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 MacBookPro8,2 */
  76         { USB_DEVICE(0x05ac, 0x821a) },
  77
  78         /* AVM BlueFRITZ! USB v2.0 */
  79         { USB_DEVICE(0x057c, 0x3800) },
  80
  81         /* Bluetooth Ultraport Module from IBM */
  82         { USB_DEVICE(0x04bf, 0x030a) },
  83
  84         /* ALPS Modules with non-standard id */
  85         { USB_DEVICE(0x044e, 0x3001) },
  86         { USB_DEVICE(0x044e, 0x3002) },
  87
  88         /* Ericsson with non-standard id */
  89         { USB_DEVICE(0x0bdb, 0x1002) },
  90
  91         /* Canyon CN-BTU1 with HID interfaces */
  92         { USB_DEVICE(0x0c10, 0x0000) },
  93
  94         { }     /* Terminating entry */
  95 };
  96
  97 MODULE_DEVICE_TABLE(usb, btusb_table);
  98
  99 static struct usb_device_id blacklist_table[] = {
 100         /* CSR BlueCore devices */
 101         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 102
 103         /* Broadcom BCM2033 without firmware */
 104         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 105
 106         /* Atheros 3011 with sflash firmware */
 107         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 108         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 109         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 110
 111         /* Atheros AR9285 Malbec with sflash firmware */
 112         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 113
 114         /* Atheros 3012 with sflash firmware */
 115         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 116
 117         /* Atheros AR5BBU12 with sflash firmware */
 118         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 119
 120         /* Broadcom BCM2035 */
 121         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 122         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 123         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 124
 125         /* Broadcom BCM2045 */
 126         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 127         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 128
 129         /* IBM/Lenovo ThinkPad with Broadcom chip */
 130         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 131         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 132
 133         /* HP laptop with Broadcom chip */
 134         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 135
 136         /* Dell laptop with Broadcom chip */
 137         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 138
 139         /* Dell Wireless 370 and 410 devices */
 140         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 141         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 142
 143         /* Belkin F8T012 and F8T013 devices */
 144         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 145         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 146
 147         /* Asus WL-BTD202 device */
 148         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 149
 150         /* Kensington Bluetooth USB adapter */
 151         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* RTX Telecom based adapters with buggy SCO support */
 154         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 155         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 156
 157         /* CONWISE Technology based adapters with buggy SCO support */
 158         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 159
 160         /* Digianswer devices */
 161         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 162         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 163
 164         /* CSR BlueCore Bluetooth Sniffer */
 165         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 166
 167         /* Frontline ComProbe Bluetooth Sniffer */
 168         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 169
 170         { }     /* Terminating entry */
 171 };
 172
 173 #define BTUSB_MAX_ISOC_FRAMES   10
 174
 175 #define BTUSB_INTR_RUNNING      0
 176 #define BTUSB_BULK_RUNNING      1
 177 #define BTUSB_ISOC_RUNNING      2
 178 #define BTUSB_SUSPENDING        3
 179 #define BTUSB_DID_ISO_RESUME    4
 180
 181 struct btusb_data {
 182         struct hci_dev       *hdev;
 183         struct usb_device    *udev;
 184         struct usb_interface *intf;
 185         struct usb_interface *isoc;
 186
 187         spinlock_t lock;
 188
 189         unsigned long flags;
 190
 191         struct work_struct work;
 192         struct work_struct waker;
 193
 194         struct usb_anchor tx_anchor;
 195         struct usb_anchor intr_anchor;
 196         struct usb_anchor bulk_anchor;
 197         struct usb_anchor isoc_anchor;
 198         struct usb_anchor deferred;
 199         int tx_in_flight;
 200         spinlock_t txlock;
 201
 202         struct usb_endpoint_descriptor *intr_ep;
 203         struct usb_endpoint_descriptor *bulk_tx_ep;
 204         struct usb_endpoint_descriptor *bulk_rx_ep;
 205         struct usb_endpoint_descriptor *isoc_tx_ep;
 206         struct usb_endpoint_descriptor *isoc_rx_ep;
 207
 208         __u8 cmdreq_type;
 209
 210         unsigned int sco_num;
 211         int isoc_altsetting;
 212         int suspend_count;
 213 };
 214
 215 static int inc_tx(struct btusb_data *data)
 216 {
 217         unsigned long flags;
 218         int rv;
 219
 220         spin_lock_irqsave(&data->txlock, flags);
 221         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 222         if (!rv)
 223                 data->tx_in_flight++;
 224         spin_unlock_irqrestore(&data->txlock, flags);
 225
 226         return rv;
 227 }
 228
 229 static void btusb_intr_complete(struct urb *urb)
 230 {
 231         struct hci_dev *hdev = urb->context;
 232         struct btusb_data *data = hdev->driver_data;
 233         int err;
 234
 235         BT_DBG("%s urb %p status %d count %d", hdev->name,
 236                                         urb, urb->status, urb->actual_length);
 237
 238         if (!test_bit(HCI_RUNNING, &hdev->flags))
 239                 return;
 240
 241         if (urb->status == 0) {
 242                 hdev->stat.byte_rx += urb->actual_length;
 243
 244                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 245                                                 urb->transfer_buffer,
 246                                                 urb->actual_length) < 0) {
 247                         BT_ERR("%s corrupted event packet", hdev->name);
 248                         hdev->stat.err_rx++;
 249                 }
 250         }
 251
 252         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 253                 return;
 254
 255         usb_mark_last_busy(data->udev);
 256         usb_anchor_urb(urb, &data->intr_anchor);
 257
 258         err = usb_submit_urb(urb, GFP_ATOMIC);
 259         if (err < 0) {
 260                 /* -EPERM: urb is being killed;
 261                  * -ENODEV: device got disconnected */
 262                 if (err != -EPERM && err != -ENODEV)
 263                         BT_ERR("%s urb %p failed to resubmit (%d)",
 264                                                 hdev->name, urb, -err);
 265                 usb_unanchor_urb(urb);
 266         }
 267 }
 268
 269 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 270 {
 271         struct btusb_data *data = hdev->driver_data;
 272         struct urb *urb;
 273         unsigned char *buf;
 274         unsigned int pipe;
 275         int err, size;
 276
 277         BT_DBG("%s", hdev->name);
 278
 279         if (!data->intr_ep)
 280                 return -ENODEV;
 281
 282         urb = usb_alloc_urb(0, mem_flags);
 283         if (!urb)
 284                 return -ENOMEM;
 285
 286         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 287
 288         buf = kmalloc(size, mem_flags);
 289         if (!buf) {
 290                 usb_free_urb(urb);
 291                 return -ENOMEM;
 292         }
 293
 294         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 295
 296         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 297                                                 btusb_intr_complete, hdev,
 298                                                 data->intr_ep->bInterval);
 299
 300         urb->transfer_flags |= URB_FREE_BUFFER;
 301
 302         usb_anchor_urb(urb, &data->intr_anchor);
 303
 304         err = usb_submit_urb(urb, mem_flags);
 305         if (err < 0) {
 306                 BT_ERR("%s urb %p submission failed (%d)",
 307                                                 hdev->name, urb, -err);
 308                 usb_unanchor_urb(urb);
 309         }
 310
 311         usb_free_urb(urb);
 312
 313         return err;
 314 }
 315
 316 static void btusb_bulk_complete(struct urb *urb)
 317 {
 318         struct hci_dev *hdev = urb->context;
 319         struct btusb_data *data = hdev->driver_data;
 320         int err;
 321
 322         BT_DBG("%s urb %p status %d count %d", hdev->name,
 323                                         urb, urb->status, urb->actual_length);
 324
 325         if (!test_bit(HCI_RUNNING, &hdev->flags))
 326                 return;
 327
 328         if (urb->status == 0) {
 329                 hdev->stat.byte_rx += urb->actual_length;
 330
 331                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 332                                                 urb->transfer_buffer,
 333                                                 urb->actual_length) < 0) {
 334                         BT_ERR("%s corrupted ACL packet", hdev->name);
 335                         hdev->stat.err_rx++;
 336                 }
 337         }
 338
 339         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 340                 return;
 341
 342         usb_anchor_urb(urb, &data->bulk_anchor);
 343         usb_mark_last_busy(data->udev);
 344
 345         err = usb_submit_urb(urb, GFP_ATOMIC);
 346         if (err < 0) {
 347                 /* -EPERM: urb is being killed;
 348                  * -ENODEV: device got disconnected */
 349                 if (err != -EPERM && err != -ENODEV)
 350                         BT_ERR("%s urb %p failed to resubmit (%d)",
 351                                                 hdev->name, urb, -err);
 352                 usb_unanchor_urb(urb);
 353         }
 354 }
 355
 356 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 357 {
 358         struct btusb_data *data = hdev->driver_data;
 359         struct urb *urb;
 360         unsigned char *buf;
 361         unsigned int pipe;
 362         int err, size = HCI_MAX_FRAME_SIZE;
 363
 364         BT_DBG("%s", hdev->name);
 365
 366         if (!data->bulk_rx_ep)
 367                 return -ENODEV;
 368
 369         urb = usb_alloc_urb(0, mem_flags);
 370         if (!urb)
 371                 return -ENOMEM;
 372
 373         buf = kmalloc(size, mem_flags);
 374         if (!buf) {
 375                 usb_free_urb(urb);
 376                 return -ENOMEM;
 377         }
 378
 379         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 380
 381         usb_fill_bulk_urb(urb, data->udev, pipe,
 382                                         buf, size, btusb_bulk_complete, hdev);
 383
 384         urb->transfer_flags |= URB_FREE_BUFFER;
 385
 386         usb_mark_last_busy(data->udev);
 387         usb_anchor_urb(urb, &data->bulk_anchor);
 388
 389         err = usb_submit_urb(urb, mem_flags);
 390         if (err < 0) {
 391                 BT_ERR("%s urb %p submission failed (%d)",
 392                                                 hdev->name, urb, -err);
 393                 usb_unanchor_urb(urb);
 394         }
 395
 396         usb_free_urb(urb);
 397
 398         return err;
 399 }
 400
 401 static void btusb_isoc_complete(struct urb *urb)
 402 {
 403         struct hci_dev *hdev = urb->context;
 404         struct btusb_data *data = hdev->driver_data;
 405         int i, err;
 406
 407         BT_DBG("%s urb %p status %d count %d", hdev->name,
 408                                         urb, urb->status, urb->actual_length);
 409
 410         if (!test_bit(HCI_RUNNING, &hdev->flags))
 411                 return;
 412
 413         if (urb->status == 0) {
 414                 for (i = 0; i < urb->number_of_packets; i++) {
 415                         unsigned int offset = urb->iso_frame_desc[i].offset;
 416                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 417
 418                         if (urb->iso_frame_desc[i].status)
 419                                 continue;
 420
 421                         hdev->stat.byte_rx += length;
 422
 423                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 424                                                 urb->transfer_buffer + offset,
 425                                                                 length) < 0) {
 426                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 427                                 hdev->stat.err_rx++;
 428                         }
 429                 }
 430         }
 431
 432         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 433                 return;
 434
 435         usb_anchor_urb(urb, &data->isoc_anchor);
 436
 437         err = usb_submit_urb(urb, GFP_ATOMIC);
 438         if (err < 0) {
 439                 /* -EPERM: urb is being killed;
 440                  * -ENODEV: device got disconnected */
 441                 if (err != -EPERM && err != -ENODEV)
 442                         BT_ERR("%s urb %p failed to resubmit (%d)",
 443                                                 hdev->name, urb, -err);
 444                 usb_unanchor_urb(urb);
 445         }
 446 }
 447
 448 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 449 {
 450         int i, offset = 0;
 451
 452         BT_DBG("len %d mtu %d", len, mtu);
 453
 454         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 455                                         i++, offset += mtu, len -= mtu) {
 456                 urb->iso_frame_desc[i].offset = offset;
 457                 urb->iso_frame_desc[i].length = mtu;
 458         }
 459
 460         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 461                 urb->iso_frame_desc[i].offset = offset;
 462                 urb->iso_frame_desc[i].length = len;
 463                 i++;
 464         }
 465
 466         urb->number_of_packets = i;
 467 }
 468
 469 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 470 {
 471         struct btusb_data *data = hdev->driver_data;
 472         struct urb *urb;
 473         unsigned char *buf;
 474         unsigned int pipe;
 475         int err, size;
 476
 477         BT_DBG("%s", hdev->name);
 478
 479         if (!data->isoc_rx_ep)
 480                 return -ENODEV;
 481
 482         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 483         if (!urb)
 484                 return -ENOMEM;
 485
 486         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 487                                                 BTUSB_MAX_ISOC_FRAMES;
 488
 489         buf = kmalloc(size, mem_flags);
 490         if (!buf) {
 491                 usb_free_urb(urb);
 492                 return -ENOMEM;
 493         }
 494
 495         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 496
 497         urb->dev      = data->udev;
 498         urb->pipe     = pipe;
 499         urb->context  = hdev;
 500         urb->complete = btusb_isoc_complete;
 501         urb->interval = data->isoc_rx_ep->bInterval;
 502
 503         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 504         urb->transfer_buffer = buf;
 505         urb->transfer_buffer_length = size;
 506
 507         __fill_isoc_descriptor(urb, size,
 508                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 509
 510         usb_anchor_urb(urb, &data->isoc_anchor);
 511
 512         err = usb_submit_urb(urb, mem_flags);
 513         if (err < 0) {
 514                 BT_ERR("%s urb %p submission failed (%d)",
 515                                                 hdev->name, urb, -err);
 516                 usb_unanchor_urb(urb);
 517         }
 518
 519         usb_free_urb(urb);
 520
 521         return err;
 522 }
 523
 524 static void btusb_tx_complete(struct urb *urb)
 525 {
 526         struct sk_buff *skb = urb->context;
 527         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 528         struct btusb_data *data = hdev->driver_data;
 529
 530         BT_DBG("%s urb %p status %d count %d", hdev->name,
 531                                         urb, urb->status, urb->actual_length);
 532
 533         if (!test_bit(HCI_RUNNING, &hdev->flags))
 534                 goto done;
 535
 536         if (!urb->status)
 537                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 538         else
 539                 hdev->stat.err_tx++;
 540
 541 done:
 542         spin_lock(&data->txlock);
 543         data->tx_in_flight--;
 544         spin_unlock(&data->txlock);
 545
 546         kfree(urb->setup_packet);
 547
 548         kfree_skb(skb);
 549 }
 550
 551 static void btusb_isoc_tx_complete(struct urb *urb)
 552 {
 553         struct sk_buff *skb = urb->context;
 554         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 555
 556         BT_DBG("%s urb %p status %d count %d", hdev->name,
 557                                         urb, urb->status, urb->actual_length);
 558
 559         if (!test_bit(HCI_RUNNING, &hdev->flags))
 560                 goto done;
 561
 562         if (!urb->status)
 563                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 564         else
 565                 hdev->stat.err_tx++;
 566
 567 done:
 568         kfree(urb->setup_packet);
 569
 570         kfree_skb(skb);
 571 }
 572
 573 static int btusb_open(struct hci_dev *hdev)
 574 {
 575         struct btusb_data *data = hdev->driver_data;
 576         int err;
 577
 578         BT_DBG("%s", hdev->name);
 579
 580         err = usb_autopm_get_interface(data->intf);
 581         if (err < 0)
 582                 return err;
 583
 584         data->intf->needs_remote_wakeup = 1;
 585
 586         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 587                 goto done;
 588
 589         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 590                 goto done;
 591
 592         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 593         if (err < 0)
 594                 goto failed;
 595
 596         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 597         if (err < 0) {
 598                 usb_kill_anchored_urbs(&data->intr_anchor);
 599                 goto failed;
 600         }
 601
 602         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 603         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 604
 605 done:
 606         usb_autopm_put_interface(data->intf);
 607         return 0;
 608
 609 failed:
 610         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 611         clear_bit(HCI_RUNNING, &hdev->flags);
 612         usb_autopm_put_interface(data->intf);
 613         return err;
 614 }
 615
 616 static void btusb_stop_traffic(struct btusb_data *data)
 617 {
 618         usb_kill_anchored_urbs(&data->intr_anchor);
 619         usb_kill_anchored_urbs(&data->bulk_anchor);
 620         usb_kill_anchored_urbs(&data->isoc_anchor);
 621 }
 622
 623 static int btusb_close(struct hci_dev *hdev)
 624 {
 625         struct btusb_data *data = hdev->driver_data;
 626         int err;
 627
 628         BT_DBG("%s", hdev->name);
 629
 630         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 631                 return 0;
 632
 633         cancel_work_sync(&data->work);
 634         cancel_work_sync(&data->waker);
 635
 636         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 637         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 638         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 639
 640         btusb_stop_traffic(data);
 641         err = usb_autopm_get_interface(data->intf);
 642         if (err < 0)
 643                 goto failed;
 644
 645         data->intf->needs_remote_wakeup = 0;
 646         usb_autopm_put_interface(data->intf);
 647
 648 failed:
 649         usb_scuttle_anchored_urbs(&data->deferred);
 650         return 0;
 651 }
 652
 653 static int btusb_flush(struct hci_dev *hdev)
 654 {
 655         struct btusb_data *data = hdev->driver_data;
 656
 657         BT_DBG("%s", hdev->name);
 658
 659         usb_kill_anchored_urbs(&data->tx_anchor);
 660
 661         return 0;
 662 }
 663
 664 static int btusb_send_frame(struct sk_buff *skb)
 665 {
 666         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 667         struct btusb_data *data = hdev->driver_data;
 668         struct usb_ctrlrequest *dr;
 669         struct urb *urb;
 670         unsigned int pipe;
 671         int err;
 672
 673         BT_DBG("%s", hdev->name);
 674
 675         if (!test_bit(HCI_RUNNING, &hdev->flags))
 676                 return -EBUSY;
 677
 678         switch (bt_cb(skb)->pkt_type) {
 679         case HCI_COMMAND_PKT:
 680                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 681                 if (!urb)
 682                         return -ENOMEM;
 683
 684                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 685                 if (!dr) {
 686                         usb_free_urb(urb);
 687                         return -ENOMEM;
 688                 }
 689
 690                 dr->bRequestType = data->cmdreq_type;
 691                 dr->bRequest     = 0;
 692                 dr->wIndex       = 0;
 693                 dr->wValue       = 0;
 694                 dr->wLength      = __cpu_to_le16(skb->len);
 695
 696                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 697
 698                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 699                                 skb->data, skb->len, btusb_tx_complete, skb);
 700
 701                 hdev->stat.cmd_tx++;
 702                 break;
 703
 704         case HCI_ACLDATA_PKT:
 705                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
 706                                                 hdev->conn_hash.le_num < 1))
 707                         return -ENODEV;
 708
 709                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 710                 if (!urb)
 711                         return -ENOMEM;
 712
 713                 pipe = usb_sndbulkpipe(data->udev,
 714                                         data->bulk_tx_ep->bEndpointAddress);
 715
 716                 usb_fill_bulk_urb(urb, data->udev, pipe,
 717                                 skb->data, skb->len, btusb_tx_complete, skb);
 718
 719                 hdev->stat.acl_tx++;
 720                 break;
 721
 722         case HCI_SCODATA_PKT:
 723                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 724                         return -ENODEV;
 725
 726                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 727                 if (!urb)
 728                         return -ENOMEM;
 729
 730                 pipe = usb_sndisocpipe(data->udev,
 731                                         data->isoc_tx_ep->bEndpointAddress);
 732
 733                 usb_fill_int_urb(urb, data->udev, pipe,
 734                                 skb->data, skb->len, btusb_isoc_tx_complete,
 735                                 skb, data->isoc_tx_ep->bInterval);
 736
 737                 urb->transfer_flags  = URB_ISO_ASAP;
 738
 739                 __fill_isoc_descriptor(urb, skb->len,
 740                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 741
 742                 hdev->stat.sco_tx++;
 743                 goto skip_waking;
 744
 745         default:
 746                 return -EILSEQ;
 747         }
 748
 749         err = inc_tx(data);
 750         if (err) {
 751                 usb_anchor_urb(urb, &data->deferred);
 752                 schedule_work(&data->waker);
 753                 err = 0;
 754                 goto done;
 755         }
 756
 757 skip_waking:
 758         usb_anchor_urb(urb, &data->tx_anchor);
 759
 760         err = usb_submit_urb(urb, GFP_ATOMIC);
 761         if (err < 0) {
 762                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 763                 kfree(urb->setup_packet);
 764                 usb_unanchor_urb(urb);
 765         } else {
 766                 usb_mark_last_busy(data->udev);
 767         }
 768
 769         usb_free_urb(urb);
 770
 771 done:
 772         return err;
 773 }
 774
 775 static void btusb_destruct(struct hci_dev *hdev)
 776 {
 777         struct btusb_data *data = hdev->driver_data;
 778
 779         BT_DBG("%s", hdev->name);
 780
 781         kfree(data);
 782 }
 783
 784 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 785 {
 786         struct btusb_data *data = hdev->driver_data;
 787
 788         BT_DBG("%s evt %d", hdev->name, evt);
 789
 790         if (hdev->conn_hash.sco_num != data->sco_num) {
 791                 data->sco_num = hdev->conn_hash.sco_num;
 792                 schedule_work(&data->work);
 793         }
 794 }
 795
 796 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 797 {
 798         struct btusb_data *data = hdev->driver_data;
 799         struct usb_interface *intf = data->isoc;
 800         struct usb_endpoint_descriptor *ep_desc;
 801         int i, err;
 802
 803         if (!data->isoc)
 804                 return -ENODEV;
 805
 806         err = usb_set_interface(data->udev, 1, altsetting);
 807         if (err < 0) {
 808                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 809                 return err;
 810         }
 811
 812         data->isoc_altsetting = altsetting;
 813
 814         data->isoc_tx_ep = NULL;
 815         data->isoc_rx_ep = NULL;
 816
 817         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 818                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 819
 820                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 821                         data->isoc_tx_ep = ep_desc;
 822                         continue;
 823                 }
 824
 825                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 826                         data->isoc_rx_ep = ep_desc;
 827                         continue;
 828                 }
 829         }
 830
 831         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 832                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 833                 return -ENODEV;
 834         }
 835
 836         return 0;
 837 }
 838
 839 static void btusb_work(struct work_struct *work)
 840 {
 841         struct btusb_data *data = container_of(work, struct btusb_data, work);
 842         struct hci_dev *hdev = data->hdev;
 843         int err;
 844
 845         if (hdev->conn_hash.sco_num > 0) {
 846                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 847                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 848                         if (err < 0) {
 849                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 850                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 851                                 return;
 852                         }
 853
 854                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 855                 }
 856                 if (data->isoc_altsetting != 2) {
 857                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 858                         usb_kill_anchored_urbs(&data->isoc_anchor);
 859
 860                         if (__set_isoc_interface(hdev, 2) < 0)
 861                                 return;
 862                 }
 863
 864                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 865                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 866                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 867                         else
 868                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 869                 }
 870         } else {
 871                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 872                 usb_kill_anchored_urbs(&data->isoc_anchor);
 873
 874                 __set_isoc_interface(hdev, 0);
 875                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 876                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 877         }
 878 }
 879
 880 static void btusb_waker(struct work_struct *work)
 881 {
 882         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 883         int err;
 884
 885         err = usb_autopm_get_interface(data->intf);
 886         if (err < 0)
 887                 return;
 888
 889         usb_autopm_put_interface(data->intf);
 890 }
 891
 892 static int btusb_probe(struct usb_interface *intf,
 893                                 const struct usb_device_id *id)
 894 {
 895         struct usb_endpoint_descriptor *ep_desc;
 896         struct btusb_data *data;
 897         struct hci_dev *hdev;
 898         int i, err;
 899
 900         BT_DBG("intf %p id %p", intf, id);
 901
 902         /* interface numbers are hardcoded in the spec */
 903         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 904                 return -ENODEV;
 905
 906         if (!id->driver_info) {
 907                 const struct usb_device_id *match;
 908                 match = usb_match_id(intf, blacklist_table);
 909                 if (match)
 910                         id = match;
 911         }
 912
 913         if (id->driver_info == BTUSB_IGNORE)
 914                 return -ENODEV;
 915
 916         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 917                 return -ENODEV;
 918
 919         if (ignore_csr && id->driver_info & BTUSB_CSR)
 920                 return -ENODEV;
 921
 922         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 923                 return -ENODEV;
 924
 925         if (id->driver_info & BTUSB_ATH3012) {
 926                 struct usb_device *udev = interface_to_usbdev(intf);
 927
 928                 /* Old firmware would otherwise let ath3k driver load
 929                  * patch and sysconfig files */
 930                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 931                         return -ENODEV;
 932         }
 933
 934         data = kzalloc(sizeof(*data), GFP_KERNEL);
 935         if (!data)
 936                 return -ENOMEM;
 937
 938         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 939                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 940
 941                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 942                         data->intr_ep = ep_desc;
 943                         continue;
 944                 }
 945
 946                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 947                         data->bulk_tx_ep = ep_desc;
 948                         continue;
 949                 }
 950
 951                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 952                         data->bulk_rx_ep = ep_desc;
 953                         continue;
 954                 }
 955         }
 956
 957         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 958                 kfree(data);
 959                 return -ENODEV;
 960         }
 961
 962         data->cmdreq_type = USB_TYPE_CLASS;
 963
 964         data->udev = interface_to_usbdev(intf);
 965         data->intf = intf;
 966
 967         spin_lock_init(&data->lock);
 968
 969         INIT_WORK(&data->work, btusb_work);
 970         INIT_WORK(&data->waker, btusb_waker);
 971         spin_lock_init(&data->txlock);
 972
 973         init_usb_anchor(&data->tx_anchor);
 974         init_usb_anchor(&data->intr_anchor);
 975         init_usb_anchor(&data->bulk_anchor);
 976         init_usb_anchor(&data->isoc_anchor);
 977         init_usb_anchor(&data->deferred);
 978
 979         hdev = hci_alloc_dev();
 980         if (!hdev) {
 981                 kfree(data);
 982                 return -ENOMEM;
 983         }
 984
 985         hdev->bus = HCI_USB;
 986         hdev->driver_data = data;
 987
 988         data->hdev = hdev;
 989
 990         SET_HCIDEV_DEV(hdev, &intf->dev);
 991
 992         hdev->open     = btusb_open;
 993         hdev->close    = btusb_close;
 994         hdev->flush    = btusb_flush;
 995         hdev->send     = btusb_send_frame;
 996         hdev->destruct = btusb_destruct;
 997         hdev->notify   = btusb_notify;
 998
 999         hdev->owner = THIS_MODULE;
1000
1001         /* Interface numbers are hardcoded in the specification */
1002         data->isoc = usb_ifnum_to_if(data->udev, 1);
1003
1004         if (!reset)
1005                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1006
1007         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1008                 if (!disable_scofix)
1009                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1010         }
1011
1012         if (id->driver_info & BTUSB_BROKEN_ISOC)
1013                 data->isoc = NULL;
1014
1015         if (id->driver_info & BTUSB_DIGIANSWER) {
1016                 data->cmdreq_type = USB_TYPE_VENDOR;
1017                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1018         }
1019
1020         if (id->driver_info & BTUSB_CSR) {
1021                 struct usb_device *udev = data->udev;
1022
1023                 /* Old firmware would otherwise execute USB reset */
1024                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1025                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1026         }
1027
1028         if (id->driver_info & BTUSB_SNIFFER) {
1029                 struct usb_device *udev = data->udev;
1030
1031                 /* New sniffer firmware has crippled HCI interface */
1032                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1033                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1034
1035                 data->isoc = NULL;
1036         }
1037
1038         if (id->driver_info & BTUSB_BCM92035) {
1039                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1040                 struct sk_buff *skb;
1041
1042                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1043                 if (skb) {
1044                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1045                         skb_queue_tail(&hdev->driver_init, skb);
1046                 }
1047         }
1048
1049         if (data->isoc) {
1050                 err = usb_driver_claim_interface(&btusb_driver,
1051                                                         data->isoc, data);
1052                 if (err < 0) {
1053                         hci_free_dev(hdev);
1054                         kfree(data);
1055                         return err;
1056                 }
1057         }
1058
1059         err = hci_register_dev(hdev);
1060         if (err < 0) {
1061                 hci_free_dev(hdev);
1062                 kfree(data);
1063                 return err;
1064         }
1065
1066         usb_set_intfdata(intf, data);
1067
1068         return 0;
1069 }
1070
1071 static void btusb_disconnect(struct usb_interface *intf)
1072 {
1073         struct btusb_data *data = usb_get_intfdata(intf);
1074         struct hci_dev *hdev;
1075
1076         BT_DBG("intf %p", intf);
1077
1078         if (!data)
1079                 return;
1080
1081         hdev = data->hdev;
1082
1083         __hci_dev_hold(hdev);
1084
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_dev_put(hdev);
1098
1099         hci_free_dev(hdev);
1100 }
1101
1102 #ifdef CONFIG_PM
1103 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1104 {
1105         struct btusb_data *data = usb_get_intfdata(intf);
1106
1107         BT_DBG("intf %p", intf);
1108
1109         if (data->suspend_count++)
1110                 return 0;
1111
1112         spin_lock_irq(&data->txlock);
1113         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1114                 set_bit(BTUSB_SUSPENDING, &data->flags);
1115                 spin_unlock_irq(&data->txlock);
1116         } else {
1117                 spin_unlock_irq(&data->txlock);
1118                 data->suspend_count--;
1119                 return -EBUSY;
1120         }
1121
1122         cancel_work_sync(&data->work);
1123
1124         btusb_stop_traffic(data);
1125         usb_kill_anchored_urbs(&data->tx_anchor);
1126
1127         return 0;
1128 }
1129
1130 static void play_deferred(struct btusb_data *data)
1131 {
1132         struct urb *urb;
1133         int err;
1134
1135         while ((urb = usb_get_from_anchor(&data->deferred))) {
1136                 err = usb_submit_urb(urb, GFP_ATOMIC);
1137                 if (err < 0)
1138                         break;
1139
1140                 data->tx_in_flight++;
1141         }
1142         usb_scuttle_anchored_urbs(&data->deferred);
1143 }
1144
1145 static int btusb_resume(struct usb_interface *intf)
1146 {
1147         struct btusb_data *data = usb_get_intfdata(intf);
1148         struct hci_dev *hdev = data->hdev;
1149         int err = 0;
1150
1151         BT_DBG("intf %p", intf);
1152
1153         if (--data->suspend_count)
1154                 return 0;
1155
1156         if (!test_bit(HCI_RUNNING, &hdev->flags))
1157                 goto done;
1158
1159         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1160                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1161                 if (err < 0) {
1162                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1163                         goto failed;
1164                 }
1165         }
1166
1167         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1168                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1169                 if (err < 0) {
1170                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1171                         goto failed;
1172                 }
1173
1174                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1175         }
1176
1177         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1178                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1179                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1180                 else
1181                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1182         }
1183
1184         spin_lock_irq(&data->txlock);
1185         play_deferred(data);
1186         clear_bit(BTUSB_SUSPENDING, &data->flags);
1187         spin_unlock_irq(&data->txlock);
1188         schedule_work(&data->work);
1189
1190         return 0;
1191
1192 failed:
1193         usb_scuttle_anchored_urbs(&data->deferred);
1194 done:
1195         spin_lock_irq(&data->txlock);
1196         clear_bit(BTUSB_SUSPENDING, &data->flags);
1197         spin_unlock_irq(&data->txlock);
1198
1199         return err;
1200 }
1201 #endif
1202
1203 static struct usb_driver btusb_driver = {
1204         .name           = "btusb",
1205         .probe          = btusb_probe,
1206         .disconnect     = btusb_disconnect,
1207 #ifdef CONFIG_PM
1208         .suspend        = btusb_suspend,
1209         .resume         = btusb_resume,
1210 #endif
1211         .id_table       = btusb_table,
1212         .supports_autosuspend = 1,
1213 };
1214
1215 static int __init btusb_init(void)
1216 {
1217         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1218
1219         return usb_register(&btusb_driver);
1220 }
1221
1222 static void __exit btusb_exit(void)
1223 {
1224         usb_deregister(&btusb_driver);
1225 }
1226
1227 module_init(btusb_init);
1228 module_exit(btusb_exit);
1229
1230 module_param(ignore_dga, bool, 0644);
1231 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1232
1233 module_param(ignore_csr, bool, 0644);
1234 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1235
1236 module_param(ignore_sniffer, bool, 0644);
1237 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1238
1239 module_param(disable_scofix, bool, 0644);
1240 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1241
1242 module_param(force_scofix, bool, 0644);
1243 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1244
1245 module_param(reset, bool, 0644);
1246 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1247
1248 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1249 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1250 MODULE_VERSION(VERSION);
1251 MODULE_LICENSE("GPL");