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(0x413c, 0x8197) },
 106
 107         { }     /* Terminating entry */
 108 };
 109
 110 MODULE_DEVICE_TABLE(usb, btusb_table);
 111
 112 static struct usb_device_id blacklist_table[] = {
 113         /* CSR BlueCore devices */
 114         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 115
 116         /* Broadcom BCM2033 without firmware */
 117         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 118
 119         /* Atheros 3011 with sflash firmware */
 120         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 121         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 122         { USB_DEVICE(0x0930, 0x0215), .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                 if (err != -EPERM && err != -ENODEV)
 320                         BT_ERR("%s urb %p submission failed (%d)",
 321                                                 hdev->name, urb, -err);
 322                 usb_unanchor_urb(urb);
 323         }
 324
 325         usb_free_urb(urb);
 326
 327         return err;
 328 }
 329
 330 static void btusb_bulk_complete(struct urb *urb)
 331 {
 332         struct hci_dev *hdev = urb->context;
 333         struct btusb_data *data = hdev->driver_data;
 334         int err;
 335
 336         BT_DBG("%s urb %p status %d count %d", hdev->name,
 337                                         urb, urb->status, urb->actual_length);
 338
 339         if (!test_bit(HCI_RUNNING, &hdev->flags))
 340                 return;
 341
 342         if (urb->status == 0) {
 343                 hdev->stat.byte_rx += urb->actual_length;
 344
 345                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 346                                                 urb->transfer_buffer,
 347                                                 urb->actual_length) < 0) {
 348                         BT_ERR("%s corrupted ACL packet", hdev->name);
 349                         hdev->stat.err_rx++;
 350                 }
 351         }
 352
 353         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 354                 return;
 355
 356         usb_anchor_urb(urb, &data->bulk_anchor);
 357         usb_mark_last_busy(data->udev);
 358
 359         err = usb_submit_urb(urb, GFP_ATOMIC);
 360         if (err < 0) {
 361                 /* -EPERM: urb is being killed;
 362                  * -ENODEV: device got disconnected */
 363                 if (err != -EPERM && err != -ENODEV)
 364                         BT_ERR("%s urb %p failed to resubmit (%d)",
 365                                                 hdev->name, urb, -err);
 366                 usb_unanchor_urb(urb);
 367         }
 368 }
 369
 370 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 371 {
 372         struct btusb_data *data = hdev->driver_data;
 373         struct urb *urb;
 374         unsigned char *buf;
 375         unsigned int pipe;
 376         int err, size = HCI_MAX_FRAME_SIZE;
 377
 378         BT_DBG("%s", hdev->name);
 379
 380         if (!data->bulk_rx_ep)
 381                 return -ENODEV;
 382
 383         urb = usb_alloc_urb(0, mem_flags);
 384         if (!urb)
 385                 return -ENOMEM;
 386
 387         buf = kmalloc(size, mem_flags);
 388         if (!buf) {
 389                 usb_free_urb(urb);
 390                 return -ENOMEM;
 391         }
 392
 393         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 394
 395         usb_fill_bulk_urb(urb, data->udev, pipe,
 396                                         buf, size, btusb_bulk_complete, hdev);
 397
 398         urb->transfer_flags |= URB_FREE_BUFFER;
 399
 400         usb_mark_last_busy(data->udev);
 401         usb_anchor_urb(urb, &data->bulk_anchor);
 402
 403         err = usb_submit_urb(urb, mem_flags);
 404         if (err < 0) {
 405                 if (err != -EPERM && err != -ENODEV)
 406                         BT_ERR("%s urb %p submission failed (%d)",
 407                                                 hdev->name, urb, -err);
 408                 usb_unanchor_urb(urb);
 409         }
 410
 411         usb_free_urb(urb);
 412
 413         return err;
 414 }
 415
 416 static void btusb_isoc_complete(struct urb *urb)
 417 {
 418         struct hci_dev *hdev = urb->context;
 419         struct btusb_data *data = hdev->driver_data;
 420         int i, err;
 421
 422         BT_DBG("%s urb %p status %d count %d", hdev->name,
 423                                         urb, urb->status, urb->actual_length);
 424
 425         if (!test_bit(HCI_RUNNING, &hdev->flags))
 426                 return;
 427
 428         if (urb->status == 0) {
 429                 for (i = 0; i < urb->number_of_packets; i++) {
 430                         unsigned int offset = urb->iso_frame_desc[i].offset;
 431                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 432
 433                         if (urb->iso_frame_desc[i].status)
 434                                 continue;
 435
 436                         hdev->stat.byte_rx += length;
 437
 438                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 439                                                 urb->transfer_buffer + offset,
 440                                                                 length) < 0) {
 441                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 442                                 hdev->stat.err_rx++;
 443                         }
 444                 }
 445         }
 446
 447         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 448                 return;
 449
 450         usb_anchor_urb(urb, &data->isoc_anchor);
 451
 452         err = usb_submit_urb(urb, GFP_ATOMIC);
 453         if (err < 0) {
 454                 /* -EPERM: urb is being killed;
 455                  * -ENODEV: device got disconnected */
 456                 if (err != -EPERM && err != -ENODEV)
 457                         BT_ERR("%s urb %p failed to resubmit (%d)",
 458                                                 hdev->name, urb, -err);
 459                 usb_unanchor_urb(urb);
 460         }
 461 }
 462
 463 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 464 {
 465         int i, offset = 0;
 466
 467         BT_DBG("len %d mtu %d", len, mtu);
 468
 469         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 470                                         i++, offset += mtu, len -= mtu) {
 471                 urb->iso_frame_desc[i].offset = offset;
 472                 urb->iso_frame_desc[i].length = mtu;
 473         }
 474
 475         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 476                 urb->iso_frame_desc[i].offset = offset;
 477                 urb->iso_frame_desc[i].length = len;
 478                 i++;
 479         }
 480
 481         urb->number_of_packets = i;
 482 }
 483
 484 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 485 {
 486         struct btusb_data *data = hdev->driver_data;
 487         struct urb *urb;
 488         unsigned char *buf;
 489         unsigned int pipe;
 490         int err, size;
 491
 492         BT_DBG("%s", hdev->name);
 493
 494         if (!data->isoc_rx_ep)
 495                 return -ENODEV;
 496
 497         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 498         if (!urb)
 499                 return -ENOMEM;
 500
 501         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 502                                                 BTUSB_MAX_ISOC_FRAMES;
 503
 504         buf = kmalloc(size, mem_flags);
 505         if (!buf) {
 506                 usb_free_urb(urb);
 507                 return -ENOMEM;
 508         }
 509
 510         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 511
 512         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 513                                 hdev, data->isoc_rx_ep->bInterval);
 514
 515         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 516
 517         __fill_isoc_descriptor(urb, size,
 518                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 519
 520         usb_anchor_urb(urb, &data->isoc_anchor);
 521
 522         err = usb_submit_urb(urb, mem_flags);
 523         if (err < 0) {
 524                 if (err != -EPERM && err != -ENODEV)
 525                         BT_ERR("%s urb %p submission failed (%d)",
 526                                                 hdev->name, urb, -err);
 527                 usb_unanchor_urb(urb);
 528         }
 529
 530         usb_free_urb(urb);
 531
 532         return err;
 533 }
 534
 535 static void btusb_tx_complete(struct urb *urb)
 536 {
 537         struct sk_buff *skb = urb->context;
 538         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 539         struct btusb_data *data = hdev->driver_data;
 540
 541         BT_DBG("%s urb %p status %d count %d", hdev->name,
 542                                         urb, urb->status, urb->actual_length);
 543
 544         if (!test_bit(HCI_RUNNING, &hdev->flags))
 545                 goto done;
 546
 547         if (!urb->status)
 548                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 549         else
 550                 hdev->stat.err_tx++;
 551
 552 done:
 553         spin_lock(&data->txlock);
 554         data->tx_in_flight--;
 555         spin_unlock(&data->txlock);
 556
 557         kfree(urb->setup_packet);
 558
 559         kfree_skb(skb);
 560 }
 561
 562 static void btusb_isoc_tx_complete(struct urb *urb)
 563 {
 564         struct sk_buff *skb = urb->context;
 565         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 566
 567         BT_DBG("%s urb %p status %d count %d", hdev->name,
 568                                         urb, urb->status, urb->actual_length);
 569
 570         if (!test_bit(HCI_RUNNING, &hdev->flags))
 571                 goto done;
 572
 573         if (!urb->status)
 574                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 575         else
 576                 hdev->stat.err_tx++;
 577
 578 done:
 579         kfree(urb->setup_packet);
 580
 581         kfree_skb(skb);
 582 }
 583
 584 static int btusb_open(struct hci_dev *hdev)
 585 {
 586         struct btusb_data *data = hdev->driver_data;
 587         int err;
 588
 589         BT_DBG("%s", hdev->name);
 590
 591         err = usb_autopm_get_interface(data->intf);
 592         if (err < 0)
 593                 return err;
 594
 595         data->intf->needs_remote_wakeup = 1;
 596
 597         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 598                 goto done;
 599
 600         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 601                 goto done;
 602
 603         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 604         if (err < 0)
 605                 goto failed;
 606
 607         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 608         if (err < 0) {
 609                 usb_kill_anchored_urbs(&data->intr_anchor);
 610                 goto failed;
 611         }
 612
 613         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 614         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 615
 616 done:
 617         usb_autopm_put_interface(data->intf);
 618         return 0;
 619
 620 failed:
 621         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 622         clear_bit(HCI_RUNNING, &hdev->flags);
 623         usb_autopm_put_interface(data->intf);
 624         return err;
 625 }
 626
 627 static void btusb_stop_traffic(struct btusb_data *data)
 628 {
 629         usb_kill_anchored_urbs(&data->intr_anchor);
 630         usb_kill_anchored_urbs(&data->bulk_anchor);
 631         usb_kill_anchored_urbs(&data->isoc_anchor);
 632 }
 633
 634 static int btusb_close(struct hci_dev *hdev)
 635 {
 636         struct btusb_data *data = hdev->driver_data;
 637         int err;
 638
 639         BT_DBG("%s", hdev->name);
 640
 641         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 642                 return 0;
 643
 644         cancel_work_sync(&data->work);
 645         cancel_work_sync(&data->waker);
 646
 647         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 648         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 649         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 650
 651         btusb_stop_traffic(data);
 652         err = usb_autopm_get_interface(data->intf);
 653         if (err < 0)
 654                 goto failed;
 655
 656         data->intf->needs_remote_wakeup = 0;
 657         usb_autopm_put_interface(data->intf);
 658
 659 failed:
 660         usb_scuttle_anchored_urbs(&data->deferred);
 661         return 0;
 662 }
 663
 664 static int btusb_flush(struct hci_dev *hdev)
 665 {
 666         struct btusb_data *data = hdev->driver_data;
 667
 668         BT_DBG("%s", hdev->name);
 669
 670         usb_kill_anchored_urbs(&data->tx_anchor);
 671
 672         return 0;
 673 }
 674
 675 static int btusb_send_frame(struct sk_buff *skb)
 676 {
 677         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 678         struct btusb_data *data = hdev->driver_data;
 679         struct usb_ctrlrequest *dr;
 680         struct urb *urb;
 681         unsigned int pipe;
 682         int err;
 683
 684         BT_DBG("%s", hdev->name);
 685
 686         if (!test_bit(HCI_RUNNING, &hdev->flags))
 687                 return -EBUSY;
 688
 689         switch (bt_cb(skb)->pkt_type) {
 690         case HCI_COMMAND_PKT:
 691                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 692                 if (!urb)
 693                         return -ENOMEM;
 694
 695                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 696                 if (!dr) {
 697                         usb_free_urb(urb);
 698                         return -ENOMEM;
 699                 }
 700
 701                 dr->bRequestType = data->cmdreq_type;
 702                 dr->bRequest     = 0;
 703                 dr->wIndex       = 0;
 704                 dr->wValue       = 0;
 705                 dr->wLength      = __cpu_to_le16(skb->len);
 706
 707                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 708
 709                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 710                                 skb->data, skb->len, btusb_tx_complete, skb);
 711
 712                 hdev->stat.cmd_tx++;
 713                 break;
 714
 715         case HCI_ACLDATA_PKT:
 716                 if (!data->bulk_tx_ep)
 717                         return -ENODEV;
 718
 719                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 720                 if (!urb)
 721                         return -ENOMEM;
 722
 723                 pipe = usb_sndbulkpipe(data->udev,
 724                                         data->bulk_tx_ep->bEndpointAddress);
 725
 726                 usb_fill_bulk_urb(urb, data->udev, pipe,
 727                                 skb->data, skb->len, btusb_tx_complete, skb);
 728
 729                 if (skb->priority >= HCI_PRIO_MAX - 1)
 730                         urb->transfer_flags  = URB_ISO_ASAP;
 731
 732                 hdev->stat.acl_tx++;
 733                 break;
 734
 735         case HCI_SCODATA_PKT:
 736                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 737                         return -ENODEV;
 738
 739                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 740                 if (!urb)
 741                         return -ENOMEM;
 742
 743                 pipe = usb_sndisocpipe(data->udev,
 744                                         data->isoc_tx_ep->bEndpointAddress);
 745
 746                 usb_fill_int_urb(urb, data->udev, pipe,
 747                                 skb->data, skb->len, btusb_isoc_tx_complete,
 748                                 skb, data->isoc_tx_ep->bInterval);
 749
 750                 urb->transfer_flags  = URB_ISO_ASAP;
 751
 752                 __fill_isoc_descriptor(urb, skb->len,
 753                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 754
 755                 hdev->stat.sco_tx++;
 756                 goto skip_waking;
 757
 758         default:
 759                 return -EILSEQ;
 760         }
 761
 762         err = inc_tx(data);
 763         if (err) {
 764                 usb_anchor_urb(urb, &data->deferred);
 765                 schedule_work(&data->waker);
 766                 err = 0;
 767                 goto done;
 768         }
 769
 770 skip_waking:
 771         usb_anchor_urb(urb, &data->tx_anchor);
 772
 773         err = usb_submit_urb(urb, GFP_ATOMIC);
 774         if (err < 0) {
 775                 if (err != -EPERM && err != -ENODEV)
 776                         BT_ERR("%s urb %p submission failed (%d)",
 777                                                 hdev->name, urb, -err);
 778                 kfree(urb->setup_packet);
 779                 usb_unanchor_urb(urb);
 780         } else {
 781                 usb_mark_last_busy(data->udev);
 782         }
 783
 784 done:
 785         usb_free_urb(urb);
 786         return err;
 787 }
 788
 789 static void btusb_destruct(struct hci_dev *hdev)
 790 {
 791         struct btusb_data *data = hdev->driver_data;
 792
 793         BT_DBG("%s", hdev->name);
 794
 795         kfree(data);
 796 }
 797
 798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 799 {
 800         struct btusb_data *data = hdev->driver_data;
 801
 802         BT_DBG("%s evt %d", hdev->name, evt);
 803
 804         if (hdev->conn_hash.sco_num != data->sco_num) {
 805                 data->sco_num = hdev->conn_hash.sco_num;
 806                 schedule_work(&data->work);
 807         }
 808 }
 809
 810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 811 {
 812         struct btusb_data *data = hdev->driver_data;
 813         struct usb_interface *intf = data->isoc;
 814         struct usb_endpoint_descriptor *ep_desc;
 815         int i, err;
 816
 817         if (!data->isoc)
 818                 return -ENODEV;
 819
 820         err = usb_set_interface(data->udev, 1, altsetting);
 821         if (err < 0) {
 822                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 823                 return err;
 824         }
 825
 826         data->isoc_altsetting = altsetting;
 827
 828         data->isoc_tx_ep = NULL;
 829         data->isoc_rx_ep = NULL;
 830
 831         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 832                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 833
 834                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 835                         data->isoc_tx_ep = ep_desc;
 836                         continue;
 837                 }
 838
 839                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 840                         data->isoc_rx_ep = ep_desc;
 841                         continue;
 842                 }
 843         }
 844
 845         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 846                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 847                 return -ENODEV;
 848         }
 849
 850         return 0;
 851 }
 852
 853 static void btusb_work(struct work_struct *work)
 854 {
 855         struct btusb_data *data = container_of(work, struct btusb_data, work);
 856         struct hci_dev *hdev = data->hdev;
 857         int err;
 858
 859         if (hdev->conn_hash.sco_num > 0) {
 860                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 861                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 862                         if (err < 0) {
 863                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 864                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 865                                 return;
 866                         }
 867
 868                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 869                 }
 870                 if (data->isoc_altsetting != 2) {
 871                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 872                         usb_kill_anchored_urbs(&data->isoc_anchor);
 873
 874                         if (__set_isoc_interface(hdev, 2) < 0)
 875                                 return;
 876                 }
 877
 878                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 879                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 880                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 881                         else
 882                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 883                 }
 884         } else {
 885                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 886                 usb_kill_anchored_urbs(&data->isoc_anchor);
 887
 888                 __set_isoc_interface(hdev, 0);
 889                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 890                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 891         }
 892 }
 893
 894 static void btusb_waker(struct work_struct *work)
 895 {
 896         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 897         int err;
 898
 899         err = usb_autopm_get_interface(data->intf);
 900         if (err < 0)
 901                 return;
 902
 903         usb_autopm_put_interface(data->intf);
 904 }
 905
 906 static int btusb_probe(struct usb_interface *intf,
 907                                 const struct usb_device_id *id)
 908 {
 909         struct usb_endpoint_descriptor *ep_desc;
 910         struct btusb_data *data;
 911         struct hci_dev *hdev;
 912         int i, err;
 913
 914         BT_DBG("intf %p id %p", intf, id);
 915
 916         /* interface numbers are hardcoded in the spec */
 917         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 918                 return -ENODEV;
 919
 920         if (!id->driver_info) {
 921                 const struct usb_device_id *match;
 922                 match = usb_match_id(intf, blacklist_table);
 923                 if (match)
 924                         id = match;
 925         }
 926
 927         if (id->driver_info == BTUSB_IGNORE)
 928                 return -ENODEV;
 929
 930         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 931                 return -ENODEV;
 932
 933         if (ignore_csr && id->driver_info & BTUSB_CSR)
 934                 return -ENODEV;
 935
 936         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 937                 return -ENODEV;
 938
 939         if (id->driver_info & BTUSB_ATH3012) {
 940                 struct usb_device *udev = interface_to_usbdev(intf);
 941
 942                 /* Old firmware would otherwise let ath3k driver load
 943                  * patch and sysconfig files */
 944                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 945                         return -ENODEV;
 946         }
 947
 948         data = kzalloc(sizeof(*data), GFP_KERNEL);
 949         if (!data)
 950                 return -ENOMEM;
 951
 952         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 953                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 954
 955                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 956                         data->intr_ep = ep_desc;
 957                         continue;
 958                 }
 959
 960                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 961                         data->bulk_tx_ep = ep_desc;
 962                         continue;
 963                 }
 964
 965                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 966                         data->bulk_rx_ep = ep_desc;
 967                         continue;
 968                 }
 969         }
 970
 971         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 972                 kfree(data);
 973                 return -ENODEV;
 974         }
 975
 976         data->cmdreq_type = USB_TYPE_CLASS;
 977
 978         data->udev = interface_to_usbdev(intf);
 979         data->intf = intf;
 980
 981         spin_lock_init(&data->lock);
 982
 983         INIT_WORK(&data->work, btusb_work);
 984         INIT_WORK(&data->waker, btusb_waker);
 985         spin_lock_init(&data->txlock);
 986
 987         init_usb_anchor(&data->tx_anchor);
 988         init_usb_anchor(&data->intr_anchor);
 989         init_usb_anchor(&data->bulk_anchor);
 990         init_usb_anchor(&data->isoc_anchor);
 991         init_usb_anchor(&data->deferred);
 992
 993         hdev = hci_alloc_dev();
 994         if (!hdev) {
 995                 kfree(data);
 996                 return -ENOMEM;
 997         }
 998
 999         hdev->bus = HCI_USB;
1000         hdev->driver_data = data;
1001
1002         data->hdev = hdev;
1003
1004         SET_HCIDEV_DEV(hdev, &intf->dev);
1005
1006         hdev->open     = btusb_open;
1007         hdev->close    = btusb_close;
1008         hdev->flush    = btusb_flush;
1009         hdev->send     = btusb_send_frame;
1010         hdev->destruct = btusb_destruct;
1011         hdev->notify   = btusb_notify;
1012
1013         hdev->owner = THIS_MODULE;
1014
1015         /* Interface numbers are hardcoded in the specification */
1016         data->isoc = usb_ifnum_to_if(data->udev, 1);
1017
1018         if (!reset)
1019                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1020
1021         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1022                 if (!disable_scofix)
1023                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1024         }
1025
1026         if (id->driver_info & BTUSB_BROKEN_ISOC)
1027                 data->isoc = NULL;
1028
1029         if (id->driver_info & BTUSB_DIGIANSWER) {
1030                 data->cmdreq_type = USB_TYPE_VENDOR;
1031                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032         }
1033
1034         if (id->driver_info & BTUSB_CSR) {
1035                 struct usb_device *udev = data->udev;
1036
1037                 /* Old firmware would otherwise execute USB reset */
1038                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1039                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1040         }
1041
1042         if (id->driver_info & BTUSB_SNIFFER) {
1043                 struct usb_device *udev = data->udev;
1044
1045                 /* New sniffer firmware has crippled HCI interface */
1046                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1047                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1048
1049                 data->isoc = NULL;
1050         }
1051
1052         if (id->driver_info & BTUSB_BCM92035) {
1053                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1054                 struct sk_buff *skb;
1055
1056                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1057                 if (skb) {
1058                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1059                         skb_queue_tail(&hdev->driver_init, skb);
1060                 }
1061         }
1062
1063         if (data->isoc) {
1064                 err = usb_driver_claim_interface(&btusb_driver,
1065                                                         data->isoc, data);
1066                 if (err < 0) {
1067                         hci_free_dev(hdev);
1068                         kfree(data);
1069                         return err;
1070                 }
1071         }
1072
1073         err = hci_register_dev(hdev);
1074         if (err < 0) {
1075                 hci_free_dev(hdev);
1076                 kfree(data);
1077                 return err;
1078         }
1079
1080         usb_set_intfdata(intf, data);
1081
1082         return 0;
1083 }
1084
1085 static void btusb_disconnect(struct usb_interface *intf)
1086 {
1087         struct btusb_data *data = usb_get_intfdata(intf);
1088         struct hci_dev *hdev;
1089
1090         BT_DBG("intf %p", intf);
1091
1092         if (!data)
1093                 return;
1094
1095         hdev = data->hdev;
1096
1097         __hci_dev_hold(hdev);
1098
1099         usb_set_intfdata(data->intf, NULL);
1100
1101         if (data->isoc)
1102                 usb_set_intfdata(data->isoc, NULL);
1103
1104         hci_unregister_dev(hdev);
1105
1106         if (intf == data->isoc)
1107                 usb_driver_release_interface(&btusb_driver, data->intf);
1108         else if (data->isoc)
1109                 usb_driver_release_interface(&btusb_driver, data->isoc);
1110
1111         __hci_dev_put(hdev);
1112
1113         hci_free_dev(hdev);
1114 }
1115
1116 #ifdef CONFIG_PM
1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1118 {
1119         struct btusb_data *data = usb_get_intfdata(intf);
1120
1121         BT_DBG("intf %p", intf);
1122
1123         if (data->suspend_count++)
1124                 return 0;
1125
1126         spin_lock_irq(&data->txlock);
1127         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1128                 set_bit(BTUSB_SUSPENDING, &data->flags);
1129                 spin_unlock_irq(&data->txlock);
1130         } else {
1131                 spin_unlock_irq(&data->txlock);
1132                 data->suspend_count--;
1133                 return -EBUSY;
1134         }
1135
1136         cancel_work_sync(&data->work);
1137
1138         btusb_stop_traffic(data);
1139         usb_kill_anchored_urbs(&data->tx_anchor);
1140
1141         return 0;
1142 }
1143
1144 static void play_deferred(struct btusb_data *data)
1145 {
1146         struct urb *urb;
1147         int err;
1148
1149         while ((urb = usb_get_from_anchor(&data->deferred))) {
1150                 err = usb_submit_urb(urb, GFP_ATOMIC);
1151                 if (err < 0)
1152                         break;
1153
1154                 data->tx_in_flight++;
1155         }
1156         usb_scuttle_anchored_urbs(&data->deferred);
1157 }
1158
1159 static int btusb_resume(struct usb_interface *intf)
1160 {
1161         struct btusb_data *data = usb_get_intfdata(intf);
1162         struct hci_dev *hdev = data->hdev;
1163         int err = 0;
1164
1165         BT_DBG("intf %p", intf);
1166
1167         if (--data->suspend_count)
1168                 return 0;
1169
1170         if (!test_bit(HCI_RUNNING, &hdev->flags))
1171                 goto done;
1172
1173         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1174                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1175                 if (err < 0) {
1176                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1177                         goto failed;
1178                 }
1179         }
1180
1181         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1182                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183                 if (err < 0) {
1184                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1185                         goto failed;
1186                 }
1187
1188                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1189         }
1190
1191         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1192                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1193                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1194                 else
1195                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1196         }
1197
1198         spin_lock_irq(&data->txlock);
1199         play_deferred(data);
1200         clear_bit(BTUSB_SUSPENDING, &data->flags);
1201         spin_unlock_irq(&data->txlock);
1202         schedule_work(&data->work);
1203
1204         return 0;
1205
1206 failed:
1207         usb_scuttle_anchored_urbs(&data->deferred);
1208 done:
1209         spin_lock_irq(&data->txlock);
1210         clear_bit(BTUSB_SUSPENDING, &data->flags);
1211         spin_unlock_irq(&data->txlock);
1212
1213         return err;
1214 }
1215 #endif
1216
1217 static struct usb_driver btusb_driver = {
1218         .name           = "btusb",
1219         .probe          = btusb_probe,
1220         .disconnect     = btusb_disconnect,
1221 #ifdef CONFIG_PM
1222         .suspend        = btusb_suspend,
1223         .resume         = btusb_resume,
1224 #endif
1225         .id_table       = btusb_table,
1226         .supports_autosuspend = 1,
1227 };
1228
1229 module_usb_driver(btusb_driver);
1230
1231 module_param(ignore_dga, bool, 0644);
1232 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1233
1234 module_param(ignore_csr, bool, 0644);
1235 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1236
1237 module_param(ignore_sniffer, bool, 0644);
1238 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1239
1240 module_param(disable_scofix, bool, 0644);
1241 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1242
1243 module_param(force_scofix, bool, 0644);
1244 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1245
1246 module_param(reset, bool, 0644);
1247 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1248
1249 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1250 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1251 MODULE_VERSION(VERSION);
1252 MODULE_LICENSE("GPL");