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
  58 static struct usb_device_id btusb_table[] = {
  59         /* Generic Bluetooth USB device */
  60         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  61
  62         /* Apple MacBookPro 7,1 */
  63         { USB_DEVICE(0x05ac, 0x8213) },
  64
  65         /* Apple iMac11,1 */
  66         { USB_DEVICE(0x05ac, 0x8215) },
  67
  68         /* Apple MacBookPro6,2 */
  69         { USB_DEVICE(0x05ac, 0x8218) },
  70
  71         /* Apple MacBookAir3,1, MacBookAir3,2 */
  72         { USB_DEVICE(0x05ac, 0x821b) },
  73
  74         /* Apple MacBookPro8,2 */
  75         { USB_DEVICE(0x05ac, 0x821a) },
  76
  77         /* AVM BlueFRITZ! USB v2.0 */
  78         { USB_DEVICE(0x057c, 0x3800) },
  79
  80         /* Bluetooth Ultraport Module from IBM */
  81         { USB_DEVICE(0x04bf, 0x030a) },
  82
  83         /* ALPS Modules with non-standard id */
  84         { USB_DEVICE(0x044e, 0x3001) },
  85         { USB_DEVICE(0x044e, 0x3002) },
  86
  87         /* Ericsson with non-standard id */
  88         { USB_DEVICE(0x0bdb, 0x1002) },
  89
  90         /* Canyon CN-BTU1 with HID interfaces */
  91         { USB_DEVICE(0x0c10, 0x0000) },
  92
  93         { }     /* Terminating entry */
  94 };
  95
  96 MODULE_DEVICE_TABLE(usb, btusb_table);
  97
  98 static struct usb_device_id blacklist_table[] = {
  99         /* CSR BlueCore devices */
 100         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 101
 102         /* Broadcom BCM2033 without firmware */
 103         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 104
 105         /* Atheros 3011 with sflash firmware */
 106         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 107
 108         /* Atheros AR9285 Malbec with sflash firmware */
 109         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 110
 111         /* Atheros 3012 with sflash firmware */
 112         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE },
 113
 114         /* Atheros AR5BBU12 with sflash firmware */
 115         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 116
 117         /* Broadcom BCM2035 */
 118         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 119         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 120         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 121
 122         /* Broadcom BCM2045 */
 123         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 124         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 125
 126         /* IBM/Lenovo ThinkPad with Broadcom chip */
 127         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 128         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 129
 130         /* HP laptop with Broadcom chip */
 131         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 132
 133         /* Dell laptop with Broadcom chip */
 134         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 135
 136         /* Dell Wireless 370 and 410 devices */
 137         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 138         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 139
 140         /* Belkin F8T012 and F8T013 devices */
 141         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 142         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 143
 144         /* Asus WL-BTD202 device */
 145         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 146
 147         /* Kensington Bluetooth USB adapter */
 148         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 149
 150         /* RTX Telecom based adapters with buggy SCO support */
 151         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 152         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 153
 154         /* CONWISE Technology based adapters with buggy SCO support */
 155         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 156
 157         /* Digianswer devices */
 158         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 159         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 160
 161         /* CSR BlueCore Bluetooth Sniffer */
 162         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 163
 164         /* Frontline ComProbe Bluetooth Sniffer */
 165         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 166
 167         { }     /* Terminating entry */
 168 };
 169
 170 #define BTUSB_MAX_ISOC_FRAMES   10
 171
 172 #define BTUSB_INTR_RUNNING      0
 173 #define BTUSB_BULK_RUNNING      1
 174 #define BTUSB_ISOC_RUNNING      2
 175 #define BTUSB_SUSPENDING        3
 176 #define BTUSB_DID_ISO_RESUME    4
 177
 178 struct btusb_data {
 179         struct hci_dev       *hdev;
 180         struct usb_device    *udev;
 181         struct usb_interface *intf;
 182         struct usb_interface *isoc;
 183
 184         spinlock_t lock;
 185
 186         unsigned long flags;
 187
 188         struct work_struct work;
 189         struct work_struct waker;
 190
 191         struct usb_anchor tx_anchor;
 192         struct usb_anchor intr_anchor;
 193         struct usb_anchor bulk_anchor;
 194         struct usb_anchor isoc_anchor;
 195         struct usb_anchor deferred;
 196         int tx_in_flight;
 197         spinlock_t txlock;
 198
 199         struct usb_endpoint_descriptor *intr_ep;
 200         struct usb_endpoint_descriptor *bulk_tx_ep;
 201         struct usb_endpoint_descriptor *bulk_rx_ep;
 202         struct usb_endpoint_descriptor *isoc_tx_ep;
 203         struct usb_endpoint_descriptor *isoc_rx_ep;
 204
 205         __u8 cmdreq_type;
 206
 207         unsigned int sco_num;
 208         int isoc_altsetting;
 209         int suspend_count;
 210 };
 211
 212 static int inc_tx(struct btusb_data *data)
 213 {
 214         unsigned long flags;
 215         int rv;
 216
 217         spin_lock_irqsave(&data->txlock, flags);
 218         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 219         if (!rv)
 220                 data->tx_in_flight++;
 221         spin_unlock_irqrestore(&data->txlock, flags);
 222
 223         return rv;
 224 }
 225
 226 static void btusb_intr_complete(struct urb *urb)
 227 {
 228         struct hci_dev *hdev = urb->context;
 229         struct btusb_data *data = hdev->driver_data;
 230         int err;
 231
 232         BT_DBG("%s urb %p status %d count %d", hdev->name,
 233                                         urb, urb->status, urb->actual_length);
 234
 235         if (!test_bit(HCI_RUNNING, &hdev->flags))
 236                 return;
 237
 238         if (urb->status == 0) {
 239                 hdev->stat.byte_rx += urb->actual_length;
 240
 241                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 242                                                 urb->transfer_buffer,
 243                                                 urb->actual_length) < 0) {
 244                         BT_ERR("%s corrupted event packet", hdev->name);
 245                         hdev->stat.err_rx++;
 246                 }
 247         }
 248
 249         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 250                 return;
 251
 252         usb_mark_last_busy(data->udev);
 253         usb_anchor_urb(urb, &data->intr_anchor);
 254
 255         err = usb_submit_urb(urb, GFP_ATOMIC);
 256         if (err < 0) {
 257                 if (err != -EPERM)
 258                         BT_ERR("%s urb %p failed to resubmit (%d)",
 259                                                 hdev->name, urb, -err);
 260                 usb_unanchor_urb(urb);
 261         }
 262 }
 263
 264 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 265 {
 266         struct btusb_data *data = hdev->driver_data;
 267         struct urb *urb;
 268         unsigned char *buf;
 269         unsigned int pipe;
 270         int err, size;
 271
 272         BT_DBG("%s", hdev->name);
 273
 274         if (!data->intr_ep)
 275                 return -ENODEV;
 276
 277         urb = usb_alloc_urb(0, mem_flags);
 278         if (!urb)
 279                 return -ENOMEM;
 280
 281         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 282
 283         buf = kmalloc(size, mem_flags);
 284         if (!buf) {
 285                 usb_free_urb(urb);
 286                 return -ENOMEM;
 287         }
 288
 289         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 290
 291         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 292                                                 btusb_intr_complete, hdev,
 293                                                 data->intr_ep->bInterval);
 294
 295         urb->transfer_flags |= URB_FREE_BUFFER;
 296
 297         usb_anchor_urb(urb, &data->intr_anchor);
 298
 299         err = usb_submit_urb(urb, mem_flags);
 300         if (err < 0) {
 301                 BT_ERR("%s urb %p submission failed (%d)",
 302                                                 hdev->name, urb, -err);
 303                 usb_unanchor_urb(urb);
 304         }
 305
 306         usb_free_urb(urb);
 307
 308         return err;
 309 }
 310
 311 static void btusb_bulk_complete(struct urb *urb)
 312 {
 313         struct hci_dev *hdev = urb->context;
 314         struct btusb_data *data = hdev->driver_data;
 315         int err;
 316
 317         BT_DBG("%s urb %p status %d count %d", hdev->name,
 318                                         urb, urb->status, urb->actual_length);
 319
 320         if (!test_bit(HCI_RUNNING, &hdev->flags))
 321                 return;
 322
 323         if (urb->status == 0) {
 324                 hdev->stat.byte_rx += urb->actual_length;
 325
 326                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 327                                                 urb->transfer_buffer,
 328                                                 urb->actual_length) < 0) {
 329                         BT_ERR("%s corrupted ACL packet", hdev->name);
 330                         hdev->stat.err_rx++;
 331                 }
 332         }
 333
 334         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 335                 return;
 336
 337         usb_anchor_urb(urb, &data->bulk_anchor);
 338         usb_mark_last_busy(data->udev);
 339
 340         err = usb_submit_urb(urb, GFP_ATOMIC);
 341         if (err < 0) {
 342                 if (err != -EPERM)
 343                         BT_ERR("%s urb %p failed to resubmit (%d)",
 344                                                 hdev->name, urb, -err);
 345                 usb_unanchor_urb(urb);
 346         }
 347 }
 348
 349 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 350 {
 351         struct btusb_data *data = hdev->driver_data;
 352         struct urb *urb;
 353         unsigned char *buf;
 354         unsigned int pipe;
 355         int err, size = HCI_MAX_FRAME_SIZE;
 356
 357         BT_DBG("%s", hdev->name);
 358
 359         if (!data->bulk_rx_ep)
 360                 return -ENODEV;
 361
 362         urb = usb_alloc_urb(0, mem_flags);
 363         if (!urb)
 364                 return -ENOMEM;
 365
 366         buf = kmalloc(size, mem_flags);
 367         if (!buf) {
 368                 usb_free_urb(urb);
 369                 return -ENOMEM;
 370         }
 371
 372         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 373
 374         usb_fill_bulk_urb(urb, data->udev, pipe,
 375                                         buf, size, btusb_bulk_complete, hdev);
 376
 377         urb->transfer_flags |= URB_FREE_BUFFER;
 378
 379         usb_mark_last_busy(data->udev);
 380         usb_anchor_urb(urb, &data->bulk_anchor);
 381
 382         err = usb_submit_urb(urb, mem_flags);
 383         if (err < 0) {
 384                 BT_ERR("%s urb %p submission failed (%d)",
 385                                                 hdev->name, urb, -err);
 386                 usb_unanchor_urb(urb);
 387         }
 388
 389         usb_free_urb(urb);
 390
 391         return err;
 392 }
 393
 394 static void btusb_isoc_complete(struct urb *urb)
 395 {
 396         struct hci_dev *hdev = urb->context;
 397         struct btusb_data *data = hdev->driver_data;
 398         int i, err;
 399
 400         BT_DBG("%s urb %p status %d count %d", hdev->name,
 401                                         urb, urb->status, urb->actual_length);
 402
 403         if (!test_bit(HCI_RUNNING, &hdev->flags))
 404                 return;
 405
 406         if (urb->status == 0) {
 407                 for (i = 0; i < urb->number_of_packets; i++) {
 408                         unsigned int offset = urb->iso_frame_desc[i].offset;
 409                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 410
 411                         if (urb->iso_frame_desc[i].status)
 412                                 continue;
 413
 414                         hdev->stat.byte_rx += length;
 415
 416                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 417                                                 urb->transfer_buffer + offset,
 418                                                                 length) < 0) {
 419                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 420                                 hdev->stat.err_rx++;
 421                         }
 422                 }
 423         }
 424
 425         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 426                 return;
 427
 428         usb_anchor_urb(urb, &data->isoc_anchor);
 429
 430         err = usb_submit_urb(urb, GFP_ATOMIC);
 431         if (err < 0) {
 432                 if (err != -EPERM)
 433                         BT_ERR("%s urb %p failed to resubmit (%d)",
 434                                                 hdev->name, urb, -err);
 435                 usb_unanchor_urb(urb);
 436         }
 437 }
 438
 439 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 440 {
 441         int i, offset = 0;
 442
 443         BT_DBG("len %d mtu %d", len, mtu);
 444
 445         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 446                                         i++, offset += mtu, len -= mtu) {
 447                 urb->iso_frame_desc[i].offset = offset;
 448                 urb->iso_frame_desc[i].length = mtu;
 449         }
 450
 451         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 452                 urb->iso_frame_desc[i].offset = offset;
 453                 urb->iso_frame_desc[i].length = len;
 454                 i++;
 455         }
 456
 457         urb->number_of_packets = i;
 458 }
 459
 460 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 461 {
 462         struct btusb_data *data = hdev->driver_data;
 463         struct urb *urb;
 464         unsigned char *buf;
 465         unsigned int pipe;
 466         int err, size;
 467
 468         BT_DBG("%s", hdev->name);
 469
 470         if (!data->isoc_rx_ep)
 471                 return -ENODEV;
 472
 473         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 474         if (!urb)
 475                 return -ENOMEM;
 476
 477         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 478                                                 BTUSB_MAX_ISOC_FRAMES;
 479
 480         buf = kmalloc(size, mem_flags);
 481         if (!buf) {
 482                 usb_free_urb(urb);
 483                 return -ENOMEM;
 484         }
 485
 486         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 487
 488         urb->dev      = data->udev;
 489         urb->pipe     = pipe;
 490         urb->context  = hdev;
 491         urb->complete = btusb_isoc_complete;
 492         urb->interval = data->isoc_rx_ep->bInterval;
 493
 494         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 495         urb->transfer_buffer = buf;
 496         urb->transfer_buffer_length = size;
 497
 498         __fill_isoc_descriptor(urb, size,
 499                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 500
 501         usb_anchor_urb(urb, &data->isoc_anchor);
 502
 503         err = usb_submit_urb(urb, mem_flags);
 504         if (err < 0) {
 505                 BT_ERR("%s urb %p submission failed (%d)",
 506                                                 hdev->name, urb, -err);
 507                 usb_unanchor_urb(urb);
 508         }
 509
 510         usb_free_urb(urb);
 511
 512         return err;
 513 }
 514
 515 static void btusb_tx_complete(struct urb *urb)
 516 {
 517         struct sk_buff *skb = urb->context;
 518         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 519         struct btusb_data *data = hdev->driver_data;
 520
 521         BT_DBG("%s urb %p status %d count %d", hdev->name,
 522                                         urb, urb->status, urb->actual_length);
 523
 524         if (!test_bit(HCI_RUNNING, &hdev->flags))
 525                 goto done;
 526
 527         if (!urb->status)
 528                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 529         else
 530                 hdev->stat.err_tx++;
 531
 532 done:
 533         spin_lock(&data->txlock);
 534         data->tx_in_flight--;
 535         spin_unlock(&data->txlock);
 536
 537         kfree(urb->setup_packet);
 538
 539         kfree_skb(skb);
 540 }
 541
 542 static void btusb_isoc_tx_complete(struct urb *urb)
 543 {
 544         struct sk_buff *skb = urb->context;
 545         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 546
 547         BT_DBG("%s urb %p status %d count %d", hdev->name,
 548                                         urb, urb->status, urb->actual_length);
 549
 550         if (!test_bit(HCI_RUNNING, &hdev->flags))
 551                 goto done;
 552
 553         if (!urb->status)
 554                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 555         else
 556                 hdev->stat.err_tx++;
 557
 558 done:
 559         kfree(urb->setup_packet);
 560
 561         kfree_skb(skb);
 562 }
 563
 564 static int btusb_open(struct hci_dev *hdev)
 565 {
 566         struct btusb_data *data = hdev->driver_data;
 567         int err;
 568
 569         BT_DBG("%s", hdev->name);
 570
 571         err = usb_autopm_get_interface(data->intf);
 572         if (err < 0)
 573                 return err;
 574
 575         data->intf->needs_remote_wakeup = 1;
 576
 577         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 578                 goto done;
 579
 580         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 581                 goto done;
 582
 583         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 584         if (err < 0)
 585                 goto failed;
 586
 587         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 588         if (err < 0) {
 589                 usb_kill_anchored_urbs(&data->intr_anchor);
 590                 goto failed;
 591         }
 592
 593         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 594         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 595
 596 done:
 597         usb_autopm_put_interface(data->intf);
 598         return 0;
 599
 600 failed:
 601         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 602         clear_bit(HCI_RUNNING, &hdev->flags);
 603         usb_autopm_put_interface(data->intf);
 604         return err;
 605 }
 606
 607 static void btusb_stop_traffic(struct btusb_data *data)
 608 {
 609         usb_kill_anchored_urbs(&data->intr_anchor);
 610         usb_kill_anchored_urbs(&data->bulk_anchor);
 611         usb_kill_anchored_urbs(&data->isoc_anchor);
 612 }
 613
 614 static int btusb_close(struct hci_dev *hdev)
 615 {
 616         struct btusb_data *data = hdev->driver_data;
 617         int err;
 618
 619         BT_DBG("%s", hdev->name);
 620
 621         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 622                 return 0;
 623
 624         cancel_work_sync(&data->work);
 625         cancel_work_sync(&data->waker);
 626
 627         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 628         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 629         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 630
 631         btusb_stop_traffic(data);
 632         err = usb_autopm_get_interface(data->intf);
 633         if (err < 0)
 634                 goto failed;
 635
 636         data->intf->needs_remote_wakeup = 0;
 637         usb_autopm_put_interface(data->intf);
 638
 639 failed:
 640         usb_scuttle_anchored_urbs(&data->deferred);
 641         return 0;
 642 }
 643
 644 static int btusb_flush(struct hci_dev *hdev)
 645 {
 646         struct btusb_data *data = hdev->driver_data;
 647
 648         BT_DBG("%s", hdev->name);
 649
 650         usb_kill_anchored_urbs(&data->tx_anchor);
 651
 652         return 0;
 653 }
 654
 655 static int btusb_send_frame(struct sk_buff *skb)
 656 {
 657         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 658         struct btusb_data *data = hdev->driver_data;
 659         struct usb_ctrlrequest *dr;
 660         struct urb *urb;
 661         unsigned int pipe;
 662         int err;
 663
 664         BT_DBG("%s", hdev->name);
 665
 666         if (!test_bit(HCI_RUNNING, &hdev->flags))
 667                 return -EBUSY;
 668
 669         switch (bt_cb(skb)->pkt_type) {
 670         case HCI_COMMAND_PKT:
 671                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 672                 if (!urb)
 673                         return -ENOMEM;
 674
 675                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 676                 if (!dr) {
 677                         usb_free_urb(urb);
 678                         return -ENOMEM;
 679                 }
 680
 681                 dr->bRequestType = data->cmdreq_type;
 682                 dr->bRequest     = 0;
 683                 dr->wIndex       = 0;
 684                 dr->wValue       = 0;
 685                 dr->wLength      = __cpu_to_le16(skb->len);
 686
 687                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 688
 689                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 690                                 skb->data, skb->len, btusb_tx_complete, skb);
 691
 692                 hdev->stat.cmd_tx++;
 693                 break;
 694
 695         case HCI_ACLDATA_PKT:
 696                 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1)
 697                         return -ENODEV;
 698
 699                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 700                 if (!urb)
 701                         return -ENOMEM;
 702
 703                 pipe = usb_sndbulkpipe(data->udev,
 704                                         data->bulk_tx_ep->bEndpointAddress);
 705
 706                 usb_fill_bulk_urb(urb, data->udev, pipe,
 707                                 skb->data, skb->len, btusb_tx_complete, skb);
 708
 709                 hdev->stat.acl_tx++;
 710                 break;
 711
 712         case HCI_SCODATA_PKT:
 713                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 714                         return -ENODEV;
 715
 716                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 717                 if (!urb)
 718                         return -ENOMEM;
 719
 720                 pipe = usb_sndisocpipe(data->udev,
 721                                         data->isoc_tx_ep->bEndpointAddress);
 722
 723                 usb_fill_int_urb(urb, data->udev, pipe,
 724                                 skb->data, skb->len, btusb_isoc_tx_complete,
 725                                 skb, data->isoc_tx_ep->bInterval);
 726
 727                 urb->transfer_flags  = URB_ISO_ASAP;
 728
 729                 __fill_isoc_descriptor(urb, skb->len,
 730                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 731
 732                 hdev->stat.sco_tx++;
 733                 goto skip_waking;
 734
 735         default:
 736                 return -EILSEQ;
 737         }
 738
 739         err = inc_tx(data);
 740         if (err) {
 741                 usb_anchor_urb(urb, &data->deferred);
 742                 schedule_work(&data->waker);
 743                 err = 0;
 744                 goto done;
 745         }
 746
 747 skip_waking:
 748         usb_anchor_urb(urb, &data->tx_anchor);
 749
 750         err = usb_submit_urb(urb, GFP_ATOMIC);
 751         if (err < 0) {
 752                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 753                 kfree(urb->setup_packet);
 754                 usb_unanchor_urb(urb);
 755         } else {
 756                 usb_mark_last_busy(data->udev);
 757         }
 758
 759         usb_free_urb(urb);
 760
 761 done:
 762         return err;
 763 }
 764
 765 static void btusb_destruct(struct hci_dev *hdev)
 766 {
 767         struct btusb_data *data = hdev->driver_data;
 768
 769         BT_DBG("%s", hdev->name);
 770
 771         kfree(data);
 772 }
 773
 774 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 775 {
 776         struct btusb_data *data = hdev->driver_data;
 777
 778         BT_DBG("%s evt %d", hdev->name, evt);
 779
 780         if (hdev->conn_hash.sco_num != data->sco_num) {
 781                 data->sco_num = hdev->conn_hash.sco_num;
 782                 schedule_work(&data->work);
 783         }
 784 }
 785
 786 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 787 {
 788         struct btusb_data *data = hdev->driver_data;
 789         struct usb_interface *intf = data->isoc;
 790         struct usb_endpoint_descriptor *ep_desc;
 791         int i, err;
 792
 793         if (!data->isoc)
 794                 return -ENODEV;
 795
 796         err = usb_set_interface(data->udev, 1, altsetting);
 797         if (err < 0) {
 798                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 799                 return err;
 800         }
 801
 802         data->isoc_altsetting = altsetting;
 803
 804         data->isoc_tx_ep = NULL;
 805         data->isoc_rx_ep = NULL;
 806
 807         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 808                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 809
 810                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 811                         data->isoc_tx_ep = ep_desc;
 812                         continue;
 813                 }
 814
 815                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 816                         data->isoc_rx_ep = ep_desc;
 817                         continue;
 818                 }
 819         }
 820
 821         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 822                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 823                 return -ENODEV;
 824         }
 825
 826         return 0;
 827 }
 828
 829 static void btusb_work(struct work_struct *work)
 830 {
 831         struct btusb_data *data = container_of(work, struct btusb_data, work);
 832         struct hci_dev *hdev = data->hdev;
 833         int err;
 834
 835         if (hdev->conn_hash.sco_num > 0) {
 836                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 837                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 838                         if (err < 0) {
 839                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 840                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 841                                 return;
 842                         }
 843
 844                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 845                 }
 846                 if (data->isoc_altsetting != 2) {
 847                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 848                         usb_kill_anchored_urbs(&data->isoc_anchor);
 849
 850                         if (__set_isoc_interface(hdev, 2) < 0)
 851                                 return;
 852                 }
 853
 854                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 855                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 856                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 857                         else
 858                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 859                 }
 860         } else {
 861                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 862                 usb_kill_anchored_urbs(&data->isoc_anchor);
 863
 864                 __set_isoc_interface(hdev, 0);
 865                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 866                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 867         }
 868 }
 869
 870 static void btusb_waker(struct work_struct *work)
 871 {
 872         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 873         int err;
 874
 875         err = usb_autopm_get_interface(data->intf);
 876         if (err < 0)
 877                 return;
 878
 879         usb_autopm_put_interface(data->intf);
 880 }
 881
 882 static int btusb_probe(struct usb_interface *intf,
 883                                 const struct usb_device_id *id)
 884 {
 885         struct usb_endpoint_descriptor *ep_desc;
 886         struct btusb_data *data;
 887         struct hci_dev *hdev;
 888         int i, err;
 889
 890         BT_DBG("intf %p id %p", intf, id);
 891
 892         /* interface numbers are hardcoded in the spec */
 893         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 894                 return -ENODEV;
 895
 896         if (!id->driver_info) {
 897                 const struct usb_device_id *match;
 898                 match = usb_match_id(intf, blacklist_table);
 899                 if (match)
 900                         id = match;
 901         }
 902
 903         if (id->driver_info == BTUSB_IGNORE)
 904                 return -ENODEV;
 905
 906         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 907                 return -ENODEV;
 908
 909         if (ignore_csr && id->driver_info & BTUSB_CSR)
 910                 return -ENODEV;
 911
 912         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 913                 return -ENODEV;
 914
 915         data = kzalloc(sizeof(*data), GFP_KERNEL);
 916         if (!data)
 917                 return -ENOMEM;
 918
 919         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 920                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 921
 922                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 923                         data->intr_ep = ep_desc;
 924                         continue;
 925                 }
 926
 927                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 928                         data->bulk_tx_ep = ep_desc;
 929                         continue;
 930                 }
 931
 932                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 933                         data->bulk_rx_ep = ep_desc;
 934                         continue;
 935                 }
 936         }
 937
 938         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 939                 kfree(data);
 940                 return -ENODEV;
 941         }
 942
 943         data->cmdreq_type = USB_TYPE_CLASS;
 944
 945         data->udev = interface_to_usbdev(intf);
 946         data->intf = intf;
 947
 948         spin_lock_init(&data->lock);
 949
 950         INIT_WORK(&data->work, btusb_work);
 951         INIT_WORK(&data->waker, btusb_waker);
 952         spin_lock_init(&data->txlock);
 953
 954         init_usb_anchor(&data->tx_anchor);
 955         init_usb_anchor(&data->intr_anchor);
 956         init_usb_anchor(&data->bulk_anchor);
 957         init_usb_anchor(&data->isoc_anchor);
 958         init_usb_anchor(&data->deferred);
 959
 960         hdev = hci_alloc_dev();
 961         if (!hdev) {
 962                 kfree(data);
 963                 return -ENOMEM;
 964         }
 965
 966         hdev->bus = HCI_USB;
 967         hdev->driver_data = data;
 968
 969         data->hdev = hdev;
 970
 971         SET_HCIDEV_DEV(hdev, &intf->dev);
 972
 973         hdev->open     = btusb_open;
 974         hdev->close    = btusb_close;
 975         hdev->flush    = btusb_flush;
 976         hdev->send     = btusb_send_frame;
 977         hdev->destruct = btusb_destruct;
 978         hdev->notify   = btusb_notify;
 979
 980         hdev->owner = THIS_MODULE;
 981
 982         /* Interface numbers are hardcoded in the specification */
 983         data->isoc = usb_ifnum_to_if(data->udev, 1);
 984
 985         if (!reset)
 986                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 987
 988         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
 989                 if (!disable_scofix)
 990                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
 991         }
 992
 993         if (id->driver_info & BTUSB_BROKEN_ISOC)
 994                 data->isoc = NULL;
 995
 996         if (id->driver_info & BTUSB_DIGIANSWER) {
 997                 data->cmdreq_type = USB_TYPE_VENDOR;
 998                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
 999         }
1000
1001         if (id->driver_info & BTUSB_CSR) {
1002                 struct usb_device *udev = data->udev;
1003
1004                 /* Old firmware would otherwise execute USB reset */
1005                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1006                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1007         }
1008
1009         if (id->driver_info & BTUSB_SNIFFER) {
1010                 struct usb_device *udev = data->udev;
1011
1012                 /* New sniffer firmware has crippled HCI interface */
1013                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1014                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1015
1016                 data->isoc = NULL;
1017         }
1018
1019         if (id->driver_info & BTUSB_BCM92035) {
1020                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1021                 struct sk_buff *skb;
1022
1023                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1024                 if (skb) {
1025                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1026                         skb_queue_tail(&hdev->driver_init, skb);
1027                 }
1028         }
1029
1030         if (data->isoc) {
1031                 err = usb_driver_claim_interface(&btusb_driver,
1032                                                         data->isoc, data);
1033                 if (err < 0) {
1034                         hci_free_dev(hdev);
1035                         kfree(data);
1036                         return err;
1037                 }
1038         }
1039
1040         err = hci_register_dev(hdev);
1041         if (err < 0) {
1042                 hci_free_dev(hdev);
1043                 kfree(data);
1044                 return err;
1045         }
1046
1047         usb_set_intfdata(intf, data);
1048
1049         return 0;
1050 }
1051
1052 static void btusb_disconnect(struct usb_interface *intf)
1053 {
1054         struct btusb_data *data = usb_get_intfdata(intf);
1055         struct hci_dev *hdev;
1056
1057         BT_DBG("intf %p", intf);
1058
1059         if (!data)
1060                 return;
1061
1062         hdev = data->hdev;
1063
1064         __hci_dev_hold(hdev);
1065
1066         usb_set_intfdata(data->intf, NULL);
1067
1068         if (data->isoc)
1069                 usb_set_intfdata(data->isoc, NULL);
1070
1071         hci_unregister_dev(hdev);
1072
1073         if (intf == data->isoc)
1074                 usb_driver_release_interface(&btusb_driver, data->intf);
1075         else if (data->isoc)
1076                 usb_driver_release_interface(&btusb_driver, data->isoc);
1077
1078         __hci_dev_put(hdev);
1079
1080         hci_free_dev(hdev);
1081 }
1082
1083 #ifdef CONFIG_PM
1084 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1085 {
1086         struct btusb_data *data = usb_get_intfdata(intf);
1087
1088         BT_DBG("intf %p", intf);
1089
1090         if (data->suspend_count++)
1091                 return 0;
1092
1093         spin_lock_irq(&data->txlock);
1094         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1095                 set_bit(BTUSB_SUSPENDING, &data->flags);
1096                 spin_unlock_irq(&data->txlock);
1097         } else {
1098                 spin_unlock_irq(&data->txlock);
1099                 data->suspend_count--;
1100                 return -EBUSY;
1101         }
1102
1103         cancel_work_sync(&data->work);
1104
1105         btusb_stop_traffic(data);
1106         usb_kill_anchored_urbs(&data->tx_anchor);
1107
1108         return 0;
1109 }
1110
1111 static void play_deferred(struct btusb_data *data)
1112 {
1113         struct urb *urb;
1114         int err;
1115
1116         while ((urb = usb_get_from_anchor(&data->deferred))) {
1117                 err = usb_submit_urb(urb, GFP_ATOMIC);
1118                 if (err < 0)
1119                         break;
1120
1121                 data->tx_in_flight++;
1122         }
1123         usb_scuttle_anchored_urbs(&data->deferred);
1124 }
1125
1126 static int btusb_resume(struct usb_interface *intf)
1127 {
1128         struct btusb_data *data = usb_get_intfdata(intf);
1129         struct hci_dev *hdev = data->hdev;
1130         int err = 0;
1131
1132         BT_DBG("intf %p", intf);
1133
1134         if (--data->suspend_count)
1135                 return 0;
1136
1137         if (!test_bit(HCI_RUNNING, &hdev->flags))
1138                 goto done;
1139
1140         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1141                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1142                 if (err < 0) {
1143                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1144                         goto failed;
1145                 }
1146         }
1147
1148         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1149                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1150                 if (err < 0) {
1151                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1152                         goto failed;
1153                 }
1154
1155                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1156         }
1157
1158         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1159                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1160                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1161                 else
1162                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1163         }
1164
1165         spin_lock_irq(&data->txlock);
1166         play_deferred(data);
1167         clear_bit(BTUSB_SUSPENDING, &data->flags);
1168         spin_unlock_irq(&data->txlock);
1169         schedule_work(&data->work);
1170
1171         return 0;
1172
1173 failed:
1174         usb_scuttle_anchored_urbs(&data->deferred);
1175 done:
1176         spin_lock_irq(&data->txlock);
1177         clear_bit(BTUSB_SUSPENDING, &data->flags);
1178         spin_unlock_irq(&data->txlock);
1179
1180         return err;
1181 }
1182 #endif
1183
1184 static struct usb_driver btusb_driver = {
1185         .name           = "btusb",
1186         .probe          = btusb_probe,
1187         .disconnect     = btusb_disconnect,
1188 #ifdef CONFIG_PM
1189         .suspend        = btusb_suspend,
1190         .resume         = btusb_resume,
1191 #endif
1192         .id_table       = btusb_table,
1193         .supports_autosuspend = 1,
1194 };
1195
1196 static int __init btusb_init(void)
1197 {
1198         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1199
1200         return usb_register(&btusb_driver);
1201 }
1202
1203 static void __exit btusb_exit(void)
1204 {
1205         usb_deregister(&btusb_driver);
1206 }
1207
1208 module_init(btusb_init);
1209 module_exit(btusb_exit);
1210
1211 module_param(ignore_dga, bool, 0644);
1212 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1213
1214 module_param(ignore_csr, bool, 0644);
1215 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1216
1217 module_param(ignore_sniffer, bool, 0644);
1218 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1219
1220 module_param(disable_scofix, bool, 0644);
1221 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1222
1223 module_param(force_scofix, bool, 0644);
1224 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1225
1226 module_param(reset, bool, 0644);
1227 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1228
1229 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1230 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1231 MODULE_VERSION(VERSION);
1232 MODULE_LICENSE("GPL");