drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52
  53 static struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0b05, 0x17b5) },
 105         { USB_DEVICE(0x0b05, 0x17cb) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0489, 0xe042) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /*Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 115
 116         /* IMC Networks - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 118
 119         { }     /* Terminating entry */
 120 };
 121
 122 MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124 static struct usb_device_id blacklist_table[] = {
 125         /* CSR BlueCore devices */
 126         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 127
 128         /* Broadcom BCM2033 without firmware */
 129         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 130
 131         /* Atheros 3011 with sflash firmware */
 132         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 135         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros AR9285 Malbec with sflash firmware */
 140         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3012 with sflash firmware */
 143         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 169
 170         /* Atheros AR5BBU12 with sflash firmware */
 171         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 172
 173         /* Atheros AR5BBU12 with sflash firmware */
 174         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 176
 177         /* Broadcom BCM2035 */
 178         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 179         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 180         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 181
 182         /* Broadcom BCM2045 */
 183         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 184         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 185
 186         /* IBM/Lenovo ThinkPad with Broadcom chip */
 187         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 188         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* HP laptop with Broadcom chip */
 191         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* Dell laptop with Broadcom chip */
 194         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196         /* Dell Wireless 370 and 410 devices */
 197         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 198         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* Belkin F8T012 and F8T013 devices */
 201         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 202         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Asus WL-BTD202 device */
 205         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* Kensington Bluetooth USB adapter */
 208         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* RTX Telecom based adapters with buggy SCO support */
 211         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 212         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 213
 214         /* CONWISE Technology based adapters with buggy SCO support */
 215         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 216
 217         /* Digianswer devices */
 218         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 219         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 220
 221         /* CSR BlueCore Bluetooth Sniffer */
 222         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 223
 224         /* Frontline ComProbe Bluetooth Sniffer */
 225         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 226
 227         /* Intel Bluetooth device */
 228         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 229
 230         { }     /* Terminating entry */
 231 };
 232
 233 #define BTUSB_MAX_ISOC_FRAMES   10
 234
 235 #define BTUSB_INTR_RUNNING      0
 236 #define BTUSB_BULK_RUNNING      1
 237 #define BTUSB_ISOC_RUNNING      2
 238 #define BTUSB_SUSPENDING        3
 239 #define BTUSB_DID_ISO_RESUME    4
 240
 241 struct btusb_data {
 242         struct hci_dev       *hdev;
 243         struct usb_device    *udev;
 244         struct usb_interface *intf;
 245         struct usb_interface *isoc;
 246
 247         spinlock_t lock;
 248
 249         unsigned long flags;
 250
 251         struct work_struct work;
 252         struct work_struct waker;
 253
 254         struct usb_anchor tx_anchor;
 255         struct usb_anchor intr_anchor;
 256         struct usb_anchor bulk_anchor;
 257         struct usb_anchor isoc_anchor;
 258         struct usb_anchor deferred;
 259         int tx_in_flight;
 260         spinlock_t txlock;
 261
 262         struct usb_endpoint_descriptor *intr_ep;
 263         struct usb_endpoint_descriptor *bulk_tx_ep;
 264         struct usb_endpoint_descriptor *bulk_rx_ep;
 265         struct usb_endpoint_descriptor *isoc_tx_ep;
 266         struct usb_endpoint_descriptor *isoc_rx_ep;
 267
 268         __u8 cmdreq_type;
 269
 270         unsigned int sco_num;
 271         int isoc_altsetting;
 272         int suspend_count;
 273 };
 274
 275 static int inc_tx(struct btusb_data *data)
 276 {
 277         unsigned long flags;
 278         int rv;
 279
 280         spin_lock_irqsave(&data->txlock, flags);
 281         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 282         if (!rv)
 283                 data->tx_in_flight++;
 284         spin_unlock_irqrestore(&data->txlock, flags);
 285
 286         return rv;
 287 }
 288
 289 static void btusb_intr_complete(struct urb *urb)
 290 {
 291         struct hci_dev *hdev = urb->context;
 292         struct btusb_data *data = hci_get_drvdata(hdev);
 293         int err;
 294
 295         BT_DBG("%s urb %p status %d count %d", hdev->name,
 296                                         urb, urb->status, urb->actual_length);
 297
 298         if (!test_bit(HCI_RUNNING, &hdev->flags))
 299                 return;
 300
 301         if (urb->status == 0) {
 302                 hdev->stat.byte_rx += urb->actual_length;
 303
 304                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 305                                                 urb->transfer_buffer,
 306                                                 urb->actual_length) < 0) {
 307                         BT_ERR("%s corrupted event packet", hdev->name);
 308                         hdev->stat.err_rx++;
 309                 }
 310         } else if (urb->status == -ENOENT) {
 311                 /* Avoid suspend failed when usb_kill_urb */
 312                 return;
 313         }
 314
 315         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 316                 return;
 317
 318         usb_mark_last_busy(data->udev);
 319         usb_anchor_urb(urb, &data->intr_anchor);
 320
 321         err = usb_submit_urb(urb, GFP_ATOMIC);
 322         if (err < 0) {
 323                 /* -EPERM: urb is being killed;
 324                  * -ENODEV: device got disconnected */
 325                 if (err != -EPERM && err != -ENODEV)
 326                         BT_ERR("%s urb %p failed to resubmit (%d)",
 327                                                 hdev->name, urb, -err);
 328                 usb_unanchor_urb(urb);
 329         }
 330 }
 331
 332 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 333 {
 334         struct btusb_data *data = hci_get_drvdata(hdev);
 335         struct urb *urb;
 336         unsigned char *buf;
 337         unsigned int pipe;
 338         int err, size;
 339
 340         BT_DBG("%s", hdev->name);
 341
 342         if (!data->intr_ep)
 343                 return -ENODEV;
 344
 345         urb = usb_alloc_urb(0, mem_flags);
 346         if (!urb)
 347                 return -ENOMEM;
 348
 349         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 350
 351         buf = kmalloc(size, mem_flags);
 352         if (!buf) {
 353                 usb_free_urb(urb);
 354                 return -ENOMEM;
 355         }
 356
 357         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 358
 359         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 360                                                 btusb_intr_complete, hdev,
 361                                                 data->intr_ep->bInterval);
 362
 363         urb->transfer_flags |= URB_FREE_BUFFER;
 364
 365         usb_anchor_urb(urb, &data->intr_anchor);
 366
 367         err = usb_submit_urb(urb, mem_flags);
 368         if (err < 0) {
 369                 if (err != -EPERM && err != -ENODEV)
 370                         BT_ERR("%s urb %p submission failed (%d)",
 371                                                 hdev->name, urb, -err);
 372                 usb_unanchor_urb(urb);
 373         }
 374
 375         usb_free_urb(urb);
 376
 377         return err;
 378 }
 379
 380 static void btusb_bulk_complete(struct urb *urb)
 381 {
 382         struct hci_dev *hdev = urb->context;
 383         struct btusb_data *data = hci_get_drvdata(hdev);
 384         int err;
 385
 386         BT_DBG("%s urb %p status %d count %d", hdev->name,
 387                                         urb, urb->status, urb->actual_length);
 388
 389         if (!test_bit(HCI_RUNNING, &hdev->flags))
 390                 return;
 391
 392         if (urb->status == 0) {
 393                 hdev->stat.byte_rx += urb->actual_length;
 394
 395                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 396                                                 urb->transfer_buffer,
 397                                                 urb->actual_length) < 0) {
 398                         BT_ERR("%s corrupted ACL packet", hdev->name);
 399                         hdev->stat.err_rx++;
 400                 }
 401         } else if (urb->status == -ENOENT) {
 402                 /* Avoid suspend failed when usb_kill_urb */
 403                 return;
 404         }
 405
 406         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 407                 return;
 408
 409         usb_anchor_urb(urb, &data->bulk_anchor);
 410         usb_mark_last_busy(data->udev);
 411
 412         err = usb_submit_urb(urb, GFP_ATOMIC);
 413         if (err < 0) {
 414                 /* -EPERM: urb is being killed;
 415                  * -ENODEV: device got disconnected */
 416                 if (err != -EPERM && err != -ENODEV)
 417                         BT_ERR("%s urb %p failed to resubmit (%d)",
 418                                                 hdev->name, urb, -err);
 419                 usb_unanchor_urb(urb);
 420         }
 421 }
 422
 423 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 424 {
 425         struct btusb_data *data = hci_get_drvdata(hdev);
 426         struct urb *urb;
 427         unsigned char *buf;
 428         unsigned int pipe;
 429         int err, size = HCI_MAX_FRAME_SIZE;
 430
 431         BT_DBG("%s", hdev->name);
 432
 433         if (!data->bulk_rx_ep)
 434                 return -ENODEV;
 435
 436         urb = usb_alloc_urb(0, mem_flags);
 437         if (!urb)
 438                 return -ENOMEM;
 439
 440         buf = kmalloc(size, mem_flags);
 441         if (!buf) {
 442                 usb_free_urb(urb);
 443                 return -ENOMEM;
 444         }
 445
 446         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 447
 448         usb_fill_bulk_urb(urb, data->udev, pipe,
 449                                         buf, size, btusb_bulk_complete, hdev);
 450
 451         urb->transfer_flags |= URB_FREE_BUFFER;
 452
 453         usb_mark_last_busy(data->udev);
 454         usb_anchor_urb(urb, &data->bulk_anchor);
 455
 456         err = usb_submit_urb(urb, mem_flags);
 457         if (err < 0) {
 458                 if (err != -EPERM && err != -ENODEV)
 459                         BT_ERR("%s urb %p submission failed (%d)",
 460                                                 hdev->name, urb, -err);
 461                 usb_unanchor_urb(urb);
 462         }
 463
 464         usb_free_urb(urb);
 465
 466         return err;
 467 }
 468
 469 static void btusb_isoc_complete(struct urb *urb)
 470 {
 471         struct hci_dev *hdev = urb->context;
 472         struct btusb_data *data = hci_get_drvdata(hdev);
 473         int i, err;
 474
 475         BT_DBG("%s urb %p status %d count %d", hdev->name,
 476                                         urb, urb->status, urb->actual_length);
 477
 478         if (!test_bit(HCI_RUNNING, &hdev->flags))
 479                 return;
 480
 481         if (urb->status == 0) {
 482                 for (i = 0; i < urb->number_of_packets; i++) {
 483                         unsigned int offset = urb->iso_frame_desc[i].offset;
 484                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 485
 486                         if (urb->iso_frame_desc[i].status)
 487                                 continue;
 488
 489                         hdev->stat.byte_rx += length;
 490
 491                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 492                                                 urb->transfer_buffer + offset,
 493                                                                 length) < 0) {
 494                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 495                                 hdev->stat.err_rx++;
 496                         }
 497                 }
 498         } else if (urb->status == -ENOENT) {
 499                 /* Avoid suspend failed when usb_kill_urb */
 500                 return;
 501         }
 502
 503         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 504                 return;
 505
 506         usb_anchor_urb(urb, &data->isoc_anchor);
 507
 508         err = usb_submit_urb(urb, GFP_ATOMIC);
 509         if (err < 0) {
 510                 /* -EPERM: urb is being killed;
 511                  * -ENODEV: device got disconnected */
 512                 if (err != -EPERM && err != -ENODEV)
 513                         BT_ERR("%s urb %p failed to resubmit (%d)",
 514                                                 hdev->name, urb, -err);
 515                 usb_unanchor_urb(urb);
 516         }
 517 }
 518
 519 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 520 {
 521         int i, offset = 0;
 522
 523         BT_DBG("len %d mtu %d", len, mtu);
 524
 525         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 526                                         i++, offset += mtu, len -= mtu) {
 527                 urb->iso_frame_desc[i].offset = offset;
 528                 urb->iso_frame_desc[i].length = mtu;
 529         }
 530
 531         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 532                 urb->iso_frame_desc[i].offset = offset;
 533                 urb->iso_frame_desc[i].length = len;
 534                 i++;
 535         }
 536
 537         urb->number_of_packets = i;
 538 }
 539
 540 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 541 {
 542         struct btusb_data *data = hci_get_drvdata(hdev);
 543         struct urb *urb;
 544         unsigned char *buf;
 545         unsigned int pipe;
 546         int err, size;
 547
 548         BT_DBG("%s", hdev->name);
 549
 550         if (!data->isoc_rx_ep)
 551                 return -ENODEV;
 552
 553         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 554         if (!urb)
 555                 return -ENOMEM;
 556
 557         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 558                                                 BTUSB_MAX_ISOC_FRAMES;
 559
 560         buf = kmalloc(size, mem_flags);
 561         if (!buf) {
 562                 usb_free_urb(urb);
 563                 return -ENOMEM;
 564         }
 565
 566         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 567
 568         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 569                                 hdev, data->isoc_rx_ep->bInterval);
 570
 571         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 572
 573         __fill_isoc_descriptor(urb, size,
 574                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 575
 576         usb_anchor_urb(urb, &data->isoc_anchor);
 577
 578         err = usb_submit_urb(urb, mem_flags);
 579         if (err < 0) {
 580                 if (err != -EPERM && err != -ENODEV)
 581                         BT_ERR("%s urb %p submission failed (%d)",
 582                                                 hdev->name, urb, -err);
 583                 usb_unanchor_urb(urb);
 584         }
 585
 586         usb_free_urb(urb);
 587
 588         return err;
 589 }
 590
 591 static void btusb_tx_complete(struct urb *urb)
 592 {
 593         struct sk_buff *skb = urb->context;
 594         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 595         struct btusb_data *data = hci_get_drvdata(hdev);
 596
 597         BT_DBG("%s urb %p status %d count %d", hdev->name,
 598                                         urb, urb->status, urb->actual_length);
 599
 600         if (!test_bit(HCI_RUNNING, &hdev->flags))
 601                 goto done;
 602
 603         if (!urb->status)
 604                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 605         else
 606                 hdev->stat.err_tx++;
 607
 608 done:
 609         spin_lock(&data->txlock);
 610         data->tx_in_flight--;
 611         spin_unlock(&data->txlock);
 612
 613         kfree(urb->setup_packet);
 614
 615         kfree_skb(skb);
 616 }
 617
 618 static void btusb_isoc_tx_complete(struct urb *urb)
 619 {
 620         struct sk_buff *skb = urb->context;
 621         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 622
 623         BT_DBG("%s urb %p status %d count %d", hdev->name,
 624                                         urb, urb->status, urb->actual_length);
 625
 626         if (!test_bit(HCI_RUNNING, &hdev->flags))
 627                 goto done;
 628
 629         if (!urb->status)
 630                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 631         else
 632                 hdev->stat.err_tx++;
 633
 634 done:
 635         kfree(urb->setup_packet);
 636
 637         kfree_skb(skb);
 638 }
 639
 640 static int btusb_open(struct hci_dev *hdev)
 641 {
 642         struct btusb_data *data = hci_get_drvdata(hdev);
 643         int err;
 644
 645         BT_DBG("%s", hdev->name);
 646
 647         err = usb_autopm_get_interface(data->intf);
 648         if (err < 0)
 649                 return err;
 650
 651         data->intf->needs_remote_wakeup = 1;
 652
 653         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 654                 goto done;
 655
 656         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 657                 goto done;
 658
 659         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 660         if (err < 0)
 661                 goto failed;
 662
 663         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 664         if (err < 0) {
 665                 usb_kill_anchored_urbs(&data->intr_anchor);
 666                 goto failed;
 667         }
 668
 669         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 670         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 671
 672 done:
 673         usb_autopm_put_interface(data->intf);
 674         return 0;
 675
 676 failed:
 677         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 678         clear_bit(HCI_RUNNING, &hdev->flags);
 679         usb_autopm_put_interface(data->intf);
 680         return err;
 681 }
 682
 683 static void btusb_stop_traffic(struct btusb_data *data)
 684 {
 685         usb_kill_anchored_urbs(&data->intr_anchor);
 686         usb_kill_anchored_urbs(&data->bulk_anchor);
 687         usb_kill_anchored_urbs(&data->isoc_anchor);
 688 }
 689
 690 static int btusb_close(struct hci_dev *hdev)
 691 {
 692         struct btusb_data *data = hci_get_drvdata(hdev);
 693         int err;
 694
 695         BT_DBG("%s", hdev->name);
 696
 697         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 698                 return 0;
 699
 700         cancel_work_sync(&data->work);
 701         cancel_work_sync(&data->waker);
 702
 703         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 704         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 705         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 706
 707         btusb_stop_traffic(data);
 708         err = usb_autopm_get_interface(data->intf);
 709         if (err < 0)
 710                 goto failed;
 711
 712         data->intf->needs_remote_wakeup = 0;
 713         usb_autopm_put_interface(data->intf);
 714
 715 failed:
 716         usb_scuttle_anchored_urbs(&data->deferred);
 717         return 0;
 718 }
 719
 720 static int btusb_flush(struct hci_dev *hdev)
 721 {
 722         struct btusb_data *data = hci_get_drvdata(hdev);
 723
 724         BT_DBG("%s", hdev->name);
 725
 726         usb_kill_anchored_urbs(&data->tx_anchor);
 727
 728         return 0;
 729 }
 730
 731 static int btusb_send_frame(struct sk_buff *skb)
 732 {
 733         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 734         struct btusb_data *data = hci_get_drvdata(hdev);
 735         struct usb_ctrlrequest *dr;
 736         struct urb *urb;
 737         unsigned int pipe;
 738         int err;
 739
 740         BT_DBG("%s", hdev->name);
 741
 742         if (!test_bit(HCI_RUNNING, &hdev->flags))
 743                 return -EBUSY;
 744
 745         switch (bt_cb(skb)->pkt_type) {
 746         case HCI_COMMAND_PKT:
 747                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 748                 if (!urb)
 749                         return -ENOMEM;
 750
 751                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 752                 if (!dr) {
 753                         usb_free_urb(urb);
 754                         return -ENOMEM;
 755                 }
 756
 757                 dr->bRequestType = data->cmdreq_type;
 758                 dr->bRequest     = 0;
 759                 dr->wIndex       = 0;
 760                 dr->wValue       = 0;
 761                 dr->wLength      = __cpu_to_le16(skb->len);
 762
 763                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 764
 765                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 766                                 skb->data, skb->len, btusb_tx_complete, skb);
 767
 768                 hdev->stat.cmd_tx++;
 769                 break;
 770
 771         case HCI_ACLDATA_PKT:
 772                 if (!data->bulk_tx_ep)
 773                         return -ENODEV;
 774
 775                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 776                 if (!urb)
 777                         return -ENOMEM;
 778
 779                 pipe = usb_sndbulkpipe(data->udev,
 780                                         data->bulk_tx_ep->bEndpointAddress);
 781
 782                 usb_fill_bulk_urb(urb, data->udev, pipe,
 783                                 skb->data, skb->len, btusb_tx_complete, skb);
 784
 785                 hdev->stat.acl_tx++;
 786                 break;
 787
 788         case HCI_SCODATA_PKT:
 789                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 790                         return -ENODEV;
 791
 792                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 793                 if (!urb)
 794                         return -ENOMEM;
 795
 796                 pipe = usb_sndisocpipe(data->udev,
 797                                         data->isoc_tx_ep->bEndpointAddress);
 798
 799                 usb_fill_int_urb(urb, data->udev, pipe,
 800                                 skb->data, skb->len, btusb_isoc_tx_complete,
 801                                 skb, data->isoc_tx_ep->bInterval);
 802
 803                 urb->transfer_flags  = URB_ISO_ASAP;
 804
 805                 __fill_isoc_descriptor(urb, skb->len,
 806                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 807
 808                 hdev->stat.sco_tx++;
 809                 goto skip_waking;
 810
 811         default:
 812                 return -EILSEQ;
 813         }
 814
 815         err = inc_tx(data);
 816         if (err) {
 817                 usb_anchor_urb(urb, &data->deferred);
 818                 schedule_work(&data->waker);
 819                 err = 0;
 820                 goto done;
 821         }
 822
 823 skip_waking:
 824         usb_anchor_urb(urb, &data->tx_anchor);
 825
 826         err = usb_submit_urb(urb, GFP_ATOMIC);
 827         if (err < 0) {
 828                 if (err != -EPERM && err != -ENODEV)
 829                         BT_ERR("%s urb %p submission failed (%d)",
 830                                                 hdev->name, urb, -err);
 831                 kfree(urb->setup_packet);
 832                 usb_unanchor_urb(urb);
 833         } else {
 834                 usb_mark_last_busy(data->udev);
 835         }
 836
 837 done:
 838         usb_free_urb(urb);
 839         return err;
 840 }
 841
 842 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 843 {
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845
 846         BT_DBG("%s evt %d", hdev->name, evt);
 847
 848         if (hdev->conn_hash.sco_num != data->sco_num) {
 849                 data->sco_num = hdev->conn_hash.sco_num;
 850                 schedule_work(&data->work);
 851         }
 852 }
 853
 854 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 855 {
 856         struct btusb_data *data = hci_get_drvdata(hdev);
 857         struct usb_interface *intf = data->isoc;
 858         struct usb_endpoint_descriptor *ep_desc;
 859         int i, err;
 860
 861         if (!data->isoc)
 862                 return -ENODEV;
 863
 864         err = usb_set_interface(data->udev, 1, altsetting);
 865         if (err < 0) {
 866                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 867                 return err;
 868         }
 869
 870         data->isoc_altsetting = altsetting;
 871
 872         data->isoc_tx_ep = NULL;
 873         data->isoc_rx_ep = NULL;
 874
 875         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 876                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 877
 878                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 879                         data->isoc_tx_ep = ep_desc;
 880                         continue;
 881                 }
 882
 883                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 884                         data->isoc_rx_ep = ep_desc;
 885                         continue;
 886                 }
 887         }
 888
 889         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 890                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 891                 return -ENODEV;
 892         }
 893
 894         return 0;
 895 }
 896
 897 static void btusb_work(struct work_struct *work)
 898 {
 899         struct btusb_data *data = container_of(work, struct btusb_data, work);
 900         struct hci_dev *hdev = data->hdev;
 901         int new_alts;
 902         int err;
 903
 904         if (hdev->conn_hash.sco_num > 0) {
 905                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 906                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 907                         if (err < 0) {
 908                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 909                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 910                                 return;
 911                         }
 912
 913                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 914                 }
 915
 916                 if (hdev->voice_setting & 0x0020) {
 917                         static const int alts[3] = { 2, 4, 5 };
 918                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 919                 } else {
 920                         new_alts = hdev->conn_hash.sco_num;
 921                 }
 922
 923                 if (data->isoc_altsetting != new_alts) {
 924                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 925                         usb_kill_anchored_urbs(&data->isoc_anchor);
 926
 927                         if (__set_isoc_interface(hdev, new_alts) < 0)
 928                                 return;
 929                 }
 930
 931                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 932                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 933                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 934                         else
 935                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 936                 }
 937         } else {
 938                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939                 usb_kill_anchored_urbs(&data->isoc_anchor);
 940
 941                 __set_isoc_interface(hdev, 0);
 942                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 943                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 944         }
 945 }
 946
 947 static void btusb_waker(struct work_struct *work)
 948 {
 949         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 950         int err;
 951
 952         err = usb_autopm_get_interface(data->intf);
 953         if (err < 0)
 954                 return;
 955
 956         usb_autopm_put_interface(data->intf);
 957 }
 958
 959 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 960 {
 961         struct sk_buff *skb;
 962         u8 val = 0x00;
 963
 964         BT_DBG("%s", hdev->name);
 965
 966         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 967         if (IS_ERR(skb))
 968                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 969         else
 970                 kfree_skb(skb);
 971
 972         return 0;
 973 }
 974
 975 struct intel_version {
 976         u8 status;
 977         u8 hw_platform;
 978         u8 hw_variant;
 979         u8 hw_revision;
 980         u8 fw_variant;
 981         u8 fw_revision;
 982         u8 fw_build_num;
 983         u8 fw_build_ww;
 984         u8 fw_build_yy;
 985         u8 fw_patch_num;
 986 } __packed;
 987
 988 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 989                                                 struct intel_version *ver)
 990 {
 991         const struct firmware *fw;
 992         char fwname[64];
 993         int ret;
 994
 995         snprintf(fwname, sizeof(fwname),
 996                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 997                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 998                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 999                  ver->fw_build_ww, ver->fw_build_yy);
1000
1001         ret = request_firmware(&fw, fwname, &hdev->dev);
1002         if (ret < 0) {
1003                 if (ret == -EINVAL) {
1004                         BT_ERR("%s Intel firmware file request failed (%d)",
1005                                hdev->name, ret);
1006                         return NULL;
1007                 }
1008
1009                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1010                        hdev->name, fwname, ret);
1011
1012                 /* If the correct firmware patch file is not found, use the
1013                  * default firmware patch file instead
1014                  */
1015                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1016                          ver->hw_platform, ver->hw_variant);
1017                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1018                         BT_ERR("%s failed to open default Intel fw file: %s",
1019                                hdev->name, fwname);
1020                         return NULL;
1021                 }
1022         }
1023
1024         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1025
1026         return fw;
1027 }
1028
1029 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1030                                       const struct firmware *fw,
1031                                       const u8 **fw_ptr, int *disable_patch)
1032 {
1033         struct sk_buff *skb;
1034         struct hci_command_hdr *cmd;
1035         const u8 *cmd_param;
1036         struct hci_event_hdr *evt = NULL;
1037         const u8 *evt_param = NULL;
1038         int remain = fw->size - (*fw_ptr - fw->data);
1039
1040         /* The first byte indicates the types of the patch command or event.
1041          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1042          * in the current firmware buffer doesn't start with 0x01 or
1043          * the size of remain buffer is smaller than HCI command header,
1044          * the firmware file is corrupted and it should stop the patching
1045          * process.
1046          */
1047         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1048                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1049                 return -EINVAL;
1050         }
1051         (*fw_ptr)++;
1052         remain--;
1053
1054         cmd = (struct hci_command_hdr *)(*fw_ptr);
1055         *fw_ptr += sizeof(*cmd);
1056         remain -= sizeof(*cmd);
1057
1058         /* Ensure that the remain firmware data is long enough than the length
1059          * of command parameter. If not, the firmware file is corrupted.
1060          */
1061         if (remain < cmd->plen) {
1062                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1063                 return -EFAULT;
1064         }
1065
1066         /* If there is a command that loads a patch in the firmware
1067          * file, then enable the patch upon success, otherwise just
1068          * disable the manufacturer mode, for example patch activation
1069          * is not required when the default firmware patch file is used
1070          * because there are no patch data to load.
1071          */
1072         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1073                 *disable_patch = 0;
1074
1075         cmd_param = *fw_ptr;
1076         *fw_ptr += cmd->plen;
1077         remain -= cmd->plen;
1078
1079         /* This reads the expected events when the above command is sent to the
1080          * device. Some vendor commands expects more than one events, for
1081          * example command status event followed by vendor specific event.
1082          * For this case, it only keeps the last expected event. so the command
1083          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1084          * last expected event.
1085          */
1086         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1087                 (*fw_ptr)++;
1088                 remain--;
1089
1090                 evt = (struct hci_event_hdr *)(*fw_ptr);
1091                 *fw_ptr += sizeof(*evt);
1092                 remain -= sizeof(*evt);
1093
1094                 if (remain < evt->plen) {
1095                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1096                                hdev->name);
1097                         return -EFAULT;
1098                 }
1099
1100                 evt_param = *fw_ptr;
1101                 *fw_ptr += evt->plen;
1102                 remain -= evt->plen;
1103         }
1104
1105         /* Every HCI commands in the firmware file has its correspond event.
1106          * If event is not found or remain is smaller than zero, the firmware
1107          * file is corrupted.
1108          */
1109         if (!evt || !evt_param || remain < 0) {
1110                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1111                 return -EFAULT;
1112         }
1113
1114         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1115                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1116         if (IS_ERR(skb)) {
1117                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1118                        hdev->name, cmd->opcode, PTR_ERR(skb));
1119                 return PTR_ERR(skb);
1120         }
1121
1122         /* It ensures that the returned event matches the event data read from
1123          * the firmware file. At fist, it checks the length and then
1124          * the contents of the event.
1125          */
1126         if (skb->len != evt->plen) {
1127                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1128                        le16_to_cpu(cmd->opcode));
1129                 kfree_skb(skb);
1130                 return -EFAULT;
1131         }
1132
1133         if (memcmp(skb->data, evt_param, evt->plen)) {
1134                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1135                        hdev->name, le16_to_cpu(cmd->opcode));
1136                 kfree_skb(skb);
1137                 return -EFAULT;
1138         }
1139         kfree_skb(skb);
1140
1141         return 0;
1142 }
1143
1144 static int btusb_setup_intel(struct hci_dev *hdev)
1145 {
1146         struct sk_buff *skb;
1147         const struct firmware *fw;
1148         const u8 *fw_ptr;
1149         int disable_patch;
1150         struct intel_version *ver;
1151
1152         const u8 mfg_enable[] = { 0x01, 0x00 };
1153         const u8 mfg_disable[] = { 0x00, 0x00 };
1154         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1155         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1156
1157         BT_DBG("%s", hdev->name);
1158
1159         /* The controller has a bug with the first HCI command sent to it
1160          * returning number of completed commands as zero. This would stall the
1161          * command processing in the Bluetooth core.
1162          *
1163          * As a workaround, send HCI Reset command first which will reset the
1164          * number of completed commands and allow normal command processing
1165          * from now on.
1166          */
1167         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1168         if (IS_ERR(skb)) {
1169                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1170                        hdev->name, PTR_ERR(skb));
1171                 return PTR_ERR(skb);
1172         }
1173         kfree_skb(skb);
1174
1175         /* Read Intel specific controller version first to allow selection of
1176          * which firmware file to load.
1177          *
1178          * The returned information are hardware variant and revision plus
1179          * firmware variant, revision and build number.
1180          */
1181         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1182         if (IS_ERR(skb)) {
1183                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1184                        hdev->name, PTR_ERR(skb));
1185                 return PTR_ERR(skb);
1186         }
1187
1188         if (skb->len != sizeof(*ver)) {
1189                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1190                 kfree_skb(skb);
1191                 return -EIO;
1192         }
1193
1194         ver = (struct intel_version *)skb->data;
1195         if (ver->status) {
1196                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1197                        ver->status);
1198                 kfree_skb(skb);
1199                 return -bt_to_errno(ver->status);
1200         }
1201
1202         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1203                 hdev->name, ver->hw_platform, ver->hw_variant,
1204                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1205                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1206                 ver->fw_patch_num);
1207
1208         /* fw_patch_num indicates the version of patch the device currently
1209          * have. If there is no patch data in the device, it is always 0x00.
1210          * So, if it is other than 0x00, no need to patch the deivce again.
1211          */
1212         if (ver->fw_patch_num) {
1213                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1214                         hdev->name, ver->fw_patch_num);
1215                 kfree_skb(skb);
1216                 return 0;
1217         }
1218
1219         /* Opens the firmware patch file based on the firmware version read
1220          * from the controller. If it fails to open the matching firmware
1221          * patch file, it tries to open the default firmware patch file.
1222          * If no patch file is found, allow the device to operate without
1223          * a patch.
1224          */
1225         fw = btusb_setup_intel_get_fw(hdev, ver);
1226         if (!fw) {
1227                 kfree_skb(skb);
1228                 return 0;
1229         }
1230         fw_ptr = fw->data;
1231
1232         /* This Intel specific command enables the manufacturer mode of the
1233          * controller.
1234          *
1235          * Only while this mode is enabled, the driver can download the
1236          * firmware patch data and configuration parameters.
1237          */
1238         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1239         if (IS_ERR(skb)) {
1240                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1241                        hdev->name, PTR_ERR(skb));
1242                 release_firmware(fw);
1243                 return PTR_ERR(skb);
1244         }
1245
1246         if (skb->data[0]) {
1247                 u8 evt_status = skb->data[0];
1248                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1249                        hdev->name, evt_status);
1250                 kfree_skb(skb);
1251                 release_firmware(fw);
1252                 return -bt_to_errno(evt_status);
1253         }
1254         kfree_skb(skb);
1255
1256         disable_patch = 1;
1257
1258         /* The firmware data file consists of list of Intel specific HCI
1259          * commands and its expected events. The first byte indicates the
1260          * type of the message, either HCI command or HCI event.
1261          *
1262          * It reads the command and its expected event from the firmware file,
1263          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1264          * the returned event is compared with the event read from the firmware
1265          * file and it will continue until all the messages are downloaded to
1266          * the controller.
1267          *
1268          * Once the firmware patching is completed successfully,
1269          * the manufacturer mode is disabled with reset and activating the
1270          * downloaded patch.
1271          *
1272          * If the firmware patching fails, the manufacturer mode is
1273          * disabled with reset and deactivating the patch.
1274          *
1275          * If the default patch file is used, no reset is done when disabling
1276          * the manufacturer.
1277          */
1278         while (fw->size > fw_ptr - fw->data) {
1279                 int ret;
1280
1281                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1282                                                  &disable_patch);
1283                 if (ret < 0)
1284                         goto exit_mfg_deactivate;
1285         }
1286
1287         release_firmware(fw);
1288
1289         if (disable_patch)
1290                 goto exit_mfg_disable;
1291
1292         /* Patching completed successfully and disable the manufacturer mode
1293          * with reset and activate the downloaded firmware patches.
1294          */
1295         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1296                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1297         if (IS_ERR(skb)) {
1298                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1299                        hdev->name, PTR_ERR(skb));
1300                 return PTR_ERR(skb);
1301         }
1302         kfree_skb(skb);
1303
1304         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1305                 hdev->name);
1306
1307         return 0;
1308
1309 exit_mfg_disable:
1310         /* Disable the manufacturer mode without reset */
1311         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1312                              HCI_INIT_TIMEOUT);
1313         if (IS_ERR(skb)) {
1314                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1315                        hdev->name, PTR_ERR(skb));
1316                 return PTR_ERR(skb);
1317         }
1318         kfree_skb(skb);
1319
1320         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1321         return 0;
1322
1323 exit_mfg_deactivate:
1324         release_firmware(fw);
1325
1326         /* Patching failed. Disable the manufacturer mode with reset and
1327          * deactivate the downloaded firmware patches.
1328          */
1329         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1330                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1331         if (IS_ERR(skb)) {
1332                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1333                        hdev->name, PTR_ERR(skb));
1334                 return PTR_ERR(skb);
1335         }
1336         kfree_skb(skb);
1337
1338         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1339                 hdev->name);
1340
1341         return 0;
1342 }
1343
1344 static int btusb_probe(struct usb_interface *intf,
1345                                 const struct usb_device_id *id)
1346 {
1347         struct usb_endpoint_descriptor *ep_desc;
1348         struct btusb_data *data;
1349         struct hci_dev *hdev;
1350         int i, err;
1351
1352         BT_DBG("intf %p id %p", intf, id);
1353
1354         /* interface numbers are hardcoded in the spec */
1355         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1356                 return -ENODEV;
1357
1358         if (!id->driver_info) {
1359                 const struct usb_device_id *match;
1360                 match = usb_match_id(intf, blacklist_table);
1361                 if (match)
1362                         id = match;
1363         }
1364
1365         if (id->driver_info == BTUSB_IGNORE)
1366                 return -ENODEV;
1367
1368         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1369                 return -ENODEV;
1370
1371         if (ignore_csr && id->driver_info & BTUSB_CSR)
1372                 return -ENODEV;
1373
1374         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1375                 return -ENODEV;
1376
1377         if (id->driver_info & BTUSB_ATH3012) {
1378                 struct usb_device *udev = interface_to_usbdev(intf);
1379
1380                 /* Old firmware would otherwise let ath3k driver load
1381                  * patch and sysconfig files */
1382                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1383                         return -ENODEV;
1384         }
1385
1386         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1387         if (!data)
1388                 return -ENOMEM;
1389
1390         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1391                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1392
1393                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1394                         data->intr_ep = ep_desc;
1395                         continue;
1396                 }
1397
1398                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1399                         data->bulk_tx_ep = ep_desc;
1400                         continue;
1401                 }
1402
1403                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1404                         data->bulk_rx_ep = ep_desc;
1405                         continue;
1406                 }
1407         }
1408
1409         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1410                 return -ENODEV;
1411
1412         data->cmdreq_type = USB_TYPE_CLASS;
1413
1414         data->udev = interface_to_usbdev(intf);
1415         data->intf = intf;
1416
1417         spin_lock_init(&data->lock);
1418
1419         INIT_WORK(&data->work, btusb_work);
1420         INIT_WORK(&data->waker, btusb_waker);
1421         spin_lock_init(&data->txlock);
1422
1423         init_usb_anchor(&data->tx_anchor);
1424         init_usb_anchor(&data->intr_anchor);
1425         init_usb_anchor(&data->bulk_anchor);
1426         init_usb_anchor(&data->isoc_anchor);
1427         init_usb_anchor(&data->deferred);
1428
1429         hdev = hci_alloc_dev();
1430         if (!hdev)
1431                 return -ENOMEM;
1432
1433         hdev->bus = HCI_USB;
1434         hci_set_drvdata(hdev, data);
1435
1436         data->hdev = hdev;
1437
1438         SET_HCIDEV_DEV(hdev, &intf->dev);
1439
1440         hdev->open   = btusb_open;
1441         hdev->close  = btusb_close;
1442         hdev->flush  = btusb_flush;
1443         hdev->send   = btusb_send_frame;
1444         hdev->notify = btusb_notify;
1445
1446         if (id->driver_info & BTUSB_BCM92035)
1447                 hdev->setup = btusb_setup_bcm92035;
1448
1449         if (id->driver_info & BTUSB_INTEL)
1450                 hdev->setup = btusb_setup_intel;
1451
1452         /* Interface numbers are hardcoded in the specification */
1453         data->isoc = usb_ifnum_to_if(data->udev, 1);
1454
1455         if (!reset)
1456                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1457
1458         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1459                 if (!disable_scofix)
1460                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1461         }
1462
1463         if (id->driver_info & BTUSB_BROKEN_ISOC)
1464                 data->isoc = NULL;
1465
1466         if (id->driver_info & BTUSB_DIGIANSWER) {
1467                 data->cmdreq_type = USB_TYPE_VENDOR;
1468                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1469         }
1470
1471         if (id->driver_info & BTUSB_CSR) {
1472                 struct usb_device *udev = data->udev;
1473
1474                 /* Old firmware would otherwise execute USB reset */
1475                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1476                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1477         }
1478
1479         if (id->driver_info & BTUSB_SNIFFER) {
1480                 struct usb_device *udev = data->udev;
1481
1482                 /* New sniffer firmware has crippled HCI interface */
1483                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1484                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1485
1486                 data->isoc = NULL;
1487         }
1488
1489         if (data->isoc) {
1490                 err = usb_driver_claim_interface(&btusb_driver,
1491                                                         data->isoc, data);
1492                 if (err < 0) {
1493                         hci_free_dev(hdev);
1494                         return err;
1495                 }
1496         }
1497
1498         err = hci_register_dev(hdev);
1499         if (err < 0) {
1500                 hci_free_dev(hdev);
1501                 return err;
1502         }
1503
1504         usb_set_intfdata(intf, data);
1505
1506         return 0;
1507 }
1508
1509 static void btusb_disconnect(struct usb_interface *intf)
1510 {
1511         struct btusb_data *data = usb_get_intfdata(intf);
1512         struct hci_dev *hdev;
1513
1514         BT_DBG("intf %p", intf);
1515
1516         if (!data)
1517                 return;
1518
1519         hdev = data->hdev;
1520         usb_set_intfdata(data->intf, NULL);
1521
1522         if (data->isoc)
1523                 usb_set_intfdata(data->isoc, NULL);
1524
1525         hci_unregister_dev(hdev);
1526
1527         if (intf == data->isoc)
1528                 usb_driver_release_interface(&btusb_driver, data->intf);
1529         else if (data->isoc)
1530                 usb_driver_release_interface(&btusb_driver, data->isoc);
1531
1532         hci_free_dev(hdev);
1533 }
1534
1535 #ifdef CONFIG_PM
1536 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1537 {
1538         struct btusb_data *data = usb_get_intfdata(intf);
1539
1540         BT_DBG("intf %p", intf);
1541
1542         if (data->suspend_count++)
1543                 return 0;
1544
1545         spin_lock_irq(&data->txlock);
1546         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1547                 set_bit(BTUSB_SUSPENDING, &data->flags);
1548                 spin_unlock_irq(&data->txlock);
1549         } else {
1550                 spin_unlock_irq(&data->txlock);
1551                 data->suspend_count--;
1552                 return -EBUSY;
1553         }
1554
1555         cancel_work_sync(&data->work);
1556
1557         btusb_stop_traffic(data);
1558         usb_kill_anchored_urbs(&data->tx_anchor);
1559
1560         return 0;
1561 }
1562
1563 static void play_deferred(struct btusb_data *data)
1564 {
1565         struct urb *urb;
1566         int err;
1567
1568         while ((urb = usb_get_from_anchor(&data->deferred))) {
1569                 err = usb_submit_urb(urb, GFP_ATOMIC);
1570                 if (err < 0)
1571                         break;
1572
1573                 data->tx_in_flight++;
1574         }
1575         usb_scuttle_anchored_urbs(&data->deferred);
1576 }
1577
1578 static int btusb_resume(struct usb_interface *intf)
1579 {
1580         struct btusb_data *data = usb_get_intfdata(intf);
1581         struct hci_dev *hdev = data->hdev;
1582         int err = 0;
1583
1584         BT_DBG("intf %p", intf);
1585
1586         if (--data->suspend_count)
1587                 return 0;
1588
1589         if (!test_bit(HCI_RUNNING, &hdev->flags))
1590                 goto done;
1591
1592         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1593                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1594                 if (err < 0) {
1595                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1596                         goto failed;
1597                 }
1598         }
1599
1600         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1601                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1602                 if (err < 0) {
1603                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1604                         goto failed;
1605                 }
1606
1607                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1608         }
1609
1610         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1611                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1612                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1613                 else
1614                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1615         }
1616
1617         spin_lock_irq(&data->txlock);
1618         play_deferred(data);
1619         clear_bit(BTUSB_SUSPENDING, &data->flags);
1620         spin_unlock_irq(&data->txlock);
1621         schedule_work(&data->work);
1622
1623         return 0;
1624
1625 failed:
1626         usb_scuttle_anchored_urbs(&data->deferred);
1627 done:
1628         spin_lock_irq(&data->txlock);
1629         clear_bit(BTUSB_SUSPENDING, &data->flags);
1630         spin_unlock_irq(&data->txlock);
1631
1632         return err;
1633 }
1634 #endif
1635
1636 static struct usb_driver btusb_driver = {
1637         .name           = "btusb",
1638         .probe          = btusb_probe,
1639         .disconnect     = btusb_disconnect,
1640 #ifdef CONFIG_PM
1641         .suspend        = btusb_suspend,
1642         .resume         = btusb_resume,
1643 #endif
1644         .id_table       = btusb_table,
1645         .supports_autosuspend = 1,
1646         .disable_hub_initiated_lpm = 1,
1647 };
1648
1649 module_usb_driver(btusb_driver);
1650
1651 module_param(ignore_dga, bool, 0644);
1652 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1653
1654 module_param(ignore_csr, bool, 0644);
1655 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1656
1657 module_param(ignore_sniffer, bool, 0644);
1658 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1659
1660 module_param(disable_scofix, bool, 0644);
1661 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1662
1663 module_param(force_scofix, bool, 0644);
1664 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1665
1666 module_param(reset, bool, 0644);
1667 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1668
1669 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1670 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1671 MODULE_VERSION(VERSION);
1672 MODULE_LICENSE("GPL");