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