SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/libertas_tf/if_usb.c

   1 /*
   2  *  Copyright (C) 2008, cozybit Inc.
   3  *  Copyright (C) 2003-2006, Marvell International Ltd.
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or (at
   8  *  your option) any later version.
   9  */
  10 #include <linux/delay.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/firmware.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/slab.h>
  15 #include <linux/usb.h>
  16
  17 #define DRV_NAME "lbtf_usb"
  18
  19 #include "libertas_tf.h"
  20 #include "if_usb.h"
  21
  22 #define MESSAGE_HEADER_LEN      4
  23
  24 static char *lbtf_fw_name = "lbtf_usb.bin";
  25 module_param_named(fw_name, lbtf_fw_name, charp, 0644);
  26
  27 MODULE_FIRMWARE("lbtf_usb.bin");
  28
  29 static struct usb_device_id if_usb_table[] = {
  30         /* Enter the device signature inside */
  31         { USB_DEVICE(0x1286, 0x2001) },
  32         { USB_DEVICE(0x05a3, 0x8388) },
  33         {}      /* Terminating entry */
  34 };
  35
  36 MODULE_DEVICE_TABLE(usb, if_usb_table);
  37
  38 static void if_usb_receive(struct urb *urb);
  39 static void if_usb_receive_fwload(struct urb *urb);
  40 static int if_usb_prog_firmware(struct if_usb_card *cardp);
  41 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
  42                                uint8_t *payload, uint16_t nb);
  43 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
  44                         uint16_t nb, u8 data);
  45 static void if_usb_free(struct if_usb_card *cardp);
  46 static int if_usb_submit_rx_urb(struct if_usb_card *cardp);
  47 static int if_usb_reset_device(struct if_usb_card *cardp);
  48
  49 /**
  50  *  if_usb_wrike_bulk_callback -  call back to handle URB status
  51  *
  52  *  @param urb          pointer to urb structure
  53  */
  54 static void if_usb_write_bulk_callback(struct urb *urb)
  55 {
  56         if (urb->status != 0)
  57                 printk(KERN_INFO "libertastf: URB in failure status: %d\n",
  58                        urb->status);
  59 }
  60
  61 /**
  62  *  if_usb_free - free tx/rx urb, skb and rx buffer
  63  *
  64  *  @param cardp        pointer if_usb_card
  65  */
  66 static void if_usb_free(struct if_usb_card *cardp)
  67 {
  68         /* Unlink tx & rx urb */
  69         usb_kill_urb(cardp->tx_urb);
  70         usb_kill_urb(cardp->rx_urb);
  71         usb_kill_urb(cardp->cmd_urb);
  72
  73         usb_free_urb(cardp->tx_urb);
  74         cardp->tx_urb = NULL;
  75
  76         usb_free_urb(cardp->rx_urb);
  77         cardp->rx_urb = NULL;
  78
  79         usb_free_urb(cardp->cmd_urb);
  80         cardp->cmd_urb = NULL;
  81
  82         kfree(cardp->ep_out_buf);
  83         cardp->ep_out_buf = NULL;
  84 }
  85
  86 static void if_usb_setup_firmware(struct lbtf_private *priv)
  87 {
  88         struct if_usb_card *cardp = priv->card;
  89         struct cmd_ds_set_boot2_ver b2_cmd;
  90
  91         if_usb_submit_rx_urb(cardp);
  92         b2_cmd.hdr.size = cpu_to_le16(sizeof(b2_cmd));
  93         b2_cmd.action = 0;
  94         b2_cmd.version = cardp->boot2_version;
  95
  96         if (lbtf_cmd_with_response(priv, CMD_SET_BOOT2_VER, &b2_cmd))
  97                 printk(KERN_INFO "libertastf: setting boot2 version failed\n");
  98 }
  99
 100 static void if_usb_fw_timeo(unsigned long priv)
 101 {
 102         struct if_usb_card *cardp = (void *)priv;
 103
 104         if (!cardp->fwdnldover)
 105                 /* Download timed out */
 106                 cardp->priv->surpriseremoved = 1;
 107         wake_up(&cardp->fw_wq);
 108 }
 109
 110 /**
 111  *  if_usb_probe - sets the configuration values
 112  *
 113  *  @ifnum      interface number
 114  *  @id         pointer to usb_device_id
 115  *
 116  *  Returns: 0 on success, error code on failure
 117  */
 118 static int if_usb_probe(struct usb_interface *intf,
 119                         const struct usb_device_id *id)
 120 {
 121         struct usb_device *udev;
 122         struct usb_host_interface *iface_desc;
 123         struct usb_endpoint_descriptor *endpoint;
 124         struct lbtf_private *priv;
 125         struct if_usb_card *cardp;
 126         int i;
 127
 128         udev = interface_to_usbdev(intf);
 129
 130         cardp = kzalloc(sizeof(struct if_usb_card), GFP_KERNEL);
 131         if (!cardp)
 132                 goto error;
 133
 134         setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
 135         init_waitqueue_head(&cardp->fw_wq);
 136
 137         cardp->udev = udev;
 138         iface_desc = intf->cur_altsetting;
 139
 140         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 141                 endpoint = &iface_desc->endpoint[i].desc;
 142                 if (usb_endpoint_is_bulk_in(endpoint)) {
 143                         cardp->ep_in_size =
 144                                 le16_to_cpu(endpoint->wMaxPacketSize);
 145                         cardp->ep_in = usb_endpoint_num(endpoint);
 146                 } else if (usb_endpoint_is_bulk_out(endpoint)) {
 147                         cardp->ep_out_size =
 148                                 le16_to_cpu(endpoint->wMaxPacketSize);
 149                         cardp->ep_out = usb_endpoint_num(endpoint);
 150                 }
 151         }
 152         if (!cardp->ep_out_size || !cardp->ep_in_size)
 153                 /* Endpoints not found */
 154                 goto dealloc;
 155
 156         cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
 157         if (!cardp->rx_urb)
 158                 goto dealloc;
 159
 160         cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
 161         if (!cardp->tx_urb)
 162                 goto dealloc;
 163
 164         cardp->cmd_urb = usb_alloc_urb(0, GFP_KERNEL);
 165         if (!cardp->cmd_urb)
 166                 goto dealloc;
 167
 168         cardp->ep_out_buf = kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 169                                     GFP_KERNEL);
 170         if (!cardp->ep_out_buf)
 171                 goto dealloc;
 172
 173         priv = lbtf_add_card(cardp, &udev->dev);
 174         if (!priv)
 175                 goto dealloc;
 176
 177         cardp->priv = priv;
 178
 179         priv->hw_host_to_card = if_usb_host_to_card;
 180         priv->hw_prog_firmware = if_usb_prog_firmware;
 181         priv->hw_reset_device = if_usb_reset_device;
 182         cardp->boot2_version = udev->descriptor.bcdDevice;
 183
 184         usb_get_dev(udev);
 185         usb_set_intfdata(intf, cardp);
 186
 187         return 0;
 188
 189 dealloc:
 190         if_usb_free(cardp);
 191 error:
 192         return -ENOMEM;
 193 }
 194
 195 /**
 196  *  if_usb_disconnect -  free resource and cleanup
 197  *
 198  *  @intf       USB interface structure
 199  */
 200 static void if_usb_disconnect(struct usb_interface *intf)
 201 {
 202         struct if_usb_card *cardp = usb_get_intfdata(intf);
 203         struct lbtf_private *priv = (struct lbtf_private *) cardp->priv;
 204
 205         if_usb_reset_device(cardp);
 206
 207         if (priv)
 208                 lbtf_remove_card(priv);
 209
 210         /* Unlink and free urb */
 211         if_usb_free(cardp);
 212
 213         usb_set_intfdata(intf, NULL);
 214         usb_put_dev(interface_to_usbdev(intf));
 215 }
 216
 217 /**
 218  *  if_usb_send_fw_pkt -  This function downloads the FW
 219  *
 220  *  @priv       pointer to struct lbtf_private
 221  *
 222  *  Returns: 0
 223  */
 224 static int if_usb_send_fw_pkt(struct if_usb_card *cardp)
 225 {
 226         struct fwdata *fwdata = cardp->ep_out_buf;
 227         u8 *firmware = (u8 *) cardp->fw->data;
 228
 229         /* If we got a CRC failure on the last block, back
 230            up and retry it */
 231         if (!cardp->CRC_OK) {
 232                 cardp->totalbytes = cardp->fwlastblksent;
 233                 cardp->fwseqnum--;
 234         }
 235
 236         /* struct fwdata (which we sent to the card) has an
 237            extra __le32 field in between the header and the data,
 238            which is not in the struct fwheader in the actual
 239            firmware binary. Insert the seqnum in the middle... */
 240         memcpy(&fwdata->hdr, &firmware[cardp->totalbytes],
 241                sizeof(struct fwheader));
 242
 243         cardp->fwlastblksent = cardp->totalbytes;
 244         cardp->totalbytes += sizeof(struct fwheader);
 245
 246         memcpy(fwdata->data, &firmware[cardp->totalbytes],
 247                le32_to_cpu(fwdata->hdr.datalength));
 248
 249         fwdata->seqnum = cpu_to_le32(++cardp->fwseqnum);
 250         cardp->totalbytes += le32_to_cpu(fwdata->hdr.datalength);
 251
 252         usb_tx_block(cardp, cardp->ep_out_buf, sizeof(struct fwdata) +
 253                      le32_to_cpu(fwdata->hdr.datalength), 0);
 254
 255         if (fwdata->hdr.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK))
 256                 /* Host has finished FW downloading
 257                  * Donwloading FW JUMP BLOCK
 258                  */
 259                 cardp->fwfinalblk = 1;
 260
 261         return 0;
 262 }
 263
 264 static int if_usb_reset_device(struct if_usb_card *cardp)
 265 {
 266         struct cmd_ds_802_11_reset *cmd = cardp->ep_out_buf + 4;
 267         int ret;
 268
 269         *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
 270
 271         cmd->hdr.command = cpu_to_le16(CMD_802_11_RESET);
 272         cmd->hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset));
 273         cmd->hdr.result = cpu_to_le16(0);
 274         cmd->hdr.seqnum = cpu_to_le16(0x5a5a);
 275         cmd->action = cpu_to_le16(CMD_ACT_HALT);
 276         usb_tx_block(cardp, cardp->ep_out_buf,
 277                      4 + sizeof(struct cmd_ds_802_11_reset), 0);
 278
 279         msleep(100);
 280         ret = usb_reset_device(cardp->udev);
 281         msleep(100);
 282
 283         return ret;
 284 }
 285 EXPORT_SYMBOL_GPL(if_usb_reset_device);
 286
 287 /**
 288  *  usb_tx_block - transfer data to the device
 289  *
 290  *  @priv       pointer to struct lbtf_private
 291  *  @payload    pointer to payload data
 292  *  @nb         data length
 293  *  @data       non-zero for data, zero for commands
 294  *
 295  *  Returns: 0 on success, nonzero otherwise.
 296  */
 297 static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
 298                         uint16_t nb, u8 data)
 299 {
 300         struct urb *urb;
 301
 302         /* check if device is removed */
 303         if (cardp->priv->surpriseremoved)
 304                 return -1;
 305
 306         if (data)
 307                 urb = cardp->tx_urb;
 308         else
 309                 urb = cardp->cmd_urb;
 310
 311         usb_fill_bulk_urb(urb, cardp->udev,
 312                           usb_sndbulkpipe(cardp->udev,
 313                                           cardp->ep_out),
 314                           payload, nb, if_usb_write_bulk_callback, cardp);
 315
 316         urb->transfer_flags |= URB_ZERO_PACKET;
 317
 318         if (usb_submit_urb(urb, GFP_ATOMIC))
 319                 return -1;
 320         return 0;
 321 }
 322
 323 static int __if_usb_submit_rx_urb(struct if_usb_card *cardp,
 324                                   void (*callbackfn)(struct urb *urb))
 325 {
 326         struct sk_buff *skb;
 327
 328         skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
 329         if (!skb)
 330                 return -1;
 331
 332         cardp->rx_skb = skb;
 333
 334         /* Fill the receive configuration URB and initialise the Rx call back */
 335         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
 336                           usb_rcvbulkpipe(cardp->udev, cardp->ep_in),
 337                           skb_tail_pointer(skb),
 338                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, cardp);
 339
 340         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 341
 342         if (usb_submit_urb(cardp->rx_urb, GFP_ATOMIC)) {
 343                 kfree_skb(skb);
 344                 cardp->rx_skb = NULL;
 345                 return -1;
 346         } else
 347                 return 0;
 348 }
 349
 350 static int if_usb_submit_rx_urb_fwload(struct if_usb_card *cardp)
 351 {
 352         return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
 353 }
 354
 355 static int if_usb_submit_rx_urb(struct if_usb_card *cardp)
 356 {
 357         return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
 358 }
 359
 360 static void if_usb_receive_fwload(struct urb *urb)
 361 {
 362         struct if_usb_card *cardp = urb->context;
 363         struct sk_buff *skb = cardp->rx_skb;
 364         struct fwsyncheader *syncfwheader;
 365         struct bootcmdresp bcmdresp;
 366
 367         if (urb->status) {
 368                 kfree_skb(skb);
 369                 return;
 370         }
 371
 372         if (cardp->fwdnldover) {
 373                 __le32 *tmp = (__le32 *)(skb->data);
 374
 375                 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
 376                     tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY))
 377                         /* Firmware ready event received */
 378                         wake_up(&cardp->fw_wq);
 379                 else
 380                         if_usb_submit_rx_urb_fwload(cardp);
 381                 kfree_skb(skb);
 382                 return;
 383         }
 384         if (cardp->bootcmdresp <= 0) {
 385                 memcpy(&bcmdresp, skb->data, sizeof(bcmdresp));
 386
 387                 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
 388                         kfree_skb(skb);
 389                         if_usb_submit_rx_urb_fwload(cardp);
 390                         cardp->bootcmdresp = 1;
 391                         /* Received valid boot command response */
 392                         return;
 393                 }
 394                 if (bcmdresp.magic != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
 395                         if (bcmdresp.magic == cpu_to_le32(CMD_TYPE_REQUEST) ||
 396                             bcmdresp.magic == cpu_to_le32(CMD_TYPE_DATA) ||
 397                             bcmdresp.magic == cpu_to_le32(CMD_TYPE_INDICATION))
 398                                 cardp->bootcmdresp = -1;
 399                 } else if (bcmdresp.cmd == BOOT_CMD_FW_BY_USB &&
 400                            bcmdresp.result == BOOT_CMD_RESP_OK)
 401                         cardp->bootcmdresp = 1;
 402
 403                 kfree_skb(skb);
 404                 if_usb_submit_rx_urb_fwload(cardp);
 405                 return;
 406         }
 407
 408         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
 409         if (!syncfwheader) {
 410                 kfree_skb(skb);
 411                 return;
 412         }
 413
 414         memcpy(syncfwheader, skb->data, sizeof(struct fwsyncheader));
 415
 416         if (!syncfwheader->cmd)
 417                 cardp->CRC_OK = 1;
 418         else
 419                 cardp->CRC_OK = 0;
 420         kfree_skb(skb);
 421
 422         /* reschedule timer for 200ms hence */
 423         mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
 424
 425         if (cardp->fwfinalblk) {
 426                 cardp->fwdnldover = 1;
 427                 goto exit;
 428         }
 429
 430         if_usb_send_fw_pkt(cardp);
 431
 432  exit:
 433         if_usb_submit_rx_urb_fwload(cardp);
 434
 435         kfree(syncfwheader);
 436
 437         return;
 438 }
 439
 440 #define MRVDRV_MIN_PKT_LEN      30
 441
 442 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 443                                        struct if_usb_card *cardp,
 444                                        struct lbtf_private *priv)
 445 {
 446         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + MESSAGE_HEADER_LEN
 447             || recvlength < MRVDRV_MIN_PKT_LEN) {
 448                 kfree_skb(skb);
 449                 return;
 450         }
 451
 452         skb_put(skb, recvlength);
 453         skb_pull(skb, MESSAGE_HEADER_LEN);
 454         lbtf_rx(priv, skb);
 455 }
 456
 457 static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
 458                                       struct sk_buff *skb,
 459                                       struct if_usb_card *cardp,
 460                                       struct lbtf_private *priv)
 461 {
 462         if (recvlength > LBS_CMD_BUFFER_SIZE) {
 463                 kfree_skb(skb);
 464                 return;
 465         }
 466
 467         BUG_ON(!in_interrupt());
 468
 469         spin_lock(&priv->driver_lock);
 470         memcpy(priv->cmd_resp_buff, recvbuff + MESSAGE_HEADER_LEN,
 471                recvlength - MESSAGE_HEADER_LEN);
 472         kfree_skb(skb);
 473         lbtf_cmd_response_rx(priv);
 474         spin_unlock(&priv->driver_lock);
 475 }
 476
 477 /**
 478  *  if_usb_receive - read data received from the device.
 479  *
 480  *  @urb                pointer to struct urb
 481  */
 482 static void if_usb_receive(struct urb *urb)
 483 {
 484         struct if_usb_card *cardp = urb->context;
 485         struct sk_buff *skb = cardp->rx_skb;
 486         struct lbtf_private *priv = cardp->priv;
 487         int recvlength = urb->actual_length;
 488         uint8_t *recvbuff = NULL;
 489         uint32_t recvtype = 0;
 490         __le32 *pkt = (__le32 *) skb->data;
 491
 492         if (recvlength) {
 493                 if (urb->status) {
 494                         kfree_skb(skb);
 495                         goto setup_for_next;
 496                 }
 497
 498                 recvbuff = skb->data;
 499                 recvtype = le32_to_cpu(pkt[0]);
 500         } else if (urb->status) {
 501                 kfree_skb(skb);
 502                 return;
 503         }
 504
 505         switch (recvtype) {
 506         case CMD_TYPE_DATA:
 507                 process_cmdtypedata(recvlength, skb, cardp, priv);
 508                 break;
 509
 510         case CMD_TYPE_REQUEST:
 511                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
 512                 break;
 513
 514         case CMD_TYPE_INDICATION:
 515         {
 516                 /* Event cause handling */
 517                 u32 event_cause = le32_to_cpu(pkt[1]);
 518
 519                 /* Icky undocumented magic special case */
 520                 if (event_cause & 0xffff0000) {
 521                         u16 tmp;
 522                         u8 retrycnt;
 523                         u8 failure;
 524
 525                         tmp = event_cause >> 16;
 526                         retrycnt = tmp & 0x00ff;
 527                         failure = (tmp & 0xff00) >> 8;
 528                         lbtf_send_tx_feedback(priv, retrycnt, failure);
 529                 } else if (event_cause == LBTF_EVENT_BCN_SENT)
 530                         lbtf_bcn_sent(priv);
 531                 else
 532                         printk(KERN_DEBUG
 533                                "Unsupported notification %d received\n",
 534                                event_cause);
 535                 kfree_skb(skb);
 536                 break;
 537         }
 538         default:
 539                 printk(KERN_DEBUG "libertastf: unknown command type 0x%X\n",
 540                              recvtype);
 541                 kfree_skb(skb);
 542                 break;
 543         }
 544
 545 setup_for_next:
 546         if_usb_submit_rx_urb(cardp);
 547 }
 548
 549 /**
 550  *  if_usb_host_to_card -  Download data to the device
 551  *
 552  *  @priv               pointer to struct lbtf_private structure
 553  *  @type               type of data
 554  *  @buf                pointer to data buffer
 555  *  @len                number of bytes
 556  *
 557  *  Returns: 0 on success, nonzero otherwise
 558  */
 559 static int if_usb_host_to_card(struct lbtf_private *priv, uint8_t type,
 560                                uint8_t *payload, uint16_t nb)
 561 {
 562         struct if_usb_card *cardp = priv->card;
 563         u8 data = 0;
 564
 565         if (type == MVMS_CMD) {
 566                 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_REQUEST);
 567         } else {
 568                 *(__le32 *)cardp->ep_out_buf = cpu_to_le32(CMD_TYPE_DATA);
 569                 data = 1;
 570         }
 571
 572         memcpy((cardp->ep_out_buf + MESSAGE_HEADER_LEN), payload, nb);
 573
 574         return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN,
 575                             data);
 576 }
 577
 578 /**
 579  *  if_usb_issue_boot_command - Issue boot command to Boot2.
 580  *
 581  *  @ivalue   1 boots from FW by USB-Download, 2 boots from FW in EEPROM.
 582  *
 583  *  Returns: 0
 584  */
 585 static int if_usb_issue_boot_command(struct if_usb_card *cardp, int ivalue)
 586 {
 587         struct bootcmd *bootcmd = cardp->ep_out_buf;
 588
 589         /* Prepare command */
 590         bootcmd->magic = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
 591         bootcmd->cmd = ivalue;
 592         memset(bootcmd->pad, 0, sizeof(bootcmd->pad));
 593
 594         /* Issue command */
 595         usb_tx_block(cardp, cardp->ep_out_buf, sizeof(*bootcmd), 0);
 596
 597         return 0;
 598 }
 599
 600
 601 /**
 602  *  check_fwfile_format - Check the validity of Boot2/FW image.
 603  *
 604  *  @data       pointer to image
 605  *  @totlen     image length
 606  *
 607  *  Returns: 0 if the image is valid, nonzero otherwise.
 608  */
 609 static int check_fwfile_format(const u8 *data, u32 totlen)
 610 {
 611         u32 bincmd, exit;
 612         u32 blksize, offset, len;
 613         int ret;
 614
 615         ret = 1;
 616         exit = len = 0;
 617
 618         do {
 619                 struct fwheader *fwh = (void *) data;
 620
 621                 bincmd = le32_to_cpu(fwh->dnldcmd);
 622                 blksize = le32_to_cpu(fwh->datalength);
 623                 switch (bincmd) {
 624                 case FW_HAS_DATA_TO_RECV:
 625                         offset = sizeof(struct fwheader) + blksize;
 626                         data += offset;
 627                         len += offset;
 628                         if (len >= totlen)
 629                                 exit = 1;
 630                         break;
 631                 case FW_HAS_LAST_BLOCK:
 632                         exit = 1;
 633                         ret = 0;
 634                         break;
 635                 default:
 636                         exit = 1;
 637                         break;
 638                 }
 639         } while (!exit);
 640
 641         if (ret)
 642                 printk(KERN_INFO
 643                        "libertastf: firmware file format check failed\n");
 644         return ret;
 645 }
 646
 647
 648 static int if_usb_prog_firmware(struct if_usb_card *cardp)
 649 {
 650         int i = 0;
 651         static int reset_count = 10;
 652         int ret = 0;
 653
 654         ret = request_firmware(&cardp->fw, lbtf_fw_name, &cardp->udev->dev);
 655         if (ret < 0) {
 656                 printk(KERN_INFO "libertastf: firmware %s not found\n",
 657                        lbtf_fw_name);
 658                 goto done;
 659         }
 660
 661         if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
 662                 goto release_fw;
 663
 664 restart:
 665         if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
 666                 ret = -1;
 667                 goto release_fw;
 668         }
 669
 670         cardp->bootcmdresp = 0;
 671         do {
 672                 int j = 0;
 673                 i++;
 674                 /* Issue Boot command = 1, Boot from Download-FW */
 675                 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
 676                 /* wait for command response */
 677                 do {
 678                         j++;
 679                         msleep_interruptible(100);
 680                 } while (cardp->bootcmdresp == 0 && j < 10);
 681         } while (cardp->bootcmdresp == 0 && i < 5);
 682
 683         if (cardp->bootcmdresp <= 0) {
 684                 if (--reset_count >= 0) {
 685                         if_usb_reset_device(cardp);
 686                         goto restart;
 687                 }
 688                 return -1;
 689         }
 690
 691         i = 0;
 692
 693         cardp->totalbytes = 0;
 694         cardp->fwlastblksent = 0;
 695         cardp->CRC_OK = 1;
 696         cardp->fwdnldover = 0;
 697         cardp->fwseqnum = -1;
 698         cardp->totalbytes = 0;
 699         cardp->fwfinalblk = 0;
 700
 701         /* Send the first firmware packet... */
 702         if_usb_send_fw_pkt(cardp);
 703
 704         /* ... and wait for the process to complete */
 705         wait_event_interruptible(cardp->fw_wq, cardp->priv->surpriseremoved ||
 706                                                cardp->fwdnldover);
 707
 708         del_timer_sync(&cardp->fw_timeout);
 709         usb_kill_urb(cardp->rx_urb);
 710
 711         if (!cardp->fwdnldover) {
 712                 printk(KERN_INFO "libertastf: failed to load fw,"
 713                                  " resetting device!\n");
 714                 if (--reset_count >= 0) {
 715                         if_usb_reset_device(cardp);
 716                         goto restart;
 717                 }
 718
 719                 printk(KERN_INFO "libertastf: fw download failure\n");
 720                 ret = -1;
 721                 goto release_fw;
 722         }
 723
 724         cardp->priv->fw_ready = 1;
 725
 726  release_fw:
 727         release_firmware(cardp->fw);
 728         cardp->fw = NULL;
 729
 730         if_usb_setup_firmware(cardp->priv);
 731
 732  done:
 733         return ret;
 734 }
 735 EXPORT_SYMBOL_GPL(if_usb_prog_firmware);
 736
 737
 738 #define if_usb_suspend NULL
 739 #define if_usb_resume NULL
 740
 741 static struct usb_driver if_usb_driver = {
 742         .name = DRV_NAME,
 743         .probe = if_usb_probe,
 744         .disconnect = if_usb_disconnect,
 745         .id_table = if_usb_table,
 746         .suspend = if_usb_suspend,
 747         .resume = if_usb_resume,
 748 };
 749
 750 static int __init if_usb_init_module(void)
 751 {
 752         int ret = 0;
 753
 754         ret = usb_register(&if_usb_driver);
 755         return ret;
 756 }
 757
 758 static void __exit if_usb_exit_module(void)
 759 {
 760         usb_deregister(&if_usb_driver);
 761 }
 762
 763 module_init(if_usb_init_module);
 764 module_exit(if_usb_exit_module);
 765
 766 MODULE_DESCRIPTION("8388 USB WLAN Thinfirm Driver");
 767 MODULE_AUTHOR("Cozybit Inc.");
 768 MODULE_LICENSE("GPL");