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 bool ignore_dga;
  41 static bool ignore_csr;
  42 static bool ignore_sniffer;
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45
  46 static bool 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, 0x21f3) },
 107         { USB_DEVICE(0x413c, 0x8197) },
 108
 109         { }     /* Terminating entry */
 110 };
 111
 112 MODULE_DEVICE_TABLE(usb, btusb_table);
 113
 114 static struct usb_device_id blacklist_table[] = {
 115         /* CSR BlueCore devices */
 116         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 117
 118         /* Broadcom BCM2033 without firmware */
 119         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 120
 121         /* Atheros 3011 with sflash firmware */
 122         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 123         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 126
 127         /* Atheros AR9285 Malbec with sflash firmware */
 128         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 129
 130         /* Atheros 3012 with sflash firmware */
 131         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 132
 133         /* Atheros AR5BBU12 with sflash firmware */
 134         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 135
 136         /* Broadcom BCM2035 */
 137         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 138         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 139         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 140
 141         /* Broadcom BCM2045 */
 142         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 144
 145         /* IBM/Lenovo ThinkPad with Broadcom chip */
 146         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 147         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 148
 149         /* HP laptop with Broadcom chip */
 150         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 151
 152         /* Dell laptop with Broadcom chip */
 153         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 154
 155         /* Dell Wireless 370 and 410 devices */
 156         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 157         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* Belkin F8T012 and F8T013 devices */
 160         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 161         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* Asus WL-BTD202 device */
 164         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166         /* Kensington Bluetooth USB adapter */
 167         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 168
 169         /* RTX Telecom based adapters with buggy SCO support */
 170         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 171         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 172
 173         /* CONWISE Technology based adapters with buggy SCO support */
 174         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 175
 176         /* Digianswer devices */
 177         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 178         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 179
 180         /* CSR BlueCore Bluetooth Sniffer */
 181         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 182
 183         /* Frontline ComProbe Bluetooth Sniffer */
 184         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 185
 186         { }     /* Terminating entry */
 187 };
 188
 189 #define BTUSB_MAX_ISOC_FRAMES   10
 190
 191 #define BTUSB_INTR_RUNNING      0
 192 #define BTUSB_BULK_RUNNING      1
 193 #define BTUSB_ISOC_RUNNING      2
 194 #define BTUSB_SUSPENDING        3
 195 #define BTUSB_DID_ISO_RESUME    4
 196
 197 struct btusb_data {
 198         struct hci_dev       *hdev;
 199         struct usb_device    *udev;
 200         struct usb_interface *intf;
 201         struct usb_interface *isoc;
 202
 203         spinlock_t lock;
 204
 205         unsigned long flags;
 206
 207         struct work_struct work;
 208         struct work_struct waker;
 209
 210         struct usb_anchor tx_anchor;
 211         struct usb_anchor intr_anchor;
 212         struct usb_anchor bulk_anchor;
 213         struct usb_anchor isoc_anchor;
 214         struct usb_anchor deferred;
 215         int tx_in_flight;
 216         spinlock_t txlock;
 217
 218         struct usb_endpoint_descriptor *intr_ep;
 219         struct usb_endpoint_descriptor *bulk_tx_ep;
 220         struct usb_endpoint_descriptor *bulk_rx_ep;
 221         struct usb_endpoint_descriptor *isoc_tx_ep;
 222         struct usb_endpoint_descriptor *isoc_rx_ep;
 223
 224         __u8 cmdreq_type;
 225
 226         unsigned int sco_num;
 227         int isoc_altsetting;
 228         int suspend_count;
 229 };
 230
 231 static int inc_tx(struct btusb_data *data)
 232 {
 233         unsigned long flags;
 234         int rv;
 235
 236         spin_lock_irqsave(&data->txlock, flags);
 237         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 238         if (!rv)
 239                 data->tx_in_flight++;
 240         spin_unlock_irqrestore(&data->txlock, flags);
 241
 242         return rv;
 243 }
 244
 245 static void btusb_intr_complete(struct urb *urb)
 246 {
 247         struct hci_dev *hdev = urb->context;
 248         struct btusb_data *data = hci_get_drvdata(hdev);
 249         int err;
 250
 251         BT_DBG("%s urb %p status %d count %d", hdev->name,
 252                                         urb, urb->status, urb->actual_length);
 253
 254         if (!test_bit(HCI_RUNNING, &hdev->flags))
 255                 return;
 256
 257         if (urb->status == 0) {
 258                 hdev->stat.byte_rx += urb->actual_length;
 259
 260                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 261                                                 urb->transfer_buffer,
 262                                                 urb->actual_length) < 0) {
 263                         BT_ERR("%s corrupted event packet", hdev->name);
 264                         hdev->stat.err_rx++;
 265                 }
 266         }
 267
 268         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 269                 return;
 270
 271         usb_mark_last_busy(data->udev);
 272         usb_anchor_urb(urb, &data->intr_anchor);
 273
 274         err = usb_submit_urb(urb, GFP_ATOMIC);
 275         if (err < 0) {
 276                 /* -EPERM: urb is being killed;
 277                  * -ENODEV: device got disconnected */
 278                 if (err != -EPERM && err != -ENODEV)
 279                         BT_ERR("%s urb %p failed to resubmit (%d)",
 280                                                 hdev->name, urb, -err);
 281                 usb_unanchor_urb(urb);
 282         }
 283 }
 284
 285 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 286 {
 287         struct btusb_data *data = hci_get_drvdata(hdev);
 288         struct urb *urb;
 289         unsigned char *buf;
 290         unsigned int pipe;
 291         int err, size;
 292
 293         BT_DBG("%s", hdev->name);
 294
 295         if (!data->intr_ep)
 296                 return -ENODEV;
 297
 298         urb = usb_alloc_urb(0, mem_flags);
 299         if (!urb)
 300                 return -ENOMEM;
 301
 302         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 303
 304         buf = kmalloc(size, mem_flags);
 305         if (!buf) {
 306                 usb_free_urb(urb);
 307                 return -ENOMEM;
 308         }
 309
 310         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 311
 312         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 313                                                 btusb_intr_complete, hdev,
 314                                                 data->intr_ep->bInterval);
 315
 316         urb->transfer_flags |= URB_FREE_BUFFER;
 317
 318         usb_anchor_urb(urb, &data->intr_anchor);
 319
 320         err = usb_submit_urb(urb, mem_flags);
 321         if (err < 0) {
 322                 if (err != -EPERM && err != -ENODEV)
 323                         BT_ERR("%s urb %p submission failed (%d)",
 324                                                 hdev->name, urb, -err);
 325                 usb_unanchor_urb(urb);
 326         }
 327
 328         usb_free_urb(urb);
 329
 330         return err;
 331 }
 332
 333 static void btusb_bulk_complete(struct urb *urb)
 334 {
 335         struct hci_dev *hdev = urb->context;
 336         struct btusb_data *data = hci_get_drvdata(hdev);
 337         int err;
 338
 339         BT_DBG("%s urb %p status %d count %d", hdev->name,
 340                                         urb, urb->status, urb->actual_length);
 341
 342         if (!test_bit(HCI_RUNNING, &hdev->flags))
 343                 return;
 344
 345         if (urb->status == 0) {
 346                 hdev->stat.byte_rx += urb->actual_length;
 347
 348                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 349                                                 urb->transfer_buffer,
 350                                                 urb->actual_length) < 0) {
 351                         BT_ERR("%s corrupted ACL packet", hdev->name);
 352                         hdev->stat.err_rx++;
 353                 }
 354         }
 355
 356         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 357                 return;
 358
 359         usb_anchor_urb(urb, &data->bulk_anchor);
 360         usb_mark_last_busy(data->udev);
 361
 362         err = usb_submit_urb(urb, GFP_ATOMIC);
 363         if (err < 0) {
 364                 /* -EPERM: urb is being killed;
 365                  * -ENODEV: device got disconnected */
 366                 if (err != -EPERM && err != -ENODEV)
 367                         BT_ERR("%s urb %p failed to resubmit (%d)",
 368                                                 hdev->name, urb, -err);
 369                 usb_unanchor_urb(urb);
 370         }
 371 }
 372
 373 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 374 {
 375         struct btusb_data *data = hci_get_drvdata(hdev);
 376         struct urb *urb;
 377         unsigned char *buf;
 378         unsigned int pipe;
 379         int err, size = HCI_MAX_FRAME_SIZE;
 380
 381         BT_DBG("%s", hdev->name);
 382
 383         if (!data->bulk_rx_ep)
 384                 return -ENODEV;
 385
 386         urb = usb_alloc_urb(0, mem_flags);
 387         if (!urb)
 388                 return -ENOMEM;
 389
 390         buf = kmalloc(size, mem_flags);
 391         if (!buf) {
 392                 usb_free_urb(urb);
 393                 return -ENOMEM;
 394         }
 395
 396         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 397
 398         usb_fill_bulk_urb(urb, data->udev, pipe,
 399                                         buf, size, btusb_bulk_complete, hdev);
 400
 401         urb->transfer_flags |= URB_FREE_BUFFER;
 402
 403         usb_mark_last_busy(data->udev);
 404         usb_anchor_urb(urb, &data->bulk_anchor);
 405
 406         err = usb_submit_urb(urb, mem_flags);
 407         if (err < 0) {
 408                 if (err != -EPERM && err != -ENODEV)
 409                         BT_ERR("%s urb %p submission failed (%d)",
 410                                                 hdev->name, urb, -err);
 411                 usb_unanchor_urb(urb);
 412         }
 413
 414         usb_free_urb(urb);
 415
 416         return err;
 417 }
 418
 419 static void btusb_isoc_complete(struct urb *urb)
 420 {
 421         struct hci_dev *hdev = urb->context;
 422         struct btusb_data *data = hci_get_drvdata(hdev);
 423         int i, err;
 424
 425         BT_DBG("%s urb %p status %d count %d", hdev->name,
 426                                         urb, urb->status, urb->actual_length);
 427
 428         if (!test_bit(HCI_RUNNING, &hdev->flags))
 429                 return;
 430
 431         if (urb->status == 0) {
 432                 for (i = 0; i < urb->number_of_packets; i++) {
 433                         unsigned int offset = urb->iso_frame_desc[i].offset;
 434                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 435
 436                         if (urb->iso_frame_desc[i].status)
 437                                 continue;
 438
 439                         hdev->stat.byte_rx += length;
 440
 441                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 442                                                 urb->transfer_buffer + offset,
 443                                                                 length) < 0) {
 444                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 445                                 hdev->stat.err_rx++;
 446                         }
 447                 }
 448         }
 449
 450         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 451                 return;
 452
 453         usb_anchor_urb(urb, &data->isoc_anchor);
 454
 455         err = usb_submit_urb(urb, GFP_ATOMIC);
 456         if (err < 0) {
 457                 /* -EPERM: urb is being killed;
 458                  * -ENODEV: device got disconnected */
 459                 if (err != -EPERM && err != -ENODEV)
 460                         BT_ERR("%s urb %p failed to resubmit (%d)",
 461                                                 hdev->name, urb, -err);
 462                 usb_unanchor_urb(urb);
 463         }
 464 }
 465
 466 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 467 {
 468         int i, offset = 0;
 469
 470         BT_DBG("len %d mtu %d", len, mtu);
 471
 472         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 473                                         i++, offset += mtu, len -= mtu) {
 474                 urb->iso_frame_desc[i].offset = offset;
 475                 urb->iso_frame_desc[i].length = mtu;
 476         }
 477
 478         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 479                 urb->iso_frame_desc[i].offset = offset;
 480                 urb->iso_frame_desc[i].length = len;
 481                 i++;
 482         }
 483
 484         urb->number_of_packets = i;
 485 }
 486
 487 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 488 {
 489         struct btusb_data *data = hci_get_drvdata(hdev);
 490         struct urb *urb;
 491         unsigned char *buf;
 492         unsigned int pipe;
 493         int err, size;
 494
 495         BT_DBG("%s", hdev->name);
 496
 497         if (!data->isoc_rx_ep)
 498                 return -ENODEV;
 499
 500         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 501         if (!urb)
 502                 return -ENOMEM;
 503
 504         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 505                                                 BTUSB_MAX_ISOC_FRAMES;
 506
 507         buf = kmalloc(size, mem_flags);
 508         if (!buf) {
 509                 usb_free_urb(urb);
 510                 return -ENOMEM;
 511         }
 512
 513         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 514
 515         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 516                                 hdev, data->isoc_rx_ep->bInterval);
 517
 518         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 519
 520         __fill_isoc_descriptor(urb, size,
 521                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 522
 523         usb_anchor_urb(urb, &data->isoc_anchor);
 524
 525         err = usb_submit_urb(urb, mem_flags);
 526         if (err < 0) {
 527                 if (err != -EPERM && err != -ENODEV)
 528                         BT_ERR("%s urb %p submission failed (%d)",
 529                                                 hdev->name, urb, -err);
 530                 usb_unanchor_urb(urb);
 531         }
 532
 533         usb_free_urb(urb);
 534
 535         return err;
 536 }
 537
 538 static void btusb_tx_complete(struct urb *urb)
 539 {
 540         struct sk_buff *skb = urb->context;
 541         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 542         struct btusb_data *data = hci_get_drvdata(hdev);
 543
 544         BT_DBG("%s urb %p status %d count %d", hdev->name,
 545                                         urb, urb->status, urb->actual_length);
 546
 547         if (!test_bit(HCI_RUNNING, &hdev->flags))
 548                 goto done;
 549
 550         if (!urb->status)
 551                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 552         else
 553                 hdev->stat.err_tx++;
 554
 555 done:
 556         spin_lock(&data->txlock);
 557         data->tx_in_flight--;
 558         spin_unlock(&data->txlock);
 559
 560         kfree(urb->setup_packet);
 561
 562         kfree_skb(skb);
 563 }
 564
 565 static void btusb_isoc_tx_complete(struct urb *urb)
 566 {
 567         struct sk_buff *skb = urb->context;
 568         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 569
 570         BT_DBG("%s urb %p status %d count %d", hdev->name,
 571                                         urb, urb->status, urb->actual_length);
 572
 573         if (!test_bit(HCI_RUNNING, &hdev->flags))
 574                 goto done;
 575
 576         if (!urb->status)
 577                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 578         else
 579                 hdev->stat.err_tx++;
 580
 581 done:
 582         kfree(urb->setup_packet);
 583
 584         kfree_skb(skb);
 585 }
 586
 587 static int btusb_open(struct hci_dev *hdev)
 588 {
 589         struct btusb_data *data = hci_get_drvdata(hdev);
 590         int err;
 591
 592         BT_DBG("%s", hdev->name);
 593
 594         err = usb_autopm_get_interface(data->intf);
 595         if (err < 0)
 596                 return err;
 597
 598         data->intf->needs_remote_wakeup = 1;
 599
 600         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 601                 goto done;
 602
 603         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 604                 goto done;
 605
 606         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 607         if (err < 0)
 608                 goto failed;
 609
 610         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 611         if (err < 0) {
 612                 usb_kill_anchored_urbs(&data->intr_anchor);
 613                 goto failed;
 614         }
 615
 616         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 617         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 618
 619 done:
 620         usb_autopm_put_interface(data->intf);
 621         return 0;
 622
 623 failed:
 624         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 625         clear_bit(HCI_RUNNING, &hdev->flags);
 626         usb_autopm_put_interface(data->intf);
 627         return err;
 628 }
 629
 630 static void btusb_stop_traffic(struct btusb_data *data)
 631 {
 632         usb_kill_anchored_urbs(&data->intr_anchor);
 633         usb_kill_anchored_urbs(&data->bulk_anchor);
 634         usb_kill_anchored_urbs(&data->isoc_anchor);
 635 }
 636
 637 static int btusb_close(struct hci_dev *hdev)
 638 {
 639         struct btusb_data *data = hci_get_drvdata(hdev);
 640         int err;
 641
 642         BT_DBG("%s", hdev->name);
 643
 644         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 645                 return 0;
 646
 647         cancel_work_sync(&data->work);
 648         cancel_work_sync(&data->waker);
 649
 650         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 651         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 652         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 653
 654         btusb_stop_traffic(data);
 655         err = usb_autopm_get_interface(data->intf);
 656         if (err < 0)
 657                 goto failed;
 658
 659         data->intf->needs_remote_wakeup = 0;
 660         usb_autopm_put_interface(data->intf);
 661
 662 failed:
 663         usb_scuttle_anchored_urbs(&data->deferred);
 664         return 0;
 665 }
 666
 667 static int btusb_flush(struct hci_dev *hdev)
 668 {
 669         struct btusb_data *data = hci_get_drvdata(hdev);
 670
 671         BT_DBG("%s", hdev->name);
 672
 673         usb_kill_anchored_urbs(&data->tx_anchor);
 674
 675         return 0;
 676 }
 677
 678 static int btusb_send_frame(struct sk_buff *skb)
 679 {
 680         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 681         struct btusb_data *data = hci_get_drvdata(hdev);
 682         struct usb_ctrlrequest *dr;
 683         struct urb *urb;
 684         unsigned int pipe;
 685         int err;
 686
 687         BT_DBG("%s", hdev->name);
 688
 689         if (!test_bit(HCI_RUNNING, &hdev->flags))
 690                 return -EBUSY;
 691
 692         switch (bt_cb(skb)->pkt_type) {
 693         case HCI_COMMAND_PKT:
 694                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 695                 if (!urb)
 696                         return -ENOMEM;
 697
 698                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 699                 if (!dr) {
 700                         usb_free_urb(urb);
 701                         return -ENOMEM;
 702                 }
 703
 704                 dr->bRequestType = data->cmdreq_type;
 705                 dr->bRequest     = 0;
 706                 dr->wIndex       = 0;
 707                 dr->wValue       = 0;
 708                 dr->wLength      = __cpu_to_le16(skb->len);
 709
 710                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 711
 712                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 713                                 skb->data, skb->len, btusb_tx_complete, skb);
 714
 715                 hdev->stat.cmd_tx++;
 716                 break;
 717
 718         case HCI_ACLDATA_PKT:
 719                 if (!data->bulk_tx_ep)
 720                         return -ENODEV;
 721
 722                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 723                 if (!urb)
 724                         return -ENOMEM;
 725
 726                 pipe = usb_sndbulkpipe(data->udev,
 727                                         data->bulk_tx_ep->bEndpointAddress);
 728
 729                 usb_fill_bulk_urb(urb, data->udev, pipe,
 730                                 skb->data, skb->len, btusb_tx_complete, skb);
 731
 732                 hdev->stat.acl_tx++;
 733                 break;
 734
 735         case HCI_SCODATA_PKT:
 736                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 737                         return -ENODEV;
 738
 739                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 740                 if (!urb)
 741                         return -ENOMEM;
 742
 743                 pipe = usb_sndisocpipe(data->udev,
 744                                         data->isoc_tx_ep->bEndpointAddress);
 745
 746                 usb_fill_int_urb(urb, data->udev, pipe,
 747                                 skb->data, skb->len, btusb_isoc_tx_complete,
 748                                 skb, data->isoc_tx_ep->bInterval);
 749
 750                 urb->transfer_flags  = URB_ISO_ASAP;
 751
 752                 __fill_isoc_descriptor(urb, skb->len,
 753                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 754
 755                 hdev->stat.sco_tx++;
 756                 goto skip_waking;
 757
 758         default:
 759                 return -EILSEQ;
 760         }
 761
 762         err = inc_tx(data);
 763         if (err) {
 764                 usb_anchor_urb(urb, &data->deferred);
 765                 schedule_work(&data->waker);
 766                 err = 0;
 767                 goto done;
 768         }
 769
 770 skip_waking:
 771         usb_anchor_urb(urb, &data->tx_anchor);
 772
 773         err = usb_submit_urb(urb, GFP_ATOMIC);
 774         if (err < 0) {
 775                 if (err != -EPERM && err != -ENODEV)
 776                         BT_ERR("%s urb %p submission failed (%d)",
 777                                                 hdev->name, urb, -err);
 778                 kfree(urb->setup_packet);
 779                 usb_unanchor_urb(urb);
 780         } else {
 781                 usb_mark_last_busy(data->udev);
 782         }
 783
 784 done:
 785         usb_free_urb(urb);
 786         return err;
 787 }
 788
 789 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 790 {
 791         struct btusb_data *data = hci_get_drvdata(hdev);
 792
 793         BT_DBG("%s evt %d", hdev->name, evt);
 794
 795         if (hdev->conn_hash.sco_num != data->sco_num) {
 796                 data->sco_num = hdev->conn_hash.sco_num;
 797                 schedule_work(&data->work);
 798         }
 799 }
 800
 801 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 802 {
 803         struct btusb_data *data = hci_get_drvdata(hdev);
 804         struct usb_interface *intf = data->isoc;
 805         struct usb_endpoint_descriptor *ep_desc;
 806         int i, err;
 807
 808         if (!data->isoc)
 809                 return -ENODEV;
 810
 811         err = usb_set_interface(data->udev, 1, altsetting);
 812         if (err < 0) {
 813                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 814                 return err;
 815         }
 816
 817         data->isoc_altsetting = altsetting;
 818
 819         data->isoc_tx_ep = NULL;
 820         data->isoc_rx_ep = NULL;
 821
 822         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 823                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 824
 825                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 826                         data->isoc_tx_ep = ep_desc;
 827                         continue;
 828                 }
 829
 830                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 831                         data->isoc_rx_ep = ep_desc;
 832                         continue;
 833                 }
 834         }
 835
 836         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 837                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 838                 return -ENODEV;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static void btusb_work(struct work_struct *work)
 845 {
 846         struct btusb_data *data = container_of(work, struct btusb_data, work);
 847         struct hci_dev *hdev = data->hdev;
 848         int err;
 849
 850         if (hdev->conn_hash.sco_num > 0) {
 851                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 852                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 853                         if (err < 0) {
 854                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 855                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 856                                 return;
 857                         }
 858
 859                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 860                 }
 861                 if (data->isoc_altsetting != 2) {
 862                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 863                         usb_kill_anchored_urbs(&data->isoc_anchor);
 864
 865                         if (__set_isoc_interface(hdev, 2) < 0)
 866                                 return;
 867                 }
 868
 869                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 870                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 871                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 872                         else
 873                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 874                 }
 875         } else {
 876                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 877                 usb_kill_anchored_urbs(&data->isoc_anchor);
 878
 879                 __set_isoc_interface(hdev, 0);
 880                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 881                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 882         }
 883 }
 884
 885 static void btusb_waker(struct work_struct *work)
 886 {
 887         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 888         int err;
 889
 890         err = usb_autopm_get_interface(data->intf);
 891         if (err < 0)
 892                 return;
 893
 894         usb_autopm_put_interface(data->intf);
 895 }
 896
 897 static int btusb_probe(struct usb_interface *intf,
 898                                 const struct usb_device_id *id)
 899 {
 900         struct usb_endpoint_descriptor *ep_desc;
 901         struct btusb_data *data;
 902         struct hci_dev *hdev;
 903         int i, err;
 904
 905         BT_DBG("intf %p id %p", intf, id);
 906
 907         /* interface numbers are hardcoded in the spec */
 908         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 909                 return -ENODEV;
 910
 911         if (!id->driver_info) {
 912                 const struct usb_device_id *match;
 913                 match = usb_match_id(intf, blacklist_table);
 914                 if (match)
 915                         id = match;
 916         }
 917
 918         if (id->driver_info == BTUSB_IGNORE)
 919                 return -ENODEV;
 920
 921         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 922                 return -ENODEV;
 923
 924         if (ignore_csr && id->driver_info & BTUSB_CSR)
 925                 return -ENODEV;
 926
 927         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 928                 return -ENODEV;
 929
 930         if (id->driver_info & BTUSB_ATH3012) {
 931                 struct usb_device *udev = interface_to_usbdev(intf);
 932
 933                 /* Old firmware would otherwise let ath3k driver load
 934                  * patch and sysconfig files */
 935                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 936                         return -ENODEV;
 937         }
 938
 939         data = kzalloc(sizeof(*data), GFP_KERNEL);
 940         if (!data)
 941                 return -ENOMEM;
 942
 943         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 944                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 945
 946                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 947                         data->intr_ep = ep_desc;
 948                         continue;
 949                 }
 950
 951                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 952                         data->bulk_tx_ep = ep_desc;
 953                         continue;
 954                 }
 955
 956                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 957                         data->bulk_rx_ep = ep_desc;
 958                         continue;
 959                 }
 960         }
 961
 962         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 963                 kfree(data);
 964                 return -ENODEV;
 965         }
 966
 967         data->cmdreq_type = USB_TYPE_CLASS;
 968
 969         data->udev = interface_to_usbdev(intf);
 970         data->intf = intf;
 971
 972         spin_lock_init(&data->lock);
 973
 974         INIT_WORK(&data->work, btusb_work);
 975         INIT_WORK(&data->waker, btusb_waker);
 976         spin_lock_init(&data->txlock);
 977
 978         init_usb_anchor(&data->tx_anchor);
 979         init_usb_anchor(&data->intr_anchor);
 980         init_usb_anchor(&data->bulk_anchor);
 981         init_usb_anchor(&data->isoc_anchor);
 982         init_usb_anchor(&data->deferred);
 983
 984         hdev = hci_alloc_dev();
 985         if (!hdev) {
 986                 kfree(data);
 987                 return -ENOMEM;
 988         }
 989
 990         hdev->bus = HCI_USB;
 991         hci_set_drvdata(hdev, data);
 992
 993         data->hdev = hdev;
 994
 995         SET_HCIDEV_DEV(hdev, &intf->dev);
 996
 997         hdev->open     = btusb_open;
 998         hdev->close    = btusb_close;
 999         hdev->flush    = btusb_flush;
1000         hdev->send     = btusb_send_frame;
1001         hdev->notify   = btusb_notify;
1002
1003         /* Interface numbers are hardcoded in the specification */
1004         data->isoc = usb_ifnum_to_if(data->udev, 1);
1005
1006         if (!reset)
1007                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1008
1009         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1010                 if (!disable_scofix)
1011                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1012         }
1013
1014         if (id->driver_info & BTUSB_BROKEN_ISOC)
1015                 data->isoc = NULL;
1016
1017         if (id->driver_info & BTUSB_DIGIANSWER) {
1018                 data->cmdreq_type = USB_TYPE_VENDOR;
1019                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1020         }
1021
1022         if (id->driver_info & BTUSB_CSR) {
1023                 struct usb_device *udev = data->udev;
1024
1025                 /* Old firmware would otherwise execute USB reset */
1026                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1027                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1028         }
1029
1030         if (id->driver_info & BTUSB_SNIFFER) {
1031                 struct usb_device *udev = data->udev;
1032
1033                 /* New sniffer firmware has crippled HCI interface */
1034                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1035                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1036
1037                 data->isoc = NULL;
1038         }
1039
1040         if (id->driver_info & BTUSB_BCM92035) {
1041                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1042                 struct sk_buff *skb;
1043
1044                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1045                 if (skb) {
1046                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1047                         skb_queue_tail(&hdev->driver_init, skb);
1048                 }
1049         }
1050
1051         if (data->isoc) {
1052                 err = usb_driver_claim_interface(&btusb_driver,
1053                                                         data->isoc, data);
1054                 if (err < 0) {
1055                         hci_free_dev(hdev);
1056                         kfree(data);
1057                         return err;
1058                 }
1059         }
1060
1061         err = hci_register_dev(hdev);
1062         if (err < 0) {
1063                 hci_free_dev(hdev);
1064                 kfree(data);
1065                 return err;
1066         }
1067
1068         usb_set_intfdata(intf, data);
1069
1070         return 0;
1071 }
1072
1073 static void btusb_disconnect(struct usb_interface *intf)
1074 {
1075         struct btusb_data *data = usb_get_intfdata(intf);
1076         struct hci_dev *hdev;
1077
1078         BT_DBG("intf %p", intf);
1079
1080         if (!data)
1081                 return;
1082
1083         hdev = data->hdev;
1084         usb_set_intfdata(data->intf, NULL);
1085
1086         if (data->isoc)
1087                 usb_set_intfdata(data->isoc, NULL);
1088
1089         hci_unregister_dev(hdev);
1090
1091         if (intf == data->isoc)
1092                 usb_driver_release_interface(&btusb_driver, data->intf);
1093         else if (data->isoc)
1094                 usb_driver_release_interface(&btusb_driver, data->isoc);
1095
1096         hci_free_dev(hdev);
1097         kfree(data);
1098 }
1099
1100 #ifdef CONFIG_PM
1101 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1102 {
1103         struct btusb_data *data = usb_get_intfdata(intf);
1104
1105         BT_DBG("intf %p", intf);
1106
1107         if (data->suspend_count++)
1108                 return 0;
1109
1110         spin_lock_irq(&data->txlock);
1111         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1112                 set_bit(BTUSB_SUSPENDING, &data->flags);
1113                 spin_unlock_irq(&data->txlock);
1114         } else {
1115                 spin_unlock_irq(&data->txlock);
1116                 data->suspend_count--;
1117                 return -EBUSY;
1118         }
1119
1120         cancel_work_sync(&data->work);
1121
1122         btusb_stop_traffic(data);
1123         usb_kill_anchored_urbs(&data->tx_anchor);
1124
1125         return 0;
1126 }
1127
1128 static void play_deferred(struct btusb_data *data)
1129 {
1130         struct urb *urb;
1131         int err;
1132
1133         while ((urb = usb_get_from_anchor(&data->deferred))) {
1134                 err = usb_submit_urb(urb, GFP_ATOMIC);
1135                 if (err < 0)
1136                         break;
1137
1138                 data->tx_in_flight++;
1139         }
1140         usb_scuttle_anchored_urbs(&data->deferred);
1141 }
1142
1143 static int btusb_resume(struct usb_interface *intf)
1144 {
1145         struct btusb_data *data = usb_get_intfdata(intf);
1146         struct hci_dev *hdev = data->hdev;
1147         int err = 0;
1148
1149         BT_DBG("intf %p", intf);
1150
1151         if (--data->suspend_count)
1152                 return 0;
1153
1154         if (!test_bit(HCI_RUNNING, &hdev->flags))
1155                 goto done;
1156
1157         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1158                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1159                 if (err < 0) {
1160                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1161                         goto failed;
1162                 }
1163         }
1164
1165         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1166                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1167                 if (err < 0) {
1168                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1169                         goto failed;
1170                 }
1171
1172                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1173         }
1174
1175         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1176                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1177                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1178                 else
1179                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1180         }
1181
1182         spin_lock_irq(&data->txlock);
1183         play_deferred(data);
1184         clear_bit(BTUSB_SUSPENDING, &data->flags);
1185         spin_unlock_irq(&data->txlock);
1186         schedule_work(&data->work);
1187
1188         return 0;
1189
1190 failed:
1191         usb_scuttle_anchored_urbs(&data->deferred);
1192 done:
1193         spin_lock_irq(&data->txlock);
1194         clear_bit(BTUSB_SUSPENDING, &data->flags);
1195         spin_unlock_irq(&data->txlock);
1196
1197         return err;
1198 }
1199 #endif
1200
1201 static struct usb_driver btusb_driver = {
1202         .name           = "btusb",
1203         .probe          = btusb_probe,
1204         .disconnect     = btusb_disconnect,
1205 #ifdef CONFIG_PM
1206         .suspend        = btusb_suspend,
1207         .resume         = btusb_resume,
1208 #endif
1209         .id_table       = btusb_table,
1210         .supports_autosuspend = 1,
1211 };
1212
1213 module_usb_driver(btusb_driver);
1214
1215 module_param(ignore_dga, bool, 0644);
1216 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1217
1218 module_param(ignore_csr, bool, 0644);
1219 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1220
1221 module_param(ignore_sniffer, bool, 0644);
1222 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1223
1224 module_param(disable_scofix, bool, 0644);
1225 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1226
1227 module_param(force_scofix, bool, 0644);
1228 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1229
1230 module_param(reset, bool, 0644);
1231 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1232
1233 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1234 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1235 MODULE_VERSION(VERSION);
1236 MODULE_LICENSE("GPL");