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(0x0a5c, 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, 0x21e6) },
 106         { USB_DEVICE(0x0a5c, 0x21e8) },
 107         { USB_DEVICE(0x0a5c, 0x21f3) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         { }     /* Terminating entry */
 111 };
 112
 113 MODULE_DEVICE_TABLE(usb, btusb_table);
 114
 115 static struct usb_device_id blacklist_table[] = {
 116         /* CSR BlueCore devices */
 117         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 118
 119         /* Broadcom BCM2033 without firmware */
 120         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 121
 122         /* Atheros 3011 with sflash firmware */
 123         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 124         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 126         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros AR9285 Malbec with sflash firmware */
 129         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 130
 131         /* Atheros 3012 with sflash firmware */
 132         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 136
 137         /* Atheros AR5BBU12 with sflash firmware */
 138         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 139
 140         /* Broadcom BCM2035 */
 141         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 142         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 144
 145         /* Broadcom BCM2045 */
 146         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 147         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 148
 149         /* IBM/Lenovo ThinkPad with Broadcom chip */
 150         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 151         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* HP laptop with Broadcom chip */
 154         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* Dell laptop with Broadcom chip */
 157         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* Dell Wireless 370 and 410 devices */
 160         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 161         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163         /* Belkin F8T012 and F8T013 devices */
 164         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 165         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 166
 167         /* Asus WL-BTD202 device */
 168         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170         /* Kensington Bluetooth USB adapter */
 171         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 172
 173         /* RTX Telecom based adapters with buggy SCO support */
 174         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 175         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 176
 177         /* CONWISE Technology based adapters with buggy SCO support */
 178         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 179
 180         /* Digianswer devices */
 181         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 182         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 183
 184         /* CSR BlueCore Bluetooth Sniffer */
 185         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 186
 187         /* Frontline ComProbe Bluetooth Sniffer */
 188         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 189
 190         { }     /* Terminating entry */
 191 };
 192
 193 #define BTUSB_MAX_ISOC_FRAMES   10
 194
 195 #define BTUSB_INTR_RUNNING      0
 196 #define BTUSB_BULK_RUNNING      1
 197 #define BTUSB_ISOC_RUNNING      2
 198 #define BTUSB_SUSPENDING        3
 199 #define BTUSB_DID_ISO_RESUME    4
 200
 201 struct btusb_data {
 202         struct hci_dev       *hdev;
 203         struct usb_device    *udev;
 204         struct usb_interface *intf;
 205         struct usb_interface *isoc;
 206
 207         spinlock_t lock;
 208
 209         unsigned long flags;
 210
 211         struct work_struct work;
 212         struct work_struct waker;
 213
 214         struct usb_anchor tx_anchor;
 215         struct usb_anchor intr_anchor;
 216         struct usb_anchor bulk_anchor;
 217         struct usb_anchor isoc_anchor;
 218         struct usb_anchor deferred;
 219         int tx_in_flight;
 220         spinlock_t txlock;
 221
 222         struct usb_endpoint_descriptor *intr_ep;
 223         struct usb_endpoint_descriptor *bulk_tx_ep;
 224         struct usb_endpoint_descriptor *bulk_rx_ep;
 225         struct usb_endpoint_descriptor *isoc_tx_ep;
 226         struct usb_endpoint_descriptor *isoc_rx_ep;
 227
 228         __u8 cmdreq_type;
 229
 230         unsigned int sco_num;
 231         int isoc_altsetting;
 232         int suspend_count;
 233 };
 234
 235 static int inc_tx(struct btusb_data *data)
 236 {
 237         unsigned long flags;
 238         int rv;
 239
 240         spin_lock_irqsave(&data->txlock, flags);
 241         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 242         if (!rv)
 243                 data->tx_in_flight++;
 244         spin_unlock_irqrestore(&data->txlock, flags);
 245
 246         return rv;
 247 }
 248
 249 static void btusb_intr_complete(struct urb *urb)
 250 {
 251         struct hci_dev *hdev = urb->context;
 252         struct btusb_data *data = hci_get_drvdata(hdev);
 253         int err;
 254
 255         BT_DBG("%s urb %p status %d count %d", hdev->name,
 256                                         urb, urb->status, urb->actual_length);
 257
 258         if (!test_bit(HCI_RUNNING, &hdev->flags))
 259                 return;
 260
 261         if (urb->status == 0) {
 262                 hdev->stat.byte_rx += urb->actual_length;
 263
 264                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 265                                                 urb->transfer_buffer,
 266                                                 urb->actual_length) < 0) {
 267                         BT_ERR("%s corrupted event packet", hdev->name);
 268                         hdev->stat.err_rx++;
 269                 }
 270         }
 271
 272         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 273                 return;
 274
 275         usb_mark_last_busy(data->udev);
 276         usb_anchor_urb(urb, &data->intr_anchor);
 277
 278         err = usb_submit_urb(urb, GFP_ATOMIC);
 279         if (err < 0) {
 280                 /* -EPERM: urb is being killed;
 281                  * -ENODEV: device got disconnected */
 282                 if (err != -EPERM && err != -ENODEV)
 283                         BT_ERR("%s urb %p failed to resubmit (%d)",
 284                                                 hdev->name, urb, -err);
 285                 usb_unanchor_urb(urb);
 286         }
 287 }
 288
 289 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 290 {
 291         struct btusb_data *data = hci_get_drvdata(hdev);
 292         struct urb *urb;
 293         unsigned char *buf;
 294         unsigned int pipe;
 295         int err, size;
 296
 297         BT_DBG("%s", hdev->name);
 298
 299         if (!data->intr_ep)
 300                 return -ENODEV;
 301
 302         urb = usb_alloc_urb(0, mem_flags);
 303         if (!urb)
 304                 return -ENOMEM;
 305
 306         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 307
 308         buf = kmalloc(size, mem_flags);
 309         if (!buf) {
 310                 usb_free_urb(urb);
 311                 return -ENOMEM;
 312         }
 313
 314         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 315
 316         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 317                                                 btusb_intr_complete, hdev,
 318                                                 data->intr_ep->bInterval);
 319
 320         urb->transfer_flags |= URB_FREE_BUFFER;
 321
 322         usb_anchor_urb(urb, &data->intr_anchor);
 323
 324         err = usb_submit_urb(urb, mem_flags);
 325         if (err < 0) {
 326                 if (err != -EPERM && err != -ENODEV)
 327                         BT_ERR("%s urb %p submission failed (%d)",
 328                                                 hdev->name, urb, -err);
 329                 usb_unanchor_urb(urb);
 330         }
 331
 332         usb_free_urb(urb);
 333
 334         return err;
 335 }
 336
 337 static void btusb_bulk_complete(struct urb *urb)
 338 {
 339         struct hci_dev *hdev = urb->context;
 340         struct btusb_data *data = hci_get_drvdata(hdev);
 341         int err;
 342
 343         BT_DBG("%s urb %p status %d count %d", hdev->name,
 344                                         urb, urb->status, urb->actual_length);
 345
 346         if (!test_bit(HCI_RUNNING, &hdev->flags))
 347                 return;
 348
 349         if (urb->status == 0) {
 350                 hdev->stat.byte_rx += urb->actual_length;
 351
 352                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 353                                                 urb->transfer_buffer,
 354                                                 urb->actual_length) < 0) {
 355                         BT_ERR("%s corrupted ACL packet", hdev->name);
 356                         hdev->stat.err_rx++;
 357                 }
 358         }
 359
 360         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 361                 return;
 362
 363         usb_anchor_urb(urb, &data->bulk_anchor);
 364         usb_mark_last_busy(data->udev);
 365
 366         err = usb_submit_urb(urb, GFP_ATOMIC);
 367         if (err < 0) {
 368                 /* -EPERM: urb is being killed;
 369                  * -ENODEV: device got disconnected */
 370                 if (err != -EPERM && err != -ENODEV)
 371                         BT_ERR("%s urb %p failed to resubmit (%d)",
 372                                                 hdev->name, urb, -err);
 373                 usb_unanchor_urb(urb);
 374         }
 375 }
 376
 377 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 378 {
 379         struct btusb_data *data = hci_get_drvdata(hdev);
 380         struct urb *urb;
 381         unsigned char *buf;
 382         unsigned int pipe;
 383         int err, size = HCI_MAX_FRAME_SIZE;
 384
 385         BT_DBG("%s", hdev->name);
 386
 387         if (!data->bulk_rx_ep)
 388                 return -ENODEV;
 389
 390         urb = usb_alloc_urb(0, mem_flags);
 391         if (!urb)
 392                 return -ENOMEM;
 393
 394         buf = kmalloc(size, mem_flags);
 395         if (!buf) {
 396                 usb_free_urb(urb);
 397                 return -ENOMEM;
 398         }
 399
 400         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 401
 402         usb_fill_bulk_urb(urb, data->udev, pipe,
 403                                         buf, size, btusb_bulk_complete, hdev);
 404
 405         urb->transfer_flags |= URB_FREE_BUFFER;
 406
 407         usb_mark_last_busy(data->udev);
 408         usb_anchor_urb(urb, &data->bulk_anchor);
 409
 410         err = usb_submit_urb(urb, mem_flags);
 411         if (err < 0) {
 412                 if (err != -EPERM && err != -ENODEV)
 413                         BT_ERR("%s urb %p submission failed (%d)",
 414                                                 hdev->name, urb, -err);
 415                 usb_unanchor_urb(urb);
 416         }
 417
 418         usb_free_urb(urb);
 419
 420         return err;
 421 }
 422
 423 static void btusb_isoc_complete(struct urb *urb)
 424 {
 425         struct hci_dev *hdev = urb->context;
 426         struct btusb_data *data = hci_get_drvdata(hdev);
 427         int i, err;
 428
 429         BT_DBG("%s urb %p status %d count %d", hdev->name,
 430                                         urb, urb->status, urb->actual_length);
 431
 432         if (!test_bit(HCI_RUNNING, &hdev->flags))
 433                 return;
 434
 435         if (urb->status == 0) {
 436                 for (i = 0; i < urb->number_of_packets; i++) {
 437                         unsigned int offset = urb->iso_frame_desc[i].offset;
 438                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 439
 440                         if (urb->iso_frame_desc[i].status)
 441                                 continue;
 442
 443                         hdev->stat.byte_rx += length;
 444
 445                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 446                                                 urb->transfer_buffer + offset,
 447                                                                 length) < 0) {
 448                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 449                                 hdev->stat.err_rx++;
 450                         }
 451                 }
 452         }
 453
 454         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 455                 return;
 456
 457         usb_anchor_urb(urb, &data->isoc_anchor);
 458
 459         err = usb_submit_urb(urb, GFP_ATOMIC);
 460         if (err < 0) {
 461                 /* -EPERM: urb is being killed;
 462                  * -ENODEV: device got disconnected */
 463                 if (err != -EPERM && err != -ENODEV)
 464                         BT_ERR("%s urb %p failed to resubmit (%d)",
 465                                                 hdev->name, urb, -err);
 466                 usb_unanchor_urb(urb);
 467         }
 468 }
 469
 470 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 471 {
 472         int i, offset = 0;
 473
 474         BT_DBG("len %d mtu %d", len, mtu);
 475
 476         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 477                                         i++, offset += mtu, len -= mtu) {
 478                 urb->iso_frame_desc[i].offset = offset;
 479                 urb->iso_frame_desc[i].length = mtu;
 480         }
 481
 482         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 483                 urb->iso_frame_desc[i].offset = offset;
 484                 urb->iso_frame_desc[i].length = len;
 485                 i++;
 486         }
 487
 488         urb->number_of_packets = i;
 489 }
 490
 491 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 492 {
 493         struct btusb_data *data = hci_get_drvdata(hdev);
 494         struct urb *urb;
 495         unsigned char *buf;
 496         unsigned int pipe;
 497         int err, size;
 498
 499         BT_DBG("%s", hdev->name);
 500
 501         if (!data->isoc_rx_ep)
 502                 return -ENODEV;
 503
 504         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 505         if (!urb)
 506                 return -ENOMEM;
 507
 508         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 509                                                 BTUSB_MAX_ISOC_FRAMES;
 510
 511         buf = kmalloc(size, mem_flags);
 512         if (!buf) {
 513                 usb_free_urb(urb);
 514                 return -ENOMEM;
 515         }
 516
 517         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 518
 519         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 520                                 hdev, data->isoc_rx_ep->bInterval);
 521
 522         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 523
 524         __fill_isoc_descriptor(urb, size,
 525                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 526
 527         usb_anchor_urb(urb, &data->isoc_anchor);
 528
 529         err = usb_submit_urb(urb, mem_flags);
 530         if (err < 0) {
 531                 if (err != -EPERM && err != -ENODEV)
 532                         BT_ERR("%s urb %p submission failed (%d)",
 533                                                 hdev->name, urb, -err);
 534                 usb_unanchor_urb(urb);
 535         }
 536
 537         usb_free_urb(urb);
 538
 539         return err;
 540 }
 541
 542 static void btusb_tx_complete(struct urb *urb)
 543 {
 544         struct sk_buff *skb = urb->context;
 545         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 546         struct btusb_data *data = hci_get_drvdata(hdev);
 547
 548         BT_DBG("%s urb %p status %d count %d", hdev->name,
 549                                         urb, urb->status, urb->actual_length);
 550
 551         if (!test_bit(HCI_RUNNING, &hdev->flags))
 552                 goto done;
 553
 554         if (!urb->status)
 555                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 556         else
 557                 hdev->stat.err_tx++;
 558
 559 done:
 560         spin_lock(&data->txlock);
 561         data->tx_in_flight--;
 562         spin_unlock(&data->txlock);
 563
 564         kfree(urb->setup_packet);
 565
 566         kfree_skb(skb);
 567 }
 568
 569 static void btusb_isoc_tx_complete(struct urb *urb)
 570 {
 571         struct sk_buff *skb = urb->context;
 572         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 573
 574         BT_DBG("%s urb %p status %d count %d", hdev->name,
 575                                         urb, urb->status, urb->actual_length);
 576
 577         if (!test_bit(HCI_RUNNING, &hdev->flags))
 578                 goto done;
 579
 580         if (!urb->status)
 581                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 582         else
 583                 hdev->stat.err_tx++;
 584
 585 done:
 586         kfree(urb->setup_packet);
 587
 588         kfree_skb(skb);
 589 }
 590
 591 static int btusb_open(struct hci_dev *hdev)
 592 {
 593         struct btusb_data *data = hci_get_drvdata(hdev);
 594         int err;
 595
 596         BT_DBG("%s", hdev->name);
 597
 598         err = usb_autopm_get_interface(data->intf);
 599         if (err < 0)
 600                 return err;
 601
 602         data->intf->needs_remote_wakeup = 1;
 603
 604         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 605                 goto done;
 606
 607         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 608                 goto done;
 609
 610         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 611         if (err < 0)
 612                 goto failed;
 613
 614         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 615         if (err < 0) {
 616                 usb_kill_anchored_urbs(&data->intr_anchor);
 617                 goto failed;
 618         }
 619
 620         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 621         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 622
 623 done:
 624         usb_autopm_put_interface(data->intf);
 625         return 0;
 626
 627 failed:
 628         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 629         clear_bit(HCI_RUNNING, &hdev->flags);
 630         usb_autopm_put_interface(data->intf);
 631         return err;
 632 }
 633
 634 static void btusb_stop_traffic(struct btusb_data *data)
 635 {
 636         usb_kill_anchored_urbs(&data->intr_anchor);
 637         usb_kill_anchored_urbs(&data->bulk_anchor);
 638         usb_kill_anchored_urbs(&data->isoc_anchor);
 639 }
 640
 641 static int btusb_close(struct hci_dev *hdev)
 642 {
 643         struct btusb_data *data = hci_get_drvdata(hdev);
 644         int err;
 645
 646         BT_DBG("%s", hdev->name);
 647
 648         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 649                 return 0;
 650
 651         cancel_work_sync(&data->work);
 652         cancel_work_sync(&data->waker);
 653
 654         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 655         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 656         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 657
 658         btusb_stop_traffic(data);
 659         err = usb_autopm_get_interface(data->intf);
 660         if (err < 0)
 661                 goto failed;
 662
 663         data->intf->needs_remote_wakeup = 0;
 664         usb_autopm_put_interface(data->intf);
 665
 666 failed:
 667         usb_scuttle_anchored_urbs(&data->deferred);
 668         return 0;
 669 }
 670
 671 static int btusb_flush(struct hci_dev *hdev)
 672 {
 673         struct btusb_data *data = hci_get_drvdata(hdev);
 674
 675         BT_DBG("%s", hdev->name);
 676
 677         usb_kill_anchored_urbs(&data->tx_anchor);
 678
 679         return 0;
 680 }
 681
 682 static int btusb_send_frame(struct sk_buff *skb)
 683 {
 684         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 685         struct btusb_data *data = hci_get_drvdata(hdev);
 686         struct usb_ctrlrequest *dr;
 687         struct urb *urb;
 688         unsigned int pipe;
 689         int err;
 690
 691         BT_DBG("%s", hdev->name);
 692
 693         if (!test_bit(HCI_RUNNING, &hdev->flags))
 694                 return -EBUSY;
 695
 696         switch (bt_cb(skb)->pkt_type) {
 697         case HCI_COMMAND_PKT:
 698                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 699                 if (!urb)
 700                         return -ENOMEM;
 701
 702                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 703                 if (!dr) {
 704                         usb_free_urb(urb);
 705                         return -ENOMEM;
 706                 }
 707
 708                 dr->bRequestType = data->cmdreq_type;
 709                 dr->bRequest     = 0;
 710                 dr->wIndex       = 0;
 711                 dr->wValue       = 0;
 712                 dr->wLength      = __cpu_to_le16(skb->len);
 713
 714                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 715
 716                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 717                                 skb->data, skb->len, btusb_tx_complete, skb);
 718
 719                 hdev->stat.cmd_tx++;
 720                 break;
 721
 722         case HCI_ACLDATA_PKT:
 723                 if (!data->bulk_tx_ep)
 724                         return -ENODEV;
 725
 726                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 727                 if (!urb)
 728                         return -ENOMEM;
 729
 730                 pipe = usb_sndbulkpipe(data->udev,
 731                                         data->bulk_tx_ep->bEndpointAddress);
 732
 733                 usb_fill_bulk_urb(urb, data->udev, pipe,
 734                                 skb->data, skb->len, btusb_tx_complete, skb);
 735
 736                 hdev->stat.acl_tx++;
 737                 break;
 738
 739         case HCI_SCODATA_PKT:
 740                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 741                         return -ENODEV;
 742
 743                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 744                 if (!urb)
 745                         return -ENOMEM;
 746
 747                 pipe = usb_sndisocpipe(data->udev,
 748                                         data->isoc_tx_ep->bEndpointAddress);
 749
 750                 usb_fill_int_urb(urb, data->udev, pipe,
 751                                 skb->data, skb->len, btusb_isoc_tx_complete,
 752                                 skb, data->isoc_tx_ep->bInterval);
 753
 754                 urb->transfer_flags  = URB_ISO_ASAP;
 755
 756                 __fill_isoc_descriptor(urb, skb->len,
 757                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 758
 759                 hdev->stat.sco_tx++;
 760                 goto skip_waking;
 761
 762         default:
 763                 return -EILSEQ;
 764         }
 765
 766         err = inc_tx(data);
 767         if (err) {
 768                 usb_anchor_urb(urb, &data->deferred);
 769                 schedule_work(&data->waker);
 770                 err = 0;
 771                 goto done;
 772         }
 773
 774 skip_waking:
 775         usb_anchor_urb(urb, &data->tx_anchor);
 776
 777         err = usb_submit_urb(urb, GFP_ATOMIC);
 778         if (err < 0) {
 779                 if (err != -EPERM && err != -ENODEV)
 780                         BT_ERR("%s urb %p submission failed (%d)",
 781                                                 hdev->name, urb, -err);
 782                 kfree(urb->setup_packet);
 783                 usb_unanchor_urb(urb);
 784         } else {
 785                 usb_mark_last_busy(data->udev);
 786         }
 787
 788 done:
 789         usb_free_urb(urb);
 790         return err;
 791 }
 792
 793 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 794 {
 795         struct btusb_data *data = hci_get_drvdata(hdev);
 796
 797         BT_DBG("%s evt %d", hdev->name, evt);
 798
 799         if (hdev->conn_hash.sco_num != data->sco_num) {
 800                 data->sco_num = hdev->conn_hash.sco_num;
 801                 schedule_work(&data->work);
 802         }
 803 }
 804
 805 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 806 {
 807         struct btusb_data *data = hci_get_drvdata(hdev);
 808         struct usb_interface *intf = data->isoc;
 809         struct usb_endpoint_descriptor *ep_desc;
 810         int i, err;
 811
 812         if (!data->isoc)
 813                 return -ENODEV;
 814
 815         err = usb_set_interface(data->udev, 1, altsetting);
 816         if (err < 0) {
 817                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 818                 return err;
 819         }
 820
 821         data->isoc_altsetting = altsetting;
 822
 823         data->isoc_tx_ep = NULL;
 824         data->isoc_rx_ep = NULL;
 825
 826         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 827                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 828
 829                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 830                         data->isoc_tx_ep = ep_desc;
 831                         continue;
 832                 }
 833
 834                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 835                         data->isoc_rx_ep = ep_desc;
 836                         continue;
 837                 }
 838         }
 839
 840         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 841                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 842                 return -ENODEV;
 843         }
 844
 845         return 0;
 846 }
 847
 848 static void btusb_work(struct work_struct *work)
 849 {
 850         struct btusb_data *data = container_of(work, struct btusb_data, work);
 851         struct hci_dev *hdev = data->hdev;
 852         int err;
 853
 854         if (hdev->conn_hash.sco_num > 0) {
 855                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 856                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 857                         if (err < 0) {
 858                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 859                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 860                                 return;
 861                         }
 862
 863                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 864                 }
 865                 if (data->isoc_altsetting != 2) {
 866                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 867                         usb_kill_anchored_urbs(&data->isoc_anchor);
 868
 869                         if (__set_isoc_interface(hdev, 2) < 0)
 870                                 return;
 871                 }
 872
 873                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 874                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 875                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 876                         else
 877                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 878                 }
 879         } else {
 880                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 881                 usb_kill_anchored_urbs(&data->isoc_anchor);
 882
 883                 __set_isoc_interface(hdev, 0);
 884                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 885                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 886         }
 887 }
 888
 889 static void btusb_waker(struct work_struct *work)
 890 {
 891         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 892         int err;
 893
 894         err = usb_autopm_get_interface(data->intf);
 895         if (err < 0)
 896                 return;
 897
 898         usb_autopm_put_interface(data->intf);
 899 }
 900
 901 static int btusb_probe(struct usb_interface *intf,
 902                                 const struct usb_device_id *id)
 903 {
 904         struct usb_endpoint_descriptor *ep_desc;
 905         struct btusb_data *data;
 906         struct hci_dev *hdev;
 907         int i, err;
 908
 909         BT_DBG("intf %p id %p", intf, id);
 910
 911         /* interface numbers are hardcoded in the spec */
 912         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 913                 return -ENODEV;
 914
 915         if (!id->driver_info) {
 916                 const struct usb_device_id *match;
 917                 match = usb_match_id(intf, blacklist_table);
 918                 if (match)
 919                         id = match;
 920         }
 921
 922         if (id->driver_info == BTUSB_IGNORE)
 923                 return -ENODEV;
 924
 925         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 926                 return -ENODEV;
 927
 928         if (ignore_csr && id->driver_info & BTUSB_CSR)
 929                 return -ENODEV;
 930
 931         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 932                 return -ENODEV;
 933
 934         if (id->driver_info & BTUSB_ATH3012) {
 935                 struct usb_device *udev = interface_to_usbdev(intf);
 936
 937                 /* Old firmware would otherwise let ath3k driver load
 938                  * patch and sysconfig files */
 939                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 940                         return -ENODEV;
 941         }
 942
 943         data = kzalloc(sizeof(*data), GFP_KERNEL);
 944         if (!data)
 945                 return -ENOMEM;
 946
 947         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 948                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 949
 950                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 951                         data->intr_ep = ep_desc;
 952                         continue;
 953                 }
 954
 955                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 956                         data->bulk_tx_ep = ep_desc;
 957                         continue;
 958                 }
 959
 960                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 961                         data->bulk_rx_ep = ep_desc;
 962                         continue;
 963                 }
 964         }
 965
 966         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 967                 kfree(data);
 968                 return -ENODEV;
 969         }
 970
 971         data->cmdreq_type = USB_TYPE_CLASS;
 972
 973         data->udev = interface_to_usbdev(intf);
 974         data->intf = intf;
 975
 976         spin_lock_init(&data->lock);
 977
 978         INIT_WORK(&data->work, btusb_work);
 979         INIT_WORK(&data->waker, btusb_waker);
 980         spin_lock_init(&data->txlock);
 981
 982         init_usb_anchor(&data->tx_anchor);
 983         init_usb_anchor(&data->intr_anchor);
 984         init_usb_anchor(&data->bulk_anchor);
 985         init_usb_anchor(&data->isoc_anchor);
 986         init_usb_anchor(&data->deferred);
 987
 988         hdev = hci_alloc_dev();
 989         if (!hdev) {
 990                 kfree(data);
 991                 return -ENOMEM;
 992         }
 993
 994         hdev->bus = HCI_USB;
 995         hci_set_drvdata(hdev, data);
 996
 997         data->hdev = hdev;
 998
 999         SET_HCIDEV_DEV(hdev, &intf->dev);
1000
1001         hdev->open     = btusb_open;
1002         hdev->close    = btusb_close;
1003         hdev->flush    = btusb_flush;
1004         hdev->send     = btusb_send_frame;
1005         hdev->notify   = btusb_notify;
1006
1007         /* Interface numbers are hardcoded in the specification */
1008         data->isoc = usb_ifnum_to_if(data->udev, 1);
1009
1010         if (!reset)
1011                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1012
1013         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1014                 if (!disable_scofix)
1015                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1016         }
1017
1018         if (id->driver_info & BTUSB_BROKEN_ISOC)
1019                 data->isoc = NULL;
1020
1021         if (id->driver_info & BTUSB_DIGIANSWER) {
1022                 data->cmdreq_type = USB_TYPE_VENDOR;
1023                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1024         }
1025
1026         if (id->driver_info & BTUSB_CSR) {
1027                 struct usb_device *udev = data->udev;
1028
1029                 /* Old firmware would otherwise execute USB reset */
1030                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1031                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1032         }
1033
1034         if (id->driver_info & BTUSB_SNIFFER) {
1035                 struct usb_device *udev = data->udev;
1036
1037                 /* New sniffer firmware has crippled HCI interface */
1038                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1039                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1040
1041                 data->isoc = NULL;
1042         }
1043
1044         if (id->driver_info & BTUSB_BCM92035) {
1045                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1046                 struct sk_buff *skb;
1047
1048                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1049                 if (skb) {
1050                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1051                         skb_queue_tail(&hdev->driver_init, skb);
1052                 }
1053         }
1054
1055         if (data->isoc) {
1056                 err = usb_driver_claim_interface(&btusb_driver,
1057                                                         data->isoc, data);
1058                 if (err < 0) {
1059                         hci_free_dev(hdev);
1060                         kfree(data);
1061                         return err;
1062                 }
1063         }
1064
1065         err = hci_register_dev(hdev);
1066         if (err < 0) {
1067                 hci_free_dev(hdev);
1068                 kfree(data);
1069                 return err;
1070         }
1071
1072         usb_set_intfdata(intf, data);
1073
1074         return 0;
1075 }
1076
1077 static void btusb_disconnect(struct usb_interface *intf)
1078 {
1079         struct btusb_data *data = usb_get_intfdata(intf);
1080         struct hci_dev *hdev;
1081
1082         BT_DBG("intf %p", intf);
1083
1084         if (!data)
1085                 return;
1086
1087         hdev = data->hdev;
1088         usb_set_intfdata(data->intf, NULL);
1089
1090         if (data->isoc)
1091                 usb_set_intfdata(data->isoc, NULL);
1092
1093         hci_unregister_dev(hdev);
1094
1095         if (intf == data->isoc)
1096                 usb_driver_release_interface(&btusb_driver, data->intf);
1097         else if (data->isoc)
1098                 usb_driver_release_interface(&btusb_driver, data->isoc);
1099
1100         hci_free_dev(hdev);
1101         kfree(data);
1102 }
1103
1104 #ifdef CONFIG_PM
1105 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1106 {
1107         struct btusb_data *data = usb_get_intfdata(intf);
1108
1109         BT_DBG("intf %p", intf);
1110
1111         if (data->suspend_count++)
1112                 return 0;
1113
1114         spin_lock_irq(&data->txlock);
1115         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1116                 set_bit(BTUSB_SUSPENDING, &data->flags);
1117                 spin_unlock_irq(&data->txlock);
1118         } else {
1119                 spin_unlock_irq(&data->txlock);
1120                 data->suspend_count--;
1121                 return -EBUSY;
1122         }
1123
1124         cancel_work_sync(&data->work);
1125
1126         btusb_stop_traffic(data);
1127         usb_kill_anchored_urbs(&data->tx_anchor);
1128
1129         return 0;
1130 }
1131
1132 static void play_deferred(struct btusb_data *data)
1133 {
1134         struct urb *urb;
1135         int err;
1136
1137         while ((urb = usb_get_from_anchor(&data->deferred))) {
1138                 err = usb_submit_urb(urb, GFP_ATOMIC);
1139                 if (err < 0)
1140                         break;
1141
1142                 data->tx_in_flight++;
1143         }
1144         usb_scuttle_anchored_urbs(&data->deferred);
1145 }
1146
1147 static int btusb_resume(struct usb_interface *intf)
1148 {
1149         struct btusb_data *data = usb_get_intfdata(intf);
1150         struct hci_dev *hdev = data->hdev;
1151         int err = 0;
1152
1153         BT_DBG("intf %p", intf);
1154
1155         if (--data->suspend_count)
1156                 return 0;
1157
1158         if (!test_bit(HCI_RUNNING, &hdev->flags))
1159                 goto done;
1160
1161         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1162                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1163                 if (err < 0) {
1164                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1165                         goto failed;
1166                 }
1167         }
1168
1169         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1170                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1171                 if (err < 0) {
1172                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1173                         goto failed;
1174                 }
1175
1176                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1177         }
1178
1179         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1180                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1181                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1182                 else
1183                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1184         }
1185
1186         spin_lock_irq(&data->txlock);
1187         play_deferred(data);
1188         clear_bit(BTUSB_SUSPENDING, &data->flags);
1189         spin_unlock_irq(&data->txlock);
1190         schedule_work(&data->work);
1191
1192         return 0;
1193
1194 failed:
1195         usb_scuttle_anchored_urbs(&data->deferred);
1196 done:
1197         spin_lock_irq(&data->txlock);
1198         clear_bit(BTUSB_SUSPENDING, &data->flags);
1199         spin_unlock_irq(&data->txlock);
1200
1201         return err;
1202 }
1203 #endif
1204
1205 static struct usb_driver btusb_driver = {
1206         .name           = "btusb",
1207         .probe          = btusb_probe,
1208         .disconnect     = btusb_disconnect,
1209 #ifdef CONFIG_PM
1210         .suspend        = btusb_suspend,
1211         .resume         = btusb_resume,
1212 #endif
1213         .id_table       = btusb_table,
1214         .supports_autosuspend = 1,
1215 };
1216
1217 module_usb_driver(btusb_driver);
1218
1219 module_param(ignore_dga, bool, 0644);
1220 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1221
1222 module_param(ignore_csr, bool, 0644);
1223 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1224
1225 module_param(ignore_sniffer, bool, 0644);
1226 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1227
1228 module_param(disable_scofix, bool, 0644);
1229 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1230
1231 module_param(force_scofix, bool, 0644);
1232 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1233
1234 module_param(reset, bool, 0644);
1235 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1236
1237 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1238 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1239 MODULE_VERSION(VERSION);
1240 MODULE_LICENSE("GPL");