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