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(0x0a5c, 0x21e3) },
 105         { USB_DEVICE(0x0a5c, 0x21e6) },
 106         { USB_DEVICE(0x0a5c, 0x21e8) },
 107         { USB_DEVICE(0x0a5c, 0x21f3) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         { }     /* Terminating entry */
 111 };
 112
 113 MODULE_DEVICE_TABLE(usb, btusb_table);
 114
 115 static struct usb_device_id blacklist_table[] = {
 116         /* CSR BlueCore devices */
 117         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 118
 119         /* Broadcom BCM2033 without firmware */
 120         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 121
 122         /* Atheros 3011 with sflash firmware */
 123         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 126         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros AR9285 Malbec with sflash firmware */
 129         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 130
 131         /* Atheros 3012 with sflash firmware */
 132         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 136
 137         /* Atheros AR5BBU12 with sflash firmware */
 138         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 139
 140         /* Broadcom BCM2035 */
 141         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 142         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 144
 145         /* Broadcom BCM2045 */
 146         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 147         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 148
 149         /* IBM/Lenovo ThinkPad with Broadcom chip */
 150         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 151         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* HP laptop with Broadcom chip */
 154         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* Dell laptop with Broadcom chip */
 157         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* Dell Wireless 370 and 410 devices */
 160         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 161         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* Belkin F8T012 and F8T013 devices */
 164         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 165         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 166
 167         /* Asus WL-BTD202 device */
 168         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170         /* Kensington Bluetooth USB adapter */
 171         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 172
 173         /* RTX Telecom based adapters with buggy SCO support */
 174         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 175         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 176
 177         /* CONWISE Technology based adapters with buggy SCO support */
 178         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 179
 180         /* Digianswer devices */
 181         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 182         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 183
 184         /* CSR BlueCore Bluetooth Sniffer */
 185         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 186
 187         /* Frontline ComProbe Bluetooth Sniffer */
 188         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 189
 190         { }     /* Terminating entry */
 191 };
 192
 193 #define BTUSB_MAX_ISOC_FRAMES   10
 194
 195 #define BTUSB_INTR_RUNNING      0
 196 #define BTUSB_BULK_RUNNING      1
 197 #define BTUSB_ISOC_RUNNING      2
 198 #define BTUSB_SUSPENDING        3
 199 #define BTUSB_DID_ISO_RESUME    4
 200
 201 struct btusb_data {
 202         struct hci_dev       *hdev;
 203         struct usb_device    *udev;
 204         struct usb_interface *intf;
 205         struct usb_interface *isoc;
 206
 207         spinlock_t lock;
 208
 209         unsigned long flags;
 210
 211         struct work_struct work;
 212         struct work_struct waker;
 213
 214         struct usb_anchor tx_anchor;
 215         struct usb_anchor intr_anchor;
 216         struct usb_anchor bulk_anchor;
 217         struct usb_anchor isoc_anchor;
 218         struct usb_anchor deferred;
 219         int tx_in_flight;
 220         spinlock_t txlock;
 221
 222         struct usb_endpoint_descriptor *intr_ep;
 223         struct usb_endpoint_descriptor *bulk_tx_ep;
 224         struct usb_endpoint_descriptor *bulk_rx_ep;
 225         struct usb_endpoint_descriptor *isoc_tx_ep;
 226         struct usb_endpoint_descriptor *isoc_rx_ep;
 227
 228         __u8 cmdreq_type;
 229
 230         unsigned int sco_num;
 231         int isoc_altsetting;
 232         int suspend_count;
 233 };
 234
 235 static int inc_tx(struct btusb_data *data)
 236 {
 237         unsigned long flags;
 238         int rv;
 239
 240         spin_lock_irqsave(&data->txlock, flags);
 241         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 242         if (!rv)
 243                 data->tx_in_flight++;
 244         spin_unlock_irqrestore(&data->txlock, flags);
 245
 246         return rv;
 247 }
 248
 249 static void btusb_intr_complete(struct urb *urb)
 250 {
 251         struct hci_dev *hdev = urb->context;
 252         struct btusb_data *data = hdev->driver_data;
 253         int err;
 254
 255         BT_DBG("%s urb %p status %d count %d", hdev->name,
 256                                         urb, urb->status, urb->actual_length);
 257
 258         if (!test_bit(HCI_RUNNING, &hdev->flags))
 259                 return;
 260
 261         if (urb->status == 0) {
 262                 hdev->stat.byte_rx += urb->actual_length;
 263
 264                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 265                                                 urb->transfer_buffer,
 266                                                 urb->actual_length) < 0) {
 267                         BT_ERR("%s corrupted event packet", hdev->name);
 268                         hdev->stat.err_rx++;
 269                 }
 270         }
 271
 272         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 273                 return;
 274
 275         usb_mark_last_busy(data->udev);
 276         usb_anchor_urb(urb, &data->intr_anchor);
 277
 278         err = usb_submit_urb(urb, GFP_ATOMIC);
 279         if (err < 0) {
 280                 /* -EPERM: urb is being killed;
 281                  * -ENODEV: device got disconnected */
 282                 if (err != -EPERM && err != -ENODEV)
 283                         BT_ERR("%s urb %p failed to resubmit (%d)",
 284                                                 hdev->name, urb, -err);
 285                 usb_unanchor_urb(urb);
 286         }
 287 }
 288
 289 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 290 {
 291         struct btusb_data *data = hdev->driver_data;
 292         struct urb *urb;
 293         unsigned char *buf;
 294         unsigned int pipe;
 295         int err, size;
 296
 297         BT_DBG("%s", hdev->name);
 298
 299         if (!data->intr_ep)
 300                 return -ENODEV;
 301
 302         urb = usb_alloc_urb(0, mem_flags);
 303         if (!urb)
 304                 return -ENOMEM;
 305
 306         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 307
 308         buf = kmalloc(size, mem_flags);
 309         if (!buf) {
 310                 usb_free_urb(urb);
 311                 return -ENOMEM;
 312         }
 313
 314         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 315
 316         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 317                                                 btusb_intr_complete, hdev,
 318                                                 data->intr_ep->bInterval);
 319
 320         urb->transfer_flags |= URB_FREE_BUFFER;
 321
 322         usb_anchor_urb(urb, &data->intr_anchor);
 323
 324         err = usb_submit_urb(urb, mem_flags);
 325         if (err < 0) {
 326                 BT_ERR("%s urb %p submission failed (%d)",
 327                                                 hdev->name, urb, -err);
 328                 usb_unanchor_urb(urb);
 329         }
 330
 331         usb_free_urb(urb);
 332
 333         return err;
 334 }
 335
 336 static void btusb_bulk_complete(struct urb *urb)
 337 {
 338         struct hci_dev *hdev = urb->context;
 339         struct btusb_data *data = hdev->driver_data;
 340         int err;
 341
 342         BT_DBG("%s urb %p status %d count %d", hdev->name,
 343                                         urb, urb->status, urb->actual_length);
 344
 345         if (!test_bit(HCI_RUNNING, &hdev->flags))
 346                 return;
 347
 348         if (urb->status == 0) {
 349                 hdev->stat.byte_rx += urb->actual_length;
 350
 351                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 352                                                 urb->transfer_buffer,
 353                                                 urb->actual_length) < 0) {
 354                         BT_ERR("%s corrupted ACL packet", hdev->name);
 355                         hdev->stat.err_rx++;
 356                 }
 357         }
 358
 359         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 360                 return;
 361
 362         usb_anchor_urb(urb, &data->bulk_anchor);
 363         usb_mark_last_busy(data->udev);
 364
 365         err = usb_submit_urb(urb, GFP_ATOMIC);
 366         if (err < 0) {
 367                 /* -EPERM: urb is being killed;
 368                  * -ENODEV: device got disconnected */
 369                 if (err != -EPERM && err != -ENODEV)
 370                         BT_ERR("%s urb %p failed to resubmit (%d)",
 371                                                 hdev->name, urb, -err);
 372                 usb_unanchor_urb(urb);
 373         }
 374 }
 375
 376 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 377 {
 378         struct btusb_data *data = hdev->driver_data;
 379         struct urb *urb;
 380         unsigned char *buf;
 381         unsigned int pipe;
 382         int err, size = HCI_MAX_FRAME_SIZE;
 383
 384         BT_DBG("%s", hdev->name);
 385
 386         if (!data->bulk_rx_ep)
 387                 return -ENODEV;
 388
 389         urb = usb_alloc_urb(0, mem_flags);
 390         if (!urb)
 391                 return -ENOMEM;
 392
 393         buf = kmalloc(size, mem_flags);
 394         if (!buf) {
 395                 usb_free_urb(urb);
 396                 return -ENOMEM;
 397         }
 398
 399         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 400
 401         usb_fill_bulk_urb(urb, data->udev, pipe,
 402                                         buf, size, btusb_bulk_complete, hdev);
 403
 404         urb->transfer_flags |= URB_FREE_BUFFER;
 405
 406         usb_mark_last_busy(data->udev);
 407         usb_anchor_urb(urb, &data->bulk_anchor);
 408
 409         err = usb_submit_urb(urb, mem_flags);
 410         if (err < 0) {
 411                 BT_ERR("%s urb %p submission failed (%d)",
 412                                                 hdev->name, urb, -err);
 413                 usb_unanchor_urb(urb);
 414         }
 415
 416         usb_free_urb(urb);
 417
 418         return err;
 419 }
 420
 421 static void btusb_isoc_complete(struct urb *urb)
 422 {
 423         struct hci_dev *hdev = urb->context;
 424         struct btusb_data *data = hdev->driver_data;
 425         int i, err;
 426
 427         BT_DBG("%s urb %p status %d count %d", hdev->name,
 428                                         urb, urb->status, urb->actual_length);
 429
 430         if (!test_bit(HCI_RUNNING, &hdev->flags))
 431                 return;
 432
 433         if (urb->status == 0) {
 434                 for (i = 0; i < urb->number_of_packets; i++) {
 435                         unsigned int offset = urb->iso_frame_desc[i].offset;
 436                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 437
 438                         if (urb->iso_frame_desc[i].status)
 439                                 continue;
 440
 441                         hdev->stat.byte_rx += length;
 442
 443                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 444                                                 urb->transfer_buffer + offset,
 445                                                                 length) < 0) {
 446                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 447                                 hdev->stat.err_rx++;
 448                         }
 449                 }
 450         }
 451
 452         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 453                 return;
 454
 455         usb_anchor_urb(urb, &data->isoc_anchor);
 456
 457         err = usb_submit_urb(urb, GFP_ATOMIC);
 458         if (err < 0) {
 459                 /* -EPERM: urb is being killed;
 460                  * -ENODEV: device got disconnected */
 461                 if (err != -EPERM && err != -ENODEV)
 462                         BT_ERR("%s urb %p failed to resubmit (%d)",
 463                                                 hdev->name, urb, -err);
 464                 usb_unanchor_urb(urb);
 465         }
 466 }
 467
 468 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 469 {
 470         int i, offset = 0;
 471
 472         BT_DBG("len %d mtu %d", len, mtu);
 473
 474         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 475                                         i++, offset += mtu, len -= mtu) {
 476                 urb->iso_frame_desc[i].offset = offset;
 477                 urb->iso_frame_desc[i].length = mtu;
 478         }
 479
 480         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 481                 urb->iso_frame_desc[i].offset = offset;
 482                 urb->iso_frame_desc[i].length = len;
 483                 i++;
 484         }
 485
 486         urb->number_of_packets = i;
 487 }
 488
 489 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 490 {
 491         struct btusb_data *data = hdev->driver_data;
 492         struct urb *urb;
 493         unsigned char *buf;
 494         unsigned int pipe;
 495         int err, size;
 496
 497         BT_DBG("%s", hdev->name);
 498
 499         if (!data->isoc_rx_ep)
 500                 return -ENODEV;
 501
 502         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 503         if (!urb)
 504                 return -ENOMEM;
 505
 506         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 507                                                 BTUSB_MAX_ISOC_FRAMES;
 508
 509         buf = kmalloc(size, mem_flags);
 510         if (!buf) {
 511                 usb_free_urb(urb);
 512                 return -ENOMEM;
 513         }
 514
 515         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 516
 517         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 518                                 hdev, data->isoc_rx_ep->bInterval);
 519
 520         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 521
 522         __fill_isoc_descriptor(urb, size,
 523                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 524
 525         usb_anchor_urb(urb, &data->isoc_anchor);
 526
 527         err = usb_submit_urb(urb, mem_flags);
 528         if (err < 0) {
 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                 hdev->stat.acl_tx++;
 734                 break;
 735
 736         case HCI_SCODATA_PKT:
 737                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 738                         return -ENODEV;
 739
 740                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 741                 if (!urb)
 742                         return -ENOMEM;
 743
 744                 pipe = usb_sndisocpipe(data->udev,
 745                                         data->isoc_tx_ep->bEndpointAddress);
 746
 747                 usb_fill_int_urb(urb, data->udev, pipe,
 748                                 skb->data, skb->len, btusb_isoc_tx_complete,
 749                                 skb, data->isoc_tx_ep->bInterval);
 750
 751                 urb->transfer_flags  = URB_ISO_ASAP;
 752
 753                 __fill_isoc_descriptor(urb, skb->len,
 754                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 755
 756                 hdev->stat.sco_tx++;
 757                 goto skip_waking;
 758
 759         default:
 760                 return -EILSEQ;
 761         }
 762
 763         err = inc_tx(data);
 764         if (err) {
 765                 usb_anchor_urb(urb, &data->deferred);
 766                 schedule_work(&data->waker);
 767                 err = 0;
 768                 goto done;
 769         }
 770
 771 skip_waking:
 772         usb_anchor_urb(urb, &data->tx_anchor);
 773
 774         err = usb_submit_urb(urb, GFP_ATOMIC);
 775         if (err < 0) {
 776                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 777                 kfree(urb->setup_packet);
 778                 usb_unanchor_urb(urb);
 779         } else {
 780                 usb_mark_last_busy(data->udev);
 781         }
 782
 783 done:
 784         usb_free_urb(urb);
 785         return err;
 786 }
 787
 788 static void btusb_destruct(struct hci_dev *hdev)
 789 {
 790         struct btusb_data *data = hdev->driver_data;
 791
 792         BT_DBG("%s", hdev->name);
 793
 794         kfree(data);
 795 }
 796
 797 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 798 {
 799         struct btusb_data *data = hdev->driver_data;
 800
 801         BT_DBG("%s evt %d", hdev->name, evt);
 802
 803         if (hdev->conn_hash.sco_num != data->sco_num) {
 804                 data->sco_num = hdev->conn_hash.sco_num;
 805                 schedule_work(&data->work);
 806         }
 807 }
 808
 809 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 810 {
 811         struct btusb_data *data = hdev->driver_data;
 812         struct usb_interface *intf = data->isoc;
 813         struct usb_endpoint_descriptor *ep_desc;
 814         int i, err;
 815
 816         if (!data->isoc)
 817                 return -ENODEV;
 818
 819         err = usb_set_interface(data->udev, 1, altsetting);
 820         if (err < 0) {
 821                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 822                 return err;
 823         }
 824
 825         data->isoc_altsetting = altsetting;
 826
 827         data->isoc_tx_ep = NULL;
 828         data->isoc_rx_ep = NULL;
 829
 830         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 831                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 832
 833                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 834                         data->isoc_tx_ep = ep_desc;
 835                         continue;
 836                 }
 837
 838                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 839                         data->isoc_rx_ep = ep_desc;
 840                         continue;
 841                 }
 842         }
 843
 844         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 845                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 846                 return -ENODEV;
 847         }
 848
 849         return 0;
 850 }
 851
 852 static void btusb_work(struct work_struct *work)
 853 {
 854         struct btusb_data *data = container_of(work, struct btusb_data, work);
 855         struct hci_dev *hdev = data->hdev;
 856         int err;
 857
 858         if (hdev->conn_hash.sco_num > 0) {
 859                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 860                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 861                         if (err < 0) {
 862                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 863                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 864                                 return;
 865                         }
 866
 867                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 868                 }
 869                 if (data->isoc_altsetting != 2) {
 870                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 871                         usb_kill_anchored_urbs(&data->isoc_anchor);
 872
 873                         if (__set_isoc_interface(hdev, 2) < 0)
 874                                 return;
 875                 }
 876
 877                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 878                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 879                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 880                         else
 881                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 882                 }
 883         } else {
 884                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 885                 usb_kill_anchored_urbs(&data->isoc_anchor);
 886
 887                 __set_isoc_interface(hdev, 0);
 888                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 889                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 890         }
 891 }
 892
 893 static void btusb_waker(struct work_struct *work)
 894 {
 895         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 896         int err;
 897
 898         err = usb_autopm_get_interface(data->intf);
 899         if (err < 0)
 900                 return;
 901
 902         usb_autopm_put_interface(data->intf);
 903 }
 904
 905 static int btusb_probe(struct usb_interface *intf,
 906                                 const struct usb_device_id *id)
 907 {
 908         struct usb_endpoint_descriptor *ep_desc;
 909         struct btusb_data *data;
 910         struct hci_dev *hdev;
 911         int i, err;
 912
 913         BT_DBG("intf %p id %p", intf, id);
 914
 915         /* interface numbers are hardcoded in the spec */
 916         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 917                 return -ENODEV;
 918
 919         if (!id->driver_info) {
 920                 const struct usb_device_id *match;
 921                 match = usb_match_id(intf, blacklist_table);
 922                 if (match)
 923                         id = match;
 924         }
 925
 926         if (id->driver_info == BTUSB_IGNORE)
 927                 return -ENODEV;
 928
 929         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 930                 return -ENODEV;
 931
 932         if (ignore_csr && id->driver_info & BTUSB_CSR)
 933                 return -ENODEV;
 934
 935         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 936                 return -ENODEV;
 937
 938         if (id->driver_info & BTUSB_ATH3012) {
 939                 struct usb_device *udev = interface_to_usbdev(intf);
 940
 941                 /* Old firmware would otherwise let ath3k driver load
 942                  * patch and sysconfig files */
 943                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 944                         return -ENODEV;
 945         }
 946
 947         data = kzalloc(sizeof(*data), GFP_KERNEL);
 948         if (!data)
 949                 return -ENOMEM;
 950
 951         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 952                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 953
 954                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 955                         data->intr_ep = ep_desc;
 956                         continue;
 957                 }
 958
 959                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 960                         data->bulk_tx_ep = ep_desc;
 961                         continue;
 962                 }
 963
 964                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 965                         data->bulk_rx_ep = ep_desc;
 966                         continue;
 967                 }
 968         }
 969
 970         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 971                 kfree(data);
 972                 return -ENODEV;
 973         }
 974
 975         data->cmdreq_type = USB_TYPE_CLASS;
 976
 977         data->udev = interface_to_usbdev(intf);
 978         data->intf = intf;
 979
 980         spin_lock_init(&data->lock);
 981
 982         INIT_WORK(&data->work, btusb_work);
 983         INIT_WORK(&data->waker, btusb_waker);
 984         spin_lock_init(&data->txlock);
 985
 986         init_usb_anchor(&data->tx_anchor);
 987         init_usb_anchor(&data->intr_anchor);
 988         init_usb_anchor(&data->bulk_anchor);
 989         init_usb_anchor(&data->isoc_anchor);
 990         init_usb_anchor(&data->deferred);
 991
 992         hdev = hci_alloc_dev();
 993         if (!hdev) {
 994                 kfree(data);
 995                 return -ENOMEM;
 996         }
 997
 998         hdev->bus = HCI_USB;
 999         hdev->driver_data = data;
1000
1001         data->hdev = hdev;
1002
1003         SET_HCIDEV_DEV(hdev, &intf->dev);
1004
1005         hdev->open     = btusb_open;
1006         hdev->close    = btusb_close;
1007         hdev->flush    = btusb_flush;
1008         hdev->send     = btusb_send_frame;
1009         hdev->destruct = btusb_destruct;
1010         hdev->notify   = btusb_notify;
1011
1012         hdev->owner = THIS_MODULE;
1013
1014         /* Interface numbers are hardcoded in the specification */
1015         data->isoc = usb_ifnum_to_if(data->udev, 1);
1016
1017         if (!reset)
1018                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1019
1020         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1021                 if (!disable_scofix)
1022                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1023         }
1024
1025         if (id->driver_info & BTUSB_BROKEN_ISOC)
1026                 data->isoc = NULL;
1027
1028         if (id->driver_info & BTUSB_DIGIANSWER) {
1029                 data->cmdreq_type = USB_TYPE_VENDOR;
1030                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1031         }
1032
1033         if (id->driver_info & BTUSB_CSR) {
1034                 struct usb_device *udev = data->udev;
1035
1036                 /* Old firmware would otherwise execute USB reset */
1037                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1038                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1039         }
1040
1041         if (id->driver_info & BTUSB_SNIFFER) {
1042                 struct usb_device *udev = data->udev;
1043
1044                 /* New sniffer firmware has crippled HCI interface */
1045                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1046                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1047
1048                 data->isoc = NULL;
1049         }
1050
1051         if (id->driver_info & BTUSB_BCM92035) {
1052                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1053                 struct sk_buff *skb;
1054
1055                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1056                 if (skb) {
1057                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1058                         skb_queue_tail(&hdev->driver_init, skb);
1059                 }
1060         }
1061
1062         if (data->isoc) {
1063                 err = usb_driver_claim_interface(&btusb_driver,
1064                                                         data->isoc, data);
1065                 if (err < 0) {
1066                         hci_free_dev(hdev);
1067                         kfree(data);
1068                         return err;
1069                 }
1070         }
1071
1072         err = hci_register_dev(hdev);
1073         if (err < 0) {
1074                 hci_free_dev(hdev);
1075                 kfree(data);
1076                 return err;
1077         }
1078
1079         usb_set_intfdata(intf, data);
1080
1081         return 0;
1082 }
1083
1084 static void btusb_disconnect(struct usb_interface *intf)
1085 {
1086         struct btusb_data *data = usb_get_intfdata(intf);
1087         struct hci_dev *hdev;
1088
1089         BT_DBG("intf %p", intf);
1090
1091         if (!data)
1092                 return;
1093
1094         hdev = data->hdev;
1095
1096         __hci_dev_hold(hdev);
1097
1098         usb_set_intfdata(data->intf, NULL);
1099
1100         if (data->isoc)
1101                 usb_set_intfdata(data->isoc, NULL);
1102
1103         hci_unregister_dev(hdev);
1104
1105         if (intf == data->isoc)
1106                 usb_driver_release_interface(&btusb_driver, data->intf);
1107         else if (data->isoc)
1108                 usb_driver_release_interface(&btusb_driver, data->isoc);
1109
1110         __hci_dev_put(hdev);
1111
1112         hci_free_dev(hdev);
1113 }
1114
1115 #ifdef CONFIG_PM
1116 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1117 {
1118         struct btusb_data *data = usb_get_intfdata(intf);
1119
1120         BT_DBG("intf %p", intf);
1121
1122         if (data->suspend_count++)
1123                 return 0;
1124
1125         spin_lock_irq(&data->txlock);
1126         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1127                 set_bit(BTUSB_SUSPENDING, &data->flags);
1128                 spin_unlock_irq(&data->txlock);
1129         } else {
1130                 spin_unlock_irq(&data->txlock);
1131                 data->suspend_count--;
1132                 return -EBUSY;
1133         }
1134
1135         cancel_work_sync(&data->work);
1136
1137         btusb_stop_traffic(data);
1138         usb_kill_anchored_urbs(&data->tx_anchor);
1139
1140         return 0;
1141 }
1142
1143 static void play_deferred(struct btusb_data *data)
1144 {
1145         struct urb *urb;
1146         int err;
1147
1148         while ((urb = usb_get_from_anchor(&data->deferred))) {
1149                 err = usb_submit_urb(urb, GFP_ATOMIC);
1150                 if (err < 0)
1151                         break;
1152
1153                 data->tx_in_flight++;
1154         }
1155         usb_scuttle_anchored_urbs(&data->deferred);
1156 }
1157
1158 static int btusb_resume(struct usb_interface *intf)
1159 {
1160         struct btusb_data *data = usb_get_intfdata(intf);
1161         struct hci_dev *hdev = data->hdev;
1162         int err = 0;
1163
1164         BT_DBG("intf %p", intf);
1165
1166         if (--data->suspend_count)
1167                 return 0;
1168
1169         if (!test_bit(HCI_RUNNING, &hdev->flags))
1170                 goto done;
1171
1172         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1173                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1174                 if (err < 0) {
1175                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1176                         goto failed;
1177                 }
1178         }
1179
1180         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1181                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1182                 if (err < 0) {
1183                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1184                         goto failed;
1185                 }
1186
1187                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1188         }
1189
1190         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1191                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1192                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1193                 else
1194                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1195         }
1196
1197         spin_lock_irq(&data->txlock);
1198         play_deferred(data);
1199         clear_bit(BTUSB_SUSPENDING, &data->flags);
1200         spin_unlock_irq(&data->txlock);
1201         schedule_work(&data->work);
1202
1203         return 0;
1204
1205 failed:
1206         usb_scuttle_anchored_urbs(&data->deferred);
1207 done:
1208         spin_lock_irq(&data->txlock);
1209         clear_bit(BTUSB_SUSPENDING, &data->flags);
1210         spin_unlock_irq(&data->txlock);
1211
1212         return err;
1213 }
1214 #endif
1215
1216 static struct usb_driver btusb_driver = {
1217         .name           = "btusb",
1218         .probe          = btusb_probe,
1219         .disconnect     = btusb_disconnect,
1220 #ifdef CONFIG_PM
1221         .suspend        = btusb_suspend,
1222         .resume         = btusb_resume,
1223 #endif
1224         .id_table       = btusb_table,
1225         .supports_autosuspend = 1,
1226 };
1227
1228 static int __init btusb_init(void)
1229 {
1230         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1231
1232         return usb_register(&btusb_driver);
1233 }
1234
1235 static void __exit btusb_exit(void)
1236 {
1237         usb_deregister(&btusb_driver);
1238 }
1239
1240 module_init(btusb_init);
1241 module_exit(btusb_exit);
1242
1243 module_param(ignore_dga, bool, 0644);
1244 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1245
1246 module_param(ignore_csr, bool, 0644);
1247 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1248
1249 module_param(ignore_sniffer, bool, 0644);
1250 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1251
1252 module_param(disable_scofix, bool, 0644);
1253 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1254
1255 module_param(force_scofix, bool, 0644);
1256 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1257
1258 module_param(reset, bool, 0644);
1259 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1260
1261 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1262 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1263 MODULE_VERSION(VERSION);
1264 MODULE_LICENSE("GPL");