drivers/bluetooth/btusb.c

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