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         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 123
 124         /* Atheros AR9285 Malbec with sflash firmware */
 125         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 126
 127         /* Atheros 3012 with sflash firmware */
 128         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 129
 130         /* Atheros AR5BBU12 with sflash firmware */
 131         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 132
 133         /* Broadcom BCM2035 */
 134         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 135         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 136         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 137
 138         /* Broadcom BCM2045 */
 139         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 140         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 141
 142         /* IBM/Lenovo ThinkPad with Broadcom chip */
 143         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 144         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 145
 146         /* HP laptop with Broadcom chip */
 147         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 148
 149         /* Dell laptop with Broadcom chip */
 150         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 151
 152         /* Dell Wireless 370 and 410 devices */
 153         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 154         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* Belkin F8T012 and F8T013 devices */
 157         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 158         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 159
 160         /* Asus WL-BTD202 device */
 161         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* Kensington Bluetooth USB adapter */
 164         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166         /* RTX Telecom based adapters with buggy SCO support */
 167         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 168         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 169
 170         /* CONWISE Technology based adapters with buggy SCO support */
 171         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 172
 173         /* Digianswer devices */
 174         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 175         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 176
 177         /* CSR BlueCore Bluetooth Sniffer */
 178         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 179
 180         /* Frontline ComProbe Bluetooth Sniffer */
 181         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 182
 183         { }     /* Terminating entry */
 184 };
 185
 186 #define BTUSB_MAX_ISOC_FRAMES   10
 187
 188 #define BTUSB_INTR_RUNNING      0
 189 #define BTUSB_BULK_RUNNING      1
 190 #define BTUSB_ISOC_RUNNING      2
 191 #define BTUSB_SUSPENDING        3
 192 #define BTUSB_DID_ISO_RESUME    4
 193
 194 struct btusb_data {
 195         struct hci_dev       *hdev;
 196         struct usb_device    *udev;
 197         struct usb_interface *intf;
 198         struct usb_interface *isoc;
 199
 200         spinlock_t lock;
 201
 202         unsigned long flags;
 203
 204         struct work_struct work;
 205         struct work_struct waker;
 206
 207         struct usb_anchor tx_anchor;
 208         struct usb_anchor intr_anchor;
 209         struct usb_anchor bulk_anchor;
 210         struct usb_anchor isoc_anchor;
 211         struct usb_anchor deferred;
 212         int tx_in_flight;
 213         spinlock_t txlock;
 214
 215         struct usb_endpoint_descriptor *intr_ep;
 216         struct usb_endpoint_descriptor *bulk_tx_ep;
 217         struct usb_endpoint_descriptor *bulk_rx_ep;
 218         struct usb_endpoint_descriptor *isoc_tx_ep;
 219         struct usb_endpoint_descriptor *isoc_rx_ep;
 220
 221         __u8 cmdreq_type;
 222
 223         unsigned int sco_num;
 224         int isoc_altsetting;
 225         int suspend_count;
 226 };
 227
 228 static int inc_tx(struct btusb_data *data)
 229 {
 230         unsigned long flags;
 231         int rv;
 232
 233         spin_lock_irqsave(&data->txlock, flags);
 234         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 235         if (!rv)
 236                 data->tx_in_flight++;
 237         spin_unlock_irqrestore(&data->txlock, flags);
 238
 239         return rv;
 240 }
 241
 242 static void btusb_intr_complete(struct urb *urb)
 243 {
 244         struct hci_dev *hdev = urb->context;
 245         struct btusb_data *data = hdev->driver_data;
 246         int err;
 247
 248         BT_DBG("%s urb %p status %d count %d", hdev->name,
 249                                         urb, urb->status, urb->actual_length);
 250
 251         if (!test_bit(HCI_RUNNING, &hdev->flags))
 252                 return;
 253
 254         if (urb->status == 0) {
 255                 hdev->stat.byte_rx += urb->actual_length;
 256
 257                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 258                                                 urb->transfer_buffer,
 259                                                 urb->actual_length) < 0) {
 260                         BT_ERR("%s corrupted event packet", hdev->name);
 261                         hdev->stat.err_rx++;
 262                 }
 263         }
 264
 265         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 266                 return;
 267
 268         usb_mark_last_busy(data->udev);
 269         usb_anchor_urb(urb, &data->intr_anchor);
 270
 271         err = usb_submit_urb(urb, GFP_ATOMIC);
 272         if (err < 0) {
 273                 /* -EPERM: urb is being killed;
 274                  * -ENODEV: device got disconnected */
 275                 if (err != -EPERM && err != -ENODEV)
 276                         BT_ERR("%s urb %p failed to resubmit (%d)",
 277                                                 hdev->name, urb, -err);
 278                 usb_unanchor_urb(urb);
 279         }
 280 }
 281
 282 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 283 {
 284         struct btusb_data *data = hdev->driver_data;
 285         struct urb *urb;
 286         unsigned char *buf;
 287         unsigned int pipe;
 288         int err, size;
 289
 290         BT_DBG("%s", hdev->name);
 291
 292         if (!data->intr_ep)
 293                 return -ENODEV;
 294
 295         urb = usb_alloc_urb(0, mem_flags);
 296         if (!urb)
 297                 return -ENOMEM;
 298
 299         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 300
 301         buf = kmalloc(size, mem_flags);
 302         if (!buf) {
 303                 usb_free_urb(urb);
 304                 return -ENOMEM;
 305         }
 306
 307         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 308
 309         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 310                                                 btusb_intr_complete, hdev,
 311                                                 data->intr_ep->bInterval);
 312
 313         urb->transfer_flags |= URB_FREE_BUFFER;
 314
 315         usb_anchor_urb(urb, &data->intr_anchor);
 316
 317         err = usb_submit_urb(urb, mem_flags);
 318         if (err < 0) {
 319                 BT_ERR("%s urb %p submission failed (%d)",
 320                                                 hdev->name, urb, -err);
 321                 usb_unanchor_urb(urb);
 322         }
 323
 324         usb_free_urb(urb);
 325
 326         return err;
 327 }
 328
 329 static void btusb_bulk_complete(struct urb *urb)
 330 {
 331         struct hci_dev *hdev = urb->context;
 332         struct btusb_data *data = hdev->driver_data;
 333         int err;
 334
 335         BT_DBG("%s urb %p status %d count %d", hdev->name,
 336                                         urb, urb->status, urb->actual_length);
 337
 338         if (!test_bit(HCI_RUNNING, &hdev->flags))
 339                 return;
 340
 341         if (urb->status == 0) {
 342                 hdev->stat.byte_rx += urb->actual_length;
 343
 344                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 345                                                 urb->transfer_buffer,
 346                                                 urb->actual_length) < 0) {
 347                         BT_ERR("%s corrupted ACL packet", hdev->name);
 348                         hdev->stat.err_rx++;
 349                 }
 350         }
 351
 352         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 353                 return;
 354
 355         usb_anchor_urb(urb, &data->bulk_anchor);
 356         usb_mark_last_busy(data->udev);
 357
 358         err = usb_submit_urb(urb, GFP_ATOMIC);
 359         if (err < 0) {
 360                 /* -EPERM: urb is being killed;
 361                  * -ENODEV: device got disconnected */
 362                 if (err != -EPERM && err != -ENODEV)
 363                         BT_ERR("%s urb %p failed to resubmit (%d)",
 364                                                 hdev->name, urb, -err);
 365                 usb_unanchor_urb(urb);
 366         }
 367 }
 368
 369 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 370 {
 371         struct btusb_data *data = hdev->driver_data;
 372         struct urb *urb;
 373         unsigned char *buf;
 374         unsigned int pipe;
 375         int err, size = HCI_MAX_FRAME_SIZE;
 376
 377         BT_DBG("%s", hdev->name);
 378
 379         if (!data->bulk_rx_ep)
 380                 return -ENODEV;
 381
 382         urb = usb_alloc_urb(0, mem_flags);
 383         if (!urb)
 384                 return -ENOMEM;
 385
 386         buf = kmalloc(size, mem_flags);
 387         if (!buf) {
 388                 usb_free_urb(urb);
 389                 return -ENOMEM;
 390         }
 391
 392         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 393
 394         usb_fill_bulk_urb(urb, data->udev, pipe,
 395                                         buf, size, btusb_bulk_complete, hdev);
 396
 397         urb->transfer_flags |= URB_FREE_BUFFER;
 398
 399         usb_mark_last_busy(data->udev);
 400         usb_anchor_urb(urb, &data->bulk_anchor);
 401
 402         err = usb_submit_urb(urb, mem_flags);
 403         if (err < 0) {
 404                 BT_ERR("%s urb %p submission failed (%d)",
 405                                                 hdev->name, urb, -err);
 406                 usb_unanchor_urb(urb);
 407         }
 408
 409         usb_free_urb(urb);
 410
 411         return err;
 412 }
 413
 414 static void btusb_isoc_complete(struct urb *urb)
 415 {
 416         struct hci_dev *hdev = urb->context;
 417         struct btusb_data *data = hdev->driver_data;
 418         int i, err;
 419
 420         BT_DBG("%s urb %p status %d count %d", hdev->name,
 421                                         urb, urb->status, urb->actual_length);
 422
 423         if (!test_bit(HCI_RUNNING, &hdev->flags))
 424                 return;
 425
 426         if (urb->status == 0) {
 427                 for (i = 0; i < urb->number_of_packets; i++) {
 428                         unsigned int offset = urb->iso_frame_desc[i].offset;
 429                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 430
 431                         if (urb->iso_frame_desc[i].status)
 432                                 continue;
 433
 434                         hdev->stat.byte_rx += length;
 435
 436                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 437                                                 urb->transfer_buffer + offset,
 438                                                                 length) < 0) {
 439                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 440                                 hdev->stat.err_rx++;
 441                         }
 442                 }
 443         }
 444
 445         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 446                 return;
 447
 448         usb_anchor_urb(urb, &data->isoc_anchor);
 449
 450         err = usb_submit_urb(urb, GFP_ATOMIC);
 451         if (err < 0) {
 452                 /* -EPERM: urb is being killed;
 453                  * -ENODEV: device got disconnected */
 454                 if (err != -EPERM && err != -ENODEV)
 455                         BT_ERR("%s urb %p failed to resubmit (%d)",
 456                                                 hdev->name, urb, -err);
 457                 usb_unanchor_urb(urb);
 458         }
 459 }
 460
 461 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 462 {
 463         int i, offset = 0;
 464
 465         BT_DBG("len %d mtu %d", len, mtu);
 466
 467         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 468                                         i++, offset += mtu, len -= mtu) {
 469                 urb->iso_frame_desc[i].offset = offset;
 470                 urb->iso_frame_desc[i].length = mtu;
 471         }
 472
 473         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 474                 urb->iso_frame_desc[i].offset = offset;
 475                 urb->iso_frame_desc[i].length = len;
 476                 i++;
 477         }
 478
 479         urb->number_of_packets = i;
 480 }
 481
 482 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 483 {
 484         struct btusb_data *data = hdev->driver_data;
 485         struct urb *urb;
 486         unsigned char *buf;
 487         unsigned int pipe;
 488         int err, size;
 489
 490         BT_DBG("%s", hdev->name);
 491
 492         if (!data->isoc_rx_ep)
 493                 return -ENODEV;
 494
 495         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 496         if (!urb)
 497                 return -ENOMEM;
 498
 499         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 500                                                 BTUSB_MAX_ISOC_FRAMES;
 501
 502         buf = kmalloc(size, mem_flags);
 503         if (!buf) {
 504                 usb_free_urb(urb);
 505                 return -ENOMEM;
 506         }
 507
 508         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 509
 510         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 511                                 hdev, data->isoc_rx_ep->bInterval);
 512
 513         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 514
 515         __fill_isoc_descriptor(urb, size,
 516                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 517
 518         usb_anchor_urb(urb, &data->isoc_anchor);
 519
 520         err = usb_submit_urb(urb, mem_flags);
 521         if (err < 0) {
 522                 BT_ERR("%s urb %p submission failed (%d)",
 523                                                 hdev->name, urb, -err);
 524                 usb_unanchor_urb(urb);
 525         }
 526
 527         usb_free_urb(urb);
 528
 529         return err;
 530 }
 531
 532 static void btusb_tx_complete(struct urb *urb)
 533 {
 534         struct sk_buff *skb = urb->context;
 535         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 536         struct btusb_data *data = hdev->driver_data;
 537
 538         BT_DBG("%s urb %p status %d count %d", hdev->name,
 539                                         urb, urb->status, urb->actual_length);
 540
 541         if (!test_bit(HCI_RUNNING, &hdev->flags))
 542                 goto done;
 543
 544         if (!urb->status)
 545                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 546         else
 547                 hdev->stat.err_tx++;
 548
 549 done:
 550         spin_lock(&data->txlock);
 551         data->tx_in_flight--;
 552         spin_unlock(&data->txlock);
 553
 554         kfree(urb->setup_packet);
 555
 556         kfree_skb(skb);
 557 }
 558
 559 static void btusb_isoc_tx_complete(struct urb *urb)
 560 {
 561         struct sk_buff *skb = urb->context;
 562         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 563
 564         BT_DBG("%s urb %p status %d count %d", hdev->name,
 565                                         urb, urb->status, urb->actual_length);
 566
 567         if (!test_bit(HCI_RUNNING, &hdev->flags))
 568                 goto done;
 569
 570         if (!urb->status)
 571                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 572         else
 573                 hdev->stat.err_tx++;
 574
 575 done:
 576         kfree(urb->setup_packet);
 577
 578         kfree_skb(skb);
 579 }
 580
 581 static int btusb_open(struct hci_dev *hdev)
 582 {
 583         struct btusb_data *data = hdev->driver_data;
 584         int err;
 585
 586         BT_DBG("%s", hdev->name);
 587
 588         err = usb_autopm_get_interface(data->intf);
 589         if (err < 0)
 590                 return err;
 591
 592         data->intf->needs_remote_wakeup = 1;
 593
 594         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 595                 goto done;
 596
 597         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 598                 goto done;
 599
 600         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 601         if (err < 0)
 602                 goto failed;
 603
 604         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 605         if (err < 0) {
 606                 usb_kill_anchored_urbs(&data->intr_anchor);
 607                 goto failed;
 608         }
 609
 610         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 611         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 612
 613 done:
 614         usb_autopm_put_interface(data->intf);
 615         return 0;
 616
 617 failed:
 618         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 619         clear_bit(HCI_RUNNING, &hdev->flags);
 620         usb_autopm_put_interface(data->intf);
 621         return err;
 622 }
 623
 624 static void btusb_stop_traffic(struct btusb_data *data)
 625 {
 626         usb_kill_anchored_urbs(&data->intr_anchor);
 627         usb_kill_anchored_urbs(&data->bulk_anchor);
 628         usb_kill_anchored_urbs(&data->isoc_anchor);
 629 }
 630
 631 static int btusb_close(struct hci_dev *hdev)
 632 {
 633         struct btusb_data *data = hdev->driver_data;
 634         int err;
 635
 636         BT_DBG("%s", hdev->name);
 637
 638         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 639                 return 0;
 640
 641         cancel_work_sync(&data->work);
 642         cancel_work_sync(&data->waker);
 643
 644         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 645         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 646         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 647
 648         btusb_stop_traffic(data);
 649         err = usb_autopm_get_interface(data->intf);
 650         if (err < 0)
 651                 goto failed;
 652
 653         data->intf->needs_remote_wakeup = 0;
 654         usb_autopm_put_interface(data->intf);
 655
 656 failed:
 657         usb_scuttle_anchored_urbs(&data->deferred);
 658         return 0;
 659 }
 660
 661 static int btusb_flush(struct hci_dev *hdev)
 662 {
 663         struct btusb_data *data = hdev->driver_data;
 664
 665         BT_DBG("%s", hdev->name);
 666
 667         usb_kill_anchored_urbs(&data->tx_anchor);
 668
 669         return 0;
 670 }
 671
 672 static int btusb_send_frame(struct sk_buff *skb)
 673 {
 674         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 675         struct btusb_data *data = hdev->driver_data;
 676         struct usb_ctrlrequest *dr;
 677         struct urb *urb;
 678         unsigned int pipe;
 679         int err;
 680
 681         BT_DBG("%s", hdev->name);
 682
 683         if (!test_bit(HCI_RUNNING, &hdev->flags))
 684                 return -EBUSY;
 685
 686         switch (bt_cb(skb)->pkt_type) {
 687         case HCI_COMMAND_PKT:
 688                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 689                 if (!urb)
 690                         return -ENOMEM;
 691
 692                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 693                 if (!dr) {
 694                         usb_free_urb(urb);
 695                         return -ENOMEM;
 696                 }
 697
 698                 dr->bRequestType = data->cmdreq_type;
 699                 dr->bRequest     = 0;
 700                 dr->wIndex       = 0;
 701                 dr->wValue       = 0;
 702                 dr->wLength      = __cpu_to_le16(skb->len);
 703
 704                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 705
 706                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 707                                 skb->data, skb->len, btusb_tx_complete, skb);
 708
 709                 hdev->stat.cmd_tx++;
 710                 break;
 711
 712         case HCI_ACLDATA_PKT:
 713                 if (!data->bulk_tx_ep)
 714                         return -ENODEV;
 715
 716                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 717                 if (!urb)
 718                         return -ENOMEM;
 719
 720                 pipe = usb_sndbulkpipe(data->udev,
 721                                         data->bulk_tx_ep->bEndpointAddress);
 722
 723                 usb_fill_bulk_urb(urb, data->udev, pipe,
 724                                 skb->data, skb->len, btusb_tx_complete, skb);
 725
 726                 hdev->stat.acl_tx++;
 727                 break;
 728
 729         case HCI_SCODATA_PKT:
 730                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 731                         return -ENODEV;
 732
 733                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 734                 if (!urb)
 735                         return -ENOMEM;
 736
 737                 pipe = usb_sndisocpipe(data->udev,
 738                                         data->isoc_tx_ep->bEndpointAddress);
 739
 740                 usb_fill_int_urb(urb, data->udev, pipe,
 741                                 skb->data, skb->len, btusb_isoc_tx_complete,
 742                                 skb, data->isoc_tx_ep->bInterval);
 743
 744                 urb->transfer_flags  = URB_ISO_ASAP;
 745
 746                 __fill_isoc_descriptor(urb, skb->len,
 747                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 748
 749                 hdev->stat.sco_tx++;
 750                 goto skip_waking;
 751
 752         default:
 753                 return -EILSEQ;
 754         }
 755
 756         err = inc_tx(data);
 757         if (err) {
 758                 usb_anchor_urb(urb, &data->deferred);
 759                 schedule_work(&data->waker);
 760                 err = 0;
 761                 goto done;
 762         }
 763
 764 skip_waking:
 765         usb_anchor_urb(urb, &data->tx_anchor);
 766
 767         err = usb_submit_urb(urb, GFP_ATOMIC);
 768         if (err < 0) {
 769                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 770                 kfree(urb->setup_packet);
 771                 usb_unanchor_urb(urb);
 772         } else {
 773                 usb_mark_last_busy(data->udev);
 774         }
 775
 776 done:
 777         usb_free_urb(urb);
 778         return err;
 779 }
 780
 781 static void btusb_destruct(struct hci_dev *hdev)
 782 {
 783         struct btusb_data *data = hdev->driver_data;
 784
 785         BT_DBG("%s", hdev->name);
 786
 787         kfree(data);
 788 }
 789
 790 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 791 {
 792         struct btusb_data *data = hdev->driver_data;
 793
 794         BT_DBG("%s evt %d", hdev->name, evt);
 795
 796         if (hdev->conn_hash.sco_num != data->sco_num) {
 797                 data->sco_num = hdev->conn_hash.sco_num;
 798                 schedule_work(&data->work);
 799         }
 800 }
 801
 802 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 803 {
 804         struct btusb_data *data = hdev->driver_data;
 805         struct usb_interface *intf = data->isoc;
 806         struct usb_endpoint_descriptor *ep_desc;
 807         int i, err;
 808
 809         if (!data->isoc)
 810                 return -ENODEV;
 811
 812         err = usb_set_interface(data->udev, 1, altsetting);
 813         if (err < 0) {
 814                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 815                 return err;
 816         }
 817
 818         data->isoc_altsetting = altsetting;
 819
 820         data->isoc_tx_ep = NULL;
 821         data->isoc_rx_ep = NULL;
 822
 823         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 824                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 825
 826                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 827                         data->isoc_tx_ep = ep_desc;
 828                         continue;
 829                 }
 830
 831                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 832                         data->isoc_rx_ep = ep_desc;
 833                         continue;
 834                 }
 835         }
 836
 837         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 838                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 839                 return -ENODEV;
 840         }
 841
 842         return 0;
 843 }
 844
 845 static void btusb_work(struct work_struct *work)
 846 {
 847         struct btusb_data *data = container_of(work, struct btusb_data, work);
 848         struct hci_dev *hdev = data->hdev;
 849         int err;
 850
 851         if (hdev->conn_hash.sco_num > 0) {
 852                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 853                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 854                         if (err < 0) {
 855                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 856                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 857                                 return;
 858                         }
 859
 860                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 861                 }
 862                 if (data->isoc_altsetting != 2) {
 863                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 864                         usb_kill_anchored_urbs(&data->isoc_anchor);
 865
 866                         if (__set_isoc_interface(hdev, 2) < 0)
 867                                 return;
 868                 }
 869
 870                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 871                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 872                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 873                         else
 874                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 875                 }
 876         } else {
 877                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 878                 usb_kill_anchored_urbs(&data->isoc_anchor);
 879
 880                 __set_isoc_interface(hdev, 0);
 881                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 882                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 883         }
 884 }
 885
 886 static void btusb_waker(struct work_struct *work)
 887 {
 888         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 889         int err;
 890
 891         err = usb_autopm_get_interface(data->intf);
 892         if (err < 0)
 893                 return;
 894
 895         usb_autopm_put_interface(data->intf);
 896 }
 897
 898 static int btusb_probe(struct usb_interface *intf,
 899                                 const struct usb_device_id *id)
 900 {
 901         struct usb_endpoint_descriptor *ep_desc;
 902         struct btusb_data *data;
 903         struct hci_dev *hdev;
 904         int i, err;
 905
 906         BT_DBG("intf %p id %p", intf, id);
 907
 908         /* interface numbers are hardcoded in the spec */
 909         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 910                 return -ENODEV;
 911
 912         if (!id->driver_info) {
 913                 const struct usb_device_id *match;
 914                 match = usb_match_id(intf, blacklist_table);
 915                 if (match)
 916                         id = match;
 917         }
 918
 919         if (id->driver_info == BTUSB_IGNORE)
 920                 return -ENODEV;
 921
 922         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 923                 return -ENODEV;
 924
 925         if (ignore_csr && id->driver_info & BTUSB_CSR)
 926                 return -ENODEV;
 927
 928         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 929                 return -ENODEV;
 930
 931         if (id->driver_info & BTUSB_ATH3012) {
 932                 struct usb_device *udev = interface_to_usbdev(intf);
 933
 934                 /* Old firmware would otherwise let ath3k driver load
 935                  * patch and sysconfig files */
 936                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 937                         return -ENODEV;
 938         }
 939
 940         data = kzalloc(sizeof(*data), GFP_KERNEL);
 941         if (!data)
 942                 return -ENOMEM;
 943
 944         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 945                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 946
 947                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 948                         data->intr_ep = ep_desc;
 949                         continue;
 950                 }
 951
 952                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 953                         data->bulk_tx_ep = ep_desc;
 954                         continue;
 955                 }
 956
 957                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 958                         data->bulk_rx_ep = ep_desc;
 959                         continue;
 960                 }
 961         }
 962
 963         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 964                 kfree(data);
 965                 return -ENODEV;
 966         }
 967
 968         data->cmdreq_type = USB_TYPE_CLASS;
 969
 970         data->udev = interface_to_usbdev(intf);
 971         data->intf = intf;
 972
 973         spin_lock_init(&data->lock);
 974
 975         INIT_WORK(&data->work, btusb_work);
 976         INIT_WORK(&data->waker, btusb_waker);
 977         spin_lock_init(&data->txlock);
 978
 979         init_usb_anchor(&data->tx_anchor);
 980         init_usb_anchor(&data->intr_anchor);
 981         init_usb_anchor(&data->bulk_anchor);
 982         init_usb_anchor(&data->isoc_anchor);
 983         init_usb_anchor(&data->deferred);
 984
 985         hdev = hci_alloc_dev();
 986         if (!hdev) {
 987                 kfree(data);
 988                 return -ENOMEM;
 989         }
 990
 991         hdev->bus = HCI_USB;
 992         hdev->driver_data = data;
 993
 994         data->hdev = hdev;
 995
 996         SET_HCIDEV_DEV(hdev, &intf->dev);
 997
 998         hdev->open     = btusb_open;
 999         hdev->close    = btusb_close;
1000         hdev->flush    = btusb_flush;
1001         hdev->send     = btusb_send_frame;
1002         hdev->destruct = btusb_destruct;
1003         hdev->notify   = btusb_notify;
1004
1005         hdev->owner = THIS_MODULE;
1006
1007         /* Interface numbers are hardcoded in the specification */
1008         data->isoc = usb_ifnum_to_if(data->udev, 1);
1009
1010         if (!reset)
1011                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1012
1013         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1014                 if (!disable_scofix)
1015                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1016         }
1017
1018         if (id->driver_info & BTUSB_BROKEN_ISOC)
1019                 data->isoc = NULL;
1020
1021         if (id->driver_info & BTUSB_DIGIANSWER) {
1022                 data->cmdreq_type = USB_TYPE_VENDOR;
1023                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1024         }
1025
1026         if (id->driver_info & BTUSB_CSR) {
1027                 struct usb_device *udev = data->udev;
1028
1029                 /* Old firmware would otherwise execute USB reset */
1030                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1031                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032         }
1033
1034         if (id->driver_info & BTUSB_SNIFFER) {
1035                 struct usb_device *udev = data->udev;
1036
1037                 /* New sniffer firmware has crippled HCI interface */
1038                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1039                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1040
1041                 data->isoc = NULL;
1042         }
1043
1044         if (id->driver_info & BTUSB_BCM92035) {
1045                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1046                 struct sk_buff *skb;
1047
1048                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1049                 if (skb) {
1050                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1051                         skb_queue_tail(&hdev->driver_init, skb);
1052                 }
1053         }
1054
1055         if (data->isoc) {
1056                 err = usb_driver_claim_interface(&btusb_driver,
1057                                                         data->isoc, data);
1058                 if (err < 0) {
1059                         hci_free_dev(hdev);
1060                         kfree(data);
1061                         return err;
1062                 }
1063         }
1064
1065         err = hci_register_dev(hdev);
1066         if (err < 0) {
1067                 hci_free_dev(hdev);
1068                 kfree(data);
1069                 return err;
1070         }
1071
1072         usb_set_intfdata(intf, data);
1073
1074         return 0;
1075 }
1076
1077 static void btusb_disconnect(struct usb_interface *intf)
1078 {
1079         struct btusb_data *data = usb_get_intfdata(intf);
1080         struct hci_dev *hdev;
1081
1082         BT_DBG("intf %p", intf);
1083
1084         if (!data)
1085                 return;
1086
1087         hdev = data->hdev;
1088
1089         __hci_dev_hold(hdev);
1090
1091         usb_set_intfdata(data->intf, NULL);
1092
1093         if (data->isoc)
1094                 usb_set_intfdata(data->isoc, NULL);
1095
1096         hci_unregister_dev(hdev);
1097
1098         if (intf == data->isoc)
1099                 usb_driver_release_interface(&btusb_driver, data->intf);
1100         else if (data->isoc)
1101                 usb_driver_release_interface(&btusb_driver, data->isoc);
1102
1103         __hci_dev_put(hdev);
1104
1105         hci_free_dev(hdev);
1106 }
1107
1108 #ifdef CONFIG_PM
1109 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1110 {
1111         struct btusb_data *data = usb_get_intfdata(intf);
1112
1113         BT_DBG("intf %p", intf);
1114
1115         if (data->suspend_count++)
1116                 return 0;
1117
1118         spin_lock_irq(&data->txlock);
1119         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1120                 set_bit(BTUSB_SUSPENDING, &data->flags);
1121                 spin_unlock_irq(&data->txlock);
1122         } else {
1123                 spin_unlock_irq(&data->txlock);
1124                 data->suspend_count--;
1125                 return -EBUSY;
1126         }
1127
1128         cancel_work_sync(&data->work);
1129
1130         btusb_stop_traffic(data);
1131         usb_kill_anchored_urbs(&data->tx_anchor);
1132
1133         return 0;
1134 }
1135
1136 static void play_deferred(struct btusb_data *data)
1137 {
1138         struct urb *urb;
1139         int err;
1140
1141         while ((urb = usb_get_from_anchor(&data->deferred))) {
1142                 err = usb_submit_urb(urb, GFP_ATOMIC);
1143                 if (err < 0)
1144                         break;
1145
1146                 data->tx_in_flight++;
1147         }
1148         usb_scuttle_anchored_urbs(&data->deferred);
1149 }
1150
1151 static int btusb_resume(struct usb_interface *intf)
1152 {
1153         struct btusb_data *data = usb_get_intfdata(intf);
1154         struct hci_dev *hdev = data->hdev;
1155         int err = 0;
1156
1157         BT_DBG("intf %p", intf);
1158
1159         if (--data->suspend_count)
1160                 return 0;
1161
1162         if (!test_bit(HCI_RUNNING, &hdev->flags))
1163                 goto done;
1164
1165         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1166                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1167                 if (err < 0) {
1168                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1169                         goto failed;
1170                 }
1171         }
1172
1173         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1174                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1175                 if (err < 0) {
1176                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1177                         goto failed;
1178                 }
1179
1180                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1181         }
1182
1183         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1184                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1185                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1186                 else
1187                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1188         }
1189
1190         spin_lock_irq(&data->txlock);
1191         play_deferred(data);
1192         clear_bit(BTUSB_SUSPENDING, &data->flags);
1193         spin_unlock_irq(&data->txlock);
1194         schedule_work(&data->work);
1195
1196         return 0;
1197
1198 failed:
1199         usb_scuttle_anchored_urbs(&data->deferred);
1200 done:
1201         spin_lock_irq(&data->txlock);
1202         clear_bit(BTUSB_SUSPENDING, &data->flags);
1203         spin_unlock_irq(&data->txlock);
1204
1205         return err;
1206 }
1207 #endif
1208
1209 static struct usb_driver btusb_driver = {
1210         .name           = "btusb",
1211         .probe          = btusb_probe,
1212         .disconnect     = btusb_disconnect,
1213 #ifdef CONFIG_PM
1214         .suspend        = btusb_suspend,
1215         .resume         = btusb_resume,
1216 #endif
1217         .id_table       = btusb_table,
1218         .supports_autosuspend = 1,
1219 };
1220
1221 static int __init btusb_init(void)
1222 {
1223         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1224
1225         return usb_register(&btusb_driver);
1226 }
1227
1228 static void __exit btusb_exit(void)
1229 {
1230         usb_deregister(&btusb_driver);
1231 }
1232
1233 module_init(btusb_init);
1234 module_exit(btusb_exit);
1235
1236 module_param(ignore_dga, bool, 0644);
1237 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1238
1239 module_param(ignore_csr, bool, 0644);
1240 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1241
1242 module_param(ignore_sniffer, bool, 0644);
1243 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1244
1245 module_param(disable_scofix, bool, 0644);
1246 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1247
1248 module_param(force_scofix, bool, 0644);
1249 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1250
1251 module_param(reset, bool, 0644);
1252 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1253
1254 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1255 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1256 MODULE_VERSION(VERSION);
1257 MODULE_LICENSE("GPL");