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                 BT_ERR("%s urb %p submission failed (%d)",
 319                                                 hdev->name, urb, -err);
 320                 usb_unanchor_urb(urb);
 321         }
 322
 323         usb_free_urb(urb);
 324
 325         return err;
 326 }
 327
 328 static void btusb_bulk_complete(struct urb *urb)
 329 {
 330         struct hci_dev *hdev = urb->context;
 331         struct btusb_data *data = hdev->driver_data;
 332         int err;
 333
 334         BT_DBG("%s urb %p status %d count %d", hdev->name,
 335                                         urb, urb->status, urb->actual_length);
 336
 337         if (!test_bit(HCI_RUNNING, &hdev->flags))
 338                 return;
 339
 340         if (urb->status == 0) {
 341                 hdev->stat.byte_rx += urb->actual_length;
 342
 343                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 344                                                 urb->transfer_buffer,
 345                                                 urb->actual_length) < 0) {
 346                         BT_ERR("%s corrupted ACL packet", hdev->name);
 347                         hdev->stat.err_rx++;
 348                 }
 349         }
 350
 351         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 352                 return;
 353
 354         usb_anchor_urb(urb, &data->bulk_anchor);
 355         usb_mark_last_busy(data->udev);
 356
 357         err = usb_submit_urb(urb, GFP_ATOMIC);
 358         if (err < 0) {
 359                 /* -EPERM: urb is being killed;
 360                  * -ENODEV: device got disconnected */
 361                 if (err != -EPERM && err != -ENODEV)
 362                         BT_ERR("%s urb %p failed to resubmit (%d)",
 363                                                 hdev->name, urb, -err);
 364                 usb_unanchor_urb(urb);
 365         }
 366 }
 367
 368 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 369 {
 370         struct btusb_data *data = hdev->driver_data;
 371         struct urb *urb;
 372         unsigned char *buf;
 373         unsigned int pipe;
 374         int err, size = HCI_MAX_FRAME_SIZE;
 375
 376         BT_DBG("%s", hdev->name);
 377
 378         if (!data->bulk_rx_ep)
 379                 return -ENODEV;
 380
 381         urb = usb_alloc_urb(0, mem_flags);
 382         if (!urb)
 383                 return -ENOMEM;
 384
 385         buf = kmalloc(size, mem_flags);
 386         if (!buf) {
 387                 usb_free_urb(urb);
 388                 return -ENOMEM;
 389         }
 390
 391         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 392
 393         usb_fill_bulk_urb(urb, data->udev, pipe,
 394                                         buf, size, btusb_bulk_complete, hdev);
 395
 396         urb->transfer_flags |= URB_FREE_BUFFER;
 397
 398         usb_mark_last_busy(data->udev);
 399         usb_anchor_urb(urb, &data->bulk_anchor);
 400
 401         err = usb_submit_urb(urb, mem_flags);
 402         if (err < 0) {
 403                 BT_ERR("%s urb %p submission failed (%d)",
 404                                                 hdev->name, urb, -err);
 405                 usb_unanchor_urb(urb);
 406         }
 407
 408         usb_free_urb(urb);
 409
 410         return err;
 411 }
 412
 413 static void btusb_isoc_complete(struct urb *urb)
 414 {
 415         struct hci_dev *hdev = urb->context;
 416         struct btusb_data *data = hdev->driver_data;
 417         int i, err;
 418
 419         BT_DBG("%s urb %p status %d count %d", hdev->name,
 420                                         urb, urb->status, urb->actual_length);
 421
 422         if (!test_bit(HCI_RUNNING, &hdev->flags))
 423                 return;
 424
 425         if (urb->status == 0) {
 426                 for (i = 0; i < urb->number_of_packets; i++) {
 427                         unsigned int offset = urb->iso_frame_desc[i].offset;
 428                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 429
 430                         if (urb->iso_frame_desc[i].status)
 431                                 continue;
 432
 433                         hdev->stat.byte_rx += length;
 434
 435                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 436                                                 urb->transfer_buffer + offset,
 437                                                                 length) < 0) {
 438                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 439                                 hdev->stat.err_rx++;
 440                         }
 441                 }
 442         }
 443
 444         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 445                 return;
 446
 447         usb_anchor_urb(urb, &data->isoc_anchor);
 448
 449         err = usb_submit_urb(urb, GFP_ATOMIC);
 450         if (err < 0) {
 451                 /* -EPERM: urb is being killed;
 452                  * -ENODEV: device got disconnected */
 453                 if (err != -EPERM && err != -ENODEV)
 454                         BT_ERR("%s urb %p failed to resubmit (%d)",
 455                                                 hdev->name, urb, -err);
 456                 usb_unanchor_urb(urb);
 457         }
 458 }
 459
 460 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 461 {
 462         int i, offset = 0;
 463
 464         BT_DBG("len %d mtu %d", len, mtu);
 465
 466         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 467                                         i++, offset += mtu, len -= mtu) {
 468                 urb->iso_frame_desc[i].offset = offset;
 469                 urb->iso_frame_desc[i].length = mtu;
 470         }
 471
 472         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 473                 urb->iso_frame_desc[i].offset = offset;
 474                 urb->iso_frame_desc[i].length = len;
 475                 i++;
 476         }
 477
 478         urb->number_of_packets = i;
 479 }
 480
 481 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 482 {
 483         struct btusb_data *data = hdev->driver_data;
 484         struct urb *urb;
 485         unsigned char *buf;
 486         unsigned int pipe;
 487         int err, size;
 488
 489         BT_DBG("%s", hdev->name);
 490
 491         if (!data->isoc_rx_ep)
 492                 return -ENODEV;
 493
 494         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 495         if (!urb)
 496                 return -ENOMEM;
 497
 498         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 499                                                 BTUSB_MAX_ISOC_FRAMES;
 500
 501         buf = kmalloc(size, mem_flags);
 502         if (!buf) {
 503                 usb_free_urb(urb);
 504                 return -ENOMEM;
 505         }
 506
 507         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 508
 509         urb->dev      = data->udev;
 510         urb->pipe     = pipe;
 511         urb->context  = hdev;
 512         urb->complete = btusb_isoc_complete;
 513         urb->interval = data->isoc_rx_ep->bInterval;
 514
 515         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 516         urb->transfer_buffer = buf;
 517         urb->transfer_buffer_length = size;
 518
 519         __fill_isoc_descriptor(urb, size,
 520                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 521
 522         usb_anchor_urb(urb, &data->isoc_anchor);
 523
 524         err = usb_submit_urb(urb, mem_flags);
 525         if (err < 0) {
 526                 BT_ERR("%s urb %p submission failed (%d)",
 527                                                 hdev->name, urb, -err);
 528                 usb_unanchor_urb(urb);
 529         }
 530
 531         usb_free_urb(urb);
 532
 533         return err;
 534 }
 535
 536 static void btusb_tx_complete(struct urb *urb)
 537 {
 538         struct sk_buff *skb = urb->context;
 539         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 540         struct btusb_data *data = hdev->driver_data;
 541
 542         BT_DBG("%s urb %p status %d count %d", hdev->name,
 543                                         urb, urb->status, urb->actual_length);
 544
 545         if (!test_bit(HCI_RUNNING, &hdev->flags))
 546                 goto done;
 547
 548         if (!urb->status)
 549                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 550         else
 551                 hdev->stat.err_tx++;
 552
 553 done:
 554         spin_lock(&data->txlock);
 555         data->tx_in_flight--;
 556         spin_unlock(&data->txlock);
 557
 558         kfree(urb->setup_packet);
 559
 560         kfree_skb(skb);
 561 }
 562
 563 static void btusb_isoc_tx_complete(struct urb *urb)
 564 {
 565         struct sk_buff *skb = urb->context;
 566         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 567
 568         BT_DBG("%s urb %p status %d count %d", hdev->name,
 569                                         urb, urb->status, urb->actual_length);
 570
 571         if (!test_bit(HCI_RUNNING, &hdev->flags))
 572                 goto done;
 573
 574         if (!urb->status)
 575                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 576         else
 577                 hdev->stat.err_tx++;
 578
 579 done:
 580         kfree(urb->setup_packet);
 581
 582         kfree_skb(skb);
 583 }
 584
 585 static int btusb_open(struct hci_dev *hdev)
 586 {
 587         struct btusb_data *data = hdev->driver_data;
 588         int err;
 589
 590         BT_DBG("%s", hdev->name);
 591
 592         err = usb_autopm_get_interface(data->intf);
 593         if (err < 0)
 594                 return err;
 595
 596         data->intf->needs_remote_wakeup = 1;
 597
 598         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 599                 goto done;
 600
 601         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 602                 goto done;
 603
 604         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 605         if (err < 0)
 606                 goto failed;
 607
 608         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 609         if (err < 0) {
 610                 usb_kill_anchored_urbs(&data->intr_anchor);
 611                 goto failed;
 612         }
 613
 614         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 615         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 616
 617 done:
 618         usb_autopm_put_interface(data->intf);
 619         return 0;
 620
 621 failed:
 622         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 623         clear_bit(HCI_RUNNING, &hdev->flags);
 624         usb_autopm_put_interface(data->intf);
 625         return err;
 626 }
 627
 628 static void btusb_stop_traffic(struct btusb_data *data)
 629 {
 630         usb_kill_anchored_urbs(&data->intr_anchor);
 631         usb_kill_anchored_urbs(&data->bulk_anchor);
 632         usb_kill_anchored_urbs(&data->isoc_anchor);
 633 }
 634
 635 static int btusb_close(struct hci_dev *hdev)
 636 {
 637         struct btusb_data *data = hdev->driver_data;
 638         int err;
 639
 640         BT_DBG("%s", hdev->name);
 641
 642         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 643                 return 0;
 644
 645         cancel_work_sync(&data->work);
 646         cancel_work_sync(&data->waker);
 647
 648         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 649         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 650         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 651
 652         btusb_stop_traffic(data);
 653         err = usb_autopm_get_interface(data->intf);
 654         if (err < 0)
 655                 goto failed;
 656
 657         data->intf->needs_remote_wakeup = 0;
 658         usb_autopm_put_interface(data->intf);
 659
 660 failed:
 661         usb_scuttle_anchored_urbs(&data->deferred);
 662         return 0;
 663 }
 664
 665 static int btusb_flush(struct hci_dev *hdev)
 666 {
 667         struct btusb_data *data = hdev->driver_data;
 668
 669         BT_DBG("%s", hdev->name);
 670
 671         usb_kill_anchored_urbs(&data->tx_anchor);
 672
 673         return 0;
 674 }
 675
 676 static int btusb_send_frame(struct sk_buff *skb)
 677 {
 678         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 679         struct btusb_data *data = hdev->driver_data;
 680         struct usb_ctrlrequest *dr;
 681         struct urb *urb;
 682         unsigned int pipe;
 683         int err;
 684
 685         BT_DBG("%s", hdev->name);
 686
 687         if (!test_bit(HCI_RUNNING, &hdev->flags))
 688                 return -EBUSY;
 689
 690         switch (bt_cb(skb)->pkt_type) {
 691         case HCI_COMMAND_PKT:
 692                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 693                 if (!urb)
 694                         return -ENOMEM;
 695
 696                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 697                 if (!dr) {
 698                         usb_free_urb(urb);
 699                         return -ENOMEM;
 700                 }
 701
 702                 dr->bRequestType = data->cmdreq_type;
 703                 dr->bRequest     = 0;
 704                 dr->wIndex       = 0;
 705                 dr->wValue       = 0;
 706                 dr->wLength      = __cpu_to_le16(skb->len);
 707
 708                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 709
 710                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 711                                 skb->data, skb->len, btusb_tx_complete, skb);
 712
 713                 hdev->stat.cmd_tx++;
 714                 break;
 715
 716         case HCI_ACLDATA_PKT:
 717                 if (!data->bulk_tx_ep)
 718                         return -ENODEV;
 719
 720                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 721                 if (!urb)
 722                         return -ENOMEM;
 723
 724                 pipe = usb_sndbulkpipe(data->udev,
 725                                         data->bulk_tx_ep->bEndpointAddress);
 726
 727                 usb_fill_bulk_urb(urb, data->udev, pipe,
 728                                 skb->data, skb->len, btusb_tx_complete, skb);
 729
 730                 hdev->stat.acl_tx++;
 731                 break;
 732
 733         case HCI_SCODATA_PKT:
 734                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 735                         return -ENODEV;
 736
 737                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 738                 if (!urb)
 739                         return -ENOMEM;
 740
 741                 pipe = usb_sndisocpipe(data->udev,
 742                                         data->isoc_tx_ep->bEndpointAddress);
 743
 744                 usb_fill_int_urb(urb, data->udev, pipe,
 745                                 skb->data, skb->len, btusb_isoc_tx_complete,
 746                                 skb, data->isoc_tx_ep->bInterval);
 747
 748                 urb->transfer_flags  = URB_ISO_ASAP;
 749
 750                 __fill_isoc_descriptor(urb, skb->len,
 751                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 752
 753                 hdev->stat.sco_tx++;
 754                 goto skip_waking;
 755
 756         default:
 757                 return -EILSEQ;
 758         }
 759
 760         err = inc_tx(data);
 761         if (err) {
 762                 usb_anchor_urb(urb, &data->deferred);
 763                 schedule_work(&data->waker);
 764                 err = 0;
 765                 goto done;
 766         }
 767
 768 skip_waking:
 769         usb_anchor_urb(urb, &data->tx_anchor);
 770
 771         err = usb_submit_urb(urb, GFP_ATOMIC);
 772         if (err < 0) {
 773                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 774                 kfree(urb->setup_packet);
 775                 usb_unanchor_urb(urb);
 776         } else {
 777                 usb_mark_last_busy(data->udev);
 778         }
 779
 780 done:
 781         usb_free_urb(urb);
 782         return err;
 783 }
 784
 785 static void btusb_destruct(struct hci_dev *hdev)
 786 {
 787         struct btusb_data *data = hdev->driver_data;
 788
 789         BT_DBG("%s", hdev->name);
 790
 791         kfree(data);
 792 }
 793
 794 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 795 {
 796         struct btusb_data *data = hdev->driver_data;
 797
 798         BT_DBG("%s evt %d", hdev->name, evt);
 799
 800         if (hdev->conn_hash.sco_num != data->sco_num) {
 801                 data->sco_num = hdev->conn_hash.sco_num;
 802                 schedule_work(&data->work);
 803         }
 804 }
 805
 806 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 807 {
 808         struct btusb_data *data = hdev->driver_data;
 809         struct usb_interface *intf = data->isoc;
 810         struct usb_endpoint_descriptor *ep_desc;
 811         int i, err;
 812
 813         if (!data->isoc)
 814                 return -ENODEV;
 815
 816         err = usb_set_interface(data->udev, 1, altsetting);
 817         if (err < 0) {
 818                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 819                 return err;
 820         }
 821
 822         data->isoc_altsetting = altsetting;
 823
 824         data->isoc_tx_ep = NULL;
 825         data->isoc_rx_ep = NULL;
 826
 827         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 828                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 829
 830                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 831                         data->isoc_tx_ep = ep_desc;
 832                         continue;
 833                 }
 834
 835                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 836                         data->isoc_rx_ep = ep_desc;
 837                         continue;
 838                 }
 839         }
 840
 841         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 842                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 843                 return -ENODEV;
 844         }
 845
 846         return 0;
 847 }
 848
 849 static void btusb_work(struct work_struct *work)
 850 {
 851         struct btusb_data *data = container_of(work, struct btusb_data, work);
 852         struct hci_dev *hdev = data->hdev;
 853         int err;
 854
 855         if (hdev->conn_hash.sco_num > 0) {
 856                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 857                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 858                         if (err < 0) {
 859                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 860                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 861                                 return;
 862                         }
 863
 864                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 865                 }
 866                 if (data->isoc_altsetting != 2) {
 867                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 868                         usb_kill_anchored_urbs(&data->isoc_anchor);
 869
 870                         if (__set_isoc_interface(hdev, 2) < 0)
 871                                 return;
 872                 }
 873
 874                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 875                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 876                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 877                         else
 878                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 879                 }
 880         } else {
 881                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 882                 usb_kill_anchored_urbs(&data->isoc_anchor);
 883
 884                 __set_isoc_interface(hdev, 0);
 885                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 886                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 887         }
 888 }
 889
 890 static void btusb_waker(struct work_struct *work)
 891 {
 892         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 893         int err;
 894
 895         err = usb_autopm_get_interface(data->intf);
 896         if (err < 0)
 897                 return;
 898
 899         usb_autopm_put_interface(data->intf);
 900 }
 901
 902 static int btusb_probe(struct usb_interface *intf,
 903                                 const struct usb_device_id *id)
 904 {
 905         struct usb_endpoint_descriptor *ep_desc;
 906         struct btusb_data *data;
 907         struct hci_dev *hdev;
 908         int i, err;
 909
 910         BT_DBG("intf %p id %p", intf, id);
 911
 912         /* interface numbers are hardcoded in the spec */
 913         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 914                 return -ENODEV;
 915
 916         if (!id->driver_info) {
 917                 const struct usb_device_id *match;
 918                 match = usb_match_id(intf, blacklist_table);
 919                 if (match)
 920                         id = match;
 921         }
 922
 923         if (id->driver_info == BTUSB_IGNORE)
 924                 return -ENODEV;
 925
 926         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 927                 return -ENODEV;
 928
 929         if (ignore_csr && id->driver_info & BTUSB_CSR)
 930                 return -ENODEV;
 931
 932         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 933                 return -ENODEV;
 934
 935         if (id->driver_info & BTUSB_ATH3012) {
 936                 struct usb_device *udev = interface_to_usbdev(intf);
 937
 938                 /* Old firmware would otherwise let ath3k driver load
 939                  * patch and sysconfig files */
 940                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 941                         return -ENODEV;
 942         }
 943
 944         data = kzalloc(sizeof(*data), GFP_KERNEL);
 945         if (!data)
 946                 return -ENOMEM;
 947
 948         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 949                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 950
 951                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 952                         data->intr_ep = ep_desc;
 953                         continue;
 954                 }
 955
 956                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 957                         data->bulk_tx_ep = ep_desc;
 958                         continue;
 959                 }
 960
 961                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 962                         data->bulk_rx_ep = ep_desc;
 963                         continue;
 964                 }
 965         }
 966
 967         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 968                 kfree(data);
 969                 return -ENODEV;
 970         }
 971
 972         data->cmdreq_type = USB_TYPE_CLASS;
 973
 974         data->udev = interface_to_usbdev(intf);
 975         data->intf = intf;
 976
 977         spin_lock_init(&data->lock);
 978
 979         INIT_WORK(&data->work, btusb_work);
 980         INIT_WORK(&data->waker, btusb_waker);
 981         spin_lock_init(&data->txlock);
 982
 983         init_usb_anchor(&data->tx_anchor);
 984         init_usb_anchor(&data->intr_anchor);
 985         init_usb_anchor(&data->bulk_anchor);
 986         init_usb_anchor(&data->isoc_anchor);
 987         init_usb_anchor(&data->deferred);
 988
 989         hdev = hci_alloc_dev();
 990         if (!hdev) {
 991                 kfree(data);
 992                 return -ENOMEM;
 993         }
 994
 995         hdev->bus = HCI_USB;
 996         hdev->driver_data = data;
 997
 998         data->hdev = hdev;
 999
1000         SET_HCIDEV_DEV(hdev, &intf->dev);
1001
1002         hdev->open     = btusb_open;
1003         hdev->close    = btusb_close;
1004         hdev->flush    = btusb_flush;
1005         hdev->send     = btusb_send_frame;
1006         hdev->destruct = btusb_destruct;
1007         hdev->notify   = btusb_notify;
1008
1009         hdev->owner = THIS_MODULE;
1010
1011         /* Interface numbers are hardcoded in the specification */
1012         data->isoc = usb_ifnum_to_if(data->udev, 1);
1013
1014         if (!reset)
1015                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1016
1017         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1018                 if (!disable_scofix)
1019                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1020         }
1021
1022         if (id->driver_info & BTUSB_BROKEN_ISOC)
1023                 data->isoc = NULL;
1024
1025         if (id->driver_info & BTUSB_DIGIANSWER) {
1026                 data->cmdreq_type = USB_TYPE_VENDOR;
1027                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1028         }
1029
1030         if (id->driver_info & BTUSB_CSR) {
1031                 struct usb_device *udev = data->udev;
1032
1033                 /* Old firmware would otherwise execute USB reset */
1034                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1035                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1036         }
1037
1038         if (id->driver_info & BTUSB_SNIFFER) {
1039                 struct usb_device *udev = data->udev;
1040
1041                 /* New sniffer firmware has crippled HCI interface */
1042                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1043                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1044
1045                 data->isoc = NULL;
1046         }
1047
1048         if (id->driver_info & BTUSB_BCM92035) {
1049                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1050                 struct sk_buff *skb;
1051
1052                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1053                 if (skb) {
1054                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1055                         skb_queue_tail(&hdev->driver_init, skb);
1056                 }
1057         }
1058
1059         if (data->isoc) {
1060                 err = usb_driver_claim_interface(&btusb_driver,
1061                                                         data->isoc, data);
1062                 if (err < 0) {
1063                         hci_free_dev(hdev);
1064                         kfree(data);
1065                         return err;
1066                 }
1067         }
1068
1069         err = hci_register_dev(hdev);
1070         if (err < 0) {
1071                 hci_free_dev(hdev);
1072                 kfree(data);
1073                 return err;
1074         }
1075
1076         usb_set_intfdata(intf, data);
1077
1078         return 0;
1079 }
1080
1081 static void btusb_disconnect(struct usb_interface *intf)
1082 {
1083         struct btusb_data *data = usb_get_intfdata(intf);
1084         struct hci_dev *hdev;
1085
1086         BT_DBG("intf %p", intf);
1087
1088         if (!data)
1089                 return;
1090
1091         hdev = data->hdev;
1092
1093         __hci_dev_hold(hdev);
1094
1095         usb_set_intfdata(data->intf, NULL);
1096
1097         if (data->isoc)
1098                 usb_set_intfdata(data->isoc, NULL);
1099
1100         hci_unregister_dev(hdev);
1101
1102         if (intf == data->isoc)
1103                 usb_driver_release_interface(&btusb_driver, data->intf);
1104         else if (data->isoc)
1105                 usb_driver_release_interface(&btusb_driver, data->isoc);
1106
1107         __hci_dev_put(hdev);
1108
1109         hci_free_dev(hdev);
1110 }
1111
1112 #ifdef CONFIG_PM
1113 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1114 {
1115         struct btusb_data *data = usb_get_intfdata(intf);
1116
1117         BT_DBG("intf %p", intf);
1118
1119         if (data->suspend_count++)
1120                 return 0;
1121
1122         spin_lock_irq(&data->txlock);
1123         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1124                 set_bit(BTUSB_SUSPENDING, &data->flags);
1125                 spin_unlock_irq(&data->txlock);
1126         } else {
1127                 spin_unlock_irq(&data->txlock);
1128                 data->suspend_count--;
1129                 return -EBUSY;
1130         }
1131
1132         cancel_work_sync(&data->work);
1133
1134         btusb_stop_traffic(data);
1135         usb_kill_anchored_urbs(&data->tx_anchor);
1136
1137         return 0;
1138 }
1139
1140 static void play_deferred(struct btusb_data *data)
1141 {
1142         struct urb *urb;
1143         int err;
1144
1145         while ((urb = usb_get_from_anchor(&data->deferred))) {
1146                 err = usb_submit_urb(urb, GFP_ATOMIC);
1147                 if (err < 0)
1148                         break;
1149
1150                 data->tx_in_flight++;
1151         }
1152         usb_scuttle_anchored_urbs(&data->deferred);
1153 }
1154
1155 static int btusb_resume(struct usb_interface *intf)
1156 {
1157         struct btusb_data *data = usb_get_intfdata(intf);
1158         struct hci_dev *hdev = data->hdev;
1159         int err = 0;
1160
1161         BT_DBG("intf %p", intf);
1162
1163         if (--data->suspend_count)
1164                 return 0;
1165
1166         if (!test_bit(HCI_RUNNING, &hdev->flags))
1167                 goto done;
1168
1169         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1170                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1171                 if (err < 0) {
1172                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1173                         goto failed;
1174                 }
1175         }
1176
1177         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1178                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1179                 if (err < 0) {
1180                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1181                         goto failed;
1182                 }
1183
1184                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1185         }
1186
1187         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1188                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1189                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1190                 else
1191                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1192         }
1193
1194         spin_lock_irq(&data->txlock);
1195         play_deferred(data);
1196         clear_bit(BTUSB_SUSPENDING, &data->flags);
1197         spin_unlock_irq(&data->txlock);
1198         schedule_work(&data->work);
1199
1200         return 0;
1201
1202 failed:
1203         usb_scuttle_anchored_urbs(&data->deferred);
1204 done:
1205         spin_lock_irq(&data->txlock);
1206         clear_bit(BTUSB_SUSPENDING, &data->flags);
1207         spin_unlock_irq(&data->txlock);
1208
1209         return err;
1210 }
1211 #endif
1212
1213 static struct usb_driver btusb_driver = {
1214         .name           = "btusb",
1215         .probe          = btusb_probe,
1216         .disconnect     = btusb_disconnect,
1217 #ifdef CONFIG_PM
1218         .suspend        = btusb_suspend,
1219         .resume         = btusb_resume,
1220 #endif
1221         .id_table       = btusb_table,
1222         .supports_autosuspend = 1,
1223 };
1224
1225 static int __init btusb_init(void)
1226 {
1227         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1228
1229         return usb_register(&btusb_driver);
1230 }
1231
1232 static void __exit btusb_exit(void)
1233 {
1234         usb_deregister(&btusb_driver);
1235 }
1236
1237 module_init(btusb_init);
1238 module_exit(btusb_exit);
1239
1240 module_param(ignore_dga, bool, 0644);
1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1242
1243 module_param(ignore_csr, bool, 0644);
1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1245
1246 module_param(ignore_sniffer, bool, 0644);
1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1248
1249 module_param(disable_scofix, bool, 0644);
1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1251
1252 module_param(force_scofix, bool, 0644);
1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1254
1255 module_param(reset, bool, 0644);
1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1257
1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1260 MODULE_VERSION(VERSION);
1261 MODULE_LICENSE("GPL");