drivers/staging/rtl8712/rtl8712_xmit.c

   1 /******************************************************************************
   2  * rtl8712_xmit.c
   3  *
   4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   5  * Linux device driver for RTL8192SU
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  19  *
  20  * Modifications for inclusion into the Linux staging tree are
  21  * Copyright(c) 2010 Larry Finger. All rights reserved.
  22  *
  23  * Contact information:
  24  * WLAN FAE <wlanfae@realtek.com>
  25  * Larry Finger <Larry.Finger@lwfinger.net>
  26  *
  27  ******************************************************************************/
  28
  29 #define _RTL8712_XMIT_C_
  30
  31 #include "osdep_service.h"
  32 #include "drv_types.h"
  33 #include "wifi.h"
  34 #include "osdep_intf.h"
  35 #include "usb_ops.h"
  36
  37 static void dump_xframe(struct _adapter *padapter,
  38                         struct xmit_frame *pxmitframe);
  39 static void update_txdesc(struct xmit_frame *pxmitframe, uint *pmem, int sz);
  40
  41 sint _r8712_init_hw_txqueue(struct hw_txqueue *phw_txqueue, u8 ac_tag)
  42 {
  43         phw_txqueue->ac_tag = ac_tag;
  44         switch (ac_tag) {
  45         case BE_QUEUE_INX:
  46                 phw_txqueue->ff_hwaddr = RTL8712_DMA_BEQ;
  47                 break;
  48         case BK_QUEUE_INX:
  49                 phw_txqueue->ff_hwaddr = RTL8712_DMA_BKQ;
  50                 break;
  51         case VI_QUEUE_INX:
  52                 phw_txqueue->ff_hwaddr = RTL8712_DMA_VIQ;
  53                 break;
  54         case VO_QUEUE_INX:
  55                 phw_txqueue->ff_hwaddr = RTL8712_DMA_VOQ;
  56                 break;
  57         case BMC_QUEUE_INX:
  58                 phw_txqueue->ff_hwaddr = RTL8712_DMA_BEQ;
  59                 break;
  60         }
  61         return _SUCCESS;
  62 }
  63
  64 int r8712_txframes_sta_ac_pending(struct _adapter *padapter,
  65                                   struct pkt_attrib *pattrib)
  66 {
  67         struct sta_info *psta;
  68         struct tx_servq *ptxservq;
  69         int priority = pattrib->priority;
  70
  71         psta = pattrib->psta;
  72         switch (priority) {
  73         case 1:
  74         case 2:
  75                 ptxservq = &(psta->sta_xmitpriv.bk_q);
  76                 break;
  77         case 4:
  78         case 5:
  79                 ptxservq = &(psta->sta_xmitpriv.vi_q);
  80                 break;
  81         case 6:
  82         case 7:
  83                 ptxservq = &(psta->sta_xmitpriv.vo_q);
  84                 break;
  85         case 0:
  86         case 3:
  87         default:
  88                 ptxservq = &(psta->sta_xmitpriv.be_q);
  89         break;
  90         }
  91         return ptxservq->qcnt;
  92 }
  93
  94 static u32 get_ff_hwaddr(struct xmit_frame *pxmitframe)
  95 {
  96         u32 addr = 0;
  97         struct pkt_attrib *pattrib = &pxmitframe->attrib;
  98         struct _adapter *padapter = pxmitframe->padapter;
  99         struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
 100
 101         if (pxmitframe->frame_tag == TXAGG_FRAMETAG)
 102                 addr = RTL8712_DMA_H2CCMD;
 103         else if (pxmitframe->frame_tag == MGNT_FRAMETAG)
 104                 addr = RTL8712_DMA_MGTQ;
 105         else if (pdvobj->nr_endpoint == 6) {
 106                 switch (pattrib->priority) {
 107                 case 0:
 108                 case 3:
 109                         addr = RTL8712_DMA_BEQ;
 110                         break;
 111                 case 1:
 112                 case 2:
 113                         addr = RTL8712_DMA_BKQ;
 114                         break;
 115                 case 4:
 116                 case 5:
 117                         addr = RTL8712_DMA_VIQ;
 118                         break;
 119                 case 6:
 120                 case 7:
 121                         addr = RTL8712_DMA_VOQ;
 122                         break;
 123                 case 0x10:
 124                 case 0x11:
 125                 case 0x12:
 126                 case 0x13:
 127                         addr = RTL8712_DMA_H2CCMD;
 128                         break;
 129                 default:
 130                         addr = RTL8712_DMA_BEQ;
 131                         break;
 132                 }
 133         } else if (pdvobj->nr_endpoint == 4) {
 134                 switch (pattrib->qsel) {
 135                 case 0:
 136                 case 3:
 137                 case 1:
 138                 case 2:
 139                         addr = RTL8712_DMA_BEQ;/*RTL8712_EP_LO;*/
 140                         break;
 141                 case 4:
 142                 case 5:
 143                 case 6:
 144                 case 7:
 145                         addr = RTL8712_DMA_VOQ;/*RTL8712_EP_HI;*/
 146                         break;
 147                 case 0x10:
 148                 case 0x11:
 149                 case 0x12:
 150                 case 0x13:
 151                         addr = RTL8712_DMA_H2CCMD;
 152                         break;
 153                 default:
 154                         addr = RTL8712_DMA_BEQ;/*RTL8712_EP_LO;*/
 155                         break;
 156                 }
 157         }
 158         return addr;
 159 }
 160
 161 static struct xmit_frame *dequeue_one_xmitframe(struct xmit_priv *pxmitpriv,
 162                                          struct hw_xmit *phwxmit,
 163                                          struct tx_servq *ptxservq,
 164                                          struct  __queue *pframe_queue)
 165 {
 166         struct list_head *xmitframe_plist, *xmitframe_phead;
 167         struct  xmit_frame *pxmitframe = NULL;
 168
 169         xmitframe_phead = &pframe_queue->queue;
 170         xmitframe_plist = xmitframe_phead->next;
 171         if ((end_of_queue_search(xmitframe_phead, xmitframe_plist)) == false) {
 172                 pxmitframe = LIST_CONTAINOR(xmitframe_plist,
 173                              struct xmit_frame, list);
 174                 list_del_init(&pxmitframe->list);
 175                 ptxservq->qcnt--;
 176                 phwxmit->txcmdcnt++;
 177         }
 178         return pxmitframe;
 179 }
 180
 181 static struct xmit_frame *dequeue_xframe_ex(struct xmit_priv *pxmitpriv,
 182                                      struct hw_xmit *phwxmit_i, sint entry)
 183 {
 184         unsigned long irqL0;
 185         struct list_head *sta_plist, *sta_phead;
 186         struct hw_xmit *phwxmit;
 187         struct tx_servq *ptxservq = NULL;
 188         struct  __queue *pframe_queue = NULL;
 189         struct  xmit_frame *pxmitframe = NULL;
 190         int i, inx[4];
 191         int j, tmp, acirp_cnt[4];
 192
 193         /*entry indx: 0->vo, 1->vi, 2->be, 3->bk.*/
 194         inx[0] = 0; acirp_cnt[0] = pxmitpriv->voq_cnt;
 195         inx[1] = 1; acirp_cnt[1] = pxmitpriv->viq_cnt;
 196         inx[2] = 2; acirp_cnt[2] = pxmitpriv->beq_cnt;
 197         inx[3] = 3; acirp_cnt[3] = pxmitpriv->bkq_cnt;
 198         for (i = 0; i < 4; i++) {
 199                 for (j = i + 1; j < 4; j++) {
 200                         if (acirp_cnt[j] < acirp_cnt[i]) {
 201                                 tmp = acirp_cnt[i];
 202                                 acirp_cnt[i] = acirp_cnt[j];
 203                                 acirp_cnt[j] = tmp;
 204                                 tmp = inx[i];
 205                                 inx[i] = inx[j];
 206                                 inx[j] = tmp;
 207                         }
 208                 }
 209         }
 210         spin_lock_irqsave(&pxmitpriv->lock, irqL0);
 211         for (i = 0; i < entry; i++) {
 212                 phwxmit = phwxmit_i + inx[i];
 213                 sta_phead = &phwxmit->sta_queue->queue;
 214                 sta_plist = sta_phead->next;
 215                 while ((end_of_queue_search(sta_phead, sta_plist)) == false) {
 216                         ptxservq = LIST_CONTAINOR(sta_plist, struct tx_servq,
 217                                   tx_pending);
 218                         pframe_queue = &ptxservq->sta_pending;
 219                         pxmitframe = dequeue_one_xmitframe(pxmitpriv, phwxmit,
 220                                      ptxservq, pframe_queue);
 221                         if (pxmitframe) {
 222                                 phwxmit->accnt--;
 223                                 goto exit_dequeue_xframe_ex;
 224                         }
 225                         sta_plist = sta_plist->next;
 226                         /*Remove sta node when there are no pending packets.*/
 227                         if (list_empty(&pframe_queue->queue)) {
 228                                 /* must be done after sta_plist->next
 229                                  * and before break
 230                                  */
 231                                 list_del_init(&ptxservq->tx_pending);
 232                         }
 233                 }
 234         }
 235 exit_dequeue_xframe_ex:
 236         spin_unlock_irqrestore(&pxmitpriv->lock, irqL0);
 237         return pxmitframe;
 238 }
 239
 240 void r8712_do_queue_select(struct _adapter *padapter,
 241                            struct pkt_attrib *pattrib)
 242 {
 243         unsigned int qsel = 0;
 244         struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
 245
 246         if (pdvobj->nr_endpoint == 6)
 247                 qsel = (unsigned int) pattrib->priority;
 248         else if (pdvobj->nr_endpoint == 4) {
 249                 qsel = (unsigned int) pattrib->priority;
 250                 if (qsel == 0 || qsel == 3)
 251                         qsel = 3;
 252                 else if (qsel == 1 || qsel == 2)
 253                         qsel = 1;
 254                 else if (qsel == 4 || qsel == 5)
 255                         qsel = 5;
 256                 else if (qsel == 6 || qsel == 7)
 257                         qsel = 7;
 258                 else
 259                         qsel = 3;
 260         }
 261         pattrib->qsel = qsel;
 262 }
 263
 264 #ifdef CONFIG_R8712_TX_AGGR
 265 u8 r8712_construct_txaggr_cmd_desc(struct xmit_buf *pxmitbuf)
 266 {
 267         struct tx_desc *ptx_desc = (struct tx_desc *)pxmitbuf->pbuf;
 268
 269         /* Fill up TxCmd Descriptor according as USB FW Tx Aaggregation info.*/
 270         /* dw0 */
 271         ptx_desc->txdw0 = cpu_to_le32(CMD_HDR_SZ&0xffff);
 272         ptx_desc->txdw0 |=
 273                 cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ)<<OFFSET_SHT)&0x00ff0000);
 274         ptx_desc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
 275
 276         /* dw1 */
 277         ptx_desc->txdw1 |= cpu_to_le32((0x13<<QSEL_SHT)&0x00001f00);
 278
 279         return _SUCCESS;
 280 }
 281
 282 u8 r8712_construct_txaggr_cmd_hdr(struct xmit_buf *pxmitbuf)
 283 {
 284         struct xmit_frame *pxmitframe = (struct xmit_frame *)
 285                 pxmitbuf->priv_data;
 286         struct _adapter *padapter = pxmitframe->padapter;
 287         struct cmd_priv *pcmdpriv = &(padapter->cmdpriv);
 288         struct cmd_hdr *pcmd_hdr = (struct cmd_hdr  *)
 289                 (pxmitbuf->pbuf + TXDESC_SIZE);
 290
 291         /* Fill up Cmd Header for USB FW Tx Aggregation.*/
 292         /* dw0 */
 293         pcmd_hdr->cmd_dw0 = cpu_to_le32((GEN_CMD_CODE(_AMSDU_TO_AMPDU) << 16) |
 294                                         (pcmdpriv->cmd_seq << 24));
 295         pcmdpriv->cmd_seq++;
 296
 297         return _SUCCESS;
 298 }
 299
 300 u8 r8712_append_mpdu_unit(struct xmit_buf *pxmitbuf,
 301                         struct xmit_frame *pxmitframe)
 302 {
 303         struct _adapter *padapter = pxmitframe->padapter;
 304         struct tx_desc *ptx_desc = (struct tx_desc *)pxmitbuf->pbuf;
 305         int last_txcmdsz = 0;
 306         int padding_sz = 0;
 307
 308         /* 802.3->802.11 convertor */
 309         r8712_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
 310         /* free skb struct */
 311         r8712_xmit_complete(padapter, pxmitframe);
 312         if (pxmitframe->attrib.ether_type != 0x0806) {
 313                 if ((pxmitframe->attrib.ether_type != 0x888e) &&
 314                         (pxmitframe->attrib.dhcp_pkt != 1)) {
 315                         r8712_issue_addbareq_cmd(padapter,
 316                                         pxmitframe->attrib.priority);
 317                 }
 318         }
 319         pxmitframe->last[0] = 1;
 320         update_txdesc(pxmitframe, (uint *)(pxmitframe->buf_addr),
 321                 pxmitframe->attrib.last_txcmdsz);
 322         /*padding zero */
 323         last_txcmdsz = pxmitframe->attrib.last_txcmdsz;
 324         padding_sz = (8 - (last_txcmdsz % 8));
 325         if ((last_txcmdsz % 8) != 0) {
 326                 int i;
 327
 328                 for (i = 0; i < padding_sz; i++)
 329                         *(pxmitframe->buf_addr+TXDESC_SIZE+last_txcmdsz+i) = 0;
 330         }
 331         /* Add the new mpdu's length */
 332         ptx_desc->txdw0 = cpu_to_le32((ptx_desc->txdw0&0xffff0000) |
 333                 ((ptx_desc->txdw0&0x0000ffff)+
 334                         ((TXDESC_SIZE+last_txcmdsz+padding_sz)&0x0000ffff)));
 335
 336         return _SUCCESS;
 337 }
 338
 339
 340 u8 r8712_xmitframe_aggr_1st(struct xmit_buf *pxmitbuf,
 341                         struct xmit_frame *pxmitframe)
 342 {
 343         /* linux complete context doesnt need to protect */
 344         pxmitframe->pxmitbuf = pxmitbuf;
 345         pxmitbuf->priv_data = pxmitframe;
 346         pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
 347         /* buffer addr assoc */
 348         pxmitframe->buf_addr = pxmitbuf->pbuf+TXDESC_SIZE+CMD_HDR_SZ;
 349         /*RTL8712_DMA_H2CCMD */
 350         r8712_construct_txaggr_cmd_desc(pxmitbuf);
 351         r8712_construct_txaggr_cmd_hdr(pxmitbuf);
 352         if (r8712_append_mpdu_unit(pxmitbuf, pxmitframe) == _SUCCESS)
 353                 pxmitbuf->aggr_nr = 1;
 354
 355         return _SUCCESS;
 356 }
 357
 358 u16 r8712_xmitframe_aggr_next(struct xmit_buf *pxmitbuf,
 359                         struct xmit_frame *pxmitframe)
 360 {
 361         pxmitframe->pxmitbuf = pxmitbuf;
 362         pxmitbuf->priv_data = pxmitframe;
 363         pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
 364         /* buffer addr assoc */
 365         pxmitframe->buf_addr = pxmitbuf->pbuf + TXDESC_SIZE +
 366                 (((struct tx_desc *)pxmitbuf->pbuf)->txdw0 & 0x0000ffff);
 367         if (r8712_append_mpdu_unit(pxmitbuf, pxmitframe) == _SUCCESS) {
 368                 r8712_free_xmitframe_ex(&pxmitframe->padapter->xmitpriv,
 369                                         pxmitframe);
 370                 pxmitbuf->aggr_nr++;
 371         }
 372
 373         return TXDESC_SIZE +
 374                 (((struct tx_desc *)pxmitbuf->pbuf)->txdw0 & 0x0000ffff);
 375 }
 376
 377 u8 r8712_dump_aggr_xframe(struct xmit_buf *pxmitbuf,
 378                         struct xmit_frame *pxmitframe)
 379 {
 380         struct _adapter *padapter = pxmitframe->padapter;
 381         struct dvobj_priv *pdvobj = (struct dvobj_priv *) &padapter->dvobjpriv;
 382         struct tx_desc *ptxdesc = (struct tx_desc *)pxmitbuf->pbuf;
 383         struct cmd_hdr *pcmd_hdr = (struct cmd_hdr *)
 384                 (pxmitbuf->pbuf + TXDESC_SIZE);
 385         u16 total_length = (u16) (ptxdesc->txdw0 & 0xffff);
 386
 387         /* use 1st xmitframe as media */
 388         xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
 389         pcmd_hdr->cmd_dw0 = cpu_to_le32(((total_length-CMD_HDR_SZ)&0x0000ffff)|
 390                                         (pcmd_hdr->cmd_dw0&0xffff0000));
 391
 392         /* urb length in cmd_dw1 */
 393         pcmd_hdr->cmd_dw1 = cpu_to_le32((pxmitbuf->aggr_nr & 0xff)|
 394                                         ((total_length+TXDESC_SIZE) << 16));
 395         pxmitframe->last[0] = 1;
 396         pxmitframe->bpending[0] = false;
 397         pxmitframe->mem_addr = pxmitbuf->pbuf;
 398
 399         if ((pdvobj->ishighspeed && ((total_length+TXDESC_SIZE)%0x200) == 0) ||
 400                 ((!pdvobj->ishighspeed &&
 401                         ((total_length+TXDESC_SIZE)%0x40) == 0))) {
 402                 ptxdesc->txdw0 |= cpu_to_le32
 403                         (((TXDESC_SIZE+OFFSET_SZ+8)<<OFFSET_SHT)&0x00ff0000);
 404                 /*32 bytes for TX Desc + 8 bytes pending*/
 405         } else {
 406                 ptxdesc->txdw0 |= cpu_to_le32
 407                         (((TXDESC_SIZE+OFFSET_SZ)<<OFFSET_SHT)&0x00ff0000);
 408                 /*default = 32 bytes for TX Desc*/
 409         }
 410         r8712_write_port(pxmitframe->padapter, RTL8712_DMA_H2CCMD,
 411                         total_length+TXDESC_SIZE, (u8 *)pxmitframe);
 412
 413         return _SUCCESS;
 414 }
 415
 416 #endif
 417
 418 static void update_txdesc(struct xmit_frame *pxmitframe, uint *pmem, int sz)
 419 {
 420         uint qsel;
 421         struct _adapter *padapter = pxmitframe->padapter;
 422         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 423         struct qos_priv *pqospriv = &pmlmepriv->qospriv;
 424         struct security_priv *psecuritypriv = &padapter->securitypriv;
 425         struct pkt_attrib *pattrib = &pxmitframe->attrib;
 426         struct tx_desc *ptxdesc = (struct tx_desc *)pmem;
 427         struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
 428 #ifdef CONFIG_R8712_TX_AGGR
 429         struct cmd_priv *pcmdpriv = (struct cmd_priv *)&padapter->cmdpriv;
 430 #endif
 431         u8 blnSetTxDescOffset;
 432         sint bmcst = IS_MCAST(pattrib->ra);
 433         struct ht_priv *phtpriv = &pmlmepriv->htpriv;
 434         struct tx_desc txdesc_mp;
 435
 436         memcpy(&txdesc_mp, ptxdesc, sizeof(struct tx_desc));
 437         memset(ptxdesc, 0, sizeof(struct tx_desc));
 438         /* offset 0 */
 439         ptxdesc->txdw0 |= cpu_to_le32(sz&0x0000ffff);
 440         if (pdvobj->ishighspeed) {
 441                 if (((sz + TXDESC_SIZE) % 512) == 0)
 442                         blnSetTxDescOffset = 1;
 443                 else
 444                         blnSetTxDescOffset = 0;
 445         } else {
 446                 if (((sz + TXDESC_SIZE) % 64) == 0)
 447                         blnSetTxDescOffset = 1;
 448                 else
 449                         blnSetTxDescOffset = 0;
 450         }
 451         if (blnSetTxDescOffset) {
 452                 /* 32 bytes for TX Desc + 8 bytes pending */
 453                 ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ + 8) <<
 454                               OFFSET_SHT) & 0x00ff0000);
 455         } else {
 456                 /* default = 32 bytes for TX Desc */
 457                 ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ) <<
 458                                   OFFSET_SHT) & 0x00ff0000);
 459         }
 460         ptxdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
 461         if (pxmitframe->frame_tag == DATA_FRAMETAG) {
 462                 /* offset 4 */
 463                 ptxdesc->txdw1 |= cpu_to_le32((pattrib->mac_id)&0x1f);
 464
 465 #ifdef CONFIG_R8712_TX_AGGR
 466                 /* dirty workaround, need to check if it is aggr cmd. */
 467                 if ((u8 *)pmem != (u8 *)pxmitframe->pxmitbuf->pbuf) {
 468                         ptxdesc->txdw0 |= cpu_to_le32
 469                                 ((0x3 << TYPE_SHT)&TYPE_MSK);
 470                         qsel = (uint)(pattrib->qsel & 0x0000001f);
 471                         if (qsel == 2)
 472                                 qsel = 0;
 473                         ptxdesc->txdw1 |= cpu_to_le32
 474                                 ((qsel << QSEL_SHT) & 0x00001f00);
 475                         ptxdesc->txdw2 = cpu_to_le32
 476                                 ((qsel << RTS_RC_SHT)&0x001f0000);
 477                         ptxdesc->txdw6 |= cpu_to_le32
 478                                 ((0x5 << RSVD6_SHT)&RSVD6_MSK);
 479                 } else {
 480                         ptxdesc->txdw0 |= cpu_to_le32
 481                                 ((0x3 << TYPE_SHT)&TYPE_MSK);
 482                         ptxdesc->txdw1 |= cpu_to_le32
 483                                 ((0x13 << QSEL_SHT) & 0x00001f00);
 484                         qsel = (uint)(pattrib->qsel & 0x0000001f);
 485                         if (qsel == 2)
 486                                 qsel = 0;
 487                         ptxdesc->txdw2 = cpu_to_le32
 488                                 ((qsel << RTS_RC_SHT)&0x0001f000);
 489                         ptxdesc->txdw7 |= cpu_to_le32
 490                                 (pcmdpriv->cmd_seq << 24);
 491                         pcmdpriv->cmd_seq++;
 492                 }
 493                 pattrib->qsel = 0x13;
 494 #else
 495                 qsel = (uint)(pattrib->qsel & 0x0000001f);
 496                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 497 #endif
 498                 if (!pqospriv->qos_option)
 499                         ptxdesc->txdw1 |= cpu_to_le32(BIT(16));/*Non-QoS*/
 500                 if ((pattrib->encrypt > 0) && !pattrib->bswenc) {
 501                         switch (pattrib->encrypt) {     /*SEC_TYPE*/
 502                         case _WEP40_:
 503                         case _WEP104_:
 504                                 ptxdesc->txdw1 |= cpu_to_le32((0x01 << 22) &
 505                                                   0x00c00000);
 506                                 /*KEY_ID when WEP is used;*/
 507                                 ptxdesc->txdw1 |= cpu_to_le32((psecuritypriv->
 508                                                   PrivacyKeyIndex << 17) &
 509                                                   0x00060000);
 510                                 break;
 511                         case _TKIP_:
 512                         case _TKIP_WTMIC_:
 513                                 ptxdesc->txdw1 |= cpu_to_le32((0x02 << 22) &
 514                                                   0x00c00000);
 515                                 break;
 516                         case _AES_:
 517                                 ptxdesc->txdw1 |= cpu_to_le32((0x03 << 22) &
 518                                                   0x00c00000);
 519                                 break;
 520                         case _NO_PRIVACY_:
 521                         default:
 522                                 break;
 523                         }
 524                 }
 525                 /*offset 8*/
 526                 if (bmcst)
 527                         ptxdesc->txdw2 |= cpu_to_le32(BMC);
 528
 529                 /*offset 12*/
 530                 /* f/w will increase the seqnum by itself, driver pass the
 531                  * correct priority to fw
 532                  * fw will check the correct priority for increasing the
 533                  * seqnum per tid. about usb using 4-endpoint, qsel points out
 534                  * the correct mapping between AC&Endpoint,
 535                  * the purpose is that correct mapping lets the MAC release
 536                  * the AC Queue list correctly. */
 537                 ptxdesc->txdw3 = cpu_to_le32((pattrib->priority << SEQ_SHT) &
 538                                  0x0fff0000);
 539                 if ((pattrib->ether_type != 0x888e) &&
 540                     (pattrib->ether_type != 0x0806) &&
 541                     (pattrib->dhcp_pkt != 1)) {
 542                         /*Not EAP & ARP type data packet*/
 543                         if (phtpriv->ht_option == 1) { /*B/G/N Mode*/
 544                                 if (phtpriv->ampdu_enable != true)
 545                                         ptxdesc->txdw2 |= cpu_to_le32(BK);
 546                         }
 547                 } else {
 548                         /* EAP data packet and ARP packet.
 549                          * Use the 1M data rate to send the EAP/ARP packet.
 550                          * This will maybe make the handshake smooth.
 551                          */
 552                         /*driver uses data rate*/
 553                         ptxdesc->txdw4 = cpu_to_le32(0x80000000);
 554                         ptxdesc->txdw5 = cpu_to_le32(0x001f8000);/*1M*/
 555                 }
 556                 if (pattrib->pctrl == 1) { /* mp tx packets */
 557                         struct tx_desc *ptxdesc_mp;
 558
 559                         ptxdesc_mp = &txdesc_mp;
 560                         /* offset 8 */
 561                         ptxdesc->txdw2 = cpu_to_le32(ptxdesc_mp->txdw2);
 562                         if (bmcst)
 563                                 ptxdesc->txdw2 |= cpu_to_le32(BMC);
 564                         ptxdesc->txdw2 |= cpu_to_le32(BK);
 565                         /* offset 16 */
 566                         ptxdesc->txdw4 = cpu_to_le32(ptxdesc_mp->txdw4);
 567                         /* offset 20 */
 568                         ptxdesc->txdw5 = cpu_to_le32(ptxdesc_mp->txdw5);
 569                         pattrib->pctrl = 0;/* reset to zero; */
 570                 }
 571         } else if (pxmitframe->frame_tag == MGNT_FRAMETAG) {
 572                 /* offset 4 */
 573                 ptxdesc->txdw1 |= (0x05) & 0x1f;/*CAM_ID(MAC_ID), default=5;*/
 574                 qsel = (uint)(pattrib->qsel & 0x0000001f);
 575                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 576                 ptxdesc->txdw1 |= cpu_to_le32(BIT(16));/* Non-QoS */
 577                 /* offset 8 */
 578                 if (bmcst)
 579                         ptxdesc->txdw2 |= cpu_to_le32(BMC);
 580                 /* offset 12 */
 581                 /* f/w will increase the seqnum by itself, driver pass the
 582                  * correct priority to fw
 583                  * fw will check the correct priority for increasing the seqnum
 584                  * per tid. about usb using 4-endpoint, qsel points out the
 585                  * correct mapping between AC&Endpoint,
 586                  * the purpose is that correct mapping let the MAC releases
 587                  * the AC Queue list correctly. */
 588                 ptxdesc->txdw3 = cpu_to_le32((pattrib->priority << SEQ_SHT) &
 589                                               0x0fff0000);
 590                 /* offset 16 */
 591                 ptxdesc->txdw4 = cpu_to_le32(0x80002040);/*gtest*/
 592                 /* offset 20 */
 593                 ptxdesc->txdw5 = cpu_to_le32(0x001f8000);/* gtest 1M */
 594         } else if (pxmitframe->frame_tag == TXAGG_FRAMETAG) {
 595                 /* offset 4 */
 596                 qsel = 0x13;
 597                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 598         } else {
 599                 /* offset 4 */
 600                 qsel = (uint)(pattrib->priority&0x0000001f);
 601                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 602                 /*offset 8*/
 603                 /*offset 12*/
 604                 ptxdesc->txdw3 = cpu_to_le32((pattrib->seqnum << SEQ_SHT) &
 605                                               0x0fff0000);
 606                 /*offset 16*/
 607                 ptxdesc->txdw4 = cpu_to_le32(0x80002040);/*gtest*/
 608                 /*offset 20*/
 609                 ptxdesc->txdw5 = cpu_to_le32(0x001f9600);/*gtest*/
 610         }
 611 }
 612
 613 int r8712_xmitframe_complete(struct _adapter *padapter,
 614                              struct xmit_priv *pxmitpriv,
 615                              struct xmit_buf *pxmitbuf)
 616 {
 617         struct hw_xmit *phwxmits;
 618         sint hwentry;
 619         struct xmit_frame *pxmitframe = NULL;
 620 #ifdef CONFIG_R8712_TX_AGGR
 621         struct xmit_frame *p2ndxmitframe = NULL;
 622 #else
 623         int res = _SUCCESS, xcnt = 0;
 624 #endif
 625
 626         phwxmits = pxmitpriv->hwxmits;
 627         hwentry = pxmitpriv->hwxmit_entry;
 628         if (pxmitbuf == NULL) {
 629                 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
 630                 if (!pxmitbuf)
 631                         return false;
 632 #ifdef CONFIG_R8712_TX_AGGR
 633                 pxmitbuf->aggr_nr = 0;
 634 #endif
 635         }
 636         /* 1st frame dequeued */
 637         pxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits, hwentry);
 638         /* need to remember the 1st frame */
 639         if (pxmitframe != NULL) {
 640
 641 #ifdef CONFIG_R8712_TX_AGGR
 642                 /* 1. dequeue 2nd frame
 643                  * 2. aggr if 2nd xframe is dequeued, else dump directly
 644                  */
 645                 if (AGGR_NR_HIGH_BOUND > 1)
 646                         p2ndxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits,
 647                                                         hwentry);
 648                 if (pxmitframe->frame_tag != DATA_FRAMETAG) {
 649                         r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 650                         return false;
 651                 }
 652                 if (p2ndxmitframe != NULL)
 653                         if (p2ndxmitframe->frame_tag != DATA_FRAMETAG) {
 654                                 r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 655                                 return false;
 656                         }
 657                 r8712_xmitframe_aggr_1st(pxmitbuf, pxmitframe);
 658                 if (p2ndxmitframe != NULL) {
 659                         u16 total_length;
 660
 661                         total_length = r8712_xmitframe_aggr_next(
 662                                 pxmitbuf, p2ndxmitframe);
 663                         do {
 664                                 p2ndxmitframe = dequeue_xframe_ex(
 665                                         pxmitpriv, phwxmits, hwentry);
 666                                 if (p2ndxmitframe != NULL)
 667                                         total_length =
 668                                                 r8712_xmitframe_aggr_next(
 669                                                         pxmitbuf,
 670                                                         p2ndxmitframe);
 671                                 else
 672                                         break;
 673                         } while (total_length <= 0x1800 &&
 674                                 pxmitbuf->aggr_nr <= AGGR_NR_HIGH_BOUND);
 675                 }
 676                 if (pxmitbuf->aggr_nr > 0)
 677                         r8712_dump_aggr_xframe(pxmitbuf, pxmitframe);
 678
 679 #else
 680
 681                 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
 682                 if (pxmitframe->frame_tag == DATA_FRAMETAG) {
 683                         if (pxmitframe->attrib.priority <= 15)
 684                                 res = r8712_xmitframe_coalesce(padapter,
 685                                         pxmitframe->pkt, pxmitframe);
 686                         /* always return ndis_packet after
 687                          * r8712_xmitframe_coalesce */
 688                         r8712_xmit_complete(padapter, pxmitframe);
 689                 }
 690                 if (res == _SUCCESS)
 691                         dump_xframe(padapter, pxmitframe);
 692                 else
 693                         r8712_free_xmitframe_ex(pxmitpriv, pxmitframe);
 694                 xcnt++;
 695 #endif
 696
 697         } else { /* pxmitframe == NULL && p2ndxmitframe == NULL */
 698                 r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 699                 return false;
 700         }
 701         return true;
 702 }
 703
 704 static void dump_xframe(struct _adapter *padapter,
 705                         struct xmit_frame *pxmitframe)
 706 {
 707         int t, sz, w_sz;
 708         u8 *mem_addr;
 709         u32 ff_hwaddr;
 710         struct pkt_attrib *pattrib = &pxmitframe->attrib;
 711         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 712         struct security_priv *psecuritypriv = &padapter->securitypriv;
 713
 714         if (pxmitframe->attrib.ether_type != 0x0806) {
 715                 if (pxmitframe->attrib.ether_type != 0x888e)
 716                         r8712_issue_addbareq_cmd(padapter, pattrib->priority);
 717         }
 718         mem_addr = pxmitframe->buf_addr;
 719         for (t = 0; t < pattrib->nr_frags; t++) {
 720                 if (t != (pattrib->nr_frags - 1)) {
 721                         sz = pxmitpriv->frag_len;
 722                         sz = sz - 4 - (psecuritypriv->sw_encrypt ? 0 :
 723                              pattrib->icv_len);
 724                         pxmitframe->last[t] = 0;
 725                 } else {
 726                         sz = pattrib->last_txcmdsz;
 727                         pxmitframe->last[t] = 1;
 728                 }
 729                 update_txdesc(pxmitframe, (uint *)mem_addr, sz);
 730                 w_sz = sz + TXDESC_SIZE;
 731                 pxmitframe->mem_addr = mem_addr;
 732                 pxmitframe->bpending[t] = false;
 733                 ff_hwaddr = get_ff_hwaddr(pxmitframe);
 734 #ifdef CONFIG_R8712_TX_AGGR
 735                 r8712_write_port(padapter, RTL8712_DMA_H2CCMD, w_sz,
 736                                 (unsigned char *)pxmitframe);
 737 #else
 738                 r8712_write_port(padapter, ff_hwaddr, w_sz,
 739                            (unsigned char *)pxmitframe);
 740 #endif
 741                 mem_addr += w_sz;
 742                 mem_addr = (u8 *)RND4(((addr_t)(mem_addr)));
 743         }
 744 }
 745
 746 int r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe)
 747 {
 748         int res = _SUCCESS;
 749
 750         res = r8712_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
 751         pxmitframe->pkt = NULL;
 752         if (res == _SUCCESS)
 753                 dump_xframe(padapter, pxmitframe);
 754         return res;
 755 }
 756
 757 int r8712_xmit_enqueue(struct _adapter *padapter, struct xmit_frame *pxmitframe)
 758 {
 759         if (r8712_xmit_classifier(padapter, pxmitframe) == _FAIL) {
 760                 pxmitframe->pkt = NULL;
 761                 return _FAIL;
 762         }
 763         return _SUCCESS;
 764 }