SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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         {
  23                 USB_DEVICE(USB8388_VID_1, USB8388_PID_1),
  24         },
  25         {
  26                 USB_DEVICE(USB8388_VID_2, USB8388_PID_2),
  27         },
  28         {}      /* Terminating entry */
  29 };
  30
  31 MODULE_DEVICE_TABLE(usb, if_usb_table);
  32
  33 static void if_usb_receive(struct urb *urb);
  34 static void if_usb_receive_fwload(struct urb *urb);
  35
  36 /**
  37  *  @brief  call back function to handle the status of the URB
  38  *  @param urb          pointer to urb structure
  39  *  @return             N/A
  40  */
  41 static void if_usb_write_bulk_callback(struct urb *urb)
  42 {
  43         wlan_private *priv = (wlan_private *) (urb->context);
  44         wlan_adapter *adapter = priv->adapter;
  45         struct net_device *dev = priv->wlan_dev.netdev;
  46
  47         /* handle the transmission complete validations */
  48
  49         if (urb->status != 0) {
  50                 /* print the failure status number for debug */
  51                 lbs_pr_info("URB in failure status\n");
  52         } else {
  53                 lbs_dev_dbg(2, &urb->dev->dev, "URB status is successfull\n");
  54                 lbs_dev_dbg(2, &urb->dev->dev, "Actual length transmitted %d\n",
  55                        urb->actual_length);
  56                 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
  57                 /* Wake main thread if commands are pending */
  58                 if (!adapter->cur_cmd)
  59                         wake_up_interruptible(&priv->mainthread.waitq);
  60                 if ((adapter->connect_status == libertas_connected))
  61                         netif_wake_queue(dev);
  62         }
  63
  64         return;
  65 }
  66
  67 /**
  68  *  @brief  free tx/rx urb, skb and rx buffer
  69  *  @param cardp        pointer usb_card_rec
  70  *  @return             N/A
  71  */
  72 void if_usb_free(struct usb_card_rec *cardp)
  73 {
  74         ENTER();
  75
  76         /* Unlink tx & rx urb */
  77         usb_kill_urb(cardp->tx_urb);
  78         usb_kill_urb(cardp->rx_urb);
  79
  80         usb_free_urb(cardp->tx_urb);
  81         cardp->tx_urb = NULL;
  82
  83         usb_free_urb(cardp->rx_urb);
  84         cardp->rx_urb = NULL;
  85
  86         kfree(cardp->bulk_out_buffer);
  87         cardp->bulk_out_buffer = NULL;
  88
  89         LEAVE();
  90         return;
  91 }
  92
  93 /**
  94  *  @brief sets the configuration values
  95  *  @param ifnum        interface number
  96  *  @param id           pointer to usb_device_id
  97  *  @return             0 on success, error code on failure
  98  */
  99 static int if_usb_probe(struct usb_interface *intf,
 100                         const struct usb_device_id *id)
 101 {
 102         struct usb_device *udev;
 103         struct usb_host_interface *iface_desc;
 104         struct usb_endpoint_descriptor *endpoint;
 105         wlan_private *pwlanpriv;
 106         struct usb_card_rec *usb_cardp;
 107         int i;
 108
 109         udev = interface_to_usbdev(intf);
 110
 111         usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
 112         if (!usb_cardp) {
 113                 lbs_pr_err("Out of memory allocating private data.\n");
 114                 goto error;
 115         }
 116
 117         usb_cardp->udev = udev;
 118         iface_desc = intf->cur_altsetting;
 119
 120         lbs_dev_dbg(1, &udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
 121                " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
 122                udev->descriptor.bcdUSB,
 123                udev->descriptor.bDeviceClass,
 124                udev->descriptor.bDeviceSubClass,
 125                udev->descriptor.bDeviceProtocol);
 126
 127         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 128                 endpoint = &iface_desc->endpoint[i].desc;
 129                 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 130                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 131                         USB_ENDPOINT_XFER_BULK)) {
 132                         /* we found a bulk in endpoint */
 133                         lbs_dev_dbg(1, &udev->dev, "Bulk in size is %d\n",
 134                                endpoint->wMaxPacketSize);
 135                         if (!
 136                             (usb_cardp->rx_urb =
 137                              usb_alloc_urb(0, GFP_KERNEL))) {
 138                                 lbs_dev_dbg(1, &udev->dev,
 139                                        "Rx URB allocation failed\n");
 140                                 goto dealloc;
 141                         }
 142                         usb_cardp->rx_urb_recall = 0;
 143
 144                         usb_cardp->bulk_in_size =
 145                             endpoint->wMaxPacketSize;
 146                         usb_cardp->bulk_in_endpointAddr =
 147                             (endpoint->
 148                              bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 149                         lbs_dev_dbg(1, &udev->dev, "in_endpoint = %d\n",
 150                                endpoint->bEndpointAddress);
 151                 }
 152
 153                 if (((endpoint->
 154                       bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
 155                      USB_DIR_OUT)
 156                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 157                         USB_ENDPOINT_XFER_BULK)) {
 158                         /* We found bulk out endpoint */
 159                         if (!
 160                             (usb_cardp->tx_urb =
 161                              usb_alloc_urb(0, GFP_KERNEL))) {
 162                                 lbs_dev_dbg(1,&udev->dev,
 163                                        "Tx URB allocation failed\n");
 164                                 goto dealloc;
 165                         }
 166
 167                         usb_cardp->bulk_out_size =
 168                             endpoint->wMaxPacketSize;
 169                         lbs_dev_dbg(1, &udev->dev,
 170                                     "Bulk out size is %d\n",
 171                                     endpoint->wMaxPacketSize);
 172                         usb_cardp->bulk_out_endpointAddr =
 173                             endpoint->bEndpointAddress;
 174                         lbs_dev_dbg(1, &udev->dev, "out_endpoint = %d\n",
 175                                     endpoint->bEndpointAddress);
 176                         usb_cardp->bulk_out_buffer =
 177                             kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 178                                     GFP_KERNEL);
 179
 180                         if (!usb_cardp->bulk_out_buffer) {
 181                                 lbs_dev_dbg(1, &udev->dev,
 182                                        "Could not allocate buffer\n");
 183                                 goto dealloc;
 184                         }
 185                 }
 186         }
 187
 188
 189         /* At this point wlan_add_card() will be called.  Don't worry
 190          * about keeping pwlanpriv around since it will be set on our
 191          * usb device data in -> add() -> libertas_sbi_register_dev().
 192          */
 193         if (!(pwlanpriv = wlan_add_card(usb_cardp)))
 194                 goto dealloc;
 195
 196         usb_get_dev(udev);
 197         usb_set_intfdata(intf, usb_cardp);
 198
 199         /*
 200          * return card structure, which can be got back in the
 201          * diconnect function as the ptr
 202          * argument.
 203          */
 204         return 0;
 205
 206 dealloc:
 207         if_usb_free(usb_cardp);
 208
 209 error:
 210         return -ENOMEM;
 211 }
 212
 213 /**
 214  *  @brief free resource and cleanup
 215  *  @param udev         pointer to usb_device
 216  *  @param ptr          pointer to usb_cardp
 217  *  @return             N/A
 218  */
 219 static void if_usb_disconnect(struct usb_interface *intf)
 220 {
 221         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 222         wlan_private *priv = (wlan_private *) cardp->priv;
 223         wlan_adapter *adapter = NULL;
 224
 225         adapter = priv->adapter;
 226
 227         /*
 228          * Update Surprise removed to TRUE
 229          */
 230         adapter->surpriseremoved = 1;
 231
 232         /* card is removed and we can call wlan_remove_card */
 233         lbs_dev_dbg(1, &cardp->udev->dev, "call remove card\n");
 234         wlan_remove_card(cardp);
 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         lbs_dev_dbg(2, &cardp->udev->dev, "totalbytes = %d\n",
 270                     cardp->totalbytes);
 271
 272         memcpy(fwheader, &firmware[cardp->totalbytes],
 273                sizeof(struct fwheader));
 274
 275         cardp->fwlastblksent = cardp->totalbytes;
 276         cardp->totalbytes += sizeof(struct fwheader);
 277
 278         lbs_dev_dbg(2, &cardp->udev->dev,"Copy Data\n");
 279         memcpy(fwdata->data, &firmware[cardp->totalbytes],
 280                fwdata->fwheader.datalength);
 281
 282         lbs_dev_dbg(2, &cardp->udev->dev,
 283                     "Data length = %d\n", fwdata->fwheader.datalength);
 284
 285         cardp->fwseqnum = cardp->fwseqnum + 1;
 286
 287         fwdata->seqnum = cardp->fwseqnum;
 288         cardp->lastseqnum = fwdata->seqnum;
 289         cardp->totalbytes += fwdata->fwheader.datalength;
 290
 291         if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
 292                 lbs_dev_dbg(2, &cardp->udev->dev, "There is data to follow\n");
 293                 lbs_dev_dbg(2, &cardp->udev->dev,
 294                             "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
 295                             cardp->totalbytes);
 296                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 297                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 298
 299         } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
 300                 lbs_dev_dbg(2, &cardp->udev->dev,
 301                             "Host has finished FW downloading\n");
 302                 lbs_dev_dbg(2, &cardp->udev->dev,
 303                             "Donwloading FW JUMP BLOCK\n");
 304                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 305                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 306                 cardp->fwfinalblk = 1;
 307         }
 308
 309         lbs_dev_dbg(2, &cardp->udev->dev,
 310                     "The firmware download is done size is %d\n",
 311                     cardp->totalbytes);
 312
 313         kfree(fwdata);
 314
 315         return 0;
 316 }
 317
 318 static int libertas_do_reset(wlan_private *priv)
 319 {
 320         int ret;
 321         struct usb_card_rec *cardp = priv->wlan_dev.card;
 322
 323         ret = usb_reset_device(cardp->udev);
 324         if (!ret) {
 325                 msleep(10);
 326                 reset_device(priv);
 327                 msleep(10);
 328         }
 329         return ret;
 330 }
 331
 332 /**
 333  *  @brief This function transfer the data to the device.
 334  *  @param priv         pointer to wlan_private
 335  *  @param payload      pointer to payload data
 336  *  @param nb           data length
 337  *  @return             0 or -1
 338  */
 339 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
 340 {
 341         /* pointer to card structure */
 342         struct usb_card_rec *cardp = priv->wlan_dev.card;
 343         int ret = -1;
 344
 345         /* check if device is removed */
 346         if (priv->adapter->surpriseremoved) {
 347                 lbs_dev_dbg(1, &cardp->udev->dev, "Device removed\n");
 348                 goto tx_ret;
 349         }
 350
 351         usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
 352                           usb_sndbulkpipe(cardp->udev,
 353                                           cardp->bulk_out_endpointAddr),
 354                           payload, nb, if_usb_write_bulk_callback, priv);
 355
 356         cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
 357
 358         if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
 359                 /*  transfer failed */
 360                 lbs_dev_dbg(1, &cardp->udev->dev, "usb_submit_urb failed\n");
 361                 ret = -1;
 362         } else {
 363                 lbs_dev_dbg(2, &cardp->udev->dev, "usb_submit_urb success\n");
 364                 ret = 0;
 365         }
 366
 367 tx_ret:
 368         return ret;
 369 }
 370
 371 static int __if_usb_submit_rx_urb(wlan_private * priv,
 372                                   void (*callbackfn)
 373                                   (struct urb *urb))
 374 {
 375         struct usb_card_rec *cardp = priv->wlan_dev.card;
 376         struct sk_buff *skb;
 377         struct read_cb_info *rinfo = &cardp->rinfo;
 378         int ret = -1;
 379
 380         if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
 381                 lbs_pr_err("No free skb\n");
 382                 goto rx_ret;
 383         }
 384
 385         rinfo->skb = skb;
 386
 387         /* Fill the receive configuration URB and initialise the Rx call back */
 388         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
 389                           usb_rcvbulkpipe(cardp->udev,
 390                                           cardp->bulk_in_endpointAddr),
 391                           (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
 392                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
 393                           rinfo);
 394
 395         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 396
 397         lbs_dev_dbg(2, &cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb);
 398         if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
 399                 /* handle failure conditions */
 400                 lbs_dev_dbg(1, &cardp->udev->dev, "Submit Rx URB failed\n");
 401                 ret = -1;
 402         } else {
 403                 lbs_dev_dbg(2, &cardp->udev->dev, "Submit Rx URB success\n");
 404                 ret = 0;
 405         }
 406
 407 rx_ret:
 408         return ret;
 409 }
 410
 411 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
 412 {
 413         return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
 414 }
 415
 416 static inline int if_usb_submit_rx_urb(wlan_private * priv)
 417 {
 418         return __if_usb_submit_rx_urb(priv, &if_usb_receive);
 419 }
 420
 421 static void if_usb_receive_fwload(struct urb *urb)
 422 {
 423         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 424         wlan_private *priv = rinfo->priv;
 425         struct sk_buff *skb = rinfo->skb;
 426         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 427         struct fwsyncheader *syncfwheader;
 428         struct bootcmdrespStr bootcmdresp;
 429
 430         if (urb->status) {
 431                 lbs_dev_dbg(1, &cardp->udev->dev,
 432                             "URB status is failed during fw load\n");
 433                 kfree_skb(skb);
 434                 return;
 435         }
 436
 437         if (cardp->bootcmdresp == 0) {
 438                 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
 439                         sizeof(bootcmdresp));
 440                 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
 441                         kfree_skb(skb);
 442                         if_usb_submit_rx_urb_fwload(priv);
 443                         cardp->bootcmdresp = 1;
 444                         lbs_dev_dbg(1, &cardp->udev->dev,
 445                                     "Received valid boot command response\n");
 446                         return;
 447                 }
 448                 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
 449                         lbs_pr_info(
 450                                 "boot cmd response wrong magic number (0x%x)\n",
 451                                 bootcmdresp.u32magicnumber);
 452                 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
 453                         lbs_pr_info(
 454                                 "boot cmd response cmd_tag error (%d)\n",
 455                                 bootcmdresp.u8cmd_tag);
 456                 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
 457                         lbs_pr_info(
 458                                 "boot cmd response result error (%d)\n",
 459                                 bootcmdresp.u8result);
 460                 } else {
 461                         cardp->bootcmdresp = 1;
 462                         lbs_dev_dbg(1, &cardp->udev->dev,
 463                                     "Received valid boot command response\n");
 464                 }
 465                 kfree_skb(skb);
 466                 if_usb_submit_rx_urb_fwload(priv);
 467                 return;
 468         }
 469
 470         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
 471         if (!syncfwheader) {
 472                 lbs_dev_dbg(1, &cardp->udev->dev, "Failure to allocate syncfwheader\n");
 473                 kfree_skb(skb);
 474                 return;
 475         }
 476
 477         memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
 478                         sizeof(struct fwsyncheader));
 479
 480         if (!syncfwheader->cmd) {
 481                 lbs_dev_dbg(2, &cardp->udev->dev,
 482                             "FW received Blk with correct CRC\n");
 483                 lbs_dev_dbg(2, &cardp->udev->dev,
 484                             "FW received Blk seqnum = %d\n",
 485                        syncfwheader->seqnum);
 486                 cardp->CRC_OK = 1;
 487         } else {
 488                 lbs_dev_dbg(1, &cardp->udev->dev,
 489                             "FW received Blk with CRC error\n");
 490                 cardp->CRC_OK = 0;
 491         }
 492
 493         kfree_skb(skb);
 494
 495         if (cardp->fwfinalblk) {
 496                 cardp->fwdnldover = 1;
 497                 goto exit;
 498         }
 499
 500         if_prog_firmware(priv);
 501
 502         if_usb_submit_rx_urb_fwload(priv);
 503 exit:
 504         kfree(syncfwheader);
 505
 506         return;
 507
 508 }
 509
 510 #define MRVDRV_MIN_PKT_LEN      30
 511
 512 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 513                                        struct usb_card_rec *cardp,
 514                                        wlan_private *priv)
 515 {
 516         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
 517             MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
 518                 lbs_dev_dbg(1, &cardp->udev->dev,
 519                             "Packet length is Invalid\n");
 520                 kfree_skb(skb);
 521                 return;
 522         }
 523
 524         skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
 525         skb_put(skb, recvlength);
 526         skb_pull(skb, MESSAGE_HEADER_LEN);
 527         libertas_process_rxed_packet(priv, skb);
 528         priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
 529 }
 530
 531 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
 532                                       struct sk_buff *skb,
 533                                       struct usb_card_rec *cardp,
 534                                       wlan_private *priv)
 535 {
 536         u8 *cmdbuf;
 537         if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
 538                 lbs_dev_dbg(1, &cardp->udev->dev,
 539                             "The receive buffer is too large\n");
 540                 kfree_skb(skb);
 541                 return;
 542         }
 543
 544         if (!in_interrupt())
 545                 BUG();
 546
 547         spin_lock(&priv->adapter->driver_lock);
 548         /* take care of cur_cmd = NULL case by reading the
 549          * data to clear the interrupt */
 550         if (!priv->adapter->cur_cmd) {
 551                 cmdbuf = priv->wlan_dev.upld_buf;
 552                 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
 553         } else
 554                 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
 555
 556         cardp->usb_int_cause |= his_cmdupldrdy;
 557         priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN);
 558         memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
 559                priv->wlan_dev.upld_len);
 560
 561         kfree_skb(skb);
 562         libertas_interrupt(priv->wlan_dev.netdev);
 563         spin_unlock(&priv->adapter->driver_lock);
 564
 565         lbs_dev_dbg(1, &cardp->udev->dev,
 566                     "Wake up main thread to handle cmd response\n");
 567
 568         return;
 569 }
 570
 571 /**
 572  *  @brief This function reads of the packet into the upload buff,
 573  *  wake up the main thread and initialise the Rx callack.
 574  *
 575  *  @param urb          pointer to struct urb
 576  *  @return             N/A
 577  */
 578 static void if_usb_receive(struct urb *urb)
 579 {
 580         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 581         wlan_private *priv = rinfo->priv;
 582         struct sk_buff *skb = rinfo->skb;
 583         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 584
 585         int recvlength = urb->actual_length;
 586         u8 *recvbuff = NULL;
 587         u32 recvtype;
 588
 589         ENTER();
 590
 591         if (recvlength) {
 592                 if (urb->status) {
 593                         lbs_dev_dbg(1, &cardp->udev->dev,
 594                                     "URB status is failed\n");
 595                         kfree_skb(skb);
 596                         goto setup_for_next;
 597                 }
 598
 599                 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
 600                 memcpy(&recvtype, recvbuff, sizeof(u32));
 601                 lbs_dev_dbg(1, &cardp->udev->dev,
 602                             "Recv length = 0x%x\n", recvlength);
 603                 lbs_dev_dbg(1, &cardp->udev->dev,
 604                             "Receive type = 0x%X\n", recvtype);
 605                 recvtype = le32_to_cpu(recvtype);
 606                 lbs_dev_dbg(1, &cardp->udev->dev,
 607                             "Receive type after = 0x%X\n", recvtype);
 608         } else if (urb->status)
 609                 goto rx_exit;
 610
 611
 612         switch (recvtype) {
 613         case CMD_TYPE_DATA:
 614                 process_cmdtypedata(recvlength, skb, cardp, priv);
 615                 break;
 616
 617         case CMD_TYPE_REQUEST:
 618                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
 619                 break;
 620
 621         case CMD_TYPE_INDICATION:
 622                 /* Event cause handling */
 623                 spin_lock(&priv->adapter->driver_lock);
 624                 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
 625                 lbs_dev_dbg(1, &cardp->udev->dev,"**EVENT** 0x%X\n",
 626                             cardp->usb_event_cause);
 627                 if (cardp->usb_event_cause & 0xffff0000) {
 628                         libertas_send_tx_feedback(priv);
 629                         spin_unlock(&priv->adapter->driver_lock);
 630                         break;
 631                 }
 632                 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
 633                 cardp->usb_int_cause |= his_cardevent;
 634                 kfree_skb(skb);
 635                 libertas_interrupt(priv->wlan_dev.netdev);
 636                 spin_unlock(&priv->adapter->driver_lock);
 637                 goto rx_exit;
 638         default:
 639                 kfree_skb(skb);
 640                 break;
 641         }
 642
 643 setup_for_next:
 644         if_usb_submit_rx_urb(priv);
 645 rx_exit:
 646         LEAVE();
 647         return;
 648 }
 649
 650 /**
 651  *  @brief This function downloads data to FW
 652  *  @param priv         pointer to wlan_private structure
 653  *  @param type         type of data
 654  *  @param buf          pointer to data buffer
 655  *  @param len          number of bytes
 656  *  @return             0 or -1
 657  */
 658 int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
 659 {
 660         int ret = -1;
 661         u32 tmp;
 662         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 663
 664         lbs_dev_dbg(1, &cardp->udev->dev,"*** type = %u\n", type);
 665         lbs_dev_dbg(1, &cardp->udev->dev,"size after = %d\n", nb);
 666
 667         if (type == MVMS_CMD) {
 668                 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
 669                 priv->wlan_dev.dnld_sent = DNLD_CMD_SENT;
 670                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 671                        MESSAGE_HEADER_LEN);
 672
 673         } else {
 674                 tmp = cpu_to_le32(CMD_TYPE_DATA);
 675                 priv->wlan_dev.dnld_sent = DNLD_DATA_SENT;
 676                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 677                        MESSAGE_HEADER_LEN);
 678         }
 679
 680         memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
 681
 682         ret =
 683             usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
 684
 685         return ret;
 686 }
 687
 688 /* called with adapter->driver_lock held */
 689 int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg)
 690 {
 691         struct usb_card_rec *cardp = priv->wlan_dev.card;
 692
 693         *ireg = cardp->usb_int_cause;
 694         cardp->usb_int_cause = 0;
 695
 696         lbs_dev_dbg(1, &cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
 697
 698         return 0;
 699 }
 700
 701 int libertas_sbi_read_event_cause(wlan_private * priv)
 702 {
 703         struct usb_card_rec *cardp = priv->wlan_dev.card;
 704         priv->adapter->eventcause = cardp->usb_event_cause;
 705         /* Re-submit rx urb here to avoid event lost issue */
 706         if_usb_submit_rx_urb(priv);
 707         return 0;
 708 }
 709
 710 int reset_device(wlan_private *priv)
 711 {
 712         int ret;
 713
 714         ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
 715                                     cmd_act_halt, 0, 0, NULL);
 716         msleep_interruptible(10);
 717
 718         return ret;
 719 }
 720
 721 int libertas_sbi_unregister_dev(wlan_private * priv)
 722 {
 723         int ret = 0;
 724
 725         /* Need to send a Reset command to device before USB resources freed
 726          * and wlan_remove_card() called, then device can handle FW download
 727          * again.
 728          */
 729         if (priv)
 730                 reset_device(priv);
 731
 732         return ret;
 733 }
 734
 735
 736 /**
 737  *  @brief  This function register usb device and initialize parameter
 738  *  @param              priv pointer to wlan_private
 739  *  @return             0 or -1
 740  */
 741 int libertas_sbi_register_dev(wlan_private * priv)
 742 {
 743
 744         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card;
 745         ENTER();
 746
 747         cardp->priv = priv;
 748         cardp->eth_dev = priv->wlan_dev.netdev;
 749         priv->hotplug_device = &(cardp->udev->dev);
 750
 751         SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev));
 752
 753         lbs_dev_dbg(1, &cardp->udev->dev, "udev pointer is at %p\n",
 754                     cardp->udev);
 755
 756         LEAVE();
 757         return 0;
 758 }
 759
 760
 761
 762 int libertas_sbi_prog_firmware(wlan_private * priv)
 763 {
 764         struct usb_card_rec *cardp = priv->wlan_dev.card;
 765         int i = 0;
 766         static int reset_count = 10;
 767
 768         ENTER();
 769
 770         cardp->rinfo.priv = priv;
 771
 772 restart:
 773         if (if_usb_submit_rx_urb_fwload(priv) < 0) {
 774                 lbs_dev_dbg(1, &cardp->udev->dev, "URB submission is failed\n");
 775                 LEAVE();
 776                 return -1;
 777         }
 778
 779         cardp->bootcmdresp = 0;
 780         do {
 781                 int j = 0;
 782                 i++;
 783                 /* Issue Boot command = 1, Boot from Download-FW */
 784                 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
 785                 /* wait for command response */
 786                 do {
 787                         j++;
 788                         msleep_interruptible(100);
 789                 } while (cardp->bootcmdresp == 0 && j < 10);
 790         } while (cardp->bootcmdresp == 0 && i < 5);
 791
 792         if (cardp->bootcmdresp == 0) {
 793                 if (--reset_count >= 0) {
 794                         libertas_do_reset(priv);
 795                         goto restart;
 796                 }
 797                 return -1;
 798         }
 799
 800         i = 0;
 801         priv->adapter->fw_ready = 0;
 802
 803         cardp->totalbytes = 0;
 804         cardp->fwlastblksent = 0;
 805         cardp->CRC_OK = 1;
 806         cardp->fwdnldover = 0;
 807         cardp->fwseqnum = -1;
 808         cardp->totalbytes = 0;
 809         cardp->fwfinalblk = 0;
 810
 811         if_prog_firmware(priv);
 812
 813         do {
 814                 lbs_dev_dbg(1, &cardp->udev->dev,"Wlan sched timeout\n");
 815                 i++;
 816                 msleep_interruptible(100);
 817                 if (priv->adapter->surpriseremoved || i >= 20)
 818                         break;
 819         } while (!cardp->fwdnldover);
 820
 821         if (!cardp->fwdnldover) {
 822                 lbs_pr_info("failed to load fw, resetting device!\n");
 823                 if (--reset_count >= 0) {
 824                         libertas_do_reset(priv);
 825                         goto restart;
 826                 }
 827
 828                 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
 829                 LEAVE();
 830                 return -1;
 831         }
 832
 833         if_usb_submit_rx_urb(priv);
 834
 835         /* Delay 200 ms to waiting for the FW ready */
 836         msleep_interruptible(200);
 837
 838         priv->adapter->fw_ready = 1;
 839
 840         LEAVE();
 841         return 0;
 842 }
 843
 844 /**
 845  *  @brief Given a usb_card_rec return its wlan_private
 846  *  @param card         pointer to a usb_card_rec
 847  *  @return             pointer to wlan_private
 848  */
 849 wlan_private *libertas_sbi_get_priv(void *card)
 850 {
 851         struct usb_card_rec *cardp = card;
 852         return cardp->priv;
 853 }
 854
 855 #ifdef CONFIG_PM
 856 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
 857 {
 858         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 859         wlan_private *priv = cardp->priv;
 860
 861         ENTER();
 862
 863         if (priv->adapter->psstate != PS_STATE_FULL_POWER)
 864                 return -1;
 865
 866         netif_device_detach(cardp->eth_dev);
 867
 868         /* Unlink tx & rx urb */
 869         usb_kill_urb(cardp->tx_urb);
 870         usb_kill_urb(cardp->rx_urb);
 871
 872         cardp->rx_urb_recall = 1;
 873
 874         LEAVE();
 875         return 0;
 876 }
 877
 878 static int if_usb_resume(struct usb_interface *intf)
 879 {
 880         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 881
 882         ENTER();
 883
 884         cardp->rx_urb_recall = 0;
 885
 886         if_usb_submit_rx_urb(cardp->priv);
 887
 888         netif_device_attach(cardp->eth_dev);
 889
 890         LEAVE();
 891         return 0;
 892 }
 893 #else
 894 #define if_usb_suspend NULL
 895 #define if_usb_resume NULL
 896 #endif
 897
 898 static struct usb_driver if_usb_driver = {
 899         /* driver name */
 900         .name = usbdriver_name,
 901         /* probe function name */
 902         .probe = if_usb_probe,
 903         /* disconnect function  name */
 904         .disconnect = if_usb_disconnect,
 905         /* device signature table */
 906         .id_table = if_usb_table,
 907         .suspend = if_usb_suspend,
 908         .resume = if_usb_resume,
 909 };
 910
 911 /**
 912  *  @brief This function registers driver.
 913  *  @param add          pointer to add_card callback function
 914  *  @param remove       pointer to remove card callback function
 915  *  @param arg          pointer to call back function parameter
 916  *  @return             dummy success variable
 917  */
 918 int libertas_sbi_register(void)
 919 {
 920         /*
 921          * API registers the Marvell USB driver
 922          * to the USB system
 923          */
 924         usb_register(&if_usb_driver);
 925
 926         /* Return success to wlan layer */
 927         return 0;
 928 }
 929
 930 /**
 931  *  @brief This function removes usb driver.
 932  *  @return             N/A
 933  */
 934 void libertas_sbi_unregister(void)
 935 {
 936         /* API unregisters the driver from USB subsystem */
 937         usb_deregister(&if_usb_driver);
 938         return;
 939 }