drivers/net/wireless/rtlwifi/rtl8192cu/trx.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2010  Realtek Corporation. All rights reserved.
   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 "../usb.h"
  32 #include "../ps.h"
  33 #include "../base.h"
  34 #include "reg.h"
  35 #include "def.h"
  36 #include "phy.h"
  37 #include "rf.h"
  38 #include "dm.h"
  39 #include "mac.h"
  40 #include "trx.h"
  41
  42 static int _ConfigVerTOutEP(struct ieee80211_hw *hw)
  43 {
  44         u8 ep_cfg, txqsele;
  45         u8 ep_nums = 0;
  46
  47         struct rtl_priv *rtlpriv = rtl_priv(hw);
  48         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  49         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  50
  51         rtlusb->out_queue_sel = 0;
  52         ep_cfg = rtl_read_byte(rtlpriv, REG_TEST_SIE_OPTIONAL);
  53         ep_cfg = (ep_cfg & USB_TEST_EP_MASK) >> USB_TEST_EP_SHIFT;
  54         switch (ep_cfg) {
  55         case 0:         /* 2 bulk OUT, 1 bulk IN */
  56         case 3:
  57                 rtlusb->out_queue_sel  = TX_SELE_HQ | TX_SELE_LQ;
  58                 ep_nums = 2;
  59                 break;
  60         case 1: /* 1 bulk IN/OUT => map all endpoint to Low queue */
  61         case 2: /* 1 bulk IN, 1 bulk OUT => map all endpoint to High queue */
  62                 txqsele = rtl_read_byte(rtlpriv, REG_TEST_USB_TXQS);
  63                 if (txqsele & 0x0F) /* /map all endpoint to High queue */
  64                         rtlusb->out_queue_sel =  TX_SELE_HQ;
  65                 else if (txqsele&0xF0) /* map all endpoint to Low queue */
  66                         rtlusb->out_queue_sel =  TX_SELE_LQ;
  67                 ep_nums = 1;
  68                 break;
  69         default:
  70                 break;
  71         }
  72         return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
  73 }
  74
  75 static int _ConfigVerNOutEP(struct ieee80211_hw *hw)
  76 {
  77         u8 ep_cfg;
  78         u8 ep_nums = 0;
  79
  80         struct rtl_priv *rtlpriv = rtl_priv(hw);
  81         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  82         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  83
  84         rtlusb->out_queue_sel = 0;
  85         /* Normal and High queue */
  86         ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 1));
  87         if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  88                 rtlusb->out_queue_sel |= TX_SELE_HQ;
  89                 ep_nums++;
  90         }
  91         if ((ep_cfg >> USB_NORMAL_SIE_EP_SHIFT) & USB_NORMAL_SIE_EP_MASK) {
  92                 rtlusb->out_queue_sel |= TX_SELE_NQ;
  93                 ep_nums++;
  94         }
  95         /* Low queue */
  96         ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 2));
  97         if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  98                 rtlusb->out_queue_sel |= TX_SELE_LQ;
  99                 ep_nums++;
 100         }
 101         return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
 102 }
 103
 104 static void _TwoOutEpMapping(struct ieee80211_hw *hw, bool bIsChipB,
 105                              bool  bwificfg, struct rtl_ep_map *ep_map)
 106 {
 107         struct rtl_priv *rtlpriv = rtl_priv(hw);
 108
 109         if (bwificfg) { /* for WMM */
 110                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 111                          ("USB Chip-B & WMM Setting.....\n"));
 112                 ep_map->ep_mapping[RTL_TXQ_BE]  = 2;
 113                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
 114                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
 115                 ep_map->ep_mapping[RTL_TXQ_VO] = 2;
 116                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 117                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 118                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 119         } else { /* typical setting */
 120                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 121                          ("USB typical Setting.....\n"));
 122                 ep_map->ep_mapping[RTL_TXQ_BE]  = 3;
 123                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
 124                 ep_map->ep_mapping[RTL_TXQ_VI]  = 2;
 125                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 126                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 127                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 128                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 129         }
 130 }
 131
 132 static void _ThreeOutEpMapping(struct ieee80211_hw *hw, bool  bwificfg,
 133                                struct rtl_ep_map *ep_map)
 134 {
 135         struct rtl_priv *rtlpriv = rtl_priv(hw);
 136         if (bwificfg) { /* for WMM */
 137                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 138                          ("USB 3EP Setting for WMM.....\n"));
 139                 ep_map->ep_mapping[RTL_TXQ_BE]  = 5;
 140                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
 141                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
 142                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 143                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 144                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 145                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 146         } else { /* typical setting */
 147                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 148                          ("USB 3EP Setting for typical.....\n"));
 149                 ep_map->ep_mapping[RTL_TXQ_BE]  = 5;
 150                 ep_map->ep_mapping[RTL_TXQ_BK]  = 5;
 151                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
 152                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 153                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 154                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 155                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 156         }
 157 }
 158
 159 static void _OneOutEpMapping(struct ieee80211_hw *hw, struct rtl_ep_map *ep_map)
 160 {
 161         ep_map->ep_mapping[RTL_TXQ_BE]  = 2;
 162         ep_map->ep_mapping[RTL_TXQ_BK]  = 2;
 163         ep_map->ep_mapping[RTL_TXQ_VI]  = 2;
 164         ep_map->ep_mapping[RTL_TXQ_VO] = 2;
 165         ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 166         ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 167         ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 168 }
 169 static int _out_ep_mapping(struct ieee80211_hw *hw)
 170 {
 171         int err = 0;
 172         bool bIsChipN, bwificfg = false;
 173         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 174         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
 175         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
 176         struct rtl_ep_map *ep_map = &(rtlusb->ep_map);
 177
 178         bIsChipN = IS_NORMAL_CHIP(rtlhal->version);
 179         switch (rtlusb->out_ep_nums) {
 180         case 2:
 181                 _TwoOutEpMapping(hw, bIsChipN, bwificfg, ep_map);
 182                 break;
 183         case 3:
 184                 /* Test chip doesn't support three out EPs. */
 185                 if (!bIsChipN) {
 186                         err  =  -EINVAL;
 187                         goto err_out;
 188                 }
 189                 _ThreeOutEpMapping(hw, bIsChipN, ep_map);
 190                 break;
 191         case 1:
 192                 _OneOutEpMapping(hw, ep_map);
 193                 break;
 194         default:
 195                 err  =  -EINVAL;
 196                 break;
 197         }
 198 err_out:
 199         return err;
 200
 201 }
 202 /* endpoint mapping */
 203 int  rtl8192cu_endpoint_mapping(struct ieee80211_hw *hw)
 204 {
 205         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 206         int error = 0;
 207         if (likely(IS_NORMAL_CHIP(rtlhal->version)))
 208                 error = _ConfigVerNOutEP(hw);
 209         else
 210                 error = _ConfigVerTOutEP(hw);
 211         if (error)
 212                 goto err_out;
 213         error = _out_ep_mapping(hw);
 214         if (error)
 215                 goto err_out;
 216 err_out:
 217         return error;
 218 }
 219
 220 u16 rtl8192cu_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
 221 {
 222         u16 hw_queue_index;
 223
 224         if (unlikely(ieee80211_is_beacon(fc))) {
 225                 hw_queue_index = RTL_TXQ_BCN;
 226                 goto out;
 227         }
 228         if (ieee80211_is_mgmt(fc)) {
 229                 hw_queue_index = RTL_TXQ_MGT;
 230                 goto out;
 231         }
 232         switch (mac80211_queue_index) {
 233         case 0:
 234                 hw_queue_index = RTL_TXQ_VO;
 235                 break;
 236         case 1:
 237                 hw_queue_index = RTL_TXQ_VI;
 238                 break;
 239         case 2:
 240                 hw_queue_index = RTL_TXQ_BE;
 241                 break;
 242         case 3:
 243                 hw_queue_index = RTL_TXQ_BK;
 244                 break;
 245         default:
 246                 hw_queue_index = RTL_TXQ_BE;
 247                 RT_ASSERT(false, ("QSLT_BE queue, skb_queue:%d\n",
 248                           mac80211_queue_index));
 249                 break;
 250         }
 251 out:
 252         return hw_queue_index;
 253 }
 254
 255 static enum rtl_desc_qsel _rtl8192cu_mq_to_descq(struct ieee80211_hw *hw,
 256                                          __le16 fc, u16 mac80211_queue_index)
 257 {
 258         enum rtl_desc_qsel qsel;
 259         struct rtl_priv *rtlpriv = rtl_priv(hw);
 260
 261         if (unlikely(ieee80211_is_beacon(fc))) {
 262                 qsel = QSLT_BEACON;
 263                 goto out;
 264         }
 265         if (ieee80211_is_mgmt(fc)) {
 266                 qsel = QSLT_MGNT;
 267                 goto out;
 268         }
 269         switch (mac80211_queue_index) {
 270         case 0: /* VO */
 271                 qsel = QSLT_VO;
 272                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 273                          ("VO queue, set qsel = 0x%x\n", QSLT_VO));
 274                 break;
 275         case 1: /* VI */
 276                 qsel = QSLT_VI;
 277                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 278                          ("VI queue, set qsel = 0x%x\n", QSLT_VI));
 279                 break;
 280         case 3: /* BK */
 281                 qsel = QSLT_BK;
 282                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 283                          ("BK queue, set qsel = 0x%x\n", QSLT_BK));
 284                 break;
 285         case 2: /* BE */
 286         default:
 287                 qsel = QSLT_BE;
 288                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 289                          ("BE queue, set qsel = 0x%x\n", QSLT_BE));
 290                 break;
 291         }
 292 out:
 293         return qsel;
 294 }
 295
 296 /* =============================================================== */
 297
 298 /*----------------------------------------------------------------------
 299  *
 300  *      Rx handler
 301  *
 302  *---------------------------------------------------------------------- */
 303 bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
 304                            struct rtl_stats *stats,
 305                            struct ieee80211_rx_status *rx_status,
 306                            u8 *p_desc, struct sk_buff *skb)
 307 {
 308         struct rx_fwinfo_92c *p_drvinfo;
 309         struct rx_desc_92c *pdesc = (struct rx_desc_92c *)p_desc;
 310         u32 phystatus = GET_RX_DESC_PHY_STATUS(pdesc);
 311
 312         stats->length = (u16) GET_RX_DESC_PKT_LEN(pdesc);
 313         stats->rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(pdesc) *
 314                                  RX_DRV_INFO_SIZE_UNIT;
 315         stats->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03);
 316         stats->icv = (u16) GET_RX_DESC_ICV(pdesc);
 317         stats->crc = (u16) GET_RX_DESC_CRC32(pdesc);
 318         stats->hwerror = (stats->crc | stats->icv);
 319         stats->decrypted = !GET_RX_DESC_SWDEC(pdesc);
 320         stats->rate = (u8) GET_RX_DESC_RX_MCS(pdesc);
 321         stats->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc);
 322         stats->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1);
 323         stats->isampdu = (bool) ((GET_RX_DESC_PAGGR(pdesc) == 1)
 324                                    && (GET_RX_DESC_FAGGR(pdesc) == 1));
 325         stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
 326         stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
 327         rx_status->freq = hw->conf.channel->center_freq;
 328         rx_status->band = hw->conf.channel->band;
 329         if (GET_RX_DESC_CRC32(pdesc))
 330                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 331         if (!GET_RX_DESC_SWDEC(pdesc))
 332                 rx_status->flag |= RX_FLAG_DECRYPTED;
 333         if (GET_RX_DESC_BW(pdesc))
 334                 rx_status->flag |= RX_FLAG_40MHZ;
 335         if (GET_RX_DESC_RX_HT(pdesc))
 336                 rx_status->flag |= RX_FLAG_HT;
 337         rx_status->flag |= RX_FLAG_MACTIME_MPDU;
 338         if (stats->decrypted)
 339                 rx_status->flag |= RX_FLAG_DECRYPTED;
 340         rx_status->rate_idx = _rtl92c_rate_mapping(hw,
 341                                                 (bool)GET_RX_DESC_RX_HT(pdesc),
 342                                                 (u8)GET_RX_DESC_RX_MCS(pdesc),
 343                                                 (bool)GET_RX_DESC_PAGGR(pdesc));
 344         rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
 345         if (phystatus) {
 346                 p_drvinfo = (struct rx_fwinfo_92c *)(pdesc + RTL_RX_DESC_SIZE);
 347                 rtl92c_translate_rx_signal_stuff(hw, skb, stats, pdesc,
 348                                                  p_drvinfo);
 349         }
 350         /*rx_status->qual = stats->signal; */
 351         rx_status->signal = stats->rssi + 10;
 352         /*rx_status->noise = -stats->noise; */
 353         return true;
 354 }
 355
 356 #define RTL_RX_DRV_INFO_UNIT            8
 357
 358 static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
 359 {
 360         struct ieee80211_rx_status *rx_status =
 361                  (struct ieee80211_rx_status *)IEEE80211_SKB_RXCB(skb);
 362         u32 skb_len, pkt_len, drvinfo_len;
 363         struct rtl_priv *rtlpriv = rtl_priv(hw);
 364         u8 *rxdesc;
 365         struct rtl_stats stats = {
 366                 .signal = 0,
 367                 .noise = -98,
 368                 .rate = 0,
 369         };
 370         struct rx_fwinfo_92c *p_drvinfo;
 371         bool bv;
 372         __le16 fc;
 373         struct ieee80211_hdr *hdr;
 374
 375         memset(rx_status, 0, sizeof(*rx_status));
 376         rxdesc  = skb->data;
 377         skb_len = skb->len;
 378         drvinfo_len = (GET_RX_DESC_DRVINFO_SIZE(rxdesc) * RTL_RX_DRV_INFO_UNIT);
 379         pkt_len         = GET_RX_DESC_PKT_LEN(rxdesc);
 380         /* TODO: Error recovery. drop this skb or something. */
 381         WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
 382         stats.length = (u16) GET_RX_DESC_PKT_LEN(rxdesc);
 383         stats.rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(rxdesc) *
 384                                 RX_DRV_INFO_SIZE_UNIT;
 385         stats.rx_bufshift = (u8) (GET_RX_DESC_SHIFT(rxdesc) & 0x03);
 386         stats.icv = (u16) GET_RX_DESC_ICV(rxdesc);
 387         stats.crc = (u16) GET_RX_DESC_CRC32(rxdesc);
 388         stats.hwerror = (stats.crc | stats.icv);
 389         stats.decrypted = !GET_RX_DESC_SWDEC(rxdesc);
 390         stats.rate = (u8) GET_RX_DESC_RX_MCS(rxdesc);
 391         stats.shortpreamble = (u16) GET_RX_DESC_SPLCP(rxdesc);
 392         stats.isampdu = (bool) ((GET_RX_DESC_PAGGR(rxdesc) == 1)
 393                                    && (GET_RX_DESC_FAGGR(rxdesc) == 1));
 394         stats.timestamp_low = GET_RX_DESC_TSFL(rxdesc);
 395         stats.rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(rxdesc);
 396         /* TODO: is center_freq changed when doing scan? */
 397         /* TODO: Shall we add protection or just skip those two step? */
 398         rx_status->freq = hw->conf.channel->center_freq;
 399         rx_status->band = hw->conf.channel->band;
 400         if (GET_RX_DESC_CRC32(rxdesc))
 401                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 402         if (!GET_RX_DESC_SWDEC(rxdesc))
 403                 rx_status->flag |= RX_FLAG_DECRYPTED;
 404         if (GET_RX_DESC_BW(rxdesc))
 405                 rx_status->flag |= RX_FLAG_40MHZ;
 406         if (GET_RX_DESC_RX_HT(rxdesc))
 407                 rx_status->flag |= RX_FLAG_HT;
 408         /* Data rate */
 409         rx_status->rate_idx = _rtl92c_rate_mapping(hw,
 410                                                 (bool)GET_RX_DESC_RX_HT(rxdesc),
 411                                                 (u8)GET_RX_DESC_RX_MCS(rxdesc),
 412                                                 (bool)GET_RX_DESC_PAGGR(rxdesc)
 413                                                 );
 414         /*  There is a phy status after this rx descriptor. */
 415         if (GET_RX_DESC_PHY_STATUS(rxdesc)) {
 416                 p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
 417                 rtl92c_translate_rx_signal_stuff(hw, skb, &stats,
 418                                  (struct rx_desc_92c *)rxdesc, p_drvinfo);
 419         }
 420         skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
 421         hdr = (struct ieee80211_hdr *)(skb->data);
 422         fc = hdr->frame_control;
 423         bv = ieee80211_is_probe_resp(fc);
 424         if (bv)
 425                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 426                          ("Got probe response frame.\n"));
 427         if (ieee80211_is_beacon(fc))
 428                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 429                          ("Got beacon frame.\n"));
 430         if (ieee80211_is_data(fc))
 431                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("Got data frame.\n"));
 432         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 433                  ("Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:"
 434                  "0x%02X\n", fc, (u32)hdr->addr1[0], (u32)hdr->addr1[1],
 435                  (u32)hdr->addr1[2], (u32)hdr->addr1[3], (u32)hdr->addr1[4],
 436                  (u32)hdr->addr1[5]));
 437         memcpy(IEEE80211_SKB_RXCB(skb), rx_status, sizeof(*rx_status));
 438         ieee80211_rx_irqsafe(hw, skb);
 439 }
 440
 441 void  rtl8192cu_rx_hdl(struct ieee80211_hw *hw, struct sk_buff * skb)
 442 {
 443         _rtl_rx_process(hw, skb);
 444 }
 445
 446 void rtl8192c_rx_segregate_hdl(
 447         struct ieee80211_hw *hw,
 448         struct sk_buff *skb,
 449         struct sk_buff_head *skb_list)
 450 {
 451 }
 452
 453 /*----------------------------------------------------------------------
 454  *
 455  *      Tx handler
 456  *
 457  *---------------------------------------------------------------------- */
 458 void rtl8192c_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb)
 459 {
 460 }
 461
 462 int rtl8192c_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
 463                          struct sk_buff *skb)
 464 {
 465         return 0;
 466 }
 467
 468 struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *hw,
 469                                            struct sk_buff_head *list)
 470 {
 471         return skb_dequeue(list);
 472 }
 473
 474 /*======================================== trx ===============================*/
 475
 476 static void _rtl_fill_usb_tx_desc(u8 *txdesc)
 477 {
 478         SET_TX_DESC_OWN(txdesc, 1);
 479         SET_TX_DESC_LAST_SEG(txdesc, 1);
 480         SET_TX_DESC_FIRST_SEG(txdesc, 1);
 481 }
 482 /**
 483  *      For HW recovery information
 484  */
 485 static void _rtl_tx_desc_checksum(u8 *txdesc)
 486 {
 487         u16 *ptr = (u16 *)txdesc;
 488         u16     checksum = 0;
 489         u32 index;
 490
 491         /* Clear first */
 492         SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, 0);
 493         for (index = 0; index < 16; index++)
 494                 checksum = checksum ^ (*(ptr + index));
 495         SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, checksum);
 496 }
 497
 498 void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
 499                           struct ieee80211_hdr *hdr, u8 *pdesc_tx,
 500                           struct ieee80211_tx_info *info, struct sk_buff *skb,
 501                           u8 queue_index,
 502                           struct rtl_tcb_desc *tcb_desc)
 503 {
 504         struct rtl_priv *rtlpriv = rtl_priv(hw);
 505         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 506         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 507         bool defaultadapter = true;
 508         struct ieee80211_sta *sta = info->control.sta = info->control.sta;
 509         u8 *qc = ieee80211_get_qos_ctl(hdr);
 510         u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 511         u16 seq_number;
 512         __le16 fc = hdr->frame_control;
 513         u8 rate_flag = info->control.rates[0].flags;
 514         u16 pktlen = skb->len;
 515         enum rtl_desc_qsel fw_qsel = _rtl8192cu_mq_to_descq(hw, fc,
 516                                                 skb_get_queue_mapping(skb));
 517         u8 *txdesc;
 518
 519         seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 520         rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
 521         txdesc = (u8 *)skb_push(skb, RTL_TX_HEADER_SIZE);
 522         memset(txdesc, 0, RTL_TX_HEADER_SIZE);
 523         SET_TX_DESC_PKT_SIZE(txdesc, pktlen);
 524         SET_TX_DESC_LINIP(txdesc, 0);
 525         SET_TX_DESC_PKT_OFFSET(txdesc, RTL_DUMMY_OFFSET);
 526         SET_TX_DESC_OFFSET(txdesc, RTL_TX_HEADER_SIZE);
 527         SET_TX_DESC_TX_RATE(txdesc, tcb_desc->hw_rate);
 528         if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
 529                 SET_TX_DESC_DATA_SHORTGI(txdesc, 1);
 530         if (mac->tids[tid].agg.agg_state == RTL_AGG_ON &&
 531                     info->flags & IEEE80211_TX_CTL_AMPDU) {
 532                 SET_TX_DESC_AGG_ENABLE(txdesc, 1);
 533                 SET_TX_DESC_MAX_AGG_NUM(txdesc, 0x14);
 534         } else {
 535                 SET_TX_DESC_AGG_BREAK(txdesc, 1);
 536         }
 537         SET_TX_DESC_SEQ(txdesc, seq_number);
 538         SET_TX_DESC_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable &&
 539                                !tcb_desc->cts_enable) ? 1 : 0));
 540         SET_TX_DESC_HW_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable ||
 541                                   tcb_desc->cts_enable) ? 1 : 0));
 542         SET_TX_DESC_CTS2SELF(txdesc, ((tcb_desc->cts_enable) ? 1 : 0));
 543         SET_TX_DESC_RTS_STBC(txdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
 544         SET_TX_DESC_RTS_RATE(txdesc, tcb_desc->rts_rate);
 545         SET_TX_DESC_RTS_BW(txdesc, 0);
 546         SET_TX_DESC_RTS_SC(txdesc, tcb_desc->rts_sc);
 547         SET_TX_DESC_RTS_SHORT(txdesc,
 548                               ((tcb_desc->rts_rate <= DESC92C_RATE54M) ?
 549                                (tcb_desc->rts_use_shortpreamble ? 1 : 0)
 550                                : (tcb_desc->rts_use_shortgi ? 1 : 0)));
 551         if (mac->bw_40) {
 552                 if (tcb_desc->packet_bw) {
 553                         SET_TX_DESC_DATA_BW(txdesc, 1);
 554                         SET_TX_DESC_DATA_SC(txdesc, 3);
 555                 } else {
 556                         SET_TX_DESC_DATA_BW(txdesc, 0);
 557                                 if (rate_flag & IEEE80211_TX_RC_DUP_DATA)
 558                                         SET_TX_DESC_DATA_SC(txdesc,
 559                                                           mac->cur_40_prime_sc);
 560                         }
 561         } else {
 562                 SET_TX_DESC_DATA_BW(txdesc, 0);
 563                 SET_TX_DESC_DATA_SC(txdesc, 0);
 564         }
 565         rcu_read_lock();
 566         sta = ieee80211_find_sta(mac->vif, mac->bssid);
 567         if (sta) {
 568                 u8 ampdu_density = sta->ht_cap.ampdu_density;
 569                 SET_TX_DESC_AMPDU_DENSITY(txdesc, ampdu_density);
 570         }
 571         rcu_read_unlock();
 572         if (info->control.hw_key) {
 573                 struct ieee80211_key_conf *keyconf = info->control.hw_key;
 574                 switch (keyconf->cipher) {
 575                 case WLAN_CIPHER_SUITE_WEP40:
 576                 case WLAN_CIPHER_SUITE_WEP104:
 577                 case WLAN_CIPHER_SUITE_TKIP:
 578                         SET_TX_DESC_SEC_TYPE(txdesc, 0x1);
 579                         break;
 580                 case WLAN_CIPHER_SUITE_CCMP:
 581                         SET_TX_DESC_SEC_TYPE(txdesc, 0x3);
 582                         break;
 583                 default:
 584                         SET_TX_DESC_SEC_TYPE(txdesc, 0x0);
 585                         break;
 586                 }
 587         }
 588         SET_TX_DESC_PKT_ID(txdesc, 0);
 589         SET_TX_DESC_QUEUE_SEL(txdesc, fw_qsel);
 590         SET_TX_DESC_DATA_RATE_FB_LIMIT(txdesc, 0x1F);
 591         SET_TX_DESC_RTS_RATE_FB_LIMIT(txdesc, 0xF);
 592         SET_TX_DESC_DISABLE_FB(txdesc, 0);
 593         SET_TX_DESC_USE_RATE(txdesc, tcb_desc->use_driver_rate ? 1 : 0);
 594         if (ieee80211_is_data_qos(fc)) {
 595                 if (mac->rdg_en) {
 596                         RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 597                                  ("Enable RDG function.\n"));
 598                         SET_TX_DESC_RDG_ENABLE(txdesc, 1);
 599                         SET_TX_DESC_HTC(txdesc, 1);
 600                 }
 601         }
 602         if (rtlpriv->dm.useramask) {
 603                 SET_TX_DESC_RATE_ID(txdesc, tcb_desc->ratr_index);
 604                 SET_TX_DESC_MACID(txdesc, tcb_desc->mac_id);
 605         } else {
 606                 SET_TX_DESC_RATE_ID(txdesc, 0xC + tcb_desc->ratr_index);
 607                 SET_TX_DESC_MACID(txdesc, tcb_desc->ratr_index);
 608         }
 609         if ((!ieee80211_is_data_qos(fc)) && ppsc->leisure_ps &&
 610               ppsc->fwctrl_lps) {
 611                 SET_TX_DESC_HWSEQ_EN(txdesc, 1);
 612                 SET_TX_DESC_PKT_ID(txdesc, 8);
 613                 if (!defaultadapter)
 614                         SET_TX_DESC_QOS(txdesc, 1);
 615         }
 616         if (ieee80211_has_morefrags(fc))
 617                 SET_TX_DESC_MORE_FRAG(txdesc, 1);
 618         if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
 619             is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 620                 SET_TX_DESC_BMC(txdesc, 1);
 621         _rtl_fill_usb_tx_desc(txdesc);
 622         _rtl_tx_desc_checksum(txdesc);
 623         RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, (" %s ==>\n", __func__));
 624 }
 625
 626 void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 * pDesc,
 627                               u32 buffer_len, bool bIsPsPoll)
 628 {
 629         /* Clear all status */
 630         memset(pDesc, 0, RTL_TX_HEADER_SIZE);
 631         SET_TX_DESC_FIRST_SEG(pDesc, 1); /* bFirstSeg; */
 632         SET_TX_DESC_LAST_SEG(pDesc, 1); /* bLastSeg; */
 633         SET_TX_DESC_OFFSET(pDesc, RTL_TX_HEADER_SIZE); /* Offset = 32 */
 634         SET_TX_DESC_PKT_SIZE(pDesc, buffer_len); /* Buffer size + command hdr */
 635         SET_TX_DESC_QUEUE_SEL(pDesc, QSLT_MGNT); /* Fixed queue of Mgnt queue */
 636         /* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error
 637          * vlaue by Hw. */
 638         if (bIsPsPoll) {
 639                 SET_TX_DESC_NAV_USE_HDR(pDesc, 1);
 640         } else {
 641                 SET_TX_DESC_HWSEQ_EN(pDesc, 1); /* Hw set sequence number */
 642                 SET_TX_DESC_PKT_ID(pDesc, 0x100); /* set bit3 to 1. */
 643         }
 644         SET_TX_DESC_USE_RATE(pDesc, 1); /* use data rate which is set by Sw */
 645         SET_TX_DESC_OWN(pDesc, 1);
 646         SET_TX_DESC_TX_RATE(pDesc, DESC92C_RATE1M);
 647         _rtl_tx_desc_checksum(pDesc);
 648 }
 649
 650 void rtl92cu_tx_fill_cmddesc(struct ieee80211_hw *hw,
 651                              u8 *pdesc, bool firstseg,
 652                              bool lastseg, struct sk_buff *skb)
 653 {
 654         struct rtl_priv *rtlpriv = rtl_priv(hw);
 655         u8 fw_queue = QSLT_BEACON;
 656         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
 657         __le16 fc = hdr->frame_control;
 658
 659         memset((void *)pdesc, 0, RTL_TX_HEADER_SIZE);
 660         if (firstseg)
 661                 SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE);
 662         SET_TX_DESC_TX_RATE(pdesc, DESC92C_RATE1M);
 663         SET_TX_DESC_SEQ(pdesc, 0);
 664         SET_TX_DESC_LINIP(pdesc, 0);
 665         SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
 666         SET_TX_DESC_FIRST_SEG(pdesc, 1);
 667         SET_TX_DESC_LAST_SEG(pdesc, 1);
 668         SET_TX_DESC_RATE_ID(pdesc, 7);
 669         SET_TX_DESC_MACID(pdesc, 0);
 670         SET_TX_DESC_OWN(pdesc, 1);
 671         SET_TX_DESC_PKT_SIZE((u8 *) pdesc, (u16) (skb->len));
 672         SET_TX_DESC_FIRST_SEG(pdesc, 1);
 673         SET_TX_DESC_LAST_SEG(pdesc, 1);
 674         SET_TX_DESC_OFFSET(pdesc, 0x20);
 675         SET_TX_DESC_USE_RATE(pdesc, 1);
 676         if (!ieee80211_is_data_qos(fc)) {
 677                 SET_TX_DESC_HWSEQ_EN(pdesc, 1);
 678                 SET_TX_DESC_PKT_ID(pdesc, 8);
 679         }
 680         RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD, "H2C Tx Cmd Content\n",
 681                       pdesc, RTL_TX_DESC_SIZE);
 682 }
 683
 684 bool rtl92cu_cmd_send_packet(struct ieee80211_hw *hw, struct sk_buff *skb)
 685 {
 686         return true;
 687 }