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 const 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         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         { }     /* Terminating entry */
 120 };
 121
 122 MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124 static const 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, 0x817a), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x0220), .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         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 170
 171         /* Atheros AR5BBU12 with sflash firmware */
 172         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 173
 174         /* Atheros AR5BBU12 with sflash firmware */
 175         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 177
 178         /* Broadcom BCM2035 */
 179         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 180         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 181         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 182
 183         /* Broadcom BCM2045 */
 184         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187         /* IBM/Lenovo ThinkPad with Broadcom chip */
 188         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* HP laptop with Broadcom chip */
 192         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Dell laptop with Broadcom chip */
 195         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* Dell Wireless 370 and 410 devices */
 198         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 199         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Belkin F8T012 and F8T013 devices */
 202         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 203         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Asus WL-BTD202 device */
 206         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Kensington Bluetooth USB adapter */
 209         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* RTX Telecom based adapters with buggy SCO support */
 212         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 213         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 214
 215         /* CONWISE Technology based adapters with buggy SCO support */
 216         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 217
 218         /* Digianswer devices */
 219         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 220         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 221
 222         /* CSR BlueCore Bluetooth Sniffer */
 223         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 224
 225         /* Frontline ComProbe Bluetooth Sniffer */
 226         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 227
 228         /* Intel Bluetooth device */
 229         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 230         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 231
 232         { }     /* Terminating entry */
 233 };
 234
 235 #define BTUSB_MAX_ISOC_FRAMES   10
 236
 237 #define BTUSB_INTR_RUNNING      0
 238 #define BTUSB_BULK_RUNNING      1
 239 #define BTUSB_ISOC_RUNNING      2
 240 #define BTUSB_SUSPENDING        3
 241 #define BTUSB_DID_ISO_RESUME    4
 242
 243 struct btusb_data {
 244         struct hci_dev       *hdev;
 245         struct usb_device    *udev;
 246         struct usb_interface *intf;
 247         struct usb_interface *isoc;
 248
 249         spinlock_t lock;
 250
 251         unsigned long flags;
 252
 253         struct work_struct work;
 254         struct work_struct waker;
 255
 256         struct usb_anchor tx_anchor;
 257         struct usb_anchor intr_anchor;
 258         struct usb_anchor bulk_anchor;
 259         struct usb_anchor isoc_anchor;
 260         struct usb_anchor deferred;
 261         int tx_in_flight;
 262         spinlock_t txlock;
 263
 264         struct usb_endpoint_descriptor *intr_ep;
 265         struct usb_endpoint_descriptor *bulk_tx_ep;
 266         struct usb_endpoint_descriptor *bulk_rx_ep;
 267         struct usb_endpoint_descriptor *isoc_tx_ep;
 268         struct usb_endpoint_descriptor *isoc_rx_ep;
 269
 270         __u8 cmdreq_type;
 271
 272         unsigned int sco_num;
 273         int isoc_altsetting;
 274         int suspend_count;
 275 };
 276
 277 static int inc_tx(struct btusb_data *data)
 278 {
 279         unsigned long flags;
 280         int rv;
 281
 282         spin_lock_irqsave(&data->txlock, flags);
 283         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 284         if (!rv)
 285                 data->tx_in_flight++;
 286         spin_unlock_irqrestore(&data->txlock, flags);
 287
 288         return rv;
 289 }
 290
 291 static void btusb_intr_complete(struct urb *urb)
 292 {
 293         struct hci_dev *hdev = urb->context;
 294         struct btusb_data *data = hci_get_drvdata(hdev);
 295         int err;
 296
 297         BT_DBG("%s urb %p status %d count %d", hdev->name,
 298                                         urb, urb->status, urb->actual_length);
 299
 300         if (!test_bit(HCI_RUNNING, &hdev->flags))
 301                 return;
 302
 303         if (urb->status == 0) {
 304                 hdev->stat.byte_rx += urb->actual_length;
 305
 306                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 307                                                 urb->transfer_buffer,
 308                                                 urb->actual_length) < 0) {
 309                         BT_ERR("%s corrupted event packet", hdev->name);
 310                         hdev->stat.err_rx++;
 311                 }
 312         } else if (urb->status == -ENOENT) {
 313                 /* Avoid suspend failed when usb_kill_urb */
 314                 return;
 315         }
 316
 317         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 318                 return;
 319
 320         usb_mark_last_busy(data->udev);
 321         usb_anchor_urb(urb, &data->intr_anchor);
 322
 323         err = usb_submit_urb(urb, GFP_ATOMIC);
 324         if (err < 0) {
 325                 /* -EPERM: urb is being killed;
 326                  * -ENODEV: device got disconnected */
 327                 if (err != -EPERM && err != -ENODEV)
 328                         BT_ERR("%s urb %p failed to resubmit (%d)",
 329                                                 hdev->name, urb, -err);
 330                 usb_unanchor_urb(urb);
 331         }
 332 }
 333
 334 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 335 {
 336         struct btusb_data *data = hci_get_drvdata(hdev);
 337         struct urb *urb;
 338         unsigned char *buf;
 339         unsigned int pipe;
 340         int err, size;
 341
 342         BT_DBG("%s", hdev->name);
 343
 344         if (!data->intr_ep)
 345                 return -ENODEV;
 346
 347         urb = usb_alloc_urb(0, mem_flags);
 348         if (!urb)
 349                 return -ENOMEM;
 350
 351         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 352
 353         buf = kmalloc(size, mem_flags);
 354         if (!buf) {
 355                 usb_free_urb(urb);
 356                 return -ENOMEM;
 357         }
 358
 359         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 360
 361         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 362                                                 btusb_intr_complete, hdev,
 363                                                 data->intr_ep->bInterval);
 364
 365         urb->transfer_flags |= URB_FREE_BUFFER;
 366
 367         usb_anchor_urb(urb, &data->intr_anchor);
 368
 369         err = usb_submit_urb(urb, mem_flags);
 370         if (err < 0) {
 371                 if (err != -EPERM && err != -ENODEV)
 372                         BT_ERR("%s urb %p submission failed (%d)",
 373                                                 hdev->name, urb, -err);
 374                 usb_unanchor_urb(urb);
 375         }
 376
 377         usb_free_urb(urb);
 378
 379         return err;
 380 }
 381
 382 static void btusb_bulk_complete(struct urb *urb)
 383 {
 384         struct hci_dev *hdev = urb->context;
 385         struct btusb_data *data = hci_get_drvdata(hdev);
 386         int err;
 387
 388         BT_DBG("%s urb %p status %d count %d", hdev->name,
 389                                         urb, urb->status, urb->actual_length);
 390
 391         if (!test_bit(HCI_RUNNING, &hdev->flags))
 392                 return;
 393
 394         if (urb->status == 0) {
 395                 hdev->stat.byte_rx += urb->actual_length;
 396
 397                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 398                                                 urb->transfer_buffer,
 399                                                 urb->actual_length) < 0) {
 400                         BT_ERR("%s corrupted ACL packet", hdev->name);
 401                         hdev->stat.err_rx++;
 402                 }
 403         } else if (urb->status == -ENOENT) {
 404                 /* Avoid suspend failed when usb_kill_urb */
 405                 return;
 406         }
 407
 408         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 409                 return;
 410
 411         usb_anchor_urb(urb, &data->bulk_anchor);
 412         usb_mark_last_busy(data->udev);
 413
 414         err = usb_submit_urb(urb, GFP_ATOMIC);
 415         if (err < 0) {
 416                 /* -EPERM: urb is being killed;
 417                  * -ENODEV: device got disconnected */
 418                 if (err != -EPERM && err != -ENODEV)
 419                         BT_ERR("%s urb %p failed to resubmit (%d)",
 420                                                 hdev->name, urb, -err);
 421                 usb_unanchor_urb(urb);
 422         }
 423 }
 424
 425 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 426 {
 427         struct btusb_data *data = hci_get_drvdata(hdev);
 428         struct urb *urb;
 429         unsigned char *buf;
 430         unsigned int pipe;
 431         int err, size = HCI_MAX_FRAME_SIZE;
 432
 433         BT_DBG("%s", hdev->name);
 434
 435         if (!data->bulk_rx_ep)
 436                 return -ENODEV;
 437
 438         urb = usb_alloc_urb(0, mem_flags);
 439         if (!urb)
 440                 return -ENOMEM;
 441
 442         buf = kmalloc(size, mem_flags);
 443         if (!buf) {
 444                 usb_free_urb(urb);
 445                 return -ENOMEM;
 446         }
 447
 448         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 449
 450         usb_fill_bulk_urb(urb, data->udev, pipe,
 451                                         buf, size, btusb_bulk_complete, hdev);
 452
 453         urb->transfer_flags |= URB_FREE_BUFFER;
 454
 455         usb_mark_last_busy(data->udev);
 456         usb_anchor_urb(urb, &data->bulk_anchor);
 457
 458         err = usb_submit_urb(urb, mem_flags);
 459         if (err < 0) {
 460                 if (err != -EPERM && err != -ENODEV)
 461                         BT_ERR("%s urb %p submission failed (%d)",
 462                                                 hdev->name, urb, -err);
 463                 usb_unanchor_urb(urb);
 464         }
 465
 466         usb_free_urb(urb);
 467
 468         return err;
 469 }
 470
 471 static void btusb_isoc_complete(struct urb *urb)
 472 {
 473         struct hci_dev *hdev = urb->context;
 474         struct btusb_data *data = hci_get_drvdata(hdev);
 475         int i, err;
 476
 477         BT_DBG("%s urb %p status %d count %d", hdev->name,
 478                                         urb, urb->status, urb->actual_length);
 479
 480         if (!test_bit(HCI_RUNNING, &hdev->flags))
 481                 return;
 482
 483         if (urb->status == 0) {
 484                 for (i = 0; i < urb->number_of_packets; i++) {
 485                         unsigned int offset = urb->iso_frame_desc[i].offset;
 486                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 487
 488                         if (urb->iso_frame_desc[i].status)
 489                                 continue;
 490
 491                         hdev->stat.byte_rx += length;
 492
 493                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 494                                                 urb->transfer_buffer + offset,
 495                                                                 length) < 0) {
 496                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 497                                 hdev->stat.err_rx++;
 498                         }
 499                 }
 500         } else if (urb->status == -ENOENT) {
 501                 /* Avoid suspend failed when usb_kill_urb */
 502                 return;
 503         }
 504
 505         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 506                 return;
 507
 508         usb_anchor_urb(urb, &data->isoc_anchor);
 509
 510         err = usb_submit_urb(urb, GFP_ATOMIC);
 511         if (err < 0) {
 512                 /* -EPERM: urb is being killed;
 513                  * -ENODEV: device got disconnected */
 514                 if (err != -EPERM && err != -ENODEV)
 515                         BT_ERR("%s urb %p failed to resubmit (%d)",
 516                                                 hdev->name, urb, -err);
 517                 usb_unanchor_urb(urb);
 518         }
 519 }
 520
 521 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 522 {
 523         int i, offset = 0;
 524
 525         BT_DBG("len %d mtu %d", len, mtu);
 526
 527         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 528                                         i++, offset += mtu, len -= mtu) {
 529                 urb->iso_frame_desc[i].offset = offset;
 530                 urb->iso_frame_desc[i].length = mtu;
 531         }
 532
 533         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 534                 urb->iso_frame_desc[i].offset = offset;
 535                 urb->iso_frame_desc[i].length = len;
 536                 i++;
 537         }
 538
 539         urb->number_of_packets = i;
 540 }
 541
 542 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 543 {
 544         struct btusb_data *data = hci_get_drvdata(hdev);
 545         struct urb *urb;
 546         unsigned char *buf;
 547         unsigned int pipe;
 548         int err, size;
 549
 550         BT_DBG("%s", hdev->name);
 551
 552         if (!data->isoc_rx_ep)
 553                 return -ENODEV;
 554
 555         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 556         if (!urb)
 557                 return -ENOMEM;
 558
 559         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 560                                                 BTUSB_MAX_ISOC_FRAMES;
 561
 562         buf = kmalloc(size, mem_flags);
 563         if (!buf) {
 564                 usb_free_urb(urb);
 565                 return -ENOMEM;
 566         }
 567
 568         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 569
 570         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 571                                 hdev, data->isoc_rx_ep->bInterval);
 572
 573         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 574
 575         __fill_isoc_descriptor(urb, size,
 576                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 577
 578         usb_anchor_urb(urb, &data->isoc_anchor);
 579
 580         err = usb_submit_urb(urb, mem_flags);
 581         if (err < 0) {
 582                 if (err != -EPERM && err != -ENODEV)
 583                         BT_ERR("%s urb %p submission failed (%d)",
 584                                                 hdev->name, urb, -err);
 585                 usb_unanchor_urb(urb);
 586         }
 587
 588         usb_free_urb(urb);
 589
 590         return err;
 591 }
 592
 593 static void btusb_tx_complete(struct urb *urb)
 594 {
 595         struct sk_buff *skb = urb->context;
 596         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 597         struct btusb_data *data = hci_get_drvdata(hdev);
 598
 599         BT_DBG("%s urb %p status %d count %d", hdev->name,
 600                                         urb, urb->status, urb->actual_length);
 601
 602         if (!test_bit(HCI_RUNNING, &hdev->flags))
 603                 goto done;
 604
 605         if (!urb->status)
 606                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 607         else
 608                 hdev->stat.err_tx++;
 609
 610 done:
 611         spin_lock(&data->txlock);
 612         data->tx_in_flight--;
 613         spin_unlock(&data->txlock);
 614
 615         kfree(urb->setup_packet);
 616
 617         kfree_skb(skb);
 618 }
 619
 620 static void btusb_isoc_tx_complete(struct urb *urb)
 621 {
 622         struct sk_buff *skb = urb->context;
 623         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 624
 625         BT_DBG("%s urb %p status %d count %d", hdev->name,
 626                                         urb, urb->status, urb->actual_length);
 627
 628         if (!test_bit(HCI_RUNNING, &hdev->flags))
 629                 goto done;
 630
 631         if (!urb->status)
 632                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 633         else
 634                 hdev->stat.err_tx++;
 635
 636 done:
 637         kfree(urb->setup_packet);
 638
 639         kfree_skb(skb);
 640 }
 641
 642 static int btusb_open(struct hci_dev *hdev)
 643 {
 644         struct btusb_data *data = hci_get_drvdata(hdev);
 645         int err;
 646
 647         BT_DBG("%s", hdev->name);
 648
 649         err = usb_autopm_get_interface(data->intf);
 650         if (err < 0)
 651                 return err;
 652
 653         data->intf->needs_remote_wakeup = 1;
 654
 655         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 656                 goto done;
 657
 658         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 659                 goto done;
 660
 661         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 662         if (err < 0)
 663                 goto failed;
 664
 665         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 666         if (err < 0) {
 667                 usb_kill_anchored_urbs(&data->intr_anchor);
 668                 goto failed;
 669         }
 670
 671         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 672         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 673
 674 done:
 675         usb_autopm_put_interface(data->intf);
 676         return 0;
 677
 678 failed:
 679         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 680         clear_bit(HCI_RUNNING, &hdev->flags);
 681         usb_autopm_put_interface(data->intf);
 682         return err;
 683 }
 684
 685 static void btusb_stop_traffic(struct btusb_data *data)
 686 {
 687         usb_kill_anchored_urbs(&data->intr_anchor);
 688         usb_kill_anchored_urbs(&data->bulk_anchor);
 689         usb_kill_anchored_urbs(&data->isoc_anchor);
 690 }
 691
 692 static int btusb_close(struct hci_dev *hdev)
 693 {
 694         struct btusb_data *data = hci_get_drvdata(hdev);
 695         int err;
 696
 697         BT_DBG("%s", hdev->name);
 698
 699         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 700                 return 0;
 701
 702         cancel_work_sync(&data->work);
 703         cancel_work_sync(&data->waker);
 704
 705         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 706         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 707         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 708
 709         btusb_stop_traffic(data);
 710         err = usb_autopm_get_interface(data->intf);
 711         if (err < 0)
 712                 goto failed;
 713
 714         data->intf->needs_remote_wakeup = 0;
 715         usb_autopm_put_interface(data->intf);
 716
 717 failed:
 718         usb_scuttle_anchored_urbs(&data->deferred);
 719         return 0;
 720 }
 721
 722 static int btusb_flush(struct hci_dev *hdev)
 723 {
 724         struct btusb_data *data = hci_get_drvdata(hdev);
 725
 726         BT_DBG("%s", hdev->name);
 727
 728         usb_kill_anchored_urbs(&data->tx_anchor);
 729
 730         return 0;
 731 }
 732
 733 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 734 {
 735         struct btusb_data *data = hci_get_drvdata(hdev);
 736         struct usb_ctrlrequest *dr;
 737         struct urb *urb;
 738         unsigned int pipe;
 739         int err;
 740
 741         BT_DBG("%s", hdev->name);
 742
 743         if (!test_bit(HCI_RUNNING, &hdev->flags))
 744                 return -EBUSY;
 745
 746         skb->dev = (void *) hdev;
 747
 748         switch (bt_cb(skb)->pkt_type) {
 749         case HCI_COMMAND_PKT:
 750                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 751                 if (!urb)
 752                         return -ENOMEM;
 753
 754                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 755                 if (!dr) {
 756                         usb_free_urb(urb);
 757                         return -ENOMEM;
 758                 }
 759
 760                 dr->bRequestType = data->cmdreq_type;
 761                 dr->bRequest     = 0;
 762                 dr->wIndex       = 0;
 763                 dr->wValue       = 0;
 764                 dr->wLength      = __cpu_to_le16(skb->len);
 765
 766                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 767
 768                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 769                                 skb->data, skb->len, btusb_tx_complete, skb);
 770
 771                 hdev->stat.cmd_tx++;
 772                 break;
 773
 774         case HCI_ACLDATA_PKT:
 775                 if (!data->bulk_tx_ep)
 776                         return -ENODEV;
 777
 778                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 779                 if (!urb)
 780                         return -ENOMEM;
 781
 782                 pipe = usb_sndbulkpipe(data->udev,
 783                                         data->bulk_tx_ep->bEndpointAddress);
 784
 785                 usb_fill_bulk_urb(urb, data->udev, pipe,
 786                                 skb->data, skb->len, btusb_tx_complete, skb);
 787
 788                 hdev->stat.acl_tx++;
 789                 break;
 790
 791         case HCI_SCODATA_PKT:
 792                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 793                         return -ENODEV;
 794
 795                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 796                 if (!urb)
 797                         return -ENOMEM;
 798
 799                 pipe = usb_sndisocpipe(data->udev,
 800                                         data->isoc_tx_ep->bEndpointAddress);
 801
 802                 usb_fill_int_urb(urb, data->udev, pipe,
 803                                 skb->data, skb->len, btusb_isoc_tx_complete,
 804                                 skb, data->isoc_tx_ep->bInterval);
 805
 806                 urb->transfer_flags  = URB_ISO_ASAP;
 807
 808                 __fill_isoc_descriptor(urb, skb->len,
 809                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 810
 811                 hdev->stat.sco_tx++;
 812                 goto skip_waking;
 813
 814         default:
 815                 return -EILSEQ;
 816         }
 817
 818         err = inc_tx(data);
 819         if (err) {
 820                 usb_anchor_urb(urb, &data->deferred);
 821                 schedule_work(&data->waker);
 822                 err = 0;
 823                 goto done;
 824         }
 825
 826 skip_waking:
 827         usb_anchor_urb(urb, &data->tx_anchor);
 828
 829         err = usb_submit_urb(urb, GFP_ATOMIC);
 830         if (err < 0) {
 831                 if (err != -EPERM && err != -ENODEV)
 832                         BT_ERR("%s urb %p submission failed (%d)",
 833                                                 hdev->name, urb, -err);
 834                 kfree(urb->setup_packet);
 835                 usb_unanchor_urb(urb);
 836         } else {
 837                 usb_mark_last_busy(data->udev);
 838         }
 839
 840 done:
 841         usb_free_urb(urb);
 842         return err;
 843 }
 844
 845 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 846 {
 847         struct btusb_data *data = hci_get_drvdata(hdev);
 848
 849         BT_DBG("%s evt %d", hdev->name, evt);
 850
 851         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 852                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 853                 schedule_work(&data->work);
 854         }
 855 }
 856
 857 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 858 {
 859         struct btusb_data *data = hci_get_drvdata(hdev);
 860         struct usb_interface *intf = data->isoc;
 861         struct usb_endpoint_descriptor *ep_desc;
 862         int i, err;
 863
 864         if (!data->isoc)
 865                 return -ENODEV;
 866
 867         err = usb_set_interface(data->udev, 1, altsetting);
 868         if (err < 0) {
 869                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 870                 return err;
 871         }
 872
 873         data->isoc_altsetting = altsetting;
 874
 875         data->isoc_tx_ep = NULL;
 876         data->isoc_rx_ep = NULL;
 877
 878         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 879                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 880
 881                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 882                         data->isoc_tx_ep = ep_desc;
 883                         continue;
 884                 }
 885
 886                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 887                         data->isoc_rx_ep = ep_desc;
 888                         continue;
 889                 }
 890         }
 891
 892         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 893                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 894                 return -ENODEV;
 895         }
 896
 897         return 0;
 898 }
 899
 900 static void btusb_work(struct work_struct *work)
 901 {
 902         struct btusb_data *data = container_of(work, struct btusb_data, work);
 903         struct hci_dev *hdev = data->hdev;
 904         int new_alts;
 905         int err;
 906
 907         if (data->sco_num > 0) {
 908                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 909                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 910                         if (err < 0) {
 911                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 912                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 913                                 return;
 914                         }
 915
 916                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 917                 }
 918
 919                 if (hdev->voice_setting & 0x0020) {
 920                         static const int alts[3] = { 2, 4, 5 };
 921                         new_alts = alts[data->sco_num - 1];
 922                 } else {
 923                         new_alts = data->sco_num;
 924                 }
 925
 926                 if (data->isoc_altsetting != new_alts) {
 927                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 928                         usb_kill_anchored_urbs(&data->isoc_anchor);
 929
 930                         if (__set_isoc_interface(hdev, new_alts) < 0)
 931                                 return;
 932                 }
 933
 934                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 935                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 936                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 937                         else
 938                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 939                 }
 940         } else {
 941                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 942                 usb_kill_anchored_urbs(&data->isoc_anchor);
 943
 944                 __set_isoc_interface(hdev, 0);
 945                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 946                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 947         }
 948 }
 949
 950 static void btusb_waker(struct work_struct *work)
 951 {
 952         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 953         int err;
 954
 955         err = usb_autopm_get_interface(data->intf);
 956         if (err < 0)
 957                 return;
 958
 959         usb_autopm_put_interface(data->intf);
 960 }
 961
 962 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 963 {
 964         struct sk_buff *skb;
 965         u8 val = 0x00;
 966
 967         BT_DBG("%s", hdev->name);
 968
 969         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 970         if (IS_ERR(skb))
 971                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 972         else
 973                 kfree_skb(skb);
 974
 975         return 0;
 976 }
 977
 978 static int btusb_setup_csr(struct hci_dev *hdev)
 979 {
 980         struct hci_rp_read_local_version *rp;
 981         struct sk_buff *skb;
 982         int ret;
 983
 984         BT_DBG("%s", hdev->name);
 985
 986         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 987                              HCI_INIT_TIMEOUT);
 988         if (IS_ERR(skb)) {
 989                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 990                 return -PTR_ERR(skb);
 991         }
 992
 993         rp = (struct hci_rp_read_local_version *) skb->data;
 994
 995         if (!rp->status) {
 996                 if (le16_to_cpu(rp->manufacturer) != 10) {
 997                         /* Clear the reset quirk since this is not an actual
 998                          * early Bluetooth 1.1 device from CSR.
 999                          */
1000                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1001
1002                         /* These fake CSR controllers have all a broken
1003                          * stored link key handling and so just disable it.
1004                          */
1005                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1006                                 &hdev->quirks);
1007                 }
1008         }
1009
1010         ret = -bt_to_errno(rp->status);
1011
1012         kfree_skb(skb);
1013
1014         return ret;
1015 }
1016
1017 struct intel_version {
1018         u8 status;
1019         u8 hw_platform;
1020         u8 hw_variant;
1021         u8 hw_revision;
1022         u8 fw_variant;
1023         u8 fw_revision;
1024         u8 fw_build_num;
1025         u8 fw_build_ww;
1026         u8 fw_build_yy;
1027         u8 fw_patch_num;
1028 } __packed;
1029
1030 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1031                                                 struct intel_version *ver)
1032 {
1033         const struct firmware *fw;
1034         char fwname[64];
1035         int ret;
1036
1037         snprintf(fwname, sizeof(fwname),
1038                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1039                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1040                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1041                  ver->fw_build_ww, ver->fw_build_yy);
1042
1043         ret = request_firmware(&fw, fwname, &hdev->dev);
1044         if (ret < 0) {
1045                 if (ret == -EINVAL) {
1046                         BT_ERR("%s Intel firmware file request failed (%d)",
1047                                hdev->name, ret);
1048                         return NULL;
1049                 }
1050
1051                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1052                        hdev->name, fwname, ret);
1053
1054                 /* If the correct firmware patch file is not found, use the
1055                  * default firmware patch file instead
1056                  */
1057                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1058                          ver->hw_platform, ver->hw_variant);
1059                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1060                         BT_ERR("%s failed to open default Intel fw file: %s",
1061                                hdev->name, fwname);
1062                         return NULL;
1063                 }
1064         }
1065
1066         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1067
1068         return fw;
1069 }
1070
1071 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1072                                       const struct firmware *fw,
1073                                       const u8 **fw_ptr, int *disable_patch)
1074 {
1075         struct sk_buff *skb;
1076         struct hci_command_hdr *cmd;
1077         const u8 *cmd_param;
1078         struct hci_event_hdr *evt = NULL;
1079         const u8 *evt_param = NULL;
1080         int remain = fw->size - (*fw_ptr - fw->data);
1081
1082         /* The first byte indicates the types of the patch command or event.
1083          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1084          * in the current firmware buffer doesn't start with 0x01 or
1085          * the size of remain buffer is smaller than HCI command header,
1086          * the firmware file is corrupted and it should stop the patching
1087          * process.
1088          */
1089         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1090                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1091                 return -EINVAL;
1092         }
1093         (*fw_ptr)++;
1094         remain--;
1095
1096         cmd = (struct hci_command_hdr *)(*fw_ptr);
1097         *fw_ptr += sizeof(*cmd);
1098         remain -= sizeof(*cmd);
1099
1100         /* Ensure that the remain firmware data is long enough than the length
1101          * of command parameter. If not, the firmware file is corrupted.
1102          */
1103         if (remain < cmd->plen) {
1104                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1105                 return -EFAULT;
1106         }
1107
1108         /* If there is a command that loads a patch in the firmware
1109          * file, then enable the patch upon success, otherwise just
1110          * disable the manufacturer mode, for example patch activation
1111          * is not required when the default firmware patch file is used
1112          * because there are no patch data to load.
1113          */
1114         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1115                 *disable_patch = 0;
1116
1117         cmd_param = *fw_ptr;
1118         *fw_ptr += cmd->plen;
1119         remain -= cmd->plen;
1120
1121         /* This reads the expected events when the above command is sent to the
1122          * device. Some vendor commands expects more than one events, for
1123          * example command status event followed by vendor specific event.
1124          * For this case, it only keeps the last expected event. so the command
1125          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1126          * last expected event.
1127          */
1128         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1129                 (*fw_ptr)++;
1130                 remain--;
1131
1132                 evt = (struct hci_event_hdr *)(*fw_ptr);
1133                 *fw_ptr += sizeof(*evt);
1134                 remain -= sizeof(*evt);
1135
1136                 if (remain < evt->plen) {
1137                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1138                                hdev->name);
1139                         return -EFAULT;
1140                 }
1141
1142                 evt_param = *fw_ptr;
1143                 *fw_ptr += evt->plen;
1144                 remain -= evt->plen;
1145         }
1146
1147         /* Every HCI commands in the firmware file has its correspond event.
1148          * If event is not found or remain is smaller than zero, the firmware
1149          * file is corrupted.
1150          */
1151         if (!evt || !evt_param || remain < 0) {
1152                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1153                 return -EFAULT;
1154         }
1155
1156         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1157                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1158         if (IS_ERR(skb)) {
1159                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1160                        hdev->name, cmd->opcode, PTR_ERR(skb));
1161                 return PTR_ERR(skb);
1162         }
1163
1164         /* It ensures that the returned event matches the event data read from
1165          * the firmware file. At fist, it checks the length and then
1166          * the contents of the event.
1167          */
1168         if (skb->len != evt->plen) {
1169                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1170                        le16_to_cpu(cmd->opcode));
1171                 kfree_skb(skb);
1172                 return -EFAULT;
1173         }
1174
1175         if (memcmp(skb->data, evt_param, evt->plen)) {
1176                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1177                        hdev->name, le16_to_cpu(cmd->opcode));
1178                 kfree_skb(skb);
1179                 return -EFAULT;
1180         }
1181         kfree_skb(skb);
1182
1183         return 0;
1184 }
1185
1186 static int btusb_setup_intel(struct hci_dev *hdev)
1187 {
1188         struct sk_buff *skb;
1189         const struct firmware *fw;
1190         const u8 *fw_ptr;
1191         int disable_patch;
1192         struct intel_version *ver;
1193
1194         const u8 mfg_enable[] = { 0x01, 0x00 };
1195         const u8 mfg_disable[] = { 0x00, 0x00 };
1196         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1197         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1198
1199         BT_DBG("%s", hdev->name);
1200
1201         /* The controller has a bug with the first HCI command sent to it
1202          * returning number of completed commands as zero. This would stall the
1203          * command processing in the Bluetooth core.
1204          *
1205          * As a workaround, send HCI Reset command first which will reset the
1206          * number of completed commands and allow normal command processing
1207          * from now on.
1208          */
1209         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1210         if (IS_ERR(skb)) {
1211                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1212                        hdev->name, PTR_ERR(skb));
1213                 return PTR_ERR(skb);
1214         }
1215         kfree_skb(skb);
1216
1217         /* Read Intel specific controller version first to allow selection of
1218          * which firmware file to load.
1219          *
1220          * The returned information are hardware variant and revision plus
1221          * firmware variant, revision and build number.
1222          */
1223         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1224         if (IS_ERR(skb)) {
1225                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1226                        hdev->name, PTR_ERR(skb));
1227                 return PTR_ERR(skb);
1228         }
1229
1230         if (skb->len != sizeof(*ver)) {
1231                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1232                 kfree_skb(skb);
1233                 return -EIO;
1234         }
1235
1236         ver = (struct intel_version *)skb->data;
1237         if (ver->status) {
1238                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1239                        ver->status);
1240                 kfree_skb(skb);
1241                 return -bt_to_errno(ver->status);
1242         }
1243
1244         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1245                 hdev->name, ver->hw_platform, ver->hw_variant,
1246                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1247                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1248                 ver->fw_patch_num);
1249
1250         /* fw_patch_num indicates the version of patch the device currently
1251          * have. If there is no patch data in the device, it is always 0x00.
1252          * So, if it is other than 0x00, no need to patch the deivce again.
1253          */
1254         if (ver->fw_patch_num) {
1255                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1256                         hdev->name, ver->fw_patch_num);
1257                 kfree_skb(skb);
1258                 return 0;
1259         }
1260
1261         /* Opens the firmware patch file based on the firmware version read
1262          * from the controller. If it fails to open the matching firmware
1263          * patch file, it tries to open the default firmware patch file.
1264          * If no patch file is found, allow the device to operate without
1265          * a patch.
1266          */
1267         fw = btusb_setup_intel_get_fw(hdev, ver);
1268         if (!fw) {
1269                 kfree_skb(skb);
1270                 return 0;
1271         }
1272         fw_ptr = fw->data;
1273
1274         /* This Intel specific command enables the manufacturer mode of the
1275          * controller.
1276          *
1277          * Only while this mode is enabled, the driver can download the
1278          * firmware patch data and configuration parameters.
1279          */
1280         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1281         if (IS_ERR(skb)) {
1282                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1283                        hdev->name, PTR_ERR(skb));
1284                 release_firmware(fw);
1285                 return PTR_ERR(skb);
1286         }
1287
1288         if (skb->data[0]) {
1289                 u8 evt_status = skb->data[0];
1290                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1291                        hdev->name, evt_status);
1292                 kfree_skb(skb);
1293                 release_firmware(fw);
1294                 return -bt_to_errno(evt_status);
1295         }
1296         kfree_skb(skb);
1297
1298         disable_patch = 1;
1299
1300         /* The firmware data file consists of list of Intel specific HCI
1301          * commands and its expected events. The first byte indicates the
1302          * type of the message, either HCI command or HCI event.
1303          *
1304          * It reads the command and its expected event from the firmware file,
1305          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1306          * the returned event is compared with the event read from the firmware
1307          * file and it will continue until all the messages are downloaded to
1308          * the controller.
1309          *
1310          * Once the firmware patching is completed successfully,
1311          * the manufacturer mode is disabled with reset and activating the
1312          * downloaded patch.
1313          *
1314          * If the firmware patching fails, the manufacturer mode is
1315          * disabled with reset and deactivating the patch.
1316          *
1317          * If the default patch file is used, no reset is done when disabling
1318          * the manufacturer.
1319          */
1320         while (fw->size > fw_ptr - fw->data) {
1321                 int ret;
1322
1323                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1324                                                  &disable_patch);
1325                 if (ret < 0)
1326                         goto exit_mfg_deactivate;
1327         }
1328
1329         release_firmware(fw);
1330
1331         if (disable_patch)
1332                 goto exit_mfg_disable;
1333
1334         /* Patching completed successfully and disable the manufacturer mode
1335          * with reset and activate the downloaded firmware patches.
1336          */
1337         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1338                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1339         if (IS_ERR(skb)) {
1340                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1341                        hdev->name, PTR_ERR(skb));
1342                 return PTR_ERR(skb);
1343         }
1344         kfree_skb(skb);
1345
1346         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1347                 hdev->name);
1348
1349         return 0;
1350
1351 exit_mfg_disable:
1352         /* Disable the manufacturer mode without reset */
1353         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1354                              HCI_INIT_TIMEOUT);
1355         if (IS_ERR(skb)) {
1356                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1357                        hdev->name, PTR_ERR(skb));
1358                 return PTR_ERR(skb);
1359         }
1360         kfree_skb(skb);
1361
1362         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1363         return 0;
1364
1365 exit_mfg_deactivate:
1366         release_firmware(fw);
1367
1368         /* Patching failed. Disable the manufacturer mode with reset and
1369          * deactivate the downloaded firmware patches.
1370          */
1371         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1372                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1373         if (IS_ERR(skb)) {
1374                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1375                        hdev->name, PTR_ERR(skb));
1376                 return PTR_ERR(skb);
1377         }
1378         kfree_skb(skb);
1379
1380         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1381                 hdev->name);
1382
1383         return 0;
1384 }
1385
1386 static int btusb_probe(struct usb_interface *intf,
1387                                 const struct usb_device_id *id)
1388 {
1389         struct usb_endpoint_descriptor *ep_desc;
1390         struct btusb_data *data;
1391         struct hci_dev *hdev;
1392         int i, err;
1393
1394         BT_DBG("intf %p id %p", intf, id);
1395
1396         /* interface numbers are hardcoded in the spec */
1397         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1398                 return -ENODEV;
1399
1400         if (!id->driver_info) {
1401                 const struct usb_device_id *match;
1402                 match = usb_match_id(intf, blacklist_table);
1403                 if (match)
1404                         id = match;
1405         }
1406
1407         if (id->driver_info == BTUSB_IGNORE)
1408                 return -ENODEV;
1409
1410         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1411                 return -ENODEV;
1412
1413         if (ignore_csr && id->driver_info & BTUSB_CSR)
1414                 return -ENODEV;
1415
1416         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1417                 return -ENODEV;
1418
1419         if (id->driver_info & BTUSB_ATH3012) {
1420                 struct usb_device *udev = interface_to_usbdev(intf);
1421
1422                 /* Old firmware would otherwise let ath3k driver load
1423                  * patch and sysconfig files */
1424                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1425                         return -ENODEV;
1426         }
1427
1428         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1429         if (!data)
1430                 return -ENOMEM;
1431
1432         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1433                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1434
1435                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1436                         data->intr_ep = ep_desc;
1437                         continue;
1438                 }
1439
1440                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1441                         data->bulk_tx_ep = ep_desc;
1442                         continue;
1443                 }
1444
1445                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1446                         data->bulk_rx_ep = ep_desc;
1447                         continue;
1448                 }
1449         }
1450
1451         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1452                 return -ENODEV;
1453
1454         data->cmdreq_type = USB_TYPE_CLASS;
1455
1456         data->udev = interface_to_usbdev(intf);
1457         data->intf = intf;
1458
1459         spin_lock_init(&data->lock);
1460
1461         INIT_WORK(&data->work, btusb_work);
1462         INIT_WORK(&data->waker, btusb_waker);
1463         spin_lock_init(&data->txlock);
1464
1465         init_usb_anchor(&data->tx_anchor);
1466         init_usb_anchor(&data->intr_anchor);
1467         init_usb_anchor(&data->bulk_anchor);
1468         init_usb_anchor(&data->isoc_anchor);
1469         init_usb_anchor(&data->deferred);
1470
1471         hdev = hci_alloc_dev();
1472         if (!hdev)
1473                 return -ENOMEM;
1474
1475         hdev->bus = HCI_USB;
1476         hci_set_drvdata(hdev, data);
1477
1478         data->hdev = hdev;
1479
1480         SET_HCIDEV_DEV(hdev, &intf->dev);
1481
1482         hdev->open   = btusb_open;
1483         hdev->close  = btusb_close;
1484         hdev->flush  = btusb_flush;
1485         hdev->send   = btusb_send_frame;
1486         hdev->notify = btusb_notify;
1487
1488         if (id->driver_info & BTUSB_BCM92035)
1489                 hdev->setup = btusb_setup_bcm92035;
1490
1491         if (id->driver_info & BTUSB_INTEL)
1492                 hdev->setup = btusb_setup_intel;
1493
1494         /* Interface numbers are hardcoded in the specification */
1495         data->isoc = usb_ifnum_to_if(data->udev, 1);
1496
1497         if (!reset)
1498                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1499
1500         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1501                 if (!disable_scofix)
1502                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1503         }
1504
1505         if (id->driver_info & BTUSB_BROKEN_ISOC)
1506                 data->isoc = NULL;
1507
1508         if (id->driver_info & BTUSB_DIGIANSWER) {
1509                 data->cmdreq_type = USB_TYPE_VENDOR;
1510                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1511         }
1512
1513         if (id->driver_info & BTUSB_CSR) {
1514                 struct usb_device *udev = data->udev;
1515                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1516
1517                 /* Old firmware would otherwise execute USB reset */
1518                 if (bcdDevice < 0x117)
1519                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1520
1521                 /* Fake CSR devices with broken commands */
1522                 if (bcdDevice <= 0x100)
1523                         hdev->setup = btusb_setup_csr;
1524         }
1525
1526         if (id->driver_info & BTUSB_SNIFFER) {
1527                 struct usb_device *udev = data->udev;
1528
1529                 /* New sniffer firmware has crippled HCI interface */
1530                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1531                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1532
1533                 data->isoc = NULL;
1534         }
1535
1536         if (data->isoc) {
1537                 err = usb_driver_claim_interface(&btusb_driver,
1538                                                         data->isoc, data);
1539                 if (err < 0) {
1540                         hci_free_dev(hdev);
1541                         return err;
1542                 }
1543         }
1544
1545         err = hci_register_dev(hdev);
1546         if (err < 0) {
1547                 hci_free_dev(hdev);
1548                 return err;
1549         }
1550
1551         usb_set_intfdata(intf, data);
1552
1553         return 0;
1554 }
1555
1556 static void btusb_disconnect(struct usb_interface *intf)
1557 {
1558         struct btusb_data *data = usb_get_intfdata(intf);
1559         struct hci_dev *hdev;
1560
1561         BT_DBG("intf %p", intf);
1562
1563         if (!data)
1564                 return;
1565
1566         hdev = data->hdev;
1567         usb_set_intfdata(data->intf, NULL);
1568
1569         if (data->isoc)
1570                 usb_set_intfdata(data->isoc, NULL);
1571
1572         hci_unregister_dev(hdev);
1573
1574         if (intf == data->isoc)
1575                 usb_driver_release_interface(&btusb_driver, data->intf);
1576         else if (data->isoc)
1577                 usb_driver_release_interface(&btusb_driver, data->isoc);
1578
1579         hci_free_dev(hdev);
1580 }
1581
1582 #ifdef CONFIG_PM
1583 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1584 {
1585         struct btusb_data *data = usb_get_intfdata(intf);
1586
1587         BT_DBG("intf %p", intf);
1588
1589         if (data->suspend_count++)
1590                 return 0;
1591
1592         spin_lock_irq(&data->txlock);
1593         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1594                 set_bit(BTUSB_SUSPENDING, &data->flags);
1595                 spin_unlock_irq(&data->txlock);
1596         } else {
1597                 spin_unlock_irq(&data->txlock);
1598                 data->suspend_count--;
1599                 return -EBUSY;
1600         }
1601
1602         cancel_work_sync(&data->work);
1603
1604         btusb_stop_traffic(data);
1605         usb_kill_anchored_urbs(&data->tx_anchor);
1606
1607         return 0;
1608 }
1609
1610 static void play_deferred(struct btusb_data *data)
1611 {
1612         struct urb *urb;
1613         int err;
1614
1615         while ((urb = usb_get_from_anchor(&data->deferred))) {
1616                 err = usb_submit_urb(urb, GFP_ATOMIC);
1617                 if (err < 0)
1618                         break;
1619
1620                 data->tx_in_flight++;
1621         }
1622         usb_scuttle_anchored_urbs(&data->deferred);
1623 }
1624
1625 static int btusb_resume(struct usb_interface *intf)
1626 {
1627         struct btusb_data *data = usb_get_intfdata(intf);
1628         struct hci_dev *hdev = data->hdev;
1629         int err = 0;
1630
1631         BT_DBG("intf %p", intf);
1632
1633         if (--data->suspend_count)
1634                 return 0;
1635
1636         if (!test_bit(HCI_RUNNING, &hdev->flags))
1637                 goto done;
1638
1639         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1640                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1641                 if (err < 0) {
1642                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1643                         goto failed;
1644                 }
1645         }
1646
1647         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1648                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1649                 if (err < 0) {
1650                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1651                         goto failed;
1652                 }
1653
1654                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1655         }
1656
1657         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1658                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1659                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1660                 else
1661                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1662         }
1663
1664         spin_lock_irq(&data->txlock);
1665         play_deferred(data);
1666         clear_bit(BTUSB_SUSPENDING, &data->flags);
1667         spin_unlock_irq(&data->txlock);
1668         schedule_work(&data->work);
1669
1670         return 0;
1671
1672 failed:
1673         usb_scuttle_anchored_urbs(&data->deferred);
1674 done:
1675         spin_lock_irq(&data->txlock);
1676         clear_bit(BTUSB_SUSPENDING, &data->flags);
1677         spin_unlock_irq(&data->txlock);
1678
1679         return err;
1680 }
1681 #endif
1682
1683 static struct usb_driver btusb_driver = {
1684         .name           = "btusb",
1685         .probe          = btusb_probe,
1686         .disconnect     = btusb_disconnect,
1687 #ifdef CONFIG_PM
1688         .suspend        = btusb_suspend,
1689         .resume         = btusb_resume,
1690 #endif
1691         .id_table       = btusb_table,
1692         .supports_autosuspend = 1,
1693         .disable_hub_initiated_lpm = 1,
1694 };
1695
1696 module_usb_driver(btusb_driver);
1697
1698 module_param(ignore_dga, bool, 0644);
1699 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1700
1701 module_param(ignore_csr, bool, 0644);
1702 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1703
1704 module_param(ignore_sniffer, bool, 0644);
1705 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1706
1707 module_param(disable_scofix, bool, 0644);
1708 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1709
1710 module_param(force_scofix, bool, 0644);
1711 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1712
1713 module_param(reset, bool, 0644);
1714 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1715
1716 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1717 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1718 MODULE_VERSION(VERSION);
1719 MODULE_LICENSE("GPL");