drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  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/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57
  58 static struct usb_device_id btusb_table[] = {
  59         /* Generic Bluetooth USB device */
  60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  61
  62         /* Apple MacBookPro 7,1 */
  63         { USB_DEVICE(0x05ac, 0x8213) },
  64
  65         /* Apple iMac11,1 */
  66         { USB_DEVICE(0x05ac, 0x8215) },
  67
  68         /* Apple MacBookPro6,2 */
  69         { USB_DEVICE(0x05ac, 0x8218) },
  70
  71         /* Apple MacBookAir3,1, MacBookAir3,2 */
  72         { USB_DEVICE(0x05ac, 0x821b) },
  73
  74         /* Apple MacBookPro8,2 */
  75         { USB_DEVICE(0x05ac, 0x821a) },
  76
  77         /* AVM BlueFRITZ! USB v2.0 */
  78         { USB_DEVICE(0x057c, 0x3800) },
  79
  80         /* Bluetooth Ultraport Module from IBM */
  81         { USB_DEVICE(0x04bf, 0x030a) },
  82
  83         /* ALPS Modules with non-standard id */
  84         { USB_DEVICE(0x044e, 0x3001) },
  85         { USB_DEVICE(0x044e, 0x3002) },
  86
  87         /* Ericsson with non-standard id */
  88         { USB_DEVICE(0x0bdb, 0x1002) },
  89
  90         /* Canyon CN-BTU1 with HID interfaces */
  91         { USB_DEVICE(0x0c10, 0x0000) },
  92
  93         { }     /* Terminating entry */
  94 };
  95
  96 MODULE_DEVICE_TABLE(usb, btusb_table);
  97
  98 static struct usb_device_id blacklist_table[] = {
  99         /* CSR BlueCore devices */
 100         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 101
 102         /* Broadcom BCM2033 without firmware */
 103         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 104
 105         /* Atheros 3011 with sflash firmware */
 106         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 107         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 108
 109         /* Atheros AR9285 Malbec with sflash firmware */
 110         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 111
 112         /* Atheros 3012 with sflash firmware */
 113         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE },
 114
 115         /* Atheros AR5BBU12 with sflash firmware */
 116         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 117
 118         /* Broadcom BCM2035 */
 119         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 120         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 121         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 122
 123         /* Broadcom BCM2045 */
 124         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 125         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 126
 127         /* IBM/Lenovo ThinkPad with Broadcom chip */
 128         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 129         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 130
 131         /* HP laptop with Broadcom chip */
 132         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 133
 134         /* Dell laptop with Broadcom chip */
 135         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 136
 137         /* Dell Wireless 370 and 410 devices */
 138         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 139         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 140
 141         /* Belkin F8T012 and F8T013 devices */
 142         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 144
 145         /* Asus WL-BTD202 device */
 146         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 147
 148         /* Kensington Bluetooth USB adapter */
 149         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 150
 151         /* RTX Telecom based adapters with buggy SCO support */
 152         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 153         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 154
 155         /* CONWISE Technology based adapters with buggy SCO support */
 156         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 157
 158         /* Digianswer devices */
 159         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 160         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 161
 162         /* CSR BlueCore Bluetooth Sniffer */
 163         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 164
 165         /* Frontline ComProbe Bluetooth Sniffer */
 166         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 167
 168         { }     /* Terminating entry */
 169 };
 170
 171 #define BTUSB_MAX_ISOC_FRAMES   10
 172
 173 #define BTUSB_INTR_RUNNING      0
 174 #define BTUSB_BULK_RUNNING      1
 175 #define BTUSB_ISOC_RUNNING      2
 176 #define BTUSB_SUSPENDING        3
 177 #define BTUSB_DID_ISO_RESUME    4
 178
 179 struct btusb_data {
 180         struct hci_dev       *hdev;
 181         struct usb_device    *udev;
 182         struct usb_interface *intf;
 183         struct usb_interface *isoc;
 184
 185         spinlock_t lock;
 186
 187         unsigned long flags;
 188
 189         struct work_struct work;
 190         struct work_struct waker;
 191
 192         struct usb_anchor tx_anchor;
 193         struct usb_anchor intr_anchor;
 194         struct usb_anchor bulk_anchor;
 195         struct usb_anchor isoc_anchor;
 196         struct usb_anchor deferred;
 197         int tx_in_flight;
 198         spinlock_t txlock;
 199
 200         struct usb_endpoint_descriptor *intr_ep;
 201         struct usb_endpoint_descriptor *bulk_tx_ep;
 202         struct usb_endpoint_descriptor *bulk_rx_ep;
 203         struct usb_endpoint_descriptor *isoc_tx_ep;
 204         struct usb_endpoint_descriptor *isoc_rx_ep;
 205
 206         __u8 cmdreq_type;
 207
 208         unsigned int sco_num;
 209         int isoc_altsetting;
 210         int suspend_count;
 211 };
 212
 213 static int inc_tx(struct btusb_data *data)
 214 {
 215         unsigned long flags;
 216         int rv;
 217
 218         spin_lock_irqsave(&data->txlock, flags);
 219         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 220         if (!rv)
 221                 data->tx_in_flight++;
 222         spin_unlock_irqrestore(&data->txlock, flags);
 223
 224         return rv;
 225 }
 226
 227 static void btusb_intr_complete(struct urb *urb)
 228 {
 229         struct hci_dev *hdev = urb->context;
 230         struct btusb_data *data = hdev->driver_data;
 231         int err;
 232
 233         BT_DBG("%s urb %p status %d count %d", hdev->name,
 234                                         urb, urb->status, urb->actual_length);
 235
 236         if (!test_bit(HCI_RUNNING, &hdev->flags))
 237                 return;
 238
 239         if (urb->status == 0) {
 240                 hdev->stat.byte_rx += urb->actual_length;
 241
 242                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 243                                                 urb->transfer_buffer,
 244                                                 urb->actual_length) < 0) {
 245                         BT_ERR("%s corrupted event packet", hdev->name);
 246                         hdev->stat.err_rx++;
 247                 }
 248         }
 249
 250         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 251                 return;
 252
 253         usb_mark_last_busy(data->udev);
 254         usb_anchor_urb(urb, &data->intr_anchor);
 255
 256         err = usb_submit_urb(urb, GFP_ATOMIC);
 257         if (err < 0) {
 258                 if (err != -EPERM)
 259                         BT_ERR("%s urb %p failed to resubmit (%d)",
 260                                                 hdev->name, urb, -err);
 261                 usb_unanchor_urb(urb);
 262         }
 263 }
 264
 265 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 266 {
 267         struct btusb_data *data = hdev->driver_data;
 268         struct urb *urb;
 269         unsigned char *buf;
 270         unsigned int pipe;
 271         int err, size;
 272
 273         BT_DBG("%s", hdev->name);
 274
 275         if (!data->intr_ep)
 276                 return -ENODEV;
 277
 278         urb = usb_alloc_urb(0, mem_flags);
 279         if (!urb)
 280                 return -ENOMEM;
 281
 282         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 283
 284         buf = kmalloc(size, mem_flags);
 285         if (!buf) {
 286                 usb_free_urb(urb);
 287                 return -ENOMEM;
 288         }
 289
 290         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 291
 292         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 293                                                 btusb_intr_complete, hdev,
 294                                                 data->intr_ep->bInterval);
 295
 296         urb->transfer_flags |= URB_FREE_BUFFER;
 297
 298         usb_anchor_urb(urb, &data->intr_anchor);
 299
 300         err = usb_submit_urb(urb, mem_flags);
 301         if (err < 0) {
 302                 BT_ERR("%s urb %p submission failed (%d)",
 303                                                 hdev->name, urb, -err);
 304                 usb_unanchor_urb(urb);
 305         }
 306
 307         usb_free_urb(urb);
 308
 309         return err;
 310 }
 311
 312 static void btusb_bulk_complete(struct urb *urb)
 313 {
 314         struct hci_dev *hdev = urb->context;
 315         struct btusb_data *data = hdev->driver_data;
 316         int err;
 317
 318         BT_DBG("%s urb %p status %d count %d", hdev->name,
 319                                         urb, urb->status, urb->actual_length);
 320
 321         if (!test_bit(HCI_RUNNING, &hdev->flags))
 322                 return;
 323
 324         if (urb->status == 0) {
 325                 hdev->stat.byte_rx += urb->actual_length;
 326
 327                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 328                                                 urb->transfer_buffer,
 329                                                 urb->actual_length) < 0) {
 330                         BT_ERR("%s corrupted ACL packet", hdev->name);
 331                         hdev->stat.err_rx++;
 332                 }
 333         }
 334
 335         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 336                 return;
 337
 338         usb_anchor_urb(urb, &data->bulk_anchor);
 339         usb_mark_last_busy(data->udev);
 340
 341         err = usb_submit_urb(urb, GFP_ATOMIC);
 342         if (err < 0) {
 343                 if (err != -EPERM)
 344                         BT_ERR("%s urb %p failed to resubmit (%d)",
 345                                                 hdev->name, urb, -err);
 346                 usb_unanchor_urb(urb);
 347         }
 348 }
 349
 350 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 351 {
 352         struct btusb_data *data = hdev->driver_data;
 353         struct urb *urb;
 354         unsigned char *buf;
 355         unsigned int pipe;
 356         int err, size = HCI_MAX_FRAME_SIZE;
 357
 358         BT_DBG("%s", hdev->name);
 359
 360         if (!data->bulk_rx_ep)
 361                 return -ENODEV;
 362
 363         urb = usb_alloc_urb(0, mem_flags);
 364         if (!urb)
 365                 return -ENOMEM;
 366
 367         buf = kmalloc(size, mem_flags);
 368         if (!buf) {
 369                 usb_free_urb(urb);
 370                 return -ENOMEM;
 371         }
 372
 373         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 374
 375         usb_fill_bulk_urb(urb, data->udev, pipe,
 376                                         buf, size, btusb_bulk_complete, hdev);
 377
 378         urb->transfer_flags |= URB_FREE_BUFFER;
 379
 380         usb_mark_last_busy(data->udev);
 381         usb_anchor_urb(urb, &data->bulk_anchor);
 382
 383         err = usb_submit_urb(urb, mem_flags);
 384         if (err < 0) {
 385                 BT_ERR("%s urb %p submission failed (%d)",
 386                                                 hdev->name, urb, -err);
 387                 usb_unanchor_urb(urb);
 388         }
 389
 390         usb_free_urb(urb);
 391
 392         return err;
 393 }
 394
 395 static void btusb_isoc_complete(struct urb *urb)
 396 {
 397         struct hci_dev *hdev = urb->context;
 398         struct btusb_data *data = hdev->driver_data;
 399         int i, err;
 400
 401         BT_DBG("%s urb %p status %d count %d", hdev->name,
 402                                         urb, urb->status, urb->actual_length);
 403
 404         if (!test_bit(HCI_RUNNING, &hdev->flags))
 405                 return;
 406
 407         if (urb->status == 0) {
 408                 for (i = 0; i < urb->number_of_packets; i++) {
 409                         unsigned int offset = urb->iso_frame_desc[i].offset;
 410                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 411
 412                         if (urb->iso_frame_desc[i].status)
 413                                 continue;
 414
 415                         hdev->stat.byte_rx += length;
 416
 417                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 418                                                 urb->transfer_buffer + offset,
 419                                                                 length) < 0) {
 420                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 421                                 hdev->stat.err_rx++;
 422                         }
 423                 }
 424         }
 425
 426         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 427                 return;
 428
 429         usb_anchor_urb(urb, &data->isoc_anchor);
 430
 431         err = usb_submit_urb(urb, GFP_ATOMIC);
 432         if (err < 0) {
 433                 if (err != -EPERM)
 434                         BT_ERR("%s urb %p failed to resubmit (%d)",
 435                                                 hdev->name, urb, -err);
 436                 usb_unanchor_urb(urb);
 437         }
 438 }
 439
 440 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 441 {
 442         int i, offset = 0;
 443
 444         BT_DBG("len %d mtu %d", len, mtu);
 445
 446         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 447                                         i++, offset += mtu, len -= mtu) {
 448                 urb->iso_frame_desc[i].offset = offset;
 449                 urb->iso_frame_desc[i].length = mtu;
 450         }
 451
 452         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 453                 urb->iso_frame_desc[i].offset = offset;
 454                 urb->iso_frame_desc[i].length = len;
 455                 i++;
 456         }
 457
 458         urb->number_of_packets = i;
 459 }
 460
 461 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 462 {
 463         struct btusb_data *data = hdev->driver_data;
 464         struct urb *urb;
 465         unsigned char *buf;
 466         unsigned int pipe;
 467         int err, size;
 468
 469         BT_DBG("%s", hdev->name);
 470
 471         if (!data->isoc_rx_ep)
 472                 return -ENODEV;
 473
 474         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 475         if (!urb)
 476                 return -ENOMEM;
 477
 478         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 479                                                 BTUSB_MAX_ISOC_FRAMES;
 480
 481         buf = kmalloc(size, mem_flags);
 482         if (!buf) {
 483                 usb_free_urb(urb);
 484                 return -ENOMEM;
 485         }
 486
 487         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 488
 489         urb->dev      = data->udev;
 490         urb->pipe     = pipe;
 491         urb->context  = hdev;
 492         urb->complete = btusb_isoc_complete;
 493         urb->interval = data->isoc_rx_ep->bInterval;
 494
 495         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 496         urb->transfer_buffer = buf;
 497         urb->transfer_buffer_length = size;
 498
 499         __fill_isoc_descriptor(urb, size,
 500                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 501
 502         usb_anchor_urb(urb, &data->isoc_anchor);
 503
 504         err = usb_submit_urb(urb, mem_flags);
 505         if (err < 0) {
 506                 BT_ERR("%s urb %p submission failed (%d)",
 507                                                 hdev->name, urb, -err);
 508                 usb_unanchor_urb(urb);
 509         }
 510
 511         usb_free_urb(urb);
 512
 513         return err;
 514 }
 515
 516 static void btusb_tx_complete(struct urb *urb)
 517 {
 518         struct sk_buff *skb = urb->context;
 519         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 520         struct btusb_data *data = hdev->driver_data;
 521
 522         BT_DBG("%s urb %p status %d count %d", hdev->name,
 523                                         urb, urb->status, urb->actual_length);
 524
 525         if (!test_bit(HCI_RUNNING, &hdev->flags))
 526                 goto done;
 527
 528         if (!urb->status)
 529                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 530         else
 531                 hdev->stat.err_tx++;
 532
 533 done:
 534         spin_lock(&data->txlock);
 535         data->tx_in_flight--;
 536         spin_unlock(&data->txlock);
 537
 538         kfree(urb->setup_packet);
 539
 540         kfree_skb(skb);
 541 }
 542
 543 static void btusb_isoc_tx_complete(struct urb *urb)
 544 {
 545         struct sk_buff *skb = urb->context;
 546         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 547
 548         BT_DBG("%s urb %p status %d count %d", hdev->name,
 549                                         urb, urb->status, urb->actual_length);
 550
 551         if (!test_bit(HCI_RUNNING, &hdev->flags))
 552                 goto done;
 553
 554         if (!urb->status)
 555                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 556         else
 557                 hdev->stat.err_tx++;
 558
 559 done:
 560         kfree(urb->setup_packet);
 561
 562         kfree_skb(skb);
 563 }
 564
 565 static int btusb_open(struct hci_dev *hdev)
 566 {
 567         struct btusb_data *data = hdev->driver_data;
 568         int err;
 569
 570         BT_DBG("%s", hdev->name);
 571
 572         err = usb_autopm_get_interface(data->intf);
 573         if (err < 0)
 574                 return err;
 575
 576         data->intf->needs_remote_wakeup = 1;
 577
 578         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 579                 goto done;
 580
 581         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 582                 goto done;
 583
 584         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 585         if (err < 0)
 586                 goto failed;
 587
 588         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 589         if (err < 0) {
 590                 usb_kill_anchored_urbs(&data->intr_anchor);
 591                 goto failed;
 592         }
 593
 594         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 595         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 596
 597 done:
 598         usb_autopm_put_interface(data->intf);
 599         return 0;
 600
 601 failed:
 602         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 603         clear_bit(HCI_RUNNING, &hdev->flags);
 604         usb_autopm_put_interface(data->intf);
 605         return err;
 606 }
 607
 608 static void btusb_stop_traffic(struct btusb_data *data)
 609 {
 610         usb_kill_anchored_urbs(&data->intr_anchor);
 611         usb_kill_anchored_urbs(&data->bulk_anchor);
 612         usb_kill_anchored_urbs(&data->isoc_anchor);
 613 }
 614
 615 static int btusb_close(struct hci_dev *hdev)
 616 {
 617         struct btusb_data *data = hdev->driver_data;
 618         int err;
 619
 620         BT_DBG("%s", hdev->name);
 621
 622         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 623                 return 0;
 624
 625         cancel_work_sync(&data->work);
 626         cancel_work_sync(&data->waker);
 627
 628         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 629         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 630         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 631
 632         btusb_stop_traffic(data);
 633         err = usb_autopm_get_interface(data->intf);
 634         if (err < 0)
 635                 goto failed;
 636
 637         data->intf->needs_remote_wakeup = 0;
 638         usb_autopm_put_interface(data->intf);
 639
 640 failed:
 641         usb_scuttle_anchored_urbs(&data->deferred);
 642         return 0;
 643 }
 644
 645 static int btusb_flush(struct hci_dev *hdev)
 646 {
 647         struct btusb_data *data = hdev->driver_data;
 648
 649         BT_DBG("%s", hdev->name);
 650
 651         usb_kill_anchored_urbs(&data->tx_anchor);
 652
 653         return 0;
 654 }
 655
 656 static int btusb_send_frame(struct sk_buff *skb)
 657 {
 658         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 659         struct btusb_data *data = hdev->driver_data;
 660         struct usb_ctrlrequest *dr;
 661         struct urb *urb;
 662         unsigned int pipe;
 663         int err;
 664
 665         BT_DBG("%s", hdev->name);
 666
 667         if (!test_bit(HCI_RUNNING, &hdev->flags))
 668                 return -EBUSY;
 669
 670         switch (bt_cb(skb)->pkt_type) {
 671         case HCI_COMMAND_PKT:
 672                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 673                 if (!urb)
 674                         return -ENOMEM;
 675
 676                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 677                 if (!dr) {
 678                         usb_free_urb(urb);
 679                         return -ENOMEM;
 680                 }
 681
 682                 dr->bRequestType = data->cmdreq_type;
 683                 dr->bRequest     = 0;
 684                 dr->wIndex       = 0;
 685                 dr->wValue       = 0;
 686                 dr->wLength      = __cpu_to_le16(skb->len);
 687
 688                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 689
 690                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 691                                 skb->data, skb->len, btusb_tx_complete, skb);
 692
 693                 hdev->stat.cmd_tx++;
 694                 break;
 695
 696         case HCI_ACLDATA_PKT:
 697                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
 698                                                 hdev->conn_hash.le_num < 1))
 699                         return -ENODEV;
 700
 701                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 702                 if (!urb)
 703                         return -ENOMEM;
 704
 705                 pipe = usb_sndbulkpipe(data->udev,
 706                                         data->bulk_tx_ep->bEndpointAddress);
 707
 708                 usb_fill_bulk_urb(urb, data->udev, pipe,
 709                                 skb->data, skb->len, btusb_tx_complete, skb);
 710
 711                 hdev->stat.acl_tx++;
 712                 break;
 713
 714         case HCI_SCODATA_PKT:
 715                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 716                         return -ENODEV;
 717
 718                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 719                 if (!urb)
 720                         return -ENOMEM;
 721
 722                 pipe = usb_sndisocpipe(data->udev,
 723                                         data->isoc_tx_ep->bEndpointAddress);
 724
 725                 usb_fill_int_urb(urb, data->udev, pipe,
 726                                 skb->data, skb->len, btusb_isoc_tx_complete,
 727                                 skb, data->isoc_tx_ep->bInterval);
 728
 729                 urb->transfer_flags  = URB_ISO_ASAP;
 730
 731                 __fill_isoc_descriptor(urb, skb->len,
 732                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 733
 734                 hdev->stat.sco_tx++;
 735                 goto skip_waking;
 736
 737         default:
 738                 return -EILSEQ;
 739         }
 740
 741         err = inc_tx(data);
 742         if (err) {
 743                 usb_anchor_urb(urb, &data->deferred);
 744                 schedule_work(&data->waker);
 745                 err = 0;
 746                 goto done;
 747         }
 748
 749 skip_waking:
 750         usb_anchor_urb(urb, &data->tx_anchor);
 751
 752         err = usb_submit_urb(urb, GFP_ATOMIC);
 753         if (err < 0) {
 754                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 755                 kfree(urb->setup_packet);
 756                 usb_unanchor_urb(urb);
 757         } else {
 758                 usb_mark_last_busy(data->udev);
 759         }
 760
 761         usb_free_urb(urb);
 762
 763 done:
 764         return err;
 765 }
 766
 767 static void btusb_destruct(struct hci_dev *hdev)
 768 {
 769         struct btusb_data *data = hdev->driver_data;
 770
 771         BT_DBG("%s", hdev->name);
 772
 773         kfree(data);
 774 }
 775
 776 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 777 {
 778         struct btusb_data *data = hdev->driver_data;
 779
 780         BT_DBG("%s evt %d", hdev->name, evt);
 781
 782         if (hdev->conn_hash.sco_num != data->sco_num) {
 783                 data->sco_num = hdev->conn_hash.sco_num;
 784                 schedule_work(&data->work);
 785         }
 786 }
 787
 788 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 789 {
 790         struct btusb_data *data = hdev->driver_data;
 791         struct usb_interface *intf = data->isoc;
 792         struct usb_endpoint_descriptor *ep_desc;
 793         int i, err;
 794
 795         if (!data->isoc)
 796                 return -ENODEV;
 797
 798         err = usb_set_interface(data->udev, 1, altsetting);
 799         if (err < 0) {
 800                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 801                 return err;
 802         }
 803
 804         data->isoc_altsetting = altsetting;
 805
 806         data->isoc_tx_ep = NULL;
 807         data->isoc_rx_ep = NULL;
 808
 809         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 810                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 811
 812                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 813                         data->isoc_tx_ep = ep_desc;
 814                         continue;
 815                 }
 816
 817                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 818                         data->isoc_rx_ep = ep_desc;
 819                         continue;
 820                 }
 821         }
 822
 823         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 824                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 825                 return -ENODEV;
 826         }
 827
 828         return 0;
 829 }
 830
 831 static void btusb_work(struct work_struct *work)
 832 {
 833         struct btusb_data *data = container_of(work, struct btusb_data, work);
 834         struct hci_dev *hdev = data->hdev;
 835         int err;
 836
 837         if (hdev->conn_hash.sco_num > 0) {
 838                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 839                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 840                         if (err < 0) {
 841                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 842                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 843                                 return;
 844                         }
 845
 846                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 847                 }
 848                 if (data->isoc_altsetting != 2) {
 849                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 850                         usb_kill_anchored_urbs(&data->isoc_anchor);
 851
 852                         if (__set_isoc_interface(hdev, 2) < 0)
 853                                 return;
 854                 }
 855
 856                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 857                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 858                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 859                         else
 860                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 861                 }
 862         } else {
 863                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 864                 usb_kill_anchored_urbs(&data->isoc_anchor);
 865
 866                 __set_isoc_interface(hdev, 0);
 867                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 868                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 869         }
 870 }
 871
 872 static void btusb_waker(struct work_struct *work)
 873 {
 874         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 875         int err;
 876
 877         err = usb_autopm_get_interface(data->intf);
 878         if (err < 0)
 879                 return;
 880
 881         usb_autopm_put_interface(data->intf);
 882 }
 883
 884 static int btusb_probe(struct usb_interface *intf,
 885                                 const struct usb_device_id *id)
 886 {
 887         struct usb_endpoint_descriptor *ep_desc;
 888         struct btusb_data *data;
 889         struct hci_dev *hdev;
 890         int i, err;
 891
 892         BT_DBG("intf %p id %p", intf, id);
 893
 894         /* interface numbers are hardcoded in the spec */
 895         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 896                 return -ENODEV;
 897
 898         if (!id->driver_info) {
 899                 const struct usb_device_id *match;
 900                 match = usb_match_id(intf, blacklist_table);
 901                 if (match)
 902                         id = match;
 903         }
 904
 905         if (id->driver_info == BTUSB_IGNORE)
 906                 return -ENODEV;
 907
 908         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 909                 return -ENODEV;
 910
 911         if (ignore_csr && id->driver_info & BTUSB_CSR)
 912                 return -ENODEV;
 913
 914         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 915                 return -ENODEV;
 916
 917         data = kzalloc(sizeof(*data), GFP_KERNEL);
 918         if (!data)
 919                 return -ENOMEM;
 920
 921         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 922                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 923
 924                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 925                         data->intr_ep = ep_desc;
 926                         continue;
 927                 }
 928
 929                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 930                         data->bulk_tx_ep = ep_desc;
 931                         continue;
 932                 }
 933
 934                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 935                         data->bulk_rx_ep = ep_desc;
 936                         continue;
 937                 }
 938         }
 939
 940         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 941                 kfree(data);
 942                 return -ENODEV;
 943         }
 944
 945         data->cmdreq_type = USB_TYPE_CLASS;
 946
 947         data->udev = interface_to_usbdev(intf);
 948         data->intf = intf;
 949
 950         spin_lock_init(&data->lock);
 951
 952         INIT_WORK(&data->work, btusb_work);
 953         INIT_WORK(&data->waker, btusb_waker);
 954         spin_lock_init(&data->txlock);
 955
 956         init_usb_anchor(&data->tx_anchor);
 957         init_usb_anchor(&data->intr_anchor);
 958         init_usb_anchor(&data->bulk_anchor);
 959         init_usb_anchor(&data->isoc_anchor);
 960         init_usb_anchor(&data->deferred);
 961
 962         hdev = hci_alloc_dev();
 963         if (!hdev) {
 964                 kfree(data);
 965                 return -ENOMEM;
 966         }
 967
 968         hdev->bus = HCI_USB;
 969         hdev->driver_data = data;
 970
 971         data->hdev = hdev;
 972
 973         SET_HCIDEV_DEV(hdev, &intf->dev);
 974
 975         hdev->open     = btusb_open;
 976         hdev->close    = btusb_close;
 977         hdev->flush    = btusb_flush;
 978         hdev->send     = btusb_send_frame;
 979         hdev->destruct = btusb_destruct;
 980         hdev->notify   = btusb_notify;
 981
 982         hdev->owner = THIS_MODULE;
 983
 984         /* Interface numbers are hardcoded in the specification */
 985         data->isoc = usb_ifnum_to_if(data->udev, 1);
 986
 987         if (!reset)
 988                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 989
 990         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 991                 if (!disable_scofix)
 992                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 993         }
 994
 995         if (id->driver_info & BTUSB_BROKEN_ISOC)
 996                 data->isoc = NULL;
 997
 998         if (id->driver_info & BTUSB_DIGIANSWER) {
 999                 data->cmdreq_type = USB_TYPE_VENDOR;
1000                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1001         }
1002
1003         if (id->driver_info & BTUSB_CSR) {
1004                 struct usb_device *udev = data->udev;
1005
1006                 /* Old firmware would otherwise execute USB reset */
1007                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1008                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1009         }
1010
1011         if (id->driver_info & BTUSB_SNIFFER) {
1012                 struct usb_device *udev = data->udev;
1013
1014                 /* New sniffer firmware has crippled HCI interface */
1015                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1016                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1017
1018                 data->isoc = NULL;
1019         }
1020
1021         if (id->driver_info & BTUSB_BCM92035) {
1022                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1023                 struct sk_buff *skb;
1024
1025                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1026                 if (skb) {
1027                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1028                         skb_queue_tail(&hdev->driver_init, skb);
1029                 }
1030         }
1031
1032         if (data->isoc) {
1033                 err = usb_driver_claim_interface(&btusb_driver,
1034                                                         data->isoc, data);
1035                 if (err < 0) {
1036                         hci_free_dev(hdev);
1037                         kfree(data);
1038                         return err;
1039                 }
1040         }
1041
1042         err = hci_register_dev(hdev);
1043         if (err < 0) {
1044                 hci_free_dev(hdev);
1045                 kfree(data);
1046                 return err;
1047         }
1048
1049         usb_set_intfdata(intf, data);
1050
1051         return 0;
1052 }
1053
1054 static void btusb_disconnect(struct usb_interface *intf)
1055 {
1056         struct btusb_data *data = usb_get_intfdata(intf);
1057         struct hci_dev *hdev;
1058
1059         BT_DBG("intf %p", intf);
1060
1061         if (!data)
1062                 return;
1063
1064         hdev = data->hdev;
1065
1066         __hci_dev_hold(hdev);
1067
1068         usb_set_intfdata(data->intf, NULL);
1069
1070         if (data->isoc)
1071                 usb_set_intfdata(data->isoc, NULL);
1072
1073         hci_unregister_dev(hdev);
1074
1075         if (intf == data->isoc)
1076                 usb_driver_release_interface(&btusb_driver, data->intf);
1077         else if (data->isoc)
1078                 usb_driver_release_interface(&btusb_driver, data->isoc);
1079
1080         __hci_dev_put(hdev);
1081
1082         hci_free_dev(hdev);
1083 }
1084
1085 #ifdef CONFIG_PM
1086 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1087 {
1088         struct btusb_data *data = usb_get_intfdata(intf);
1089
1090         BT_DBG("intf %p", intf);
1091
1092         if (data->suspend_count++)
1093                 return 0;
1094
1095         spin_lock_irq(&data->txlock);
1096         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1097                 set_bit(BTUSB_SUSPENDING, &data->flags);
1098                 spin_unlock_irq(&data->txlock);
1099         } else {
1100                 spin_unlock_irq(&data->txlock);
1101                 data->suspend_count--;
1102                 return -EBUSY;
1103         }
1104
1105         cancel_work_sync(&data->work);
1106
1107         btusb_stop_traffic(data);
1108         usb_kill_anchored_urbs(&data->tx_anchor);
1109
1110         return 0;
1111 }
1112
1113 static void play_deferred(struct btusb_data *data)
1114 {
1115         struct urb *urb;
1116         int err;
1117
1118         while ((urb = usb_get_from_anchor(&data->deferred))) {
1119                 err = usb_submit_urb(urb, GFP_ATOMIC);
1120                 if (err < 0)
1121                         break;
1122
1123                 data->tx_in_flight++;
1124         }
1125         usb_scuttle_anchored_urbs(&data->deferred);
1126 }
1127
1128 static int btusb_resume(struct usb_interface *intf)
1129 {
1130         struct btusb_data *data = usb_get_intfdata(intf);
1131         struct hci_dev *hdev = data->hdev;
1132         int err = 0;
1133
1134         BT_DBG("intf %p", intf);
1135
1136         if (--data->suspend_count)
1137                 return 0;
1138
1139         if (!test_bit(HCI_RUNNING, &hdev->flags))
1140                 goto done;
1141
1142         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1143                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1144                 if (err < 0) {
1145                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1146                         goto failed;
1147                 }
1148         }
1149
1150         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1151                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1152                 if (err < 0) {
1153                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1154                         goto failed;
1155                 }
1156
1157                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1158         }
1159
1160         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1161                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1162                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1163                 else
1164                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1165         }
1166
1167         spin_lock_irq(&data->txlock);
1168         play_deferred(data);
1169         clear_bit(BTUSB_SUSPENDING, &data->flags);
1170         spin_unlock_irq(&data->txlock);
1171         schedule_work(&data->work);
1172
1173         return 0;
1174
1175 failed:
1176         usb_scuttle_anchored_urbs(&data->deferred);
1177 done:
1178         spin_lock_irq(&data->txlock);
1179         clear_bit(BTUSB_SUSPENDING, &data->flags);
1180         spin_unlock_irq(&data->txlock);
1181
1182         return err;
1183 }
1184 #endif
1185
1186 static struct usb_driver btusb_driver = {
1187         .name           = "btusb",
1188         .probe          = btusb_probe,
1189         .disconnect     = btusb_disconnect,
1190 #ifdef CONFIG_PM
1191         .suspend        = btusb_suspend,
1192         .resume         = btusb_resume,
1193 #endif
1194         .id_table       = btusb_table,
1195         .supports_autosuspend = 1,
1196 };
1197
1198 static int __init btusb_init(void)
1199 {
1200         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1201
1202         return usb_register(&btusb_driver);
1203 }
1204
1205 static void __exit btusb_exit(void)
1206 {
1207         usb_deregister(&btusb_driver);
1208 }
1209
1210 module_init(btusb_init);
1211 module_exit(btusb_exit);
1212
1213 module_param(ignore_dga, bool, 0644);
1214 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1215
1216 module_param(ignore_csr, bool, 0644);
1217 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1218
1219 module_param(ignore_sniffer, bool, 0644);
1220 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1221
1222 module_param(disable_scofix, bool, 0644);
1223 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1224
1225 module_param(force_scofix, bool, 0644);
1226 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1227
1228 module_param(reset, bool, 0644);
1229 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1230
1231 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1232 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1233 MODULE_VERSION(VERSION);
1234 MODULE_LICENSE("GPL");