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