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(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0489, 0xe042) },
 107         { USB_DEVICE(0x413c, 0x8197) },
 108
 109         /* Foxconn - Hon Hai */
 110         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 111
 112         /*Broadcom devices with vendor specific id */
 113         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 114
 115         { }     /* Terminating entry */
 116 };
 117
 118 MODULE_DEVICE_TABLE(usb, btusb_table);
 119
 120 static struct usb_device_id blacklist_table[] = {
 121         /* CSR BlueCore devices */
 122         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 123
 124         /* Broadcom BCM2033 without firmware */
 125         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 126
 127         /* Atheros 3011 with sflash firmware */
 128         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 129         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 131         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 132         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 134
 135         /* Atheros AR9285 Malbec with sflash firmware */
 136         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 137
 138         /* Atheros 3012 with sflash firmware */
 139         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 161
 162         /* Atheros AR5BBU12 with sflash firmware */
 163         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 164
 165         /* Atheros AR5BBU12 with sflash firmware */
 166         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 168
 169         /* Broadcom BCM2035 */
 170         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 171         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 172         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 173
 174         /* Broadcom BCM2045 */
 175         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 176         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 177
 178         /* IBM/Lenovo ThinkPad with Broadcom chip */
 179         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 180         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 181
 182         /* HP laptop with Broadcom chip */
 183         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 184
 185         /* Dell laptop with Broadcom chip */
 186         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 187
 188         /* Dell Wireless 370 and 410 devices */
 189         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 190         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 191
 192         /* Belkin F8T012 and F8T013 devices */
 193         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 194         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196         /* Asus WL-BTD202 device */
 197         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Kensington Bluetooth USB adapter */
 200         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* RTX Telecom based adapters with buggy SCO support */
 203         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 204         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 205
 206         /* CONWISE Technology based adapters with buggy SCO support */
 207         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 208
 209         /* Digianswer devices */
 210         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 211         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 212
 213         /* CSR BlueCore Bluetooth Sniffer */
 214         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 215
 216         /* Frontline ComProbe Bluetooth Sniffer */
 217         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 218
 219         /* Intel Bluetooth device */
 220         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 221
 222         { }     /* Terminating entry */
 223 };
 224
 225 #define BTUSB_MAX_ISOC_FRAMES   10
 226
 227 #define BTUSB_INTR_RUNNING      0
 228 #define BTUSB_BULK_RUNNING      1
 229 #define BTUSB_ISOC_RUNNING      2
 230 #define BTUSB_SUSPENDING        3
 231 #define BTUSB_DID_ISO_RESUME    4
 232
 233 struct btusb_data {
 234         struct hci_dev       *hdev;
 235         struct usb_device    *udev;
 236         struct usb_interface *intf;
 237         struct usb_interface *isoc;
 238
 239         spinlock_t lock;
 240
 241         unsigned long flags;
 242
 243         struct work_struct work;
 244         struct work_struct waker;
 245
 246         struct usb_anchor tx_anchor;
 247         struct usb_anchor intr_anchor;
 248         struct usb_anchor bulk_anchor;
 249         struct usb_anchor isoc_anchor;
 250         struct usb_anchor deferred;
 251         int tx_in_flight;
 252         spinlock_t txlock;
 253
 254         struct usb_endpoint_descriptor *intr_ep;
 255         struct usb_endpoint_descriptor *bulk_tx_ep;
 256         struct usb_endpoint_descriptor *bulk_rx_ep;
 257         struct usb_endpoint_descriptor *isoc_tx_ep;
 258         struct usb_endpoint_descriptor *isoc_rx_ep;
 259
 260         __u8 cmdreq_type;
 261
 262         unsigned int sco_num;
 263         int isoc_altsetting;
 264         int suspend_count;
 265 };
 266
 267 static int inc_tx(struct btusb_data *data)
 268 {
 269         unsigned long flags;
 270         int rv;
 271
 272         spin_lock_irqsave(&data->txlock, flags);
 273         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 274         if (!rv)
 275                 data->tx_in_flight++;
 276         spin_unlock_irqrestore(&data->txlock, flags);
 277
 278         return rv;
 279 }
 280
 281 static void btusb_intr_complete(struct urb *urb)
 282 {
 283         struct hci_dev *hdev = urb->context;
 284         struct btusb_data *data = hci_get_drvdata(hdev);
 285         int err;
 286
 287         BT_DBG("%s urb %p status %d count %d", hdev->name,
 288                                         urb, urb->status, urb->actual_length);
 289
 290         if (!test_bit(HCI_RUNNING, &hdev->flags))
 291                 return;
 292
 293         if (urb->status == 0) {
 294                 hdev->stat.byte_rx += urb->actual_length;
 295
 296                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 297                                                 urb->transfer_buffer,
 298                                                 urb->actual_length) < 0) {
 299                         BT_ERR("%s corrupted event packet", hdev->name);
 300                         hdev->stat.err_rx++;
 301                 }
 302         }
 303
 304         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 305                 return;
 306
 307         usb_mark_last_busy(data->udev);
 308         usb_anchor_urb(urb, &data->intr_anchor);
 309
 310         err = usb_submit_urb(urb, GFP_ATOMIC);
 311         if (err < 0) {
 312                 /* -EPERM: urb is being killed;
 313                  * -ENODEV: device got disconnected */
 314                 if (err != -EPERM && err != -ENODEV)
 315                         BT_ERR("%s urb %p failed to resubmit (%d)",
 316                                                 hdev->name, urb, -err);
 317                 usb_unanchor_urb(urb);
 318         }
 319 }
 320
 321 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 322 {
 323         struct btusb_data *data = hci_get_drvdata(hdev);
 324         struct urb *urb;
 325         unsigned char *buf;
 326         unsigned int pipe;
 327         int err, size;
 328
 329         BT_DBG("%s", hdev->name);
 330
 331         if (!data->intr_ep)
 332                 return -ENODEV;
 333
 334         urb = usb_alloc_urb(0, mem_flags);
 335         if (!urb)
 336                 return -ENOMEM;
 337
 338         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 339
 340         buf = kmalloc(size, mem_flags);
 341         if (!buf) {
 342                 usb_free_urb(urb);
 343                 return -ENOMEM;
 344         }
 345
 346         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 347
 348         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 349                                                 btusb_intr_complete, hdev,
 350                                                 data->intr_ep->bInterval);
 351
 352         urb->transfer_flags |= URB_FREE_BUFFER;
 353
 354         usb_anchor_urb(urb, &data->intr_anchor);
 355
 356         err = usb_submit_urb(urb, mem_flags);
 357         if (err < 0) {
 358                 if (err != -EPERM && err != -ENODEV)
 359                         BT_ERR("%s urb %p submission failed (%d)",
 360                                                 hdev->name, urb, -err);
 361                 usb_unanchor_urb(urb);
 362         }
 363
 364         usb_free_urb(urb);
 365
 366         return err;
 367 }
 368
 369 static void btusb_bulk_complete(struct urb *urb)
 370 {
 371         struct hci_dev *hdev = urb->context;
 372         struct btusb_data *data = hci_get_drvdata(hdev);
 373         int err;
 374
 375         BT_DBG("%s urb %p status %d count %d", hdev->name,
 376                                         urb, urb->status, urb->actual_length);
 377
 378         if (!test_bit(HCI_RUNNING, &hdev->flags))
 379                 return;
 380
 381         if (urb->status == 0) {
 382                 hdev->stat.byte_rx += urb->actual_length;
 383
 384                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 385                                                 urb->transfer_buffer,
 386                                                 urb->actual_length) < 0) {
 387                         BT_ERR("%s corrupted ACL packet", hdev->name);
 388                         hdev->stat.err_rx++;
 389                 }
 390         }
 391
 392         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 393                 return;
 394
 395         usb_anchor_urb(urb, &data->bulk_anchor);
 396         usb_mark_last_busy(data->udev);
 397
 398         err = usb_submit_urb(urb, GFP_ATOMIC);
 399         if (err < 0) {
 400                 /* -EPERM: urb is being killed;
 401                  * -ENODEV: device got disconnected */
 402                 if (err != -EPERM && err != -ENODEV)
 403                         BT_ERR("%s urb %p failed to resubmit (%d)",
 404                                                 hdev->name, urb, -err);
 405                 usb_unanchor_urb(urb);
 406         }
 407 }
 408
 409 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 410 {
 411         struct btusb_data *data = hci_get_drvdata(hdev);
 412         struct urb *urb;
 413         unsigned char *buf;
 414         unsigned int pipe;
 415         int err, size = HCI_MAX_FRAME_SIZE;
 416
 417         BT_DBG("%s", hdev->name);
 418
 419         if (!data->bulk_rx_ep)
 420                 return -ENODEV;
 421
 422         urb = usb_alloc_urb(0, mem_flags);
 423         if (!urb)
 424                 return -ENOMEM;
 425
 426         buf = kmalloc(size, mem_flags);
 427         if (!buf) {
 428                 usb_free_urb(urb);
 429                 return -ENOMEM;
 430         }
 431
 432         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 433
 434         usb_fill_bulk_urb(urb, data->udev, pipe,
 435                                         buf, size, btusb_bulk_complete, hdev);
 436
 437         urb->transfer_flags |= URB_FREE_BUFFER;
 438
 439         usb_mark_last_busy(data->udev);
 440         usb_anchor_urb(urb, &data->bulk_anchor);
 441
 442         err = usb_submit_urb(urb, mem_flags);
 443         if (err < 0) {
 444                 if (err != -EPERM && err != -ENODEV)
 445                         BT_ERR("%s urb %p submission failed (%d)",
 446                                                 hdev->name, urb, -err);
 447                 usb_unanchor_urb(urb);
 448         }
 449
 450         usb_free_urb(urb);
 451
 452         return err;
 453 }
 454
 455 static void btusb_isoc_complete(struct urb *urb)
 456 {
 457         struct hci_dev *hdev = urb->context;
 458         struct btusb_data *data = hci_get_drvdata(hdev);
 459         int i, err;
 460
 461         BT_DBG("%s urb %p status %d count %d", hdev->name,
 462                                         urb, urb->status, urb->actual_length);
 463
 464         if (!test_bit(HCI_RUNNING, &hdev->flags))
 465                 return;
 466
 467         if (urb->status == 0) {
 468                 for (i = 0; i < urb->number_of_packets; i++) {
 469                         unsigned int offset = urb->iso_frame_desc[i].offset;
 470                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 471
 472                         if (urb->iso_frame_desc[i].status)
 473                                 continue;
 474
 475                         hdev->stat.byte_rx += length;
 476
 477                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 478                                                 urb->transfer_buffer + offset,
 479                                                                 length) < 0) {
 480                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 481                                 hdev->stat.err_rx++;
 482                         }
 483                 }
 484         }
 485
 486         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 487                 return;
 488
 489         usb_anchor_urb(urb, &data->isoc_anchor);
 490
 491         err = usb_submit_urb(urb, GFP_ATOMIC);
 492         if (err < 0) {
 493                 /* -EPERM: urb is being killed;
 494                  * -ENODEV: device got disconnected */
 495                 if (err != -EPERM && err != -ENODEV)
 496                         BT_ERR("%s urb %p failed to resubmit (%d)",
 497                                                 hdev->name, urb, -err);
 498                 usb_unanchor_urb(urb);
 499         }
 500 }
 501
 502 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 503 {
 504         int i, offset = 0;
 505
 506         BT_DBG("len %d mtu %d", len, mtu);
 507
 508         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 509                                         i++, offset += mtu, len -= mtu) {
 510                 urb->iso_frame_desc[i].offset = offset;
 511                 urb->iso_frame_desc[i].length = mtu;
 512         }
 513
 514         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 515                 urb->iso_frame_desc[i].offset = offset;
 516                 urb->iso_frame_desc[i].length = len;
 517                 i++;
 518         }
 519
 520         urb->number_of_packets = i;
 521 }
 522
 523 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 524 {
 525         struct btusb_data *data = hci_get_drvdata(hdev);
 526         struct urb *urb;
 527         unsigned char *buf;
 528         unsigned int pipe;
 529         int err, size;
 530
 531         BT_DBG("%s", hdev->name);
 532
 533         if (!data->isoc_rx_ep)
 534                 return -ENODEV;
 535
 536         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 537         if (!urb)
 538                 return -ENOMEM;
 539
 540         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 541                                                 BTUSB_MAX_ISOC_FRAMES;
 542
 543         buf = kmalloc(size, mem_flags);
 544         if (!buf) {
 545                 usb_free_urb(urb);
 546                 return -ENOMEM;
 547         }
 548
 549         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 550
 551         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 552                                 hdev, data->isoc_rx_ep->bInterval);
 553
 554         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 555
 556         __fill_isoc_descriptor(urb, size,
 557                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 558
 559         usb_anchor_urb(urb, &data->isoc_anchor);
 560
 561         err = usb_submit_urb(urb, mem_flags);
 562         if (err < 0) {
 563                 if (err != -EPERM && err != -ENODEV)
 564                         BT_ERR("%s urb %p submission failed (%d)",
 565                                                 hdev->name, urb, -err);
 566                 usb_unanchor_urb(urb);
 567         }
 568
 569         usb_free_urb(urb);
 570
 571         return err;
 572 }
 573
 574 static void btusb_tx_complete(struct urb *urb)
 575 {
 576         struct sk_buff *skb = urb->context;
 577         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 578         struct btusb_data *data = hci_get_drvdata(hdev);
 579
 580         BT_DBG("%s urb %p status %d count %d", hdev->name,
 581                                         urb, urb->status, urb->actual_length);
 582
 583         if (!test_bit(HCI_RUNNING, &hdev->flags))
 584                 goto done;
 585
 586         if (!urb->status)
 587                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 588         else
 589                 hdev->stat.err_tx++;
 590
 591 done:
 592         spin_lock(&data->txlock);
 593         data->tx_in_flight--;
 594         spin_unlock(&data->txlock);
 595
 596         kfree(urb->setup_packet);
 597
 598         kfree_skb(skb);
 599 }
 600
 601 static void btusb_isoc_tx_complete(struct urb *urb)
 602 {
 603         struct sk_buff *skb = urb->context;
 604         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 605
 606         BT_DBG("%s urb %p status %d count %d", hdev->name,
 607                                         urb, urb->status, urb->actual_length);
 608
 609         if (!test_bit(HCI_RUNNING, &hdev->flags))
 610                 goto done;
 611
 612         if (!urb->status)
 613                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 614         else
 615                 hdev->stat.err_tx++;
 616
 617 done:
 618         kfree(urb->setup_packet);
 619
 620         kfree_skb(skb);
 621 }
 622
 623 static int btusb_open(struct hci_dev *hdev)
 624 {
 625         struct btusb_data *data = hci_get_drvdata(hdev);
 626         int err;
 627
 628         BT_DBG("%s", hdev->name);
 629
 630         err = usb_autopm_get_interface(data->intf);
 631         if (err < 0)
 632                 return err;
 633
 634         data->intf->needs_remote_wakeup = 1;
 635
 636         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 637                 goto done;
 638
 639         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 640                 goto done;
 641
 642         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 643         if (err < 0)
 644                 goto failed;
 645
 646         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 647         if (err < 0) {
 648                 usb_kill_anchored_urbs(&data->intr_anchor);
 649                 goto failed;
 650         }
 651
 652         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 653         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 654
 655 done:
 656         usb_autopm_put_interface(data->intf);
 657         return 0;
 658
 659 failed:
 660         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 661         clear_bit(HCI_RUNNING, &hdev->flags);
 662         usb_autopm_put_interface(data->intf);
 663         return err;
 664 }
 665
 666 static void btusb_stop_traffic(struct btusb_data *data)
 667 {
 668         usb_kill_anchored_urbs(&data->intr_anchor);
 669         usb_kill_anchored_urbs(&data->bulk_anchor);
 670         usb_kill_anchored_urbs(&data->isoc_anchor);
 671 }
 672
 673 static int btusb_close(struct hci_dev *hdev)
 674 {
 675         struct btusb_data *data = hci_get_drvdata(hdev);
 676         int err;
 677
 678         BT_DBG("%s", hdev->name);
 679
 680         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 681                 return 0;
 682
 683         cancel_work_sync(&data->work);
 684         cancel_work_sync(&data->waker);
 685
 686         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 687         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 688         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 689
 690         btusb_stop_traffic(data);
 691         err = usb_autopm_get_interface(data->intf);
 692         if (err < 0)
 693                 goto failed;
 694
 695         data->intf->needs_remote_wakeup = 0;
 696         usb_autopm_put_interface(data->intf);
 697
 698 failed:
 699         usb_scuttle_anchored_urbs(&data->deferred);
 700         return 0;
 701 }
 702
 703 static int btusb_flush(struct hci_dev *hdev)
 704 {
 705         struct btusb_data *data = hci_get_drvdata(hdev);
 706
 707         BT_DBG("%s", hdev->name);
 708
 709         usb_kill_anchored_urbs(&data->tx_anchor);
 710
 711         return 0;
 712 }
 713
 714 static int btusb_send_frame(struct sk_buff *skb)
 715 {
 716         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 717         struct btusb_data *data = hci_get_drvdata(hdev);
 718         struct usb_ctrlrequest *dr;
 719         struct urb *urb;
 720         unsigned int pipe;
 721         int err;
 722
 723         BT_DBG("%s", hdev->name);
 724
 725         if (!test_bit(HCI_RUNNING, &hdev->flags))
 726                 return -EBUSY;
 727
 728         switch (bt_cb(skb)->pkt_type) {
 729         case HCI_COMMAND_PKT:
 730                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 731                 if (!urb)
 732                         return -ENOMEM;
 733
 734                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 735                 if (!dr) {
 736                         usb_free_urb(urb);
 737                         return -ENOMEM;
 738                 }
 739
 740                 dr->bRequestType = data->cmdreq_type;
 741                 dr->bRequest     = 0;
 742                 dr->wIndex       = 0;
 743                 dr->wValue       = 0;
 744                 dr->wLength      = __cpu_to_le16(skb->len);
 745
 746                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 747
 748                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 749                                 skb->data, skb->len, btusb_tx_complete, skb);
 750
 751                 hdev->stat.cmd_tx++;
 752                 break;
 753
 754         case HCI_ACLDATA_PKT:
 755                 if (!data->bulk_tx_ep)
 756                         return -ENODEV;
 757
 758                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 759                 if (!urb)
 760                         return -ENOMEM;
 761
 762                 pipe = usb_sndbulkpipe(data->udev,
 763                                         data->bulk_tx_ep->bEndpointAddress);
 764
 765                 usb_fill_bulk_urb(urb, data->udev, pipe,
 766                                 skb->data, skb->len, btusb_tx_complete, skb);
 767
 768                 hdev->stat.acl_tx++;
 769                 break;
 770
 771         case HCI_SCODATA_PKT:
 772                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 773                         return -ENODEV;
 774
 775                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 776                 if (!urb)
 777                         return -ENOMEM;
 778
 779                 pipe = usb_sndisocpipe(data->udev,
 780                                         data->isoc_tx_ep->bEndpointAddress);
 781
 782                 usb_fill_int_urb(urb, data->udev, pipe,
 783                                 skb->data, skb->len, btusb_isoc_tx_complete,
 784                                 skb, data->isoc_tx_ep->bInterval);
 785
 786                 urb->transfer_flags  = URB_ISO_ASAP;
 787
 788                 __fill_isoc_descriptor(urb, skb->len,
 789                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 790
 791                 hdev->stat.sco_tx++;
 792                 goto skip_waking;
 793
 794         default:
 795                 return -EILSEQ;
 796         }
 797
 798         err = inc_tx(data);
 799         if (err) {
 800                 usb_anchor_urb(urb, &data->deferred);
 801                 schedule_work(&data->waker);
 802                 err = 0;
 803                 goto done;
 804         }
 805
 806 skip_waking:
 807         usb_anchor_urb(urb, &data->tx_anchor);
 808
 809         err = usb_submit_urb(urb, GFP_ATOMIC);
 810         if (err < 0) {
 811                 if (err != -EPERM && err != -ENODEV)
 812                         BT_ERR("%s urb %p submission failed (%d)",
 813                                                 hdev->name, urb, -err);
 814                 kfree(urb->setup_packet);
 815                 usb_unanchor_urb(urb);
 816         } else {
 817                 usb_mark_last_busy(data->udev);
 818         }
 819
 820 done:
 821         usb_free_urb(urb);
 822         return err;
 823 }
 824
 825 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 826 {
 827         struct btusb_data *data = hci_get_drvdata(hdev);
 828
 829         BT_DBG("%s evt %d", hdev->name, evt);
 830
 831         if (hdev->conn_hash.sco_num != data->sco_num) {
 832                 data->sco_num = hdev->conn_hash.sco_num;
 833                 schedule_work(&data->work);
 834         }
 835 }
 836
 837 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 838 {
 839         struct btusb_data *data = hci_get_drvdata(hdev);
 840         struct usb_interface *intf = data->isoc;
 841         struct usb_endpoint_descriptor *ep_desc;
 842         int i, err;
 843
 844         if (!data->isoc)
 845                 return -ENODEV;
 846
 847         err = usb_set_interface(data->udev, 1, altsetting);
 848         if (err < 0) {
 849                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 850                 return err;
 851         }
 852
 853         data->isoc_altsetting = altsetting;
 854
 855         data->isoc_tx_ep = NULL;
 856         data->isoc_rx_ep = NULL;
 857
 858         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 859                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 860
 861                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 862                         data->isoc_tx_ep = ep_desc;
 863                         continue;
 864                 }
 865
 866                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 867                         data->isoc_rx_ep = ep_desc;
 868                         continue;
 869                 }
 870         }
 871
 872         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 873                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 874                 return -ENODEV;
 875         }
 876
 877         return 0;
 878 }
 879
 880 static void btusb_work(struct work_struct *work)
 881 {
 882         struct btusb_data *data = container_of(work, struct btusb_data, work);
 883         struct hci_dev *hdev = data->hdev;
 884         int new_alts;
 885         int err;
 886
 887         if (hdev->conn_hash.sco_num > 0) {
 888                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 889                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 890                         if (err < 0) {
 891                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 892                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 893                                 return;
 894                         }
 895
 896                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 897                 }
 898
 899                 if (hdev->voice_setting & 0x0020) {
 900                         static const int alts[3] = { 2, 4, 5 };
 901                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 902                 } else {
 903                         new_alts = hdev->conn_hash.sco_num;
 904                 }
 905
 906                 if (data->isoc_altsetting != new_alts) {
 907                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 908                         usb_kill_anchored_urbs(&data->isoc_anchor);
 909
 910                         if (__set_isoc_interface(hdev, new_alts) < 0)
 911                                 return;
 912                 }
 913
 914                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 915                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 916                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 917                         else
 918                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 919                 }
 920         } else {
 921                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 922                 usb_kill_anchored_urbs(&data->isoc_anchor);
 923
 924                 __set_isoc_interface(hdev, 0);
 925                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 926                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 927         }
 928 }
 929
 930 static void btusb_waker(struct work_struct *work)
 931 {
 932         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 933         int err;
 934
 935         err = usb_autopm_get_interface(data->intf);
 936         if (err < 0)
 937                 return;
 938
 939         usb_autopm_put_interface(data->intf);
 940 }
 941
 942 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 943 {
 944         struct sk_buff *skb;
 945         u8 val = 0x00;
 946
 947         BT_DBG("%s", hdev->name);
 948
 949         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 950         if (IS_ERR(skb))
 951                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 952         else
 953                 kfree_skb(skb);
 954
 955         return 0;
 956 }
 957
 958 struct intel_version {
 959         u8 status;
 960         u8 hw_platform;
 961         u8 hw_variant;
 962         u8 hw_revision;
 963         u8 fw_variant;
 964         u8 fw_revision;
 965         u8 fw_build_num;
 966         u8 fw_build_ww;
 967         u8 fw_build_yy;
 968         u8 fw_patch_num;
 969 } __packed;
 970
 971 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 972                                                 struct intel_version *ver)
 973 {
 974         const struct firmware *fw;
 975         char fwname[64];
 976         int ret;
 977
 978         snprintf(fwname, sizeof(fwname),
 979                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 980                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 981                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 982                  ver->fw_build_ww, ver->fw_build_yy);
 983
 984         ret = request_firmware(&fw, fwname, &hdev->dev);
 985         if (ret < 0) {
 986                 if (ret == -EINVAL) {
 987                         BT_ERR("%s Intel firmware file request failed (%d)",
 988                                hdev->name, ret);
 989                         return NULL;
 990                 }
 991
 992                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 993                        hdev->name, fwname, ret);
 994
 995                 /* If the correct firmware patch file is not found, use the
 996                  * default firmware patch file instead
 997                  */
 998                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
 999                          ver->hw_platform, ver->hw_variant);
1000                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1001                         BT_ERR("%s failed to open default Intel fw file: %s",
1002                                hdev->name, fwname);
1003                         return NULL;
1004                 }
1005         }
1006
1007         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1008
1009         return fw;
1010 }
1011
1012 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1013                                       const struct firmware *fw,
1014                                       const u8 **fw_ptr, int *disable_patch)
1015 {
1016         struct sk_buff *skb;
1017         struct hci_command_hdr *cmd;
1018         const u8 *cmd_param;
1019         struct hci_event_hdr *evt = NULL;
1020         const u8 *evt_param = NULL;
1021         int remain = fw->size - (*fw_ptr - fw->data);
1022
1023         /* The first byte indicates the types of the patch command or event.
1024          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1025          * in the current firmware buffer doesn't start with 0x01 or
1026          * the size of remain buffer is smaller than HCI command header,
1027          * the firmware file is corrupted and it should stop the patching
1028          * process.
1029          */
1030         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1031                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1032                 return -EINVAL;
1033         }
1034         (*fw_ptr)++;
1035         remain--;
1036
1037         cmd = (struct hci_command_hdr *)(*fw_ptr);
1038         *fw_ptr += sizeof(*cmd);
1039         remain -= sizeof(*cmd);
1040
1041         /* Ensure that the remain firmware data is long enough than the length
1042          * of command parameter. If not, the firmware file is corrupted.
1043          */
1044         if (remain < cmd->plen) {
1045                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1046                 return -EFAULT;
1047         }
1048
1049         /* If there is a command that loads a patch in the firmware
1050          * file, then enable the patch upon success, otherwise just
1051          * disable the manufacturer mode, for example patch activation
1052          * is not required when the default firmware patch file is used
1053          * because there are no patch data to load.
1054          */
1055         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1056                 *disable_patch = 0;
1057
1058         cmd_param = *fw_ptr;
1059         *fw_ptr += cmd->plen;
1060         remain -= cmd->plen;
1061
1062         /* This reads the expected events when the above command is sent to the
1063          * device. Some vendor commands expects more than one events, for
1064          * example command status event followed by vendor specific event.
1065          * For this case, it only keeps the last expected event. so the command
1066          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1067          * last expected event.
1068          */
1069         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1070                 (*fw_ptr)++;
1071                 remain--;
1072
1073                 evt = (struct hci_event_hdr *)(*fw_ptr);
1074                 *fw_ptr += sizeof(*evt);
1075                 remain -= sizeof(*evt);
1076
1077                 if (remain < evt->plen) {
1078                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1079                                hdev->name);
1080                         return -EFAULT;
1081                 }
1082
1083                 evt_param = *fw_ptr;
1084                 *fw_ptr += evt->plen;
1085                 remain -= evt->plen;
1086         }
1087
1088         /* Every HCI commands in the firmware file has its correspond event.
1089          * If event is not found or remain is smaller than zero, the firmware
1090          * file is corrupted.
1091          */
1092         if (!evt || !evt_param || remain < 0) {
1093                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1094                 return -EFAULT;
1095         }
1096
1097         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1098                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1099         if (IS_ERR(skb)) {
1100                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1101                        hdev->name, cmd->opcode, PTR_ERR(skb));
1102                 return PTR_ERR(skb);
1103         }
1104
1105         /* It ensures that the returned event matches the event data read from
1106          * the firmware file. At fist, it checks the length and then
1107          * the contents of the event.
1108          */
1109         if (skb->len != evt->plen) {
1110                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1111                        le16_to_cpu(cmd->opcode));
1112                 kfree_skb(skb);
1113                 return -EFAULT;
1114         }
1115
1116         if (memcmp(skb->data, evt_param, evt->plen)) {
1117                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1118                        hdev->name, le16_to_cpu(cmd->opcode));
1119                 kfree_skb(skb);
1120                 return -EFAULT;
1121         }
1122         kfree_skb(skb);
1123
1124         return 0;
1125 }
1126
1127 static int btusb_setup_intel(struct hci_dev *hdev)
1128 {
1129         struct sk_buff *skb;
1130         const struct firmware *fw;
1131         const u8 *fw_ptr;
1132         int disable_patch;
1133         struct intel_version *ver;
1134
1135         const u8 mfg_enable[] = { 0x01, 0x00 };
1136         const u8 mfg_disable[] = { 0x00, 0x00 };
1137         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1138         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1139
1140         BT_DBG("%s", hdev->name);
1141
1142         /* The controller has a bug with the first HCI command sent to it
1143          * returning number of completed commands as zero. This would stall the
1144          * command processing in the Bluetooth core.
1145          *
1146          * As a workaround, send HCI Reset command first which will reset the
1147          * number of completed commands and allow normal command processing
1148          * from now on.
1149          */
1150         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1151         if (IS_ERR(skb)) {
1152                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1153                        hdev->name, PTR_ERR(skb));
1154                 return PTR_ERR(skb);
1155         }
1156         kfree_skb(skb);
1157
1158         /* Read Intel specific controller version first to allow selection of
1159          * which firmware file to load.
1160          *
1161          * The returned information are hardware variant and revision plus
1162          * firmware variant, revision and build number.
1163          */
1164         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1165         if (IS_ERR(skb)) {
1166                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1167                        hdev->name, PTR_ERR(skb));
1168                 return PTR_ERR(skb);
1169         }
1170
1171         if (skb->len != sizeof(*ver)) {
1172                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1173                 kfree_skb(skb);
1174                 return -EIO;
1175         }
1176
1177         ver = (struct intel_version *)skb->data;
1178         if (ver->status) {
1179                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1180                        ver->status);
1181                 kfree_skb(skb);
1182                 return -bt_to_errno(ver->status);
1183         }
1184
1185         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1186                 hdev->name, ver->hw_platform, ver->hw_variant,
1187                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1188                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1189                 ver->fw_patch_num);
1190
1191         /* fw_patch_num indicates the version of patch the device currently
1192          * have. If there is no patch data in the device, it is always 0x00.
1193          * So, if it is other than 0x00, no need to patch the deivce again.
1194          */
1195         if (ver->fw_patch_num) {
1196                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1197                         hdev->name, ver->fw_patch_num);
1198                 kfree_skb(skb);
1199                 return 0;
1200         }
1201
1202         /* Opens the firmware patch file based on the firmware version read
1203          * from the controller. If it fails to open the matching firmware
1204          * patch file, it tries to open the default firmware patch file.
1205          * If no patch file is found, allow the device to operate without
1206          * a patch.
1207          */
1208         fw = btusb_setup_intel_get_fw(hdev, ver);
1209         if (!fw) {
1210                 kfree_skb(skb);
1211                 return 0;
1212         }
1213         fw_ptr = fw->data;
1214
1215         /* This Intel specific command enables the manufacturer mode of the
1216          * controller.
1217          *
1218          * Only while this mode is enabled, the driver can download the
1219          * firmware patch data and configuration parameters.
1220          */
1221         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1222         if (IS_ERR(skb)) {
1223                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1224                        hdev->name, PTR_ERR(skb));
1225                 release_firmware(fw);
1226                 return PTR_ERR(skb);
1227         }
1228
1229         if (skb->data[0]) {
1230                 u8 evt_status = skb->data[0];
1231                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1232                        hdev->name, evt_status);
1233                 kfree_skb(skb);
1234                 release_firmware(fw);
1235                 return -bt_to_errno(evt_status);
1236         }
1237         kfree_skb(skb);
1238
1239         disable_patch = 1;
1240
1241         /* The firmware data file consists of list of Intel specific HCI
1242          * commands and its expected events. The first byte indicates the
1243          * type of the message, either HCI command or HCI event.
1244          *
1245          * It reads the command and its expected event from the firmware file,
1246          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1247          * the returned event is compared with the event read from the firmware
1248          * file and it will continue until all the messages are downloaded to
1249          * the controller.
1250          *
1251          * Once the firmware patching is completed successfully,
1252          * the manufacturer mode is disabled with reset and activating the
1253          * downloaded patch.
1254          *
1255          * If the firmware patching fails, the manufacturer mode is
1256          * disabled with reset and deactivating the patch.
1257          *
1258          * If the default patch file is used, no reset is done when disabling
1259          * the manufacturer.
1260          */
1261         while (fw->size > fw_ptr - fw->data) {
1262                 int ret;
1263
1264                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1265                                                  &disable_patch);
1266                 if (ret < 0)
1267                         goto exit_mfg_deactivate;
1268         }
1269
1270         release_firmware(fw);
1271
1272         if (disable_patch)
1273                 goto exit_mfg_disable;
1274
1275         /* Patching completed successfully and disable the manufacturer mode
1276          * with reset and activate the downloaded firmware patches.
1277          */
1278         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1279                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1280         if (IS_ERR(skb)) {
1281                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1282                        hdev->name, PTR_ERR(skb));
1283                 return PTR_ERR(skb);
1284         }
1285         kfree_skb(skb);
1286
1287         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1288                 hdev->name);
1289
1290         return 0;
1291
1292 exit_mfg_disable:
1293         /* Disable the manufacturer mode without reset */
1294         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1295                              HCI_INIT_TIMEOUT);
1296         if (IS_ERR(skb)) {
1297                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1298                        hdev->name, PTR_ERR(skb));
1299                 return PTR_ERR(skb);
1300         }
1301         kfree_skb(skb);
1302
1303         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1304         return 0;
1305
1306 exit_mfg_deactivate:
1307         release_firmware(fw);
1308
1309         /* Patching failed. Disable the manufacturer mode with reset and
1310          * deactivate the downloaded firmware patches.
1311          */
1312         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1313                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1314         if (IS_ERR(skb)) {
1315                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1316                        hdev->name, PTR_ERR(skb));
1317                 return PTR_ERR(skb);
1318         }
1319         kfree_skb(skb);
1320
1321         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1322                 hdev->name);
1323
1324         return 0;
1325 }
1326
1327 static int btusb_probe(struct usb_interface *intf,
1328                                 const struct usb_device_id *id)
1329 {
1330         struct usb_endpoint_descriptor *ep_desc;
1331         struct btusb_data *data;
1332         struct hci_dev *hdev;
1333         int i, err;
1334
1335         BT_DBG("intf %p id %p", intf, id);
1336
1337         /* interface numbers are hardcoded in the spec */
1338         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1339                 return -ENODEV;
1340
1341         if (!id->driver_info) {
1342                 const struct usb_device_id *match;
1343                 match = usb_match_id(intf, blacklist_table);
1344                 if (match)
1345                         id = match;
1346         }
1347
1348         if (id->driver_info == BTUSB_IGNORE)
1349                 return -ENODEV;
1350
1351         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1352                 return -ENODEV;
1353
1354         if (ignore_csr && id->driver_info & BTUSB_CSR)
1355                 return -ENODEV;
1356
1357         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1358                 return -ENODEV;
1359
1360         if (id->driver_info & BTUSB_ATH3012) {
1361                 struct usb_device *udev = interface_to_usbdev(intf);
1362
1363                 /* Old firmware would otherwise let ath3k driver load
1364                  * patch and sysconfig files */
1365                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1366                         return -ENODEV;
1367         }
1368
1369         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1370         if (!data)
1371                 return -ENOMEM;
1372
1373         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1374                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1375
1376                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1377                         data->intr_ep = ep_desc;
1378                         continue;
1379                 }
1380
1381                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1382                         data->bulk_tx_ep = ep_desc;
1383                         continue;
1384                 }
1385
1386                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1387                         data->bulk_rx_ep = ep_desc;
1388                         continue;
1389                 }
1390         }
1391
1392         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1393                 return -ENODEV;
1394
1395         data->cmdreq_type = USB_TYPE_CLASS;
1396
1397         data->udev = interface_to_usbdev(intf);
1398         data->intf = intf;
1399
1400         spin_lock_init(&data->lock);
1401
1402         INIT_WORK(&data->work, btusb_work);
1403         INIT_WORK(&data->waker, btusb_waker);
1404         spin_lock_init(&data->txlock);
1405
1406         init_usb_anchor(&data->tx_anchor);
1407         init_usb_anchor(&data->intr_anchor);
1408         init_usb_anchor(&data->bulk_anchor);
1409         init_usb_anchor(&data->isoc_anchor);
1410         init_usb_anchor(&data->deferred);
1411
1412         hdev = hci_alloc_dev();
1413         if (!hdev)
1414                 return -ENOMEM;
1415
1416         hdev->bus = HCI_USB;
1417         hci_set_drvdata(hdev, data);
1418
1419         data->hdev = hdev;
1420
1421         SET_HCIDEV_DEV(hdev, &intf->dev);
1422
1423         hdev->open   = btusb_open;
1424         hdev->close  = btusb_close;
1425         hdev->flush  = btusb_flush;
1426         hdev->send   = btusb_send_frame;
1427         hdev->notify = btusb_notify;
1428
1429         if (id->driver_info & BTUSB_BCM92035)
1430                 hdev->setup = btusb_setup_bcm92035;
1431
1432         if (id->driver_info & BTUSB_INTEL)
1433                 hdev->setup = btusb_setup_intel;
1434
1435         /* Interface numbers are hardcoded in the specification */
1436         data->isoc = usb_ifnum_to_if(data->udev, 1);
1437
1438         if (!reset)
1439                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1440
1441         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1442                 if (!disable_scofix)
1443                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1444         }
1445
1446         if (id->driver_info & BTUSB_BROKEN_ISOC)
1447                 data->isoc = NULL;
1448
1449         if (id->driver_info & BTUSB_DIGIANSWER) {
1450                 data->cmdreq_type = USB_TYPE_VENDOR;
1451                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1452         }
1453
1454         if (id->driver_info & BTUSB_CSR) {
1455                 struct usb_device *udev = data->udev;
1456
1457                 /* Old firmware would otherwise execute USB reset */
1458                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1459                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1460         }
1461
1462         if (id->driver_info & BTUSB_SNIFFER) {
1463                 struct usb_device *udev = data->udev;
1464
1465                 /* New sniffer firmware has crippled HCI interface */
1466                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1467                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1468
1469                 data->isoc = NULL;
1470         }
1471
1472         if (data->isoc) {
1473                 err = usb_driver_claim_interface(&btusb_driver,
1474                                                         data->isoc, data);
1475                 if (err < 0) {
1476                         hci_free_dev(hdev);
1477                         return err;
1478                 }
1479         }
1480
1481         err = hci_register_dev(hdev);
1482         if (err < 0) {
1483                 hci_free_dev(hdev);
1484                 return err;
1485         }
1486
1487         usb_set_intfdata(intf, data);
1488
1489         return 0;
1490 }
1491
1492 static void btusb_disconnect(struct usb_interface *intf)
1493 {
1494         struct btusb_data *data = usb_get_intfdata(intf);
1495         struct hci_dev *hdev;
1496
1497         BT_DBG("intf %p", intf);
1498
1499         if (!data)
1500                 return;
1501
1502         hdev = data->hdev;
1503         usb_set_intfdata(data->intf, NULL);
1504
1505         if (data->isoc)
1506                 usb_set_intfdata(data->isoc, NULL);
1507
1508         hci_unregister_dev(hdev);
1509
1510         if (intf == data->isoc)
1511                 usb_driver_release_interface(&btusb_driver, data->intf);
1512         else if (data->isoc)
1513                 usb_driver_release_interface(&btusb_driver, data->isoc);
1514
1515         hci_free_dev(hdev);
1516 }
1517
1518 #ifdef CONFIG_PM
1519 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1520 {
1521         struct btusb_data *data = usb_get_intfdata(intf);
1522
1523         BT_DBG("intf %p", intf);
1524
1525         if (data->suspend_count++)
1526                 return 0;
1527
1528         spin_lock_irq(&data->txlock);
1529         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1530                 set_bit(BTUSB_SUSPENDING, &data->flags);
1531                 spin_unlock_irq(&data->txlock);
1532         } else {
1533                 spin_unlock_irq(&data->txlock);
1534                 data->suspend_count--;
1535                 return -EBUSY;
1536         }
1537
1538         cancel_work_sync(&data->work);
1539
1540         btusb_stop_traffic(data);
1541         usb_kill_anchored_urbs(&data->tx_anchor);
1542
1543         return 0;
1544 }
1545
1546 static void play_deferred(struct btusb_data *data)
1547 {
1548         struct urb *urb;
1549         int err;
1550
1551         while ((urb = usb_get_from_anchor(&data->deferred))) {
1552                 err = usb_submit_urb(urb, GFP_ATOMIC);
1553                 if (err < 0)
1554                         break;
1555
1556                 data->tx_in_flight++;
1557         }
1558         usb_scuttle_anchored_urbs(&data->deferred);
1559 }
1560
1561 static int btusb_resume(struct usb_interface *intf)
1562 {
1563         struct btusb_data *data = usb_get_intfdata(intf);
1564         struct hci_dev *hdev = data->hdev;
1565         int err = 0;
1566
1567         BT_DBG("intf %p", intf);
1568
1569         if (--data->suspend_count)
1570                 return 0;
1571
1572         if (!test_bit(HCI_RUNNING, &hdev->flags))
1573                 goto done;
1574
1575         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1576                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1577                 if (err < 0) {
1578                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1579                         goto failed;
1580                 }
1581         }
1582
1583         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1584                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1585                 if (err < 0) {
1586                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1587                         goto failed;
1588                 }
1589
1590                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1591         }
1592
1593         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1594                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1595                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1596                 else
1597                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1598         }
1599
1600         spin_lock_irq(&data->txlock);
1601         play_deferred(data);
1602         clear_bit(BTUSB_SUSPENDING, &data->flags);
1603         spin_unlock_irq(&data->txlock);
1604         schedule_work(&data->work);
1605
1606         return 0;
1607
1608 failed:
1609         usb_scuttle_anchored_urbs(&data->deferred);
1610 done:
1611         spin_lock_irq(&data->txlock);
1612         clear_bit(BTUSB_SUSPENDING, &data->flags);
1613         spin_unlock_irq(&data->txlock);
1614
1615         return err;
1616 }
1617 #endif
1618
1619 static struct usb_driver btusb_driver = {
1620         .name           = "btusb",
1621         .probe          = btusb_probe,
1622         .disconnect     = btusb_disconnect,
1623 #ifdef CONFIG_PM
1624         .suspend        = btusb_suspend,
1625         .resume         = btusb_resume,
1626         .reset_resume   = btusb_resume,
1627 #endif
1628         .id_table       = btusb_table,
1629         .supports_autosuspend = 1,
1630         .disable_hub_initiated_lpm = 1,
1631 };
1632
1633 module_usb_driver(btusb_driver);
1634
1635 module_param(ignore_dga, bool, 0644);
1636 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1637
1638 module_param(ignore_csr, bool, 0644);
1639 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1640
1641 module_param(ignore_sniffer, bool, 0644);
1642 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1643
1644 module_param(disable_scofix, bool, 0644);
1645 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1646
1647 module_param(force_scofix, bool, 0644);
1648 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1649
1650 module_param(reset, bool, 0644);
1651 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1652
1653 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1654 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1655 MODULE_VERSION(VERSION);
1656 MODULE_LICENSE("GPL");