drivers/bluetooth/bfusb.c

   1 /*
   2  *
   3  *  AVM BlueFRITZ! USB driver
   4  *
   5  *  Copyright (C) 2003  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25
  26 #include <linux/kernel.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/sched.h>
  31 #include <linux/errno.h>
  32 #include <linux/skbuff.h>
  33
  34 #include <linux/device.h>
  35 #include <linux/firmware.h>
  36
  37 #include <linux/usb.h>
  38
  39 #include <net/bluetooth/bluetooth.h>
  40 #include <net/bluetooth/hci_core.h>
  41
  42 #ifndef CONFIG_BT_HCIBFUSB_DEBUG
  43 #undef  BT_DBG
  44 #define BT_DBG(D...)
  45 #endif
  46
  47 #define VERSION "1.1"
  48
  49 static int ignore = 0;
  50
  51 static struct usb_driver bfusb_driver;
  52
  53 static struct usb_device_id bfusb_table[] = {
  54         /* AVM BlueFRITZ! USB */
  55         { USB_DEVICE(0x057c, 0x2200) },
  56
  57         { }     /* Terminating entry */
  58 };
  59
  60 MODULE_DEVICE_TABLE(usb, bfusb_table);
  61
  62
  63 #define BFUSB_MAX_BLOCK_SIZE    256
  64
  65 #define BFUSB_BLOCK_TIMEOUT     3000
  66
  67 #define BFUSB_TX_PROCESS        1
  68 #define BFUSB_TX_WAKEUP         2
  69
  70 #define BFUSB_MAX_BULK_TX       2
  71 #define BFUSB_MAX_BULK_RX       2
  72
  73 struct bfusb {
  74         struct hci_dev          *hdev;
  75
  76         unsigned long           state;
  77
  78         struct usb_device       *udev;
  79
  80         unsigned int            bulk_in_ep;
  81         unsigned int            bulk_out_ep;
  82         unsigned int            bulk_pkt_size;
  83
  84         rwlock_t                lock;
  85
  86         struct sk_buff_head     transmit_q;
  87
  88         struct sk_buff          *reassembly;
  89
  90         atomic_t                pending_tx;
  91         struct sk_buff_head     pending_q;
  92         struct sk_buff_head     completed_q;
  93 };
  94
  95 struct bfusb_scb {
  96         struct urb *urb;
  97 };
  98
  99 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs);
 100 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs);
 101
 102 static struct urb *bfusb_get_completed(struct bfusb *bfusb)
 103 {
 104         struct sk_buff *skb;
 105         struct urb *urb = NULL;
 106
 107         BT_DBG("bfusb %p", bfusb);
 108
 109         skb = skb_dequeue(&bfusb->completed_q);
 110         if (skb) {
 111                 urb = ((struct bfusb_scb *) skb->cb)->urb;
 112                 kfree_skb(skb);
 113         }
 114
 115         return urb;
 116 }
 117
 118 static void bfusb_unlink_urbs(struct bfusb *bfusb)
 119 {
 120         struct sk_buff *skb;
 121         struct urb *urb;
 122
 123         BT_DBG("bfusb %p", bfusb);
 124
 125         while ((skb = skb_dequeue(&bfusb->pending_q))) {
 126                 urb = ((struct bfusb_scb *) skb->cb)->urb;
 127                 usb_kill_urb(urb);
 128                 skb_queue_tail(&bfusb->completed_q, skb);
 129         }
 130
 131         while ((urb = bfusb_get_completed(bfusb)))
 132                 usb_free_urb(urb);
 133 }
 134
 135
 136 static int bfusb_send_bulk(struct bfusb *bfusb, struct sk_buff *skb)
 137 {
 138         struct bfusb_scb *scb = (void *) skb->cb;
 139         struct urb *urb = bfusb_get_completed(bfusb);
 140         int err, pipe;
 141
 142         BT_DBG("bfusb %p skb %p len %d", bfusb, skb, skb->len);
 143
 144         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
 145                 return -ENOMEM;
 146
 147         pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
 148
 149         usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, skb->len,
 150                         bfusb_tx_complete, skb);
 151
 152         scb->urb = urb;
 153
 154         skb_queue_tail(&bfusb->pending_q, skb);
 155
 156         err = usb_submit_urb(urb, GFP_ATOMIC);
 157         if (err) {
 158                 BT_ERR("%s bulk tx submit failed urb %p err %d",
 159                                         bfusb->hdev->name, urb, err);
 160                 skb_unlink(skb, &bfusb->pending_q);
 161                 usb_free_urb(urb);
 162         } else
 163                 atomic_inc(&bfusb->pending_tx);
 164
 165         return err;
 166 }
 167
 168 static void bfusb_tx_wakeup(struct bfusb *bfusb)
 169 {
 170         struct sk_buff *skb;
 171
 172         BT_DBG("bfusb %p", bfusb);
 173
 174         if (test_and_set_bit(BFUSB_TX_PROCESS, &bfusb->state)) {
 175                 set_bit(BFUSB_TX_WAKEUP, &bfusb->state);
 176                 return;
 177         }
 178
 179         do {
 180                 clear_bit(BFUSB_TX_WAKEUP, &bfusb->state);
 181
 182                 while ((atomic_read(&bfusb->pending_tx) < BFUSB_MAX_BULK_TX) &&
 183                                 (skb = skb_dequeue(&bfusb->transmit_q))) {
 184                         if (bfusb_send_bulk(bfusb, skb) < 0) {
 185                                 skb_queue_head(&bfusb->transmit_q, skb);
 186                                 break;
 187                         }
 188                 }
 189
 190         } while (test_bit(BFUSB_TX_WAKEUP, &bfusb->state));
 191
 192         clear_bit(BFUSB_TX_PROCESS, &bfusb->state);
 193 }
 194
 195 static void bfusb_tx_complete(struct urb *urb, struct pt_regs *regs)
 196 {
 197         struct sk_buff *skb = (struct sk_buff *) urb->context;
 198         struct bfusb *bfusb = (struct bfusb *) skb->dev;
 199
 200         BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
 201
 202         atomic_dec(&bfusb->pending_tx);
 203
 204         if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
 205                 return;
 206
 207         if (!urb->status)
 208                 bfusb->hdev->stat.byte_tx += skb->len;
 209         else
 210                 bfusb->hdev->stat.err_tx++;
 211
 212         read_lock(&bfusb->lock);
 213
 214         skb_unlink(skb, &bfusb->pending_q);
 215         skb_queue_tail(&bfusb->completed_q, skb);
 216
 217         bfusb_tx_wakeup(bfusb);
 218
 219         read_unlock(&bfusb->lock);
 220 }
 221
 222
 223 static int bfusb_rx_submit(struct bfusb *bfusb, struct urb *urb)
 224 {
 225         struct bfusb_scb *scb;
 226         struct sk_buff *skb;
 227         int err, pipe, size = HCI_MAX_FRAME_SIZE + 32;
 228
 229         BT_DBG("bfusb %p urb %p", bfusb, urb);
 230
 231         if (!urb && !(urb = usb_alloc_urb(0, GFP_ATOMIC)))
 232                 return -ENOMEM;
 233
 234         if (!(skb = bt_skb_alloc(size, GFP_ATOMIC))) {
 235                 usb_free_urb(urb);
 236                 return -ENOMEM;
 237         }
 238
 239         skb->dev = (void *) bfusb;
 240
 241         scb = (struct bfusb_scb *) skb->cb;
 242         scb->urb = urb;
 243
 244         pipe = usb_rcvbulkpipe(bfusb->udev, bfusb->bulk_in_ep);
 245
 246         usb_fill_bulk_urb(urb, bfusb->udev, pipe, skb->data, size,
 247                         bfusb_rx_complete, skb);
 248
 249         skb_queue_tail(&bfusb->pending_q, skb);
 250
 251         err = usb_submit_urb(urb, GFP_ATOMIC);
 252         if (err) {
 253                 BT_ERR("%s bulk rx submit failed urb %p err %d",
 254                                         bfusb->hdev->name, urb, err);
 255                 skb_unlink(skb, &bfusb->pending_q);
 256                 kfree_skb(skb);
 257                 usb_free_urb(urb);
 258         }
 259
 260         return err;
 261 }
 262
 263 static inline int bfusb_recv_block(struct bfusb *bfusb, int hdr, unsigned char *data, int len)
 264 {
 265         BT_DBG("bfusb %p hdr 0x%02x data %p len %d", bfusb, hdr, data, len);
 266
 267         if (hdr & 0x10) {
 268                 BT_ERR("%s error in block", bfusb->hdev->name);
 269                 if (bfusb->reassembly)
 270                         kfree_skb(bfusb->reassembly);
 271                 bfusb->reassembly = NULL;
 272                 return -EIO;
 273         }
 274
 275         if (hdr & 0x04) {
 276                 struct sk_buff *skb;
 277                 unsigned char pkt_type;
 278                 int pkt_len = 0;
 279
 280                 if (bfusb->reassembly) {
 281                         BT_ERR("%s unexpected start block", bfusb->hdev->name);
 282                         kfree_skb(bfusb->reassembly);
 283                         bfusb->reassembly = NULL;
 284                 }
 285
 286                 if (len < 1) {
 287                         BT_ERR("%s no packet type found", bfusb->hdev->name);
 288                         return -EPROTO;
 289                 }
 290
 291                 pkt_type = *data++; len--;
 292
 293                 switch (pkt_type) {
 294                 case HCI_EVENT_PKT:
 295                         if (len >= HCI_EVENT_HDR_SIZE) {
 296                                 struct hci_event_hdr *hdr = (struct hci_event_hdr *) data;
 297                                 pkt_len = HCI_EVENT_HDR_SIZE + hdr->plen;
 298                         } else {
 299                                 BT_ERR("%s event block is too short", bfusb->hdev->name);
 300                                 return -EILSEQ;
 301                         }
 302                         break;
 303
 304                 case HCI_ACLDATA_PKT:
 305                         if (len >= HCI_ACL_HDR_SIZE) {
 306                                 struct hci_acl_hdr *hdr = (struct hci_acl_hdr *) data;
 307                                 pkt_len = HCI_ACL_HDR_SIZE + __le16_to_cpu(hdr->dlen);
 308                         } else {
 309                                 BT_ERR("%s data block is too short", bfusb->hdev->name);
 310                                 return -EILSEQ;
 311                         }
 312                         break;
 313
 314                 case HCI_SCODATA_PKT:
 315                         if (len >= HCI_SCO_HDR_SIZE) {
 316                                 struct hci_sco_hdr *hdr = (struct hci_sco_hdr *) data;
 317                                 pkt_len = HCI_SCO_HDR_SIZE + hdr->dlen;
 318                         } else {
 319                                 BT_ERR("%s audio block is too short", bfusb->hdev->name);
 320                                 return -EILSEQ;
 321                         }
 322                         break;
 323                 }
 324
 325                 skb = bt_skb_alloc(pkt_len, GFP_ATOMIC);
 326                 if (!skb) {
 327                         BT_ERR("%s no memory for the packet", bfusb->hdev->name);
 328                         return -ENOMEM;
 329                 }
 330
 331                 skb->dev = (void *) bfusb->hdev;
 332                 bt_cb(skb)->pkt_type = pkt_type;
 333
 334                 bfusb->reassembly = skb;
 335         } else {
 336                 if (!bfusb->reassembly) {
 337                         BT_ERR("%s unexpected continuation block", bfusb->hdev->name);
 338                         return -EIO;
 339                 }
 340         }
 341
 342         if (len > 0)
 343                 memcpy(skb_put(bfusb->reassembly, len), data, len);
 344
 345         if (hdr & 0x08) {
 346                 hci_recv_frame(bfusb->reassembly);
 347                 bfusb->reassembly = NULL;
 348         }
 349
 350         return 0;
 351 }
 352
 353 static void bfusb_rx_complete(struct urb *urb, struct pt_regs *regs)
 354 {
 355         struct sk_buff *skb = (struct sk_buff *) urb->context;
 356         struct bfusb *bfusb = (struct bfusb *) skb->dev;
 357         unsigned char *buf = urb->transfer_buffer;
 358         int count = urb->actual_length;
 359         int err, hdr, len;
 360
 361         BT_DBG("bfusb %p urb %p skb %p len %d", bfusb, urb, skb, skb->len);
 362
 363         read_lock(&bfusb->lock);
 364
 365         if (!test_bit(HCI_RUNNING, &bfusb->hdev->flags))
 366                 goto unlock;
 367
 368         if (urb->status || !count)
 369                 goto resubmit;
 370
 371         bfusb->hdev->stat.byte_rx += count;
 372
 373         skb_put(skb, count);
 374
 375         while (count) {
 376                 hdr = buf[0] | (buf[1] << 8);
 377
 378                 if (hdr & 0x4000) {
 379                         len = 0;
 380                         count -= 2;
 381                         buf   += 2;
 382                 } else {
 383                         len = (buf[2] == 0) ? 256 : buf[2];
 384                         count -= 3;
 385                         buf   += 3;
 386                 }
 387
 388                 if (count < len) {
 389                         BT_ERR("%s block extends over URB buffer ranges",
 390                                         bfusb->hdev->name);
 391                 }
 392
 393                 if ((hdr & 0xe1) == 0xc1)
 394                         bfusb_recv_block(bfusb, hdr, buf, len);
 395
 396                 count -= len;
 397                 buf   += len;
 398         }
 399
 400         skb_unlink(skb, &bfusb->pending_q);
 401         kfree_skb(skb);
 402
 403         bfusb_rx_submit(bfusb, urb);
 404
 405         read_unlock(&bfusb->lock);
 406
 407         return;
 408
 409 resubmit:
 410         urb->dev = bfusb->udev;
 411
 412         err = usb_submit_urb(urb, GFP_ATOMIC);
 413         if (err) {
 414                 BT_ERR("%s bulk resubmit failed urb %p err %d",
 415                                         bfusb->hdev->name, urb, err);
 416         }
 417
 418 unlock:
 419         read_unlock(&bfusb->lock);
 420 }
 421
 422
 423 static int bfusb_open(struct hci_dev *hdev)
 424 {
 425         struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 426         unsigned long flags;
 427         int i, err;
 428
 429         BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 430
 431         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 432                 return 0;
 433
 434         write_lock_irqsave(&bfusb->lock, flags);
 435
 436         err = bfusb_rx_submit(bfusb, NULL);
 437         if (!err) {
 438                 for (i = 1; i < BFUSB_MAX_BULK_RX; i++)
 439                         bfusb_rx_submit(bfusb, NULL);
 440         } else {
 441                 clear_bit(HCI_RUNNING, &hdev->flags);
 442         }
 443
 444         write_unlock_irqrestore(&bfusb->lock, flags);
 445
 446         return err;
 447 }
 448
 449 static int bfusb_flush(struct hci_dev *hdev)
 450 {
 451         struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 452
 453         BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 454
 455         skb_queue_purge(&bfusb->transmit_q);
 456
 457         return 0;
 458 }
 459
 460 static int bfusb_close(struct hci_dev *hdev)
 461 {
 462         struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 463         unsigned long flags;
 464
 465         BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 466
 467         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 468                 return 0;
 469
 470         write_lock_irqsave(&bfusb->lock, flags);
 471         write_unlock_irqrestore(&bfusb->lock, flags);
 472
 473         bfusb_unlink_urbs(bfusb);
 474         bfusb_flush(hdev);
 475
 476         return 0;
 477 }
 478
 479 static int bfusb_send_frame(struct sk_buff *skb)
 480 {
 481         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 482         struct bfusb *bfusb;
 483         struct sk_buff *nskb;
 484         unsigned char buf[3];
 485         int sent = 0, size, count;
 486
 487         BT_DBG("hdev %p skb %p type %d len %d", hdev, skb, bt_cb(skb)->pkt_type, skb->len);
 488
 489         if (!hdev) {
 490                 BT_ERR("Frame for unknown HCI device (hdev=NULL)");
 491                 return -ENODEV;
 492         }
 493
 494         if (!test_bit(HCI_RUNNING, &hdev->flags))
 495                 return -EBUSY;
 496
 497         bfusb = (struct bfusb *) hdev->driver_data;
 498
 499         switch (bt_cb(skb)->pkt_type) {
 500         case HCI_COMMAND_PKT:
 501                 hdev->stat.cmd_tx++;
 502                 break;
 503         case HCI_ACLDATA_PKT:
 504                 hdev->stat.acl_tx++;
 505                 break;
 506         case HCI_SCODATA_PKT:
 507                 hdev->stat.sco_tx++;
 508                 break;
 509         };
 510
 511         /* Prepend skb with frame type */
 512         memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
 513
 514         count = skb->len;
 515
 516         /* Max HCI frame size seems to be 1511 + 1 */
 517         if (!(nskb = bt_skb_alloc(count + 32, GFP_ATOMIC))) {
 518                 BT_ERR("Can't allocate memory for new packet");
 519                 return -ENOMEM;
 520         }
 521
 522         nskb->dev = (void *) bfusb;
 523
 524         while (count) {
 525                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE);
 526
 527                 buf[0] = 0xc1 | ((sent == 0) ? 0x04 : 0) | ((count == size) ? 0x08 : 0);
 528                 buf[1] = 0x00;
 529                 buf[2] = (size == BFUSB_MAX_BLOCK_SIZE) ? 0 : size;
 530
 531                 memcpy(skb_put(nskb, 3), buf, 3);
 532                 memcpy(skb_put(nskb, size), skb->data + sent, size);
 533
 534                 sent  += size;
 535                 count -= size;
 536         }
 537
 538         /* Don't send frame with multiple size of bulk max packet */
 539         if ((nskb->len % bfusb->bulk_pkt_size) == 0) {
 540                 buf[0] = 0xdd;
 541                 buf[1] = 0x00;
 542                 memcpy(skb_put(nskb, 2), buf, 2);
 543         }
 544
 545         read_lock(&bfusb->lock);
 546
 547         skb_queue_tail(&bfusb->transmit_q, nskb);
 548         bfusb_tx_wakeup(bfusb);
 549
 550         read_unlock(&bfusb->lock);
 551
 552         kfree_skb(skb);
 553
 554         return 0;
 555 }
 556
 557 static void bfusb_destruct(struct hci_dev *hdev)
 558 {
 559         struct bfusb *bfusb = (struct bfusb *) hdev->driver_data;
 560
 561         BT_DBG("hdev %p bfusb %p", hdev, bfusb);
 562
 563         kfree(bfusb);
 564 }
 565
 566 static int bfusb_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
 567 {
 568         return -ENOIOCTLCMD;
 569 }
 570
 571
 572 static int bfusb_load_firmware(struct bfusb *bfusb, unsigned char *firmware, int count)
 573 {
 574         unsigned char *buf;
 575         int err, pipe, len, size, sent = 0;
 576
 577         BT_DBG("bfusb %p udev %p", bfusb, bfusb->udev);
 578
 579         BT_INFO("BlueFRITZ! USB loading firmware");
 580
 581         pipe = usb_sndctrlpipe(bfusb->udev, 0);
 582
 583         if (usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 584                                 0, 1, 0, NULL, 0, USB_CTRL_SET_TIMEOUT) < 0) {
 585                 BT_ERR("Can't change to loading configuration");
 586                 return -EBUSY;
 587         }
 588
 589         bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
 590
 591         buf = kmalloc(BFUSB_MAX_BLOCK_SIZE + 3, GFP_ATOMIC);
 592         if (!buf) {
 593                 BT_ERR("Can't allocate memory chunk for firmware");
 594                 return -ENOMEM;
 595         }
 596
 597         pipe = usb_sndbulkpipe(bfusb->udev, bfusb->bulk_out_ep);
 598
 599         while (count) {
 600                 size = min_t(uint, count, BFUSB_MAX_BLOCK_SIZE + 3);
 601
 602                 memcpy(buf, firmware + sent, size);
 603
 604                 err = usb_bulk_msg(bfusb->udev, pipe, buf, size,
 605                                         &len, BFUSB_BLOCK_TIMEOUT);
 606
 607                 if (err || (len != size)) {
 608                         BT_ERR("Error in firmware loading");
 609                         goto error;
 610                 }
 611
 612                 sent  += size;
 613                 count -= size;
 614         }
 615
 616         if ((err = usb_bulk_msg(bfusb->udev, pipe, NULL, 0,
 617                                 &len, BFUSB_BLOCK_TIMEOUT)) < 0) {
 618                 BT_ERR("Error in null packet request");
 619                 goto error;
 620         }
 621
 622         pipe = usb_sndctrlpipe(bfusb->udev, 0);
 623
 624         if ((err = usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 625                                 0, 2, 0, NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0) {
 626                 BT_ERR("Can't change to running configuration");
 627                 goto error;
 628         }
 629
 630         bfusb->udev->toggle[0] = bfusb->udev->toggle[1] = 0;
 631
 632         BT_INFO("BlueFRITZ! USB device ready");
 633
 634         kfree(buf);
 635         return 0;
 636
 637 error:
 638         kfree(buf);
 639
 640         pipe = usb_sndctrlpipe(bfusb->udev, 0);
 641
 642         usb_control_msg(bfusb->udev, pipe, USB_REQ_SET_CONFIGURATION,
 643                                 0, 0, 0, NULL, 0, USB_CTRL_SET_TIMEOUT);
 644
 645         return err;
 646 }
 647
 648 static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 649 {
 650         const struct firmware *firmware;
 651         struct usb_device *udev = interface_to_usbdev(intf);
 652         struct usb_host_endpoint *bulk_out_ep;
 653         struct usb_host_endpoint *bulk_in_ep;
 654         struct hci_dev *hdev;
 655         struct bfusb *bfusb;
 656
 657         BT_DBG("intf %p id %p", intf, id);
 658
 659         if (ignore)
 660                 return -ENODEV;
 661
 662         /* Check number of endpoints */
 663         if (intf->cur_altsetting->desc.bNumEndpoints < 2)
 664                 return -EIO;
 665
 666         bulk_out_ep = &intf->cur_altsetting->endpoint[0];
 667         bulk_in_ep  = &intf->cur_altsetting->endpoint[1];
 668
 669         if (!bulk_out_ep || !bulk_in_ep) {
 670                 BT_ERR("Bulk endpoints not found");
 671                 goto done;
 672         }
 673
 674         /* Initialize control structure and load firmware */
 675         if (!(bfusb = kzalloc(sizeof(struct bfusb), GFP_KERNEL))) {
 676                 BT_ERR("Can't allocate memory for control structure");
 677                 goto done;
 678         }
 679
 680         bfusb->udev = udev;
 681         bfusb->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
 682         bfusb->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 683         bfusb->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
 684
 685         rwlock_init(&bfusb->lock);
 686
 687         bfusb->reassembly = NULL;
 688
 689         skb_queue_head_init(&bfusb->transmit_q);
 690         skb_queue_head_init(&bfusb->pending_q);
 691         skb_queue_head_init(&bfusb->completed_q);
 692
 693         if (request_firmware(&firmware, "bfubase.frm", &udev->dev) < 0) {
 694                 BT_ERR("Firmware request failed");
 695                 goto error;
 696         }
 697
 698         BT_DBG("firmware data %p size %d", firmware->data, firmware->size);
 699
 700         if (bfusb_load_firmware(bfusb, firmware->data, firmware->size) < 0) {
 701                 BT_ERR("Firmware loading failed");
 702                 goto release;
 703         }
 704
 705         release_firmware(firmware);
 706
 707         /* Initialize and register HCI device */
 708         hdev = hci_alloc_dev();
 709         if (!hdev) {
 710                 BT_ERR("Can't allocate HCI device");
 711                 goto error;
 712         }
 713
 714         bfusb->hdev = hdev;
 715
 716         hdev->type = HCI_USB;
 717         hdev->driver_data = bfusb;
 718         SET_HCIDEV_DEV(hdev, &intf->dev);
 719
 720         hdev->open     = bfusb_open;
 721         hdev->close    = bfusb_close;
 722         hdev->flush    = bfusb_flush;
 723         hdev->send     = bfusb_send_frame;
 724         hdev->destruct = bfusb_destruct;
 725         hdev->ioctl    = bfusb_ioctl;
 726
 727         hdev->owner = THIS_MODULE;
 728
 729         if (hci_register_dev(hdev) < 0) {
 730                 BT_ERR("Can't register HCI device");
 731                 hci_free_dev(hdev);
 732                 goto error;
 733         }
 734
 735         usb_set_intfdata(intf, bfusb);
 736
 737         return 0;
 738
 739 release:
 740         release_firmware(firmware);
 741
 742 error:
 743         kfree(bfusb);
 744
 745 done:
 746         return -EIO;
 747 }
 748
 749 static void bfusb_disconnect(struct usb_interface *intf)
 750 {
 751         struct bfusb *bfusb = usb_get_intfdata(intf);
 752         struct hci_dev *hdev = bfusb->hdev;
 753
 754         BT_DBG("intf %p", intf);
 755
 756         if (!hdev)
 757                 return;
 758
 759         usb_set_intfdata(intf, NULL);
 760
 761         bfusb_close(hdev);
 762
 763         if (hci_unregister_dev(hdev) < 0)
 764                 BT_ERR("Can't unregister HCI device %s", hdev->name);
 765
 766         hci_free_dev(hdev);
 767 }
 768
 769 static struct usb_driver bfusb_driver = {
 770         .name           = "bfusb",
 771         .probe          = bfusb_probe,
 772         .disconnect     = bfusb_disconnect,
 773         .id_table       = bfusb_table,
 774 };
 775
 776 static int __init bfusb_init(void)
 777 {
 778         int err;
 779
 780         BT_INFO("BlueFRITZ! USB driver ver %s", VERSION);
 781
 782         if ((err = usb_register(&bfusb_driver)) < 0)
 783                 BT_ERR("Failed to register BlueFRITZ! USB driver");
 784
 785         return err;
 786 }
 787
 788 static void __exit bfusb_exit(void)
 789 {
 790         usb_deregister(&bfusb_driver);
 791 }
 792
 793 module_init(bfusb_init);
 794 module_exit(bfusb_exit);
 795
 796 module_param(ignore, bool, 0644);
 797 MODULE_PARM_DESC(ignore, "Ignore devices from the matching table");
 798
 799 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 800 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
 801 MODULE_VERSION(VERSION);
 802 MODULE_LICENSE("GPL");