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                 for (i = 0; i < padding_sz; i++)
 328                         *(pxmitframe->buf_addr+TXDESC_SIZE+last_txcmdsz+i) = 0;
 329         }
 330         /* Add the new mpdu's length */
 331         ptx_desc->txdw0 = cpu_to_le32((ptx_desc->txdw0&0xffff0000) |
 332                 ((ptx_desc->txdw0&0x0000ffff)+
 333                         ((TXDESC_SIZE+last_txcmdsz+padding_sz)&0x0000ffff)));
 334
 335         return _SUCCESS;
 336 }
 337
 338
 339 u8 r8712_xmitframe_aggr_1st(struct xmit_buf *pxmitbuf,
 340                         struct xmit_frame *pxmitframe)
 341 {
 342         /* linux complete context doesnt need to protect */
 343         pxmitframe->pxmitbuf = pxmitbuf;
 344         pxmitbuf->priv_data = pxmitframe;
 345         pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
 346         /* buffer addr assoc */
 347         pxmitframe->buf_addr = pxmitbuf->pbuf+TXDESC_SIZE+CMD_HDR_SZ;
 348         /*RTL8712_DMA_H2CCMD */
 349         r8712_construct_txaggr_cmd_desc(pxmitbuf);
 350         r8712_construct_txaggr_cmd_hdr(pxmitbuf);
 351         if (r8712_append_mpdu_unit(pxmitbuf, pxmitframe) == _SUCCESS)
 352                 pxmitbuf->aggr_nr = 1;
 353
 354         return _SUCCESS;
 355 }
 356
 357 u16 r8712_xmitframe_aggr_next(struct xmit_buf *pxmitbuf,
 358                         struct xmit_frame *pxmitframe)
 359 {
 360         pxmitframe->pxmitbuf = pxmitbuf;
 361         pxmitbuf->priv_data = pxmitframe;
 362         pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
 363         /* buffer addr assoc */
 364         pxmitframe->buf_addr = pxmitbuf->pbuf + TXDESC_SIZE +
 365                 (((struct tx_desc *)pxmitbuf->pbuf)->txdw0 & 0x0000ffff);
 366         if (r8712_append_mpdu_unit(pxmitbuf, pxmitframe) == _SUCCESS) {
 367                 r8712_free_xmitframe_ex(&pxmitframe->padapter->xmitpriv,
 368                                         pxmitframe);
 369                 pxmitbuf->aggr_nr++;
 370         }
 371
 372         return TXDESC_SIZE +
 373                 (((struct tx_desc *)pxmitbuf->pbuf)->txdw0 & 0x0000ffff);
 374 }
 375
 376 u8 r8712_dump_aggr_xframe(struct xmit_buf *pxmitbuf,
 377                         struct xmit_frame *pxmitframe)
 378 {
 379         struct _adapter *padapter = pxmitframe->padapter;
 380         struct dvobj_priv *pdvobj = (struct dvobj_priv *) &padapter->dvobjpriv;
 381         struct tx_desc *ptxdesc = (struct tx_desc *)pxmitbuf->pbuf;
 382         struct cmd_hdr *pcmd_hdr = (struct cmd_hdr *)
 383                 (pxmitbuf->pbuf + TXDESC_SIZE);
 384         u16 total_length = (u16) (ptxdesc->txdw0 & 0xffff);
 385
 386         /* use 1st xmitframe as media */
 387         xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
 388         pcmd_hdr->cmd_dw0 = cpu_to_le32(((total_length-CMD_HDR_SZ)&0x0000ffff)|
 389                                         (pcmd_hdr->cmd_dw0&0xffff0000));
 390
 391         /* urb length in cmd_dw1 */
 392         pcmd_hdr->cmd_dw1 = cpu_to_le32((pxmitbuf->aggr_nr & 0xff)|
 393                                         ((total_length+TXDESC_SIZE) << 16));
 394         pxmitframe->last[0] = 1;
 395         pxmitframe->bpending[0] = false;
 396         pxmitframe->mem_addr = pxmitbuf->pbuf;
 397
 398         if ((pdvobj->ishighspeed && ((total_length+TXDESC_SIZE)%0x200) == 0) ||
 399                 ((!pdvobj->ishighspeed &&
 400                         ((total_length+TXDESC_SIZE)%0x40) == 0))) {
 401                 ptxdesc->txdw0 |= cpu_to_le32
 402                         (((TXDESC_SIZE+OFFSET_SZ+8)<<OFFSET_SHT)&0x00ff0000);
 403                 /*32 bytes for TX Desc + 8 bytes pending*/
 404         } else {
 405                 ptxdesc->txdw0 |= cpu_to_le32
 406                         (((TXDESC_SIZE+OFFSET_SZ)<<OFFSET_SHT)&0x00ff0000);
 407                 /*default = 32 bytes for TX Desc*/
 408         }
 409         r8712_write_port(pxmitframe->padapter, RTL8712_DMA_H2CCMD,
 410                         total_length+TXDESC_SIZE, (u8 *)pxmitframe);
 411
 412         return _SUCCESS;
 413 }
 414
 415 #endif
 416
 417 static void update_txdesc(struct xmit_frame *pxmitframe, uint *pmem, int sz)
 418 {
 419         uint qsel;
 420         struct _adapter *padapter = pxmitframe->padapter;
 421         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 422         struct qos_priv *pqospriv = &pmlmepriv->qospriv;
 423         struct security_priv *psecuritypriv = &padapter->securitypriv;
 424         struct pkt_attrib *pattrib = &pxmitframe->attrib;
 425         struct tx_desc *ptxdesc = (struct tx_desc *)pmem;
 426         struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
 427 #ifdef CONFIG_R8712_TX_AGGR
 428         struct cmd_priv *pcmdpriv = (struct cmd_priv *)&padapter->cmdpriv;
 429 #endif
 430         u8 blnSetTxDescOffset;
 431         sint bmcst = IS_MCAST(pattrib->ra);
 432         struct ht_priv *phtpriv = &pmlmepriv->htpriv;
 433         struct tx_desc txdesc_mp;
 434
 435         memcpy(&txdesc_mp, ptxdesc, sizeof(struct tx_desc));
 436         memset(ptxdesc, 0, sizeof(struct tx_desc));
 437         /* offset 0 */
 438         ptxdesc->txdw0 |= cpu_to_le32(sz&0x0000ffff);
 439         if (pdvobj->ishighspeed) {
 440                 if (((sz + TXDESC_SIZE) % 512) == 0)
 441                         blnSetTxDescOffset = 1;
 442                 else
 443                         blnSetTxDescOffset = 0;
 444         } else {
 445                 if (((sz + TXDESC_SIZE) % 64) == 0)
 446                         blnSetTxDescOffset = 1;
 447                 else
 448                         blnSetTxDescOffset = 0;
 449         }
 450         if (blnSetTxDescOffset) {
 451                 /* 32 bytes for TX Desc + 8 bytes pending */
 452                 ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ + 8) <<
 453                               OFFSET_SHT) & 0x00ff0000);
 454         } else {
 455                 /* default = 32 bytes for TX Desc */
 456                 ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ) <<
 457                                   OFFSET_SHT) & 0x00ff0000);
 458         }
 459         ptxdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
 460         if (pxmitframe->frame_tag == DATA_FRAMETAG) {
 461                 /* offset 4 */
 462                 ptxdesc->txdw1 |= cpu_to_le32((pattrib->mac_id)&0x1f);
 463
 464 #ifdef CONFIG_R8712_TX_AGGR
 465                 /* dirty workaround, need to check if it is aggr cmd. */
 466                 if ((u8 *)pmem != (u8 *)pxmitframe->pxmitbuf->pbuf) {
 467                         ptxdesc->txdw0 |= cpu_to_le32
 468                                 ((0x3 << TYPE_SHT)&TYPE_MSK);
 469                         qsel = (uint)(pattrib->qsel & 0x0000001f);
 470                         if (qsel == 2)
 471                                 qsel = 0;
 472                         ptxdesc->txdw1 |= cpu_to_le32
 473                                 ((qsel << QSEL_SHT) & 0x00001f00);
 474                         ptxdesc->txdw2 = cpu_to_le32
 475                                 ((qsel << RTS_RC_SHT)&0x001f0000);
 476                         ptxdesc->txdw6 |= cpu_to_le32
 477                                 ((0x5 << RSVD6_SHT)&RSVD6_MSK);
 478                 } else {
 479                         ptxdesc->txdw0 |= cpu_to_le32
 480                                 ((0x3 << TYPE_SHT)&TYPE_MSK);
 481                         ptxdesc->txdw1 |= cpu_to_le32
 482                                 ((0x13 << QSEL_SHT) & 0x00001f00);
 483                         qsel = (uint)(pattrib->qsel & 0x0000001f);
 484                         if (qsel == 2)
 485                                 qsel = 0;
 486                         ptxdesc->txdw2 = cpu_to_le32
 487                                 ((qsel << RTS_RC_SHT)&0x0001f000);
 488                         ptxdesc->txdw7 |= cpu_to_le32
 489                                 (pcmdpriv->cmd_seq << 24);
 490                         pcmdpriv->cmd_seq++;
 491                 }
 492                 pattrib->qsel = 0x13;
 493 #else
 494                 qsel = (uint)(pattrib->qsel & 0x0000001f);
 495                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 496 #endif
 497                 if (!pqospriv->qos_option)
 498                         ptxdesc->txdw1 |= cpu_to_le32(BIT(16));/*Non-QoS*/
 499                 if ((pattrib->encrypt > 0) && !pattrib->bswenc) {
 500                         switch (pattrib->encrypt) {     /*SEC_TYPE*/
 501                         case _WEP40_:
 502                         case _WEP104_:
 503                                 ptxdesc->txdw1 |= cpu_to_le32((0x01 << 22) &
 504                                                   0x00c00000);
 505                                 /*KEY_ID when WEP is used;*/
 506                                 ptxdesc->txdw1 |= cpu_to_le32((psecuritypriv->
 507                                                   PrivacyKeyIndex << 17) &
 508                                                   0x00060000);
 509                                 break;
 510                         case _TKIP_:
 511                         case _TKIP_WTMIC_:
 512                                 ptxdesc->txdw1 |= cpu_to_le32((0x02 << 22) &
 513                                                   0x00c00000);
 514                                 break;
 515                         case _AES_:
 516                                 ptxdesc->txdw1 |= cpu_to_le32((0x03 << 22) &
 517                                                   0x00c00000);
 518                                 break;
 519                         case _NO_PRIVACY_:
 520                         default:
 521                                 break;
 522                         }
 523                 }
 524                 /*offset 8*/
 525                 if (bmcst)
 526                         ptxdesc->txdw2 |= cpu_to_le32(BMC);
 527
 528                 /*offset 12*/
 529                 /* f/w will increase the seqnum by itself, driver pass the
 530                  * correct priority to fw
 531                  * fw will check the correct priority for increasing the
 532                  * seqnum per tid. about usb using 4-endpoint, qsel points out
 533                  * the correct mapping between AC&Endpoint,
 534                  * the purpose is that correct mapping lets the MAC release
 535                  * the AC Queue list correctly. */
 536                 ptxdesc->txdw3 = cpu_to_le32((pattrib->priority << SEQ_SHT) &
 537                                  0x0fff0000);
 538                 if ((pattrib->ether_type != 0x888e) &&
 539                     (pattrib->ether_type != 0x0806) &&
 540                     (pattrib->dhcp_pkt != 1)) {
 541                         /*Not EAP & ARP type data packet*/
 542                         if (phtpriv->ht_option == 1) { /*B/G/N Mode*/
 543                                 if (phtpriv->ampdu_enable != true)
 544                                         ptxdesc->txdw2 |= cpu_to_le32(BK);
 545                         }
 546                 } else {
 547                         /* EAP data packet and ARP packet.
 548                          * Use the 1M data rate to send the EAP/ARP packet.
 549                          * This will maybe make the handshake smooth.
 550                          */
 551                         /*driver uses data rate*/
 552                         ptxdesc->txdw4 = cpu_to_le32(0x80000000);
 553                         ptxdesc->txdw5 = cpu_to_le32(0x001f8000);/*1M*/
 554                 }
 555                 if (pattrib->pctrl == 1) { /* mp tx packets */
 556                         struct tx_desc *ptxdesc_mp;
 557                         ptxdesc_mp = &txdesc_mp;
 558                         /* offset 8 */
 559                         ptxdesc->txdw2 = cpu_to_le32(ptxdesc_mp->txdw2);
 560                         if (bmcst)
 561                                 ptxdesc->txdw2 |= cpu_to_le32(BMC);
 562                         ptxdesc->txdw2 |= cpu_to_le32(BK);
 563                         /* offset 16 */
 564                         ptxdesc->txdw4 = cpu_to_le32(ptxdesc_mp->txdw4);
 565                         /* offset 20 */
 566                         ptxdesc->txdw5 = cpu_to_le32(ptxdesc_mp->txdw5);
 567                         pattrib->pctrl = 0;/* reset to zero; */
 568                 }
 569         } else if (pxmitframe->frame_tag == MGNT_FRAMETAG) {
 570                 /* offset 4 */
 571                 ptxdesc->txdw1 |= (0x05) & 0x1f;/*CAM_ID(MAC_ID), default=5;*/
 572                 qsel = (uint)(pattrib->qsel & 0x0000001f);
 573                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 574                 ptxdesc->txdw1 |= cpu_to_le32(BIT(16));/* Non-QoS */
 575                 /* offset 8 */
 576                 if (bmcst)
 577                         ptxdesc->txdw2 |= cpu_to_le32(BMC);
 578                 /* offset 12 */
 579                 /* f/w will increase the seqnum by itself, driver pass the
 580                  * correct priority to fw
 581                  * fw will check the correct priority for increasing the seqnum
 582                  * per tid. about usb using 4-endpoint, qsel points out the
 583                  * correct mapping between AC&Endpoint,
 584                  * the purpose is that correct mapping let the MAC releases
 585                  * the AC Queue list correctly. */
 586                 ptxdesc->txdw3 = cpu_to_le32((pattrib->priority << SEQ_SHT) &
 587                                               0x0fff0000);
 588                 /* offset 16 */
 589                 ptxdesc->txdw4 = cpu_to_le32(0x80002040);/*gtest*/
 590                 /* offset 20 */
 591                 ptxdesc->txdw5 = cpu_to_le32(0x001f8000);/* gtest 1M */
 592         } else if (pxmitframe->frame_tag == TXAGG_FRAMETAG) {
 593                 /* offset 4 */
 594                 qsel = 0x13;
 595                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 596         } else {
 597                 /* offset 4 */
 598                 qsel = (uint)(pattrib->priority&0x0000001f);
 599                 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
 600                 /*offset 8*/
 601                 /*offset 12*/
 602                 ptxdesc->txdw3 = cpu_to_le32((pattrib->seqnum << SEQ_SHT) &
 603                                               0x0fff0000);
 604                 /*offset 16*/
 605                 ptxdesc->txdw4 = cpu_to_le32(0x80002040);/*gtest*/
 606                 /*offset 20*/
 607                 ptxdesc->txdw5 = cpu_to_le32(0x001f9600);/*gtest*/
 608         }
 609 }
 610
 611 int r8712_xmitframe_complete(struct _adapter *padapter,
 612                              struct xmit_priv *pxmitpriv,
 613                              struct xmit_buf *pxmitbuf)
 614 {
 615         struct hw_xmit *phwxmits;
 616         sint hwentry;
 617         struct xmit_frame *pxmitframe = NULL;
 618 #ifdef CONFIG_R8712_TX_AGGR
 619         struct xmit_frame *p2ndxmitframe = NULL;
 620 #else
 621         int res = _SUCCESS, xcnt = 0;
 622 #endif
 623
 624         phwxmits = pxmitpriv->hwxmits;
 625         hwentry = pxmitpriv->hwxmit_entry;
 626         if (pxmitbuf == NULL) {
 627                 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
 628                 if (!pxmitbuf)
 629                         return false;
 630 #ifdef CONFIG_R8712_TX_AGGR
 631                 pxmitbuf->aggr_nr = 0;
 632 #endif
 633         }
 634         /* 1st frame dequeued */
 635         pxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits, hwentry);
 636         /* need to remember the 1st frame */
 637         if (pxmitframe != NULL) {
 638
 639 #ifdef CONFIG_R8712_TX_AGGR
 640                 /* 1. dequeue 2nd frame
 641                  * 2. aggr if 2nd xframe is dequeued, else dump directly
 642                  */
 643                 if (AGGR_NR_HIGH_BOUND > 1)
 644                         p2ndxmitframe = dequeue_xframe_ex(pxmitpriv, phwxmits,
 645                                                         hwentry);
 646                 if (pxmitframe->frame_tag != DATA_FRAMETAG) {
 647                         r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 648                         return false;
 649                 }
 650                 if (p2ndxmitframe != NULL)
 651                         if (p2ndxmitframe->frame_tag != DATA_FRAMETAG) {
 652                                 r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 653                                 return false;
 654                         }
 655                 r8712_xmitframe_aggr_1st(pxmitbuf, pxmitframe);
 656                 if (p2ndxmitframe != NULL) {
 657                         u16 total_length;
 658                         total_length = r8712_xmitframe_aggr_next(
 659                                 pxmitbuf, p2ndxmitframe);
 660                         do {
 661                                 p2ndxmitframe = dequeue_xframe_ex(
 662                                         pxmitpriv, phwxmits, hwentry);
 663                                 if (p2ndxmitframe != NULL)
 664                                         total_length =
 665                                                 r8712_xmitframe_aggr_next(
 666                                                         pxmitbuf,
 667                                                         p2ndxmitframe);
 668                                 else
 669                                         break;
 670                         } while (total_length <= 0x1800 &&
 671                                 pxmitbuf->aggr_nr <= AGGR_NR_HIGH_BOUND);
 672                 }
 673                 if (pxmitbuf->aggr_nr > 0)
 674                         r8712_dump_aggr_xframe(pxmitbuf, pxmitframe);
 675
 676 #else
 677
 678                 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
 679                 if (pxmitframe->frame_tag == DATA_FRAMETAG) {
 680                         if (pxmitframe->attrib.priority <= 15)
 681                                 res = r8712_xmitframe_coalesce(padapter,
 682                                         pxmitframe->pkt, pxmitframe);
 683                         /* always return ndis_packet after
 684                          * r8712_xmitframe_coalesce */
 685                         r8712_xmit_complete(padapter, pxmitframe);
 686                 }
 687                 if (res == _SUCCESS)
 688                         dump_xframe(padapter, pxmitframe);
 689                 else
 690                         r8712_free_xmitframe_ex(pxmitpriv, pxmitframe);
 691                 xcnt++;
 692 #endif
 693
 694         } else { /* pxmitframe == NULL && p2ndxmitframe == NULL */
 695                 r8712_free_xmitbuf(pxmitpriv, pxmitbuf);
 696                 return false;
 697         }
 698         return true;
 699 }
 700
 701 static void dump_xframe(struct _adapter *padapter,
 702                         struct xmit_frame *pxmitframe)
 703 {
 704         int t, sz, w_sz;
 705         u8 *mem_addr;
 706         u32 ff_hwaddr;
 707         struct pkt_attrib *pattrib = &pxmitframe->attrib;
 708         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 709         struct security_priv *psecuritypriv = &padapter->securitypriv;
 710
 711         if (pxmitframe->attrib.ether_type != 0x0806) {
 712                 if (pxmitframe->attrib.ether_type != 0x888e)
 713                         r8712_issue_addbareq_cmd(padapter, pattrib->priority);
 714         }
 715         mem_addr = pxmitframe->buf_addr;
 716         for (t = 0; t < pattrib->nr_frags; t++) {
 717                 if (t != (pattrib->nr_frags - 1)) {
 718                         sz = pxmitpriv->frag_len;
 719                         sz = sz - 4 - (psecuritypriv->sw_encrypt ? 0 :
 720                              pattrib->icv_len);
 721                         pxmitframe->last[t] = 0;
 722                 } else {
 723                         sz = pattrib->last_txcmdsz;
 724                         pxmitframe->last[t] = 1;
 725                 }
 726                 update_txdesc(pxmitframe, (uint *)mem_addr, sz);
 727                 w_sz = sz + TXDESC_SIZE;
 728                 pxmitframe->mem_addr = mem_addr;
 729                 pxmitframe->bpending[t] = false;
 730                 ff_hwaddr = get_ff_hwaddr(pxmitframe);
 731 #ifdef CONFIG_R8712_TX_AGGR
 732                 r8712_write_port(padapter, RTL8712_DMA_H2CCMD, w_sz,
 733                                 (unsigned char *)pxmitframe);
 734 #else
 735                 r8712_write_port(padapter, ff_hwaddr, w_sz,
 736                            (unsigned char *)pxmitframe);
 737 #endif
 738                 mem_addr += w_sz;
 739                 mem_addr = (u8 *)RND4(((addr_t)(mem_addr)));
 740         }
 741 }
 742
 743 int r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe)
 744 {
 745         int res = _SUCCESS;
 746
 747         res = r8712_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
 748         pxmitframe->pkt = NULL;
 749         if (res == _SUCCESS)
 750                 dump_xframe(padapter, pxmitframe);
 751         return res;
 752 }
 753
 754 int r8712_xmit_enqueue(struct _adapter *padapter, struct xmit_frame *pxmitframe)
 755 {
 756         if (r8712_xmit_classifier(padapter, pxmitframe) == _FAIL) {
 757                 pxmitframe->pkt = NULL;
 758                 return _FAIL;
 759         }
 760         return _SUCCESS;
 761 }