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 ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52 #define BTUSB_INTEL_BOOT        0x200
  53
  54 static struct usb_device_id btusb_table[] = {
  55         /* Generic Bluetooth USB device */
  56         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  57
  58         /* Apple-specific (Broadcom) devices */
  59         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  60
  61         /* MediaTek MT76x0E */
  62         { USB_DEVICE(0x0e8d, 0x763f) },
  63
  64         /* Broadcom SoftSailing reporting vendor specific */
  65         { USB_DEVICE(0x0a5c, 0x21e1) },
  66
  67         /* Apple MacBookPro 7,1 */
  68         { USB_DEVICE(0x05ac, 0x8213) },
  69
  70         /* Apple iMac11,1 */
  71         { USB_DEVICE(0x05ac, 0x8215) },
  72
  73         /* Apple MacBookPro6,2 */
  74         { USB_DEVICE(0x05ac, 0x8218) },
  75
  76         /* Apple MacBookAir3,1, MacBookAir3,2 */
  77         { USB_DEVICE(0x05ac, 0x821b) },
  78
  79         /* Apple MacBookAir4,1 */
  80         { USB_DEVICE(0x05ac, 0x821f) },
  81
  82         /* Apple MacBookPro8,2 */
  83         { USB_DEVICE(0x05ac, 0x821a) },
  84
  85         /* Apple MacMini5,1 */
  86         { USB_DEVICE(0x05ac, 0x8281) },
  87
  88         /* AVM BlueFRITZ! USB v2.0 */
  89         { USB_DEVICE(0x057c, 0x3800) },
  90
  91         /* Bluetooth Ultraport Module from IBM */
  92         { USB_DEVICE(0x04bf, 0x030a) },
  93
  94         /* ALPS Modules with non-standard id */
  95         { USB_DEVICE(0x044e, 0x3001) },
  96         { USB_DEVICE(0x044e, 0x3002) },
  97
  98         /* Ericsson with non-standard id */
  99         { USB_DEVICE(0x0bdb, 0x1002) },
 100
 101         /* Canyon CN-BTU1 with HID interfaces */
 102         { USB_DEVICE(0x0c10, 0x0000) },
 103
 104         /* Broadcom BCM20702A0 */
 105         { USB_DEVICE(0x0b05, 0x17b5) },
 106         { USB_DEVICE(0x0b05, 0x17cb) },
 107         { USB_DEVICE(0x04ca, 0x2003) },
 108         { USB_DEVICE(0x0489, 0xe042) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110
 111         /* Foxconn - Hon Hai */
 112         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 113
 114         /*Broadcom devices with vendor specific id */
 115         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 116
 117         /* IMC Networks - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 119
 120         /* Intel Bluetooth USB Bootloader (RAM module) */
 121         { USB_DEVICE(0x8087, 0x0a5a),
 122           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 123
 124         { }     /* Terminating entry */
 125 };
 126
 127 MODULE_DEVICE_TABLE(usb, btusb_table);
 128
 129 static struct usb_device_id blacklist_table[] = {
 130         /* CSR BlueCore devices */
 131         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 132
 133         /* Broadcom BCM2033 without firmware */
 134         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros 3011 with sflash firmware */
 137         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 138         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 143
 144         /* Atheros AR9285 Malbec with sflash firmware */
 145         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 146
 147         /* Atheros 3012 with sflash firmware */
 148         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x13d3, 0x3375), .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(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 174
 175         /* Atheros AR5BBU12 with sflash firmware */
 176         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 177
 178         /* Atheros AR5BBU12 with sflash firmware */
 179         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 181
 182         /* Broadcom BCM2035 */
 183         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 184         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 186
 187         /* Broadcom BCM2045 */
 188         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* IBM/Lenovo ThinkPad with Broadcom chip */
 192         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* HP laptop with Broadcom chip */
 196         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* Dell laptop with Broadcom chip */
 199         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Dell Wireless 370 and 410 devices */
 202         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 203         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Belkin F8T012 and F8T013 devices */
 206         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 207         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Asus WL-BTD202 device */
 210         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Kensington Bluetooth USB adapter */
 213         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* RTX Telecom based adapters with buggy SCO support */
 216         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 217         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 218
 219         /* CONWISE Technology based adapters with buggy SCO support */
 220         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 221
 222         /* Digianswer devices */
 223         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 224         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 225
 226         /* CSR BlueCore Bluetooth Sniffer */
 227         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 228
 229         /* Frontline ComProbe Bluetooth Sniffer */
 230         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 231
 232         /* Intel Bluetooth device */
 233         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 234
 235         { }     /* Terminating entry */
 236 };
 237
 238 #define BTUSB_MAX_ISOC_FRAMES   10
 239
 240 #define BTUSB_INTR_RUNNING      0
 241 #define BTUSB_BULK_RUNNING      1
 242 #define BTUSB_ISOC_RUNNING      2
 243 #define BTUSB_SUSPENDING        3
 244 #define BTUSB_DID_ISO_RESUME    4
 245
 246 struct btusb_data {
 247         struct hci_dev       *hdev;
 248         struct usb_device    *udev;
 249         struct usb_interface *intf;
 250         struct usb_interface *isoc;
 251
 252         spinlock_t lock;
 253
 254         unsigned long flags;
 255
 256         struct work_struct work;
 257         struct work_struct waker;
 258
 259         struct usb_anchor tx_anchor;
 260         struct usb_anchor intr_anchor;
 261         struct usb_anchor bulk_anchor;
 262         struct usb_anchor isoc_anchor;
 263         struct usb_anchor deferred;
 264         int tx_in_flight;
 265         spinlock_t txlock;
 266
 267         struct usb_endpoint_descriptor *intr_ep;
 268         struct usb_endpoint_descriptor *bulk_tx_ep;
 269         struct usb_endpoint_descriptor *bulk_rx_ep;
 270         struct usb_endpoint_descriptor *isoc_tx_ep;
 271         struct usb_endpoint_descriptor *isoc_rx_ep;
 272
 273         __u8 cmdreq_type;
 274
 275         unsigned int sco_num;
 276         int isoc_altsetting;
 277         int suspend_count;
 278 };
 279
 280 static int inc_tx(struct btusb_data *data)
 281 {
 282         unsigned long flags;
 283         int rv;
 284
 285         spin_lock_irqsave(&data->txlock, flags);
 286         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 287         if (!rv)
 288                 data->tx_in_flight++;
 289         spin_unlock_irqrestore(&data->txlock, flags);
 290
 291         return rv;
 292 }
 293
 294 static void btusb_intr_complete(struct urb *urb)
 295 {
 296         struct hci_dev *hdev = urb->context;
 297         struct btusb_data *data = hci_get_drvdata(hdev);
 298         int err;
 299
 300         BT_DBG("%s urb %p status %d count %d", hdev->name,
 301                                         urb, urb->status, urb->actual_length);
 302
 303         if (!test_bit(HCI_RUNNING, &hdev->flags))
 304                 return;
 305
 306         if (urb->status == 0) {
 307                 hdev->stat.byte_rx += urb->actual_length;
 308
 309                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 310                                                 urb->transfer_buffer,
 311                                                 urb->actual_length) < 0) {
 312                         BT_ERR("%s corrupted event packet", hdev->name);
 313                         hdev->stat.err_rx++;
 314                 }
 315         } else if (urb->status == -ENOENT) {
 316                 /* Avoid suspend failed when usb_kill_urb */
 317                 return;
 318         }
 319
 320         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 321                 return;
 322
 323         usb_mark_last_busy(data->udev);
 324         usb_anchor_urb(urb, &data->intr_anchor);
 325
 326         err = usb_submit_urb(urb, GFP_ATOMIC);
 327         if (err < 0) {
 328                 /* -EPERM: urb is being killed;
 329                  * -ENODEV: device got disconnected */
 330                 if (err != -EPERM && err != -ENODEV)
 331                         BT_ERR("%s urb %p failed to resubmit (%d)",
 332                                                 hdev->name, urb, -err);
 333                 usb_unanchor_urb(urb);
 334         }
 335 }
 336
 337 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 338 {
 339         struct btusb_data *data = hci_get_drvdata(hdev);
 340         struct urb *urb;
 341         unsigned char *buf;
 342         unsigned int pipe;
 343         int err, size;
 344
 345         BT_DBG("%s", hdev->name);
 346
 347         if (!data->intr_ep)
 348                 return -ENODEV;
 349
 350         urb = usb_alloc_urb(0, mem_flags);
 351         if (!urb)
 352                 return -ENOMEM;
 353
 354         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 355
 356         buf = kmalloc(size, mem_flags);
 357         if (!buf) {
 358                 usb_free_urb(urb);
 359                 return -ENOMEM;
 360         }
 361
 362         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 363
 364         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 365                                                 btusb_intr_complete, hdev,
 366                                                 data->intr_ep->bInterval);
 367
 368         urb->transfer_flags |= URB_FREE_BUFFER;
 369
 370         usb_anchor_urb(urb, &data->intr_anchor);
 371
 372         err = usb_submit_urb(urb, mem_flags);
 373         if (err < 0) {
 374                 if (err != -EPERM && err != -ENODEV)
 375                         BT_ERR("%s urb %p submission failed (%d)",
 376                                                 hdev->name, urb, -err);
 377                 usb_unanchor_urb(urb);
 378         }
 379
 380         usb_free_urb(urb);
 381
 382         return err;
 383 }
 384
 385 static void btusb_bulk_complete(struct urb *urb)
 386 {
 387         struct hci_dev *hdev = urb->context;
 388         struct btusb_data *data = hci_get_drvdata(hdev);
 389         int err;
 390
 391         BT_DBG("%s urb %p status %d count %d", hdev->name,
 392                                         urb, urb->status, urb->actual_length);
 393
 394         if (!test_bit(HCI_RUNNING, &hdev->flags))
 395                 return;
 396
 397         if (urb->status == 0) {
 398                 hdev->stat.byte_rx += urb->actual_length;
 399
 400                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 401                                                 urb->transfer_buffer,
 402                                                 urb->actual_length) < 0) {
 403                         BT_ERR("%s corrupted ACL packet", hdev->name);
 404                         hdev->stat.err_rx++;
 405                 }
 406         } else if (urb->status == -ENOENT) {
 407                 /* Avoid suspend failed when usb_kill_urb */
 408                 return;
 409         }
 410
 411         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 412                 return;
 413
 414         usb_anchor_urb(urb, &data->bulk_anchor);
 415         usb_mark_last_busy(data->udev);
 416
 417         err = usb_submit_urb(urb, GFP_ATOMIC);
 418         if (err < 0) {
 419                 /* -EPERM: urb is being killed;
 420                  * -ENODEV: device got disconnected */
 421                 if (err != -EPERM && err != -ENODEV)
 422                         BT_ERR("%s urb %p failed to resubmit (%d)",
 423                                                 hdev->name, urb, -err);
 424                 usb_unanchor_urb(urb);
 425         }
 426 }
 427
 428 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 429 {
 430         struct btusb_data *data = hci_get_drvdata(hdev);
 431         struct urb *urb;
 432         unsigned char *buf;
 433         unsigned int pipe;
 434         int err, size = HCI_MAX_FRAME_SIZE;
 435
 436         BT_DBG("%s", hdev->name);
 437
 438         if (!data->bulk_rx_ep)
 439                 return -ENODEV;
 440
 441         urb = usb_alloc_urb(0, mem_flags);
 442         if (!urb)
 443                 return -ENOMEM;
 444
 445         buf = kmalloc(size, mem_flags);
 446         if (!buf) {
 447                 usb_free_urb(urb);
 448                 return -ENOMEM;
 449         }
 450
 451         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 452
 453         usb_fill_bulk_urb(urb, data->udev, pipe,
 454                                         buf, size, btusb_bulk_complete, hdev);
 455
 456         urb->transfer_flags |= URB_FREE_BUFFER;
 457
 458         usb_mark_last_busy(data->udev);
 459         usb_anchor_urb(urb, &data->bulk_anchor);
 460
 461         err = usb_submit_urb(urb, mem_flags);
 462         if (err < 0) {
 463                 if (err != -EPERM && err != -ENODEV)
 464                         BT_ERR("%s urb %p submission failed (%d)",
 465                                                 hdev->name, urb, -err);
 466                 usb_unanchor_urb(urb);
 467         }
 468
 469         usb_free_urb(urb);
 470
 471         return err;
 472 }
 473
 474 static void btusb_isoc_complete(struct urb *urb)
 475 {
 476         struct hci_dev *hdev = urb->context;
 477         struct btusb_data *data = hci_get_drvdata(hdev);
 478         int i, err;
 479
 480         BT_DBG("%s urb %p status %d count %d", hdev->name,
 481                                         urb, urb->status, urb->actual_length);
 482
 483         if (!test_bit(HCI_RUNNING, &hdev->flags))
 484                 return;
 485
 486         if (urb->status == 0) {
 487                 for (i = 0; i < urb->number_of_packets; i++) {
 488                         unsigned int offset = urb->iso_frame_desc[i].offset;
 489                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 490
 491                         if (urb->iso_frame_desc[i].status)
 492                                 continue;
 493
 494                         hdev->stat.byte_rx += length;
 495
 496                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 497                                                 urb->transfer_buffer + offset,
 498                                                                 length) < 0) {
 499                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 500                                 hdev->stat.err_rx++;
 501                         }
 502                 }
 503         } else if (urb->status == -ENOENT) {
 504                 /* Avoid suspend failed when usb_kill_urb */
 505                 return;
 506         }
 507
 508         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 509                 return;
 510
 511         usb_anchor_urb(urb, &data->isoc_anchor);
 512
 513         err = usb_submit_urb(urb, GFP_ATOMIC);
 514         if (err < 0) {
 515                 /* -EPERM: urb is being killed;
 516                  * -ENODEV: device got disconnected */
 517                 if (err != -EPERM && err != -ENODEV)
 518                         BT_ERR("%s urb %p failed to resubmit (%d)",
 519                                                 hdev->name, urb, -err);
 520                 usb_unanchor_urb(urb);
 521         }
 522 }
 523
 524 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 525 {
 526         int i, offset = 0;
 527
 528         BT_DBG("len %d mtu %d", len, mtu);
 529
 530         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 531                                         i++, offset += mtu, len -= mtu) {
 532                 urb->iso_frame_desc[i].offset = offset;
 533                 urb->iso_frame_desc[i].length = mtu;
 534         }
 535
 536         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 537                 urb->iso_frame_desc[i].offset = offset;
 538                 urb->iso_frame_desc[i].length = len;
 539                 i++;
 540         }
 541
 542         urb->number_of_packets = i;
 543 }
 544
 545 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 546 {
 547         struct btusb_data *data = hci_get_drvdata(hdev);
 548         struct urb *urb;
 549         unsigned char *buf;
 550         unsigned int pipe;
 551         int err, size;
 552
 553         BT_DBG("%s", hdev->name);
 554
 555         if (!data->isoc_rx_ep)
 556                 return -ENODEV;
 557
 558         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 559         if (!urb)
 560                 return -ENOMEM;
 561
 562         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 563                                                 BTUSB_MAX_ISOC_FRAMES;
 564
 565         buf = kmalloc(size, mem_flags);
 566         if (!buf) {
 567                 usb_free_urb(urb);
 568                 return -ENOMEM;
 569         }
 570
 571         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 572
 573         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 574                                 hdev, data->isoc_rx_ep->bInterval);
 575
 576         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 577
 578         __fill_isoc_descriptor(urb, size,
 579                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 580
 581         usb_anchor_urb(urb, &data->isoc_anchor);
 582
 583         err = usb_submit_urb(urb, mem_flags);
 584         if (err < 0) {
 585                 if (err != -EPERM && err != -ENODEV)
 586                         BT_ERR("%s urb %p submission failed (%d)",
 587                                                 hdev->name, urb, -err);
 588                 usb_unanchor_urb(urb);
 589         }
 590
 591         usb_free_urb(urb);
 592
 593         return err;
 594 }
 595
 596 static void btusb_tx_complete(struct urb *urb)
 597 {
 598         struct sk_buff *skb = urb->context;
 599         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 600         struct btusb_data *data = hci_get_drvdata(hdev);
 601
 602         BT_DBG("%s urb %p status %d count %d", hdev->name,
 603                                         urb, urb->status, urb->actual_length);
 604
 605         if (!test_bit(HCI_RUNNING, &hdev->flags))
 606                 goto done;
 607
 608         if (!urb->status)
 609                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 610         else
 611                 hdev->stat.err_tx++;
 612
 613 done:
 614         spin_lock(&data->txlock);
 615         data->tx_in_flight--;
 616         spin_unlock(&data->txlock);
 617
 618         kfree(urb->setup_packet);
 619
 620         kfree_skb(skb);
 621 }
 622
 623 static void btusb_isoc_tx_complete(struct urb *urb)
 624 {
 625         struct sk_buff *skb = urb->context;
 626         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 627
 628         BT_DBG("%s urb %p status %d count %d", hdev->name,
 629                                         urb, urb->status, urb->actual_length);
 630
 631         if (!test_bit(HCI_RUNNING, &hdev->flags))
 632                 goto done;
 633
 634         if (!urb->status)
 635                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 636         else
 637                 hdev->stat.err_tx++;
 638
 639 done:
 640         kfree(urb->setup_packet);
 641
 642         kfree_skb(skb);
 643 }
 644
 645 static int btusb_open(struct hci_dev *hdev)
 646 {
 647         struct btusb_data *data = hci_get_drvdata(hdev);
 648         int err;
 649
 650         BT_DBG("%s", hdev->name);
 651
 652         err = usb_autopm_get_interface(data->intf);
 653         if (err < 0)
 654                 return err;
 655
 656         data->intf->needs_remote_wakeup = 1;
 657
 658         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 659                 goto done;
 660
 661         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 662                 goto done;
 663
 664         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 665         if (err < 0)
 666                 goto failed;
 667
 668         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 669         if (err < 0) {
 670                 usb_kill_anchored_urbs(&data->intr_anchor);
 671                 goto failed;
 672         }
 673
 674         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 675         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 676
 677 done:
 678         usb_autopm_put_interface(data->intf);
 679         return 0;
 680
 681 failed:
 682         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 683         clear_bit(HCI_RUNNING, &hdev->flags);
 684         usb_autopm_put_interface(data->intf);
 685         return err;
 686 }
 687
 688 static void btusb_stop_traffic(struct btusb_data *data)
 689 {
 690         usb_kill_anchored_urbs(&data->intr_anchor);
 691         usb_kill_anchored_urbs(&data->bulk_anchor);
 692         usb_kill_anchored_urbs(&data->isoc_anchor);
 693 }
 694
 695 static int btusb_close(struct hci_dev *hdev)
 696 {
 697         struct btusb_data *data = hci_get_drvdata(hdev);
 698         int err;
 699
 700         BT_DBG("%s", hdev->name);
 701
 702         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 703                 return 0;
 704
 705         cancel_work_sync(&data->work);
 706         cancel_work_sync(&data->waker);
 707
 708         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 709         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 710         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 711
 712         btusb_stop_traffic(data);
 713         err = usb_autopm_get_interface(data->intf);
 714         if (err < 0)
 715                 goto failed;
 716
 717         data->intf->needs_remote_wakeup = 0;
 718         usb_autopm_put_interface(data->intf);
 719
 720 failed:
 721         usb_scuttle_anchored_urbs(&data->deferred);
 722         return 0;
 723 }
 724
 725 static int btusb_flush(struct hci_dev *hdev)
 726 {
 727         struct btusb_data *data = hci_get_drvdata(hdev);
 728
 729         BT_DBG("%s", hdev->name);
 730
 731         usb_kill_anchored_urbs(&data->tx_anchor);
 732
 733         return 0;
 734 }
 735
 736 static int btusb_send_frame(struct sk_buff *skb)
 737 {
 738         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 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         switch (bt_cb(skb)->pkt_type) {
 751         case HCI_COMMAND_PKT:
 752                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 753                 if (!urb)
 754                         return -ENOMEM;
 755
 756                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 757                 if (!dr) {
 758                         usb_free_urb(urb);
 759                         return -ENOMEM;
 760                 }
 761
 762                 dr->bRequestType = data->cmdreq_type;
 763                 dr->bRequest     = 0;
 764                 dr->wIndex       = 0;
 765                 dr->wValue       = 0;
 766                 dr->wLength      = __cpu_to_le16(skb->len);
 767
 768                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 769
 770                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 771                                 skb->data, skb->len, btusb_tx_complete, skb);
 772
 773                 hdev->stat.cmd_tx++;
 774                 break;
 775
 776         case HCI_ACLDATA_PKT:
 777                 if (!data->bulk_tx_ep)
 778                         return -ENODEV;
 779
 780                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 781                 if (!urb)
 782                         return -ENOMEM;
 783
 784                 pipe = usb_sndbulkpipe(data->udev,
 785                                         data->bulk_tx_ep->bEndpointAddress);
 786
 787                 usb_fill_bulk_urb(urb, data->udev, pipe,
 788                                 skb->data, skb->len, btusb_tx_complete, skb);
 789
 790                 hdev->stat.acl_tx++;
 791                 break;
 792
 793         case HCI_SCODATA_PKT:
 794                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 795                         return -ENODEV;
 796
 797                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 798                 if (!urb)
 799                         return -ENOMEM;
 800
 801                 pipe = usb_sndisocpipe(data->udev,
 802                                         data->isoc_tx_ep->bEndpointAddress);
 803
 804                 usb_fill_int_urb(urb, data->udev, pipe,
 805                                 skb->data, skb->len, btusb_isoc_tx_complete,
 806                                 skb, data->isoc_tx_ep->bInterval);
 807
 808                 urb->transfer_flags  = URB_ISO_ASAP;
 809
 810                 __fill_isoc_descriptor(urb, skb->len,
 811                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 812
 813                 hdev->stat.sco_tx++;
 814                 goto skip_waking;
 815
 816         default:
 817                 return -EILSEQ;
 818         }
 819
 820         err = inc_tx(data);
 821         if (err) {
 822                 usb_anchor_urb(urb, &data->deferred);
 823                 schedule_work(&data->waker);
 824                 err = 0;
 825                 goto done;
 826         }
 827
 828 skip_waking:
 829         usb_anchor_urb(urb, &data->tx_anchor);
 830
 831         err = usb_submit_urb(urb, GFP_ATOMIC);
 832         if (err < 0) {
 833                 if (err != -EPERM && err != -ENODEV)
 834                         BT_ERR("%s urb %p submission failed (%d)",
 835                                                 hdev->name, urb, -err);
 836                 kfree(urb->setup_packet);
 837                 usb_unanchor_urb(urb);
 838         } else {
 839                 usb_mark_last_busy(data->udev);
 840         }
 841
 842 done:
 843         usb_free_urb(urb);
 844         return err;
 845 }
 846
 847 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 848 {
 849         struct btusb_data *data = hci_get_drvdata(hdev);
 850
 851         BT_DBG("%s evt %d", hdev->name, evt);
 852
 853         if (hdev->conn_hash.sco_num != data->sco_num) {
 854                 data->sco_num = hdev->conn_hash.sco_num;
 855                 schedule_work(&data->work);
 856         }
 857 }
 858
 859 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 860 {
 861         struct btusb_data *data = hci_get_drvdata(hdev);
 862         struct usb_interface *intf = data->isoc;
 863         struct usb_endpoint_descriptor *ep_desc;
 864         int i, err;
 865
 866         if (!data->isoc)
 867                 return -ENODEV;
 868
 869         err = usb_set_interface(data->udev, 1, altsetting);
 870         if (err < 0) {
 871                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 872                 return err;
 873         }
 874
 875         data->isoc_altsetting = altsetting;
 876
 877         data->isoc_tx_ep = NULL;
 878         data->isoc_rx_ep = NULL;
 879
 880         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 881                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 882
 883                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 884                         data->isoc_tx_ep = ep_desc;
 885                         continue;
 886                 }
 887
 888                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 889                         data->isoc_rx_ep = ep_desc;
 890                         continue;
 891                 }
 892         }
 893
 894         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 895                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 896                 return -ENODEV;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static void btusb_work(struct work_struct *work)
 903 {
 904         struct btusb_data *data = container_of(work, struct btusb_data, work);
 905         struct hci_dev *hdev = data->hdev;
 906         int new_alts;
 907         int err;
 908
 909         if (hdev->conn_hash.sco_num > 0) {
 910                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 911                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 912                         if (err < 0) {
 913                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 914                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 915                                 return;
 916                         }
 917
 918                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 919                 }
 920
 921                 if (hdev->voice_setting & 0x0020) {
 922                         static const int alts[3] = { 2, 4, 5 };
 923                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 924                 } else {
 925                         new_alts = hdev->conn_hash.sco_num;
 926                 }
 927
 928                 if (data->isoc_altsetting != new_alts) {
 929                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 930                         usb_kill_anchored_urbs(&data->isoc_anchor);
 931
 932                         if (__set_isoc_interface(hdev, new_alts) < 0)
 933                                 return;
 934                 }
 935
 936                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 937                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 938                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939                         else
 940                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 941                 }
 942         } else {
 943                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 944                 usb_kill_anchored_urbs(&data->isoc_anchor);
 945
 946                 __set_isoc_interface(hdev, 0);
 947                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 948                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 949         }
 950 }
 951
 952 static void btusb_waker(struct work_struct *work)
 953 {
 954         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 955         int err;
 956
 957         err = usb_autopm_get_interface(data->intf);
 958         if (err < 0)
 959                 return;
 960
 961         usb_autopm_put_interface(data->intf);
 962 }
 963
 964 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 965 {
 966         struct sk_buff *skb;
 967         u8 val = 0x00;
 968
 969         BT_DBG("%s", hdev->name);
 970
 971         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 972         if (IS_ERR(skb))
 973                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 974         else
 975                 kfree_skb(skb);
 976
 977         return 0;
 978 }
 979
 980 struct intel_version {
 981         u8 status;
 982         u8 hw_platform;
 983         u8 hw_variant;
 984         u8 hw_revision;
 985         u8 fw_variant;
 986         u8 fw_revision;
 987         u8 fw_build_num;
 988         u8 fw_build_ww;
 989         u8 fw_build_yy;
 990         u8 fw_patch_num;
 991 } __packed;
 992
 993 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 994                                                 struct intel_version *ver)
 995 {
 996         const struct firmware *fw;
 997         char fwname[64];
 998         int ret;
 999
1000         snprintf(fwname, sizeof(fwname),
1001                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1002                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1003                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1004                  ver->fw_build_ww, ver->fw_build_yy);
1005
1006         ret = request_firmware(&fw, fwname, &hdev->dev);
1007         if (ret < 0) {
1008                 if (ret == -EINVAL) {
1009                         BT_ERR("%s Intel firmware file request failed (%d)",
1010                                hdev->name, ret);
1011                         return NULL;
1012                 }
1013
1014                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1015                        hdev->name, fwname, ret);
1016
1017                 /* If the correct firmware patch file is not found, use the
1018                  * default firmware patch file instead
1019                  */
1020                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1021                          ver->hw_platform, ver->hw_variant);
1022                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1023                         BT_ERR("%s failed to open default Intel fw file: %s",
1024                                hdev->name, fwname);
1025                         return NULL;
1026                 }
1027         }
1028
1029         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1030
1031         return fw;
1032 }
1033
1034 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1035                                       const struct firmware *fw,
1036                                       const u8 **fw_ptr, int *disable_patch)
1037 {
1038         struct sk_buff *skb;
1039         struct hci_command_hdr *cmd;
1040         const u8 *cmd_param;
1041         struct hci_event_hdr *evt = NULL;
1042         const u8 *evt_param = NULL;
1043         int remain = fw->size - (*fw_ptr - fw->data);
1044
1045         /* The first byte indicates the types of the patch command or event.
1046          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1047          * in the current firmware buffer doesn't start with 0x01 or
1048          * the size of remain buffer is smaller than HCI command header,
1049          * the firmware file is corrupted and it should stop the patching
1050          * process.
1051          */
1052         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1053                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1054                 return -EINVAL;
1055         }
1056         (*fw_ptr)++;
1057         remain--;
1058
1059         cmd = (struct hci_command_hdr *)(*fw_ptr);
1060         *fw_ptr += sizeof(*cmd);
1061         remain -= sizeof(*cmd);
1062
1063         /* Ensure that the remain firmware data is long enough than the length
1064          * of command parameter. If not, the firmware file is corrupted.
1065          */
1066         if (remain < cmd->plen) {
1067                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1068                 return -EFAULT;
1069         }
1070
1071         /* If there is a command that loads a patch in the firmware
1072          * file, then enable the patch upon success, otherwise just
1073          * disable the manufacturer mode, for example patch activation
1074          * is not required when the default firmware patch file is used
1075          * because there are no patch data to load.
1076          */
1077         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1078                 *disable_patch = 0;
1079
1080         cmd_param = *fw_ptr;
1081         *fw_ptr += cmd->plen;
1082         remain -= cmd->plen;
1083
1084         /* This reads the expected events when the above command is sent to the
1085          * device. Some vendor commands expects more than one events, for
1086          * example command status event followed by vendor specific event.
1087          * For this case, it only keeps the last expected event. so the command
1088          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1089          * last expected event.
1090          */
1091         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1092                 (*fw_ptr)++;
1093                 remain--;
1094
1095                 evt = (struct hci_event_hdr *)(*fw_ptr);
1096                 *fw_ptr += sizeof(*evt);
1097                 remain -= sizeof(*evt);
1098
1099                 if (remain < evt->plen) {
1100                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1101                                hdev->name);
1102                         return -EFAULT;
1103                 }
1104
1105                 evt_param = *fw_ptr;
1106                 *fw_ptr += evt->plen;
1107                 remain -= evt->plen;
1108         }
1109
1110         /* Every HCI commands in the firmware file has its correspond event.
1111          * If event is not found or remain is smaller than zero, the firmware
1112          * file is corrupted.
1113          */
1114         if (!evt || !evt_param || remain < 0) {
1115                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1116                 return -EFAULT;
1117         }
1118
1119         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1120                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1121         if (IS_ERR(skb)) {
1122                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1123                        hdev->name, cmd->opcode, PTR_ERR(skb));
1124                 return PTR_ERR(skb);
1125         }
1126
1127         /* It ensures that the returned event matches the event data read from
1128          * the firmware file. At fist, it checks the length and then
1129          * the contents of the event.
1130          */
1131         if (skb->len != evt->plen) {
1132                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1133                        le16_to_cpu(cmd->opcode));
1134                 kfree_skb(skb);
1135                 return -EFAULT;
1136         }
1137
1138         if (memcmp(skb->data, evt_param, evt->plen)) {
1139                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1140                        hdev->name, le16_to_cpu(cmd->opcode));
1141                 kfree_skb(skb);
1142                 return -EFAULT;
1143         }
1144         kfree_skb(skb);
1145
1146         return 0;
1147 }
1148
1149 static int btusb_setup_intel(struct hci_dev *hdev)
1150 {
1151         struct sk_buff *skb;
1152         const struct firmware *fw;
1153         const u8 *fw_ptr;
1154         int disable_patch;
1155         struct intel_version *ver;
1156
1157         const u8 mfg_enable[] = { 0x01, 0x00 };
1158         const u8 mfg_disable[] = { 0x00, 0x00 };
1159         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1160         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1161
1162         BT_DBG("%s", hdev->name);
1163
1164         /* The controller has a bug with the first HCI command sent to it
1165          * returning number of completed commands as zero. This would stall the
1166          * command processing in the Bluetooth core.
1167          *
1168          * As a workaround, send HCI Reset command first which will reset the
1169          * number of completed commands and allow normal command processing
1170          * from now on.
1171          */
1172         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1173         if (IS_ERR(skb)) {
1174                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1175                        hdev->name, PTR_ERR(skb));
1176                 return PTR_ERR(skb);
1177         }
1178         kfree_skb(skb);
1179
1180         /* Read Intel specific controller version first to allow selection of
1181          * which firmware file to load.
1182          *
1183          * The returned information are hardware variant and revision plus
1184          * firmware variant, revision and build number.
1185          */
1186         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1187         if (IS_ERR(skb)) {
1188                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1189                        hdev->name, PTR_ERR(skb));
1190                 return PTR_ERR(skb);
1191         }
1192
1193         if (skb->len != sizeof(*ver)) {
1194                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1195                 kfree_skb(skb);
1196                 return -EIO;
1197         }
1198
1199         ver = (struct intel_version *)skb->data;
1200         if (ver->status) {
1201                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1202                        ver->status);
1203                 kfree_skb(skb);
1204                 return -bt_to_errno(ver->status);
1205         }
1206
1207         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1208                 hdev->name, ver->hw_platform, ver->hw_variant,
1209                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1210                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1211                 ver->fw_patch_num);
1212
1213         /* fw_patch_num indicates the version of patch the device currently
1214          * have. If there is no patch data in the device, it is always 0x00.
1215          * So, if it is other than 0x00, no need to patch the deivce again.
1216          */
1217         if (ver->fw_patch_num) {
1218                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1219                         hdev->name, ver->fw_patch_num);
1220                 kfree_skb(skb);
1221                 return 0;
1222         }
1223
1224         /* Opens the firmware patch file based on the firmware version read
1225          * from the controller. If it fails to open the matching firmware
1226          * patch file, it tries to open the default firmware patch file.
1227          * If no patch file is found, allow the device to operate without
1228          * a patch.
1229          */
1230         fw = btusb_setup_intel_get_fw(hdev, ver);
1231         if (!fw) {
1232                 kfree_skb(skb);
1233                 return 0;
1234         }
1235         fw_ptr = fw->data;
1236
1237         kfree_skb(skb);
1238
1239         /* This Intel specific command enables the manufacturer mode of the
1240          * controller.
1241          *
1242          * Only while this mode is enabled, the driver can download the
1243          * firmware patch data and configuration parameters.
1244          */
1245         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1246         if (IS_ERR(skb)) {
1247                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1248                        hdev->name, PTR_ERR(skb));
1249                 release_firmware(fw);
1250                 return PTR_ERR(skb);
1251         }
1252
1253         if (skb->data[0]) {
1254                 u8 evt_status = skb->data[0];
1255                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1256                        hdev->name, evt_status);
1257                 kfree_skb(skb);
1258                 release_firmware(fw);
1259                 return -bt_to_errno(evt_status);
1260         }
1261         kfree_skb(skb);
1262
1263         disable_patch = 1;
1264
1265         /* The firmware data file consists of list of Intel specific HCI
1266          * commands and its expected events. The first byte indicates the
1267          * type of the message, either HCI command or HCI event.
1268          *
1269          * It reads the command and its expected event from the firmware file,
1270          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1271          * the returned event is compared with the event read from the firmware
1272          * file and it will continue until all the messages are downloaded to
1273          * the controller.
1274          *
1275          * Once the firmware patching is completed successfully,
1276          * the manufacturer mode is disabled with reset and activating the
1277          * downloaded patch.
1278          *
1279          * If the firmware patching fails, the manufacturer mode is
1280          * disabled with reset and deactivating the patch.
1281          *
1282          * If the default patch file is used, no reset is done when disabling
1283          * the manufacturer.
1284          */
1285         while (fw->size > fw_ptr - fw->data) {
1286                 int ret;
1287
1288                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1289                                                  &disable_patch);
1290                 if (ret < 0)
1291                         goto exit_mfg_deactivate;
1292         }
1293
1294         release_firmware(fw);
1295
1296         if (disable_patch)
1297                 goto exit_mfg_disable;
1298
1299         /* Patching completed successfully and disable the manufacturer mode
1300          * with reset and activate the downloaded firmware patches.
1301          */
1302         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1303                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1304         if (IS_ERR(skb)) {
1305                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1306                        hdev->name, PTR_ERR(skb));
1307                 return PTR_ERR(skb);
1308         }
1309         kfree_skb(skb);
1310
1311         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1312                 hdev->name);
1313
1314         return 0;
1315
1316 exit_mfg_disable:
1317         /* Disable the manufacturer mode without reset */
1318         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1319                              HCI_INIT_TIMEOUT);
1320         if (IS_ERR(skb)) {
1321                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1322                        hdev->name, PTR_ERR(skb));
1323                 return PTR_ERR(skb);
1324         }
1325         kfree_skb(skb);
1326
1327         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1328         return 0;
1329
1330 exit_mfg_deactivate:
1331         release_firmware(fw);
1332
1333         /* Patching failed. Disable the manufacturer mode with reset and
1334          * deactivate the downloaded firmware patches.
1335          */
1336         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1337                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1338         if (IS_ERR(skb)) {
1339                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1340                        hdev->name, PTR_ERR(skb));
1341                 return PTR_ERR(skb);
1342         }
1343         kfree_skb(skb);
1344
1345         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1346                 hdev->name);
1347
1348         return 0;
1349 }
1350
1351 static int btusb_probe(struct usb_interface *intf,
1352                                 const struct usb_device_id *id)
1353 {
1354         struct usb_endpoint_descriptor *ep_desc;
1355         struct btusb_data *data;
1356         struct hci_dev *hdev;
1357         int i, err;
1358
1359         BT_DBG("intf %p id %p", intf, id);
1360
1361         /* interface numbers are hardcoded in the spec */
1362         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1363                 return -ENODEV;
1364
1365         if (!id->driver_info) {
1366                 const struct usb_device_id *match;
1367                 match = usb_match_id(intf, blacklist_table);
1368                 if (match)
1369                         id = match;
1370         }
1371
1372         if (id->driver_info == BTUSB_IGNORE)
1373                 return -ENODEV;
1374
1375         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1376                 return -ENODEV;
1377
1378         if (ignore_csr && id->driver_info & BTUSB_CSR)
1379                 return -ENODEV;
1380
1381         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1382                 return -ENODEV;
1383
1384         if (id->driver_info & BTUSB_ATH3012) {
1385                 struct usb_device *udev = interface_to_usbdev(intf);
1386
1387                 /* Old firmware would otherwise let ath3k driver load
1388                  * patch and sysconfig files */
1389                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1390                         return -ENODEV;
1391         }
1392
1393         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1394         if (!data)
1395                 return -ENOMEM;
1396
1397         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1398                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1399
1400                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1401                         data->intr_ep = ep_desc;
1402                         continue;
1403                 }
1404
1405                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1406                         data->bulk_tx_ep = ep_desc;
1407                         continue;
1408                 }
1409
1410                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1411                         data->bulk_rx_ep = ep_desc;
1412                         continue;
1413                 }
1414         }
1415
1416         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1417                 return -ENODEV;
1418
1419         data->cmdreq_type = USB_TYPE_CLASS;
1420
1421         data->udev = interface_to_usbdev(intf);
1422         data->intf = intf;
1423
1424         spin_lock_init(&data->lock);
1425
1426         INIT_WORK(&data->work, btusb_work);
1427         INIT_WORK(&data->waker, btusb_waker);
1428         spin_lock_init(&data->txlock);
1429
1430         init_usb_anchor(&data->tx_anchor);
1431         init_usb_anchor(&data->intr_anchor);
1432         init_usb_anchor(&data->bulk_anchor);
1433         init_usb_anchor(&data->isoc_anchor);
1434         init_usb_anchor(&data->deferred);
1435
1436         hdev = hci_alloc_dev();
1437         if (!hdev)
1438                 return -ENOMEM;
1439
1440         hdev->bus = HCI_USB;
1441         hci_set_drvdata(hdev, data);
1442
1443         data->hdev = hdev;
1444
1445         SET_HCIDEV_DEV(hdev, &intf->dev);
1446
1447         hdev->open   = btusb_open;
1448         hdev->close  = btusb_close;
1449         hdev->flush  = btusb_flush;
1450         hdev->send   = btusb_send_frame;
1451         hdev->notify = btusb_notify;
1452
1453         if (id->driver_info & BTUSB_BCM92035)
1454                 hdev->setup = btusb_setup_bcm92035;
1455
1456         if (id->driver_info & BTUSB_INTEL)
1457                 hdev->setup = btusb_setup_intel;
1458
1459         if (id->driver_info & BTUSB_INTEL_BOOT)
1460                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1461
1462         /* Interface numbers are hardcoded in the specification */
1463         data->isoc = usb_ifnum_to_if(data->udev, 1);
1464
1465         if (!reset)
1466                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1467
1468         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1469                 if (!disable_scofix)
1470                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1471         }
1472
1473         if (id->driver_info & BTUSB_BROKEN_ISOC)
1474                 data->isoc = NULL;
1475
1476         if (id->driver_info & BTUSB_DIGIANSWER) {
1477                 data->cmdreq_type = USB_TYPE_VENDOR;
1478                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1479         }
1480
1481         if (id->driver_info & BTUSB_CSR) {
1482                 struct usb_device *udev = data->udev;
1483
1484                 /* Old firmware would otherwise execute USB reset */
1485                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1486                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1487         }
1488
1489         if (id->driver_info & BTUSB_SNIFFER) {
1490                 struct usb_device *udev = data->udev;
1491
1492                 /* New sniffer firmware has crippled HCI interface */
1493                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1494                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1495
1496                 data->isoc = NULL;
1497         }
1498
1499         if (data->isoc) {
1500                 err = usb_driver_claim_interface(&btusb_driver,
1501                                                         data->isoc, data);
1502                 if (err < 0) {
1503                         hci_free_dev(hdev);
1504                         return err;
1505                 }
1506         }
1507
1508         err = hci_register_dev(hdev);
1509         if (err < 0) {
1510                 hci_free_dev(hdev);
1511                 return err;
1512         }
1513
1514         usb_set_intfdata(intf, data);
1515
1516         return 0;
1517 }
1518
1519 static void btusb_disconnect(struct usb_interface *intf)
1520 {
1521         struct btusb_data *data = usb_get_intfdata(intf);
1522         struct hci_dev *hdev;
1523
1524         BT_DBG("intf %p", intf);
1525
1526         if (!data)
1527                 return;
1528
1529         hdev = data->hdev;
1530         usb_set_intfdata(data->intf, NULL);
1531
1532         if (data->isoc)
1533                 usb_set_intfdata(data->isoc, NULL);
1534
1535         hci_unregister_dev(hdev);
1536
1537         if (intf == data->isoc)
1538                 usb_driver_release_interface(&btusb_driver, data->intf);
1539         else if (data->isoc)
1540                 usb_driver_release_interface(&btusb_driver, data->isoc);
1541
1542         hci_free_dev(hdev);
1543 }
1544
1545 #ifdef CONFIG_PM
1546 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1547 {
1548         struct btusb_data *data = usb_get_intfdata(intf);
1549
1550         BT_DBG("intf %p", intf);
1551
1552         if (data->suspend_count++)
1553                 return 0;
1554
1555         spin_lock_irq(&data->txlock);
1556         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1557                 set_bit(BTUSB_SUSPENDING, &data->flags);
1558                 spin_unlock_irq(&data->txlock);
1559         } else {
1560                 spin_unlock_irq(&data->txlock);
1561                 data->suspend_count--;
1562                 return -EBUSY;
1563         }
1564
1565         cancel_work_sync(&data->work);
1566
1567         btusb_stop_traffic(data);
1568         usb_kill_anchored_urbs(&data->tx_anchor);
1569
1570         return 0;
1571 }
1572
1573 static void play_deferred(struct btusb_data *data)
1574 {
1575         struct urb *urb;
1576         int err;
1577
1578         while ((urb = usb_get_from_anchor(&data->deferred))) {
1579                 err = usb_submit_urb(urb, GFP_ATOMIC);
1580                 if (err < 0)
1581                         break;
1582
1583                 data->tx_in_flight++;
1584         }
1585         usb_scuttle_anchored_urbs(&data->deferred);
1586 }
1587
1588 static int btusb_resume(struct usb_interface *intf)
1589 {
1590         struct btusb_data *data = usb_get_intfdata(intf);
1591         struct hci_dev *hdev = data->hdev;
1592         int err = 0;
1593
1594         BT_DBG("intf %p", intf);
1595
1596         if (--data->suspend_count)
1597                 return 0;
1598
1599         if (!test_bit(HCI_RUNNING, &hdev->flags))
1600                 goto done;
1601
1602         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1603                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1604                 if (err < 0) {
1605                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1606                         goto failed;
1607                 }
1608         }
1609
1610         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1611                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1612                 if (err < 0) {
1613                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1614                         goto failed;
1615                 }
1616
1617                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1618         }
1619
1620         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1621                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1622                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1623                 else
1624                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1625         }
1626
1627         spin_lock_irq(&data->txlock);
1628         play_deferred(data);
1629         clear_bit(BTUSB_SUSPENDING, &data->flags);
1630         spin_unlock_irq(&data->txlock);
1631         schedule_work(&data->work);
1632
1633         return 0;
1634
1635 failed:
1636         usb_scuttle_anchored_urbs(&data->deferred);
1637 done:
1638         spin_lock_irq(&data->txlock);
1639         clear_bit(BTUSB_SUSPENDING, &data->flags);
1640         spin_unlock_irq(&data->txlock);
1641
1642         return err;
1643 }
1644 #endif
1645
1646 static struct usb_driver btusb_driver = {
1647         .name           = "btusb",
1648         .probe          = btusb_probe,
1649         .disconnect     = btusb_disconnect,
1650 #ifdef CONFIG_PM
1651         .suspend        = btusb_suspend,
1652         .resume         = btusb_resume,
1653 #endif
1654         .id_table       = btusb_table,
1655         .supports_autosuspend = 1,
1656         .disable_hub_initiated_lpm = 1,
1657 };
1658
1659 module_usb_driver(btusb_driver);
1660
1661 module_param(ignore_dga, bool, 0644);
1662 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1663
1664 module_param(ignore_csr, bool, 0644);
1665 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1666
1667 module_param(ignore_sniffer, bool, 0644);
1668 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1669
1670 module_param(disable_scofix, bool, 0644);
1671 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1672
1673 module_param(force_scofix, bool, 0644);
1674 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1675
1676 module_param(reset, bool, 0644);
1677 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1678
1679 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1680 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1681 MODULE_VERSION(VERSION);
1682 MODULE_LICENSE("GPL");