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 #define BTUSB_MARVELL           0x800
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  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(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /* Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 115           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* Belkin F8065bf - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 119
 120         /* IMC Networks - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 122
 123         /* Intel Bluetooth USB Bootloader (RAM module) */
 124         { USB_DEVICE(0x8087, 0x0a5a),
 125           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 126
 127         { }     /* Terminating entry */
 128 };
 129
 130 MODULE_DEVICE_TABLE(usb, btusb_table);
 131
 132 static const struct usb_device_id blacklist_table[] = {
 133         /* CSR BlueCore devices */
 134         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 135
 136         /* Broadcom BCM2033 without firmware */
 137         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros 3011 with sflash firmware */
 140         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 143         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 146
 147         /* Atheros AR9285 Malbec with sflash firmware */
 148         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros 3012 with sflash firmware */
 151         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 182
 183         /* Atheros AR5BBU12 with sflash firmware */
 184         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 185
 186         /* Atheros AR5BBU12 with sflash firmware */
 187         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 189
 190         /* Broadcom BCM2035 */
 191         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 192         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* Broadcom BCM2045 */
 196         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* IBM/Lenovo ThinkPad with Broadcom chip */
 200         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 201         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* HP laptop with Broadcom chip */
 204         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* Dell laptop with Broadcom chip */
 207         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Dell Wireless 370 and 410 devices */
 210         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 211         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Belkin F8T012 and F8T013 devices */
 214         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 215         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Asus WL-BTD202 device */
 218         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* Kensington Bluetooth USB adapter */
 221         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 222
 223         /* RTX Telecom based adapters with buggy SCO support */
 224         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 225         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 226
 227         /* CONWISE Technology based adapters with buggy SCO support */
 228         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 229
 230         /* Digianswer devices */
 231         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 232         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 233
 234         /* CSR BlueCore Bluetooth Sniffer */
 235         { USB_DEVICE(0x0a12, 0x0002),
 236           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 237
 238         /* Frontline ComProbe Bluetooth Sniffer */
 239         { USB_DEVICE(0x16d3, 0x0002),
 240           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 241
 242         /* Intel Bluetooth device */
 243         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 244         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 245
 246         /* Marvell device */
 247         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 248         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 249
 250         { }     /* Terminating entry */
 251 };
 252
 253 #define BTUSB_MAX_ISOC_FRAMES   10
 254
 255 #define BTUSB_INTR_RUNNING      0
 256 #define BTUSB_BULK_RUNNING      1
 257 #define BTUSB_ISOC_RUNNING      2
 258 #define BTUSB_SUSPENDING        3
 259 #define BTUSB_DID_ISO_RESUME    4
 260
 261 struct btusb_data {
 262         struct hci_dev       *hdev;
 263         struct usb_device    *udev;
 264         struct usb_interface *intf;
 265         struct usb_interface *isoc;
 266
 267         spinlock_t lock;
 268
 269         unsigned long flags;
 270
 271         struct work_struct work;
 272         struct work_struct waker;
 273
 274         struct usb_anchor tx_anchor;
 275         struct usb_anchor intr_anchor;
 276         struct usb_anchor bulk_anchor;
 277         struct usb_anchor isoc_anchor;
 278         struct usb_anchor deferred;
 279         int tx_in_flight;
 280         spinlock_t txlock;
 281
 282         struct usb_endpoint_descriptor *intr_ep;
 283         struct usb_endpoint_descriptor *bulk_tx_ep;
 284         struct usb_endpoint_descriptor *bulk_rx_ep;
 285         struct usb_endpoint_descriptor *isoc_tx_ep;
 286         struct usb_endpoint_descriptor *isoc_rx_ep;
 287
 288         __u8 cmdreq_type;
 289
 290         unsigned int sco_num;
 291         int isoc_altsetting;
 292         int suspend_count;
 293 };
 294
 295 static int inc_tx(struct btusb_data *data)
 296 {
 297         unsigned long flags;
 298         int rv;
 299
 300         spin_lock_irqsave(&data->txlock, flags);
 301         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 302         if (!rv)
 303                 data->tx_in_flight++;
 304         spin_unlock_irqrestore(&data->txlock, flags);
 305
 306         return rv;
 307 }
 308
 309 static void btusb_intr_complete(struct urb *urb)
 310 {
 311         struct hci_dev *hdev = urb->context;
 312         struct btusb_data *data = hci_get_drvdata(hdev);
 313         int err;
 314
 315         BT_DBG("%s urb %p status %d count %d", hdev->name,
 316                                         urb, urb->status, urb->actual_length);
 317
 318         if (!test_bit(HCI_RUNNING, &hdev->flags))
 319                 return;
 320
 321         if (urb->status == 0) {
 322                 hdev->stat.byte_rx += urb->actual_length;
 323
 324                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 325                                                 urb->transfer_buffer,
 326                                                 urb->actual_length) < 0) {
 327                         BT_ERR("%s corrupted event packet", hdev->name);
 328                         hdev->stat.err_rx++;
 329                 }
 330         }
 331
 332         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 333                 return;
 334
 335         usb_mark_last_busy(data->udev);
 336         usb_anchor_urb(urb, &data->intr_anchor);
 337
 338         err = usb_submit_urb(urb, GFP_ATOMIC);
 339         if (err < 0) {
 340                 /* -EPERM: urb is being killed;
 341                  * -ENODEV: device got disconnected */
 342                 if (err != -EPERM && err != -ENODEV)
 343                         BT_ERR("%s urb %p failed to resubmit (%d)",
 344                                                 hdev->name, urb, -err);
 345                 usb_unanchor_urb(urb);
 346         }
 347 }
 348
 349 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 350 {
 351         struct btusb_data *data = hci_get_drvdata(hdev);
 352         struct urb *urb;
 353         unsigned char *buf;
 354         unsigned int pipe;
 355         int err, size;
 356
 357         BT_DBG("%s", hdev->name);
 358
 359         if (!data->intr_ep)
 360                 return -ENODEV;
 361
 362         urb = usb_alloc_urb(0, mem_flags);
 363         if (!urb)
 364                 return -ENOMEM;
 365
 366         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 367
 368         buf = kmalloc(size, mem_flags);
 369         if (!buf) {
 370                 usb_free_urb(urb);
 371                 return -ENOMEM;
 372         }
 373
 374         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 375
 376         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 377                                                 btusb_intr_complete, hdev,
 378                                                 data->intr_ep->bInterval);
 379
 380         urb->transfer_flags |= URB_FREE_BUFFER;
 381
 382         usb_anchor_urb(urb, &data->intr_anchor);
 383
 384         err = usb_submit_urb(urb, mem_flags);
 385         if (err < 0) {
 386                 if (err != -EPERM && err != -ENODEV)
 387                         BT_ERR("%s urb %p submission failed (%d)",
 388                                                 hdev->name, urb, -err);
 389                 usb_unanchor_urb(urb);
 390         }
 391
 392         usb_free_urb(urb);
 393
 394         return err;
 395 }
 396
 397 static void btusb_bulk_complete(struct urb *urb)
 398 {
 399         struct hci_dev *hdev = urb->context;
 400         struct btusb_data *data = hci_get_drvdata(hdev);
 401         int err;
 402
 403         BT_DBG("%s urb %p status %d count %d", hdev->name,
 404                                         urb, urb->status, urb->actual_length);
 405
 406         if (!test_bit(HCI_RUNNING, &hdev->flags))
 407                 return;
 408
 409         if (urb->status == 0) {
 410                 hdev->stat.byte_rx += urb->actual_length;
 411
 412                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 413                                                 urb->transfer_buffer,
 414                                                 urb->actual_length) < 0) {
 415                         BT_ERR("%s corrupted ACL packet", hdev->name);
 416                         hdev->stat.err_rx++;
 417                 }
 418         }
 419
 420         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 421                 return;
 422
 423         usb_anchor_urb(urb, &data->bulk_anchor);
 424         usb_mark_last_busy(data->udev);
 425
 426         err = usb_submit_urb(urb, GFP_ATOMIC);
 427         if (err < 0) {
 428                 /* -EPERM: urb is being killed;
 429                  * -ENODEV: device got disconnected */
 430                 if (err != -EPERM && err != -ENODEV)
 431                         BT_ERR("%s urb %p failed to resubmit (%d)",
 432                                                 hdev->name, urb, -err);
 433                 usb_unanchor_urb(urb);
 434         }
 435 }
 436
 437 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 438 {
 439         struct btusb_data *data = hci_get_drvdata(hdev);
 440         struct urb *urb;
 441         unsigned char *buf;
 442         unsigned int pipe;
 443         int err, size = HCI_MAX_FRAME_SIZE;
 444
 445         BT_DBG("%s", hdev->name);
 446
 447         if (!data->bulk_rx_ep)
 448                 return -ENODEV;
 449
 450         urb = usb_alloc_urb(0, mem_flags);
 451         if (!urb)
 452                 return -ENOMEM;
 453
 454         buf = kmalloc(size, mem_flags);
 455         if (!buf) {
 456                 usb_free_urb(urb);
 457                 return -ENOMEM;
 458         }
 459
 460         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 461
 462         usb_fill_bulk_urb(urb, data->udev, pipe,
 463                                         buf, size, btusb_bulk_complete, hdev);
 464
 465         urb->transfer_flags |= URB_FREE_BUFFER;
 466
 467         usb_mark_last_busy(data->udev);
 468         usb_anchor_urb(urb, &data->bulk_anchor);
 469
 470         err = usb_submit_urb(urb, mem_flags);
 471         if (err < 0) {
 472                 if (err != -EPERM && err != -ENODEV)
 473                         BT_ERR("%s urb %p submission failed (%d)",
 474                                                 hdev->name, urb, -err);
 475                 usb_unanchor_urb(urb);
 476         }
 477
 478         usb_free_urb(urb);
 479
 480         return err;
 481 }
 482
 483 static void btusb_isoc_complete(struct urb *urb)
 484 {
 485         struct hci_dev *hdev = urb->context;
 486         struct btusb_data *data = hci_get_drvdata(hdev);
 487         int i, err;
 488
 489         BT_DBG("%s urb %p status %d count %d", hdev->name,
 490                                         urb, urb->status, urb->actual_length);
 491
 492         if (!test_bit(HCI_RUNNING, &hdev->flags))
 493                 return;
 494
 495         if (urb->status == 0) {
 496                 for (i = 0; i < urb->number_of_packets; i++) {
 497                         unsigned int offset = urb->iso_frame_desc[i].offset;
 498                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 499
 500                         if (urb->iso_frame_desc[i].status)
 501                                 continue;
 502
 503                         hdev->stat.byte_rx += length;
 504
 505                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 506                                                 urb->transfer_buffer + offset,
 507                                                                 length) < 0) {
 508                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 509                                 hdev->stat.err_rx++;
 510                         }
 511                 }
 512         }
 513
 514         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 515                 return;
 516
 517         usb_anchor_urb(urb, &data->isoc_anchor);
 518
 519         err = usb_submit_urb(urb, GFP_ATOMIC);
 520         if (err < 0) {
 521                 /* -EPERM: urb is being killed;
 522                  * -ENODEV: device got disconnected */
 523                 if (err != -EPERM && err != -ENODEV)
 524                         BT_ERR("%s urb %p failed to resubmit (%d)",
 525                                                 hdev->name, urb, -err);
 526                 usb_unanchor_urb(urb);
 527         }
 528 }
 529
 530 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 531 {
 532         int i, offset = 0;
 533
 534         BT_DBG("len %d mtu %d", len, mtu);
 535
 536         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 537                                         i++, offset += mtu, len -= mtu) {
 538                 urb->iso_frame_desc[i].offset = offset;
 539                 urb->iso_frame_desc[i].length = mtu;
 540         }
 541
 542         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 543                 urb->iso_frame_desc[i].offset = offset;
 544                 urb->iso_frame_desc[i].length = len;
 545                 i++;
 546         }
 547
 548         urb->number_of_packets = i;
 549 }
 550
 551 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 552 {
 553         struct btusb_data *data = hci_get_drvdata(hdev);
 554         struct urb *urb;
 555         unsigned char *buf;
 556         unsigned int pipe;
 557         int err, size;
 558
 559         BT_DBG("%s", hdev->name);
 560
 561         if (!data->isoc_rx_ep)
 562                 return -ENODEV;
 563
 564         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 565         if (!urb)
 566                 return -ENOMEM;
 567
 568         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 569                                                 BTUSB_MAX_ISOC_FRAMES;
 570
 571         buf = kmalloc(size, mem_flags);
 572         if (!buf) {
 573                 usb_free_urb(urb);
 574                 return -ENOMEM;
 575         }
 576
 577         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 578
 579         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 580                                 hdev, data->isoc_rx_ep->bInterval);
 581
 582         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 583
 584         __fill_isoc_descriptor(urb, size,
 585                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 586
 587         usb_anchor_urb(urb, &data->isoc_anchor);
 588
 589         err = usb_submit_urb(urb, mem_flags);
 590         if (err < 0) {
 591                 if (err != -EPERM && err != -ENODEV)
 592                         BT_ERR("%s urb %p submission failed (%d)",
 593                                                 hdev->name, urb, -err);
 594                 usb_unanchor_urb(urb);
 595         }
 596
 597         usb_free_urb(urb);
 598
 599         return err;
 600 }
 601
 602 static void btusb_tx_complete(struct urb *urb)
 603 {
 604         struct sk_buff *skb = urb->context;
 605         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 606         struct btusb_data *data = hci_get_drvdata(hdev);
 607
 608         BT_DBG("%s urb %p status %d count %d", hdev->name,
 609                                         urb, urb->status, urb->actual_length);
 610
 611         if (!test_bit(HCI_RUNNING, &hdev->flags))
 612                 goto done;
 613
 614         if (!urb->status)
 615                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 616         else
 617                 hdev->stat.err_tx++;
 618
 619 done:
 620         spin_lock(&data->txlock);
 621         data->tx_in_flight--;
 622         spin_unlock(&data->txlock);
 623
 624         kfree(urb->setup_packet);
 625
 626         kfree_skb(skb);
 627 }
 628
 629 static void btusb_isoc_tx_complete(struct urb *urb)
 630 {
 631         struct sk_buff *skb = urb->context;
 632         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 633
 634         BT_DBG("%s urb %p status %d count %d", hdev->name,
 635                                         urb, urb->status, urb->actual_length);
 636
 637         if (!test_bit(HCI_RUNNING, &hdev->flags))
 638                 goto done;
 639
 640         if (!urb->status)
 641                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 642         else
 643                 hdev->stat.err_tx++;
 644
 645 done:
 646         kfree(urb->setup_packet);
 647
 648         kfree_skb(skb);
 649 }
 650
 651 static int btusb_open(struct hci_dev *hdev)
 652 {
 653         struct btusb_data *data = hci_get_drvdata(hdev);
 654         int err;
 655
 656         BT_DBG("%s", hdev->name);
 657
 658         err = usb_autopm_get_interface(data->intf);
 659         if (err < 0)
 660                 return err;
 661
 662         data->intf->needs_remote_wakeup = 1;
 663
 664         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 665                 goto done;
 666
 667         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 668                 goto done;
 669
 670         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 671         if (err < 0)
 672                 goto failed;
 673
 674         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 675         if (err < 0) {
 676                 usb_kill_anchored_urbs(&data->intr_anchor);
 677                 goto failed;
 678         }
 679
 680         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 681         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 682
 683 done:
 684         usb_autopm_put_interface(data->intf);
 685         return 0;
 686
 687 failed:
 688         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 689         clear_bit(HCI_RUNNING, &hdev->flags);
 690         usb_autopm_put_interface(data->intf);
 691         return err;
 692 }
 693
 694 static void btusb_stop_traffic(struct btusb_data *data)
 695 {
 696         usb_kill_anchored_urbs(&data->intr_anchor);
 697         usb_kill_anchored_urbs(&data->bulk_anchor);
 698         usb_kill_anchored_urbs(&data->isoc_anchor);
 699 }
 700
 701 static int btusb_close(struct hci_dev *hdev)
 702 {
 703         struct btusb_data *data = hci_get_drvdata(hdev);
 704         int err;
 705
 706         BT_DBG("%s", hdev->name);
 707
 708         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 709                 return 0;
 710
 711         cancel_work_sync(&data->work);
 712         cancel_work_sync(&data->waker);
 713
 714         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 715         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 716         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 717
 718         btusb_stop_traffic(data);
 719         err = usb_autopm_get_interface(data->intf);
 720         if (err < 0)
 721                 goto failed;
 722
 723         data->intf->needs_remote_wakeup = 0;
 724         usb_autopm_put_interface(data->intf);
 725
 726 failed:
 727         usb_scuttle_anchored_urbs(&data->deferred);
 728         return 0;
 729 }
 730
 731 static int btusb_flush(struct hci_dev *hdev)
 732 {
 733         struct btusb_data *data = hci_get_drvdata(hdev);
 734
 735         BT_DBG("%s", hdev->name);
 736
 737         usb_kill_anchored_urbs(&data->tx_anchor);
 738
 739         return 0;
 740 }
 741
 742 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 743 {
 744         struct btusb_data *data = hci_get_drvdata(hdev);
 745         struct usb_ctrlrequest *dr;
 746         struct urb *urb;
 747         unsigned int pipe;
 748         int err;
 749
 750         BT_DBG("%s", hdev->name);
 751
 752         if (!test_bit(HCI_RUNNING, &hdev->flags))
 753                 return -EBUSY;
 754
 755         skb->dev = (void *) hdev;
 756
 757         switch (bt_cb(skb)->pkt_type) {
 758         case HCI_COMMAND_PKT:
 759                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 760                 if (!urb)
 761                         return -ENOMEM;
 762
 763                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 764                 if (!dr) {
 765                         usb_free_urb(urb);
 766                         return -ENOMEM;
 767                 }
 768
 769                 dr->bRequestType = data->cmdreq_type;
 770                 dr->bRequest     = 0;
 771                 dr->wIndex       = 0;
 772                 dr->wValue       = 0;
 773                 dr->wLength      = __cpu_to_le16(skb->len);
 774
 775                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 776
 777                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 778                                 skb->data, skb->len, btusb_tx_complete, skb);
 779
 780                 hdev->stat.cmd_tx++;
 781                 break;
 782
 783         case HCI_ACLDATA_PKT:
 784                 if (!data->bulk_tx_ep)
 785                         return -ENODEV;
 786
 787                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 788                 if (!urb)
 789                         return -ENOMEM;
 790
 791                 pipe = usb_sndbulkpipe(data->udev,
 792                                         data->bulk_tx_ep->bEndpointAddress);
 793
 794                 usb_fill_bulk_urb(urb, data->udev, pipe,
 795                                 skb->data, skb->len, btusb_tx_complete, skb);
 796
 797                 hdev->stat.acl_tx++;
 798                 break;
 799
 800         case HCI_SCODATA_PKT:
 801                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 802                         return -ENODEV;
 803
 804                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 805                 if (!urb)
 806                         return -ENOMEM;
 807
 808                 pipe = usb_sndisocpipe(data->udev,
 809                                         data->isoc_tx_ep->bEndpointAddress);
 810
 811                 usb_fill_int_urb(urb, data->udev, pipe,
 812                                 skb->data, skb->len, btusb_isoc_tx_complete,
 813                                 skb, data->isoc_tx_ep->bInterval);
 814
 815                 urb->transfer_flags  = URB_ISO_ASAP;
 816
 817                 __fill_isoc_descriptor(urb, skb->len,
 818                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 819
 820                 hdev->stat.sco_tx++;
 821                 goto skip_waking;
 822
 823         default:
 824                 return -EILSEQ;
 825         }
 826
 827         err = inc_tx(data);
 828         if (err) {
 829                 usb_anchor_urb(urb, &data->deferred);
 830                 schedule_work(&data->waker);
 831                 err = 0;
 832                 goto done;
 833         }
 834
 835 skip_waking:
 836         usb_anchor_urb(urb, &data->tx_anchor);
 837
 838         err = usb_submit_urb(urb, GFP_ATOMIC);
 839         if (err < 0) {
 840                 if (err != -EPERM && err != -ENODEV)
 841                         BT_ERR("%s urb %p submission failed (%d)",
 842                                                 hdev->name, urb, -err);
 843                 kfree(urb->setup_packet);
 844                 usb_unanchor_urb(urb);
 845         } else {
 846                 usb_mark_last_busy(data->udev);
 847         }
 848
 849 done:
 850         usb_free_urb(urb);
 851         return err;
 852 }
 853
 854 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 855 {
 856         struct btusb_data *data = hci_get_drvdata(hdev);
 857
 858         BT_DBG("%s evt %d", hdev->name, evt);
 859
 860         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 861                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 862                 schedule_work(&data->work);
 863         }
 864 }
 865
 866 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 867 {
 868         struct btusb_data *data = hci_get_drvdata(hdev);
 869         struct usb_interface *intf = data->isoc;
 870         struct usb_endpoint_descriptor *ep_desc;
 871         int i, err;
 872
 873         if (!data->isoc)
 874                 return -ENODEV;
 875
 876         err = usb_set_interface(data->udev, 1, altsetting);
 877         if (err < 0) {
 878                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 879                 return err;
 880         }
 881
 882         data->isoc_altsetting = altsetting;
 883
 884         data->isoc_tx_ep = NULL;
 885         data->isoc_rx_ep = NULL;
 886
 887         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 888                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 889
 890                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 891                         data->isoc_tx_ep = ep_desc;
 892                         continue;
 893                 }
 894
 895                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 896                         data->isoc_rx_ep = ep_desc;
 897                         continue;
 898                 }
 899         }
 900
 901         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 902                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 903                 return -ENODEV;
 904         }
 905
 906         return 0;
 907 }
 908
 909 static void btusb_work(struct work_struct *work)
 910 {
 911         struct btusb_data *data = container_of(work, struct btusb_data, work);
 912         struct hci_dev *hdev = data->hdev;
 913         int new_alts;
 914         int err;
 915
 916         if (data->sco_num > 0) {
 917                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 918                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 919                         if (err < 0) {
 920                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 921                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 922                                 return;
 923                         }
 924
 925                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 926                 }
 927
 928                 if (hdev->voice_setting & 0x0020) {
 929                         static const int alts[3] = { 2, 4, 5 };
 930                         new_alts = alts[data->sco_num - 1];
 931                 } else {
 932                         new_alts = data->sco_num;
 933                 }
 934
 935                 if (data->isoc_altsetting != new_alts) {
 936                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 937                         usb_kill_anchored_urbs(&data->isoc_anchor);
 938
 939                         if (__set_isoc_interface(hdev, new_alts) < 0)
 940                                 return;
 941                 }
 942
 943                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 944                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 945                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 946                         else
 947                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 948                 }
 949         } else {
 950                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 951                 usb_kill_anchored_urbs(&data->isoc_anchor);
 952
 953                 __set_isoc_interface(hdev, 0);
 954                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 955                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 956         }
 957 }
 958
 959 static void btusb_waker(struct work_struct *work)
 960 {
 961         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 962         int err;
 963
 964         err = usb_autopm_get_interface(data->intf);
 965         if (err < 0)
 966                 return;
 967
 968         usb_autopm_put_interface(data->intf);
 969 }
 970
 971 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 972 {
 973         struct sk_buff *skb;
 974         u8 val = 0x00;
 975
 976         BT_DBG("%s", hdev->name);
 977
 978         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 979         if (IS_ERR(skb))
 980                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 981         else
 982                 kfree_skb(skb);
 983
 984         return 0;
 985 }
 986
 987 static int btusb_setup_csr(struct hci_dev *hdev)
 988 {
 989         struct hci_rp_read_local_version *rp;
 990         struct sk_buff *skb;
 991         int ret;
 992
 993         BT_DBG("%s", hdev->name);
 994
 995         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 996                              HCI_INIT_TIMEOUT);
 997         if (IS_ERR(skb)) {
 998                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 999                 return -PTR_ERR(skb);
1000         }
1001
1002         rp = (struct hci_rp_read_local_version *) skb->data;
1003
1004         if (!rp->status) {
1005                 if (le16_to_cpu(rp->manufacturer) != 10) {
1006                         /* Clear the reset quirk since this is not an actual
1007                          * early Bluetooth 1.1 device from CSR.
1008                          */
1009                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1010
1011                         /* These fake CSR controllers have all a broken
1012                          * stored link key handling and so just disable it.
1013                          */
1014                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1015                                 &hdev->quirks);
1016                 }
1017         }
1018
1019         ret = -bt_to_errno(rp->status);
1020
1021         kfree_skb(skb);
1022
1023         return ret;
1024 }
1025
1026 struct intel_version {
1027         u8 status;
1028         u8 hw_platform;
1029         u8 hw_variant;
1030         u8 hw_revision;
1031         u8 fw_variant;
1032         u8 fw_revision;
1033         u8 fw_build_num;
1034         u8 fw_build_ww;
1035         u8 fw_build_yy;
1036         u8 fw_patch_num;
1037 } __packed;
1038
1039 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1040                                                 struct intel_version *ver)
1041 {
1042         const struct firmware *fw;
1043         char fwname[64];
1044         int ret;
1045
1046         snprintf(fwname, sizeof(fwname),
1047                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1048                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1049                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1050                  ver->fw_build_ww, ver->fw_build_yy);
1051
1052         ret = request_firmware(&fw, fwname, &hdev->dev);
1053         if (ret < 0) {
1054                 if (ret == -EINVAL) {
1055                         BT_ERR("%s Intel firmware file request failed (%d)",
1056                                hdev->name, ret);
1057                         return NULL;
1058                 }
1059
1060                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1061                        hdev->name, fwname, ret);
1062
1063                 /* If the correct firmware patch file is not found, use the
1064                  * default firmware patch file instead
1065                  */
1066                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1067                          ver->hw_platform, ver->hw_variant);
1068                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1069                         BT_ERR("%s failed to open default Intel fw file: %s",
1070                                hdev->name, fwname);
1071                         return NULL;
1072                 }
1073         }
1074
1075         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1076
1077         return fw;
1078 }
1079
1080 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1081                                       const struct firmware *fw,
1082                                       const u8 **fw_ptr, int *disable_patch)
1083 {
1084         struct sk_buff *skb;
1085         struct hci_command_hdr *cmd;
1086         const u8 *cmd_param;
1087         struct hci_event_hdr *evt = NULL;
1088         const u8 *evt_param = NULL;
1089         int remain = fw->size - (*fw_ptr - fw->data);
1090
1091         /* The first byte indicates the types of the patch command or event.
1092          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1093          * in the current firmware buffer doesn't start with 0x01 or
1094          * the size of remain buffer is smaller than HCI command header,
1095          * the firmware file is corrupted and it should stop the patching
1096          * process.
1097          */
1098         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1099                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1100                 return -EINVAL;
1101         }
1102         (*fw_ptr)++;
1103         remain--;
1104
1105         cmd = (struct hci_command_hdr *)(*fw_ptr);
1106         *fw_ptr += sizeof(*cmd);
1107         remain -= sizeof(*cmd);
1108
1109         /* Ensure that the remain firmware data is long enough than the length
1110          * of command parameter. If not, the firmware file is corrupted.
1111          */
1112         if (remain < cmd->plen) {
1113                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1114                 return -EFAULT;
1115         }
1116
1117         /* If there is a command that loads a patch in the firmware
1118          * file, then enable the patch upon success, otherwise just
1119          * disable the manufacturer mode, for example patch activation
1120          * is not required when the default firmware patch file is used
1121          * because there are no patch data to load.
1122          */
1123         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1124                 *disable_patch = 0;
1125
1126         cmd_param = *fw_ptr;
1127         *fw_ptr += cmd->plen;
1128         remain -= cmd->plen;
1129
1130         /* This reads the expected events when the above command is sent to the
1131          * device. Some vendor commands expects more than one events, for
1132          * example command status event followed by vendor specific event.
1133          * For this case, it only keeps the last expected event. so the command
1134          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1135          * last expected event.
1136          */
1137         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1138                 (*fw_ptr)++;
1139                 remain--;
1140
1141                 evt = (struct hci_event_hdr *)(*fw_ptr);
1142                 *fw_ptr += sizeof(*evt);
1143                 remain -= sizeof(*evt);
1144
1145                 if (remain < evt->plen) {
1146                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1147                                hdev->name);
1148                         return -EFAULT;
1149                 }
1150
1151                 evt_param = *fw_ptr;
1152                 *fw_ptr += evt->plen;
1153                 remain -= evt->plen;
1154         }
1155
1156         /* Every HCI commands in the firmware file has its correspond event.
1157          * If event is not found or remain is smaller than zero, the firmware
1158          * file is corrupted.
1159          */
1160         if (!evt || !evt_param || remain < 0) {
1161                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1162                 return -EFAULT;
1163         }
1164
1165         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1166                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1167         if (IS_ERR(skb)) {
1168                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1169                        hdev->name, cmd->opcode, PTR_ERR(skb));
1170                 return PTR_ERR(skb);
1171         }
1172
1173         /* It ensures that the returned event matches the event data read from
1174          * the firmware file. At fist, it checks the length and then
1175          * the contents of the event.
1176          */
1177         if (skb->len != evt->plen) {
1178                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1179                        le16_to_cpu(cmd->opcode));
1180                 kfree_skb(skb);
1181                 return -EFAULT;
1182         }
1183
1184         if (memcmp(skb->data, evt_param, evt->plen)) {
1185                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1186                        hdev->name, le16_to_cpu(cmd->opcode));
1187                 kfree_skb(skb);
1188                 return -EFAULT;
1189         }
1190         kfree_skb(skb);
1191
1192         return 0;
1193 }
1194
1195 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1196
1197 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1198 {
1199         struct sk_buff *skb;
1200         struct hci_rp_read_bd_addr *rp;
1201
1202         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1203                              HCI_INIT_TIMEOUT);
1204         if (IS_ERR(skb)) {
1205                 BT_ERR("%s reading Intel device address failed (%ld)",
1206                        hdev->name, PTR_ERR(skb));
1207                 return PTR_ERR(skb);
1208         }
1209
1210         if (skb->len != sizeof(*rp)) {
1211                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1212                 kfree_skb(skb);
1213                 return -EIO;
1214         }
1215
1216         rp = (struct hci_rp_read_bd_addr *) skb->data;
1217         if (rp->status) {
1218                 BT_ERR("%s Intel device address result failed (%02x)",
1219                        hdev->name, rp->status);
1220                 kfree_skb(skb);
1221                 return -bt_to_errno(rp->status);
1222         }
1223
1224         /* For some Intel based controllers, the default Bluetooth device
1225          * address 00:03:19:9E:8B:00 can be found. These controllers are
1226          * fully operational, but have the danger of duplicate addresses
1227          * and that in turn can cause problems with Bluetooth operation.
1228          */
1229         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1230                 BT_ERR("%s found Intel default device address (%pMR)",
1231                        hdev->name, &rp->bdaddr);
1232                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1233         }
1234
1235         kfree_skb(skb);
1236
1237         return 0;
1238 }
1239
1240 static int btusb_setup_intel(struct hci_dev *hdev)
1241 {
1242         struct sk_buff *skb;
1243         const struct firmware *fw;
1244         const u8 *fw_ptr;
1245         int disable_patch;
1246         struct intel_version *ver;
1247
1248         const u8 mfg_enable[] = { 0x01, 0x00 };
1249         const u8 mfg_disable[] = { 0x00, 0x00 };
1250         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1251         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1252
1253         BT_DBG("%s", hdev->name);
1254
1255         /* The controller has a bug with the first HCI command sent to it
1256          * returning number of completed commands as zero. This would stall the
1257          * command processing in the Bluetooth core.
1258          *
1259          * As a workaround, send HCI Reset command first which will reset the
1260          * number of completed commands and allow normal command processing
1261          * from now on.
1262          */
1263         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1264         if (IS_ERR(skb)) {
1265                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1266                        hdev->name, PTR_ERR(skb));
1267                 return PTR_ERR(skb);
1268         }
1269         kfree_skb(skb);
1270
1271         /* Read Intel specific controller version first to allow selection of
1272          * which firmware file to load.
1273          *
1274          * The returned information are hardware variant and revision plus
1275          * firmware variant, revision and build number.
1276          */
1277         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1278         if (IS_ERR(skb)) {
1279                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1280                        hdev->name, PTR_ERR(skb));
1281                 return PTR_ERR(skb);
1282         }
1283
1284         if (skb->len != sizeof(*ver)) {
1285                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1286                 kfree_skb(skb);
1287                 return -EIO;
1288         }
1289
1290         ver = (struct intel_version *)skb->data;
1291         if (ver->status) {
1292                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1293                        ver->status);
1294                 kfree_skb(skb);
1295                 return -bt_to_errno(ver->status);
1296         }
1297
1298         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1299                 hdev->name, ver->hw_platform, ver->hw_variant,
1300                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1301                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1302                 ver->fw_patch_num);
1303
1304         /* fw_patch_num indicates the version of patch the device currently
1305          * have. If there is no patch data in the device, it is always 0x00.
1306          * So, if it is other than 0x00, no need to patch the deivce again.
1307          */
1308         if (ver->fw_patch_num) {
1309                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1310                         hdev->name, ver->fw_patch_num);
1311                 kfree_skb(skb);
1312                 btusb_check_bdaddr_intel(hdev);
1313                 return 0;
1314         }
1315
1316         /* Opens the firmware patch file based on the firmware version read
1317          * from the controller. If it fails to open the matching firmware
1318          * patch file, it tries to open the default firmware patch file.
1319          * If no patch file is found, allow the device to operate without
1320          * a patch.
1321          */
1322         fw = btusb_setup_intel_get_fw(hdev, ver);
1323         if (!fw) {
1324                 kfree_skb(skb);
1325                 btusb_check_bdaddr_intel(hdev);
1326                 return 0;
1327         }
1328         fw_ptr = fw->data;
1329
1330         /* This Intel specific command enables the manufacturer mode of the
1331          * controller.
1332          *
1333          * Only while this mode is enabled, the driver can download the
1334          * firmware patch data and configuration parameters.
1335          */
1336         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1337         if (IS_ERR(skb)) {
1338                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1339                        hdev->name, PTR_ERR(skb));
1340                 release_firmware(fw);
1341                 return PTR_ERR(skb);
1342         }
1343
1344         if (skb->data[0]) {
1345                 u8 evt_status = skb->data[0];
1346                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1347                        hdev->name, evt_status);
1348                 kfree_skb(skb);
1349                 release_firmware(fw);
1350                 return -bt_to_errno(evt_status);
1351         }
1352         kfree_skb(skb);
1353
1354         disable_patch = 1;
1355
1356         /* The firmware data file consists of list of Intel specific HCI
1357          * commands and its expected events. The first byte indicates the
1358          * type of the message, either HCI command or HCI event.
1359          *
1360          * It reads the command and its expected event from the firmware file,
1361          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1362          * the returned event is compared with the event read from the firmware
1363          * file and it will continue until all the messages are downloaded to
1364          * the controller.
1365          *
1366          * Once the firmware patching is completed successfully,
1367          * the manufacturer mode is disabled with reset and activating the
1368          * downloaded patch.
1369          *
1370          * If the firmware patching fails, the manufacturer mode is
1371          * disabled with reset and deactivating the patch.
1372          *
1373          * If the default patch file is used, no reset is done when disabling
1374          * the manufacturer.
1375          */
1376         while (fw->size > fw_ptr - fw->data) {
1377                 int ret;
1378
1379                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1380                                                  &disable_patch);
1381                 if (ret < 0)
1382                         goto exit_mfg_deactivate;
1383         }
1384
1385         release_firmware(fw);
1386
1387         if (disable_patch)
1388                 goto exit_mfg_disable;
1389
1390         /* Patching completed successfully and disable the manufacturer mode
1391          * with reset and activate the downloaded firmware patches.
1392          */
1393         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1394                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1395         if (IS_ERR(skb)) {
1396                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1397                        hdev->name, PTR_ERR(skb));
1398                 return PTR_ERR(skb);
1399         }
1400         kfree_skb(skb);
1401
1402         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1403                 hdev->name);
1404
1405         btusb_check_bdaddr_intel(hdev);
1406         return 0;
1407
1408 exit_mfg_disable:
1409         /* Disable the manufacturer mode without reset */
1410         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1411                              HCI_INIT_TIMEOUT);
1412         if (IS_ERR(skb)) {
1413                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1414                        hdev->name, PTR_ERR(skb));
1415                 return PTR_ERR(skb);
1416         }
1417         kfree_skb(skb);
1418
1419         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1420
1421         btusb_check_bdaddr_intel(hdev);
1422         return 0;
1423
1424 exit_mfg_deactivate:
1425         release_firmware(fw);
1426
1427         /* Patching failed. Disable the manufacturer mode with reset and
1428          * deactivate the downloaded firmware patches.
1429          */
1430         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1431                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1432         if (IS_ERR(skb)) {
1433                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1434                        hdev->name, PTR_ERR(skb));
1435                 return PTR_ERR(skb);
1436         }
1437         kfree_skb(skb);
1438
1439         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1440                 hdev->name);
1441
1442         btusb_check_bdaddr_intel(hdev);
1443         return 0;
1444 }
1445
1446 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1447 {
1448         struct sk_buff *skb;
1449         long ret;
1450
1451         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1452         if (IS_ERR(skb)) {
1453                 ret = PTR_ERR(skb);
1454                 BT_ERR("%s: changing Intel device address failed (%ld)",
1455                         hdev->name, ret);
1456                 return ret;
1457         }
1458         kfree_skb(skb);
1459
1460         return 0;
1461 }
1462
1463 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1464                                     const bdaddr_t *bdaddr)
1465 {
1466         struct sk_buff *skb;
1467         u8 buf[8];
1468         long ret;
1469
1470         buf[0] = 0xfe;
1471         buf[1] = sizeof(bdaddr_t);
1472         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1473
1474         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1475         if (IS_ERR(skb)) {
1476                 ret = PTR_ERR(skb);
1477                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1478                        hdev->name, ret);
1479                 return ret;
1480         }
1481         kfree_skb(skb);
1482
1483         return 0;
1484 }
1485
1486 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1487
1488 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1489 {
1490         struct btusb_data *data = hci_get_drvdata(hdev);
1491         struct usb_device *udev = data->udev;
1492         char fw_name[64];
1493         const struct firmware *fw;
1494         const u8 *fw_ptr;
1495         size_t fw_size;
1496         const struct hci_command_hdr *cmd;
1497         const u8 *cmd_param;
1498         u16 opcode;
1499         struct sk_buff *skb;
1500         struct hci_rp_read_local_version *ver;
1501         struct hci_rp_read_bd_addr *bda;
1502         long ret;
1503
1504         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1505                  udev->product ? udev->product : "BCM",
1506                  le16_to_cpu(udev->descriptor.idVendor),
1507                  le16_to_cpu(udev->descriptor.idProduct));
1508
1509         ret = request_firmware(&fw, fw_name, &hdev->dev);
1510         if (ret < 0) {
1511                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1512                 return 0;
1513         }
1514
1515         /* Reset */
1516         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1517         if (IS_ERR(skb)) {
1518                 ret = PTR_ERR(skb);
1519                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1520                 goto done;
1521         }
1522         kfree_skb(skb);
1523
1524         /* Read Local Version Info */
1525         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1526                              HCI_INIT_TIMEOUT);
1527         if (IS_ERR(skb)) {
1528                 ret = PTR_ERR(skb);
1529                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1530                         hdev->name, ret);
1531                 goto done;
1532         }
1533
1534         if (skb->len != sizeof(*ver)) {
1535                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1536                         hdev->name);
1537                 kfree_skb(skb);
1538                 ret = -EIO;
1539                 goto done;
1540         }
1541
1542         ver = (struct hci_rp_read_local_version *) skb->data;
1543         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1544                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1545                 ver->lmp_ver, ver->lmp_subver);
1546         kfree_skb(skb);
1547
1548         /* Start Download */
1549         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1550         if (IS_ERR(skb)) {
1551                 ret = PTR_ERR(skb);
1552                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1553                         hdev->name, ret);
1554                 goto reset_fw;
1555         }
1556         kfree_skb(skb);
1557
1558         /* 50 msec delay after Download Minidrv completes */
1559         msleep(50);
1560
1561         fw_ptr = fw->data;
1562         fw_size = fw->size;
1563
1564         while (fw_size >= sizeof(*cmd)) {
1565                 cmd = (struct hci_command_hdr *) fw_ptr;
1566                 fw_ptr += sizeof(*cmd);
1567                 fw_size -= sizeof(*cmd);
1568
1569                 if (fw_size < cmd->plen) {
1570                         BT_ERR("%s: BCM: patch %s is corrupted",
1571                                 hdev->name, fw_name);
1572                         ret = -EINVAL;
1573                         goto reset_fw;
1574                 }
1575
1576                 cmd_param = fw_ptr;
1577                 fw_ptr += cmd->plen;
1578                 fw_size -= cmd->plen;
1579
1580                 opcode = le16_to_cpu(cmd->opcode);
1581
1582                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1583                                      HCI_INIT_TIMEOUT);
1584                 if (IS_ERR(skb)) {
1585                         ret = PTR_ERR(skb);
1586                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1587                                 hdev->name, opcode, ret);
1588                         goto reset_fw;
1589                 }
1590                 kfree_skb(skb);
1591         }
1592
1593         /* 250 msec delay after Launch Ram completes */
1594         msleep(250);
1595
1596 reset_fw:
1597         /* Reset */
1598         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1599         if (IS_ERR(skb)) {
1600                 ret = PTR_ERR(skb);
1601                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1602                 goto done;
1603         }
1604         kfree_skb(skb);
1605
1606         /* Read Local Version Info */
1607         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1608                              HCI_INIT_TIMEOUT);
1609         if (IS_ERR(skb)) {
1610                 ret = PTR_ERR(skb);
1611                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1612                         hdev->name, ret);
1613                 goto done;
1614         }
1615
1616         if (skb->len != sizeof(*ver)) {
1617                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1618                         hdev->name);
1619                 kfree_skb(skb);
1620                 ret = -EIO;
1621                 goto done;
1622         }
1623
1624         ver = (struct hci_rp_read_local_version *) skb->data;
1625         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1626                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1627                 ver->lmp_ver, ver->lmp_subver);
1628         kfree_skb(skb);
1629
1630         /* Read BD Address */
1631         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1632                              HCI_INIT_TIMEOUT);
1633         if (IS_ERR(skb)) {
1634                 ret = PTR_ERR(skb);
1635                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1636                         hdev->name, ret);
1637                 goto done;
1638         }
1639
1640         if (skb->len != sizeof(*bda)) {
1641                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1642                         hdev->name);
1643                 kfree_skb(skb);
1644                 ret = -EIO;
1645                 goto done;
1646         }
1647
1648         bda = (struct hci_rp_read_bd_addr *) skb->data;
1649         if (bda->status) {
1650                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1651                        hdev->name, bda->status);
1652                 kfree_skb(skb);
1653                 ret = -bt_to_errno(bda->status);
1654                 goto done;
1655         }
1656
1657         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1658          * with no configured address.
1659          */
1660         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1661                 BT_INFO("%s: BCM: using default device address (%pMR)",
1662                         hdev->name, &bda->bdaddr);
1663                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1664         }
1665
1666         kfree_skb(skb);
1667
1668 done:
1669         release_firmware(fw);
1670
1671         return ret;
1672 }
1673
1674 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1675 {
1676         struct sk_buff *skb;
1677         long ret;
1678
1679         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1680         if (IS_ERR(skb)) {
1681                 ret = PTR_ERR(skb);
1682                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1683                         hdev->name, ret);
1684                 return ret;
1685         }
1686         kfree_skb(skb);
1687
1688         return 0;
1689 }
1690
1691 static int btusb_probe(struct usb_interface *intf,
1692                                 const struct usb_device_id *id)
1693 {
1694         struct usb_endpoint_descriptor *ep_desc;
1695         struct btusb_data *data;
1696         struct hci_dev *hdev;
1697         int i, err;
1698
1699         BT_DBG("intf %p id %p", intf, id);
1700
1701         /* interface numbers are hardcoded in the spec */
1702         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1703                 return -ENODEV;
1704
1705         if (!id->driver_info) {
1706                 const struct usb_device_id *match;
1707                 match = usb_match_id(intf, blacklist_table);
1708                 if (match)
1709                         id = match;
1710         }
1711
1712         if (id->driver_info == BTUSB_IGNORE)
1713                 return -ENODEV;
1714
1715         if (id->driver_info & BTUSB_ATH3012) {
1716                 struct usb_device *udev = interface_to_usbdev(intf);
1717
1718                 /* Old firmware would otherwise let ath3k driver load
1719                  * patch and sysconfig files */
1720                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1721                         return -ENODEV;
1722         }
1723
1724         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1725         if (!data)
1726                 return -ENOMEM;
1727
1728         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1729                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1730
1731                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1732                         data->intr_ep = ep_desc;
1733                         continue;
1734                 }
1735
1736                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1737                         data->bulk_tx_ep = ep_desc;
1738                         continue;
1739                 }
1740
1741                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1742                         data->bulk_rx_ep = ep_desc;
1743                         continue;
1744                 }
1745         }
1746
1747         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1748                 return -ENODEV;
1749
1750         data->cmdreq_type = USB_TYPE_CLASS;
1751
1752         data->udev = interface_to_usbdev(intf);
1753         data->intf = intf;
1754
1755         spin_lock_init(&data->lock);
1756
1757         INIT_WORK(&data->work, btusb_work);
1758         INIT_WORK(&data->waker, btusb_waker);
1759         spin_lock_init(&data->txlock);
1760
1761         init_usb_anchor(&data->tx_anchor);
1762         init_usb_anchor(&data->intr_anchor);
1763         init_usb_anchor(&data->bulk_anchor);
1764         init_usb_anchor(&data->isoc_anchor);
1765         init_usb_anchor(&data->deferred);
1766
1767         hdev = hci_alloc_dev();
1768         if (!hdev)
1769                 return -ENOMEM;
1770
1771         hdev->bus = HCI_USB;
1772         hci_set_drvdata(hdev, data);
1773
1774         data->hdev = hdev;
1775
1776         SET_HCIDEV_DEV(hdev, &intf->dev);
1777
1778         hdev->open   = btusb_open;
1779         hdev->close  = btusb_close;
1780         hdev->flush  = btusb_flush;
1781         hdev->send   = btusb_send_frame;
1782         hdev->notify = btusb_notify;
1783
1784         if (id->driver_info & BTUSB_BCM92035)
1785                 hdev->setup = btusb_setup_bcm92035;
1786
1787         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1788                 hdev->setup = btusb_setup_bcm_patchram;
1789                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1790         }
1791
1792         if (id->driver_info & BTUSB_INTEL) {
1793                 hdev->setup = btusb_setup_intel;
1794                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1795         }
1796
1797         if (id->driver_info & BTUSB_MARVELL)
1798                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
1799
1800         if (id->driver_info & BTUSB_INTEL_BOOT)
1801                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1802
1803         /* Interface numbers are hardcoded in the specification */
1804         data->isoc = usb_ifnum_to_if(data->udev, 1);
1805
1806         if (!reset)
1807                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1808
1809         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1810                 if (!disable_scofix)
1811                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1812         }
1813
1814         if (id->driver_info & BTUSB_BROKEN_ISOC)
1815                 data->isoc = NULL;
1816
1817         if (id->driver_info & BTUSB_DIGIANSWER) {
1818                 data->cmdreq_type = USB_TYPE_VENDOR;
1819                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1820         }
1821
1822         if (id->driver_info & BTUSB_CSR) {
1823                 struct usb_device *udev = data->udev;
1824                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1825
1826                 /* Old firmware would otherwise execute USB reset */
1827                 if (bcdDevice < 0x117)
1828                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1829
1830                 /* Fake CSR devices with broken commands */
1831                 if (bcdDevice <= 0x100)
1832                         hdev->setup = btusb_setup_csr;
1833         }
1834
1835         if (id->driver_info & BTUSB_SNIFFER) {
1836                 struct usb_device *udev = data->udev;
1837
1838                 /* New sniffer firmware has crippled HCI interface */
1839                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1840                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1841         }
1842
1843         if (id->driver_info & BTUSB_INTEL_BOOT) {
1844                 /* A bug in the bootloader causes that interrupt interface is
1845                  * only enabled after receiving SetInterface(0, AltSetting=0).
1846                  */
1847                 err = usb_set_interface(data->udev, 0, 0);
1848                 if (err < 0) {
1849                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1850                         hci_free_dev(hdev);
1851                         return err;
1852                 }
1853         }
1854
1855         if (data->isoc) {
1856                 err = usb_driver_claim_interface(&btusb_driver,
1857                                                         data->isoc, data);
1858                 if (err < 0) {
1859                         hci_free_dev(hdev);
1860                         return err;
1861                 }
1862         }
1863
1864         err = hci_register_dev(hdev);
1865         if (err < 0) {
1866                 hci_free_dev(hdev);
1867                 return err;
1868         }
1869
1870         usb_set_intfdata(intf, data);
1871
1872         return 0;
1873 }
1874
1875 static void btusb_disconnect(struct usb_interface *intf)
1876 {
1877         struct btusb_data *data = usb_get_intfdata(intf);
1878         struct hci_dev *hdev;
1879
1880         BT_DBG("intf %p", intf);
1881
1882         if (!data)
1883                 return;
1884
1885         hdev = data->hdev;
1886         usb_set_intfdata(data->intf, NULL);
1887
1888         if (data->isoc)
1889                 usb_set_intfdata(data->isoc, NULL);
1890
1891         hci_unregister_dev(hdev);
1892
1893         if (intf == data->isoc)
1894                 usb_driver_release_interface(&btusb_driver, data->intf);
1895         else if (data->isoc)
1896                 usb_driver_release_interface(&btusb_driver, data->isoc);
1897
1898         hci_free_dev(hdev);
1899 }
1900
1901 #ifdef CONFIG_PM
1902 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1903 {
1904         struct btusb_data *data = usb_get_intfdata(intf);
1905
1906         BT_DBG("intf %p", intf);
1907
1908         if (data->suspend_count++)
1909                 return 0;
1910
1911         spin_lock_irq(&data->txlock);
1912         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1913                 set_bit(BTUSB_SUSPENDING, &data->flags);
1914                 spin_unlock_irq(&data->txlock);
1915         } else {
1916                 spin_unlock_irq(&data->txlock);
1917                 data->suspend_count--;
1918                 return -EBUSY;
1919         }
1920
1921         cancel_work_sync(&data->work);
1922
1923         btusb_stop_traffic(data);
1924         usb_kill_anchored_urbs(&data->tx_anchor);
1925
1926         return 0;
1927 }
1928
1929 static void play_deferred(struct btusb_data *data)
1930 {
1931         struct urb *urb;
1932         int err;
1933
1934         while ((urb = usb_get_from_anchor(&data->deferred))) {
1935                 err = usb_submit_urb(urb, GFP_ATOMIC);
1936                 if (err < 0)
1937                         break;
1938
1939                 data->tx_in_flight++;
1940         }
1941         usb_scuttle_anchored_urbs(&data->deferred);
1942 }
1943
1944 static int btusb_resume(struct usb_interface *intf)
1945 {
1946         struct btusb_data *data = usb_get_intfdata(intf);
1947         struct hci_dev *hdev = data->hdev;
1948         int err = 0;
1949
1950         BT_DBG("intf %p", intf);
1951
1952         if (--data->suspend_count)
1953                 return 0;
1954
1955         if (!test_bit(HCI_RUNNING, &hdev->flags))
1956                 goto done;
1957
1958         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1959                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1960                 if (err < 0) {
1961                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1962                         goto failed;
1963                 }
1964         }
1965
1966         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1967                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1968                 if (err < 0) {
1969                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1970                         goto failed;
1971                 }
1972
1973                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1974         }
1975
1976         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1977                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1978                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1979                 else
1980                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1981         }
1982
1983         spin_lock_irq(&data->txlock);
1984         play_deferred(data);
1985         clear_bit(BTUSB_SUSPENDING, &data->flags);
1986         spin_unlock_irq(&data->txlock);
1987         schedule_work(&data->work);
1988
1989         return 0;
1990
1991 failed:
1992         usb_scuttle_anchored_urbs(&data->deferred);
1993 done:
1994         spin_lock_irq(&data->txlock);
1995         clear_bit(BTUSB_SUSPENDING, &data->flags);
1996         spin_unlock_irq(&data->txlock);
1997
1998         return err;
1999 }
2000 #endif
2001
2002 static struct usb_driver btusb_driver = {
2003         .name           = "btusb",
2004         .probe          = btusb_probe,
2005         .disconnect     = btusb_disconnect,
2006 #ifdef CONFIG_PM
2007         .suspend        = btusb_suspend,
2008         .resume         = btusb_resume,
2009 #endif
2010         .id_table       = btusb_table,
2011         .supports_autosuspend = 1,
2012         .disable_hub_initiated_lpm = 1,
2013 };
2014
2015 module_usb_driver(btusb_driver);
2016
2017 module_param(disable_scofix, bool, 0644);
2018 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2019
2020 module_param(force_scofix, bool, 0644);
2021 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2022
2023 module_param(reset, bool, 0644);
2024 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2025
2026 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2027 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2028 MODULE_VERSION(VERSION);
2029 MODULE_LICENSE("GPL");