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 #define BTUSB_ATH3012           0x80
  58
  59 static struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x05ac, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x413c, 0x8197) },
 105
 106         { }     /* Terminating entry */
 107 };
 108
 109 MODULE_DEVICE_TABLE(usb, btusb_table);
 110
 111 static struct usb_device_id blacklist_table[] = {
 112         /* CSR BlueCore devices */
 113         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 114
 115         /* Broadcom BCM2033 without firmware */
 116         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 117
 118         /* Atheros 3011 with sflash firmware */
 119         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 120         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 121         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 122
 123         /* Atheros AR9285 Malbec with sflash firmware */
 124         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 125
 126         /* Atheros 3012 with sflash firmware */
 127         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 128
 129         /* Atheros AR5BBU12 with sflash firmware */
 130         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 131
 132         /* Broadcom BCM2035 */
 133         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 134         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 135         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 136
 137         /* Broadcom BCM2045 */
 138         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 139         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 140
 141         /* IBM/Lenovo ThinkPad with Broadcom chip */
 142         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 144
 145         /* HP laptop with Broadcom chip */
 146         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 147
 148         /* Dell laptop with Broadcom chip */
 149         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 150
 151         /* Dell Wireless 370 and 410 devices */
 152         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 154
 155         /* Belkin F8T012 and F8T013 devices */
 156         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 157         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* Asus WL-BTD202 device */
 160         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 161
 162         /* Kensington Bluetooth USB adapter */
 163         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 164
 165         /* RTX Telecom based adapters with buggy SCO support */
 166         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 167         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 168
 169         /* CONWISE Technology based adapters with buggy SCO support */
 170         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 171
 172         /* Digianswer devices */
 173         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 174         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 175
 176         /* CSR BlueCore Bluetooth Sniffer */
 177         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 178
 179         /* Frontline ComProbe Bluetooth Sniffer */
 180         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 181
 182         { }     /* Terminating entry */
 183 };
 184
 185 #define BTUSB_MAX_ISOC_FRAMES   10
 186
 187 #define BTUSB_INTR_RUNNING      0
 188 #define BTUSB_BULK_RUNNING      1
 189 #define BTUSB_ISOC_RUNNING      2
 190 #define BTUSB_SUSPENDING        3
 191 #define BTUSB_DID_ISO_RESUME    4
 192
 193 struct btusb_data {
 194         struct hci_dev       *hdev;
 195         struct usb_device    *udev;
 196         struct usb_interface *intf;
 197         struct usb_interface *isoc;
 198
 199         spinlock_t lock;
 200
 201         unsigned long flags;
 202
 203         struct work_struct work;
 204         struct work_struct waker;
 205
 206         struct usb_anchor tx_anchor;
 207         struct usb_anchor intr_anchor;
 208         struct usb_anchor bulk_anchor;
 209         struct usb_anchor isoc_anchor;
 210         struct usb_anchor deferred;
 211         int tx_in_flight;
 212         spinlock_t txlock;
 213
 214         struct usb_endpoint_descriptor *intr_ep;
 215         struct usb_endpoint_descriptor *bulk_tx_ep;
 216         struct usb_endpoint_descriptor *bulk_rx_ep;
 217         struct usb_endpoint_descriptor *isoc_tx_ep;
 218         struct usb_endpoint_descriptor *isoc_rx_ep;
 219
 220         __u8 cmdreq_type;
 221
 222         unsigned int sco_num;
 223         int isoc_altsetting;
 224         int suspend_count;
 225 };
 226
 227 static int inc_tx(struct btusb_data *data)
 228 {
 229         unsigned long flags;
 230         int rv;
 231
 232         spin_lock_irqsave(&data->txlock, flags);
 233         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 234         if (!rv)
 235                 data->tx_in_flight++;
 236         spin_unlock_irqrestore(&data->txlock, flags);
 237
 238         return rv;
 239 }
 240
 241 static void btusb_intr_complete(struct urb *urb)
 242 {
 243         struct hci_dev *hdev = urb->context;
 244         struct btusb_data *data = hdev->driver_data;
 245         int err;
 246
 247         BT_DBG("%s urb %p status %d count %d", hdev->name,
 248                                         urb, urb->status, urb->actual_length);
 249
 250         if (!test_bit(HCI_RUNNING, &hdev->flags))
 251                 return;
 252
 253         if (urb->status == 0) {
 254                 hdev->stat.byte_rx += urb->actual_length;
 255
 256                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 257                                                 urb->transfer_buffer,
 258                                                 urb->actual_length) < 0) {
 259                         BT_ERR("%s corrupted event packet", hdev->name);
 260                         hdev->stat.err_rx++;
 261                 }
 262         }
 263
 264         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 265                 return;
 266
 267         usb_mark_last_busy(data->udev);
 268         usb_anchor_urb(urb, &data->intr_anchor);
 269
 270         err = usb_submit_urb(urb, GFP_ATOMIC);
 271         if (err < 0) {
 272                 /* -EPERM: urb is being killed;
 273                  * -ENODEV: device got disconnected */
 274                 if (err != -EPERM && err != -ENODEV)
 275                         BT_ERR("%s urb %p failed to resubmit (%d)",
 276                                                 hdev->name, urb, -err);
 277                 usb_unanchor_urb(urb);
 278         }
 279 }
 280
 281 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 282 {
 283         struct btusb_data *data = hdev->driver_data;
 284         struct urb *urb;
 285         unsigned char *buf;
 286         unsigned int pipe;
 287         int err, size;
 288
 289         BT_DBG("%s", hdev->name);
 290
 291         if (!data->intr_ep)
 292                 return -ENODEV;
 293
 294         urb = usb_alloc_urb(0, mem_flags);
 295         if (!urb)
 296                 return -ENOMEM;
 297
 298         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 299
 300         buf = kmalloc(size, mem_flags);
 301         if (!buf) {
 302                 usb_free_urb(urb);
 303                 return -ENOMEM;
 304         }
 305
 306         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 307
 308         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 309                                                 btusb_intr_complete, hdev,
 310                                                 data->intr_ep->bInterval);
 311
 312         urb->transfer_flags |= URB_FREE_BUFFER;
 313
 314         usb_anchor_urb(urb, &data->intr_anchor);
 315
 316         err = usb_submit_urb(urb, mem_flags);
 317         if (err < 0) {
 318                 if (err != -EPERM && err != -ENODEV)
 319                         BT_ERR("%s urb %p submission failed (%d)",
 320                                                 hdev->name, urb, -err);
 321                 usb_unanchor_urb(urb);
 322         }
 323
 324         usb_free_urb(urb);
 325
 326         return err;
 327 }
 328
 329 static void btusb_bulk_complete(struct urb *urb)
 330 {
 331         struct hci_dev *hdev = urb->context;
 332         struct btusb_data *data = hdev->driver_data;
 333         int err;
 334
 335         BT_DBG("%s urb %p status %d count %d", hdev->name,
 336                                         urb, urb->status, urb->actual_length);
 337
 338         if (!test_bit(HCI_RUNNING, &hdev->flags))
 339                 return;
 340
 341         if (urb->status == 0) {
 342                 hdev->stat.byte_rx += urb->actual_length;
 343
 344                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 345                                                 urb->transfer_buffer,
 346                                                 urb->actual_length) < 0) {
 347                         BT_ERR("%s corrupted ACL packet", hdev->name);
 348                         hdev->stat.err_rx++;
 349                 }
 350         }
 351
 352         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 353                 return;
 354
 355         usb_anchor_urb(urb, &data->bulk_anchor);
 356         usb_mark_last_busy(data->udev);
 357
 358         err = usb_submit_urb(urb, GFP_ATOMIC);
 359         if (err < 0) {
 360                 /* -EPERM: urb is being killed;
 361                  * -ENODEV: device got disconnected */
 362                 if (err != -EPERM && err != -ENODEV)
 363                         BT_ERR("%s urb %p failed to resubmit (%d)",
 364                                                 hdev->name, urb, -err);
 365                 usb_unanchor_urb(urb);
 366         }
 367 }
 368
 369 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 370 {
 371         struct btusb_data *data = hdev->driver_data;
 372         struct urb *urb;
 373         unsigned char *buf;
 374         unsigned int pipe;
 375         int err, size = HCI_MAX_FRAME_SIZE;
 376
 377         BT_DBG("%s", hdev->name);
 378
 379         if (!data->bulk_rx_ep)
 380                 return -ENODEV;
 381
 382         urb = usb_alloc_urb(0, mem_flags);
 383         if (!urb)
 384                 return -ENOMEM;
 385
 386         buf = kmalloc(size, mem_flags);
 387         if (!buf) {
 388                 usb_free_urb(urb);
 389                 return -ENOMEM;
 390         }
 391
 392         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 393
 394         usb_fill_bulk_urb(urb, data->udev, pipe,
 395                                         buf, size, btusb_bulk_complete, hdev);
 396
 397         urb->transfer_flags |= URB_FREE_BUFFER;
 398
 399         usb_mark_last_busy(data->udev);
 400         usb_anchor_urb(urb, &data->bulk_anchor);
 401
 402         err = usb_submit_urb(urb, mem_flags);
 403         if (err < 0) {
 404                 if (err != -EPERM && err != -ENODEV)
 405                         BT_ERR("%s urb %p submission failed (%d)",
 406                                                 hdev->name, urb, -err);
 407                 usb_unanchor_urb(urb);
 408         }
 409
 410         usb_free_urb(urb);
 411
 412         return err;
 413 }
 414
 415 static void btusb_isoc_complete(struct urb *urb)
 416 {
 417         struct hci_dev *hdev = urb->context;
 418         struct btusb_data *data = hdev->driver_data;
 419         int i, err;
 420
 421         BT_DBG("%s urb %p status %d count %d", hdev->name,
 422                                         urb, urb->status, urb->actual_length);
 423
 424         if (!test_bit(HCI_RUNNING, &hdev->flags))
 425                 return;
 426
 427         if (urb->status == 0) {
 428                 for (i = 0; i < urb->number_of_packets; i++) {
 429                         unsigned int offset = urb->iso_frame_desc[i].offset;
 430                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 431
 432                         if (urb->iso_frame_desc[i].status)
 433                                 continue;
 434
 435                         hdev->stat.byte_rx += length;
 436
 437                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 438                                                 urb->transfer_buffer + offset,
 439                                                                 length) < 0) {
 440                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 441                                 hdev->stat.err_rx++;
 442                         }
 443                 }
 444         }
 445
 446         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 447                 return;
 448
 449         usb_anchor_urb(urb, &data->isoc_anchor);
 450
 451         err = usb_submit_urb(urb, GFP_ATOMIC);
 452         if (err < 0) {
 453                 /* -EPERM: urb is being killed;
 454                  * -ENODEV: device got disconnected */
 455                 if (err != -EPERM && err != -ENODEV)
 456                         BT_ERR("%s urb %p failed to resubmit (%d)",
 457                                                 hdev->name, urb, -err);
 458                 usb_unanchor_urb(urb);
 459         }
 460 }
 461
 462 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 463 {
 464         int i, offset = 0;
 465
 466         BT_DBG("len %d mtu %d", len, mtu);
 467
 468         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 469                                         i++, offset += mtu, len -= mtu) {
 470                 urb->iso_frame_desc[i].offset = offset;
 471                 urb->iso_frame_desc[i].length = mtu;
 472         }
 473
 474         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 475                 urb->iso_frame_desc[i].offset = offset;
 476                 urb->iso_frame_desc[i].length = len;
 477                 i++;
 478         }
 479
 480         urb->number_of_packets = i;
 481 }
 482
 483 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 484 {
 485         struct btusb_data *data = hdev->driver_data;
 486         struct urb *urb;
 487         unsigned char *buf;
 488         unsigned int pipe;
 489         int err, size;
 490
 491         BT_DBG("%s", hdev->name);
 492
 493         if (!data->isoc_rx_ep)
 494                 return -ENODEV;
 495
 496         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 497         if (!urb)
 498                 return -ENOMEM;
 499
 500         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 501                                                 BTUSB_MAX_ISOC_FRAMES;
 502
 503         buf = kmalloc(size, mem_flags);
 504         if (!buf) {
 505                 usb_free_urb(urb);
 506                 return -ENOMEM;
 507         }
 508
 509         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 510
 511         urb->dev      = data->udev;
 512         urb->pipe     = pipe;
 513         urb->context  = hdev;
 514         urb->complete = btusb_isoc_complete;
 515         urb->interval = data->isoc_rx_ep->bInterval;
 516
 517         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 518         urb->transfer_buffer = buf;
 519         urb->transfer_buffer_length = size;
 520
 521         __fill_isoc_descriptor(urb, size,
 522                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 523
 524         usb_anchor_urb(urb, &data->isoc_anchor);
 525
 526         err = usb_submit_urb(urb, mem_flags);
 527         if (err < 0) {
 528                 if (err != -EPERM && err != -ENODEV)
 529                         BT_ERR("%s urb %p submission failed (%d)",
 530                                                 hdev->name, urb, -err);
 531                 usb_unanchor_urb(urb);
 532         }
 533
 534         usb_free_urb(urb);
 535
 536         return err;
 537 }
 538
 539 static void btusb_tx_complete(struct urb *urb)
 540 {
 541         struct sk_buff *skb = urb->context;
 542         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 543         struct btusb_data *data = hdev->driver_data;
 544
 545         BT_DBG("%s urb %p status %d count %d", hdev->name,
 546                                         urb, urb->status, urb->actual_length);
 547
 548         if (!test_bit(HCI_RUNNING, &hdev->flags))
 549                 goto done;
 550
 551         if (!urb->status)
 552                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 553         else
 554                 hdev->stat.err_tx++;
 555
 556 done:
 557         spin_lock(&data->txlock);
 558         data->tx_in_flight--;
 559         spin_unlock(&data->txlock);
 560
 561         kfree(urb->setup_packet);
 562
 563         kfree_skb(skb);
 564 }
 565
 566 static void btusb_isoc_tx_complete(struct urb *urb)
 567 {
 568         struct sk_buff *skb = urb->context;
 569         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 570
 571         BT_DBG("%s urb %p status %d count %d", hdev->name,
 572                                         urb, urb->status, urb->actual_length);
 573
 574         if (!test_bit(HCI_RUNNING, &hdev->flags))
 575                 goto done;
 576
 577         if (!urb->status)
 578                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 579         else
 580                 hdev->stat.err_tx++;
 581
 582 done:
 583         kfree(urb->setup_packet);
 584
 585         kfree_skb(skb);
 586 }
 587
 588 static int btusb_open(struct hci_dev *hdev)
 589 {
 590         struct btusb_data *data = hdev->driver_data;
 591         int err;
 592
 593         BT_DBG("%s", hdev->name);
 594
 595         err = usb_autopm_get_interface(data->intf);
 596         if (err < 0)
 597                 return err;
 598
 599         data->intf->needs_remote_wakeup = 1;
 600
 601         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 602                 goto done;
 603
 604         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 605                 goto done;
 606
 607         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 608         if (err < 0)
 609                 goto failed;
 610
 611         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 612         if (err < 0) {
 613                 usb_kill_anchored_urbs(&data->intr_anchor);
 614                 goto failed;
 615         }
 616
 617         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 618         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 619
 620 done:
 621         usb_autopm_put_interface(data->intf);
 622         return 0;
 623
 624 failed:
 625         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 626         clear_bit(HCI_RUNNING, &hdev->flags);
 627         usb_autopm_put_interface(data->intf);
 628         return err;
 629 }
 630
 631 static void btusb_stop_traffic(struct btusb_data *data)
 632 {
 633         usb_kill_anchored_urbs(&data->intr_anchor);
 634         usb_kill_anchored_urbs(&data->bulk_anchor);
 635         usb_kill_anchored_urbs(&data->isoc_anchor);
 636 }
 637
 638 static int btusb_close(struct hci_dev *hdev)
 639 {
 640         struct btusb_data *data = hdev->driver_data;
 641         int err;
 642
 643         BT_DBG("%s", hdev->name);
 644
 645         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 646                 return 0;
 647
 648         cancel_work_sync(&data->work);
 649         cancel_work_sync(&data->waker);
 650
 651         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 652         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 653         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 654
 655         btusb_stop_traffic(data);
 656         err = usb_autopm_get_interface(data->intf);
 657         if (err < 0)
 658                 goto failed;
 659
 660         data->intf->needs_remote_wakeup = 0;
 661         usb_autopm_put_interface(data->intf);
 662
 663 failed:
 664         usb_scuttle_anchored_urbs(&data->deferred);
 665         return 0;
 666 }
 667
 668 static int btusb_flush(struct hci_dev *hdev)
 669 {
 670         struct btusb_data *data = hdev->driver_data;
 671
 672         BT_DBG("%s", hdev->name);
 673
 674         usb_kill_anchored_urbs(&data->tx_anchor);
 675
 676         return 0;
 677 }
 678
 679 static int btusb_send_frame(struct sk_buff *skb)
 680 {
 681         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 682         struct btusb_data *data = hdev->driver_data;
 683         struct usb_ctrlrequest *dr;
 684         struct urb *urb;
 685         unsigned int pipe;
 686         int err;
 687
 688         BT_DBG("%s", hdev->name);
 689
 690         if (!test_bit(HCI_RUNNING, &hdev->flags))
 691                 return -EBUSY;
 692
 693         switch (bt_cb(skb)->pkt_type) {
 694         case HCI_COMMAND_PKT:
 695                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 696                 if (!urb)
 697                         return -ENOMEM;
 698
 699                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 700                 if (!dr) {
 701                         usb_free_urb(urb);
 702                         return -ENOMEM;
 703                 }
 704
 705                 dr->bRequestType = data->cmdreq_type;
 706                 dr->bRequest     = 0;
 707                 dr->wIndex       = 0;
 708                 dr->wValue       = 0;
 709                 dr->wLength      = __cpu_to_le16(skb->len);
 710
 711                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 712
 713                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 714                                 skb->data, skb->len, btusb_tx_complete, skb);
 715
 716                 hdev->stat.cmd_tx++;
 717                 break;
 718
 719         case HCI_ACLDATA_PKT:
 720                 if (!data->bulk_tx_ep)
 721                         return -ENODEV;
 722
 723                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 724                 if (!urb)
 725                         return -ENOMEM;
 726
 727                 pipe = usb_sndbulkpipe(data->udev,
 728                                         data->bulk_tx_ep->bEndpointAddress);
 729
 730                 usb_fill_bulk_urb(urb, data->udev, pipe,
 731                                 skb->data, skb->len, btusb_tx_complete, skb);
 732
 733                 if (skb->priority >= HCI_PRIO_MAX - 1)
 734                         urb->transfer_flags  = URB_ISO_ASAP;
 735
 736                 hdev->stat.acl_tx++;
 737                 break;
 738
 739         case HCI_SCODATA_PKT:
 740                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 741                         return -ENODEV;
 742
 743                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 744                 if (!urb)
 745                         return -ENOMEM;
 746
 747                 pipe = usb_sndisocpipe(data->udev,
 748                                         data->isoc_tx_ep->bEndpointAddress);
 749
 750                 usb_fill_int_urb(urb, data->udev, pipe,
 751                                 skb->data, skb->len, btusb_isoc_tx_complete,
 752                                 skb, data->isoc_tx_ep->bInterval);
 753
 754                 urb->transfer_flags  = URB_ISO_ASAP;
 755
 756                 __fill_isoc_descriptor(urb, skb->len,
 757                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 758
 759                 hdev->stat.sco_tx++;
 760                 goto skip_waking;
 761
 762         default:
 763                 return -EILSEQ;
 764         }
 765
 766         err = inc_tx(data);
 767         if (err) {
 768                 usb_anchor_urb(urb, &data->deferred);
 769                 schedule_work(&data->waker);
 770                 err = 0;
 771                 goto done;
 772         }
 773
 774 skip_waking:
 775         usb_anchor_urb(urb, &data->tx_anchor);
 776
 777         err = usb_submit_urb(urb, GFP_ATOMIC);
 778         if (err < 0) {
 779                 if (err != -EPERM && err != -ENODEV)
 780                         BT_ERR("%s urb %p submission failed (%d)",
 781                                                 hdev->name, urb, -err);
 782                 kfree(urb->setup_packet);
 783                 usb_unanchor_urb(urb);
 784         } else {
 785                 usb_mark_last_busy(data->udev);
 786         }
 787
 788 done:
 789         usb_free_urb(urb);
 790         return err;
 791 }
 792
 793 static void btusb_destruct(struct hci_dev *hdev)
 794 {
 795         struct btusb_data *data = hdev->driver_data;
 796
 797         BT_DBG("%s", hdev->name);
 798
 799         kfree(data);
 800 }
 801
 802 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 803 {
 804         struct btusb_data *data = hdev->driver_data;
 805
 806         BT_DBG("%s evt %d", hdev->name, evt);
 807
 808         if (hdev->conn_hash.sco_num != data->sco_num) {
 809                 data->sco_num = hdev->conn_hash.sco_num;
 810                 schedule_work(&data->work);
 811         }
 812 }
 813
 814 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 815 {
 816         struct btusb_data *data = hdev->driver_data;
 817         struct usb_interface *intf = data->isoc;
 818         struct usb_endpoint_descriptor *ep_desc;
 819         int i, err;
 820
 821         if (!data->isoc)
 822                 return -ENODEV;
 823
 824         err = usb_set_interface(data->udev, 1, altsetting);
 825         if (err < 0) {
 826                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 827                 return err;
 828         }
 829
 830         data->isoc_altsetting = altsetting;
 831
 832         data->isoc_tx_ep = NULL;
 833         data->isoc_rx_ep = NULL;
 834
 835         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 836                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 837
 838                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 839                         data->isoc_tx_ep = ep_desc;
 840                         continue;
 841                 }
 842
 843                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 844                         data->isoc_rx_ep = ep_desc;
 845                         continue;
 846                 }
 847         }
 848
 849         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 850                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 851                 return -ENODEV;
 852         }
 853
 854         return 0;
 855 }
 856
 857 static void btusb_work(struct work_struct *work)
 858 {
 859         struct btusb_data *data = container_of(work, struct btusb_data, work);
 860         struct hci_dev *hdev = data->hdev;
 861         int err;
 862
 863         if (hdev->conn_hash.sco_num > 0) {
 864                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 865                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 866                         if (err < 0) {
 867                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 868                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 869                                 return;
 870                         }
 871
 872                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 873                 }
 874                 if (data->isoc_altsetting != 2) {
 875                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 876                         usb_kill_anchored_urbs(&data->isoc_anchor);
 877
 878                         if (__set_isoc_interface(hdev, 2) < 0)
 879                                 return;
 880                 }
 881
 882                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 883                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 884                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 885                         else
 886                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 887                 }
 888         } else {
 889                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 890                 usb_kill_anchored_urbs(&data->isoc_anchor);
 891
 892                 __set_isoc_interface(hdev, 0);
 893                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 894                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 895         }
 896 }
 897
 898 static void btusb_waker(struct work_struct *work)
 899 {
 900         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 901         int err;
 902
 903         err = usb_autopm_get_interface(data->intf);
 904         if (err < 0)
 905                 return;
 906
 907         usb_autopm_put_interface(data->intf);
 908 }
 909
 910 static int btusb_probe(struct usb_interface *intf,
 911                                 const struct usb_device_id *id)
 912 {
 913         struct usb_endpoint_descriptor *ep_desc;
 914         struct btusb_data *data;
 915         struct hci_dev *hdev;
 916         int i, err;
 917
 918         BT_DBG("intf %p id %p", intf, id);
 919
 920         /* interface numbers are hardcoded in the spec */
 921         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 922                 return -ENODEV;
 923
 924         if (!id->driver_info) {
 925                 const struct usb_device_id *match;
 926                 match = usb_match_id(intf, blacklist_table);
 927                 if (match)
 928                         id = match;
 929         }
 930
 931         if (id->driver_info == BTUSB_IGNORE)
 932                 return -ENODEV;
 933
 934         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 935                 return -ENODEV;
 936
 937         if (ignore_csr && id->driver_info & BTUSB_CSR)
 938                 return -ENODEV;
 939
 940         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 941                 return -ENODEV;
 942
 943         if (id->driver_info & BTUSB_ATH3012) {
 944                 struct usb_device *udev = interface_to_usbdev(intf);
 945
 946                 /* Old firmware would otherwise let ath3k driver load
 947                  * patch and sysconfig files */
 948                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 949                         return -ENODEV;
 950         }
 951
 952         data = kzalloc(sizeof(*data), GFP_KERNEL);
 953         if (!data)
 954                 return -ENOMEM;
 955
 956         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 957                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 958
 959                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 960                         data->intr_ep = ep_desc;
 961                         continue;
 962                 }
 963
 964                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 965                         data->bulk_tx_ep = ep_desc;
 966                         continue;
 967                 }
 968
 969                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 970                         data->bulk_rx_ep = ep_desc;
 971                         continue;
 972                 }
 973         }
 974
 975         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 976                 kfree(data);
 977                 return -ENODEV;
 978         }
 979
 980         data->cmdreq_type = USB_TYPE_CLASS;
 981
 982         data->udev = interface_to_usbdev(intf);
 983         data->intf = intf;
 984
 985         spin_lock_init(&data->lock);
 986
 987         INIT_WORK(&data->work, btusb_work);
 988         INIT_WORK(&data->waker, btusb_waker);
 989         spin_lock_init(&data->txlock);
 990
 991         init_usb_anchor(&data->tx_anchor);
 992         init_usb_anchor(&data->intr_anchor);
 993         init_usb_anchor(&data->bulk_anchor);
 994         init_usb_anchor(&data->isoc_anchor);
 995         init_usb_anchor(&data->deferred);
 996
 997         hdev = hci_alloc_dev();
 998         if (!hdev) {
 999                 kfree(data);
1000                 return -ENOMEM;
1001         }
1002
1003         hdev->bus = HCI_USB;
1004         hdev->driver_data = data;
1005
1006         data->hdev = hdev;
1007
1008         SET_HCIDEV_DEV(hdev, &intf->dev);
1009
1010         hdev->open     = btusb_open;
1011         hdev->close    = btusb_close;
1012         hdev->flush    = btusb_flush;
1013         hdev->send     = btusb_send_frame;
1014         hdev->destruct = btusb_destruct;
1015         hdev->notify   = btusb_notify;
1016
1017         hdev->owner = THIS_MODULE;
1018
1019         /* Interface numbers are hardcoded in the specification */
1020         data->isoc = usb_ifnum_to_if(data->udev, 1);
1021
1022         if (!reset)
1023                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1024
1025         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1026                 if (!disable_scofix)
1027                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1028         }
1029
1030         if (id->driver_info & BTUSB_BROKEN_ISOC)
1031                 data->isoc = NULL;
1032
1033         if (id->driver_info & BTUSB_DIGIANSWER) {
1034                 data->cmdreq_type = USB_TYPE_VENDOR;
1035                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1036         }
1037
1038         if (id->driver_info & BTUSB_CSR) {
1039                 struct usb_device *udev = data->udev;
1040
1041                 /* Old firmware would otherwise execute USB reset */
1042                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1043                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1044         }
1045
1046         if (id->driver_info & BTUSB_SNIFFER) {
1047                 struct usb_device *udev = data->udev;
1048
1049                 /* New sniffer firmware has crippled HCI interface */
1050                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1051                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1052
1053                 data->isoc = NULL;
1054         }
1055
1056         if (id->driver_info & BTUSB_BCM92035) {
1057                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1058                 struct sk_buff *skb;
1059
1060                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1061                 if (skb) {
1062                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1063                         skb_queue_tail(&hdev->driver_init, skb);
1064                 }
1065         }
1066
1067         if (data->isoc) {
1068                 err = usb_driver_claim_interface(&btusb_driver,
1069                                                         data->isoc, data);
1070                 if (err < 0) {
1071                         hci_free_dev(hdev);
1072                         kfree(data);
1073                         return err;
1074                 }
1075         }
1076
1077         err = hci_register_dev(hdev);
1078         if (err < 0) {
1079                 hci_free_dev(hdev);
1080                 kfree(data);
1081                 return err;
1082         }
1083
1084         usb_set_intfdata(intf, data);
1085
1086         return 0;
1087 }
1088
1089 static void btusb_disconnect(struct usb_interface *intf)
1090 {
1091         struct btusb_data *data = usb_get_intfdata(intf);
1092         struct hci_dev *hdev;
1093
1094         BT_DBG("intf %p", intf);
1095
1096         if (!data)
1097                 return;
1098
1099         hdev = data->hdev;
1100
1101         __hci_dev_hold(hdev);
1102
1103         usb_set_intfdata(data->intf, NULL);
1104
1105         if (data->isoc)
1106                 usb_set_intfdata(data->isoc, NULL);
1107
1108         hci_unregister_dev(hdev);
1109
1110         if (intf == data->isoc)
1111                 usb_driver_release_interface(&btusb_driver, data->intf);
1112         else if (data->isoc)
1113                 usb_driver_release_interface(&btusb_driver, data->isoc);
1114
1115         __hci_dev_put(hdev);
1116
1117         hci_free_dev(hdev);
1118 }
1119
1120 #ifdef CONFIG_PM
1121 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1122 {
1123         struct btusb_data *data = usb_get_intfdata(intf);
1124
1125         BT_DBG("intf %p", intf);
1126
1127         if (data->suspend_count++)
1128                 return 0;
1129
1130         spin_lock_irq(&data->txlock);
1131         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1132                 set_bit(BTUSB_SUSPENDING, &data->flags);
1133                 spin_unlock_irq(&data->txlock);
1134         } else {
1135                 spin_unlock_irq(&data->txlock);
1136                 data->suspend_count--;
1137                 return -EBUSY;
1138         }
1139
1140         cancel_work_sync(&data->work);
1141
1142         btusb_stop_traffic(data);
1143         usb_kill_anchored_urbs(&data->tx_anchor);
1144
1145         return 0;
1146 }
1147
1148 static void play_deferred(struct btusb_data *data)
1149 {
1150         struct urb *urb;
1151         int err;
1152
1153         while ((urb = usb_get_from_anchor(&data->deferred))) {
1154                 err = usb_submit_urb(urb, GFP_ATOMIC);
1155                 if (err < 0)
1156                         break;
1157
1158                 data->tx_in_flight++;
1159         }
1160         usb_scuttle_anchored_urbs(&data->deferred);
1161 }
1162
1163 static int btusb_resume(struct usb_interface *intf)
1164 {
1165         struct btusb_data *data = usb_get_intfdata(intf);
1166         struct hci_dev *hdev = data->hdev;
1167         int err = 0;
1168
1169         BT_DBG("intf %p", intf);
1170
1171         if (--data->suspend_count)
1172                 return 0;
1173
1174         if (!test_bit(HCI_RUNNING, &hdev->flags))
1175                 goto done;
1176
1177         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1178                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1179                 if (err < 0) {
1180                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1181                         goto failed;
1182                 }
1183         }
1184
1185         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1186                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1187                 if (err < 0) {
1188                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1189                         goto failed;
1190                 }
1191
1192                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1193         }
1194
1195         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1196                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1197                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1198                 else
1199                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1200         }
1201
1202         spin_lock_irq(&data->txlock);
1203         play_deferred(data);
1204         clear_bit(BTUSB_SUSPENDING, &data->flags);
1205         spin_unlock_irq(&data->txlock);
1206         schedule_work(&data->work);
1207
1208         return 0;
1209
1210 failed:
1211         usb_scuttle_anchored_urbs(&data->deferred);
1212 done:
1213         spin_lock_irq(&data->txlock);
1214         clear_bit(BTUSB_SUSPENDING, &data->flags);
1215         spin_unlock_irq(&data->txlock);
1216
1217         return err;
1218 }
1219 #endif
1220
1221 static struct usb_driver btusb_driver = {
1222         .name           = "btusb",
1223         .probe          = btusb_probe,
1224         .disconnect     = btusb_disconnect,
1225 #ifdef CONFIG_PM
1226         .suspend        = btusb_suspend,
1227         .resume         = btusb_resume,
1228 #endif
1229         .id_table       = btusb_table,
1230         .supports_autosuspend = 1,
1231 };
1232
1233 static int __init btusb_init(void)
1234 {
1235         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1236
1237         return usb_register(&btusb_driver);
1238 }
1239
1240 static void __exit btusb_exit(void)
1241 {
1242         usb_deregister(&btusb_driver);
1243 }
1244
1245 module_init(btusb_init);
1246 module_exit(btusb_exit);
1247
1248 module_param(ignore_dga, bool, 0644);
1249 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1250
1251 module_param(ignore_csr, bool, 0644);
1252 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1253
1254 module_param(ignore_sniffer, bool, 0644);
1255 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1256
1257 module_param(disable_scofix, bool, 0644);
1258 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1259
1260 module_param(force_scofix, bool, 0644);
1261 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1262
1263 module_param(reset, bool, 0644);
1264 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1265
1266 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1267 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1268 MODULE_VERSION(VERSION);
1269 MODULE_LICENSE("GPL");