drivers/staging/vt6656/usbpipe.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  *
  20  * File: usbpipe.c
  21  *
  22  * Purpose: Handle USB control endpoint
  23  *
  24  * Author: Warren Hsu
  25  *
  26  * Date: Mar. 29, 2005
  27  *
  28  * Functions:
  29  *      CONTROLnsRequestOut - Write variable length bytes to MEM/BB/MAC/EEPROM
  30  *      CONTROLnsRequestIn - Read variable length bytes from MEM/BB/MAC/EEPROM
  31  *      ControlvWriteByte - Write one byte to MEM/BB/MAC/EEPROM
  32  *      ControlvReadByte - Read one byte from MEM/BB/MAC/EEPROM
  33  *      ControlvMaskByte - Read one byte from MEM/BB/MAC/EEPROM and clear/set some bits in the same address
  34  *
  35  * Revision History:
  36  *      04-05-2004 Jerry Chen:  Initial release
  37  *      11-24-2004 Warren Hsu: Add ControlvWriteByte,ControlvReadByte,ControlvMaskByte
  38  *
  39  */
  40
  41 #include "int.h"
  42 #include "rxtx.h"
  43 #include "dpc.h"
  44 #include "control.h"
  45 #include "desc.h"
  46 #include "device.h"
  47
  48 //endpoint def
  49 //endpoint 0: control
  50 //endpoint 1: interrupt
  51 //endpoint 2: read bulk
  52 //endpoint 3: write bulk
  53
  54 //static int          msglevel                =MSG_LEVEL_DEBUG;
  55 static int          msglevel                =MSG_LEVEL_INFO;
  56
  57 #define USB_CTL_WAIT   500 //ms
  58
  59 #ifndef URB_ASYNC_UNLINK
  60 #define URB_ASYNC_UNLINK    0
  61 #endif
  62
  63 static void s_nsInterruptUsbIoCompleteRead(struct urb *urb);
  64 static void s_nsBulkInUsbIoCompleteRead(struct urb *urb);
  65 static void s_nsBulkOutIoCompleteWrite(struct urb *urb);
  66 static void s_nsControlInUsbIoCompleteRead(struct urb *urb);
  67 static void s_nsControlInUsbIoCompleteWrite(struct urb *urb);
  68
  69 int PIPEnsControlOutAsyn(struct vnt_private *pDevice, u8 byRequest,
  70         u16 wValue, u16 wIndex, u16 wLength, u8 *pbyBuffer)
  71 {
  72         int ntStatus;
  73
  74     if (pDevice->Flags & fMP_DISCONNECTED)
  75         return STATUS_FAILURE;
  76
  77     if (pDevice->Flags & fMP_CONTROL_WRITES)
  78         return STATUS_FAILURE;
  79
  80     if (in_interrupt()) {
  81         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"in_interrupt return ..byRequest %x\n", byRequest);
  82         return STATUS_FAILURE;
  83     }
  84
  85     ntStatus = usb_control_msg(
  86                             pDevice->usb,
  87                             usb_sndctrlpipe(pDevice->usb , 0),
  88                             byRequest,
  89                             0x40, // RequestType
  90                             wValue,
  91                             wIndex,
  92                             (void *) pbyBuffer,
  93                             wLength,
  94                             HZ
  95                           );
  96     if (ntStatus >= 0) {
  97         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"usb_sndctrlpipe ntStatus= %d\n", ntStatus);
  98         ntStatus = 0;
  99     } else {
 100         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"usb_sndctrlpipe fail, ntStatus= %d\n", ntStatus);
 101     }
 102
 103     return ntStatus;
 104 }
 105
 106 int PIPEnsControlOut(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
 107                 u16 wIndex, u16 wLength, u8 *pbyBuffer)
 108 {
 109         int ntStatus = 0;
 110         int ii;
 111
 112     if (pDevice->Flags & fMP_DISCONNECTED)
 113         return STATUS_FAILURE;
 114
 115     if (pDevice->Flags & fMP_CONTROL_WRITES)
 116         return STATUS_FAILURE;
 117
 118         if (pDevice->Flags & fMP_CONTROL_READS)
 119                 return STATUS_FAILURE;
 120
 121         MP_SET_FLAG(pDevice, fMP_CONTROL_WRITES);
 122
 123         pDevice->sUsbCtlRequest.bRequestType = 0x40;
 124         pDevice->sUsbCtlRequest.bRequest = byRequest;
 125         pDevice->sUsbCtlRequest.wValue = cpu_to_le16p(&wValue);
 126         pDevice->sUsbCtlRequest.wIndex = cpu_to_le16p(&wIndex);
 127         pDevice->sUsbCtlRequest.wLength = cpu_to_le16p(&wLength);
 128         pDevice->pControlURB->transfer_flags |= URB_ASYNC_UNLINK;
 129     pDevice->pControlURB->actual_length = 0;
 130     // Notice, pbyBuffer limited point to variable buffer, can't be constant.
 131         usb_fill_control_urb(pDevice->pControlURB, pDevice->usb,
 132                          usb_sndctrlpipe(pDevice->usb , 0), (char *) &pDevice->sUsbCtlRequest,
 133                          pbyBuffer, wLength, s_nsControlInUsbIoCompleteWrite, pDevice);
 134
 135         ntStatus = usb_submit_urb(pDevice->pControlURB, GFP_ATOMIC);
 136         if (ntStatus != 0) {
 137                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 138                         "control send request submission failed: %d\n",
 139                                 ntStatus);
 140                 MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 141                 return STATUS_FAILURE;
 142         }
 143
 144         spin_unlock_irq(&pDevice->lock);
 145     for (ii = 0; ii <= USB_CTL_WAIT; ii ++) {
 146
 147         if (pDevice->Flags & fMP_CONTROL_WRITES)
 148                 mdelay(1);
 149         else
 150                 break;
 151
 152         if (ii >= USB_CTL_WAIT) {
 153                 DBG_PRT(MSG_LEVEL_DEBUG,
 154                         KERN_INFO "control send request submission timeout\n");
 155             spin_lock_irq(&pDevice->lock);
 156             MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 157             return STATUS_FAILURE;
 158         }
 159     }
 160         spin_lock_irq(&pDevice->lock);
 161
 162     return STATUS_SUCCESS;
 163 }
 164
 165 int PIPEnsControlIn(struct vnt_private *pDevice, u8 byRequest, u16 wValue,
 166         u16 wIndex, u16 wLength,  u8 *pbyBuffer)
 167 {
 168         int ntStatus = 0;
 169         int ii;
 170
 171     if (pDevice->Flags & fMP_DISCONNECTED)
 172         return STATUS_FAILURE;
 173
 174     if (pDevice->Flags & fMP_CONTROL_READS)
 175         return STATUS_FAILURE;
 176
 177         if (pDevice->Flags & fMP_CONTROL_WRITES)
 178                 return STATUS_FAILURE;
 179
 180         MP_SET_FLAG(pDevice, fMP_CONTROL_READS);
 181
 182         pDevice->sUsbCtlRequest.bRequestType = 0xC0;
 183         pDevice->sUsbCtlRequest.bRequest = byRequest;
 184         pDevice->sUsbCtlRequest.wValue = cpu_to_le16p(&wValue);
 185         pDevice->sUsbCtlRequest.wIndex = cpu_to_le16p(&wIndex);
 186         pDevice->sUsbCtlRequest.wLength = cpu_to_le16p(&wLength);
 187         pDevice->pControlURB->transfer_flags |= URB_ASYNC_UNLINK;
 188     pDevice->pControlURB->actual_length = 0;
 189         usb_fill_control_urb(pDevice->pControlURB, pDevice->usb,
 190                          usb_rcvctrlpipe(pDevice->usb , 0), (char *) &pDevice->sUsbCtlRequest,
 191                          pbyBuffer, wLength, s_nsControlInUsbIoCompleteRead, pDevice);
 192
 193         ntStatus = usb_submit_urb(pDevice->pControlURB, GFP_ATOMIC);
 194         if (ntStatus != 0) {
 195                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO
 196                         "control request submission failed: %d\n", ntStatus);
 197                 MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 198                 return STATUS_FAILURE;
 199         }
 200
 201         spin_unlock_irq(&pDevice->lock);
 202     for (ii = 0; ii <= USB_CTL_WAIT; ii ++) {
 203
 204         if (pDevice->Flags & fMP_CONTROL_READS)
 205                 mdelay(1);
 206         else
 207                 break;
 208
 209         if (ii >= USB_CTL_WAIT) {
 210                 DBG_PRT(MSG_LEVEL_DEBUG,
 211                         KERN_INFO "control rcv request submission timeout\n");
 212             spin_lock_irq(&pDevice->lock);
 213             MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 214             return STATUS_FAILURE;
 215         }
 216     }
 217         spin_lock_irq(&pDevice->lock);
 218
 219     return ntStatus;
 220 }
 221
 222 static void s_nsControlInUsbIoCompleteWrite(struct urb *urb)
 223 {
 224         struct vnt_private *pDevice = (struct vnt_private *)urb->context;
 225
 226         pDevice = urb->context;
 227         switch (urb->status) {
 228         case 0:
 229                 break;
 230         case -EINPROGRESS:
 231                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status EINPROGRESS%d\n", urb->status);
 232                 break;
 233         case -ENOENT:
 234                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status ENOENT %d\n", urb->status);
 235                 break;
 236         default:
 237                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl write urb status %d\n", urb->status);
 238         }
 239
 240     MP_CLEAR_FLAG(pDevice, fMP_CONTROL_WRITES);
 241 }
 242
 243 /*
 244  * Description:
 245  *      Complete function of usb Control callback
 246  *
 247  * Parameters:
 248  *  In:
 249  *      pDevice     - Pointer to the adapter
 250  *
 251  *  Out:
 252  *      none
 253  *
 254  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 255  *
 256  */
 257
 258 static void s_nsControlInUsbIoCompleteRead(struct urb *urb)
 259 {
 260         struct vnt_private *pDevice = (struct vnt_private *)urb->context;
 261
 262         switch (urb->status) {
 263         case 0:
 264                 break;
 265         case -EINPROGRESS:
 266                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status EINPROGRESS%d\n", urb->status);
 267                 break;
 268         case -ENOENT:
 269                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status = ENOENT %d\n", urb->status);
 270                 break;
 271         default:
 272                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ctrl read urb status %d\n", urb->status);
 273         }
 274
 275     MP_CLEAR_FLAG(pDevice, fMP_CONTROL_READS);
 276 }
 277
 278 /*
 279  * Description:
 280  *      Allocates an usb interrupt in irp and calls USBD.
 281  *
 282  * Parameters:
 283  *  In:
 284  *      pDevice     - Pointer to the adapter
 285  *  Out:
 286  *      none
 287  *
 288  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 289  *
 290  */
 291
 292 int PIPEnsInterruptRead(struct vnt_private *pDevice)
 293 {
 294         int ntStatus = STATUS_FAILURE;
 295
 296     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsStartInterruptUsbRead()\n");
 297
 298     if(pDevice->intBuf.bInUse == true){
 299         return (STATUS_FAILURE);
 300     }
 301     pDevice->intBuf.bInUse = true;
 302 //    pDevice->bEventAvailable = false;
 303     pDevice->ulIntInPosted++;
 304
 305     //
 306     // Now that we have created the urb, we will send a
 307     // request to the USB device object.
 308     //
 309     pDevice->pInterruptURB->interval = pDevice->int_interval;
 310
 311 usb_fill_bulk_urb(pDevice->pInterruptURB,
 312                 pDevice->usb,
 313                 usb_rcvbulkpipe(pDevice->usb, 1),
 314                 (void *) pDevice->intBuf.pDataBuf,
 315                 MAX_INTERRUPT_SIZE,
 316                 s_nsInterruptUsbIoCompleteRead,
 317                 pDevice);
 318
 319         ntStatus = usb_submit_urb(pDevice->pInterruptURB, GFP_ATOMIC);
 320         if (ntStatus != 0) {
 321             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Submit int URB failed %d\n", ntStatus);
 322     }
 323
 324     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"<----s_nsStartInterruptUsbRead Return(%x)\n",ntStatus);
 325     return ntStatus;
 326 }
 327
 328 /*
 329  * Description:
 330  *      Complete function of usb interrupt in irp.
 331  *
 332  * Parameters:
 333  *  In:
 334  *      pDevice     - Pointer to the adapter
 335  *
 336  *  Out:
 337  *      none
 338  *
 339  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 340  *
 341  */
 342
 343 static void s_nsInterruptUsbIoCompleteRead(struct urb *urb)
 344 {
 345         struct vnt_private *pDevice = (struct vnt_private *)urb->context;
 346         int ntStatus;
 347
 348     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsInterruptUsbIoCompleteRead\n");
 349     //
 350     // The context given to IoSetCompletionRoutine is the receive buffer object
 351     //
 352
 353     //
 354     // We have a number of cases:
 355     //      1) The USB read timed out and we received no data.
 356     //      2) The USB read timed out and we received some data.
 357     //      3) The USB read was successful and fully filled our irp buffer.
 358     //      4) The irp was cancelled.
 359     //      5) Some other failure from the USB device object.
 360     //
 361     ntStatus = urb->status;
 362
 363     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_nsInterruptUsbIoCompleteRead Status %d\n", ntStatus);
 364
 365     // if we were not successful, we need to free the int buffer for future use right here
 366     // otherwise interrupt data handler will free int buffer after it handle it.
 367     if (( ntStatus != STATUS_SUCCESS )) {
 368         pDevice->ulBulkInError++;
 369         pDevice->intBuf.bInUse = false;
 370
 371 //        if (ntStatus == USBD_STATUS_CRC) {
 372 //            pDevice->ulIntInContCRCError++;
 373 //        }
 374
 375 //        if (ntStatus == STATUS_NOT_CONNECTED )
 376 //        {
 377             pDevice->fKillEventPollingThread = true;
 378 //        }
 379         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"IntUSBIoCompleteControl STATUS = %d\n", ntStatus );
 380     } else {
 381             pDevice->ulIntInBytesRead += (unsigned long) urb->actual_length;
 382             pDevice->ulIntInContCRCError = 0;
 383             pDevice->bEventAvailable = true;
 384             INTnsProcessData(pDevice);
 385     }
 386
 387     STAvUpdateUSBCounter(&pDevice->scStatistic.USB_InterruptStat, ntStatus);
 388
 389     if (pDevice->fKillEventPollingThread != true) {
 390        usb_fill_bulk_urb(pDevice->pInterruptURB,
 391                       pDevice->usb,
 392                       usb_rcvbulkpipe(pDevice->usb, 1),
 393                      (void *) pDevice->intBuf.pDataBuf,
 394                      MAX_INTERRUPT_SIZE,
 395                      s_nsInterruptUsbIoCompleteRead,
 396                      pDevice);
 397
 398         ntStatus = usb_submit_urb(pDevice->pInterruptURB, GFP_ATOMIC);
 399         if (ntStatus != 0) {
 400             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Submit int URB failed %d\n", ntStatus);
 401            }
 402     }
 403     //
 404     // We return STATUS_MORE_PROCESSING_REQUIRED so that the completion
 405     // routine (IofCompleteRequest) will stop working on the irp.
 406     //
 407     return ;
 408 }
 409
 410 /*
 411  * Description:
 412  *      Allocates an usb BulkIn  irp and calls USBD.
 413  *
 414  * Parameters:
 415  *  In:
 416  *      pDevice     - Pointer to the adapter
 417  *  Out:
 418  *      none
 419  *
 420  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 421  *
 422  */
 423
 424 int PIPEnsBulkInUsbRead(struct vnt_private *pDevice, struct vnt_rcb *pRCB)
 425 {
 426         int ntStatus = 0;
 427         struct urb *pUrb;
 428
 429     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsStartBulkInUsbRead\n");
 430
 431     if (pDevice->Flags & fMP_DISCONNECTED)
 432         return STATUS_FAILURE;
 433
 434     pDevice->ulBulkInPosted++;
 435
 436         pUrb = pRCB->pUrb;
 437     //
 438     // Now that we have created the urb, we will send a
 439     // request to the USB device object.
 440     //
 441     if (pRCB->skb == NULL) {
 442         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pRCB->skb is null \n");
 443         return ntStatus;
 444     }
 445
 446         usb_fill_bulk_urb(pUrb,
 447                 pDevice->usb,
 448                 usb_rcvbulkpipe(pDevice->usb, 2),
 449                 (void *) (pRCB->skb->data),
 450                 MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
 451                 s_nsBulkInUsbIoCompleteRead,
 452                 pRCB);
 453
 454         ntStatus = usb_submit_urb(pUrb, GFP_ATOMIC);
 455         if (ntStatus != 0) {
 456                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Submit Rx URB failed %d\n", ntStatus);
 457                 return STATUS_FAILURE ;
 458         }
 459     pRCB->Ref = 1;
 460     pRCB->bBoolInUse= true;
 461
 462     return ntStatus;
 463 }
 464
 465 /*
 466  * Description:
 467  *      Complete function of usb BulkIn irp.
 468  *
 469  * Parameters:
 470  *  In:
 471  *      pDevice     - Pointer to the adapter
 472  *
 473  *  Out:
 474  *      none
 475  *
 476  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 477  *
 478  */
 479
 480 static void s_nsBulkInUsbIoCompleteRead(struct urb *urb)
 481 {
 482         struct vnt_rcb *pRCB = (struct vnt_rcb *)urb->context;
 483         struct vnt_private *pDevice = pRCB->pDevice;
 484         unsigned long   bytesRead;
 485         int bIndicateReceive = false;
 486         int bReAllocSkb = false;
 487         int status;
 488
 489     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsBulkInUsbIoCompleteRead\n");
 490     status = urb->status;
 491     bytesRead = urb->actual_length;
 492
 493     if (status) {
 494         pDevice->ulBulkInError++;
 495         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BULK In failed %d\n", status);
 496
 497            pDevice->scStatistic.RxFcsErrCnt ++;
 498 //todo...xxxxxx
 499 //        if (status == USBD_STATUS_CRC) {
 500 //            pDevice->ulBulkInContCRCError++;
 501 //        }
 502 //        if (status == STATUS_DEVICE_NOT_CONNECTED )
 503 //        {
 504 //            MP_SET_FLAG(pDevice, fMP_DISCONNECTED);
 505 //        }
 506     } else {
 507         if (bytesRead)
 508                 bIndicateReceive = true;
 509         pDevice->ulBulkInContCRCError = 0;
 510         pDevice->ulBulkInBytesRead += bytesRead;
 511
 512            pDevice->scStatistic.RxOkCnt ++;
 513     }
 514
 515     STAvUpdateUSBCounter(&pDevice->scStatistic.USB_BulkInStat, status);
 516
 517     if (bIndicateReceive) {
 518         spin_lock(&pDevice->lock);
 519         if (RXbBulkInProcessData(pDevice, pRCB, bytesRead) == true)
 520             bReAllocSkb = true;
 521         spin_unlock(&pDevice->lock);
 522     }
 523     pRCB->Ref--;
 524     if (pRCB->Ref == 0)
 525     {
 526         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"RxvFreeNormal %d \n",pDevice->NumRecvFreeList);
 527         spin_lock(&pDevice->lock);
 528         RXvFreeRCB(pRCB, bReAllocSkb);
 529         spin_unlock(&pDevice->lock);
 530     }
 531
 532     return;
 533 }
 534
 535 /*
 536  * Description:
 537  *      Allocates an usb BulkOut  irp and calls USBD.
 538  *
 539  * Parameters:
 540  *  In:
 541  *      pDevice     - Pointer to the adapter
 542  *  Out:
 543  *      none
 544  *
 545  * Return Value: STATUS_INSUFFICIENT_RESOURCES or result of IoCallDriver
 546  *
 547  */
 548
 549 int PIPEnsSendBulkOut(struct vnt_private *pDevice,
 550                                 struct vnt_usb_send_context *pContext)
 551 {
 552         int status;
 553         struct urb          *pUrb;
 554
 555     pDevice->bPWBitOn = false;
 556
 557 /*
 558     if (pDevice->pPendingBulkOutContext != NULL) {
 559         pDevice->NumContextsQueued++;
 560         EnqueueContext(pDevice->FirstTxContextQueue, pDevice->LastTxContextQueue, pContext);
 561         status = STATUS_PENDING;
 562         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Send pending!\n");
 563         return status;
 564     }
 565 */
 566
 567     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"s_nsSendBulkOut\n");
 568
 569     if (MP_IS_READY(pDevice) && (pDevice->Flags & fMP_POST_WRITES)) {
 570
 571         pUrb = pContext->pUrb;
 572         pDevice->ulBulkOutPosted++;
 573 //        pDevice->pPendingBulkOutContext = pContext;
 574         usb_fill_bulk_urb(
 575                     pUrb,
 576                         pDevice->usb,
 577                     usb_sndbulkpipe(pDevice->usb, 3),
 578                     (void *) &(pContext->Data[0]),
 579                         pContext->uBufLen,
 580                         s_nsBulkOutIoCompleteWrite,
 581                         pContext);
 582
 583         status = usb_submit_urb(pUrb, GFP_ATOMIC);
 584         if (status != 0)
 585         {
 586                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Submit Tx URB failed %d\n", status);
 587                 pContext->bBoolInUse = false;
 588                 return STATUS_FAILURE;
 589         }
 590         return STATUS_PENDING;
 591     }
 592     else {
 593         pContext->bBoolInUse = false;
 594         return STATUS_RESOURCES;
 595     }
 596 }
 597
 598 /*
 599  * Description: s_nsBulkOutIoCompleteWrite
 600  *     1a) Indicate to the protocol the status of the write.
 601  *     1b) Return ownership of the packet to the protocol.
 602  *
 603  *     2)  If any more packets are queue for sending, send another packet
 604  *         to USBD.
 605  *         If the attempt to send the packet to the driver fails,
 606  *         return ownership of the packet to the protocol and
 607  *         try another packet (until one succeeds).
 608  *
 609  * Parameters:
 610  *  In:
 611  *      pdoUsbDevObj  - pointer to the USB device object which
 612  *                      completed the irp
 613  *      pIrp          - the irp which was completed by the
 614  *                      device object
 615  *      pContext      - the context given to IoSetCompletionRoutine
 616  *                      before calling IoCallDriver on the irp
 617  *                      The pContext is a pointer to the USB device object.
 618  *  Out:
 619  *      none
 620  *
 621  * Return Value: STATUS_MORE_PROCESSING_REQUIRED - allows the completion routine
 622  *               (IofCompleteRequest) to stop working on the irp.
 623  *
 624  */
 625
 626 static void s_nsBulkOutIoCompleteWrite(struct urb *urb)
 627 {
 628         struct vnt_private *pDevice;
 629         int status;
 630         CONTEXT_TYPE ContextType;
 631         unsigned long ulBufLen;
 632         struct vnt_usb_send_context *pContext;
 633
 634     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->s_nsBulkOutIoCompleteWrite\n");
 635     //
 636     // The context given to IoSetCompletionRoutine is an USB_CONTEXT struct
 637     //
 638         pContext = (struct vnt_usb_send_context *)urb->context;
 639
 640     pDevice = pContext->pDevice;
 641     ContextType = pContext->Type;
 642     ulBufLen = pContext->uBufLen;
 643
 644     if (!netif_device_present(pDevice->dev))
 645             return;
 646
 647    //
 648     // Perform various IRP, URB, and buffer 'sanity checks'
 649     //
 650
 651     status = urb->status;
 652     //we should have failed, succeeded, or cancelled, but NOT be pending
 653     STAvUpdateUSBCounter(&pDevice->scStatistic.USB_BulkOutStat, status);
 654
 655     if(status == STATUS_SUCCESS) {
 656         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Write %d bytes\n",(int)ulBufLen);
 657         pDevice->ulBulkOutBytesWrite += ulBufLen;
 658         pDevice->ulBulkOutContCRCError = 0;
 659         pDevice->nTxDataTimeCout = 0;
 660
 661     } else {
 662         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"BULK Out failed %d\n", status);
 663         pDevice->ulBulkOutError++;
 664     }
 665
 666 //    pDevice->ulCheckForHangCount = 0;
 667 //    pDevice->pPendingBulkOutContext = NULL;
 668
 669     if ( CONTEXT_DATA_PACKET == ContextType ) {
 670         // Indicate to the protocol the status of the sent packet and return
 671         // ownership of the packet.
 672             if (pContext->pPacket != NULL) {
 673                 dev_kfree_skb_irq(pContext->pPacket);
 674                 pContext->pPacket = NULL;
 675             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"tx  %d bytes\n",(int)ulBufLen);
 676             }
 677
 678         pDevice->dev->trans_start = jiffies;
 679
 680         if (status == STATUS_SUCCESS) {
 681             pDevice->packetsSent++;
 682         }
 683         else {
 684             DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Send USB error! [%08xh]\n", status);
 685             pDevice->packetsSentDropped++;
 686         }
 687
 688     }
 689     if (pDevice->bLinkPass == true) {
 690         if (netif_queue_stopped(pDevice->dev))
 691             netif_wake_queue(pDevice->dev);
 692     }
 693     pContext->bBoolInUse = false;
 694
 695     return;
 696 }