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
  53 static 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(0x0b05, 0x17b5) },
 105         { USB_DEVICE(0x0b05, 0x17cb) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0489, 0xe042) },
 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
 116         { }     /* Terminating entry */
 117 };
 118
 119 MODULE_DEVICE_TABLE(usb, btusb_table);
 120
 121 static struct usb_device_id blacklist_table[] = {
 122         /* CSR BlueCore devices */
 123         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 124
 125         /* Broadcom BCM2033 without firmware */
 126         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros 3011 with sflash firmware */
 129         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 131         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 132         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros AR9285 Malbec with sflash firmware */
 137         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros 3012 with sflash firmware */
 140         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 164
 165         /* Atheros AR5BBU12 with sflash firmware */
 166         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 167
 168         /* Atheros AR5BBU12 with sflash firmware */
 169         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 171
 172         /* Broadcom BCM2035 */
 173         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 174         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 175         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 176
 177         /* Broadcom BCM2045 */
 178         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 179         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 180
 181         /* IBM/Lenovo ThinkPad with Broadcom chip */
 182         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 183         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 184
 185         /* HP laptop with Broadcom chip */
 186         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 187
 188         /* Dell laptop with Broadcom chip */
 189         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* Dell Wireless 370 and 410 devices */
 192         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* Belkin F8T012 and F8T013 devices */
 196         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Asus WL-BTD202 device */
 200         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Kensington Bluetooth USB adapter */
 203         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* RTX Telecom based adapters with buggy SCO support */
 206         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 207         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 208
 209         /* CONWISE Technology based adapters with buggy SCO support */
 210         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 211
 212         /* Digianswer devices */
 213         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 214         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 215
 216         /* CSR BlueCore Bluetooth Sniffer */
 217         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 218
 219         /* Frontline ComProbe Bluetooth Sniffer */
 220         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 221
 222         /* Intel Bluetooth device */
 223         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 224
 225         { }     /* Terminating entry */
 226 };
 227
 228 #define BTUSB_MAX_ISOC_FRAMES   10
 229
 230 #define BTUSB_INTR_RUNNING      0
 231 #define BTUSB_BULK_RUNNING      1
 232 #define BTUSB_ISOC_RUNNING      2
 233 #define BTUSB_SUSPENDING        3
 234 #define BTUSB_DID_ISO_RESUME    4
 235
 236 struct btusb_data {
 237         struct hci_dev       *hdev;
 238         struct usb_device    *udev;
 239         struct usb_interface *intf;
 240         struct usb_interface *isoc;
 241
 242         spinlock_t lock;
 243
 244         unsigned long flags;
 245
 246         struct work_struct work;
 247         struct work_struct waker;
 248
 249         struct usb_anchor tx_anchor;
 250         struct usb_anchor intr_anchor;
 251         struct usb_anchor bulk_anchor;
 252         struct usb_anchor isoc_anchor;
 253         struct usb_anchor deferred;
 254         int tx_in_flight;
 255         spinlock_t txlock;
 256
 257         struct usb_endpoint_descriptor *intr_ep;
 258         struct usb_endpoint_descriptor *bulk_tx_ep;
 259         struct usb_endpoint_descriptor *bulk_rx_ep;
 260         struct usb_endpoint_descriptor *isoc_tx_ep;
 261         struct usb_endpoint_descriptor *isoc_rx_ep;
 262
 263         __u8 cmdreq_type;
 264
 265         unsigned int sco_num;
 266         int isoc_altsetting;
 267         int suspend_count;
 268 };
 269
 270 static int inc_tx(struct btusb_data *data)
 271 {
 272         unsigned long flags;
 273         int rv;
 274
 275         spin_lock_irqsave(&data->txlock, flags);
 276         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 277         if (!rv)
 278                 data->tx_in_flight++;
 279         spin_unlock_irqrestore(&data->txlock, flags);
 280
 281         return rv;
 282 }
 283
 284 static void btusb_intr_complete(struct urb *urb)
 285 {
 286         struct hci_dev *hdev = urb->context;
 287         struct btusb_data *data = hci_get_drvdata(hdev);
 288         int err;
 289
 290         BT_DBG("%s urb %p status %d count %d", hdev->name,
 291                                         urb, urb->status, urb->actual_length);
 292
 293         if (!test_bit(HCI_RUNNING, &hdev->flags))
 294                 return;
 295
 296         if (urb->status == 0) {
 297                 hdev->stat.byte_rx += urb->actual_length;
 298
 299                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 300                                                 urb->transfer_buffer,
 301                                                 urb->actual_length) < 0) {
 302                         BT_ERR("%s corrupted event packet", hdev->name);
 303                         hdev->stat.err_rx++;
 304                 }
 305         } else if (urb->status == -ENOENT) {
 306                 /* Avoid suspend failed when usb_kill_urb */
 307                 return;
 308         }
 309
 310         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 311                 return;
 312
 313         usb_mark_last_busy(data->udev);
 314         usb_anchor_urb(urb, &data->intr_anchor);
 315
 316         err = usb_submit_urb(urb, GFP_ATOMIC);
 317         if (err < 0) {
 318                 /* -EPERM: urb is being killed;
 319                  * -ENODEV: device got disconnected */
 320                 if (err != -EPERM && err != -ENODEV)
 321                         BT_ERR("%s urb %p failed to resubmit (%d)",
 322                                                 hdev->name, urb, -err);
 323                 usb_unanchor_urb(urb);
 324         }
 325 }
 326
 327 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 328 {
 329         struct btusb_data *data = hci_get_drvdata(hdev);
 330         struct urb *urb;
 331         unsigned char *buf;
 332         unsigned int pipe;
 333         int err, size;
 334
 335         BT_DBG("%s", hdev->name);
 336
 337         if (!data->intr_ep)
 338                 return -ENODEV;
 339
 340         urb = usb_alloc_urb(0, mem_flags);
 341         if (!urb)
 342                 return -ENOMEM;
 343
 344         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 345
 346         buf = kmalloc(size, mem_flags);
 347         if (!buf) {
 348                 usb_free_urb(urb);
 349                 return -ENOMEM;
 350         }
 351
 352         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 353
 354         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 355                                                 btusb_intr_complete, hdev,
 356                                                 data->intr_ep->bInterval);
 357
 358         urb->transfer_flags |= URB_FREE_BUFFER;
 359
 360         usb_anchor_urb(urb, &data->intr_anchor);
 361
 362         err = usb_submit_urb(urb, mem_flags);
 363         if (err < 0) {
 364                 if (err != -EPERM && err != -ENODEV)
 365                         BT_ERR("%s urb %p submission failed (%d)",
 366                                                 hdev->name, urb, -err);
 367                 usb_unanchor_urb(urb);
 368         }
 369
 370         usb_free_urb(urb);
 371
 372         return err;
 373 }
 374
 375 static void btusb_bulk_complete(struct urb *urb)
 376 {
 377         struct hci_dev *hdev = urb->context;
 378         struct btusb_data *data = hci_get_drvdata(hdev);
 379         int err;
 380
 381         BT_DBG("%s urb %p status %d count %d", hdev->name,
 382                                         urb, urb->status, urb->actual_length);
 383
 384         if (!test_bit(HCI_RUNNING, &hdev->flags))
 385                 return;
 386
 387         if (urb->status == 0) {
 388                 hdev->stat.byte_rx += urb->actual_length;
 389
 390                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 391                                                 urb->transfer_buffer,
 392                                                 urb->actual_length) < 0) {
 393                         BT_ERR("%s corrupted ACL packet", hdev->name);
 394                         hdev->stat.err_rx++;
 395                 }
 396         } else if (urb->status == -ENOENT) {
 397                 /* Avoid suspend failed when usb_kill_urb */
 398                 return;
 399         }
 400
 401         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 402                 return;
 403
 404         usb_anchor_urb(urb, &data->bulk_anchor);
 405         usb_mark_last_busy(data->udev);
 406
 407         err = usb_submit_urb(urb, GFP_ATOMIC);
 408         if (err < 0) {
 409                 /* -EPERM: urb is being killed;
 410                  * -ENODEV: device got disconnected */
 411                 if (err != -EPERM && err != -ENODEV)
 412                         BT_ERR("%s urb %p failed to resubmit (%d)",
 413                                                 hdev->name, urb, -err);
 414                 usb_unanchor_urb(urb);
 415         }
 416 }
 417
 418 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 419 {
 420         struct btusb_data *data = hci_get_drvdata(hdev);
 421         struct urb *urb;
 422         unsigned char *buf;
 423         unsigned int pipe;
 424         int err, size = HCI_MAX_FRAME_SIZE;
 425
 426         BT_DBG("%s", hdev->name);
 427
 428         if (!data->bulk_rx_ep)
 429                 return -ENODEV;
 430
 431         urb = usb_alloc_urb(0, mem_flags);
 432         if (!urb)
 433                 return -ENOMEM;
 434
 435         buf = kmalloc(size, mem_flags);
 436         if (!buf) {
 437                 usb_free_urb(urb);
 438                 return -ENOMEM;
 439         }
 440
 441         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 442
 443         usb_fill_bulk_urb(urb, data->udev, pipe,
 444                                         buf, size, btusb_bulk_complete, hdev);
 445
 446         urb->transfer_flags |= URB_FREE_BUFFER;
 447
 448         usb_mark_last_busy(data->udev);
 449         usb_anchor_urb(urb, &data->bulk_anchor);
 450
 451         err = usb_submit_urb(urb, mem_flags);
 452         if (err < 0) {
 453                 if (err != -EPERM && err != -ENODEV)
 454                         BT_ERR("%s urb %p submission failed (%d)",
 455                                                 hdev->name, urb, -err);
 456                 usb_unanchor_urb(urb);
 457         }
 458
 459         usb_free_urb(urb);
 460
 461         return err;
 462 }
 463
 464 static void btusb_isoc_complete(struct urb *urb)
 465 {
 466         struct hci_dev *hdev = urb->context;
 467         struct btusb_data *data = hci_get_drvdata(hdev);
 468         int i, err;
 469
 470         BT_DBG("%s urb %p status %d count %d", hdev->name,
 471                                         urb, urb->status, urb->actual_length);
 472
 473         if (!test_bit(HCI_RUNNING, &hdev->flags))
 474                 return;
 475
 476         if (urb->status == 0) {
 477                 for (i = 0; i < urb->number_of_packets; i++) {
 478                         unsigned int offset = urb->iso_frame_desc[i].offset;
 479                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 480
 481                         if (urb->iso_frame_desc[i].status)
 482                                 continue;
 483
 484                         hdev->stat.byte_rx += length;
 485
 486                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 487                                                 urb->transfer_buffer + offset,
 488                                                                 length) < 0) {
 489                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 490                                 hdev->stat.err_rx++;
 491                         }
 492                 }
 493         } else if (urb->status == -ENOENT) {
 494                 /* Avoid suspend failed when usb_kill_urb */
 495                 return;
 496         }
 497
 498         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 499                 return;
 500
 501         usb_anchor_urb(urb, &data->isoc_anchor);
 502
 503         err = usb_submit_urb(urb, GFP_ATOMIC);
 504         if (err < 0) {
 505                 /* -EPERM: urb is being killed;
 506                  * -ENODEV: device got disconnected */
 507                 if (err != -EPERM && err != -ENODEV)
 508                         BT_ERR("%s urb %p failed to resubmit (%d)",
 509                                                 hdev->name, urb, -err);
 510                 usb_unanchor_urb(urb);
 511         }
 512 }
 513
 514 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 515 {
 516         int i, offset = 0;
 517
 518         BT_DBG("len %d mtu %d", len, mtu);
 519
 520         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 521                                         i++, offset += mtu, len -= mtu) {
 522                 urb->iso_frame_desc[i].offset = offset;
 523                 urb->iso_frame_desc[i].length = mtu;
 524         }
 525
 526         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 527                 urb->iso_frame_desc[i].offset = offset;
 528                 urb->iso_frame_desc[i].length = len;
 529                 i++;
 530         }
 531
 532         urb->number_of_packets = i;
 533 }
 534
 535 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 536 {
 537         struct btusb_data *data = hci_get_drvdata(hdev);
 538         struct urb *urb;
 539         unsigned char *buf;
 540         unsigned int pipe;
 541         int err, size;
 542
 543         BT_DBG("%s", hdev->name);
 544
 545         if (!data->isoc_rx_ep)
 546                 return -ENODEV;
 547
 548         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 549         if (!urb)
 550                 return -ENOMEM;
 551
 552         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 553                                                 BTUSB_MAX_ISOC_FRAMES;
 554
 555         buf = kmalloc(size, mem_flags);
 556         if (!buf) {
 557                 usb_free_urb(urb);
 558                 return -ENOMEM;
 559         }
 560
 561         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 562
 563         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 564                                 hdev, data->isoc_rx_ep->bInterval);
 565
 566         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 567
 568         __fill_isoc_descriptor(urb, size,
 569                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 570
 571         usb_anchor_urb(urb, &data->isoc_anchor);
 572
 573         err = usb_submit_urb(urb, mem_flags);
 574         if (err < 0) {
 575                 if (err != -EPERM && err != -ENODEV)
 576                         BT_ERR("%s urb %p submission failed (%d)",
 577                                                 hdev->name, urb, -err);
 578                 usb_unanchor_urb(urb);
 579         }
 580
 581         usb_free_urb(urb);
 582
 583         return err;
 584 }
 585
 586 static void btusb_tx_complete(struct urb *urb)
 587 {
 588         struct sk_buff *skb = urb->context;
 589         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 590         struct btusb_data *data = hci_get_drvdata(hdev);
 591
 592         BT_DBG("%s urb %p status %d count %d", hdev->name,
 593                                         urb, urb->status, urb->actual_length);
 594
 595         if (!test_bit(HCI_RUNNING, &hdev->flags))
 596                 goto done;
 597
 598         if (!urb->status)
 599                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 600         else
 601                 hdev->stat.err_tx++;
 602
 603 done:
 604         spin_lock(&data->txlock);
 605         data->tx_in_flight--;
 606         spin_unlock(&data->txlock);
 607
 608         kfree(urb->setup_packet);
 609
 610         kfree_skb(skb);
 611 }
 612
 613 static void btusb_isoc_tx_complete(struct urb *urb)
 614 {
 615         struct sk_buff *skb = urb->context;
 616         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 617
 618         BT_DBG("%s urb %p status %d count %d", hdev->name,
 619                                         urb, urb->status, urb->actual_length);
 620
 621         if (!test_bit(HCI_RUNNING, &hdev->flags))
 622                 goto done;
 623
 624         if (!urb->status)
 625                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 626         else
 627                 hdev->stat.err_tx++;
 628
 629 done:
 630         kfree(urb->setup_packet);
 631
 632         kfree_skb(skb);
 633 }
 634
 635 static int btusb_open(struct hci_dev *hdev)
 636 {
 637         struct btusb_data *data = hci_get_drvdata(hdev);
 638         int err;
 639
 640         BT_DBG("%s", hdev->name);
 641
 642         err = usb_autopm_get_interface(data->intf);
 643         if (err < 0)
 644                 return err;
 645
 646         data->intf->needs_remote_wakeup = 1;
 647
 648         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 649                 goto done;
 650
 651         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 652                 goto done;
 653
 654         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 655         if (err < 0)
 656                 goto failed;
 657
 658         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 659         if (err < 0) {
 660                 usb_kill_anchored_urbs(&data->intr_anchor);
 661                 goto failed;
 662         }
 663
 664         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 665         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 666
 667 done:
 668         usb_autopm_put_interface(data->intf);
 669         return 0;
 670
 671 failed:
 672         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 673         clear_bit(HCI_RUNNING, &hdev->flags);
 674         usb_autopm_put_interface(data->intf);
 675         return err;
 676 }
 677
 678 static void btusb_stop_traffic(struct btusb_data *data)
 679 {
 680         usb_kill_anchored_urbs(&data->intr_anchor);
 681         usb_kill_anchored_urbs(&data->bulk_anchor);
 682         usb_kill_anchored_urbs(&data->isoc_anchor);
 683 }
 684
 685 static int btusb_close(struct hci_dev *hdev)
 686 {
 687         struct btusb_data *data = hci_get_drvdata(hdev);
 688         int err;
 689
 690         BT_DBG("%s", hdev->name);
 691
 692         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 693                 return 0;
 694
 695         cancel_work_sync(&data->work);
 696         cancel_work_sync(&data->waker);
 697
 698         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 699         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 700         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 701
 702         btusb_stop_traffic(data);
 703         err = usb_autopm_get_interface(data->intf);
 704         if (err < 0)
 705                 goto failed;
 706
 707         data->intf->needs_remote_wakeup = 0;
 708         usb_autopm_put_interface(data->intf);
 709
 710 failed:
 711         usb_scuttle_anchored_urbs(&data->deferred);
 712         return 0;
 713 }
 714
 715 static int btusb_flush(struct hci_dev *hdev)
 716 {
 717         struct btusb_data *data = hci_get_drvdata(hdev);
 718
 719         BT_DBG("%s", hdev->name);
 720
 721         usb_kill_anchored_urbs(&data->tx_anchor);
 722
 723         return 0;
 724 }
 725
 726 static int btusb_send_frame(struct sk_buff *skb)
 727 {
 728         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 729         struct btusb_data *data = hci_get_drvdata(hdev);
 730         struct usb_ctrlrequest *dr;
 731         struct urb *urb;
 732         unsigned int pipe;
 733         int err;
 734
 735         BT_DBG("%s", hdev->name);
 736
 737         if (!test_bit(HCI_RUNNING, &hdev->flags))
 738                 return -EBUSY;
 739
 740         switch (bt_cb(skb)->pkt_type) {
 741         case HCI_COMMAND_PKT:
 742                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 743                 if (!urb)
 744                         return -ENOMEM;
 745
 746                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 747                 if (!dr) {
 748                         usb_free_urb(urb);
 749                         return -ENOMEM;
 750                 }
 751
 752                 dr->bRequestType = data->cmdreq_type;
 753                 dr->bRequest     = 0;
 754                 dr->wIndex       = 0;
 755                 dr->wValue       = 0;
 756                 dr->wLength      = __cpu_to_le16(skb->len);
 757
 758                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 759
 760                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 761                                 skb->data, skb->len, btusb_tx_complete, skb);
 762
 763                 hdev->stat.cmd_tx++;
 764                 break;
 765
 766         case HCI_ACLDATA_PKT:
 767                 if (!data->bulk_tx_ep)
 768                         return -ENODEV;
 769
 770                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 771                 if (!urb)
 772                         return -ENOMEM;
 773
 774                 pipe = usb_sndbulkpipe(data->udev,
 775                                         data->bulk_tx_ep->bEndpointAddress);
 776
 777                 usb_fill_bulk_urb(urb, data->udev, pipe,
 778                                 skb->data, skb->len, btusb_tx_complete, skb);
 779
 780                 hdev->stat.acl_tx++;
 781                 break;
 782
 783         case HCI_SCODATA_PKT:
 784                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 785                         return -ENODEV;
 786
 787                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 788                 if (!urb)
 789                         return -ENOMEM;
 790
 791                 pipe = usb_sndisocpipe(data->udev,
 792                                         data->isoc_tx_ep->bEndpointAddress);
 793
 794                 usb_fill_int_urb(urb, data->udev, pipe,
 795                                 skb->data, skb->len, btusb_isoc_tx_complete,
 796                                 skb, data->isoc_tx_ep->bInterval);
 797
 798                 urb->transfer_flags  = URB_ISO_ASAP;
 799
 800                 __fill_isoc_descriptor(urb, skb->len,
 801                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 802
 803                 hdev->stat.sco_tx++;
 804                 goto skip_waking;
 805
 806         default:
 807                 return -EILSEQ;
 808         }
 809
 810         err = inc_tx(data);
 811         if (err) {
 812                 usb_anchor_urb(urb, &data->deferred);
 813                 schedule_work(&data->waker);
 814                 err = 0;
 815                 goto done;
 816         }
 817
 818 skip_waking:
 819         usb_anchor_urb(urb, &data->tx_anchor);
 820
 821         err = usb_submit_urb(urb, GFP_ATOMIC);
 822         if (err < 0) {
 823                 if (err != -EPERM && err != -ENODEV)
 824                         BT_ERR("%s urb %p submission failed (%d)",
 825                                                 hdev->name, urb, -err);
 826                 kfree(urb->setup_packet);
 827                 usb_unanchor_urb(urb);
 828         } else {
 829                 usb_mark_last_busy(data->udev);
 830         }
 831
 832 done:
 833         usb_free_urb(urb);
 834         return err;
 835 }
 836
 837 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 838 {
 839         struct btusb_data *data = hci_get_drvdata(hdev);
 840
 841         BT_DBG("%s evt %d", hdev->name, evt);
 842
 843         if (hdev->conn_hash.sco_num != data->sco_num) {
 844                 data->sco_num = hdev->conn_hash.sco_num;
 845                 schedule_work(&data->work);
 846         }
 847 }
 848
 849 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 850 {
 851         struct btusb_data *data = hci_get_drvdata(hdev);
 852         struct usb_interface *intf = data->isoc;
 853         struct usb_endpoint_descriptor *ep_desc;
 854         int i, err;
 855
 856         if (!data->isoc)
 857                 return -ENODEV;
 858
 859         err = usb_set_interface(data->udev, 1, altsetting);
 860         if (err < 0) {
 861                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 862                 return err;
 863         }
 864
 865         data->isoc_altsetting = altsetting;
 866
 867         data->isoc_tx_ep = NULL;
 868         data->isoc_rx_ep = NULL;
 869
 870         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 871                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 872
 873                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 874                         data->isoc_tx_ep = ep_desc;
 875                         continue;
 876                 }
 877
 878                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 879                         data->isoc_rx_ep = ep_desc;
 880                         continue;
 881                 }
 882         }
 883
 884         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 885                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 886                 return -ENODEV;
 887         }
 888
 889         return 0;
 890 }
 891
 892 static void btusb_work(struct work_struct *work)
 893 {
 894         struct btusb_data *data = container_of(work, struct btusb_data, work);
 895         struct hci_dev *hdev = data->hdev;
 896         int new_alts;
 897         int err;
 898
 899         if (hdev->conn_hash.sco_num > 0) {
 900                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 901                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 902                         if (err < 0) {
 903                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 904                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 905                                 return;
 906                         }
 907
 908                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 909                 }
 910
 911                 if (hdev->voice_setting & 0x0020) {
 912                         static const int alts[3] = { 2, 4, 5 };
 913                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 914                 } else {
 915                         new_alts = hdev->conn_hash.sco_num;
 916                 }
 917
 918                 if (data->isoc_altsetting != new_alts) {
 919                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 920                         usb_kill_anchored_urbs(&data->isoc_anchor);
 921
 922                         if (__set_isoc_interface(hdev, new_alts) < 0)
 923                                 return;
 924                 }
 925
 926                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 927                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 928                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 929                         else
 930                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 931                 }
 932         } else {
 933                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 934                 usb_kill_anchored_urbs(&data->isoc_anchor);
 935
 936                 __set_isoc_interface(hdev, 0);
 937                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 938                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 939         }
 940 }
 941
 942 static void btusb_waker(struct work_struct *work)
 943 {
 944         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 945         int err;
 946
 947         err = usb_autopm_get_interface(data->intf);
 948         if (err < 0)
 949                 return;
 950
 951         usb_autopm_put_interface(data->intf);
 952 }
 953
 954 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 955 {
 956         struct sk_buff *skb;
 957         u8 val = 0x00;
 958
 959         BT_DBG("%s", hdev->name);
 960
 961         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 962         if (IS_ERR(skb))
 963                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 964         else
 965                 kfree_skb(skb);
 966
 967         return 0;
 968 }
 969
 970 struct intel_version {
 971         u8 status;
 972         u8 hw_platform;
 973         u8 hw_variant;
 974         u8 hw_revision;
 975         u8 fw_variant;
 976         u8 fw_revision;
 977         u8 fw_build_num;
 978         u8 fw_build_ww;
 979         u8 fw_build_yy;
 980         u8 fw_patch_num;
 981 } __packed;
 982
 983 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 984                                                 struct intel_version *ver)
 985 {
 986         const struct firmware *fw;
 987         char fwname[64];
 988         int ret;
 989
 990         snprintf(fwname, sizeof(fwname),
 991                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 992                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 993                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 994                  ver->fw_build_ww, ver->fw_build_yy);
 995
 996         ret = request_firmware(&fw, fwname, &hdev->dev);
 997         if (ret < 0) {
 998                 if (ret == -EINVAL) {
 999                         BT_ERR("%s Intel firmware file request failed (%d)",
1000                                hdev->name, ret);
1001                         return NULL;
1002                 }
1003
1004                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1005                        hdev->name, fwname, ret);
1006
1007                 /* If the correct firmware patch file is not found, use the
1008                  * default firmware patch file instead
1009                  */
1010                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1011                          ver->hw_platform, ver->hw_variant);
1012                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1013                         BT_ERR("%s failed to open default Intel fw file: %s",
1014                                hdev->name, fwname);
1015                         return NULL;
1016                 }
1017         }
1018
1019         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1020
1021         return fw;
1022 }
1023
1024 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1025                                       const struct firmware *fw,
1026                                       const u8 **fw_ptr, int *disable_patch)
1027 {
1028         struct sk_buff *skb;
1029         struct hci_command_hdr *cmd;
1030         const u8 *cmd_param;
1031         struct hci_event_hdr *evt = NULL;
1032         const u8 *evt_param = NULL;
1033         int remain = fw->size - (*fw_ptr - fw->data);
1034
1035         /* The first byte indicates the types of the patch command or event.
1036          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1037          * in the current firmware buffer doesn't start with 0x01 or
1038          * the size of remain buffer is smaller than HCI command header,
1039          * the firmware file is corrupted and it should stop the patching
1040          * process.
1041          */
1042         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1043                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1044                 return -EINVAL;
1045         }
1046         (*fw_ptr)++;
1047         remain--;
1048
1049         cmd = (struct hci_command_hdr *)(*fw_ptr);
1050         *fw_ptr += sizeof(*cmd);
1051         remain -= sizeof(*cmd);
1052
1053         /* Ensure that the remain firmware data is long enough than the length
1054          * of command parameter. If not, the firmware file is corrupted.
1055          */
1056         if (remain < cmd->plen) {
1057                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1058                 return -EFAULT;
1059         }
1060
1061         /* If there is a command that loads a patch in the firmware
1062          * file, then enable the patch upon success, otherwise just
1063          * disable the manufacturer mode, for example patch activation
1064          * is not required when the default firmware patch file is used
1065          * because there are no patch data to load.
1066          */
1067         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1068                 *disable_patch = 0;
1069
1070         cmd_param = *fw_ptr;
1071         *fw_ptr += cmd->plen;
1072         remain -= cmd->plen;
1073
1074         /* This reads the expected events when the above command is sent to the
1075          * device. Some vendor commands expects more than one events, for
1076          * example command status event followed by vendor specific event.
1077          * For this case, it only keeps the last expected event. so the command
1078          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1079          * last expected event.
1080          */
1081         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1082                 (*fw_ptr)++;
1083                 remain--;
1084
1085                 evt = (struct hci_event_hdr *)(*fw_ptr);
1086                 *fw_ptr += sizeof(*evt);
1087                 remain -= sizeof(*evt);
1088
1089                 if (remain < evt->plen) {
1090                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1091                                hdev->name);
1092                         return -EFAULT;
1093                 }
1094
1095                 evt_param = *fw_ptr;
1096                 *fw_ptr += evt->plen;
1097                 remain -= evt->plen;
1098         }
1099
1100         /* Every HCI commands in the firmware file has its correspond event.
1101          * If event is not found or remain is smaller than zero, the firmware
1102          * file is corrupted.
1103          */
1104         if (!evt || !evt_param || remain < 0) {
1105                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1106                 return -EFAULT;
1107         }
1108
1109         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1110                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1111         if (IS_ERR(skb)) {
1112                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1113                        hdev->name, cmd->opcode, PTR_ERR(skb));
1114                 return PTR_ERR(skb);
1115         }
1116
1117         /* It ensures that the returned event matches the event data read from
1118          * the firmware file. At fist, it checks the length and then
1119          * the contents of the event.
1120          */
1121         if (skb->len != evt->plen) {
1122                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1123                        le16_to_cpu(cmd->opcode));
1124                 kfree_skb(skb);
1125                 return -EFAULT;
1126         }
1127
1128         if (memcmp(skb->data, evt_param, evt->plen)) {
1129                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1130                        hdev->name, le16_to_cpu(cmd->opcode));
1131                 kfree_skb(skb);
1132                 return -EFAULT;
1133         }
1134         kfree_skb(skb);
1135
1136         return 0;
1137 }
1138
1139 static int btusb_setup_intel(struct hci_dev *hdev)
1140 {
1141         struct sk_buff *skb;
1142         const struct firmware *fw;
1143         const u8 *fw_ptr;
1144         int disable_patch;
1145         struct intel_version *ver;
1146
1147         const u8 mfg_enable[] = { 0x01, 0x00 };
1148         const u8 mfg_disable[] = { 0x00, 0x00 };
1149         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1150         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1151
1152         BT_DBG("%s", hdev->name);
1153
1154         /* The controller has a bug with the first HCI command sent to it
1155          * returning number of completed commands as zero. This would stall the
1156          * command processing in the Bluetooth core.
1157          *
1158          * As a workaround, send HCI Reset command first which will reset the
1159          * number of completed commands and allow normal command processing
1160          * from now on.
1161          */
1162         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1163         if (IS_ERR(skb)) {
1164                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1165                        hdev->name, PTR_ERR(skb));
1166                 return PTR_ERR(skb);
1167         }
1168         kfree_skb(skb);
1169
1170         /* Read Intel specific controller version first to allow selection of
1171          * which firmware file to load.
1172          *
1173          * The returned information are hardware variant and revision plus
1174          * firmware variant, revision and build number.
1175          */
1176         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1177         if (IS_ERR(skb)) {
1178                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1179                        hdev->name, PTR_ERR(skb));
1180                 return PTR_ERR(skb);
1181         }
1182
1183         if (skb->len != sizeof(*ver)) {
1184                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1185                 kfree_skb(skb);
1186                 return -EIO;
1187         }
1188
1189         ver = (struct intel_version *)skb->data;
1190         if (ver->status) {
1191                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1192                        ver->status);
1193                 kfree_skb(skb);
1194                 return -bt_to_errno(ver->status);
1195         }
1196
1197         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1198                 hdev->name, ver->hw_platform, ver->hw_variant,
1199                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1200                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1201                 ver->fw_patch_num);
1202
1203         /* fw_patch_num indicates the version of patch the device currently
1204          * have. If there is no patch data in the device, it is always 0x00.
1205          * So, if it is other than 0x00, no need to patch the deivce again.
1206          */
1207         if (ver->fw_patch_num) {
1208                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1209                         hdev->name, ver->fw_patch_num);
1210                 kfree_skb(skb);
1211                 return 0;
1212         }
1213
1214         /* Opens the firmware patch file based on the firmware version read
1215          * from the controller. If it fails to open the matching firmware
1216          * patch file, it tries to open the default firmware patch file.
1217          * If no patch file is found, allow the device to operate without
1218          * a patch.
1219          */
1220         fw = btusb_setup_intel_get_fw(hdev, ver);
1221         if (!fw) {
1222                 kfree_skb(skb);
1223                 return 0;
1224         }
1225         fw_ptr = fw->data;
1226
1227         /* This Intel specific command enables the manufacturer mode of the
1228          * controller.
1229          *
1230          * Only while this mode is enabled, the driver can download the
1231          * firmware patch data and configuration parameters.
1232          */
1233         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1234         if (IS_ERR(skb)) {
1235                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1236                        hdev->name, PTR_ERR(skb));
1237                 release_firmware(fw);
1238                 return PTR_ERR(skb);
1239         }
1240
1241         if (skb->data[0]) {
1242                 u8 evt_status = skb->data[0];
1243                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1244                        hdev->name, evt_status);
1245                 kfree_skb(skb);
1246                 release_firmware(fw);
1247                 return -bt_to_errno(evt_status);
1248         }
1249         kfree_skb(skb);
1250
1251         disable_patch = 1;
1252
1253         /* The firmware data file consists of list of Intel specific HCI
1254          * commands and its expected events. The first byte indicates the
1255          * type of the message, either HCI command or HCI event.
1256          *
1257          * It reads the command and its expected event from the firmware file,
1258          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1259          * the returned event is compared with the event read from the firmware
1260          * file and it will continue until all the messages are downloaded to
1261          * the controller.
1262          *
1263          * Once the firmware patching is completed successfully,
1264          * the manufacturer mode is disabled with reset and activating the
1265          * downloaded patch.
1266          *
1267          * If the firmware patching fails, the manufacturer mode is
1268          * disabled with reset and deactivating the patch.
1269          *
1270          * If the default patch file is used, no reset is done when disabling
1271          * the manufacturer.
1272          */
1273         while (fw->size > fw_ptr - fw->data) {
1274                 int ret;
1275
1276                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1277                                                  &disable_patch);
1278                 if (ret < 0)
1279                         goto exit_mfg_deactivate;
1280         }
1281
1282         release_firmware(fw);
1283
1284         if (disable_patch)
1285                 goto exit_mfg_disable;
1286
1287         /* Patching completed successfully and disable the manufacturer mode
1288          * with reset and activate the downloaded firmware patches.
1289          */
1290         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1291                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1292         if (IS_ERR(skb)) {
1293                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1294                        hdev->name, PTR_ERR(skb));
1295                 return PTR_ERR(skb);
1296         }
1297         kfree_skb(skb);
1298
1299         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1300                 hdev->name);
1301
1302         return 0;
1303
1304 exit_mfg_disable:
1305         /* Disable the manufacturer mode without reset */
1306         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1307                              HCI_INIT_TIMEOUT);
1308         if (IS_ERR(skb)) {
1309                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1310                        hdev->name, PTR_ERR(skb));
1311                 return PTR_ERR(skb);
1312         }
1313         kfree_skb(skb);
1314
1315         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1316         return 0;
1317
1318 exit_mfg_deactivate:
1319         release_firmware(fw);
1320
1321         /* Patching failed. Disable the manufacturer mode with reset and
1322          * deactivate the downloaded firmware patches.
1323          */
1324         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1325                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1326         if (IS_ERR(skb)) {
1327                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1328                        hdev->name, PTR_ERR(skb));
1329                 return PTR_ERR(skb);
1330         }
1331         kfree_skb(skb);
1332
1333         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1334                 hdev->name);
1335
1336         return 0;
1337 }
1338
1339 static int btusb_probe(struct usb_interface *intf,
1340                                 const struct usb_device_id *id)
1341 {
1342         struct usb_endpoint_descriptor *ep_desc;
1343         struct btusb_data *data;
1344         struct hci_dev *hdev;
1345         int i, err;
1346
1347         BT_DBG("intf %p id %p", intf, id);
1348
1349         /* interface numbers are hardcoded in the spec */
1350         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1351                 return -ENODEV;
1352
1353         if (!id->driver_info) {
1354                 const struct usb_device_id *match;
1355                 match = usb_match_id(intf, blacklist_table);
1356                 if (match)
1357                         id = match;
1358         }
1359
1360         if (id->driver_info == BTUSB_IGNORE)
1361                 return -ENODEV;
1362
1363         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1364                 return -ENODEV;
1365
1366         if (ignore_csr && id->driver_info & BTUSB_CSR)
1367                 return -ENODEV;
1368
1369         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1370                 return -ENODEV;
1371
1372         if (id->driver_info & BTUSB_ATH3012) {
1373                 struct usb_device *udev = interface_to_usbdev(intf);
1374
1375                 /* Old firmware would otherwise let ath3k driver load
1376                  * patch and sysconfig files */
1377                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1378                         return -ENODEV;
1379         }
1380
1381         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1382         if (!data)
1383                 return -ENOMEM;
1384
1385         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1386                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1387
1388                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1389                         data->intr_ep = ep_desc;
1390                         continue;
1391                 }
1392
1393                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1394                         data->bulk_tx_ep = ep_desc;
1395                         continue;
1396                 }
1397
1398                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1399                         data->bulk_rx_ep = ep_desc;
1400                         continue;
1401                 }
1402         }
1403
1404         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1405                 return -ENODEV;
1406
1407         data->cmdreq_type = USB_TYPE_CLASS;
1408
1409         data->udev = interface_to_usbdev(intf);
1410         data->intf = intf;
1411
1412         spin_lock_init(&data->lock);
1413
1414         INIT_WORK(&data->work, btusb_work);
1415         INIT_WORK(&data->waker, btusb_waker);
1416         spin_lock_init(&data->txlock);
1417
1418         init_usb_anchor(&data->tx_anchor);
1419         init_usb_anchor(&data->intr_anchor);
1420         init_usb_anchor(&data->bulk_anchor);
1421         init_usb_anchor(&data->isoc_anchor);
1422         init_usb_anchor(&data->deferred);
1423
1424         hdev = hci_alloc_dev();
1425         if (!hdev)
1426                 return -ENOMEM;
1427
1428         hdev->bus = HCI_USB;
1429         hci_set_drvdata(hdev, data);
1430
1431         data->hdev = hdev;
1432
1433         SET_HCIDEV_DEV(hdev, &intf->dev);
1434
1435         hdev->open   = btusb_open;
1436         hdev->close  = btusb_close;
1437         hdev->flush  = btusb_flush;
1438         hdev->send   = btusb_send_frame;
1439         hdev->notify = btusb_notify;
1440
1441         if (id->driver_info & BTUSB_BCM92035)
1442                 hdev->setup = btusb_setup_bcm92035;
1443
1444         if (id->driver_info & BTUSB_INTEL)
1445                 hdev->setup = btusb_setup_intel;
1446
1447         /* Interface numbers are hardcoded in the specification */
1448         data->isoc = usb_ifnum_to_if(data->udev, 1);
1449
1450         if (!reset)
1451                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1452
1453         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1454                 if (!disable_scofix)
1455                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1456         }
1457
1458         if (id->driver_info & BTUSB_BROKEN_ISOC)
1459                 data->isoc = NULL;
1460
1461         if (id->driver_info & BTUSB_DIGIANSWER) {
1462                 data->cmdreq_type = USB_TYPE_VENDOR;
1463                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1464         }
1465
1466         if (id->driver_info & BTUSB_CSR) {
1467                 struct usb_device *udev = data->udev;
1468
1469                 /* Old firmware would otherwise execute USB reset */
1470                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1471                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1472         }
1473
1474         if (id->driver_info & BTUSB_SNIFFER) {
1475                 struct usb_device *udev = data->udev;
1476
1477                 /* New sniffer firmware has crippled HCI interface */
1478                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1479                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1480
1481                 data->isoc = NULL;
1482         }
1483
1484         if (data->isoc) {
1485                 err = usb_driver_claim_interface(&btusb_driver,
1486                                                         data->isoc, data);
1487                 if (err < 0) {
1488                         hci_free_dev(hdev);
1489                         return err;
1490                 }
1491         }
1492
1493         err = hci_register_dev(hdev);
1494         if (err < 0) {
1495                 hci_free_dev(hdev);
1496                 return err;
1497         }
1498
1499         usb_set_intfdata(intf, data);
1500
1501         return 0;
1502 }
1503
1504 static void btusb_disconnect(struct usb_interface *intf)
1505 {
1506         struct btusb_data *data = usb_get_intfdata(intf);
1507         struct hci_dev *hdev;
1508
1509         BT_DBG("intf %p", intf);
1510
1511         if (!data)
1512                 return;
1513
1514         hdev = data->hdev;
1515         usb_set_intfdata(data->intf, NULL);
1516
1517         if (data->isoc)
1518                 usb_set_intfdata(data->isoc, NULL);
1519
1520         hci_unregister_dev(hdev);
1521
1522         if (intf == data->isoc)
1523                 usb_driver_release_interface(&btusb_driver, data->intf);
1524         else if (data->isoc)
1525                 usb_driver_release_interface(&btusb_driver, data->isoc);
1526
1527         hci_free_dev(hdev);
1528 }
1529
1530 #ifdef CONFIG_PM
1531 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1532 {
1533         struct btusb_data *data = usb_get_intfdata(intf);
1534
1535         BT_DBG("intf %p", intf);
1536
1537         if (data->suspend_count++)
1538                 return 0;
1539
1540         spin_lock_irq(&data->txlock);
1541         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1542                 set_bit(BTUSB_SUSPENDING, &data->flags);
1543                 spin_unlock_irq(&data->txlock);
1544         } else {
1545                 spin_unlock_irq(&data->txlock);
1546                 data->suspend_count--;
1547                 return -EBUSY;
1548         }
1549
1550         cancel_work_sync(&data->work);
1551
1552         btusb_stop_traffic(data);
1553         usb_kill_anchored_urbs(&data->tx_anchor);
1554
1555         return 0;
1556 }
1557
1558 static void play_deferred(struct btusb_data *data)
1559 {
1560         struct urb *urb;
1561         int err;
1562
1563         while ((urb = usb_get_from_anchor(&data->deferred))) {
1564                 err = usb_submit_urb(urb, GFP_ATOMIC);
1565                 if (err < 0)
1566                         break;
1567
1568                 data->tx_in_flight++;
1569         }
1570         usb_scuttle_anchored_urbs(&data->deferred);
1571 }
1572
1573 static int btusb_resume(struct usb_interface *intf)
1574 {
1575         struct btusb_data *data = usb_get_intfdata(intf);
1576         struct hci_dev *hdev = data->hdev;
1577         int err = 0;
1578
1579         BT_DBG("intf %p", intf);
1580
1581         if (--data->suspend_count)
1582                 return 0;
1583
1584         if (!test_bit(HCI_RUNNING, &hdev->flags))
1585                 goto done;
1586
1587         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1588                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1589                 if (err < 0) {
1590                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1591                         goto failed;
1592                 }
1593         }
1594
1595         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1596                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1597                 if (err < 0) {
1598                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1599                         goto failed;
1600                 }
1601
1602                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1603         }
1604
1605         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1606                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1607                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1608                 else
1609                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1610         }
1611
1612         spin_lock_irq(&data->txlock);
1613         play_deferred(data);
1614         clear_bit(BTUSB_SUSPENDING, &data->flags);
1615         spin_unlock_irq(&data->txlock);
1616         schedule_work(&data->work);
1617
1618         return 0;
1619
1620 failed:
1621         usb_scuttle_anchored_urbs(&data->deferred);
1622 done:
1623         spin_lock_irq(&data->txlock);
1624         clear_bit(BTUSB_SUSPENDING, &data->flags);
1625         spin_unlock_irq(&data->txlock);
1626
1627         return err;
1628 }
1629 #endif
1630
1631 static struct usb_driver btusb_driver = {
1632         .name           = "btusb",
1633         .probe          = btusb_probe,
1634         .disconnect     = btusb_disconnect,
1635 #ifdef CONFIG_PM
1636         .suspend        = btusb_suspend,
1637         .resume         = btusb_resume,
1638 #endif
1639         .id_table       = btusb_table,
1640         .supports_autosuspend = 1,
1641         .disable_hub_initiated_lpm = 1,
1642 };
1643
1644 module_usb_driver(btusb_driver);
1645
1646 module_param(ignore_dga, bool, 0644);
1647 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1648
1649 module_param(ignore_csr, bool, 0644);
1650 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1651
1652 module_param(ignore_sniffer, bool, 0644);
1653 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1654
1655 module_param(disable_scofix, bool, 0644);
1656 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1657
1658 module_param(force_scofix, bool, 0644);
1659 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1660
1661 module_param(reset, bool, 0644);
1662 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1663
1664 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1665 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1666 MODULE_VERSION(VERSION);
1667 MODULE_LICENSE("GPL");