drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static bool ignore_dga;
  41 static bool ignore_csr;
  42 static bool ignore_sniffer;
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45
  46 static bool reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58
  59 static struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x0a5c, 0x21e3) },
 106         { USB_DEVICE(0x0a5c, 0x21e6) },
 107         { USB_DEVICE(0x0a5c, 0x21e8) },
 108         { USB_DEVICE(0x0a5c, 0x21f3) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110
 111         /* Foxconn - Hon Hai */
 112         { USB_DEVICE(0x0489, 0xe033) },
 113
 114         { }     /* Terminating entry */
 115 };
 116
 117 MODULE_DEVICE_TABLE(usb, btusb_table);
 118
 119 static struct usb_device_id blacklist_table[] = {
 120         /* CSR BlueCore devices */
 121         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 122
 123         /* Broadcom BCM2033 without firmware */
 124         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 125
 126         /* Atheros 3011 with sflash firmware */
 127         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 128         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 129         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 131
 132         /* Atheros AR9285 Malbec with sflash firmware */
 133         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 134
 135         /* Atheros 3012 with sflash firmware */
 136         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 142
 143         /* Atheros AR5BBU12 with sflash firmware */
 144         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 145
 146         /* Broadcom BCM2035 */
 147         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 148         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 149         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 150
 151         /* Broadcom BCM2045 */
 152         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 154
 155         /* IBM/Lenovo ThinkPad with Broadcom chip */
 156         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 157         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* HP laptop with Broadcom chip */
 160         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 161
 162         /* Dell laptop with Broadcom chip */
 163         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 164
 165         /* Dell Wireless 370 and 410 devices */
 166         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 167         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 168
 169         /* Belkin F8T012 and F8T013 devices */
 170         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 171         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 172
 173         /* Asus WL-BTD202 device */
 174         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 175
 176         /* Kensington Bluetooth USB adapter */
 177         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 178
 179         /* RTX Telecom based adapters with buggy SCO support */
 180         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 181         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 182
 183         /* CONWISE Technology based adapters with buggy SCO support */
 184         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 185
 186         /* Digianswer devices */
 187         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 188         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 189
 190         /* CSR BlueCore Bluetooth Sniffer */
 191         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 192
 193         /* Frontline ComProbe Bluetooth Sniffer */
 194         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 195
 196         { }     /* Terminating entry */
 197 };
 198
 199 #define BTUSB_MAX_ISOC_FRAMES   10
 200
 201 #define BTUSB_INTR_RUNNING      0
 202 #define BTUSB_BULK_RUNNING      1
 203 #define BTUSB_ISOC_RUNNING      2
 204 #define BTUSB_SUSPENDING        3
 205 #define BTUSB_DID_ISO_RESUME    4
 206
 207 struct btusb_data {
 208         struct hci_dev       *hdev;
 209         struct usb_device    *udev;
 210         struct usb_interface *intf;
 211         struct usb_interface *isoc;
 212
 213         spinlock_t lock;
 214
 215         unsigned long flags;
 216
 217         struct work_struct work;
 218         struct work_struct waker;
 219
 220         struct usb_anchor tx_anchor;
 221         struct usb_anchor intr_anchor;
 222         struct usb_anchor bulk_anchor;
 223         struct usb_anchor isoc_anchor;
 224         struct usb_anchor deferred;
 225         int tx_in_flight;
 226         spinlock_t txlock;
 227
 228         struct usb_endpoint_descriptor *intr_ep;
 229         struct usb_endpoint_descriptor *bulk_tx_ep;
 230         struct usb_endpoint_descriptor *bulk_rx_ep;
 231         struct usb_endpoint_descriptor *isoc_tx_ep;
 232         struct usb_endpoint_descriptor *isoc_rx_ep;
 233
 234         __u8 cmdreq_type;
 235
 236         unsigned int sco_num;
 237         int isoc_altsetting;
 238         int suspend_count;
 239 };
 240
 241 static int inc_tx(struct btusb_data *data)
 242 {
 243         unsigned long flags;
 244         int rv;
 245
 246         spin_lock_irqsave(&data->txlock, flags);
 247         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 248         if (!rv)
 249                 data->tx_in_flight++;
 250         spin_unlock_irqrestore(&data->txlock, flags);
 251
 252         return rv;
 253 }
 254
 255 static void btusb_intr_complete(struct urb *urb)
 256 {
 257         struct hci_dev *hdev = urb->context;
 258         struct btusb_data *data = hci_get_drvdata(hdev);
 259         int err;
 260
 261         BT_DBG("%s urb %p status %d count %d", hdev->name,
 262                                         urb, urb->status, urb->actual_length);
 263
 264         if (!test_bit(HCI_RUNNING, &hdev->flags))
 265                 return;
 266
 267         if (urb->status == 0) {
 268                 hdev->stat.byte_rx += urb->actual_length;
 269
 270                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 271                                                 urb->transfer_buffer,
 272                                                 urb->actual_length) < 0) {
 273                         BT_ERR("%s corrupted event packet", hdev->name);
 274                         hdev->stat.err_rx++;
 275                 }
 276         }
 277
 278         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 279                 return;
 280
 281         usb_mark_last_busy(data->udev);
 282         usb_anchor_urb(urb, &data->intr_anchor);
 283
 284         err = usb_submit_urb(urb, GFP_ATOMIC);
 285         if (err < 0) {
 286                 /* -EPERM: urb is being killed;
 287                  * -ENODEV: device got disconnected */
 288                 if (err != -EPERM && err != -ENODEV)
 289                         BT_ERR("%s urb %p failed to resubmit (%d)",
 290                                                 hdev->name, urb, -err);
 291                 usb_unanchor_urb(urb);
 292         }
 293 }
 294
 295 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 296 {
 297         struct btusb_data *data = hci_get_drvdata(hdev);
 298         struct urb *urb;
 299         unsigned char *buf;
 300         unsigned int pipe;
 301         int err, size;
 302
 303         BT_DBG("%s", hdev->name);
 304
 305         if (!data->intr_ep)
 306                 return -ENODEV;
 307
 308         urb = usb_alloc_urb(0, mem_flags);
 309         if (!urb)
 310                 return -ENOMEM;
 311
 312         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 313
 314         buf = kmalloc(size, mem_flags);
 315         if (!buf) {
 316                 usb_free_urb(urb);
 317                 return -ENOMEM;
 318         }
 319
 320         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 321
 322         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 323                                                 btusb_intr_complete, hdev,
 324                                                 data->intr_ep->bInterval);
 325
 326         urb->transfer_flags |= URB_FREE_BUFFER;
 327
 328         usb_anchor_urb(urb, &data->intr_anchor);
 329
 330         err = usb_submit_urb(urb, mem_flags);
 331         if (err < 0) {
 332                 if (err != -EPERM && err != -ENODEV)
 333                         BT_ERR("%s urb %p submission failed (%d)",
 334                                                 hdev->name, urb, -err);
 335                 usb_unanchor_urb(urb);
 336         }
 337
 338         usb_free_urb(urb);
 339
 340         return err;
 341 }
 342
 343 static void btusb_bulk_complete(struct urb *urb)
 344 {
 345         struct hci_dev *hdev = urb->context;
 346         struct btusb_data *data = hci_get_drvdata(hdev);
 347         int err;
 348
 349         BT_DBG("%s urb %p status %d count %d", hdev->name,
 350                                         urb, urb->status, urb->actual_length);
 351
 352         if (!test_bit(HCI_RUNNING, &hdev->flags))
 353                 return;
 354
 355         if (urb->status == 0) {
 356                 hdev->stat.byte_rx += urb->actual_length;
 357
 358                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 359                                                 urb->transfer_buffer,
 360                                                 urb->actual_length) < 0) {
 361                         BT_ERR("%s corrupted ACL packet", hdev->name);
 362                         hdev->stat.err_rx++;
 363                 }
 364         }
 365
 366         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 367                 return;
 368
 369         usb_anchor_urb(urb, &data->bulk_anchor);
 370         usb_mark_last_busy(data->udev);
 371
 372         err = usb_submit_urb(urb, GFP_ATOMIC);
 373         if (err < 0) {
 374                 /* -EPERM: urb is being killed;
 375                  * -ENODEV: device got disconnected */
 376                 if (err != -EPERM && err != -ENODEV)
 377                         BT_ERR("%s urb %p failed to resubmit (%d)",
 378                                                 hdev->name, urb, -err);
 379                 usb_unanchor_urb(urb);
 380         }
 381 }
 382
 383 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 384 {
 385         struct btusb_data *data = hci_get_drvdata(hdev);
 386         struct urb *urb;
 387         unsigned char *buf;
 388         unsigned int pipe;
 389         int err, size = HCI_MAX_FRAME_SIZE;
 390
 391         BT_DBG("%s", hdev->name);
 392
 393         if (!data->bulk_rx_ep)
 394                 return -ENODEV;
 395
 396         urb = usb_alloc_urb(0, mem_flags);
 397         if (!urb)
 398                 return -ENOMEM;
 399
 400         buf = kmalloc(size, mem_flags);
 401         if (!buf) {
 402                 usb_free_urb(urb);
 403                 return -ENOMEM;
 404         }
 405
 406         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 407
 408         usb_fill_bulk_urb(urb, data->udev, pipe,
 409                                         buf, size, btusb_bulk_complete, hdev);
 410
 411         urb->transfer_flags |= URB_FREE_BUFFER;
 412
 413         usb_mark_last_busy(data->udev);
 414         usb_anchor_urb(urb, &data->bulk_anchor);
 415
 416         err = usb_submit_urb(urb, mem_flags);
 417         if (err < 0) {
 418                 if (err != -EPERM && err != -ENODEV)
 419                         BT_ERR("%s urb %p submission failed (%d)",
 420                                                 hdev->name, urb, -err);
 421                 usb_unanchor_urb(urb);
 422         }
 423
 424         usb_free_urb(urb);
 425
 426         return err;
 427 }
 428
 429 static void btusb_isoc_complete(struct urb *urb)
 430 {
 431         struct hci_dev *hdev = urb->context;
 432         struct btusb_data *data = hci_get_drvdata(hdev);
 433         int i, err;
 434
 435         BT_DBG("%s urb %p status %d count %d", hdev->name,
 436                                         urb, urb->status, urb->actual_length);
 437
 438         if (!test_bit(HCI_RUNNING, &hdev->flags))
 439                 return;
 440
 441         if (urb->status == 0) {
 442                 for (i = 0; i < urb->number_of_packets; i++) {
 443                         unsigned int offset = urb->iso_frame_desc[i].offset;
 444                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 445
 446                         if (urb->iso_frame_desc[i].status)
 447                                 continue;
 448
 449                         hdev->stat.byte_rx += length;
 450
 451                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 452                                                 urb->transfer_buffer + offset,
 453                                                                 length) < 0) {
 454                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 455                                 hdev->stat.err_rx++;
 456                         }
 457                 }
 458         }
 459
 460         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 461                 return;
 462
 463         usb_anchor_urb(urb, &data->isoc_anchor);
 464
 465         err = usb_submit_urb(urb, GFP_ATOMIC);
 466         if (err < 0) {
 467                 /* -EPERM: urb is being killed;
 468                  * -ENODEV: device got disconnected */
 469                 if (err != -EPERM && err != -ENODEV)
 470                         BT_ERR("%s urb %p failed to resubmit (%d)",
 471                                                 hdev->name, urb, -err);
 472                 usb_unanchor_urb(urb);
 473         }
 474 }
 475
 476 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 477 {
 478         int i, offset = 0;
 479
 480         BT_DBG("len %d mtu %d", len, mtu);
 481
 482         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 483                                         i++, offset += mtu, len -= mtu) {
 484                 urb->iso_frame_desc[i].offset = offset;
 485                 urb->iso_frame_desc[i].length = mtu;
 486         }
 487
 488         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 489                 urb->iso_frame_desc[i].offset = offset;
 490                 urb->iso_frame_desc[i].length = len;
 491                 i++;
 492         }
 493
 494         urb->number_of_packets = i;
 495 }
 496
 497 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 498 {
 499         struct btusb_data *data = hci_get_drvdata(hdev);
 500         struct urb *urb;
 501         unsigned char *buf;
 502         unsigned int pipe;
 503         int err, size;
 504
 505         BT_DBG("%s", hdev->name);
 506
 507         if (!data->isoc_rx_ep)
 508                 return -ENODEV;
 509
 510         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 511         if (!urb)
 512                 return -ENOMEM;
 513
 514         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 515                                                 BTUSB_MAX_ISOC_FRAMES;
 516
 517         buf = kmalloc(size, mem_flags);
 518         if (!buf) {
 519                 usb_free_urb(urb);
 520                 return -ENOMEM;
 521         }
 522
 523         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 524
 525         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 526                                 hdev, data->isoc_rx_ep->bInterval);
 527
 528         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 529
 530         __fill_isoc_descriptor(urb, size,
 531                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 532
 533         usb_anchor_urb(urb, &data->isoc_anchor);
 534
 535         err = usb_submit_urb(urb, mem_flags);
 536         if (err < 0) {
 537                 if (err != -EPERM && err != -ENODEV)
 538                         BT_ERR("%s urb %p submission failed (%d)",
 539                                                 hdev->name, urb, -err);
 540                 usb_unanchor_urb(urb);
 541         }
 542
 543         usb_free_urb(urb);
 544
 545         return err;
 546 }
 547
 548 static void btusb_tx_complete(struct urb *urb)
 549 {
 550         struct sk_buff *skb = urb->context;
 551         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 552         struct btusb_data *data = hci_get_drvdata(hdev);
 553
 554         BT_DBG("%s urb %p status %d count %d", hdev->name,
 555                                         urb, urb->status, urb->actual_length);
 556
 557         if (!test_bit(HCI_RUNNING, &hdev->flags))
 558                 goto done;
 559
 560         if (!urb->status)
 561                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 562         else
 563                 hdev->stat.err_tx++;
 564
 565 done:
 566         spin_lock(&data->txlock);
 567         data->tx_in_flight--;
 568         spin_unlock(&data->txlock);
 569
 570         kfree(urb->setup_packet);
 571
 572         kfree_skb(skb);
 573 }
 574
 575 static void btusb_isoc_tx_complete(struct urb *urb)
 576 {
 577         struct sk_buff *skb = urb->context;
 578         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 579
 580         BT_DBG("%s urb %p status %d count %d", hdev->name,
 581                                         urb, urb->status, urb->actual_length);
 582
 583         if (!test_bit(HCI_RUNNING, &hdev->flags))
 584                 goto done;
 585
 586         if (!urb->status)
 587                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 588         else
 589                 hdev->stat.err_tx++;
 590
 591 done:
 592         kfree(urb->setup_packet);
 593
 594         kfree_skb(skb);
 595 }
 596
 597 static int btusb_open(struct hci_dev *hdev)
 598 {
 599         struct btusb_data *data = hci_get_drvdata(hdev);
 600         int err;
 601
 602         BT_DBG("%s", hdev->name);
 603
 604         err = usb_autopm_get_interface(data->intf);
 605         if (err < 0)
 606                 return err;
 607
 608         data->intf->needs_remote_wakeup = 1;
 609
 610         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 611                 goto done;
 612
 613         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 614                 goto done;
 615
 616         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 617         if (err < 0)
 618                 goto failed;
 619
 620         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 621         if (err < 0) {
 622                 usb_kill_anchored_urbs(&data->intr_anchor);
 623                 goto failed;
 624         }
 625
 626         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 627         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 628
 629 done:
 630         usb_autopm_put_interface(data->intf);
 631         return 0;
 632
 633 failed:
 634         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 635         clear_bit(HCI_RUNNING, &hdev->flags);
 636         usb_autopm_put_interface(data->intf);
 637         return err;
 638 }
 639
 640 static void btusb_stop_traffic(struct btusb_data *data)
 641 {
 642         usb_kill_anchored_urbs(&data->intr_anchor);
 643         usb_kill_anchored_urbs(&data->bulk_anchor);
 644         usb_kill_anchored_urbs(&data->isoc_anchor);
 645 }
 646
 647 static int btusb_close(struct hci_dev *hdev)
 648 {
 649         struct btusb_data *data = hci_get_drvdata(hdev);
 650         int err;
 651
 652         BT_DBG("%s", hdev->name);
 653
 654         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 655                 return 0;
 656
 657         cancel_work_sync(&data->work);
 658         cancel_work_sync(&data->waker);
 659
 660         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 661         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 662         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 663
 664         btusb_stop_traffic(data);
 665         err = usb_autopm_get_interface(data->intf);
 666         if (err < 0)
 667                 goto failed;
 668
 669         data->intf->needs_remote_wakeup = 0;
 670         usb_autopm_put_interface(data->intf);
 671
 672 failed:
 673         usb_scuttle_anchored_urbs(&data->deferred);
 674         return 0;
 675 }
 676
 677 static int btusb_flush(struct hci_dev *hdev)
 678 {
 679         struct btusb_data *data = hci_get_drvdata(hdev);
 680
 681         BT_DBG("%s", hdev->name);
 682
 683         usb_kill_anchored_urbs(&data->tx_anchor);
 684
 685         return 0;
 686 }
 687
 688 static int btusb_send_frame(struct sk_buff *skb)
 689 {
 690         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 691         struct btusb_data *data = hci_get_drvdata(hdev);
 692         struct usb_ctrlrequest *dr;
 693         struct urb *urb;
 694         unsigned int pipe;
 695         int err;
 696
 697         BT_DBG("%s", hdev->name);
 698
 699         if (!test_bit(HCI_RUNNING, &hdev->flags))
 700                 return -EBUSY;
 701
 702         switch (bt_cb(skb)->pkt_type) {
 703         case HCI_COMMAND_PKT:
 704                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 705                 if (!urb)
 706                         return -ENOMEM;
 707
 708                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 709                 if (!dr) {
 710                         usb_free_urb(urb);
 711                         return -ENOMEM;
 712                 }
 713
 714                 dr->bRequestType = data->cmdreq_type;
 715                 dr->bRequest     = 0;
 716                 dr->wIndex       = 0;
 717                 dr->wValue       = 0;
 718                 dr->wLength      = __cpu_to_le16(skb->len);
 719
 720                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 721
 722                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 723                                 skb->data, skb->len, btusb_tx_complete, skb);
 724
 725                 hdev->stat.cmd_tx++;
 726                 break;
 727
 728         case HCI_ACLDATA_PKT:
 729                 if (!data->bulk_tx_ep)
 730                         return -ENODEV;
 731
 732                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 733                 if (!urb)
 734                         return -ENOMEM;
 735
 736                 pipe = usb_sndbulkpipe(data->udev,
 737                                         data->bulk_tx_ep->bEndpointAddress);
 738
 739                 usb_fill_bulk_urb(urb, data->udev, pipe,
 740                                 skb->data, skb->len, btusb_tx_complete, skb);
 741
 742                 hdev->stat.acl_tx++;
 743                 break;
 744
 745         case HCI_SCODATA_PKT:
 746                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 747                         return -ENODEV;
 748
 749                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 750                 if (!urb)
 751                         return -ENOMEM;
 752
 753                 pipe = usb_sndisocpipe(data->udev,
 754                                         data->isoc_tx_ep->bEndpointAddress);
 755
 756                 usb_fill_int_urb(urb, data->udev, pipe,
 757                                 skb->data, skb->len, btusb_isoc_tx_complete,
 758                                 skb, data->isoc_tx_ep->bInterval);
 759
 760                 urb->transfer_flags  = URB_ISO_ASAP;
 761
 762                 __fill_isoc_descriptor(urb, skb->len,
 763                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 764
 765                 hdev->stat.sco_tx++;
 766                 goto skip_waking;
 767
 768         default:
 769                 return -EILSEQ;
 770         }
 771
 772         err = inc_tx(data);
 773         if (err) {
 774                 usb_anchor_urb(urb, &data->deferred);
 775                 schedule_work(&data->waker);
 776                 err = 0;
 777                 goto done;
 778         }
 779
 780 skip_waking:
 781         usb_anchor_urb(urb, &data->tx_anchor);
 782
 783         err = usb_submit_urb(urb, GFP_ATOMIC);
 784         if (err < 0) {
 785                 if (err != -EPERM && err != -ENODEV)
 786                         BT_ERR("%s urb %p submission failed (%d)",
 787                                                 hdev->name, urb, -err);
 788                 kfree(urb->setup_packet);
 789                 usb_unanchor_urb(urb);
 790         } else {
 791                 usb_mark_last_busy(data->udev);
 792         }
 793
 794 done:
 795         usb_free_urb(urb);
 796         return err;
 797 }
 798
 799 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 800 {
 801         struct btusb_data *data = hci_get_drvdata(hdev);
 802
 803         BT_DBG("%s evt %d", hdev->name, evt);
 804
 805         if (hdev->conn_hash.sco_num != data->sco_num) {
 806                 data->sco_num = hdev->conn_hash.sco_num;
 807                 schedule_work(&data->work);
 808         }
 809 }
 810
 811 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 812 {
 813         struct btusb_data *data = hci_get_drvdata(hdev);
 814         struct usb_interface *intf = data->isoc;
 815         struct usb_endpoint_descriptor *ep_desc;
 816         int i, err;
 817
 818         if (!data->isoc)
 819                 return -ENODEV;
 820
 821         err = usb_set_interface(data->udev, 1, altsetting);
 822         if (err < 0) {
 823                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 824                 return err;
 825         }
 826
 827         data->isoc_altsetting = altsetting;
 828
 829         data->isoc_tx_ep = NULL;
 830         data->isoc_rx_ep = NULL;
 831
 832         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 833                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 834
 835                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 836                         data->isoc_tx_ep = ep_desc;
 837                         continue;
 838                 }
 839
 840                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 841                         data->isoc_rx_ep = ep_desc;
 842                         continue;
 843                 }
 844         }
 845
 846         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 847                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 848                 return -ENODEV;
 849         }
 850
 851         return 0;
 852 }
 853
 854 static void btusb_work(struct work_struct *work)
 855 {
 856         struct btusb_data *data = container_of(work, struct btusb_data, work);
 857         struct hci_dev *hdev = data->hdev;
 858         int err;
 859
 860         if (hdev->conn_hash.sco_num > 0) {
 861                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 862                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 863                         if (err < 0) {
 864                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 865                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 866                                 return;
 867                         }
 868
 869                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 870                 }
 871                 if (data->isoc_altsetting != 2) {
 872                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 873                         usb_kill_anchored_urbs(&data->isoc_anchor);
 874
 875                         if (__set_isoc_interface(hdev, 2) < 0)
 876                                 return;
 877                 }
 878
 879                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 880                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 881                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 882                         else
 883                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 884                 }
 885         } else {
 886                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 887                 usb_kill_anchored_urbs(&data->isoc_anchor);
 888
 889                 __set_isoc_interface(hdev, 0);
 890                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 891                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 892         }
 893 }
 894
 895 static void btusb_waker(struct work_struct *work)
 896 {
 897         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 898         int err;
 899
 900         err = usb_autopm_get_interface(data->intf);
 901         if (err < 0)
 902                 return;
 903
 904         usb_autopm_put_interface(data->intf);
 905 }
 906
 907 static int btusb_probe(struct usb_interface *intf,
 908                                 const struct usb_device_id *id)
 909 {
 910         struct usb_endpoint_descriptor *ep_desc;
 911         struct btusb_data *data;
 912         struct hci_dev *hdev;
 913         int i, err;
 914
 915         BT_DBG("intf %p id %p", intf, id);
 916
 917         /* interface numbers are hardcoded in the spec */
 918         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 919                 return -ENODEV;
 920
 921         if (!id->driver_info) {
 922                 const struct usb_device_id *match;
 923                 match = usb_match_id(intf, blacklist_table);
 924                 if (match)
 925                         id = match;
 926         }
 927
 928         if (id->driver_info == BTUSB_IGNORE)
 929                 return -ENODEV;
 930
 931         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 932                 return -ENODEV;
 933
 934         if (ignore_csr && id->driver_info & BTUSB_CSR)
 935                 return -ENODEV;
 936
 937         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 938                 return -ENODEV;
 939
 940         if (id->driver_info & BTUSB_ATH3012) {
 941                 struct usb_device *udev = interface_to_usbdev(intf);
 942
 943                 /* Old firmware would otherwise let ath3k driver load
 944                  * patch and sysconfig files */
 945                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 946                         return -ENODEV;
 947         }
 948
 949         data = kzalloc(sizeof(*data), GFP_KERNEL);
 950         if (!data)
 951                 return -ENOMEM;
 952
 953         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 954                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 955
 956                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 957                         data->intr_ep = ep_desc;
 958                         continue;
 959                 }
 960
 961                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 962                         data->bulk_tx_ep = ep_desc;
 963                         continue;
 964                 }
 965
 966                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 967                         data->bulk_rx_ep = ep_desc;
 968                         continue;
 969                 }
 970         }
 971
 972         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 973                 kfree(data);
 974                 return -ENODEV;
 975         }
 976
 977         data->cmdreq_type = USB_TYPE_CLASS;
 978
 979         data->udev = interface_to_usbdev(intf);
 980         data->intf = intf;
 981
 982         spin_lock_init(&data->lock);
 983
 984         INIT_WORK(&data->work, btusb_work);
 985         INIT_WORK(&data->waker, btusb_waker);
 986         spin_lock_init(&data->txlock);
 987
 988         init_usb_anchor(&data->tx_anchor);
 989         init_usb_anchor(&data->intr_anchor);
 990         init_usb_anchor(&data->bulk_anchor);
 991         init_usb_anchor(&data->isoc_anchor);
 992         init_usb_anchor(&data->deferred);
 993
 994         hdev = hci_alloc_dev();
 995         if (!hdev) {
 996                 kfree(data);
 997                 return -ENOMEM;
 998         }
 999
1000         hdev->bus = HCI_USB;
1001         hci_set_drvdata(hdev, data);
1002
1003         data->hdev = hdev;
1004
1005         SET_HCIDEV_DEV(hdev, &intf->dev);
1006
1007         hdev->open     = btusb_open;
1008         hdev->close    = btusb_close;
1009         hdev->flush    = btusb_flush;
1010         hdev->send     = btusb_send_frame;
1011         hdev->notify   = btusb_notify;
1012
1013         /* Interface numbers are hardcoded in the specification */
1014         data->isoc = usb_ifnum_to_if(data->udev, 1);
1015
1016         if (!reset)
1017                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1018
1019         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1020                 if (!disable_scofix)
1021                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1022         }
1023
1024         if (id->driver_info & BTUSB_BROKEN_ISOC)
1025                 data->isoc = NULL;
1026
1027         if (id->driver_info & BTUSB_DIGIANSWER) {
1028                 data->cmdreq_type = USB_TYPE_VENDOR;
1029                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1030         }
1031
1032         if (id->driver_info & BTUSB_CSR) {
1033                 struct usb_device *udev = data->udev;
1034
1035                 /* Old firmware would otherwise execute USB reset */
1036                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1037                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1038         }
1039
1040         if (id->driver_info & BTUSB_SNIFFER) {
1041                 struct usb_device *udev = data->udev;
1042
1043                 /* New sniffer firmware has crippled HCI interface */
1044                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1045                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1046
1047                 data->isoc = NULL;
1048         }
1049
1050         if (id->driver_info & BTUSB_BCM92035) {
1051                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1052                 struct sk_buff *skb;
1053
1054                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1055                 if (skb) {
1056                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1057                         skb_queue_tail(&hdev->driver_init, skb);
1058                 }
1059         }
1060
1061         if (data->isoc) {
1062                 err = usb_driver_claim_interface(&btusb_driver,
1063                                                         data->isoc, data);
1064                 if (err < 0) {
1065                         hci_free_dev(hdev);
1066                         kfree(data);
1067                         return err;
1068                 }
1069         }
1070
1071         err = hci_register_dev(hdev);
1072         if (err < 0) {
1073                 hci_free_dev(hdev);
1074                 kfree(data);
1075                 return err;
1076         }
1077
1078         usb_set_intfdata(intf, data);
1079
1080         return 0;
1081 }
1082
1083 static void btusb_disconnect(struct usb_interface *intf)
1084 {
1085         struct btusb_data *data = usb_get_intfdata(intf);
1086         struct hci_dev *hdev;
1087
1088         BT_DBG("intf %p", intf);
1089
1090         if (!data)
1091                 return;
1092
1093         hdev = data->hdev;
1094         usb_set_intfdata(data->intf, NULL);
1095
1096         if (data->isoc)
1097                 usb_set_intfdata(data->isoc, NULL);
1098
1099         hci_unregister_dev(hdev);
1100
1101         if (intf == data->isoc)
1102                 usb_driver_release_interface(&btusb_driver, data->intf);
1103         else if (data->isoc)
1104                 usb_driver_release_interface(&btusb_driver, data->isoc);
1105
1106         hci_free_dev(hdev);
1107         kfree(data);
1108 }
1109
1110 #ifdef CONFIG_PM
1111 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1112 {
1113         struct btusb_data *data = usb_get_intfdata(intf);
1114
1115         BT_DBG("intf %p", intf);
1116
1117         if (data->suspend_count++)
1118                 return 0;
1119
1120         spin_lock_irq(&data->txlock);
1121         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1122                 set_bit(BTUSB_SUSPENDING, &data->flags);
1123                 spin_unlock_irq(&data->txlock);
1124         } else {
1125                 spin_unlock_irq(&data->txlock);
1126                 data->suspend_count--;
1127                 return -EBUSY;
1128         }
1129
1130         cancel_work_sync(&data->work);
1131
1132         btusb_stop_traffic(data);
1133         usb_kill_anchored_urbs(&data->tx_anchor);
1134
1135         return 0;
1136 }
1137
1138 static void play_deferred(struct btusb_data *data)
1139 {
1140         struct urb *urb;
1141         int err;
1142
1143         while ((urb = usb_get_from_anchor(&data->deferred))) {
1144                 err = usb_submit_urb(urb, GFP_ATOMIC);
1145                 if (err < 0)
1146                         break;
1147
1148                 data->tx_in_flight++;
1149         }
1150         usb_scuttle_anchored_urbs(&data->deferred);
1151 }
1152
1153 static int btusb_resume(struct usb_interface *intf)
1154 {
1155         struct btusb_data *data = usb_get_intfdata(intf);
1156         struct hci_dev *hdev = data->hdev;
1157         int err = 0;
1158
1159         BT_DBG("intf %p", intf);
1160
1161         if (--data->suspend_count)
1162                 return 0;
1163
1164         if (!test_bit(HCI_RUNNING, &hdev->flags))
1165                 goto done;
1166
1167         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1168                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1169                 if (err < 0) {
1170                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1171                         goto failed;
1172                 }
1173         }
1174
1175         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1176                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1177                 if (err < 0) {
1178                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1179                         goto failed;
1180                 }
1181
1182                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1183         }
1184
1185         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1186                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1187                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1188                 else
1189                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1190         }
1191
1192         spin_lock_irq(&data->txlock);
1193         play_deferred(data);
1194         clear_bit(BTUSB_SUSPENDING, &data->flags);
1195         spin_unlock_irq(&data->txlock);
1196         schedule_work(&data->work);
1197
1198         return 0;
1199
1200 failed:
1201         usb_scuttle_anchored_urbs(&data->deferred);
1202 done:
1203         spin_lock_irq(&data->txlock);
1204         clear_bit(BTUSB_SUSPENDING, &data->flags);
1205         spin_unlock_irq(&data->txlock);
1206
1207         return err;
1208 }
1209 #endif
1210
1211 static struct usb_driver btusb_driver = {
1212         .name           = "btusb",
1213         .probe          = btusb_probe,
1214         .disconnect     = btusb_disconnect,
1215 #ifdef CONFIG_PM
1216         .suspend        = btusb_suspend,
1217         .resume         = btusb_resume,
1218 #endif
1219         .id_table       = btusb_table,
1220         .supports_autosuspend = 1,
1221 };
1222
1223 module_usb_driver(btusb_driver);
1224
1225 module_param(ignore_dga, bool, 0644);
1226 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1227
1228 module_param(ignore_csr, bool, 0644);
1229 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1230
1231 module_param(ignore_sniffer, bool, 0644);
1232 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1233
1234 module_param(disable_scofix, bool, 0644);
1235 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1236
1237 module_param(force_scofix, bool, 0644);
1238 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1239
1240 module_param(reset, bool, 0644);
1241 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1242
1243 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1244 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1245 MODULE_VERSION(VERSION);
1246 MODULE_LICENSE("GPL");