drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0b05, 0x17b5) },
 105         { USB_DEVICE(0x0b05, 0x17cb) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0489, 0xe042) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /*Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 115
 116         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         { }     /* Terminating entry */
 120 };
 121
 122 MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124 static const struct usb_device_id blacklist_table[] = {
 125         /* CSR BlueCore devices */
 126         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 127
 128         /* Broadcom BCM2033 without firmware */
 129         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 130
 131         /* Atheros 3011 with sflash firmware */
 132         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 135         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros AR9285 Malbec with sflash firmware */
 140         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3012 with sflash firmware */
 143         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 167
 168         /* Atheros AR5BBU12 with sflash firmware */
 169         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 170
 171         /* Atheros AR5BBU12 with sflash firmware */
 172         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 174
 175         /* Broadcom BCM2035 */
 176         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 177         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 178         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 179
 180         /* Broadcom BCM2045 */
 181         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 182         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 183
 184         /* IBM/Lenovo ThinkPad with Broadcom chip */
 185         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 186         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 187
 188         /* HP laptop with Broadcom chip */
 189         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* Dell laptop with Broadcom chip */
 192         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Dell Wireless 370 and 410 devices */
 195         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* Belkin F8T012 and F8T013 devices */
 199         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 200         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Asus WL-BTD202 device */
 203         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Kensington Bluetooth USB adapter */
 206         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* RTX Telecom based adapters with buggy SCO support */
 209         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 210         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 211
 212         /* CONWISE Technology based adapters with buggy SCO support */
 213         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 214
 215         /* Digianswer devices */
 216         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 217         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 218
 219         /* CSR BlueCore Bluetooth Sniffer */
 220         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 221
 222         /* Frontline ComProbe Bluetooth Sniffer */
 223         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 224
 225         /* Intel Bluetooth device */
 226         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 227
 228         { }     /* Terminating entry */
 229 };
 230
 231 #define BTUSB_MAX_ISOC_FRAMES   10
 232
 233 #define BTUSB_INTR_RUNNING      0
 234 #define BTUSB_BULK_RUNNING      1
 235 #define BTUSB_ISOC_RUNNING      2
 236 #define BTUSB_SUSPENDING        3
 237 #define BTUSB_DID_ISO_RESUME    4
 238
 239 struct btusb_data {
 240         struct hci_dev       *hdev;
 241         struct usb_device    *udev;
 242         struct usb_interface *intf;
 243         struct usb_interface *isoc;
 244
 245         spinlock_t lock;
 246
 247         unsigned long flags;
 248
 249         struct work_struct work;
 250         struct work_struct waker;
 251
 252         struct usb_anchor tx_anchor;
 253         struct usb_anchor intr_anchor;
 254         struct usb_anchor bulk_anchor;
 255         struct usb_anchor isoc_anchor;
 256         struct usb_anchor deferred;
 257         int tx_in_flight;
 258         spinlock_t txlock;
 259
 260         struct usb_endpoint_descriptor *intr_ep;
 261         struct usb_endpoint_descriptor *bulk_tx_ep;
 262         struct usb_endpoint_descriptor *bulk_rx_ep;
 263         struct usb_endpoint_descriptor *isoc_tx_ep;
 264         struct usb_endpoint_descriptor *isoc_rx_ep;
 265
 266         __u8 cmdreq_type;
 267
 268         unsigned int sco_num;
 269         int isoc_altsetting;
 270         int suspend_count;
 271 };
 272
 273 static int inc_tx(struct btusb_data *data)
 274 {
 275         unsigned long flags;
 276         int rv;
 277
 278         spin_lock_irqsave(&data->txlock, flags);
 279         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 280         if (!rv)
 281                 data->tx_in_flight++;
 282         spin_unlock_irqrestore(&data->txlock, flags);
 283
 284         return rv;
 285 }
 286
 287 static void btusb_intr_complete(struct urb *urb)
 288 {
 289         struct hci_dev *hdev = urb->context;
 290         struct btusb_data *data = hci_get_drvdata(hdev);
 291         int err;
 292
 293         BT_DBG("%s urb %p status %d count %d", hdev->name,
 294                                         urb, urb->status, urb->actual_length);
 295
 296         if (!test_bit(HCI_RUNNING, &hdev->flags))
 297                 return;
 298
 299         if (urb->status == 0) {
 300                 hdev->stat.byte_rx += urb->actual_length;
 301
 302                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 303                                                 urb->transfer_buffer,
 304                                                 urb->actual_length) < 0) {
 305                         BT_ERR("%s corrupted event packet", hdev->name);
 306                         hdev->stat.err_rx++;
 307                 }
 308         }
 309
 310         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 311                 return;
 312
 313         usb_mark_last_busy(data->udev);
 314         usb_anchor_urb(urb, &data->intr_anchor);
 315
 316         err = usb_submit_urb(urb, GFP_ATOMIC);
 317         if (err < 0) {
 318                 /* -EPERM: urb is being killed;
 319                  * -ENODEV: device got disconnected */
 320                 if (err != -EPERM && err != -ENODEV)
 321                         BT_ERR("%s urb %p failed to resubmit (%d)",
 322                                                 hdev->name, urb, -err);
 323                 usb_unanchor_urb(urb);
 324         }
 325 }
 326
 327 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 328 {
 329         struct btusb_data *data = hci_get_drvdata(hdev);
 330         struct urb *urb;
 331         unsigned char *buf;
 332         unsigned int pipe;
 333         int err, size;
 334
 335         BT_DBG("%s", hdev->name);
 336
 337         if (!data->intr_ep)
 338                 return -ENODEV;
 339
 340         urb = usb_alloc_urb(0, mem_flags);
 341         if (!urb)
 342                 return -ENOMEM;
 343
 344         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 345
 346         buf = kmalloc(size, mem_flags);
 347         if (!buf) {
 348                 usb_free_urb(urb);
 349                 return -ENOMEM;
 350         }
 351
 352         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 353
 354         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 355                                                 btusb_intr_complete, hdev,
 356                                                 data->intr_ep->bInterval);
 357
 358         urb->transfer_flags |= URB_FREE_BUFFER;
 359
 360         usb_anchor_urb(urb, &data->intr_anchor);
 361
 362         err = usb_submit_urb(urb, mem_flags);
 363         if (err < 0) {
 364                 if (err != -EPERM && err != -ENODEV)
 365                         BT_ERR("%s urb %p submission failed (%d)",
 366                                                 hdev->name, urb, -err);
 367                 usb_unanchor_urb(urb);
 368         }
 369
 370         usb_free_urb(urb);
 371
 372         return err;
 373 }
 374
 375 static void btusb_bulk_complete(struct urb *urb)
 376 {
 377         struct hci_dev *hdev = urb->context;
 378         struct btusb_data *data = hci_get_drvdata(hdev);
 379         int err;
 380
 381         BT_DBG("%s urb %p status %d count %d", hdev->name,
 382                                         urb, urb->status, urb->actual_length);
 383
 384         if (!test_bit(HCI_RUNNING, &hdev->flags))
 385                 return;
 386
 387         if (urb->status == 0) {
 388                 hdev->stat.byte_rx += urb->actual_length;
 389
 390                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 391                                                 urb->transfer_buffer,
 392                                                 urb->actual_length) < 0) {
 393                         BT_ERR("%s corrupted ACL packet", hdev->name);
 394                         hdev->stat.err_rx++;
 395                 }
 396         }
 397
 398         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 399                 return;
 400
 401         usb_anchor_urb(urb, &data->bulk_anchor);
 402         usb_mark_last_busy(data->udev);
 403
 404         err = usb_submit_urb(urb, GFP_ATOMIC);
 405         if (err < 0) {
 406                 /* -EPERM: urb is being killed;
 407                  * -ENODEV: device got disconnected */
 408                 if (err != -EPERM && err != -ENODEV)
 409                         BT_ERR("%s urb %p failed to resubmit (%d)",
 410                                                 hdev->name, urb, -err);
 411                 usb_unanchor_urb(urb);
 412         }
 413 }
 414
 415 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 416 {
 417         struct btusb_data *data = hci_get_drvdata(hdev);
 418         struct urb *urb;
 419         unsigned char *buf;
 420         unsigned int pipe;
 421         int err, size = HCI_MAX_FRAME_SIZE;
 422
 423         BT_DBG("%s", hdev->name);
 424
 425         if (!data->bulk_rx_ep)
 426                 return -ENODEV;
 427
 428         urb = usb_alloc_urb(0, mem_flags);
 429         if (!urb)
 430                 return -ENOMEM;
 431
 432         buf = kmalloc(size, mem_flags);
 433         if (!buf) {
 434                 usb_free_urb(urb);
 435                 return -ENOMEM;
 436         }
 437
 438         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 439
 440         usb_fill_bulk_urb(urb, data->udev, pipe,
 441                                         buf, size, btusb_bulk_complete, hdev);
 442
 443         urb->transfer_flags |= URB_FREE_BUFFER;
 444
 445         usb_mark_last_busy(data->udev);
 446         usb_anchor_urb(urb, &data->bulk_anchor);
 447
 448         err = usb_submit_urb(urb, mem_flags);
 449         if (err < 0) {
 450                 if (err != -EPERM && err != -ENODEV)
 451                         BT_ERR("%s urb %p submission failed (%d)",
 452                                                 hdev->name, urb, -err);
 453                 usb_unanchor_urb(urb);
 454         }
 455
 456         usb_free_urb(urb);
 457
 458         return err;
 459 }
 460
 461 static void btusb_isoc_complete(struct urb *urb)
 462 {
 463         struct hci_dev *hdev = urb->context;
 464         struct btusb_data *data = hci_get_drvdata(hdev);
 465         int i, err;
 466
 467         BT_DBG("%s urb %p status %d count %d", hdev->name,
 468                                         urb, urb->status, urb->actual_length);
 469
 470         if (!test_bit(HCI_RUNNING, &hdev->flags))
 471                 return;
 472
 473         if (urb->status == 0) {
 474                 for (i = 0; i < urb->number_of_packets; i++) {
 475                         unsigned int offset = urb->iso_frame_desc[i].offset;
 476                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 477
 478                         if (urb->iso_frame_desc[i].status)
 479                                 continue;
 480
 481                         hdev->stat.byte_rx += length;
 482
 483                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 484                                                 urb->transfer_buffer + offset,
 485                                                                 length) < 0) {
 486                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 487                                 hdev->stat.err_rx++;
 488                         }
 489                 }
 490         }
 491
 492         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 493                 return;
 494
 495         usb_anchor_urb(urb, &data->isoc_anchor);
 496
 497         err = usb_submit_urb(urb, GFP_ATOMIC);
 498         if (err < 0) {
 499                 /* -EPERM: urb is being killed;
 500                  * -ENODEV: device got disconnected */
 501                 if (err != -EPERM && err != -ENODEV)
 502                         BT_ERR("%s urb %p failed to resubmit (%d)",
 503                                                 hdev->name, urb, -err);
 504                 usb_unanchor_urb(urb);
 505         }
 506 }
 507
 508 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 509 {
 510         int i, offset = 0;
 511
 512         BT_DBG("len %d mtu %d", len, mtu);
 513
 514         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 515                                         i++, offset += mtu, len -= mtu) {
 516                 urb->iso_frame_desc[i].offset = offset;
 517                 urb->iso_frame_desc[i].length = mtu;
 518         }
 519
 520         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 521                 urb->iso_frame_desc[i].offset = offset;
 522                 urb->iso_frame_desc[i].length = len;
 523                 i++;
 524         }
 525
 526         urb->number_of_packets = i;
 527 }
 528
 529 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 530 {
 531         struct btusb_data *data = hci_get_drvdata(hdev);
 532         struct urb *urb;
 533         unsigned char *buf;
 534         unsigned int pipe;
 535         int err, size;
 536
 537         BT_DBG("%s", hdev->name);
 538
 539         if (!data->isoc_rx_ep)
 540                 return -ENODEV;
 541
 542         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 543         if (!urb)
 544                 return -ENOMEM;
 545
 546         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 547                                                 BTUSB_MAX_ISOC_FRAMES;
 548
 549         buf = kmalloc(size, mem_flags);
 550         if (!buf) {
 551                 usb_free_urb(urb);
 552                 return -ENOMEM;
 553         }
 554
 555         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 556
 557         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 558                                 hdev, data->isoc_rx_ep->bInterval);
 559
 560         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 561
 562         __fill_isoc_descriptor(urb, size,
 563                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 564
 565         usb_anchor_urb(urb, &data->isoc_anchor);
 566
 567         err = usb_submit_urb(urb, mem_flags);
 568         if (err < 0) {
 569                 if (err != -EPERM && err != -ENODEV)
 570                         BT_ERR("%s urb %p submission failed (%d)",
 571                                                 hdev->name, urb, -err);
 572                 usb_unanchor_urb(urb);
 573         }
 574
 575         usb_free_urb(urb);
 576
 577         return err;
 578 }
 579
 580 static void btusb_tx_complete(struct urb *urb)
 581 {
 582         struct sk_buff *skb = urb->context;
 583         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 584         struct btusb_data *data = hci_get_drvdata(hdev);
 585
 586         BT_DBG("%s urb %p status %d count %d", hdev->name,
 587                                         urb, urb->status, urb->actual_length);
 588
 589         if (!test_bit(HCI_RUNNING, &hdev->flags))
 590                 goto done;
 591
 592         if (!urb->status)
 593                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 594         else
 595                 hdev->stat.err_tx++;
 596
 597 done:
 598         spin_lock(&data->txlock);
 599         data->tx_in_flight--;
 600         spin_unlock(&data->txlock);
 601
 602         kfree(urb->setup_packet);
 603
 604         kfree_skb(skb);
 605 }
 606
 607 static void btusb_isoc_tx_complete(struct urb *urb)
 608 {
 609         struct sk_buff *skb = urb->context;
 610         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 611
 612         BT_DBG("%s urb %p status %d count %d", hdev->name,
 613                                         urb, urb->status, urb->actual_length);
 614
 615         if (!test_bit(HCI_RUNNING, &hdev->flags))
 616                 goto done;
 617
 618         if (!urb->status)
 619                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 620         else
 621                 hdev->stat.err_tx++;
 622
 623 done:
 624         kfree(urb->setup_packet);
 625
 626         kfree_skb(skb);
 627 }
 628
 629 static int btusb_open(struct hci_dev *hdev)
 630 {
 631         struct btusb_data *data = hci_get_drvdata(hdev);
 632         int err;
 633
 634         BT_DBG("%s", hdev->name);
 635
 636         err = usb_autopm_get_interface(data->intf);
 637         if (err < 0)
 638                 return err;
 639
 640         data->intf->needs_remote_wakeup = 1;
 641
 642         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 643                 goto done;
 644
 645         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 646                 goto done;
 647
 648         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 649         if (err < 0)
 650                 goto failed;
 651
 652         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 653         if (err < 0) {
 654                 usb_kill_anchored_urbs(&data->intr_anchor);
 655                 goto failed;
 656         }
 657
 658         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 659         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 660
 661 done:
 662         usb_autopm_put_interface(data->intf);
 663         return 0;
 664
 665 failed:
 666         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 667         clear_bit(HCI_RUNNING, &hdev->flags);
 668         usb_autopm_put_interface(data->intf);
 669         return err;
 670 }
 671
 672 static void btusb_stop_traffic(struct btusb_data *data)
 673 {
 674         usb_kill_anchored_urbs(&data->intr_anchor);
 675         usb_kill_anchored_urbs(&data->bulk_anchor);
 676         usb_kill_anchored_urbs(&data->isoc_anchor);
 677 }
 678
 679 static int btusb_close(struct hci_dev *hdev)
 680 {
 681         struct btusb_data *data = hci_get_drvdata(hdev);
 682         int err;
 683
 684         BT_DBG("%s", hdev->name);
 685
 686         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 687                 return 0;
 688
 689         cancel_work_sync(&data->work);
 690         cancel_work_sync(&data->waker);
 691
 692         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 693         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 694         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 695
 696         btusb_stop_traffic(data);
 697         err = usb_autopm_get_interface(data->intf);
 698         if (err < 0)
 699                 goto failed;
 700
 701         data->intf->needs_remote_wakeup = 0;
 702         usb_autopm_put_interface(data->intf);
 703
 704 failed:
 705         usb_scuttle_anchored_urbs(&data->deferred);
 706         return 0;
 707 }
 708
 709 static int btusb_flush(struct hci_dev *hdev)
 710 {
 711         struct btusb_data *data = hci_get_drvdata(hdev);
 712
 713         BT_DBG("%s", hdev->name);
 714
 715         usb_kill_anchored_urbs(&data->tx_anchor);
 716
 717         return 0;
 718 }
 719
 720 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 721 {
 722         struct btusb_data *data = hci_get_drvdata(hdev);
 723         struct usb_ctrlrequest *dr;
 724         struct urb *urb;
 725         unsigned int pipe;
 726         int err;
 727
 728         BT_DBG("%s", hdev->name);
 729
 730         if (!test_bit(HCI_RUNNING, &hdev->flags))
 731                 return -EBUSY;
 732
 733         skb->dev = (void *) hdev;
 734
 735         switch (bt_cb(skb)->pkt_type) {
 736         case HCI_COMMAND_PKT:
 737                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 738                 if (!urb)
 739                         return -ENOMEM;
 740
 741                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 742                 if (!dr) {
 743                         usb_free_urb(urb);
 744                         return -ENOMEM;
 745                 }
 746
 747                 dr->bRequestType = data->cmdreq_type;
 748                 dr->bRequest     = 0;
 749                 dr->wIndex       = 0;
 750                 dr->wValue       = 0;
 751                 dr->wLength      = __cpu_to_le16(skb->len);
 752
 753                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 754
 755                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 756                                 skb->data, skb->len, btusb_tx_complete, skb);
 757
 758                 hdev->stat.cmd_tx++;
 759                 break;
 760
 761         case HCI_ACLDATA_PKT:
 762                 if (!data->bulk_tx_ep)
 763                         return -ENODEV;
 764
 765                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 766                 if (!urb)
 767                         return -ENOMEM;
 768
 769                 pipe = usb_sndbulkpipe(data->udev,
 770                                         data->bulk_tx_ep->bEndpointAddress);
 771
 772                 usb_fill_bulk_urb(urb, data->udev, pipe,
 773                                 skb->data, skb->len, btusb_tx_complete, skb);
 774
 775                 hdev->stat.acl_tx++;
 776                 break;
 777
 778         case HCI_SCODATA_PKT:
 779                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 780                         return -ENODEV;
 781
 782                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 783                 if (!urb)
 784                         return -ENOMEM;
 785
 786                 pipe = usb_sndisocpipe(data->udev,
 787                                         data->isoc_tx_ep->bEndpointAddress);
 788
 789                 usb_fill_int_urb(urb, data->udev, pipe,
 790                                 skb->data, skb->len, btusb_isoc_tx_complete,
 791                                 skb, data->isoc_tx_ep->bInterval);
 792
 793                 urb->transfer_flags  = URB_ISO_ASAP;
 794
 795                 __fill_isoc_descriptor(urb, skb->len,
 796                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 797
 798                 hdev->stat.sco_tx++;
 799                 goto skip_waking;
 800
 801         default:
 802                 return -EILSEQ;
 803         }
 804
 805         err = inc_tx(data);
 806         if (err) {
 807                 usb_anchor_urb(urb, &data->deferred);
 808                 schedule_work(&data->waker);
 809                 err = 0;
 810                 goto done;
 811         }
 812
 813 skip_waking:
 814         usb_anchor_urb(urb, &data->tx_anchor);
 815
 816         err = usb_submit_urb(urb, GFP_ATOMIC);
 817         if (err < 0) {
 818                 if (err != -EPERM && err != -ENODEV)
 819                         BT_ERR("%s urb %p submission failed (%d)",
 820                                                 hdev->name, urb, -err);
 821                 kfree(urb->setup_packet);
 822                 usb_unanchor_urb(urb);
 823         } else {
 824                 usb_mark_last_busy(data->udev);
 825         }
 826
 827 done:
 828         usb_free_urb(urb);
 829         return err;
 830 }
 831
 832 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 833 {
 834         struct btusb_data *data = hci_get_drvdata(hdev);
 835
 836         BT_DBG("%s evt %d", hdev->name, evt);
 837
 838         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 839                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 840                 schedule_work(&data->work);
 841         }
 842 }
 843
 844 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 845 {
 846         struct btusb_data *data = hci_get_drvdata(hdev);
 847         struct usb_interface *intf = data->isoc;
 848         struct usb_endpoint_descriptor *ep_desc;
 849         int i, err;
 850
 851         if (!data->isoc)
 852                 return -ENODEV;
 853
 854         err = usb_set_interface(data->udev, 1, altsetting);
 855         if (err < 0) {
 856                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 857                 return err;
 858         }
 859
 860         data->isoc_altsetting = altsetting;
 861
 862         data->isoc_tx_ep = NULL;
 863         data->isoc_rx_ep = NULL;
 864
 865         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 866                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 867
 868                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 869                         data->isoc_tx_ep = ep_desc;
 870                         continue;
 871                 }
 872
 873                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 874                         data->isoc_rx_ep = ep_desc;
 875                         continue;
 876                 }
 877         }
 878
 879         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 880                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 881                 return -ENODEV;
 882         }
 883
 884         return 0;
 885 }
 886
 887 static void btusb_work(struct work_struct *work)
 888 {
 889         struct btusb_data *data = container_of(work, struct btusb_data, work);
 890         struct hci_dev *hdev = data->hdev;
 891         int new_alts;
 892         int err;
 893
 894         if (data->sco_num > 0) {
 895                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 896                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 897                         if (err < 0) {
 898                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 899                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 900                                 return;
 901                         }
 902
 903                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 904                 }
 905
 906                 if (hdev->voice_setting & 0x0020) {
 907                         static const int alts[3] = { 2, 4, 5 };
 908                         new_alts = alts[data->sco_num - 1];
 909                 } else {
 910                         new_alts = data->sco_num;
 911                 }
 912
 913                 if (data->isoc_altsetting != new_alts) {
 914                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 915                         usb_kill_anchored_urbs(&data->isoc_anchor);
 916
 917                         if (__set_isoc_interface(hdev, new_alts) < 0)
 918                                 return;
 919                 }
 920
 921                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 922                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 923                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 924                         else
 925                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 926                 }
 927         } else {
 928                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 929                 usb_kill_anchored_urbs(&data->isoc_anchor);
 930
 931                 __set_isoc_interface(hdev, 0);
 932                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 933                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 934         }
 935 }
 936
 937 static void btusb_waker(struct work_struct *work)
 938 {
 939         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 940         int err;
 941
 942         err = usb_autopm_get_interface(data->intf);
 943         if (err < 0)
 944                 return;
 945
 946         usb_autopm_put_interface(data->intf);
 947 }
 948
 949 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 950 {
 951         struct sk_buff *skb;
 952         u8 val = 0x00;
 953
 954         BT_DBG("%s", hdev->name);
 955
 956         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 957         if (IS_ERR(skb))
 958                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 959         else
 960                 kfree_skb(skb);
 961
 962         return 0;
 963 }
 964
 965 struct intel_version {
 966         u8 status;
 967         u8 hw_platform;
 968         u8 hw_variant;
 969         u8 hw_revision;
 970         u8 fw_variant;
 971         u8 fw_revision;
 972         u8 fw_build_num;
 973         u8 fw_build_ww;
 974         u8 fw_build_yy;
 975         u8 fw_patch_num;
 976 } __packed;
 977
 978 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 979                                                 struct intel_version *ver)
 980 {
 981         const struct firmware *fw;
 982         char fwname[64];
 983         int ret;
 984
 985         snprintf(fwname, sizeof(fwname),
 986                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 987                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 988                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 989                  ver->fw_build_ww, ver->fw_build_yy);
 990
 991         ret = request_firmware(&fw, fwname, &hdev->dev);
 992         if (ret < 0) {
 993                 if (ret == -EINVAL) {
 994                         BT_ERR("%s Intel firmware file request failed (%d)",
 995                                hdev->name, ret);
 996                         return NULL;
 997                 }
 998
 999                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1000                        hdev->name, fwname, ret);
1001
1002                 /* If the correct firmware patch file is not found, use the
1003                  * default firmware patch file instead
1004                  */
1005                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1006                          ver->hw_platform, ver->hw_variant);
1007                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1008                         BT_ERR("%s failed to open default Intel fw file: %s",
1009                                hdev->name, fwname);
1010                         return NULL;
1011                 }
1012         }
1013
1014         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1015
1016         return fw;
1017 }
1018
1019 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1020                                       const struct firmware *fw,
1021                                       const u8 **fw_ptr, int *disable_patch)
1022 {
1023         struct sk_buff *skb;
1024         struct hci_command_hdr *cmd;
1025         const u8 *cmd_param;
1026         struct hci_event_hdr *evt = NULL;
1027         const u8 *evt_param = NULL;
1028         int remain = fw->size - (*fw_ptr - fw->data);
1029
1030         /* The first byte indicates the types of the patch command or event.
1031          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1032          * in the current firmware buffer doesn't start with 0x01 or
1033          * the size of remain buffer is smaller than HCI command header,
1034          * the firmware file is corrupted and it should stop the patching
1035          * process.
1036          */
1037         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1038                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1039                 return -EINVAL;
1040         }
1041         (*fw_ptr)++;
1042         remain--;
1043
1044         cmd = (struct hci_command_hdr *)(*fw_ptr);
1045         *fw_ptr += sizeof(*cmd);
1046         remain -= sizeof(*cmd);
1047
1048         /* Ensure that the remain firmware data is long enough than the length
1049          * of command parameter. If not, the firmware file is corrupted.
1050          */
1051         if (remain < cmd->plen) {
1052                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1053                 return -EFAULT;
1054         }
1055
1056         /* If there is a command that loads a patch in the firmware
1057          * file, then enable the patch upon success, otherwise just
1058          * disable the manufacturer mode, for example patch activation
1059          * is not required when the default firmware patch file is used
1060          * because there are no patch data to load.
1061          */
1062         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1063                 *disable_patch = 0;
1064
1065         cmd_param = *fw_ptr;
1066         *fw_ptr += cmd->plen;
1067         remain -= cmd->plen;
1068
1069         /* This reads the expected events when the above command is sent to the
1070          * device. Some vendor commands expects more than one events, for
1071          * example command status event followed by vendor specific event.
1072          * For this case, it only keeps the last expected event. so the command
1073          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1074          * last expected event.
1075          */
1076         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1077                 (*fw_ptr)++;
1078                 remain--;
1079
1080                 evt = (struct hci_event_hdr *)(*fw_ptr);
1081                 *fw_ptr += sizeof(*evt);
1082                 remain -= sizeof(*evt);
1083
1084                 if (remain < evt->plen) {
1085                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1086                                hdev->name);
1087                         return -EFAULT;
1088                 }
1089
1090                 evt_param = *fw_ptr;
1091                 *fw_ptr += evt->plen;
1092                 remain -= evt->plen;
1093         }
1094
1095         /* Every HCI commands in the firmware file has its correspond event.
1096          * If event is not found or remain is smaller than zero, the firmware
1097          * file is corrupted.
1098          */
1099         if (!evt || !evt_param || remain < 0) {
1100                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1101                 return -EFAULT;
1102         }
1103
1104         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1105                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1106         if (IS_ERR(skb)) {
1107                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1108                        hdev->name, cmd->opcode, PTR_ERR(skb));
1109                 return PTR_ERR(skb);
1110         }
1111
1112         /* It ensures that the returned event matches the event data read from
1113          * the firmware file. At fist, it checks the length and then
1114          * the contents of the event.
1115          */
1116         if (skb->len != evt->plen) {
1117                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1118                        le16_to_cpu(cmd->opcode));
1119                 kfree_skb(skb);
1120                 return -EFAULT;
1121         }
1122
1123         if (memcmp(skb->data, evt_param, evt->plen)) {
1124                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1125                        hdev->name, le16_to_cpu(cmd->opcode));
1126                 kfree_skb(skb);
1127                 return -EFAULT;
1128         }
1129         kfree_skb(skb);
1130
1131         return 0;
1132 }
1133
1134 static int btusb_setup_intel(struct hci_dev *hdev)
1135 {
1136         struct sk_buff *skb;
1137         const struct firmware *fw;
1138         const u8 *fw_ptr;
1139         int disable_patch;
1140         struct intel_version *ver;
1141
1142         const u8 mfg_enable[] = { 0x01, 0x00 };
1143         const u8 mfg_disable[] = { 0x00, 0x00 };
1144         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1145         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1146
1147         BT_DBG("%s", hdev->name);
1148
1149         /* The controller has a bug with the first HCI command sent to it
1150          * returning number of completed commands as zero. This would stall the
1151          * command processing in the Bluetooth core.
1152          *
1153          * As a workaround, send HCI Reset command first which will reset the
1154          * number of completed commands and allow normal command processing
1155          * from now on.
1156          */
1157         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1158         if (IS_ERR(skb)) {
1159                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1160                        hdev->name, PTR_ERR(skb));
1161                 return PTR_ERR(skb);
1162         }
1163         kfree_skb(skb);
1164
1165         /* Read Intel specific controller version first to allow selection of
1166          * which firmware file to load.
1167          *
1168          * The returned information are hardware variant and revision plus
1169          * firmware variant, revision and build number.
1170          */
1171         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1172         if (IS_ERR(skb)) {
1173                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1174                        hdev->name, PTR_ERR(skb));
1175                 return PTR_ERR(skb);
1176         }
1177
1178         if (skb->len != sizeof(*ver)) {
1179                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1180                 kfree_skb(skb);
1181                 return -EIO;
1182         }
1183
1184         ver = (struct intel_version *)skb->data;
1185         if (ver->status) {
1186                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1187                        ver->status);
1188                 kfree_skb(skb);
1189                 return -bt_to_errno(ver->status);
1190         }
1191
1192         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1193                 hdev->name, ver->hw_platform, ver->hw_variant,
1194                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1195                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1196                 ver->fw_patch_num);
1197
1198         /* fw_patch_num indicates the version of patch the device currently
1199          * have. If there is no patch data in the device, it is always 0x00.
1200          * So, if it is other than 0x00, no need to patch the deivce again.
1201          */
1202         if (ver->fw_patch_num) {
1203                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1204                         hdev->name, ver->fw_patch_num);
1205                 kfree_skb(skb);
1206                 return 0;
1207         }
1208
1209         /* Opens the firmware patch file based on the firmware version read
1210          * from the controller. If it fails to open the matching firmware
1211          * patch file, it tries to open the default firmware patch file.
1212          * If no patch file is found, allow the device to operate without
1213          * a patch.
1214          */
1215         fw = btusb_setup_intel_get_fw(hdev, ver);
1216         if (!fw) {
1217                 kfree_skb(skb);
1218                 return 0;
1219         }
1220         fw_ptr = fw->data;
1221
1222         /* This Intel specific command enables the manufacturer mode of the
1223          * controller.
1224          *
1225          * Only while this mode is enabled, the driver can download the
1226          * firmware patch data and configuration parameters.
1227          */
1228         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1229         if (IS_ERR(skb)) {
1230                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1231                        hdev->name, PTR_ERR(skb));
1232                 release_firmware(fw);
1233                 return PTR_ERR(skb);
1234         }
1235
1236         if (skb->data[0]) {
1237                 u8 evt_status = skb->data[0];
1238                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1239                        hdev->name, evt_status);
1240                 kfree_skb(skb);
1241                 release_firmware(fw);
1242                 return -bt_to_errno(evt_status);
1243         }
1244         kfree_skb(skb);
1245
1246         disable_patch = 1;
1247
1248         /* The firmware data file consists of list of Intel specific HCI
1249          * commands and its expected events. The first byte indicates the
1250          * type of the message, either HCI command or HCI event.
1251          *
1252          * It reads the command and its expected event from the firmware file,
1253          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1254          * the returned event is compared with the event read from the firmware
1255          * file and it will continue until all the messages are downloaded to
1256          * the controller.
1257          *
1258          * Once the firmware patching is completed successfully,
1259          * the manufacturer mode is disabled with reset and activating the
1260          * downloaded patch.
1261          *
1262          * If the firmware patching fails, the manufacturer mode is
1263          * disabled with reset and deactivating the patch.
1264          *
1265          * If the default patch file is used, no reset is done when disabling
1266          * the manufacturer.
1267          */
1268         while (fw->size > fw_ptr - fw->data) {
1269                 int ret;
1270
1271                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1272                                                  &disable_patch);
1273                 if (ret < 0)
1274                         goto exit_mfg_deactivate;
1275         }
1276
1277         release_firmware(fw);
1278
1279         if (disable_patch)
1280                 goto exit_mfg_disable;
1281
1282         /* Patching completed successfully and disable the manufacturer mode
1283          * with reset and activate the downloaded firmware patches.
1284          */
1285         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1286                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1287         if (IS_ERR(skb)) {
1288                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1289                        hdev->name, PTR_ERR(skb));
1290                 return PTR_ERR(skb);
1291         }
1292         kfree_skb(skb);
1293
1294         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1295                 hdev->name);
1296
1297         return 0;
1298
1299 exit_mfg_disable:
1300         /* Disable the manufacturer mode without reset */
1301         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1302                              HCI_INIT_TIMEOUT);
1303         if (IS_ERR(skb)) {
1304                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1305                        hdev->name, PTR_ERR(skb));
1306                 return PTR_ERR(skb);
1307         }
1308         kfree_skb(skb);
1309
1310         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1311         return 0;
1312
1313 exit_mfg_deactivate:
1314         release_firmware(fw);
1315
1316         /* Patching failed. Disable the manufacturer mode with reset and
1317          * deactivate the downloaded firmware patches.
1318          */
1319         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1320                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1321         if (IS_ERR(skb)) {
1322                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1323                        hdev->name, PTR_ERR(skb));
1324                 return PTR_ERR(skb);
1325         }
1326         kfree_skb(skb);
1327
1328         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1329                 hdev->name);
1330
1331         return 0;
1332 }
1333
1334 static int btusb_probe(struct usb_interface *intf,
1335                                 const struct usb_device_id *id)
1336 {
1337         struct usb_endpoint_descriptor *ep_desc;
1338         struct btusb_data *data;
1339         struct hci_dev *hdev;
1340         int i, err;
1341
1342         BT_DBG("intf %p id %p", intf, id);
1343
1344         /* interface numbers are hardcoded in the spec */
1345         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1346                 return -ENODEV;
1347
1348         if (!id->driver_info) {
1349                 const struct usb_device_id *match;
1350                 match = usb_match_id(intf, blacklist_table);
1351                 if (match)
1352                         id = match;
1353         }
1354
1355         if (id->driver_info == BTUSB_IGNORE)
1356                 return -ENODEV;
1357
1358         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1359                 return -ENODEV;
1360
1361         if (ignore_csr && id->driver_info & BTUSB_CSR)
1362                 return -ENODEV;
1363
1364         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1365                 return -ENODEV;
1366
1367         if (id->driver_info & BTUSB_ATH3012) {
1368                 struct usb_device *udev = interface_to_usbdev(intf);
1369
1370                 /* Old firmware would otherwise let ath3k driver load
1371                  * patch and sysconfig files */
1372                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1373                         return -ENODEV;
1374         }
1375
1376         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1377         if (!data)
1378                 return -ENOMEM;
1379
1380         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1381                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1382
1383                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1384                         data->intr_ep = ep_desc;
1385                         continue;
1386                 }
1387
1388                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1389                         data->bulk_tx_ep = ep_desc;
1390                         continue;
1391                 }
1392
1393                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1394                         data->bulk_rx_ep = ep_desc;
1395                         continue;
1396                 }
1397         }
1398
1399         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1400                 return -ENODEV;
1401
1402         data->cmdreq_type = USB_TYPE_CLASS;
1403
1404         data->udev = interface_to_usbdev(intf);
1405         data->intf = intf;
1406
1407         spin_lock_init(&data->lock);
1408
1409         INIT_WORK(&data->work, btusb_work);
1410         INIT_WORK(&data->waker, btusb_waker);
1411         spin_lock_init(&data->txlock);
1412
1413         init_usb_anchor(&data->tx_anchor);
1414         init_usb_anchor(&data->intr_anchor);
1415         init_usb_anchor(&data->bulk_anchor);
1416         init_usb_anchor(&data->isoc_anchor);
1417         init_usb_anchor(&data->deferred);
1418
1419         hdev = hci_alloc_dev();
1420         if (!hdev)
1421                 return -ENOMEM;
1422
1423         hdev->bus = HCI_USB;
1424         hci_set_drvdata(hdev, data);
1425
1426         data->hdev = hdev;
1427
1428         SET_HCIDEV_DEV(hdev, &intf->dev);
1429
1430         hdev->open   = btusb_open;
1431         hdev->close  = btusb_close;
1432         hdev->flush  = btusb_flush;
1433         hdev->send   = btusb_send_frame;
1434         hdev->notify = btusb_notify;
1435
1436         if (id->driver_info & BTUSB_BCM92035)
1437                 hdev->setup = btusb_setup_bcm92035;
1438
1439         if (id->driver_info & BTUSB_INTEL)
1440                 hdev->setup = btusb_setup_intel;
1441
1442         /* Interface numbers are hardcoded in the specification */
1443         data->isoc = usb_ifnum_to_if(data->udev, 1);
1444
1445         if (!reset)
1446                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1447
1448         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1449                 if (!disable_scofix)
1450                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1451         }
1452
1453         if (id->driver_info & BTUSB_BROKEN_ISOC)
1454                 data->isoc = NULL;
1455
1456         if (id->driver_info & BTUSB_DIGIANSWER) {
1457                 data->cmdreq_type = USB_TYPE_VENDOR;
1458                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1459         }
1460
1461         if (id->driver_info & BTUSB_CSR) {
1462                 struct usb_device *udev = data->udev;
1463
1464                 /* Old firmware would otherwise execute USB reset */
1465                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1466                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1467         }
1468
1469         if (id->driver_info & BTUSB_SNIFFER) {
1470                 struct usb_device *udev = data->udev;
1471
1472                 /* New sniffer firmware has crippled HCI interface */
1473                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1474                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1475
1476                 data->isoc = NULL;
1477         }
1478
1479         if (data->isoc) {
1480                 err = usb_driver_claim_interface(&btusb_driver,
1481                                                         data->isoc, data);
1482                 if (err < 0) {
1483                         hci_free_dev(hdev);
1484                         return err;
1485                 }
1486         }
1487
1488         err = hci_register_dev(hdev);
1489         if (err < 0) {
1490                 hci_free_dev(hdev);
1491                 return err;
1492         }
1493
1494         usb_set_intfdata(intf, data);
1495
1496         return 0;
1497 }
1498
1499 static void btusb_disconnect(struct usb_interface *intf)
1500 {
1501         struct btusb_data *data = usb_get_intfdata(intf);
1502         struct hci_dev *hdev;
1503
1504         BT_DBG("intf %p", intf);
1505
1506         if (!data)
1507                 return;
1508
1509         hdev = data->hdev;
1510         usb_set_intfdata(data->intf, NULL);
1511
1512         if (data->isoc)
1513                 usb_set_intfdata(data->isoc, NULL);
1514
1515         hci_unregister_dev(hdev);
1516
1517         if (intf == data->isoc)
1518                 usb_driver_release_interface(&btusb_driver, data->intf);
1519         else if (data->isoc)
1520                 usb_driver_release_interface(&btusb_driver, data->isoc);
1521
1522         hci_free_dev(hdev);
1523 }
1524
1525 #ifdef CONFIG_PM
1526 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1527 {
1528         struct btusb_data *data = usb_get_intfdata(intf);
1529
1530         BT_DBG("intf %p", intf);
1531
1532         if (data->suspend_count++)
1533                 return 0;
1534
1535         spin_lock_irq(&data->txlock);
1536         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1537                 set_bit(BTUSB_SUSPENDING, &data->flags);
1538                 spin_unlock_irq(&data->txlock);
1539         } else {
1540                 spin_unlock_irq(&data->txlock);
1541                 data->suspend_count--;
1542                 return -EBUSY;
1543         }
1544
1545         cancel_work_sync(&data->work);
1546
1547         btusb_stop_traffic(data);
1548         usb_kill_anchored_urbs(&data->tx_anchor);
1549
1550         return 0;
1551 }
1552
1553 static void play_deferred(struct btusb_data *data)
1554 {
1555         struct urb *urb;
1556         int err;
1557
1558         while ((urb = usb_get_from_anchor(&data->deferred))) {
1559                 err = usb_submit_urb(urb, GFP_ATOMIC);
1560                 if (err < 0)
1561                         break;
1562
1563                 data->tx_in_flight++;
1564         }
1565         usb_scuttle_anchored_urbs(&data->deferred);
1566 }
1567
1568 static int btusb_resume(struct usb_interface *intf)
1569 {
1570         struct btusb_data *data = usb_get_intfdata(intf);
1571         struct hci_dev *hdev = data->hdev;
1572         int err = 0;
1573
1574         BT_DBG("intf %p", intf);
1575
1576         if (--data->suspend_count)
1577                 return 0;
1578
1579         if (!test_bit(HCI_RUNNING, &hdev->flags))
1580                 goto done;
1581
1582         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1583                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1584                 if (err < 0) {
1585                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1586                         goto failed;
1587                 }
1588         }
1589
1590         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1591                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1592                 if (err < 0) {
1593                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1594                         goto failed;
1595                 }
1596
1597                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1598         }
1599
1600         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1601                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1602                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1603                 else
1604                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1605         }
1606
1607         spin_lock_irq(&data->txlock);
1608         play_deferred(data);
1609         clear_bit(BTUSB_SUSPENDING, &data->flags);
1610         spin_unlock_irq(&data->txlock);
1611         schedule_work(&data->work);
1612
1613         return 0;
1614
1615 failed:
1616         usb_scuttle_anchored_urbs(&data->deferred);
1617 done:
1618         spin_lock_irq(&data->txlock);
1619         clear_bit(BTUSB_SUSPENDING, &data->flags);
1620         spin_unlock_irq(&data->txlock);
1621
1622         return err;
1623 }
1624 #endif
1625
1626 static struct usb_driver btusb_driver = {
1627         .name           = "btusb",
1628         .probe          = btusb_probe,
1629         .disconnect     = btusb_disconnect,
1630 #ifdef CONFIG_PM
1631         .suspend        = btusb_suspend,
1632         .resume         = btusb_resume,
1633 #endif
1634         .id_table       = btusb_table,
1635         .supports_autosuspend = 1,
1636         .disable_hub_initiated_lpm = 1,
1637 };
1638
1639 module_usb_driver(btusb_driver);
1640
1641 module_param(ignore_dga, bool, 0644);
1642 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1643
1644 module_param(ignore_csr, bool, 0644);
1645 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1646
1647 module_param(ignore_sniffer, bool, 0644);
1648 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1649
1650 module_param(disable_scofix, bool, 0644);
1651 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1652
1653 module_param(force_scofix, bool, 0644);
1654 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1655
1656 module_param(reset, bool, 0644);
1657 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1658
1659 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1660 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1661 MODULE_VERSION(VERSION);
1662 MODULE_LICENSE("GPL");