drivers/net/wireless/rtlwifi/rtl8192se/trx.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "../wifi.h"
  31 #include "../pci.h"
  32 #include "../base.h"
  33 #include "../stats.h"
  34 #include "reg.h"
  35 #include "def.h"
  36 #include "phy.h"
  37 #include "fw.h"
  38 #include "trx.h"
  39 #include "led.h"
  40
  41 static u8 _rtl92se_map_hwqueue_to_fwqueue(struct sk_buff *skb,  u8 skb_queue)
  42 {
  43         __le16 fc = rtl_get_fc(skb);
  44
  45         if (unlikely(ieee80211_is_beacon(fc)))
  46                 return QSLT_BEACON;
  47         if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
  48                 return QSLT_MGNT;
  49         if (ieee80211_is_nullfunc(fc))
  50                 return QSLT_HIGH;
  51
  52         return skb->priority;
  53 }
  54
  55 static void _rtl92se_query_rxphystatus(struct ieee80211_hw *hw,
  56                                        struct rtl_stats *pstats, u8 *pdesc,
  57                                        struct rx_fwinfo *p_drvinfo,
  58                                        bool packet_match_bssid,
  59                                        bool packet_toself,
  60                                        bool packet_beacon)
  61 {
  62         struct rtl_priv *rtlpriv = rtl_priv(hw);
  63         struct phy_sts_cck_8192s_t *cck_buf;
  64         struct rtl_ps_ctl *ppsc = rtl_psc(rtlpriv);
  65         s8 rx_pwr_all = 0, rx_pwr[4];
  66         u8 rf_rx_num = 0, evm, pwdb_all;
  67         u8 i, max_spatial_stream;
  68         u32 rssi, total_rssi = 0;
  69         bool is_cck = pstats->is_cck;
  70
  71         pstats->packet_matchbssid = packet_match_bssid;
  72         pstats->packet_toself = packet_toself;
  73         pstats->packet_beacon = packet_beacon;
  74         pstats->rx_mimo_sig_qual[0] = -1;
  75         pstats->rx_mimo_sig_qual[1] = -1;
  76
  77         if (is_cck) {
  78                 u8 report, cck_highpwr;
  79                 cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
  80
  81                 if (ppsc->rfpwr_state == ERFON)
  82                         cck_highpwr = (u8) rtl_get_bbreg(hw,
  83                                                 RFPGA0_XA_HSSIPARAMETER2,
  84                                                 0x200);
  85                 else
  86                         cck_highpwr = false;
  87
  88                 if (!cck_highpwr) {
  89                         u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
  90                         report = cck_buf->cck_agc_rpt & 0xc0;
  91                         report = report >> 6;
  92                         switch (report) {
  93                         case 0x3:
  94                                 rx_pwr_all = -40 - (cck_agc_rpt & 0x3e);
  95                                 break;
  96                         case 0x2:
  97                                 rx_pwr_all = -20 - (cck_agc_rpt & 0x3e);
  98                                 break;
  99                         case 0x1:
 100                                 rx_pwr_all = -2 - (cck_agc_rpt & 0x3e);
 101                                 break;
 102                         case 0x0:
 103                                 rx_pwr_all = 14 - (cck_agc_rpt & 0x3e);
 104                                 break;
 105                         }
 106                 } else {
 107                         u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
 108                         report = p_drvinfo->cfosho[0] & 0x60;
 109                         report = report >> 5;
 110                         switch (report) {
 111                         case 0x3:
 112                                 rx_pwr_all = -40 - ((cck_agc_rpt & 0x1f) << 1);
 113                                 break;
 114                         case 0x2:
 115                                 rx_pwr_all = -20 - ((cck_agc_rpt & 0x1f) << 1);
 116                                 break;
 117                         case 0x1:
 118                                 rx_pwr_all = -2 - ((cck_agc_rpt & 0x1f) << 1);
 119                                 break;
 120                         case 0x0:
 121                                 rx_pwr_all = 14 - ((cck_agc_rpt & 0x1f) << 1);
 122                                 break;
 123                         }
 124                 }
 125
 126                 pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 127
 128                 /* CCK gain is smaller than OFDM/MCS gain,  */
 129                 /* so we add gain diff by experiences, the val is 6 */
 130                 pwdb_all += 6;
 131                 if (pwdb_all > 100)
 132                         pwdb_all = 100;
 133                 /* modify the offset to make the same gain index with OFDM. */
 134                 if (pwdb_all > 34 && pwdb_all <= 42)
 135                         pwdb_all -= 2;
 136                 else if (pwdb_all > 26 && pwdb_all <= 34)
 137                         pwdb_all -= 6;
 138                 else if (pwdb_all > 14 && pwdb_all <= 26)
 139                         pwdb_all -= 8;
 140                 else if (pwdb_all > 4 && pwdb_all <= 14)
 141                         pwdb_all -= 4;
 142
 143                 pstats->rx_pwdb_all = pwdb_all;
 144                 pstats->recvsignalpower = rx_pwr_all;
 145
 146                 if (packet_match_bssid) {
 147                         u8 sq;
 148                         if (pstats->rx_pwdb_all > 40) {
 149                                 sq = 100;
 150                         } else {
 151                                 sq = cck_buf->sq_rpt;
 152                                 if (sq > 64)
 153                                         sq = 0;
 154                                 else if (sq < 20)
 155                                         sq = 100;
 156                                 else
 157                                         sq = ((64 - sq) * 100) / 44;
 158                         }
 159
 160                         pstats->signalquality = sq;
 161                         pstats->rx_mimo_sig_qual[0] = sq;
 162                         pstats->rx_mimo_sig_qual[1] = -1;
 163                 }
 164         } else {
 165                 rtlpriv->dm.rfpath_rxenable[0] =
 166                     rtlpriv->dm.rfpath_rxenable[1] = true;
 167                 for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) {
 168                         if (rtlpriv->dm.rfpath_rxenable[i])
 169                                 rf_rx_num++;
 170
 171                         rx_pwr[i] = ((p_drvinfo->gain_trsw[i] &
 172                                     0x3f) * 2) - 110;
 173                         rssi = rtl_query_rxpwrpercentage(rx_pwr[i]);
 174                         total_rssi += rssi;
 175                         rtlpriv->stats.rx_snr_db[i] =
 176                                          (long)(p_drvinfo->rxsnr[i] / 2);
 177
 178                         if (packet_match_bssid)
 179                                 pstats->rx_mimo_signalstrength[i] = (u8) rssi;
 180                 }
 181
 182                 rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
 183                 pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
 184                 pstats->rx_pwdb_all = pwdb_all;
 185                 pstats->rxpower = rx_pwr_all;
 186                 pstats->recvsignalpower = rx_pwr_all;
 187
 188                 if (pstats->is_ht && pstats->rate >= DESC92_RATEMCS8 &&
 189                     pstats->rate <= DESC92_RATEMCS15)
 190                         max_spatial_stream = 2;
 191                 else
 192                         max_spatial_stream = 1;
 193
 194                 for (i = 0; i < max_spatial_stream; i++) {
 195                         evm = rtl_evm_db_to_percentage(p_drvinfo->rxevm[i]);
 196
 197                         if (packet_match_bssid) {
 198                                 if (i == 0)
 199                                         pstats->signalquality = (u8)(evm &
 200                                                                  0xff);
 201                                 pstats->rx_mimo_sig_qual[i] = (u8) (evm & 0xff);
 202                         }
 203                 }
 204         }
 205
 206         if (is_cck)
 207                 pstats->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
 208                                          pwdb_all));
 209         else if (rf_rx_num != 0)
 210                 pstats->signalstrength = (u8) (rtl_signal_scale_mapping(hw,
 211                                 total_rssi /= rf_rx_num));
 212 }
 213
 214 static void _rtl92se_translate_rx_signal_stuff(struct ieee80211_hw *hw,
 215                 struct sk_buff *skb, struct rtl_stats *pstats,
 216                 u8 *pdesc, struct rx_fwinfo *p_drvinfo)
 217 {
 218         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 219         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 220
 221         struct ieee80211_hdr *hdr;
 222         u8 *tmp_buf;
 223         u8 *praddr;
 224         __le16 fc;
 225         u16 type, cfc;
 226         bool packet_matchbssid, packet_toself, packet_beacon = false;
 227
 228         tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
 229
 230         hdr = (struct ieee80211_hdr *)tmp_buf;
 231         fc = hdr->frame_control;
 232         cfc = le16_to_cpu(fc);
 233         type = WLAN_FC_GET_TYPE(fc);
 234         praddr = hdr->addr1;
 235
 236         packet_matchbssid = ((IEEE80211_FTYPE_CTL != type) &&
 237              ether_addr_equal(mac->bssid,
 238                               (cfc & IEEE80211_FCTL_TODS) ? hdr->addr1 :
 239                               (cfc & 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         _rtl92se_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
 250                         packet_matchbssid, packet_toself, packet_beacon);
 251         rtl_process_phyinfo(hw, tmp_buf, pstats);
 252 }
 253
 254 bool rtl92se_rx_query_desc(struct ieee80211_hw *hw, struct rtl_stats *stats,
 255                            struct ieee80211_rx_status *rx_status, u8 *pdesc,
 256                            struct sk_buff *skb)
 257 {
 258         struct rx_fwinfo *p_drvinfo;
 259         u32 phystatus = (u32)GET_RX_STATUS_DESC_PHY_STATUS(pdesc);
 260         struct ieee80211_hdr *hdr;
 261         bool first_ampdu = false;
 262
 263         stats->length = (u16)GET_RX_STATUS_DESC_PKT_LEN(pdesc);
 264         stats->rx_drvinfo_size = (u8)GET_RX_STATUS_DESC_DRVINFO_SIZE(pdesc) * 8;
 265         stats->rx_bufshift = (u8)(GET_RX_STATUS_DESC_SHIFT(pdesc) & 0x03);
 266         stats->icv = (u16)GET_RX_STATUS_DESC_ICV(pdesc);
 267         stats->crc = (u16)GET_RX_STATUS_DESC_CRC32(pdesc);
 268         stats->hwerror = (u16)(stats->crc | stats->icv);
 269         stats->decrypted = !GET_RX_STATUS_DESC_SWDEC(pdesc);
 270
 271         stats->rate = (u8)GET_RX_STATUS_DESC_RX_MCS(pdesc);
 272         stats->shortpreamble = (u16)GET_RX_STATUS_DESC_SPLCP(pdesc);
 273         stats->isampdu = (bool)(GET_RX_STATUS_DESC_PAGGR(pdesc) == 1);
 274         stats->isfirst_ampdu = (bool) ((GET_RX_STATUS_DESC_PAGGR(pdesc) == 1)
 275                                && (GET_RX_STATUS_DESC_FAGGR(pdesc) == 1));
 276         stats->timestamp_low = GET_RX_STATUS_DESC_TSFL(pdesc);
 277         stats->rx_is40Mhzpacket = (bool)GET_RX_STATUS_DESC_BW(pdesc);
 278         stats->is_ht = (bool)GET_RX_STATUS_DESC_RX_HT(pdesc);
 279         stats->is_cck = SE_RX_HAL_IS_CCK_RATE(pdesc);
 280
 281         if (stats->hwerror)
 282                 return false;
 283
 284         rx_status->freq = hw->conf.chandef.chan->center_freq;
 285         rx_status->band = hw->conf.chandef.chan->band;
 286
 287         if (stats->crc)
 288                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 289
 290         if (stats->rx_is40Mhzpacket)
 291                 rx_status->flag |= RX_FLAG_40MHZ;
 292
 293         if (stats->is_ht)
 294                 rx_status->flag |= RX_FLAG_HT;
 295
 296         rx_status->flag |= RX_FLAG_MACTIME_START;
 297
 298         /* hw will set stats->decrypted true, if it finds the
 299          * frame is open data frame or mgmt frame,
 300          * hw will not decrypt robust managment frame
 301          * for IEEE80211w but still set stats->decrypted
 302          * true, so here we should set it back to undecrypted
 303          * for IEEE80211w frame, and mac80211 sw will help
 304          * to decrypt it */
 305         if (stats->decrypted) {
 306                 hdr = (struct ieee80211_hdr *)(skb->data +
 307                        stats->rx_drvinfo_size + stats->rx_bufshift);
 308
 309                 if (!hdr) {
 310                         /* during testing, hdr was NULL here */
 311                         return false;
 312                 }
 313                 if ((ieee80211_is_robust_mgmt_frame(hdr)) &&
 314                         (ieee80211_has_protected(hdr->frame_control)))
 315                         rx_status->flag &= ~RX_FLAG_DECRYPTED;
 316                 else
 317                         rx_status->flag |= RX_FLAG_DECRYPTED;
 318         }
 319
 320         rx_status->rate_idx = rtlwifi_rate_mapping(hw,
 321                               stats->is_ht, stats->rate, first_ampdu);
 322
 323         rx_status->mactime = stats->timestamp_low;
 324         if (phystatus) {
 325                 p_drvinfo = (struct rx_fwinfo *)(skb->data +
 326                                                  stats->rx_bufshift);
 327                 _rtl92se_translate_rx_signal_stuff(hw, skb, stats, pdesc,
 328                                                    p_drvinfo);
 329         }
 330
 331         /*rx_status->qual = stats->signal; */
 332         rx_status->signal = stats->rssi + 10;
 333         /*rx_status->noise = -stats->noise; */
 334
 335         return true;
 336 }
 337
 338 void rtl92se_tx_fill_desc(struct ieee80211_hw *hw,
 339                 struct ieee80211_hdr *hdr, u8 *pdesc_tx,
 340                 struct ieee80211_tx_info *info,
 341                 struct ieee80211_sta *sta,
 342                 struct sk_buff *skb,
 343                 u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
 344 {
 345         struct rtl_priv *rtlpriv = rtl_priv(hw);
 346         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 347         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 348         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 349         u8 *pdesc = pdesc_tx;
 350         u16 seq_number;
 351         __le16 fc = hdr->frame_control;
 352         u8 reserved_macid = 0;
 353         u8 fw_qsel = _rtl92se_map_hwqueue_to_fwqueue(skb, hw_queue);
 354         bool firstseg = (!(hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)));
 355         bool lastseg = (!(hdr->frame_control &
 356                         cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)));
 357         dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
 358                     PCI_DMA_TODEVICE);
 359         u8 bw_40 = 0;
 360
 361         if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 362                 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 363                          "DMA mapping error");
 364                 return;
 365         }
 366         if (mac->opmode == NL80211_IFTYPE_STATION) {
 367                 bw_40 = mac->bw_40;
 368         } else if (mac->opmode == NL80211_IFTYPE_AP ||
 369                 mac->opmode == NL80211_IFTYPE_ADHOC) {
 370                 if (sta)
 371                         bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
 372         }
 373
 374         seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 375
 376         rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc);
 377
 378         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_DESC_SIZE_RTL8192S);
 379
 380         if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
 381                 firstseg = true;
 382                 lastseg = true;
 383         }
 384
 385         if (firstseg) {
 386                 if (rtlpriv->dm.useramask) {
 387                         /* set txdesc macId */
 388                         if (ptcb_desc->mac_id < 32) {
 389                                 SET_TX_DESC_MACID(pdesc, ptcb_desc->mac_id);
 390                                 reserved_macid |= ptcb_desc->mac_id;
 391                         }
 392                 }
 393                 SET_TX_DESC_RSVD_MACID(pdesc, reserved_macid);
 394
 395                 SET_TX_DESC_TXHT(pdesc, ((ptcb_desc->hw_rate >=
 396                                  DESC92_RATEMCS0) ? 1 : 0));
 397
 398                 if (rtlhal->version == VERSION_8192S_ACUT) {
 399                         if (ptcb_desc->hw_rate == DESC92_RATE1M ||
 400                                 ptcb_desc->hw_rate  == DESC92_RATE2M ||
 401                                 ptcb_desc->hw_rate == DESC92_RATE5_5M ||
 402                                 ptcb_desc->hw_rate == DESC92_RATE11M) {
 403                                 ptcb_desc->hw_rate = DESC92_RATE12M;
 404                         }
 405                 }
 406
 407                 SET_TX_DESC_TX_RATE(pdesc, ptcb_desc->hw_rate);
 408
 409                 if (ptcb_desc->use_shortgi || ptcb_desc->use_shortpreamble)
 410                         SET_TX_DESC_TX_SHORT(pdesc, 0);
 411
 412                 /* Aggregation related */
 413                 if (info->flags & IEEE80211_TX_CTL_AMPDU)
 414                         SET_TX_DESC_AGG_ENABLE(pdesc, 1);
 415
 416                 /* For AMPDU, we must insert SSN into TX_DESC */
 417                 SET_TX_DESC_SEQ(pdesc, seq_number);
 418
 419                 /* Protection mode related */
 420                 /* For 92S, if RTS/CTS are set, HW will execute RTS. */
 421                 /* We choose only one protection mode to execute */
 422                 SET_TX_DESC_RTS_ENABLE(pdesc, ((ptcb_desc->rts_enable &&
 423                                 !ptcb_desc->cts_enable) ? 1 : 0));
 424                 SET_TX_DESC_CTS_ENABLE(pdesc, ((ptcb_desc->cts_enable) ?
 425                                        1 : 0));
 426                 SET_TX_DESC_RTS_STBC(pdesc, ((ptcb_desc->rts_stbc) ? 1 : 0));
 427
 428                 SET_TX_DESC_RTS_RATE(pdesc, ptcb_desc->rts_rate);
 429                 SET_TX_DESC_RTS_BANDWIDTH(pdesc, 0);
 430                 SET_TX_DESC_RTS_SUB_CARRIER(pdesc, ptcb_desc->rts_sc);
 431                 SET_TX_DESC_RTS_SHORT(pdesc, ((ptcb_desc->rts_rate <=
 432                        DESC92_RATE54M) ?
 433                        (ptcb_desc->rts_use_shortpreamble ? 1 : 0)
 434                        : (ptcb_desc->rts_use_shortgi ? 1 : 0)));
 435
 436
 437                 /* Set Bandwidth and sub-channel settings. */
 438                 if (bw_40) {
 439                         if (ptcb_desc->packet_bw) {
 440                                 SET_TX_DESC_TX_BANDWIDTH(pdesc, 1);
 441                                 /* use duplicated mode */
 442                                 SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0);
 443                         } else {
 444                                 SET_TX_DESC_TX_BANDWIDTH(pdesc, 0);
 445                                 SET_TX_DESC_TX_SUB_CARRIER(pdesc,
 446                                                    mac->cur_40_prime_sc);
 447                         }
 448                 } else {
 449                         SET_TX_DESC_TX_BANDWIDTH(pdesc, 0);
 450                         SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0);
 451                 }
 452
 453                 /* 3 Fill necessary field in First Descriptor */
 454                 /*DWORD 0*/
 455                 SET_TX_DESC_LINIP(pdesc, 0);
 456                 SET_TX_DESC_OFFSET(pdesc, 32);
 457                 SET_TX_DESC_PKT_SIZE(pdesc, (u16) skb->len);
 458
 459                 /*DWORD 1*/
 460                 SET_TX_DESC_RA_BRSR_ID(pdesc, ptcb_desc->ratr_index);
 461
 462                 /* Fill security related */
 463                 if (info->control.hw_key) {
 464                         struct ieee80211_key_conf *keyconf;
 465
 466                         keyconf = info->control.hw_key;
 467                         switch (keyconf->cipher) {
 468                         case WLAN_CIPHER_SUITE_WEP40:
 469                         case WLAN_CIPHER_SUITE_WEP104:
 470                                 SET_TX_DESC_SEC_TYPE(pdesc, 0x1);
 471                                 break;
 472                         case WLAN_CIPHER_SUITE_TKIP:
 473                                 SET_TX_DESC_SEC_TYPE(pdesc, 0x2);
 474                                 break;
 475                         case WLAN_CIPHER_SUITE_CCMP:
 476                                 SET_TX_DESC_SEC_TYPE(pdesc, 0x3);
 477                                 break;
 478                         default:
 479                                 SET_TX_DESC_SEC_TYPE(pdesc, 0x0);
 480                                 break;
 481
 482                         }
 483                 }
 484
 485                 /* Set Packet ID */
 486                 SET_TX_DESC_PACKET_ID(pdesc, 0);
 487
 488                 /* We will assign magement queue to BK. */
 489                 SET_TX_DESC_QUEUE_SEL(pdesc, fw_qsel);
 490
 491                 /* Alwasy enable all rate fallback range */
 492                 SET_TX_DESC_DATA_RATE_FB_LIMIT(pdesc, 0x1F);
 493
 494                 /* Fix: I don't kown why hw use 6.5M to tx when set it */
 495                 SET_TX_DESC_USER_RATE(pdesc,
 496                                       ptcb_desc->use_driver_rate ? 1 : 0);
 497
 498                 /* Set NON_QOS bit. */
 499                 if (!ieee80211_is_data_qos(fc))
 500                         SET_TX_DESC_NON_QOS(pdesc, 1);
 501
 502         }
 503
 504         /* Fill fields that are required to be initialized
 505          * in all of the descriptors */
 506         /*DWORD 0 */
 507         SET_TX_DESC_FIRST_SEG(pdesc, (firstseg ? 1 : 0));
 508         SET_TX_DESC_LAST_SEG(pdesc, (lastseg ? 1 : 0));
 509
 510         /* DWORD 7 */
 511         SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16) skb->len);
 512
 513         /* DOWRD 8 */
 514         SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
 515
 516         RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n");
 517 }
 518
 519 void rtl92se_tx_fill_cmddesc(struct ieee80211_hw *hw, u8 *pdesc,
 520         bool firstseg, bool lastseg, struct sk_buff *skb)
 521 {
 522         struct rtl_priv *rtlpriv = rtl_priv(hw);
 523         struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 524         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 525         struct rtl_tcb_desc *tcb_desc = (struct rtl_tcb_desc *)(skb->cb);
 526
 527         dma_addr_t mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
 528                         PCI_DMA_TODEVICE);
 529
 530         if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
 531                 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 532                          "DMA mapping error");
 533                 return;
 534         }
 535         /* Clear all status     */
 536         CLEAR_PCI_TX_DESC_CONTENT(pdesc, TX_CMDDESC_SIZE_RTL8192S);
 537
 538         /* This bit indicate this packet is used for FW download. */
 539         if (tcb_desc->cmd_or_init == DESC_PACKET_TYPE_INIT) {
 540                 /* For firmware downlaod we only need to set LINIP */
 541                 SET_TX_DESC_LINIP(pdesc, tcb_desc->last_inipkt);
 542
 543                 /* 92SE must set as 1 for firmware download HW DMA error */
 544                 SET_TX_DESC_FIRST_SEG(pdesc, 1);
 545                 SET_TX_DESC_LAST_SEG(pdesc, 1);
 546
 547                 /* 92SE need not to set TX packet size when firmware download */
 548                 SET_TX_DESC_PKT_SIZE(pdesc, (u16)(skb->len));
 549                 SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len));
 550                 SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
 551
 552                 wmb();
 553                 SET_TX_DESC_OWN(pdesc, 1);
 554         } else { /* H2C Command Desc format (Host TXCMD) */
 555                 /* 92SE must set as 1 for firmware download HW DMA error */
 556                 SET_TX_DESC_FIRST_SEG(pdesc, 1);
 557                 SET_TX_DESC_LAST_SEG(pdesc, 1);
 558
 559                 SET_TX_DESC_OFFSET(pdesc, 0x20);
 560
 561                 /* Buffer size + command header */
 562                 SET_TX_DESC_PKT_SIZE(pdesc, (u16)(skb->len));
 563                 /* Fixed queue of H2C command */
 564                 SET_TX_DESC_QUEUE_SEL(pdesc, 0x13);
 565
 566                 SET_BITS_TO_LE_4BYTE(skb->data, 24, 7, rtlhal->h2c_txcmd_seq);
 567
 568                 SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len));
 569                 SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
 570
 571                 wmb();
 572                 SET_TX_DESC_OWN(pdesc, 1);
 573
 574         }
 575 }
 576
 577 void rtl92se_set_desc(u8 *pdesc, bool istx, u8 desc_name, u8 *val)
 578 {
 579         if (istx) {
 580                 switch (desc_name) {
 581                 case HW_DESC_OWN:
 582                         wmb();
 583                         SET_TX_DESC_OWN(pdesc, 1);
 584                         break;
 585                 case HW_DESC_TX_NEXTDESC_ADDR:
 586                         SET_TX_DESC_NEXT_DESC_ADDRESS(pdesc, *(u32 *) val);
 587                         break;
 588                 default:
 589                         RT_ASSERT(false, "ERR txdesc :%d not process\n",
 590                                   desc_name);
 591                         break;
 592                 }
 593         } else {
 594                 switch (desc_name) {
 595                 case HW_DESC_RXOWN:
 596                         wmb();
 597                         SET_RX_STATUS_DESC_OWN(pdesc, 1);
 598                         break;
 599                 case HW_DESC_RXBUFF_ADDR:
 600                         SET_RX_STATUS__DESC_BUFF_ADDR(pdesc, *(u32 *) val);
 601                         break;
 602                 case HW_DESC_RXPKT_LEN:
 603                         SET_RX_STATUS_DESC_PKT_LEN(pdesc, *(u32 *) val);
 604                         break;
 605                 case HW_DESC_RXERO:
 606                         SET_RX_STATUS_DESC_EOR(pdesc, 1);
 607                         break;
 608                 default:
 609                         RT_ASSERT(false, "ERR rxdesc :%d not process\n",
 610                                   desc_name);
 611                         break;
 612                 }
 613         }
 614 }
 615
 616 u32 rtl92se_get_desc(u8 *desc, bool istx, u8 desc_name)
 617 {
 618         u32 ret = 0;
 619
 620         if (istx) {
 621                 switch (desc_name) {
 622                 case HW_DESC_OWN:
 623                         ret = GET_TX_DESC_OWN(desc);
 624                         break;
 625                 case HW_DESC_TXBUFF_ADDR:
 626                         ret = GET_TX_DESC_TX_BUFFER_ADDRESS(desc);
 627                         break;
 628                 default:
 629                         RT_ASSERT(false, "ERR txdesc :%d not process\n",
 630                                   desc_name);
 631                         break;
 632                 }
 633         } else {
 634                 switch (desc_name) {
 635                 case HW_DESC_OWN:
 636                         ret = GET_RX_STATUS_DESC_OWN(desc);
 637                         break;
 638                 case HW_DESC_RXPKT_LEN:
 639                         ret = GET_RX_STATUS_DESC_PKT_LEN(desc);
 640                         break;
 641                 default:
 642                         RT_ASSERT(false, "ERR rxdesc :%d not process\n",
 643                                   desc_name);
 644                         break;
 645                 }
 646         }
 647         return ret;
 648 }
 649
 650 void rtl92se_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
 651 {
 652         struct rtl_priv *rtlpriv = rtl_priv(hw);
 653         rtl_write_word(rtlpriv, TP_POLL, BIT(0) << (hw_queue));
 654 }