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 #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         /* Apple MacBookPro 7,1 */
  64         { USB_DEVICE(0x05ac, 0x8213) },
  65
  66         /* Apple iMac11,1 */
  67         { USB_DEVICE(0x05ac, 0x8215) },
  68
  69         /* Apple MacBookPro6,2 */
  70         { USB_DEVICE(0x05ac, 0x8218) },
  71
  72         /* Apple MacBookAir3,1, MacBookAir3,2 */
  73         { USB_DEVICE(0x05ac, 0x821b) },
  74
  75         /* Apple MacBookAir4,1 */
  76         { USB_DEVICE(0x05ac, 0x821f) },
  77
  78         /* Apple MacBookPro8,2 */
  79         { USB_DEVICE(0x05ac, 0x821a) },
  80
  81         /* Apple MacMini5,1 */
  82         { USB_DEVICE(0x05ac, 0x8281) },
  83
  84         /* AVM BlueFRITZ! USB v2.0 */
  85         { USB_DEVICE(0x057c, 0x3800) },
  86
  87         /* Bluetooth Ultraport Module from IBM */
  88         { USB_DEVICE(0x04bf, 0x030a) },
  89
  90         /* ALPS Modules with non-standard id */
  91         { USB_DEVICE(0x044e, 0x3001) },
  92         { USB_DEVICE(0x044e, 0x3002) },
  93
  94         /* Ericsson with non-standard id */
  95         { USB_DEVICE(0x0bdb, 0x1002) },
  96
  97         /* Canyon CN-BTU1 with HID interfaces */
  98         { USB_DEVICE(0x0c10, 0x0000) },
  99
 100         { }     /* Terminating entry */
 101 };
 102
 103 MODULE_DEVICE_TABLE(usb, btusb_table);
 104
 105 static struct usb_device_id blacklist_table[] = {
 106         /* CSR BlueCore devices */
 107         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 108
 109         /* Broadcom BCM2033 without firmware */
 110         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 111
 112         /* Atheros 3011 with sflash firmware */
 113         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 114         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 115         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 116
 117         /* Atheros AR9285 Malbec with sflash firmware */
 118         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 119
 120         /* Atheros 3012 with sflash firmware */
 121         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 122
 123         /* Atheros AR5BBU12 with sflash firmware */
 124         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 125
 126         /* Broadcom BCM2035 */
 127         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 128         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 129         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 130
 131         /* Broadcom BCM2045 */
 132         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 133         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 134
 135         /* IBM/Lenovo ThinkPad with Broadcom chip */
 136         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 137         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 138
 139         /* HP laptop with Broadcom chip */
 140         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 141
 142         /* Dell laptop with Broadcom chip */
 143         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 144
 145         /* Dell Wireless 370 and 410 devices */
 146         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 147         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 148
 149         /* Belkin F8T012 and F8T013 devices */
 150         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 151         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* Asus WL-BTD202 device */
 154         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* Kensington Bluetooth USB adapter */
 157         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* RTX Telecom based adapters with buggy SCO support */
 160         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 161         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 162
 163         /* CONWISE Technology based adapters with buggy SCO support */
 164         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 165
 166         /* Digianswer devices */
 167         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 168         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 169
 170         /* CSR BlueCore Bluetooth Sniffer */
 171         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 172
 173         /* Frontline ComProbe Bluetooth Sniffer */
 174         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 175
 176         { }     /* Terminating entry */
 177 };
 178
 179 #define BTUSB_MAX_ISOC_FRAMES   10
 180
 181 #define BTUSB_INTR_RUNNING      0
 182 #define BTUSB_BULK_RUNNING      1
 183 #define BTUSB_ISOC_RUNNING      2
 184 #define BTUSB_SUSPENDING        3
 185 #define BTUSB_DID_ISO_RESUME    4
 186
 187 struct btusb_data {
 188         struct hci_dev       *hdev;
 189         struct usb_device    *udev;
 190         struct usb_interface *intf;
 191         struct usb_interface *isoc;
 192
 193         spinlock_t lock;
 194
 195         unsigned long flags;
 196
 197         struct work_struct work;
 198         struct work_struct waker;
 199
 200         struct usb_anchor tx_anchor;
 201         struct usb_anchor intr_anchor;
 202         struct usb_anchor bulk_anchor;
 203         struct usb_anchor isoc_anchor;
 204         struct usb_anchor deferred;
 205         int tx_in_flight;
 206         spinlock_t txlock;
 207
 208         struct usb_endpoint_descriptor *intr_ep;
 209         struct usb_endpoint_descriptor *bulk_tx_ep;
 210         struct usb_endpoint_descriptor *bulk_rx_ep;
 211         struct usb_endpoint_descriptor *isoc_tx_ep;
 212         struct usb_endpoint_descriptor *isoc_rx_ep;
 213
 214         __u8 cmdreq_type;
 215
 216         unsigned int sco_num;
 217         int isoc_altsetting;
 218         int suspend_count;
 219 };
 220
 221 static int inc_tx(struct btusb_data *data)
 222 {
 223         unsigned long flags;
 224         int rv;
 225
 226         spin_lock_irqsave(&data->txlock, flags);
 227         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 228         if (!rv)
 229                 data->tx_in_flight++;
 230         spin_unlock_irqrestore(&data->txlock, flags);
 231
 232         return rv;
 233 }
 234
 235 static void btusb_intr_complete(struct urb *urb)
 236 {
 237         struct hci_dev *hdev = urb->context;
 238         struct btusb_data *data = hdev->driver_data;
 239         int err;
 240
 241         BT_DBG("%s urb %p status %d count %d", hdev->name,
 242                                         urb, urb->status, urb->actual_length);
 243
 244         if (!test_bit(HCI_RUNNING, &hdev->flags))
 245                 return;
 246
 247         if (urb->status == 0) {
 248                 hdev->stat.byte_rx += urb->actual_length;
 249
 250                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 251                                                 urb->transfer_buffer,
 252                                                 urb->actual_length) < 0) {
 253                         BT_ERR("%s corrupted event packet", hdev->name);
 254                         hdev->stat.err_rx++;
 255                 }
 256         }
 257
 258         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 259                 return;
 260
 261         usb_mark_last_busy(data->udev);
 262         usb_anchor_urb(urb, &data->intr_anchor);
 263
 264         err = usb_submit_urb(urb, GFP_ATOMIC);
 265         if (err < 0) {
 266                 /* -EPERM: urb is being killed;
 267                  * -ENODEV: device got disconnected */
 268                 if (err != -EPERM && err != -ENODEV)
 269                         BT_ERR("%s urb %p failed to resubmit (%d)",
 270                                                 hdev->name, urb, -err);
 271                 usb_unanchor_urb(urb);
 272         }
 273 }
 274
 275 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 276 {
 277         struct btusb_data *data = hdev->driver_data;
 278         struct urb *urb;
 279         unsigned char *buf;
 280         unsigned int pipe;
 281         int err, size;
 282
 283         BT_DBG("%s", hdev->name);
 284
 285         if (!data->intr_ep)
 286                 return -ENODEV;
 287
 288         urb = usb_alloc_urb(0, mem_flags);
 289         if (!urb)
 290                 return -ENOMEM;
 291
 292         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 293
 294         buf = kmalloc(size, mem_flags);
 295         if (!buf) {
 296                 usb_free_urb(urb);
 297                 return -ENOMEM;
 298         }
 299
 300         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 301
 302         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 303                                                 btusb_intr_complete, hdev,
 304                                                 data->intr_ep->bInterval);
 305
 306         urb->transfer_flags |= URB_FREE_BUFFER;
 307
 308         usb_anchor_urb(urb, &data->intr_anchor);
 309
 310         err = usb_submit_urb(urb, mem_flags);
 311         if (err < 0) {
 312                 BT_ERR("%s urb %p submission failed (%d)",
 313                                                 hdev->name, urb, -err);
 314                 usb_unanchor_urb(urb);
 315         }
 316
 317         usb_free_urb(urb);
 318
 319         return err;
 320 }
 321
 322 static void btusb_bulk_complete(struct urb *urb)
 323 {
 324         struct hci_dev *hdev = urb->context;
 325         struct btusb_data *data = hdev->driver_data;
 326         int err;
 327
 328         BT_DBG("%s urb %p status %d count %d", hdev->name,
 329                                         urb, urb->status, urb->actual_length);
 330
 331         if (!test_bit(HCI_RUNNING, &hdev->flags))
 332                 return;
 333
 334         if (urb->status == 0) {
 335                 hdev->stat.byte_rx += urb->actual_length;
 336
 337                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 338                                                 urb->transfer_buffer,
 339                                                 urb->actual_length) < 0) {
 340                         BT_ERR("%s corrupted ACL packet", hdev->name);
 341                         hdev->stat.err_rx++;
 342                 }
 343         }
 344
 345         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 346                 return;
 347
 348         usb_anchor_urb(urb, &data->bulk_anchor);
 349         usb_mark_last_busy(data->udev);
 350
 351         err = usb_submit_urb(urb, GFP_ATOMIC);
 352         if (err < 0) {
 353                 /* -EPERM: urb is being killed;
 354                  * -ENODEV: device got disconnected */
 355                 if (err != -EPERM && err != -ENODEV)
 356                         BT_ERR("%s urb %p failed to resubmit (%d)",
 357                                                 hdev->name, urb, -err);
 358                 usb_unanchor_urb(urb);
 359         }
 360 }
 361
 362 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 363 {
 364         struct btusb_data *data = hdev->driver_data;
 365         struct urb *urb;
 366         unsigned char *buf;
 367         unsigned int pipe;
 368         int err, size = HCI_MAX_FRAME_SIZE;
 369
 370         BT_DBG("%s", hdev->name);
 371
 372         if (!data->bulk_rx_ep)
 373                 return -ENODEV;
 374
 375         urb = usb_alloc_urb(0, mem_flags);
 376         if (!urb)
 377                 return -ENOMEM;
 378
 379         buf = kmalloc(size, mem_flags);
 380         if (!buf) {
 381                 usb_free_urb(urb);
 382                 return -ENOMEM;
 383         }
 384
 385         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 386
 387         usb_fill_bulk_urb(urb, data->udev, pipe,
 388                                         buf, size, btusb_bulk_complete, hdev);
 389
 390         urb->transfer_flags |= URB_FREE_BUFFER;
 391
 392         usb_mark_last_busy(data->udev);
 393         usb_anchor_urb(urb, &data->bulk_anchor);
 394
 395         err = usb_submit_urb(urb, mem_flags);
 396         if (err < 0) {
 397                 BT_ERR("%s urb %p submission failed (%d)",
 398                                                 hdev->name, urb, -err);
 399                 usb_unanchor_urb(urb);
 400         }
 401
 402         usb_free_urb(urb);
 403
 404         return err;
 405 }
 406
 407 static void btusb_isoc_complete(struct urb *urb)
 408 {
 409         struct hci_dev *hdev = urb->context;
 410         struct btusb_data *data = hdev->driver_data;
 411         int i, err;
 412
 413         BT_DBG("%s urb %p status %d count %d", hdev->name,
 414                                         urb, urb->status, urb->actual_length);
 415
 416         if (!test_bit(HCI_RUNNING, &hdev->flags))
 417                 return;
 418
 419         if (urb->status == 0) {
 420                 for (i = 0; i < urb->number_of_packets; i++) {
 421                         unsigned int offset = urb->iso_frame_desc[i].offset;
 422                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 423
 424                         if (urb->iso_frame_desc[i].status)
 425                                 continue;
 426
 427                         hdev->stat.byte_rx += length;
 428
 429                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 430                                                 urb->transfer_buffer + offset,
 431                                                                 length) < 0) {
 432                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 433                                 hdev->stat.err_rx++;
 434                         }
 435                 }
 436         }
 437
 438         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 439                 return;
 440
 441         usb_anchor_urb(urb, &data->isoc_anchor);
 442
 443         err = usb_submit_urb(urb, GFP_ATOMIC);
 444         if (err < 0) {
 445                 /* -EPERM: urb is being killed;
 446                  * -ENODEV: device got disconnected */
 447                 if (err != -EPERM && err != -ENODEV)
 448                         BT_ERR("%s urb %p failed to resubmit (%d)",
 449                                                 hdev->name, urb, -err);
 450                 usb_unanchor_urb(urb);
 451         }
 452 }
 453
 454 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 455 {
 456         int i, offset = 0;
 457
 458         BT_DBG("len %d mtu %d", len, mtu);
 459
 460         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 461                                         i++, offset += mtu, len -= mtu) {
 462                 urb->iso_frame_desc[i].offset = offset;
 463                 urb->iso_frame_desc[i].length = mtu;
 464         }
 465
 466         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 467                 urb->iso_frame_desc[i].offset = offset;
 468                 urb->iso_frame_desc[i].length = len;
 469                 i++;
 470         }
 471
 472         urb->number_of_packets = i;
 473 }
 474
 475 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 476 {
 477         struct btusb_data *data = hdev->driver_data;
 478         struct urb *urb;
 479         unsigned char *buf;
 480         unsigned int pipe;
 481         int err, size;
 482
 483         BT_DBG("%s", hdev->name);
 484
 485         if (!data->isoc_rx_ep)
 486                 return -ENODEV;
 487
 488         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 489         if (!urb)
 490                 return -ENOMEM;
 491
 492         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 493                                                 BTUSB_MAX_ISOC_FRAMES;
 494
 495         buf = kmalloc(size, mem_flags);
 496         if (!buf) {
 497                 usb_free_urb(urb);
 498                 return -ENOMEM;
 499         }
 500
 501         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 502
 503         urb->dev      = data->udev;
 504         urb->pipe     = pipe;
 505         urb->context  = hdev;
 506         urb->complete = btusb_isoc_complete;
 507         urb->interval = data->isoc_rx_ep->bInterval;
 508
 509         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 510         urb->transfer_buffer = buf;
 511         urb->transfer_buffer_length = size;
 512
 513         __fill_isoc_descriptor(urb, size,
 514                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 515
 516         usb_anchor_urb(urb, &data->isoc_anchor);
 517
 518         err = usb_submit_urb(urb, mem_flags);
 519         if (err < 0) {
 520                 BT_ERR("%s urb %p submission failed (%d)",
 521                                                 hdev->name, urb, -err);
 522                 usb_unanchor_urb(urb);
 523         }
 524
 525         usb_free_urb(urb);
 526
 527         return err;
 528 }
 529
 530 static void btusb_tx_complete(struct urb *urb)
 531 {
 532         struct sk_buff *skb = urb->context;
 533         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 534         struct btusb_data *data = hdev->driver_data;
 535
 536         BT_DBG("%s urb %p status %d count %d", hdev->name,
 537                                         urb, urb->status, urb->actual_length);
 538
 539         if (!test_bit(HCI_RUNNING, &hdev->flags))
 540                 goto done;
 541
 542         if (!urb->status)
 543                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 544         else
 545                 hdev->stat.err_tx++;
 546
 547 done:
 548         spin_lock(&data->txlock);
 549         data->tx_in_flight--;
 550         spin_unlock(&data->txlock);
 551
 552         kfree(urb->setup_packet);
 553
 554         kfree_skb(skb);
 555 }
 556
 557 static void btusb_isoc_tx_complete(struct urb *urb)
 558 {
 559         struct sk_buff *skb = urb->context;
 560         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 561
 562         BT_DBG("%s urb %p status %d count %d", hdev->name,
 563                                         urb, urb->status, urb->actual_length);
 564
 565         if (!test_bit(HCI_RUNNING, &hdev->flags))
 566                 goto done;
 567
 568         if (!urb->status)
 569                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 570         else
 571                 hdev->stat.err_tx++;
 572
 573 done:
 574         kfree(urb->setup_packet);
 575
 576         kfree_skb(skb);
 577 }
 578
 579 static int btusb_open(struct hci_dev *hdev)
 580 {
 581         struct btusb_data *data = hdev->driver_data;
 582         int err;
 583
 584         BT_DBG("%s", hdev->name);
 585
 586         err = usb_autopm_get_interface(data->intf);
 587         if (err < 0)
 588                 return err;
 589
 590         data->intf->needs_remote_wakeup = 1;
 591
 592         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 593                 goto done;
 594
 595         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 596                 goto done;
 597
 598         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 599         if (err < 0)
 600                 goto failed;
 601
 602         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 603         if (err < 0) {
 604                 usb_kill_anchored_urbs(&data->intr_anchor);
 605                 goto failed;
 606         }
 607
 608         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 609         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 610
 611 done:
 612         usb_autopm_put_interface(data->intf);
 613         return 0;
 614
 615 failed:
 616         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 617         clear_bit(HCI_RUNNING, &hdev->flags);
 618         usb_autopm_put_interface(data->intf);
 619         return err;
 620 }
 621
 622 static void btusb_stop_traffic(struct btusb_data *data)
 623 {
 624         usb_kill_anchored_urbs(&data->intr_anchor);
 625         usb_kill_anchored_urbs(&data->bulk_anchor);
 626         usb_kill_anchored_urbs(&data->isoc_anchor);
 627 }
 628
 629 static int btusb_close(struct hci_dev *hdev)
 630 {
 631         struct btusb_data *data = hdev->driver_data;
 632         int err;
 633
 634         BT_DBG("%s", hdev->name);
 635
 636         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 637                 return 0;
 638
 639         cancel_work_sync(&data->work);
 640         cancel_work_sync(&data->waker);
 641
 642         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 643         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 644         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 645
 646         btusb_stop_traffic(data);
 647         err = usb_autopm_get_interface(data->intf);
 648         if (err < 0)
 649                 goto failed;
 650
 651         data->intf->needs_remote_wakeup = 0;
 652         usb_autopm_put_interface(data->intf);
 653
 654 failed:
 655         usb_scuttle_anchored_urbs(&data->deferred);
 656         return 0;
 657 }
 658
 659 static int btusb_flush(struct hci_dev *hdev)
 660 {
 661         struct btusb_data *data = hdev->driver_data;
 662
 663         BT_DBG("%s", hdev->name);
 664
 665         usb_kill_anchored_urbs(&data->tx_anchor);
 666
 667         return 0;
 668 }
 669
 670 static int btusb_send_frame(struct sk_buff *skb)
 671 {
 672         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 673         struct btusb_data *data = hdev->driver_data;
 674         struct usb_ctrlrequest *dr;
 675         struct urb *urb;
 676         unsigned int pipe;
 677         int err;
 678
 679         BT_DBG("%s", hdev->name);
 680
 681         if (!test_bit(HCI_RUNNING, &hdev->flags))
 682                 return -EBUSY;
 683
 684         switch (bt_cb(skb)->pkt_type) {
 685         case HCI_COMMAND_PKT:
 686                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 687                 if (!urb)
 688                         return -ENOMEM;
 689
 690                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 691                 if (!dr) {
 692                         usb_free_urb(urb);
 693                         return -ENOMEM;
 694                 }
 695
 696                 dr->bRequestType = data->cmdreq_type;
 697                 dr->bRequest     = 0;
 698                 dr->wIndex       = 0;
 699                 dr->wValue       = 0;
 700                 dr->wLength      = __cpu_to_le16(skb->len);
 701
 702                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 703
 704                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 705                                 skb->data, skb->len, btusb_tx_complete, skb);
 706
 707                 hdev->stat.cmd_tx++;
 708                 break;
 709
 710         case HCI_ACLDATA_PKT:
 711                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
 712                                                 hdev->conn_hash.le_num < 1))
 713                         return -ENODEV;
 714
 715                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 716                 if (!urb)
 717                         return -ENOMEM;
 718
 719                 pipe = usb_sndbulkpipe(data->udev,
 720                                         data->bulk_tx_ep->bEndpointAddress);
 721
 722                 usb_fill_bulk_urb(urb, data->udev, pipe,
 723                                 skb->data, skb->len, btusb_tx_complete, skb);
 724
 725                 hdev->stat.acl_tx++;
 726                 break;
 727
 728         case HCI_SCODATA_PKT:
 729                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 730                         return -ENODEV;
 731
 732                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 733                 if (!urb)
 734                         return -ENOMEM;
 735
 736                 pipe = usb_sndisocpipe(data->udev,
 737                                         data->isoc_tx_ep->bEndpointAddress);
 738
 739                 usb_fill_int_urb(urb, data->udev, pipe,
 740                                 skb->data, skb->len, btusb_isoc_tx_complete,
 741                                 skb, data->isoc_tx_ep->bInterval);
 742
 743                 urb->transfer_flags  = URB_ISO_ASAP;
 744
 745                 __fill_isoc_descriptor(urb, skb->len,
 746                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 747
 748                 hdev->stat.sco_tx++;
 749                 goto skip_waking;
 750
 751         default:
 752                 return -EILSEQ;
 753         }
 754
 755         err = inc_tx(data);
 756         if (err) {
 757                 usb_anchor_urb(urb, &data->deferred);
 758                 schedule_work(&data->waker);
 759                 err = 0;
 760                 goto done;
 761         }
 762
 763 skip_waking:
 764         usb_anchor_urb(urb, &data->tx_anchor);
 765
 766         err = usb_submit_urb(urb, GFP_ATOMIC);
 767         if (err < 0) {
 768                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 769                 kfree(urb->setup_packet);
 770                 usb_unanchor_urb(urb);
 771         } else {
 772                 usb_mark_last_busy(data->udev);
 773         }
 774
 775         usb_free_urb(urb);
 776
 777 done:
 778         return err;
 779 }
 780
 781 static void btusb_destruct(struct hci_dev *hdev)
 782 {
 783         struct btusb_data *data = hdev->driver_data;
 784
 785         BT_DBG("%s", hdev->name);
 786
 787         kfree(data);
 788 }
 789
 790 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 791 {
 792         struct btusb_data *data = hdev->driver_data;
 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 = hdev->driver_data;
 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         hdev->driver_data = 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->destruct = btusb_destruct;
1003         hdev->notify   = btusb_notify;
1004
1005         hdev->owner = THIS_MODULE;
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
1089         __hci_dev_hold(hdev);
1090
1091         usb_set_intfdata(data->intf, NULL);
1092
1093         if (data->isoc)
1094                 usb_set_intfdata(data->isoc, NULL);
1095
1096         hci_unregister_dev(hdev);
1097
1098         if (intf == data->isoc)
1099                 usb_driver_release_interface(&btusb_driver, data->intf);
1100         else if (data->isoc)
1101                 usb_driver_release_interface(&btusb_driver, data->isoc);
1102
1103         __hci_dev_put(hdev);
1104
1105         hci_free_dev(hdev);
1106 }
1107
1108 #ifdef CONFIG_PM
1109 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1110 {
1111         struct btusb_data *data = usb_get_intfdata(intf);
1112
1113         BT_DBG("intf %p", intf);
1114
1115         if (data->suspend_count++)
1116                 return 0;
1117
1118         spin_lock_irq(&data->txlock);
1119         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1120                 set_bit(BTUSB_SUSPENDING, &data->flags);
1121                 spin_unlock_irq(&data->txlock);
1122         } else {
1123                 spin_unlock_irq(&data->txlock);
1124                 data->suspend_count--;
1125                 return -EBUSY;
1126         }
1127
1128         cancel_work_sync(&data->work);
1129
1130         btusb_stop_traffic(data);
1131         usb_kill_anchored_urbs(&data->tx_anchor);
1132
1133         return 0;
1134 }
1135
1136 static void play_deferred(struct btusb_data *data)
1137 {
1138         struct urb *urb;
1139         int err;
1140
1141         while ((urb = usb_get_from_anchor(&data->deferred))) {
1142                 err = usb_submit_urb(urb, GFP_ATOMIC);
1143                 if (err < 0)
1144                         break;
1145
1146                 data->tx_in_flight++;
1147         }
1148         usb_scuttle_anchored_urbs(&data->deferred);
1149 }
1150
1151 static int btusb_resume(struct usb_interface *intf)
1152 {
1153         struct btusb_data *data = usb_get_intfdata(intf);
1154         struct hci_dev *hdev = data->hdev;
1155         int err = 0;
1156
1157         BT_DBG("intf %p", intf);
1158
1159         if (--data->suspend_count)
1160                 return 0;
1161
1162         if (!test_bit(HCI_RUNNING, &hdev->flags))
1163                 goto done;
1164
1165         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1166                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1167                 if (err < 0) {
1168                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1169                         goto failed;
1170                 }
1171         }
1172
1173         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1174                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1175                 if (err < 0) {
1176                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1177                         goto failed;
1178                 }
1179
1180                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1181         }
1182
1183         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1184                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1185                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1186                 else
1187                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1188         }
1189
1190         spin_lock_irq(&data->txlock);
1191         play_deferred(data);
1192         clear_bit(BTUSB_SUSPENDING, &data->flags);
1193         spin_unlock_irq(&data->txlock);
1194         schedule_work(&data->work);
1195
1196         return 0;
1197
1198 failed:
1199         usb_scuttle_anchored_urbs(&data->deferred);
1200 done:
1201         spin_lock_irq(&data->txlock);
1202         clear_bit(BTUSB_SUSPENDING, &data->flags);
1203         spin_unlock_irq(&data->txlock);
1204
1205         return err;
1206 }
1207 #endif
1208
1209 static struct usb_driver btusb_driver = {
1210         .name           = "btusb",
1211         .probe          = btusb_probe,
1212         .disconnect     = btusb_disconnect,
1213 #ifdef CONFIG_PM
1214         .suspend        = btusb_suspend,
1215         .resume         = btusb_resume,
1216 #endif
1217         .id_table       = btusb_table,
1218         .supports_autosuspend = 1,
1219 };
1220
1221 static int __init btusb_init(void)
1222 {
1223         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1224
1225         return usb_register(&btusb_driver);
1226 }
1227
1228 static void __exit btusb_exit(void)
1229 {
1230         usb_deregister(&btusb_driver);
1231 }
1232
1233 module_init(btusb_init);
1234 module_exit(btusb_exit);
1235
1236 module_param(ignore_dga, bool, 0644);
1237 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1238
1239 module_param(ignore_csr, bool, 0644);
1240 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1241
1242 module_param(ignore_sniffer, bool, 0644);
1243 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1244
1245 module_param(disable_scofix, bool, 0644);
1246 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1247
1248 module_param(force_scofix, bool, 0644);
1249 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1250
1251 module_param(reset, bool, 0644);
1252 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1253
1254 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1255 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1256 MODULE_VERSION(VERSION);
1257 MODULE_LICENSE("GPL");