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