX_DESC_CTS2SELF(pdesc, ((ptcdesc->cts_enable) ? 1 : 0)); SET_TX_DESC_RTS_STBC(pdesc, ((ptcdesc->rts_stbc) ? 1 : 0)); SET_TX_DESC_RTS_RATE(pdesc, ptcdesc->rts_rate); SET_TX_DESC_RTS_BW(pdesc, 0); SET_TX_DESC_RTS_SC(pdesc, ptcdesc->rts_sc); SET_TX_DESC_RTS_SHORT(pdesc, ((ptcdesc->rts_rate <= DESC92_RATE54M) ? (ptcdesc->rts_use_shortpreamble ? 1 : 0) : (ptcdesc->rts_use_shortgi ? 1 : 0))); if (bw_40) { if (ptcdesc->packet_bw) { SET_TX_DESC_DATA_BW(pdesc, 1); SET_TX_DESC_TX_SUB_CARRIER(pdesc, 3); } else { SET_TX_DESC_DATA_BW(pdesc, 0); SET_TX_DESC_TX_SUB_CARRIER(pdesc, mac->cur_40_prime_sc); } } else { SET_TX_DESC_DATA_BW(pdesc, 0); SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0); } SET_TX_DESC_LINIP(pdesc, 0); SET_TX_DESC_PKT_SIZE(pdesc, (u16) skb->len); if (sta) { u8 ampdu_density = sta->ht_cap.ampdu_density; SET_TX_DESC_AMPDU_DENSITY(pdesc, ampdu_density); } 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(pdesc, 0x1); break; case WLAN_CIPHER_SUITE_CCMP: SET_TX_DESC_SEC_TYPE(pdesc, 0x3); break; default: SET_TX_DESC_SEC_TYPE(pdesc, 0x0); break; } } SET_TX_DESC_PKT_ID(pdesc, 0); SET_TX_DESC_QUEUE_SEL(pdesc, fw_qsel); SET_TX_DESC_DATA_RATE_FB_LIMIT(pdesc, 0x1F); SET_TX_DESC_RTS_RATE_FB_LIMIT(pdesc, 0xF); SET_TX_DESC_DISABLE_FB(pdesc, 0); SET_TX_DESC_USE_RATE(pdesc, ptcdesc->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(pdesc, 1); SET_TX_DESC_HTC(pdesc, 1); } } } SET_TX_DESC_FIRST_SEG(pdesc, (firstseg ? 1 : 0)); SET_TX_DESC_LAST_SEG(pdesc, (lastseg ? 1 : 0)); SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16) skb->len); SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping); if (rtlpriv->dm.useramask) { SET_TX_DESC_RATE_ID(pdesc, ptcdesc->ratr_index); SET_TX_DESC_MACID(pdesc, ptcdesc->mac_id); } else { SET_TX_DESC_RATE_ID(pdesc, 0xC + ptcdesc->ratr_index); SET_TX_DESC_MACID(pdesc, ptcdesc->ratr_index); } if ((!ieee80211_is_data_qos(fc)) && ppsc->fwctrl_lps) { SET_TX_DESC_HWSEQ_EN_8723(pdesc, 1); if (!defaultadapter) SET_TX_DESC_HWSEQ_SEL_8723(pdesc, 1); } SET_TX_DESC_MORE_FRAG(pdesc, (lastseg ? 0 : 1)); if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) || is_broadcast_ether_addr(ieee80211_get_DA(hdr))) { SET_TX_DESC_BMC(pdesc, 1); } RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n"); } void rtl8723ae_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc, bool firstseg, bool lastseg, struct sk_buff *skb) { struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw)); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data); u8 fw_queue = QSLT_BEACON; dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); __le16 fc = hdr->frame_control; if (pci_dma_mapping_error(rtlpci->pdev, mapping)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "DMA mapping error"); return; } CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE); if (firstseg) SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN); 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_TX_BUFFER_SIZE(pdesc, (u16) (skb->len)); SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping); 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_8723(pdesc, 1); /* 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\n", pdesc, TX_DESC_SIZE); } void rtl8723ae_set_desc(struct ieee80211_hw *hw, u8 *pdesc, bool istx, u8 desc_name, u8 *val) { if (istx == true) { switch (desc_name) { case HW_DESC_OWN: SET_TX_DESC_OWN(pdesc, 1); break; case HW_DESC_TX_NEXTDESC_ADDR: SET_TX_DESC_NEXT_DESC_ADDRESS(pdesc, *(u32 *) val); break; default: RT_ASSERT(false, "ERR txdesc :%d not process\n", desc_name); break; } } else { switch (desc_name) { case HW_DESC_RXOWN: SET_RX_DESC_OWN(pdesc, 1); break; case HW_DESC_RXBUFF_ADDR: SET_RX_DESC_BUFF_ADDR(pdesc, *(u32 *) val); break; case HW_DESC_RXPKT_LEN: SET_RX_DESC_PKT_LEN(pdesc, *(u32 *) val); break; case HW_DESC_RXERO: SET_RX_DESC_EOR(pdesc, 1); break; default: RT_ASSERT(false, "ERR rxdesc :%d not process\n", desc_name); break; } } } u32 rtl8723ae_get_desc(u8 *pdesc, bool istx, u8 desc_name) { u32 ret = 0; if (istx == true) { switch (desc_name) { case HW_DESC_OWN: ret = GET_TX_DESC_OWN(pdesc); break; case HW_DESC_TXBUFF_ADDR: ret = GET_TX_DESC_TX_BUFFER_ADDRESS(pdesc); break; default: RT_ASSERT(false, "ERR txdesc :%d not process\n", desc_name); break; } } else { switch (desc_name) { case HW_DESC_OWN: ret = GET_RX_DESC_OWN(pdesc); break; case HW_DESC_RXPKT_LEN: ret = GET_RX_DESC_PKT_LEN(pdesc); break; default: RT_ASSERT(false, "ERR rxdesc :%d not process\n", desc_name); break; } } return ret; } void rtl8723ae_tx_polling(struct ieee80211_hw *hw, u8 hw_queue) { struct rtl_priv *rtlpriv = rtl_priv(hw); if (hw_queue == BEACON_QUEUE) { rtl_write_word(rtlpriv, REG_PCIE_CTRL_REG, BIT(4)); } else { rtl_write_word(rtlpriv, REG_PCIE_CTRL_REG, BIT(0) << (hw_queue)); } }