linux/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c
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   1/******************************************************************************
   2 *
   3 * Copyright(c) 2009-2014  Realtek Corporation.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of version 2 of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 *
  14 * The full GNU General Public License is included in this distribution in the
  15 * file called LICENSE.
  16 *
  17 * Contact Information:
  18 * wlanfae <wlanfae@realtek.com>
  19 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  20 * Hsinchu 300, Taiwan.
  21 *
  22 * Larry Finger <Larry.Finger@lwfinger.net>
  23 *
  24 *****************************************************************************/
  25
  26#include "../wifi.h"
  27#include "../pci.h"
  28#include "../base.h"
  29#include "../stats.h"
  30#include "reg.h"
  31#include "def.h"
  32#include "phy.h"
  33#include "trx.h"
  34#include "led.h"
  35#include "dm.h"
  36#include "fw.h"
  37
  38static u8 _rtl92ee_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue)
  39{
  40        __le16 fc = rtl_get_fc(skb);
  41
  42        if (unlikely(ieee80211_is_beacon(fc)))
  43                return QSLT_BEACON;
  44        if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
  45                return QSLT_MGNT;
  46
  47        return skb->priority;
  48}
  49
  50static void _rtl92ee_query_rxphystatus(struct ieee80211_hw *hw,
  51                                       struct rtl_stats *pstatus, u8 *pdesc,
  52                                       struct rx_fwinfo *p_drvinfo,
  53                                       bool bpacket_match_bssid,
  54                                       bool bpacket_toself,
  55                                       bool packet_beacon)
  56{
  57        struct rtl_priv *rtlpriv = rtl_priv(hw);
  58        struct phy_status_rpt *p_phystrpt = (struct phy_status_rpt *)p_drvinfo;
  59        s8 rx_pwr_all = 0, rx_pwr[4];
  60        u8 rf_rx_num = 0, evm, pwdb_all;
  61        u8 i, max_spatial_stream;
  62        u32 rssi, total_rssi = 0;
  63        bool is_cck = pstatus->is_cck;
  64        u8 lan_idx, vga_idx;
  65
  66        /* Record it for next packet processing */
  67        pstatus->packet_matchbssid = bpacket_match_bssid;
  68        pstatus->packet_toself = bpacket_toself;
  69        pstatus->packet_beacon = packet_beacon;
  70        pstatus->rx_mimo_signalquality[0] = -1;
  71        pstatus->rx_mimo_signalquality[1] = -1;
  72
  73        if (is_cck) {
  74                u8 cck_highpwr;
  75                u8 cck_agc_rpt;
  76                /* CCK Driver info Structure is not the same as OFDM packet. */
  77                cck_agc_rpt = p_phystrpt->cck_agc_rpt_ofdm_cfosho_a;
  78
  79                /* (1)Hardware does not provide RSSI for CCK
  80                 * (2)PWDB, Average PWDB cacluated by
  81                 * hardware (for rate adaptive)
  82                 */
  83                cck_highpwr = (u8)rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2,
  84                                                 BIT(9));
  85
  86                lan_idx = ((cck_agc_rpt & 0xE0) >> 5);
  87                vga_idx = (cck_agc_rpt & 0x1f);
  88                switch (lan_idx) {
  89                case 7: /*VGA_idx = 27~2*/
  90                                if (vga_idx <= 27)
  91                                        rx_pwr_all = -100 + 2 * (27 - vga_idx);
  92                                else
  93                                        rx_pwr_all = -100;
  94                                break;
  95                case 6: /*VGA_idx = 2~0*/
  96                                rx_pwr_all = -48 + 2 * (2 - vga_idx);
  97                                break;
  98                case 5: /*VGA_idx = 7~5*/
  99                                rx_pwr_all = -42 + 2 * (7 - vga_idx);
 100                                break;
 101                case 4: /*VGA_idx = 7~4*/
 102                                rx_pwr_all = -36 + 2 * (7 - vga_idx);
 103                                break;
 104                case 3: /*VGA_idx = 7~0*/
 105                                rx_pwr_all = -24 + 2 * (7 - vga_idx);
 106                                break;
 107                case 2: /*VGA_idx = 5~0*/
 108                                if (cck_highpwr)
 109                                        rx_pwr_all = -12 + 2 * (5 - vga_idx);
 110                                else
 111                                        rx_pwr_all = -6 + 2 * (5 - vga_idx);
 112                                break;
 113                case 1:
 114                                rx_pwr_all = 8 - 2 * vga_idx;
 115                                break;
 116                case 0:
 117                                rx_pwr_all = 14 - 2 * vga_idx;
 118                                break;
 119                default:
 120                                break;
 121                }
 122                rx_pwr_all += 16;
 123                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 124
 125                if (!cck_highpwr) {
 126                        if (pwdb_all >= 80)
 127                                pwdb_all = ((pwdb_all - 80) << 1) +
 128                                           ((pwdb_all - 80) >> 1) + 80;
 129                        else if ((pwdb_all <= 78) && (pwdb_all >= 20))
 130                                pwdb_all += 3;
 131                        if (pwdb_all > 100)
 132                                pwdb_all = 100;
 133                }
 134
 135                pstatus->rx_pwdb_all = pwdb_all;
 136                pstatus->bt_rx_rssi_percentage = pwdb_all;
 137                pstatus->recvsignalpower = rx_pwr_all;
 138
 139                /* (3) Get Signal Quality (EVM) */
 140                if (bpacket_match_bssid) {
 141                        u8 sq, sq_rpt;
 142
 143                        if (pstatus->rx_pwdb_all > 40) {
 144                                sq = 100;
 145                        } else {
 146                                sq_rpt = p_phystrpt->cck_sig_qual_ofdm_pwdb_all;
 147                                if (sq_rpt > 64)
 148                                        sq = 0;
 149                                else if (sq_rpt < 20)
 150                                        sq = 100;
 151                                else
 152                                        sq = ((64 - sq_rpt) * 100) / 44;
 153                        }
 154
 155                        pstatus->signalquality = sq;
 156                        pstatus->rx_mimo_signalquality[0] = sq;
 157                        pstatus->rx_mimo_signalquality[1] = -1;
 158                }
 159        } else {
 160                /* (1)Get RSSI for HT rate */
 161                for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) {
 162                        /* we will judge RF RX path now. */
 163                        if (rtlpriv->dm.rfpath_rxenable[i])
 164                                rf_rx_num++;
 165
 166                        rx_pwr[i] = ((p_phystrpt->path_agc[i].gain & 0x3f) * 2)
 167                                    - 110;
 168
 169                        pstatus->rx_pwr[i] = rx_pwr[i];
 170                        /* Translate DBM to percentage. */
 171                        rssi = rtl_query_rxpwrpercentage(rx_pwr[i]);
 172                        total_rssi += rssi;
 173
 174                        pstatus->rx_mimo_signalstrength[i] = (u8)rssi;
 175                }
 176
 177                /* (2)PWDB, Average PWDB cacluated by
 178                 * hardware (for rate adaptive)
 179                 */
 180                rx_pwr_all = ((p_phystrpt->cck_sig_qual_ofdm_pwdb_all >> 1)
 181                              & 0x7f) - 110;
 182
 183                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 184                pstatus->rx_pwdb_all = pwdb_all;
 185                pstatus->bt_rx_rssi_percentage = pwdb_all;
 186                pstatus->rxpower = rx_pwr_all;
 187                pstatus->recvsignalpower = rx_pwr_all;
 188
 189                /* (3)EVM of HT rate */
 190                if (pstatus->rate >= DESC_RATEMCS8 &&
 191                    pstatus->rate <= DESC_RATEMCS15)
 192                        max_spatial_stream = 2;
 193                else
 194                        max_spatial_stream = 1;
 195
 196                for (i = 0; i < max_spatial_stream; i++) {
 197                        evm = rtl_evm_db_to_percentage(
 198                                                p_phystrpt->stream_rxevm[i]);
 199
 200                        if (bpacket_match_bssid) {
 201                                /* Fill value in RFD, Get the first
 202                                 * spatial stream only
 203                                 */
 204                                if (i == 0)
 205                                        pstatus->signalquality = (u8)(evm &
 206                                                                       0xff);
 207                                pstatus->rx_mimo_signalquality[i] = (u8)(evm &
 208                                                                          0xff);
 209                        }
 210                }
 211
 212                if (bpacket_match_bssid) {
 213                        for (i = RF90_PATH_A; i <= RF90_PATH_B; i++)
 214                                rtl_priv(hw)->dm.cfo_tail[i] =
 215                                        (int)p_phystrpt->path_cfotail[i];
 216
 217                        if (rtl_priv(hw)->dm.packet_count == 0xffffffff)
 218                                rtl_priv(hw)->dm.packet_count = 0;
 219                        else
 220                                rtl_priv(hw)->dm.packet_count++;
 221                }
 222        }
 223
 224        /* UI BSS List signal strength(in percentage),
 225         * make it good looking, from 0~100.
 226         */
 227        if (is_cck)
 228                pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
 229                                                                     pwdb_all));
 230        else if (rf_rx_num != 0)
 231                pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
 232                                                      total_rssi /= rf_rx_num));
 233}
 234
 235static void _rtl92ee_translate_rx_signal_stuff(struct ieee80211_hw *hw,
 236                                               struct sk_buff *skb,
 237                                               struct rtl_stats *pstatus,
 238                                               u8 *pdesc,
 239                                               struct rx_fwinfo *p_drvinfo)
 240{
 241        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 242        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 243        struct ieee80211_hdr *hdr;
 244        u8 *tmp_buf;
 245        u8 *praddr;
 246        u8 *psaddr;
 247        __le16 fc;
 248        bool packet_matchbssid, packet_toself, packet_beacon;
 249
 250        tmp_buf = skb->data + pstatus->rx_drvinfo_size +
 251                  pstatus->rx_bufshift + 24;
 252
 253        hdr = (struct ieee80211_hdr *)tmp_buf;
 254        fc = hdr->frame_control;
 255        praddr = hdr->addr1;
 256        psaddr = ieee80211_get_SA(hdr);
 257        ether_addr_copy(pstatus->psaddr, psaddr);
 258
 259        packet_matchbssid = (!ieee80211_is_ctl(fc) &&
 260                               (ether_addr_equal(mac->bssid,
 261                                                ieee80211_has_tods(fc) ?
 262                                                hdr->addr1 :
 263                                                ieee80211_has_fromds(fc) ?
 264                                                hdr->addr2 : hdr->addr3)) &&
 265                                (!pstatus->hwerror) && (!pstatus->crc) &&
 266                                (!pstatus->icv));
 267
 268        packet_toself = packet_matchbssid &&
 269                         (ether_addr_equal(praddr, rtlefuse->dev_addr));
 270
 271        if (ieee80211_is_beacon(fc))
 272                packet_beacon = true;
 273        else
 274                packet_beacon = false;
 275
 276        if (packet_beacon && packet_matchbssid)
 277                rtl_priv(hw)->dm.dbginfo.num_qry_beacon_pkt++;
 278
 279        if (packet_matchbssid && ieee80211_is_data_qos(hdr->frame_control) &&
 280            !is_multicast_ether_addr(ieee80211_get_DA(hdr))) {
 281                struct ieee80211_qos_hdr *hdr_qos =
 282                                            (struct ieee80211_qos_hdr *)tmp_buf;
 283                u16 tid = le16_to_cpu(hdr_qos->qos_ctrl) & 0xf;
 284
 285                if (tid != 0 && tid != 3)
 286                        rtl_priv(hw)->dm.dbginfo.num_non_be_pkt++;
 287        }
 288
 289        _rtl92ee_query_rxphystatus(hw, pstatus, pdesc, p_drvinfo,
 290                                   packet_matchbssid, packet_toself,
 291                                   packet_beacon);
 292        rtl_process_phyinfo(hw, tmp_buf, pstatus);
 293}
 294
 295static void _rtl92ee_insert_emcontent(struct rtl_tcb_desc *ptcb_desc,
 296                                      u8 *virtualaddress)
 297{
 298        u32 dwtmp = 0;
 299
 300        memset(virtualaddress, 0, 8);
 301
 302        SET_EARLYMODE_PKTNUM(virtualaddress, ptcb_desc->empkt_num);
 303        if (ptcb_desc->empkt_num == 1) {
 304                dwtmp = ptcb_desc->empkt_len[0];
 305        } else {
 306                dwtmp = ptcb_desc->empkt_len[0];
 307                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 308                dwtmp += ptcb_desc->empkt_len[1];
 309        }
 310        SET_EARLYMODE_LEN0(virtualaddress, dwtmp);
 311
 312        if (ptcb_desc->empkt_num <= 3) {
 313                dwtmp = ptcb_desc->empkt_len[2];
 314        } else {
 315                dwtmp = ptcb_desc->empkt_len[2];
 316                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 317                dwtmp += ptcb_desc->empkt_len[3];
 318        }
 319        SET_EARLYMODE_LEN1(virtualaddress, dwtmp);
 320        if (ptcb_desc->empkt_num <= 5) {
 321                dwtmp = ptcb_desc->empkt_len[4];
 322        } else {
 323                dwtmp = ptcb_desc->empkt_len[4];
 324                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 325                dwtmp += ptcb_desc->empkt_len[5];
 326        }
 327        SET_EARLYMODE_LEN2_1(virtualaddress, dwtmp & 0xF);
 328        SET_EARLYMODE_LEN2_2(virtualaddress, dwtmp >> 4);
 329        if (ptcb_desc->empkt_num <= 7) {
 330                dwtmp = ptcb_desc->empkt_len[6];
 331        } else {
 332                dwtmp = ptcb_desc->empkt_len[6];
 333                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 334                dwtmp += ptcb_desc->empkt_len[7];
 335        }
 336        SET_EARLYMODE_LEN3(virtualaddress, dwtmp);
 337        if (ptcb_desc->empkt_num <= 9) {
 338                dwtmp = ptcb_desc->empkt_len[8];
 339        } else {
 340                dwtmp = ptcb_desc->empkt_len[8];
 341                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 342                dwtmp += ptcb_desc->empkt_len[9];
 343        }
 344        SET_EARLYMODE_LEN4(virtualaddress, dwtmp);
 345}
 346
 347bool rtl92ee_rx_query_desc(struct ieee80211_hw *hw,
 348                           struct rtl_stats *status,
 349                           struct ieee80211_rx_status *rx_status,
 350                           u8 *pdesc, struct sk_buff *skb)
 351{
 352        struct rtl_priv *rtlpriv = rtl_priv(hw);
 353        struct rx_fwinfo *p_drvinfo;
 354        struct ieee80211_hdr *hdr;
 355        u32 phystatus = GET_RX_DESC_PHYST(pdesc);
 356
 357        if (GET_RX_STATUS_DESC_RPT_SEL(pdesc) == 0)
 358                status->packet_report_type = NORMAL_RX;
 359        else
 360                status->packet_report_type = C2H_PACKET;
 361        status->length = (u16)GET_RX_DESC_PKT_LEN(pdesc);
 362        status->rx_drvinfo_size = (u8)GET_RX_DESC_DRV_INFO_SIZE(pdesc) *
 363                                  RX_DRV_INFO_SIZE_UNIT;
 364        status->rx_bufshift = (u8)(GET_RX_DESC_SHIFT(pdesc) & 0x03);
 365        status->icv = (u16)GET_RX_DESC_ICV(pdesc);
 366        status->crc = (u16)GET_RX_DESC_CRC32(pdesc);
 367        status->hwerror = (status->crc | status->icv);
 368        status->decrypted = !GET_RX_DESC_SWDEC(pdesc);
 369        status->rate = (u8)GET_RX_DESC_RXMCS(pdesc);
 370        status->isampdu = (bool)(GET_RX_DESC_PAGGR(pdesc) == 1);
 371        status->timestamp_low = GET_RX_DESC_TSFL(pdesc);
 372        status->is_cck = RTL92EE_RX_HAL_IS_CCK_RATE(status->rate);
 373
 374        status->macid = GET_RX_DESC_MACID(pdesc);
 375        if (GET_RX_STATUS_DESC_MAGIC_MATCH(pdesc))
 376                status->wake_match = BIT(2);
 377        else if (GET_RX_STATUS_DESC_MAGIC_MATCH(pdesc))
 378                status->wake_match = BIT(1);
 379        else if (GET_RX_STATUS_DESC_UNICAST_MATCH(pdesc))
 380                status->wake_match = BIT(0);
 381        else
 382                status->wake_match = 0;
 383        if (status->wake_match)
 384                RT_TRACE(rtlpriv, COMP_RXDESC, DBG_LOUD,
 385                         "GGGGGGGGGGGGGet Wakeup Packet!! WakeMatch=%d\n",
 386                         status->wake_match);
 387        rx_status->freq = hw->conf.chandef.chan->center_freq;
 388        rx_status->band = hw->conf.chandef.chan->band;
 389
 390        hdr = (struct ieee80211_hdr *)(skb->data + status->rx_drvinfo_size +
 391                                       status->rx_bufshift + 24);
 392
 393        if (status->crc)
 394                rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 395
 396        if (status->rx_is40Mhzpacket)
 397                rx_status->bw = RATE_INFO_BW_40;
 398
 399        if (status->is_ht)
 400                rx_status->encoding = RX_ENC_HT;
 401
 402        rx_status->flag |= RX_FLAG_MACTIME_START;
 403
 404        /* hw will set status->decrypted true, if it finds the
 405         * frame is open data frame or mgmt frame.
 406         * So hw will not decryption robust managment frame
 407         * for IEEE80211w but still set status->decrypted
 408         * true, so here we should set it back to undecrypted
 409         * for IEEE80211w frame, and mac80211 sw will help
 410         * to decrypt it
 411         */
 412        if (status->decrypted) {
 413                if ((!_ieee80211_is_robust_mgmt_frame(hdr)) &&
 414                    (ieee80211_has_protected(hdr->frame_control)))
 415                        rx_status->flag |= RX_FLAG_DECRYPTED;
 416                else
 417                        rx_status->flag &= ~RX_FLAG_DECRYPTED;
 418        }
 419
 420        /* rate_idx: index of data rate into band's
 421         * supported rates or MCS index if HT rates
 422         * are use (RX_FLAG_HT)
 423         * Notice: this is diff with windows define
 424         */
 425        rx_status->rate_idx = rtlwifi_rate_mapping(hw, status->is_ht,
 426                                                   false, status->rate);
 427
 428        rx_status->mactime = status->timestamp_low;
 429        if (phystatus) {
 430                p_drvinfo = (struct rx_fwinfo *)(skb->data +
 431                                                 status->rx_bufshift + 24);
 432
 433                _rtl92ee_translate_rx_signal_stuff(hw, skb, status, pdesc,
 434                                                   p_drvinfo);
 435        }
 436        rx_status->signal = status->recvsignalpower + 10;
 437        if (status->packet_report_type == TX_REPORT2) {
 438                status->macid_valid_entry[0] =
 439                        GET_RX_RPT2_DESC_MACID_VALID_1(pdesc);
 440                status->macid_valid_entry[1] =
 441                        GET_RX_RPT2_DESC_MACID_VALID_2(pdesc);
 442        }
 443        return true;
 444}
 445
 446/*in Windows, this == Rx_92EE_Interrupt*/
 447void rtl92ee_rx_check_dma_ok(struct ieee80211_hw *hw, u8 *header_desc,
 448                             u8 queue_index)
 449{
 450        u8 first_seg = 0;
 451        u8 last_seg = 0;
 452        u16 total_len = 0;
 453        u16 read_cnt = 0;
 454
 455        if (header_desc == NULL)
 456                return;
 457
 458        total_len = (u16)GET_RX_BUFFER_DESC_TOTAL_LENGTH(header_desc);
 459
 460        first_seg = (u8)GET_RX_BUFFER_DESC_FS(header_desc);
 461
 462        last_seg = (u8)GET_RX_BUFFER_DESC_LS(header_desc);
 463
 464        while (total_len == 0 && first_seg == 0 && last_seg == 0) {
 465                read_cnt++;
 466                total_len = (u16)GET_RX_BUFFER_DESC_TOTAL_LENGTH(header_desc);
 467                first_seg = (u8)GET_RX_BUFFER_DESC_FS(header_desc);
 468                last_seg = (u8)GET_RX_BUFFER_DESC_LS(header_desc);
 469
 470                if (read_cnt > 20)
 471                        break;
 472        }
 473}
 474
 475u16 rtl92ee_rx_desc_buff_remained_cnt(struct ieee80211_hw *hw, u8 queue_index)
 476{
 477        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 478        struct rtl_priv *rtlpriv = rtl_priv(hw);
 479        u16 read_point = 0, write_point = 0, remind_cnt = 0;
 480        u32 tmp_4byte = 0;
 481        static bool start_rx;
 482
 483        tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
 484        read_point = (u16)((tmp_4byte>>16) & 0x7ff);
 485        write_point = (u16)(tmp_4byte & 0x7ff);
 486
 487        if (write_point != rtlpci->rx_ring[queue_index].next_rx_rp) {
 488                RT_TRACE(rtlpriv, COMP_RXDESC, DBG_DMESG,
 489                         "!!!write point is 0x%x, reg 0x3B4 value is 0x%x\n",
 490                          write_point, tmp_4byte);
 491                tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
 492                read_point = (u16)((tmp_4byte>>16) & 0x7ff);
 493                write_point = (u16)(tmp_4byte & 0x7ff);
 494        }
 495
 496        if (read_point > 0)
 497                start_rx = true;
 498        if (!start_rx)
 499                return 0;
 500
 501        remind_cnt = calc_fifo_space(read_point, write_point,
 502                                     RTL_PCI_MAX_RX_COUNT);
 503
 504        if (remind_cnt == 0)
 505                return 0;
 506
 507        rtlpci->rx_ring[queue_index].next_rx_rp = write_point;
 508
 509        return remind_cnt;
 510}
 511
 512static u16 get_desc_addr_fr_q_idx(u16 queue_index)
 513{
 514        u16 desc_address = REG_BEQ_TXBD_IDX;
 515
 516        switch (queue_index) {
 517        case BK_QUEUE:
 518                desc_address = REG_BKQ_TXBD_IDX;
 519                break;
 520        case BE_QUEUE:
 521                desc_address = REG_BEQ_TXBD_IDX;
 522                break;
 523        case VI_QUEUE:
 524                desc_address = REG_VIQ_TXBD_IDX;
 525                break;
 526        case VO_QUEUE:
 527                desc_address = REG_VOQ_TXBD_IDX;
 528                break;
 529        case BEACON_QUEUE:
 530                desc_address = REG_BEQ_TXBD_IDX;
 531                break;
 532        case TXCMD_QUEUE:
 533                desc_address = REG_BEQ_TXBD_IDX;
 534                break;
 535        case MGNT_QUEUE:
 536                desc_address = REG_MGQ_TXBD_IDX;
 537                break;
 538        case HIGH_QUEUE:
 539                desc_address = REG_HI0Q_TXBD_IDX;
 540                break;
 541        case HCCA_QUEUE:
 542                desc_address = REG_BEQ_TXBD_IDX;
 543                break;
 544        default:
 545                break;
 546        }
 547        return desc_address;
 548}
 549
 550u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
 551{
 552        struct rtl_priv *rtlpriv = rtl_priv(hw);
 553        u16 point_diff = 0;
 554        u16 current_tx_read_point = 0, current_tx_write_point = 0;
 555        u32 tmp_4byte;
 556
 557        tmp_4byte = rtl_read_dword(rtlpriv,
 558                                   get_desc_addr_fr_q_idx(q_idx));
 559        current_tx_read_point = (u16)((tmp_4byte >> 16) & 0x0fff);
 560        current_tx_write_point = (u16)((tmp_4byte) & 0x0fff);
 561
 562        point_diff = calc_fifo_space(current_tx_read_point,
 563                                     current_tx_write_point,
 564                                     TX_DESC_NUM_92E);
 565
 566        return point_diff;
 567}
 568
 569void rtl92ee_pre_fill_tx_bd_desc(struct ieee80211_hw *hw,
 570                                 u8 *tx_bd_desc, u8 *desc, u8 queue_index,
 571                                 struct sk_buff *skb, dma_addr_t addr)
 572{
 573        struct rtl_priv *rtlpriv = rtl_priv(hw);
 574        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 575        u32 pkt_len = skb->len;
 576        u16 desc_size = 40; /*tx desc size*/
 577        u32 psblen = 0;
 578        u16 tx_page_size = 0;
 579        u32 total_packet_size = 0;
 580        u16 current_bd_desc;
 581        u8 i = 0;
 582        u16 real_desc_size = 0x28;
 583        u16     append_early_mode_size = 0;
 584        u8 segmentnum = 1 << (RTL8192EE_SEG_NUM + 1);
 585        dma_addr_t desc_dma_addr;
 586        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 587
 588        tx_page_size = 2;
 589        current_bd_desc = rtlpci->tx_ring[queue_index].cur_tx_wp;
 590
 591        total_packet_size = desc_size+pkt_len;
 592
 593        if (rtlpriv->rtlhal.earlymode_enable)   {
 594                if (queue_index < BEACON_QUEUE) {
 595                        append_early_mode_size = 8;
 596                        total_packet_size += append_early_mode_size;
 597                }
 598        }
 599
 600        if (tx_page_size > 0) {
 601                psblen = (pkt_len + real_desc_size + append_early_mode_size) /
 602                         (tx_page_size * 128);
 603
 604                if (psblen * (tx_page_size * 128) < total_packet_size)
 605                        psblen += 1;
 606        }
 607
 608        /* tx desc addr */
 609        desc_dma_addr = rtlpci->tx_ring[queue_index].dma +
 610                        (current_bd_desc * TX_DESC_SIZE);
 611
 612        /* Reset */
 613        SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, 0);
 614        SET_TX_BUFF_DESC_PSB(tx_bd_desc, 0);
 615        SET_TX_BUFF_DESC_OWN(tx_bd_desc, 0);
 616
 617        for (i = 1; i < segmentnum; i++) {
 618                SET_TXBUFFER_DESC_LEN_WITH_OFFSET(tx_bd_desc, i, 0);
 619                SET_TXBUFFER_DESC_AMSDU_WITH_OFFSET(tx_bd_desc, i, 0);
 620                SET_TXBUFFER_DESC_ADD_LOW_WITH_OFFSET(tx_bd_desc, i, 0);
 621                SET_TXBUFFER_DESC_ADD_HIGH_WITH_OFFSET(tx_bd_desc, i, 0, dma64);
 622        }
 623
 624        /* Clear all status */
 625        CLEAR_PCI_TX_DESC_CONTENT(desc, TX_DESC_SIZE);
 626
 627        if (rtlpriv->rtlhal.earlymode_enable) {
 628                if (queue_index < BEACON_QUEUE) {
 629                        /* This if needs braces */
 630                        SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size + 8);
 631                } else {
 632                        SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size);
 633                }
 634        } else {
 635                SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size);
 636        }
 637        SET_TX_BUFF_DESC_PSB(tx_bd_desc, psblen);
 638        SET_TX_BUFF_DESC_ADDR_LOW_0(tx_bd_desc, desc_dma_addr);
 639        SET_TX_BUFF_DESC_ADDR_HIGH_0(tx_bd_desc, ((u64)desc_dma_addr >> 32),
 640                                     dma64);
 641
 642        SET_TXBUFFER_DESC_LEN_WITH_OFFSET(tx_bd_desc, 1, pkt_len);
 643        /* don't using extendsion mode. */
 644        SET_TXBUFFER_DESC_AMSDU_WITH_OFFSET(tx_bd_desc, 1, 0);
 645        SET_TXBUFFER_DESC_ADD_LOW_WITH_OFFSET(tx_bd_desc, 1, addr);
 646        SET_TXBUFFER_DESC_ADD_HIGH_WITH_OFFSET(tx_bd_desc, 1,
 647                                               ((u64)addr >> 32), dma64);
 648
 649        SET_TX_DESC_PKT_SIZE(desc, (u16)(pkt_len));
 650        SET_TX_DESC_TX_BUFFER_SIZE(desc, (u16)(pkt_len));
 651}
 652
 653void rtl92ee_tx_fill_desc(struct ieee80211_hw *hw,
 654                          struct ieee80211_hdr *hdr, u8 *pdesc_tx,
 655                          u8 *pbd_desc_tx,
 656                          struct ieee80211_tx_info *info,
 657                          struct ieee80211_sta *sta,
 658                          struct sk_buff *skb,
 659                          u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
 660{
 661        struct rtl_priv *rtlpriv = rtl_priv(hw);
 662        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 663        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 664        struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 665        struct rtlwifi_tx_info *tx_info = rtl_tx_skb_cb_info(skb);
 666        u8 *pdesc = (u8 *)pdesc_tx;
 667        u16 seq_number;
 668        __le16 fc = hdr->frame_control;
 669        unsigned int buf_len = 0;
 670        u8 fw_qsel = _rtl92ee_map_hwqueue_to_fwqueue(skb, hw_queue);
 671        bool firstseg = ((hdr->seq_ctrl &
 672                            cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0);
 673        bool lastseg = ((hdr->frame_control &
 674                           cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) == 0);
 675        dma_addr_t mapping;
 676        u8 bw_40 = 0;
 677        u8 short_gi = 0;
 678
 679        if (mac->opmode == NL80211_IFTYPE_STATION) {
 680                bw_40 = mac->bw_40;
 681        } else if (mac->opmode == NL80211_IFTYPE_AP ||
 682                   mac->opmode == NL80211_IFTYPE_ADHOC) {
 683                if (sta)
 684                        bw_40 = sta->ht_cap.cap &
 685                                IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 686        }
 687        seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 688        rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc);
 689        /* reserve 8 byte for AMPDU early mode */
 690        if (rtlhal->earlymode_enable) {
 691                skb_push(skb, EM_HDR_LEN);
 692                memset(skb->data, 0, EM_HDR_LEN);
 693        }
 694        buf_len = skb->len;
 695        mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
 696                                 PCI_DMA_TODEVICE);
 697        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 698                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 699                         "DMA mapping error\n");
 700                return;
 701        }
 702
 703        if (pbd_desc_tx != NULL)
 704                rtl92ee_pre_fill_tx_bd_desc(hw, pbd_desc_tx, pdesc, hw_queue,
 705                                            skb, mapping);
 706
 707        if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
 708                firstseg = true;
 709                lastseg = true;
 710        }
 711        if (firstseg) {
 712                if (rtlhal->earlymode_enable) {
 713                        SET_TX_DESC_PKT_OFFSET(pdesc, 1);
 714                        SET_TX_DESC_OFFSET(pdesc,
 715                                           USB_HWDESC_HEADER_LEN + EM_HDR_LEN);
 716                        if (ptcb_desc->empkt_num) {
 717                                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 718                                         "Insert 8 byte.pTcb->EMPktNum:%d\n",
 719                                          ptcb_desc->empkt_num);
 720                                _rtl92ee_insert_emcontent(ptcb_desc,
 721                                                          (u8 *)(skb->data));
 722                        }
 723                } else {
 724                        SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN);
 725                }
 726
 727
 728                SET_TX_DESC_TX_RATE(pdesc, ptcb_desc->hw_rate);
 729
 730                if (ieee80211_is_mgmt(fc)) {
 731                        ptcb_desc->use_driver_rate = true;
 732                } else {
 733                        if (rtlpriv->ra.is_special_data) {
 734                                ptcb_desc->use_driver_rate = true;
 735                                SET_TX_DESC_TX_RATE(pdesc, DESC_RATE11M);
 736                        } else {
 737                                ptcb_desc->use_driver_rate = false;
 738                        }
 739                }
 740
 741                if (ptcb_desc->hw_rate > DESC_RATEMCS0)
 742                        short_gi = (ptcb_desc->use_shortgi) ? 1 : 0;
 743                else
 744                        short_gi = (ptcb_desc->use_shortpreamble) ? 1 : 0;
 745
 746                if (info->flags & IEEE80211_TX_CTL_AMPDU) {
 747                        SET_TX_DESC_AGG_ENABLE(pdesc, 1);
 748                        SET_TX_DESC_MAX_AGG_NUM(pdesc, 0x14);
 749                }
 750                SET_TX_DESC_SEQ(pdesc, seq_number);
 751                SET_TX_DESC_RTS_ENABLE(pdesc,
 752                                       ((ptcb_desc->rts_enable &&
 753                                         !ptcb_desc->cts_enable) ? 1 : 0));
 754                SET_TX_DESC_HW_RTS_ENABLE(pdesc, 0);
 755                SET_TX_DESC_CTS2SELF(pdesc,
 756                                     ((ptcb_desc->cts_enable) ? 1 : 0));
 757
 758                SET_TX_DESC_RTS_RATE(pdesc, ptcb_desc->rts_rate);
 759                SET_TX_DESC_RTS_SC(pdesc, ptcb_desc->rts_sc);
 760                SET_TX_DESC_RTS_SHORT(pdesc,
 761                                ((ptcb_desc->rts_rate <= DESC_RATE54M) ?
 762                                 (ptcb_desc->rts_use_shortpreamble ? 1 : 0) :
 763                                 (ptcb_desc->rts_use_shortgi ? 1 : 0)));
 764
 765                if (ptcb_desc->tx_enable_sw_calc_duration)
 766                        SET_TX_DESC_NAV_USE_HDR(pdesc, 1);
 767
 768                if (bw_40) {
 769                        if (ptcb_desc->packet_bw == HT_CHANNEL_WIDTH_20_40) {
 770                                SET_TX_DESC_DATA_BW(pdesc, 1);
 771                                SET_TX_DESC_TX_SUB_CARRIER(pdesc, 3);
 772                        } else {
 773                                SET_TX_DESC_DATA_BW(pdesc, 0);
 774                                SET_TX_DESC_TX_SUB_CARRIER(pdesc,
 775                                                           mac->cur_40_prime_sc);
 776                        }
 777                } else {
 778                        SET_TX_DESC_DATA_BW(pdesc, 0);
 779                        SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0);
 780                }
 781
 782                SET_TX_DESC_LINIP(pdesc, 0);
 783                if (sta) {
 784                        u8 ampdu_density = sta->ht_cap.ampdu_density;
 785
 786                        SET_TX_DESC_AMPDU_DENSITY(pdesc, ampdu_density);
 787                }
 788                if (info->control.hw_key) {
 789                        struct ieee80211_key_conf *key = info->control.hw_key;
 790
 791                        switch (key->cipher) {
 792                        case WLAN_CIPHER_SUITE_WEP40:
 793                        case WLAN_CIPHER_SUITE_WEP104:
 794                        case WLAN_CIPHER_SUITE_TKIP:
 795                                SET_TX_DESC_SEC_TYPE(pdesc, 0x1);
 796                                break;
 797                        case WLAN_CIPHER_SUITE_CCMP:
 798                                SET_TX_DESC_SEC_TYPE(pdesc, 0x3);
 799                                break;
 800                        default:
 801                                SET_TX_DESC_SEC_TYPE(pdesc, 0x0);
 802                                break;
 803                        }
 804                }
 805
 806                SET_TX_DESC_QUEUE_SEL(pdesc, fw_qsel);
 807                SET_TX_DESC_DATA_RATE_FB_LIMIT(pdesc, 0x1F);
 808                SET_TX_DESC_RTS_RATE_FB_LIMIT(pdesc, 0xF);
 809                SET_TX_DESC_DISABLE_FB(pdesc,
 810                                       ptcb_desc->disable_ratefallback ? 1 : 0);
 811                SET_TX_DESC_USE_RATE(pdesc, ptcb_desc->use_driver_rate ? 1 : 0);
 812
 813                /*SET_TX_DESC_PWR_STATUS(pdesc, pwr_status);*/
 814                /* Set TxRate and RTSRate in TxDesc  */
 815                /* This prevent Tx initial rate of new-coming packets */
 816                /* from being overwritten by retried  packet rate.*/
 817                if (!ptcb_desc->use_driver_rate) {
 818                        /*SET_TX_DESC_RTS_RATE(pdesc, 0x08); */
 819                        /* SET_TX_DESC_TX_RATE(pdesc, 0x0b); */
 820                }
 821                if (ieee80211_is_data_qos(fc)) {
 822                        if (mac->rdg_en) {
 823                                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 824                                         "Enable RDG function.\n");
 825                                SET_TX_DESC_RDG_ENABLE(pdesc, 1);
 826                                SET_TX_DESC_HTC(pdesc, 1);
 827                        }
 828                }
 829                /* tx report */
 830                rtl_set_tx_report(ptcb_desc, pdesc, hw, tx_info);
 831        }
 832
 833        SET_TX_DESC_FIRST_SEG(pdesc, (firstseg ? 1 : 0));
 834        SET_TX_DESC_LAST_SEG(pdesc, (lastseg ? 1 : 0));
 835        SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
 836        if (rtlpriv->dm.useramask) {
 837                SET_TX_DESC_RATE_ID(pdesc, ptcb_desc->ratr_index);
 838                SET_TX_DESC_MACID(pdesc, ptcb_desc->mac_id);
 839        } else {
 840                SET_TX_DESC_RATE_ID(pdesc, 0xC + ptcb_desc->ratr_index);
 841                SET_TX_DESC_MACID(pdesc, ptcb_desc->ratr_index);
 842        }
 843
 844        SET_TX_DESC_MORE_FRAG(pdesc, (lastseg ? 0 : 1));
 845        if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
 846            is_broadcast_ether_addr(ieee80211_get_DA(hdr))) {
 847                SET_TX_DESC_BMC(pdesc, 1);
 848        }
 849        RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n");
 850}
 851
 852void rtl92ee_tx_fill_cmddesc(struct ieee80211_hw *hw,
 853                             u8 *pdesc, bool firstseg,
 854                             bool lastseg, struct sk_buff *skb)
 855{
 856        struct rtl_priv *rtlpriv = rtl_priv(hw);
 857        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 858        u8 fw_queue = QSLT_BEACON;
 859        dma_addr_t mapping = pci_map_single(rtlpci->pdev,
 860                                            skb->data, skb->len,
 861                                            PCI_DMA_TODEVICE);
 862        u8 txdesc_len = 40;
 863
 864        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 865                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 866                         "DMA mapping error\n");
 867                return;
 868        }
 869        CLEAR_PCI_TX_DESC_CONTENT(pdesc, txdesc_len);
 870
 871        if (firstseg)
 872                SET_TX_DESC_OFFSET(pdesc, txdesc_len);
 873
 874        SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
 875
 876        SET_TX_DESC_SEQ(pdesc, 0);
 877
 878        SET_TX_DESC_LINIP(pdesc, 0);
 879
 880        SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
 881
 882        SET_TX_DESC_FIRST_SEG(pdesc, 1);
 883        SET_TX_DESC_LAST_SEG(pdesc, 1);
 884
 885        SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len));
 886
 887        SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
 888
 889        SET_TX_DESC_RATE_ID(pdesc, 7);
 890        SET_TX_DESC_MACID(pdesc, 0);
 891
 892        SET_TX_DESC_OWN(pdesc, 1);
 893
 894        SET_TX_DESC_PKT_SIZE((u8 *)pdesc, (u16)(skb->len));
 895
 896        SET_TX_DESC_FIRST_SEG(pdesc, 1);
 897        SET_TX_DESC_LAST_SEG(pdesc, 1);
 898
 899        SET_TX_DESC_OFFSET(pdesc, 40);
 900
 901        SET_TX_DESC_USE_RATE(pdesc, 1);
 902
 903        RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD,
 904                      "H2C Tx Cmd Content\n", pdesc, txdesc_len);
 905}
 906
 907void rtl92ee_set_desc(struct ieee80211_hw *hw, u8 *pdesc, bool istx,
 908                      u8 desc_name, u8 *val)
 909{
 910        struct rtl_priv *rtlpriv = rtl_priv(hw);
 911        u8 q_idx = *val;
 912        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 913
 914        if (istx) {
 915                switch (desc_name) {
 916                case HW_DESC_TX_NEXTDESC_ADDR:
 917                        SET_TX_DESC_NEXT_DESC_ADDRESS(pdesc, *(u32 *)val);
 918                        break;
 919                case HW_DESC_OWN:{
 920                        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 921                        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[q_idx];
 922                        u16 max_tx_desc = ring->entries;
 923
 924                        if (q_idx == BEACON_QUEUE) {
 925                                ring->cur_tx_wp = 0;
 926                                ring->cur_tx_rp = 0;
 927                                SET_TX_BUFF_DESC_OWN(pdesc, 1);
 928                                return;
 929                        }
 930
 931                        /* make sure tx desc is available by caller */
 932                        ring->cur_tx_wp = ((ring->cur_tx_wp + 1) % max_tx_desc);
 933
 934                        rtl_write_word(rtlpriv,
 935                                       get_desc_addr_fr_q_idx(q_idx),
 936                                       ring->cur_tx_wp);
 937                }
 938                break;
 939                }
 940        } else {
 941                switch (desc_name) {
 942                case HW_DESC_RX_PREPARE:
 943                        SET_RX_BUFFER_DESC_LS(pdesc, 0);
 944                        SET_RX_BUFFER_DESC_FS(pdesc, 0);
 945                        SET_RX_BUFFER_DESC_TOTAL_LENGTH(pdesc, 0);
 946
 947                        SET_RX_BUFFER_DESC_DATA_LENGTH(pdesc,
 948                                                       MAX_RECEIVE_BUFFER_SIZE +
 949                                                       RX_DESC_SIZE);
 950
 951                        SET_RX_BUFFER_PHYSICAL_LOW(pdesc, (*(dma_addr_t *)val) &
 952                                                   DMA_BIT_MASK(32));
 953                        SET_RX_BUFFER_PHYSICAL_HIGH(pdesc,
 954                                                    ((u64)(*(dma_addr_t *)val)
 955                                                    >> 32),
 956                                                    dma64);
 957                        break;
 958                case HW_DESC_RXERO:
 959                        SET_RX_DESC_EOR(pdesc, 1);
 960                        break;
 961                default:
 962                        WARN_ONCE(true,
 963                                  "rtl8192ee: ERR rxdesc :%d not processed\n",
 964                                  desc_name);
 965                        break;
 966                }
 967        }
 968}
 969
 970u64 rtl92ee_get_desc(struct ieee80211_hw *hw,
 971                     u8 *pdesc, bool istx, u8 desc_name)
 972{
 973        struct rtl_priv *rtlpriv = rtl_priv(hw);
 974        u64 ret = 0;
 975        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 976
 977        if (istx) {
 978                switch (desc_name) {
 979                case HW_DESC_OWN:
 980                        ret = GET_TX_DESC_OWN(pdesc);
 981                        break;
 982                case HW_DESC_TXBUFF_ADDR:
 983                        ret = GET_TXBUFFER_DESC_ADDR_LOW(pdesc, 1);
 984                        ret |= (u64)GET_TXBUFFER_DESC_ADDR_HIGH(pdesc, 1,
 985                                                                dma64) << 32;
 986                        break;
 987                default:
 988                        WARN_ONCE(true,
 989                                  "rtl8192ee: ERR txdesc :%d not processed\n",
 990                                  desc_name);
 991                        break;
 992                }
 993        } else {
 994                switch (desc_name) {
 995                case HW_DESC_OWN:
 996                        ret = GET_RX_DESC_OWN(pdesc);
 997                        break;
 998                case HW_DESC_RXPKT_LEN:
 999                        ret = GET_RX_DESC_PKT_LEN(pdesc);
1000                        break;
1001                case HW_DESC_RXBUFF_ADDR:
1002                        ret = GET_RX_DESC_BUFF_ADDR(pdesc);
1003                        break;
1004                default:
1005                        WARN_ONCE(true,
1006                                  "rtl8192ee: ERR rxdesc :%d not processed\n",
1007                                  desc_name);
1008                        break;
1009                }
1010        }
1011        return ret;
1012}
1013
1014bool rtl92ee_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue, u16 index)
1015{
1016        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1017        struct rtl_priv *rtlpriv = rtl_priv(hw);
1018        u16 read_point, write_point;
1019        bool ret = false;
1020        static u8 stop_report_cnt;
1021        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
1022
1023        {
1024                u16 cur_tx_rp, cur_tx_wp;
1025                u32 tmpu32 = 0;
1026
1027                tmpu32 =
1028                  rtl_read_dword(rtlpriv,
1029                                 get_desc_addr_fr_q_idx(hw_queue));
1030                cur_tx_rp = (u16)((tmpu32 >> 16) & 0x0fff);
1031                cur_tx_wp = (u16)(tmpu32 & 0x0fff);
1032
1033                /* don't need to update ring->cur_tx_wp */
1034                ring->cur_tx_rp = cur_tx_rp;
1035        }
1036
1037        read_point = ring->cur_tx_rp;
1038        write_point = ring->cur_tx_wp;
1039
1040        if (write_point > read_point) {
1041                if (index < write_point && index >= read_point)
1042                        ret = false;
1043                else
1044                        ret = true;
1045        } else if (write_point < read_point) {
1046                if (index > write_point && index < read_point)
1047                        ret = true;
1048                else
1049                        ret = false;
1050        } else {
1051                if (index != read_point)
1052                        ret = true;
1053        }
1054
1055        if (hw_queue == BEACON_QUEUE)
1056                ret = true;
1057
1058        if (rtlpriv->rtlhal.driver_is_goingto_unload ||
1059            rtlpriv->psc.rfoff_reason > RF_CHANGE_BY_PS)
1060                ret = true;
1061
1062        if (hw_queue < BEACON_QUEUE) {
1063                if (!ret)
1064                        stop_report_cnt++;
1065                else
1066                        stop_report_cnt = 0;
1067        }
1068
1069        return ret;
1070}
1071
1072void rtl92ee_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
1073{
1074}
1075