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 #define BTUSB_MARVELL           0x800
  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(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 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           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* ASUSTek Computer - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 119
 120         /* Belkin F8065bf - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 122
 123         /* IMC Networks - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 125
 126         /* Intel Bluetooth USB Bootloader (RAM module) */
 127         { USB_DEVICE(0x8087, 0x0a5a),
 128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, btusb_table);
 134
 135 static const struct usb_device_id blacklist_table[] = {
 136         /* CSR BlueCore devices */
 137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 138
 139         /* Broadcom BCM2033 without firmware */
 140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3011 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros AR9285 Malbec with sflash firmware */
 151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros 3012 with sflash firmware */
 154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 186
 187         /* Atheros AR5BBU12 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR5BBU12 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 193
 194         /* Broadcom BCM2035 */
 195         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 196         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Broadcom BCM2045 */
 200         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 201         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* IBM/Lenovo ThinkPad with Broadcom chip */
 204         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* HP laptop with Broadcom chip */
 208         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Dell laptop with Broadcom chip */
 211         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Dell Wireless 370 and 410 devices */
 214         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 215         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Belkin F8T012 and F8T013 devices */
 218         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Asus WL-BTD202 device */
 222         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Kensington Bluetooth USB adapter */
 225         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* RTX Telecom based adapters with buggy SCO support */
 228         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 229         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 230
 231         /* CONWISE Technology based adapters with buggy SCO support */
 232         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 233
 234         /* Digianswer devices */
 235         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 236         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 237
 238         /* CSR BlueCore Bluetooth Sniffer */
 239         { USB_DEVICE(0x0a12, 0x0002),
 240           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 241
 242         /* Frontline ComProbe Bluetooth Sniffer */
 243         { USB_DEVICE(0x16d3, 0x0002),
 244           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 245
 246         /* Intel Bluetooth device */
 247         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 248         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 249
 250         /* Marvell device */
 251         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 252         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 253
 254         { }     /* Terminating entry */
 255 };
 256
 257 #define BTUSB_MAX_ISOC_FRAMES   10
 258
 259 #define BTUSB_INTR_RUNNING      0
 260 #define BTUSB_BULK_RUNNING      1
 261 #define BTUSB_ISOC_RUNNING      2
 262 #define BTUSB_SUSPENDING        3
 263 #define BTUSB_DID_ISO_RESUME    4
 264
 265 struct btusb_data {
 266         struct hci_dev       *hdev;
 267         struct usb_device    *udev;
 268         struct usb_interface *intf;
 269         struct usb_interface *isoc;
 270
 271         spinlock_t lock;
 272
 273         unsigned long flags;
 274
 275         struct work_struct work;
 276         struct work_struct waker;
 277
 278         struct usb_anchor tx_anchor;
 279         struct usb_anchor intr_anchor;
 280         struct usb_anchor bulk_anchor;
 281         struct usb_anchor isoc_anchor;
 282         struct usb_anchor deferred;
 283         int tx_in_flight;
 284         spinlock_t txlock;
 285
 286         struct usb_endpoint_descriptor *intr_ep;
 287         struct usb_endpoint_descriptor *bulk_tx_ep;
 288         struct usb_endpoint_descriptor *bulk_rx_ep;
 289         struct usb_endpoint_descriptor *isoc_tx_ep;
 290         struct usb_endpoint_descriptor *isoc_rx_ep;
 291
 292         __u8 cmdreq_type;
 293
 294         unsigned int sco_num;
 295         int isoc_altsetting;
 296         int suspend_count;
 297 };
 298
 299 static void btusb_intr_complete(struct urb *urb)
 300 {
 301         struct hci_dev *hdev = urb->context;
 302         struct btusb_data *data = hci_get_drvdata(hdev);
 303         int err;
 304
 305         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 306                urb->actual_length);
 307
 308         if (!test_bit(HCI_RUNNING, &hdev->flags))
 309                 return;
 310
 311         if (urb->status == 0) {
 312                 hdev->stat.byte_rx += urb->actual_length;
 313
 314                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 315                                       urb->transfer_buffer,
 316                                       urb->actual_length) < 0) {
 317                         BT_ERR("%s corrupted event packet", hdev->name);
 318                         hdev->stat.err_rx++;
 319                 }
 320         } else if (urb->status == -ENOENT) {
 321                 /* Avoid suspend failed when usb_kill_urb */
 322                 return;
 323         }
 324
 325         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 326                 return;
 327
 328         usb_mark_last_busy(data->udev);
 329         usb_anchor_urb(urb, &data->intr_anchor);
 330
 331         err = usb_submit_urb(urb, GFP_ATOMIC);
 332         if (err < 0) {
 333                 /* -EPERM: urb is being killed;
 334                  * -ENODEV: device got disconnected */
 335                 if (err != -EPERM && err != -ENODEV)
 336                         BT_ERR("%s urb %p failed to resubmit (%d)",
 337                                hdev->name, urb, -err);
 338                 usb_unanchor_urb(urb);
 339         }
 340 }
 341
 342 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 343 {
 344         struct btusb_data *data = hci_get_drvdata(hdev);
 345         struct urb *urb;
 346         unsigned char *buf;
 347         unsigned int pipe;
 348         int err, size;
 349
 350         BT_DBG("%s", hdev->name);
 351
 352         if (!data->intr_ep)
 353                 return -ENODEV;
 354
 355         urb = usb_alloc_urb(0, mem_flags);
 356         if (!urb)
 357                 return -ENOMEM;
 358
 359         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 360
 361         buf = kmalloc(size, mem_flags);
 362         if (!buf) {
 363                 usb_free_urb(urb);
 364                 return -ENOMEM;
 365         }
 366
 367         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 368
 369         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 370                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 371
 372         urb->transfer_flags |= URB_FREE_BUFFER;
 373
 374         usb_anchor_urb(urb, &data->intr_anchor);
 375
 376         err = usb_submit_urb(urb, mem_flags);
 377         if (err < 0) {
 378                 if (err != -EPERM && err != -ENODEV)
 379                         BT_ERR("%s urb %p submission failed (%d)",
 380                                hdev->name, urb, -err);
 381                 usb_unanchor_urb(urb);
 382         }
 383
 384         usb_free_urb(urb);
 385
 386         return err;
 387 }
 388
 389 static void btusb_bulk_complete(struct urb *urb)
 390 {
 391         struct hci_dev *hdev = urb->context;
 392         struct btusb_data *data = hci_get_drvdata(hdev);
 393         int err;
 394
 395         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 396                urb->actual_length);
 397
 398         if (!test_bit(HCI_RUNNING, &hdev->flags))
 399                 return;
 400
 401         if (urb->status == 0) {
 402                 hdev->stat.byte_rx += urb->actual_length;
 403
 404                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 405                                       urb->transfer_buffer,
 406                                       urb->actual_length) < 0) {
 407                         BT_ERR("%s corrupted ACL packet", hdev->name);
 408                         hdev->stat.err_rx++;
 409                 }
 410         } else if (urb->status == -ENOENT) {
 411                 /* Avoid suspend failed when usb_kill_urb */
 412                 return;
 413         }
 414
 415         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 416                 return;
 417
 418         usb_anchor_urb(urb, &data->bulk_anchor);
 419         usb_mark_last_busy(data->udev);
 420
 421         err = usb_submit_urb(urb, GFP_ATOMIC);
 422         if (err < 0) {
 423                 /* -EPERM: urb is being killed;
 424                  * -ENODEV: device got disconnected */
 425                 if (err != -EPERM && err != -ENODEV)
 426                         BT_ERR("%s urb %p failed to resubmit (%d)",
 427                                hdev->name, urb, -err);
 428                 usb_unanchor_urb(urb);
 429         }
 430 }
 431
 432 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 433 {
 434         struct btusb_data *data = hci_get_drvdata(hdev);
 435         struct urb *urb;
 436         unsigned char *buf;
 437         unsigned int pipe;
 438         int err, size = HCI_MAX_FRAME_SIZE;
 439
 440         BT_DBG("%s", hdev->name);
 441
 442         if (!data->bulk_rx_ep)
 443                 return -ENODEV;
 444
 445         urb = usb_alloc_urb(0, mem_flags);
 446         if (!urb)
 447                 return -ENOMEM;
 448
 449         buf = kmalloc(size, mem_flags);
 450         if (!buf) {
 451                 usb_free_urb(urb);
 452                 return -ENOMEM;
 453         }
 454
 455         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 456
 457         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 458                           btusb_bulk_complete, hdev);
 459
 460         urb->transfer_flags |= URB_FREE_BUFFER;
 461
 462         usb_mark_last_busy(data->udev);
 463         usb_anchor_urb(urb, &data->bulk_anchor);
 464
 465         err = usb_submit_urb(urb, mem_flags);
 466         if (err < 0) {
 467                 if (err != -EPERM && err != -ENODEV)
 468                         BT_ERR("%s urb %p submission failed (%d)",
 469                                hdev->name, urb, -err);
 470                 usb_unanchor_urb(urb);
 471         }
 472
 473         usb_free_urb(urb);
 474
 475         return err;
 476 }
 477
 478 static void btusb_isoc_complete(struct urb *urb)
 479 {
 480         struct hci_dev *hdev = urb->context;
 481         struct btusb_data *data = hci_get_drvdata(hdev);
 482         int i, err;
 483
 484         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 485                urb->actual_length);
 486
 487         if (!test_bit(HCI_RUNNING, &hdev->flags))
 488                 return;
 489
 490         if (urb->status == 0) {
 491                 for (i = 0; i < urb->number_of_packets; i++) {
 492                         unsigned int offset = urb->iso_frame_desc[i].offset;
 493                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 494
 495                         if (urb->iso_frame_desc[i].status)
 496                                 continue;
 497
 498                         hdev->stat.byte_rx += length;
 499
 500                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 501                                               urb->transfer_buffer + offset,
 502                                               length) < 0) {
 503                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 504                                 hdev->stat.err_rx++;
 505                         }
 506                 }
 507         } else if (urb->status == -ENOENT) {
 508                 /* Avoid suspend failed when usb_kill_urb */
 509                 return;
 510         }
 511
 512         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 513                 return;
 514
 515         usb_anchor_urb(urb, &data->isoc_anchor);
 516
 517         err = usb_submit_urb(urb, GFP_ATOMIC);
 518         if (err < 0) {
 519                 /* -EPERM: urb is being killed;
 520                  * -ENODEV: device got disconnected */
 521                 if (err != -EPERM && err != -ENODEV)
 522                         BT_ERR("%s urb %p failed to resubmit (%d)",
 523                                hdev->name, urb, -err);
 524                 usb_unanchor_urb(urb);
 525         }
 526 }
 527
 528 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 529 {
 530         int i, offset = 0;
 531
 532         BT_DBG("len %d mtu %d", len, mtu);
 533
 534         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 535                                         i++, offset += mtu, len -= mtu) {
 536                 urb->iso_frame_desc[i].offset = offset;
 537                 urb->iso_frame_desc[i].length = mtu;
 538         }
 539
 540         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 541                 urb->iso_frame_desc[i].offset = offset;
 542                 urb->iso_frame_desc[i].length = len;
 543                 i++;
 544         }
 545
 546         urb->number_of_packets = i;
 547 }
 548
 549 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 550 {
 551         struct btusb_data *data = hci_get_drvdata(hdev);
 552         struct urb *urb;
 553         unsigned char *buf;
 554         unsigned int pipe;
 555         int err, size;
 556
 557         BT_DBG("%s", hdev->name);
 558
 559         if (!data->isoc_rx_ep)
 560                 return -ENODEV;
 561
 562         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 563         if (!urb)
 564                 return -ENOMEM;
 565
 566         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 567                                                 BTUSB_MAX_ISOC_FRAMES;
 568
 569         buf = kmalloc(size, mem_flags);
 570         if (!buf) {
 571                 usb_free_urb(urb);
 572                 return -ENOMEM;
 573         }
 574
 575         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 576
 577         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 578                          hdev, data->isoc_rx_ep->bInterval);
 579
 580         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 581
 582         __fill_isoc_descriptor(urb, size,
 583                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 584
 585         usb_anchor_urb(urb, &data->isoc_anchor);
 586
 587         err = usb_submit_urb(urb, mem_flags);
 588         if (err < 0) {
 589                 if (err != -EPERM && err != -ENODEV)
 590                         BT_ERR("%s urb %p submission failed (%d)",
 591                                hdev->name, urb, -err);
 592                 usb_unanchor_urb(urb);
 593         }
 594
 595         usb_free_urb(urb);
 596
 597         return err;
 598 }
 599
 600 static void btusb_tx_complete(struct urb *urb)
 601 {
 602         struct sk_buff *skb = urb->context;
 603         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 604         struct btusb_data *data = hci_get_drvdata(hdev);
 605
 606         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 607                urb->actual_length);
 608
 609         if (!test_bit(HCI_RUNNING, &hdev->flags))
 610                 goto done;
 611
 612         if (!urb->status)
 613                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 614         else
 615                 hdev->stat.err_tx++;
 616
 617 done:
 618         spin_lock(&data->txlock);
 619         data->tx_in_flight--;
 620         spin_unlock(&data->txlock);
 621
 622         kfree(urb->setup_packet);
 623
 624         kfree_skb(skb);
 625 }
 626
 627 static void btusb_isoc_tx_complete(struct urb *urb)
 628 {
 629         struct sk_buff *skb = urb->context;
 630         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 631
 632         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 633                urb->actual_length);
 634
 635         if (!test_bit(HCI_RUNNING, &hdev->flags))
 636                 goto done;
 637
 638         if (!urb->status)
 639                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 640         else
 641                 hdev->stat.err_tx++;
 642
 643 done:
 644         kfree(urb->setup_packet);
 645
 646         kfree_skb(skb);
 647 }
 648
 649 static int btusb_open(struct hci_dev *hdev)
 650 {
 651         struct btusb_data *data = hci_get_drvdata(hdev);
 652         int err;
 653
 654         BT_DBG("%s", hdev->name);
 655
 656         err = usb_autopm_get_interface(data->intf);
 657         if (err < 0)
 658                 return err;
 659
 660         data->intf->needs_remote_wakeup = 1;
 661
 662         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 663                 goto done;
 664
 665         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 666                 goto done;
 667
 668         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 669         if (err < 0)
 670                 goto failed;
 671
 672         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 673         if (err < 0) {
 674                 usb_kill_anchored_urbs(&data->intr_anchor);
 675                 goto failed;
 676         }
 677
 678         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 679         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 680
 681 done:
 682         usb_autopm_put_interface(data->intf);
 683         return 0;
 684
 685 failed:
 686         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 687         clear_bit(HCI_RUNNING, &hdev->flags);
 688         usb_autopm_put_interface(data->intf);
 689         return err;
 690 }
 691
 692 static void btusb_stop_traffic(struct btusb_data *data)
 693 {
 694         usb_kill_anchored_urbs(&data->intr_anchor);
 695         usb_kill_anchored_urbs(&data->bulk_anchor);
 696         usb_kill_anchored_urbs(&data->isoc_anchor);
 697 }
 698
 699 static int btusb_close(struct hci_dev *hdev)
 700 {
 701         struct btusb_data *data = hci_get_drvdata(hdev);
 702         int err;
 703
 704         BT_DBG("%s", hdev->name);
 705
 706         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 707                 return 0;
 708
 709         cancel_work_sync(&data->work);
 710         cancel_work_sync(&data->waker);
 711
 712         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 713         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 714         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 715
 716         btusb_stop_traffic(data);
 717         err = usb_autopm_get_interface(data->intf);
 718         if (err < 0)
 719                 goto failed;
 720
 721         data->intf->needs_remote_wakeup = 0;
 722         usb_autopm_put_interface(data->intf);
 723
 724 failed:
 725         usb_scuttle_anchored_urbs(&data->deferred);
 726         return 0;
 727 }
 728
 729 static int btusb_flush(struct hci_dev *hdev)
 730 {
 731         struct btusb_data *data = hci_get_drvdata(hdev);
 732
 733         BT_DBG("%s", hdev->name);
 734
 735         usb_kill_anchored_urbs(&data->tx_anchor);
 736
 737         return 0;
 738 }
 739
 740 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 741 {
 742         struct btusb_data *data = hci_get_drvdata(hdev);
 743         struct usb_ctrlrequest *dr;
 744         struct urb *urb;
 745         unsigned int pipe;
 746
 747         urb = usb_alloc_urb(0, GFP_KERNEL);
 748         if (!urb)
 749                 return ERR_PTR(-ENOMEM);
 750
 751         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 752         if (!dr) {
 753                 usb_free_urb(urb);
 754                 return ERR_PTR(-ENOMEM);
 755         }
 756
 757         dr->bRequestType = data->cmdreq_type;
 758         dr->bRequest     = 0;
 759         dr->wIndex       = 0;
 760         dr->wValue       = 0;
 761         dr->wLength      = __cpu_to_le16(skb->len);
 762
 763         pipe = usb_sndctrlpipe(data->udev, 0x00);
 764
 765         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 766                              skb->data, skb->len, btusb_tx_complete, skb);
 767
 768         skb->dev = (void *)hdev;
 769
 770         return urb;
 771 }
 772
 773 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 774 {
 775         struct btusb_data *data = hci_get_drvdata(hdev);
 776         struct urb *urb;
 777         unsigned int pipe;
 778
 779         if (!data->bulk_tx_ep)
 780                 return ERR_PTR(-ENODEV);
 781
 782         urb = usb_alloc_urb(0, GFP_KERNEL);
 783         if (!urb)
 784                 return ERR_PTR(-ENOMEM);
 785
 786         pipe = usb_sndbulkpipe(data->udev, 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         skb->dev = (void *)hdev;
 792
 793         return urb;
 794 }
 795
 796 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 797 {
 798         struct btusb_data *data = hci_get_drvdata(hdev);
 799         struct urb *urb;
 800         unsigned int pipe;
 801
 802         if (!data->isoc_tx_ep)
 803                 return ERR_PTR(-ENODEV);
 804
 805         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 806         if (!urb)
 807                 return ERR_PTR(-ENOMEM);
 808
 809         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
 810
 811         usb_fill_int_urb(urb, data->udev, pipe,
 812                          skb->data, skb->len, btusb_isoc_tx_complete,
 813                          skb, data->isoc_tx_ep->bInterval);
 814
 815         urb->transfer_flags  = URB_ISO_ASAP;
 816
 817         __fill_isoc_descriptor(urb, skb->len,
 818                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 819
 820         skb->dev = (void *)hdev;
 821
 822         return urb;
 823 }
 824
 825 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
 826 {
 827         struct btusb_data *data = hci_get_drvdata(hdev);
 828         int err;
 829
 830         usb_anchor_urb(urb, &data->tx_anchor);
 831
 832         err = usb_submit_urb(urb, GFP_KERNEL);
 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         usb_free_urb(urb);
 844         return err;
 845 }
 846
 847 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
 848 {
 849         struct btusb_data *data = hci_get_drvdata(hdev);
 850         unsigned long flags;
 851         bool suspending;
 852
 853         spin_lock_irqsave(&data->txlock, flags);
 854         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
 855         if (!suspending)
 856                 data->tx_in_flight++;
 857         spin_unlock_irqrestore(&data->txlock, flags);
 858
 859         if (!suspending)
 860                 return submit_tx_urb(hdev, urb);
 861
 862         usb_anchor_urb(urb, &data->deferred);
 863         schedule_work(&data->waker);
 864
 865         usb_free_urb(urb);
 866         return 0;
 867 }
 868
 869 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 870 {
 871         struct urb *urb;
 872
 873         BT_DBG("%s", hdev->name);
 874
 875         if (!test_bit(HCI_RUNNING, &hdev->flags))
 876                 return -EBUSY;
 877
 878         switch (bt_cb(skb)->pkt_type) {
 879         case HCI_COMMAND_PKT:
 880                 urb = alloc_ctrl_urb(hdev, skb);
 881                 if (IS_ERR(urb))
 882                         return PTR_ERR(urb);
 883
 884                 hdev->stat.cmd_tx++;
 885                 return submit_or_queue_tx_urb(hdev, urb);
 886
 887         case HCI_ACLDATA_PKT:
 888                 urb = alloc_bulk_urb(hdev, skb);
 889                 if (IS_ERR(urb))
 890                         return PTR_ERR(urb);
 891
 892                 hdev->stat.acl_tx++;
 893                 return submit_or_queue_tx_urb(hdev, urb);
 894
 895         case HCI_SCODATA_PKT:
 896                 if (hci_conn_num(hdev, SCO_LINK) < 1)
 897                         return -ENODEV;
 898
 899                 urb = alloc_isoc_urb(hdev, skb);
 900                 if (IS_ERR(urb))
 901                         return PTR_ERR(urb);
 902
 903                 hdev->stat.sco_tx++;
 904                 return submit_tx_urb(hdev, urb);
 905         }
 906
 907         return -EILSEQ;
 908 }
 909
 910 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 911 {
 912         struct btusb_data *data = hci_get_drvdata(hdev);
 913
 914         BT_DBG("%s evt %d", hdev->name, evt);
 915
 916         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 917                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 918                 schedule_work(&data->work);
 919         }
 920 }
 921
 922 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 923 {
 924         struct btusb_data *data = hci_get_drvdata(hdev);
 925         struct usb_interface *intf = data->isoc;
 926         struct usb_endpoint_descriptor *ep_desc;
 927         int i, err;
 928
 929         if (!data->isoc)
 930                 return -ENODEV;
 931
 932         err = usb_set_interface(data->udev, 1, altsetting);
 933         if (err < 0) {
 934                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 935                 return err;
 936         }
 937
 938         data->isoc_altsetting = altsetting;
 939
 940         data->isoc_tx_ep = NULL;
 941         data->isoc_rx_ep = NULL;
 942
 943         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 944                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 945
 946                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 947                         data->isoc_tx_ep = ep_desc;
 948                         continue;
 949                 }
 950
 951                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 952                         data->isoc_rx_ep = ep_desc;
 953                         continue;
 954                 }
 955         }
 956
 957         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 958                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 959                 return -ENODEV;
 960         }
 961
 962         return 0;
 963 }
 964
 965 static void btusb_work(struct work_struct *work)
 966 {
 967         struct btusb_data *data = container_of(work, struct btusb_data, work);
 968         struct hci_dev *hdev = data->hdev;
 969         int new_alts;
 970         int err;
 971
 972         if (data->sco_num > 0) {
 973                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 974                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 975                         if (err < 0) {
 976                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 977                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 978                                 return;
 979                         }
 980
 981                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 982                 }
 983
 984                 if (hdev->voice_setting & 0x0020) {
 985                         static const int alts[3] = { 2, 4, 5 };
 986
 987                         new_alts = alts[data->sco_num - 1];
 988                 } else {
 989                         new_alts = data->sco_num;
 990                 }
 991
 992                 if (data->isoc_altsetting != new_alts) {
 993                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 994                         usb_kill_anchored_urbs(&data->isoc_anchor);
 995
 996                         if (__set_isoc_interface(hdev, new_alts) < 0)
 997                                 return;
 998                 }
 999
1000                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1001                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1002                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1003                         else
1004                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1005                 }
1006         } else {
1007                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1008                 usb_kill_anchored_urbs(&data->isoc_anchor);
1009
1010                 __set_isoc_interface(hdev, 0);
1011                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1012                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1013         }
1014 }
1015
1016 static void btusb_waker(struct work_struct *work)
1017 {
1018         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1019         int err;
1020
1021         err = usb_autopm_get_interface(data->intf);
1022         if (err < 0)
1023                 return;
1024
1025         usb_autopm_put_interface(data->intf);
1026 }
1027
1028 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1029 {
1030         struct sk_buff *skb;
1031         u8 val = 0x00;
1032
1033         BT_DBG("%s", hdev->name);
1034
1035         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1036         if (IS_ERR(skb))
1037                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1038         else
1039                 kfree_skb(skb);
1040
1041         return 0;
1042 }
1043
1044 static int btusb_setup_csr(struct hci_dev *hdev)
1045 {
1046         struct hci_rp_read_local_version *rp;
1047         struct sk_buff *skb;
1048         int ret;
1049
1050         BT_DBG("%s", hdev->name);
1051
1052         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1053                              HCI_INIT_TIMEOUT);
1054         if (IS_ERR(skb)) {
1055                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1056                 return -PTR_ERR(skb);
1057         }
1058
1059         rp = (struct hci_rp_read_local_version *)skb->data;
1060
1061         if (!rp->status) {
1062                 if (le16_to_cpu(rp->manufacturer) != 10) {
1063                         /* Clear the reset quirk since this is not an actual
1064                          * early Bluetooth 1.1 device from CSR.
1065                          */
1066                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1067
1068                         /* These fake CSR controllers have all a broken
1069                          * stored link key handling and so just disable it.
1070                          */
1071                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1072                                 &hdev->quirks);
1073                 }
1074         }
1075
1076         ret = -bt_to_errno(rp->status);
1077
1078         kfree_skb(skb);
1079
1080         return ret;
1081 }
1082
1083 struct intel_version {
1084         u8 status;
1085         u8 hw_platform;
1086         u8 hw_variant;
1087         u8 hw_revision;
1088         u8 fw_variant;
1089         u8 fw_revision;
1090         u8 fw_build_num;
1091         u8 fw_build_ww;
1092         u8 fw_build_yy;
1093         u8 fw_patch_num;
1094 } __packed;
1095
1096 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1097                                                        struct intel_version *ver)
1098 {
1099         const struct firmware *fw;
1100         char fwname[64];
1101         int ret;
1102
1103         snprintf(fwname, sizeof(fwname),
1104                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1105                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1106                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1107                  ver->fw_build_ww, ver->fw_build_yy);
1108
1109         ret = request_firmware(&fw, fwname, &hdev->dev);
1110         if (ret < 0) {
1111                 if (ret == -EINVAL) {
1112                         BT_ERR("%s Intel firmware file request failed (%d)",
1113                                hdev->name, ret);
1114                         return NULL;
1115                 }
1116
1117                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1118                        hdev->name, fwname, ret);
1119
1120                 /* If the correct firmware patch file is not found, use the
1121                  * default firmware patch file instead
1122                  */
1123                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1124                          ver->hw_platform, ver->hw_variant);
1125                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1126                         BT_ERR("%s failed to open default Intel fw file: %s",
1127                                hdev->name, fwname);
1128                         return NULL;
1129                 }
1130         }
1131
1132         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1133
1134         return fw;
1135 }
1136
1137 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1138                                       const struct firmware *fw,
1139                                       const u8 **fw_ptr, int *disable_patch)
1140 {
1141         struct sk_buff *skb;
1142         struct hci_command_hdr *cmd;
1143         const u8 *cmd_param;
1144         struct hci_event_hdr *evt = NULL;
1145         const u8 *evt_param = NULL;
1146         int remain = fw->size - (*fw_ptr - fw->data);
1147
1148         /* The first byte indicates the types of the patch command or event.
1149          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1150          * in the current firmware buffer doesn't start with 0x01 or
1151          * the size of remain buffer is smaller than HCI command header,
1152          * the firmware file is corrupted and it should stop the patching
1153          * process.
1154          */
1155         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1156                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1157                 return -EINVAL;
1158         }
1159         (*fw_ptr)++;
1160         remain--;
1161
1162         cmd = (struct hci_command_hdr *)(*fw_ptr);
1163         *fw_ptr += sizeof(*cmd);
1164         remain -= sizeof(*cmd);
1165
1166         /* Ensure that the remain firmware data is long enough than the length
1167          * of command parameter. If not, the firmware file is corrupted.
1168          */
1169         if (remain < cmd->plen) {
1170                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1171                 return -EFAULT;
1172         }
1173
1174         /* If there is a command that loads a patch in the firmware
1175          * file, then enable the patch upon success, otherwise just
1176          * disable the manufacturer mode, for example patch activation
1177          * is not required when the default firmware patch file is used
1178          * because there are no patch data to load.
1179          */
1180         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1181                 *disable_patch = 0;
1182
1183         cmd_param = *fw_ptr;
1184         *fw_ptr += cmd->plen;
1185         remain -= cmd->plen;
1186
1187         /* This reads the expected events when the above command is sent to the
1188          * device. Some vendor commands expects more than one events, for
1189          * example command status event followed by vendor specific event.
1190          * For this case, it only keeps the last expected event. so the command
1191          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1192          * last expected event.
1193          */
1194         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1195                 (*fw_ptr)++;
1196                 remain--;
1197
1198                 evt = (struct hci_event_hdr *)(*fw_ptr);
1199                 *fw_ptr += sizeof(*evt);
1200                 remain -= sizeof(*evt);
1201
1202                 if (remain < evt->plen) {
1203                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1204                                hdev->name);
1205                         return -EFAULT;
1206                 }
1207
1208                 evt_param = *fw_ptr;
1209                 *fw_ptr += evt->plen;
1210                 remain -= evt->plen;
1211         }
1212
1213         /* Every HCI commands in the firmware file has its correspond event.
1214          * If event is not found or remain is smaller than zero, the firmware
1215          * file is corrupted.
1216          */
1217         if (!evt || !evt_param || remain < 0) {
1218                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1219                 return -EFAULT;
1220         }
1221
1222         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1223                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1224         if (IS_ERR(skb)) {
1225                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1226                        hdev->name, cmd->opcode, PTR_ERR(skb));
1227                 return PTR_ERR(skb);
1228         }
1229
1230         /* It ensures that the returned event matches the event data read from
1231          * the firmware file. At fist, it checks the length and then
1232          * the contents of the event.
1233          */
1234         if (skb->len != evt->plen) {
1235                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1236                        le16_to_cpu(cmd->opcode));
1237                 kfree_skb(skb);
1238                 return -EFAULT;
1239         }
1240
1241         if (memcmp(skb->data, evt_param, evt->plen)) {
1242                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1243                        hdev->name, le16_to_cpu(cmd->opcode));
1244                 kfree_skb(skb);
1245                 return -EFAULT;
1246         }
1247         kfree_skb(skb);
1248
1249         return 0;
1250 }
1251
1252 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1253
1254 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1255 {
1256         struct sk_buff *skb;
1257         struct hci_rp_read_bd_addr *rp;
1258
1259         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1260                              HCI_INIT_TIMEOUT);
1261         if (IS_ERR(skb)) {
1262                 BT_ERR("%s reading Intel device address failed (%ld)",
1263                        hdev->name, PTR_ERR(skb));
1264                 return PTR_ERR(skb);
1265         }
1266
1267         if (skb->len != sizeof(*rp)) {
1268                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1269                 kfree_skb(skb);
1270                 return -EIO;
1271         }
1272
1273         rp = (struct hci_rp_read_bd_addr *)skb->data;
1274         if (rp->status) {
1275                 BT_ERR("%s Intel device address result failed (%02x)",
1276                        hdev->name, rp->status);
1277                 kfree_skb(skb);
1278                 return -bt_to_errno(rp->status);
1279         }
1280
1281         /* For some Intel based controllers, the default Bluetooth device
1282          * address 00:03:19:9E:8B:00 can be found. These controllers are
1283          * fully operational, but have the danger of duplicate addresses
1284          * and that in turn can cause problems with Bluetooth operation.
1285          */
1286         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1287                 BT_ERR("%s found Intel default device address (%pMR)",
1288                        hdev->name, &rp->bdaddr);
1289                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1290         }
1291
1292         kfree_skb(skb);
1293
1294         return 0;
1295 }
1296
1297 static int btusb_setup_intel(struct hci_dev *hdev)
1298 {
1299         struct sk_buff *skb;
1300         const struct firmware *fw;
1301         const u8 *fw_ptr;
1302         int disable_patch;
1303         struct intel_version *ver;
1304
1305         const u8 mfg_enable[] = { 0x01, 0x00 };
1306         const u8 mfg_disable[] = { 0x00, 0x00 };
1307         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1308         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1309
1310         BT_DBG("%s", hdev->name);
1311
1312         /* The controller has a bug with the first HCI command sent to it
1313          * returning number of completed commands as zero. This would stall the
1314          * command processing in the Bluetooth core.
1315          *
1316          * As a workaround, send HCI Reset command first which will reset the
1317          * number of completed commands and allow normal command processing
1318          * from now on.
1319          */
1320         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1321         if (IS_ERR(skb)) {
1322                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1323                        hdev->name, PTR_ERR(skb));
1324                 return PTR_ERR(skb);
1325         }
1326         kfree_skb(skb);
1327
1328         /* Read Intel specific controller version first to allow selection of
1329          * which firmware file to load.
1330          *
1331          * The returned information are hardware variant and revision plus
1332          * firmware variant, revision and build number.
1333          */
1334         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1335         if (IS_ERR(skb)) {
1336                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1337                        hdev->name, PTR_ERR(skb));
1338                 return PTR_ERR(skb);
1339         }
1340
1341         if (skb->len != sizeof(*ver)) {
1342                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1343                 kfree_skb(skb);
1344                 return -EIO;
1345         }
1346
1347         ver = (struct intel_version *)skb->data;
1348         if (ver->status) {
1349                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1350                        ver->status);
1351                 kfree_skb(skb);
1352                 return -bt_to_errno(ver->status);
1353         }
1354
1355         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1356                 hdev->name, ver->hw_platform, ver->hw_variant,
1357                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1358                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1359                 ver->fw_patch_num);
1360
1361         /* fw_patch_num indicates the version of patch the device currently
1362          * have. If there is no patch data in the device, it is always 0x00.
1363          * So, if it is other than 0x00, no need to patch the deivce again.
1364          */
1365         if (ver->fw_patch_num) {
1366                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1367                         hdev->name, ver->fw_patch_num);
1368                 kfree_skb(skb);
1369                 btusb_check_bdaddr_intel(hdev);
1370                 return 0;
1371         }
1372
1373         /* Opens the firmware patch file based on the firmware version read
1374          * from the controller. If it fails to open the matching firmware
1375          * patch file, it tries to open the default firmware patch file.
1376          * If no patch file is found, allow the device to operate without
1377          * a patch.
1378          */
1379         fw = btusb_setup_intel_get_fw(hdev, ver);
1380         if (!fw) {
1381                 kfree_skb(skb);
1382                 btusb_check_bdaddr_intel(hdev);
1383                 return 0;
1384         }
1385         fw_ptr = fw->data;
1386
1387         /* This Intel specific command enables the manufacturer mode of the
1388          * controller.
1389          *
1390          * Only while this mode is enabled, the driver can download the
1391          * firmware patch data and configuration parameters.
1392          */
1393         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1394         if (IS_ERR(skb)) {
1395                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1396                        hdev->name, PTR_ERR(skb));
1397                 release_firmware(fw);
1398                 return PTR_ERR(skb);
1399         }
1400
1401         if (skb->data[0]) {
1402                 u8 evt_status = skb->data[0];
1403
1404                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1405                        hdev->name, evt_status);
1406                 kfree_skb(skb);
1407                 release_firmware(fw);
1408                 return -bt_to_errno(evt_status);
1409         }
1410         kfree_skb(skb);
1411
1412         disable_patch = 1;
1413
1414         /* The firmware data file consists of list of Intel specific HCI
1415          * commands and its expected events. The first byte indicates the
1416          * type of the message, either HCI command or HCI event.
1417          *
1418          * It reads the command and its expected event from the firmware file,
1419          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1420          * the returned event is compared with the event read from the firmware
1421          * file and it will continue until all the messages are downloaded to
1422          * the controller.
1423          *
1424          * Once the firmware patching is completed successfully,
1425          * the manufacturer mode is disabled with reset and activating the
1426          * downloaded patch.
1427          *
1428          * If the firmware patching fails, the manufacturer mode is
1429          * disabled with reset and deactivating the patch.
1430          *
1431          * If the default patch file is used, no reset is done when disabling
1432          * the manufacturer.
1433          */
1434         while (fw->size > fw_ptr - fw->data) {
1435                 int ret;
1436
1437                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1438                                                  &disable_patch);
1439                 if (ret < 0)
1440                         goto exit_mfg_deactivate;
1441         }
1442
1443         release_firmware(fw);
1444
1445         if (disable_patch)
1446                 goto exit_mfg_disable;
1447
1448         /* Patching completed successfully and disable the manufacturer mode
1449          * with reset and activate the downloaded firmware patches.
1450          */
1451         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1452                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1453         if (IS_ERR(skb)) {
1454                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1455                        hdev->name, PTR_ERR(skb));
1456                 return PTR_ERR(skb);
1457         }
1458         kfree_skb(skb);
1459
1460         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1461                 hdev->name);
1462
1463         btusb_check_bdaddr_intel(hdev);
1464         return 0;
1465
1466 exit_mfg_disable:
1467         /* Disable the manufacturer mode without reset */
1468         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1469                              HCI_INIT_TIMEOUT);
1470         if (IS_ERR(skb)) {
1471                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1472                        hdev->name, PTR_ERR(skb));
1473                 return PTR_ERR(skb);
1474         }
1475         kfree_skb(skb);
1476
1477         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1478
1479         btusb_check_bdaddr_intel(hdev);
1480         return 0;
1481
1482 exit_mfg_deactivate:
1483         release_firmware(fw);
1484
1485         /* Patching failed. Disable the manufacturer mode with reset and
1486          * deactivate the downloaded firmware patches.
1487          */
1488         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1489                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1490         if (IS_ERR(skb)) {
1491                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1492                        hdev->name, PTR_ERR(skb));
1493                 return PTR_ERR(skb);
1494         }
1495         kfree_skb(skb);
1496
1497         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1498                 hdev->name);
1499
1500         btusb_check_bdaddr_intel(hdev);
1501         return 0;
1502 }
1503
1504 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1505 {
1506         struct sk_buff *skb;
1507         long ret;
1508
1509         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1510         if (IS_ERR(skb)) {
1511                 ret = PTR_ERR(skb);
1512                 BT_ERR("%s: changing Intel device address failed (%ld)",
1513                        hdev->name, ret);
1514                 return ret;
1515         }
1516         kfree_skb(skb);
1517
1518         return 0;
1519 }
1520
1521 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1522                                     const bdaddr_t *bdaddr)
1523 {
1524         struct sk_buff *skb;
1525         u8 buf[8];
1526         long ret;
1527
1528         buf[0] = 0xfe;
1529         buf[1] = sizeof(bdaddr_t);
1530         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1531
1532         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1533         if (IS_ERR(skb)) {
1534                 ret = PTR_ERR(skb);
1535                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1536                        hdev->name, ret);
1537                 return ret;
1538         }
1539         kfree_skb(skb);
1540
1541         return 0;
1542 }
1543
1544 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1545
1546 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1547 {
1548         struct btusb_data *data = hci_get_drvdata(hdev);
1549         struct usb_device *udev = data->udev;
1550         char fw_name[64];
1551         const struct firmware *fw;
1552         const u8 *fw_ptr;
1553         size_t fw_size;
1554         const struct hci_command_hdr *cmd;
1555         const u8 *cmd_param;
1556         u16 opcode;
1557         struct sk_buff *skb;
1558         struct hci_rp_read_local_version *ver;
1559         struct hci_rp_read_bd_addr *bda;
1560         long ret;
1561
1562         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1563                  udev->product ? udev->product : "BCM",
1564                  le16_to_cpu(udev->descriptor.idVendor),
1565                  le16_to_cpu(udev->descriptor.idProduct));
1566
1567         ret = request_firmware(&fw, fw_name, &hdev->dev);
1568         if (ret < 0) {
1569                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1570                 return 0;
1571         }
1572
1573         /* Reset */
1574         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1575         if (IS_ERR(skb)) {
1576                 ret = PTR_ERR(skb);
1577                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1578                 goto done;
1579         }
1580         kfree_skb(skb);
1581
1582         /* Read Local Version Info */
1583         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1584                              HCI_INIT_TIMEOUT);
1585         if (IS_ERR(skb)) {
1586                 ret = PTR_ERR(skb);
1587                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1588                        hdev->name, ret);
1589                 goto done;
1590         }
1591
1592         if (skb->len != sizeof(*ver)) {
1593                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1594                        hdev->name);
1595                 kfree_skb(skb);
1596                 ret = -EIO;
1597                 goto done;
1598         }
1599
1600         ver = (struct hci_rp_read_local_version *)skb->data;
1601         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1602                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1603                 ver->lmp_ver, ver->lmp_subver);
1604         kfree_skb(skb);
1605
1606         /* Start Download */
1607         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1608         if (IS_ERR(skb)) {
1609                 ret = PTR_ERR(skb);
1610                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1611                        hdev->name, ret);
1612                 goto reset_fw;
1613         }
1614         kfree_skb(skb);
1615
1616         /* 50 msec delay after Download Minidrv completes */
1617         msleep(50);
1618
1619         fw_ptr = fw->data;
1620         fw_size = fw->size;
1621
1622         while (fw_size >= sizeof(*cmd)) {
1623                 cmd = (struct hci_command_hdr *)fw_ptr;
1624                 fw_ptr += sizeof(*cmd);
1625                 fw_size -= sizeof(*cmd);
1626
1627                 if (fw_size < cmd->plen) {
1628                         BT_ERR("%s: BCM: patch %s is corrupted",
1629                                hdev->name, fw_name);
1630                         ret = -EINVAL;
1631                         goto reset_fw;
1632                 }
1633
1634                 cmd_param = fw_ptr;
1635                 fw_ptr += cmd->plen;
1636                 fw_size -= cmd->plen;
1637
1638                 opcode = le16_to_cpu(cmd->opcode);
1639
1640                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1641                                      HCI_INIT_TIMEOUT);
1642                 if (IS_ERR(skb)) {
1643                         ret = PTR_ERR(skb);
1644                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1645                                hdev->name, opcode, ret);
1646                         goto reset_fw;
1647                 }
1648                 kfree_skb(skb);
1649         }
1650
1651         /* 250 msec delay after Launch Ram completes */
1652         msleep(250);
1653
1654 reset_fw:
1655         /* Reset */
1656         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1657         if (IS_ERR(skb)) {
1658                 ret = PTR_ERR(skb);
1659                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1660                 goto done;
1661         }
1662         kfree_skb(skb);
1663
1664         /* Read Local Version Info */
1665         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1666                              HCI_INIT_TIMEOUT);
1667         if (IS_ERR(skb)) {
1668                 ret = PTR_ERR(skb);
1669                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1670                        hdev->name, ret);
1671                 goto done;
1672         }
1673
1674         if (skb->len != sizeof(*ver)) {
1675                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1676                        hdev->name);
1677                 kfree_skb(skb);
1678                 ret = -EIO;
1679                 goto done;
1680         }
1681
1682         ver = (struct hci_rp_read_local_version *)skb->data;
1683         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1684                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1685                 ver->lmp_ver, ver->lmp_subver);
1686         kfree_skb(skb);
1687
1688         /* Read BD Address */
1689         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1690                              HCI_INIT_TIMEOUT);
1691         if (IS_ERR(skb)) {
1692                 ret = PTR_ERR(skb);
1693                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1694                        hdev->name, ret);
1695                 goto done;
1696         }
1697
1698         if (skb->len != sizeof(*bda)) {
1699                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1700                        hdev->name);
1701                 kfree_skb(skb);
1702                 ret = -EIO;
1703                 goto done;
1704         }
1705
1706         bda = (struct hci_rp_read_bd_addr *)skb->data;
1707         if (bda->status) {
1708                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1709                        hdev->name, bda->status);
1710                 kfree_skb(skb);
1711                 ret = -bt_to_errno(bda->status);
1712                 goto done;
1713         }
1714
1715         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1716          * with no configured address.
1717          */
1718         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1719                 BT_INFO("%s: BCM: using default device address (%pMR)",
1720                         hdev->name, &bda->bdaddr);
1721                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1722         }
1723
1724         kfree_skb(skb);
1725
1726 done:
1727         release_firmware(fw);
1728
1729         return ret;
1730 }
1731
1732 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1733 {
1734         struct sk_buff *skb;
1735         long ret;
1736
1737         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1738         if (IS_ERR(skb)) {
1739                 ret = PTR_ERR(skb);
1740                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1741                        hdev->name, ret);
1742                 return ret;
1743         }
1744         kfree_skb(skb);
1745
1746         return 0;
1747 }
1748
1749 static int btusb_probe(struct usb_interface *intf,
1750                        const struct usb_device_id *id)
1751 {
1752         struct usb_endpoint_descriptor *ep_desc;
1753         struct btusb_data *data;
1754         struct hci_dev *hdev;
1755         int i, err;
1756
1757         BT_DBG("intf %p id %p", intf, id);
1758
1759         /* interface numbers are hardcoded in the spec */
1760         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1761                 return -ENODEV;
1762
1763         if (!id->driver_info) {
1764                 const struct usb_device_id *match;
1765
1766                 match = usb_match_id(intf, blacklist_table);
1767                 if (match)
1768                         id = match;
1769         }
1770
1771         if (id->driver_info == BTUSB_IGNORE)
1772                 return -ENODEV;
1773
1774         if (id->driver_info & BTUSB_ATH3012) {
1775                 struct usb_device *udev = interface_to_usbdev(intf);
1776
1777                 /* Old firmware would otherwise let ath3k driver load
1778                  * patch and sysconfig files */
1779                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1780                         return -ENODEV;
1781         }
1782
1783         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1784         if (!data)
1785                 return -ENOMEM;
1786
1787         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1788                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1789
1790                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1791                         data->intr_ep = ep_desc;
1792                         continue;
1793                 }
1794
1795                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1796                         data->bulk_tx_ep = ep_desc;
1797                         continue;
1798                 }
1799
1800                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1801                         data->bulk_rx_ep = ep_desc;
1802                         continue;
1803                 }
1804         }
1805
1806         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1807                 return -ENODEV;
1808
1809         data->cmdreq_type = USB_TYPE_CLASS;
1810
1811         data->udev = interface_to_usbdev(intf);
1812         data->intf = intf;
1813
1814         spin_lock_init(&data->lock);
1815
1816         INIT_WORK(&data->work, btusb_work);
1817         INIT_WORK(&data->waker, btusb_waker);
1818         spin_lock_init(&data->txlock);
1819
1820         init_usb_anchor(&data->tx_anchor);
1821         init_usb_anchor(&data->intr_anchor);
1822         init_usb_anchor(&data->bulk_anchor);
1823         init_usb_anchor(&data->isoc_anchor);
1824         init_usb_anchor(&data->deferred);
1825
1826         hdev = hci_alloc_dev();
1827         if (!hdev)
1828                 return -ENOMEM;
1829
1830         hdev->bus = HCI_USB;
1831         hci_set_drvdata(hdev, data);
1832
1833         data->hdev = hdev;
1834
1835         SET_HCIDEV_DEV(hdev, &intf->dev);
1836
1837         hdev->open   = btusb_open;
1838         hdev->close  = btusb_close;
1839         hdev->flush  = btusb_flush;
1840         hdev->send   = btusb_send_frame;
1841         hdev->notify = btusb_notify;
1842
1843         if (id->driver_info & BTUSB_BCM92035)
1844                 hdev->setup = btusb_setup_bcm92035;
1845
1846         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1847                 hdev->setup = btusb_setup_bcm_patchram;
1848                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1849         }
1850
1851         if (id->driver_info & BTUSB_INTEL) {
1852                 hdev->setup = btusb_setup_intel;
1853                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1854         }
1855
1856         if (id->driver_info & BTUSB_MARVELL)
1857                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
1858
1859         if (id->driver_info & BTUSB_INTEL_BOOT)
1860                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1861
1862         /* Interface numbers are hardcoded in the specification */
1863         data->isoc = usb_ifnum_to_if(data->udev, 1);
1864
1865         if (!reset)
1866                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1867
1868         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1869                 if (!disable_scofix)
1870                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1871         }
1872
1873         if (id->driver_info & BTUSB_BROKEN_ISOC)
1874                 data->isoc = NULL;
1875
1876         if (id->driver_info & BTUSB_DIGIANSWER) {
1877                 data->cmdreq_type = USB_TYPE_VENDOR;
1878                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1879         }
1880
1881         if (id->driver_info & BTUSB_CSR) {
1882                 struct usb_device *udev = data->udev;
1883                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1884
1885                 /* Old firmware would otherwise execute USB reset */
1886                 if (bcdDevice < 0x117)
1887                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1888
1889                 /* Fake CSR devices with broken commands */
1890                 if (bcdDevice <= 0x100)
1891                         hdev->setup = btusb_setup_csr;
1892         }
1893
1894         if (id->driver_info & BTUSB_SNIFFER) {
1895                 struct usb_device *udev = data->udev;
1896
1897                 /* New sniffer firmware has crippled HCI interface */
1898                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1899                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1900         }
1901
1902         if (id->driver_info & BTUSB_INTEL_BOOT) {
1903                 /* A bug in the bootloader causes that interrupt interface is
1904                  * only enabled after receiving SetInterface(0, AltSetting=0).
1905                  */
1906                 err = usb_set_interface(data->udev, 0, 0);
1907                 if (err < 0) {
1908                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1909                         hci_free_dev(hdev);
1910                         return err;
1911                 }
1912         }
1913
1914         if (data->isoc) {
1915                 err = usb_driver_claim_interface(&btusb_driver,
1916                                                  data->isoc, data);
1917                 if (err < 0) {
1918                         hci_free_dev(hdev);
1919                         return err;
1920                 }
1921         }
1922
1923         err = hci_register_dev(hdev);
1924         if (err < 0) {
1925                 hci_free_dev(hdev);
1926                 return err;
1927         }
1928
1929         usb_set_intfdata(intf, data);
1930
1931         return 0;
1932 }
1933
1934 static void btusb_disconnect(struct usb_interface *intf)
1935 {
1936         struct btusb_data *data = usb_get_intfdata(intf);
1937         struct hci_dev *hdev;
1938
1939         BT_DBG("intf %p", intf);
1940
1941         if (!data)
1942                 return;
1943
1944         hdev = data->hdev;
1945         usb_set_intfdata(data->intf, NULL);
1946
1947         if (data->isoc)
1948                 usb_set_intfdata(data->isoc, NULL);
1949
1950         hci_unregister_dev(hdev);
1951
1952         if (intf == data->isoc)
1953                 usb_driver_release_interface(&btusb_driver, data->intf);
1954         else if (data->isoc)
1955                 usb_driver_release_interface(&btusb_driver, data->isoc);
1956
1957         hci_free_dev(hdev);
1958 }
1959
1960 #ifdef CONFIG_PM
1961 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1962 {
1963         struct btusb_data *data = usb_get_intfdata(intf);
1964
1965         BT_DBG("intf %p", intf);
1966
1967         if (data->suspend_count++)
1968                 return 0;
1969
1970         spin_lock_irq(&data->txlock);
1971         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1972                 set_bit(BTUSB_SUSPENDING, &data->flags);
1973                 spin_unlock_irq(&data->txlock);
1974         } else {
1975                 spin_unlock_irq(&data->txlock);
1976                 data->suspend_count--;
1977                 return -EBUSY;
1978         }
1979
1980         cancel_work_sync(&data->work);
1981
1982         btusb_stop_traffic(data);
1983         usb_kill_anchored_urbs(&data->tx_anchor);
1984
1985         return 0;
1986 }
1987
1988 static void play_deferred(struct btusb_data *data)
1989 {
1990         struct urb *urb;
1991         int err;
1992
1993         while ((urb = usb_get_from_anchor(&data->deferred))) {
1994                 err = usb_submit_urb(urb, GFP_ATOMIC);
1995                 if (err < 0)
1996                         break;
1997
1998                 data->tx_in_flight++;
1999         }
2000         usb_scuttle_anchored_urbs(&data->deferred);
2001 }
2002
2003 static int btusb_resume(struct usb_interface *intf)
2004 {
2005         struct btusb_data *data = usb_get_intfdata(intf);
2006         struct hci_dev *hdev = data->hdev;
2007         int err = 0;
2008
2009         BT_DBG("intf %p", intf);
2010
2011         if (--data->suspend_count)
2012                 return 0;
2013
2014         if (!test_bit(HCI_RUNNING, &hdev->flags))
2015                 goto done;
2016
2017         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2018                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2019                 if (err < 0) {
2020                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2021                         goto failed;
2022                 }
2023         }
2024
2025         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2026                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2027                 if (err < 0) {
2028                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2029                         goto failed;
2030                 }
2031
2032                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2033         }
2034
2035         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2036                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2037                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2038                 else
2039                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2040         }
2041
2042         spin_lock_irq(&data->txlock);
2043         play_deferred(data);
2044         clear_bit(BTUSB_SUSPENDING, &data->flags);
2045         spin_unlock_irq(&data->txlock);
2046         schedule_work(&data->work);
2047
2048         return 0;
2049
2050 failed:
2051         usb_scuttle_anchored_urbs(&data->deferred);
2052 done:
2053         spin_lock_irq(&data->txlock);
2054         clear_bit(BTUSB_SUSPENDING, &data->flags);
2055         spin_unlock_irq(&data->txlock);
2056
2057         return err;
2058 }
2059 #endif
2060
2061 static struct usb_driver btusb_driver = {
2062         .name           = "btusb",
2063         .probe          = btusb_probe,
2064         .disconnect     = btusb_disconnect,
2065 #ifdef CONFIG_PM
2066         .suspend        = btusb_suspend,
2067         .resume         = btusb_resume,
2068 #endif
2069         .id_table       = btusb_table,
2070         .supports_autosuspend = 1,
2071         .disable_hub_initiated_lpm = 1,
2072 };
2073
2074 module_usb_driver(btusb_driver);
2075
2076 module_param(disable_scofix, bool, 0644);
2077 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2078
2079 module_param(force_scofix, bool, 0644);
2080 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2081
2082 module_param(reset, bool, 0644);
2083 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2084
2085 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2086 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2087 MODULE_VERSION(VERSION);
2088 MODULE_LICENSE("GPL");