drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <[email protected]>
   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         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x05ac, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x413c, 0x8197) },
 105
 106         { }     /* Terminating entry */
 107 };
 108
 109 MODULE_DEVICE_TABLE(usb, btusb_table);
 110
 111 static struct usb_device_id blacklist_table[] = {
 112         /* CSR BlueCore devices */
 113         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 114
 115         /* Broadcom BCM2033 without firmware */
 116         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 117
 118         /* Atheros 3011 with sflash firmware */
 119         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 120         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 121         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 122
 123         /* Atheros AR9285 Malbec with sflash firmware */
 124         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 125
 126         /* Atheros 3012 with sflash firmware */
 127         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 128
 129         /* Atheros AR5BBU12 with sflash firmware */
 130         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 131
 132         /* Broadcom BCM2035 */
 133         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 134         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 135         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 136
 137         /* Broadcom BCM2045 */
 138         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 139         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 140
 141         /* IBM/Lenovo ThinkPad with Broadcom chip */
 142         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 143         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 144
 145         /* HP laptop with Broadcom chip */
 146         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 147
 148         /* Dell laptop with Broadcom chip */
 149         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 150
 151         /* Dell Wireless 370 and 410 devices */
 152         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 154
 155         /* Belkin F8T012 and F8T013 devices */
 156         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 157         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 158
 159         /* Asus WL-BTD202 device */
 160         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 161
 162         /* Kensington Bluetooth USB adapter */
 163         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 164
 165         /* RTX Telecom based adapters with buggy SCO support */
 166         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 167         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 168
 169         /* CONWISE Technology based adapters with buggy SCO support */
 170         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 171
 172         /* Digianswer devices */
 173         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 174         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 175
 176         /* CSR BlueCore Bluetooth Sniffer */
 177         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 178
 179         /* Frontline ComProbe Bluetooth Sniffer */
 180         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 181
 182         { }     /* Terminating entry */
 183 };
 184
 185 #define BTUSB_MAX_ISOC_FRAMES   10
 186
 187 #define BTUSB_INTR_RUNNING      0
 188 #define BTUSB_BULK_RUNNING      1
 189 #define BTUSB_ISOC_RUNNING      2
 190 #define BTUSB_SUSPENDING        3
 191 #define BTUSB_DID_ISO_RESUME    4
 192
 193 struct btusb_data {
 194         struct hci_dev       *hdev;
 195         struct usb_device    *udev;
 196         struct usb_interface *intf;
 197         struct usb_interface *isoc;
 198
 199         spinlock_t lock;
 200
 201         unsigned long flags;
 202
 203         struct work_struct work;
 204         struct work_struct waker;
 205
 206         struct usb_anchor tx_anchor;
 207         struct usb_anchor intr_anchor;
 208         struct usb_anchor bulk_anchor;
 209         struct usb_anchor isoc_anchor;
 210         struct usb_anchor deferred;
 211         int tx_in_flight;
 212         spinlock_t txlock;
 213
 214         struct usb_endpoint_descriptor *intr_ep;
 215         struct usb_endpoint_descriptor *bulk_tx_ep;
 216         struct usb_endpoint_descriptor *bulk_rx_ep;
 217         struct usb_endpoint_descriptor *isoc_tx_ep;
 218         struct usb_endpoint_descriptor *isoc_rx_ep;
 219
 220         __u8 cmdreq_type;
 221
 222         unsigned int sco_num;
 223         int isoc_altsetting;
 224         int suspend_count;
 225 };
 226
 227 static int inc_tx(struct btusb_data *data)
 228 {
 229         unsigned long flags;
 230         int rv;
 231
 232         spin_lock_irqsave(&data->txlock, flags);
 233         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 234         if (!rv)
 235                 data->tx_in_flight++;
 236         spin_unlock_irqrestore(&data->txlock, flags);
 237
 238         return rv;
 239 }
 240
 241 static void btusb_intr_complete(struct urb *urb)
 242 {
 243         struct hci_dev *hdev = urb->context;
 244         struct btusb_data *data = hdev->driver_data;
 245         int err;
 246
 247         BT_DBG("%s urb %p status %d count %d", hdev->name,
 248                                         urb, urb->status, urb->actual_length);
 249
 250         if (!test_bit(HCI_RUNNING, &hdev->flags))
 251                 return;
 252
 253         if (urb->status == 0) {
 254                 hdev->stat.byte_rx += urb->actual_length;
 255
 256                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 257                                                 urb->transfer_buffer,
 258                                                 urb->actual_length) < 0) {
 259                         BT_ERR("%s corrupted event packet", hdev->name);
 260                         hdev->stat.err_rx++;
 261                 }
 262         }
 263
 264         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 265                 return;
 266
 267         usb_mark_last_busy(data->udev);
 268         usb_anchor_urb(urb, &data->intr_anchor);
 269
 270         err = usb_submit_urb(urb, GFP_ATOMIC);
 271         if (err < 0) {
 272                 /* -EPERM: urb is being killed;
 273                  * -ENODEV: device got disconnected */
 274                 if (err != -EPERM && err != -ENODEV)
 275                         BT_ERR("%s urb %p failed to resubmit (%d)",
 276                                                 hdev->name, urb, -err);
 277                 usb_unanchor_urb(urb);
 278         }
 279 }
 280
 281 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 282 {
 283         struct btusb_data *data = hdev->driver_data;
 284         struct urb *urb;
 285         unsigned char *buf;
 286         unsigned int pipe;
 287         int err, size;
 288
 289         BT_DBG("%s", hdev->name);
 290
 291         if (!data->intr_ep)
 292                 return -ENODEV;
 293
 294         urb = usb_alloc_urb(0, mem_flags);
 295         if (!urb)
 296                 return -ENOMEM;
 297
 298         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 299
 300         buf = kmalloc(size, mem_flags);
 301         if (!buf) {
 302                 usb_free_urb(urb);
 303                 return -ENOMEM;
 304         }
 305
 306         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 307
 308         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 309                                                 btusb_intr_complete, hdev,
 310                                                 data->intr_ep->bInterval);
 311
 312         urb->transfer_flags |= URB_FREE_BUFFER;
 313
 314         usb_anchor_urb(urb, &data->intr_anchor);
 315
 316         err = usb_submit_urb(urb, mem_flags);
 317         if (err < 0) {
 318                 BT_ERR("%s urb %p submission failed (%d)",
 319                                                 hdev->name, urb, -err);
 320                 usb_unanchor_urb(urb);
 321         }
 322
 323         usb_free_urb(urb);
 324
 325         return err;
 326 }
 327
 328 static void btusb_bulk_complete(struct urb *urb)
 329 {
 330         struct hci_dev *hdev = urb->context;
 331         struct btusb_data *data = hdev->driver_data;
 332         int err;
 333
 334         BT_DBG("%s urb %p status %d count %d", hdev->name,
 335                                         urb, urb->status, urb->actual_length);
 336
 337         if (!test_bit(HCI_RUNNING, &hdev->flags))
 338                 return;
 339
 340         if (urb->status == 0) {
 341                 hdev->stat.byte_rx += urb->actual_length;
 342
 343                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 344                                                 urb->transfer_buffer,
 345                                                 urb->actual_length) < 0) {
 346                         BT_ERR("%s corrupted ACL packet", hdev->name);
 347                         hdev->stat.err_rx++;
 348                 }
 349         }
 350
 351         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 352                 return;
 353
 354         usb_anchor_urb(urb, &data->bulk_anchor);
 355         usb_mark_last_busy(data->udev);
 356
 357         err = usb_submit_urb(urb, GFP_ATOMIC);
 358         if (err < 0) {
 359                 /* -EPERM: urb is being killed;
 360                  * -ENODEV: device got disconnected */
 361                 if (err != -EPERM && err != -ENODEV)
 362                         BT_ERR("%s urb %p failed to resubmit (%d)",
 363                                                 hdev->name, urb, -err);
 364                 usb_unanchor_urb(urb);
 365         }
 366 }
 367
 368 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 369 {
 370         struct btusb_data *data = hdev->driver_data;
 371         struct urb *urb;
 372         unsigned char *buf;
 373         unsigned int pipe;
 374         int err, size = HCI_MAX_FRAME_SIZE;
 375
 376         BT_DBG("%s", hdev->name);
 377
 378         if (!data->bulk_rx_ep)
 379                 return -ENODEV;
 380
 381         urb = usb_alloc_urb(0, mem_flags);
 382         if (!urb)
 383                 return -ENOMEM;
 384
 385         buf = kmalloc(size, mem_flags);
 386         if (!buf) {
 387                 usb_free_urb(urb);
 388                 return -ENOMEM;
 389         }
 390
 391         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 392
 393         usb_fill_bulk_urb(urb, data->udev, pipe,
 394                                         buf, size, btusb_bulk_complete, hdev);
 395
 396         urb->transfer_flags |= URB_FREE_BUFFER;
 397
 398         usb_mark_last_busy(data->udev);
 399         usb_anchor_urb(urb, &data->bulk_anchor);
 400
 401         err = usb_submit_urb(urb, mem_flags);
 402         if (err < 0) {
 403                 BT_ERR("%s urb %p submission failed (%d)",
 404                                                 hdev->name, urb, -err);
 405                 usb_unanchor_urb(urb);
 406         }
 407
 408         usb_free_urb(urb);
 409
 410         return err;
 411 }
 412
 413 static void btusb_isoc_complete(struct urb *urb)
 414 {
 415         struct hci_dev *hdev = urb->context;
 416         struct btusb_data *data = hdev->driver_data;
 417         int i, err;
 418
 419         BT_DBG("%s urb %p status %d count %d", hdev->name,
 420                                         urb, urb->status, urb->actual_length);
 421
 422         if (!test_bit(HCI_RUNNING, &hdev->flags))
 423                 return;
 424
 425         if (urb->status == 0) {
 426                 for (i = 0; i < urb->number_of_packets; i++) {
 427                         unsigned int offset = urb->iso_frame_desc[i].offset;
 428                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 429
 430                         if (urb->iso_frame_desc[i].status)
 431                                 continue;
 432
 433                         hdev->stat.byte_rx += length;
 434
 435                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 436                                                 urb->transfer_buffer + offset,
 437                                                                 length) < 0) {
 438                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 439                                 hdev->stat.err_rx++;
 440                         }
 441                 }
 442         }
 443
 444         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 445                 return;
 446
 447         usb_anchor_urb(urb, &data->isoc_anchor);
 448
 449         err = usb_submit_urb(urb, GFP_ATOMIC);
 450         if (err < 0) {
 451                 /* -EPERM: urb is being killed;
 452                  * -ENODEV: device got disconnected */
 453                 if (err != -EPERM && err != -ENODEV)
 454                         BT_ERR("%s urb %p failed to resubmit (%d)",
 455                                                 hdev->name, urb, -err);
 456                 usb_unanchor_urb(urb);
 457         }
 458 }
 459
 460 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 461 {
 462         int i, offset = 0;
 463
 464         BT_DBG("len %d mtu %d", len, mtu);
 465
 466         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 467                                         i++, offset += mtu, len -= mtu) {
 468                 urb->iso_frame_desc[i].offset = offset;
 469                 urb->iso_frame_desc[i].length = mtu;
 470         }
 471
 472         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 473                 urb->iso_frame_desc[i].offset = offset;
 474                 urb->iso_frame_desc[i].length = len;
 475                 i++;
 476         }
 477
 478         urb->number_of_packets = i;
 479 }
 480
 481 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 482 {
 483         struct btusb_data *data = hdev->driver_data;
 484         struct urb *urb;
 485         unsigned char *buf;
 486         unsigned int pipe;
 487         int err, size;
 488
 489         BT_DBG("%s", hdev->name);
 490
 491         if (!data->isoc_rx_ep)
 492                 return -ENODEV;
 493
 494         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 495         if (!urb)
 496                 return -ENOMEM;
 497
 498         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 499                                                 BTUSB_MAX_ISOC_FRAMES;
 500
 501         buf = kmalloc(size, mem_flags);
 502         if (!buf) {
 503                 usb_free_urb(urb);
 504                 return -ENOMEM;
 505         }
 506
 507         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 508
 509         urb->dev      = data->udev;
 510         urb->pipe     = pipe;
 511         urb->context  = hdev;
 512         urb->complete = btusb_isoc_complete;
 513         urb->interval = data->isoc_rx_ep->bInterval;
 514
 515         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 516         urb->transfer_buffer = buf;
 517         urb->transfer_buffer_length = size;
 518
 519         __fill_isoc_descriptor(urb, size,
 520                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 521
 522         usb_anchor_urb(urb, &data->isoc_anchor);
 523
 524         err = usb_submit_urb(urb, mem_flags);
 525         if (err < 0) {
 526                 BT_ERR("%s urb %p submission failed (%d)",
 527                                                 hdev->name, urb, -err);
 528                 usb_unanchor_urb(urb);
 529         }
 530
 531         usb_free_urb(urb);
 532
 533         return err;
 534 }
 535
 536 static void btusb_tx_complete(struct urb *urb)
 537 {
 538         struct sk_buff *skb = urb->context;
 539         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 540         struct btusb_data *data = hdev->driver_data;
 541
 542         BT_DBG("%s urb %p status %d count %d", hdev->name,
 543                                         urb, urb->status, urb->actual_length);
 544
 545         if (!test_bit(HCI_RUNNING, &hdev->flags))
 546                 goto done;
 547
 548         if (!urb->status)
 549                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 550         else
 551                 hdev->stat.err_tx++;
 552
 553 done:
 554         spin_lock(&data->txlock);
 555         data->tx_in_flight--;
 556         spin_unlock(&data->txlock);
 557
 558         kfree(urb->setup_packet);
 559
 560         kfree_skb(skb);
 561 }
 562
 563 static void btusb_isoc_tx_complete(struct urb *urb)
 564 {
 565         struct sk_buff *skb = urb->context;
 566         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 567
 568         BT_DBG("%s urb %p status %d count %d", hdev->name,
 569                                         urb, urb->status, urb->actual_length);
 570
 571         if (!test_bit(HCI_RUNNING, &hdev->flags))
 572                 goto done;
 573
 574         if (!urb->status)
 575                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 576         else
 577                 hdev->stat.err_tx++;
 578
 579 done:
 580         kfree(urb->setup_packet);
 581
 582         kfree_skb(skb);
 583 }
 584
 585 static int btusb_open(struct hci_dev *hdev)
 586 {
 587         struct btusb_data *data = hdev->driver_data;
 588         int err;
 589
 590         BT_DBG("%s", hdev->name);
 591
 592         err = usb_autopm_get_interface(data->intf);
 593         if (err < 0)
 594                 return err;
 595
 596         data->intf->needs_remote_wakeup = 1;
 597
 598         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 599                 goto done;
 600
 601         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 602                 goto done;
 603
 604         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 605         if (err < 0)
 606                 goto failed;
 607
 608         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 609         if (err < 0) {
 610                 usb_kill_anchored_urbs(&data->intr_anchor);
 611                 goto failed;
 612         }
 613
 614         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 615         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 616
 617 done:
 618         usb_autopm_put_interface(data->intf);
 619         return 0;
 620
 621 failed:
 622         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 623         clear_bit(HCI_RUNNING, &hdev->flags);
 624         usb_autopm_put_interface(data->intf);
 625         return err;
 626 }
 627
 628 static void btusb_stop_traffic(struct btusb_data *data)
 629 {
 630         usb_kill_anchored_urbs(&data->intr_anchor);
 631         usb_kill_anchored_urbs(&data->bulk_anchor);
 632         usb_kill_anchored_urbs(&data->isoc_anchor);
 633 }
 634
 635 static int btusb_close(struct hci_dev *hdev)
 636 {
 637         struct btusb_data *data = hdev->driver_data;
 638         int err;
 639
 640         BT_DBG("%s", hdev->name);
 641
 642         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 643                 return 0;
 644
 645         cancel_work_sync(&data->work);
 646         cancel_work_sync(&data->waker);
 647
 648         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 649         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 650         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 651
 652         btusb_stop_traffic(data);
 653         err = usb_autopm_get_interface(data->intf);
 654         if (err < 0)
 655                 goto failed;
 656
 657         data->intf->needs_remote_wakeup = 0;
 658         usb_autopm_put_interface(data->intf);
 659
 660 failed:
 661         usb_scuttle_anchored_urbs(&data->deferred);
 662         return 0;
 663 }
 664
 665 static int btusb_flush(struct hci_dev *hdev)
 666 {
 667         struct btusb_data *data = hdev->driver_data;
 668
 669         BT_DBG("%s", hdev->name);
 670
 671         usb_kill_anchored_urbs(&data->tx_anchor);
 672
 673         return 0;
 674 }
 675
 676 static int btusb_send_frame(struct sk_buff *skb)
 677 {
 678         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 679         struct btusb_data *data = hdev->driver_data;
 680         struct usb_ctrlrequest *dr;
 681         struct urb *urb;
 682         unsigned int pipe;
 683         int err;
 684
 685         BT_DBG("%s", hdev->name);
 686
 687         if (!test_bit(HCI_RUNNING, &hdev->flags))
 688                 return -EBUSY;
 689
 690         switch (bt_cb(skb)->pkt_type) {
 691         case HCI_COMMAND_PKT:
 692                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 693                 if (!urb)
 694                         return -ENOMEM;
 695
 696                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 697                 if (!dr) {
 698                         usb_free_urb(urb);
 699                         return -ENOMEM;
 700                 }
 701
 702                 dr->bRequestType = data->cmdreq_type;
 703                 dr->bRequest     = 0;
 704                 dr->wIndex       = 0;
 705                 dr->wValue       = 0;
 706                 dr->wLength      = __cpu_to_le16(skb->len);
 707
 708                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 709
 710                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 711                                 skb->data, skb->len, btusb_tx_complete, skb);
 712
 713                 hdev->stat.cmd_tx++;
 714                 break;
 715
 716         case HCI_ACLDATA_PKT:
 717                 if (!data->bulk_tx_ep)
 718                         return -ENODEV;
 719
 720                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 721                 if (!urb)
 722                         return -ENOMEM;
 723
 724                 pipe = usb_sndbulkpipe(data->udev,
 725                                         data->bulk_tx_ep->bEndpointAddress);
 726
 727                 usb_fill_bulk_urb(urb, data->udev, pipe,
 728                                 skb->data, skb->len, btusb_tx_complete, skb);
 729
 730                 hdev->stat.acl_tx++;
 731                 break;
 732
 733         case HCI_SCODATA_PKT:
 734                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 735                         return -ENODEV;
 736
 737                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 738                 if (!urb)
 739                         return -ENOMEM;
 740
 741                 pipe = usb_sndisocpipe(data->udev,
 742                                         data->isoc_tx_ep->bEndpointAddress);
 743
 744                 usb_fill_int_urb(urb, data->udev, pipe,
 745                                 skb->data, skb->len, btusb_isoc_tx_complete,
 746                                 skb, data->isoc_tx_ep->bInterval);
 747
 748                 urb->transfer_flags  = URB_ISO_ASAP;
 749
 750                 __fill_isoc_descriptor(urb, skb->len,
 751                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 752
 753                 hdev->stat.sco_tx++;
 754                 goto skip_waking;
 755
 756         default:
 757                 return -EILSEQ;
 758         }
 759
 760         err = inc_tx(data);
 761         if (err) {
 762                 usb_anchor_urb(urb, &data->deferred);
 763                 schedule_work(&data->waker);
 764                 err = 0;
 765                 goto done;
 766         }
 767
 768 skip_waking:
 769         usb_anchor_urb(urb, &data->tx_anchor);
 770
 771         err = usb_submit_urb(urb, GFP_ATOMIC);
 772         if (err < 0) {
 773                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 774                 kfree(urb->setup_packet);
 775                 usb_unanchor_urb(urb);
 776         } else {
 777                 usb_mark_last_busy(data->udev);
 778         }
 779
 780         usb_free_urb(urb);
 781
 782 done:
 783         return err;
 784 }
 785
 786 static void btusb_destruct(struct hci_dev *hdev)
 787 {
 788         struct btusb_data *data = hdev->driver_data;
 789
 790         BT_DBG("%s", hdev->name);
 791
 792         kfree(data);
 793 }
 794
 795 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 796 {
 797         struct btusb_data *data = hdev->driver_data;
 798
 799         BT_DBG("%s evt %d", hdev->name, evt);
 800
 801         if (hdev->conn_hash.sco_num != data->sco_num) {
 802                 data->sco_num = hdev->conn_hash.sco_num;
 803                 schedule_work(&data->work);
 804         }
 805 }
 806
 807 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 808 {
 809         struct btusb_data *data = hdev->driver_data;
 810         struct usb_interface *intf = data->isoc;
 811         struct usb_endpoint_descriptor *ep_desc;
 812         int i, err;
 813
 814         if (!data->isoc)
 815                 return -ENODEV;
 816
 817         err = usb_set_interface(data->udev, 1, altsetting);
 818         if (err < 0) {
 819                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 820                 return err;
 821         }
 822
 823         data->isoc_altsetting = altsetting;
 824
 825         data->isoc_tx_ep = NULL;
 826         data->isoc_rx_ep = NULL;
 827
 828         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 829                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 830
 831                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 832                         data->isoc_tx_ep = ep_desc;
 833                         continue;
 834                 }
 835
 836                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 837                         data->isoc_rx_ep = ep_desc;
 838                         continue;
 839                 }
 840         }
 841
 842         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 843                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 844                 return -ENODEV;
 845         }
 846
 847         return 0;
 848 }
 849
 850 static void btusb_work(struct work_struct *work)
 851 {
 852         struct btusb_data *data = container_of(work, struct btusb_data, work);
 853         struct hci_dev *hdev = data->hdev;
 854         int err;
 855
 856         if (hdev->conn_hash.sco_num > 0) {
 857                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 858                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 859                         if (err < 0) {
 860                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 861                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 862                                 return;
 863                         }
 864
 865                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 866                 }
 867                 if (data->isoc_altsetting != 2) {
 868                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 869                         usb_kill_anchored_urbs(&data->isoc_anchor);
 870
 871                         if (__set_isoc_interface(hdev, 2) < 0)
 872                                 return;
 873                 }
 874
 875                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 876                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 877                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 878                         else
 879                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 880                 }
 881         } else {
 882                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 883                 usb_kill_anchored_urbs(&data->isoc_anchor);
 884
 885                 __set_isoc_interface(hdev, 0);
 886                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 887                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 888         }
 889 }
 890
 891 static void btusb_waker(struct work_struct *work)
 892 {
 893         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 894         int err;
 895
 896         err = usb_autopm_get_interface(data->intf);
 897         if (err < 0)
 898                 return;
 899
 900         usb_autopm_put_interface(data->intf);
 901 }
 902
 903 static int btusb_probe(struct usb_interface *intf,
 904                                 const struct usb_device_id *id)
 905 {
 906         struct usb_endpoint_descriptor *ep_desc;
 907         struct btusb_data *data;
 908         struct hci_dev *hdev;
 909         int i, err;
 910
 911         BT_DBG("intf %p id %p", intf, id);
 912
 913         /* interface numbers are hardcoded in the spec */
 914         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 915                 return -ENODEV;
 916
 917         if (!id->driver_info) {
 918                 const struct usb_device_id *match;
 919                 match = usb_match_id(intf, blacklist_table);
 920                 if (match)
 921                         id = match;
 922         }
 923
 924         if (id->driver_info == BTUSB_IGNORE)
 925                 return -ENODEV;
 926
 927         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 928                 return -ENODEV;
 929
 930         if (ignore_csr && id->driver_info & BTUSB_CSR)
 931                 return -ENODEV;
 932
 933         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 934                 return -ENODEV;
 935
 936         if (id->driver_info & BTUSB_ATH3012) {
 937                 struct usb_device *udev = interface_to_usbdev(intf);
 938
 939                 /* Old firmware would otherwise let ath3k driver load
 940                  * patch and sysconfig files */
 941                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 942                         return -ENODEV;
 943         }
 944
 945         data = kzalloc(sizeof(*data), GFP_KERNEL);
 946         if (!data)
 947                 return -ENOMEM;
 948
 949         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 950                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 951
 952                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 953                         data->intr_ep = ep_desc;
 954                         continue;
 955                 }
 956
 957                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 958                         data->bulk_tx_ep = ep_desc;
 959                         continue;
 960                 }
 961
 962                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 963                         data->bulk_rx_ep = ep_desc;
 964                         continue;
 965                 }
 966         }
 967
 968         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 969                 kfree(data);
 970                 return -ENODEV;
 971         }
 972
 973         data->cmdreq_type = USB_TYPE_CLASS;
 974
 975         data->udev = interface_to_usbdev(intf);
 976         data->intf = intf;
 977
 978         spin_lock_init(&data->lock);
 979
 980         INIT_WORK(&data->work, btusb_work);
 981         INIT_WORK(&data->waker, btusb_waker);
 982         spin_lock_init(&data->txlock);
 983
 984         init_usb_anchor(&data->tx_anchor);
 985         init_usb_anchor(&data->intr_anchor);
 986         init_usb_anchor(&data->bulk_anchor);
 987         init_usb_anchor(&data->isoc_anchor);
 988         init_usb_anchor(&data->deferred);
 989
 990         hdev = hci_alloc_dev();
 991         if (!hdev) {
 992                 kfree(data);
 993                 return -ENOMEM;
 994         }
 995
 996         hdev->bus = HCI_USB;
 997         hdev->driver_data = data;
 998
 999         data->hdev = hdev;
1000
1001         SET_HCIDEV_DEV(hdev, &intf->dev);
1002
1003         hdev->open     = btusb_open;
1004         hdev->close    = btusb_close;
1005         hdev->flush    = btusb_flush;
1006         hdev->send     = btusb_send_frame;
1007         hdev->destruct = btusb_destruct;
1008         hdev->notify   = btusb_notify;
1009
1010         hdev->owner = THIS_MODULE;
1011
1012         /* Interface numbers are hardcoded in the specification */
1013         data->isoc = usb_ifnum_to_if(data->udev, 1);
1014
1015         if (!reset)
1016                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1017
1018         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1019                 if (!disable_scofix)
1020                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1021         }
1022
1023         if (id->driver_info & BTUSB_BROKEN_ISOC)
1024                 data->isoc = NULL;
1025
1026         if (id->driver_info & BTUSB_DIGIANSWER) {
1027                 data->cmdreq_type = USB_TYPE_VENDOR;
1028                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1029         }
1030
1031         if (id->driver_info & BTUSB_CSR) {
1032                 struct usb_device *udev = data->udev;
1033
1034                 /* Old firmware would otherwise execute USB reset */
1035                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1036                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1037         }
1038
1039         if (id->driver_info & BTUSB_SNIFFER) {
1040                 struct usb_device *udev = data->udev;
1041
1042                 /* New sniffer firmware has crippled HCI interface */
1043                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1044                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1045
1046                 data->isoc = NULL;
1047         }
1048
1049         if (id->driver_info & BTUSB_BCM92035) {
1050                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1051                 struct sk_buff *skb;
1052
1053                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1054                 if (skb) {
1055                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1056                         skb_queue_tail(&hdev->driver_init, skb);
1057                 }
1058         }
1059
1060         if (data->isoc) {
1061                 err = usb_driver_claim_interface(&btusb_driver,
1062                                                         data->isoc, data);
1063                 if (err < 0) {
1064                         hci_free_dev(hdev);
1065                         kfree(data);
1066                         return err;
1067                 }
1068         }
1069
1070         err = hci_register_dev(hdev);
1071         if (err < 0) {
1072                 hci_free_dev(hdev);
1073                 kfree(data);
1074                 return err;
1075         }
1076
1077         usb_set_intfdata(intf, data);
1078
1079         return 0;
1080 }
1081
1082 static void btusb_disconnect(struct usb_interface *intf)
1083 {
1084         struct btusb_data *data = usb_get_intfdata(intf);
1085         struct hci_dev *hdev;
1086
1087         BT_DBG("intf %p", intf);
1088
1089         if (!data)
1090                 return;
1091
1092         hdev = data->hdev;
1093
1094         __hci_dev_hold(hdev);
1095
1096         usb_set_intfdata(data->intf, NULL);
1097
1098         if (data->isoc)
1099                 usb_set_intfdata(data->isoc, NULL);
1100
1101         hci_unregister_dev(hdev);
1102
1103         if (intf == data->isoc)
1104                 usb_driver_release_interface(&btusb_driver, data->intf);
1105         else if (data->isoc)
1106                 usb_driver_release_interface(&btusb_driver, data->isoc);
1107
1108         __hci_dev_put(hdev);
1109
1110         hci_free_dev(hdev);
1111 }
1112
1113 #ifdef CONFIG_PM
1114 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1115 {
1116         struct btusb_data *data = usb_get_intfdata(intf);
1117
1118         BT_DBG("intf %p", intf);
1119
1120         if (data->suspend_count++)
1121                 return 0;
1122
1123         spin_lock_irq(&data->txlock);
1124         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1125                 set_bit(BTUSB_SUSPENDING, &data->flags);
1126                 spin_unlock_irq(&data->txlock);
1127         } else {
1128                 spin_unlock_irq(&data->txlock);
1129                 data->suspend_count--;
1130                 return -EBUSY;
1131         }
1132
1133         cancel_work_sync(&data->work);
1134
1135         btusb_stop_traffic(data);
1136         usb_kill_anchored_urbs(&data->tx_anchor);
1137
1138         return 0;
1139 }
1140
1141 static void play_deferred(struct btusb_data *data)
1142 {
1143         struct urb *urb;
1144         int err;
1145
1146         while ((urb = usb_get_from_anchor(&data->deferred))) {
1147                 err = usb_submit_urb(urb, GFP_ATOMIC);
1148                 if (err < 0)
1149                         break;
1150
1151                 data->tx_in_flight++;
1152         }
1153         usb_scuttle_anchored_urbs(&data->deferred);
1154 }
1155
1156 static int btusb_resume(struct usb_interface *intf)
1157 {
1158         struct btusb_data *data = usb_get_intfdata(intf);
1159         struct hci_dev *hdev = data->hdev;
1160         int err = 0;
1161
1162         BT_DBG("intf %p", intf);
1163
1164         if (--data->suspend_count)
1165                 return 0;
1166
1167         if (!test_bit(HCI_RUNNING, &hdev->flags))
1168                 goto done;
1169
1170         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1171                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1172                 if (err < 0) {
1173                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1174                         goto failed;
1175                 }
1176         }
1177
1178         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1179                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1180                 if (err < 0) {
1181                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1182                         goto failed;
1183                 }
1184
1185                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1186         }
1187
1188         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1189                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1190                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1191                 else
1192                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1193         }
1194
1195         spin_lock_irq(&data->txlock);
1196         play_deferred(data);
1197         clear_bit(BTUSB_SUSPENDING, &data->flags);
1198         spin_unlock_irq(&data->txlock);
1199         schedule_work(&data->work);
1200
1201         return 0;
1202
1203 failed:
1204         usb_scuttle_anchored_urbs(&data->deferred);
1205 done:
1206         spin_lock_irq(&data->txlock);
1207         clear_bit(BTUSB_SUSPENDING, &data->flags);
1208         spin_unlock_irq(&data->txlock);
1209
1210         return err;
1211 }
1212 #endif
1213
1214 static struct usb_driver btusb_driver = {
1215         .name           = "btusb",
1216         .probe          = btusb_probe,
1217         .disconnect     = btusb_disconnect,
1218 #ifdef CONFIG_PM
1219         .suspend        = btusb_suspend,
1220         .resume         = btusb_resume,
1221 #endif
1222         .id_table       = btusb_table,
1223         .supports_autosuspend = 1,
1224 };
1225
1226 static int __init btusb_init(void)
1227 {
1228         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1229
1230         return usb_register(&btusb_driver);
1231 }
1232
1233 static void __exit btusb_exit(void)
1234 {
1235         usb_deregister(&btusb_driver);
1236 }
1237
1238 module_init(btusb_init);
1239 module_exit(btusb_exit);
1240
1241 module_param(ignore_dga, bool, 0644);
1242 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1243
1244 module_param(ignore_csr, bool, 0644);
1245 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1246
1247 module_param(ignore_sniffer, bool, 0644);
1248 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1249
1250 module_param(disable_scofix, bool, 0644);
1251 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1252
1253 module_param(force_scofix, bool, 0644);
1254 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1255
1256 module_param(reset, bool, 0644);
1257 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1258
1259 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
1260 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1261 MODULE_VERSION(VERSION);
1262 MODULE_LICENSE("GPL");