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