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 disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51
  52 static const struct usb_device_id btusb_table[] = {
  53         /* Generic Bluetooth USB device */
  54         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  55
  56         /* Apple-specific (Broadcom) devices */
  57         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  58
  59         /* MediaTek MT76x0E */
  60         { USB_DEVICE(0x0e8d, 0x763f) },
  61
  62         /* Broadcom SoftSailing reporting vendor specific */
  63         { USB_DEVICE(0x0a5c, 0x21e1) },
  64
  65         /* Apple MacBookPro 7,1 */
  66         { USB_DEVICE(0x05ac, 0x8213) },
  67
  68         /* Apple iMac11,1 */
  69         { USB_DEVICE(0x05ac, 0x8215) },
  70
  71         /* Apple MacBookPro6,2 */
  72         { USB_DEVICE(0x05ac, 0x8218) },
  73
  74         /* Apple MacBookAir3,1, MacBookAir3,2 */
  75         { USB_DEVICE(0x05ac, 0x821b) },
  76
  77         /* Apple MacBookAir4,1 */
  78         { USB_DEVICE(0x05ac, 0x821f) },
  79
  80         /* Apple MacBookPro8,2 */
  81         { USB_DEVICE(0x05ac, 0x821a) },
  82
  83         /* Apple MacMini5,1 */
  84         { USB_DEVICE(0x05ac, 0x8281) },
  85
  86         /* AVM BlueFRITZ! USB v2.0 */
  87         { USB_DEVICE(0x057c, 0x3800) },
  88
  89         /* Bluetooth Ultraport Module from IBM */
  90         { USB_DEVICE(0x04bf, 0x030a) },
  91
  92         /* ALPS Modules with non-standard id */
  93         { USB_DEVICE(0x044e, 0x3001) },
  94         { USB_DEVICE(0x044e, 0x3002) },
  95
  96         /* Ericsson with non-standard id */
  97         { USB_DEVICE(0x0bdb, 0x1002) },
  98
  99         /* Canyon CN-BTU1 with HID interfaces */
 100         { USB_DEVICE(0x0c10, 0x0000) },
 101
 102         /* Broadcom BCM20702A0 */
 103         { USB_DEVICE(0x0489, 0xe042) },
 104         { USB_DEVICE(0x04ca, 0x2003) },
 105         { USB_DEVICE(0x0b05, 0x17b5) },
 106         { USB_DEVICE(0x0b05, 0x17cb) },
 107         { USB_DEVICE(0x413c, 0x8197) },
 108
 109         /* Foxconn - Hon Hai */
 110         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 111
 112         /* Broadcom devices with vendor specific id */
 113         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 114           .driver_info = BTUSB_BCM_PATCHRAM },
 115
 116         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         /* IMC Networks - Broadcom based */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 121
 122         /* Intel Bluetooth USB Bootloader (RAM module) */
 123         { USB_DEVICE(0x8087, 0x0a5a),
 124           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 125
 126         { }     /* Terminating entry */
 127 };
 128
 129 MODULE_DEVICE_TABLE(usb, btusb_table);
 130
 131 static const struct usb_device_id blacklist_table[] = {
 132         /* CSR BlueCore devices */
 133         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 134
 135         /* Broadcom BCM2033 without firmware */
 136         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 137
 138         /* Atheros 3011 with sflash firmware */
 139         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 141         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 142         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 143         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 145
 146         /* Atheros AR9285 Malbec with sflash firmware */
 147         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 148
 149         /* Atheros 3012 with sflash firmware */
 150         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 180
 181         /* Atheros AR5BBU12 with sflash firmware */
 182         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 183
 184         /* Atheros AR5BBU12 with sflash firmware */
 185         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 187
 188         /* Broadcom BCM2035 */
 189         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 190         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 191         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* Broadcom BCM2045 */
 194         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 195         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* IBM/Lenovo ThinkPad with Broadcom chip */
 198         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 199         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* HP laptop with Broadcom chip */
 202         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Dell laptop with Broadcom chip */
 205         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* Dell Wireless 370 and 410 devices */
 208         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 209         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* Belkin F8T012 and F8T013 devices */
 212         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 213         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* Asus WL-BTD202 device */
 216         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Kensington Bluetooth USB adapter */
 219         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* RTX Telecom based adapters with buggy SCO support */
 222         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 223         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 224
 225         /* CONWISE Technology based adapters with buggy SCO support */
 226         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 227
 228         /* Digianswer devices */
 229         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 230         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 231
 232         /* CSR BlueCore Bluetooth Sniffer */
 233         { USB_DEVICE(0x0a12, 0x0002),
 234           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 235
 236         /* Frontline ComProbe Bluetooth Sniffer */
 237         { USB_DEVICE(0x16d3, 0x0002),
 238           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 239
 240         /* Intel Bluetooth device */
 241         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 242         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 243
 244         { }     /* Terminating entry */
 245 };
 246
 247 #define BTUSB_MAX_ISOC_FRAMES   10
 248
 249 #define BTUSB_INTR_RUNNING      0
 250 #define BTUSB_BULK_RUNNING      1
 251 #define BTUSB_ISOC_RUNNING      2
 252 #define BTUSB_SUSPENDING        3
 253 #define BTUSB_DID_ISO_RESUME    4
 254
 255 struct btusb_data {
 256         struct hci_dev       *hdev;
 257         struct usb_device    *udev;
 258         struct usb_interface *intf;
 259         struct usb_interface *isoc;
 260
 261         spinlock_t lock;
 262
 263         unsigned long flags;
 264
 265         struct work_struct work;
 266         struct work_struct waker;
 267
 268         struct usb_anchor tx_anchor;
 269         struct usb_anchor intr_anchor;
 270         struct usb_anchor bulk_anchor;
 271         struct usb_anchor isoc_anchor;
 272         struct usb_anchor deferred;
 273         int tx_in_flight;
 274         spinlock_t txlock;
 275
 276         struct usb_endpoint_descriptor *intr_ep;
 277         struct usb_endpoint_descriptor *bulk_tx_ep;
 278         struct usb_endpoint_descriptor *bulk_rx_ep;
 279         struct usb_endpoint_descriptor *isoc_tx_ep;
 280         struct usb_endpoint_descriptor *isoc_rx_ep;
 281
 282         __u8 cmdreq_type;
 283
 284         unsigned int sco_num;
 285         int isoc_altsetting;
 286         int suspend_count;
 287 };
 288
 289 static int inc_tx(struct btusb_data *data)
 290 {
 291         unsigned long flags;
 292         int rv;
 293
 294         spin_lock_irqsave(&data->txlock, flags);
 295         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 296         if (!rv)
 297                 data->tx_in_flight++;
 298         spin_unlock_irqrestore(&data->txlock, flags);
 299
 300         return rv;
 301 }
 302
 303 static void btusb_intr_complete(struct urb *urb)
 304 {
 305         struct hci_dev *hdev = urb->context;
 306         struct btusb_data *data = hci_get_drvdata(hdev);
 307         int err;
 308
 309         BT_DBG("%s urb %p status %d count %d", hdev->name,
 310                                         urb, urb->status, urb->actual_length);
 311
 312         if (!test_bit(HCI_RUNNING, &hdev->flags))
 313                 return;
 314
 315         if (urb->status == 0) {
 316                 hdev->stat.byte_rx += urb->actual_length;
 317
 318                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 319                                                 urb->transfer_buffer,
 320                                                 urb->actual_length) < 0) {
 321                         BT_ERR("%s corrupted event packet", hdev->name);
 322                         hdev->stat.err_rx++;
 323                 }
 324         }
 325
 326         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 327                 return;
 328
 329         usb_mark_last_busy(data->udev);
 330         usb_anchor_urb(urb, &data->intr_anchor);
 331
 332         err = usb_submit_urb(urb, GFP_ATOMIC);
 333         if (err < 0) {
 334                 /* -EPERM: urb is being killed;
 335                  * -ENODEV: device got disconnected */
 336                 if (err != -EPERM && err != -ENODEV)
 337                         BT_ERR("%s urb %p failed to resubmit (%d)",
 338                                                 hdev->name, urb, -err);
 339                 usb_unanchor_urb(urb);
 340         }
 341 }
 342
 343 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 344 {
 345         struct btusb_data *data = hci_get_drvdata(hdev);
 346         struct urb *urb;
 347         unsigned char *buf;
 348         unsigned int pipe;
 349         int err, size;
 350
 351         BT_DBG("%s", hdev->name);
 352
 353         if (!data->intr_ep)
 354                 return -ENODEV;
 355
 356         urb = usb_alloc_urb(0, mem_flags);
 357         if (!urb)
 358                 return -ENOMEM;
 359
 360         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 361
 362         buf = kmalloc(size, mem_flags);
 363         if (!buf) {
 364                 usb_free_urb(urb);
 365                 return -ENOMEM;
 366         }
 367
 368         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 369
 370         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 371                                                 btusb_intr_complete, hdev,
 372                                                 data->intr_ep->bInterval);
 373
 374         urb->transfer_flags |= URB_FREE_BUFFER;
 375
 376         usb_anchor_urb(urb, &data->intr_anchor);
 377
 378         err = usb_submit_urb(urb, mem_flags);
 379         if (err < 0) {
 380                 if (err != -EPERM && err != -ENODEV)
 381                         BT_ERR("%s urb %p submission failed (%d)",
 382                                                 hdev->name, urb, -err);
 383                 usb_unanchor_urb(urb);
 384         }
 385
 386         usb_free_urb(urb);
 387
 388         return err;
 389 }
 390
 391 static void btusb_bulk_complete(struct urb *urb)
 392 {
 393         struct hci_dev *hdev = urb->context;
 394         struct btusb_data *data = hci_get_drvdata(hdev);
 395         int err;
 396
 397         BT_DBG("%s urb %p status %d count %d", hdev->name,
 398                                         urb, urb->status, urb->actual_length);
 399
 400         if (!test_bit(HCI_RUNNING, &hdev->flags))
 401                 return;
 402
 403         if (urb->status == 0) {
 404                 hdev->stat.byte_rx += urb->actual_length;
 405
 406                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 407                                                 urb->transfer_buffer,
 408                                                 urb->actual_length) < 0) {
 409                         BT_ERR("%s corrupted ACL packet", hdev->name);
 410                         hdev->stat.err_rx++;
 411                 }
 412         }
 413
 414         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 415                 return;
 416
 417         usb_anchor_urb(urb, &data->bulk_anchor);
 418         usb_mark_last_busy(data->udev);
 419
 420         err = usb_submit_urb(urb, GFP_ATOMIC);
 421         if (err < 0) {
 422                 /* -EPERM: urb is being killed;
 423                  * -ENODEV: device got disconnected */
 424                 if (err != -EPERM && err != -ENODEV)
 425                         BT_ERR("%s urb %p failed to resubmit (%d)",
 426                                                 hdev->name, urb, -err);
 427                 usb_unanchor_urb(urb);
 428         }
 429 }
 430
 431 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 432 {
 433         struct btusb_data *data = hci_get_drvdata(hdev);
 434         struct urb *urb;
 435         unsigned char *buf;
 436         unsigned int pipe;
 437         int err, size = HCI_MAX_FRAME_SIZE;
 438
 439         BT_DBG("%s", hdev->name);
 440
 441         if (!data->bulk_rx_ep)
 442                 return -ENODEV;
 443
 444         urb = usb_alloc_urb(0, mem_flags);
 445         if (!urb)
 446                 return -ENOMEM;
 447
 448         buf = kmalloc(size, mem_flags);
 449         if (!buf) {
 450                 usb_free_urb(urb);
 451                 return -ENOMEM;
 452         }
 453
 454         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 455
 456         usb_fill_bulk_urb(urb, data->udev, pipe,
 457                                         buf, size, btusb_bulk_complete, hdev);
 458
 459         urb->transfer_flags |= URB_FREE_BUFFER;
 460
 461         usb_mark_last_busy(data->udev);
 462         usb_anchor_urb(urb, &data->bulk_anchor);
 463
 464         err = usb_submit_urb(urb, mem_flags);
 465         if (err < 0) {
 466                 if (err != -EPERM && err != -ENODEV)
 467                         BT_ERR("%s urb %p submission failed (%d)",
 468                                                 hdev->name, urb, -err);
 469                 usb_unanchor_urb(urb);
 470         }
 471
 472         usb_free_urb(urb);
 473
 474         return err;
 475 }
 476
 477 static void btusb_isoc_complete(struct urb *urb)
 478 {
 479         struct hci_dev *hdev = urb->context;
 480         struct btusb_data *data = hci_get_drvdata(hdev);
 481         int i, err;
 482
 483         BT_DBG("%s urb %p status %d count %d", hdev->name,
 484                                         urb, urb->status, urb->actual_length);
 485
 486         if (!test_bit(HCI_RUNNING, &hdev->flags))
 487                 return;
 488
 489         if (urb->status == 0) {
 490                 for (i = 0; i < urb->number_of_packets; i++) {
 491                         unsigned int offset = urb->iso_frame_desc[i].offset;
 492                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 493
 494                         if (urb->iso_frame_desc[i].status)
 495                                 continue;
 496
 497                         hdev->stat.byte_rx += length;
 498
 499                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 500                                                 urb->transfer_buffer + offset,
 501                                                                 length) < 0) {
 502                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 503                                 hdev->stat.err_rx++;
 504                         }
 505                 }
 506         }
 507
 508         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 509                 return;
 510
 511         usb_anchor_urb(urb, &data->isoc_anchor);
 512
 513         err = usb_submit_urb(urb, GFP_ATOMIC);
 514         if (err < 0) {
 515                 /* -EPERM: urb is being killed;
 516                  * -ENODEV: device got disconnected */
 517                 if (err != -EPERM && err != -ENODEV)
 518                         BT_ERR("%s urb %p failed to resubmit (%d)",
 519                                                 hdev->name, urb, -err);
 520                 usb_unanchor_urb(urb);
 521         }
 522 }
 523
 524 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 525 {
 526         int i, offset = 0;
 527
 528         BT_DBG("len %d mtu %d", len, mtu);
 529
 530         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 531                                         i++, offset += mtu, len -= mtu) {
 532                 urb->iso_frame_desc[i].offset = offset;
 533                 urb->iso_frame_desc[i].length = mtu;
 534         }
 535
 536         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 537                 urb->iso_frame_desc[i].offset = offset;
 538                 urb->iso_frame_desc[i].length = len;
 539                 i++;
 540         }
 541
 542         urb->number_of_packets = i;
 543 }
 544
 545 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 546 {
 547         struct btusb_data *data = hci_get_drvdata(hdev);
 548         struct urb *urb;
 549         unsigned char *buf;
 550         unsigned int pipe;
 551         int err, size;
 552
 553         BT_DBG("%s", hdev->name);
 554
 555         if (!data->isoc_rx_ep)
 556                 return -ENODEV;
 557
 558         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 559         if (!urb)
 560                 return -ENOMEM;
 561
 562         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 563                                                 BTUSB_MAX_ISOC_FRAMES;
 564
 565         buf = kmalloc(size, mem_flags);
 566         if (!buf) {
 567                 usb_free_urb(urb);
 568                 return -ENOMEM;
 569         }
 570
 571         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 572
 573         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 574                                 hdev, data->isoc_rx_ep->bInterval);
 575
 576         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 577
 578         __fill_isoc_descriptor(urb, size,
 579                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 580
 581         usb_anchor_urb(urb, &data->isoc_anchor);
 582
 583         err = usb_submit_urb(urb, mem_flags);
 584         if (err < 0) {
 585                 if (err != -EPERM && err != -ENODEV)
 586                         BT_ERR("%s urb %p submission failed (%d)",
 587                                                 hdev->name, urb, -err);
 588                 usb_unanchor_urb(urb);
 589         }
 590
 591         usb_free_urb(urb);
 592
 593         return err;
 594 }
 595
 596 static void btusb_tx_complete(struct urb *urb)
 597 {
 598         struct sk_buff *skb = urb->context;
 599         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 600         struct btusb_data *data = hci_get_drvdata(hdev);
 601
 602         BT_DBG("%s urb %p status %d count %d", hdev->name,
 603                                         urb, urb->status, urb->actual_length);
 604
 605         if (!test_bit(HCI_RUNNING, &hdev->flags))
 606                 goto done;
 607
 608         if (!urb->status)
 609                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 610         else
 611                 hdev->stat.err_tx++;
 612
 613 done:
 614         spin_lock(&data->txlock);
 615         data->tx_in_flight--;
 616         spin_unlock(&data->txlock);
 617
 618         kfree(urb->setup_packet);
 619
 620         kfree_skb(skb);
 621 }
 622
 623 static void btusb_isoc_tx_complete(struct urb *urb)
 624 {
 625         struct sk_buff *skb = urb->context;
 626         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 627
 628         BT_DBG("%s urb %p status %d count %d", hdev->name,
 629                                         urb, urb->status, urb->actual_length);
 630
 631         if (!test_bit(HCI_RUNNING, &hdev->flags))
 632                 goto done;
 633
 634         if (!urb->status)
 635                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 636         else
 637                 hdev->stat.err_tx++;
 638
 639 done:
 640         kfree(urb->setup_packet);
 641
 642         kfree_skb(skb);
 643 }
 644
 645 static int btusb_open(struct hci_dev *hdev)
 646 {
 647         struct btusb_data *data = hci_get_drvdata(hdev);
 648         int err;
 649
 650         BT_DBG("%s", hdev->name);
 651
 652         err = usb_autopm_get_interface(data->intf);
 653         if (err < 0)
 654                 return err;
 655
 656         data->intf->needs_remote_wakeup = 1;
 657
 658         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 659                 goto done;
 660
 661         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 662                 goto done;
 663
 664         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 665         if (err < 0)
 666                 goto failed;
 667
 668         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 669         if (err < 0) {
 670                 usb_kill_anchored_urbs(&data->intr_anchor);
 671                 goto failed;
 672         }
 673
 674         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 675         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 676
 677 done:
 678         usb_autopm_put_interface(data->intf);
 679         return 0;
 680
 681 failed:
 682         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 683         clear_bit(HCI_RUNNING, &hdev->flags);
 684         usb_autopm_put_interface(data->intf);
 685         return err;
 686 }
 687
 688 static void btusb_stop_traffic(struct btusb_data *data)
 689 {
 690         usb_kill_anchored_urbs(&data->intr_anchor);
 691         usb_kill_anchored_urbs(&data->bulk_anchor);
 692         usb_kill_anchored_urbs(&data->isoc_anchor);
 693 }
 694
 695 static int btusb_close(struct hci_dev *hdev)
 696 {
 697         struct btusb_data *data = hci_get_drvdata(hdev);
 698         int err;
 699
 700         BT_DBG("%s", hdev->name);
 701
 702         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 703                 return 0;
 704
 705         cancel_work_sync(&data->work);
 706         cancel_work_sync(&data->waker);
 707
 708         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 709         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 710         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 711
 712         btusb_stop_traffic(data);
 713         err = usb_autopm_get_interface(data->intf);
 714         if (err < 0)
 715                 goto failed;
 716
 717         data->intf->needs_remote_wakeup = 0;
 718         usb_autopm_put_interface(data->intf);
 719
 720 failed:
 721         usb_scuttle_anchored_urbs(&data->deferred);
 722         return 0;
 723 }
 724
 725 static int btusb_flush(struct hci_dev *hdev)
 726 {
 727         struct btusb_data *data = hci_get_drvdata(hdev);
 728
 729         BT_DBG("%s", hdev->name);
 730
 731         usb_kill_anchored_urbs(&data->tx_anchor);
 732
 733         return 0;
 734 }
 735
 736 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 737 {
 738         struct btusb_data *data = hci_get_drvdata(hdev);
 739         struct usb_ctrlrequest *dr;
 740         struct urb *urb;
 741         unsigned int pipe;
 742         int err;
 743
 744         BT_DBG("%s", hdev->name);
 745
 746         if (!test_bit(HCI_RUNNING, &hdev->flags))
 747                 return -EBUSY;
 748
 749         skb->dev = (void *) hdev;
 750
 751         switch (bt_cb(skb)->pkt_type) {
 752         case HCI_COMMAND_PKT:
 753                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 754                 if (!urb)
 755                         return -ENOMEM;
 756
 757                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 758                 if (!dr) {
 759                         usb_free_urb(urb);
 760                         return -ENOMEM;
 761                 }
 762
 763                 dr->bRequestType = data->cmdreq_type;
 764                 dr->bRequest     = 0;
 765                 dr->wIndex       = 0;
 766                 dr->wValue       = 0;
 767                 dr->wLength      = __cpu_to_le16(skb->len);
 768
 769                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 770
 771                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 772                                 skb->data, skb->len, btusb_tx_complete, skb);
 773
 774                 hdev->stat.cmd_tx++;
 775                 break;
 776
 777         case HCI_ACLDATA_PKT:
 778                 if (!data->bulk_tx_ep)
 779                         return -ENODEV;
 780
 781                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 782                 if (!urb)
 783                         return -ENOMEM;
 784
 785                 pipe = usb_sndbulkpipe(data->udev,
 786                                         data->bulk_tx_ep->bEndpointAddress);
 787
 788                 usb_fill_bulk_urb(urb, data->udev, pipe,
 789                                 skb->data, skb->len, btusb_tx_complete, skb);
 790
 791                 hdev->stat.acl_tx++;
 792                 break;
 793
 794         case HCI_SCODATA_PKT:
 795                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 796                         return -ENODEV;
 797
 798                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 799                 if (!urb)
 800                         return -ENOMEM;
 801
 802                 pipe = usb_sndisocpipe(data->udev,
 803                                         data->isoc_tx_ep->bEndpointAddress);
 804
 805                 usb_fill_int_urb(urb, data->udev, pipe,
 806                                 skb->data, skb->len, btusb_isoc_tx_complete,
 807                                 skb, data->isoc_tx_ep->bInterval);
 808
 809                 urb->transfer_flags  = URB_ISO_ASAP;
 810
 811                 __fill_isoc_descriptor(urb, skb->len,
 812                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 813
 814                 hdev->stat.sco_tx++;
 815                 goto skip_waking;
 816
 817         default:
 818                 return -EILSEQ;
 819         }
 820
 821         err = inc_tx(data);
 822         if (err) {
 823                 usb_anchor_urb(urb, &data->deferred);
 824                 schedule_work(&data->waker);
 825                 err = 0;
 826                 goto done;
 827         }
 828
 829 skip_waking:
 830         usb_anchor_urb(urb, &data->tx_anchor);
 831
 832         err = usb_submit_urb(urb, GFP_ATOMIC);
 833         if (err < 0) {
 834                 if (err != -EPERM && err != -ENODEV)
 835                         BT_ERR("%s urb %p submission failed (%d)",
 836                                                 hdev->name, urb, -err);
 837                 kfree(urb->setup_packet);
 838                 usb_unanchor_urb(urb);
 839         } else {
 840                 usb_mark_last_busy(data->udev);
 841         }
 842
 843 done:
 844         usb_free_urb(urb);
 845         return err;
 846 }
 847
 848 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 849 {
 850         struct btusb_data *data = hci_get_drvdata(hdev);
 851
 852         BT_DBG("%s evt %d", hdev->name, evt);
 853
 854         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 855                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 856                 schedule_work(&data->work);
 857         }
 858 }
 859
 860 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 861 {
 862         struct btusb_data *data = hci_get_drvdata(hdev);
 863         struct usb_interface *intf = data->isoc;
 864         struct usb_endpoint_descriptor *ep_desc;
 865         int i, err;
 866
 867         if (!data->isoc)
 868                 return -ENODEV;
 869
 870         err = usb_set_interface(data->udev, 1, altsetting);
 871         if (err < 0) {
 872                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 873                 return err;
 874         }
 875
 876         data->isoc_altsetting = altsetting;
 877
 878         data->isoc_tx_ep = NULL;
 879         data->isoc_rx_ep = NULL;
 880
 881         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 882                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 883
 884                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 885                         data->isoc_tx_ep = ep_desc;
 886                         continue;
 887                 }
 888
 889                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 890                         data->isoc_rx_ep = ep_desc;
 891                         continue;
 892                 }
 893         }
 894
 895         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 896                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 897                 return -ENODEV;
 898         }
 899
 900         return 0;
 901 }
 902
 903 static void btusb_work(struct work_struct *work)
 904 {
 905         struct btusb_data *data = container_of(work, struct btusb_data, work);
 906         struct hci_dev *hdev = data->hdev;
 907         int new_alts;
 908         int err;
 909
 910         if (data->sco_num > 0) {
 911                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 912                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 913                         if (err < 0) {
 914                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 915                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 916                                 return;
 917                         }
 918
 919                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 920                 }
 921
 922                 if (hdev->voice_setting & 0x0020) {
 923                         static const int alts[3] = { 2, 4, 5 };
 924                         new_alts = alts[data->sco_num - 1];
 925                 } else {
 926                         new_alts = data->sco_num;
 927                 }
 928
 929                 if (data->isoc_altsetting != new_alts) {
 930                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 931                         usb_kill_anchored_urbs(&data->isoc_anchor);
 932
 933                         if (__set_isoc_interface(hdev, new_alts) < 0)
 934                                 return;
 935                 }
 936
 937                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 938                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 939                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 940                         else
 941                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 942                 }
 943         } else {
 944                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 945                 usb_kill_anchored_urbs(&data->isoc_anchor);
 946
 947                 __set_isoc_interface(hdev, 0);
 948                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 949                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 950         }
 951 }
 952
 953 static void btusb_waker(struct work_struct *work)
 954 {
 955         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 956         int err;
 957
 958         err = usb_autopm_get_interface(data->intf);
 959         if (err < 0)
 960                 return;
 961
 962         usb_autopm_put_interface(data->intf);
 963 }
 964
 965 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 966 {
 967         struct sk_buff *skb;
 968         u8 val = 0x00;
 969
 970         BT_DBG("%s", hdev->name);
 971
 972         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 973         if (IS_ERR(skb))
 974                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 975         else
 976                 kfree_skb(skb);
 977
 978         return 0;
 979 }
 980
 981 static int btusb_setup_csr(struct hci_dev *hdev)
 982 {
 983         struct hci_rp_read_local_version *rp;
 984         struct sk_buff *skb;
 985         int ret;
 986
 987         BT_DBG("%s", hdev->name);
 988
 989         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 990                              HCI_INIT_TIMEOUT);
 991         if (IS_ERR(skb)) {
 992                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 993                 return -PTR_ERR(skb);
 994         }
 995
 996         rp = (struct hci_rp_read_local_version *) skb->data;
 997
 998         if (!rp->status) {
 999                 if (le16_to_cpu(rp->manufacturer) != 10) {
1000                         /* Clear the reset quirk since this is not an actual
1001                          * early Bluetooth 1.1 device from CSR.
1002                          */
1003                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1004
1005                         /* These fake CSR controllers have all a broken
1006                          * stored link key handling and so just disable it.
1007                          */
1008                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1009                                 &hdev->quirks);
1010                 }
1011         }
1012
1013         ret = -bt_to_errno(rp->status);
1014
1015         kfree_skb(skb);
1016
1017         return ret;
1018 }
1019
1020 struct intel_version {
1021         u8 status;
1022         u8 hw_platform;
1023         u8 hw_variant;
1024         u8 hw_revision;
1025         u8 fw_variant;
1026         u8 fw_revision;
1027         u8 fw_build_num;
1028         u8 fw_build_ww;
1029         u8 fw_build_yy;
1030         u8 fw_patch_num;
1031 } __packed;
1032
1033 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1034                                                 struct intel_version *ver)
1035 {
1036         const struct firmware *fw;
1037         char fwname[64];
1038         int ret;
1039
1040         snprintf(fwname, sizeof(fwname),
1041                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1042                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1043                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1044                  ver->fw_build_ww, ver->fw_build_yy);
1045
1046         ret = request_firmware(&fw, fwname, &hdev->dev);
1047         if (ret < 0) {
1048                 if (ret == -EINVAL) {
1049                         BT_ERR("%s Intel firmware file request failed (%d)",
1050                                hdev->name, ret);
1051                         return NULL;
1052                 }
1053
1054                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1055                        hdev->name, fwname, ret);
1056
1057                 /* If the correct firmware patch file is not found, use the
1058                  * default firmware patch file instead
1059                  */
1060                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1061                          ver->hw_platform, ver->hw_variant);
1062                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1063                         BT_ERR("%s failed to open default Intel fw file: %s",
1064                                hdev->name, fwname);
1065                         return NULL;
1066                 }
1067         }
1068
1069         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1070
1071         return fw;
1072 }
1073
1074 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1075                                       const struct firmware *fw,
1076                                       const u8 **fw_ptr, int *disable_patch)
1077 {
1078         struct sk_buff *skb;
1079         struct hci_command_hdr *cmd;
1080         const u8 *cmd_param;
1081         struct hci_event_hdr *evt = NULL;
1082         const u8 *evt_param = NULL;
1083         int remain = fw->size - (*fw_ptr - fw->data);
1084
1085         /* The first byte indicates the types of the patch command or event.
1086          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1087          * in the current firmware buffer doesn't start with 0x01 or
1088          * the size of remain buffer is smaller than HCI command header,
1089          * the firmware file is corrupted and it should stop the patching
1090          * process.
1091          */
1092         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1093                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1094                 return -EINVAL;
1095         }
1096         (*fw_ptr)++;
1097         remain--;
1098
1099         cmd = (struct hci_command_hdr *)(*fw_ptr);
1100         *fw_ptr += sizeof(*cmd);
1101         remain -= sizeof(*cmd);
1102
1103         /* Ensure that the remain firmware data is long enough than the length
1104          * of command parameter. If not, the firmware file is corrupted.
1105          */
1106         if (remain < cmd->plen) {
1107                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1108                 return -EFAULT;
1109         }
1110
1111         /* If there is a command that loads a patch in the firmware
1112          * file, then enable the patch upon success, otherwise just
1113          * disable the manufacturer mode, for example patch activation
1114          * is not required when the default firmware patch file is used
1115          * because there are no patch data to load.
1116          */
1117         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1118                 *disable_patch = 0;
1119
1120         cmd_param = *fw_ptr;
1121         *fw_ptr += cmd->plen;
1122         remain -= cmd->plen;
1123
1124         /* This reads the expected events when the above command is sent to the
1125          * device. Some vendor commands expects more than one events, for
1126          * example command status event followed by vendor specific event.
1127          * For this case, it only keeps the last expected event. so the command
1128          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1129          * last expected event.
1130          */
1131         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1132                 (*fw_ptr)++;
1133                 remain--;
1134
1135                 evt = (struct hci_event_hdr *)(*fw_ptr);
1136                 *fw_ptr += sizeof(*evt);
1137                 remain -= sizeof(*evt);
1138
1139                 if (remain < evt->plen) {
1140                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1141                                hdev->name);
1142                         return -EFAULT;
1143                 }
1144
1145                 evt_param = *fw_ptr;
1146                 *fw_ptr += evt->plen;
1147                 remain -= evt->plen;
1148         }
1149
1150         /* Every HCI commands in the firmware file has its correspond event.
1151          * If event is not found or remain is smaller than zero, the firmware
1152          * file is corrupted.
1153          */
1154         if (!evt || !evt_param || remain < 0) {
1155                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1156                 return -EFAULT;
1157         }
1158
1159         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1160                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1161         if (IS_ERR(skb)) {
1162                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1163                        hdev->name, cmd->opcode, PTR_ERR(skb));
1164                 return PTR_ERR(skb);
1165         }
1166
1167         /* It ensures that the returned event matches the event data read from
1168          * the firmware file. At fist, it checks the length and then
1169          * the contents of the event.
1170          */
1171         if (skb->len != evt->plen) {
1172                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1173                        le16_to_cpu(cmd->opcode));
1174                 kfree_skb(skb);
1175                 return -EFAULT;
1176         }
1177
1178         if (memcmp(skb->data, evt_param, evt->plen)) {
1179                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1180                        hdev->name, le16_to_cpu(cmd->opcode));
1181                 kfree_skb(skb);
1182                 return -EFAULT;
1183         }
1184         kfree_skb(skb);
1185
1186         return 0;
1187 }
1188
1189 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1190
1191 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1192 {
1193         struct sk_buff *skb;
1194         struct hci_rp_read_bd_addr *rp;
1195
1196         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1197                              HCI_INIT_TIMEOUT);
1198         if (IS_ERR(skb)) {
1199                 BT_ERR("%s reading Intel device address failed (%ld)",
1200                        hdev->name, PTR_ERR(skb));
1201                 return PTR_ERR(skb);
1202         }
1203
1204         if (skb->len != sizeof(*rp)) {
1205                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1206                 kfree_skb(skb);
1207                 return -EIO;
1208         }
1209
1210         rp = (struct hci_rp_read_bd_addr *) skb->data;
1211         if (rp->status) {
1212                 BT_ERR("%s Intel device address result failed (%02x)",
1213                        hdev->name, rp->status);
1214                 kfree_skb(skb);
1215                 return -bt_to_errno(rp->status);
1216         }
1217
1218         /* For some Intel based controllers, the default Bluetooth device
1219          * address 00:03:19:9E:8B:00 can be found. These controllers are
1220          * fully operational, but have the danger of duplicate addresses
1221          * and that in turn can cause problems with Bluetooth operation.
1222          */
1223         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1224                 BT_ERR("%s found Intel default device address (%pMR)",
1225                        hdev->name, &rp->bdaddr);
1226                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1227         }
1228
1229         kfree_skb(skb);
1230
1231         return 0;
1232 }
1233
1234 static int btusb_setup_intel(struct hci_dev *hdev)
1235 {
1236         struct sk_buff *skb;
1237         const struct firmware *fw;
1238         const u8 *fw_ptr;
1239         int disable_patch;
1240         struct intel_version *ver;
1241
1242         const u8 mfg_enable[] = { 0x01, 0x00 };
1243         const u8 mfg_disable[] = { 0x00, 0x00 };
1244         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1245         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1246
1247         BT_DBG("%s", hdev->name);
1248
1249         /* The controller has a bug with the first HCI command sent to it
1250          * returning number of completed commands as zero. This would stall the
1251          * command processing in the Bluetooth core.
1252          *
1253          * As a workaround, send HCI Reset command first which will reset the
1254          * number of completed commands and allow normal command processing
1255          * from now on.
1256          */
1257         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1258         if (IS_ERR(skb)) {
1259                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1260                        hdev->name, PTR_ERR(skb));
1261                 return PTR_ERR(skb);
1262         }
1263         kfree_skb(skb);
1264
1265         /* Read Intel specific controller version first to allow selection of
1266          * which firmware file to load.
1267          *
1268          * The returned information are hardware variant and revision plus
1269          * firmware variant, revision and build number.
1270          */
1271         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1272         if (IS_ERR(skb)) {
1273                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1274                        hdev->name, PTR_ERR(skb));
1275                 return PTR_ERR(skb);
1276         }
1277
1278         if (skb->len != sizeof(*ver)) {
1279                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1280                 kfree_skb(skb);
1281                 return -EIO;
1282         }
1283
1284         ver = (struct intel_version *)skb->data;
1285         if (ver->status) {
1286                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1287                        ver->status);
1288                 kfree_skb(skb);
1289                 return -bt_to_errno(ver->status);
1290         }
1291
1292         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1293                 hdev->name, ver->hw_platform, ver->hw_variant,
1294                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1295                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1296                 ver->fw_patch_num);
1297
1298         /* fw_patch_num indicates the version of patch the device currently
1299          * have. If there is no patch data in the device, it is always 0x00.
1300          * So, if it is other than 0x00, no need to patch the deivce again.
1301          */
1302         if (ver->fw_patch_num) {
1303                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1304                         hdev->name, ver->fw_patch_num);
1305                 kfree_skb(skb);
1306                 btusb_check_bdaddr_intel(hdev);
1307                 return 0;
1308         }
1309
1310         /* Opens the firmware patch file based on the firmware version read
1311          * from the controller. If it fails to open the matching firmware
1312          * patch file, it tries to open the default firmware patch file.
1313          * If no patch file is found, allow the device to operate without
1314          * a patch.
1315          */
1316         fw = btusb_setup_intel_get_fw(hdev, ver);
1317         if (!fw) {
1318                 kfree_skb(skb);
1319                 btusb_check_bdaddr_intel(hdev);
1320                 return 0;
1321         }
1322         fw_ptr = fw->data;
1323
1324         /* This Intel specific command enables the manufacturer mode of the
1325          * controller.
1326          *
1327          * Only while this mode is enabled, the driver can download the
1328          * firmware patch data and configuration parameters.
1329          */
1330         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1331         if (IS_ERR(skb)) {
1332                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1333                        hdev->name, PTR_ERR(skb));
1334                 release_firmware(fw);
1335                 return PTR_ERR(skb);
1336         }
1337
1338         if (skb->data[0]) {
1339                 u8 evt_status = skb->data[0];
1340                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1341                        hdev->name, evt_status);
1342                 kfree_skb(skb);
1343                 release_firmware(fw);
1344                 return -bt_to_errno(evt_status);
1345         }
1346         kfree_skb(skb);
1347
1348         disable_patch = 1;
1349
1350         /* The firmware data file consists of list of Intel specific HCI
1351          * commands and its expected events. The first byte indicates the
1352          * type of the message, either HCI command or HCI event.
1353          *
1354          * It reads the command and its expected event from the firmware file,
1355          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1356          * the returned event is compared with the event read from the firmware
1357          * file and it will continue until all the messages are downloaded to
1358          * the controller.
1359          *
1360          * Once the firmware patching is completed successfully,
1361          * the manufacturer mode is disabled with reset and activating the
1362          * downloaded patch.
1363          *
1364          * If the firmware patching fails, the manufacturer mode is
1365          * disabled with reset and deactivating the patch.
1366          *
1367          * If the default patch file is used, no reset is done when disabling
1368          * the manufacturer.
1369          */
1370         while (fw->size > fw_ptr - fw->data) {
1371                 int ret;
1372
1373                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1374                                                  &disable_patch);
1375                 if (ret < 0)
1376                         goto exit_mfg_deactivate;
1377         }
1378
1379         release_firmware(fw);
1380
1381         if (disable_patch)
1382                 goto exit_mfg_disable;
1383
1384         /* Patching completed successfully and disable the manufacturer mode
1385          * with reset and activate the downloaded firmware patches.
1386          */
1387         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1388                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1389         if (IS_ERR(skb)) {
1390                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1391                        hdev->name, PTR_ERR(skb));
1392                 return PTR_ERR(skb);
1393         }
1394         kfree_skb(skb);
1395
1396         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1397                 hdev->name);
1398
1399         btusb_check_bdaddr_intel(hdev);
1400         return 0;
1401
1402 exit_mfg_disable:
1403         /* Disable the manufacturer mode without reset */
1404         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1405                              HCI_INIT_TIMEOUT);
1406         if (IS_ERR(skb)) {
1407                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1408                        hdev->name, PTR_ERR(skb));
1409                 return PTR_ERR(skb);
1410         }
1411         kfree_skb(skb);
1412
1413         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1414
1415         btusb_check_bdaddr_intel(hdev);
1416         return 0;
1417
1418 exit_mfg_deactivate:
1419         release_firmware(fw);
1420
1421         /* Patching failed. Disable the manufacturer mode with reset and
1422          * deactivate the downloaded firmware patches.
1423          */
1424         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1425                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1426         if (IS_ERR(skb)) {
1427                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1428                        hdev->name, PTR_ERR(skb));
1429                 return PTR_ERR(skb);
1430         }
1431         kfree_skb(skb);
1432
1433         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1434                 hdev->name);
1435
1436         btusb_check_bdaddr_intel(hdev);
1437         return 0;
1438 }
1439
1440 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1441 {
1442         struct sk_buff *skb;
1443         long ret;
1444
1445         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1446         if (IS_ERR(skb)) {
1447                 ret = PTR_ERR(skb);
1448                 BT_ERR("%s: changing Intel device address failed (%ld)",
1449                         hdev->name, ret);
1450                 return ret;
1451         }
1452         kfree_skb(skb);
1453
1454         return 0;
1455 }
1456
1457 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1458
1459 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1460 {
1461         struct btusb_data *data = hci_get_drvdata(hdev);
1462         struct usb_device *udev = data->udev;
1463         char fw_name[64];
1464         const struct firmware *fw;
1465         const u8 *fw_ptr;
1466         size_t fw_size;
1467         const struct hci_command_hdr *cmd;
1468         const u8 *cmd_param;
1469         u16 opcode;
1470         struct sk_buff *skb;
1471         struct hci_rp_read_local_version *ver;
1472         struct hci_rp_read_bd_addr *bda;
1473         long ret;
1474
1475         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1476                  udev->product ? udev->product : "BCM",
1477                  le16_to_cpu(udev->descriptor.idVendor),
1478                  le16_to_cpu(udev->descriptor.idProduct));
1479
1480         ret = request_firmware(&fw, fw_name, &hdev->dev);
1481         if (ret < 0) {
1482                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1483                 return 0;
1484         }
1485
1486         /* Reset */
1487         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1488         if (IS_ERR(skb)) {
1489                 ret = PTR_ERR(skb);
1490                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1491                 goto done;
1492         }
1493         kfree_skb(skb);
1494
1495         /* Read Local Version Info */
1496         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1497                              HCI_INIT_TIMEOUT);
1498         if (IS_ERR(skb)) {
1499                 ret = PTR_ERR(skb);
1500                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1501                         hdev->name, ret);
1502                 goto done;
1503         }
1504
1505         if (skb->len != sizeof(*ver)) {
1506                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1507                         hdev->name);
1508                 kfree_skb(skb);
1509                 ret = -EIO;
1510                 goto done;
1511         }
1512
1513         ver = (struct hci_rp_read_local_version *) skb->data;
1514         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1515                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1516                 ver->lmp_ver, ver->lmp_subver);
1517         kfree_skb(skb);
1518
1519         /* Start Download */
1520         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1521         if (IS_ERR(skb)) {
1522                 ret = PTR_ERR(skb);
1523                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1524                         hdev->name, ret);
1525                 goto reset_fw;
1526         }
1527         kfree_skb(skb);
1528
1529         /* 50 msec delay after Download Minidrv completes */
1530         msleep(50);
1531
1532         fw_ptr = fw->data;
1533         fw_size = fw->size;
1534
1535         while (fw_size >= sizeof(*cmd)) {
1536                 cmd = (struct hci_command_hdr *) fw_ptr;
1537                 fw_ptr += sizeof(*cmd);
1538                 fw_size -= sizeof(*cmd);
1539
1540                 if (fw_size < cmd->plen) {
1541                         BT_ERR("%s: BCM: patch %s is corrupted",
1542                                 hdev->name, fw_name);
1543                         ret = -EINVAL;
1544                         goto reset_fw;
1545                 }
1546
1547                 cmd_param = fw_ptr;
1548                 fw_ptr += cmd->plen;
1549                 fw_size -= cmd->plen;
1550
1551                 opcode = le16_to_cpu(cmd->opcode);
1552
1553                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1554                                      HCI_INIT_TIMEOUT);
1555                 if (IS_ERR(skb)) {
1556                         ret = PTR_ERR(skb);
1557                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1558                                 hdev->name, opcode, ret);
1559                         goto reset_fw;
1560                 }
1561                 kfree_skb(skb);
1562         }
1563
1564         /* 250 msec delay after Launch Ram completes */
1565         msleep(250);
1566
1567 reset_fw:
1568         /* Reset */
1569         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1570         if (IS_ERR(skb)) {
1571                 ret = PTR_ERR(skb);
1572                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1573                 goto done;
1574         }
1575         kfree_skb(skb);
1576
1577         /* Read Local Version Info */
1578         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1579                              HCI_INIT_TIMEOUT);
1580         if (IS_ERR(skb)) {
1581                 ret = PTR_ERR(skb);
1582                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1583                         hdev->name, ret);
1584                 goto done;
1585         }
1586
1587         if (skb->len != sizeof(*ver)) {
1588                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1589                         hdev->name);
1590                 kfree_skb(skb);
1591                 ret = -EIO;
1592                 goto done;
1593         }
1594
1595         ver = (struct hci_rp_read_local_version *) skb->data;
1596         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1597                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1598                 ver->lmp_ver, ver->lmp_subver);
1599         kfree_skb(skb);
1600
1601         /* Read BD Address */
1602         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1603                              HCI_INIT_TIMEOUT);
1604         if (IS_ERR(skb)) {
1605                 ret = PTR_ERR(skb);
1606                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1607                         hdev->name, ret);
1608                 goto done;
1609         }
1610
1611         if (skb->len != sizeof(*bda)) {
1612                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1613                         hdev->name);
1614                 kfree_skb(skb);
1615                 ret = -EIO;
1616                 goto done;
1617         }
1618
1619         bda = (struct hci_rp_read_bd_addr *) skb->data;
1620         if (bda->status) {
1621                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1622                        hdev->name, bda->status);
1623                 kfree_skb(skb);
1624                 ret = -bt_to_errno(bda->status);
1625                 goto done;
1626         }
1627
1628         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1629          * with no configured address.
1630          */
1631         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1632                 BT_INFO("%s: BCM: using default device address (%pMR)",
1633                         hdev->name, &bda->bdaddr);
1634                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1635         }
1636
1637         kfree_skb(skb);
1638
1639 done:
1640         release_firmware(fw);
1641
1642         return ret;
1643 }
1644
1645 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1646 {
1647         struct sk_buff *skb;
1648         long ret;
1649
1650         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1651         if (IS_ERR(skb)) {
1652                 ret = PTR_ERR(skb);
1653                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1654                         hdev->name, ret);
1655                 return ret;
1656         }
1657         kfree_skb(skb);
1658
1659         return 0;
1660 }
1661
1662 static int btusb_probe(struct usb_interface *intf,
1663                                 const struct usb_device_id *id)
1664 {
1665         struct usb_endpoint_descriptor *ep_desc;
1666         struct btusb_data *data;
1667         struct hci_dev *hdev;
1668         int i, err;
1669
1670         BT_DBG("intf %p id %p", intf, id);
1671
1672         /* interface numbers are hardcoded in the spec */
1673         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1674                 return -ENODEV;
1675
1676         if (!id->driver_info) {
1677                 const struct usb_device_id *match;
1678                 match = usb_match_id(intf, blacklist_table);
1679                 if (match)
1680                         id = match;
1681         }
1682
1683         if (id->driver_info == BTUSB_IGNORE)
1684                 return -ENODEV;
1685
1686         if (id->driver_info & BTUSB_ATH3012) {
1687                 struct usb_device *udev = interface_to_usbdev(intf);
1688
1689                 /* Old firmware would otherwise let ath3k driver load
1690                  * patch and sysconfig files */
1691                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1692                         return -ENODEV;
1693         }
1694
1695         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1696         if (!data)
1697                 return -ENOMEM;
1698
1699         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1700                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1701
1702                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1703                         data->intr_ep = ep_desc;
1704                         continue;
1705                 }
1706
1707                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1708                         data->bulk_tx_ep = ep_desc;
1709                         continue;
1710                 }
1711
1712                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1713                         data->bulk_rx_ep = ep_desc;
1714                         continue;
1715                 }
1716         }
1717
1718         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1719                 return -ENODEV;
1720
1721         data->cmdreq_type = USB_TYPE_CLASS;
1722
1723         data->udev = interface_to_usbdev(intf);
1724         data->intf = intf;
1725
1726         spin_lock_init(&data->lock);
1727
1728         INIT_WORK(&data->work, btusb_work);
1729         INIT_WORK(&data->waker, btusb_waker);
1730         spin_lock_init(&data->txlock);
1731
1732         init_usb_anchor(&data->tx_anchor);
1733         init_usb_anchor(&data->intr_anchor);
1734         init_usb_anchor(&data->bulk_anchor);
1735         init_usb_anchor(&data->isoc_anchor);
1736         init_usb_anchor(&data->deferred);
1737
1738         hdev = hci_alloc_dev();
1739         if (!hdev)
1740                 return -ENOMEM;
1741
1742         hdev->bus = HCI_USB;
1743         hci_set_drvdata(hdev, data);
1744
1745         data->hdev = hdev;
1746
1747         SET_HCIDEV_DEV(hdev, &intf->dev);
1748
1749         hdev->open   = btusb_open;
1750         hdev->close  = btusb_close;
1751         hdev->flush  = btusb_flush;
1752         hdev->send   = btusb_send_frame;
1753         hdev->notify = btusb_notify;
1754
1755         if (id->driver_info & BTUSB_BCM92035)
1756                 hdev->setup = btusb_setup_bcm92035;
1757
1758         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1759                 hdev->setup = btusb_setup_bcm_patchram;
1760                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1761         }
1762
1763         if (id->driver_info & BTUSB_INTEL) {
1764                 hdev->setup = btusb_setup_intel;
1765                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1766         }
1767
1768         if (id->driver_info & BTUSB_INTEL_BOOT)
1769                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1770
1771         /* Interface numbers are hardcoded in the specification */
1772         data->isoc = usb_ifnum_to_if(data->udev, 1);
1773
1774         if (!reset)
1775                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1776
1777         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1778                 if (!disable_scofix)
1779                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1780         }
1781
1782         if (id->driver_info & BTUSB_BROKEN_ISOC)
1783                 data->isoc = NULL;
1784
1785         if (id->driver_info & BTUSB_DIGIANSWER) {
1786                 data->cmdreq_type = USB_TYPE_VENDOR;
1787                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1788         }
1789
1790         if (id->driver_info & BTUSB_CSR) {
1791                 struct usb_device *udev = data->udev;
1792                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1793
1794                 /* Old firmware would otherwise execute USB reset */
1795                 if (bcdDevice < 0x117)
1796                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1797
1798                 /* Fake CSR devices with broken commands */
1799                 if (bcdDevice <= 0x100)
1800                         hdev->setup = btusb_setup_csr;
1801         }
1802
1803         if (id->driver_info & BTUSB_SNIFFER) {
1804                 struct usb_device *udev = data->udev;
1805
1806                 /* New sniffer firmware has crippled HCI interface */
1807                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1808                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1809         }
1810
1811         if (id->driver_info & BTUSB_INTEL_BOOT) {
1812                 /* A bug in the bootloader causes that interrupt interface is
1813                  * only enabled after receiving SetInterface(0, AltSetting=0).
1814                  */
1815                 err = usb_set_interface(data->udev, 0, 0);
1816                 if (err < 0) {
1817                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1818                         hci_free_dev(hdev);
1819                         return err;
1820                 }
1821         }
1822
1823         if (data->isoc) {
1824                 err = usb_driver_claim_interface(&btusb_driver,
1825                                                         data->isoc, data);
1826                 if (err < 0) {
1827                         hci_free_dev(hdev);
1828                         return err;
1829                 }
1830         }
1831
1832         err = hci_register_dev(hdev);
1833         if (err < 0) {
1834                 hci_free_dev(hdev);
1835                 return err;
1836         }
1837
1838         usb_set_intfdata(intf, data);
1839
1840         return 0;
1841 }
1842
1843 static void btusb_disconnect(struct usb_interface *intf)
1844 {
1845         struct btusb_data *data = usb_get_intfdata(intf);
1846         struct hci_dev *hdev;
1847
1848         BT_DBG("intf %p", intf);
1849
1850         if (!data)
1851                 return;
1852
1853         hdev = data->hdev;
1854         usb_set_intfdata(data->intf, NULL);
1855
1856         if (data->isoc)
1857                 usb_set_intfdata(data->isoc, NULL);
1858
1859         hci_unregister_dev(hdev);
1860
1861         if (intf == data->isoc)
1862                 usb_driver_release_interface(&btusb_driver, data->intf);
1863         else if (data->isoc)
1864                 usb_driver_release_interface(&btusb_driver, data->isoc);
1865
1866         hci_free_dev(hdev);
1867 }
1868
1869 #ifdef CONFIG_PM
1870 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1871 {
1872         struct btusb_data *data = usb_get_intfdata(intf);
1873
1874         BT_DBG("intf %p", intf);
1875
1876         if (data->suspend_count++)
1877                 return 0;
1878
1879         spin_lock_irq(&data->txlock);
1880         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1881                 set_bit(BTUSB_SUSPENDING, &data->flags);
1882                 spin_unlock_irq(&data->txlock);
1883         } else {
1884                 spin_unlock_irq(&data->txlock);
1885                 data->suspend_count--;
1886                 return -EBUSY;
1887         }
1888
1889         cancel_work_sync(&data->work);
1890
1891         btusb_stop_traffic(data);
1892         usb_kill_anchored_urbs(&data->tx_anchor);
1893
1894         return 0;
1895 }
1896
1897 static void play_deferred(struct btusb_data *data)
1898 {
1899         struct urb *urb;
1900         int err;
1901
1902         while ((urb = usb_get_from_anchor(&data->deferred))) {
1903                 err = usb_submit_urb(urb, GFP_ATOMIC);
1904                 if (err < 0)
1905                         break;
1906
1907                 data->tx_in_flight++;
1908         }
1909         usb_scuttle_anchored_urbs(&data->deferred);
1910 }
1911
1912 static int btusb_resume(struct usb_interface *intf)
1913 {
1914         struct btusb_data *data = usb_get_intfdata(intf);
1915         struct hci_dev *hdev = data->hdev;
1916         int err = 0;
1917
1918         BT_DBG("intf %p", intf);
1919
1920         if (--data->suspend_count)
1921                 return 0;
1922
1923         if (!test_bit(HCI_RUNNING, &hdev->flags))
1924                 goto done;
1925
1926         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1927                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1928                 if (err < 0) {
1929                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1930                         goto failed;
1931                 }
1932         }
1933
1934         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1935                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1936                 if (err < 0) {
1937                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1938                         goto failed;
1939                 }
1940
1941                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1942         }
1943
1944         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1945                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1946                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1947                 else
1948                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1949         }
1950
1951         spin_lock_irq(&data->txlock);
1952         play_deferred(data);
1953         clear_bit(BTUSB_SUSPENDING, &data->flags);
1954         spin_unlock_irq(&data->txlock);
1955         schedule_work(&data->work);
1956
1957         return 0;
1958
1959 failed:
1960         usb_scuttle_anchored_urbs(&data->deferred);
1961 done:
1962         spin_lock_irq(&data->txlock);
1963         clear_bit(BTUSB_SUSPENDING, &data->flags);
1964         spin_unlock_irq(&data->txlock);
1965
1966         return err;
1967 }
1968 #endif
1969
1970 static struct usb_driver btusb_driver = {
1971         .name           = "btusb",
1972         .probe          = btusb_probe,
1973         .disconnect     = btusb_disconnect,
1974 #ifdef CONFIG_PM
1975         .suspend        = btusb_suspend,
1976         .resume         = btusb_resume,
1977 #endif
1978         .id_table       = btusb_table,
1979         .supports_autosuspend = 1,
1980         .disable_hub_initiated_lpm = 1,
1981 };
1982
1983 module_usb_driver(btusb_driver);
1984
1985 module_param(disable_scofix, bool, 0644);
1986 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1987
1988 module_param(force_scofix, bool, 0644);
1989 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1990
1991 module_param(reset, bool, 0644);
1992 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1993
1994 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1995 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1996 MODULE_VERSION(VERSION);
1997 MODULE_LICENSE("GPL");