kernel/drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  ******************************************************************************/
  19 #define _USB_OPS_LINUX_C_
  20
  21 #include <drv_types.h>
  22 #include <recv_osdep.h>
  23 #include <rtw_sreset.h>
  24
  25 static void interrupt_handler_8188eu(struct adapter *adapt, u16 pkt_len, u8 *pbuf)
  26 {
  27         struct hal_data_8188e   *haldata = GET_HAL_DATA(adapt);
  28
  29         if (pkt_len != INTERRUPT_MSG_FORMAT_LEN) {
  30                 DBG_88E("%s Invalid interrupt content length (%d)!\n", __func__, pkt_len);
  31                 return;
  32         }
  33
  34         /*  HISR */
  35         memcpy(&(haldata->IntArray[0]), &(pbuf[USB_INTR_CONTENT_HISR_OFFSET]), 4);
  36         memcpy(&(haldata->IntArray[1]), &(pbuf[USB_INTR_CONTENT_HISRE_OFFSET]), 4);
  37
  38         /*  C2H Event */
  39         if (pbuf[0] != 0)
  40                 memcpy(&(haldata->C2hArray[0]), &(pbuf[USB_INTR_CONTENT_C2H_OFFSET]), 16);
  41 }
  42
  43 static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
  44 {
  45         u8      *pbuf;
  46         u8      shift_sz = 0;
  47         u16     pkt_cnt;
  48         u32     pkt_offset, skb_len, alloc_sz;
  49         s32     transfer_len;
  50         struct recv_stat        *prxstat;
  51         struct phy_stat *pphy_status = NULL;
  52         struct sk_buff *pkt_copy = NULL;
  53         struct recv_frame       *precvframe = NULL;
  54         struct rx_pkt_attrib    *pattrib = NULL;
  55         struct hal_data_8188e   *haldata = GET_HAL_DATA(adapt);
  56         struct recv_priv        *precvpriv = &adapt->recvpriv;
  57         struct __queue *pfree_recv_queue = &precvpriv->free_recv_queue;
  58
  59         transfer_len = (s32)pskb->len;
  60         pbuf = pskb->data;
  61
  62         prxstat = (struct recv_stat *)pbuf;
  63         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
  64
  65         do {
  66                 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
  67                          ("recvbuf2recvframe: rxdesc=offsset 0:0x%08x, 4:0x%08x, 8:0x%08x, C:0x%08x\n",
  68                           prxstat->rxdw0, prxstat->rxdw1, prxstat->rxdw2, prxstat->rxdw4));
  69
  70                 prxstat = (struct recv_stat *)pbuf;
  71
  72                 precvframe = rtw_alloc_recvframe(pfree_recv_queue);
  73                 if (precvframe == NULL) {
  74                         RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvbuf2recvframe: precvframe==NULL\n"));
  75                         DBG_88E("%s()-%d: rtw_alloc_recvframe() failed! RX Drop!\n", __func__, __LINE__);
  76                         goto _exit_recvbuf2recvframe;
  77                 }
  78
  79                 INIT_LIST_HEAD(&precvframe->list);
  80                 precvframe->len = 0;
  81
  82                 update_recvframe_attrib_88e(precvframe, prxstat);
  83
  84                 pattrib = &precvframe->attrib;
  85
  86                 if ((pattrib->crc_err) || (pattrib->icv_err)) {
  87                         DBG_88E("%s: RX Warning! crc_err=%d icv_err=%d, skip!\n", __func__, pattrib->crc_err, pattrib->icv_err);
  88
  89                         rtw_free_recvframe(precvframe, pfree_recv_queue);
  90                         goto _exit_recvbuf2recvframe;
  91                 }
  92
  93                 if ((pattrib->physt) && (pattrib->pkt_rpt_type == NORMAL_RX))
  94                         pphy_status = (struct phy_stat *)(pbuf + RXDESC_OFFSET);
  95
  96                 pkt_offset = RXDESC_SIZE + pattrib->drvinfo_sz + pattrib->shift_sz + pattrib->pkt_len;
  97
  98                 if ((pattrib->pkt_len <= 0) || (pkt_offset > transfer_len)) {
  99                         RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recvbuf2recvframe: pkt_len<=0\n"));
 100                         DBG_88E("%s()-%d: RX Warning!,pkt_len<=0 or pkt_offset> transfoer_len\n", __func__, __LINE__);
 101                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 102                         goto _exit_recvbuf2recvframe;
 103                 }
 104
 105                 /*      Modified by Albert 20101213 */
 106                 /*      For 8 bytes IP header alignment. */
 107                 if (pattrib->qos)       /*      Qos data, wireless lan header length is 26 */
 108                         shift_sz = 6;
 109                 else
 110                         shift_sz = 0;
 111
 112                 skb_len = pattrib->pkt_len;
 113
 114                 /*  for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
 115                 /*  modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
 116                 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
 117                         if (skb_len <= 1650)
 118                                 alloc_sz = 1664;
 119                         else
 120                                 alloc_sz = skb_len + 14;
 121                 } else {
 122                         alloc_sz = skb_len;
 123                         /*      6 is for IP header 8 bytes alignment in QoS packet case. */
 124                         /*      8 is for skb->data 4 bytes alignment. */
 125                         alloc_sz += 14;
 126                 }
 127
 128                 pkt_copy = netdev_alloc_skb(adapt->pnetdev, alloc_sz);
 129                 if (pkt_copy) {
 130                         pkt_copy->dev = adapt->pnetdev;
 131                         precvframe->pkt = pkt_copy;
 132                         precvframe->rx_head = pkt_copy->data;
 133                         precvframe->rx_end = pkt_copy->data + alloc_sz;
 134                         skb_reserve(pkt_copy, 8 - ((size_t)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */
 135                         skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
 136                         memcpy(pkt_copy->data, (pbuf + pattrib->drvinfo_sz + RXDESC_SIZE), skb_len);
 137                         precvframe->rx_tail = pkt_copy->data;
 138                         precvframe->rx_data = pkt_copy->data;
 139                 } else {
 140                         if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
 141                                 DBG_88E("recvbuf2recvframe: alloc_skb fail , drop frag frame\n");
 142                                 rtw_free_recvframe(precvframe, pfree_recv_queue);
 143                                 goto _exit_recvbuf2recvframe;
 144                         }
 145                         precvframe->pkt = skb_clone(pskb, GFP_ATOMIC);
 146                         if (precvframe->pkt) {
 147                                 precvframe->rx_tail = pbuf + pattrib->drvinfo_sz + RXDESC_SIZE;
 148                                 precvframe->rx_head = precvframe->rx_tail;
 149                                 precvframe->rx_data = precvframe->rx_tail;
 150                                 precvframe->rx_end =  pbuf + pattrib->drvinfo_sz + RXDESC_SIZE + alloc_sz;
 151                         } else {
 152                                 DBG_88E("recvbuf2recvframe: skb_clone fail\n");
 153                                 rtw_free_recvframe(precvframe, pfree_recv_queue);
 154                                 goto _exit_recvbuf2recvframe;
 155                         }
 156                 }
 157
 158                 recvframe_put(precvframe, skb_len);
 159
 160                 switch (haldata->UsbRxAggMode) {
 161                 case USB_RX_AGG_DMA:
 162                 case USB_RX_AGG_MIX:
 163                         pkt_offset = (u16)round_up(pkt_offset, 128);
 164                         break;
 165                 case USB_RX_AGG_USB:
 166                         pkt_offset = (u16)round_up(pkt_offset, 4);
 167                         break;
 168                 case USB_RX_AGG_DISABLE:
 169                 default:
 170                         break;
 171                 }
 172                 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
 173                         if (pattrib->physt)
 174                                 update_recvframe_phyinfo_88e(precvframe, (struct phy_stat *)pphy_status);
 175                         if (rtw_recv_entry(precvframe) != _SUCCESS) {
 176                                 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 177                                         ("recvbuf2recvframe: rtw_recv_entry(precvframe) != _SUCCESS\n"));
 178                         }
 179                 } else {
 180                         /* enqueue recvframe to txrtp queue */
 181                         if (pattrib->pkt_rpt_type == TX_REPORT1) {
 182                                 /* CCX-TXRPT ack for xmit mgmt frames. */
 183                                 handle_txrpt_ccx_88e(adapt, precvframe->rx_data);
 184                         } else if (pattrib->pkt_rpt_type == TX_REPORT2) {
 185                                 ODM_RA_TxRPT2Handle_8188E(
 186                                                         &haldata->odmpriv,
 187                                                         precvframe->rx_data,
 188                                                         pattrib->pkt_len,
 189                                                         pattrib->MacIDValidEntry[0],
 190                                                         pattrib->MacIDValidEntry[1]
 191                                                         );
 192                         } else if (pattrib->pkt_rpt_type == HIS_REPORT) {
 193                                 interrupt_handler_8188eu(adapt, pattrib->pkt_len, precvframe->rx_data);
 194                         }
 195                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 196                 }
 197                 pkt_cnt--;
 198                 transfer_len -= pkt_offset;
 199                 pbuf += pkt_offset;
 200                 precvframe = NULL;
 201                 pkt_copy = NULL;
 202
 203                 if (transfer_len > 0 && pkt_cnt == 0)
 204                         pkt_cnt = (le32_to_cpu(prxstat->rxdw2)>>16) & 0xff;
 205
 206         } while ((transfer_len > 0) && (pkt_cnt > 0));
 207
 208 _exit_recvbuf2recvframe:
 209
 210         return _SUCCESS;
 211 }
 212
 213 unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
 214 {
 215         unsigned int pipe = 0, ep_num = 0;
 216         struct usb_device *pusbd = pdvobj->pusbdev;
 217
 218         if (addr == RECV_BULK_IN_ADDR) {
 219                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
 220         } else if (addr == RECV_INT_IN_ADDR) {
 221                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[1]);
 222         } else if (addr < HW_QUEUE_ENTRY) {
 223                 ep_num = pdvobj->Queue2Pipe[addr];
 224                 pipe = usb_sndbulkpipe(pusbd, ep_num);
 225         }
 226
 227         return pipe;
 228 }
 229
 230 static int usbctrl_vendorreq(struct adapter *adapt, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
 231 {
 232         struct dvobj_priv  *dvobjpriv = adapter_to_dvobj(adapt);
 233         struct usb_device *udev = dvobjpriv->pusbdev;
 234         unsigned int pipe;
 235         int status = 0;
 236         u8 reqtype;
 237         u8 *pIo_buf;
 238         int vendorreq_times = 0;
 239
 240         if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) {
 241                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usbctrl_vendorreq:(adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
 242                 status = -EPERM;
 243                 goto exit;
 244         }
 245
 246         if (len > MAX_VENDOR_REQ_CMD_SIZE) {
 247                 DBG_88E("[%s] Buffer len error ,vendor request failed\n", __func__);
 248                 status = -EINVAL;
 249                 goto exit;
 250         }
 251
 252         if (mutex_lock_interruptible(&dvobjpriv->usb_vendor_req_mutex)) {
 253                 status = -ERESTARTSYS;
 254                 goto exit;
 255         }
 256
 257         /*  Acquire IO memory for vendorreq */
 258         pIo_buf = dvobjpriv->usb_vendor_req_buf;
 259
 260         if (pIo_buf == NULL) {
 261                 DBG_88E("[%s] pIo_buf == NULL\n", __func__);
 262                 status = -ENOMEM;
 263                 goto release_mutex;
 264         }
 265
 266         while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
 267                 memset(pIo_buf, 0, len);
 268
 269                 if (requesttype == 0x01) {
 270                         pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
 271                         reqtype =  REALTEK_USB_VENQT_READ;
 272                 } else {
 273                         pipe = usb_sndctrlpipe(udev, 0);/* write_out */
 274                         reqtype =  REALTEK_USB_VENQT_WRITE;
 275                         memcpy(pIo_buf, pdata, len);
 276                 }
 277
 278                 status = usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 279
 280                 if (status == len) {   /*  Success this control transfer. */
 281                         if (requesttype == 0x01)
 282                                 memcpy(pdata, pIo_buf,  len);
 283                 } else { /*  error cases */
 284                         DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
 285                                 value, (requesttype == 0x01) ? "read" : "write",
 286                                 len, status, *(u32 *)pdata, vendorreq_times);
 287
 288                         if (status < 0) {
 289                                 if (status == (-ESHUTDOWN) || status == -ENODEV) {
 290                                         adapt->bSurpriseRemoved = true;
 291                                 } else {
 292                                         struct hal_data_8188e   *haldata = GET_HAL_DATA(adapt);
 293                                         haldata->srestpriv.Wifi_Error_Status = USB_VEN_REQ_CMD_FAIL;
 294                                 }
 295                         } else { /*  status != len && status >= 0 */
 296                                 if (status > 0) {
 297                                         if (requesttype == 0x01) {
 298                                                 /*  For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
 299                                                 memcpy(pdata, pIo_buf,  len);
 300                                         }
 301                                 }
 302                         }
 303
 304                 }
 305
 306                 /*  firmware download is checksumed, don't retry */
 307                 if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
 308                         break;
 309         }
 310 release_mutex:
 311         mutex_unlock(&dvobjpriv->usb_vendor_req_mutex);
 312 exit:
 313         return status;
 314 }
 315
 316 u8 usb_read8(struct adapter *adapter, u32 addr)
 317 {
 318         u8 request;
 319         u8 requesttype;
 320         u16 wvalue;
 321         u16 index;
 322         u16 len;
 323         u8 data = 0;
 324
 325
 326         request = 0x05;
 327         requesttype = 0x01;/* read_in */
 328         index = 0;/* n/a */
 329
 330         wvalue = (u16)(addr&0x0000ffff);
 331         len = 1;
 332
 333         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 334
 335
 336         return data;
 337
 338 }
 339
 340 u16 usb_read16(struct adapter *adapter, u32 addr)
 341 {
 342         u8 request;
 343         u8 requesttype;
 344         u16 wvalue;
 345         u16 index;
 346         u16 len;
 347         __le32 data;
 348
 349         request = 0x05;
 350         requesttype = 0x01;/* read_in */
 351         index = 0;/* n/a */
 352         wvalue = (u16)(addr&0x0000ffff);
 353         len = 2;
 354         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 355
 356         return (u16)(le32_to_cpu(data)&0xffff);
 357 }
 358
 359 u32 usb_read32(struct adapter *adapter, u32 addr)
 360 {
 361         u8 request;
 362         u8 requesttype;
 363         u16 wvalue;
 364         u16 index;
 365         u16 len;
 366         __le32 data;
 367
 368
 369         request = 0x05;
 370         requesttype = 0x01;/* read_in */
 371         index = 0;/* n/a */
 372
 373         wvalue = (u16)(addr&0x0000ffff);
 374         len = 4;
 375
 376         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 377
 378
 379         return le32_to_cpu(data);
 380 }
 381
 382 static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 383 {
 384         struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
 385         struct adapter  *adapt = (struct adapter *)precvbuf->adapter;
 386         struct recv_priv *precvpriv = &adapt->recvpriv;
 387
 388         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete!!!\n"));
 389
 390         precvpriv->rx_pending_cnt--;
 391
 392         if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) {
 393                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 394                          ("usb_read_port_complete:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
 395                          adapt->bDriverStopped, adapt->bSurpriseRemoved));
 396
 397                 precvbuf->reuse = true;
 398                 DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 399                         __func__, adapt->bDriverStopped,
 400                         adapt->bSurpriseRemoved, adapt->bReadPortCancel);
 401                 return;
 402         }
 403
 404         if (purb->status == 0) { /* SUCCESS */
 405                 if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
 406                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 407                                  ("usb_read_port_complete: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n"));
 408                         precvbuf->reuse = true;
 409                         usb_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
 410                         DBG_88E("%s()-%d: RX Warning!\n", __func__, __LINE__);
 411                 } else {
 412                         skb_put(precvbuf->pskb, purb->actual_length);
 413                         skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
 414
 415                         if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
 416                                 tasklet_schedule(&precvpriv->recv_tasklet);
 417
 418                         precvbuf->pskb = NULL;
 419                         precvbuf->reuse = false;
 420                         usb_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
 421                 }
 422         } else {
 423                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete : purb->status(%d) != 0\n", purb->status));
 424
 425                 DBG_88E("###=> usb_read_port_complete => urb status(%d)\n", purb->status);
 426                 skb_put(precvbuf->pskb, purb->actual_length);
 427                 precvbuf->pskb = NULL;
 428
 429                 switch (purb->status) {
 430                 case -EINVAL:
 431                 case -EPIPE:
 432                 case -ENODEV:
 433                 case -ESHUTDOWN:
 434                         adapt->bSurpriseRemoved = true;
 435                 case -ENOENT:
 436                         adapt->bDriverStopped = true;
 437                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bDriverStopped=true\n"));
 438                         break;
 439                 case -EPROTO:
 440                 case -EOVERFLOW:
 441                         {
 442                                 struct hal_data_8188e   *haldata = GET_HAL_DATA(adapt);
 443                                 haldata->srestpriv.Wifi_Error_Status = USB_READ_PORT_FAIL;
 444                         }
 445                         precvbuf->reuse = true;
 446                         usb_read_port(adapt, precvpriv->ff_hwaddr, 0, (unsigned char *)precvbuf);
 447                         break;
 448                 case -EINPROGRESS:
 449                         DBG_88E("ERROR: URB IS IN PROGRESS!\n");
 450                         break;
 451                 default:
 452                         break;
 453                 }
 454         }
 455 }
 456
 457 u32 usb_read_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *rmem)
 458 {
 459         struct urb *purb = NULL;
 460         struct recv_buf *precvbuf = (struct recv_buf *)rmem;
 461         struct dvobj_priv       *pdvobj = adapter_to_dvobj(adapter);
 462         struct recv_priv        *precvpriv = &adapter->recvpriv;
 463         struct usb_device       *pusbd = pdvobj->pusbdev;
 464         int err;
 465         unsigned int pipe;
 466         size_t tmpaddr = 0;
 467         size_t alignment = 0;
 468         u32 ret = _SUCCESS;
 469
 470
 471         if (adapter->bDriverStopped || adapter->bSurpriseRemoved ||
 472             adapter->pwrctrlpriv.pnp_bstop_trx) {
 473                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 474                          ("usb_read_port:(adapt->bDriverStopped ||adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
 475                 return _FAIL;
 476         }
 477
 478         if (!precvbuf) {
 479                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 480                          ("usb_read_port:precvbuf==NULL\n"));
 481                 return _FAIL;
 482         }
 483
 484         if ((!precvbuf->reuse) || (precvbuf->pskb == NULL)) {
 485                 precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
 486                 if (NULL != precvbuf->pskb)
 487                         precvbuf->reuse = true;
 488         }
 489
 490         /* re-assign for linux based on skb */
 491         if ((!precvbuf->reuse) || (precvbuf->pskb == NULL)) {
 492                 precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ);
 493                 if (precvbuf->pskb == NULL) {
 494                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("init_recvbuf(): alloc_skb fail!\n"));
 495                         DBG_88E("#### usb_read_port() alloc_skb fail!#####\n");
 496                         return _FAIL;
 497                 }
 498
 499                 tmpaddr = (size_t)precvbuf->pskb->data;
 500                 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
 501                 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
 502         } else { /* reuse skb */
 503                 precvbuf->reuse = false;
 504         }
 505
 506         precvpriv->rx_pending_cnt++;
 507
 508         purb = precvbuf->purb;
 509
 510         /* translate DMA FIFO addr to pipehandle */
 511         pipe = ffaddr2pipehdl(pdvobj, addr);
 512
 513         usb_fill_bulk_urb(purb, pusbd, pipe,
 514                           precvbuf->pskb->data,
 515                           MAX_RECVBUF_SZ,
 516                           usb_read_port_complete,
 517                           precvbuf);/* context is precvbuf */
 518
 519         err = usb_submit_urb(purb, GFP_ATOMIC);
 520         if ((err) && (err != (-EPERM))) {
 521                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 522                          ("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x",
 523                          err, purb->status));
 524                 DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",
 525                         err, purb->status);
 526                 ret = _FAIL;
 527         }
 528
 529         return ret;
 530 }
 531
 532 void usb_read_port_cancel(struct adapter *padapter)
 533 {
 534         int i;
 535         struct recv_buf *precvbuf;
 536
 537         precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
 538
 539         DBG_88E("%s\n", __func__);
 540
 541         padapter->bReadPortCancel = true;
 542
 543         for (i = 0; i < NR_RECVBUFF; i++) {
 544                 precvbuf->reuse = true;
 545                 if (precvbuf->purb)
 546                         usb_kill_urb(precvbuf->purb);
 547                 precvbuf++;
 548         }
 549 }
 550
 551 int usb_write8(struct adapter *adapter, u32 addr, u8 val)
 552 {
 553         u8 request;
 554         u8 requesttype;
 555         u16 wvalue;
 556         u16 index;
 557         u16 len;
 558         u8 data;
 559
 560         request = 0x05;
 561         requesttype = 0x00;/* write_out */
 562         index = 0;/* n/a */
 563         wvalue = (u16)(addr&0x0000ffff);
 564         len = 1;
 565         data = val;
 566         return usbctrl_vendorreq(adapter, request, wvalue,
 567                                  index, &data, len, requesttype);
 568 }
 569
 570 int usb_write16(struct adapter *adapter, u32 addr, u16 val)
 571 {
 572         u8 request;
 573         u8 requesttype;
 574         u16 wvalue;
 575         u16 index;
 576         u16 len;
 577         __le32 data;
 578
 579
 580         request = 0x05;
 581         requesttype = 0x00;/* write_out */
 582         index = 0;/* n/a */
 583
 584         wvalue = (u16)(addr&0x0000ffff);
 585         len = 2;
 586
 587         data = cpu_to_le32(val & 0x0000ffff);
 588
 589         return usbctrl_vendorreq(adapter, request, wvalue,
 590                                  index, &data, len, requesttype);
 591
 592
 593 }
 594
 595 int usb_write32(struct adapter *adapter, u32 addr, u32 val)
 596 {
 597         u8 request;
 598         u8 requesttype;
 599         u16 wvalue;
 600         u16 index;
 601         u16 len;
 602         __le32 data;
 603
 604
 605         request = 0x05;
 606         requesttype = 0x00;/* write_out */
 607         index = 0;/* n/a */
 608
 609         wvalue = (u16)(addr&0x0000ffff);
 610         len = 4;
 611         data = cpu_to_le32(val);
 612
 613         return usbctrl_vendorreq(adapter, request, wvalue,
 614                                  index, &data, len, requesttype);
 615
 616
 617 }
 618
 619 static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
 620 {
 621         struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
 622         struct adapter  *padapter = pxmitbuf->padapter;
 623         struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
 624
 625         switch (pxmitbuf->flags) {
 626         case VO_QUEUE_INX:
 627                 pxmitpriv->voq_cnt--;
 628                 break;
 629         case VI_QUEUE_INX:
 630                 pxmitpriv->viq_cnt--;
 631                 break;
 632         case BE_QUEUE_INX:
 633                 pxmitpriv->beq_cnt--;
 634                 break;
 635         case BK_QUEUE_INX:
 636                 pxmitpriv->bkq_cnt--;
 637                 break;
 638         case HIGH_QUEUE_INX:
 639 #ifdef CONFIG_88EU_AP_MODE
 640                 rtw_chk_hi_queue_cmd(padapter);
 641 #endif
 642                 break;
 643         default:
 644                 break;
 645         }
 646
 647         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 648             padapter->bWritePortCancel) {
 649                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 650                          ("usb_write_port_complete:bDriverStopped(%d) OR bSurpriseRemoved(%d)",
 651                          padapter->bDriverStopped, padapter->bSurpriseRemoved));
 652                 DBG_88E("%s(): TX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bWritePortCancel(%d) pxmitbuf->ext_tag(%x)\n",
 653                         __func__, padapter->bDriverStopped,
 654                         padapter->bSurpriseRemoved, padapter->bReadPortCancel,
 655                         pxmitbuf->ext_tag);
 656
 657                 goto check_completion;
 658         }
 659
 660         if (purb->status) {
 661                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete : purb->status(%d) != 0\n", purb->status));
 662                 DBG_88E("###=> urb_write_port_complete status(%d)\n", purb->status);
 663                 if ((purb->status == -EPIPE) || (purb->status == -EPROTO)) {
 664                         sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
 665                 } else if (purb->status == -EINPROGRESS) {
 666                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete: EINPROGESS\n"));
 667                         goto check_completion;
 668                 } else if (purb->status == -ENOENT) {
 669                         DBG_88E("%s: -ENOENT\n", __func__);
 670                         goto check_completion;
 671                 } else if (purb->status == -ECONNRESET) {
 672                         DBG_88E("%s: -ECONNRESET\n", __func__);
 673                         goto check_completion;
 674                 } else if (purb->status == -ESHUTDOWN) {
 675                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete: ESHUTDOWN\n"));
 676                         padapter->bDriverStopped = true;
 677                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete:bDriverStopped = true\n"));
 678                         goto check_completion;
 679                 } else {
 680                         padapter->bSurpriseRemoved = true;
 681                         DBG_88E("bSurpriseRemoved = true\n");
 682                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete:bSurpriseRemoved = true\n"));
 683
 684                         goto check_completion;
 685                 }
 686         }
 687
 688 check_completion:
 689         rtw_sctx_done_err(&pxmitbuf->sctx,
 690                           purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
 691                           RTW_SCTX_DONE_SUCCESS);
 692
 693         rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 694
 695         tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
 696 }
 697
 698 u32 usb_write_port(struct adapter *padapter, u32 addr, u32 cnt, u8 *wmem)
 699 {
 700         unsigned long irqL;
 701         unsigned int pipe;
 702         int status;
 703         u32 ret = _FAIL;
 704         struct urb *purb = NULL;
 705         struct dvobj_priv       *pdvobj = adapter_to_dvobj(padapter);
 706         struct xmit_priv        *pxmitpriv = &padapter->xmitpriv;
 707         struct xmit_buf *pxmitbuf = (struct xmit_buf *)wmem;
 708         struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
 709         struct usb_device *pusbd = pdvobj->pusbdev;
 710
 711
 712         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("+usb_write_port\n"));
 713
 714         if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
 715             (padapter->pwrctrlpriv.pnp_bstop_trx)) {
 716                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 717                          ("usb_write_port:( padapter->bDriverStopped ||padapter->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
 718                 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
 719                 goto exit;
 720         }
 721
 722         spin_lock_irqsave(&pxmitpriv->lock, irqL);
 723
 724         switch (addr) {
 725         case VO_QUEUE_INX:
 726                 pxmitpriv->voq_cnt++;
 727                 pxmitbuf->flags = VO_QUEUE_INX;
 728                 break;
 729         case VI_QUEUE_INX:
 730                 pxmitpriv->viq_cnt++;
 731                 pxmitbuf->flags = VI_QUEUE_INX;
 732                 break;
 733         case BE_QUEUE_INX:
 734                 pxmitpriv->beq_cnt++;
 735                 pxmitbuf->flags = BE_QUEUE_INX;
 736                 break;
 737         case BK_QUEUE_INX:
 738                 pxmitpriv->bkq_cnt++;
 739                 pxmitbuf->flags = BK_QUEUE_INX;
 740                 break;
 741         case HIGH_QUEUE_INX:
 742                 pxmitbuf->flags = HIGH_QUEUE_INX;
 743                 break;
 744         default:
 745                 pxmitbuf->flags = MGT_QUEUE_INX;
 746                 break;
 747         }
 748
 749         spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 750
 751         purb    = pxmitbuf->pxmit_urb[0];
 752
 753         /* translate DMA FIFO addr to pipehandle */
 754         pipe = ffaddr2pipehdl(pdvobj, addr);
 755
 756         usb_fill_bulk_urb(purb, pusbd, pipe,
 757                           pxmitframe->buf_addr, /*  pxmitbuf->pbuf */
 758                           cnt,
 759                           usb_write_port_complete,
 760                           pxmitbuf);/* context is pxmitbuf */
 761
 762         status = usb_submit_urb(purb, GFP_ATOMIC);
 763         if (status) {
 764                 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 765                 DBG_88E("usb_write_port, status =%d\n", status);
 766                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port(): usb_submit_urb, status =%x\n", status));
 767
 768                 switch (status) {
 769                 case -ENODEV:
 770                         padapter->bDriverStopped = true;
 771                         break;
 772                 default:
 773                         break;
 774                 }
 775                 goto exit;
 776         }
 777
 778         ret = _SUCCESS;
 779
 780 /*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
 781
 782         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("-usb_write_port\n"));
 783
 784 exit:
 785         if (ret != _SUCCESS)
 786                 rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 787         return ret;
 788 }
 789
 790 void usb_write_port_cancel(struct adapter *padapter)
 791 {
 792         int i, j;
 793         struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
 794
 795         DBG_88E("%s\n", __func__);
 796
 797         padapter->bWritePortCancel = true;
 798
 799         for (i = 0; i < NR_XMITBUFF; i++) {
 800                 for (j = 0; j < 8; j++) {
 801                         if (pxmitbuf->pxmit_urb[j])
 802                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 803                 }
 804                 pxmitbuf++;
 805         }
 806
 807         pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
 808         for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
 809                 for (j = 0; j < 8; j++) {
 810                         if (pxmitbuf->pxmit_urb[j])
 811                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 812                 }
 813                 pxmitbuf++;
 814         }
 815 }
 816
 817 void rtl8188eu_recv_tasklet(void *priv)
 818 {
 819         struct sk_buff *pskb;
 820         struct adapter *adapt = priv;
 821         struct recv_priv *precvpriv = &adapt->recvpriv;
 822
 823         while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
 824                 if ((adapt->bDriverStopped) || (adapt->bSurpriseRemoved)) {
 825                         DBG_88E("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
 826                         dev_kfree_skb_any(pskb);
 827                         break;
 828                 }
 829                 recvbuf2recvframe(adapt, pskb);
 830                 skb_reset_tail_pointer(pskb);
 831                 pskb->len = 0;
 832                 skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
 833         }
 834 }
 835
 836 void rtl8188eu_xmit_tasklet(void *priv)
 837 {
 838         int ret = false;
 839         struct adapter *adapt = priv;
 840         struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
 841
 842         if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))
 843                 return;
 844
 845         while (1) {
 846                 if ((adapt->bDriverStopped) ||
 847                     (adapt->bSurpriseRemoved) ||
 848                     (adapt->bWritePortCancel)) {
 849                         DBG_88E("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
 850                         break;
 851                 }
 852
 853                 ret = rtl8188eu_xmitframe_complete(adapt, pxmitpriv, NULL);
 854
 855                 if (!ret)
 856                         break;
 857         }
 858 }