linux/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/trx.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright(c) 2009-2012  Realtek Corporation.*/
   3
   4#include "../wifi.h"
   5#include "../pci.h"
   6#include "../base.h"
   7#include "../stats.h"
   8#include "reg.h"
   9#include "def.h"
  10#include "phy.h"
  11#include "trx.h"
  12#include "led.h"
  13
  14static u8 _rtl92ce_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue)
  15{
  16        __le16 fc = rtl_get_fc(skb);
  17
  18        if (unlikely(ieee80211_is_beacon(fc)))
  19                return QSLT_BEACON;
  20        if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
  21                return QSLT_MGNT;
  22
  23        return skb->priority;
  24}
  25
  26static void _rtl92ce_query_rxphystatus(struct ieee80211_hw *hw,
  27                                       struct rtl_stats *pstats,
  28                                       struct rx_desc_92c *pdesc,
  29                                       struct rx_fwinfo_92c *p_drvinfo,
  30                                       bool packet_match_bssid,
  31                                       bool packet_toself,
  32                                       bool packet_beacon)
  33{
  34        struct rtl_priv *rtlpriv = rtl_priv(hw);
  35        struct phy_sts_cck_8192s_t *cck_buf;
  36        struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv);
  37        s8 rx_pwr_all = 0, rx_pwr[4];
  38        u8 evm, pwdb_all, rf_rx_num = 0;
  39        u8 i, max_spatial_stream;
  40        u32 rssi, total_rssi = 0;
  41        bool is_cck_rate;
  42
  43        is_cck_rate = RX_HAL_IS_CCK_RATE(pdesc->rxmcs);
  44        pstats->packet_matchbssid = packet_match_bssid;
  45        pstats->packet_toself = packet_toself;
  46        pstats->is_cck = is_cck_rate;
  47        pstats->packet_beacon = packet_beacon;
  48        pstats->rx_mimo_sig_qual[0] = -1;
  49        pstats->rx_mimo_sig_qual[1] = -1;
  50
  51        if (is_cck_rate) {
  52                u8 report, cck_highpwr;
  53
  54                cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
  55
  56                if (ppsc->rfpwr_state == ERFON)
  57                        cck_highpwr = (u8) rtl_get_bbreg(hw,
  58                                                 RFPGA0_XA_HSSIPARAMETER2,
  59                                                 BIT(9));
  60                else
  61                        cck_highpwr = false;
  62
  63                if (!cck_highpwr) {
  64                        u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
  65
  66                        report = cck_buf->cck_agc_rpt & 0xc0;
  67                        report = report >> 6;
  68                        switch (report) {
  69                        case 0x3:
  70                                rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
  71                                break;
  72                        case 0x2:
  73                                rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
  74                                break;
  75                        case 0x1:
  76                                rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
  77                                break;
  78                        case 0x0:
  79                                rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
  80                                break;
  81                        }
  82                } else {
  83                        u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
  84
  85                        report = p_drvinfo->cfosho[0] & 0x60;
  86                        report = report >> 5;
  87                        switch (report) {
  88                        case 0x3:
  89                                rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
  90                                break;
  91                        case 0x2:
  92                                rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
  93                                break;
  94                        case 0x1:
  95                                rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
  96                                break;
  97                        case 0x0:
  98                                rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
  99                                break;
 100                        }
 101                }
 102
 103                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 104                /* CCK gain is smaller than OFDM/MCS gain,
 105                 * so we add gain diff by experiences,
 106                 * the val is 6
 107                 */
 108                pwdb_all += 6;
 109                if (pwdb_all > 100)
 110                        pwdb_all = 100;
 111                /* modify the offset to make the same
 112                 * gain index with OFDM.
 113                 */
 114                if (pwdb_all > 34 && pwdb_all <= 42)
 115                        pwdb_all -= 2;
 116                else if (pwdb_all > 26 && pwdb_all <= 34)
 117                        pwdb_all -= 6;
 118                else if (pwdb_all > 14 && pwdb_all <= 26)
 119                        pwdb_all -= 8;
 120                else if (pwdb_all > 4 && pwdb_all <= 14)
 121                        pwdb_all -= 4;
 122
 123                pstats->rx_pwdb_all = pwdb_all;
 124                pstats->recvsignalpower = rx_pwr_all;
 125
 126                /* (3) Get Signal Quality (EVM) */
 127                if (packet_match_bssid) {
 128                        u8 sq;
 129
 130                        if (pstats->rx_pwdb_all > 40)
 131                                sq = 100;
 132                        else {
 133                                sq = cck_buf->sq_rpt;
 134                                if (sq > 64)
 135                                        sq = 0;
 136                                else if (sq < 20)
 137                                        sq = 100;
 138                                else
 139                                        sq = ((64 - sq) * 100) / 44;
 140                        }
 141
 142                        pstats->signalquality = sq;
 143                        pstats->rx_mimo_sig_qual[0] = sq;
 144                        pstats->rx_mimo_sig_qual[1] = -1;
 145                }
 146        } else {
 147                rtlpriv->dm.rfpath_rxenable[0] =
 148                    rtlpriv->dm.rfpath_rxenable[1] = true;
 149                /* (1)Get RSSI for HT rate */
 150                for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
 151                        /* we will judge RF RX path now. */
 152                        if (rtlpriv->dm.rfpath_rxenable[i])
 153                                rf_rx_num++;
 154
 155                        rx_pwr[i] =
 156                            ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) - 110;
 157                        /* Translate DBM to percentage. */
 158                        rssi = rtl_query_rxpwrpercentage(rx_pwr[i]);
 159                        total_rssi += rssi;
 160                        /* Get Rx snr value in DB */
 161                        rtlpriv->stats.rx_snr_db[i] =
 162                            (long)(p_drvinfo->rxsnr[i] / 2);
 163
 164                        /* Record Signal Strength for next packet */
 165                        if (packet_match_bssid)
 166                                pstats->rx_mimo_signalstrength[i] = (u8) rssi;
 167                }
 168
 169                /* (2)PWDB, Average PWDB cacluated by
 170                 * hardware (for rate adaptive)
 171                 */
 172                rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
 173                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 174                pstats->rx_pwdb_all = pwdb_all;
 175                pstats->rxpower = rx_pwr_all;
 176                pstats->recvsignalpower = rx_pwr_all;
 177
 178                /* (3)EVM of HT rate */
 179                if (pstats->is_ht && pstats->rate >= DESC_RATEMCS8 &&
 180                    pstats->rate <= DESC_RATEMCS15)
 181                        max_spatial_stream = 2;
 182                else
 183                        max_spatial_stream = 1;
 184
 185                for (i = 0; i < max_spatial_stream; i++) {
 186                        evm = rtl_evm_db_to_percentage(p_drvinfo->rxevm[i]);
 187
 188                        if (packet_match_bssid) {
 189                                /* Fill value in RFD, Get the first
 190                                 * spatial stream only
 191                                 */
 192                                if (i == 0)
 193                                        pstats->signalquality =
 194                                            (u8)(evm & 0xff);
 195                                pstats->rx_mimo_sig_qual[i] = (u8)(evm & 0xff);
 196                        }
 197                }
 198        }
 199
 200        /* UI BSS List signal strength(in percentage),
 201         * make it good looking, from 0~100.
 202         */
 203        if (is_cck_rate)
 204                pstats->signalstrength =
 205                    (u8)(rtl_signal_scale_mapping(hw, pwdb_all));
 206        else if (rf_rx_num != 0)
 207                pstats->signalstrength =
 208                    (u8)(rtl_signal_scale_mapping(hw, total_rssi /= rf_rx_num));
 209}
 210
 211static void _rtl92ce_translate_rx_signal_stuff(struct ieee80211_hw *hw,
 212                                               struct sk_buff *skb,
 213                                               struct rtl_stats *pstats,
 214                                               struct rx_desc_92c *pdesc,
 215                                               struct rx_fwinfo_92c *p_drvinfo)
 216{
 217        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 218        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 219
 220        struct ieee80211_hdr *hdr;
 221        u8 *tmp_buf;
 222        u8 *praddr;
 223        __le16 fc;
 224        u16 type, c_fc;
 225        bool packet_matchbssid, packet_toself, packet_beacon = false;
 226
 227        tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
 228
 229        hdr = (struct ieee80211_hdr *)tmp_buf;
 230        fc = hdr->frame_control;
 231        c_fc = le16_to_cpu(fc);
 232        type = WLAN_FC_GET_TYPE(fc);
 233        praddr = hdr->addr1;
 234
 235        packet_matchbssid =
 236            ((IEEE80211_FTYPE_CTL != type) &&
 237             ether_addr_equal(mac->bssid,
 238                              (c_fc & IEEE80211_FCTL_TODS) ? hdr->addr1 :
 239                              (c_fc & IEEE80211_FCTL_FROMDS) ? hdr->addr2 :
 240                              hdr->addr3) &&
 241             (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv));
 242
 243        packet_toself = packet_matchbssid &&
 244             ether_addr_equal(praddr, rtlefuse->dev_addr);
 245
 246        if (ieee80211_is_beacon(fc))
 247                packet_beacon = true;
 248
 249        _rtl92ce_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
 250                                   packet_matchbssid, packet_toself,
 251                                   packet_beacon);
 252
 253        rtl_process_phyinfo(hw, tmp_buf, pstats);
 254}
 255
 256bool rtl92ce_rx_query_desc(struct ieee80211_hw *hw,
 257                           struct rtl_stats *stats,
 258                           struct ieee80211_rx_status *rx_status,
 259                           u8 *p_desc8, struct sk_buff *skb)
 260{
 261        struct rx_fwinfo_92c *p_drvinfo;
 262        struct rx_desc_92c *pdesc = (struct rx_desc_92c *)p_desc8;
 263        struct ieee80211_hdr *hdr;
 264        __le32 *p_desc = (__le32 *)p_desc8;
 265        u32 phystatus = get_rx_desc_physt(p_desc);
 266
 267        stats->length = (u16)get_rx_desc_pkt_len(p_desc);
 268        stats->rx_drvinfo_size = (u8)get_rx_desc_drv_info_size(p_desc) *
 269            RX_DRV_INFO_SIZE_UNIT;
 270        stats->rx_bufshift = (u8)(get_rx_desc_shift(p_desc) & 0x03);
 271        stats->icv = (u16)get_rx_desc_icv(p_desc);
 272        stats->crc = (u16)get_rx_desc_crc32(p_desc);
 273        stats->hwerror = (stats->crc | stats->icv);
 274        stats->decrypted = !get_rx_desc_swdec(p_desc);
 275        stats->rate = (u8)get_rx_desc_rxmcs(p_desc);
 276        stats->shortpreamble = (u16)get_rx_desc_splcp(p_desc);
 277        stats->isampdu = (bool)(get_rx_desc_paggr(p_desc) == 1);
 278        stats->isfirst_ampdu = (bool)((get_rx_desc_paggr(p_desc) == 1) &&
 279                                      (get_rx_desc_faggr(p_desc) == 1));
 280        stats->timestamp_low = get_rx_desc_tsfl(p_desc);
 281        stats->rx_is40mhzpacket = (bool)get_rx_desc_bw(p_desc);
 282        stats->is_ht = (bool)get_rx_desc_rxht(p_desc);
 283
 284        stats->is_cck = RX_HAL_IS_CCK_RATE(pdesc->rxmcs);
 285
 286        rx_status->freq = hw->conf.chandef.chan->center_freq;
 287        rx_status->band = hw->conf.chandef.chan->band;
 288
 289        hdr = (struct ieee80211_hdr *)(skb->data + stats->rx_drvinfo_size
 290                        + stats->rx_bufshift);
 291
 292        if (stats->crc)
 293                rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 294
 295        if (stats->rx_is40mhzpacket)
 296                rx_status->bw = RATE_INFO_BW_40;
 297
 298        if (stats->is_ht)
 299                rx_status->encoding = RX_ENC_HT;
 300
 301        rx_status->flag |= RX_FLAG_MACTIME_START;
 302
 303        /* hw will set stats->decrypted true, if it finds the
 304         * frame is open data frame or mgmt frame.
 305         * So hw will not decryption robust managment frame
 306         * for IEEE80211w but still set status->decrypted
 307         * true, so here we should set it back to undecrypted
 308         * for IEEE80211w frame, and mac80211 sw will help
 309         * to decrypt it
 310         */
 311        if (stats->decrypted) {
 312                if ((_ieee80211_is_robust_mgmt_frame(hdr)) &&
 313                    (ieee80211_has_protected(hdr->frame_control)))
 314                        rx_status->flag &= ~RX_FLAG_DECRYPTED;
 315                else
 316                        rx_status->flag |= RX_FLAG_DECRYPTED;
 317        }
 318        /* rate_idx: index of data rate into band's
 319         * supported rates or MCS index if HT rates
 320         * are use (RX_FLAG_HT)
 321         * Notice: this is diff with windows define
 322         */
 323        rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht,
 324                                                   false, stats->rate);
 325
 326        rx_status->mactime = stats->timestamp_low;
 327        if (phystatus) {
 328                p_drvinfo = (struct rx_fwinfo_92c *)(skb->data +
 329                                                     stats->rx_bufshift);
 330
 331                _rtl92ce_translate_rx_signal_stuff(hw,
 332                                                   skb, stats, pdesc,
 333                                                   p_drvinfo);
 334        }
 335
 336        /*rx_status->qual = stats->signal; */
 337        rx_status->signal = stats->recvsignalpower + 10;
 338
 339        return true;
 340}
 341
 342void rtl92ce_tx_fill_desc(struct ieee80211_hw *hw,
 343                          struct ieee80211_hdr *hdr, u8 *pdesc8,
 344                          u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
 345                          struct ieee80211_sta *sta,
 346                          struct sk_buff *skb,
 347                          u8 hw_queue, struct rtl_tcb_desc *tcb_desc)
 348{
 349        struct rtl_priv *rtlpriv = rtl_priv(hw);
 350        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 351        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 352        struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 353        bool defaultadapter = true;
 354        __le32 *pdesc = (__le32 *)pdesc8;
 355        u16 seq_number;
 356        __le16 fc = hdr->frame_control;
 357        u8 fw_qsel = _rtl92ce_map_hwqueue_to_fwqueue(skb, hw_queue);
 358        bool firstseg = ((hdr->seq_ctrl &
 359                          cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0);
 360
 361        bool lastseg = ((hdr->frame_control &
 362                         cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) == 0);
 363
 364        dma_addr_t mapping = dma_map_single(&rtlpci->pdev->dev, skb->data,
 365                                            skb->len, DMA_TO_DEVICE);
 366
 367        u8 bw_40 = 0;
 368
 369        if (dma_mapping_error(&rtlpci->pdev->dev, mapping)) {
 370                rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE,
 371                        "DMA mapping error\n");
 372                return;
 373        }
 374        rcu_read_lock();
 375        sta = get_sta(hw, mac->vif, mac->bssid);
 376        if (mac->opmode == NL80211_IFTYPE_STATION) {
 377                bw_40 = mac->bw_40;
 378        } else if (mac->opmode == NL80211_IFTYPE_AP ||
 379                   mac->opmode == NL80211_IFTYPE_ADHOC ||
 380                   mac->opmode == NL80211_IFTYPE_MESH_POINT) {
 381                if (sta)
 382                        bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
 383        }
 384
 385        seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 386
 387        rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
 388
 389        clear_pci_tx_desc_content(pdesc, sizeof(struct tx_desc_92c));
 390
 391        if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
 392                firstseg = true;
 393                lastseg = true;
 394        }
 395        if (firstseg) {
 396                set_tx_desc_offset(pdesc, USB_HWDESC_HEADER_LEN);
 397
 398                set_tx_desc_tx_rate(pdesc, tcb_desc->hw_rate);
 399
 400                if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
 401                        set_tx_desc_data_shortgi(pdesc, 1);
 402
 403                if (info->flags & IEEE80211_TX_CTL_AMPDU) {
 404                        set_tx_desc_agg_break(pdesc, 1);
 405                        set_tx_desc_max_agg_num(pdesc, 0x14);
 406                }
 407                set_tx_desc_seq(pdesc, seq_number);
 408
 409                set_tx_desc_rts_enable(pdesc, ((tcb_desc->rts_enable &&
 410                                                !tcb_desc->
 411                                                cts_enable) ? 1 : 0));
 412                set_tx_desc_hw_rts_enable(pdesc,
 413                                          ((tcb_desc->rts_enable
 414                                            || tcb_desc->cts_enable) ? 1 : 0));
 415                set_tx_desc_cts2self(pdesc, ((tcb_desc->cts_enable) ? 1 : 0));
 416                set_tx_desc_rts_stbc(pdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
 417
 418                set_tx_desc_rts_rate(pdesc, tcb_desc->rts_rate);
 419                set_tx_desc_rts_bw(pdesc, 0);
 420                set_tx_desc_rts_sc(pdesc, tcb_desc->rts_sc);
 421                set_tx_desc_rts_short(pdesc,
 422                                      ((tcb_desc->rts_rate <= DESC_RATE54M) ?
 423                                       (tcb_desc->rts_use_shortpreamble ? 1 : 0)
 424                                       : (tcb_desc->rts_use_shortgi ? 1 : 0)));
 425
 426                if (bw_40) {
 427                        if (tcb_desc->packet_bw) {
 428                                set_tx_desc_data_bw(pdesc, 1);
 429                                set_tx_desc_tx_sub_carrier(pdesc, 3);
 430                        } else {
 431                                set_tx_desc_data_bw(pdesc, 0);
 432                                set_tx_desc_tx_sub_carrier(pdesc,
 433                                                 mac->cur_40_prime_sc);
 434                        }
 435                } else {
 436                        set_tx_desc_data_bw(pdesc, 0);
 437                        set_tx_desc_tx_sub_carrier(pdesc, 0);
 438                }
 439
 440                set_tx_desc_linip(pdesc, 0);
 441                set_tx_desc_pkt_size(pdesc, (u16)skb->len);
 442
 443                if (sta) {
 444                        u8 ampdu_density = sta->ht_cap.ampdu_density;
 445
 446                        set_tx_desc_ampdu_density(pdesc, ampdu_density);
 447                }
 448
 449                if (info->control.hw_key) {
 450                        struct ieee80211_key_conf *keyconf =
 451                            info->control.hw_key;
 452
 453                        switch (keyconf->cipher) {
 454                        case WLAN_CIPHER_SUITE_WEP40:
 455                        case WLAN_CIPHER_SUITE_WEP104:
 456                        case WLAN_CIPHER_SUITE_TKIP:
 457                                set_tx_desc_sec_type(pdesc, 0x1);
 458                                break;
 459                        case WLAN_CIPHER_SUITE_CCMP:
 460                                set_tx_desc_sec_type(pdesc, 0x3);
 461                                break;
 462                        default:
 463                                set_tx_desc_sec_type(pdesc, 0x0);
 464                                break;
 465
 466                        }
 467                }
 468
 469                set_tx_desc_pkt_id(pdesc, 0);
 470                set_tx_desc_queue_sel(pdesc, fw_qsel);
 471
 472                set_tx_desc_data_rate_fb_limit(pdesc, 0x1F);
 473                set_tx_desc_rts_rate_fb_limit(pdesc, 0xF);
 474                set_tx_desc_disable_fb(pdesc, 0);
 475                set_tx_desc_use_rate(pdesc, tcb_desc->use_driver_rate ? 1 : 0);
 476
 477                if (ieee80211_is_data_qos(fc)) {
 478                        if (mac->rdg_en) {
 479                                rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE,
 480                                        "Enable RDG function\n");
 481                                set_tx_desc_rdg_enable(pdesc, 1);
 482                                set_tx_desc_htc(pdesc, 1);
 483                        }
 484                }
 485        }
 486        rcu_read_unlock();
 487
 488        set_tx_desc_first_seg(pdesc, (firstseg ? 1 : 0));
 489        set_tx_desc_last_seg(pdesc, (lastseg ? 1 : 0));
 490
 491        set_tx_desc_tx_buffer_size(pdesc, (u16)skb->len);
 492
 493        set_tx_desc_tx_buffer_address(pdesc, mapping);
 494
 495        if (rtlpriv->dm.useramask) {
 496                set_tx_desc_rate_id(pdesc, tcb_desc->ratr_index);
 497                set_tx_desc_macid(pdesc, tcb_desc->mac_id);
 498        } else {
 499                set_tx_desc_rate_id(pdesc, 0xC + tcb_desc->ratr_index);
 500                set_tx_desc_macid(pdesc, tcb_desc->ratr_index);
 501        }
 502
 503        if ((!ieee80211_is_data_qos(fc)) && ppsc->fwctrl_lps) {
 504                set_tx_desc_hwseq_en(pdesc, 1);
 505                set_tx_desc_pkt_id(pdesc, 8);
 506
 507                if (!defaultadapter)
 508                        set_tx_desc_qos(pdesc, 1);
 509        }
 510
 511        set_tx_desc_more_frag(pdesc, (lastseg ? 0 : 1));
 512
 513        if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
 514            is_broadcast_ether_addr(ieee80211_get_DA(hdr))) {
 515                set_tx_desc_bmc(pdesc, 1);
 516        }
 517
 518        rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE, "\n");
 519}
 520
 521void rtl92ce_tx_fill_cmddesc(struct ieee80211_hw *hw,
 522                             u8 *pdesc8, bool firstseg,
 523                             bool lastseg, struct sk_buff *skb)
 524{
 525        struct rtl_priv *rtlpriv = rtl_priv(hw);
 526        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 527        u8 fw_queue = QSLT_BEACON;
 528        __le32 *pdesc = (__le32 *)pdesc8;
 529
 530        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
 531        __le16 fc = hdr->frame_control;
 532
 533        dma_addr_t mapping = dma_map_single(&rtlpci->pdev->dev, skb->data,
 534                                            skb->len, DMA_TO_DEVICE);
 535
 536        if (dma_mapping_error(&rtlpci->pdev->dev, mapping)) {
 537                rtl_dbg(rtlpriv, COMP_SEND, DBG_TRACE,
 538                        "DMA mapping error\n");
 539                return;
 540        }
 541        clear_pci_tx_desc_content(pdesc, TX_DESC_SIZE);
 542
 543        if (firstseg)
 544                set_tx_desc_offset(pdesc, USB_HWDESC_HEADER_LEN);
 545
 546        set_tx_desc_tx_rate(pdesc, DESC_RATE1M);
 547
 548        set_tx_desc_seq(pdesc, 0);
 549
 550        set_tx_desc_linip(pdesc, 0);
 551
 552        set_tx_desc_queue_sel(pdesc, fw_queue);
 553
 554        set_tx_desc_first_seg(pdesc, 1);
 555        set_tx_desc_last_seg(pdesc, 1);
 556
 557        set_tx_desc_tx_buffer_size(pdesc, (u16)(skb->len));
 558
 559        set_tx_desc_tx_buffer_address(pdesc, mapping);
 560
 561        set_tx_desc_rate_id(pdesc, 7);
 562        set_tx_desc_macid(pdesc, 0);
 563
 564        set_tx_desc_own(pdesc, 1);
 565
 566        set_tx_desc_pkt_size(pdesc, (u16)(skb->len));
 567
 568        set_tx_desc_first_seg(pdesc, 1);
 569        set_tx_desc_last_seg(pdesc, 1);
 570
 571        set_tx_desc_offset(pdesc, 0x20);
 572
 573        set_tx_desc_use_rate(pdesc, 1);
 574
 575        if (!ieee80211_is_data_qos(fc)) {
 576                set_tx_desc_hwseq_en(pdesc, 1);
 577                set_tx_desc_pkt_id(pdesc, 8);
 578        }
 579
 580        RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD,
 581                      "H2C Tx Cmd Content", pdesc, TX_DESC_SIZE);
 582}
 583
 584void rtl92ce_set_desc(struct ieee80211_hw *hw, u8 *pdesc8, bool istx,
 585                      u8 desc_name, u8 *val)
 586{
 587        __le32 *pdesc = (__le32 *)pdesc8;
 588
 589        if (istx) {
 590                switch (desc_name) {
 591                case HW_DESC_OWN:
 592                        wmb();
 593                        set_tx_desc_own(pdesc, 1);
 594                        break;
 595                case HW_DESC_TX_NEXTDESC_ADDR:
 596                        set_tx_desc_next_desc_address(pdesc, *(u32 *)val);
 597                        break;
 598                default:
 599                        WARN_ONCE(true, "rtl8192ce: ERR txdesc :%d not processed\n",
 600                                  desc_name);
 601                        break;
 602                }
 603        } else {
 604                switch (desc_name) {
 605                case HW_DESC_RXOWN:
 606                        wmb();
 607                        set_rx_desc_own(pdesc, 1);
 608                        break;
 609                case HW_DESC_RXBUFF_ADDR:
 610                        set_rx_desc_buff_addr(pdesc, *(u32 *)val);
 611                        break;
 612                case HW_DESC_RXPKT_LEN:
 613                        set_rx_desc_pkt_len(pdesc, *(u32 *)val);
 614                        break;
 615                case HW_DESC_RXERO:
 616                        set_rx_desc_eor(pdesc, 1);
 617                        break;
 618                default:
 619                        WARN_ONCE(true, "rtl8192ce: ERR rxdesc :%d not processed\n",
 620                                  desc_name);
 621                        break;
 622                }
 623        }
 624}
 625
 626u64 rtl92ce_get_desc(struct ieee80211_hw *hw, u8 *p_desc8,
 627                     bool istx, u8 desc_name)
 628{
 629        u32 ret = 0;
 630        __le32 *p_desc = (__le32 *)p_desc8;
 631
 632        if (istx) {
 633                switch (desc_name) {
 634                case HW_DESC_OWN:
 635                        ret = get_tx_desc_own(p_desc);
 636                        break;
 637                case HW_DESC_TXBUFF_ADDR:
 638                        ret = get_tx_desc_tx_buffer_address(p_desc);
 639                        break;
 640                default:
 641                        WARN_ONCE(true, "rtl8192ce: ERR txdesc :%d not processed\n",
 642                                  desc_name);
 643                        break;
 644                }
 645        } else {
 646                switch (desc_name) {
 647                case HW_DESC_OWN:
 648                        ret = get_rx_desc_own(p_desc);
 649                        break;
 650                case HW_DESC_RXPKT_LEN:
 651                        ret = get_rx_desc_pkt_len(p_desc);
 652                        break;
 653                case HW_DESC_RXBUFF_ADDR:
 654                        ret = get_rx_desc_buff_addr(p_desc);
 655                        break;
 656                default:
 657                        WARN_ONCE(true, "rtl8192ce: ERR rxdesc :%d not processed\n",
 658                                  desc_name);
 659                        break;
 660                }
 661        }
 662        return ret;
 663}
 664
 665bool rtl92ce_is_tx_desc_closed(struct ieee80211_hw *hw,
 666                               u8 hw_queue, u16 index)
 667{
 668        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 669        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
 670        u8 *entry = (u8 *)(&ring->desc[ring->idx]);
 671        u8 own = (u8)rtl92ce_get_desc(hw, entry, true, HW_DESC_OWN);
 672
 673        /*beacon packet will only use the first
 674         *descriptor defautly,and the own may not
 675         *be cleared by the hardware
 676         */
 677        if (own)
 678                return false;
 679        return true;
 680}
 681
 682void rtl92ce_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
 683{
 684        struct rtl_priv *rtlpriv = rtl_priv(hw);
 685
 686        if (hw_queue == BEACON_QUEUE) {
 687                rtl_write_word(rtlpriv, REG_PCIE_CTRL_REG, BIT(4));
 688        } else {
 689                rtl_write_word(rtlpriv, REG_PCIE_CTRL_REG,
 690                               BIT(0) << (hw_queue));
 691        }
 692}
 693
 694