linux/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/trx.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/* Copyright(c) 2009-2014  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#include "dm.h"
  14#include "fw.h"
  15
  16static u8 _rtl92ee_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue)
  17{
  18        __le16 fc = rtl_get_fc(skb);
  19
  20        if (unlikely(ieee80211_is_beacon(fc)))
  21                return QSLT_BEACON;
  22        if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
  23                return QSLT_MGNT;
  24
  25        return skb->priority;
  26}
  27
  28static void _rtl92ee_query_rxphystatus(struct ieee80211_hw *hw,
  29                                       struct rtl_stats *pstatus, u8 *pdesc,
  30                                       struct rx_fwinfo *p_drvinfo,
  31                                       bool bpacket_match_bssid,
  32                                       bool bpacket_toself,
  33                                       bool packet_beacon)
  34{
  35        struct rtl_priv *rtlpriv = rtl_priv(hw);
  36        struct phy_status_rpt *p_phystrpt = (struct phy_status_rpt *)p_drvinfo;
  37        s8 rx_pwr_all, rx_pwr[4];
  38        u8 rf_rx_num = 0, evm, pwdb_all;
  39        u8 i, max_spatial_stream;
  40        u32 rssi, total_rssi = 0;
  41        bool is_cck = pstatus->is_cck;
  42        u8 lan_idx, vga_idx;
  43
  44        /* Record it for next packet processing */
  45        pstatus->packet_matchbssid = bpacket_match_bssid;
  46        pstatus->packet_toself = bpacket_toself;
  47        pstatus->packet_beacon = packet_beacon;
  48        pstatus->rx_mimo_signalquality[0] = -1;
  49        pstatus->rx_mimo_signalquality[1] = -1;
  50
  51        if (is_cck) {
  52                u8 cck_highpwr;
  53                u8 cck_agc_rpt;
  54                /* CCK Driver info Structure is not the same as OFDM packet. */
  55                cck_agc_rpt = p_phystrpt->cck_agc_rpt_ofdm_cfosho_a;
  56
  57                /* (1)Hardware does not provide RSSI for CCK
  58                 * (2)PWDB, Average PWDB cacluated by
  59                 * hardware (for rate adaptive)
  60                 */
  61                cck_highpwr = (u8)rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2,
  62                                                 BIT(9));
  63
  64                lan_idx = ((cck_agc_rpt & 0xE0) >> 5);
  65                vga_idx = (cck_agc_rpt & 0x1f);
  66                switch (lan_idx) {
  67                case 7: /*VGA_idx = 27~2*/
  68                                if (vga_idx <= 27)
  69                                        rx_pwr_all = -100 + 2 * (27 - vga_idx);
  70                                else
  71                                        rx_pwr_all = -100;
  72                                break;
  73                case 6: /*VGA_idx = 2~0*/
  74                                rx_pwr_all = -48 + 2 * (2 - vga_idx);
  75                                break;
  76                case 5: /*VGA_idx = 7~5*/
  77                                rx_pwr_all = -42 + 2 * (7 - vga_idx);
  78                                break;
  79                case 4: /*VGA_idx = 7~4*/
  80                                rx_pwr_all = -36 + 2 * (7 - vga_idx);
  81                                break;
  82                case 3: /*VGA_idx = 7~0*/
  83                                rx_pwr_all = -24 + 2 * (7 - vga_idx);
  84                                break;
  85                case 2: /*VGA_idx = 5~0*/
  86                                if (cck_highpwr)
  87                                        rx_pwr_all = -12 + 2 * (5 - vga_idx);
  88                                else
  89                                        rx_pwr_all = -6 + 2 * (5 - vga_idx);
  90                                break;
  91                case 1:
  92                                rx_pwr_all = 8 - 2 * vga_idx;
  93                                break;
  94                case 0:
  95                                rx_pwr_all = 14 - 2 * vga_idx;
  96                                break;
  97                default:
  98                                rx_pwr_all = 0;
  99                                break;
 100                }
 101                rx_pwr_all += 16;
 102                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 103
 104                if (!cck_highpwr) {
 105                        if (pwdb_all >= 80)
 106                                pwdb_all = ((pwdb_all - 80) << 1) +
 107                                           ((pwdb_all - 80) >> 1) + 80;
 108                        else if ((pwdb_all <= 78) && (pwdb_all >= 20))
 109                                pwdb_all += 3;
 110                        if (pwdb_all > 100)
 111                                pwdb_all = 100;
 112                }
 113
 114                pstatus->rx_pwdb_all = pwdb_all;
 115                pstatus->bt_rx_rssi_percentage = pwdb_all;
 116                pstatus->recvsignalpower = rx_pwr_all;
 117
 118                /* (3) Get Signal Quality (EVM) */
 119                if (bpacket_match_bssid) {
 120                        u8 sq, sq_rpt;
 121
 122                        if (pstatus->rx_pwdb_all > 40) {
 123                                sq = 100;
 124                        } else {
 125                                sq_rpt = p_phystrpt->cck_sig_qual_ofdm_pwdb_all;
 126                                if (sq_rpt > 64)
 127                                        sq = 0;
 128                                else if (sq_rpt < 20)
 129                                        sq = 100;
 130                                else
 131                                        sq = ((64 - sq_rpt) * 100) / 44;
 132                        }
 133
 134                        pstatus->signalquality = sq;
 135                        pstatus->rx_mimo_signalquality[0] = sq;
 136                        pstatus->rx_mimo_signalquality[1] = -1;
 137                }
 138        } else {
 139                /* (1)Get RSSI for HT rate */
 140                for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) {
 141                        /* we will judge RF RX path now. */
 142                        if (rtlpriv->dm.rfpath_rxenable[i])
 143                                rf_rx_num++;
 144
 145                        rx_pwr[i] = ((p_phystrpt->path_agc[i].gain & 0x3f) * 2)
 146                                    - 110;
 147
 148                        pstatus->rx_pwr[i] = rx_pwr[i];
 149                        /* Translate DBM to percentage. */
 150                        rssi = rtl_query_rxpwrpercentage(rx_pwr[i]);
 151                        total_rssi += rssi;
 152
 153                        pstatus->rx_mimo_signalstrength[i] = (u8)rssi;
 154                }
 155
 156                /* (2)PWDB, Average PWDB cacluated by
 157                 * hardware (for rate adaptive)
 158                 */
 159                rx_pwr_all = ((p_phystrpt->cck_sig_qual_ofdm_pwdb_all >> 1)
 160                              & 0x7f) - 110;
 161
 162                pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 163                pstatus->rx_pwdb_all = pwdb_all;
 164                pstatus->bt_rx_rssi_percentage = pwdb_all;
 165                pstatus->rxpower = rx_pwr_all;
 166                pstatus->recvsignalpower = rx_pwr_all;
 167
 168                /* (3)EVM of HT rate */
 169                if (pstatus->rate >= DESC_RATEMCS8 &&
 170                    pstatus->rate <= DESC_RATEMCS15)
 171                        max_spatial_stream = 2;
 172                else
 173                        max_spatial_stream = 1;
 174
 175                for (i = 0; i < max_spatial_stream; i++) {
 176                        evm = rtl_evm_db_to_percentage(
 177                                                p_phystrpt->stream_rxevm[i]);
 178
 179                        if (bpacket_match_bssid) {
 180                                /* Fill value in RFD, Get the first
 181                                 * spatial stream only
 182                                 */
 183                                if (i == 0)
 184                                        pstatus->signalquality = (u8)(evm &
 185                                                                       0xff);
 186                                pstatus->rx_mimo_signalquality[i] = (u8)(evm &
 187                                                                          0xff);
 188                        }
 189                }
 190
 191                if (bpacket_match_bssid) {
 192                        for (i = RF90_PATH_A; i <= RF90_PATH_B; i++)
 193                                rtl_priv(hw)->dm.cfo_tail[i] =
 194                                        (int)p_phystrpt->path_cfotail[i];
 195
 196                        if (rtl_priv(hw)->dm.packet_count == 0xffffffff)
 197                                rtl_priv(hw)->dm.packet_count = 0;
 198                        else
 199                                rtl_priv(hw)->dm.packet_count++;
 200                }
 201        }
 202
 203        /* UI BSS List signal strength(in percentage),
 204         * make it good looking, from 0~100.
 205         */
 206        if (is_cck)
 207                pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
 208                                                                     pwdb_all));
 209        else if (rf_rx_num != 0)
 210                pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
 211                                                      total_rssi /= rf_rx_num));
 212}
 213
 214static void _rtl92ee_translate_rx_signal_stuff(struct ieee80211_hw *hw,
 215                                               struct sk_buff *skb,
 216                                               struct rtl_stats *pstatus,
 217                                               u8 *pdesc,
 218                                               struct rx_fwinfo *p_drvinfo)
 219{
 220        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 221        struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 222        struct ieee80211_hdr *hdr;
 223        u8 *tmp_buf;
 224        u8 *praddr;
 225        u8 *psaddr;
 226        __le16 fc;
 227        bool packet_matchbssid, packet_toself, packet_beacon;
 228
 229        tmp_buf = skb->data + pstatus->rx_drvinfo_size +
 230                  pstatus->rx_bufshift + 24;
 231
 232        hdr = (struct ieee80211_hdr *)tmp_buf;
 233        fc = hdr->frame_control;
 234        praddr = hdr->addr1;
 235        psaddr = ieee80211_get_SA(hdr);
 236        ether_addr_copy(pstatus->psaddr, psaddr);
 237
 238        packet_matchbssid = (!ieee80211_is_ctl(fc) &&
 239                               (ether_addr_equal(mac->bssid,
 240                                                ieee80211_has_tods(fc) ?
 241                                                hdr->addr1 :
 242                                                ieee80211_has_fromds(fc) ?
 243                                                hdr->addr2 : hdr->addr3)) &&
 244                                (!pstatus->hwerror) && (!pstatus->crc) &&
 245                                (!pstatus->icv));
 246
 247        packet_toself = packet_matchbssid &&
 248                         (ether_addr_equal(praddr, rtlefuse->dev_addr));
 249
 250        if (ieee80211_is_beacon(fc))
 251                packet_beacon = true;
 252        else
 253                packet_beacon = false;
 254
 255        if (packet_beacon && packet_matchbssid)
 256                rtl_priv(hw)->dm.dbginfo.num_qry_beacon_pkt++;
 257
 258        if (packet_matchbssid && ieee80211_is_data_qos(hdr->frame_control) &&
 259            !is_multicast_ether_addr(ieee80211_get_DA(hdr))) {
 260                struct ieee80211_qos_hdr *hdr_qos =
 261                                            (struct ieee80211_qos_hdr *)tmp_buf;
 262                u16 tid = le16_to_cpu(hdr_qos->qos_ctrl) & 0xf;
 263
 264                if (tid != 0 && tid != 3)
 265                        rtl_priv(hw)->dm.dbginfo.num_non_be_pkt++;
 266        }
 267
 268        _rtl92ee_query_rxphystatus(hw, pstatus, pdesc, p_drvinfo,
 269                                   packet_matchbssid, packet_toself,
 270                                   packet_beacon);
 271        rtl_process_phyinfo(hw, tmp_buf, pstatus);
 272}
 273
 274static void _rtl92ee_insert_emcontent(struct rtl_tcb_desc *ptcb_desc,
 275                                      u8 *virtualaddress8)
 276{
 277        u32 dwtmp;
 278        __le32 *virtualaddress = (__le32 *)virtualaddress8;
 279
 280        memset(virtualaddress, 0, 8);
 281
 282        set_earlymode_pktnum(virtualaddress, ptcb_desc->empkt_num);
 283        if (ptcb_desc->empkt_num == 1) {
 284                dwtmp = ptcb_desc->empkt_len[0];
 285        } else {
 286                dwtmp = ptcb_desc->empkt_len[0];
 287                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 288                dwtmp += ptcb_desc->empkt_len[1];
 289        }
 290        set_earlymode_len0(virtualaddress, dwtmp);
 291
 292        if (ptcb_desc->empkt_num <= 3) {
 293                dwtmp = ptcb_desc->empkt_len[2];
 294        } else {
 295                dwtmp = ptcb_desc->empkt_len[2];
 296                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 297                dwtmp += ptcb_desc->empkt_len[3];
 298        }
 299        set_earlymode_len1(virtualaddress, dwtmp);
 300        if (ptcb_desc->empkt_num <= 5) {
 301                dwtmp = ptcb_desc->empkt_len[4];
 302        } else {
 303                dwtmp = ptcb_desc->empkt_len[4];
 304                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 305                dwtmp += ptcb_desc->empkt_len[5];
 306        }
 307        set_earlymode_len2_1(virtualaddress, dwtmp & 0xF);
 308        set_earlymode_len2_2(virtualaddress, dwtmp >> 4);
 309        if (ptcb_desc->empkt_num <= 7) {
 310                dwtmp = ptcb_desc->empkt_len[6];
 311        } else {
 312                dwtmp = ptcb_desc->empkt_len[6];
 313                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 314                dwtmp += ptcb_desc->empkt_len[7];
 315        }
 316        set_earlymode_len3(virtualaddress, dwtmp);
 317        if (ptcb_desc->empkt_num <= 9) {
 318                dwtmp = ptcb_desc->empkt_len[8];
 319        } else {
 320                dwtmp = ptcb_desc->empkt_len[8];
 321                dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
 322                dwtmp += ptcb_desc->empkt_len[9];
 323        }
 324        set_earlymode_len4(virtualaddress, dwtmp);
 325}
 326
 327bool rtl92ee_rx_query_desc(struct ieee80211_hw *hw,
 328                           struct rtl_stats *status,
 329                           struct ieee80211_rx_status *rx_status,
 330                           u8 *pdesc8, struct sk_buff *skb)
 331{
 332        struct rtl_priv *rtlpriv = rtl_priv(hw);
 333        struct rx_fwinfo *p_drvinfo;
 334        struct ieee80211_hdr *hdr;
 335        __le32 *pdesc = (__le32 *)pdesc8;
 336        u32 phystatus = get_rx_desc_physt(pdesc);
 337        u8 wake_match;
 338
 339        if (get_rx_status_desc_rpt_sel(pdesc) == 0)
 340                status->packet_report_type = NORMAL_RX;
 341        else
 342                status->packet_report_type = C2H_PACKET;
 343        status->length = (u16)get_rx_desc_pkt_len(pdesc);
 344        status->rx_drvinfo_size = (u8)get_rx_desc_drv_info_size(pdesc) *
 345                                  RX_DRV_INFO_SIZE_UNIT;
 346        status->rx_bufshift = (u8)(get_rx_desc_shift(pdesc) & 0x03);
 347        status->icv = (u16)get_rx_desc_icv(pdesc);
 348        status->crc = (u16)get_rx_desc_crc32(pdesc);
 349        status->hwerror = (status->crc | status->icv);
 350        status->decrypted = !get_rx_desc_swdec(pdesc);
 351        status->rate = (u8)get_rx_desc_rxmcs(pdesc);
 352        status->isampdu = (bool)(get_rx_desc_paggr(pdesc) == 1);
 353        status->timestamp_low = get_rx_desc_tsfl(pdesc);
 354        status->is_cck = RTL92EE_RX_HAL_IS_CCK_RATE(status->rate);
 355
 356        status->macid = get_rx_desc_macid(pdesc);
 357        if (get_rx_status_desc_pattern_match(pdesc))
 358                wake_match = BIT(2);
 359        else if (get_rx_status_desc_magic_match(pdesc))
 360                wake_match = BIT(1);
 361        else if (get_rx_status_desc_unicast_match(pdesc))
 362                wake_match = BIT(0);
 363        else
 364                wake_match = 0;
 365        if (wake_match)
 366                RT_TRACE(rtlpriv, COMP_RXDESC, DBG_LOUD,
 367                         "GGGGGGGGGGGGGet Wakeup Packet!! WakeMatch=%d\n",
 368                         wake_match);
 369        rx_status->freq = hw->conf.chandef.chan->center_freq;
 370        rx_status->band = hw->conf.chandef.chan->band;
 371
 372        hdr = (struct ieee80211_hdr *)(skb->data + status->rx_drvinfo_size +
 373                                       status->rx_bufshift + 24);
 374
 375        if (status->crc)
 376                rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 377
 378        if (status->rx_is40mhzpacket)
 379                rx_status->bw = RATE_INFO_BW_40;
 380
 381        if (status->is_ht)
 382                rx_status->encoding = RX_ENC_HT;
 383
 384        rx_status->flag |= RX_FLAG_MACTIME_START;
 385
 386        /* hw will set status->decrypted true, if it finds the
 387         * frame is open data frame or mgmt frame.
 388         * So hw will not decryption robust managment frame
 389         * for IEEE80211w but still set status->decrypted
 390         * true, so here we should set it back to undecrypted
 391         * for IEEE80211w frame, and mac80211 sw will help
 392         * to decrypt it
 393         */
 394        if (status->decrypted) {
 395                if ((!_ieee80211_is_robust_mgmt_frame(hdr)) &&
 396                    (ieee80211_has_protected(hdr->frame_control)))
 397                        rx_status->flag |= RX_FLAG_DECRYPTED;
 398                else
 399                        rx_status->flag &= ~RX_FLAG_DECRYPTED;
 400        }
 401
 402        /* rate_idx: index of data rate into band's
 403         * supported rates or MCS index if HT rates
 404         * are use (RX_FLAG_HT)
 405         * Notice: this is diff with windows define
 406         */
 407        rx_status->rate_idx = rtlwifi_rate_mapping(hw, status->is_ht,
 408                                                   false, status->rate);
 409
 410        rx_status->mactime = status->timestamp_low;
 411        if (phystatus) {
 412                p_drvinfo = (struct rx_fwinfo *)(skb->data +
 413                                                 status->rx_bufshift + 24);
 414
 415                _rtl92ee_translate_rx_signal_stuff(hw, skb, status, pdesc8,
 416                                                   p_drvinfo);
 417        }
 418        rx_status->signal = status->recvsignalpower + 10;
 419        if (status->packet_report_type == TX_REPORT2) {
 420                status->macid_valid_entry[0] =
 421                        get_rx_rpt2_desc_macid_valid_1(pdesc);
 422                status->macid_valid_entry[1] =
 423                        get_rx_rpt2_desc_macid_valid_2(pdesc);
 424        }
 425        return true;
 426}
 427
 428/*in Windows, this == Rx_92EE_Interrupt*/
 429void rtl92ee_rx_check_dma_ok(struct ieee80211_hw *hw, u8 *header_desc8,
 430                             u8 queue_index)
 431{
 432        u8 first_seg = 0;
 433        u8 last_seg = 0;
 434        u16 total_len = 0;
 435        u16 read_cnt = 0;
 436        __le32 *header_desc = (__le32 *)header_desc8;
 437
 438        if (header_desc == NULL)
 439                return;
 440
 441        total_len = (u16)get_rx_buffer_desc_total_length(header_desc);
 442
 443        first_seg = (u8)get_rx_buffer_desc_fs(header_desc);
 444
 445        last_seg = (u8)get_rx_buffer_desc_ls(header_desc);
 446
 447        while (total_len == 0 && first_seg == 0 && last_seg == 0) {
 448                read_cnt++;
 449                total_len = (u16)get_rx_buffer_desc_total_length(header_desc);
 450                first_seg = (u8)get_rx_buffer_desc_fs(header_desc);
 451                last_seg = (u8)get_rx_buffer_desc_ls(header_desc);
 452
 453                if (read_cnt > 20)
 454                        break;
 455        }
 456}
 457
 458u16 rtl92ee_rx_desc_buff_remained_cnt(struct ieee80211_hw *hw, u8 queue_index)
 459{
 460        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 461        struct rtl_priv *rtlpriv = rtl_priv(hw);
 462        u16 read_point, write_point, remind_cnt;
 463        u32 tmp_4byte;
 464        static bool start_rx;
 465
 466        tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
 467        read_point = (u16)((tmp_4byte>>16) & 0x7ff);
 468        write_point = (u16)(tmp_4byte & 0x7ff);
 469
 470        if (write_point != rtlpci->rx_ring[queue_index].next_rx_rp) {
 471                RT_TRACE(rtlpriv, COMP_RXDESC, DBG_DMESG,
 472                         "!!!write point is 0x%x, reg 0x3B4 value is 0x%x\n",
 473                          write_point, tmp_4byte);
 474                tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
 475                read_point = (u16)((tmp_4byte>>16) & 0x7ff);
 476                write_point = (u16)(tmp_4byte & 0x7ff);
 477        }
 478
 479        if (read_point > 0)
 480                start_rx = true;
 481        if (!start_rx)
 482                return 0;
 483
 484        remind_cnt = calc_fifo_space(read_point, write_point,
 485                                     RTL_PCI_MAX_RX_COUNT);
 486
 487        if (remind_cnt == 0)
 488                return 0;
 489
 490        rtlpci->rx_ring[queue_index].next_rx_rp = write_point;
 491
 492        return remind_cnt;
 493}
 494
 495static u16 get_desc_addr_fr_q_idx(u16 queue_index)
 496{
 497        u16 desc_address;
 498
 499        switch (queue_index) {
 500        case BK_QUEUE:
 501                desc_address = REG_BKQ_TXBD_IDX;
 502                break;
 503        case BE_QUEUE:
 504                desc_address = REG_BEQ_TXBD_IDX;
 505                break;
 506        case VI_QUEUE:
 507                desc_address = REG_VIQ_TXBD_IDX;
 508                break;
 509        case VO_QUEUE:
 510                desc_address = REG_VOQ_TXBD_IDX;
 511                break;
 512        case BEACON_QUEUE:
 513                desc_address = REG_BEQ_TXBD_IDX;
 514                break;
 515        case TXCMD_QUEUE:
 516                desc_address = REG_BEQ_TXBD_IDX;
 517                break;
 518        case MGNT_QUEUE:
 519                desc_address = REG_MGQ_TXBD_IDX;
 520                break;
 521        case HIGH_QUEUE:
 522                desc_address = REG_HI0Q_TXBD_IDX;
 523                break;
 524        case HCCA_QUEUE:
 525                desc_address = REG_BEQ_TXBD_IDX;
 526                break;
 527        default:
 528                desc_address = REG_BEQ_TXBD_IDX;
 529                break;
 530        }
 531        return desc_address;
 532}
 533
 534u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
 535{
 536        struct rtl_priv *rtlpriv = rtl_priv(hw);
 537        u16 point_diff = 0;
 538        u16 current_tx_read_point, current_tx_write_point;
 539        u32 tmp_4byte;
 540
 541        tmp_4byte = rtl_read_dword(rtlpriv,
 542                                   get_desc_addr_fr_q_idx(q_idx));
 543        current_tx_read_point = (u16)((tmp_4byte >> 16) & 0x0fff);
 544        current_tx_write_point = (u16)((tmp_4byte) & 0x0fff);
 545
 546        point_diff = calc_fifo_space(current_tx_read_point,
 547                                     current_tx_write_point,
 548                                     TX_DESC_NUM_92E);
 549
 550        return point_diff;
 551}
 552
 553void rtl92ee_pre_fill_tx_bd_desc(struct ieee80211_hw *hw,
 554                                 u8 *tx_bd_desc8, u8 *desc8, u8 queue_index,
 555                                 struct sk_buff *skb, dma_addr_t addr)
 556{
 557        struct rtl_priv *rtlpriv = rtl_priv(hw);
 558        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 559        u32 pkt_len = skb->len;
 560        u16 desc_size = 40; /*tx desc size*/
 561        u32 psblen = 0;
 562        u16 tx_page_size;
 563        u32 total_packet_size;
 564        u16 current_bd_desc;
 565        u8 i;
 566        u16 real_desc_size = 0x28;
 567        u16     append_early_mode_size = 0;
 568        u8 segmentnum = 1 << (RTL8192EE_SEG_NUM + 1);
 569        dma_addr_t desc_dma_addr;
 570        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 571        __le32 *desc = (__le32 *)desc8;
 572        __le32 *tx_bd_desc = (__le32 *)tx_bd_desc8;
 573
 574        tx_page_size = 2;
 575        current_bd_desc = rtlpci->tx_ring[queue_index].cur_tx_wp;
 576
 577        total_packet_size = desc_size+pkt_len;
 578
 579        if (rtlpriv->rtlhal.earlymode_enable)   {
 580                if (queue_index < BEACON_QUEUE) {
 581                        append_early_mode_size = 8;
 582                        total_packet_size += append_early_mode_size;
 583                }
 584        }
 585
 586        if (tx_page_size > 0) {
 587                psblen = (pkt_len + real_desc_size + append_early_mode_size) /
 588                         (tx_page_size * 128);
 589
 590                if (psblen * (tx_page_size * 128) < total_packet_size)
 591                        psblen += 1;
 592        }
 593
 594        /* tx desc addr */
 595        desc_dma_addr = rtlpci->tx_ring[queue_index].dma +
 596                        (current_bd_desc * TX_DESC_SIZE);
 597
 598        /* Reset */
 599        set_tx_buff_desc_len_0(tx_bd_desc, 0);
 600        set_tx_buff_desc_psb(tx_bd_desc, 0);
 601        set_tx_buff_desc_own(tx_bd_desc, 0);
 602
 603        for (i = 1; i < segmentnum; i++) {
 604                set_txbuffer_desc_len_with_offset(tx_bd_desc, i, 0);
 605                set_txbuffer_desc_amsdu_with_offset(tx_bd_desc, i, 0);
 606                set_txbuffer_desc_add_low_with_offset(tx_bd_desc, i, 0);
 607                set_txbuffer_desc_add_high_with_offset(tx_bd_desc, i, 0, dma64);
 608        }
 609
 610        /* Clear all status */
 611        clear_pci_tx_desc_content(desc, TX_DESC_SIZE);
 612
 613        if (rtlpriv->rtlhal.earlymode_enable) {
 614                if (queue_index < BEACON_QUEUE) {
 615                        /* This if needs braces */
 616                        set_tx_buff_desc_len_0(tx_bd_desc, desc_size + 8);
 617                } else {
 618                        set_tx_buff_desc_len_0(tx_bd_desc, desc_size);
 619                }
 620        } else {
 621                set_tx_buff_desc_len_0(tx_bd_desc, desc_size);
 622        }
 623        set_tx_buff_desc_psb(tx_bd_desc, psblen);
 624        set_tx_buff_desc_addr_low_0(tx_bd_desc, desc_dma_addr);
 625        set_tx_buff_desc_addr_high_0(tx_bd_desc, ((u64)desc_dma_addr >> 32),
 626                                     dma64);
 627
 628        set_txbuffer_desc_len_with_offset(tx_bd_desc, 1, pkt_len);
 629        /* don't using extendsion mode. */
 630        set_txbuffer_desc_amsdu_with_offset(tx_bd_desc, 1, 0);
 631        set_txbuffer_desc_add_low_with_offset(tx_bd_desc, 1, addr);
 632        set_txbuffer_desc_add_high_with_offset(tx_bd_desc, 1,
 633                                               ((u64)addr >> 32), dma64);
 634
 635        set_tx_desc_pkt_size(desc, (u16)(pkt_len));
 636        set_tx_desc_tx_buffer_size(desc, (u16)(pkt_len));
 637}
 638
 639void rtl92ee_tx_fill_desc(struct ieee80211_hw *hw,
 640                          struct ieee80211_hdr *hdr, u8 *pdesc8,
 641                          u8 *pbd_desc_tx,
 642                          struct ieee80211_tx_info *info,
 643                          struct ieee80211_sta *sta,
 644                          struct sk_buff *skb,
 645                          u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
 646{
 647        struct rtl_priv *rtlpriv = rtl_priv(hw);
 648        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 649        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 650        struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 651        struct rtlwifi_tx_info *tx_info = rtl_tx_skb_cb_info(skb);
 652        u16 seq_number;
 653        __le16 fc = hdr->frame_control;
 654        unsigned int buf_len;
 655        u8 fw_qsel = _rtl92ee_map_hwqueue_to_fwqueue(skb, hw_queue);
 656        bool firstseg = ((hdr->seq_ctrl &
 657                            cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0);
 658        bool lastseg = ((hdr->frame_control &
 659                           cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) == 0);
 660        dma_addr_t mapping;
 661        u8 bw_40 = 0;
 662        u8 short_gi;
 663        __le32 *pdesc = (__le32 *)pdesc8;
 664
 665        if (mac->opmode == NL80211_IFTYPE_STATION) {
 666                bw_40 = mac->bw_40;
 667        } else if (mac->opmode == NL80211_IFTYPE_AP ||
 668                   mac->opmode == NL80211_IFTYPE_ADHOC) {
 669                if (sta)
 670                        bw_40 = sta->ht_cap.cap &
 671                                IEEE80211_HT_CAP_SUP_WIDTH_20_40;
 672        }
 673        seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 674        rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc);
 675        /* reserve 8 byte for AMPDU early mode */
 676        if (rtlhal->earlymode_enable) {
 677                skb_push(skb, EM_HDR_LEN);
 678                memset(skb->data, 0, EM_HDR_LEN);
 679        }
 680        buf_len = skb->len;
 681        mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
 682                                 PCI_DMA_TODEVICE);
 683        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 684                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 685                         "DMA mapping error\n");
 686                return;
 687        }
 688
 689        if (pbd_desc_tx != NULL)
 690                rtl92ee_pre_fill_tx_bd_desc(hw, pbd_desc_tx, pdesc8, hw_queue,
 691                                            skb, mapping);
 692
 693        if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
 694                firstseg = true;
 695                lastseg = true;
 696        }
 697        if (firstseg) {
 698                if (rtlhal->earlymode_enable) {
 699                        set_tx_desc_pkt_offset(pdesc, 1);
 700                        set_tx_desc_offset(pdesc,
 701                                           USB_HWDESC_HEADER_LEN + EM_HDR_LEN);
 702                        if (ptcb_desc->empkt_num) {
 703                                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 704                                         "Insert 8 byte.pTcb->EMPktNum:%d\n",
 705                                          ptcb_desc->empkt_num);
 706                                _rtl92ee_insert_emcontent(ptcb_desc,
 707                                                          (u8 *)(skb->data));
 708                        }
 709                } else {
 710                        set_tx_desc_offset(pdesc, USB_HWDESC_HEADER_LEN);
 711                }
 712
 713
 714                set_tx_desc_tx_rate(pdesc, ptcb_desc->hw_rate);
 715
 716                if (ieee80211_is_mgmt(fc)) {
 717                        ptcb_desc->use_driver_rate = true;
 718                } else {
 719                        if (rtlpriv->ra.is_special_data) {
 720                                ptcb_desc->use_driver_rate = true;
 721                                set_tx_desc_tx_rate(pdesc, DESC_RATE11M);
 722                        } else {
 723                                ptcb_desc->use_driver_rate = false;
 724                        }
 725                }
 726
 727                if (ptcb_desc->hw_rate > DESC_RATEMCS0)
 728                        short_gi = (ptcb_desc->use_shortgi) ? 1 : 0;
 729                else
 730                        short_gi = (ptcb_desc->use_shortpreamble) ? 1 : 0;
 731
 732                if (info->flags & IEEE80211_TX_CTL_AMPDU) {
 733                        set_tx_desc_agg_enable(pdesc, 1);
 734                        set_tx_desc_max_agg_num(pdesc, 0x14);
 735                }
 736                set_tx_desc_seq(pdesc, seq_number);
 737                set_tx_desc_rts_enable(pdesc,
 738                                       ((ptcb_desc->rts_enable &&
 739                                         !ptcb_desc->cts_enable) ? 1 : 0));
 740                set_tx_desc_hw_rts_enable(pdesc, 0);
 741                set_tx_desc_cts2self(pdesc,
 742                                     ((ptcb_desc->cts_enable) ? 1 : 0));
 743
 744                set_tx_desc_rts_rate(pdesc, ptcb_desc->rts_rate);
 745                set_tx_desc_rts_sc(pdesc, ptcb_desc->rts_sc);
 746                set_tx_desc_rts_short(pdesc,
 747                                ((ptcb_desc->rts_rate <= DESC_RATE54M) ?
 748                                 (ptcb_desc->rts_use_shortpreamble ? 1 : 0) :
 749                                 (ptcb_desc->rts_use_shortgi ? 1 : 0)));
 750
 751                if (ptcb_desc->tx_enable_sw_calc_duration)
 752                        set_tx_desc_nav_use_hdr(pdesc, 1);
 753
 754                if (bw_40) {
 755                        if (ptcb_desc->packet_bw == HT_CHANNEL_WIDTH_20_40) {
 756                                set_tx_desc_data_bw(pdesc, 1);
 757                                set_tx_desc_tx_sub_carrier(pdesc, 3);
 758                        } else {
 759                                set_tx_desc_data_bw(pdesc, 0);
 760                                set_tx_desc_tx_sub_carrier(pdesc,
 761                                                           mac->cur_40_prime_sc);
 762                        }
 763                } else {
 764                        set_tx_desc_data_bw(pdesc, 0);
 765                        set_tx_desc_tx_sub_carrier(pdesc, 0);
 766                }
 767
 768                set_tx_desc_linip(pdesc, 0);
 769                if (sta) {
 770                        u8 ampdu_density = sta->ht_cap.ampdu_density;
 771
 772                        set_tx_desc_ampdu_density(pdesc, ampdu_density);
 773                }
 774                if (info->control.hw_key) {
 775                        struct ieee80211_key_conf *key = info->control.hw_key;
 776
 777                        switch (key->cipher) {
 778                        case WLAN_CIPHER_SUITE_WEP40:
 779                        case WLAN_CIPHER_SUITE_WEP104:
 780                        case WLAN_CIPHER_SUITE_TKIP:
 781                                set_tx_desc_sec_type(pdesc, 0x1);
 782                                break;
 783                        case WLAN_CIPHER_SUITE_CCMP:
 784                                set_tx_desc_sec_type(pdesc, 0x3);
 785                                break;
 786                        default:
 787                                set_tx_desc_sec_type(pdesc, 0x0);
 788                                break;
 789                        }
 790                }
 791
 792                set_tx_desc_queue_sel(pdesc, fw_qsel);
 793                set_tx_desc_data_rate_fb_limit(pdesc, 0x1F);
 794                set_tx_desc_rts_rate_fb_limit(pdesc, 0xF);
 795                set_tx_desc_disable_fb(pdesc,
 796                                       ptcb_desc->disable_ratefallback ? 1 : 0);
 797                set_tx_desc_use_rate(pdesc, ptcb_desc->use_driver_rate ? 1 : 0);
 798
 799                /*set_tx_desc_pwr_status(pdesc, pwr_status);*/
 800                /* Set TxRate and RTSRate in TxDesc  */
 801                /* This prevent Tx initial rate of new-coming packets */
 802                /* from being overwritten by retried  packet rate.*/
 803                if (!ptcb_desc->use_driver_rate) {
 804                        /*set_tx_desc_rts_rate(pdesc, 0x08); */
 805                        /* set_tx_desc_tx_rate(pdesc, 0x0b); */
 806                }
 807                if (ieee80211_is_data_qos(fc)) {
 808                        if (mac->rdg_en) {
 809                                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 810                                         "Enable RDG function.\n");
 811                                set_tx_desc_rdg_enable(pdesc, 1);
 812                                set_tx_desc_htc(pdesc, 1);
 813                        }
 814                }
 815                /* tx report */
 816                rtl_set_tx_report(ptcb_desc, pdesc8, hw, tx_info);
 817        }
 818
 819        set_tx_desc_first_seg(pdesc, (firstseg ? 1 : 0));
 820        set_tx_desc_last_seg(pdesc, (lastseg ? 1 : 0));
 821        set_tx_desc_tx_buffer_address(pdesc, mapping);
 822        if (rtlpriv->dm.useramask) {
 823                set_tx_desc_rate_id(pdesc, ptcb_desc->ratr_index);
 824                set_tx_desc_macid(pdesc, ptcb_desc->mac_id);
 825        } else {
 826                set_tx_desc_rate_id(pdesc, 0xC + ptcb_desc->ratr_index);
 827                set_tx_desc_macid(pdesc, ptcb_desc->ratr_index);
 828        }
 829
 830        set_tx_desc_more_frag(pdesc, (lastseg ? 0 : 1));
 831        if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
 832            is_broadcast_ether_addr(ieee80211_get_DA(hdr))) {
 833                set_tx_desc_bmc(pdesc, 1);
 834        }
 835        RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n");
 836}
 837
 838void rtl92ee_tx_fill_cmddesc(struct ieee80211_hw *hw,
 839                             u8 *pdesc8, bool firstseg,
 840                             bool lastseg, struct sk_buff *skb)
 841{
 842        struct rtl_priv *rtlpriv = rtl_priv(hw);
 843        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 844        u8 fw_queue = QSLT_BEACON;
 845        dma_addr_t mapping = pci_map_single(rtlpci->pdev,
 846                                            skb->data, skb->len,
 847                                            PCI_DMA_TODEVICE);
 848        u8 txdesc_len = 40;
 849        __le32 *pdesc = (__le32 *)pdesc8;
 850
 851        if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 852                RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 853                         "DMA mapping error\n");
 854                return;
 855        }
 856        clear_pci_tx_desc_content(pdesc, txdesc_len);
 857
 858        if (firstseg)
 859                set_tx_desc_offset(pdesc, txdesc_len);
 860
 861        set_tx_desc_tx_rate(pdesc, DESC_RATE1M);
 862
 863        set_tx_desc_seq(pdesc, 0);
 864
 865        set_tx_desc_linip(pdesc, 0);
 866
 867        set_tx_desc_queue_sel(pdesc, fw_queue);
 868
 869        set_tx_desc_first_seg(pdesc, 1);
 870        set_tx_desc_last_seg(pdesc, 1);
 871
 872        set_tx_desc_tx_buffer_size(pdesc, (u16)(skb->len));
 873
 874        set_tx_desc_tx_buffer_address(pdesc, mapping);
 875
 876        set_tx_desc_rate_id(pdesc, 7);
 877        set_tx_desc_macid(pdesc, 0);
 878
 879        set_tx_desc_own(pdesc, 1);
 880
 881        set_tx_desc_pkt_size(pdesc, (u16)(skb->len));
 882
 883        set_tx_desc_first_seg(pdesc, 1);
 884        set_tx_desc_last_seg(pdesc, 1);
 885
 886        set_tx_desc_offset(pdesc, 40);
 887
 888        set_tx_desc_use_rate(pdesc, 1);
 889
 890        RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD,
 891                      "H2C Tx Cmd Content\n", pdesc, txdesc_len);
 892}
 893
 894void rtl92ee_set_desc(struct ieee80211_hw *hw, u8 *pdesc8, bool istx,
 895                      u8 desc_name, u8 *val)
 896{
 897        struct rtl_priv *rtlpriv = rtl_priv(hw);
 898        u8 q_idx = *val;
 899        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 900        __le32 *pdesc = (__le32 *)pdesc8;
 901
 902        if (istx) {
 903                switch (desc_name) {
 904                case HW_DESC_TX_NEXTDESC_ADDR:
 905                        set_tx_desc_next_desc_address(pdesc, *(u32 *)val);
 906                        break;
 907                case HW_DESC_OWN:{
 908                        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 909                        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[q_idx];
 910                        u16 max_tx_desc = ring->entries;
 911
 912                        if (q_idx == BEACON_QUEUE) {
 913                                ring->cur_tx_wp = 0;
 914                                ring->cur_tx_rp = 0;
 915                                set_tx_buff_desc_own(pdesc, 1);
 916                                return;
 917                        }
 918
 919                        /* make sure tx desc is available by caller */
 920                        ring->cur_tx_wp = ((ring->cur_tx_wp + 1) % max_tx_desc);
 921
 922                        rtl_write_word(rtlpriv,
 923                                       get_desc_addr_fr_q_idx(q_idx),
 924                                       ring->cur_tx_wp);
 925                }
 926                break;
 927                }
 928        } else {
 929                switch (desc_name) {
 930                case HW_DESC_RX_PREPARE:
 931                        set_rx_buffer_desc_ls(pdesc, 0);
 932                        set_rx_buffer_desc_fs(pdesc, 0);
 933                        set_rx_buffer_desc_total_length(pdesc, 0);
 934
 935                        set_rx_buffer_desc_data_length(pdesc,
 936                                                       MAX_RECEIVE_BUFFER_SIZE +
 937                                                       RX_DESC_SIZE);
 938
 939                        set_rx_buffer_physical_low(pdesc, (*(dma_addr_t *)val) &
 940                                                   DMA_BIT_MASK(32));
 941                        set_rx_buffer_physical_high(pdesc,
 942                                                    ((u64)(*(dma_addr_t *)val)
 943                                                    >> 32),
 944                                                    dma64);
 945                        break;
 946                case HW_DESC_RXERO:
 947                        set_rx_desc_eor(pdesc, 1);
 948                        break;
 949                default:
 950                        WARN_ONCE(true,
 951                                  "rtl8192ee: ERR rxdesc :%d not processed\n",
 952                                  desc_name);
 953                        break;
 954                }
 955        }
 956}
 957
 958u64 rtl92ee_get_desc(struct ieee80211_hw *hw,
 959                     u8 *pdesc8, bool istx, u8 desc_name)
 960{
 961        struct rtl_priv *rtlpriv = rtl_priv(hw);
 962        u64 ret = 0;
 963        bool dma64 = rtlpriv->cfg->mod_params->dma64;
 964        __le32 *pdesc = (__le32 *)pdesc8;
 965
 966        if (istx) {
 967                switch (desc_name) {
 968                case HW_DESC_OWN:
 969                        ret = get_tx_desc_own(pdesc);
 970                        break;
 971                case HW_DESC_TXBUFF_ADDR:
 972                        ret = get_txbuffer_desc_addr_low(pdesc, 1);
 973                        ret |= (u64)get_txbuffer_desc_addr_high(pdesc, 1,
 974                                                                dma64) << 32;
 975                        break;
 976                default:
 977                        WARN_ONCE(true,
 978                                  "rtl8192ee: ERR txdesc :%d not processed\n",
 979                                  desc_name);
 980                        break;
 981                }
 982        } else {
 983                switch (desc_name) {
 984                case HW_DESC_OWN:
 985                        ret = get_rx_desc_own(pdesc);
 986                        break;
 987                case HW_DESC_RXPKT_LEN:
 988                        ret = get_rx_desc_pkt_len(pdesc);
 989                        break;
 990                case HW_DESC_RXBUFF_ADDR:
 991                        ret = get_rx_desc_buff_addr(pdesc);
 992                        break;
 993                default:
 994                        WARN_ONCE(true,
 995                                  "rtl8192ee: ERR rxdesc :%d not processed\n",
 996                                  desc_name);
 997                        break;
 998                }
 999        }
1000        return ret;
1001}
1002
1003bool rtl92ee_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue, u16 index)
1004{
1005        struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1006        struct rtl_priv *rtlpriv = rtl_priv(hw);
1007        u16 read_point, write_point;
1008        bool ret = false;
1009        static u8 stop_report_cnt;
1010        struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
1011
1012        {
1013                u16 cur_tx_rp, cur_tx_wp;
1014                u32 tmpu32;
1015
1016                tmpu32 =
1017                  rtl_read_dword(rtlpriv,
1018                                 get_desc_addr_fr_q_idx(hw_queue));
1019                cur_tx_rp = (u16)((tmpu32 >> 16) & 0x0fff);
1020                cur_tx_wp = (u16)(tmpu32 & 0x0fff);
1021
1022                /* don't need to update ring->cur_tx_wp */
1023                ring->cur_tx_rp = cur_tx_rp;
1024        }
1025
1026        read_point = ring->cur_tx_rp;
1027        write_point = ring->cur_tx_wp;
1028
1029        if (write_point > read_point) {
1030                if (index < write_point && index >= read_point)
1031                        ret = false;
1032                else
1033                        ret = true;
1034        } else if (write_point < read_point) {
1035                if (index > write_point && index < read_point)
1036                        ret = true;
1037                else
1038                        ret = false;
1039        } else {
1040                if (index != read_point)
1041                        ret = true;
1042        }
1043
1044        if (hw_queue == BEACON_QUEUE)
1045                ret = true;
1046
1047        if (rtlpriv->rtlhal.driver_is_goingto_unload ||
1048            rtlpriv->psc.rfoff_reason > RF_CHANGE_BY_PS)
1049                ret = true;
1050
1051        if (hw_queue < BEACON_QUEUE) {
1052                if (!ret)
1053                        stop_report_cnt++;
1054                else
1055                        stop_report_cnt = 0;
1056        }
1057
1058        return ret;
1059}
1060
1061void rtl92ee_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
1062{
1063}
1064