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/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51
  52 static const struct usb_device_id btusb_table[] = {
  53         /* Generic Bluetooth USB device */
  54         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  55
  56         /* Apple-specific (Broadcom) devices */
  57         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  58
  59         /* MediaTek MT76x0E */
  60         { USB_DEVICE(0x0e8d, 0x763f) },
  61
  62         /* Broadcom SoftSailing reporting vendor specific */
  63         { USB_DEVICE(0x0a5c, 0x21e1) },
  64
  65         /* Apple MacBookPro 7,1 */
  66         { USB_DEVICE(0x05ac, 0x8213) },
  67
  68         /* Apple iMac11,1 */
  69         { USB_DEVICE(0x05ac, 0x8215) },
  70
  71         /* Apple MacBookPro6,2 */
  72         { USB_DEVICE(0x05ac, 0x8218) },
  73
  74         /* Apple MacBookAir3,1, MacBookAir3,2 */
  75         { USB_DEVICE(0x05ac, 0x821b) },
  76
  77         /* Apple MacBookAir4,1 */
  78         { USB_DEVICE(0x05ac, 0x821f) },
  79
  80         /* Apple MacBookPro8,2 */
  81         { USB_DEVICE(0x05ac, 0x821a) },
  82
  83         /* Apple MacMini5,1 */
  84         { USB_DEVICE(0x05ac, 0x8281) },
  85
  86         /* AVM BlueFRITZ! USB v2.0 */
  87         { USB_DEVICE(0x057c, 0x3800) },
  88
  89         /* Bluetooth Ultraport Module from IBM */
  90         { USB_DEVICE(0x04bf, 0x030a) },
  91
  92         /* ALPS Modules with non-standard id */
  93         { USB_DEVICE(0x044e, 0x3001) },
  94         { USB_DEVICE(0x044e, 0x3002) },
  95
  96         /* Ericsson with non-standard id */
  97         { USB_DEVICE(0x0bdb, 0x1002) },
  98
  99         /* Canyon CN-BTU1 with HID interfaces */
 100         { USB_DEVICE(0x0c10, 0x0000) },
 101
 102         /* Broadcom BCM20702A0 */
 103         { USB_DEVICE(0x0489, 0xe042) },
 104         { USB_DEVICE(0x04ca, 0x2003) },
 105         { USB_DEVICE(0x0b05, 0x17b5) },
 106         { USB_DEVICE(0x0b05, 0x17cb) },
 107         { USB_DEVICE(0x413c, 0x8197) },
 108
 109         /* Foxconn - Hon Hai */
 110         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 111
 112         /* Broadcom devices with vendor specific id */
 113         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 114           .driver_info = BTUSB_BCM_PATCHRAM },
 115
 116         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         /* IMC Networks - Broadcom based */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 121
 122         /* Intel Bluetooth USB Bootloader (RAM module) */
 123         { USB_DEVICE(0x8087, 0x0a5a),
 124           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 125
 126         { }     /* Terminating entry */
 127 };
 128
 129 MODULE_DEVICE_TABLE(usb, btusb_table);
 130
 131 static const struct usb_device_id blacklist_table[] = {
 132         /* CSR BlueCore devices */
 133         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 134
 135         /* Broadcom BCM2033 without firmware */
 136         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 137
 138         /* Atheros 3011 with sflash firmware */
 139         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 143         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 145
 146         /* Atheros AR9285 Malbec with sflash firmware */
 147         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 148
 149         /* Atheros 3012 with sflash firmware */
 150         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 181
 182         /* Atheros AR5BBU12 with sflash firmware */
 183         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 184
 185         /* Atheros AR5BBU12 with sflash firmware */
 186         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 188
 189         /* Broadcom BCM2035 */
 190         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 191         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 192         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Broadcom BCM2045 */
 195         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* IBM/Lenovo ThinkPad with Broadcom chip */
 199         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 200         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* HP laptop with Broadcom chip */
 203         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Dell laptop with Broadcom chip */
 206         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Dell Wireless 370 and 410 devices */
 209         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Belkin F8T012 and F8T013 devices */
 213         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 214         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Asus WL-BTD202 device */
 217         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 218
 219         /* Kensington Bluetooth USB adapter */
 220         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* RTX Telecom based adapters with buggy SCO support */
 223         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 224         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 225
 226         /* CONWISE Technology based adapters with buggy SCO support */
 227         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 228
 229         /* Digianswer devices */
 230         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 231         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 232
 233         /* CSR BlueCore Bluetooth Sniffer */
 234         { USB_DEVICE(0x0a12, 0x0002),
 235           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 236
 237         /* Frontline ComProbe Bluetooth Sniffer */
 238         { USB_DEVICE(0x16d3, 0x0002),
 239           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 240
 241         /* Intel Bluetooth device */
 242         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 243         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 244
 245         { }     /* Terminating entry */
 246 };
 247
 248 #define BTUSB_MAX_ISOC_FRAMES   10
 249
 250 #define BTUSB_INTR_RUNNING      0
 251 #define BTUSB_BULK_RUNNING      1
 252 #define BTUSB_ISOC_RUNNING      2
 253 #define BTUSB_SUSPENDING        3
 254 #define BTUSB_DID_ISO_RESUME    4
 255
 256 struct btusb_data {
 257         struct hci_dev       *hdev;
 258         struct usb_device    *udev;
 259         struct usb_interface *intf;
 260         struct usb_interface *isoc;
 261
 262         spinlock_t lock;
 263
 264         unsigned long flags;
 265
 266         struct work_struct work;
 267         struct work_struct waker;
 268
 269         struct usb_anchor tx_anchor;
 270         struct usb_anchor intr_anchor;
 271         struct usb_anchor bulk_anchor;
 272         struct usb_anchor isoc_anchor;
 273         struct usb_anchor deferred;
 274         int tx_in_flight;
 275         spinlock_t txlock;
 276
 277         struct usb_endpoint_descriptor *intr_ep;
 278         struct usb_endpoint_descriptor *bulk_tx_ep;
 279         struct usb_endpoint_descriptor *bulk_rx_ep;
 280         struct usb_endpoint_descriptor *isoc_tx_ep;
 281         struct usb_endpoint_descriptor *isoc_rx_ep;
 282
 283         __u8 cmdreq_type;
 284
 285         unsigned int sco_num;
 286         int isoc_altsetting;
 287         int suspend_count;
 288 };
 289
 290 static int inc_tx(struct btusb_data *data)
 291 {
 292         unsigned long flags;
 293         int rv;
 294
 295         spin_lock_irqsave(&data->txlock, flags);
 296         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 297         if (!rv)
 298                 data->tx_in_flight++;
 299         spin_unlock_irqrestore(&data->txlock, flags);
 300
 301         return rv;
 302 }
 303
 304 static void btusb_intr_complete(struct urb *urb)
 305 {
 306         struct hci_dev *hdev = urb->context;
 307         struct btusb_data *data = hci_get_drvdata(hdev);
 308         int err;
 309
 310         BT_DBG("%s urb %p status %d count %d", hdev->name,
 311                                         urb, urb->status, urb->actual_length);
 312
 313         if (!test_bit(HCI_RUNNING, &hdev->flags))
 314                 return;
 315
 316         if (urb->status == 0) {
 317                 hdev->stat.byte_rx += urb->actual_length;
 318
 319                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 320                                                 urb->transfer_buffer,
 321                                                 urb->actual_length) < 0) {
 322                         BT_ERR("%s corrupted event packet", hdev->name);
 323                         hdev->stat.err_rx++;
 324                 }
 325         }
 326
 327         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 328                 return;
 329
 330         usb_mark_last_busy(data->udev);
 331         usb_anchor_urb(urb, &data->intr_anchor);
 332
 333         err = usb_submit_urb(urb, GFP_ATOMIC);
 334         if (err < 0) {
 335                 /* -EPERM: urb is being killed;
 336                  * -ENODEV: device got disconnected */
 337                 if (err != -EPERM && err != -ENODEV)
 338                         BT_ERR("%s urb %p failed to resubmit (%d)",
 339                                                 hdev->name, urb, -err);
 340                 usb_unanchor_urb(urb);
 341         }
 342 }
 343
 344 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 345 {
 346         struct btusb_data *data = hci_get_drvdata(hdev);
 347         struct urb *urb;
 348         unsigned char *buf;
 349         unsigned int pipe;
 350         int err, size;
 351
 352         BT_DBG("%s", hdev->name);
 353
 354         if (!data->intr_ep)
 355                 return -ENODEV;
 356
 357         urb = usb_alloc_urb(0, mem_flags);
 358         if (!urb)
 359                 return -ENOMEM;
 360
 361         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 362
 363         buf = kmalloc(size, mem_flags);
 364         if (!buf) {
 365                 usb_free_urb(urb);
 366                 return -ENOMEM;
 367         }
 368
 369         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 370
 371         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 372                                                 btusb_intr_complete, hdev,
 373                                                 data->intr_ep->bInterval);
 374
 375         urb->transfer_flags |= URB_FREE_BUFFER;
 376
 377         usb_anchor_urb(urb, &data->intr_anchor);
 378
 379         err = usb_submit_urb(urb, mem_flags);
 380         if (err < 0) {
 381                 if (err != -EPERM && err != -ENODEV)
 382                         BT_ERR("%s urb %p submission failed (%d)",
 383                                                 hdev->name, urb, -err);
 384                 usb_unanchor_urb(urb);
 385         }
 386
 387         usb_free_urb(urb);
 388
 389         return err;
 390 }
 391
 392 static void btusb_bulk_complete(struct urb *urb)
 393 {
 394         struct hci_dev *hdev = urb->context;
 395         struct btusb_data *data = hci_get_drvdata(hdev);
 396         int err;
 397
 398         BT_DBG("%s urb %p status %d count %d", hdev->name,
 399                                         urb, urb->status, urb->actual_length);
 400
 401         if (!test_bit(HCI_RUNNING, &hdev->flags))
 402                 return;
 403
 404         if (urb->status == 0) {
 405                 hdev->stat.byte_rx += urb->actual_length;
 406
 407                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 408                                                 urb->transfer_buffer,
 409                                                 urb->actual_length) < 0) {
 410                         BT_ERR("%s corrupted ACL packet", hdev->name);
 411                         hdev->stat.err_rx++;
 412                 }
 413         }
 414
 415         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 416                 return;
 417
 418         usb_anchor_urb(urb, &data->bulk_anchor);
 419         usb_mark_last_busy(data->udev);
 420
 421         err = usb_submit_urb(urb, GFP_ATOMIC);
 422         if (err < 0) {
 423                 /* -EPERM: urb is being killed;
 424                  * -ENODEV: device got disconnected */
 425                 if (err != -EPERM && err != -ENODEV)
 426                         BT_ERR("%s urb %p failed to resubmit (%d)",
 427                                                 hdev->name, urb, -err);
 428                 usb_unanchor_urb(urb);
 429         }
 430 }
 431
 432 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 433 {
 434         struct btusb_data *data = hci_get_drvdata(hdev);
 435         struct urb *urb;
 436         unsigned char *buf;
 437         unsigned int pipe;
 438         int err, size = HCI_MAX_FRAME_SIZE;
 439
 440         BT_DBG("%s", hdev->name);
 441
 442         if (!data->bulk_rx_ep)
 443                 return -ENODEV;
 444
 445         urb = usb_alloc_urb(0, mem_flags);
 446         if (!urb)
 447                 return -ENOMEM;
 448
 449         buf = kmalloc(size, mem_flags);
 450         if (!buf) {
 451                 usb_free_urb(urb);
 452                 return -ENOMEM;
 453         }
 454
 455         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 456
 457         usb_fill_bulk_urb(urb, data->udev, pipe,
 458                                         buf, size, btusb_bulk_complete, hdev);
 459
 460         urb->transfer_flags |= URB_FREE_BUFFER;
 461
 462         usb_mark_last_busy(data->udev);
 463         usb_anchor_urb(urb, &data->bulk_anchor);
 464
 465         err = usb_submit_urb(urb, mem_flags);
 466         if (err < 0) {
 467                 if (err != -EPERM && err != -ENODEV)
 468                         BT_ERR("%s urb %p submission failed (%d)",
 469                                                 hdev->name, urb, -err);
 470                 usb_unanchor_urb(urb);
 471         }
 472
 473         usb_free_urb(urb);
 474
 475         return err;
 476 }
 477
 478 static void btusb_isoc_complete(struct urb *urb)
 479 {
 480         struct hci_dev *hdev = urb->context;
 481         struct btusb_data *data = hci_get_drvdata(hdev);
 482         int i, err;
 483
 484         BT_DBG("%s urb %p status %d count %d", hdev->name,
 485                                         urb, urb->status, urb->actual_length);
 486
 487         if (!test_bit(HCI_RUNNING, &hdev->flags))
 488                 return;
 489
 490         if (urb->status == 0) {
 491                 for (i = 0; i < urb->number_of_packets; i++) {
 492                         unsigned int offset = urb->iso_frame_desc[i].offset;
 493                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 494
 495                         if (urb->iso_frame_desc[i].status)
 496                                 continue;
 497
 498                         hdev->stat.byte_rx += length;
 499
 500                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 501                                                 urb->transfer_buffer + offset,
 502                                                                 length) < 0) {
 503                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 504                                 hdev->stat.err_rx++;
 505                         }
 506                 }
 507         }
 508
 509         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 510                 return;
 511
 512         usb_anchor_urb(urb, &data->isoc_anchor);
 513
 514         err = usb_submit_urb(urb, GFP_ATOMIC);
 515         if (err < 0) {
 516                 /* -EPERM: urb is being killed;
 517                  * -ENODEV: device got disconnected */
 518                 if (err != -EPERM && err != -ENODEV)
 519                         BT_ERR("%s urb %p failed to resubmit (%d)",
 520                                                 hdev->name, urb, -err);
 521                 usb_unanchor_urb(urb);
 522         }
 523 }
 524
 525 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 526 {
 527         int i, offset = 0;
 528
 529         BT_DBG("len %d mtu %d", len, mtu);
 530
 531         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 532                                         i++, offset += mtu, len -= mtu) {
 533                 urb->iso_frame_desc[i].offset = offset;
 534                 urb->iso_frame_desc[i].length = mtu;
 535         }
 536
 537         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 538                 urb->iso_frame_desc[i].offset = offset;
 539                 urb->iso_frame_desc[i].length = len;
 540                 i++;
 541         }
 542
 543         urb->number_of_packets = i;
 544 }
 545
 546 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 547 {
 548         struct btusb_data *data = hci_get_drvdata(hdev);
 549         struct urb *urb;
 550         unsigned char *buf;
 551         unsigned int pipe;
 552         int err, size;
 553
 554         BT_DBG("%s", hdev->name);
 555
 556         if (!data->isoc_rx_ep)
 557                 return -ENODEV;
 558
 559         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 560         if (!urb)
 561                 return -ENOMEM;
 562
 563         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 564                                                 BTUSB_MAX_ISOC_FRAMES;
 565
 566         buf = kmalloc(size, mem_flags);
 567         if (!buf) {
 568                 usb_free_urb(urb);
 569                 return -ENOMEM;
 570         }
 571
 572         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 573
 574         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 575                                 hdev, data->isoc_rx_ep->bInterval);
 576
 577         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 578
 579         __fill_isoc_descriptor(urb, size,
 580                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 581
 582         usb_anchor_urb(urb, &data->isoc_anchor);
 583
 584         err = usb_submit_urb(urb, mem_flags);
 585         if (err < 0) {
 586                 if (err != -EPERM && err != -ENODEV)
 587                         BT_ERR("%s urb %p submission failed (%d)",
 588                                                 hdev->name, urb, -err);
 589                 usb_unanchor_urb(urb);
 590         }
 591
 592         usb_free_urb(urb);
 593
 594         return err;
 595 }
 596
 597 static void btusb_tx_complete(struct urb *urb)
 598 {
 599         struct sk_buff *skb = urb->context;
 600         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 601         struct btusb_data *data = hci_get_drvdata(hdev);
 602
 603         BT_DBG("%s urb %p status %d count %d", hdev->name,
 604                                         urb, urb->status, urb->actual_length);
 605
 606         if (!test_bit(HCI_RUNNING, &hdev->flags))
 607                 goto done;
 608
 609         if (!urb->status)
 610                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 611         else
 612                 hdev->stat.err_tx++;
 613
 614 done:
 615         spin_lock(&data->txlock);
 616         data->tx_in_flight--;
 617         spin_unlock(&data->txlock);
 618
 619         kfree(urb->setup_packet);
 620
 621         kfree_skb(skb);
 622 }
 623
 624 static void btusb_isoc_tx_complete(struct urb *urb)
 625 {
 626         struct sk_buff *skb = urb->context;
 627         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 628
 629         BT_DBG("%s urb %p status %d count %d", hdev->name,
 630                                         urb, urb->status, urb->actual_length);
 631
 632         if (!test_bit(HCI_RUNNING, &hdev->flags))
 633                 goto done;
 634
 635         if (!urb->status)
 636                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 637         else
 638                 hdev->stat.err_tx++;
 639
 640 done:
 641         kfree(urb->setup_packet);
 642
 643         kfree_skb(skb);
 644 }
 645
 646 static int btusb_open(struct hci_dev *hdev)
 647 {
 648         struct btusb_data *data = hci_get_drvdata(hdev);
 649         int err;
 650
 651         BT_DBG("%s", hdev->name);
 652
 653         err = usb_autopm_get_interface(data->intf);
 654         if (err < 0)
 655                 return err;
 656
 657         data->intf->needs_remote_wakeup = 1;
 658
 659         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 660                 goto done;
 661
 662         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 663                 goto done;
 664
 665         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 666         if (err < 0)
 667                 goto failed;
 668
 669         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 670         if (err < 0) {
 671                 usb_kill_anchored_urbs(&data->intr_anchor);
 672                 goto failed;
 673         }
 674
 675         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 676         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 677
 678 done:
 679         usb_autopm_put_interface(data->intf);
 680         return 0;
 681
 682 failed:
 683         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 684         clear_bit(HCI_RUNNING, &hdev->flags);
 685         usb_autopm_put_interface(data->intf);
 686         return err;
 687 }
 688
 689 static void btusb_stop_traffic(struct btusb_data *data)
 690 {
 691         usb_kill_anchored_urbs(&data->intr_anchor);
 692         usb_kill_anchored_urbs(&data->bulk_anchor);
 693         usb_kill_anchored_urbs(&data->isoc_anchor);
 694 }
 695
 696 static int btusb_close(struct hci_dev *hdev)
 697 {
 698         struct btusb_data *data = hci_get_drvdata(hdev);
 699         int err;
 700
 701         BT_DBG("%s", hdev->name);
 702
 703         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 704                 return 0;
 705
 706         cancel_work_sync(&data->work);
 707         cancel_work_sync(&data->waker);
 708
 709         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 710         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 711         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 712
 713         btusb_stop_traffic(data);
 714         err = usb_autopm_get_interface(data->intf);
 715         if (err < 0)
 716                 goto failed;
 717
 718         data->intf->needs_remote_wakeup = 0;
 719         usb_autopm_put_interface(data->intf);
 720
 721 failed:
 722         usb_scuttle_anchored_urbs(&data->deferred);
 723         return 0;
 724 }
 725
 726 static int btusb_flush(struct hci_dev *hdev)
 727 {
 728         struct btusb_data *data = hci_get_drvdata(hdev);
 729
 730         BT_DBG("%s", hdev->name);
 731
 732         usb_kill_anchored_urbs(&data->tx_anchor);
 733
 734         return 0;
 735 }
 736
 737 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 738 {
 739         struct btusb_data *data = hci_get_drvdata(hdev);
 740         struct usb_ctrlrequest *dr;
 741         struct urb *urb;
 742         unsigned int pipe;
 743         int err;
 744
 745         BT_DBG("%s", hdev->name);
 746
 747         if (!test_bit(HCI_RUNNING, &hdev->flags))
 748                 return -EBUSY;
 749
 750         skb->dev = (void *) hdev;
 751
 752         switch (bt_cb(skb)->pkt_type) {
 753         case HCI_COMMAND_PKT:
 754                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 755                 if (!urb)
 756                         return -ENOMEM;
 757
 758                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 759                 if (!dr) {
 760                         usb_free_urb(urb);
 761                         return -ENOMEM;
 762                 }
 763
 764                 dr->bRequestType = data->cmdreq_type;
 765                 dr->bRequest     = 0;
 766                 dr->wIndex       = 0;
 767                 dr->wValue       = 0;
 768                 dr->wLength      = __cpu_to_le16(skb->len);
 769
 770                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 771
 772                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 773                                 skb->data, skb->len, btusb_tx_complete, skb);
 774
 775                 hdev->stat.cmd_tx++;
 776                 break;
 777
 778         case HCI_ACLDATA_PKT:
 779                 if (!data->bulk_tx_ep)
 780                         return -ENODEV;
 781
 782                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 783                 if (!urb)
 784                         return -ENOMEM;
 785
 786                 pipe = usb_sndbulkpipe(data->udev,
 787                                         data->bulk_tx_ep->bEndpointAddress);
 788
 789                 usb_fill_bulk_urb(urb, data->udev, pipe,
 790                                 skb->data, skb->len, btusb_tx_complete, skb);
 791
 792                 hdev->stat.acl_tx++;
 793                 break;
 794
 795         case HCI_SCODATA_PKT:
 796                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 797                         return -ENODEV;
 798
 799                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 800                 if (!urb)
 801                         return -ENOMEM;
 802
 803                 pipe = usb_sndisocpipe(data->udev,
 804                                         data->isoc_tx_ep->bEndpointAddress);
 805
 806                 usb_fill_int_urb(urb, data->udev, pipe,
 807                                 skb->data, skb->len, btusb_isoc_tx_complete,
 808                                 skb, data->isoc_tx_ep->bInterval);
 809
 810                 urb->transfer_flags  = URB_ISO_ASAP;
 811
 812                 __fill_isoc_descriptor(urb, skb->len,
 813                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 814
 815                 hdev->stat.sco_tx++;
 816                 goto skip_waking;
 817
 818         default:
 819                 return -EILSEQ;
 820         }
 821
 822         err = inc_tx(data);
 823         if (err) {
 824                 usb_anchor_urb(urb, &data->deferred);
 825                 schedule_work(&data->waker);
 826                 err = 0;
 827                 goto done;
 828         }
 829
 830 skip_waking:
 831         usb_anchor_urb(urb, &data->tx_anchor);
 832
 833         err = usb_submit_urb(urb, GFP_ATOMIC);
 834         if (err < 0) {
 835                 if (err != -EPERM && err != -ENODEV)
 836                         BT_ERR("%s urb %p submission failed (%d)",
 837                                                 hdev->name, urb, -err);
 838                 kfree(urb->setup_packet);
 839                 usb_unanchor_urb(urb);
 840         } else {
 841                 usb_mark_last_busy(data->udev);
 842         }
 843
 844 done:
 845         usb_free_urb(urb);
 846         return err;
 847 }
 848
 849 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 850 {
 851         struct btusb_data *data = hci_get_drvdata(hdev);
 852
 853         BT_DBG("%s evt %d", hdev->name, evt);
 854
 855         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 856                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 857                 schedule_work(&data->work);
 858         }
 859 }
 860
 861 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 862 {
 863         struct btusb_data *data = hci_get_drvdata(hdev);
 864         struct usb_interface *intf = data->isoc;
 865         struct usb_endpoint_descriptor *ep_desc;
 866         int i, err;
 867
 868         if (!data->isoc)
 869                 return -ENODEV;
 870
 871         err = usb_set_interface(data->udev, 1, altsetting);
 872         if (err < 0) {
 873                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 874                 return err;
 875         }
 876
 877         data->isoc_altsetting = altsetting;
 878
 879         data->isoc_tx_ep = NULL;
 880         data->isoc_rx_ep = NULL;
 881
 882         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 883                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 884
 885                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 886                         data->isoc_tx_ep = ep_desc;
 887                         continue;
 888                 }
 889
 890                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 891                         data->isoc_rx_ep = ep_desc;
 892                         continue;
 893                 }
 894         }
 895
 896         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 897                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 898                 return -ENODEV;
 899         }
 900
 901         return 0;
 902 }
 903
 904 static void btusb_work(struct work_struct *work)
 905 {
 906         struct btusb_data *data = container_of(work, struct btusb_data, work);
 907         struct hci_dev *hdev = data->hdev;
 908         int new_alts;
 909         int err;
 910
 911         if (data->sco_num > 0) {
 912                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 913                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 914                         if (err < 0) {
 915                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 916                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 917                                 return;
 918                         }
 919
 920                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 921                 }
 922
 923                 if (hdev->voice_setting & 0x0020) {
 924                         static const int alts[3] = { 2, 4, 5 };
 925                         new_alts = alts[data->sco_num - 1];
 926                 } else {
 927                         new_alts = data->sco_num;
 928                 }
 929
 930                 if (data->isoc_altsetting != new_alts) {
 931                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 932                         usb_kill_anchored_urbs(&data->isoc_anchor);
 933
 934                         if (__set_isoc_interface(hdev, new_alts) < 0)
 935                                 return;
 936                 }
 937
 938                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 939                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 940                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 941                         else
 942                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 943                 }
 944         } else {
 945                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 946                 usb_kill_anchored_urbs(&data->isoc_anchor);
 947
 948                 __set_isoc_interface(hdev, 0);
 949                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 950                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 951         }
 952 }
 953
 954 static void btusb_waker(struct work_struct *work)
 955 {
 956         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 957         int err;
 958
 959         err = usb_autopm_get_interface(data->intf);
 960         if (err < 0)
 961                 return;
 962
 963         usb_autopm_put_interface(data->intf);
 964 }
 965
 966 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 967 {
 968         struct sk_buff *skb;
 969         u8 val = 0x00;
 970
 971         BT_DBG("%s", hdev->name);
 972
 973         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 974         if (IS_ERR(skb))
 975                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 976         else
 977                 kfree_skb(skb);
 978
 979         return 0;
 980 }
 981
 982 static int btusb_setup_csr(struct hci_dev *hdev)
 983 {
 984         struct hci_rp_read_local_version *rp;
 985         struct sk_buff *skb;
 986         int ret;
 987
 988         BT_DBG("%s", hdev->name);
 989
 990         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 991                              HCI_INIT_TIMEOUT);
 992         if (IS_ERR(skb)) {
 993                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 994                 return -PTR_ERR(skb);
 995         }
 996
 997         rp = (struct hci_rp_read_local_version *) skb->data;
 998
 999         if (!rp->status) {
1000                 if (le16_to_cpu(rp->manufacturer) != 10) {
1001                         /* Clear the reset quirk since this is not an actual
1002                          * early Bluetooth 1.1 device from CSR.
1003                          */
1004                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1005
1006                         /* These fake CSR controllers have all a broken
1007                          * stored link key handling and so just disable it.
1008                          */
1009                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1010                                 &hdev->quirks);
1011                 }
1012         }
1013
1014         ret = -bt_to_errno(rp->status);
1015
1016         kfree_skb(skb);
1017
1018         return ret;
1019 }
1020
1021 struct intel_version {
1022         u8 status;
1023         u8 hw_platform;
1024         u8 hw_variant;
1025         u8 hw_revision;
1026         u8 fw_variant;
1027         u8 fw_revision;
1028         u8 fw_build_num;
1029         u8 fw_build_ww;
1030         u8 fw_build_yy;
1031         u8 fw_patch_num;
1032 } __packed;
1033
1034 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1035                                                 struct intel_version *ver)
1036 {
1037         const struct firmware *fw;
1038         char fwname[64];
1039         int ret;
1040
1041         snprintf(fwname, sizeof(fwname),
1042                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1043                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1044                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1045                  ver->fw_build_ww, ver->fw_build_yy);
1046
1047         ret = request_firmware(&fw, fwname, &hdev->dev);
1048         if (ret < 0) {
1049                 if (ret == -EINVAL) {
1050                         BT_ERR("%s Intel firmware file request failed (%d)",
1051                                hdev->name, ret);
1052                         return NULL;
1053                 }
1054
1055                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1056                        hdev->name, fwname, ret);
1057
1058                 /* If the correct firmware patch file is not found, use the
1059                  * default firmware patch file instead
1060                  */
1061                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1062                          ver->hw_platform, ver->hw_variant);
1063                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1064                         BT_ERR("%s failed to open default Intel fw file: %s",
1065                                hdev->name, fwname);
1066                         return NULL;
1067                 }
1068         }
1069
1070         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1071
1072         return fw;
1073 }
1074
1075 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1076                                       const struct firmware *fw,
1077                                       const u8 **fw_ptr, int *disable_patch)
1078 {
1079         struct sk_buff *skb;
1080         struct hci_command_hdr *cmd;
1081         const u8 *cmd_param;
1082         struct hci_event_hdr *evt = NULL;
1083         const u8 *evt_param = NULL;
1084         int remain = fw->size - (*fw_ptr - fw->data);
1085
1086         /* The first byte indicates the types of the patch command or event.
1087          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1088          * in the current firmware buffer doesn't start with 0x01 or
1089          * the size of remain buffer is smaller than HCI command header,
1090          * the firmware file is corrupted and it should stop the patching
1091          * process.
1092          */
1093         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1094                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1095                 return -EINVAL;
1096         }
1097         (*fw_ptr)++;
1098         remain--;
1099
1100         cmd = (struct hci_command_hdr *)(*fw_ptr);
1101         *fw_ptr += sizeof(*cmd);
1102         remain -= sizeof(*cmd);
1103
1104         /* Ensure that the remain firmware data is long enough than the length
1105          * of command parameter. If not, the firmware file is corrupted.
1106          */
1107         if (remain < cmd->plen) {
1108                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1109                 return -EFAULT;
1110         }
1111
1112         /* If there is a command that loads a patch in the firmware
1113          * file, then enable the patch upon success, otherwise just
1114          * disable the manufacturer mode, for example patch activation
1115          * is not required when the default firmware patch file is used
1116          * because there are no patch data to load.
1117          */
1118         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1119                 *disable_patch = 0;
1120
1121         cmd_param = *fw_ptr;
1122         *fw_ptr += cmd->plen;
1123         remain -= cmd->plen;
1124
1125         /* This reads the expected events when the above command is sent to the
1126          * device. Some vendor commands expects more than one events, for
1127          * example command status event followed by vendor specific event.
1128          * For this case, it only keeps the last expected event. so the command
1129          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1130          * last expected event.
1131          */
1132         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1133                 (*fw_ptr)++;
1134                 remain--;
1135
1136                 evt = (struct hci_event_hdr *)(*fw_ptr);
1137                 *fw_ptr += sizeof(*evt);
1138                 remain -= sizeof(*evt);
1139
1140                 if (remain < evt->plen) {
1141                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1142                                hdev->name);
1143                         return -EFAULT;
1144                 }
1145
1146                 evt_param = *fw_ptr;
1147                 *fw_ptr += evt->plen;
1148                 remain -= evt->plen;
1149         }
1150
1151         /* Every HCI commands in the firmware file has its correspond event.
1152          * If event is not found or remain is smaller than zero, the firmware
1153          * file is corrupted.
1154          */
1155         if (!evt || !evt_param || remain < 0) {
1156                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1157                 return -EFAULT;
1158         }
1159
1160         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1161                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1162         if (IS_ERR(skb)) {
1163                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1164                        hdev->name, cmd->opcode, PTR_ERR(skb));
1165                 return PTR_ERR(skb);
1166         }
1167
1168         /* It ensures that the returned event matches the event data read from
1169          * the firmware file. At fist, it checks the length and then
1170          * the contents of the event.
1171          */
1172         if (skb->len != evt->plen) {
1173                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1174                        le16_to_cpu(cmd->opcode));
1175                 kfree_skb(skb);
1176                 return -EFAULT;
1177         }
1178
1179         if (memcmp(skb->data, evt_param, evt->plen)) {
1180                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1181                        hdev->name, le16_to_cpu(cmd->opcode));
1182                 kfree_skb(skb);
1183                 return -EFAULT;
1184         }
1185         kfree_skb(skb);
1186
1187         return 0;
1188 }
1189
1190 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1191
1192 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1193 {
1194         struct sk_buff *skb;
1195         struct hci_rp_read_bd_addr *rp;
1196
1197         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1198                              HCI_INIT_TIMEOUT);
1199         if (IS_ERR(skb)) {
1200                 BT_ERR("%s reading Intel device address failed (%ld)",
1201                        hdev->name, PTR_ERR(skb));
1202                 return PTR_ERR(skb);
1203         }
1204
1205         if (skb->len != sizeof(*rp)) {
1206                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1207                 kfree_skb(skb);
1208                 return -EIO;
1209         }
1210
1211         rp = (struct hci_rp_read_bd_addr *) skb->data;
1212         if (rp->status) {
1213                 BT_ERR("%s Intel device address result failed (%02x)",
1214                        hdev->name, rp->status);
1215                 kfree_skb(skb);
1216                 return -bt_to_errno(rp->status);
1217         }
1218
1219         /* For some Intel based controllers, the default Bluetooth device
1220          * address 00:03:19:9E:8B:00 can be found. These controllers are
1221          * fully operational, but have the danger of duplicate addresses
1222          * and that in turn can cause problems with Bluetooth operation.
1223          */
1224         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1225                 BT_ERR("%s found Intel default device address (%pMR)",
1226                        hdev->name, &rp->bdaddr);
1227                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1228         }
1229
1230         kfree_skb(skb);
1231
1232         return 0;
1233 }
1234
1235 static int btusb_setup_intel(struct hci_dev *hdev)
1236 {
1237         struct sk_buff *skb;
1238         const struct firmware *fw;
1239         const u8 *fw_ptr;
1240         int disable_patch;
1241         struct intel_version *ver;
1242
1243         const u8 mfg_enable[] = { 0x01, 0x00 };
1244         const u8 mfg_disable[] = { 0x00, 0x00 };
1245         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1246         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1247
1248         BT_DBG("%s", hdev->name);
1249
1250         /* The controller has a bug with the first HCI command sent to it
1251          * returning number of completed commands as zero. This would stall the
1252          * command processing in the Bluetooth core.
1253          *
1254          * As a workaround, send HCI Reset command first which will reset the
1255          * number of completed commands and allow normal command processing
1256          * from now on.
1257          */
1258         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1259         if (IS_ERR(skb)) {
1260                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1261                        hdev->name, PTR_ERR(skb));
1262                 return PTR_ERR(skb);
1263         }
1264         kfree_skb(skb);
1265
1266         /* Read Intel specific controller version first to allow selection of
1267          * which firmware file to load.
1268          *
1269          * The returned information are hardware variant and revision plus
1270          * firmware variant, revision and build number.
1271          */
1272         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1273         if (IS_ERR(skb)) {
1274                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1275                        hdev->name, PTR_ERR(skb));
1276                 return PTR_ERR(skb);
1277         }
1278
1279         if (skb->len != sizeof(*ver)) {
1280                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1281                 kfree_skb(skb);
1282                 return -EIO;
1283         }
1284
1285         ver = (struct intel_version *)skb->data;
1286         if (ver->status) {
1287                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1288                        ver->status);
1289                 kfree_skb(skb);
1290                 return -bt_to_errno(ver->status);
1291         }
1292
1293         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1294                 hdev->name, ver->hw_platform, ver->hw_variant,
1295                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1296                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1297                 ver->fw_patch_num);
1298
1299         /* fw_patch_num indicates the version of patch the device currently
1300          * have. If there is no patch data in the device, it is always 0x00.
1301          * So, if it is other than 0x00, no need to patch the deivce again.
1302          */
1303         if (ver->fw_patch_num) {
1304                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1305                         hdev->name, ver->fw_patch_num);
1306                 kfree_skb(skb);
1307                 btusb_check_bdaddr_intel(hdev);
1308                 return 0;
1309         }
1310
1311         /* Opens the firmware patch file based on the firmware version read
1312          * from the controller. If it fails to open the matching firmware
1313          * patch file, it tries to open the default firmware patch file.
1314          * If no patch file is found, allow the device to operate without
1315          * a patch.
1316          */
1317         fw = btusb_setup_intel_get_fw(hdev, ver);
1318         if (!fw) {
1319                 kfree_skb(skb);
1320                 btusb_check_bdaddr_intel(hdev);
1321                 return 0;
1322         }
1323         fw_ptr = fw->data;
1324
1325         /* This Intel specific command enables the manufacturer mode of the
1326          * controller.
1327          *
1328          * Only while this mode is enabled, the driver can download the
1329          * firmware patch data and configuration parameters.
1330          */
1331         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1332         if (IS_ERR(skb)) {
1333                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1334                        hdev->name, PTR_ERR(skb));
1335                 release_firmware(fw);
1336                 return PTR_ERR(skb);
1337         }
1338
1339         if (skb->data[0]) {
1340                 u8 evt_status = skb->data[0];
1341                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1342                        hdev->name, evt_status);
1343                 kfree_skb(skb);
1344                 release_firmware(fw);
1345                 return -bt_to_errno(evt_status);
1346         }
1347         kfree_skb(skb);
1348
1349         disable_patch = 1;
1350
1351         /* The firmware data file consists of list of Intel specific HCI
1352          * commands and its expected events. The first byte indicates the
1353          * type of the message, either HCI command or HCI event.
1354          *
1355          * It reads the command and its expected event from the firmware file,
1356          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1357          * the returned event is compared with the event read from the firmware
1358          * file and it will continue until all the messages are downloaded to
1359          * the controller.
1360          *
1361          * Once the firmware patching is completed successfully,
1362          * the manufacturer mode is disabled with reset and activating the
1363          * downloaded patch.
1364          *
1365          * If the firmware patching fails, the manufacturer mode is
1366          * disabled with reset and deactivating the patch.
1367          *
1368          * If the default patch file is used, no reset is done when disabling
1369          * the manufacturer.
1370          */
1371         while (fw->size > fw_ptr - fw->data) {
1372                 int ret;
1373
1374                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1375                                                  &disable_patch);
1376                 if (ret < 0)
1377                         goto exit_mfg_deactivate;
1378         }
1379
1380         release_firmware(fw);
1381
1382         if (disable_patch)
1383                 goto exit_mfg_disable;
1384
1385         /* Patching completed successfully and disable the manufacturer mode
1386          * with reset and activate the downloaded firmware patches.
1387          */
1388         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1389                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1390         if (IS_ERR(skb)) {
1391                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1392                        hdev->name, PTR_ERR(skb));
1393                 return PTR_ERR(skb);
1394         }
1395         kfree_skb(skb);
1396
1397         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1398                 hdev->name);
1399
1400         btusb_check_bdaddr_intel(hdev);
1401         return 0;
1402
1403 exit_mfg_disable:
1404         /* Disable the manufacturer mode without reset */
1405         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1406                              HCI_INIT_TIMEOUT);
1407         if (IS_ERR(skb)) {
1408                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1409                        hdev->name, PTR_ERR(skb));
1410                 return PTR_ERR(skb);
1411         }
1412         kfree_skb(skb);
1413
1414         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1415
1416         btusb_check_bdaddr_intel(hdev);
1417         return 0;
1418
1419 exit_mfg_deactivate:
1420         release_firmware(fw);
1421
1422         /* Patching failed. Disable the manufacturer mode with reset and
1423          * deactivate the downloaded firmware patches.
1424          */
1425         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1426                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1427         if (IS_ERR(skb)) {
1428                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1429                        hdev->name, PTR_ERR(skb));
1430                 return PTR_ERR(skb);
1431         }
1432         kfree_skb(skb);
1433
1434         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1435                 hdev->name);
1436
1437         btusb_check_bdaddr_intel(hdev);
1438         return 0;
1439 }
1440
1441 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1442 {
1443         struct sk_buff *skb;
1444         long ret;
1445
1446         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1447         if (IS_ERR(skb)) {
1448                 ret = PTR_ERR(skb);
1449                 BT_ERR("%s: changing Intel device address failed (%ld)",
1450                         hdev->name, ret);
1451                 return ret;
1452         }
1453         kfree_skb(skb);
1454
1455         return 0;
1456 }
1457
1458 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1459
1460 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1461 {
1462         struct btusb_data *data = hci_get_drvdata(hdev);
1463         struct usb_device *udev = data->udev;
1464         char fw_name[64];
1465         const struct firmware *fw;
1466         const u8 *fw_ptr;
1467         size_t fw_size;
1468         const struct hci_command_hdr *cmd;
1469         const u8 *cmd_param;
1470         u16 opcode;
1471         struct sk_buff *skb;
1472         struct hci_rp_read_local_version *ver;
1473         struct hci_rp_read_bd_addr *bda;
1474         long ret;
1475
1476         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1477                  udev->product ? udev->product : "BCM",
1478                  le16_to_cpu(udev->descriptor.idVendor),
1479                  le16_to_cpu(udev->descriptor.idProduct));
1480
1481         ret = request_firmware(&fw, fw_name, &hdev->dev);
1482         if (ret < 0) {
1483                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1484                 return 0;
1485         }
1486
1487         /* Reset */
1488         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1489         if (IS_ERR(skb)) {
1490                 ret = PTR_ERR(skb);
1491                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1492                 goto done;
1493         }
1494         kfree_skb(skb);
1495
1496         /* Read Local Version Info */
1497         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1498                              HCI_INIT_TIMEOUT);
1499         if (IS_ERR(skb)) {
1500                 ret = PTR_ERR(skb);
1501                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1502                         hdev->name, ret);
1503                 goto done;
1504         }
1505
1506         if (skb->len != sizeof(*ver)) {
1507                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1508                         hdev->name);
1509                 kfree_skb(skb);
1510                 ret = -EIO;
1511                 goto done;
1512         }
1513
1514         ver = (struct hci_rp_read_local_version *) skb->data;
1515         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1516                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1517                 ver->lmp_ver, ver->lmp_subver);
1518         kfree_skb(skb);
1519
1520         /* Start Download */
1521         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1522         if (IS_ERR(skb)) {
1523                 ret = PTR_ERR(skb);
1524                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1525                         hdev->name, ret);
1526                 goto reset_fw;
1527         }
1528         kfree_skb(skb);
1529
1530         /* 50 msec delay after Download Minidrv completes */
1531         msleep(50);
1532
1533         fw_ptr = fw->data;
1534         fw_size = fw->size;
1535
1536         while (fw_size >= sizeof(*cmd)) {
1537                 cmd = (struct hci_command_hdr *) fw_ptr;
1538                 fw_ptr += sizeof(*cmd);
1539                 fw_size -= sizeof(*cmd);
1540
1541                 if (fw_size < cmd->plen) {
1542                         BT_ERR("%s: BCM: patch %s is corrupted",
1543                                 hdev->name, fw_name);
1544                         ret = -EINVAL;
1545                         goto reset_fw;
1546                 }
1547
1548                 cmd_param = fw_ptr;
1549                 fw_ptr += cmd->plen;
1550                 fw_size -= cmd->plen;
1551
1552                 opcode = le16_to_cpu(cmd->opcode);
1553
1554                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1555                                      HCI_INIT_TIMEOUT);
1556                 if (IS_ERR(skb)) {
1557                         ret = PTR_ERR(skb);
1558                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1559                                 hdev->name, opcode, ret);
1560                         goto reset_fw;
1561                 }
1562                 kfree_skb(skb);
1563         }
1564
1565         /* 250 msec delay after Launch Ram completes */
1566         msleep(250);
1567
1568 reset_fw:
1569         /* Reset */
1570         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1571         if (IS_ERR(skb)) {
1572                 ret = PTR_ERR(skb);
1573                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1574                 goto done;
1575         }
1576         kfree_skb(skb);
1577
1578         /* Read Local Version Info */
1579         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1580                              HCI_INIT_TIMEOUT);
1581         if (IS_ERR(skb)) {
1582                 ret = PTR_ERR(skb);
1583                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1584                         hdev->name, ret);
1585                 goto done;
1586         }
1587
1588         if (skb->len != sizeof(*ver)) {
1589                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1590                         hdev->name);
1591                 kfree_skb(skb);
1592                 ret = -EIO;
1593                 goto done;
1594         }
1595
1596         ver = (struct hci_rp_read_local_version *) skb->data;
1597         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1598                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1599                 ver->lmp_ver, ver->lmp_subver);
1600         kfree_skb(skb);
1601
1602         /* Read BD Address */
1603         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1604                              HCI_INIT_TIMEOUT);
1605         if (IS_ERR(skb)) {
1606                 ret = PTR_ERR(skb);
1607                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1608                         hdev->name, ret);
1609                 goto done;
1610         }
1611
1612         if (skb->len != sizeof(*bda)) {
1613                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1614                         hdev->name);
1615                 kfree_skb(skb);
1616                 ret = -EIO;
1617                 goto done;
1618         }
1619
1620         bda = (struct hci_rp_read_bd_addr *) skb->data;
1621         if (bda->status) {
1622                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1623                        hdev->name, bda->status);
1624                 kfree_skb(skb);
1625                 ret = -bt_to_errno(bda->status);
1626                 goto done;
1627         }
1628
1629         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1630          * with no configured address.
1631          */
1632         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1633                 BT_INFO("%s: BCM: using default device address (%pMR)",
1634                         hdev->name, &bda->bdaddr);
1635                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1636         }
1637
1638         kfree_skb(skb);
1639
1640 done:
1641         release_firmware(fw);
1642
1643         return ret;
1644 }
1645
1646 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1647 {
1648         struct sk_buff *skb;
1649         long ret;
1650
1651         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1652         if (IS_ERR(skb)) {
1653                 ret = PTR_ERR(skb);
1654                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1655                         hdev->name, ret);
1656                 return ret;
1657         }
1658         kfree_skb(skb);
1659
1660         return 0;
1661 }
1662
1663 static int btusb_probe(struct usb_interface *intf,
1664                                 const struct usb_device_id *id)
1665 {
1666         struct usb_endpoint_descriptor *ep_desc;
1667         struct btusb_data *data;
1668         struct hci_dev *hdev;
1669         int i, err;
1670
1671         BT_DBG("intf %p id %p", intf, id);
1672
1673         /* interface numbers are hardcoded in the spec */
1674         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1675                 return -ENODEV;
1676
1677         if (!id->driver_info) {
1678                 const struct usb_device_id *match;
1679                 match = usb_match_id(intf, blacklist_table);
1680                 if (match)
1681                         id = match;
1682         }
1683
1684         if (id->driver_info == BTUSB_IGNORE)
1685                 return -ENODEV;
1686
1687         if (id->driver_info & BTUSB_ATH3012) {
1688                 struct usb_device *udev = interface_to_usbdev(intf);
1689
1690                 /* Old firmware would otherwise let ath3k driver load
1691                  * patch and sysconfig files */
1692                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1693                         return -ENODEV;
1694         }
1695
1696         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1697         if (!data)
1698                 return -ENOMEM;
1699
1700         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1701                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1702
1703                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1704                         data->intr_ep = ep_desc;
1705                         continue;
1706                 }
1707
1708                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1709                         data->bulk_tx_ep = ep_desc;
1710                         continue;
1711                 }
1712
1713                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1714                         data->bulk_rx_ep = ep_desc;
1715                         continue;
1716                 }
1717         }
1718
1719         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1720                 return -ENODEV;
1721
1722         data->cmdreq_type = USB_TYPE_CLASS;
1723
1724         data->udev = interface_to_usbdev(intf);
1725         data->intf = intf;
1726
1727         spin_lock_init(&data->lock);
1728
1729         INIT_WORK(&data->work, btusb_work);
1730         INIT_WORK(&data->waker, btusb_waker);
1731         spin_lock_init(&data->txlock);
1732
1733         init_usb_anchor(&data->tx_anchor);
1734         init_usb_anchor(&data->intr_anchor);
1735         init_usb_anchor(&data->bulk_anchor);
1736         init_usb_anchor(&data->isoc_anchor);
1737         init_usb_anchor(&data->deferred);
1738
1739         hdev = hci_alloc_dev();
1740         if (!hdev)
1741                 return -ENOMEM;
1742
1743         hdev->bus = HCI_USB;
1744         hci_set_drvdata(hdev, data);
1745
1746         data->hdev = hdev;
1747
1748         SET_HCIDEV_DEV(hdev, &intf->dev);
1749
1750         hdev->open   = btusb_open;
1751         hdev->close  = btusb_close;
1752         hdev->flush  = btusb_flush;
1753         hdev->send   = btusb_send_frame;
1754         hdev->notify = btusb_notify;
1755
1756         if (id->driver_info & BTUSB_BCM92035)
1757                 hdev->setup = btusb_setup_bcm92035;
1758
1759         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1760                 hdev->setup = btusb_setup_bcm_patchram;
1761                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1762         }
1763
1764         if (id->driver_info & BTUSB_INTEL) {
1765                 hdev->setup = btusb_setup_intel;
1766                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1767         }
1768
1769         if (id->driver_info & BTUSB_INTEL_BOOT)
1770                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1771
1772         /* Interface numbers are hardcoded in the specification */
1773         data->isoc = usb_ifnum_to_if(data->udev, 1);
1774
1775         if (!reset)
1776                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1777
1778         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1779                 if (!disable_scofix)
1780                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1781         }
1782
1783         if (id->driver_info & BTUSB_BROKEN_ISOC)
1784                 data->isoc = NULL;
1785
1786         if (id->driver_info & BTUSB_DIGIANSWER) {
1787                 data->cmdreq_type = USB_TYPE_VENDOR;
1788                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1789         }
1790
1791         if (id->driver_info & BTUSB_CSR) {
1792                 struct usb_device *udev = data->udev;
1793                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1794
1795                 /* Old firmware would otherwise execute USB reset */
1796                 if (bcdDevice < 0x117)
1797                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1798
1799                 /* Fake CSR devices with broken commands */
1800                 if (bcdDevice <= 0x100)
1801                         hdev->setup = btusb_setup_csr;
1802         }
1803
1804         if (id->driver_info & BTUSB_SNIFFER) {
1805                 struct usb_device *udev = data->udev;
1806
1807                 /* New sniffer firmware has crippled HCI interface */
1808                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1809                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1810         }
1811
1812         if (id->driver_info & BTUSB_INTEL_BOOT) {
1813                 /* A bug in the bootloader causes that interrupt interface is
1814                  * only enabled after receiving SetInterface(0, AltSetting=0).
1815                  */
1816                 err = usb_set_interface(data->udev, 0, 0);
1817                 if (err < 0) {
1818                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1819                         hci_free_dev(hdev);
1820                         return err;
1821                 }
1822         }
1823
1824         if (data->isoc) {
1825                 err = usb_driver_claim_interface(&btusb_driver,
1826                                                         data->isoc, data);
1827                 if (err < 0) {
1828                         hci_free_dev(hdev);
1829                         return err;
1830                 }
1831         }
1832
1833         err = hci_register_dev(hdev);
1834         if (err < 0) {
1835                 hci_free_dev(hdev);
1836                 return err;
1837         }
1838
1839         usb_set_intfdata(intf, data);
1840
1841         return 0;
1842 }
1843
1844 static void btusb_disconnect(struct usb_interface *intf)
1845 {
1846         struct btusb_data *data = usb_get_intfdata(intf);
1847         struct hci_dev *hdev;
1848
1849         BT_DBG("intf %p", intf);
1850
1851         if (!data)
1852                 return;
1853
1854         hdev = data->hdev;
1855         usb_set_intfdata(data->intf, NULL);
1856
1857         if (data->isoc)
1858                 usb_set_intfdata(data->isoc, NULL);
1859
1860         hci_unregister_dev(hdev);
1861
1862         if (intf == data->isoc)
1863                 usb_driver_release_interface(&btusb_driver, data->intf);
1864         else if (data->isoc)
1865                 usb_driver_release_interface(&btusb_driver, data->isoc);
1866
1867         hci_free_dev(hdev);
1868 }
1869
1870 #ifdef CONFIG_PM
1871 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1872 {
1873         struct btusb_data *data = usb_get_intfdata(intf);
1874
1875         BT_DBG("intf %p", intf);
1876
1877         if (data->suspend_count++)
1878                 return 0;
1879
1880         spin_lock_irq(&data->txlock);
1881         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1882                 set_bit(BTUSB_SUSPENDING, &data->flags);
1883                 spin_unlock_irq(&data->txlock);
1884         } else {
1885                 spin_unlock_irq(&data->txlock);
1886                 data->suspend_count--;
1887                 return -EBUSY;
1888         }
1889
1890         cancel_work_sync(&data->work);
1891
1892         btusb_stop_traffic(data);
1893         usb_kill_anchored_urbs(&data->tx_anchor);
1894
1895         return 0;
1896 }
1897
1898 static void play_deferred(struct btusb_data *data)
1899 {
1900         struct urb *urb;
1901         int err;
1902
1903         while ((urb = usb_get_from_anchor(&data->deferred))) {
1904                 err = usb_submit_urb(urb, GFP_ATOMIC);
1905                 if (err < 0)
1906                         break;
1907
1908                 data->tx_in_flight++;
1909         }
1910         usb_scuttle_anchored_urbs(&data->deferred);
1911 }
1912
1913 static int btusb_resume(struct usb_interface *intf)
1914 {
1915         struct btusb_data *data = usb_get_intfdata(intf);
1916         struct hci_dev *hdev = data->hdev;
1917         int err = 0;
1918
1919         BT_DBG("intf %p", intf);
1920
1921         if (--data->suspend_count)
1922                 return 0;
1923
1924         if (!test_bit(HCI_RUNNING, &hdev->flags))
1925                 goto done;
1926
1927         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1928                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1929                 if (err < 0) {
1930                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1931                         goto failed;
1932                 }
1933         }
1934
1935         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1936                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1937                 if (err < 0) {
1938                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1939                         goto failed;
1940                 }
1941
1942                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1943         }
1944
1945         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1946                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1947                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1948                 else
1949                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1950         }
1951
1952         spin_lock_irq(&data->txlock);
1953         play_deferred(data);
1954         clear_bit(BTUSB_SUSPENDING, &data->flags);
1955         spin_unlock_irq(&data->txlock);
1956         schedule_work(&data->work);
1957
1958         return 0;
1959
1960 failed:
1961         usb_scuttle_anchored_urbs(&data->deferred);
1962 done:
1963         spin_lock_irq(&data->txlock);
1964         clear_bit(BTUSB_SUSPENDING, &data->flags);
1965         spin_unlock_irq(&data->txlock);
1966
1967         return err;
1968 }
1969 #endif
1970
1971 static struct usb_driver btusb_driver = {
1972         .name           = "btusb",
1973         .probe          = btusb_probe,
1974         .disconnect     = btusb_disconnect,
1975 #ifdef CONFIG_PM
1976         .suspend        = btusb_suspend,
1977         .resume         = btusb_resume,
1978 #endif
1979         .id_table       = btusb_table,
1980         .supports_autosuspend = 1,
1981         .disable_hub_initiated_lpm = 1,
1982 };
1983
1984 module_usb_driver(btusb_driver);
1985
1986 module_param(disable_scofix, bool, 0644);
1987 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1988
1989 module_param(force_scofix, bool, 0644);
1990 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1991
1992 module_param(reset, bool, 0644);
1993 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1994
1995 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1996 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1997 MODULE_VERSION(VERSION);
1998 MODULE_LICENSE("GPL");