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         /* 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         { }     /* Terminating entry */
 112 };
 113
 114 MODULE_DEVICE_TABLE(usb, btusb_table);
 115
 116 static struct usb_device_id blacklist_table[] = {
 117         /* CSR BlueCore devices */
 118         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 119
 120         /* Broadcom BCM2033 without firmware */
 121         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 122
 123         /* Atheros 3011 with sflash firmware */
 124         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 125         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 126         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 127         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 128
 129         /* Atheros AR9285 Malbec with sflash firmware */
 130         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 131
 132         /* Atheros 3012 with sflash firmware */
 133         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 138
 139         /* Atheros AR5BBU12 with sflash firmware */
 140         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 141
 142         /* Broadcom BCM2035 */
 143         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 144         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 145         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 146
 147         /* Broadcom BCM2045 */
 148         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 149         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 150
 151         /* IBM/Lenovo ThinkPad with Broadcom chip */
 152         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 153         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 154
 155         /* HP laptop with Broadcom chip */
 156         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 157
 158         /* Dell laptop with Broadcom chip */
 159         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 160
 161         /* Dell Wireless 370 and 410 devices */
 162         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 163         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 164
 165         /* Belkin F8T012 and F8T013 devices */
 166         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 167         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 168
 169         /* Asus WL-BTD202 device */
 170         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 171
 172         /* Kensington Bluetooth USB adapter */
 173         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 174
 175         /* RTX Telecom based adapters with buggy SCO support */
 176         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 177         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 178
 179         /* CONWISE Technology based adapters with buggy SCO support */
 180         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 181
 182         /* Digianswer devices */
 183         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 184         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 185
 186         /* CSR BlueCore Bluetooth Sniffer */
 187         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 188
 189         /* Frontline ComProbe Bluetooth Sniffer */
 190         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 191
 192         { }     /* Terminating entry */
 193 };
 194
 195 #define BTUSB_MAX_ISOC_FRAMES   10
 196
 197 #define BTUSB_INTR_RUNNING      0
 198 #define BTUSB_BULK_RUNNING      1
 199 #define BTUSB_ISOC_RUNNING      2
 200 #define BTUSB_SUSPENDING        3
 201 #define BTUSB_DID_ISO_RESUME    4
 202
 203 struct btusb_data {
 204         struct hci_dev       *hdev;
 205         struct usb_device    *udev;
 206         struct usb_interface *intf;
 207         struct usb_interface *isoc;
 208
 209         spinlock_t lock;
 210
 211         unsigned long flags;
 212
 213         struct work_struct work;
 214         struct work_struct waker;
 215
 216         struct usb_anchor tx_anchor;
 217         struct usb_anchor intr_anchor;
 218         struct usb_anchor bulk_anchor;
 219         struct usb_anchor isoc_anchor;
 220         struct usb_anchor deferred;
 221         int tx_in_flight;
 222         spinlock_t txlock;
 223
 224         struct usb_endpoint_descriptor *intr_ep;
 225         struct usb_endpoint_descriptor *bulk_tx_ep;
 226         struct usb_endpoint_descriptor *bulk_rx_ep;
 227         struct usb_endpoint_descriptor *isoc_tx_ep;
 228         struct usb_endpoint_descriptor *isoc_rx_ep;
 229
 230         __u8 cmdreq_type;
 231
 232         unsigned int sco_num;
 233         int isoc_altsetting;
 234         int suspend_count;
 235 };
 236
 237 static int inc_tx(struct btusb_data *data)
 238 {
 239         unsigned long flags;
 240         int rv;
 241
 242         spin_lock_irqsave(&data->txlock, flags);
 243         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 244         if (!rv)
 245                 data->tx_in_flight++;
 246         spin_unlock_irqrestore(&data->txlock, flags);
 247
 248         return rv;
 249 }
 250
 251 static void btusb_intr_complete(struct urb *urb)
 252 {
 253         struct hci_dev *hdev = urb->context;
 254         struct btusb_data *data = hdev->driver_data;
 255         int err;
 256
 257         BT_DBG("%s urb %p status %d count %d", hdev->name,
 258                                         urb, urb->status, urb->actual_length);
 259
 260         if (!test_bit(HCI_RUNNING, &hdev->flags))
 261                 return;
 262
 263         if (urb->status == 0) {
 264                 hdev->stat.byte_rx += urb->actual_length;
 265
 266                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 267                                                 urb->transfer_buffer,
 268                                                 urb->actual_length) < 0) {
 269                         BT_ERR("%s corrupted event packet", hdev->name);
 270                         hdev->stat.err_rx++;
 271                 }
 272         }
 273
 274         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 275                 return;
 276
 277         usb_mark_last_busy(data->udev);
 278         usb_anchor_urb(urb, &data->intr_anchor);
 279
 280         err = usb_submit_urb(urb, GFP_ATOMIC);
 281         if (err < 0) {
 282                 /* -EPERM: urb is being killed;
 283                  * -ENODEV: device got disconnected */
 284                 if (err != -EPERM && err != -ENODEV)
 285                         BT_ERR("%s urb %p failed to resubmit (%d)",
 286                                                 hdev->name, urb, -err);
 287                 usb_unanchor_urb(urb);
 288         }
 289 }
 290
 291 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 292 {
 293         struct btusb_data *data = hdev->driver_data;
 294         struct urb *urb;
 295         unsigned char *buf;
 296         unsigned int pipe;
 297         int err, size;
 298
 299         BT_DBG("%s", hdev->name);
 300
 301         if (!data->intr_ep)
 302                 return -ENODEV;
 303
 304         urb = usb_alloc_urb(0, mem_flags);
 305         if (!urb)
 306                 return -ENOMEM;
 307
 308         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 309
 310         buf = kmalloc(size, mem_flags);
 311         if (!buf) {
 312                 usb_free_urb(urb);
 313                 return -ENOMEM;
 314         }
 315
 316         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 317
 318         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 319                                                 btusb_intr_complete, hdev,
 320                                                 data->intr_ep->bInterval);
 321
 322         urb->transfer_flags |= URB_FREE_BUFFER;
 323
 324         usb_anchor_urb(urb, &data->intr_anchor);
 325
 326         err = usb_submit_urb(urb, mem_flags);
 327         if (err < 0) {
 328                 BT_ERR("%s urb %p submission failed (%d)",
 329                                                 hdev->name, urb, -err);
 330                 usb_unanchor_urb(urb);
 331         }
 332
 333         usb_free_urb(urb);
 334
 335         return err;
 336 }
 337
 338 static void btusb_bulk_complete(struct urb *urb)
 339 {
 340         struct hci_dev *hdev = urb->context;
 341         struct btusb_data *data = hdev->driver_data;
 342         int err;
 343
 344         BT_DBG("%s urb %p status %d count %d", hdev->name,
 345                                         urb, urb->status, urb->actual_length);
 346
 347         if (!test_bit(HCI_RUNNING, &hdev->flags))
 348                 return;
 349
 350         if (urb->status == 0) {
 351                 hdev->stat.byte_rx += urb->actual_length;
 352
 353                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 354                                                 urb->transfer_buffer,
 355                                                 urb->actual_length) < 0) {
 356                         BT_ERR("%s corrupted ACL packet", hdev->name);
 357                         hdev->stat.err_rx++;
 358                 }
 359         }
 360
 361         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 362                 return;
 363
 364         usb_anchor_urb(urb, &data->bulk_anchor);
 365         usb_mark_last_busy(data->udev);
 366
 367         err = usb_submit_urb(urb, GFP_ATOMIC);
 368         if (err < 0) {
 369                 /* -EPERM: urb is being killed;
 370                  * -ENODEV: device got disconnected */
 371                 if (err != -EPERM && err != -ENODEV)
 372                         BT_ERR("%s urb %p failed to resubmit (%d)",
 373                                                 hdev->name, urb, -err);
 374                 usb_unanchor_urb(urb);
 375         }
 376 }
 377
 378 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 379 {
 380         struct btusb_data *data = hdev->driver_data;
 381         struct urb *urb;
 382         unsigned char *buf;
 383         unsigned int pipe;
 384         int err, size = HCI_MAX_FRAME_SIZE;
 385
 386         BT_DBG("%s", hdev->name);
 387
 388         if (!data->bulk_rx_ep)
 389                 return -ENODEV;
 390
 391         urb = usb_alloc_urb(0, mem_flags);
 392         if (!urb)
 393                 return -ENOMEM;
 394
 395         buf = kmalloc(size, mem_flags);
 396         if (!buf) {
 397                 usb_free_urb(urb);
 398                 return -ENOMEM;
 399         }
 400
 401         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 402
 403         usb_fill_bulk_urb(urb, data->udev, pipe,
 404                                         buf, size, btusb_bulk_complete, hdev);
 405
 406         urb->transfer_flags |= URB_FREE_BUFFER;
 407
 408         usb_mark_last_busy(data->udev);
 409         usb_anchor_urb(urb, &data->bulk_anchor);
 410
 411         err = usb_submit_urb(urb, mem_flags);
 412         if (err < 0) {
 413                 BT_ERR("%s urb %p submission failed (%d)",
 414                                                 hdev->name, urb, -err);
 415                 usb_unanchor_urb(urb);
 416         }
 417
 418         usb_free_urb(urb);
 419
 420         return err;
 421 }
 422
 423 static void btusb_isoc_complete(struct urb *urb)
 424 {
 425         struct hci_dev *hdev = urb->context;
 426         struct btusb_data *data = hdev->driver_data;
 427         int i, err;
 428
 429         BT_DBG("%s urb %p status %d count %d", hdev->name,
 430                                         urb, urb->status, urb->actual_length);
 431
 432         if (!test_bit(HCI_RUNNING, &hdev->flags))
 433                 return;
 434
 435         if (urb->status == 0) {
 436                 for (i = 0; i < urb->number_of_packets; i++) {
 437                         unsigned int offset = urb->iso_frame_desc[i].offset;
 438                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 439
 440                         if (urb->iso_frame_desc[i].status)
 441                                 continue;
 442
 443                         hdev->stat.byte_rx += length;
 444
 445                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 446                                                 urb->transfer_buffer + offset,
 447                                                                 length) < 0) {
 448                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 449                                 hdev->stat.err_rx++;
 450                         }
 451                 }
 452         }
 453
 454         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 455                 return;
 456
 457         usb_anchor_urb(urb, &data->isoc_anchor);
 458
 459         err = usb_submit_urb(urb, GFP_ATOMIC);
 460         if (err < 0) {
 461                 /* -EPERM: urb is being killed;
 462                  * -ENODEV: device got disconnected */
 463                 if (err != -EPERM && err != -ENODEV)
 464                         BT_ERR("%s urb %p failed to resubmit (%d)",
 465                                                 hdev->name, urb, -err);
 466                 usb_unanchor_urb(urb);
 467         }
 468 }
 469
 470 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 471 {
 472         int i, offset = 0;
 473
 474         BT_DBG("len %d mtu %d", len, mtu);
 475
 476         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 477                                         i++, offset += mtu, len -= mtu) {
 478                 urb->iso_frame_desc[i].offset = offset;
 479                 urb->iso_frame_desc[i].length = mtu;
 480         }
 481
 482         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 483                 urb->iso_frame_desc[i].offset = offset;
 484                 urb->iso_frame_desc[i].length = len;
 485                 i++;
 486         }
 487
 488         urb->number_of_packets = i;
 489 }
 490
 491 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 492 {
 493         struct btusb_data *data = hdev->driver_data;
 494         struct urb *urb;
 495         unsigned char *buf;
 496         unsigned int pipe;
 497         int err, size;
 498
 499         BT_DBG("%s", hdev->name);
 500
 501         if (!data->isoc_rx_ep)
 502                 return -ENODEV;
 503
 504         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 505         if (!urb)
 506                 return -ENOMEM;
 507
 508         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 509                                                 BTUSB_MAX_ISOC_FRAMES;
 510
 511         buf = kmalloc(size, mem_flags);
 512         if (!buf) {
 513                 usb_free_urb(urb);
 514                 return -ENOMEM;
 515         }
 516
 517         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 518
 519         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 520                                 hdev, data->isoc_rx_ep->bInterval);
 521
 522         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 523
 524         __fill_isoc_descriptor(urb, size,
 525                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 526
 527         usb_anchor_urb(urb, &data->isoc_anchor);
 528
 529         err = usb_submit_urb(urb, mem_flags);
 530         if (err < 0) {
 531                 BT_ERR("%s urb %p submission failed (%d)",
 532                                                 hdev->name, urb, -err);
 533                 usb_unanchor_urb(urb);
 534         }
 535
 536         usb_free_urb(urb);
 537
 538         return err;
 539 }
 540
 541 static void btusb_tx_complete(struct urb *urb)
 542 {
 543         struct sk_buff *skb = urb->context;
 544         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 545         struct btusb_data *data = hdev->driver_data;
 546
 547         BT_DBG("%s urb %p status %d count %d", hdev->name,
 548                                         urb, urb->status, urb->actual_length);
 549
 550         if (!test_bit(HCI_RUNNING, &hdev->flags))
 551                 goto done;
 552
 553         if (!urb->status)
 554                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 555         else
 556                 hdev->stat.err_tx++;
 557
 558 done:
 559         spin_lock(&data->txlock);
 560         data->tx_in_flight--;
 561         spin_unlock(&data->txlock);
 562
 563         kfree(urb->setup_packet);
 564
 565         kfree_skb(skb);
 566 }
 567
 568 static void btusb_isoc_tx_complete(struct urb *urb)
 569 {
 570         struct sk_buff *skb = urb->context;
 571         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 572
 573         BT_DBG("%s urb %p status %d count %d", hdev->name,
 574                                         urb, urb->status, urb->actual_length);
 575
 576         if (!test_bit(HCI_RUNNING, &hdev->flags))
 577                 goto done;
 578
 579         if (!urb->status)
 580                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 581         else
 582                 hdev->stat.err_tx++;
 583
 584 done:
 585         kfree(urb->setup_packet);
 586
 587         kfree_skb(skb);
 588 }
 589
 590 static int btusb_open(struct hci_dev *hdev)
 591 {
 592         struct btusb_data *data = hdev->driver_data;
 593         int err;
 594
 595         BT_DBG("%s", hdev->name);
 596
 597         err = usb_autopm_get_interface(data->intf);
 598         if (err < 0)
 599                 return err;
 600
 601         data->intf->needs_remote_wakeup = 1;
 602
 603         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 604                 goto done;
 605
 606         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 607                 goto done;
 608
 609         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 610         if (err < 0)
 611                 goto failed;
 612
 613         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 614         if (err < 0) {
 615                 usb_kill_anchored_urbs(&data->intr_anchor);
 616                 goto failed;
 617         }
 618
 619         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 620         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 621
 622 done:
 623         usb_autopm_put_interface(data->intf);
 624         return 0;
 625
 626 failed:
 627         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 628         clear_bit(HCI_RUNNING, &hdev->flags);
 629         usb_autopm_put_interface(data->intf);
 630         return err;
 631 }
 632
 633 static void btusb_stop_traffic(struct btusb_data *data)
 634 {
 635         usb_kill_anchored_urbs(&data->intr_anchor);
 636         usb_kill_anchored_urbs(&data->bulk_anchor);
 637         usb_kill_anchored_urbs(&data->isoc_anchor);
 638 }
 639
 640 static int btusb_close(struct hci_dev *hdev)
 641 {
 642         struct btusb_data *data = hdev->driver_data;
 643         int err;
 644
 645         BT_DBG("%s", hdev->name);
 646
 647         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 648                 return 0;
 649
 650         cancel_work_sync(&data->work);
 651         cancel_work_sync(&data->waker);
 652
 653         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 654         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 655         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 656
 657         btusb_stop_traffic(data);
 658         err = usb_autopm_get_interface(data->intf);
 659         if (err < 0)
 660                 goto failed;
 661
 662         data->intf->needs_remote_wakeup = 0;
 663         usb_autopm_put_interface(data->intf);
 664
 665 failed:
 666         usb_scuttle_anchored_urbs(&data->deferred);
 667         return 0;
 668 }
 669
 670 static int btusb_flush(struct hci_dev *hdev)
 671 {
 672         struct btusb_data *data = hdev->driver_data;
 673
 674         BT_DBG("%s", hdev->name);
 675
 676         usb_kill_anchored_urbs(&data->tx_anchor);
 677
 678         return 0;
 679 }
 680
 681 static int btusb_send_frame(struct sk_buff *skb)
 682 {
 683         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 684         struct btusb_data *data = hdev->driver_data;
 685         struct usb_ctrlrequest *dr;
 686         struct urb *urb;
 687         unsigned int pipe;
 688         int err;
 689
 690         BT_DBG("%s", hdev->name);
 691
 692         if (!test_bit(HCI_RUNNING, &hdev->flags))
 693                 return -EBUSY;
 694
 695         switch (bt_cb(skb)->pkt_type) {
 696         case HCI_COMMAND_PKT:
 697                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 698                 if (!urb)
 699                         return -ENOMEM;
 700
 701                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 702                 if (!dr) {
 703                         usb_free_urb(urb);
 704                         return -ENOMEM;
 705                 }
 706
 707                 dr->bRequestType = data->cmdreq_type;
 708                 dr->bRequest     = 0;
 709                 dr->wIndex       = 0;
 710                 dr->wValue       = 0;
 711                 dr->wLength      = __cpu_to_le16(skb->len);
 712
 713                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 714
 715                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 716                                 skb->data, skb->len, btusb_tx_complete, skb);
 717
 718                 hdev->stat.cmd_tx++;
 719                 break;
 720
 721         case HCI_ACLDATA_PKT:
 722                 if (!data->bulk_tx_ep)
 723                         return -ENODEV;
 724
 725                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 726                 if (!urb)
 727                         return -ENOMEM;
 728
 729                 pipe = usb_sndbulkpipe(data->udev,
 730                                         data->bulk_tx_ep->bEndpointAddress);
 731
 732                 usb_fill_bulk_urb(urb, data->udev, pipe,
 733                                 skb->data, skb->len, btusb_tx_complete, skb);
 734
 735                 hdev->stat.acl_tx++;
 736                 break;
 737
 738         case HCI_SCODATA_PKT:
 739                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 740                         return -ENODEV;
 741
 742                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 743                 if (!urb)
 744                         return -ENOMEM;
 745
 746                 pipe = usb_sndisocpipe(data->udev,
 747                                         data->isoc_tx_ep->bEndpointAddress);
 748
 749                 usb_fill_int_urb(urb, data->udev, pipe,
 750                                 skb->data, skb->len, btusb_isoc_tx_complete,
 751                                 skb, data->isoc_tx_ep->bInterval);
 752
 753                 urb->transfer_flags  = URB_ISO_ASAP;
 754
 755                 __fill_isoc_descriptor(urb, skb->len,
 756                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 757
 758                 hdev->stat.sco_tx++;
 759                 goto skip_waking;
 760
 761         default:
 762                 return -EILSEQ;
 763         }
 764
 765         err = inc_tx(data);
 766         if (err) {
 767                 usb_anchor_urb(urb, &data->deferred);
 768                 schedule_work(&data->waker);
 769                 err = 0;
 770                 goto done;
 771         }
 772
 773 skip_waking:
 774         usb_anchor_urb(urb, &data->tx_anchor);
 775
 776         err = usb_submit_urb(urb, GFP_ATOMIC);
 777         if (err < 0) {
 778                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 779                 kfree(urb->setup_packet);
 780                 usb_unanchor_urb(urb);
 781         } else {
 782                 usb_mark_last_busy(data->udev);
 783         }
 784
 785 done:
 786         usb_free_urb(urb);
 787         return err;
 788 }
 789
 790 static void btusb_destruct(struct hci_dev *hdev)
 791 {
 792         struct btusb_data *data = hdev->driver_data;
 793
 794         BT_DBG("%s", hdev->name);
 795
 796         kfree(data);
 797 }
 798
 799 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 800 {
 801         struct btusb_data *data = hdev->driver_data;
 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 = hdev->driver_data;
 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         hdev->driver_data = 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->destruct = btusb_destruct;
1012         hdev->notify   = btusb_notify;
1013
1014         hdev->owner = THIS_MODULE;
1015
1016         /* Interface numbers are hardcoded in the specification */
1017         data->isoc = usb_ifnum_to_if(data->udev, 1);
1018
1019         if (!reset)
1020                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1021
1022         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1023                 if (!disable_scofix)
1024                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1025         }
1026
1027         if (id->driver_info & BTUSB_BROKEN_ISOC)
1028                 data->isoc = NULL;
1029
1030         if (id->driver_info & BTUSB_DIGIANSWER) {
1031                 data->cmdreq_type = USB_TYPE_VENDOR;
1032                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1033         }
1034
1035         if (id->driver_info & BTUSB_CSR) {
1036                 struct usb_device *udev = data->udev;
1037
1038                 /* Old firmware would otherwise execute USB reset */
1039                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1040                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1041         }
1042
1043         if (id->driver_info & BTUSB_SNIFFER) {
1044                 struct usb_device *udev = data->udev;
1045
1046                 /* New sniffer firmware has crippled HCI interface */
1047                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1048                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1049
1050                 data->isoc = NULL;
1051         }
1052
1053         if (id->driver_info & BTUSB_BCM92035) {
1054                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1055                 struct sk_buff *skb;
1056
1057                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1058                 if (skb) {
1059                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1060                         skb_queue_tail(&hdev->driver_init, skb);
1061                 }
1062         }
1063
1064         if (data->isoc) {
1065                 err = usb_driver_claim_interface(&btusb_driver,
1066                                                         data->isoc, data);
1067                 if (err < 0) {
1068                         hci_free_dev(hdev);
1069                         kfree(data);
1070                         return err;
1071                 }
1072         }
1073
1074         err = hci_register_dev(hdev);
1075         if (err < 0) {
1076                 hci_free_dev(hdev);
1077                 kfree(data);
1078                 return err;
1079         }
1080
1081         usb_set_intfdata(intf, data);
1082
1083         return 0;
1084 }
1085
1086 static void btusb_disconnect(struct usb_interface *intf)
1087 {
1088         struct btusb_data *data = usb_get_intfdata(intf);
1089         struct hci_dev *hdev;
1090
1091         BT_DBG("intf %p", intf);
1092
1093         if (!data)
1094                 return;
1095
1096         hdev = data->hdev;
1097
1098         __hci_dev_hold(hdev);
1099
1100         usb_set_intfdata(data->intf, NULL);
1101
1102         if (data->isoc)
1103                 usb_set_intfdata(data->isoc, NULL);
1104
1105         hci_unregister_dev(hdev);
1106
1107         if (intf == data->isoc)
1108                 usb_driver_release_interface(&btusb_driver, data->intf);
1109         else if (data->isoc)
1110                 usb_driver_release_interface(&btusb_driver, data->isoc);
1111
1112         __hci_dev_put(hdev);
1113
1114         hci_free_dev(hdev);
1115 }
1116
1117 #ifdef CONFIG_PM
1118 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1119 {
1120         struct btusb_data *data = usb_get_intfdata(intf);
1121
1122         BT_DBG("intf %p", intf);
1123
1124         if (data->suspend_count++)
1125                 return 0;
1126
1127         spin_lock_irq(&data->txlock);
1128         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1129                 set_bit(BTUSB_SUSPENDING, &data->flags);
1130                 spin_unlock_irq(&data->txlock);
1131         } else {
1132                 spin_unlock_irq(&data->txlock);
1133                 data->suspend_count--;
1134                 return -EBUSY;
1135         }
1136
1137         cancel_work_sync(&data->work);
1138
1139         btusb_stop_traffic(data);
1140         usb_kill_anchored_urbs(&data->tx_anchor);
1141
1142         return 0;
1143 }
1144
1145 static void play_deferred(struct btusb_data *data)
1146 {
1147         struct urb *urb;
1148         int err;
1149
1150         while ((urb = usb_get_from_anchor(&data->deferred))) {
1151                 err = usb_submit_urb(urb, GFP_ATOMIC);
1152                 if (err < 0)
1153                         break;
1154
1155                 data->tx_in_flight++;
1156         }
1157         usb_scuttle_anchored_urbs(&data->deferred);
1158 }
1159
1160 static int btusb_resume(struct usb_interface *intf)
1161 {
1162         struct btusb_data *data = usb_get_intfdata(intf);
1163         struct hci_dev *hdev = data->hdev;
1164         int err = 0;
1165
1166         BT_DBG("intf %p", intf);
1167
1168         if (--data->suspend_count)
1169                 return 0;
1170
1171         if (!test_bit(HCI_RUNNING, &hdev->flags))
1172                 goto done;
1173
1174         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1175                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1176                 if (err < 0) {
1177                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1178                         goto failed;
1179                 }
1180         }
1181
1182         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1183                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1184                 if (err < 0) {
1185                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1186                         goto failed;
1187                 }
1188
1189                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1190         }
1191
1192         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1193                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1194                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1195                 else
1196                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1197         }
1198
1199         spin_lock_irq(&data->txlock);
1200         play_deferred(data);
1201         clear_bit(BTUSB_SUSPENDING, &data->flags);
1202         spin_unlock_irq(&data->txlock);
1203         schedule_work(&data->work);
1204
1205         return 0;
1206
1207 failed:
1208         usb_scuttle_anchored_urbs(&data->deferred);
1209 done:
1210         spin_lock_irq(&data->txlock);
1211         clear_bit(BTUSB_SUSPENDING, &data->flags);
1212         spin_unlock_irq(&data->txlock);
1213
1214         return err;
1215 }
1216 #endif
1217
1218 static struct usb_driver btusb_driver = {
1219         .name           = "btusb",
1220         .probe          = btusb_probe,
1221         .disconnect     = btusb_disconnect,
1222 #ifdef CONFIG_PM
1223         .suspend        = btusb_suspend,
1224         .resume         = btusb_resume,
1225 #endif
1226         .id_table       = btusb_table,
1227         .supports_autosuspend = 1,
1228 };
1229
1230 static int __init btusb_init(void)
1231 {
1232         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1233
1234         return usb_register(&btusb_driver);
1235 }
1236
1237 static void __exit btusb_exit(void)
1238 {
1239         usb_deregister(&btusb_driver);
1240 }
1241
1242 module_init(btusb_init);
1243 module_exit(btusb_exit);
1244
1245 module_param(ignore_dga, bool, 0644);
1246 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1247
1248 module_param(ignore_csr, bool, 0644);
1249 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1250
1251 module_param(ignore_sniffer, bool, 0644);
1252 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1253
1254 module_param(disable_scofix, bool, 0644);
1255 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1256
1257 module_param(force_scofix, bool, 0644);
1258 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1259
1260 module_param(reset, bool, 0644);
1261 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1262
1263 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1264 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1265 MODULE_VERSION(VERSION);
1266 MODULE_LICENSE("GPL");