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/moduleparam.h>
   6 #include <linux/firmware.h>
   7 #include <linux/netdevice.h>
   8 #include <linux/list.h>
   9 #include <linux/usb.h>
  10
  11 #define DRV_NAME "usb8xxx"
  12
  13 #include "host.h"
  14 #include "decl.h"
  15 #include "defs.h"
  16 #include "dev.h"
  17 #include "if_usb.h"
  18
  19 #define MESSAGE_HEADER_LEN      4
  20
  21 static const char usbdriver_name[] = "usb8xxx";
  22 static u8 *default_fw_name = "usb8388.bin";
  23
  24 char *libertas_fw_name = NULL;
  25 module_param_named(fw_name, libertas_fw_name, charp, 0644);
  26
  27 /*
  28  * We need to send a RESET command to all USB devices before
  29  * we tear down the USB connection. Otherwise we would not
  30  * be able to re-init device the device if the module gets
  31  * loaded again. This is a list of all initialized USB devices,
  32  * for the reset code see if_usb_reset_device()
  33 */
  34 static LIST_HEAD(usb_devices);
  35
  36 static struct usb_device_id if_usb_table[] = {
  37         /* Enter the device signature inside */
  38         { USB_DEVICE(0x1286, 0x2001) },
  39         { USB_DEVICE(0x05a3, 0x8388) },
  40         {}      /* Terminating entry */
  41 };
  42
  43 MODULE_DEVICE_TABLE(usb, if_usb_table);
  44
  45 static void if_usb_receive(struct urb *urb);
  46 static void if_usb_receive_fwload(struct urb *urb);
  47 static int if_usb_reset_device(wlan_private *priv);
  48 static int if_usb_register_dev(wlan_private * priv);
  49 static int if_usb_unregister_dev(wlan_private *);
  50 static int if_usb_prog_firmware(wlan_private *);
  51 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb);
  52 static int if_usb_get_int_status(wlan_private * priv, u8 *);
  53 static int if_usb_read_event_cause(wlan_private *);
  54
  55 /**
  56  *  @brief  call back function to handle the status of the URB
  57  *  @param urb          pointer to urb structure
  58  *  @return             N/A
  59  */
  60 static void if_usb_write_bulk_callback(struct urb *urb)
  61 {
  62         wlan_private *priv = (wlan_private *) (urb->context);
  63         wlan_adapter *adapter = priv->adapter;
  64         struct net_device *dev = priv->dev;
  65
  66         /* handle the transmission complete validations */
  67
  68         if (urb->status != 0) {
  69                 /* print the failure status number for debug */
  70                 lbs_pr_info("URB in failure status: %d\n", urb->status);
  71         } else {
  72                 /*
  73                 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
  74                 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
  75                        urb->actual_length);
  76                 */
  77                 priv->dnld_sent = DNLD_RES_RECEIVED;
  78                 /* Wake main thread if commands are pending */
  79                 if (!adapter->cur_cmd)
  80                         wake_up_interruptible(&priv->mainthread.waitq);
  81                 if ((adapter->connect_status == libertas_connected)) {
  82                         netif_wake_queue(dev);
  83                         netif_wake_queue(priv->mesh_dev);
  84                 }
  85         }
  86
  87         return;
  88 }
  89
  90 /**
  91  *  @brief  free tx/rx urb, skb and rx buffer
  92  *  @param cardp        pointer usb_card_rec
  93  *  @return             N/A
  94  */
  95 void if_usb_free(struct usb_card_rec *cardp)
  96 {
  97         lbs_deb_enter(LBS_DEB_USB);
  98
  99         /* Unlink tx & rx urb */
 100         usb_kill_urb(cardp->tx_urb);
 101         usb_kill_urb(cardp->rx_urb);
 102
 103         usb_free_urb(cardp->tx_urb);
 104         cardp->tx_urb = NULL;
 105
 106         usb_free_urb(cardp->rx_urb);
 107         cardp->rx_urb = NULL;
 108
 109         kfree(cardp->bulk_out_buffer);
 110         cardp->bulk_out_buffer = NULL;
 111
 112         lbs_deb_leave(LBS_DEB_USB);
 113 }
 114
 115 /**
 116  *  @brief sets the configuration values
 117  *  @param ifnum        interface number
 118  *  @param id           pointer to usb_device_id
 119  *  @return             0 on success, error code on failure
 120  */
 121 static int if_usb_probe(struct usb_interface *intf,
 122                         const struct usb_device_id *id)
 123 {
 124         struct usb_device *udev;
 125         struct usb_host_interface *iface_desc;
 126         struct usb_endpoint_descriptor *endpoint;
 127         wlan_private *priv;
 128         struct usb_card_rec *cardp;
 129         int i;
 130
 131         udev = interface_to_usbdev(intf);
 132
 133         cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
 134         if (!cardp) {
 135                 lbs_pr_err("Out of memory allocating private data.\n");
 136                 goto error;
 137         }
 138
 139         cardp->udev = udev;
 140         iface_desc = intf->cur_altsetting;
 141
 142         lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
 143                " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
 144                udev->descriptor.bcdUSB,
 145                udev->descriptor.bDeviceClass,
 146                udev->descriptor.bDeviceSubClass,
 147                udev->descriptor.bDeviceProtocol);
 148
 149         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 150                 endpoint = &iface_desc->endpoint[i].desc;
 151                 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 152                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 153                         USB_ENDPOINT_XFER_BULK)) {
 154                         /* we found a bulk in endpoint */
 155                         lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
 156                                endpoint->wMaxPacketSize);
 157                         if (!
 158                             (cardp->rx_urb =
 159                              usb_alloc_urb(0, GFP_KERNEL))) {
 160                                 lbs_deb_usbd(&udev->dev,
 161                                        "Rx URB allocation failed\n");
 162                                 goto dealloc;
 163                         }
 164                         cardp->rx_urb_recall = 0;
 165
 166                         cardp->bulk_in_size =
 167                             endpoint->wMaxPacketSize;
 168                         cardp->bulk_in_endpointAddr =
 169                             (endpoint->
 170                              bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 171                         lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
 172                                endpoint->bEndpointAddress);
 173                 }
 174
 175                 if (((endpoint->
 176                       bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
 177                      USB_DIR_OUT)
 178                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 179                         USB_ENDPOINT_XFER_BULK)) {
 180                         /* We found bulk out endpoint */
 181                         if (!
 182                             (cardp->tx_urb =
 183                              usb_alloc_urb(0, GFP_KERNEL))) {
 184                                 lbs_deb_usbd(&udev->dev,
 185                                        "Tx URB allocation failed\n");
 186                                 goto dealloc;
 187                         }
 188
 189                         cardp->bulk_out_size =
 190                             endpoint->wMaxPacketSize;
 191                         lbs_deb_usbd(&udev->dev,
 192                                     "Bulk out size is %d\n",
 193                                     endpoint->wMaxPacketSize);
 194                         cardp->bulk_out_endpointAddr =
 195                             endpoint->bEndpointAddress;
 196                         lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
 197                                     endpoint->bEndpointAddress);
 198                         cardp->bulk_out_buffer =
 199                             kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 200                                     GFP_KERNEL);
 201
 202                         if (!cardp->bulk_out_buffer) {
 203                                 lbs_deb_usbd(&udev->dev,
 204                                        "Could not allocate buffer\n");
 205                                 goto dealloc;
 206                         }
 207                 }
 208         }
 209
 210         if (!(priv = libertas_add_card(cardp, &udev->dev)))
 211                 goto dealloc;
 212
 213         if (libertas_add_mesh(priv, &udev->dev))
 214                 goto err_add_mesh;
 215
 216         priv->hw_register_dev = if_usb_register_dev;
 217         priv->hw_unregister_dev = if_usb_unregister_dev;
 218         priv->hw_prog_firmware = if_usb_prog_firmware;
 219         priv->hw_host_to_card = if_usb_host_to_card;
 220         priv->hw_get_int_status = if_usb_get_int_status;
 221         priv->hw_read_event_cause = if_usb_read_event_cause;
 222
 223         if (libertas_activate_card(priv, libertas_fw_name))
 224                 goto err_activate_card;
 225
 226         list_add_tail(&cardp->list, &usb_devices);
 227
 228         usb_get_dev(udev);
 229         usb_set_intfdata(intf, cardp);
 230
 231         return 0;
 232
 233 err_activate_card:
 234         unregister_netdev(priv->mesh_dev);
 235         free_netdev(priv->mesh_dev);
 236 err_add_mesh:
 237         free_netdev(priv->dev);
 238         kfree(priv->adapter);
 239 dealloc:
 240         if_usb_free(cardp);
 241
 242 error:
 243         return -ENOMEM;
 244 }
 245
 246 /**
 247  *  @brief free resource and cleanup
 248  *  @param intf         USB interface structure
 249  *  @return             N/A
 250  */
 251 static void if_usb_disconnect(struct usb_interface *intf)
 252 {
 253         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 254         wlan_private *priv = (wlan_private *) cardp->priv;
 255         wlan_adapter *adapter = NULL;
 256
 257         adapter = priv->adapter;
 258
 259         /*
 260          * Update Surprise removed to TRUE
 261          */
 262         adapter->surpriseremoved = 1;
 263
 264         list_del(&cardp->list);
 265
 266         /* card is removed and we can call wlan_remove_card */
 267         lbs_deb_usbd(&cardp->udev->dev, "call remove card\n");
 268         libertas_remove_mesh(priv);
 269         libertas_remove_card(priv);
 270
 271         /* Unlink and free urb */
 272         if_usb_free(cardp);
 273
 274         usb_set_intfdata(intf, NULL);
 275         usb_put_dev(interface_to_usbdev(intf));
 276
 277         return;
 278 }
 279
 280 /**
 281  *  @brief  This function download FW
 282  *  @param priv         pointer to wlan_private
 283  *  @return             0
 284  */
 285 static int if_prog_firmware(wlan_private * priv)
 286 {
 287         struct usb_card_rec *cardp = priv->card;
 288         struct FWData *fwdata;
 289         struct fwheader *fwheader;
 290         u8 *firmware = priv->firmware->data;
 291
 292         fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
 293
 294         if (!fwdata)
 295                 return -1;
 296
 297         fwheader = &fwdata->fwheader;
 298
 299         if (!cardp->CRC_OK) {
 300                 cardp->totalbytes = cardp->fwlastblksent;
 301                 cardp->fwseqnum = cardp->lastseqnum - 1;
 302         }
 303
 304         /*
 305         lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
 306                     cardp->totalbytes);
 307         */
 308
 309         memcpy(fwheader, &firmware[cardp->totalbytes],
 310                sizeof(struct fwheader));
 311
 312         cardp->fwlastblksent = cardp->totalbytes;
 313         cardp->totalbytes += sizeof(struct fwheader);
 314
 315         /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
 316         memcpy(fwdata->data, &firmware[cardp->totalbytes],
 317                fwdata->fwheader.datalength);
 318
 319         /*
 320         lbs_deb_usbd(&cardp->udev->dev,
 321                     "Data length = %d\n", fwdata->fwheader.datalength);
 322         */
 323
 324         cardp->fwseqnum = cardp->fwseqnum + 1;
 325
 326         fwdata->seqnum = cardp->fwseqnum;
 327         cardp->lastseqnum = fwdata->seqnum;
 328         cardp->totalbytes += fwdata->fwheader.datalength;
 329
 330         if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) {
 331                 /*
 332                 lbs_deb_usbd(&cardp->udev->dev, "There is data to follow\n");
 333                 lbs_deb_usbd(&cardp->udev->dev,
 334                             "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
 335                             cardp->totalbytes);
 336                 */
 337                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 338                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 339
 340         } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) {
 341                 /*
 342                 lbs_deb_usbd(&cardp->udev->dev,
 343                             "Host has finished FW downloading\n");
 344                 lbs_deb_usbd(&cardp->udev->dev,
 345                             "Donwloading FW JUMP BLOCK\n");
 346                 */
 347                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 348                 usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 349                 cardp->fwfinalblk = 1;
 350         }
 351
 352         /*
 353         lbs_deb_usbd(&cardp->udev->dev,
 354                     "The firmware download is done size is %d\n",
 355                     cardp->totalbytes);
 356         */
 357
 358         kfree(fwdata);
 359
 360         return 0;
 361 }
 362
 363 static int libertas_do_reset(wlan_private *priv)
 364 {
 365         int ret;
 366         struct usb_card_rec *cardp = priv->card;
 367
 368         lbs_deb_enter(LBS_DEB_USB);
 369
 370         ret = usb_reset_device(cardp->udev);
 371         if (!ret) {
 372                 msleep(10);
 373                 if_usb_reset_device(priv);
 374                 msleep(10);
 375         }
 376
 377         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 378
 379         return ret;
 380 }
 381
 382 /**
 383  *  @brief This function transfer the data to the device.
 384  *  @param priv         pointer to wlan_private
 385  *  @param payload      pointer to payload data
 386  *  @param nb           data length
 387  *  @return             0 or -1
 388  */
 389 int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb)
 390 {
 391         /* pointer to card structure */
 392         struct usb_card_rec *cardp = priv->card;
 393         int ret = -1;
 394
 395         /* check if device is removed */
 396         if (priv->adapter->surpriseremoved) {
 397                 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
 398                 goto tx_ret;
 399         }
 400
 401         usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
 402                           usb_sndbulkpipe(cardp->udev,
 403                                           cardp->bulk_out_endpointAddr),
 404                           payload, nb, if_usb_write_bulk_callback, priv);
 405
 406         cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
 407
 408         if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
 409                 /*  transfer failed */
 410                 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed\n");
 411                 ret = -1;
 412         } else {
 413                 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
 414                 ret = 0;
 415         }
 416
 417 tx_ret:
 418         return ret;
 419 }
 420
 421 static int __if_usb_submit_rx_urb(wlan_private * priv,
 422                                   void (*callbackfn)
 423                                   (struct urb *urb))
 424 {
 425         struct usb_card_rec *cardp = priv->card;
 426         struct sk_buff *skb;
 427         struct read_cb_info *rinfo = &cardp->rinfo;
 428         int ret = -1;
 429
 430         if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
 431                 lbs_pr_err("No free skb\n");
 432                 goto rx_ret;
 433         }
 434
 435         rinfo->skb = skb;
 436
 437         /* Fill the receive configuration URB and initialise the Rx call back */
 438         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
 439                           usb_rcvbulkpipe(cardp->udev,
 440                                           cardp->bulk_in_endpointAddr),
 441                           (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
 442                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
 443                           rinfo);
 444
 445         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 446
 447         /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
 448         if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
 449                 /* handle failure conditions */
 450                 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed\n");
 451                 ret = -1;
 452         } else {
 453                 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
 454                 ret = 0;
 455         }
 456
 457 rx_ret:
 458         return ret;
 459 }
 460
 461 static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv)
 462 {
 463         return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload);
 464 }
 465
 466 static inline int if_usb_submit_rx_urb(wlan_private * priv)
 467 {
 468         return __if_usb_submit_rx_urb(priv, &if_usb_receive);
 469 }
 470
 471 static void if_usb_receive_fwload(struct urb *urb)
 472 {
 473         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 474         wlan_private *priv = rinfo->priv;
 475         struct sk_buff *skb = rinfo->skb;
 476         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
 477         struct fwsyncheader *syncfwheader;
 478         struct bootcmdrespStr bootcmdresp;
 479
 480         if (urb->status) {
 481                 lbs_deb_usbd(&cardp->udev->dev,
 482                             "URB status is failed during fw load\n");
 483                 kfree_skb(skb);
 484                 return;
 485         }
 486
 487         if (cardp->bootcmdresp == 0) {
 488                 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
 489                         sizeof(bootcmdresp));
 490                 if (cardp->udev->descriptor.bcdDevice < 0x3106) {
 491                         kfree_skb(skb);
 492                         if_usb_submit_rx_urb_fwload(priv);
 493                         cardp->bootcmdresp = 1;
 494                         lbs_deb_usbd(&cardp->udev->dev,
 495                                     "Received valid boot command response\n");
 496                         return;
 497                 }
 498                 if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) {
 499                         lbs_pr_info(
 500                                 "boot cmd response wrong magic number (0x%x)\n",
 501                                 bootcmdresp.u32magicnumber);
 502                 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
 503                         lbs_pr_info(
 504                                 "boot cmd response cmd_tag error (%d)\n",
 505                                 bootcmdresp.u8cmd_tag);
 506                 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
 507                         lbs_pr_info(
 508                                 "boot cmd response result error (%d)\n",
 509                                 bootcmdresp.u8result);
 510                 } else {
 511                         cardp->bootcmdresp = 1;
 512                         lbs_deb_usbd(&cardp->udev->dev,
 513                                     "Received valid boot command response\n");
 514                 }
 515                 kfree_skb(skb);
 516                 if_usb_submit_rx_urb_fwload(priv);
 517                 return;
 518         }
 519
 520         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
 521         if (!syncfwheader) {
 522                 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
 523                 kfree_skb(skb);
 524                 return;
 525         }
 526
 527         memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
 528                         sizeof(struct fwsyncheader));
 529
 530         if (!syncfwheader->cmd) {
 531                 /*
 532                 lbs_deb_usbd(&cardp->udev->dev,
 533                             "FW received Blk with correct CRC\n");
 534                 lbs_deb_usbd(&cardp->udev->dev,
 535                             "FW received Blk seqnum = %d\n",
 536                        syncfwheader->seqnum);
 537                 */
 538                 cardp->CRC_OK = 1;
 539         } else {
 540                 lbs_deb_usbd(&cardp->udev->dev,
 541                             "FW received Blk with CRC error\n");
 542                 cardp->CRC_OK = 0;
 543         }
 544
 545         kfree_skb(skb);
 546
 547         if (cardp->fwfinalblk) {
 548                 cardp->fwdnldover = 1;
 549                 goto exit;
 550         }
 551
 552         if_prog_firmware(priv);
 553
 554         if_usb_submit_rx_urb_fwload(priv);
 555 exit:
 556         kfree(syncfwheader);
 557
 558         return;
 559
 560 }
 561
 562 #define MRVDRV_MIN_PKT_LEN      30
 563
 564 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 565                                        struct usb_card_rec *cardp,
 566                                        wlan_private *priv)
 567 {
 568         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
 569             MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
 570                 lbs_deb_usbd(&cardp->udev->dev,
 571                             "Packet length is Invalid\n");
 572                 kfree_skb(skb);
 573                 return;
 574         }
 575
 576         skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
 577         skb_put(skb, recvlength);
 578         skb_pull(skb, MESSAGE_HEADER_LEN);
 579         libertas_process_rxed_packet(priv, skb);
 580         priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
 581 }
 582
 583 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
 584                                       struct sk_buff *skb,
 585                                       struct usb_card_rec *cardp,
 586                                       wlan_private *priv)
 587 {
 588         u8 *cmdbuf;
 589         if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) {
 590                 lbs_deb_usbd(&cardp->udev->dev,
 591                             "The receive buffer is too large\n");
 592                 kfree_skb(skb);
 593                 return;
 594         }
 595
 596         if (!in_interrupt())
 597                 BUG();
 598
 599         spin_lock(&priv->adapter->driver_lock);
 600         /* take care of cur_cmd = NULL case by reading the
 601          * data to clear the interrupt */
 602         if (!priv->adapter->cur_cmd) {
 603                 cmdbuf = priv->upld_buf;
 604                 priv->adapter->hisregcpy &= ~his_cmdupldrdy;
 605         } else
 606                 cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr;
 607
 608         cardp->usb_int_cause |= his_cmdupldrdy;
 609         priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
 610         memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
 611                priv->upld_len);
 612
 613         kfree_skb(skb);
 614         libertas_interrupt(priv->dev);
 615         spin_unlock(&priv->adapter->driver_lock);
 616
 617         lbs_deb_usbd(&cardp->udev->dev,
 618                     "Wake up main thread to handle cmd response\n");
 619
 620         return;
 621 }
 622
 623 /**
 624  *  @brief This function reads of the packet into the upload buff,
 625  *  wake up the main thread and initialise the Rx callack.
 626  *
 627  *  @param urb          pointer to struct urb
 628  *  @return             N/A
 629  */
 630 static void if_usb_receive(struct urb *urb)
 631 {
 632         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 633         wlan_private *priv = rinfo->priv;
 634         struct sk_buff *skb = rinfo->skb;
 635         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
 636
 637         int recvlength = urb->actual_length;
 638         u8 *recvbuff = NULL;
 639         u32 recvtype;
 640
 641         lbs_deb_enter(LBS_DEB_USB);
 642
 643         if (recvlength) {
 644                 if (urb->status) {
 645                         lbs_deb_usbd(&cardp->udev->dev,
 646                                     "URB status is failed\n");
 647                         kfree_skb(skb);
 648                         goto setup_for_next;
 649                 }
 650
 651                 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
 652                 memcpy(&recvtype, recvbuff, sizeof(u32));
 653                 lbs_deb_usbd(&cardp->udev->dev,
 654                             "Recv length = 0x%x\n", recvlength);
 655                 lbs_deb_usbd(&cardp->udev->dev,
 656                             "Receive type = 0x%X\n", recvtype);
 657                 recvtype = le32_to_cpu(recvtype);
 658                 lbs_deb_usbd(&cardp->udev->dev,
 659                             "Receive type after = 0x%X\n", recvtype);
 660         } else if (urb->status)
 661                 goto rx_exit;
 662
 663
 664         switch (recvtype) {
 665         case CMD_TYPE_DATA:
 666                 process_cmdtypedata(recvlength, skb, cardp, priv);
 667                 break;
 668
 669         case CMD_TYPE_REQUEST:
 670                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
 671                 break;
 672
 673         case CMD_TYPE_INDICATION:
 674                 /* Event cause handling */
 675                 spin_lock(&priv->adapter->driver_lock);
 676                 cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN);
 677                 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
 678                             cardp->usb_event_cause);
 679                 if (cardp->usb_event_cause & 0xffff0000) {
 680                         libertas_send_tx_feedback(priv);
 681                         spin_unlock(&priv->adapter->driver_lock);
 682                         break;
 683                 }
 684                 cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3;
 685                 cardp->usb_int_cause |= his_cardevent;
 686                 kfree_skb(skb);
 687                 libertas_interrupt(priv->dev);
 688                 spin_unlock(&priv->adapter->driver_lock);
 689                 goto rx_exit;
 690         default:
 691                 kfree_skb(skb);
 692                 break;
 693         }
 694
 695 setup_for_next:
 696         if_usb_submit_rx_urb(priv);
 697 rx_exit:
 698         lbs_deb_leave(LBS_DEB_USB);
 699 }
 700
 701 /**
 702  *  @brief This function downloads data to FW
 703  *  @param priv         pointer to wlan_private structure
 704  *  @param type         type of data
 705  *  @param buf          pointer to data buffer
 706  *  @param len          number of bytes
 707  *  @return             0 or -1
 708  */
 709 static int if_usb_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb)
 710 {
 711         int ret = -1;
 712         u32 tmp;
 713         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
 714
 715         lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
 716         lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
 717
 718         if (type == MVMS_CMD) {
 719                 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
 720                 priv->dnld_sent = DNLD_CMD_SENT;
 721                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 722                        MESSAGE_HEADER_LEN);
 723
 724         } else {
 725                 tmp = cpu_to_le32(CMD_TYPE_DATA);
 726                 priv->dnld_sent = DNLD_DATA_SENT;
 727                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 728                        MESSAGE_HEADER_LEN);
 729         }
 730
 731         memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
 732
 733         ret =
 734             usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN);
 735
 736         return ret;
 737 }
 738
 739 /* called with adapter->driver_lock held */
 740 static int if_usb_get_int_status(wlan_private * priv, u8 * ireg)
 741 {
 742         struct usb_card_rec *cardp = priv->card;
 743
 744         *ireg = cardp->usb_int_cause;
 745         cardp->usb_int_cause = 0;
 746
 747         lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
 748
 749         return 0;
 750 }
 751
 752 static int if_usb_read_event_cause(wlan_private * priv)
 753 {
 754         struct usb_card_rec *cardp = priv->card;
 755         priv->adapter->eventcause = cardp->usb_event_cause;
 756         /* Re-submit rx urb here to avoid event lost issue */
 757         if_usb_submit_rx_urb(priv);
 758         return 0;
 759 }
 760
 761 static int if_usb_reset_device(wlan_private *priv)
 762 {
 763         int ret;
 764
 765         lbs_deb_enter(LBS_DEB_USB);
 766         ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset,
 767                                     cmd_act_halt, 0, 0, NULL);
 768         msleep_interruptible(10);
 769
 770         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 771         return ret;
 772 }
 773
 774 static int if_usb_unregister_dev(wlan_private * priv)
 775 {
 776         int ret = 0;
 777
 778         /* Need to send a Reset command to device before USB resources freed
 779          * and wlan_remove_card() called, then device can handle FW download
 780          * again.
 781          */
 782         if (priv)
 783                 if_usb_reset_device(priv);
 784
 785         return ret;
 786 }
 787
 788
 789 /**
 790  *  @brief  This function register usb device and initialize parameter
 791  *  @param              priv pointer to wlan_private
 792  *  @return             0 or -1
 793  */
 794 static int if_usb_register_dev(wlan_private * priv)
 795 {
 796         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
 797
 798         lbs_deb_enter(LBS_DEB_USB);
 799
 800         cardp->priv = priv;
 801         cardp->eth_dev = priv->dev;
 802         priv->hotplug_device = &(cardp->udev->dev);
 803
 804         lbs_deb_usbd(&cardp->udev->dev, "udev pointer is at %p\n",
 805                     cardp->udev);
 806
 807         lbs_deb_leave(LBS_DEB_USB);
 808         return 0;
 809 }
 810
 811
 812
 813 static int if_usb_prog_firmware(wlan_private * priv)
 814 {
 815         struct usb_card_rec *cardp = priv->card;
 816         int i = 0;
 817         static int reset_count = 10;
 818         int ret = 0;
 819
 820         lbs_deb_enter(LBS_DEB_USB);
 821
 822         cardp->rinfo.priv = priv;
 823
 824 restart:
 825         if (if_usb_submit_rx_urb_fwload(priv) < 0) {
 826                 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
 827                 ret = -1;
 828                 goto done;
 829         }
 830
 831         cardp->bootcmdresp = 0;
 832         do {
 833                 int j = 0;
 834                 i++;
 835                 /* Issue Boot command = 1, Boot from Download-FW */
 836                 if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB);
 837                 /* wait for command response */
 838                 do {
 839                         j++;
 840                         msleep_interruptible(100);
 841                 } while (cardp->bootcmdresp == 0 && j < 10);
 842         } while (cardp->bootcmdresp == 0 && i < 5);
 843
 844         if (cardp->bootcmdresp == 0) {
 845                 if (--reset_count >= 0) {
 846                         libertas_do_reset(priv);
 847                         goto restart;
 848                 }
 849                 return -1;
 850         }
 851
 852         i = 0;
 853         priv->adapter->fw_ready = 0;
 854
 855         cardp->totalbytes = 0;
 856         cardp->fwlastblksent = 0;
 857         cardp->CRC_OK = 1;
 858         cardp->fwdnldover = 0;
 859         cardp->fwseqnum = -1;
 860         cardp->totalbytes = 0;
 861         cardp->fwfinalblk = 0;
 862
 863         if_prog_firmware(priv);
 864
 865         do {
 866                 lbs_deb_usbd(&cardp->udev->dev,"Wlan sched timeout\n");
 867                 i++;
 868                 msleep_interruptible(100);
 869                 if (priv->adapter->surpriseremoved || i >= 20)
 870                         break;
 871         } while (!cardp->fwdnldover);
 872
 873         if (!cardp->fwdnldover) {
 874                 lbs_pr_info("failed to load fw, resetting device!\n");
 875                 if (--reset_count >= 0) {
 876                         libertas_do_reset(priv);
 877                         goto restart;
 878                 }
 879
 880                 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
 881                 ret = -1;
 882                 goto done;
 883         }
 884
 885         if_usb_submit_rx_urb(priv);
 886
 887         /* Delay 200 ms to waiting for the FW ready */
 888         msleep_interruptible(200);
 889
 890         priv->adapter->fw_ready = 1;
 891
 892 done:
 893         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 894         return ret;
 895 }
 896
 897 #ifdef CONFIG_PM
 898 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
 899 {
 900         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 901         wlan_private *priv = cardp->priv;
 902
 903         lbs_deb_enter(LBS_DEB_USB);
 904
 905         if (priv->adapter->psstate != PS_STATE_FULL_POWER)
 906                 return -1;
 907
 908         netif_device_detach(cardp->eth_dev);
 909         netif_device_detach(priv->mesh_dev);
 910
 911         /* Unlink tx & rx urb */
 912         usb_kill_urb(cardp->tx_urb);
 913         usb_kill_urb(cardp->rx_urb);
 914
 915         cardp->rx_urb_recall = 1;
 916
 917         lbs_deb_leave(LBS_DEB_USB);
 918         return 0;
 919 }
 920
 921 static int if_usb_resume(struct usb_interface *intf)
 922 {
 923         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 924         wlan_private *priv = cardp->priv;
 925
 926         lbs_deb_enter(LBS_DEB_USB);
 927
 928         cardp->rx_urb_recall = 0;
 929
 930         if_usb_submit_rx_urb(cardp->priv);
 931
 932         netif_device_attach(cardp->eth_dev);
 933         netif_device_attach(priv->mesh_dev);
 934
 935         lbs_deb_leave(LBS_DEB_USB);
 936         return 0;
 937 }
 938 #else
 939 #define if_usb_suspend NULL
 940 #define if_usb_resume NULL
 941 #endif
 942
 943 static struct usb_driver if_usb_driver = {
 944         /* driver name */
 945         .name = usbdriver_name,
 946         /* probe function name */
 947         .probe = if_usb_probe,
 948         /* disconnect function  name */
 949         .disconnect = if_usb_disconnect,
 950         /* device signature table */
 951         .id_table = if_usb_table,
 952         .suspend = if_usb_suspend,
 953         .resume = if_usb_resume,
 954 };
 955
 956 static int if_usb_init_module(void)
 957 {
 958         int ret = 0;
 959
 960         lbs_deb_enter(LBS_DEB_MAIN);
 961
 962         if (libertas_fw_name == NULL) {
 963                 libertas_fw_name = default_fw_name;
 964         }
 965
 966         ret = usb_register(&if_usb_driver);
 967
 968         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
 969         return ret;
 970 }
 971
 972 static void if_usb_exit_module(void)
 973 {
 974         struct list_head *ptr;
 975         struct usb_card_rec *cardp;
 976
 977         lbs_deb_enter(LBS_DEB_MAIN);
 978
 979         list_for_each(ptr, &usb_devices) {
 980                 cardp = list_entry(ptr, struct usb_card_rec, list);
 981                 if_usb_reset_device((wlan_private *) cardp->priv);
 982         }
 983
 984         /* API unregisters the driver from USB subsystem */
 985         usb_deregister(&if_usb_driver);
 986
 987         lbs_deb_leave(LBS_DEB_MAIN);
 988 }
 989
 990 module_init(if_usb_init_module);
 991 module_exit(if_usb_exit_module);
 992
 993 MODULE_DESCRIPTION("8388 USB WLAN Driver");
 994 MODULE_AUTHOR("Marvell International Ltd.");
 995 MODULE_LICENSE("GPL");