drivers/bluetooth/btusb.c

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