drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static bool ignore_dga;
  41 static bool ignore_csr;
  42 static bool ignore_sniffer;
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45
  46 static bool reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58
  59 static struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x05ac, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0a5c, 0x21e3) },
 105         { USB_DEVICE(0x0a5c, 0x21f3) },
 106         { USB_DEVICE(0x413c, 0x8197) },
 107
 108         { }     /* Terminating entry */
 109 };
 110
 111 MODULE_DEVICE_TABLE(usb, btusb_table);
 112
 113 static struct usb_device_id blacklist_table[] = {
 114         /* CSR BlueCore devices */
 115         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 116
 117         /* Broadcom BCM2033 without firmware */
 118         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 119
 120         /* Atheros 3011 with sflash firmware */
 121         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 122         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 123         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 124
 125         /* Atheros AR9285 Malbec with sflash firmware */
 126         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros 3012 with sflash firmware */
 129         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 130
 131         /* Atheros AR5BBU12 with sflash firmware */
 132         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 133
 134         /* Broadcom BCM2035 */
 135         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 136         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 137         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 138
 139         /* Broadcom BCM2045 */
 140         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 141         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 142
 143         /* IBM/Lenovo ThinkPad with Broadcom chip */
 144         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 145         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 146
 147         /* HP laptop with Broadcom chip */
 148         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 149
 150         /* Dell laptop with Broadcom chip */
 151         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* Dell Wireless 370 and 410 devices */
 154         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 155         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 156
 157         /* Belkin F8T012 and F8T013 devices */
 158         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 159         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 160
 161         /* Asus WL-BTD202 device */
 162         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 163
 164         /* Kensington Bluetooth USB adapter */
 165         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 166
 167         /* RTX Telecom based adapters with buggy SCO support */
 168         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 169         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 170
 171         /* CONWISE Technology based adapters with buggy SCO support */
 172         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 173
 174         /* Digianswer devices */
 175         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 176         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 177
 178         /* CSR BlueCore Bluetooth Sniffer */
 179         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 180
 181         /* Frontline ComProbe Bluetooth Sniffer */
 182         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 183
 184         { }     /* Terminating entry */
 185 };
 186
 187 #define BTUSB_MAX_ISOC_FRAMES   10
 188
 189 #define BTUSB_INTR_RUNNING      0
 190 #define BTUSB_BULK_RUNNING      1
 191 #define BTUSB_ISOC_RUNNING      2
 192 #define BTUSB_SUSPENDING        3
 193 #define BTUSB_DID_ISO_RESUME    4
 194
 195 struct btusb_data {
 196         struct hci_dev       *hdev;
 197         struct usb_device    *udev;
 198         struct usb_interface *intf;
 199         struct usb_interface *isoc;
 200
 201         spinlock_t lock;
 202
 203         unsigned long flags;
 204
 205         struct work_struct work;
 206         struct work_struct waker;
 207
 208         struct usb_anchor tx_anchor;
 209         struct usb_anchor intr_anchor;
 210         struct usb_anchor bulk_anchor;
 211         struct usb_anchor isoc_anchor;
 212         struct usb_anchor deferred;
 213         int tx_in_flight;
 214         spinlock_t txlock;
 215
 216         struct usb_endpoint_descriptor *intr_ep;
 217         struct usb_endpoint_descriptor *bulk_tx_ep;
 218         struct usb_endpoint_descriptor *bulk_rx_ep;
 219         struct usb_endpoint_descriptor *isoc_tx_ep;
 220         struct usb_endpoint_descriptor *isoc_rx_ep;
 221
 222         __u8 cmdreq_type;
 223
 224         unsigned int sco_num;
 225         int isoc_altsetting;
 226         int suspend_count;
 227 };
 228
 229 static int inc_tx(struct btusb_data *data)
 230 {
 231         unsigned long flags;
 232         int rv;
 233
 234         spin_lock_irqsave(&data->txlock, flags);
 235         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 236         if (!rv)
 237                 data->tx_in_flight++;
 238         spin_unlock_irqrestore(&data->txlock, flags);
 239
 240         return rv;
 241 }
 242
 243 static void btusb_intr_complete(struct urb *urb)
 244 {
 245         struct hci_dev *hdev = urb->context;
 246         struct btusb_data *data = hdev->driver_data;
 247         int err;
 248
 249         BT_DBG("%s urb %p status %d count %d", hdev->name,
 250                                         urb, urb->status, urb->actual_length);
 251
 252         if (!test_bit(HCI_RUNNING, &hdev->flags))
 253                 return;
 254
 255         if (urb->status == 0) {
 256                 hdev->stat.byte_rx += urb->actual_length;
 257
 258                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 259                                                 urb->transfer_buffer,
 260                                                 urb->actual_length) < 0) {
 261                         BT_ERR("%s corrupted event packet", hdev->name);
 262                         hdev->stat.err_rx++;
 263                 }
 264         }
 265
 266         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 267                 return;
 268
 269         usb_mark_last_busy(data->udev);
 270         usb_anchor_urb(urb, &data->intr_anchor);
 271
 272         err = usb_submit_urb(urb, GFP_ATOMIC);
 273         if (err < 0) {
 274                 /* -EPERM: urb is being killed;
 275                  * -ENODEV: device got disconnected */
 276                 if (err != -EPERM && err != -ENODEV)
 277                         BT_ERR("%s urb %p failed to resubmit (%d)",
 278                                                 hdev->name, urb, -err);
 279                 usb_unanchor_urb(urb);
 280         }
 281 }
 282
 283 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 284 {
 285         struct btusb_data *data = hdev->driver_data;
 286         struct urb *urb;
 287         unsigned char *buf;
 288         unsigned int pipe;
 289         int err, size;
 290
 291         BT_DBG("%s", hdev->name);
 292
 293         if (!data->intr_ep)
 294                 return -ENODEV;
 295
 296         urb = usb_alloc_urb(0, mem_flags);
 297         if (!urb)
 298                 return -ENOMEM;
 299
 300         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 301
 302         buf = kmalloc(size, mem_flags);
 303         if (!buf) {
 304                 usb_free_urb(urb);
 305                 return -ENOMEM;
 306         }
 307
 308         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 309
 310         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 311                                                 btusb_intr_complete, hdev,
 312                                                 data->intr_ep->bInterval);
 313
 314         urb->transfer_flags |= URB_FREE_BUFFER;
 315
 316         usb_anchor_urb(urb, &data->intr_anchor);
 317
 318         err = usb_submit_urb(urb, mem_flags);
 319         if (err < 0) {
 320                 if (err != -EPERM && err != -ENODEV)
 321                         BT_ERR("%s urb %p submission failed (%d)",
 322                                                 hdev->name, urb, -err);
 323                 usb_unanchor_urb(urb);
 324         }
 325
 326         usb_free_urb(urb);
 327
 328         return err;
 329 }
 330
 331 static void btusb_bulk_complete(struct urb *urb)
 332 {
 333         struct hci_dev *hdev = urb->context;
 334         struct btusb_data *data = hdev->driver_data;
 335         int err;
 336
 337         BT_DBG("%s urb %p status %d count %d", hdev->name,
 338                                         urb, urb->status, urb->actual_length);
 339
 340         if (!test_bit(HCI_RUNNING, &hdev->flags))
 341                 return;
 342
 343         if (urb->status == 0) {
 344                 hdev->stat.byte_rx += urb->actual_length;
 345
 346                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 347                                                 urb->transfer_buffer,
 348                                                 urb->actual_length) < 0) {
 349                         BT_ERR("%s corrupted ACL packet", hdev->name);
 350                         hdev->stat.err_rx++;
 351                 }
 352         }
 353
 354         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 355                 return;
 356
 357         usb_anchor_urb(urb, &data->bulk_anchor);
 358         usb_mark_last_busy(data->udev);
 359
 360         err = usb_submit_urb(urb, GFP_ATOMIC);
 361         if (err < 0) {
 362                 /* -EPERM: urb is being killed;
 363                  * -ENODEV: device got disconnected */
 364                 if (err != -EPERM && err != -ENODEV)
 365                         BT_ERR("%s urb %p failed to resubmit (%d)",
 366                                                 hdev->name, urb, -err);
 367                 usb_unanchor_urb(urb);
 368         }
 369 }
 370
 371 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 372 {
 373         struct btusb_data *data = hdev->driver_data;
 374         struct urb *urb;
 375         unsigned char *buf;
 376         unsigned int pipe;
 377         int err, size = HCI_MAX_FRAME_SIZE;
 378
 379         BT_DBG("%s", hdev->name);
 380
 381         if (!data->bulk_rx_ep)
 382                 return -ENODEV;
 383
 384         urb = usb_alloc_urb(0, mem_flags);
 385         if (!urb)
 386                 return -ENOMEM;
 387
 388         buf = kmalloc(size, mem_flags);
 389         if (!buf) {
 390                 usb_free_urb(urb);
 391                 return -ENOMEM;
 392         }
 393
 394         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 395
 396         usb_fill_bulk_urb(urb, data->udev, pipe,
 397                                         buf, size, btusb_bulk_complete, hdev);
 398
 399         urb->transfer_flags |= URB_FREE_BUFFER;
 400
 401         usb_mark_last_busy(data->udev);
 402         usb_anchor_urb(urb, &data->bulk_anchor);
 403
 404         err = usb_submit_urb(urb, mem_flags);
 405         if (err < 0) {
 406                 if (err != -EPERM && err != -ENODEV)
 407                         BT_ERR("%s urb %p submission failed (%d)",
 408                                                 hdev->name, urb, -err);
 409                 usb_unanchor_urb(urb);
 410         }
 411
 412         usb_free_urb(urb);
 413
 414         return err;
 415 }
 416
 417 static void btusb_isoc_complete(struct urb *urb)
 418 {
 419         struct hci_dev *hdev = urb->context;
 420         struct btusb_data *data = hdev->driver_data;
 421         int i, err;
 422
 423         BT_DBG("%s urb %p status %d count %d", hdev->name,
 424                                         urb, urb->status, urb->actual_length);
 425
 426         if (!test_bit(HCI_RUNNING, &hdev->flags))
 427                 return;
 428
 429         if (urb->status == 0) {
 430                 for (i = 0; i < urb->number_of_packets; i++) {
 431                         unsigned int offset = urb->iso_frame_desc[i].offset;
 432                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 433
 434                         if (urb->iso_frame_desc[i].status)
 435                                 continue;
 436
 437                         hdev->stat.byte_rx += length;
 438
 439                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 440                                                 urb->transfer_buffer + offset,
 441                                                                 length) < 0) {
 442                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 443                                 hdev->stat.err_rx++;
 444                         }
 445                 }
 446         }
 447
 448         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 449                 return;
 450
 451         usb_anchor_urb(urb, &data->isoc_anchor);
 452
 453         err = usb_submit_urb(urb, GFP_ATOMIC);
 454         if (err < 0) {
 455                 /* -EPERM: urb is being killed;
 456                  * -ENODEV: device got disconnected */
 457                 if (err != -EPERM && err != -ENODEV)
 458                         BT_ERR("%s urb %p failed to resubmit (%d)",
 459                                                 hdev->name, urb, -err);
 460                 usb_unanchor_urb(urb);
 461         }
 462 }
 463
 464 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 465 {
 466         int i, offset = 0;
 467
 468         BT_DBG("len %d mtu %d", len, mtu);
 469
 470         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 471                                         i++, offset += mtu, len -= mtu) {
 472                 urb->iso_frame_desc[i].offset = offset;
 473                 urb->iso_frame_desc[i].length = mtu;
 474         }
 475
 476         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 477                 urb->iso_frame_desc[i].offset = offset;
 478                 urb->iso_frame_desc[i].length = len;
 479                 i++;
 480         }
 481
 482         urb->number_of_packets = i;
 483 }
 484
 485 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 486 {
 487         struct btusb_data *data = hdev->driver_data;
 488         struct urb *urb;
 489         unsigned char *buf;
 490         unsigned int pipe;
 491         int err, size;
 492
 493         BT_DBG("%s", hdev->name);
 494
 495         if (!data->isoc_rx_ep)
 496                 return -ENODEV;
 497
 498         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 499         if (!urb)
 500                 return -ENOMEM;
 501
 502         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 503                                                 BTUSB_MAX_ISOC_FRAMES;
 504
 505         buf = kmalloc(size, mem_flags);
 506         if (!buf) {
 507                 usb_free_urb(urb);
 508                 return -ENOMEM;
 509         }
 510
 511         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 512
 513         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 514                                 hdev, data->isoc_rx_ep->bInterval);
 515
 516         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 517
 518         __fill_isoc_descriptor(urb, size,
 519                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 520
 521         usb_anchor_urb(urb, &data->isoc_anchor);
 522
 523         err = usb_submit_urb(urb, mem_flags);
 524         if (err < 0) {
 525                 if (err != -EPERM && err != -ENODEV)
 526                         BT_ERR("%s urb %p submission failed (%d)",
 527                                                 hdev->name, urb, -err);
 528                 usb_unanchor_urb(urb);
 529         }
 530
 531         usb_free_urb(urb);
 532
 533         return err;
 534 }
 535
 536 static void btusb_tx_complete(struct urb *urb)
 537 {
 538         struct sk_buff *skb = urb->context;
 539         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 540         struct btusb_data *data = hdev->driver_data;
 541
 542         BT_DBG("%s urb %p status %d count %d", hdev->name,
 543                                         urb, urb->status, urb->actual_length);
 544
 545         if (!test_bit(HCI_RUNNING, &hdev->flags))
 546                 goto done;
 547
 548         if (!urb->status)
 549                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 550         else
 551                 hdev->stat.err_tx++;
 552
 553 done:
 554         spin_lock(&data->txlock);
 555         data->tx_in_flight--;
 556         spin_unlock(&data->txlock);
 557
 558         kfree(urb->setup_packet);
 559
 560         kfree_skb(skb);
 561 }
 562
 563 static void btusb_isoc_tx_complete(struct urb *urb)
 564 {
 565         struct sk_buff *skb = urb->context;
 566         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 567
 568         BT_DBG("%s urb %p status %d count %d", hdev->name,
 569                                         urb, urb->status, urb->actual_length);
 570
 571         if (!test_bit(HCI_RUNNING, &hdev->flags))
 572                 goto done;
 573
 574         if (!urb->status)
 575                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 576         else
 577                 hdev->stat.err_tx++;
 578
 579 done:
 580         kfree(urb->setup_packet);
 581
 582         kfree_skb(skb);
 583 }
 584
 585 static int btusb_open(struct hci_dev *hdev)
 586 {
 587         struct btusb_data *data = hdev->driver_data;
 588         int err;
 589
 590         BT_DBG("%s", hdev->name);
 591
 592         err = usb_autopm_get_interface(data->intf);
 593         if (err < 0)
 594                 return err;
 595
 596         data->intf->needs_remote_wakeup = 1;
 597
 598         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 599                 goto done;
 600
 601         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 602                 goto done;
 603
 604         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 605         if (err < 0)
 606                 goto failed;
 607
 608         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 609         if (err < 0) {
 610                 usb_kill_anchored_urbs(&data->intr_anchor);
 611                 goto failed;
 612         }
 613
 614         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 615         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 616
 617 done:
 618         usb_autopm_put_interface(data->intf);
 619         return 0;
 620
 621 failed:
 622         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 623         clear_bit(HCI_RUNNING, &hdev->flags);
 624         usb_autopm_put_interface(data->intf);
 625         return err;
 626 }
 627
 628 static void btusb_stop_traffic(struct btusb_data *data)
 629 {
 630         usb_kill_anchored_urbs(&data->intr_anchor);
 631         usb_kill_anchored_urbs(&data->bulk_anchor);
 632         usb_kill_anchored_urbs(&data->isoc_anchor);
 633 }
 634
 635 static int btusb_close(struct hci_dev *hdev)
 636 {
 637         struct btusb_data *data = hdev->driver_data;
 638         int err;
 639
 640         BT_DBG("%s", hdev->name);
 641
 642         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 643                 return 0;
 644
 645         cancel_work_sync(&data->work);
 646         cancel_work_sync(&data->waker);
 647
 648         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 649         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 650         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 651
 652         btusb_stop_traffic(data);
 653         err = usb_autopm_get_interface(data->intf);
 654         if (err < 0)
 655                 goto failed;
 656
 657         data->intf->needs_remote_wakeup = 0;
 658         usb_autopm_put_interface(data->intf);
 659
 660 failed:
 661         usb_scuttle_anchored_urbs(&data->deferred);
 662         return 0;
 663 }
 664
 665 static int btusb_flush(struct hci_dev *hdev)
 666 {
 667         struct btusb_data *data = hdev->driver_data;
 668
 669         BT_DBG("%s", hdev->name);
 670
 671         usb_kill_anchored_urbs(&data->tx_anchor);
 672
 673         return 0;
 674 }
 675
 676 static int btusb_send_frame(struct sk_buff *skb)
 677 {
 678         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 679         struct btusb_data *data = hdev->driver_data;
 680         struct usb_ctrlrequest *dr;
 681         struct urb *urb;
 682         unsigned int pipe;
 683         int err;
 684
 685         BT_DBG("%s", hdev->name);
 686
 687         if (!test_bit(HCI_RUNNING, &hdev->flags))
 688                 return -EBUSY;
 689
 690         switch (bt_cb(skb)->pkt_type) {
 691         case HCI_COMMAND_PKT:
 692                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 693                 if (!urb)
 694                         return -ENOMEM;
 695
 696                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 697                 if (!dr) {
 698                         usb_free_urb(urb);
 699                         return -ENOMEM;
 700                 }
 701
 702                 dr->bRequestType = data->cmdreq_type;
 703                 dr->bRequest     = 0;
 704                 dr->wIndex       = 0;
 705                 dr->wValue       = 0;
 706                 dr->wLength      = __cpu_to_le16(skb->len);
 707
 708                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 709
 710                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 711                                 skb->data, skb->len, btusb_tx_complete, skb);
 712
 713                 hdev->stat.cmd_tx++;
 714                 break;
 715
 716         case HCI_ACLDATA_PKT:
 717                 if (!data->bulk_tx_ep)
 718                         return -ENODEV;
 719
 720                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 721                 if (!urb)
 722                         return -ENOMEM;
 723
 724                 pipe = usb_sndbulkpipe(data->udev,
 725                                         data->bulk_tx_ep->bEndpointAddress);
 726
 727                 usb_fill_bulk_urb(urb, data->udev, pipe,
 728                                 skb->data, skb->len, btusb_tx_complete, skb);
 729
 730                 hdev->stat.acl_tx++;
 731                 break;
 732
 733         case HCI_SCODATA_PKT:
 734                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 735                         return -ENODEV;
 736
 737                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 738                 if (!urb)
 739                         return -ENOMEM;
 740
 741                 pipe = usb_sndisocpipe(data->udev,
 742                                         data->isoc_tx_ep->bEndpointAddress);
 743
 744                 usb_fill_int_urb(urb, data->udev, pipe,
 745                                 skb->data, skb->len, btusb_isoc_tx_complete,
 746                                 skb, data->isoc_tx_ep->bInterval);
 747
 748                 urb->transfer_flags  = URB_ISO_ASAP;
 749
 750                 __fill_isoc_descriptor(urb, skb->len,
 751                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 752
 753                 hdev->stat.sco_tx++;
 754                 goto skip_waking;
 755
 756         default:
 757                 return -EILSEQ;
 758         }
 759
 760         err = inc_tx(data);
 761         if (err) {
 762                 usb_anchor_urb(urb, &data->deferred);
 763                 schedule_work(&data->waker);
 764                 err = 0;
 765                 goto done;
 766         }
 767
 768 skip_waking:
 769         usb_anchor_urb(urb, &data->tx_anchor);
 770
 771         err = usb_submit_urb(urb, GFP_ATOMIC);
 772         if (err < 0) {
 773                 if (err != -EPERM && err != -ENODEV)
 774                         BT_ERR("%s urb %p submission failed (%d)",
 775                                                 hdev->name, urb, -err);
 776                 kfree(urb->setup_packet);
 777                 usb_unanchor_urb(urb);
 778         } else {
 779                 usb_mark_last_busy(data->udev);
 780         }
 781
 782 done:
 783         usb_free_urb(urb);
 784         return err;
 785 }
 786
 787 static void btusb_destruct(struct hci_dev *hdev)
 788 {
 789         struct btusb_data *data = hdev->driver_data;
 790
 791         BT_DBG("%s", hdev->name);
 792
 793         kfree(data);
 794 }
 795
 796 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 797 {
 798         struct btusb_data *data = hdev->driver_data;
 799
 800         BT_DBG("%s evt %d", hdev->name, evt);
 801
 802         if (hdev->conn_hash.sco_num != data->sco_num) {
 803                 data->sco_num = hdev->conn_hash.sco_num;
 804                 schedule_work(&data->work);
 805         }
 806 }
 807
 808 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 809 {
 810         struct btusb_data *data = hdev->driver_data;
 811         struct usb_interface *intf = data->isoc;
 812         struct usb_endpoint_descriptor *ep_desc;
 813         int i, err;
 814
 815         if (!data->isoc)
 816                 return -ENODEV;
 817
 818         err = usb_set_interface(data->udev, 1, altsetting);
 819         if (err < 0) {
 820                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 821                 return err;
 822         }
 823
 824         data->isoc_altsetting = altsetting;
 825
 826         data->isoc_tx_ep = NULL;
 827         data->isoc_rx_ep = NULL;
 828
 829         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 830                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 831
 832                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 833                         data->isoc_tx_ep = ep_desc;
 834                         continue;
 835                 }
 836
 837                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 838                         data->isoc_rx_ep = ep_desc;
 839                         continue;
 840                 }
 841         }
 842
 843         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 844                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 845                 return -ENODEV;
 846         }
 847
 848         return 0;
 849 }
 850
 851 static void btusb_work(struct work_struct *work)
 852 {
 853         struct btusb_data *data = container_of(work, struct btusb_data, work);
 854         struct hci_dev *hdev = data->hdev;
 855         int err;
 856
 857         if (hdev->conn_hash.sco_num > 0) {
 858                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 859                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 860                         if (err < 0) {
 861                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 862                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 863                                 return;
 864                         }
 865
 866                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 867                 }
 868                 if (data->isoc_altsetting != 2) {
 869                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 870                         usb_kill_anchored_urbs(&data->isoc_anchor);
 871
 872                         if (__set_isoc_interface(hdev, 2) < 0)
 873                                 return;
 874                 }
 875
 876                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 877                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 878                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 879                         else
 880                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 881                 }
 882         } else {
 883                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 884                 usb_kill_anchored_urbs(&data->isoc_anchor);
 885
 886                 __set_isoc_interface(hdev, 0);
 887                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 888                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 889         }
 890 }
 891
 892 static void btusb_waker(struct work_struct *work)
 893 {
 894         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 895         int err;
 896
 897         err = usb_autopm_get_interface(data->intf);
 898         if (err < 0)
 899                 return;
 900
 901         usb_autopm_put_interface(data->intf);
 902 }
 903
 904 static int btusb_probe(struct usb_interface *intf,
 905                                 const struct usb_device_id *id)
 906 {
 907         struct usb_endpoint_descriptor *ep_desc;
 908         struct btusb_data *data;
 909         struct hci_dev *hdev;
 910         int i, err;
 911
 912         BT_DBG("intf %p id %p", intf, id);
 913
 914         /* interface numbers are hardcoded in the spec */
 915         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 916                 return -ENODEV;
 917
 918         if (!id->driver_info) {
 919                 const struct usb_device_id *match;
 920                 match = usb_match_id(intf, blacklist_table);
 921                 if (match)
 922                         id = match;
 923         }
 924
 925         if (id->driver_info == BTUSB_IGNORE)
 926                 return -ENODEV;
 927
 928         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 929                 return -ENODEV;
 930
 931         if (ignore_csr && id->driver_info & BTUSB_CSR)
 932                 return -ENODEV;
 933
 934         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 935                 return -ENODEV;
 936
 937         if (id->driver_info & BTUSB_ATH3012) {
 938                 struct usb_device *udev = interface_to_usbdev(intf);
 939
 940                 /* Old firmware would otherwise let ath3k driver load
 941                  * patch and sysconfig files */
 942                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 943                         return -ENODEV;
 944         }
 945
 946         data = kzalloc(sizeof(*data), GFP_KERNEL);
 947         if (!data)
 948                 return -ENOMEM;
 949
 950         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 951                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 952
 953                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 954                         data->intr_ep = ep_desc;
 955                         continue;
 956                 }
 957
 958                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 959                         data->bulk_tx_ep = ep_desc;
 960                         continue;
 961                 }
 962
 963                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 964                         data->bulk_rx_ep = ep_desc;
 965                         continue;
 966                 }
 967         }
 968
 969         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 970                 kfree(data);
 971                 return -ENODEV;
 972         }
 973
 974         data->cmdreq_type = USB_TYPE_CLASS;
 975
 976         data->udev = interface_to_usbdev(intf);
 977         data->intf = intf;
 978
 979         spin_lock_init(&data->lock);
 980
 981         INIT_WORK(&data->work, btusb_work);
 982         INIT_WORK(&data->waker, btusb_waker);
 983         spin_lock_init(&data->txlock);
 984
 985         init_usb_anchor(&data->tx_anchor);
 986         init_usb_anchor(&data->intr_anchor);
 987         init_usb_anchor(&data->bulk_anchor);
 988         init_usb_anchor(&data->isoc_anchor);
 989         init_usb_anchor(&data->deferred);
 990
 991         hdev = hci_alloc_dev();
 992         if (!hdev) {
 993                 kfree(data);
 994                 return -ENOMEM;
 995         }
 996
 997         hdev->bus = HCI_USB;
 998         hdev->driver_data = data;
 999
1000         data->hdev = hdev;
1001
1002         SET_HCIDEV_DEV(hdev, &intf->dev);
1003
1004         hdev->open     = btusb_open;
1005         hdev->close    = btusb_close;
1006         hdev->flush    = btusb_flush;
1007         hdev->send     = btusb_send_frame;
1008         hdev->destruct = btusb_destruct;
1009         hdev->notify   = btusb_notify;
1010
1011         hdev->owner = THIS_MODULE;
1012
1013         /* Interface numbers are hardcoded in the specification */
1014         data->isoc = usb_ifnum_to_if(data->udev, 1);
1015
1016         if (!reset)
1017                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1018
1019         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1020                 if (!disable_scofix)
1021                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1022         }
1023
1024         if (id->driver_info & BTUSB_BROKEN_ISOC)
1025                 data->isoc = NULL;
1026
1027         if (id->driver_info & BTUSB_DIGIANSWER) {
1028                 data->cmdreq_type = USB_TYPE_VENDOR;
1029                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1030         }
1031
1032         if (id->driver_info & BTUSB_CSR) {
1033                 struct usb_device *udev = data->udev;
1034
1035                 /* Old firmware would otherwise execute USB reset */
1036                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1037                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1038         }
1039
1040         if (id->driver_info & BTUSB_SNIFFER) {
1041                 struct usb_device *udev = data->udev;
1042
1043                 /* New sniffer firmware has crippled HCI interface */
1044                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1045                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1046
1047                 data->isoc = NULL;
1048         }
1049
1050         if (id->driver_info & BTUSB_BCM92035) {
1051                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1052                 struct sk_buff *skb;
1053
1054                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1055                 if (skb) {
1056                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1057                         skb_queue_tail(&hdev->driver_init, skb);
1058                 }
1059         }
1060
1061         if (data->isoc) {
1062                 err = usb_driver_claim_interface(&btusb_driver,
1063                                                         data->isoc, data);
1064                 if (err < 0) {
1065                         hci_free_dev(hdev);
1066                         kfree(data);
1067                         return err;
1068                 }
1069         }
1070
1071         err = hci_register_dev(hdev);
1072         if (err < 0) {
1073                 hci_free_dev(hdev);
1074                 kfree(data);
1075                 return err;
1076         }
1077
1078         usb_set_intfdata(intf, data);
1079
1080         return 0;
1081 }
1082
1083 static void btusb_disconnect(struct usb_interface *intf)
1084 {
1085         struct btusb_data *data = usb_get_intfdata(intf);
1086         struct hci_dev *hdev;
1087
1088         BT_DBG("intf %p", intf);
1089
1090         if (!data)
1091                 return;
1092
1093         hdev = data->hdev;
1094
1095         __hci_dev_hold(hdev);
1096
1097         usb_set_intfdata(data->intf, NULL);
1098
1099         if (data->isoc)
1100                 usb_set_intfdata(data->isoc, NULL);
1101
1102         hci_unregister_dev(hdev);
1103
1104         if (intf == data->isoc)
1105                 usb_driver_release_interface(&btusb_driver, data->intf);
1106         else if (data->isoc)
1107                 usb_driver_release_interface(&btusb_driver, data->isoc);
1108
1109         __hci_dev_put(hdev);
1110
1111         hci_free_dev(hdev);
1112 }
1113
1114 #ifdef CONFIG_PM
1115 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1116 {
1117         struct btusb_data *data = usb_get_intfdata(intf);
1118
1119         BT_DBG("intf %p", intf);
1120
1121         if (data->suspend_count++)
1122                 return 0;
1123
1124         spin_lock_irq(&data->txlock);
1125         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1126                 set_bit(BTUSB_SUSPENDING, &data->flags);
1127                 spin_unlock_irq(&data->txlock);
1128         } else {
1129                 spin_unlock_irq(&data->txlock);
1130                 data->suspend_count--;
1131                 return -EBUSY;
1132         }
1133
1134         cancel_work_sync(&data->work);
1135
1136         btusb_stop_traffic(data);
1137         usb_kill_anchored_urbs(&data->tx_anchor);
1138
1139         return 0;
1140 }
1141
1142 static void play_deferred(struct btusb_data *data)
1143 {
1144         struct urb *urb;
1145         int err;
1146
1147         while ((urb = usb_get_from_anchor(&data->deferred))) {
1148                 err = usb_submit_urb(urb, GFP_ATOMIC);
1149                 if (err < 0)
1150                         break;
1151
1152                 data->tx_in_flight++;
1153         }
1154         usb_scuttle_anchored_urbs(&data->deferred);
1155 }
1156
1157 static int btusb_resume(struct usb_interface *intf)
1158 {
1159         struct btusb_data *data = usb_get_intfdata(intf);
1160         struct hci_dev *hdev = data->hdev;
1161         int err = 0;
1162
1163         BT_DBG("intf %p", intf);
1164
1165         if (--data->suspend_count)
1166                 return 0;
1167
1168         if (!test_bit(HCI_RUNNING, &hdev->flags))
1169                 goto done;
1170
1171         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1172                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1173                 if (err < 0) {
1174                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1175                         goto failed;
1176                 }
1177         }
1178
1179         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1180                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1181                 if (err < 0) {
1182                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1183                         goto failed;
1184                 }
1185
1186                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1187         }
1188
1189         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1190                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1191                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1192                 else
1193                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1194         }
1195
1196         spin_lock_irq(&data->txlock);
1197         play_deferred(data);
1198         clear_bit(BTUSB_SUSPENDING, &data->flags);
1199         spin_unlock_irq(&data->txlock);
1200         schedule_work(&data->work);
1201
1202         return 0;
1203
1204 failed:
1205         usb_scuttle_anchored_urbs(&data->deferred);
1206 done:
1207         spin_lock_irq(&data->txlock);
1208         clear_bit(BTUSB_SUSPENDING, &data->flags);
1209         spin_unlock_irq(&data->txlock);
1210
1211         return err;
1212 }
1213 #endif
1214
1215 static struct usb_driver btusb_driver = {
1216         .name           = "btusb",
1217         .probe          = btusb_probe,
1218         .disconnect     = btusb_disconnect,
1219 #ifdef CONFIG_PM
1220         .suspend        = btusb_suspend,
1221         .resume         = btusb_resume,
1222 #endif
1223         .id_table       = btusb_table,
1224         .supports_autosuspend = 1,
1225 };
1226
1227 module_usb_driver(btusb_driver);
1228
1229 module_param(ignore_dga, bool, 0644);
1230 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1231
1232 module_param(ignore_csr, bool, 0644);
1233 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1234
1235 module_param(ignore_sniffer, bool, 0644);
1236 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1237
1238 module_param(disable_scofix, bool, 0644);
1239 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1240
1241 module_param(force_scofix, bool, 0644);
1242 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1243
1244 module_param(reset, bool, 0644);
1245 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1246
1247 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1248 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1249 MODULE_VERSION(VERSION);
1250 MODULE_LICENSE("GPL");