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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
   3
   4 #include "../wifi.h"
   5 #include "../usb.h"
   6 #include "../ps.h"
   7 #include "../base.h"
   8 #include "reg.h"
   9 #include "def.h"
  10 #include "phy.h"
  11 #include "rf.h"
  12 #include "dm.h"
  13 #include "mac.h"
  14 #include "trx.h"
  15 #include "../rtl8192c/fw_common.h"
  16
  17 static int configvertoutep(struct ieee80211_hw *hw)
  18 {
  19         u8 ep_cfg, txqsele;
  20         u8 ep_nums = 0;
  21
  22         struct rtl_priv *rtlpriv = rtl_priv(hw);
  23         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  24         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  25
  26         rtlusb->out_queue_sel = 0;
  27         ep_cfg = rtl_read_byte(rtlpriv, REG_TEST_SIE_OPTIONAL);
  28         ep_cfg = (ep_cfg & USB_TEST_EP_MASK) >> USB_TEST_EP_SHIFT;
  29         switch (ep_cfg) {
  30         case 0:         /* 2 bulk OUT, 1 bulk IN */
  31         case 3:
  32                 rtlusb->out_queue_sel  = TX_SELE_HQ | TX_SELE_LQ;
  33                 ep_nums = 2;
  34                 break;
  35         case 1: /* 1 bulk IN/OUT => map all endpoint to Low queue */
  36         case 2: /* 1 bulk IN, 1 bulk OUT => map all endpoint to High queue */
  37                 txqsele = rtl_read_byte(rtlpriv, REG_TEST_USB_TXQS);
  38                 if (txqsele & 0x0F) /* /map all endpoint to High queue */
  39                         rtlusb->out_queue_sel =  TX_SELE_HQ;
  40                 else if (txqsele&0xF0) /* map all endpoint to Low queue */
  41                         rtlusb->out_queue_sel =  TX_SELE_LQ;
  42                 ep_nums = 1;
  43                 break;
  44         default:
  45                 break;
  46         }
  47         return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
  48 }
  49
  50 static int configvernoutep(struct ieee80211_hw *hw)
  51 {
  52         u8 ep_cfg;
  53         u8 ep_nums = 0;
  54
  55         struct rtl_priv *rtlpriv = rtl_priv(hw);
  56         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
  57         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
  58
  59         rtlusb->out_queue_sel = 0;
  60         /* Normal and High queue */
  61         ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 1));
  62         if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  63                 rtlusb->out_queue_sel |= TX_SELE_HQ;
  64                 ep_nums++;
  65         }
  66         if ((ep_cfg >> USB_NORMAL_SIE_EP_SHIFT) & USB_NORMAL_SIE_EP_MASK) {
  67                 rtlusb->out_queue_sel |= TX_SELE_NQ;
  68                 ep_nums++;
  69         }
  70         /* Low queue */
  71         ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 2));
  72         if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
  73                 rtlusb->out_queue_sel |= TX_SELE_LQ;
  74                 ep_nums++;
  75         }
  76         return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
  77 }
  78
  79 static void twooutepmapping(struct ieee80211_hw *hw, bool is_chip8,
  80                              bool  bwificfg, struct rtl_ep_map *ep_map)
  81 {
  82         struct rtl_priv *rtlpriv = rtl_priv(hw);
  83
  84         if (bwificfg) { /* for WMM */
  85                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  86                          "USB Chip-B & WMM Setting.....\n");
  87                 ep_map->ep_mapping[RTL_TXQ_BE]  = 2;
  88                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
  89                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
  90                 ep_map->ep_mapping[RTL_TXQ_VO] = 2;
  91                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
  92                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
  93                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
  94         } else { /* typical setting */
  95                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
  96                          "USB typical Setting.....\n");
  97                 ep_map->ep_mapping[RTL_TXQ_BE]  = 3;
  98                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
  99                 ep_map->ep_mapping[RTL_TXQ_VI]  = 2;
 100                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 101                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 102                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 103                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 104         }
 105 }
 106
 107 static void threeoutepmapping(struct ieee80211_hw *hw, bool  bwificfg,
 108                                struct rtl_ep_map *ep_map)
 109 {
 110         struct rtl_priv *rtlpriv = rtl_priv(hw);
 111
 112         if (bwificfg) { /* for WMM */
 113                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 114                          "USB 3EP Setting for WMM.....\n");
 115                 ep_map->ep_mapping[RTL_TXQ_BE]  = 5;
 116                 ep_map->ep_mapping[RTL_TXQ_BK]  = 3;
 117                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
 118                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 119                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 120                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 121                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 122         } else { /* typical setting */
 123                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 124                          "USB 3EP Setting for typical.....\n");
 125                 ep_map->ep_mapping[RTL_TXQ_BE]  = 5;
 126                 ep_map->ep_mapping[RTL_TXQ_BK]  = 5;
 127                 ep_map->ep_mapping[RTL_TXQ_VI]  = 3;
 128                 ep_map->ep_mapping[RTL_TXQ_VO]  = 2;
 129                 ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 130                 ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 131                 ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 132         }
 133 }
 134
 135 static void oneoutepmapping(struct ieee80211_hw *hw, struct rtl_ep_map *ep_map)
 136 {
 137         ep_map->ep_mapping[RTL_TXQ_BE]  = 2;
 138         ep_map->ep_mapping[RTL_TXQ_BK]  = 2;
 139         ep_map->ep_mapping[RTL_TXQ_VI]  = 2;
 140         ep_map->ep_mapping[RTL_TXQ_VO] = 2;
 141         ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
 142         ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
 143         ep_map->ep_mapping[RTL_TXQ_HI]  = 2;
 144 }
 145
 146 static int _out_ep_mapping(struct ieee80211_hw *hw)
 147 {
 148         int err = 0;
 149         bool ischipn, bwificfg = false;
 150         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 151         struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
 152         struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
 153         struct rtl_ep_map *ep_map = &(rtlusb->ep_map);
 154
 155         ischipn = IS_NORMAL_CHIP(rtlhal->version);
 156         switch (rtlusb->out_ep_nums) {
 157         case 2:
 158                 twooutepmapping(hw, ischipn, bwificfg, ep_map);
 159                 break;
 160         case 3:
 161                 /* Test chip doesn't support three out EPs. */
 162                 if (!ischipn) {
 163                         err  =  -EINVAL;
 164                         goto err_out;
 165                 }
 166                 threeoutepmapping(hw, ischipn, ep_map);
 167                 break;
 168         case 1:
 169                 oneoutepmapping(hw, ep_map);
 170                 break;
 171         default:
 172                 err  =  -EINVAL;
 173                 break;
 174         }
 175 err_out:
 176         return err;
 177
 178 }
 179
 180 /* endpoint mapping */
 181 int  rtl8192cu_endpoint_mapping(struct ieee80211_hw *hw)
 182 {
 183         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 184         int error = 0;
 185
 186         if (likely(IS_NORMAL_CHIP(rtlhal->version)))
 187                 error = configvernoutep(hw);
 188         else
 189                 error = configvertoutep(hw);
 190         if (error)
 191                 goto err_out;
 192         error = _out_ep_mapping(hw);
 193         if (error)
 194                 goto err_out;
 195 err_out:
 196         return error;
 197 }
 198
 199 u16 rtl8192cu_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
 200 {
 201         u16 hw_queue_index;
 202
 203         if (unlikely(ieee80211_is_beacon(fc))) {
 204                 hw_queue_index = RTL_TXQ_BCN;
 205                 goto out;
 206         }
 207         if (ieee80211_is_mgmt(fc)) {
 208                 hw_queue_index = RTL_TXQ_MGT;
 209                 goto out;
 210         }
 211         switch (mac80211_queue_index) {
 212         case 0:
 213                 hw_queue_index = RTL_TXQ_VO;
 214                 break;
 215         case 1:
 216                 hw_queue_index = RTL_TXQ_VI;
 217                 break;
 218         case 2:
 219                 hw_queue_index = RTL_TXQ_BE;
 220                 break;
 221         case 3:
 222                 hw_queue_index = RTL_TXQ_BK;
 223                 break;
 224         default:
 225                 hw_queue_index = RTL_TXQ_BE;
 226                 WARN_ONCE(true, "rtl8192cu: QSLT_BE queue, skb_queue:%d\n",
 227                           mac80211_queue_index);
 228                 break;
 229         }
 230 out:
 231         return hw_queue_index;
 232 }
 233
 234 static enum rtl_desc_qsel _rtl8192cu_mq_to_descq(struct ieee80211_hw *hw,
 235                                          __le16 fc, u16 mac80211_queue_index)
 236 {
 237         enum rtl_desc_qsel qsel;
 238         struct rtl_priv *rtlpriv = rtl_priv(hw);
 239
 240         if (unlikely(ieee80211_is_beacon(fc))) {
 241                 qsel = QSLT_BEACON;
 242                 goto out;
 243         }
 244         if (ieee80211_is_mgmt(fc)) {
 245                 qsel = QSLT_MGNT;
 246                 goto out;
 247         }
 248         switch (mac80211_queue_index) {
 249         case 0: /* VO */
 250                 qsel = QSLT_VO;
 251                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 252                          "VO queue, set qsel = 0x%x\n", QSLT_VO);
 253                 break;
 254         case 1: /* VI */
 255                 qsel = QSLT_VI;
 256                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 257                          "VI queue, set qsel = 0x%x\n", QSLT_VI);
 258                 break;
 259         case 3: /* BK */
 260                 qsel = QSLT_BK;
 261                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 262                          "BK queue, set qsel = 0x%x\n", QSLT_BK);
 263                 break;
 264         case 2: /* BE */
 265         default:
 266                 qsel = QSLT_BE;
 267                 RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
 268                          "BE queue, set qsel = 0x%x\n", QSLT_BE);
 269                 break;
 270         }
 271 out:
 272         return qsel;
 273 }
 274
 275 /* =============================================================== */
 276
 277 /*----------------------------------------------------------------------
 278  *
 279  *      Rx handler
 280  *
 281  *---------------------------------------------------------------------- */
 282 bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
 283                            struct rtl_stats *stats,
 284                            struct ieee80211_rx_status *rx_status,
 285                            u8 *pdesc, struct sk_buff *skb)
 286 {
 287         struct rx_fwinfo_92c *p_drvinfo;
 288         struct rx_desc_92c *p_desc = (struct rx_desc_92c *)pdesc;
 289         u32 phystatus = GET_RX_DESC_PHY_STATUS(pdesc);
 290
 291         stats->length = (u16) GET_RX_DESC_PKT_LEN(pdesc);
 292         stats->rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(pdesc) *
 293                                  RX_DRV_INFO_SIZE_UNIT;
 294         stats->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03);
 295         stats->icv = (u16) GET_RX_DESC_ICV(pdesc);
 296         stats->crc = (u16) GET_RX_DESC_CRC32(pdesc);
 297         stats->hwerror = (stats->crc | stats->icv);
 298         stats->decrypted = !GET_RX_DESC_SWDEC(pdesc);
 299         stats->rate = (u8) GET_RX_DESC_RX_MCS(pdesc);
 300         stats->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc);
 301         stats->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1);
 302         stats->isfirst_ampdu = (bool)((GET_RX_DESC_PAGGR(pdesc) == 1)
 303                                    && (GET_RX_DESC_FAGGR(pdesc) == 1));
 304         stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
 305         stats->rx_is40mhzpacket = (bool)GET_RX_DESC_BW(pdesc);
 306         stats->is_ht = (bool)GET_RX_DESC_RX_HT(pdesc);
 307         rx_status->freq = hw->conf.chandef.chan->center_freq;
 308         rx_status->band = hw->conf.chandef.chan->band;
 309         if (GET_RX_DESC_CRC32(pdesc))
 310                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 311         if (!GET_RX_DESC_SWDEC(pdesc))
 312                 rx_status->flag |= RX_FLAG_DECRYPTED;
 313         if (GET_RX_DESC_BW(pdesc))
 314                 rx_status->bw = RATE_INFO_BW_40;
 315         if (GET_RX_DESC_RX_HT(pdesc))
 316                 rx_status->encoding = RX_ENC_HT;
 317         rx_status->flag |= RX_FLAG_MACTIME_START;
 318         if (stats->decrypted)
 319                 rx_status->flag |= RX_FLAG_DECRYPTED;
 320         rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht,
 321                                                    false, stats->rate);
 322         rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
 323         if (phystatus) {
 324                 p_drvinfo = (struct rx_fwinfo_92c *)(skb->data +
 325                                                      stats->rx_bufshift);
 326                 rtl92c_translate_rx_signal_stuff(hw, skb, stats, p_desc,
 327                                                  p_drvinfo);
 328         }
 329         /*rx_status->qual = stats->signal; */
 330         rx_status->signal = stats->recvsignalpower + 10;
 331         return true;
 332 }
 333
 334 #define RTL_RX_DRV_INFO_UNIT            8
 335
 336 static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
 337 {
 338         struct ieee80211_rx_status *rx_status =
 339                  (struct ieee80211_rx_status *)IEEE80211_SKB_RXCB(skb);
 340         u32 skb_len, pkt_len, drvinfo_len;
 341         struct rtl_priv *rtlpriv = rtl_priv(hw);
 342         u8 *rxdesc;
 343         struct rtl_stats stats = {
 344                 .signal = 0,
 345                 .rate = 0,
 346         };
 347         struct rx_fwinfo_92c *p_drvinfo;
 348         bool bv;
 349         __le16 fc;
 350         struct ieee80211_hdr *hdr;
 351
 352         memset(rx_status, 0, sizeof(*rx_status));
 353         rxdesc  = skb->data;
 354         skb_len = skb->len;
 355         drvinfo_len = (GET_RX_DESC_DRVINFO_SIZE(rxdesc) * RTL_RX_DRV_INFO_UNIT);
 356         pkt_len         = GET_RX_DESC_PKT_LEN(rxdesc);
 357         /* TODO: Error recovery. drop this skb or something. */
 358         WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
 359         stats.length = (u16) GET_RX_DESC_PKT_LEN(rxdesc);
 360         stats.rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(rxdesc) *
 361                                 RX_DRV_INFO_SIZE_UNIT;
 362         stats.rx_bufshift = (u8) (GET_RX_DESC_SHIFT(rxdesc) & 0x03);
 363         stats.icv = (u16) GET_RX_DESC_ICV(rxdesc);
 364         stats.crc = (u16) GET_RX_DESC_CRC32(rxdesc);
 365         stats.hwerror = (stats.crc | stats.icv);
 366         stats.decrypted = !GET_RX_DESC_SWDEC(rxdesc);
 367         stats.rate = (u8) GET_RX_DESC_RX_MCS(rxdesc);
 368         stats.shortpreamble = (u16) GET_RX_DESC_SPLCP(rxdesc);
 369         stats.isampdu = (bool) ((GET_RX_DESC_PAGGR(rxdesc) == 1)
 370                                    && (GET_RX_DESC_FAGGR(rxdesc) == 1));
 371         stats.timestamp_low = GET_RX_DESC_TSFL(rxdesc);
 372         stats.rx_is40mhzpacket = (bool)GET_RX_DESC_BW(rxdesc);
 373         stats.is_ht = (bool)GET_RX_DESC_RX_HT(rxdesc);
 374         /* TODO: is center_freq changed when doing scan? */
 375         /* TODO: Shall we add protection or just skip those two step? */
 376         rx_status->freq = hw->conf.chandef.chan->center_freq;
 377         rx_status->band = hw->conf.chandef.chan->band;
 378         if (GET_RX_DESC_CRC32(rxdesc))
 379                 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 380         if (!GET_RX_DESC_SWDEC(rxdesc))
 381                 rx_status->flag |= RX_FLAG_DECRYPTED;
 382         if (GET_RX_DESC_BW(rxdesc))
 383                 rx_status->bw = RATE_INFO_BW_40;
 384         if (GET_RX_DESC_RX_HT(rxdesc))
 385                 rx_status->encoding = RX_ENC_HT;
 386         /* Data rate */
 387         rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats.is_ht,
 388                                                    false, stats.rate);
 389         /*  There is a phy status after this rx descriptor. */
 390         if (GET_RX_DESC_PHY_STATUS(rxdesc)) {
 391                 p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
 392                 rtl92c_translate_rx_signal_stuff(hw, skb, &stats,
 393                                  (struct rx_desc_92c *)rxdesc, p_drvinfo);
 394         }
 395         skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
 396         hdr = (struct ieee80211_hdr *)(skb->data);
 397         fc = hdr->frame_control;
 398         bv = ieee80211_is_probe_resp(fc);
 399         if (bv)
 400                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 401                          "Got probe response frame\n");
 402         if (ieee80211_is_beacon(fc))
 403                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got beacon frame\n");
 404         if (ieee80211_is_data(fc))
 405                 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got data frame\n");
 406         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 407                  "Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X\n",
 408                  fc,
 409                  (u32)hdr->addr1[0], (u32)hdr->addr1[1],
 410                  (u32)hdr->addr1[2], (u32)hdr->addr1[3],
 411                  (u32)hdr->addr1[4], (u32)hdr->addr1[5]);
 412         ieee80211_rx(hw, skb);
 413 }
 414
 415 void  rtl8192cu_rx_hdl(struct ieee80211_hw *hw, struct sk_buff * skb)
 416 {
 417         _rtl_rx_process(hw, skb);
 418 }
 419
 420 /*----------------------------------------------------------------------
 421  *
 422  *      Tx handler
 423  *
 424  *---------------------------------------------------------------------- */
 425 void rtl8192c_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb)
 426 {
 427 }
 428
 429 int rtl8192c_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
 430                          struct sk_buff *skb)
 431 {
 432         return 0;
 433 }
 434
 435 struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *hw,
 436                                            struct sk_buff_head *list)
 437 {
 438         return skb_dequeue(list);
 439 }
 440
 441 /*======================================== trx ===============================*/
 442
 443 static void _rtl_fill_usb_tx_desc(u8 *txdesc)
 444 {
 445         SET_TX_DESC_OWN(txdesc, 1);
 446         SET_TX_DESC_LAST_SEG(txdesc, 1);
 447         SET_TX_DESC_FIRST_SEG(txdesc, 1);
 448 }
 449
 450 /**
 451  *      For HW recovery information
 452  */
 453 static void _rtl_tx_desc_checksum(u8 *txdesc)
 454 {
 455         __le16 *ptr = (__le16 *)txdesc;
 456         u16     checksum = 0;
 457         u32 index;
 458
 459         /* Clear first */
 460         SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, 0);
 461         for (index = 0; index < 16; index++)
 462                 checksum = checksum ^ le16_to_cpu(*(ptr + index));
 463         SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, checksum);
 464 }
 465
 466 void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
 467                           struct ieee80211_hdr *hdr, u8 *pdesc_tx,
 468                           u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
 469                           struct ieee80211_sta *sta,
 470                           struct sk_buff *skb,
 471                           u8 queue_index,
 472                           struct rtl_tcb_desc *tcb_desc)
 473 {
 474         struct rtl_priv *rtlpriv = rtl_priv(hw);
 475         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 476         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 477         bool defaultadapter = true;
 478         u8 *qc = ieee80211_get_qos_ctl(hdr);
 479         u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
 480         u16 seq_number;
 481         __le16 fc = hdr->frame_control;
 482         u8 rate_flag = info->control.rates[0].flags;
 483         u16 pktlen = skb->len;
 484         enum rtl_desc_qsel fw_qsel = _rtl8192cu_mq_to_descq(hw, fc,
 485                                                 skb_get_queue_mapping(skb));
 486         u8 *txdesc;
 487
 488         seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
 489         rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
 490         txdesc = skb_push(skb, RTL_TX_HEADER_SIZE);
 491         memset(txdesc, 0, RTL_TX_HEADER_SIZE);
 492         SET_TX_DESC_PKT_SIZE(txdesc, pktlen);
 493         SET_TX_DESC_LINIP(txdesc, 0);
 494         SET_TX_DESC_PKT_OFFSET(txdesc, RTL_DUMMY_OFFSET);
 495         SET_TX_DESC_OFFSET(txdesc, RTL_TX_HEADER_SIZE);
 496         SET_TX_DESC_TX_RATE(txdesc, tcb_desc->hw_rate);
 497         if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
 498                 SET_TX_DESC_DATA_SHORTGI(txdesc, 1);
 499         if (mac->tids[tid].agg.agg_state == RTL_AGG_ON &&
 500                     info->flags & IEEE80211_TX_CTL_AMPDU) {
 501                 SET_TX_DESC_AGG_ENABLE(txdesc, 1);
 502                 SET_TX_DESC_MAX_AGG_NUM(txdesc, 0x14);
 503         } else {
 504                 SET_TX_DESC_AGG_BREAK(txdesc, 1);
 505         }
 506         SET_TX_DESC_SEQ(txdesc, seq_number);
 507         SET_TX_DESC_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable &&
 508                                !tcb_desc->cts_enable) ? 1 : 0));
 509         SET_TX_DESC_HW_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable ||
 510                                   tcb_desc->cts_enable) ? 1 : 0));
 511         SET_TX_DESC_CTS2SELF(txdesc, ((tcb_desc->cts_enable) ? 1 : 0));
 512         SET_TX_DESC_RTS_STBC(txdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
 513         SET_TX_DESC_RTS_RATE(txdesc, tcb_desc->rts_rate);
 514         SET_TX_DESC_RTS_BW(txdesc, 0);
 515         SET_TX_DESC_RTS_SC(txdesc, tcb_desc->rts_sc);
 516         SET_TX_DESC_RTS_SHORT(txdesc,
 517                               ((tcb_desc->rts_rate <= DESC_RATE54M) ?
 518                                (tcb_desc->rts_use_shortpreamble ? 1 : 0)
 519                                : (tcb_desc->rts_use_shortgi ? 1 : 0)));
 520         if (mac->bw_40) {
 521                 if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
 522                         SET_TX_DESC_DATA_BW(txdesc, 1);
 523                         SET_TX_DESC_DATA_SC(txdesc, 3);
 524                 } else if(rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH){
 525                         SET_TX_DESC_DATA_BW(txdesc, 1);
 526                         SET_TX_DESC_DATA_SC(txdesc, mac->cur_40_prime_sc);
 527                 } else {
 528                         SET_TX_DESC_DATA_BW(txdesc, 0);
 529                         SET_TX_DESC_DATA_SC(txdesc, 0);
 530                 }
 531         } else {
 532                 SET_TX_DESC_DATA_BW(txdesc, 0);
 533                 SET_TX_DESC_DATA_SC(txdesc, 0);
 534         }
 535         rcu_read_lock();
 536         sta = ieee80211_find_sta(mac->vif, mac->bssid);
 537         if (sta) {
 538                 u8 ampdu_density = sta->ht_cap.ampdu_density;
 539
 540                 SET_TX_DESC_AMPDU_DENSITY(txdesc, ampdu_density);
 541         }
 542         rcu_read_unlock();
 543         if (info->control.hw_key) {
 544                 struct ieee80211_key_conf *keyconf = info->control.hw_key;
 545
 546                 switch (keyconf->cipher) {
 547                 case WLAN_CIPHER_SUITE_WEP40:
 548                 case WLAN_CIPHER_SUITE_WEP104:
 549                 case WLAN_CIPHER_SUITE_TKIP:
 550                         SET_TX_DESC_SEC_TYPE(txdesc, 0x1);
 551                         break;
 552                 case WLAN_CIPHER_SUITE_CCMP:
 553                         SET_TX_DESC_SEC_TYPE(txdesc, 0x3);
 554                         break;
 555                 default:
 556                         SET_TX_DESC_SEC_TYPE(txdesc, 0x0);
 557                         break;
 558                 }
 559         }
 560         SET_TX_DESC_PKT_ID(txdesc, 0);
 561         SET_TX_DESC_QUEUE_SEL(txdesc, fw_qsel);
 562         SET_TX_DESC_DATA_RATE_FB_LIMIT(txdesc, 0x1F);
 563         SET_TX_DESC_RTS_RATE_FB_LIMIT(txdesc, 0xF);
 564         SET_TX_DESC_DISABLE_FB(txdesc, 0);
 565         SET_TX_DESC_USE_RATE(txdesc, tcb_desc->use_driver_rate ? 1 : 0);
 566         if (ieee80211_is_data_qos(fc)) {
 567                 if (mac->rdg_en) {
 568                         RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
 569                                  "Enable RDG function\n");
 570                         SET_TX_DESC_RDG_ENABLE(txdesc, 1);
 571                         SET_TX_DESC_HTC(txdesc, 1);
 572                 }
 573         }
 574         if (rtlpriv->dm.useramask) {
 575                 SET_TX_DESC_RATE_ID(txdesc, tcb_desc->ratr_index);
 576                 SET_TX_DESC_MACID(txdesc, tcb_desc->mac_id);
 577         } else {
 578                 SET_TX_DESC_RATE_ID(txdesc, 0xC + tcb_desc->ratr_index);
 579                 SET_TX_DESC_MACID(txdesc, tcb_desc->ratr_index);
 580         }
 581         if ((!ieee80211_is_data_qos(fc)) && ppsc->leisure_ps &&
 582               ppsc->fwctrl_lps) {
 583                 SET_TX_DESC_HWSEQ_EN(txdesc, 1);
 584                 SET_TX_DESC_PKT_ID(txdesc, 8);
 585                 if (!defaultadapter)
 586                         SET_TX_DESC_QOS(txdesc, 1);
 587         }
 588         if (ieee80211_has_morefrags(fc))
 589                 SET_TX_DESC_MORE_FRAG(txdesc, 1);
 590         if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
 591             is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 592                 SET_TX_DESC_BMC(txdesc, 1);
 593         _rtl_fill_usb_tx_desc(txdesc);
 594         _rtl_tx_desc_checksum(txdesc);
 595         RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "==>\n");
 596 }
 597
 598 void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 *pdesc,
 599                               u32 buffer_len, bool is_pspoll)
 600 {
 601         /* Clear all status */
 602         memset(pdesc, 0, RTL_TX_HEADER_SIZE);
 603         SET_TX_DESC_FIRST_SEG(pdesc, 1); /* bFirstSeg; */
 604         SET_TX_DESC_LAST_SEG(pdesc, 1); /* bLastSeg; */
 605         SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE); /* Offset = 32 */
 606         SET_TX_DESC_PKT_SIZE(pdesc, buffer_len); /* Buffer size + command hdr */
 607         SET_TX_DESC_QUEUE_SEL(pdesc, QSLT_MGNT); /* Fixed queue of Mgnt queue */
 608         /* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error
 609          * vlaue by Hw. */
 610         if (is_pspoll) {
 611                 SET_TX_DESC_NAV_USE_HDR(pdesc, 1);
 612         } else {
 613                 SET_TX_DESC_HWSEQ_EN(pdesc, 1); /* Hw set sequence number */
 614                 SET_TX_DESC_PKT_ID(pdesc, 0x100); /* set bit3 to 1. */
 615         }
 616         SET_TX_DESC_USE_RATE(pdesc, 1); /* use data rate which is set by Sw */
 617         SET_TX_DESC_OWN(pdesc, 1);
 618         SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
 619         _rtl_tx_desc_checksum(pdesc);
 620 }
 621
 622 void rtl92cu_tx_fill_cmddesc(struct ieee80211_hw *hw,
 623                              u8 *pdesc, bool firstseg,
 624                              bool lastseg, struct sk_buff *skb)
 625 {
 626         struct rtl_priv *rtlpriv = rtl_priv(hw);
 627         u8 fw_queue = QSLT_BEACON;
 628         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
 629         __le16 fc = hdr->frame_control;
 630
 631         memset((void *)pdesc, 0, RTL_TX_HEADER_SIZE);
 632         if (firstseg)
 633                 SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE);
 634         SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
 635         SET_TX_DESC_SEQ(pdesc, 0);
 636         SET_TX_DESC_LINIP(pdesc, 0);
 637         SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
 638         SET_TX_DESC_FIRST_SEG(pdesc, 1);
 639         SET_TX_DESC_LAST_SEG(pdesc, 1);
 640         SET_TX_DESC_RATE_ID(pdesc, 7);
 641         SET_TX_DESC_MACID(pdesc, 0);
 642         SET_TX_DESC_OWN(pdesc, 1);
 643         SET_TX_DESC_PKT_SIZE(pdesc, (u16)skb->len);
 644         SET_TX_DESC_FIRST_SEG(pdesc, 1);
 645         SET_TX_DESC_LAST_SEG(pdesc, 1);
 646         SET_TX_DESC_OFFSET(pdesc, 0x20);
 647         SET_TX_DESC_USE_RATE(pdesc, 1);
 648         if (!ieee80211_is_data_qos(fc)) {
 649                 SET_TX_DESC_HWSEQ_EN(pdesc, 1);
 650                 SET_TX_DESC_PKT_ID(pdesc, 8);
 651         }
 652         RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD, "H2C Tx Cmd Content",
 653                       pdesc, RTL_TX_DESC_SIZE);
 654 }