drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #define _USB_OPS_LINUX_C_
   8
   9 #include <drv_types.h>
  10 #include <recv_osdep.h>
  11 #include <rtw_sreset.h>
  12
  13 static void interrupt_handler_8188eu(struct adapter *adapt, u16 pkt_len, u8 *pbuf)
  14 {
  15         struct hal_data_8188e *haldata = adapt->HalData;
  16
  17         if (pkt_len != INTERRUPT_MSG_FORMAT_LEN) {
  18                 DBG_88E("%s Invalid interrupt content length (%d)!\n", __func__, pkt_len);
  19                 return;
  20         }
  21
  22         /*  HISR */
  23         memcpy(&haldata->IntArray[0], &pbuf[USB_INTR_CONTENT_HISR_OFFSET], 4);
  24         memcpy(&haldata->IntArray[1], &pbuf[USB_INTR_CONTENT_HISRE_OFFSET], 4);
  25
  26         /*  C2H Event */
  27         if (pbuf[0] != 0)
  28                 memcpy(&haldata->C2hArray[0],
  29                        &pbuf[USB_INTR_CONTENT_C2H_OFFSET], 16);
  30 }
  31
  32 static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
  33 {
  34         u8 *pbuf;
  35         u8 shift_sz = 0;
  36         u16 pkt_cnt;
  37         u32 pkt_offset, skb_len, alloc_sz;
  38         s32 transfer_len;
  39         struct recv_stat *prxstat;
  40         struct phy_stat *pphy_status = NULL;
  41         struct sk_buff *pkt_copy = NULL;
  42         struct recv_frame *precvframe = NULL;
  43         struct rx_pkt_attrib *pattrib = NULL;
  44         struct hal_data_8188e *haldata = adapt->HalData;
  45         struct recv_priv *precvpriv = &adapt->recvpriv;
  46         struct __queue *pfree_recv_queue = &precvpriv->free_recv_queue;
  47
  48         transfer_len = (s32)pskb->len;
  49         pbuf = pskb->data;
  50
  51         prxstat = (struct recv_stat *)pbuf;
  52         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
  53
  54         do {
  55                 RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
  56                          ("%s: rxdesc=offsset 0:0x%08x, 4:0x%08x, 8:0x%08x, C:0x%08x\n",
  57                           __func__, prxstat->rxdw0, prxstat->rxdw1,
  58                           prxstat->rxdw2, prxstat->rxdw4));
  59
  60                 prxstat = (struct recv_stat *)pbuf;
  61
  62                 precvframe = rtw_alloc_recvframe(pfree_recv_queue);
  63                 if (!precvframe) {
  64                         RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
  65                                  ("%s: precvframe==NULL\n", __func__));
  66                         DBG_88E("%s()-%d: rtw_alloc_recvframe() failed! RX Drop!\n", __func__, __LINE__);
  67                         goto _exit_recvbuf2recvframe;
  68                 }
  69
  70                 INIT_LIST_HEAD(&precvframe->list);
  71
  72                 update_recvframe_attrib_88e(precvframe, prxstat);
  73
  74                 pattrib = &precvframe->attrib;
  75
  76                 if ((pattrib->crc_err) || (pattrib->icv_err)) {
  77                         DBG_88E("%s: RX Warning! crc_err=%d icv_err=%d, skip!\n", __func__, pattrib->crc_err, pattrib->icv_err);
  78
  79                         rtw_free_recvframe(precvframe, pfree_recv_queue);
  80                         goto _exit_recvbuf2recvframe;
  81                 }
  82
  83                 if ((pattrib->physt) && (pattrib->pkt_rpt_type == NORMAL_RX))
  84                         pphy_status = (struct phy_stat *)(pbuf + RXDESC_OFFSET);
  85
  86                 pkt_offset = RXDESC_SIZE + pattrib->drvinfo_sz + pattrib->shift_sz + pattrib->pkt_len;
  87
  88                 if ((pattrib->pkt_len <= 0) || (pkt_offset > transfer_len)) {
  89                         RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
  90                                  ("%s: pkt_len<=0\n", __func__));
  91                         DBG_88E("%s()-%d: RX Warning!,pkt_len<=0 or pkt_offset> transfer_len\n", __func__, __LINE__);
  92                         rtw_free_recvframe(precvframe, pfree_recv_queue);
  93                         goto _exit_recvbuf2recvframe;
  94                 }
  95
  96                 /*      Modified by Albert 20101213 */
  97                 /*      For 8 bytes IP header alignment. */
  98                 if (pattrib->qos)       /*      Qos data, wireless lan header length is 26 */
  99                         shift_sz = 6;
 100                 else
 101                         shift_sz = 0;
 102
 103                 skb_len = pattrib->pkt_len;
 104
 105                 /*  for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
 106                 /*  modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
 107                 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
 108                         if (skb_len <= 1650)
 109                                 alloc_sz = 1664;
 110                         else
 111                                 alloc_sz = skb_len + 14;
 112                 } else {
 113                         alloc_sz = skb_len;
 114                         /*      6 is for IP header 8 bytes alignment in QoS packet case. */
 115                         /*      8 is for skb->data 4 bytes alignment. */
 116                         alloc_sz += 14;
 117                 }
 118
 119                 pkt_copy = netdev_alloc_skb(adapt->pnetdev, alloc_sz);
 120                 if (pkt_copy) {
 121                         pkt_copy->dev = adapt->pnetdev;
 122                         precvframe->pkt = pkt_copy;
 123                         skb_reserve(pkt_copy, 8 - ((size_t)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */
 124                         skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
 125                         memcpy(pkt_copy->data, (pbuf + pattrib->drvinfo_sz + RXDESC_SIZE), skb_len);
 126                         skb_put(precvframe->pkt, skb_len);
 127                 } else {
 128                         DBG_88E("%s: alloc_skb fail , drop frag frame\n",
 129                                 __func__);
 130                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 131                         goto _exit_recvbuf2recvframe;
 132                 }
 133
 134                 switch (haldata->UsbRxAggMode) {
 135                 case USB_RX_AGG_DMA:
 136                 case USB_RX_AGG_MIX:
 137                         pkt_offset = (u16)round_up(pkt_offset, 128);
 138                         break;
 139                 case USB_RX_AGG_USB:
 140                         pkt_offset = (u16)round_up(pkt_offset, 4);
 141                         break;
 142                 case USB_RX_AGG_DISABLE:
 143                 default:
 144                         break;
 145                 }
 146                 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
 147                         if (pattrib->physt)
 148                                 update_recvframe_phyinfo_88e(precvframe, pphy_status);
 149                         if (rtw_recv_entry(precvframe) != _SUCCESS) {
 150                                 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
 151                                          ("%s: rtw_recv_entry(precvframe) != _SUCCESS\n",
 152                                          __func__));
 153                         }
 154                 } else if (pattrib->pkt_rpt_type == TX_REPORT1) {
 155                         /* CCX-TXRPT ack for xmit mgmt frames. */
 156                         handle_txrpt_ccx_88e(adapt, precvframe->pkt->data);
 157                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 158                 } else if (pattrib->pkt_rpt_type == TX_REPORT2) {
 159                         ODM_RA_TxRPT2Handle_8188E(&haldata->odmpriv,
 160                                                   precvframe->pkt->data,
 161                                                   pattrib->pkt_len,
 162                                                   pattrib->MacIDValidEntry[0],
 163                                                   pattrib->MacIDValidEntry[1]);
 164                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 165                 } else if (pattrib->pkt_rpt_type == HIS_REPORT) {
 166                         interrupt_handler_8188eu(adapt, pattrib->pkt_len, precvframe->pkt->data);
 167                         rtw_free_recvframe(precvframe, pfree_recv_queue);
 168                 }
 169                 pkt_cnt--;
 170                 transfer_len -= pkt_offset;
 171                 pbuf += pkt_offset;
 172                 precvframe = NULL;
 173                 pkt_copy = NULL;
 174
 175                 if (transfer_len > 0 && pkt_cnt == 0)
 176                         pkt_cnt = (le32_to_cpu(prxstat->rxdw2) >> 16) & 0xff;
 177
 178         } while ((transfer_len > 0) && (pkt_cnt > 0));
 179
 180 _exit_recvbuf2recvframe:
 181
 182         return _SUCCESS;
 183 }
 184
 185 unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
 186 {
 187         unsigned int pipe = 0, ep_num = 0;
 188         struct usb_device *pusbd = pdvobj->pusbdev;
 189
 190         if (addr == RECV_BULK_IN_ADDR) {
 191                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
 192         } else if (addr == RECV_INT_IN_ADDR) {
 193                 pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[1]);
 194         } else if (addr < HW_QUEUE_ENTRY) {
 195                 ep_num = pdvobj->Queue2Pipe[addr];
 196                 pipe = usb_sndbulkpipe(pusbd, ep_num);
 197         }
 198
 199         return pipe;
 200 }
 201
 202 static int usbctrl_vendorreq(struct adapter *adapt, u8 request, u16 value, u16 index, void *pdata, u16 len, u8 requesttype)
 203 {
 204         struct dvobj_priv *dvobjpriv = adapter_to_dvobj(adapt);
 205         struct usb_device *udev = dvobjpriv->pusbdev;
 206         unsigned int pipe;
 207         int status = 0;
 208         u8 reqtype;
 209         u8 *pIo_buf;
 210         int vendorreq_times = 0;
 211
 212         if ((adapt->bSurpriseRemoved) || (adapt->pwrctrlpriv.pnp_bstop_trx)) {
 213                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 214                          ("%s:(adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 215                           __func__));
 216                 status = -EPERM;
 217                 goto exit;
 218         }
 219
 220         if (len > MAX_VENDOR_REQ_CMD_SIZE) {
 221                 DBG_88E("[%s] Buffer len error ,vendor request failed\n", __func__);
 222                 status = -EINVAL;
 223                 goto exit;
 224         }
 225
 226         if (mutex_lock_interruptible(&dvobjpriv->usb_vendor_req_mutex)) {
 227                 status = -ERESTARTSYS;
 228                 goto exit;
 229         }
 230
 231         /*  Acquire IO memory for vendorreq */
 232         pIo_buf = kmalloc(MAX_USB_IO_CTL_SIZE, GFP_ATOMIC);
 233
 234         if (!pIo_buf) {
 235                 status = -ENOMEM;
 236                 goto release_mutex;
 237         }
 238
 239         while (++vendorreq_times <= MAX_USBCTRL_VENDORREQ_TIMES) {
 240                 memset(pIo_buf, 0, len);
 241
 242                 if (requesttype == 0x01) {
 243                         pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
 244                         reqtype =  REALTEK_USB_VENQT_READ;
 245                 } else {
 246                         pipe = usb_sndctrlpipe(udev, 0);/* write_out */
 247                         reqtype =  REALTEK_USB_VENQT_WRITE;
 248                         memcpy(pIo_buf, pdata, len);
 249                 }
 250
 251                 status = usb_control_msg(udev, pipe, request, reqtype, value, index, pIo_buf, len, RTW_USB_CONTROL_MSG_TIMEOUT);
 252
 253                 if (status == len) {   /*  Success this control transfer. */
 254                         if (requesttype == 0x01)
 255                                 memcpy(pdata, pIo_buf,  len);
 256                 } else { /*  error cases */
 257                         DBG_88E("reg 0x%x, usb %s %u fail, status:%d value=0x%x, vendorreq_times:%d\n",
 258                                 value, (requesttype == 0x01) ? "read" : "write",
 259                                 len, status, *(u32 *)pdata, vendorreq_times);
 260
 261                         if (status < 0) {
 262                                 if (status == (-ESHUTDOWN) || status == -ENODEV)
 263                                         adapt->bSurpriseRemoved = true;
 264                                 else
 265                                         adapt->HalData->srestpriv.wifi_error_status = USB_VEN_REQ_CMD_FAIL;
 266                         } else { /*  status != len && status >= 0 */
 267                                 if (status > 0) {
 268                                         if (requesttype == 0x01) {
 269                                                 /*  For Control read transfer, we have to copy the read data from pIo_buf to pdata. */
 270                                                 memcpy(pdata, pIo_buf,  len);
 271                                         }
 272                                 }
 273                         }
 274                 }
 275
 276                 /*  firmware download is checksummed, don't retry */
 277                 if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
 278                         break;
 279         }
 280         kfree(pIo_buf);
 281
 282 release_mutex:
 283         mutex_unlock(&dvobjpriv->usb_vendor_req_mutex);
 284 exit:
 285         return status;
 286 }
 287
 288 u8 usb_read8(struct adapter *adapter, u32 addr)
 289 {
 290         u8 request;
 291         u8 requesttype;
 292         u16 wvalue;
 293         u16 index;
 294         u16 len;
 295         u8 data = 0;
 296
 297         request = 0x05;
 298         requesttype = 0x01;/* read_in */
 299         index = 0;/* n/a */
 300
 301         wvalue = (u16)(addr & 0x0000ffff);
 302         len = 1;
 303
 304         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 305
 306         return data;
 307 }
 308
 309 u16 usb_read16(struct adapter *adapter, u32 addr)
 310 {
 311         u8 request;
 312         u8 requesttype;
 313         u16 wvalue;
 314         u16 index;
 315         u16 len;
 316         __le32 data;
 317
 318         request = 0x05;
 319         requesttype = 0x01;/* read_in */
 320         index = 0;/* n/a */
 321         wvalue = (u16)(addr & 0x0000ffff);
 322         len = 2;
 323         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 324
 325         return (u16)(le32_to_cpu(data) & 0xffff);
 326 }
 327
 328 u32 usb_read32(struct adapter *adapter, u32 addr)
 329 {
 330         u8 request;
 331         u8 requesttype;
 332         u16 wvalue;
 333         u16 index;
 334         u16 len;
 335         __le32 data;
 336
 337         request = 0x05;
 338         requesttype = 0x01;/* read_in */
 339         index = 0;/* n/a */
 340
 341         wvalue = (u16)(addr & 0x0000ffff);
 342         len = 4;
 343
 344         usbctrl_vendorreq(adapter, request, wvalue, index, &data, len, requesttype);
 345
 346         return le32_to_cpu(data);
 347 }
 348
 349 static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 350 {
 351         struct recv_buf *precvbuf = (struct recv_buf *)purb->context;
 352         struct adapter *adapt = (struct adapter *)precvbuf->adapter;
 353         struct recv_priv *precvpriv = &adapt->recvpriv;
 354
 355         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("%s!!!\n", __func__));
 356
 357         if (adapt->bSurpriseRemoved || adapt->bDriverStopped || adapt->bReadPortCancel) {
 358                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 359                          ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)\n",
 360                          __func__, adapt->bDriverStopped,
 361                          adapt->bSurpriseRemoved));
 362
 363                 precvbuf->reuse = true;
 364                 DBG_88E("%s() RX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bReadPortCancel(%d)\n",
 365                         __func__, adapt->bDriverStopped,
 366                         adapt->bSurpriseRemoved, adapt->bReadPortCancel);
 367                 return;
 368         }
 369
 370         if (purb->status == 0) { /* SUCCESS */
 371                 if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
 372                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 373                                  ("%s: (purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)\n",
 374                                  __func__));
 375                         precvbuf->reuse = true;
 376                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 377                         DBG_88E("%s()-%d: RX Warning!\n", __func__, __LINE__);
 378                 } else {
 379                         skb_put(precvbuf->pskb, purb->actual_length);
 380                         skb_queue_tail(&precvpriv->rx_skb_queue, precvbuf->pskb);
 381
 382                         if (skb_queue_len(&precvpriv->rx_skb_queue) <= 1)
 383                                 tasklet_schedule(&precvpriv->recv_tasklet);
 384
 385                         precvbuf->pskb = NULL;
 386                         precvbuf->reuse = false;
 387                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 388                 }
 389         } else {
 390                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 391                          ("%s : purb->status(%d) != 0\n",
 392                           __func__, purb->status));
 393
 394                 DBG_88E("###=> %s => urb status(%d)\n", __func__, purb->status);
 395                 skb_put(precvbuf->pskb, purb->actual_length);
 396                 precvbuf->pskb = NULL;
 397
 398                 switch (purb->status) {
 399                 case -EINVAL:
 400                 case -EPIPE:
 401                 case -ENODEV:
 402                 case -ESHUTDOWN:
 403                         adapt->bSurpriseRemoved = true;
 404                         /* fall through */
 405                 case -ENOENT:
 406                         adapt->bDriverStopped = true;
 407                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 408                                  ("%s:bDriverStopped=true\n", __func__));
 409                         break;
 410                 case -EPROTO:
 411                 case -EOVERFLOW:
 412                         adapt->HalData->srestpriv.wifi_error_status = USB_READ_PORT_FAIL;
 413                         precvbuf->reuse = true;
 414                         usb_read_port(adapt, RECV_BULK_IN_ADDR, precvbuf);
 415                         break;
 416                 case -EINPROGRESS:
 417                         DBG_88E("ERROR: URB IS IN PROGRESS!\n");
 418                         break;
 419                 default:
 420                         break;
 421                 }
 422         }
 423 }
 424
 425 u32 usb_read_port(struct adapter *adapter, u32 addr, struct recv_buf *precvbuf)
 426 {
 427         struct urb *purb = NULL;
 428         struct dvobj_priv *pdvobj = adapter_to_dvobj(adapter);
 429         struct recv_priv *precvpriv = &adapter->recvpriv;
 430         struct usb_device *pusbd = pdvobj->pusbdev;
 431         int err;
 432         unsigned int pipe;
 433         u32 ret = _SUCCESS;
 434
 435         if (adapter->bDriverStopped || adapter->bSurpriseRemoved ||
 436             adapter->pwrctrlpriv.pnp_bstop_trx) {
 437                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 438                          ("%s:(adapt->bDriverStopped ||adapt->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 439                           __func__));
 440                 return _FAIL;
 441         }
 442
 443         if (!precvbuf) {
 444                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 445                          ("%s:precvbuf==NULL\n", __func__));
 446                 return _FAIL;
 447         }
 448
 449         if (!precvbuf->reuse || !precvbuf->pskb) {
 450                 precvbuf->pskb = skb_dequeue(&precvpriv->free_recv_skb_queue);
 451                 if (precvbuf->pskb)
 452                         precvbuf->reuse = true;
 453         }
 454
 455         /* re-assign for linux based on skb */
 456         if (!precvbuf->reuse || !precvbuf->pskb) {
 457                 precvbuf->pskb = netdev_alloc_skb(adapter->pnetdev, MAX_RECVBUF_SZ);
 458                 if (!precvbuf->pskb) {
 459                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("init_recvbuf(): alloc_skb fail!\n"));
 460                         DBG_88E("#### %s() alloc_skb fail!#####\n", __func__);
 461                         return _FAIL;
 462                 }
 463         } else { /* reuse skb */
 464                 precvbuf->reuse = false;
 465         }
 466
 467         purb = precvbuf->purb;
 468
 469         /* translate DMA FIFO addr to pipehandle */
 470         pipe = ffaddr2pipehdl(pdvobj, addr);
 471
 472         usb_fill_bulk_urb(purb, pusbd, pipe,
 473                           precvbuf->pskb->data,
 474                           MAX_RECVBUF_SZ,
 475                           usb_read_port_complete,
 476                           precvbuf);/* context is precvbuf */
 477
 478         err = usb_submit_urb(purb, GFP_ATOMIC);
 479         if ((err) && (err != (-EPERM))) {
 480                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 481                          ("cannot submit rx in-token(err=0x%.8x), URB_STATUS =0x%.8x",
 482                          err, purb->status));
 483                 DBG_88E("cannot submit rx in-token(err = 0x%08x),urb_status = %d\n",
 484                         err, purb->status);
 485                 ret = _FAIL;
 486         }
 487
 488         return ret;
 489 }
 490
 491 void rtw_hal_inirp_deinit(struct adapter *padapter)
 492 {
 493         int i;
 494         struct recv_buf *precvbuf;
 495
 496         precvbuf = padapter->recvpriv.precv_buf;
 497
 498         DBG_88E("%s\n", __func__);
 499
 500         padapter->bReadPortCancel = true;
 501
 502         for (i = 0; i < NR_RECVBUFF; i++) {
 503                 precvbuf->reuse = true;
 504                 if (precvbuf->purb)
 505                         usb_kill_urb(precvbuf->purb);
 506                 precvbuf++;
 507         }
 508 }
 509
 510 int usb_write8(struct adapter *adapter, u32 addr, u8 val)
 511 {
 512         u8 request;
 513         u8 requesttype;
 514         u16 wvalue;
 515         u16 index;
 516         u16 len;
 517         u8 data;
 518
 519         request = 0x05;
 520         requesttype = 0x00;/* write_out */
 521         index = 0;/* n/a */
 522         wvalue = (u16)(addr & 0x0000ffff);
 523         len = 1;
 524         data = val;
 525         return usbctrl_vendorreq(adapter, request, wvalue,
 526                                  index, &data, len, requesttype);
 527 }
 528
 529 int usb_write16(struct adapter *adapter, u32 addr, u16 val)
 530 {
 531         u8 request;
 532         u8 requesttype;
 533         u16 wvalue;
 534         u16 index;
 535         u16 len;
 536         __le32 data;
 537
 538         request = 0x05;
 539         requesttype = 0x00;/* write_out */
 540         index = 0;/* n/a */
 541
 542         wvalue = (u16)(addr & 0x0000ffff);
 543         len = 2;
 544
 545         data = cpu_to_le32(val & 0x0000ffff);
 546
 547         return usbctrl_vendorreq(adapter, request, wvalue,
 548                                  index, &data, len, requesttype);
 549 }
 550
 551 int usb_write32(struct adapter *adapter, u32 addr, u32 val)
 552 {
 553         u8 request;
 554         u8 requesttype;
 555         u16 wvalue;
 556         u16 index;
 557         u16 len;
 558         __le32 data;
 559
 560         request = 0x05;
 561         requesttype = 0x00;/* write_out */
 562         index = 0;/* n/a */
 563
 564         wvalue = (u16)(addr & 0x0000ffff);
 565         len = 4;
 566         data = cpu_to_le32(val);
 567
 568         return usbctrl_vendorreq(adapter, request, wvalue,
 569                                  index, &data, len, requesttype);
 570 }
 571
 572 static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
 573 {
 574         struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
 575         struct adapter *padapter = pxmitbuf->padapter;
 576         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 577
 578         switch (pxmitbuf->flags) {
 579         case VO_QUEUE_INX:
 580                 pxmitpriv->voq_cnt--;
 581                 break;
 582         case VI_QUEUE_INX:
 583                 pxmitpriv->viq_cnt--;
 584                 break;
 585         case BE_QUEUE_INX:
 586                 pxmitpriv->beq_cnt--;
 587                 break;
 588         case BK_QUEUE_INX:
 589                 pxmitpriv->bkq_cnt--;
 590                 break;
 591         case HIGH_QUEUE_INX:
 592 #ifdef CONFIG_88EU_AP_MODE
 593                 rtw_chk_hi_queue_cmd(padapter);
 594 #endif
 595                 break;
 596         default:
 597                 break;
 598         }
 599
 600         if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
 601             padapter->bWritePortCancel) {
 602                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 603                          ("%s:bDriverStopped(%d) OR bSurpriseRemoved(%d)",
 604                           __func__, padapter->bDriverStopped,
 605                           padapter->bSurpriseRemoved));
 606                 DBG_88E("%s(): TX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bWritePortCancel(%d) pxmitbuf->ext_tag(%x)\n",
 607                         __func__, padapter->bDriverStopped,
 608                         padapter->bSurpriseRemoved, padapter->bReadPortCancel,
 609                         pxmitbuf->ext_tag);
 610
 611                 goto check_completion;
 612         }
 613
 614         if (purb->status) {
 615                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 616                          ("%s : purb->status(%d) != 0\n",
 617                           __func__, purb->status));
 618                 DBG_88E("###=> %s status(%d)\n", __func__, purb->status);
 619                 if ((purb->status == -EPIPE) || (purb->status == -EPROTO)) {
 620                         sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
 621                 } else if (purb->status == -EINPROGRESS) {
 622                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 623                                  ("%s: EINPROGRESS\n", __func__));
 624                         goto check_completion;
 625                 } else if (purb->status == -ENOENT) {
 626                         DBG_88E("%s: -ENOENT\n", __func__);
 627                         goto check_completion;
 628                 } else if (purb->status == -ECONNRESET) {
 629                         DBG_88E("%s: -ECONNRESET\n", __func__);
 630                         goto check_completion;
 631                 } else if (purb->status == -ESHUTDOWN) {
 632                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 633                                  ("%s: ESHUTDOWN\n", __func__));
 634                         padapter->bDriverStopped = true;
 635                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 636                                  ("%s:bDriverStopped = true\n", __func__));
 637                         goto check_completion;
 638                 } else {
 639                         padapter->bSurpriseRemoved = true;
 640                         DBG_88E("bSurpriseRemoved = true\n");
 641                         RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 642                                  ("%s:bSurpriseRemoved = true\n", __func__));
 643                         goto check_completion;
 644                 }
 645         }
 646
 647 check_completion:
 648         rtw_sctx_done_err(&pxmitbuf->sctx,
 649                           purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
 650                           RTW_SCTX_DONE_SUCCESS);
 651
 652         rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
 653
 654         tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
 655 }
 656
 657 u32 usb_write_port(struct adapter *padapter, u32 addr, u32 cnt, struct xmit_buf *xmitbuf)
 658 {
 659         unsigned long irqL;
 660         unsigned int pipe;
 661         int status;
 662         u32 ret = _FAIL;
 663         struct urb *purb = NULL;
 664         struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
 665         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 666         struct xmit_frame *pxmitframe = (struct xmit_frame *)xmitbuf->priv_data;
 667         struct usb_device *pusbd = pdvobj->pusbdev;
 668
 669         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("+%s\n", __func__));
 670
 671         if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
 672             (padapter->pwrctrlpriv.pnp_bstop_trx)) {
 673                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 674                          ("%s:( padapter->bDriverStopped ||padapter->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n",
 675                           __func__));
 676                 rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
 677                 goto exit;
 678         }
 679
 680         spin_lock_irqsave(&pxmitpriv->lock, irqL);
 681
 682         switch (addr) {
 683         case VO_QUEUE_INX:
 684                 pxmitpriv->voq_cnt++;
 685                 xmitbuf->flags = VO_QUEUE_INX;
 686                 break;
 687         case VI_QUEUE_INX:
 688                 pxmitpriv->viq_cnt++;
 689                 xmitbuf->flags = VI_QUEUE_INX;
 690                 break;
 691         case BE_QUEUE_INX:
 692                 pxmitpriv->beq_cnt++;
 693                 xmitbuf->flags = BE_QUEUE_INX;
 694                 break;
 695         case BK_QUEUE_INX:
 696                 pxmitpriv->bkq_cnt++;
 697                 xmitbuf->flags = BK_QUEUE_INX;
 698                 break;
 699         case HIGH_QUEUE_INX:
 700                 xmitbuf->flags = HIGH_QUEUE_INX;
 701                 break;
 702         default:
 703                 xmitbuf->flags = MGT_QUEUE_INX;
 704                 break;
 705         }
 706
 707         spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
 708
 709         purb    = xmitbuf->pxmit_urb[0];
 710
 711         /* translate DMA FIFO addr to pipehandle */
 712         pipe = ffaddr2pipehdl(pdvobj, addr);
 713
 714         usb_fill_bulk_urb(purb, pusbd, pipe,
 715                           pxmitframe->buf_addr, /*  xmitbuf->pbuf */
 716                           cnt,
 717                           usb_write_port_complete,
 718                           xmitbuf);/* context is xmitbuf */
 719
 720         status = usb_submit_urb(purb, GFP_ATOMIC);
 721         if (status) {
 722                 rtw_sctx_done_err(&xmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
 723                 DBG_88E("%s, status =%d\n", __func__, status);
 724                 RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
 725                          ("%s(): usb_submit_urb, status =%x\n",
 726                           __func__, status));
 727
 728                 switch (status) {
 729                 case -ENODEV:
 730                         padapter->bDriverStopped = true;
 731                         break;
 732                 default:
 733                         break;
 734                 }
 735                 goto exit;
 736         }
 737
 738         ret = _SUCCESS;
 739
 740 /*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
 741
 742         RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("-%s\n", __func__));
 743
 744 exit:
 745         if (ret != _SUCCESS)
 746                 rtw_free_xmitbuf(pxmitpriv, xmitbuf);
 747         return ret;
 748 }
 749
 750 void usb_write_port_cancel(struct adapter *padapter)
 751 {
 752         int i, j;
 753         struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
 754
 755         DBG_88E("%s\n", __func__);
 756
 757         padapter->bWritePortCancel = true;
 758
 759         for (i = 0; i < NR_XMITBUFF; i++) {
 760                 for (j = 0; j < 8; j++) {
 761                         if (pxmitbuf->pxmit_urb[j])
 762                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 763                 }
 764                 pxmitbuf++;
 765         }
 766
 767         pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
 768         for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
 769                 for (j = 0; j < 8; j++) {
 770                         if (pxmitbuf->pxmit_urb[j])
 771                                 usb_kill_urb(pxmitbuf->pxmit_urb[j]);
 772                 }
 773                 pxmitbuf++;
 774         }
 775 }
 776
 777 void rtl8188eu_recv_tasklet(void *priv)
 778 {
 779         struct sk_buff *pskb;
 780         struct adapter *adapt = priv;
 781         struct recv_priv *precvpriv = &adapt->recvpriv;
 782
 783         while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
 784                 if ((adapt->bDriverStopped) || (adapt->bSurpriseRemoved)) {
 785                         DBG_88E("recv_tasklet => bDriverStopped or bSurpriseRemoved\n");
 786                         dev_kfree_skb_any(pskb);
 787                         break;
 788                 }
 789                 recvbuf2recvframe(adapt, pskb);
 790                 skb_reset_tail_pointer(pskb);
 791                 pskb->len = 0;
 792                 skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
 793         }
 794 }
 795
 796 void rtl8188eu_xmit_tasklet(void *priv)
 797 {
 798         struct adapter *adapt = priv;
 799         struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
 800
 801         if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))
 802                 return;
 803
 804         while (1) {
 805                 if ((adapt->bDriverStopped) ||
 806                     (adapt->bSurpriseRemoved) ||
 807                     (adapt->bWritePortCancel)) {
 808                         DBG_88E("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
 809                         break;
 810                 }
 811
 812                 if (!rtl8188eu_xmitframe_complete(adapt, pxmitpriv))
 813                         break;
 814         }
 815 }