drivers/net/wireless/libertas/if_usb.c

   1 /**
   2   * This file contains functions used in USB interface module.
   3   */
   4 #include <linux/delay.h>
   5 #include <linux/firmware.h>
   6 #include <linux/netdevice.h>
   7 #include <linux/usb.h>
   8
   9 #include "host.h"
  10 #include "sbi.h"
  11 #include "decl.h"
  12 #include "defs.h"
  13 #include "dev.h"
  14 #include "if_usb.h"
  15
  16 #define MESSAGE_HEADER_LEN      4
  17
  18 static const char usbdriver_name[] = "usb8xxx";
  19
  20 static struct usb_device_id if_usb_table[] = {
  21         /* Enter the device signature inside */
  22         { USB_DEVICE(0x1286, 0x2001) },
  23         { USB_DEVICE(0x05a3, 0x8388) },
  24         {}      /* Terminating entry */
  25 };
  26
  27 MODULE_DEVICE_TABLE(usb, if_usb_table);
  28
  29 static void if_usb_receive(struct urb *urb);
  30 static void if_usb_receive_fwload(struct urb *urb);
  31
  32 /**
  33  *  @brief  call back function to handle the status of the URB
  34  *  @param urb          pointer to urb structure
  35  *  @return             N/A
  36  */
  37 static void if_usb_write_bulk_callback(struct urb *urb)
  38 {
  39         wlan_private *priv = (wlan_private *) (urb->context);
  40         wlan_adapter *adapter = priv->adapter;
  41         struct net_device *dev = priv->wlan_dev.netdev;
  42
  43         /* handle the transmission complete validations */
  44
  45         if (urb->status != 0) {
  46                 /* print the failure status number for debug */
  47                 lbs_pr_info("URB in failure status\n");
  48         } else {
  49                 /*
  50                 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
  51                 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
  52                        urb->actual_length);
  53                 */
  54                 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
  55                 /* Wake main thread if commands are pending */
  56                 if (!adapter->cur_cmd)
  57                         wake_up_interruptible(&priv->mainthread.waitq);
  58                 if ((adapter->connect_status == libertas_connected))
  59                         netif_wake_queue(dev);
  60         }
  61
  62         return;
  63 }
  64
  65 /**
  66  *  @brief  free tx/rx urb, skb and rx buffer
  67  *  @param cardp        pointer usb_card_rec
  68  *  @return             N/A
  69  */
  70 void if_usb_free(struct usb_card_rec *cardp)
  71 {
  72         lbs_deb_enter(LBS_DEB_USB);
  73
  74         /* Unlink tx & rx urb */
  75         usb_kill_urb(cardp->tx_urb);
  76         usb_kill_urb(cardp->rx_urb);
  77
  78         usb_free_urb(cardp->tx_urb);
  79         cardp->tx_urb = NULL;
  80
  81         usb_free_urb(cardp->rx_urb);
  82         cardp->rx_urb = NULL;
  83
  84         kfree(cardp->bulk_out_buffer);
  85         cardp->bulk_out_buffer = NULL;
  86
  87         lbs_deb_leave(LBS_DEB_USB);
  88 }
  89
  90 /**
  91  *  @brief sets the configuration values
  92  *  @param ifnum        interface number
  93  *  @param id           pointer to usb_device_id
  94  *  @return             0 on success, error code on failure
  95  */
  96 static int if_usb_probe(struct usb_interface *intf,
  97                         const struct usb_device_id *id)
  98 {
  99         struct usb_device *udev;
 100         struct usb_host_interface *iface_desc;
 101         struct usb_endpoint_descriptor *endpoint;
 102         wlan_private *priv;
 103         struct usb_card_rec *usb_cardp;
 104         int i;
 105
 106         udev = interface_to_usbdev(intf);
 107
 108         usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
 109         if (!usb_cardp) {
 110                 lbs_pr_err("Out of memory allocating private data.\n");
 111                 goto error;
 112         }
 113
 114         usb_cardp->udev = udev;
 115         iface_desc = intf->cur_altsetting;
 116
 117         lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
 118                " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
 119                udev->descriptor.bcdUSB,
 120                udev->descriptor.bDeviceClass,
 121                udev->descriptor.bDeviceSubClass,
 122                udev->descriptor.bDeviceProtocol);
 123
 124         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 125                 endpoint = &iface_desc->endpoint[i].desc;
 126                 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 127                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 128                         USB_ENDPOINT_XFER_BULK)) {
 129                         /* we found a bulk in endpoint */
 130                         lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
 131                                endpoint->wMaxPacketSize);
 132                         if (!
 133                             (usb_cardp->rx_urb =
 134                              usb_alloc_urb(0, GFP_KERNEL))) {
 135                                 lbs_deb_usbd(&udev->dev,
 136                                        "Rx URB allocation failed\n");
 137                                 goto dealloc;
 138                         }
 139                         usb_cardp->rx_urb_recall = 0;
 140
 141                         usb_cardp->bulk_in_size =
 142                             endpoint->wMaxPacketSize;
 143                         usb_cardp->bulk_in_endpointAddr =
 144                             (endpoint->
 145                              bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 146                         lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
 147                                endpoint->bEndpointAddress);
 148                 }
 149
 150                 if (((endpoint->
 151                       bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
 152                      USB_DIR_OUT)
 153                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 154                         USB_ENDPOINT_XFER_BULK)) {
 155                         /* We found bulk out endpoint */
 156                         if (!
 157                             (usb_cardp->tx_urb =
 158                              usb_alloc_urb(0, GFP_KERNEL))) {
 159                                 lbs_deb_usbd(&udev->dev,
 160                                        "Tx URB allocation failed\n");
 161                                 goto dealloc;
 162                         }
 163
 164                         usb_cardp->bulk_out_size =
 165                             endpoint->wMaxPacketSize;
 166                         lbs_deb_usbd(&udev->dev,
 167                                     "Bulk out size is %d\n",
 168                                     endpoint->wMaxPacketSize);
 169                         usb_cardp->bulk_out_endpointAddr =
 170                             endpoint->bEndpointAddress;
 171                         lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
 172                                     endpoint->bEndpointAddress);
 173                         usb_cardp->bulk_out_buffer =
 174                             kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 175                                     GFP_KERNEL);
 176
 177                         if (!usb_cardp->bulk_out_buffer) {
 178                                 lbs_deb_usbd(&udev->dev,
 179                                        "Could not allocate buffer\n");
 180                                 goto dealloc;
 181                         }
 182                 }
 183         }
 184
 185
 186         /* At this point wlan_add_card() will be called.  Don't worry
 187          * about keeping pwlanpriv around since it will be set on our
 188          * usb device data in -> add() -> libertas_sbi_register_dev().
 189          */
 190         if (!(priv = wlan_add_card(usb_cardp)))
 191                 goto dealloc;
 192         if (wlan_add_mesh(priv))
 193                 goto dealloc;
 194
 195         usb_get_dev(udev);
 196         usb_set_intfdata(intf, usb_cardp);
 197
 198         /*
 199          * return card structure, which can be got back in the
 200          * diconnect function as the ptr
 201          * argument.
 202          */
 203         return 0;
 204
 205 dealloc:
 206         if_usb_free(usb_cardp);
 207
 208 error:
 209         return -ENOMEM;
 210 }
 211
 212 /**
 213  *  @brief free resource and cleanup
 214  *  @param udev         pointer to usb_device
 215  *  @param ptr          pointer to usb_cardp
 216  *  @return             N/A
 217  */
 218 static void if_usb_disconnect(struct usb_interface *intf)
 219 {
 220         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 221         wlan_private *priv = (wlan_private *) cardp->priv;
 222         wlan_adapter *adapter = NULL;
 223
 224         adapter = priv->adapter;
 225
 226         /*
 227          * Update Surprise removed to TRUE
 228          */
 229         adapter->surpriseremoved = 1;
 230
 231         /* card is removed and we can call wlan_remove_card */
 232         lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
 233         wlan_remove_mesh(priv);
 234         wlan_remove_card(priv);
 235
 236         /* Unlink and free urb */
 237         if_usb_free(cardp);
 238
 239         usb_set_intfdata(intf, NULL);
 240         usb_put_dev(interface_to_usbdev(intf));
 241
 242         return;
 243 }
 244
 245 /**
 246  *  @brief  This function download FW
 247  *  @param priv         pointer to wlan_private
 248  *  @return             0
 249  */
 250 static int if_prog_firmware(wlan_private * priv)
 251 {
 252         struct usb_card_rec *cardp = priv->wlan_dev.card;
 253         struct FWData *fwdata;
 254         struct fwheader *fwheader;
 255         u8 *firmware = priv->firmware->data;
 256
 257         fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
 258
 259         if (!fwdata)
 260                 return -1;
 261
 262         fwheader = &fwdata->fwheader;
 263
 264         if (!cardp->CRC_OK) {
 265                 cardp->totalbytes = cardp->fwlastblksent;
 266                 cardp->fwseqnum = cardp->lastseqnum - 1;
 267         }
 268
 269         /*
 270         lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
 271                     cardp->totalbytes);
 272         */
 273
 274         memcpy(fwheader, &firmware[cardp->totalbytes],
 275                sizeof(struct fwheader));
 276
 277         cardp->fwlastblksent = cardp->totalbytes;
 278         cardp->totalbytes += sizeof(struct fwheader);
 279
 280         /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
 281         memcpy(fwdata->data, &firmware[cardp->totalbytes],
 282                fwdata->fwheader.datalength);
 283
 284         /*
 285         lbs_deb_usbd(&cardp->udev->dev,
 286                     "Data length = %d\n", fwdata->fwheader.datalength);
 287         */
 288
 289         cardp->fwseqnum = cardp->fwseqnum + 1;
 290
 291         fwdata->seqnum = cardp->fwseqnum;
 292         cardp->lastseqnum = fwdata->seqnum;
 293         cardp->totalbytes += fwdata->fwheader.datalength;
 294
 295         if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
 296                 /*
 297                 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
 298                 lbs_deb_usbd(&cardp->udev->dev,
 299                             "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
 300                             cardp->totalbytes);
 301                 */
 302                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 303                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 304
 305         } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
 306                 /*
 307                 lbs_deb_usbd(&cardp->udev->dev,
 308                             "Host has finished FW downloading\n");
 309                 lbs_deb_usbd(&cardp->udev->dev,
 310                             "Donwloading FW JUMP BLOCK\n");
 311                 */
 312                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 313                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 314                 cardp->fwfinalblk = 1;
 315         }
 316
 317         /*
 318         lbs_deb_usbd(&cardp->udev->dev,
 319                     "The firmware download is done size is %d\n",
 320                     cardp->totalbytes);
 321         */
 322
 323         kfree(fwdata);
 324
 325         return 0;
 326 }
 327
 328 static int libertas_do_reset(wlan_private *priv)
 329 {
 330         int ret;
 331         struct usb_card_rec *cardp = priv->wlan_dev.card;
 332
 333         ret = usb_reset_device(cardp->udev);
 334         if (!ret) {
 335                 msleep(10);
 336                 reset_device(priv);
 337                 msleep(10);
 338         }
 339         return ret;
 340 }
 341
 342 /**
 343  *  @brief This function transfer the data to the device.
 344  *  @param priv         pointer to wlan_private
 345  *  @param payload      pointer to payload data
 346  *  @param nb           data length
 347  *  @return             0 or -1
 348  */
 349 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
 350 {
 351         /* pointer to card structure */
 352         struct usb_card_rec *cardp = priv->wlan_dev.card;
 353         int ret = -1;
 354
 355         /* check if device is removed */
 356         if (priv->adapter->surpriseremoved) {
 357                 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
 358                 goto tx_ret;
 359         }
 360
 361         usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
 362                           usb_sndbulkpipe(cardp->udev,
 363                                           cardp->bulk_out_endpointAddr),
 364                           payload, nb, if_usb_write_bulk_callback, priv);
 365
 366         cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
 367
 368         if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
 369                 /*  transfer failed */
 370                 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
 371                 ret = -1;
 372         } else {
 373                 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
 374                 ret = 0;
 375         }
 376
 377 tx_ret:
 378         return ret;
 379 }
 380
 381 static int __if_usb_submit_rx_urb(wlan_private * priv,
 382                                   void (*callbackfn)
 383                                   (struct urb *urb))
 384 {
 385         struct usb_card_rec *cardp = priv->wlan_dev.card;
 386         struct sk_buff *skb;
 387         struct read_cb_info *rinfo = &cardp->rinfo;
 388         int ret = -1;
 389
 390         if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
 391                 lbs_pr_err("No free skb\n");
 392                 goto rx_ret;
 393         }
 394
 395         rinfo->skb = skb;
 396
 397         /* Fill the receive configuration URB and initialise the Rx call back */
 398         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
 399                           usb_rcvbulkpipe(cardp->udev,
 400                                           cardp->bulk_in_endpointAddr),
 401                           (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
 402                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
 403                           rinfo);
 404
 405         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 406
 407         /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
 408         if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
 409                 /* handle failure conditions */
 410                 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
 411                 ret = -1;
 412         } else {
 413                 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
 414                 ret = 0;
 415         }
 416
 417 rx_ret:
 418         return ret;
 419 }
 420
 421 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
 422 {
 423         return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
 424 }
 425
 426 static inline int if_usb_submit_rx_urb(wlan_private * priv)
 427 {
 428         return __if_usb_submit_rx_urb(priv, &if_usb_receive);
 429 }
 430
 431 static void if_usb_receive_fwload(struct urb *urb)
 432 {
 433         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 434         wlan_private *priv = rinfo->priv;
 435         struct sk_buff *skb = rinfo->skb;
 436         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 437         struct fwsyncheader *syncfwheader;
 438         struct bootcmdrespStr bootcmdresp;
 439
 440         if (urb->status) {
 441                 lbs_deb_usbd(&cardp->udev->dev,
 442                             "URB status is failed during fw load\n");
 443                 kfree_skb(skb);
 444                 return;
 445         }
 446
 447         if (cardp->bootcmdresp == 0) {
 448                 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
 449                         sizeof(bootcmdresp));
 450                 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
 451                         kfree_skb(skb);
 452                         if_usb_submit_rx_urb_fwload(priv);
 453                         cardp->bootcmdresp = 1;
 454                         lbs_deb_usbd(&cardp->udev->dev,
 455                                     "Received valid boot command response\n");
 456                         return;
 457                 }
 458                 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
 459                         lbs_pr_info(
 460                                 "boot cmd response wrong magic number (0x%x)\n",
 461                                 bootcmdresp.u32magicnumber);
 462                 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
 463                         lbs_pr_info(
 464                                 "boot cmd response cmd_tag error (%d)\n",
 465                                 bootcmdresp.u8cmd_tag);
 466                 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
 467                         lbs_pr_info(
 468                                 "boot cmd response result error (%d)\n",
 469                                 bootcmdresp.u8result);
 470                 } else {
 471                         cardp->bootcmdresp = 1;
 472                         lbs_deb_usbd(&cardp->udev->dev,
 473                                     "Received valid boot command response\n");
 474                 }
 475                 kfree_skb(skb);
 476                 if_usb_submit_rx_urb_fwload(priv);
 477                 return;
 478         }
 479
 480         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
 481         if (!syncfwheader) {
 482                 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
 483                 kfree_skb(skb);
 484                 return;
 485         }
 486
 487         memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
 488                         sizeof(struct fwsyncheader));
 489
 490         if (!syncfwheader->cmd) {
 491                 /*
 492                 lbs_deb_usbd(&cardp->udev->dev,
 493                             "FW received Blk with correct CRC\n");
 494                 lbs_deb_usbd(&cardp->udev->dev,
 495                             "FW received Blk seqnum = %d\n",
 496                        syncfwheader->seqnum);
 497                 */
 498                 cardp->CRC_OK = 1;
 499         } else {
 500                 lbs_deb_usbd(&cardp->udev->dev,
 501                             "FW received Blk with CRC error\n");
 502                 cardp->CRC_OK = 0;
 503         }
 504
 505         kfree_skb(skb);
 506
 507         if (cardp->fwfinalblk) {
 508                 cardp->fwdnldover = 1;
 509                 goto exit;
 510         }
 511
 512         if_prog_firmware(priv);
 513
 514         if_usb_submit_rx_urb_fwload(priv);
 515 exit:
 516         kfree(syncfwheader);
 517
 518         return;
 519
 520 }
 521
 522 #define MRVDRV_MIN_PKT_LEN      30
 523
 524 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 525                                        struct usb_card_rec *cardp,
 526                                        wlan_private *priv)
 527 {
 528         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
 529             MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
 530                 lbs_deb_usbd(&cardp->udev->dev,
 531                             "Packet length is Invalid\n");
 532                 kfree_skb(skb);
 533                 return;
 534         }
 535
 536         skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
 537         skb_put(skb, recvlength);
 538         skb_pull(skb, MESSAGE_HEADER_LEN);
 539         libertas_process_rxed_packet(priv, skb);
 540         priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
 541 }
 542
 543 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
 544                                       struct sk_buff *skb,
 545                                       struct usb_card_rec *cardp,
 546                                       wlan_private *priv)
 547 {
 548         u8 *cmdbuf;
 549         if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
 550                 lbs_deb_usbd(&cardp->udev->dev,
 551                             "The receive buffer is too large\n");
 552                 kfree_skb(skb);
 553                 return;
 554         }
 555
 556         if (!in_interrupt())
 557                 BUG();
 558
 559         spin_lock(&priv->adapter->driver_lock);
 560         /* take care of cur_cmd = NULL case by reading the
 561          * data to clear the interrupt */
 562         if (!priv->adapter->cur_cmd) {
 563                 cmdbuf = priv->wlan_dev.upld_buf;
 564                 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
 565         } else
 566                 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
 567
 568         cardp->usb_int_cause |= his_cmdupldrdy;
 569         priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
 570         memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
 571                priv->wlan_dev.upld_len);
 572
 573         kfree_skb(skb);
 574         libertas_interrupt(priv->wlan_dev.netdev);
 575         spin_unlock(&priv->adapter->driver_lock);
 576
 577         lbs_deb_usbd(&cardp->udev->dev,
 578                     "Wake up main thread to handle cmd response\n");
 579
 580         return;
 581 }
 582
 583 /**
 584  *  @brief This function reads of the packet into the upload buff,
 585  *  wake up the main thread and initialise the Rx callack.
 586  *
 587  *  @param urb          pointer to struct urb
 588  *  @return             N/A
 589  */
 590 static void if_usb_receive(struct urb *urb)
 591 {
 592         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 593         wlan_private *priv = rinfo->priv;
 594         struct sk_buff *skb = rinfo->skb;
 595         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 596
 597         int recvlength = urb->actual_length;
 598         u8 *recvbuff = NULL;
 599         u32 recvtype;
 600
 601         lbs_deb_enter(LBS_DEB_USB);
 602
 603         if (recvlength) {
 604                 if (urb->status) {
 605                         lbs_deb_usbd(&cardp->udev->dev,
 606                                     "URB status is failed\n");
 607                         kfree_skb(skb);
 608                         goto setup_for_next;
 609                 }
 610
 611                 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
 612                 memcpy(&recvtype, recvbuff, sizeof(u32));
 613                 lbs_deb_usbd(&cardp->udev->dev,
 614                             "Recv length = 0x%x\n", recvlength);
 615                 lbs_deb_usbd(&cardp->udev->dev,
 616                             "Receive type = 0x%X\n", recvtype);
 617                 recvtype = le32_to_cpu(recvtype);
 618                 lbs_deb_usbd(&cardp->udev->dev,
 619                             "Receive type after = 0x%X\n", recvtype);
 620         } else if (urb->status)
 621                 goto rx_exit;
 622
 623
 624         switch (recvtype) {
 625         case CMD_TYPE_DATA:
 626                 process_cmdtypedata(recvlength, skb, cardp, priv);
 627                 break;
 628
 629         case CMD_TYPE_REQUEST:
 630                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
 631                 break;
 632
 633         case CMD_TYPE_INDICATION:
 634                 /* Event cause handling */
 635                 spin_lock(&priv->adapter->driver_lock);
 636                 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
 637                 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
 638                             cardp->usb_event_cause);
 639                 if (cardp->usb_event_cause & 0xffff0000) {
 640                         libertas_send_tx_feedback(priv);
 641                         spin_unlock(&priv->adapter->driver_lock);
 642                         break;
 643                 }
 644                 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
 645                 cardp->usb_int_cause |= his_cardevent;
 646                 kfree_skb(skb);
 647                 libertas_interrupt(priv->wlan_dev.netdev);
 648                 spin_unlock(&priv->adapter->driver_lock);
 649                 goto rx_exit;
 650         default:
 651                 kfree_skb(skb);
 652                 break;
 653         }
 654
 655 setup_for_next:
 656         if_usb_submit_rx_urb(priv);
 657 rx_exit:
 658         lbs_deb_leave(LBS_DEB_USB);
 659 }
 660
 661 /**
 662  *  @brief This function downloads data to FW
 663  *  @param priv         pointer to wlan_private structure
 664  *  @param type         type of data
 665  *  @param buf          pointer to data buffer
 666  *  @param len          number of bytes
 667  *  @return             0 or -1
 668  */
 669 int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
 670 {
 671         int ret = -1;
 672         u32 tmp;
 673         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 674
 675         lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
 676         lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
 677
 678         if (type == MVMS_CMD) {
 679                 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
 680                 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
 681                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 682                        MESSAGE_HEADER_LEN);
 683
 684         } else {
 685                 tmp = cpu_to_le32(CMD_TYPE_DATA);
 686                 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
 687                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 688                        MESSAGE_HEADER_LEN);
 689         }
 690
 691         memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
 692
 693         ret =
 694             usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
 695
 696         return ret;
 697 }
 698
 699 /* called with adapter->driver_lock held */
 700 int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
 701 {
 702         struct usb_card_rec *cardp = priv->wlan_dev.card;
 703
 704         *ireg = cardp->usb_int_cause;
 705         cardp->usb_int_cause = 0;
 706
 707         lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
 708
 709         return 0;
 710 }
 711
 712 int libertas_sbi_read_event_cause(wlan_private * priv)
 713 {
 714         struct usb_card_rec *cardp = priv->wlan_dev.card;
 715         priv->adapter->eventcause = cardp->usb_event_cause;
 716         /* Re-submit rx urb here to avoid event lost issue */
 717         if_usb_submit_rx_urb(priv);
 718         return 0;
 719 }
 720
 721 int reset_device(wlan_private *priv)
 722 {
 723         int ret;
 724
 725         ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
 726                                     cmd_act_halt, 0, 0, NULL);
 727         msleep_interruptible(10);
 728
 729         return ret;
 730 }
 731
 732 int libertas_sbi_unregister_dev(wlan_private * priv)
 733 {
 734         int ret = 0;
 735
 736         /* Need to send a Reset command to device before USB resources freed
 737          * and wlan_remove_card() called, then device can handle FW download
 738          * again.
 739          */
 740         if (priv)
 741                 reset_device(priv);
 742
 743         return ret;
 744 }
 745
 746
 747 /**
 748  *  @brief  This function register usb device and initialize parameter
 749  *  @param              priv pointer to wlan_private
 750  *  @return             0 or -1
 751  */
 752 int libertas_sbi_register_dev(wlan_private * priv)
 753 {
 754         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 755
 756         lbs_deb_enter(LBS_DEB_USB);
 757
 758         cardp->priv = priv;
 759         cardp->eth_dev = priv->wlan_dev.netdev;
 760         priv->hotplug_device = &(cardp->udev->dev);
 761
 762         SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
 763
 764         lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
 765                     cardp->udev);
 766
 767         lbs_deb_leave(LBS_DEB_USB);
 768         return 0;
 769 }
 770
 771
 772
 773 int libertas_sbi_prog_firmware(wlan_private * priv)
 774 {
 775         struct usb_card_rec *cardp = priv->wlan_dev.card;
 776         int i = 0;
 777         static int reset_count = 10;
 778         int ret = 0;
 779
 780         lbs_deb_enter(LBS_DEB_USB);
 781
 782         cardp->rinfo.priv = priv;
 783
 784 restart:
 785         if (if_usb_submit_rx_urb_fwload(priv) < 0) {
 786                 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
 787                 ret = -1;
 788                 goto done;
 789         }
 790
 791         cardp->bootcmdresp = 0;
 792         do {
 793                 int j = 0;
 794                 i++;
 795                 /* Issue Boot command = 1, Boot from Download-FW */
 796                 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
 797                 /* wait for command response */
 798                 do {
 799                         j++;
 800                         msleep_interruptible(100);
 801                 } while (cardp->bootcmdresp == 0 && j < 10);
 802         } while (cardp->bootcmdresp == 0 && i < 5);
 803
 804         if (cardp->bootcmdresp == 0) {
 805                 if (--reset_count >= 0) {
 806                         libertas_do_reset(priv);
 807                         goto restart;
 808                 }
 809                 return -1;
 810         }
 811
 812         i = 0;
 813         priv->adapter->fw_ready = 0;
 814
 815         cardp->totalbytes = 0;
 816         cardp->fwlastblksent = 0;
 817         cardp->CRC_OK = 1;
 818         cardp->fwdnldover = 0;
 819         cardp->fwseqnum = -1;
 820         cardp->totalbytes = 0;
 821         cardp->fwfinalblk = 0;
 822
 823         if_prog_firmware(priv);
 824
 825         do {
 826                 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
 827                 i++;
 828                 msleep_interruptible(100);
 829                 if (priv->adapter->surpriseremoved || i >= 20)
 830                         break;
 831         } while (!cardp->fwdnldover);
 832
 833         if (!cardp->fwdnldover) {
 834                 lbs_pr_info("failed to load fw, resetting device!\n");
 835                 if (--reset_count >= 0) {
 836                         libertas_do_reset(priv);
 837                         goto restart;
 838                 }
 839
 840                 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
 841                 ret = -1;
 842                 goto done;
 843         }
 844
 845         if_usb_submit_rx_urb(priv);
 846
 847         /* Delay 200 ms to waiting for the FW ready */
 848         msleep_interruptible(200);
 849
 850         priv->adapter->fw_ready = 1;
 851
 852 done:
 853         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 854         return ret;
 855 }
 856
 857 #ifdef CONFIG_PM
 858 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
 859 {
 860         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 861         wlan_private *priv = cardp->priv;
 862
 863         lbs_deb_enter(LBS_DEB_USB);
 864
 865         if (priv->adapter->psstate != PS_STATE_FULL_POWER)
 866                 return -1;
 867
 868         netif_device_detach(cardp->eth_dev);
 869
 870         /* Unlink tx & rx urb */
 871         usb_kill_urb(cardp->tx_urb);
 872         usb_kill_urb(cardp->rx_urb);
 873
 874         cardp->rx_urb_recall = 1;
 875
 876         lbs_deb_leave(LBS_DEB_USB);
 877         return 0;
 878 }
 879
 880 static int if_usb_resume(struct usb_interface *intf)
 881 {
 882         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 883
 884         lbs_deb_enter(LBS_DEB_USB);
 885
 886         cardp->rx_urb_recall = 0;
 887
 888         if_usb_submit_rx_urb(cardp->priv);
 889
 890         netif_device_attach(cardp->eth_dev);
 891
 892         lbs_deb_leave(LBS_DEB_USB);
 893         return 0;
 894 }
 895 #else
 896 #define if_usb_suspend NULL
 897 #define if_usb_resume NULL
 898 #endif
 899
 900 static struct usb_driver if_usb_driver = {
 901         /* driver name */
 902         .name = usbdriver_name,
 903         /* probe function name */
 904         .probe = if_usb_probe,
 905         /* disconnect function  name */
 906         .disconnect = if_usb_disconnect,
 907         /* device signature table */
 908         .id_table = if_usb_table,
 909         .suspend = if_usb_suspend,
 910         .resume = if_usb_resume,
 911 };
 912
 913 /**
 914  *  @brief This function registers driver.
 915  *  @param add          pointer to add_card callback function
 916  *  @param remove       pointer to remove card callback function
 917  *  @param arg          pointer to call back function parameter
 918  *  @return             dummy success variable
 919  */
 920 int libertas_sbi_register(void)
 921 {
 922         /*
 923          * API registers the Marvell USB driver
 924          * to the USB system
 925          */
 926         usb_register(&if_usb_driver);
 927
 928         /* Return success to wlan layer */
 929         return 0;
 930 }
 931
 932 /**
 933  *  @brief This function removes usb driver.
 934  *  @return             N/A
 935  */
 936 void libertas_sbi_unregister(void)
 937 {
 938         /* API unregisters the driver from USB subsystem */
 939         usb_deregister(&if_usb_driver);
 940         return;
 941 }