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         /* Broadcom SoftSailing reporting vendor specific */
  61         { USB_DEVICE(0x0a5c, 0x21e1) },
  62
  63         /* Apple MacBookPro 7,1 */
  64         { USB_DEVICE(0x05ac, 0x8213) },
  65
  66         /* Apple iMac11,1 */
  67         { USB_DEVICE(0x05ac, 0x8215) },
  68
  69         /* Apple MacBookPro6,2 */
  70         { USB_DEVICE(0x05ac, 0x8218) },
  71
  72         /* Apple MacBookAir3,1, MacBookAir3,2 */
  73         { USB_DEVICE(0x05ac, 0x821b) },
  74
  75         /* Apple MacBookAir4,1 */
  76         { USB_DEVICE(0x05ac, 0x821f) },
  77
  78         /* Apple MacBookPro8,2 */
  79         { USB_DEVICE(0x05ac, 0x821a) },
  80
  81         /* Apple MacMini5,1 */
  82         { USB_DEVICE(0x05ac, 0x8281) },
  83
  84         /* AVM BlueFRITZ! USB v2.0 */
  85         { USB_DEVICE(0x057c, 0x3800) },
  86
  87         /* Bluetooth Ultraport Module from IBM */
  88         { USB_DEVICE(0x04bf, 0x030a) },
  89
  90         /* ALPS Modules with non-standard id */
  91         { USB_DEVICE(0x044e, 0x3001) },
  92         { USB_DEVICE(0x044e, 0x3002) },
  93
  94         /* Ericsson with non-standard id */
  95         { USB_DEVICE(0x0bdb, 0x1002) },
  96
  97         /* Canyon CN-BTU1 with HID interfaces */
  98         { USB_DEVICE(0x0c10, 0x0000) },
  99
 100         /* Broadcom BCM20702A0 */
 101         { USB_DEVICE(0x0b05, 0x17b5) },
 102         { USB_DEVICE(0x04ca, 0x2003) },
 103         { USB_DEVICE(0x0489, 0xe042) },
 104         { USB_DEVICE(0x413c, 0x8197) },
 105
 106         /* Foxconn - Hon Hai */
 107         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 108
 109         /*Broadcom devices with vendor specific id */
 110         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 111
 112         { }     /* Terminating entry */
 113 };
 114
 115 MODULE_DEVICE_TABLE(usb, btusb_table);
 116
 117 static struct usb_device_id blacklist_table[] = {
 118         /* CSR BlueCore devices */
 119         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 120
 121         /* Broadcom BCM2033 without firmware */
 122         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 123
 124         /* Atheros 3011 with sflash firmware */
 125         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 126         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 127         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 128         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 129         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 131
 132         /* Atheros AR9285 Malbec with sflash firmware */
 133         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 134
 135         /* Atheros 3012 with sflash firmware */
 136         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 154
 155         /* Atheros AR5BBU12 with sflash firmware */
 156         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 157
 158         /* Atheros AR5BBU12 with sflash firmware */
 159         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 161
 162         /* Broadcom BCM2035 */
 163         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 164         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 165         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 166
 167         /* Broadcom BCM2045 */
 168         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 169         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 170
 171         /* IBM/Lenovo ThinkPad with Broadcom chip */
 172         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 173         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 174
 175         /* HP laptop with Broadcom chip */
 176         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 177
 178         /* Dell laptop with Broadcom chip */
 179         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 180
 181         /* Dell Wireless 370 and 410 devices */
 182         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 183         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 184
 185         /* Belkin F8T012 and F8T013 devices */
 186         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 187         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 188
 189         /* Asus WL-BTD202 device */
 190         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 191
 192         /* Kensington Bluetooth USB adapter */
 193         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* RTX Telecom based adapters with buggy SCO support */
 196         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 197         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 198
 199         /* CONWISE Technology based adapters with buggy SCO support */
 200         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 201
 202         /* Digianswer devices */
 203         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 204         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 205
 206         /* CSR BlueCore Bluetooth Sniffer */
 207         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 208
 209         /* Frontline ComProbe Bluetooth Sniffer */
 210         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 211
 212         /* Intel Bluetooth device */
 213         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 214
 215         { }     /* Terminating entry */
 216 };
 217
 218 #define BTUSB_MAX_ISOC_FRAMES   10
 219
 220 #define BTUSB_INTR_RUNNING      0
 221 #define BTUSB_BULK_RUNNING      1
 222 #define BTUSB_ISOC_RUNNING      2
 223 #define BTUSB_SUSPENDING        3
 224 #define BTUSB_DID_ISO_RESUME    4
 225
 226 struct btusb_data {
 227         struct hci_dev       *hdev;
 228         struct usb_device    *udev;
 229         struct usb_interface *intf;
 230         struct usb_interface *isoc;
 231
 232         spinlock_t lock;
 233
 234         unsigned long flags;
 235
 236         struct work_struct work;
 237         struct work_struct waker;
 238
 239         struct usb_anchor tx_anchor;
 240         struct usb_anchor intr_anchor;
 241         struct usb_anchor bulk_anchor;
 242         struct usb_anchor isoc_anchor;
 243         struct usb_anchor deferred;
 244         int tx_in_flight;
 245         spinlock_t txlock;
 246
 247         struct usb_endpoint_descriptor *intr_ep;
 248         struct usb_endpoint_descriptor *bulk_tx_ep;
 249         struct usb_endpoint_descriptor *bulk_rx_ep;
 250         struct usb_endpoint_descriptor *isoc_tx_ep;
 251         struct usb_endpoint_descriptor *isoc_rx_ep;
 252
 253         __u8 cmdreq_type;
 254
 255         unsigned int sco_num;
 256         int isoc_altsetting;
 257         int suspend_count;
 258 };
 259
 260 static int inc_tx(struct btusb_data *data)
 261 {
 262         unsigned long flags;
 263         int rv;
 264
 265         spin_lock_irqsave(&data->txlock, flags);
 266         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 267         if (!rv)
 268                 data->tx_in_flight++;
 269         spin_unlock_irqrestore(&data->txlock, flags);
 270
 271         return rv;
 272 }
 273
 274 static void btusb_intr_complete(struct urb *urb)
 275 {
 276         struct hci_dev *hdev = urb->context;
 277         struct btusb_data *data = hci_get_drvdata(hdev);
 278         int err;
 279
 280         BT_DBG("%s urb %p status %d count %d", hdev->name,
 281                                         urb, urb->status, urb->actual_length);
 282
 283         if (!test_bit(HCI_RUNNING, &hdev->flags))
 284                 return;
 285
 286         if (urb->status == 0) {
 287                 hdev->stat.byte_rx += urb->actual_length;
 288
 289                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 290                                                 urb->transfer_buffer,
 291                                                 urb->actual_length) < 0) {
 292                         BT_ERR("%s corrupted event packet", hdev->name);
 293                         hdev->stat.err_rx++;
 294                 }
 295         }
 296
 297         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 298                 return;
 299
 300         usb_mark_last_busy(data->udev);
 301         usb_anchor_urb(urb, &data->intr_anchor);
 302
 303         err = usb_submit_urb(urb, GFP_ATOMIC);
 304         if (err < 0) {
 305                 /* -EPERM: urb is being killed;
 306                  * -ENODEV: device got disconnected */
 307                 if (err != -EPERM && err != -ENODEV)
 308                         BT_ERR("%s urb %p failed to resubmit (%d)",
 309                                                 hdev->name, urb, -err);
 310                 usb_unanchor_urb(urb);
 311         }
 312 }
 313
 314 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 315 {
 316         struct btusb_data *data = hci_get_drvdata(hdev);
 317         struct urb *urb;
 318         unsigned char *buf;
 319         unsigned int pipe;
 320         int err, size;
 321
 322         BT_DBG("%s", hdev->name);
 323
 324         if (!data->intr_ep)
 325                 return -ENODEV;
 326
 327         urb = usb_alloc_urb(0, mem_flags);
 328         if (!urb)
 329                 return -ENOMEM;
 330
 331         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 332
 333         buf = kmalloc(size, mem_flags);
 334         if (!buf) {
 335                 usb_free_urb(urb);
 336                 return -ENOMEM;
 337         }
 338
 339         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 340
 341         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 342                                                 btusb_intr_complete, hdev,
 343                                                 data->intr_ep->bInterval);
 344
 345         urb->transfer_flags |= URB_FREE_BUFFER;
 346
 347         usb_anchor_urb(urb, &data->intr_anchor);
 348
 349         err = usb_submit_urb(urb, mem_flags);
 350         if (err < 0) {
 351                 if (err != -EPERM && err != -ENODEV)
 352                         BT_ERR("%s urb %p submission failed (%d)",
 353                                                 hdev->name, urb, -err);
 354                 usb_unanchor_urb(urb);
 355         }
 356
 357         usb_free_urb(urb);
 358
 359         return err;
 360 }
 361
 362 static void btusb_bulk_complete(struct urb *urb)
 363 {
 364         struct hci_dev *hdev = urb->context;
 365         struct btusb_data *data = hci_get_drvdata(hdev);
 366         int err;
 367
 368         BT_DBG("%s urb %p status %d count %d", hdev->name,
 369                                         urb, urb->status, urb->actual_length);
 370
 371         if (!test_bit(HCI_RUNNING, &hdev->flags))
 372                 return;
 373
 374         if (urb->status == 0) {
 375                 hdev->stat.byte_rx += urb->actual_length;
 376
 377                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 378                                                 urb->transfer_buffer,
 379                                                 urb->actual_length) < 0) {
 380                         BT_ERR("%s corrupted ACL packet", hdev->name);
 381                         hdev->stat.err_rx++;
 382                 }
 383         }
 384
 385         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 386                 return;
 387
 388         usb_anchor_urb(urb, &data->bulk_anchor);
 389         usb_mark_last_busy(data->udev);
 390
 391         err = usb_submit_urb(urb, GFP_ATOMIC);
 392         if (err < 0) {
 393                 /* -EPERM: urb is being killed;
 394                  * -ENODEV: device got disconnected */
 395                 if (err != -EPERM && err != -ENODEV)
 396                         BT_ERR("%s urb %p failed to resubmit (%d)",
 397                                                 hdev->name, urb, -err);
 398                 usb_unanchor_urb(urb);
 399         }
 400 }
 401
 402 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 403 {
 404         struct btusb_data *data = hci_get_drvdata(hdev);
 405         struct urb *urb;
 406         unsigned char *buf;
 407         unsigned int pipe;
 408         int err, size = HCI_MAX_FRAME_SIZE;
 409
 410         BT_DBG("%s", hdev->name);
 411
 412         if (!data->bulk_rx_ep)
 413                 return -ENODEV;
 414
 415         urb = usb_alloc_urb(0, mem_flags);
 416         if (!urb)
 417                 return -ENOMEM;
 418
 419         buf = kmalloc(size, mem_flags);
 420         if (!buf) {
 421                 usb_free_urb(urb);
 422                 return -ENOMEM;
 423         }
 424
 425         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 426
 427         usb_fill_bulk_urb(urb, data->udev, pipe,
 428                                         buf, size, btusb_bulk_complete, hdev);
 429
 430         urb->transfer_flags |= URB_FREE_BUFFER;
 431
 432         usb_mark_last_busy(data->udev);
 433         usb_anchor_urb(urb, &data->bulk_anchor);
 434
 435         err = usb_submit_urb(urb, mem_flags);
 436         if (err < 0) {
 437                 if (err != -EPERM && err != -ENODEV)
 438                         BT_ERR("%s urb %p submission failed (%d)",
 439                                                 hdev->name, urb, -err);
 440                 usb_unanchor_urb(urb);
 441         }
 442
 443         usb_free_urb(urb);
 444
 445         return err;
 446 }
 447
 448 static void btusb_isoc_complete(struct urb *urb)
 449 {
 450         struct hci_dev *hdev = urb->context;
 451         struct btusb_data *data = hci_get_drvdata(hdev);
 452         int i, err;
 453
 454         BT_DBG("%s urb %p status %d count %d", hdev->name,
 455                                         urb, urb->status, urb->actual_length);
 456
 457         if (!test_bit(HCI_RUNNING, &hdev->flags))
 458                 return;
 459
 460         if (urb->status == 0) {
 461                 for (i = 0; i < urb->number_of_packets; i++) {
 462                         unsigned int offset = urb->iso_frame_desc[i].offset;
 463                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 464
 465                         if (urb->iso_frame_desc[i].status)
 466                                 continue;
 467
 468                         hdev->stat.byte_rx += length;
 469
 470                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 471                                                 urb->transfer_buffer + offset,
 472                                                                 length) < 0) {
 473                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 474                                 hdev->stat.err_rx++;
 475                         }
 476                 }
 477         }
 478
 479         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 480                 return;
 481
 482         usb_anchor_urb(urb, &data->isoc_anchor);
 483
 484         err = usb_submit_urb(urb, GFP_ATOMIC);
 485         if (err < 0) {
 486                 /* -EPERM: urb is being killed;
 487                  * -ENODEV: device got disconnected */
 488                 if (err != -EPERM && err != -ENODEV)
 489                         BT_ERR("%s urb %p failed to resubmit (%d)",
 490                                                 hdev->name, urb, -err);
 491                 usb_unanchor_urb(urb);
 492         }
 493 }
 494
 495 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 496 {
 497         int i, offset = 0;
 498
 499         BT_DBG("len %d mtu %d", len, mtu);
 500
 501         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 502                                         i++, offset += mtu, len -= mtu) {
 503                 urb->iso_frame_desc[i].offset = offset;
 504                 urb->iso_frame_desc[i].length = mtu;
 505         }
 506
 507         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 508                 urb->iso_frame_desc[i].offset = offset;
 509                 urb->iso_frame_desc[i].length = len;
 510                 i++;
 511         }
 512
 513         urb->number_of_packets = i;
 514 }
 515
 516 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 517 {
 518         struct btusb_data *data = hci_get_drvdata(hdev);
 519         struct urb *urb;
 520         unsigned char *buf;
 521         unsigned int pipe;
 522         int err, size;
 523
 524         BT_DBG("%s", hdev->name);
 525
 526         if (!data->isoc_rx_ep)
 527                 return -ENODEV;
 528
 529         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 530         if (!urb)
 531                 return -ENOMEM;
 532
 533         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 534                                                 BTUSB_MAX_ISOC_FRAMES;
 535
 536         buf = kmalloc(size, mem_flags);
 537         if (!buf) {
 538                 usb_free_urb(urb);
 539                 return -ENOMEM;
 540         }
 541
 542         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 543
 544         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 545                                 hdev, data->isoc_rx_ep->bInterval);
 546
 547         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 548
 549         __fill_isoc_descriptor(urb, size,
 550                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 551
 552         usb_anchor_urb(urb, &data->isoc_anchor);
 553
 554         err = usb_submit_urb(urb, mem_flags);
 555         if (err < 0) {
 556                 if (err != -EPERM && err != -ENODEV)
 557                         BT_ERR("%s urb %p submission failed (%d)",
 558                                                 hdev->name, urb, -err);
 559                 usb_unanchor_urb(urb);
 560         }
 561
 562         usb_free_urb(urb);
 563
 564         return err;
 565 }
 566
 567 static void btusb_tx_complete(struct urb *urb)
 568 {
 569         struct sk_buff *skb = urb->context;
 570         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 571         struct btusb_data *data = hci_get_drvdata(hdev);
 572
 573         BT_DBG("%s urb %p status %d count %d", hdev->name,
 574                                         urb, urb->status, urb->actual_length);
 575
 576         if (!test_bit(HCI_RUNNING, &hdev->flags))
 577                 goto done;
 578
 579         if (!urb->status)
 580                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 581         else
 582                 hdev->stat.err_tx++;
 583
 584 done:
 585         spin_lock(&data->txlock);
 586         data->tx_in_flight--;
 587         spin_unlock(&data->txlock);
 588
 589         kfree(urb->setup_packet);
 590
 591         kfree_skb(skb);
 592 }
 593
 594 static void btusb_isoc_tx_complete(struct urb *urb)
 595 {
 596         struct sk_buff *skb = urb->context;
 597         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 598
 599         BT_DBG("%s urb %p status %d count %d", hdev->name,
 600                                         urb, urb->status, urb->actual_length);
 601
 602         if (!test_bit(HCI_RUNNING, &hdev->flags))
 603                 goto done;
 604
 605         if (!urb->status)
 606                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 607         else
 608                 hdev->stat.err_tx++;
 609
 610 done:
 611         kfree(urb->setup_packet);
 612
 613         kfree_skb(skb);
 614 }
 615
 616 static int btusb_open(struct hci_dev *hdev)
 617 {
 618         struct btusb_data *data = hci_get_drvdata(hdev);
 619         int err;
 620
 621         BT_DBG("%s", hdev->name);
 622
 623         err = usb_autopm_get_interface(data->intf);
 624         if (err < 0)
 625                 return err;
 626
 627         data->intf->needs_remote_wakeup = 1;
 628
 629         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 630                 goto done;
 631
 632         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 633                 goto done;
 634
 635         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 636         if (err < 0)
 637                 goto failed;
 638
 639         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 640         if (err < 0) {
 641                 usb_kill_anchored_urbs(&data->intr_anchor);
 642                 goto failed;
 643         }
 644
 645         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 646         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 647
 648 done:
 649         usb_autopm_put_interface(data->intf);
 650         return 0;
 651
 652 failed:
 653         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 654         clear_bit(HCI_RUNNING, &hdev->flags);
 655         usb_autopm_put_interface(data->intf);
 656         return err;
 657 }
 658
 659 static void btusb_stop_traffic(struct btusb_data *data)
 660 {
 661         usb_kill_anchored_urbs(&data->intr_anchor);
 662         usb_kill_anchored_urbs(&data->bulk_anchor);
 663         usb_kill_anchored_urbs(&data->isoc_anchor);
 664 }
 665
 666 static int btusb_close(struct hci_dev *hdev)
 667 {
 668         struct btusb_data *data = hci_get_drvdata(hdev);
 669         int err;
 670
 671         BT_DBG("%s", hdev->name);
 672
 673         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 674                 return 0;
 675
 676         cancel_work_sync(&data->work);
 677         cancel_work_sync(&data->waker);
 678
 679         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 680         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 681         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 682
 683         btusb_stop_traffic(data);
 684         err = usb_autopm_get_interface(data->intf);
 685         if (err < 0)
 686                 goto failed;
 687
 688         data->intf->needs_remote_wakeup = 0;
 689         usb_autopm_put_interface(data->intf);
 690
 691 failed:
 692         usb_scuttle_anchored_urbs(&data->deferred);
 693         return 0;
 694 }
 695
 696 static int btusb_flush(struct hci_dev *hdev)
 697 {
 698         struct btusb_data *data = hci_get_drvdata(hdev);
 699
 700         BT_DBG("%s", hdev->name);
 701
 702         usb_kill_anchored_urbs(&data->tx_anchor);
 703
 704         return 0;
 705 }
 706
 707 static int btusb_send_frame(struct sk_buff *skb)
 708 {
 709         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 710         struct btusb_data *data = hci_get_drvdata(hdev);
 711         struct usb_ctrlrequest *dr;
 712         struct urb *urb;
 713         unsigned int pipe;
 714         int err;
 715
 716         BT_DBG("%s", hdev->name);
 717
 718         if (!test_bit(HCI_RUNNING, &hdev->flags))
 719                 return -EBUSY;
 720
 721         switch (bt_cb(skb)->pkt_type) {
 722         case HCI_COMMAND_PKT:
 723                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 724                 if (!urb)
 725                         return -ENOMEM;
 726
 727                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 728                 if (!dr) {
 729                         usb_free_urb(urb);
 730                         return -ENOMEM;
 731                 }
 732
 733                 dr->bRequestType = data->cmdreq_type;
 734                 dr->bRequest     = 0;
 735                 dr->wIndex       = 0;
 736                 dr->wValue       = 0;
 737                 dr->wLength      = __cpu_to_le16(skb->len);
 738
 739                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 740
 741                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 742                                 skb->data, skb->len, btusb_tx_complete, skb);
 743
 744                 hdev->stat.cmd_tx++;
 745                 break;
 746
 747         case HCI_ACLDATA_PKT:
 748                 if (!data->bulk_tx_ep)
 749                         return -ENODEV;
 750
 751                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 752                 if (!urb)
 753                         return -ENOMEM;
 754
 755                 pipe = usb_sndbulkpipe(data->udev,
 756                                         data->bulk_tx_ep->bEndpointAddress);
 757
 758                 usb_fill_bulk_urb(urb, data->udev, pipe,
 759                                 skb->data, skb->len, btusb_tx_complete, skb);
 760
 761                 hdev->stat.acl_tx++;
 762                 break;
 763
 764         case HCI_SCODATA_PKT:
 765                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 766                         return -ENODEV;
 767
 768                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 769                 if (!urb)
 770                         return -ENOMEM;
 771
 772                 pipe = usb_sndisocpipe(data->udev,
 773                                         data->isoc_tx_ep->bEndpointAddress);
 774
 775                 usb_fill_int_urb(urb, data->udev, pipe,
 776                                 skb->data, skb->len, btusb_isoc_tx_complete,
 777                                 skb, data->isoc_tx_ep->bInterval);
 778
 779                 urb->transfer_flags  = URB_ISO_ASAP;
 780
 781                 __fill_isoc_descriptor(urb, skb->len,
 782                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 783
 784                 hdev->stat.sco_tx++;
 785                 goto skip_waking;
 786
 787         default:
 788                 return -EILSEQ;
 789         }
 790
 791         err = inc_tx(data);
 792         if (err) {
 793                 usb_anchor_urb(urb, &data->deferred);
 794                 schedule_work(&data->waker);
 795                 err = 0;
 796                 goto done;
 797         }
 798
 799 skip_waking:
 800         usb_anchor_urb(urb, &data->tx_anchor);
 801
 802         err = usb_submit_urb(urb, GFP_ATOMIC);
 803         if (err < 0) {
 804                 if (err != -EPERM && err != -ENODEV)
 805                         BT_ERR("%s urb %p submission failed (%d)",
 806                                                 hdev->name, urb, -err);
 807                 kfree(urb->setup_packet);
 808                 usb_unanchor_urb(urb);
 809         } else {
 810                 usb_mark_last_busy(data->udev);
 811         }
 812
 813 done:
 814         usb_free_urb(urb);
 815         return err;
 816 }
 817
 818 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 819 {
 820         struct btusb_data *data = hci_get_drvdata(hdev);
 821
 822         BT_DBG("%s evt %d", hdev->name, evt);
 823
 824         if (hdev->conn_hash.sco_num != data->sco_num) {
 825                 data->sco_num = hdev->conn_hash.sco_num;
 826                 schedule_work(&data->work);
 827         }
 828 }
 829
 830 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 831 {
 832         struct btusb_data *data = hci_get_drvdata(hdev);
 833         struct usb_interface *intf = data->isoc;
 834         struct usb_endpoint_descriptor *ep_desc;
 835         int i, err;
 836
 837         if (!data->isoc)
 838                 return -ENODEV;
 839
 840         err = usb_set_interface(data->udev, 1, altsetting);
 841         if (err < 0) {
 842                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 843                 return err;
 844         }
 845
 846         data->isoc_altsetting = altsetting;
 847
 848         data->isoc_tx_ep = NULL;
 849         data->isoc_rx_ep = NULL;
 850
 851         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 852                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 853
 854                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 855                         data->isoc_tx_ep = ep_desc;
 856                         continue;
 857                 }
 858
 859                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 860                         data->isoc_rx_ep = ep_desc;
 861                         continue;
 862                 }
 863         }
 864
 865         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 866                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 867                 return -ENODEV;
 868         }
 869
 870         return 0;
 871 }
 872
 873 static void btusb_work(struct work_struct *work)
 874 {
 875         struct btusb_data *data = container_of(work, struct btusb_data, work);
 876         struct hci_dev *hdev = data->hdev;
 877         int new_alts;
 878         int err;
 879
 880         if (hdev->conn_hash.sco_num > 0) {
 881                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 882                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 883                         if (err < 0) {
 884                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 885                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 886                                 return;
 887                         }
 888
 889                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 890                 }
 891
 892                 if (hdev->voice_setting & 0x0020) {
 893                         static const int alts[3] = { 2, 4, 5 };
 894                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 895                 } else {
 896                         new_alts = hdev->conn_hash.sco_num;
 897                 }
 898
 899                 if (data->isoc_altsetting != new_alts) {
 900                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 901                         usb_kill_anchored_urbs(&data->isoc_anchor);
 902
 903                         if (__set_isoc_interface(hdev, new_alts) < 0)
 904                                 return;
 905                 }
 906
 907                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 908                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 909                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 910                         else
 911                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 912                 }
 913         } else {
 914                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 915                 usb_kill_anchored_urbs(&data->isoc_anchor);
 916
 917                 __set_isoc_interface(hdev, 0);
 918                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 919                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 920         }
 921 }
 922
 923 static void btusb_waker(struct work_struct *work)
 924 {
 925         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 926         int err;
 927
 928         err = usb_autopm_get_interface(data->intf);
 929         if (err < 0)
 930                 return;
 931
 932         usb_autopm_put_interface(data->intf);
 933 }
 934
 935 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 936 {
 937         struct sk_buff *skb;
 938         u8 val = 0x00;
 939
 940         BT_DBG("%s", hdev->name);
 941
 942         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 943         if (IS_ERR(skb))
 944                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 945         else
 946                 kfree_skb(skb);
 947
 948         return 0;
 949 }
 950
 951 struct intel_version {
 952         u8 status;
 953         u8 hw_platform;
 954         u8 hw_variant;
 955         u8 hw_revision;
 956         u8 fw_variant;
 957         u8 fw_revision;
 958         u8 fw_build_num;
 959         u8 fw_build_ww;
 960         u8 fw_build_yy;
 961         u8 fw_patch_num;
 962 } __packed;
 963
 964 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 965                                                 struct intel_version *ver)
 966 {
 967         const struct firmware *fw;
 968         char fwname[64];
 969         int ret;
 970
 971         snprintf(fwname, sizeof(fwname),
 972                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 973                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 974                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 975                  ver->fw_build_ww, ver->fw_build_yy);
 976
 977         ret = request_firmware(&fw, fwname, &hdev->dev);
 978         if (ret < 0) {
 979                 if (ret == -EINVAL) {
 980                         BT_ERR("%s Intel firmware file request failed (%d)",
 981                                hdev->name, ret);
 982                         return NULL;
 983                 }
 984
 985                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 986                        hdev->name, fwname, ret);
 987
 988                 /* If the correct firmware patch file is not found, use the
 989                  * default firmware patch file instead
 990                  */
 991                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
 992                          ver->hw_platform, ver->hw_variant);
 993                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
 994                         BT_ERR("%s failed to open default Intel fw file: %s",
 995                                hdev->name, fwname);
 996                         return NULL;
 997                 }
 998         }
 999
1000         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1001
1002         return fw;
1003 }
1004
1005 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1006                                       const struct firmware *fw,
1007                                       const u8 **fw_ptr, int *disable_patch)
1008 {
1009         struct sk_buff *skb;
1010         struct hci_command_hdr *cmd;
1011         const u8 *cmd_param;
1012         struct hci_event_hdr *evt = NULL;
1013         const u8 *evt_param = NULL;
1014         int remain = fw->size - (*fw_ptr - fw->data);
1015
1016         /* The first byte indicates the types of the patch command or event.
1017          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1018          * in the current firmware buffer doesn't start with 0x01 or
1019          * the size of remain buffer is smaller than HCI command header,
1020          * the firmware file is corrupted and it should stop the patching
1021          * process.
1022          */
1023         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1024                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1025                 return -EINVAL;
1026         }
1027         (*fw_ptr)++;
1028         remain--;
1029
1030         cmd = (struct hci_command_hdr *)(*fw_ptr);
1031         *fw_ptr += sizeof(*cmd);
1032         remain -= sizeof(*cmd);
1033
1034         /* Ensure that the remain firmware data is long enough than the length
1035          * of command parameter. If not, the firmware file is corrupted.
1036          */
1037         if (remain < cmd->plen) {
1038                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1039                 return -EFAULT;
1040         }
1041
1042         /* If there is a command that loads a patch in the firmware
1043          * file, then enable the patch upon success, otherwise just
1044          * disable the manufacturer mode, for example patch activation
1045          * is not required when the default firmware patch file is used
1046          * because there are no patch data to load.
1047          */
1048         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1049                 *disable_patch = 0;
1050
1051         cmd_param = *fw_ptr;
1052         *fw_ptr += cmd->plen;
1053         remain -= cmd->plen;
1054
1055         /* This reads the expected events when the above command is sent to the
1056          * device. Some vendor commands expects more than one events, for
1057          * example command status event followed by vendor specific event.
1058          * For this case, it only keeps the last expected event. so the command
1059          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1060          * last expected event.
1061          */
1062         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1063                 (*fw_ptr)++;
1064                 remain--;
1065
1066                 evt = (struct hci_event_hdr *)(*fw_ptr);
1067                 *fw_ptr += sizeof(*evt);
1068                 remain -= sizeof(*evt);
1069
1070                 if (remain < evt->plen) {
1071                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1072                                hdev->name);
1073                         return -EFAULT;
1074                 }
1075
1076                 evt_param = *fw_ptr;
1077                 *fw_ptr += evt->plen;
1078                 remain -= evt->plen;
1079         }
1080
1081         /* Every HCI commands in the firmware file has its correspond event.
1082          * If event is not found or remain is smaller than zero, the firmware
1083          * file is corrupted.
1084          */
1085         if (!evt || !evt_param || remain < 0) {
1086                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1087                 return -EFAULT;
1088         }
1089
1090         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1091                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1092         if (IS_ERR(skb)) {
1093                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1094                        hdev->name, cmd->opcode, PTR_ERR(skb));
1095                 return -PTR_ERR(skb);
1096         }
1097
1098         /* It ensures that the returned event matches the event data read from
1099          * the firmware file. At fist, it checks the length and then
1100          * the contents of the event.
1101          */
1102         if (skb->len != evt->plen) {
1103                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1104                        le16_to_cpu(cmd->opcode));
1105                 kfree_skb(skb);
1106                 return -EFAULT;
1107         }
1108
1109         if (memcmp(skb->data, evt_param, evt->plen)) {
1110                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1111                        hdev->name, le16_to_cpu(cmd->opcode));
1112                 kfree_skb(skb);
1113                 return -EFAULT;
1114         }
1115         kfree_skb(skb);
1116
1117         return 0;
1118 }
1119
1120 static int btusb_setup_intel(struct hci_dev *hdev)
1121 {
1122         struct sk_buff *skb;
1123         const struct firmware *fw;
1124         const u8 *fw_ptr;
1125         int disable_patch;
1126         struct intel_version *ver;
1127
1128         const u8 mfg_enable[] = { 0x01, 0x00 };
1129         const u8 mfg_disable[] = { 0x00, 0x00 };
1130         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1131         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1132
1133         BT_DBG("%s", hdev->name);
1134
1135         /* The controller has a bug with the first HCI command sent to it
1136          * returning number of completed commands as zero. This would stall the
1137          * command processing in the Bluetooth core.
1138          *
1139          * As a workaround, send HCI Reset command first which will reset the
1140          * number of completed commands and allow normal command processing
1141          * from now on.
1142          */
1143         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1144         if (IS_ERR(skb)) {
1145                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1146                        hdev->name, PTR_ERR(skb));
1147                 return -PTR_ERR(skb);
1148         }
1149         kfree_skb(skb);
1150
1151         /* Read Intel specific controller version first to allow selection of
1152          * which firmware file to load.
1153          *
1154          * The returned information are hardware variant and revision plus
1155          * firmware variant, revision and build number.
1156          */
1157         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1158         if (IS_ERR(skb)) {
1159                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1160                        hdev->name, PTR_ERR(skb));
1161                 return -PTR_ERR(skb);
1162         }
1163
1164         if (skb->len != sizeof(*ver)) {
1165                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1166                 kfree_skb(skb);
1167                 return -EIO;
1168         }
1169
1170         ver = (struct intel_version *)skb->data;
1171         if (ver->status) {
1172                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1173                        ver->status);
1174                 kfree_skb(skb);
1175                 return -bt_to_errno(ver->status);
1176         }
1177
1178         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1179                 hdev->name, ver->hw_platform, ver->hw_variant,
1180                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1181                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1182                 ver->fw_patch_num);
1183
1184         /* fw_patch_num indicates the version of patch the device currently
1185          * have. If there is no patch data in the device, it is always 0x00.
1186          * So, if it is other than 0x00, no need to patch the deivce again.
1187          */
1188         if (ver->fw_patch_num) {
1189                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1190                         hdev->name, ver->fw_patch_num);
1191                 kfree_skb(skb);
1192                 return 0;
1193         }
1194
1195         /* Opens the firmware patch file based on the firmware version read
1196          * from the controller. If it fails to open the matching firmware
1197          * patch file, it tries to open the default firmware patch file.
1198          * If no patch file is found, allow the device to operate without
1199          * a patch.
1200          */
1201         fw = btusb_setup_intel_get_fw(hdev, ver);
1202         if (!fw) {
1203                 kfree_skb(skb);
1204                 return 0;
1205         }
1206         fw_ptr = fw->data;
1207
1208         /* This Intel specific command enables the manufacturer mode of the
1209          * controller.
1210          *
1211          * Only while this mode is enabled, the driver can download the
1212          * firmware patch data and configuration parameters.
1213          */
1214         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1215         if (IS_ERR(skb)) {
1216                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1217                        hdev->name, PTR_ERR(skb));
1218                 release_firmware(fw);
1219                 return -PTR_ERR(skb);
1220         }
1221
1222         if (skb->data[0]) {
1223                 u8 evt_status = skb->data[0];
1224                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1225                        hdev->name, evt_status);
1226                 kfree_skb(skb);
1227                 release_firmware(fw);
1228                 return -bt_to_errno(evt_status);
1229         }
1230         kfree_skb(skb);
1231
1232         disable_patch = 1;
1233
1234         /* The firmware data file consists of list of Intel specific HCI
1235          * commands and its expected events. The first byte indicates the
1236          * type of the message, either HCI command or HCI event.
1237          *
1238          * It reads the command and its expected event from the firmware file,
1239          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1240          * the returned event is compared with the event read from the firmware
1241          * file and it will continue until all the messages are downloaded to
1242          * the controller.
1243          *
1244          * Once the firmware patching is completed successfully,
1245          * the manufacturer mode is disabled with reset and activating the
1246          * downloaded patch.
1247          *
1248          * If the firmware patching fails, the manufacturer mode is
1249          * disabled with reset and deactivating the patch.
1250          *
1251          * If the default patch file is used, no reset is done when disabling
1252          * the manufacturer.
1253          */
1254         while (fw->size > fw_ptr - fw->data) {
1255                 int ret;
1256
1257                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1258                                                  &disable_patch);
1259                 if (ret < 0)
1260                         goto exit_mfg_deactivate;
1261         }
1262
1263         release_firmware(fw);
1264
1265         if (disable_patch)
1266                 goto exit_mfg_disable;
1267
1268         /* Patching completed successfully and disable the manufacturer mode
1269          * with reset and activate the downloaded firmware patches.
1270          */
1271         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1272                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1273         if (IS_ERR(skb)) {
1274                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1275                        hdev->name, PTR_ERR(skb));
1276                 return -PTR_ERR(skb);
1277         }
1278         kfree_skb(skb);
1279
1280         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1281                 hdev->name);
1282
1283         return 0;
1284
1285 exit_mfg_disable:
1286         /* Disable the manufacturer mode without reset */
1287         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1288                              HCI_INIT_TIMEOUT);
1289         if (IS_ERR(skb)) {
1290                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1291                        hdev->name, PTR_ERR(skb));
1292                 return -PTR_ERR(skb);
1293         }
1294         kfree_skb(skb);
1295
1296         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1297         return 0;
1298
1299 exit_mfg_deactivate:
1300         release_firmware(fw);
1301
1302         /* Patching failed. Disable the manufacturer mode with reset and
1303          * deactivate the downloaded firmware patches.
1304          */
1305         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1306                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1307         if (IS_ERR(skb)) {
1308                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1309                        hdev->name, PTR_ERR(skb));
1310                 return -PTR_ERR(skb);
1311         }
1312         kfree_skb(skb);
1313
1314         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1315                 hdev->name);
1316
1317         return 0;
1318 }
1319
1320 static int btusb_probe(struct usb_interface *intf,
1321                                 const struct usb_device_id *id)
1322 {
1323         struct usb_endpoint_descriptor *ep_desc;
1324         struct btusb_data *data;
1325         struct hci_dev *hdev;
1326         int i, err;
1327
1328         BT_DBG("intf %p id %p", intf, id);
1329
1330         /* interface numbers are hardcoded in the spec */
1331         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1332                 return -ENODEV;
1333
1334         if (!id->driver_info) {
1335                 const struct usb_device_id *match;
1336                 match = usb_match_id(intf, blacklist_table);
1337                 if (match)
1338                         id = match;
1339         }
1340
1341         if (id->driver_info == BTUSB_IGNORE)
1342                 return -ENODEV;
1343
1344         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1345                 return -ENODEV;
1346
1347         if (ignore_csr && id->driver_info & BTUSB_CSR)
1348                 return -ENODEV;
1349
1350         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1351                 return -ENODEV;
1352
1353         if (id->driver_info & BTUSB_ATH3012) {
1354                 struct usb_device *udev = interface_to_usbdev(intf);
1355
1356                 /* Old firmware would otherwise let ath3k driver load
1357                  * patch and sysconfig files */
1358                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1359                         return -ENODEV;
1360         }
1361
1362         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1363         if (!data)
1364                 return -ENOMEM;
1365
1366         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1367                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1368
1369                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1370                         data->intr_ep = ep_desc;
1371                         continue;
1372                 }
1373
1374                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1375                         data->bulk_tx_ep = ep_desc;
1376                         continue;
1377                 }
1378
1379                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1380                         data->bulk_rx_ep = ep_desc;
1381                         continue;
1382                 }
1383         }
1384
1385         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1386                 return -ENODEV;
1387
1388         data->cmdreq_type = USB_TYPE_CLASS;
1389
1390         data->udev = interface_to_usbdev(intf);
1391         data->intf = intf;
1392
1393         spin_lock_init(&data->lock);
1394
1395         INIT_WORK(&data->work, btusb_work);
1396         INIT_WORK(&data->waker, btusb_waker);
1397         spin_lock_init(&data->txlock);
1398
1399         init_usb_anchor(&data->tx_anchor);
1400         init_usb_anchor(&data->intr_anchor);
1401         init_usb_anchor(&data->bulk_anchor);
1402         init_usb_anchor(&data->isoc_anchor);
1403         init_usb_anchor(&data->deferred);
1404
1405         hdev = hci_alloc_dev();
1406         if (!hdev)
1407                 return -ENOMEM;
1408
1409         hdev->bus = HCI_USB;
1410         hci_set_drvdata(hdev, data);
1411
1412         data->hdev = hdev;
1413
1414         SET_HCIDEV_DEV(hdev, &intf->dev);
1415
1416         hdev->open   = btusb_open;
1417         hdev->close  = btusb_close;
1418         hdev->flush  = btusb_flush;
1419         hdev->send   = btusb_send_frame;
1420         hdev->notify = btusb_notify;
1421
1422         if (id->driver_info & BTUSB_BCM92035)
1423                 hdev->setup = btusb_setup_bcm92035;
1424
1425         if (id->driver_info & BTUSB_INTEL)
1426                 hdev->setup = btusb_setup_intel;
1427
1428         /* Interface numbers are hardcoded in the specification */
1429         data->isoc = usb_ifnum_to_if(data->udev, 1);
1430
1431         if (!reset)
1432                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1433
1434         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1435                 if (!disable_scofix)
1436                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1437         }
1438
1439         if (id->driver_info & BTUSB_BROKEN_ISOC)
1440                 data->isoc = NULL;
1441
1442         if (id->driver_info & BTUSB_DIGIANSWER) {
1443                 data->cmdreq_type = USB_TYPE_VENDOR;
1444                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1445         }
1446
1447         if (id->driver_info & BTUSB_CSR) {
1448                 struct usb_device *udev = data->udev;
1449
1450                 /* Old firmware would otherwise execute USB reset */
1451                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1452                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1453         }
1454
1455         if (id->driver_info & BTUSB_SNIFFER) {
1456                 struct usb_device *udev = data->udev;
1457
1458                 /* New sniffer firmware has crippled HCI interface */
1459                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1460                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1461
1462                 data->isoc = NULL;
1463         }
1464
1465         if (data->isoc) {
1466                 err = usb_driver_claim_interface(&btusb_driver,
1467                                                         data->isoc, data);
1468                 if (err < 0) {
1469                         hci_free_dev(hdev);
1470                         return err;
1471                 }
1472         }
1473
1474         err = hci_register_dev(hdev);
1475         if (err < 0) {
1476                 hci_free_dev(hdev);
1477                 return err;
1478         }
1479
1480         usb_set_intfdata(intf, data);
1481
1482         return 0;
1483 }
1484
1485 static void btusb_disconnect(struct usb_interface *intf)
1486 {
1487         struct btusb_data *data = usb_get_intfdata(intf);
1488         struct hci_dev *hdev;
1489
1490         BT_DBG("intf %p", intf);
1491
1492         if (!data)
1493                 return;
1494
1495         hdev = data->hdev;
1496         usb_set_intfdata(data->intf, NULL);
1497
1498         if (data->isoc)
1499                 usb_set_intfdata(data->isoc, NULL);
1500
1501         hci_unregister_dev(hdev);
1502
1503         if (intf == data->isoc)
1504                 usb_driver_release_interface(&btusb_driver, data->intf);
1505         else if (data->isoc)
1506                 usb_driver_release_interface(&btusb_driver, data->isoc);
1507
1508         hci_free_dev(hdev);
1509 }
1510
1511 #ifdef CONFIG_PM
1512 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1513 {
1514         struct btusb_data *data = usb_get_intfdata(intf);
1515
1516         BT_DBG("intf %p", intf);
1517
1518         if (data->suspend_count++)
1519                 return 0;
1520
1521         spin_lock_irq(&data->txlock);
1522         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1523                 set_bit(BTUSB_SUSPENDING, &data->flags);
1524                 spin_unlock_irq(&data->txlock);
1525         } else {
1526                 spin_unlock_irq(&data->txlock);
1527                 data->suspend_count--;
1528                 return -EBUSY;
1529         }
1530
1531         cancel_work_sync(&data->work);
1532
1533         btusb_stop_traffic(data);
1534         usb_kill_anchored_urbs(&data->tx_anchor);
1535
1536         return 0;
1537 }
1538
1539 static void play_deferred(struct btusb_data *data)
1540 {
1541         struct urb *urb;
1542         int err;
1543
1544         while ((urb = usb_get_from_anchor(&data->deferred))) {
1545                 err = usb_submit_urb(urb, GFP_ATOMIC);
1546                 if (err < 0)
1547                         break;
1548
1549                 data->tx_in_flight++;
1550         }
1551         usb_scuttle_anchored_urbs(&data->deferred);
1552 }
1553
1554 static int btusb_resume(struct usb_interface *intf)
1555 {
1556         struct btusb_data *data = usb_get_intfdata(intf);
1557         struct hci_dev *hdev = data->hdev;
1558         int err = 0;
1559
1560         BT_DBG("intf %p", intf);
1561
1562         if (--data->suspend_count)
1563                 return 0;
1564
1565         if (!test_bit(HCI_RUNNING, &hdev->flags))
1566                 goto done;
1567
1568         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1569                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1570                 if (err < 0) {
1571                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1572                         goto failed;
1573                 }
1574         }
1575
1576         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1577                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1578                 if (err < 0) {
1579                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1580                         goto failed;
1581                 }
1582
1583                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1584         }
1585
1586         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1587                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1588                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1589                 else
1590                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1591         }
1592
1593         spin_lock_irq(&data->txlock);
1594         play_deferred(data);
1595         clear_bit(BTUSB_SUSPENDING, &data->flags);
1596         spin_unlock_irq(&data->txlock);
1597         schedule_work(&data->work);
1598
1599         return 0;
1600
1601 failed:
1602         usb_scuttle_anchored_urbs(&data->deferred);
1603 done:
1604         spin_lock_irq(&data->txlock);
1605         clear_bit(BTUSB_SUSPENDING, &data->flags);
1606         spin_unlock_irq(&data->txlock);
1607
1608         return err;
1609 }
1610 #endif
1611
1612 static struct usb_driver btusb_driver = {
1613         .name           = "btusb",
1614         .probe          = btusb_probe,
1615         .disconnect     = btusb_disconnect,
1616 #ifdef CONFIG_PM
1617         .suspend        = btusb_suspend,
1618         .resume         = btusb_resume,
1619 #endif
1620         .id_table       = btusb_table,
1621         .supports_autosuspend = 1,
1622         .disable_hub_initiated_lpm = 1,
1623 };
1624
1625 module_usb_driver(btusb_driver);
1626
1627 module_param(ignore_dga, bool, 0644);
1628 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1629
1630 module_param(ignore_csr, bool, 0644);
1631 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1632
1633 module_param(ignore_sniffer, bool, 0644);
1634 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1635
1636 module_param(disable_scofix, bool, 0644);
1637 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1638
1639 module_param(force_scofix, bool, 0644);
1640 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1641
1642 module_param(reset, bool, 0644);
1643 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1644
1645 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1646 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1647 MODULE_VERSION(VERSION);
1648 MODULE_LICENSE("GPL");